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Discussion on thread cutting method of cnc lathe

The method of thread cutting on CNC lathe is called single point thread machining with indexable thread inserts. As thread processing is both cutting and shaping, the shape and size of the thread insert must be consistent with the shape and size of the finished thread The dimensions correspond. According to the definition, single point thread machining is the process of cutting spiral grooves of a specific shape. Every time the spindle rotates for a circle, the forward speed is uniform. The thread uniformity is controlled by the programmed feed rate in the feed rate per revolution.   Threading The feed rate of is always the lead of the thread, not the pitch. For single head threads, the lead and pitch are the same. Since single point thread machining is a multi process, the CNC system provides spindle synchronization for each thread machining. CNC lathe Thread depth calculation No matter what thread processing method is used, thread depth is required for various calculations. It can be calculated from these common formulas (TPI is the number of threads per inch): External V-thread (metric or American customary unit is 60 degrees): Internal V-thread (metric or American customary unit is 60 degrees) Thread pitch=distance between two corresponding points of adjacent threads. In metric drawings, the pitch is specified as part of the thread designation. Thread lead=the distance that the thread tool advances along the axis when the spindle rotates for one revolution The spindle speed is always programmed in direct r/min mode (G97), not in constant surface speed mode G96. Feeding mode The way the thread cutter enters the material can be programmed in a variety of ways, using two available feed methods. Feed is a type of motion transferred from one time to the next. Three basic thread feeding methods are shown in Figure 29: 1) Cut in method - also known as radial feed 2) Angular method - also known as compound or side feed 3) Modified angle method - also known as modified compound (side) feed Usually, the specified feed rate is selected to achieve the best cutting conditions of the blade edge in a given material. With the exception of some very fine leads and soft materials, most thread cutting will benefit from a compound feed or an improved compound feed (angle method), provided that the thread geometry allows this method. For example, square threads will require radial feed, while Acme threads will benefit from compound feed. Four methods can be used for compound feed thread: 1) Constant cutting amount 2) Constant cutting depth 3) Single edge cutting 4) Double-sided cutting CNC lathe processing parts Radial feed If the conditions are suitable, radial feed is one of the more common thread processing methods. It applies to the cutting motion perpendicular to the diameter being cut. The diameter of each threaded hole is specified as the X axis, while the starting point of the Z axis remains unchanged. This feed method is applicable to Soft materials, such as brass, some aluminum grades, etc. In harder materials, it may damage thread integrity and is not recommended. The inevitable result of the radial feed motion is that two blade edges work at the same time. Since the blade edges are opposite to each other, chips are formed at both edges at the same time, which leads to problems that can be traced back to high temperature, lack of coolant path and tool wear. If the radial feed causes poor thread quality, the compound feed method can usually solve the problem. Compound feed The compound feed method - also known as the flank feed method - works differently. Instead of feeding the thread tool perpendicular to the part diameter, the position passed each time is moved to the new Z position by triangulation. This method results in thread machining, where most of the cutting occurs at one edge. Since only one blade edge completes most of the work, the heat generated can be dissipated from the tool edge, and the cutting chips curl, thus extending the tool life. Using the compound thread processing method, you can use a deeper thread depth and fewer threads for most threads. The compound feed can be modified by providing a gap of 1 to 2 degrees on one edge to prevent friction. The angle of the thread will be maintained by the angle of the thread insert. Thread operation Many thread processing operations can be programmed for typical NC lathe machining. Some operations require special types of thread inserts and some operations can only be programmed if the control system is equipped with special (optional) functions: Constant lead single head thread (usually G32 or G76) Variable lead threads - increase or decrease (special option) (G34 and G35) The G32 command is sometimes referred to as "long hand threading" because each tool movement is programmed as a block. Programs using G32 can be long and almost impossible to edit without major reprogramming. On the other hand, the G32 method provides great flexibility and is usually the only method available, especially for special threads. The programming format of G32 requires at least four input program segments to start a single thread machining from the starting position: Threading cycle (G76) G76 is a repeated cycle of thread processing, and is the most commonly used method to generate most thread shapes. Similar to the roughing cycle, there are two versions of G76 depending on the control system used. For older controls, use the single block format, and for newer controls, use the two block format. The two block format provides additional settings that are not available in the one block method. Multithreading Multi head threads can be programmed using G32 or G76 thread machining instructions. The lead (and feed rate) of a multiple thread is always the number of starts multiplied by the pitch. For example, a three head thread with a pitch of 0.0625 (16 TPI) would be 0.1875 (F0.1875). In order to achieve the correct distribution of each starting point around the cylinder, each thread must start at an equal angle,

2022

12/07

Which CNC coolant should be selected for aluminum alloy cnc machining?

Which CNC coolant should be selected for aluminum alloy cnc machining? Cooling is essential in CNC machining. The coolant has many uses to ensure the efficient and accurate operation of the machine. Using the correct type of CNC coolant during milling, grinding, or turning can prevent overheating and extend tool life. Milling technology is one of the most commonly used NC processes in the industry. It is very suitable for producing custom designed parts on a range of materials. However, companies specializing in machining CNC aluminum alloy parts must use coolant to limit and control the overheating of milling cutters. Cnc machining of aluminum alloy What is the importance of CNC processing coolant and what should you choose? Let's discuss it. Effect of Coolant on Aluminum Alloy CNC Machining In the cutting process, high temperature is very harmful to the workpiece, chips and tools. Thermal energy may permanently damage the milling cutter or cause physical injury to technicians. This is why CNC coolant is indispensable during machining. ·Lubrication Coolants and lubricants can sometimes be used interchangeably. However, they are not the same. Coolant is used during milling to reduce friction between the tool and chip removal. Aluminum, as a material, can be very sticky and tends to the tool. The coolant makes things slippery and makes chips stick to them. ·For cooling The accumulation of heat is dangerous for both the tool and the machine operator. CNC machining coolant can be used to reduce the temperature of the workpiece and tool. The heavy cutting operation takes a long time and generates heat faster. ·Reduce corrosion CNC coolant is essential to protect tools and manufactured parts from corrosion. By providing the necessary lubrication, the machining process is seamless with minimal surface damage. Type of coolant used by Cnc when machining aluminum alloy The choice of CNC coolant is entirely based on the performance of the product and the materials used. Some types of coolants are better than others and have different uses. You should choose the coolant depending on whether you only need cooling, as a lubricant, chip removal, or all functions. There are different types of coolants, including liquids, gel and aerosols. Liquid coolants are the most common, including soluble oils, pure oils, synthetic and semi synthetic fluids. In the CNC aluminum project, you need a coolant with high oil content, such as pure oil. This is the best choice, because aluminum is often very sticky; Therefore, you need a lot of lubrication to prevent chips from moving away from the milling cutter. Straight oil has a base mineral oil or petroleum composition that functions in an undiluted form. Lubricants (such as vegetable oils, esters and fats) are essential in CNC milling. Aluminum alloy processing What to consider when using CNC coolant The concentration level needs to be carefully considered when using CNC coolant. Deficits or surpluses affect machines and increase manufacturing and maintenance costs. ·Low coolant concentration If the quantity is small, the manufacturer will incur costs due to overheating and friction. In addition, the milling cutter will reduce its life and cause corrosion of the workpiece and the machine. In addition, the tool may breed bacteria, thereby reducing its performance level. ·High coolant concentration On the other hand, if technicians use too much CNC coolant in the milling process, there will be a lot of concentrate waste. Excess will form residues on the machining tools, thus reducing the working life. In addition, such a large amount of coolant may contaminate the workpiece and tools. For operators, they may cause skin irritation due to chemicals. generalization CNC coolant is a necessity in aluminum processing. The proper selection of coolant and application method can ensure that the tools and aluminum customized parts are lubricated during the milling process and prevent overheating. During application, check the coolant concentration to prevent further damage to the machine.

2022

12/07

CNC machining of automatic equipment and robot parts

CNC processing automation equipment and robot parts We can provide fast CNC machining parts made of various wear-resistant materials, which are very suitable for automatic manufacturing systems and industrial robot applications. At Weimeite, we work with all industries on precision CNC machining parts. One of the fast developing industries with which we cooperate is the automation manufacturing industry. Automated manufacturing or automation uses the least manual assistance; For example, large production facilities with as many manufacturing roles as possible are automated. Cnc parts processing The use of automation was popularized by the automobile industry in the 1940s to help mass produce vehicles. Today, industrial robots are widely integrated into high-speed manufacturing systems and provide new efficiency standards. High speed requires the most strict accuracy level, which can be achieved by our most advanced 3, 4 and 5 axis CNC processing equipment. With the progress of computer ability and precision engineering, automation has become more and more sophisticated. Robots around the world are performing and checking extremely complex tasks. At least with the necessary manual intervention, cnc processing can operate around the clock, and employees can keep everything running. Through this continuous use, the reliability of the surrounding infrastructure is a top priority - this is where Vermeer can help. CNC processing of various materials We focus on precision CNC processing of various materials, including wear-resistant low-carbon steel and stainless steel - we also customize aluminum, titanium, brass, engineering plastics, etc. Wear resistant materials are particularly suitable for precision machined soleplates and long-life components. With more than 100 CNC machining centers, we regularly hold inventories of various materials, enabling us to start your project immediately. Robot parts processing Design and Manufacturing We can assist in the design and manufacture of baseplates, tools, jigs and other components to customize parts to your personalized requirements. High precision, attention to details and high-speed service when needed are guaranteed. We focus on machining with 5-axis CNC

2022

12/07

Cnc precision machining guide for semiconductor components

Cnc precision machining guide for semiconductor components CNC machining is one of the old technologies that have developed over time and effectively adapted to technological progress. This is why it is still widely used in various semiconductor industries, including cutting, forming, drilling, bending, etc., whether metal or plastic. The electronics industry is such an industry that requires CNC processing for PCB manufacturing. Semiconductor CNC processing has become more and more popular in the past few years. This is because CNC based manufacturing can meet all the requirements of PCB, even the most complex design, increased layers and multiple components installed. This special electronic part can make full use of CNC processing. This article also discusses the same problem. Semiconductor parts processing Advantages of semiconductor CNC machining Starting from the foundation, set the PCB manually, considering that its design, circuit, layer and involved components have their own risks. Secondly, the task may be repetitive in terms of manufacturing multiple chips with the same size, shape, thickness and other parameters. Time also needs to be considered here. Therefore, using CNC machining for PCB manufacturing is the most logical choice for PCB manufacturers. In addition, the evolution of CNC processing mode provides many advantages in manufacturing, and PCB manufacturers should make full use of this process. Semiconductor parts Here are some of the benefits CNC processing offers semiconductor companies. 1. As long as you store the CAD design files in the computer connected to the CNC machine tool, you can digitize the whole process without 2D drawing. 2. Test the machine calibration to match the PCB to reduce faults. 3. Advanced CNC machining is particularly useful when selecting chip materials according to the required temperature and chemical resistance and when achieving strict dimensional tolerances. 4. These machines are fully or partially automated and have multiple axes. This helps to have two or more processes on one machine at a time. 5. Machines with four or five axes can handle many complex geometric shapes. 6. In addition, CNC machines are modular and scalable today. This means that you can add one or two axes to the three-axis machine as needed. 7. Semiconductor CNC processing can reduce turnover time and waste, thus increasing costs. 8. CNC machine can handle a variety of semiconductor materials and their engineering combinations. 9. This makes complex designs and their prototypes easy. In the case of mass production in the future, the prototype PCB is a useful reference. 10. The special CNC process of semiconductor includes various types of grinding, milling, drilling, turning and manufacturing.

2022

12/07

Application of cmm in cnc machining workshop

Application of cmm in cnc machining workshop The characteristic of modern industry is the precision of manufacturing components. It has been evaluated as one tenth of a micron and continues to grow. In fact, the accuracy of machine tools declared by manufacturers has been improved so much that it is becoming more and more difficult to measure the actual deviation of manufactured parts. Therefore, new control methods and measuring equipment are constantly being developed and improved. One of the flexible, fast and accurate equipment units used to estimate part accuracy is CMM. Application of CMM CMM is the most advanced modern automatic and manual measurement means, and it has found many possible uses in the industry. Many different types of CMMs allow the tool to be used on large (gantry CMM) and minimal (cantilever CMM) machines. A variety of probe types (mechanical, optical, laser, or white light) ensure that you can even measure surfaces that the probe or any other object must not touch. The high level of CMM automation enables it to be used either manually by machinists or to reduce labor by automating it for repetitive operations involving mass production. How you use the CMM machine depends on what you want to achieve. Its flexibility and level of accuracy provide many opportunities for manufacturers. You can use CMM to redesign existing parts after machining or measuring them, or you can use them as part of an automated manufacturing chain. There are many options, some of which are listed in the following paragraphs. Things you must do before using CMM CMMs use the most sophisticated instruments for measurement. They can estimate faults in parts smaller than micrometers. However, in order for them to achieve the desired accuracy, the machinist must thoroughly prepare the equipment for measurement. The degree of preparation depends on the accuracy of the component being tested. If we talk about the parts with the highest accuracy (parts with tolerance of IT6 or less), you will have to prepare the CMM and the area you will measure. It must have a specific percentage of humidity and optimum temperature, and it must be very clean, because even tiny dust can affect the operation result under this precision. CMMs themselves are usually calibrated using extremely accurate metal balls. Its size and shape deviations are well known. The position of the sphere on the granite workbench is also known (usually there is a special fixture in the center of the workbench). The probe must contact multiple points of the sphere and determine its diameter and shape deviations. Then adjust the measurements according to their deviations and measure the sphere again to ensure that the correct settings are saved. CMM for complex surface measurement The main purpose of CMM is to measure complex surfaces. This is why CMM can fully realize its potential when they are used for turbine blades, aircraft wings, pump impellers and other components with special surfaces. If you are making a large number of identical parts, and they are very accurate, you must check each part, then the automation of such operations is also possible. However, in most cases, these parts are measured manually by the machinist. In order to measure complex surfaces, the machinist will use the remote control to manually move the probe along the three axes until the probe contacts the part the machinist needs. Then, after a large number of measurements, the points are analyzed and the contour of the part is connected into a spline. The measurement results are then compared with the 3D model of the part (including acceptable deviations) or some other data showing the required dimensions. CMM for relationship and formal deviation The characteristics of most high-quality parts lie not only in their size error, but also in the precision of their surface shape and the relative position between them. These deviations are particularly important for reducing vibration and ensuring smooth motion of rotating parts. CMM measurements of such deviations are not very different from measurements of complex surfaces. All form and relationship deviations have a base against which to compare. Therefore, in order to meet the accuracy requirements, you must clamp the part on the base plane and measure the required part. If we talk about the relationship between two surfaces, just design a fixture to clamp the first surface and measure the second surface.

2022

12/07

Compare CNC processing with injection molding: which method is suitable for you?

It is a common practice to create items from molds. Most kitchens have a range of cookie cutters, cake cans or jelly molds. The products made by molds are full of our families, cars and hospitals. They are also essential for aerospace and national defense projects. Therefore, molds are very common for household products and spacecraft parts. Manufacturers use injection molding to manufacture parts for many consumer and industrial applications. The method includes melting the raw material and injecting it into the mold under high pressure. In large batches, injection molding provides low cost and relatively competitive speed. For parts requiring higher accuracy, such as medical devices or parts commonly used in national defense and aerospace applications, other manufacturing methods may provide better results. CNC machining In these cases, consider CNC or CNC machining. CNC machining workshops use software controlled milling, turning and drilling equipment to manufacture plastic parts, which can remove materials layer by layer from solid blocks. This method has obvious advantages in terms of time, cost, accuracy and performance of the products you design. The advantages and disadvantages of CNC processing and injection molding are described in detail below to help you make the best choice for the production of the next prototype or part. Advantages and disadvantages of injection molding To compare and contrast injection molding and NC machining, first of all, we should understand the advantages and disadvantages of injection molding. Advantages of injection molding When manufacturing a large number of almost identical parts, most manufacturers choose injection molding. This process supports everything from toys to car engine parts - anything that needs to be mass produced with moldable plastic. Injection molding provides a variety of materials, and more materials are being created regularly to meet the demand for high-performance plastic parts. Although CNC processing cannot adapt to soft parts requiring TPE or rubber materials, injection molding can. Plastic CNC processing Disadvantages of injection molding When the batch size is large, the single piece price of injection molding is low. The costs associated with manufacturing the actual molds for injection molding drive up start-up costs. Certain materials, such as glass fiber reinforced plastics, require molds made of hardened tool steel to cope with increased pressure. Another disadvantage of injection molding involves costs associated with part replacement, which often requires the production of new tools or molds. In addition, the mold consists of two halves that must be placed together for injection, resulting in potential surface defects. The injection system will introduce bubbles into the material, causing further defects. There are many good reasons to use injection molding, especially in the mass production of parts. According to your product use, material specification and required quantity, CNC processing may provide a better solution for purchasing high-quality plastic parts. Advantages of CNC processing and precision parts injection molding When evaluating injection molding and plastic CNC processing, the following four aspects need to be considered:  Quantity: Generally, CNC machining can provide faster delivery speed and lower cost to reduce the number of parts. The exact number threshold for cost reduction in injection molding depends on part size, part complexity, and material selection.  Speed and cost: CNC processing provides higher speed for small batches. Or rapid prototyping or limited part production runs without breaking your development budget, and machining provides faster turnaround time at lower costs. For tens of thousands or hundreds of thousands of production, injection molding is usually more meaningful.  Precision: machined parts provide you with more control and fewer variables when dealing with precision tolerances. Machining focuses on the precise specification of the part itself, rather than injection molding, which considers the tolerance of the mold rather than the part. When absolute precision is required for the final product, especially for aerospace, medical and defense applications, CNC machining usually provides more accurate results.  Performance: For high-performance hard plastics that cannot be molded, the manufacturer selects CNC for processing. Some applications require hard plastics that must be processed. Melting and re hardening of plastic in injection molding may bring undesirable changes to the material properties of final parts. Plastic cnc processing Injection molding and cnc processing both provide high-quality methods to produce the best possible products. each method has its own advantages and disadvantages. Many end products include combinations of components made by each method. To make the best choice for your production needs, seek the help of the manufacturing experts who best understand these methods. Choose the right approach for your next project The machine shop will see various parts requirements and understand the capabilities of different manufacturing processes. They have first-hand experience in using various materials and make wise choices for your products. With this knowledge and experience, experts will advise on the best methods for your components.

2022

12/06

Discussion on Five axis Machining and Manufacturing Guide for Aviation Precision Parts

Aerospace technology has always been a fascinating story. From aviation pioneers to the International Space Station and the next generation of spacecraft, the space race has been going on for many years. However, one part of this story is unknown: in order for us to marvel at these magnificent planes and spacecraft that conquered the final border, someone must first build the hardware that makes this happen. Five axis machining of aviation precision parts Although high precision is required for any type of manufacturing, the aerospace sector needs parts that are machined as accurately as possible. After all, space flight can put incredible pressure on aircraft. The high performance of the spacecraft itself, coupled with the rapidly changing environment that the spacecraft has gone through, requires that each component be carefully manufactured according to its specifications. Without this level of accuracy, these components may fail. The following are the challenges faced by aerospace companies and details of the manufacturing of precision aerospace parts by skilled CNC machining workshops that are critical to success. Parts Challenges for Aerospace Companies There are many challenges related to the manufacture of parts for aerospace applications, but the top challenge revolves around quality.   Material quality Aviation parts may require the use of materials not commonly used in conventional manufacturing. According to their applications in aircraft and spacecraft, the metals used to manufacture aerospace components require different tempering temperatures. These materials must meet certain certifications and not all machining shops have the expertise required to use them. For example, 6061 aluminum has a difference between the certified grade and the canned material. Not all machining shops are capable of using the aluminum grades required for aerospace applications. Manufacturing quality The design of aerospace parts can also be very complex, and precise tolerances must be observed in the manufacturing process. This requires a high level of precision manufacturing, which not all companies can do. For example, 3D printing will produce high-quality parts, but they may not have the durability required for flight. On the other hand, CNC machining uses automated tools to accurately manufacture parts from solid materials, giving them the strength required for application. Quality in manufacturing Another important aspect of aerospace parts manufacturing is the process used in the manufacturing process. Many do not pay attention to the details required for manufacturing precision parts, and may even produce parts that are not 100% complete. This will not only cause problems in the final product of the part, For precision parts that meet the requirements of aerospace industry, it is important to cooperate with machining workshops with the following conditions to ensure their work quality:  Materials: The first step in making aerospace parts is to ensure that the best materials are used for the parts. The machining workshop set up for aviation parts manufacturing should have a network of suppliers from which they can purchase the best quality materials.  Certification: The workshop shall also have experience in using materials that have been certified and can be used in aerospace, and have a deep understanding of its certification requirements. They should also know how to apply these certifications in the production of industry products and be able to obtain any certification materials required for your project. In addition, the workshop should hold a wide range of other certifications to cover processes, such as ISO9001 for quality management and first article inspection.  Process: Another important aspect of becoming an aviation parts manufacturer is to have a clearly defined workflow, which can repeat the manufacturing of precision parts. In order to ensure the strength required for aerospace applications, parts shall be processed by CNC through milling, turning and other processes, so that they can adapt to complex geometric shapes and strict tolerances, and strict parts can be manufactured with solid materials.  Engineering: Precision parts in the aerospace industry must be produced according to detailed CAD/CAM information to achieve the highest quality level. The best machining workshops use your CAD data and drawings you provide to capture every specific detail of the part, including unique finishing or other key requirements. This requires the workshop to have an experienced engineering team working with the manufacturing department to produce the required level of accuracy for aviation parts.

2022

12/06

Precision machining of aerospace cnc parts - requirements for technology, materials, inspection, quality control, etc

Aerospace is an important support for the manufacturing industry. From development to finished products, aerospace manufacturing plays the most important role. What aerospace manufacturing technologies are used? How to find the right materials for aerospace parts? In this article, we will introduce common aerospace manufacturing methods, materials, inspection and quality control. Aerospace Manufacturing Technology Once the part design is approved, production can begin. The manufacturing process shall be selected according to the production volume and the required delivery time. Additive manufacturing Additive manufacturing (AM) refers to the process of creating physical components from a virtual 3D computer model by adding materials (usually layered). Common additive manufacturing technologies include 3D printing, sheet lamination, material extrusion, etc. Aerospace is one of the pioneer industries of additive manufacturing, which is characterized by small batch and manufacturer specific adaptability. Additive manufacturing can be used to create unique geometries and lattice structures that reduce weight and contribute to heat dissipation. Manufacturing semi hollow parts with advanced materials can reduce weight while maintaining strength, which is in line with the development trend of aerospace products and is also an excellent technology. Additive manufacturing is designed for small quantities of aerospace parts, cnc machining The accuracy of aircraft is crucial. From the fuselage to small parts, CNC machining services can accurately produce specific aviation parts and tools. For example, CNC machines can even create almost invisible parts inside the engine, or modify the wings of an aircraft extremely precisely to ensure that the wings work efficiently. CNC machining is a good choice when the finished parts need additional finishing accuracy, or require accurate dimensions and good surface finish. Materials of aviation parts Based on the unique characteristics and requirements of aircraft structures, complex parts made of lightweight materials are the first choice, thus determining which materials are suitable for the industry. With the development of modern technology, more and more alternative materials have emerged to make lighter, more aerodynamic aircraft that can withstand more extreme environmental conditions, such as new composites and alloys. Here are some popular aerospace materials. – Stainless steel: Stainless steel 17-4 PH is widely used for aerospace CNC processing or 3D printing because of its high strength, good corrosion resistance and good mechanical properties at temperatures up to 600 ° F. – Aluminum: With its high strength to weight ratio, aluminum is an ideal choice for supporting high load aircraft housings and supports. In addition, it is easy to process and cost-effective. For nearly a century, the aerospace industry has relied on aluminum to make parts. The most commonly used aluminum alloy in aerospace is 7075 aluminum, which is as strong as steel, with good fatigue strength and average workability. – Titanium: Titanium is a combination of light weight, high strength, corrosion resistance and high temperature resistance. Today's commercial aircraft use much more titanium than previously designed aircraft. Titanium parts are usually used to manufacture the fastening components, fuselage and landing gear of aircraft such as aircraft jet engines and spacecraft, as well as engine components including disks, blades, shafts and shells. Titanium 6AL-4V alloy accounts for almost 50% of all alloys used in aircraft. Aerospace components made of titanium consume less fuel using a high weight to strength ratio. – Inconel: a nickel chromium superalloy, usually used for 3D printing of rocket engine components and other aerospace applications requiring high temperature resistance. – Composite materials: including carbon fiber, glass and aramid reinforced epoxy resin. The composite materials are light in weight and can be used to manufacture fuel efficient aircraft. They can also withstand high resistance and fatigue and are suitable for making wings. Precision machining of aerospace cnc parts Aerospace inspection and quality control Inspection must be carried out after the manufacturing process, especially for aerospace parts. In the aspect of quality control in the aerospace industry, each small part shall meet specific quality standards and certification. The most important certification in aerospace is AS9100D. AS9100D is an aerospace industry quality standard adopted from the ISO 9000/ISO 9001 standard.

2022

12/06

Discuss with you the role of cnc processing precision parts in medical, aviation, automotive and other industries

CNC machining quality is stable, machining accuracy is high, and repetition accuracy is high. Under the condition of multi variety and small batch production, CNC processing has high production efficiency, which can reduce the time for production preparation, machine tool adjustment and process inspection. Milling is the most common type of NC machining. The rotary cutting tool involved in the milling process removes small pieces of material from the workpiece to form the workpiece or punch holes. CNC milling process can process a variety of different types of metals, plastics and wood to accurately manufacture complex parts. With the development of CNC processing equipment over time, it provides more complex milling functions at a faster speed. The global NC machining market is expected to continue to grow exponentially, partly due to the continuous progress of technology. These include everything from micro precision parts used in spacecraft to large ship propellers. The following is more information about CNC machining applications available today. Manufacturers use CNC machining to manufacture components for many industries. CNC milling machines and lathes can be used to mass produce products or to manufacture some customized parts. This ability to precisely customize components is a key reason why many manufacturers use CNC to process and manufacture parts. Although machining workshops use milling and lathes to manufacture parts for industrial applications, some industries rely entirely on CNC machining services to process certain parts. Aerospace parts CNC milling plays an important role in the manufacturing of aerospace components, and standardizes the process. Aerospace equipment uses a variety of hard metals and special materials to manufacture parts with decorative to critical functions. CNC milling can better complete difficult to machine materials, such as nickel chromium superalloy Inconel. Milling is also essential for manufacturing precision steering equipment. Agriculture The machining workshop also uses CNC milling machines to manufacture many parts for agricultural equipment manufacturing. Large scale and short-term production capacity Auto parts Since the introduction of Henry Ford's Model T in 1908, automobile manufacturers have been using new technologies to simplify production. More and more automobile assembly lines use automation to improve efficiency, and CNC machining is one of the most valuable tools for automobile manufacturers. As one of the largest industries in the world, electronic products benefit greatly from numerical control processing. The versatility and accuracy of this technology make CNC milling machines and lathes particularly suitable for molding various plastic polymers, as well as conductive metals and non-conductive dielectric materials. Motherboards and other electronic hardware require precise configuration to provide fast and complex performance. Milling can produce tiny engraving figures, precision machining and machining depressions and holes, as well as other complex features of electronic parts. Energy industry accessories The energy industry uses CNC processing to mass produce components for various applications. Nuclear power plants need very precise parts, and the natural gas and oil industries also rely on CNC processing to produce parts that keep fuel flowing. Suppliers of hydropower, solar energy and wind energy also use CNC milling and turning to manufacture system components that ensure continuous power generation. Another industry that requires strict tolerances for safety critical applications of CNC lathes is the oil and gas industry. The department uses CNC milling machines to manufacture precision and reliable parts such as pistons, cylinders, rods, pins and valves. These parts are usually used in pipelines or refineries. They may need a small specific amount. The oil and gas industry typically requires corrosion-resistant, workable metals, such as 5052 aluminum. Medical equipment parts Medical manufacturers use CNC milling machines and lathes to manufacture necessary medical equipment and tools, including prosthetics that require precise and unique design. CNC processing enables medical devices to retain precise design features on a variety of metal and plastic substrates and quickly create components and products, so that the company can stay ahead of the medical technology curve. Because this process is applicable to one-time customized parts, it has many applications in the medical industry. The strict tolerances provided by CNC machining are critical to the high performance of medical components. Automation equipment parts Mechanical automation and intelligence are becoming more and more popular. Many automation industries need to design and customize according to customer requirements to meet the different needs of customers. All technologies require precision to work properly. CNC milling machine follows the design to the final details. This ensures that products with multiple parts and layers can be quickly assembled without errors or dislocations. At the same time, NC milling is fast and convenient. You only need to set up the machine to quickly finish the milling of parts according to the settings. CNC can also create various replacement parts. This is because the turnaround time is fast and there is no minimum required number of parts. CNC milling has many applications in various industries. No matter which industry you are in, there will certainly be some type of CNC processing practice suitable for your needs.

2022

12/06

Discussion on the advantages of five axis cnc machining for aviation parts

There are more than 500000 parts in an airplane, a space plane or just a flying airplane, and a large part of them must be very precise and durable. Ensuring that these parts have the best quality and cost is an important goal of industrial aerospace processing. Problems in the production of aviation parts There are many problems in aerospace five axis precision machining. First, a large number of aerospace components are made of a wide range of materials. The most critical engine components in aircraft work are made of heat-resistant hardening alloys that are extremely difficult to machine. The thermal conductivity of these alloys is poor, so the heat during processing will accumulate in the tools. Nickel alloys are usually aged or otherwise heat treated and therefore difficult to machine. Compared with other industries, the precision of aerospace parts is much stricter, and the geometric shape of parts is much more complex. In addition to direct processing problems, there are many indirect problems. One of them includes production standards. Like the medical industry, aerospace production is one of the most regulated industries in the world, and it is difficult to meet all quality requirements. Weight is extremely important for airspace aircraft. The lighter the design, the less fuel is consumed, so aerospace engineers often design parts with thin walls, lattices, webs, etc. Traditionally, they are machined from solid cast or stamped metal blocks, and the scrap of such parts is 95%. However, low material efficiency is not the only problem. The actual problem when machining such parts is the deformation caused by high cutting force If you increase the feed rate and cutting depth too much, especially for nickel alloys, the wall may be broken due to vibration or deformed due to overheating. The result is usually that you cut off a tiny chip when crawling, and the total processing time is impossible. What can you do to reduce processing time and actually process competitive thin-walled aerospace parts? The first thing you must do is reduce the vibration. The vibrating tool hits the thin wall and bends or breaks. Therefore, in order to reduce vibration, it is better to reduce the feed rate but increase the number of cutting edges of the milling cutter (even using multiple cutters on the lathe). The best cutting strategy for thin-walled aerospace parts is forward milling. This strategy uses feed in the opposite direction to the traditional milling strategy. This results in less cutting force, better surface finish, and most importantly, the milling cutter enters the material with the thickest wall thickness, so the vibration is much smaller. To deal with overheating, Cycloidal machining path for reducing overheating of aerospace alloys Overheating of parts due to poor heat conduction is a typical problem of aviation parts. A machining strategy to reduce heat accumulation is called cycloidal milling. It makes great use of the functions of CNC machine tools to follow complex cutting paths. The cycloid strategy uses a small milling cutter (smaller than the cutting in any case) that follows a path similar to the side projection of a spring on a plane. One curve - the cutter cuts, then returns during the second curve, and then cuts the metal again. This strategy allocates the contact time between the tool and the part so that there is time for the cutting fluid to effectively cool both. Cycloidal turning is similar to milling, using short cutting and pause sequences to allow the coolant to function and avoid overheating. This strategy has more empty tool runs than other strategies, but it counteracts this effect by increasing cutting speed and feed. Select the right tool for rapid machining Speaking of machine tools, numerical control machine tools have played a great role, and they have been widely used in aluminum processing. One of the most important ways to improve machining efficiency is to choose the right tool. If the softer alloy is well analyzed, and many manufacturers provide solutions for aluminum and other alloys. However, many aerospace materials are classified, so they must be selected on site. The technique of selecting effective tools for heat-resistant materials must counteract the negative characteristics of the material. Therefore, a perfect tool must have very small vibration, must be very hard, and must be able to withstand high temperatures to have a consistent service life and efficient feeding. A perfect example of a tool for this purpose is a diamond cutting tool. Artificial diamond blades are harder and more durable than cemented carbide blades, and can work at higher temperatures. Diamond machining has its particularity, but it can certainly be modified to meet the needs of aerospace manufacturers. In addition to diamond tools, ceramic tools have also proved to have excellent performance because they can work at the highest temperature. In order to reduce the vibration of machined parts, it is important to use milling cutters with more cutting edges and more sharp edge angles. This type of milling cutter minimizes the time and distance that passes before the next cutting edge hits the material, reducing vibration, and you can increase cutting parameters to improve efficiency.

2022

12/06