China Shenzhen Perfect Precision Product Co., Ltd. company news

In the machining industry, processing accuracy often largely determines the quality of processed parts, and CNC precision parts processing itself is a demanding means of processing, its relative to traditional processing methods to achieve better results, there are many other processing methods do not have the advantages, then CNC precision parts processing what advantages? The following is a brief introduction for everyone:  1, multi-axis control linkage: in general, usually three axis linkage with the most, but through some adjustments can do four-axis, five-axis, seven-axis or even more linked axis machining center.   2, machine parallel: common machining centers whose function is also relatively fixed, you can put the machining center and turning center, or vertical, horizontal machining center combined together, which can increase the machining center processing range and processing capacity.   3, tool breakage warning: the use of some technical detection means, you can timely find the tool wear, damage to the situation, and alarm, so that you can do timely replacement of tools to ensure the quality of parts processing. 4, tool life management: can be multiple tools working at the same time and multiple blades on the same tool for unified management to improve production efficiency.   5, machine tool overload power-off protection: according to the production process load set the maximum load level, when the load reaches the set value, the machine tool can achieve automatic power-off shutdown, in order to implement the protective effect on the machine tool.  

Introduction to mechanical parts Machine element is also called machine part The basic elements of machinery are indivisible single systems that make up machinery and machines Pieces. Machine element is also called machine element Part) is the basic element of machinery, which is inseparable from machinery Single piece. Mechanical parts are a subject of studying and designing mechanical basic parts in various equipment Section is also a general term for parts and assemblies. Research and design of mechanical basic parts in various equipment is also a subject of parts And components. The specific contents of mechanical parts as a discipline include: 1. Zero Connection of components. Such as threaded connection, wedge connection, pin connection, key connection and spline connection Connection, interference fit connection, elastic ring connection, riveting, welding and bonding, etc. 2. Belt drives, friction wheel drives, key drives, harmonics that transmit motion and energy Transmission, gear transmission, rope transmission, screw transmission and other mechanical transmission, as well as transmission Shaft, coupling, clutch, brake and other corresponding shafting components. 3. The supporting parts (components), such as bearings, boxes and bases. 4. Lubrication system and seal for lubrication. 5. Other parts (components) such as springs. As a discipline, mechanical parts are developed from Design as a whole, comprehensively use the achievements of various disciplines, and study various foundations Principle, structure, characteristics, application, failure form, bearing capacity and design process of components Sequence; Research the theory, method and criterion of design basic parts, and establish the discipline The theoretical system based on the combination of practice has become an important basis for the research and design of machinery.

Non negligible mechanical parts In mechanics, even small parts have many classifications and great work Yes, although the parts are small, they are very useful. In modern society, the production of products The application of mechanical equipment is indispensable. There are many types of mechanical equipment, usually machines They are all composed of parts and components, while different types of equipment are composed of different component groups Cheng. Mechanical parts refer to indivisible single parts in machinery, which are machines It is also the basic element of the mechanical manufacturing process. his The manufacturing process generally does not require an assembly process. Such as bearing sleeve, bearing bush, nut Crankshaft, blade, gear, cam, connecting rod body, connecting rod head, etc. Nonstandard zero To put it simply, there is no certain standard part. Make customer parts Home Product Center New It will be easier to make than standard parts. It's not that complicated. We all know that improper operation in CNC lathe processing will affect the operator Personnel cause certain injuries, so we are using CNC lathes for non-standard The operating rules must be strictly followed during the processing of parts to ensure safety and CNC Specific precautions for lathe processing safety are as follows: 1. Before non-standard parts are processed Make preparations during the preparation period, and carefully check whether your clothes meet the work requirements Requirements must be strictly observed. 2. Check whether the equipment meets the normal working standard and the voltage of CNC lathe If it is stable, the socket must be triangular and the line must be grounded Before the formal operation, the CNC lathe shall be operated in an idle mode Carry out the test, and start the machine only when there is no abnormality. 3. In case of any abnormality when the CNC lathe is running, the machine must be stopped completely Check and remove the fault only after the operation is stopped.

Talking about CNC Machining CNC Machining refers to the processing workers using CNC Processing performed by tools. CNC exponential control machine tool is programmed by CNC processing language System, usually G code. With the development of our economic level, our science and technology are also constantly Development: CNC machining is an important technology of machine tools, Many users are not very familiar with CNC processing, and we are now giving you a general introduction And relevant knowledge so that we can better understand the products and use them. CNC machining CNC machining G code language tells CNC machine tools Which Cartesian position coordinate is used, and the feed speed and main Shaft speed, as well as tool changer, coolant and other functions. It has great advantages for manual processing, such as parts produced by NC processing Very accurate and repeatable; CNC processing can produce manual processing Parts with complex profiles that cannot be completed. CNC machining technology is now widely used It has been widely promoted. Most machining workshops have the ability of numerical control processing. CNC milling CNC lathe and CNC EDM wire cutting (EDM wire cutting). CNC machining center is a tool magazine with automatic tool replacement The number of workpieces that can be processed in a certain range Control the machine tool. Compared with traditional manual operation, CNC machining centers have the following advantages: 1. High processing precision and high processing quality 2. Multi coordinate linkage can be carried out, and parts with complex shapes can be processed; 3. When the shape and size of parts need to be changed, just change the CNC program Yes, save production preparation time 4. The machine tool itself has high precision and rigidity, and can be set with appropriate processing amount Increase processing efficiency 5. The machine tool is highly automated, reducing the labor intensity of workers 6. Batch production, easy to control product quality

What is machining? Machined parts refer to mechanical parts and components processed and formed by various machining equipment, It mainly refers to the processing method without chemical reaction (or very small reaction), namely Physical processing. According to the processing mode, mechanical processing mainly includes manual processing and numerical control processing. There are two major categories of engineering. What are machined parts? What is machining? Shanghai Yiyi Machinery Technology Co., Ltd Let's learn some knowledge together! Machined parts refer to all kinds of machines Mechanical parts and components processed by processing equipment mainly refer to no chemical reaction (or the reaction is very small), namely physical processing. According to the manufacturer Mechanical processing mainly includes manual processing and numerical control processing. Manual processing refers to the manual operation of milling machines, lathes, drilling machines and sawing machines by mechanical workers And other mechanical equipment to realize the processing of various materials, and manual processing is suitable for Home Product Center New Carry out small batch and simple parts production. Numerical control processing (CNC) refers to the use of numerical control equipment by mechanical workers for processing Some CNC equipment include machining center, turning and milling center, wire EDM equipment, screw Texture cutting machine, etc., NC machining processes workpieces in a continuous way, suitable for a large number of Parts with complex quantity and shape. Technical requirements for machining 1. Tolerance requirements (1) Undeclared shape tolerance shall meet the requirements of GB1184-80; (2) The allowable deviation of unspecified length is ± 0.5mm; (3) The casting tolerance zone is symmetrical to the basic dimension configuration of the blank casting. 2. Requirements for machined parts (1) The parts shall be inspected and accepted according to the process, and only after the previous process is qualified Transfer to the next process; (2) The machined parts are not allowed to have burrs; (3) The finished parts shall not be placed directly on the ground The machining surface shall be free from rust and corrosion, which may affect the performance, service life or Defects such as bumps and scratches on the appearance; (4) The surface to be finished by rolling shall be free of peeling after rolling; (5) The surface of the parts after heat treatment in the final procedure shall be free of oxide scale and shall be subject to fine processing The mating surface and tooth surface of the tool shall not be annealed; (6) The machined thread surface shall be free of defects such as black skin, bump, random thread and burr Sink.

What are the material requirements for machining precision parts? It is strictly forbidden to select materials for hardware parts processing, and high-quality materials can Ensure that the processing equipment will not be excessively damaged, and the finished product rate of the processed parts High precision and other aspects will have a good effect. It is strictly forbidden to select materials for hardware parts processing, and high-quality materials can Ensure that the processing equipment will not be excessively damaged, and the finished product rate of the processed parts High precision and other aspects will have a good effect. In case of purchased materials The material is not good enough. For example, the hardness of hard materials is too high, which exceeds the hardness of machined parts The processing equipment may be damaged and the workpiece may be affected Materials are not suitable for precision machining, except for parts made of special materials or Light cutting. So, what are the requirements for the use of materials when processing hardware parts? Home Product Center New The precision machining materials in the processing of hardware parts are divided into two categories: metal materials and non metal materials Metallic materials. For metal materials, the hardness is stainless steel first, followed by cast iron, followed by Copper, then aluminum. The processing of ceramics and plastics belongs to the addition of non-metallic materials Work; The main requirements for hardware parts processing are as follows. 1. The first is the requirement for material hardness. For some occasions, the hardness of the material is higher The higher the better, it is only limited to the hardness requirements of processing parts, and the processed materials cannot be too It is hard. If it is harder than the machine parts, it cannot be processed. 2. Secondly, the material is moderate in hardness and softness, at least one grade lower than the hardness of parts It also depends on the function of the processed components and the reasonable selection of materials for the components. In a word, the precision machining in the processing of hardware parts has certain requirements on the materials, and Not all materials are suitable for processing, such as too soft or too hard materials, The former is unnecessary for processing, while the latter cannot be processed. Therefore, we must pay attention to the density of the material before processing. If the density is too large The hardness is also very high, and if the hardness exceeds the hardness of the machine part (lathe tool), it is zero It can not only damage the parts, but also cause dangers, such as the flying out of the turning tool Hurt people, etc. Therefore, generally speaking, for mechanical processing, the material quality It should be lower than the hardness of the machine tool, so that it can be processed.

Which parts can be processed by CNC machining center? CNC machining center is applicable to complex processing, multiple processes, high requirements and multiple requirements Type of common machine tools and various tool clamps, which can only be added after multiple clamping and adjustment A part of a machine. The machining objects are mainly box parts, complex curved surfaces and special-shaped parts Parts, cladding parts and special processing. CNC machining occupies a very high position in CNC equipment. Many parts processing enterprises CNC machining center will be applied. What types of zeros can CNC machine What about pieces? It is believed that many practitioners know that CNC machining centers are suitable for complex There are many processes, high requirements, and various types of ordinary machine tools and tool holders are required And the parts can only be processed after multiple clamping and adjustment. The processing objects are mainly Box parts, complex curved surfaces, special-shaped parts, clad plate parts and special processing. (1) Box parts. Box parts generally refer to those with multiple hole systems, cavities inside, long, wide and high Parts with a certain proportion. Such parts are mostly used in machine tools, automobiles, aircraft manufacturing, etc Industry. Box shaped parts generally need multi station hole system and plane processing, and the tolerance requirements are relatively High, especially the form and position tolerance requirements are relatively strict, usually through milling, drilling, expanding Boring, reaming, spot facing, tapping and other processes require more tools. For machining box For the machining center of parts, when there are many machining stations, the workbench needs to rotate for many times For finished parts, horizontal boring and milling machining center is generally selected. (2) Complex surfaces. Complex surfaces play an important role in the mechanical manufacturing industry, especially in the aerospace industry Status. It is difficult or even impossible to complete complex curves with ordinary processing methods noodles. In China, the traditional method is to use precision casting, which can be imagined to be more accurate than Low. Complex curved surface parts, such as various impellers, air guide wheels, spherical surfaces, and various curved surfaces Forming mould, propeller and underwater vehicle propeller, as well as other free surfaces

Treatment method for turning over and twisting of hardware ① Press on the material. The traditional die design structure is overcome, and the material holding gap is opened on the discharge plate. In this way, the movement of the unloading plate in the stamping is stable, while the material ② Reasonable mold design. The arrangement of blanking sequence may affect the forming accuracy of stamping parts. For blanking of small parts of stamping parts, generally The blanking of small area is arranged to reduce the impact of blanking force on the forming of stamping parts. ③ Add strong pressure function. Namely, the pressing part of the unloading insert is thickened to increase the pressure on the material at the die side, thus inhibiting the production of stamping parts during blanking ④ The end of the punch edge shall be chamfered or curved. This is an effective way to reduce the blanking force. Reduce the buffer cutting force, which can reduce the stretching of the material on the die side The effect of material and distortion. ⑤ In daily die production, attention should be paid to maintaining the sharpness of the cutting edges of the punch and die. When the cutting edge is worn, the tensile stress of the material will increase  

The most common problem of machining sleeve parts is deformation, which not only wastes financial and material resources, but also wastes our energy; Then, how to prevent sleeve parts from deformation? The following sub section makes a summary of the correlation to share with you: A structural feature of sleeve parts is that the wall thickness of the hole is relatively thin, and the thin-walled sleeve parts are often deformed due to the influence of clamping force, cutting force and thermal deformation during the processing. Some process measures are often taken to prevent deformation: 1、 The rough and finish machining shall be carried out separately. In order to reduce the influence of cutting force and cutting heat, the deformation caused by rough machining shall be corrected in the finish machining. 2、 To reduce the impact of clamping force, the following measures shall be taken in process to reduce the impact of clamping force: 1. When adopting radial clamping, the clamping force should not be concentrated on a certain radial section of the workpiece, but should be distributed on a larger area to reduce the clamping force on the unit area of the workpiece. If the workpiece can be installed in an open ring of appropriate thickness, clamp it together with this ring. Special jaws with increased contact area can also be used. When positioning by holes, open spindle clamping should be adopted. 2. The clamping force should be located at the part with strong rigidity to improve the deformation of thin-walled parts under the clamping force. 3. Change the direction of clamping force, and change the radial clamping to axial clamping. 4. A process boss or process thread with enhanced rigidity shall be made on the workpiece to reduce clamping deformation. Clamps with special structure shall be used during processing, and the convex edge shall be cut off at the end of processing. 3、 Reduce the influence of cutting force on deformation: 1. Increase the main deflection angle and main rake angle of the tool, so that the cutting edge is sharp and the radial cutting force is reduced. 2. Separate the rough machining from the finish machining, so that the deformation caused by the rough machining can be corrected in the finish machining, and adopt smaller cutting parameters. 3. The internal and external surfaces are processed at the same time to offset the cutting force. 4、 The heat treatment is arranged between rough machining and finish machining to reduce the influence of heat treatment deformation; After heat treatment, sleeve parts will generally have large deformation, which can be corrected during finishing, but attention should be paid to properly increase the margin of finishing.

Mechanical processing has the advantages of low cost and high precision, so it is a commonly used processing method at present. Especially for large workpieces, mechanical processing has incomparable advantages, but what are the conditions that need attention in the process of mechanical processing? 1. When the workpiece is too high, it shall be roughened with cutters of different lengths in layers. After roughening with a big knife, the surplus material shall be removed with a small knife. 2. The flat bottom cutter shall be used to process the plane, and the ball cutter shall be used less to reduce the processing time; If there is slope and it is an integer, the slope cutter shall be used for machining. 3. Reasonably set the machining tolerance to balance the machining accuracy with the computer calculation time, and do more procedures to reduce the empty tool time. 4. The hardness of the blank material is high, so the reverse milling should be selected; The hardness of the blank material is low, so the forward milling should be selected. The first choice for rough machining is up milling, and the first choice for finish machining is down milling. 5. The machining equipment tool material with good toughness and low hardness is suitable for rough machining, while the tool material with poor toughness and high hardness is suitable for finish machining.