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

Turning threads is one of the most common processes for turning parts, so this article is an example of a common fault and solution for turning threads. When turning threads, there are various reasons for problems in the movement between the spindle and the tool, which may cause a fault when turning threads and affect normal production, and should be resolved in a timely manner. The following is a list of common faults and solutions. 1、Rough surface of thread   Failure analysis: The main reason for this problem is that the cutting edge of the turning tool is not smooth enough, the cutting fluid and cutting speed do not match the processed material, or the vibration generated during the cutting process.   Solution: Fine study the tool with oil or grinding wheel, choose the matching cutting fluid and cutting speed, adjust the position of various parts, and ensure the accuracy of each guide gap, so as to prevent the vibration generated during cutting.   2、Gnawing tool   Failure analysis: mainly due to the incorrect location of the turning tool installation, either too high or too low, and the workpiece clamping is not solid, the turning tool wear is too large   Solution: adjust the height of the turning tool, so that the tool tip and the axis of the workpiece is equal to the height 3、Random buckle   Failure analysis: The reason is that when the screw rotates for a week, the workpiece is not installed over the whole number of turns and caused.   Solution.   (1) When the ratio of lathe screw pitch and workpiece pitch is not an integer number, if the bed saddle is swung to the starting position by opening the opening and closing nut when the tool is retired, then when the opening and closing nut is closed again, the turning tool tip will not be in the spiral groove turned out by the previous tool, resulting in a messy buckle. The solution is to use the positive and negative turning method to return the tool, that is, at the end of the first stroke, do not lift the opening and closing nut, the tool along the radial exit, the spindle will be reversed, so that the turning tool along the longitudinal return, and then the second stroke, so that the reciprocating process, because the transmission between the spindle, screw and tool holder has not been separated, the turning tool is always in the original spiral groove, there will be no messy buckle.   (2) For threads where the ratio of the screw pitch to the workpiece pitch of the turning lathe is an integer number of times, the workpiece and the screw are rotating, and after lifting the opening and closing nut, at least wait for the screw to turn one turn before closing the opening and closing nut again, so that when the screw turns one turn, the workpiece turns an integer number of times, and the turning tool can enter the spiral groove turned out by the previous tool, so that there is no messy buckling. This way, you can open the opening and closing nuts and manually rewind the tool. This is a fast retreat, which is conducive to improving productivity and maintaining the accuracy of the screw, while the screw is also safer. 4、Pitch is not correct   Failure analysis and solutions.   (1) Improper matching of the hanging wheel or incorrect position of the handle of the feed box, resulting in incorrect thread length, can re-check the position of the handle of the feed box or check the hanging wheel.   (2) The local incorrectness is due to the local error of the pitch of the lathe screw itself, so the screw can be replaced or partially repaired.   5、The middle warp is not correct   Failure analysis: The reason is that the eating tool is too big and the dial is not allowed, and it is not measured in time.   Solution: Check in detail whether the dial is loose when finishing, the finishing margin should be appropriate, the cutting edge of the turning tool should be sharp, and it should be measured in time.

For precision parts, the processing is very strict, the processing process has a tool in, tool out, etc.. There are specific requirements for size and precision, such as 1mm plus or minus how many microns, etc. If the size is wrong too much will become scrap, which is equivalent to having to re-process, time-consuming and laborious, and sometimes even makes the entire processing material scrap, which causes an increase in costs, and at the same time, the parts are definitely not available. So precision parts processing in the end to follow what standards and requirements? For precision parts processing is mainly dimensional requirements, such as how much the cylindrical diameter, there are strict requirements, positive and negative error within the specified requirements to be qualified parts, otherwise they are unqualified parts; length, width and height also have specific strict requirements, positive and negative error is also specified, such as an embedded cylinder (take the most simple basic parts for example), if the diameter is too large, more than the error allowed range, it will Caused by, insert not into the situation, if the actual diameter is too small, more than the lower limit of the negative value of the error allowed, it will cause inserted too loose, not solid problems occur. These are unqualified products, or the cylindrical length is too long or too short, beyond the error tolerance range, are unqualified products, are to be scrapped, or re-processed, which will inevitably cause an increase in costs. Precision parts processing requirements is in fact the main size problem, must be strictly in accordance with another plus drawings for processing, processing out of the actual size will certainly not be the same as the theoretical size of the drawings, only, as long as the processing size within the error tolerance is qualified parts, so the requirements of precision parts processing is in strict accordance with the theoretical size for processing. Second is the advanced precision parts processing equipment and testing equipment, advanced processing equipment makes processing precision parts easier, higher precision, better results. Testing equipment can detect the parts that do not meet the requirements, so that all the products sent to customers really meet the requirements.

Hardware processing accounts for a large part of precision parts processing. Casting properties: refers to whether the metal or alloy is suitable for casting some process properties, mainly including flow properties, the ability to fill the casting mold; shrinkage, the ability of volume shrinkage when the casting solidifies; deviation refers to chemical composition unevenness.   Welding performance: refers to the metal material by heating or heating and pressurized welding method, two or more metal materials welded together, the interface can meet the characteristics of the purpose of use.   Top gas section performance: refers to the performance of the metal material can be granted top forging without rupture. Cold bending performance: refers to the metal material at room temperature can withstand bending without rupture performance. Bending degree is generally used to bend the angle α (outer angle) or bending center diameter d to the material thickness a ratio, a the greater or d / a smaller, the better the cold bending of the material.   Stamping performance: the ability of metal materials to withstand stamping deformation processing without rupture. Stamping at room temperature is called cold stamping. The test method is to test by cupping test.   Forging performance: the ability of the metal material to withstand plastic deformation without rupture during forging and pressing.

For the machining of automotive precision mechanical parts, the core of the entire factory process lies in the four main steps of stamping, welding, painting and final assembly. Welding is the second major step after stamping and is the main part of the body part processing. The body is a structural part made of thin sheets that are assembled and welded to form the body by stamping and forming the sheets. Therefore, the quality of the body is greatly influenced by the quality and appearance of the body. Welding is the most used shop for intelligent CNC lathe machining. The introduction of automotive welding robots has enabled multiple tasks including welding, handling, mounting, welding and unloading to be completed within working hours. This is the most obvious advancement in welding technology in recent years and has greatly reduced the manpower input for custom CNC machining.   In the link of parts processing, welding robots can automatically change wrist tools according to the preset work program and the nature of the task, and complete all set welding tasks within the specified effective time. Thus, the development of welding robots has greatly contributed to the development of automotive precision mechanical parts processing. For some home precision mechanical parts machining plants, a welded parts machining shop producing 200,000 vehicles per year typically requires at least 60-80 welding robots. For the average CNC lathe machining manufacturer, this is a significant investment. But the market competition ultimately depends on the technical strength of parts processing. In the future, the processing of intelligent automotive precision mechanical parts will be inseparable from welding robots. It is reported that Chery's A3 car production line has 62 welding robots; JAC's production line has 79 welding robots. Geely Baoji's auto production line has 128 welding robots ...... And, this application will be further deepened!

Staying afloat in the business competition of precision machining is important, but it can also be difficult. This is especially true if the nature of a good parts machining facility is characterized by the production of parts or products. Here are some ways a machine parts machining business can gain momentum and remain successful 1. Functional initiatives and data analysis   The employees of a good parts processing plant are a source of great strength. Inspiring them to perform to the best of their ability is helpful, and can be done by implementing quality methods programs such as lean manufacturing. Give your employees additional responsibilities to collect and analyze productivity data when they are challenged in the machining of mechanical parts. Once you can track the efficiency of what you do, it makes self-correcting errors an easy process. 2、Production by CNC machining   The products or parts you sell are most likely designed and assembled in an efficient manner through CNC machining. Hiring an advanced mechanical parts machining and manufacturing company to produce your products using their cutting edge CNC components saves money and helps growth. We, providing high precision machining solutions, are a highly advanced mechanical parts machining and manufacturing company. We are committed to quality, value and service, and want to use our capabilities to help your business realize more possibilities for its products.

In the control system of a CNC machinist's machine, it must be sequenced by code in order to perform CNC machining. In precision machining, the program must be entered into the machine's control system via a keyboard (keypad) or tape (cassette). When the system reads the input, it will be driven by the CNC machine drive motors (feed motors) to move the slider. Examples include a CNC lathe with two motors or a CNC milling machine with three motors.   In CNC machining process, the control system converts the code into electrical signals and then controls the motor operation. However, since the signal of the system is low power rotary motor drive as discontinuous operation. That is why it is necessary to send signals to the amplifier. CNC machinist's system drive amplifies and then sends the signals for precision machining to the motor and the horizontal axis, which is programmed to move. The speed and distance of the moving stage needs to be set manually by the precision machining operator as it is not visible to the CNC machining control system. When setting up the machine, the operator needs to observe the edge of the workpiece and the platform position by eye, which is prone to errors. Therefore, CNC machinists need a tool that can tell the control system the position of the platform and the position of the horizontal axis. This device is called a measuring system, which consists of a vertical scale (linear scale) and the same number of axial movement cores. It sends an electrical signal corresponding to the distance of the moving platform, so that the controller system knows the distance.  

In the Shenzhen precision machining industry, the preventive maintenance of CNC machine tools is crucial. Mechanical parts processing plant to strengthen the daily maintenance, the main content generally includes: daily inspection, weekly inspection, monthly inspection, quarterly inspection and semi-annual inspection. Shenzhen Perfect Precision Products Co., Ltd. combined with their own practical, talk about the preventive maintenance of CNC machine tools:. 1, CNC machine tools daily inspection   Daily inspection is based on the normal condition of the system to be tested. The main items are hydraulic system, spindle lubrication system, guide lubrication system, cooling system, pneumatic system, etc. For example, in the process of testing the spindle lubrication system, the power light should be on, the oil pressure pump should operate normally, if the power light is not on, the spindle should remain stopped and ask the master of precision machining for maintenance.   2, CNC machine tool weekly inspection   Weekly inspection of mechanical parts processing plant, its main items include machine tool precision parts, spindle lubrication system, should be properly inspected every week, especially machine tool precision parts to remove iron chips and external debris cleaning.   3, CNC machine tools monthly inspection   In the Shenzhen precision machining industry, the power supply and air dryer should be checked every month. Under normal circumstances, the power supply voltage rating of 180V-220V, frequency of 50Hz. if there are abnormalities, should be measured and adjusted. Air dryer should be disassembled once a month, and then cleaned and assembled. 4, CNC machine tool quarterly inspection   In the mechanical parts processing plant, quarterly inspection mainly from the machine bed, hydraulic system and spindle lubrication system three aspects. For example, when checking the machine bed, it mainly depends on the accuracy of the machine and whether the level of the machine meets the requirements of the manual. If there is any problem, the master precision machinist should be contacted immediately. When checking the hydraulic system and spindle lubrication system, if there is any problem, new oil 60l and 20l should be replaced and cleaned respectively.   5, CNC machine tool half-yearly inspection   After six months of processing, mechanical parts processing plant should check the machine tool hydraulic system, spindle lubrication system and X-axis. If any problems are found, the machine should be replaced with new oil, followed by cleaning work. After a comprehensive understanding and knowledge of preventive maintenance, it is necessary to better understand and necessary to master the causes and treatment of abnormal phenomena in the oil pressure system. For example, when the oil pump does not refuel, abnormal pressure, noise and other phenomena occur, the machine parts machining operator should know what the main causes are and what the corresponding solutions are.

With advances in precision machining technology, medical device manufacturing has become increasingly user-friendly. For nearly half a century, many machine parts fabricators have been providing fast, accurate and affordable medical devices, tools, parts and equipment. In one of the most demanding industries with the shortest turnaround times, a large number of medical devices rely on our correct, efficient and economical parts machining to move into applications.   From MRI and CT scan components, to cardiovascular and orthopedic implants, no company can do without the most accurate medical precision machining available in the market today. Unlike other types of mechanical parts fabricators that leave some room for error in manufacturing, medical parts machining means there is a 100% responsibility to perform precise machining for each component.   Automated precision machining has been around since the 1960s, and many of the modern materials used in our mechanical parts machining facility are cutting edge - as is the revolutionary use of the parts we produce. Our experience and craftsmanship are outstanding because we've been in the medical device parts you machine field for over 10 years. When you place an order with us, customers get the best combination of everything, from customer service and precision machining expertise to modern equipment and timely workflow.   In fact, today's leading physicians and medical technicians would not be able to achieve modern medical breakthroughs without the precision equipment they rely on. As patients increasingly look to science and medical technology to improve their quality of life, precision machining of medical devices is both exciting and demanding. Of course, we at Mechanical Parts Machining have long recognized that finding a trusted manufacturer is key to selling medical devices in today's competitive landscape, whether a customer wants a test prototype part machined or needs a new product line manufactured for sale.   Because our mechanical parts machining facility has a keen understanding of our customers' efforts to bring life-changing medical devices to market, we approach every order for precision machining with attention to detail so that these customers can reap the rewards. Accuracy and reliability are tied to our parts machining services. So when we manufacture parts for medical devices, it inspires trust and confidence in both the client company and the medical professionals who rely on the product in their daily work.

The quality of mechanical parts processing is good, only the customer will not have problems in the process of use, that is really good. As a high-precision parts processing products, inevitably encounter many factors in the use of the process of interference, precision machining plant should be as far as possible to reduce the impact of these adverse factors. Therefore, for mechanical parts processing suppliers, not only to ensure the quality of the product, but also to have enough powerful service, with quality products and services to let customers recognize our quality! Whether it is in the parts processing center, or leave the precision machining factory, the service should be tracked throughout the whole process.   For the customers of mechanical parts processing, the quality assurance of the precision machining factory is essential. If customers choose our precision machining factory, then we will definitely provide the whole life cycle of after-sales service. 10 years, many foreign customers come to us and choose to work with us for a long time, is to value our quality and service. 10 years, say no to poor quality products and services, we have such confidence! Many customers have complained to us, before looking for precision machining factory, once the delivery, it is not their business. Subsequent quality problems, do not know who to find to deal with. Since choosing to cooperate with our precision machining factory, there is never a worry. And because we always provide high-quality parts processing services, they are happy to introduce more friends to cooperate with us!  

In CNC machining factory, CNC machine tools with spindle motor, roughly divided into two kinds: one is a high-power motor with output gear shaft, the other is embedded spindle integral motor, that is, the spindle periphery wrapped coil, directly by the excitation effect of rotation. Shenzhen CNC machining factory programming and operation part are dependent on Siemens 840D system, so here is also an example of Siemens accessories to explain the working condition of the servo. In the process of CNC machining customization, the motor used on large boring and milling machines should have a very high torque to meet the processing requirements, such as tapping with a large tap; in addition, this motor should also have a high speed, such as the drilling process of small holes. These two extreme situations are often met by relying on a combination of high power motors with gearboxes As a mechanical parts processing operator, you must have a special understanding of the spindle motor, and the gearbox drive part will be further understood in the specific mechanical structure later, so as to deepen the understanding of the spindle motor for mechanical parts processing.