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

Precision parts processing technology is the key bottleneck technology of advanced equipment manufacturing. Nanometer precision is known as the "pearl on the crown" of ultra precision processing technology. In the past, due to the backward processing technology of optical parts in China, it was impossible to process optical parts with large diameter, high precision and complex surface shape, which seriously restricted the technological progress in related fields. In the mold manufacturing enterprise, in addition to the process means of slow wire cutting and cutting with more repairs, the other method used in the finishing stage is grinding on the basis of heat treatment after semi finishing. In this stage, many technical parameters such as deformation, internal stress, shape tolerance and dimensional accuracy of parts should be controlled. In the specific production practice, there are many difficulties in operation, but there are still many effective experience methods worth learning from. The origin of precision and ultra precision machining technology can be traced back to the primitive society in a certain sense: when primitive humans learned to make stone tools with a certain shape and sharp edge, it can be considered that the most primitive manual grinding process appeared; After the Bronze Age, people made various kinds of copper mirrors with smooth surfaces, which were made by grinding and polishing. However, in modern times, precision machining in its true sense emerged. The most typical example is the invention of precision boring machine. Therefore, the development of domestic ultra precision machining technology basically starts from the research of ultra precision machining equipment. Since the foundation of ultra precision machining equipment is ultra precision components, including aerostatic spindles and guides, hydrostatic spindles and guides, etc., various units also take ultra precision basic components and natural diamond tools for ultra precision machining as breakthrough points, and have made some progress very soon.

Protective device of Shenzhen machinery processing factory. It is used to isolate the operator from the rotating part, live part of the machine and equipment and the harmful substances generated during the processing. Such as belt cover, gear cover, electrical cover, scrap iron baffle, protective railing, etc. Safety devices. It is used to improve the working reliability of machine tools. When a component fails or overloads, the safety device acts to quickly stop the equipment or turn to no-load operation. Such as travel limiter, friction clutch, etc. Interlocks. It is used to control the operation sequence of machine tools and equipment to avoid accidents caused by uncoordinated actions. If the lathe screw rod and polished rod cannot operate at the same time, electrical or mechanical interlocking devices shall be installed for control. Signaling device. It is used to indicate the operation of machinery and equipment, or send out color, audio and other signals to remind the operator to take emergency measures to deal with when the machinery and equipment are out of order. Such as indicator light, buzzer, electric bell, etc.

In the process of automatic machining and cutting, it is necessary to judge the normal wear condition and abnormal damage condition of tools by means of sound monitoring, cutting time control, pause inspection during cutting, workpiece surface analysis, etc. Tools shall be handled in time according to the processing requirements to prevent the processing quality problems caused by the tools not being handled in time. CNC machining is a kind of process, which is widely used in the mechanical industry. It refers to the process of machining parts on CNC machine tools. In numerical control processing, numerical control machine tools and numerical control systems will be used. Numerical control machine tools are machine tools controlled by computers, and the instructions of numerical control systems are a set of instructions compiled by programmers according to the material of workpieces, processing requirements, characteristics of machine tools and the instruction format specified by the system. The machining process flow is the step of workpiece or part manufacturing. The process of directly changing the shape, size and surface quality of the blank into a part by using the machining method is called the machining process flow. For example, the processing process of an ordinary part is rough machining - finishing - assembly - inspection - packaging, which is a general process of processing. The machining process specification is one of the process documents that specify the machining process and operation methods of parts. It is a process document written in the specified form by a more reasonable process and operation method under specific production conditions and used to guide production after approval. Shenzhen machining refers to the process of changing the overall dimension or performaCNCe of the workpiece through a kind of mechanical equipment. According to the differeCNCe in processing methods, it can be divided into cutting and pressure processing. Processing content Various cutting machines process various metal parts; Sheet metal, welding, metal structure processing; Mechanical processing of titanium alloy, high-temperature alloy, nonmetal, etc; Design and manufacture of non-standard equipment.

In the manufacturing industry, precision small parts processing is a market with strong growth. The demand for these components in the medical, hydraulic, connector, automobile, information electronic technology and household appliance industries has risen rapidly. In addition, in the aerospace and national defense industries, equipment control systems are increasingly equipped with electronic and hydraulic components, so suppliers in these industries have also become active users of small tools. The processing of precision parts is mainly about size requirements, such as the cylinder diameter. There are strict requirements. Only qualified parts with positive and negative errors within the specified requirements, otherwise they are unqualified parts; There are also specific and strict requirements for length, width and height, and there are also provisions for positive and negative errors. For example, if the diameter of an embedded cylinder (take the simplest basic components as an example) is too large and exceeds the allowable range of errors, it will result in failure to insert. If the actual diameter is too small and exceeds the lower limit of allowable negative values of errors, it will result in too loose and unstable insertion. Precision parts processing is difficult to compete with large European and American companies in terms of technology innovation and commodity research and development. However, with the influx of foreign capital and the intensification of the work competition, the domestic machinery parts processing work has increased its investment in independent development, which has already achieved infinite results. In particular, the mechanical measuring instrument manufacturing company has broken through in digital display skills and digital display hardware measuring tools. Before the processing of precision parts in Shenzhen, check whether the moving part is filled with lubricating oil, then start and check whether the clutch and brake are normal, and idle the machine for 1-3 minutes. It is strictly prohibited to operate in case of mechanical failure. When replacing the die, first turn off the power, and then start to install and debug the die after the punch movement department stops running. After installation and adjustment, move the flywheel by hand to test punch twice, and check whether the upper and lower molds are symmetrical and reasonable, whether the screws are firm, and whether the blank holder is in a reasonable position. All employees shall check whether their clothes meet the work requirements before entering their posts.

With the widespread use of steam engines and the subsequent development of large machinery such as mines, metallurgy, ships and locomotives, more and more metal parts need to be formed and cut, and the metal materials used have developed from copper and iron to steel. The rapid development of mechanical processing (including casting, forging, welding, heat treatment and other technologies and equipment, as well as cutting technology and machine tools, cutting tools, measuring tools, etc.) ensures the supply of various mechanical equipment required for the development of production. The domestic CNC machine tools have gone through a long history of 50 years of development, and have achieved rapid development in the past 10 years. In particular, they have received the attention of the government, set up a major technology research project, and effectively promoted the development of CNC machine tools. The functions of CNC machine tools are constantly enriched, and centralized and compound technologies of working procedures and processes are adopted; Machine tools have made new development in structural layout and application of new materials; CNC technology has made new development in the aspects of openness, intelligence, networking, high speed and high precision. The concept of numerical control processing in Shenzhen is numerical control processing, which refers to a process method for processing parts on numerical control machine tools. The processing procedures of numerical control machine tools are generally consistent with those of traditional machine tools, but significant changes have also taken place. A machining method that uses digital information to control the displacement of parts and tools. The production efficiency is high in the case of multiple varieties and small batch production, which can reduce the time for production preparation, machine tool adjustment and process inspection, and reduce the cutting time due to the use of the best cutting amount.

The machining process flow is the step of workpiece or part manufacturing. The process of directly changing the shape, size and surface quality of the blank into a part by using the machining method is called the machining process flow. For example, the processing process of an ordinary part is rough machining - finishing - assembly - inspection - packaging, which is a general process of processing. In the process of the development of human society, the growth of population, the rapid growth of economy, the acceleration of urban natural resources, the increase of consumption, and the extensive economic growth mode have caused serious waste and pollution of natural resources, and any disorderly discharge, resulting in a deteriorating living condition of the ecological environment. The role of Shenzhen machining precision machining center is developed from CNC milling machine. The biggest difference between the CNC milling machine and the machining center is that the machining center has the ability to automatically exchange the machining tools. By installing tools with different purposes on the tool magazine, the machining tools on the spindle can be changed through the automatic tool change device in one clamping process to achieve multiple processing functions. The role of precision machining can meet more personalized product customization to a large extent. The progress of social civilization and the improvement of people's daily living standards have gradually surfaced in the pursuit of personalized materials. The CNC system sends out operation or termination information to the servo device and other functional components according to program commands to control various movements of the machine tool. When the part processing program is finished, the machine tool will stop automatically.

In the past, due to the backwardness of precision parts processing technology and equipment in China, it was impossible to process precision parts with small caliber, high precision and complex surface shape, which seriously affected the technical progress in relevant fields in China. For precision parts, the processing is very strict, and the processing procedures include knife feeding, knife discharging, etc. There are specific requirements for size and precision, such as the number of plus or minus micrometers of 1mm. If the size is too wrong, it will become a waste product. At this time, it is equivalent to having to re process, time-consuming and laborious, and sometimes even the entire processing material will be scrapped, which leads to increased costs. At the same time, the parts are definitely useless. Precision parts processing is a very important technology for the machine industry, because in many cases such a good technology is needed to better strengthen production. The role of precision machining is small. Precision machining varies from one digit to three digits. It is processed by simple mold, soft mold, or directly. The processing of Dalian precision parts is generally the usual mechanical processing process of turning, milling, planing, grinding, pliers, etc., as well as the cutting, drawing, drilling, tapping, etc. of fitters. Representative industries include aviation, aerospace industry, shipbuilding industry, construction machinery industry, machine tool industry, etc. The role of precision machining is to focus on small precision machining, which can largely meet more personalized product customization. The progress of social civilization and the improvement of people's daily living standards have gradually surfaced in the pursuit of personalized materials.

Numerical control processing refers to the processing in which the control system sends instructions to enable the cutter to make various movements that meet the requirements, and the technical requirements and processing technology requirements such as the shape and size of the workpiece are expressed in numbers and letters. It generally refers to the technological process of parts processing on CCNC machine tools. CNC machine tool is a kind of machine tool controlled by a computer. The computer used to control the machine tool, whether it is a special computer or a general computer, is collectively referred to as CNC system. The motion and auxiliary action of the CNC machine tool are controlled by the instructions issued by the CNC system. The instructions of the CNC system are compiled by the programmer according to the material of the workpiece, processing requirements, characteristics of the machine tool and the instruction format (CNC language or symbol) specified by the system. Shenzhen CNC machining priiple is the CNC machining process: First, the geometric information and process information on the part drawing to be machined are digitized, that is, the relative motion path of the tool and the workpiece, the transformation of the spindle speed and feed speed during the machining process, the switch of the coolant, the transformation of the workpiece and the tool, and other controls and operations are all compiled into a processing program according to the specified code and format, and then the program is sent to the CNC system. In the process of machining difficult to machine materials and high-precision materials, the tool wear rate is fast and the tool wear leads to the impact on the machining accuracy and the integrity of the machined surface.

Numerical control processing refers to the processing in which the control system sends instructions to enable the cutter to make various movements that meet the requirements, and the technical requirements and processing technology requirements such as the shape and size of the workpiece are expressed in numbers and letters. It generally refers to the technological process of parts processing on CCNC machine tools. CNC machine tool is a kind of machine tool controlled by a computer. The computer used to control the machine tool, whether it is a special computer or a general computer, is collectively referred to as CNC system. The motion and auxiliary action of the CNC machine tool are controlled by the instructions issued by the CNC system. The instructions of the CNC system are compiled by the programmer according to the material of the workpiece, processing requirements, characteristics of the machine tool and the instruction format (CNC language or symbol) specified by the system. Shenzhen CNC machining priiple is the CNC machining process: First, the geometric information and process information on the part drawing to be machined are digitized, that is, the relative motion path of the tool and the workpiece, the transformation of the spindle speed and feed speed during the machining process, the switch of the coolant, the transformation of the workpiece and the tool, and other controls and operations are all compiled into a processing program according to the specified code and format, and then the program is sent to the CNC system. In the process of machining difficult to machine materials and high-precision materials, the tool wear rate is fast and the tool wear leads to the impact on the machining accuracy and the integrity of the machined surface.

Machining error refers to the degree of deviation between the actual geometric parameters (geometric size, geometric shape and mutual position) and the ideal geometric parameters of a part after processing. The degree of conformity between the actual geometric parameters and the ideal geometric parameters after part machining is the machining accuracy. The smaller the machining error and the higher the degree of conformity, the higher the machining accuracy. In each process of machining, the process system must be adjusted in one way or another. Because the adjustment cannot be absolutely accurate, adjustment errors are generated. In the process system, the mutual position accuracy of workpiece and cutter on the machine tool is guaranteed by adjusting the machine tool, cutter, fixture or workpiece. Different processing materials, choose the same surface treatment method, processing results are different. Therefore, in order to achieve the required surface effect, it is also important to consider the selection of raw materials. The materials used by Shenzhen machining equipment shall meet the safety and health requirements, and materials harmful to human body and materials without safety and health inspection are not allowed to be used. Errors are inevitable in machining. If you want to ensure work efficiency, reduce material waste and reduce labor, you should ensure and improve machining accuracy. In machining, machining accuracy error is inevitable. Only by analyzing the factors that affect the error in detail, can corresponding preventive measures be taken to reduce machining error and improve machining efficiency.