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

In the manufacturing process of mechanical parts, because the production requirements and conditions of various parts are different, the manufacturing process program is also different. The same parts using different process solutions for production, its production efficiency, economic efficiency is not the same. In the premise of ensuring the quality of the parts, the process of drawing up a good comprehensive technical and economic benefits, reasonable and feasible process program is called the process design of parts. 1. Production process from the design drawings into products, through a series of manufacturing processes. Usually the raw materials or semi-finished products into products through the entire process is called the production process. Production process usually includes:   (1) technical preparation process including market research, forecasting, new product identification, process design, standardization review, etc. before the product is put into production.   (2) or process refers to the process of directly changing the size, shape, mutual position of the surface, surface roughness or performance of the raw material semi-finished products, so that they become finished products. For example, liquid forming, plastic into shape, welding, powder forming, cutting and machining, heat treatment, surface treatment, assembly, etc., all belong to the process. The reasonable process will be written into the technical documents used to guide the production, this technical document is called process procedures.   (3) Auxiliary production process refers to the auxiliary production activities necessary to ensure the normal operation of the basic production process.   (4) production service process refers to the organization of raw materials, transportation, storage, storage, supply and product packaging, sales and other processes. 2. The composition of the process parts cutting process is a combination of many processes, each process is composed of stations, work steps, tool walking and installation.

Today we share with you what are the principles of precision mechanical parts machining? Specific principles are.   1, the benchmark first: that is, first processing the reference surface, parts in the machining process, as a positioning benchmark appearance should first be processed, in order to provide a fine benchmark for the subsequent processes as soon as possible.   2, divided into processing stages: machining quality requirements of the appearance, are divided into processing stages, generally can be divided into roughing, semi-finishing and finishing three stages. Mainly to ensure the quality of processing; conducive to the scientific application of equipment; to facilitate the arrangement of heat treatment processes; as well as to facilitate the discovery of defects in the blank. 3, first surface and then hole: for the box, bracket and connecting rod and other parts should be processed first plane after processing holes. This can be positioned with a plane to process the hole, to ensure the accuracy of the position of the plane and hole, and to bring convenience to the processing of the hole on the plane.   4, finishing process: the main appearance of the finishing process, such as grinding, honing, fine grinding, rolling processing, etc., should be placed at the end of the process route stage. The general principles of the development of precision parts machining process route, precision parts machining process protocols, can be divided into two links. First of all, the process route of parts processing, and then determine the process size of each process, the equipment and process equipment used, as well as cutting specifications, work quota.

Before precision machining auto parts, it is necessary to properly understand the knowledge related to precision machining in Shenzhen, so what are the technical points of precision mechanical parts processing? 1, simplify the repair and maintenance of the machine, save labor, mechanical cutting and processing functions, improve labor productivity;   2, sound absorption, shock absorption, MC nylon modulus is much smaller than metal, feel the attenuation is large, providing a useful path to prevent noise better than metal;   3, wear-resistant, self-smoothing, in the absence of oil (or de-oiling) than bronze cast iron carbon steel and phenolic laminate to provide better work performance, reduce consumption and save energy.   4, CNC center in the design of technical parameters can be set to impact the processing of parts. 5, mechanical parts processing of tungsten steel punching needle production and processing of high strength, can withstand the load for a longer period of time.   6, precision mechanical parts processing of tungsten steel punch round bar processing compared with metal, MC nylon hardness is low, do not damage the grinding parts.   7, mechanical parts processing of impact processing operations will be flexible, can be bent without deformation, coupled with patience and repeated impact.   8, high chemical stability, alkali, alcohols, ethers, hydrocarbons, weak acids, smooth oil, detergents, water (seawater), and has no odor, toxic tasteless, rust-free characteristics, widely used in alkali mechanical corrosion resistance, environmental cleaning, food, textile printing and dyeing and other parts and components used to provide the conditions.

What are the characteristics of precision parts machining? Five-axis machining center, is a kind of high technology, high precision, specifically for processing complex surface machining center, this kind of machining center system has a pivotal influence on a country's aviation, navigation, military, scientific research, precision instruments, high precision medical equipment and other industries. I. What is a five-axis machining center   Five-axis simultaneous machining has the characteristics of high efficiency and high precision, and the workpiece can complete complex machining in one clamping. It can adapt to the processing of current molds such as auto parts and aircraft structural parts. There is a big difference between five-axis linkage machining center and five-face machining center. Many people do not know this, mistakenly five-axis machining center as a five-axis machining center.   Five-axis machining center has X, Y, Z, A, C five axes, XYZ and AC axis to form a five-axis linkage processing, good at space surface processing, shaped processing, hollowing processing, punching, oblique holes, oblique cutting, etc.. The "five-axis machining center" is similar to the three-axis machining center, except that it can do five surfaces at the same time, but it cannot do shaped machining, such as punching bevel holes, cutting bevels, etc.   In addition, the five-axis machining center is very wide range of application, it is understood that the current five-axis CNC machining center system is the only means to solve the impeller, blade, marine propeller, heavy generator rotor, automobile machine wheels, large diesel engine crankshaft and so on processing. Second, the advantages of five-axis machining center   1、Reduce processing time and improve processing accuracy.   The most important feature of the five-axis machining center is that a one-time clamping can be processed on all five sides. It is also known as the processing angle avoidance. If it is a linkage machine, the C-axis can rotate without limit, and the A-axis can do about 130 degrees of rotation. These machine features allow machining without interference.   The advantage of this is that machining can be done in one clamping, i.e. avoiding the repeated positioning errors caused by multiple clamping. It also saves a lot of time and increases efficiency. It can reduce the time from product to shipment and reduce the amount of stock in the warehouse.   2、Reduce the investment cost of equipment, the area occupied by the workshop and the number of workshops.   Five-axis linkage machining center around the composite machining machine, usually with a car function, from even from lathe to milling machine to vertical grinding can be included in, we all know that the current price of vertical grinding equipment is very expensive, through the cost, processing beat and other accounting can be found five-axis cost-effective. Previously, we may produce and process mainly with engineering split type, the problem of such production method is that there is a large amount of waiting time can not be eliminated.   But the five-axis composite machining equipment represented by the engineering intensive production only need to wait for the initial commissioning time, and with the current popularity of various types of domestic machine simulation software, and even just need to import the blank data to complete the programming, but also can greatly reduce the preliminary preparation. So at present, foreign auto parts and high-end manufacturing are basically based on five-axis.   3、No special fixture is needed, and automation can be realized.   Another significant feature of five-axis is that the dependence on fixtures will be reduced, the regular workpiece can be clamped directly with three jaws and four jaws chucks, and the irregular workpiece can be clamped with two pins on one side. At the same time, five-axis machining center can realize the automation and less humanization of the factory. For example, the joints and bases of processing robots. Previously, it was a combination of horizontal and vertical machining, but now it only needs to use the zero-point pallet with the five-axis machining center to realize 24-hour running machining.

In the era without machinery, precision mechanical parts processing factory traditional processing methods not only affect the production speed of the workpiece, but also affect the quality of the workpiece, but the production speed is the basic survival of enterprises, especially in small and medium-sized enterprises to improve the volume of orders, production must also reach the standard, today's society only Shenzhen precision machining can reach this standard. Precision machining relies on advanced manufacturing technology, high precision, high efficiency automatic processing equipment, only good equipment can do the best. Precision machining process is to specify the parts precision mechanical parts machining process and operation methods and other processes, it is in the specific production conditions, the more reasonable process and operation methods, written in accordance with the prescribed form into the process documentation, after approval, used to guide production. Precision machining process procedures generally include the following contents: the process route of workpiece processing, the specific contents of each process and the equipment and process equipment used, the inspection items and inspection methods of the workpiece, cutting dosage, time quotas, etc.   There are many advantages of precision machining, first of all, precision machining can effectively improve labor productivity, increase production, have high economic benefits and reduce enterprise costs. Precision machining can also improve labor conditions, reduce labor intensity, shorten labor time, and improve the degree of civilized production. In addition, precision machining of mechanical parts can reduce production workers, plant area, shorten the production cycle, reduce production costs and save energy, so precision machining can be said to be a lot of benefits. Precision machining using automatic detection, monitoring devices, is conducive to improving and stabilizing product quality, flexible automated production, can quickly adapt to product changes, it can be seen that the impact of precision machining on industrial production is very great, but the preliminary investment in precision machining is too high, so companies can choose the excellent precision machining factory to carry out the processing of the workpiece, which not only reduces the cost, but also improves the quality.

First, the interchangeability of parts   Precision parts processing factory, the machine by long-term production operation, certain parts will inevitably wear, deformation and scrap, replaced with new parts. These parts are called accessories or spare parts. Accessories or spare parts without repair or selection, installed in the machine can be run, known as interchangeability.   In order to achieve interchangeability, when manufacturing parts, the size and geometry of the parts should be made consistent. The so-called consistent, not required to do exactly the same (this is neither economic nor possible), as long as the size of the parts, geometry, etc. control within a permissible range, so that the parts and other parts combined with the same combination of performance on the line. This is allowed range of error, that is, the shape tolerance. Second, the quality of precision parts processing with processing accuracy to express.   1. Geometric shape accuracy   Geometric shape accuracy refers to the composition of the parts of the surface or axis and other geometric shape of the degree of accuracy, such as whether the line is straight, whether the surface is flat, cylindrical cross-section is round, etc.. Its allowable range of change to "tolerance" to express, the smaller the shape tolerance number, the higher the shape accuracy. 2. Dimensional accuracy   Precision parts processing factory analysis, dimensional accuracy refers to the accuracy of the size of the parts after processing, to "dimensional tolerance" to express. When the size of the part is the same, the higher the precision, the smaller the tolerance figure.   3. Position accuracy   Precision parts processing factory, location accuracy refers to the accuracy of the mutual position between the surfaces of the components, such as whether the two planes are parallel, perpendicular, two axes are coaxial, etc., to "location tolerance" to express.

In machining, cutting tools are the basic technological equipment for cutting. They are in direct contact with the parts to be machined. Different tools can process different parts' structures and surfaces, which play a vital role in machining. They can be called "industrial teeth". As consumables, the tool itself has a certain life span. Different materials and specifications of tools have different life spans; For mass production, tool consumption also accounts for an important part of the processing cost. Therefore, it is a common problem for the manufacturing industry to improve tool life, control tool consumption, reduce processing costs and improve production efficiency. Existing technology Tool dressing is a way to improve tool life. However, the traditional manual equipment (such as manual grinder Fig. 1) can not meet the user's requirements in terms of precision, efficiency, reliability and safety. At the same time, enterprises also need to train professional tool grinding personnel, which increases part of the human cost. technological development Aiming at the above problems and combining the existing resources of the enterprise, we have developed a set of technical solutions that use CNC machining centers to achieve tool grinding automation: First of all, because the tool materials are generally hard, only grinding can be used to change its shape. Grinding wheel abrasive grains of different materials are suitable for grinding tools of different materials, and the size of abrasive grains required for different parts of the tool is also different, to ensure the best combination of edge protection and machining efficiency. Therefore, the first problem to be solved by using CNC machining center for tool dressing is the type and clamping mode of grinding wheel; Considering the low price of alumina grinding wheel, and easy to repair into different shapes for grinding complex tools, however, the tools that can be grinded are too simple (can be used to repair HSS (high speed steel) tools), and it is difficult to clamp and replace them frequently, so diamond grinding wheels that can repair more tools (HSS (high speed steel), PM-HSS (metallurgical powder high speed steel) and HM (cemented carbide steel) tools) are used. Lock the diamond grinding wheel onto the handle of the milling cutter with a special nut, so that the diamond grinding wheel can be clamped onto the cutter head of the CNC machining center and the spindle of the machine table. In addition, it is necessary to consider the clamping and positioning method of the grinding tool: use the telescopic cylinder to cooperate with the self-made elastic rigid jacket to clamp the tool, and fix the tool clamp on the four axis platform (as shown in Figure 2), so as to ensure the parallelism and straightness of the four axes erected, which can ensure the parallelism and straightness of the grinding tool, and at the same time, enable the grinding tool to move in the X axis, Y axis and a axis directions. With the movement of the machine table spindle in the Z axis direction, the tool edge can be grinded at different angles. Moreover, the most critical technology of using CNC machining center to repair mold tools lies in the use of the probe. The high-precision probe and the detection program input by the machining center can be used to confirm the tool grinding zero point, the tool grinding position, and the number of tool edges to be grinded. The measurement results of these variables are fed back to the CNC system of the CNC machining center to input the tool grinding program prepared in advance for tool grinding. Of course, in order to realize the automation of tool grinding, we also need to add an automated assembly line (Figure 6): through self design, we can get the material tray for placing the tool (Figure 4), so that the manipulator can accurately position the tool, thus realizing the loading and unloading of the tool. With the CNC processing center, as well as the assembly line device and the final high-precision detection device (Figure 5), we can achieve the complete automation of tool grinding. The specific machining process of CNC machining center tool grinding can take the grinding of end milling cutter as an example: for the worn end milling cutter, the worn blade must be cut off and reground to obtain the required blade. Of course, this needs to ensure the effective blade length of the cutter. If it cannot be guaranteed, the end milling cutter cannot be reground. For CNC machining centers, we can preset the maximum cutting length and the cutting amount each time. Each time the probe is cut out, it will be detected once, and the cutting amount will be accumulated once; If it is detected that the blade part is still missing, it shall be cut again, and other parts of the tool can be further grinded until the blade is complete; If the cutting amount exceeds the maximum cutting length, the tool cannot be reground. The next step is to grind the chip breaking groove, then grind out the back angle of the tool, and finally grind out the bottom edge of the tool. These can be achieved by using the matching movement between X axis, Y axis, Z axis and a axis through program design in advance.

What are the surface treatment methods for aluminum alloy die castings? According to the knowledge of the quick screen editor, the commonly used technologies are: aluminum phosphating, alkaline electrolytic polishing process of aluminum, environment-friendly chemical polishing of aluminum and aluminum alloys, electrochemical surface strengthening treatment of aluminum and its alloys, and YL112 aluminum alloy surface treatment technology. The details are as follows: 1. Aluminum phosphating The accelerant, fluoride, Mn2+, Ni2+, Zn2+, PO4 were studied in detail by means of SEM, XRD, potential time curve and membrane weight change; And Fe2+on the phosphating process of aluminum. Research shows: Guanidine nitrate is an effective accelerator for aluminum phosphating due to its good water solubility, low dosage and fast film formation; Fluoride can promote film formation, increase film weight and refine grains; Mn2+, Ni2+, can obviously refine the grains, make the phosphating film uniform and compact, and improve the appearance of the phosphating film; When the concentration of Zn2+is low, the film cannot be formed or the film is poor. With the increase of the concentration of Zn2+, the film weight increases; The content of PO4 has a great influence on the weight of phosphating film. Increasing the content of PO4 will increase the weight of phosphating film. 2. Alkaline electrolytic polishing process of aluminum The alkaline polishing solution system was studied, and the effects of corrosion inhibitor and viscosity agent on the polishing effect were compared. The alkaline solution system with good polishing effect was successfully obtained, and the additives that can reduce the operating temperature, prolong the service life of the solution and improve the polishing effect were obtained for the first time. The experimental results show that adding proper additives in NaOH solution can produce good polishing effect. The exploratory experiment also found that the reflectivity of aluminum surface could reach 90% after DC constant voltage electropolishing with NaOH solution of glucose under certain conditions. However, due to the unstable factors in the experiment, further research is needed. The feasibility of using DC pulse electropolishing method to polish aluminum under alkaline conditions is explored. The results show that the pulse electropolishing method can achieve the leveling effect of DC constant voltage electropolishing, but the leveling speed is slow. 3. Environmentally friendly chemical polishing of aluminum and aluminum alloy It is determined to develop a new environment-friendly chemical polishing technology with phosphoric acid sulfuric acid as the base liquid. This technology should achieve zero emission of NOx and overcome the quality defects of previous similar technologies. The key of the new technology is to add some compounds with special effects to the base solution to replace nitric acid. Therefore, it is necessary to analyze the tri acid chemical polishing process of aluminum, especially the role of nitric acid. The main role of nitric acid in aluminum chemical polishing is to inhibit spot corrosion and improve polishing brightness. Combined with the chemical polishing test in simple phosphoric acid sulfuric acid, it is considered that the special substances added in phosphoric acid sulfuric acid should be able to inhibit spot corrosion, slow down overall corrosion, and must have good leveling and brightening effects. 4. Electrochemical surface strengthening treatment of aluminum and its alloys The process, properties, morphology, composition and structure of ceramic like amorphous composite conversion film formed by anodic oxidation deposition of aluminum and its alloys in neutral system are discussed. The process research results show that in the neutral mixed system of Na2WO4, the concentration of film forming accelerator is 2.5-3.0g/l, the concentration of complexing film agent is 1.5-3.0g/l, the concentration of Na2WO4 is 0.5-0.8g/l, the peak current density is 6-12A/dm2, and the weak stirring can obtain a complete and uniform gray series inorganic non-metallic film with good luster. The film thickness is 5-10 μ m. The micro hardness is 300-540HV, and the corrosion resistance is excellent. The neutral system has good adaptability to aluminum alloy, and film can be formed on various series of aluminum alloys such as rust proof aluminum and forged aluminum. 5. Surface treatment technology of YL112 aluminum alloy YL112 aluminum alloy is widely used in the structural parts of automobiles and motorcycles. The material needs surface treatment before application to improve its corrosion resistance and form a surface layer that is easy to be combined with organic coating to facilitate subsequent surface treatment.

What cutter is used for processing stainless steel? As we all know, stainless steel is a difficult to machine material. It has a large tendency of work hardening, high temperature strength, and increased shear stress in the shear slip zone, which increases the total cutting resistance, thus increasing tool wear. Therefore, it is very important to select the appropriate stainless steel processing tool. Here, the quick screening small knitting will simply introduce the selection method and precautions for you. Reasonable selection of tool material is an important condition for high efficiency machining of stainless steel. According to the cutting characteristics of stainless steel, it is required that the tool material should have good heat resistance, high wear resistance and low affinity with stainless steel. At present, the commonly used tool materials are high-speed steel and hard alloy. 1、 Selection of High Speed Steel High speed steel is mainly used to manufacture complex multi cutting tools such as end mills, drills, taps, broaches, etc. The tool durability of ordinary high speed steel W18Cr4V is very low when it is used, which does not meet the requirements. A new type of high speed steel tool can achieve better results in cutting stainless steel. With the continuous development of NC tool manufacturing technology, for large quantities of workpieces, it will be better to use carbide multi edge and complex tools for cutting. 2、 Selection of cemented carbide YG cemented carbide has good toughness. It can use a larger rake angle, and the blade can also be sharpened to make the cutting light and fast. The chip is not easy to bond with the tool, so it is more suitable for processing stainless steel. This advantage of YG alloy is more important especially in rough turning and intermittent cutting of vibration. In addition, YG alloy has good thermal conductivity, with its thermal conductivity nearly twice as high as that of high-speed steel and twice as high as that of YT alloy. Therefore, YG alloys are widely used in stainless steel cutting, especially in the manufacture of rough turning tools, cutting tools, reamers and reamers. In addition to the selection of materials, attention should also be paid to the selection of tool angles. When machining stainless steel, the geometric shape of the cutting part of the tool should generally be considered from the front angle and back angle. When selecting the rake angle, factors such as the chip groove type, whether there is chamfer, and the positive and negative angle of the edge inclination should be considered. No matter what kind of cutter, large front angle must be used when processing stainless steel. Increasing the rake angle of the tool can reduce the resistance encountered during chip separation and removal. The selection of back angle is not very strict, but it should not be too small. If the back angle is too small, it will easily cause serious friction with the workpiece surface, which will deteriorate the roughness of the machined surface and accelerate tool wear. And because of the strong friction, the work hardening effect of the stainless steel surface is enhanced; The back angle of the tool should not be too large, which will reduce the wedge angle of the tool, reduce the strength of the cutting edge and accelerate the wear of the tool. Generally, the back angle should be larger than that when machining ordinary carbon steel.

Machining performance is not only related to the interests of enterprises, but also related to safety. While bringing economic benefits to enterprises, it can also effectively reduce the probability of safety accidents. Therefore, it is particularly important to avoid part deformation in the process of part processing. Operators need to consider various factors and take corresponding measures to prevent deformation during processing, so that finished parts can be used normally. In order to achieve this goal, it is necessary to analyze the causes of deformation in part processing and find out reliable measures for part deformation, so as to lay a solid foundation for the realization of the strategic objectives of modern enterprises. 1. Analyze the causes of deformation during machining of mechanical parts 1.1 The machining accuracy of parts is changed due to internal force In the process of lathe machining, it is usually to use the centripetal force to clamp the parts with the three jaw or four jaw chuck of the lathe, and then process the mechanical parts. At the same time, in order to ensure that the parts are not loose when subjected to force and reduce the role of internal force, it is necessary to make the clamping force greater than the cutting force of the machine. The clamping force increases with the increase of cutting force, and decreases with the decrease. Such operation can make the mechanical parts stable in the process of processing. However, after the three jaw chuck or four jaw chuck is loosened, the machined mechanical parts will be far different from the original ones, some of which are polygonal, and some are elliptical, with large deviations. 1.2 Deformation is easy to occur after heat treatment For mechanical parts of the thin type, due to their large length diameter, straw hats are prone to bend after heat treatment. On the one hand, there will be bulge in the middle, and the plane deviation will increase. On the other hand, due to various external factors, parts will be bent. These deformation problems are not only caused by changes in the internal stress of the parts after heat treatment, but also due to the lack of solid professional knowledge of the operators, who do not know much about the structural stability of the parts, thus increasing the probability of part deformation. 1.3 Elastic deformation caused by external force There are several main reasons for elastic deformation of parts in machining. First, if the internal structure of some parts contains flakes, there will be higher requirements for the operation method. Otherwise, when the operators locate and clamp the parts, they cannot correspond with the design of the drawings, which may easily lead to elastic deformation. Second, the unevenness of the lathe and fixture makes the force on both sides of the part uneven when fixing, resulting in the translation and deformation of the part on the side with less force during cutting. Third, the positioning of the parts in the processing process is unreasonable, which reduces the rigidity and strength of the parts. Fourthly, the existence of cutting force is also one of the causes of elastic deformation of parts. The elastic deformation caused by these different reasons shows the influence of external force on the machining quality of mechanical parts. 2 Improvement measures for machining deformation of mechanical parts In the actual part processing, there are many factors that cause part deformation. In order to fundamentally solve these deformation problems, operators need to seriously explore these factors in actual work and formulate improvement measures in combination with the essence of work. 2.1 Use special clamps to reduce clamping deformation In the process of machining mechanical parts, the requirements for refinement are very strict. For different parts, select different special tooling, which can prevent the parts from displacement during processing. In addition, before processing, the staff also need to make corresponding preparations, comprehensively check the fixed parts, and check whether the position of the mechanical parts is correct according to the drawings, so as to reduce the clamping deformation. 2.2 Finishing Parts are easy to deform after heat treatment, which requires measures to ensure the safety of parts. After the mechanical parts are processed and naturally deformed, professional tools shall be used for trimming. When finishing the processed parts, it is required to follow the industry standard requirements to ensure the quality of the parts and extend their service life. This method is most effective after part deformation. If the part is deformed after heat treatment, it can be tempered after quenching. Because there will be residual austenite in the part after quenching, these substances will be converted into martensite at room temperature, and then the object will expand. When processing parts, we should take every detail seriously, so that we can reduce the probability of part deformation, grasp the design concept on the drawings, make the products meet the standards according to the production requirements, improve economic efficiency and work efficiency, and ensure the quality of mechanical parts processing. 2.3 Improve blank quality In the specific operation process of various equipment, improving the quality of the rough embryo is the guarantee to prevent part deformation, so that the processed parts can meet the specific standard requirements of the parts and provide guarantee for the use of the parts in the later stage. Therefore, the operator needs to check the quality of different blanks and replace the defective blanks in time to avoid unnecessary problems. At the same time, the operator needs to select reliable blanks according to the specific requirements of the equipment to ensure that the quality and safety of the processed parts meet the standard requirements, thus extending the service life of the parts. 2.4 Increase part stiffness to prevent excessive deformation In the processing of mechanical parts, the safety performance of parts is affected by many objective factors. Especially after the heat treatment of the parts, due to the stress shrinkage phenomenon, the parts will be deformed. Therefore, in order to prevent the occurrence of deformation, technicians need to select appropriate heat limiting treatment methods to change the part stiffness. This requires the use of appropriate heat limiting treatment measures in combination with the performance of parts to ensure safety and reliability. Even after heat treatment, no obvious deformation will occur. 2.5 Measures to reduce clamping force When machining parts with poor rigidity, some measures should be taken to increase the rigidity of the parts, such as adding auxiliary supports. Attention should also be paid to the contact area between the clamping point and the parts. Different clamping methods should be selected according to the different parts. For example, when machining thin-walled sleeve parts, elastic shaft devices can be selected for clamping. Attention should be paid to the clamping position should be the position with strong rigidity. For mechanical parts of long shaft type, both ends can be positioned. For parts with very large length and diameter, both ends shall be clamped together, instead of "one end clamped and one end suspended". In addition, when machining cast iron parts, the design of the fixture should be based on the principle of increasing the rigidity of the cantilever part. A new type of hydraulic clamping tool can also be used to effectively prevent the quality problems caused by clamping deformation during the processing of parts. 2.6 Reducing cutting force In the process of cutting, attention should be paid to the cutting angle in close combination with the processing requirements in order to reduce the cutting force. The rake angle and main deflection angle of the tool can be increased as much as possible to make the blade sharp, and a reasonable tool is also crucial to the turning force in turning. For example, in turning thin-walled parts, if the rake angle is too large, the wedge angle of the tool will become larger, the wear speed will be accelerated, and the deformation and friction will also be reduced. The rake angle can be selected according to different tools. If the high speed cutter is selected, the best rake angle is 6 °~30 °; If cemented carbide tools are used, it is better to have a front angle of 5 °~20 °. 3 Conclusion There are many factors that cause the deformation of mechanical parts, and different measures should be taken to solve different causes. In actual operation, we should pay attention to every detail of mechanical processing, constantly improve the production process, and strive to minimize economic losses, so as to ensure the stable work of mechanical equipment, achieve the goal of high quality and efficiency of mechanical processing, and thus promote the mechanical processing industry to have a better development prospect and a broader market.