Technological method for machining air floatation type parts

Abstract

The invention relates to the technical field of part machining, and particularly discloses a technological method for machining air-floating parts, which comprises the following steps of: 1, selecting a stainless steel plate; secondly, the machined part is subjected to thermal refining, and internal stress of the machined part is removed; thirdly, the appearance and an inner cavity of the machined part are subjected to rough milling, and allowance is reserved; fourthly, the machined part is heated and subjected to heat preservation, and the machined part is slowly cooled to the room temperature; fifthly, the appearance and an inner cavity of the machined part are subjected to semi-finish milling, and allowance is reserved; sixthly, the machined part is subjected to low-temperature aging heating and heat preservation, and the machined part is slowly cooled to the room temperature; according to the air floating part machining method designed by the invention, a proper process route, a tool, a heat treatment process and special machining parameters are formulated according to material characteristics and machining difficulties, the machining difficulty of the air floating part is solved, and the method is greatly helpful for improving the precision of the part, so that the machining precision of the machined part is effectively ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of parts processing, and in particular relates to a process method for processing air-floating parts. Background Art

[0002] Air-floating parts processing is a field involving high precision and complex technology. Such parts are usually used in applications that require high precision, high stability and low friction. Air-floating parts refer to parts that use gas pressure difference to achieve suspension, positioning and movement. Such parts are usually used in high-speed rotation, high-precision positioning, low friction and low wear occasions, such as precision machine tools, semiconductor production equipment, optical instruments, etc.

[0003] The machining accuracy requirements for air-floating parts are extremely high, usually reaching the micron level or even the nanometer level. This requires the machining equipment to have extremely high precision and stability, and at the same time, it is necessary to adopt advanced machining technology and processes; air-floating parts need to achieve low-friction movement during operation, so their surface quality and roughness requirements are extremely high. During the machining process, the cutting parameters and process conditions need to be strictly controlled to ensure that the surface of the parts reaches the required roughness and finish; air-floating parts need to maintain a stable position and motion state during operation, so the deformation and error need to be strictly controlled during the machining process. This requires the machining equipment to have sufficient rigidity and precision, and at the same time, it is necessary to adopt reasonable process methods and fixtures to ensure the stability of the parts.

[0004] Air-floating parts are mainly used in high-precision machine tools and high-precision devices, such as three-dimensional detection devices, air-floating bearings, etc. Air-floating parts have high requirements on materials and require materials with strong stability (such parts use 4Cr13). The material characteristics are high heat resistance, strong corrosion resistance, strong oxidation resistance, and strong corrosion resistance. In order to process and shape the air-floating parts and pores, eliminate the internal stress of the material, and ensure the various form and position tolerances, it has always been a difficult problem in the industry.

[0005] The invention solves the processing problem of air-floating parts by designing a profiling tool and performing targeted processing on air holes, which is of great help in improving the precision of parts. Summary of the invention

[0006] The purpose of the present invention is to provide a process method for processing air-floating parts to eliminate the internal stress of the material and ensure the problem of various shape and position tolerances.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The process method of processing air-floating parts includes processing boxes, processing tools and processing parts, and also includes:

[0009] Step 1: Select stainless steel plate;

[0010] Step 2: Perform quenching and tempering treatment on the processed parts to remove the internal stress of the processed parts;

[0011] Step 3: Rough milling of the outer shape and inner cavity of the machined parts, leaving a margin;

[0012] Step 4: Heat and keep the processed parts warm, and then slowly cool them to room temperature;

[0013] Step 5: Semi-finish milling of the outer shape and inner cavity of the machined parts, leaving a margin;

[0014] Step 6: Perform low-temperature aging heating and heat preservation on the processed parts, and slowly cool them to room temperature;

[0015] Step 7: Except for the air-floating parts and pores of the machined parts, all other parts are machined and formed;

[0016] Step 8: Make a process boss on the bottom surface of the machined part to reduce the deformation of the machined part after fine grinding;

[0017] Step 9: Fine grinding of the process boss and shape and position tolerance of the size side wall;

[0018] Step 10: Use CNC machine tools to make processing fixtures, place the parts to be processed inside the processing fixtures, and then process the parts. Glue AB glue to the outer shape, process the air-floating part, first process the bottom ring groove part, then turn over and process the countersunk part, and use high-speed machine tools to set specific parameters for processing, and process the Φ0.29mm air hole on the side wall of the 15-size.

[0019] As can be seen from the above, the purpose of step 2 is to remove the internal stress and defects generated when the parts are manufactured;

[0020] The purpose of step three is to roughly mill the parts to release the internal stress of the parts, prevent the parts from deformation, and prepare for stabilizing the shape, position and size of the parts;

[0021] It should be noted that tempering the machined parts to remove their internal stress can have the following benefits:

[0022] Quenching and tempering refers to a double heat treatment method of quenching followed by high-temperature tempering. It can enable the processed parts to obtain good comprehensive mechanical properties. Through quenching, a hard and brittle martensite structure is formed inside the processed parts, which enhances the hardness and strength; and the subsequent high-temperature tempering reduces the internal stress generated by quenching and improves the toughness and plasticity of the material. This treatment enables the processed parts to have higher toughness and plasticity while maintaining a certain hardness and strength, thereby improving its comprehensive mechanical properties;

[0023] The existence of internal stress may cause deformation or cracking of the processed parts during processing or use. Removing internal stress through quenching and tempering can stabilize the size and shape of the processed parts and reduce the risk of deformation and cracking caused by stress release. This is especially important for processed parts that require high precision and stability.

[0024] Internal stress is one of the main reasons for fatigue fracture and premature failure of machined parts during use. Removing internal stress through tempering treatment can reduce the risk of fatigue fracture caused by stress concentration during use of machined parts, thereby improving their service life and reliability. This is especially important for machined parts that need to withstand heavy loads and complex working conditions for a long time.

[0025] The fourth step is to perform aging treatment to stabilize the shape of the parts and release the material stress. Note that it must be cooled slowly to room temperature and cannot be cooled by water or oil.

[0026] It should be noted that rough milling of the outer shape and inner cavity of the machined parts has the following benefits:

[0027] The main features of rough milling are large cutting depth and fast cutting speed. Compared with ordinary milling, rough milling can remove a large amount of material faster, thereby significantly improving processing efficiency. This is especially important for occasions where the initial shape and size of the machined parts need to be quickly achieved, which can shorten the production cycle and reduce production costs.

[0028] Rough milling can initially shape the shape and inner cavity of the machined parts into a rough shape and size, laying the foundation for subsequent finishing and semi-finishing processes. Through rough milling, the uneven parts and excess materials on the surface of the machined parts can be removed, making subsequent processing smoother and reducing processing errors and scrap rates.

[0029] During the machining process of parts, due to the effect of cutting force, certain residual stress will be generated inside the parts. These residual stresses may cause deformation or cracking of the parts during use. Rough milling can effectively release these residual stresses and improve the stability and reliability of the parts.

[0030] Rough milling can adjust cutting parameters more flexibly to meet the processing requirements of parts of different shapes and sizes, which helps to optimize material utilization and reduce material waste. At the same time, rough milling can also reduce the impact of heat and chips generated during the cutting process on processing equipment and the environment.

[0031] The purpose of step five is to process the parts again, remove a small amount of excess, and then prepare for aging again;

[0032] It should be noted that heating and keeping the processed parts warm has the following benefits:

[0033] During the heating process, thermal stress will be generated inside the processed parts, which may cause deformation or cracking of the processed parts. Through thermal insulation measures, the heating speed can be effectively slowed down, making the temperature distribution inside the processed parts more uniform, thereby reducing the generation of thermal stress. At the same time, thermal insulation can also prevent the deformation of the processed parts caused by rapid temperature changes, ensuring the dimensional accuracy and shape stability of the processed parts.

[0034] Insulation can reduce defects and deformations during processing, thereby improving processing quality. In addition, insulation can also reduce energy loss and improve energy utilization. During processing, about 50% of the energy will be lost through the surface of the processed parts, and insulation measures can effectively reduce this energy loss, thereby reducing production costs and improving production efficiency.

[0035] Heating equipment and tools are easily damaged in high temperature environments, especially when working continuously for a long time. Insulation measures can reduce the temperature fluctuation range of equipment and tools, reduce the number of thermal shocks, and thus extend their service life. This not only helps to reduce equipment maintenance costs, but also improves the stability and reliability of the production line;

[0036] For some metal materials, heating and heat preservation can change their organizational structure and performance. For example, through proper heating and heat preservation treatment, the grain of metal materials can be refined, the hardness can be improved, and the toughness can be enhanced. The optimization of these properties helps to improve the service life and safety of processed parts.

[0037] Insulation measures can reduce energy consumption and reduce production costs. In industrial production, saving energy and reducing costs are the goals that companies are constantly pursuing. Through heating and insulation treatment, energy waste can be effectively reduced and energy utilization efficiency can be improved, thereby achieving the goal of reducing production costs.

[0038] The sixth step is to carry out re-aging to prepare for the final guarantee of the part shape. At low temperatures, attention should be paid to the change in the color of the part shape to ensure the part shape, the drawing positioning tolerance, the air floating part and the processing of the pores;

[0039] It should be noted that semi-finishing the outer shape and inner cavity of the machined parts has the following benefits:

[0040] Semi-finishing milling technology can achieve higher processing accuracy and meet the product's requirements for size, shape and position accuracy. Compared with rough milling, semi-finishing milling can further remove excess material, making the shape and inner cavity size of the part closer to the final design requirements, laying a solid foundation for subsequent finishing.

[0041] Semi-finishing milling can improve the roughness of the part surface and make the surface smoother, which helps to reduce friction and wear in subsequent processing and increase the service life of the parts. At the same time, good surface quality can also improve the corrosion resistance and aesthetics of the parts.

[0042] Using advanced CNC equipment and tool technology, semi-finishing milling technology can achieve a fast and efficient processing process. Compared with fine milling, the cutting depth and cutting speed of semi-finishing milling are moderate, which can improve production efficiency while ensuring processing quality, which helps to shorten the production cycle and reduce production costs;

[0043] Semi-finishing milling is an important step before finishing. Through semi-finishing milling, the larger cutting marks and uneven parts left in the rough milling process can be removed, making the surface of the part more uniform and consistent, which helps the smooth operation of the tool and the optimization of the cutting effect during the finishing process, thereby further improving the processing accuracy and surface quality;

[0044] During the semi-finishing milling process, the friction and cutting action between the tool and the part surface will generate certain machining stress. However, compared with rough milling, the cutting depth and cutting speed of semi-finishing milling are smaller, so the machining stress generated is also relatively low. By reasonably selecting the semi-finishing milling parameters, the machining stress can be further reduced, reducing the risk of deformation and cracking of parts due to stress concentration.

[0045] Step seven is to process everything except the tolerance, air-floating parts and air holes into the drawing size;

[0046] The purpose of step eight is: since the contact surface of the final bottom surface of the part is small, the large surface is reserved for this step to facilitate the previous processing; this processing is to prevent the removal of excess from affecting the processing accuracy, so a process boss is made to remove most of the excess to prevent the deformation of the part from affecting the final accuracy;

[0047] The purpose of step nine is that the accuracy of grinding by the grinder is better than that of milling, and the deformation is also small, which can provide the best processing benchmark for fine milling;

[0048] Step ten is the key to processing. First, a square jig must be made, that is, a jig is made according to the shape of the part. Any part that affects clamping should be avoided. Then the part is fixed by gluing AB glue. Note that the bottom ring groove of the air-floating part should be processed first, and then the countersunk hole of the air-floating part should be processed to ensure the size of the air-floating connection. Finally, a high-speed CNC machine tool is used to install a special tool rod and set special parameters to process the Φ0.29mm air hole.

[0049] The present invention further specifically describes that the model of the stainless steel plate is 4Cr13 steel, the rough milling allowance of the processed parts is 2 mm, the heating temperature is 100°C-150°C, the insulation time is 8 hours-12 hours, the semi-finishing milling allowance of the processed parts is 0.5 mm, the low-temperature aging heating temperature of the processed parts is 100°C, the insulation time is 4 hours-8 hours, the fine grinding size of the process boss is 0.2 mm, and the dimensional side wall form and position tolerance is 15 mm.

[0050] The present invention further specifically describes that the outer wall of the processed part is adhered with AB glue, the processing order of the processed part is to first process the bottom ring groove part, and then turn over to process the countersunk hole part, and the pore size at the processed side wall of the processed part is 0.29mm.

[0051] In summary, the method for processing air-floating parts designed in the present invention formulates suitable process routes, tooling, heat treatment processes and special processing parameters according to material properties and processing difficulties, which solves the processing difficulties of air-floating parts and is of great help in improving the precision of parts, thereby effectively ensuring the processing accuracy of the processed parts.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] The method for processing air-floating parts designed in the present invention formulates suitable process routes, tooling, heat treatment processes and special processing parameters according to material characteristics and processing difficulties, solves the processing difficulties of air-floating parts, is of great help in improving the precision of parts, and thus effectively ensures the processing precision of the processed parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a structural diagram of the present invention;

[0055] Figure 2 This is a structural diagram of the parts processed by the present invention.

[0056] In the figure: 1. Processing square box; 2. Processing tooling; 3. Processing parts. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] like Figure 1 , Figure 2As shown, the process method for processing air-floating parts includes a processing box 1, a processing tool 2 and a processing part 3, and also includes:

[0059] Step 1: Select stainless steel plate;

[0060] Step 2: Performing quenching and tempering treatment on the processed part 3 to remove the internal stress of the processed part;

[0061] Step 3: Rough milling of the outer shape and inner cavity of the processed part 3, leaving a margin;

[0062] Step 4: Heat and keep the processed part 3 warm, and slowly cool it to room temperature;

[0063] Step 5: semi-finish milling the outer shape and inner cavity of the processed part 3, and leave a margin;

[0064] Step 6: Perform low-temperature aging heating and heat preservation on the processed part 3, and slowly cool it to room temperature;

[0065] Step 7: Except for the air-floating part and the air hole of the processing part 3, all other parts are processed and formed;

[0066] Step 8: Process the bottom surface of the part 3 to make a process boss to reduce the deformation of the part 3 after fine grinding;

[0067] Step 9: Fine grinding of the process boss and shape and position tolerance of the size side wall;

[0068] Step 10: Use the CNC machine tool to make the processing fixture 2, and put the processing part 3 into the processing fixture 2, and then process the processing part 3. Glue AB glue on the outer shape, process the air-floating part, first process the bottom ring groove part, then turn over and process the countersink part, and use a high-speed machine tool to set specific parameters for processing, and process the Φ0.29mm air hole on the side wall of the 15-size.

[0069] As can be seen from the above, the purpose of step 2 is to remove the internal stress and defects generated when the parts are manufactured;

[0070] The purpose of step three is to roughly mill the parts to release the internal stress of the parts, prevent the parts from deformation, and prepare for stabilizing the shape, position and size of the parts;

[0071] It should be noted that: tempering the machined part 3 to remove its internal stress can have the following benefits:

[0072] The quenching and tempering treatment refers to a double heat treatment method of quenching followed by high-temperature tempering, which can enable the processed part 3 to obtain good comprehensive mechanical properties. Through quenching, a hard and brittle martensite structure is formed inside the processed part 3, which enhances the hardness and strength; and the subsequent high-temperature tempering reduces the internal stress generated by quenching and improves the toughness and plasticity of the material. This treatment enables the processed part 3 to have higher toughness and plasticity while maintaining a certain hardness and strength, thereby improving its comprehensive mechanical properties;

[0073] The existence of internal stress may cause deformation or cracking of the processed part 3 during processing or use. Removing internal stress through quenching and tempering can stabilize the size and shape of the processed part 3 and reduce the risk of deformation and cracking caused by stress release. This is especially important for the processed part 3 that requires high precision and stability.

[0074] Internal stress is one of the main reasons for fatigue fracture and premature failure of the processed part 3 during use. Removing internal stress through tempering treatment can reduce the risk of fatigue fracture caused by stress concentration during use of the processed part 3, thereby improving its service life and reliability. This is especially important for the processed part 3 that needs to withstand heavy loads and complex working conditions for a long time.

[0075] The fourth step is to perform aging treatment to stabilize the shape of the parts and release the material stress. Note that it must be cooled slowly to room temperature and cannot be cooled by water or oil.

[0076] It should be noted that rough milling of the outer shape and inner cavity of the processed part 3 has the following advantages:

[0077] The main features of rough milling are large cutting depth and fast cutting speed. Compared with ordinary milling, rough milling can remove a large amount of material faster, thereby significantly improving processing efficiency. This is especially important for occasions where the initial shape and size of the machined parts need to be quickly achieved, which can shorten the production cycle and reduce production costs.

[0078] Rough milling can preliminarily shape the outer shape and inner cavity of the processed part 3 into a rough shape and size, laying the foundation for subsequent finishing, semi-finishing and other processes. Through rough milling, the uneven parts and excess materials on the surface of the processed part 3 can be removed, making the subsequent processing smoother and reducing processing errors and scrap rates;

[0079] During the machining process of the machined part 3, due to the effect of the cutting force, certain residual stresses will be generated inside the machined part 3. These residual stresses may cause the machined part 3 to deform or crack during use. Through rough milling, these residual stresses can be effectively released, thereby improving the stability and reliability of the machined part 3.

[0080] Rough milling can adjust cutting parameters more flexibly to meet the processing requirements of parts with different shapes and sizes, which helps to optimize material utilization and reduce material waste. At the same time, rough milling can also reduce the impact of heat and chips generated during the cutting process on processing equipment and the environment.

[0081] The purpose of step five is to process the parts again, remove a small amount of excess, and then prepare for aging again;

[0082] It should be noted that heating and keeping the processed part 3 warm has the following benefits:

[0083] During the heating process, thermal stress will be generated inside the processed part 3, which may cause the processed part 3 to deform or crack. Through heat preservation measures, the heating speed can be effectively slowed down, making the temperature distribution inside the processed part 3 more uniform, thereby reducing the generation of thermal stress. At the same time, heat preservation can also prevent the deformation of the processed part 3 caused by rapid temperature changes, thereby ensuring the dimensional accuracy and shape stability of the processed part 3.

[0084] Insulation can reduce defects and deformations during processing, thereby improving processing quality. In addition, insulation can also reduce energy loss and improve energy utilization. During processing, about 50% of the energy will be lost through the surface of the processed parts 3, and insulation measures can effectively reduce this energy loss, thereby reducing production costs and improving production efficiency;

[0085] Heating equipment and tools are easily damaged in high temperature environments, especially when working continuously for a long time. Insulation measures can reduce the temperature fluctuation range of equipment and tools, reduce the number of thermal shocks, and thus extend their service life. This not only helps to reduce equipment maintenance costs, but also improves the stability and reliability of the production line;

[0086] For some metal materials, heating and heat preservation can change their organizational structure and performance. For example, through appropriate heating and heat preservation treatment, the grain of the metal material can be refined, the hardness can be improved, and the toughness can be enhanced. The optimization of these properties helps to improve the service life and safety of the processed parts 3;

[0087] Insulation measures can reduce energy consumption and reduce production costs. In industrial production, saving energy and reducing costs are the goals that companies are constantly pursuing. Through heating and insulation treatment, energy waste can be effectively reduced and energy utilization efficiency can be improved, thereby achieving the goal of reducing production costs.

[0088] The sixth step is to carry out re-aging to prepare for the final guarantee of the part shape. At low temperatures, attention should be paid to the change in the color of the part shape to ensure the part shape, the drawing positioning tolerance, the air floating part and the processing of the pores;

[0089] It should be noted that semi-finishing the outer shape and inner cavity of the processed part 3 has the following advantages:

[0090] Semi-finishing milling technology can achieve higher processing accuracy and meet the product's requirements for size, shape and position accuracy. Compared with rough milling, semi-finishing milling can further remove excess material, making the shape and inner cavity size of the part closer to the final design requirements, laying a solid foundation for subsequent finishing.

[0091] Semi-finishing milling can improve the roughness of the part surface and make the surface smoother, which helps to reduce friction and wear in subsequent processing and increase the service life of the parts. At the same time, good surface quality can also improve the corrosion resistance and aesthetics of the parts.

[0092] Using advanced CNC equipment and tool technology, semi-finishing milling technology can achieve a fast and efficient processing process. Compared with fine milling, the cutting depth and cutting speed of semi-finishing milling are moderate, which can improve production efficiency while ensuring processing quality, which helps to shorten the production cycle and reduce production costs;

[0093] Semi-finishing milling is an important step before finishing. Through semi-finishing milling, the larger cutting marks and uneven parts left in the rough milling process can be removed, making the surface of the part more uniform and consistent, which helps the smooth operation of the tool and the optimization of the cutting effect during the finishing process, thereby further improving the processing accuracy and surface quality;

[0094] During the semi-finishing milling process, the friction and cutting action between the tool and the part surface will generate certain machining stress. However, compared with rough milling, the cutting depth and cutting speed of semi-finishing milling are smaller, so the machining stress generated is also relatively low. By reasonably selecting the semi-finishing milling parameters, the machining stress can be further reduced, reducing the risk of deformation and cracking of parts due to stress concentration.

[0095] Step seven is to process everything except the tolerance, air-floating parts and air holes into the drawing size;

[0096] The purpose of step eight is: since the contact surface of the final bottom surface of the part is small, the large surface is reserved for this step to facilitate the previous processing; this processing is to prevent the removal of excess from affecting the processing accuracy, so a process boss is made to remove most of the excess to prevent the deformation of the part from affecting the final accuracy;

[0097] The purpose of step nine is that the accuracy of grinding by the grinder is better than that of milling, and the deformation is also small, which can provide the best processing benchmark for fine milling;

[0098] Step ten is the key to processing. First, a square jig must be made, that is, a jig is made according to the shape of the part. Any part that affects clamping should be avoided. Then the part is fixed by gluing AB glue. Note that the bottom ring groove of the air-floating part should be processed first, and then the countersunk hole of the air-floating part should be processed to ensure the size of the air-floating connection. Finally, a high-speed CNC machine tool is used to install a special tool rod and set special parameters to process the Φ0.29mm air hole.

[0099] The present invention further specifically describes that the model of the stainless steel plate is 4Cr13 steel, the rough milling allowance of the processed part 3 is 2 mm, the heating temperature is 100°C-150°C, the insulation time is 8 hours-12 hours, the semi-finishing milling allowance of the processed part 3 is 0.5 mm, the low-temperature aging heating temperature of the processed part 3 is 100°C, the insulation time is 4 hours-8 hours, the fine grinding size of the process boss is 0.2 mm, and the dimensional side wall form and position tolerance is 15 mm.

[0100] The present invention further specifically describes that the outer wall of the processed part 3 is adhered with AB glue, and the processing order of the processed part 3 is to first process the bottom ring groove part, and then turn over to process the countersunk hole part. The pore size of the processed side wall of the processed part 3 is 0.29mm.

[0101] In summary, the method for processing air-floating parts designed in the present invention formulates suitable process routes, tooling, heat treatment processes and special processing parameters according to material properties and processing difficulties, which solves the processing difficulties of air-floating parts and is of great help in improving the precision of parts, thereby effectively ensuring the processing accuracy of the processed parts.

[0102] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The process for processing air-floating parts is characterized by: The invention comprises a processing box 1, a processing tool 2 and a processing part (3), and also comprises: Step 1: Select stainless steel plate; Step 2: Performing quenching and tempering treatment on the processed parts (3) to remove the internal stress of the processed parts; Step 3: Rough milling the outer shape and inner cavity of the processed part (3) and leaving an allowance; Step 4: heating and keeping the processed part (3) warm, and then slowly cooling it to room temperature; Step 5: semi-finishing the outer shape and inner cavity of the processed part (3) and leaving a margin; Step 6: Perform low-temperature aging heating and heat preservation on the processed part (3), and then slowly cool it to room temperature; Step 7: Except for the air-floating part and the air hole of the processed part (3), all other parts are processed into shape; Step 8: The bottom surface of the processed part (3) is made into a process boss to reduce the deformation of the processed part (3) after fine grinding; Step 9: Fine grinding of the process boss and shape and position tolerance of the size side wall; Step 10: Use a CNC machine tool to make a processing fixture 2, and place the processing part (3) inside the processing fixture 2, and then process the processing part (3). Glue AB glue to the outer shape, process the air-floating part, first process the bottom ring groove part, then turn over and process the countersunk part, and use a high-speed machine tool to set specific parameters for processing, and process the Φ0.29mm air hole on the side wall of the 15-size.

2. The process for processing air-floating parts according to claim 1, characterized in that: The model of the stainless steel plate is 4Cr13 steel.

3. The process for processing air-floating parts according to claim 1 is characterized in that: The rough milling allowance of the processed part (3) is 2 mm.

4. The process for processing air-floating parts according to claim 1, characterized in that: The heating temperature is 100° C.-150° C., and the insulation time is 8 hours-12 hours.

5. The process for processing air-floating parts according to claim 1 is characterized in that: The allowance for semi-finishing milling of the machined part (3) is 0.5 mm.

6. The process for processing air-floating parts according to claim 1, characterized in that: The low-temperature aging heating temperature of the processed parts (3) is 100° C., and the insulation time is 4 hours to 8 hours.

7. The process for processing air-floating parts according to claim 1 is characterized in that: The outer wall of the processed part (3) is adhered with AB glue.

8. The process for processing air-floating parts according to claim 1 is characterized in that: The fine grinding size of the process boss is 0.2mm, and the shape and position tolerance of the side wall is 15mm.

9. The process for processing air-floating parts according to claim 1, characterized in that: The processing sequence of the processing part (3) is to first process the bottom surface annular groove part, and then turn over to process the countersunk hole part.

10. The process for processing air-floating parts according to claim 1, characterized in that: The size of the pores at the processed side wall of the processed part (3) is 0.29 mm.

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