Machining method for spherical surface of swash plate assembly

Abstract

The invention belongs to the technical field of machining, and discloses a swash plate assembly spherical surface machining method which comprises the following steps that swash plate assemblies are pressed, and splicing gaps between the swash plate assemblies are subjected to wax sealing; grinding the swash plate spherical surface through a grinding wheel; the spherical surface of the swash plate is ground through a spherical grinding machine, grinding paste is used during grinding, and the grinding paste is cleaned after grinding; polishing the spherical surface of the swash plate by using grinding paste and a wool wheel, and then cleaning the grinding paste on the spherical surface of the swash plate; the polishing cloth is pasted on a spherical surface grinder, the polishing paste is evenly smeared on the polishing cloth, and the spherical surface of the swash plate is polished to be a mirror surface through the spherical surface grinder; and paraffin in the splicing gap of the swash plate assembly is removed. Through wax sealing and wax removal treatment, the problem that foreign matter enters gaps of the swash plate assembly in the machining process can be avoided, and the machining quality of the swash plate spherical surface is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for processing the spherical surface of a swash plate assembly. Background Art

[0002] The swash plate assembly is composed of a swash plate housing and a swash plate that are pressed together with a tight fit. After pressing, the swash plate assembly needs to be processed on the spherical surface. When processing the swash plate assembly, the two parts are pressed together and then mechanically processed, which is easy to produce burrs, grinding paste and other foreign matter entering the gap, seriously affecting the cleanliness of the parts. The existing processing methods are pressing, grinding the spherical surface, grinding the spherical surface, polishing the spherical surface, ultrasonic cleaning, cleaning, inspection and packaging. The existing processing methods have pits, tail marks, scratches, abrasions, cracks, rust, peeling and deep processing marks. There are fine metal foam, grinding paste, polishing paste and other foreign matter in the gap of the swash plate assembly that are difficult to clean. Therefore, the amount of scrapped parts is large, which seriously affects the quality of parts and product delivery. Among them, the grinding of the spherical surface is carried out on a CNC internal cylindrical grinder, the grinding of the spherical surface is carried out on a spherical grinding machine, and polishing is carried out on a grinding head after grinding. The roughness of the spherical surface after grinding is low, the spherical surface grinding knife marks are deep, and the grinding workload is large. After grinding, the spherical surface is polished on the grinding head. The surface of the spherical surface after polishing is dark and cannot achieve a mirror effect, or the gloss of the spherical surface after polishing is uneven, and dense pit defects are found under a microscope.

[0003] The Chinese patent publication number is CN117900913A, and the name is a patent application for a high-precision inner spherical surface processing method. The method includes: semi-finishing, finishing, rough grinding, semi-finishing, finishing and cleaning the inner spherical surface of the workpiece to be processed in sequence, and the rough grinding includes: wrapping absorbent cotton evenly on a grinding rod, and dipping the surface with grinding paste W40 to form a first grinding tool, using the first grinding tool to perform multi-angle grinding on the inner spherical surface after the finishing treatment, and the roughness of the inner spherical surface after the rough grinding treatment reaches Ra0.6-0.8; The semi-fine grinding includes: wrapping the absorbent cotton evenly on the grinding rod, and dipping the surface with abrasive paste W1.5 to form a second grinding tool, using the second grinding tool to grind the inner spherical surface after rough grinding at multiple angles, and the roughness of the inner spherical surface after semi-fine grinding can reach Ra0.4; the fine grinding includes: wrapping the absorbent cotton evenly on the grinding rod, and dipping the surface with abrasive paste W1.0 to form a third grinding tool, using the third grinding tool to grind the inner spherical surface after semi-fine grinding at multiple angles, and the roughness of the inner spherical surface after fine grinding can reach Ra0.2. Although this patent application can also process the inner spherical surface, there are still problems such as fine metal foam, grinding paste, polishing paste and other foreign objects in the gap that are difficult to clean, and the quality after processing and grinding is low. Summary of the invention

[0004] In order to overcome the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a method for processing the spherical surface of the swash plate assembly. Through wax sealing and wax removal treatment, the problem of foreign matter entering the gap of the swash plate assembly during processing can be avoided, and the processing quality of the swash plate spherical surface can be improved.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A method for machining a spherical surface of a swash plate assembly, wherein the swash plate assembly comprises a swash plate and a swash plate housing, wherein a joint gap exists between the swash plate housing and the swash plate, and the swash plate has a swash plate spherical surface. The method for machining the spherical surface of the swash plate assembly comprises the following steps: S1: Press the swash plate assemblies together and wax-seal the joint gaps between the swash plate assemblies; S2: Grinding the spherical surface of the inclined disk by a grinding wheel; S3: Grind the spherical surface of the inclined disk by a spherical grinding machine, use grinding paste during grinding, and wash off the grinding paste after grinding; S4: polish the spherical surface of the inclined disk with abrasive paste and a wool wheel, and then clean the abrasive paste on the spherical surface of the inclined disk; S5: stick the polishing cloth on the spherical grinder, apply the grinding paste evenly on the polishing cloth, and polish the spherical surface of the inclined disk to a mirror surface through the spherical grinder; S6: Remove the wax from the gap of the swash plate assembly.

[0006] Optionally, in step S1, after the swash plate assembly is pressed together, the entire swash plate assembly is immersed in liquid paraffin, the swash plate assembly is taken out, the air holes in the joint gap are filled, the entire swash plate assembly is immersed in liquid paraffin again, and the wax layer on the surface of the swash plate assembly that needs to be positioned and processed is removed.

[0007] Optionally, a plastic sheet is used to remove the wax layer from the surfaces of the swash plate assembly that need to be positioned and machined.

[0008] Optionally, in step S2, grinding is performed using a cup wheel generating method.

[0009] Optionally, in step S3, diamond polishing paste W14 is used, and in steps S4 and S5, diamond polishing paste W1.5 is used.

[0010] Optionally, in step S4, the spherical surface of the inclined disk is wiped with anhydrous ethanol.

[0011] Optionally, in step S5, after polishing is completed, the spherical surface of the inclined disk is inspected with a 20x stereo microscope, and the spherical surface of the inclined disk is wiped with 99% anhydrous ethanol.

[0012] Optionally, in step S6, kerosene is used to remove the paraffin in the joint gap.

[0013] Optionally, after steps S2, S3 and S4, a spherical gauge coloring method is used to detect the fit of the spherical surface of the inclined disk.

[0014] Optionally, after step S6, the swash plate assembly is cleaned and packaged.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By applying the processing method of the spherical surface of the swash plate assembly of the present invention, the spherical surface of the swash plate can finally be made into a mirror surface with a roughness of Ra0.03. When inspected under a 20x stereo microscope, there are no pits, tail marks, scratches, abrasions, cracks, rust, peeling and deep processing marks, which effectively improves the surface quality of the spherical surface and solves the problem of cleanliness of parts. The present invention solves the problem of cleanliness after pressing the two parts and the processing quality of the spherical surface, and improves the qualified rate of parts. 200 qualified swash plate assemblies were processed by the method of the present invention, and none of them was scrapped due to unqualified spherical surfaces of the swash plate assemblies.

[0016] Furthermore, the present invention can effectively prevent foreign matters such as fine metal foam, grinding paste, and polishing paste from entering the gap of the swash plate assembly through the wax sealing and wax removal steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are for explanation purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. In the drawings: Figure 1 It is a cross-sectional view of the swash plate assembly of the present invention; Figure 2 A top view of the swash plate assembly of the present invention; Figure 3 Schematic diagram of a grinding wheel according to Embodiment 1 of the present invention; Figure 4 Schematic diagram of a spherical gauge according to Embodiment 1 of the present invention; Among them, 1. swash plate; 2. swash plate housing; 3. joint gap; 4. shaft; 5. grinding wheel; 11. swash plate spherical surface; 12. swash plate hole wall; 21. housing outer wall; 22. housing hole wall; 61. fitting surface; 62. handle. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0020] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] When an element is referred to as being "disposed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a central element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiments. If the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but it can be slightly tilted.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In the description of the present invention, it is understood that the terms "include" and "comprise" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, the singular forms of "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0024] The present invention is described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, a method for machining a spherical surface of a swash plate assembly of the present invention, the swash plate assembly comprises a swash plate 1 and a swash plate housing 2, a joint gap 3 is provided between the swash plate housing 2 and the swash plate 1, the swash plate 1 has a swash plate spherical surface 11, and the method for machining the spherical surface of the swash plate assembly comprises the following steps: S1: Press the swash plate assemblies together and wax-seal the joint gap 3 between the swash plate assemblies; S2: Grinding the spherical surface 11 of the inclined disk by a grinding wheel; S3: grinding the inclined disk spherical surface 11 by a spherical grinding machine, using a grinding paste during grinding, and washing the grinding paste after grinding; S4: polishing the inclined disk spherical surface 11 with abrasive paste and a wool wheel, and then cleaning the abrasive paste on the inclined disk spherical surface 11; S5: stick the polishing cloth on the spherical grinder, evenly apply the grinding paste on the polishing cloth, and polish the spherical surface 11 of the inclined disk to a mirror surface by the spherical grinder; S6: Remove the paraffin in the joint gap 3 of the swash plate assembly.

[0026] The present invention provides a method for processing the spherical surface of a swash plate assembly, which can effectively prevent the entry of foreign matter such as fine metal foam, grinding paste, and polishing paste into the gap of the swash plate assembly through wax sealing and wax removal steps. Through the steps of grinding the spherical surface, grinding the spherical surface, rough polishing the spherical surface, and fine polishing the spherical surface, the cleanliness problem of the swash plate assembly after pressing can be solved, the processing quality of the swash plate spherical surface 11 can be improved, and the qualified rate of parts can be improved.

[0027] Example 1 The swash plate assembly of a certain type of plunger pump system is a precision core control component. The swash plate housing 2 and the swash plate 1 are pressed together by a tight fit and spherical surface processing is performed. After the two parts are pressed together, mechanical processing is prone to burrs, grinding paste and other foreign matter entering the gap, which seriously affects the cleanliness of the parts. The raw material of the swash plate 1 is W6Mo5Cr4V2, a high-speed tool steel with a hardness of HRC ≥ 60. The final design requires the spherical surface roughness Ra0.03, which should be a mirror surface, bright color, and clear imaging. The appearance of dark color and unclear imaging is not allowed; using a 20x stereo microscope inspection, pits, tail marks, scratches, abrasions, cracks, rust, peeling and deep processing marks are not allowed. The existing processing methods cannot meet the above requirements, so the amount of scrapped parts is large, which seriously affects the quality of parts and product delivery. The grinding of the spherical surface is carried out on a CNC internal cylindrical grinder, the grinding of the spherical surface is carried out on a spherical grinding machine, and polishing is carried out on the grinding head after grinding. The roughness of the spherical surface after grinding is low, the grinding knife lines of the spherical surface are deep, and the grinding workload is large. After grinding, the spherical surface is polished on the grinding head, and the surface of the spherical surface after polishing is dark and cannot achieve a mirror effect, or the gloss of the spherical surface after polishing is uneven. Under the microscope, there are dense pit defects, and there are fine metal foam, grinding paste, polishing paste and other foreign objects in the gap of the swash plate assembly that are difficult to clean.

[0028] The swash plate assembly comprises a swash plate 1 and a swash plate housing 2. The swash plate assembly 1 has an inner hole. The upper part of the inner hole of the swash plate housing 2 has a step. The bottom of the swash plate 1 has a step matching the step of the inner hole of the swash plate housing 2. There is a joint gap 3 between the step of the swash plate housing 2 and the step of the swash plate 1. Both ends of the swash plate housing 2 have shafts 4.

[0029] The outside of the swash plate housing 2 has a housing outer wall 21, the inner hole of the swash plate housing 2 has a housing hole wall 22, the swash plate 1 has an inner hole with the same diameter as the swash plate housing 2, the inner hole of the swash plate 1 has a swash plate hole wall 12, and the top of the swash plate 1 has a swash plate spherical surface 11.

[0030] 1) Wax seal: Because there is a gap after the swash plate assembly is pressed together, the swash plate assembly is wax-sealed to ensure the final cleanliness and prevent foreign objects such as burrs and grinding paste from entering the gap of the swash plate assembly.

[0031] Clean the swash plate assembly, visually inspect the surface of the swash plate assembly to ensure that there are no contaminants, and blow it dry with compressed air.

[0032] Use a water bath thermostat to heat the solid paraffin in the paraffin tank until it is completely melted and maintain the temperature at 80°C to 100°C.

[0033] Immerse the workpiece in liquid paraffin at 80°C to 100°C for 10 to 20 minutes.

[0034] Take out the soaked swash plate assembly and cool it naturally to 20℃ to 40℃.

[0035] Put the workpiece into the liquid paraffin at t=80℃ to 100℃ again. After the entire swash plate assembly is immersed, take out the workpiece immediately.

[0036] If there are pores within the circumference of the joint gap 3 between the swash plate assemblies, use a plastic pressing plate to press soft paraffin into the pores while it is still hot to fill the pores, immerse the swash plate assembly completely in liquid paraffin again, and take it out immediately.

[0037] The surface wax layer of the housing outer wall 21, the housing hole wall 22, the swash plate spherical surface 11 and the swash plate hole wall 12 of the swash plate assembly is removed using a plastic plate.

[0038] 2) Grinding ball surface The deformation of the single-piece spherical surface after heat treatment is more serious. Therefore, the machining allowance is too large when grinding the spherical surface, and the spherical surface contour is discontinuous. At the same time, because the temperature is too high during grinding and the heat dissipation of the grinding wheel itself is poor, it is easy to cause the grinding wheel pores to be blocked, resulting in burns and thermal deformation.

[0039] The present invention uses a spherical grinder and a cup wheel generating method to grind, aligning the center hole of the swash plate assembly before processing so that the runout during processing is no greater than 0.02 degrees. In this embodiment, the angle α between the axis of the grinding wheel 5 and the center hole of the swash plate assembly is 16 degrees.

[0040] like Figure 3 As shown, the inclined disk spherical surface 11 is ground by the grinding wheel 5, and the grinding wheel 5 is a 300-grit vitrified bond CBN grinding wheel.

[0041] First, rough grinding was performed with the grinding wheel linear speed of 35 m / s, workpiece rotation speed of 100 r / min, and feed speed of 0.05 mm / min.

[0042] Then perform semi-fine grinding, with the grinding wheel linear speed of 35m / s, workpiece rotation speed of 100r / min, and feed speed of 0.03mm / min.

[0043] Finally, fine grinding was performed with the grinding wheel linear speed of 35 m / s, workpiece rotation speed of 100 r / min, and feed speed of 0.01 mm / min.

[0044] Use Figure 4 The spherical gauge shown uses a spherical gauge coloring method to detect the fit of the inclined disk spherical surface 11, and the spherical gauge includes a handle 62 and a fitting surface 62 that are interconnected.

[0045] Apply the colorant evenly on the fitting surface 62 of the coloring gauge, and press the fitting surface 62 of the coloring gauge against the inclined disk spherical surface 11. Use the handle 62 to rotate within the range of 15° to 45°, back and forth at least 4 times, with the coloring area being not less than 80%. Perform uninterrupted inspection along the circumference of the inclined disk spherical surface 11, and conduct a complete inspection of all inspection objects.

[0046] The method of the present invention is used to process the surface of the swash plate assembly, which can eliminate micro surface cracks that are easily generated due to spherical surface stress concentration, reduce grinding marks (cross-net patterns), and reduce the workload of grinding processing.

[0047] 3) Grinding spherical surface: A spherical grinding machine was used, with a spindle speed of 880 r / min, a swing frequency of 380 times / min, a swing angle of 40°, and a grinding paste of W14; Clean the swash plate assembly immediately after grinding and visually check that there is no grinding paste on the surface of the swash plate assembly; The fit of the inclined disk spherical surface 11 is detected by the spherical gauge coloring method: the colorant is evenly applied to the fitting surface 62 of the coloring gauge, the fitting surface 62 of the coloring gauge is pressed against the inclined disk spherical surface 11, and rotated within the range of 15° to 45°, back and forth for no less than 4 times, the coloring area is no less than 80%, and the detection is carried out uninterruptedly along the circumference of the inclined disk spherical surface 11, and all the detection objects are completely inspected.

[0048] The invention ensures the roughness and contour of the spherical surface by selecting appropriate parameters on a spherical surface precision honing machine, thereby eliminating processing lines generated by grinding the spherical surface.

[0049] 4) Rough spherical surface: Before processing, adjust the machine frequency to 30Hz to 40Hz.

[0050] Polish the spherical surface with diamond grinding paste W1.5 and wool wheel. Clean the swash plate assembly immediately after polishing. Visually check that there is no grinding paste on the surface of the swash plate assembly.

[0051] After rough polishing, the spherical gauge coloring method is used to detect the fit of the inclined disk spherical surface 11. The colorant (prepared according to Prussian blue, titanium dioxide and castor oil 1:1:1) is evenly applied to the fitting surface 62 of the spherical gauge, and the fitting surface 62 of the spherical gauge is tightly attached to the inclined disk spherical surface 11, and rotated within the range of 15°~45°, back and forth for no less than 4 times, and the coloring area is not less than 80%. Uninterrupted detection is carried out along the circumference of the inclined disk spherical surface 11, and all detection objects are completely inspected.

[0052] Visually inspect the spherical surface to ensure that there is no scratch and metallic luster. After completion, wipe the spherical surface of the inclined disk 11 with anhydrous ethanol.

[0053] The present invention smoothes the surface depth of the swash plate assembly by rough polishing the spherical surface, removes tiny abrasive particles remaining on the surface of the swash plate assembly, makes the surface microscopic concave and convex surface tend to be smooth, and further improves the roughness and contour of the swash plate assembly.

[0054] 5) Fine polishing of the spherical surface: A special spherical grinding machine is used, with a spindle speed of 880r / min, a swing frequency of 380 times / min, and a swing angle of 40°.

[0055] Stick the velvet polishing cloth on the spherical grinder, and do not allow any unevenness such as folding and warping.

[0056] Apply diamond paste W1.5 evenly on the polishing cloth.

[0057] Before polishing, evenly apply diamond grinding paste W1.5 on the inclined disk spherical surface 11, rotate the inclined disk spherical surface 11 on the spherical grinder for two to three circles, evenly apply the diamond grinding paste W1.5 and then polish.

[0058] The polishing time is not less than 15 minutes, and the inclined disk spherical surface 11 must be polished to a mirror surface.

[0059] Clean the swash plate assembly immediately after polishing and visually check that there is no grinding paste on the swash plate spherical surface 11.

[0060] The inclined disk spherical surface 11 is inspected with a 20x stereo microscope. No pits, tail marks, scratches, abrasions, cracks, rust, peeling or deep processing marks are allowed to exist.

[0061] After the inspection is completed, wipe the swash plate spherical surface 11 with 99% anhydrous ethanol to prevent rust caused by wiping with water.

[0062] The invention performs fine polishing on the surface of the inclined plate assembly on a spherical precision honing machine, thereby achieving the requirement of a spherical mirror surface.

[0063] 6) Wax removal: Place the swash plate assembly with the spherical surface 11 facing downward into a kerosene tank at a temperature of 60°C to 70°C for no less than 45 minutes until the paraffin is completely discharged from the cavity and gap of the assembly.

[0064] The present invention can remove the paraffin in the cavity and gap of the swash plate assembly through the wax removal step, thereby ensuring the cleanliness of the swash plate assembly.

[0065] Example 2 On the basis of Example 1, after completing the wax sealing, grinding, lapping, rough polishing, fine polishing and wax removal of the swash plate assembly, the swash plate assembly is ultrasonically cleaned.

[0066] Then clean the swash plate assembly: immerse the swash plate assembly in the cleaning agent, scrub it with a brush, and visually check that there is no foreign matter on the surface of the swash plate assembly; blow it dry with pure compressed air after cleaning, and wipe the swash plate assembly clean with a clean silk cloth. After cleaning, wipe the spherical surface with anhydrous ethanol.

[0067] The swash plate assembly is inspected again, and the swash plate spherical surface 11 is checked with a 20x stereo microscope. No pits, tail marks, scratches, abrasions, cracks, rust, peeling and deep processing marks are allowed.

[0068] After the inspection is completed, the swash plate assembly is packaged.

[0069] Unless otherwise specified, the device elements involved in the above embodiments are all conventional device elements, and the structural settings, working modes or control modes involved are all conventional settings, working modes or control modes in the art unless otherwise specified.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A method for machining a spherical surface of a swash plate assembly, characterized in that: The swash plate assembly comprises a swash plate (1) and a swash plate housing (2), a splicing gap (3) exists between the swash plate housing (2) and the swash plate (1), the swash plate (1) has a swash plate spherical surface (11), and a method for machining the swash plate assembly spherical surface comprises the following steps: S1: Press the swash plate assemblies together and wax-seal the joint gaps (3) between the swash plate assemblies; S2: Grinding the spherical surface of the inclined disk (11) by a grinding wheel; S3: grinding the spherical surface (11) of the inclined disk by a spherical grinding machine, using a grinding paste during grinding, and washing off the grinding paste after grinding; S4: polishing the inclined disk spherical surface (11) with abrasive paste and a wool wheel, and then cleaning the abrasive paste on the inclined disk spherical surface (11); S5: stick the polishing cloth on the spherical grinder, evenly apply the polishing paste on the polishing cloth, and polish the spherical surface (11) of the inclined disk to a mirror surface by the spherical grinder; S6: Remove the wax from the gap (3) between the swash plate assembly and the swash plate assembly.

2. A method for machining a spherical surface of a swash plate assembly according to claim 1, characterized in that: In step S1, after the swash plate assembly is pressed together, the entire swash plate assembly is immersed in liquid paraffin, and then the swash plate assembly is taken out to fill the air holes in the joint gap (3), and the entire swash plate assembly is immersed in liquid paraffin again, and then the wax layer on the surface of the swash plate assembly that needs to be positioned and processed is removed.

3. A method for machining a spherical surface of a swash plate assembly according to claim 2, characterized in that: Plastic plates are used to remove the wax layer on the surfaces of the swash plate assembly that require positioning and machining.

4. A method for machining a spherical surface of a swash plate assembly according to claim 1, characterized in that: In step S2, grinding is performed using a cup wheel generating method.

5. The method for machining the spherical surface of a swash plate assembly according to claim 1, characterized in that: In step S3, diamond polishing paste W14 is used, and in steps S4 and S5, diamond polishing paste W1.5 is used.

6. A method for machining a spherical surface of a swash plate assembly according to claim 1, characterized in that: In step S4, the spherical surface (11) of the inclined disk is wiped with anhydrous ethanol.

7. A method for machining a spherical surface of a swash plate assembly according to claim 1, characterized in that: In step S5, after polishing is completed, the inclined disk spherical surface (11) is inspected with a 20x stereo microscope, and the inclined disk spherical surface (11) is wiped with 99% anhydrous ethanol.

8. The method for machining the spherical surface of a swash plate assembly according to claim 1, characterized in that: In step S6, kerosene is used to remove the paraffin in the joint gap (3).

9. The method for machining the spherical surface of a swash plate assembly according to claim 1, characterized in that: After steps S2, S3 and S4, the spherical gauge coloring method is used to detect the fit of the inclined disk spherical surface (11).

10. A method for machining a spherical surface of a swash plate assembly according to claim 1, characterized in that: After step S6, the swash plate assembly is cleaned and packaged.

Images