A method of manufacturing a compressor rocker

Abstract

The application provides a manufacturing method of a compressor rocker, the compressor rocker has sliding surfaces for being arranged on two sides of a compressor sliding plate, and the compressor rocker has a hinge surface on a side away from the sliding surfaces, the hinge surface is used for being hinged with a compressor cylinder wall, and end portions of the compressor sliding plate are used for connecting a compressor piston, the manufacturing method comprises the following steps: preparing a rocker blank; grinding an initial sliding surface on the rocker blank; performing wire cutting along the initial sliding surface to process an initial hinge surface; performing surface treatment on the initial sliding surface and the initial hinge surface to obtain a sliding surface and a hinge surface; and grinding two end surfaces of the rocker blank in a height direction to obtain a compressor rocker. The application solves the problem that the relative position accuracy of the hinge part of the rocker is low, and the assembly is prone to movement jamming, wear and noise after assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressor, in particular to a manufacturing method of compressor rocking vane. BACKGROUND

[0002] In a rotary compressor, the compressor rocking vane is a key transmission component, which is attached to the side of the compressor slide vane and hinged to the cylinder wall of the compressor. During the eccentric rotation of the compressor piston, the compressor slide vane can rotate and slide relative to the cylinder wall of the compressor, so as to periodically change the volume of the crescent space between the cylinder and the piston, thereby completing the processes of air intake, compression and air exhaust.

[0003] The machining precision of the compressor rocking vane directly affects the operation stability, energy consumption and service life of the compressor. In the prior art, the machining of the compressor rocking vane usually adopts the method of blank turning and fine grinding, and the relative position accuracy of the hinged part of the rocking vane is low, which easily leads to movement jamming after assembly, resulting in wear and noise. SUMMARY

[0004] The problem solved by the present application is that the relative position accuracy of the hinged part of the rocking vane is low, which easily leads to movement jamming after assembly, resulting in wear and noise.

[0005] To solve the above problems, the present application provides a manufacturing method of compressor rocking vane, the compressor rocking vane has a sliding surface for being arranged on both sides of the compressor slide vane, and the compressor rocking vane has a hinged surface on the side away from the sliding surface, the hinged surface is used for being hinged to the cylinder wall of the compressor, the end of the compressor slide vane is used for connecting the compressor piston, and the manufacturing method comprises the following steps: preparing a rocking vane blank; grinding an initial sliding surface on the rocking vane blank; performing linear cutting along the initial sliding surface to process an initial hinged surface; performing surface treatment on the initial sliding surface and the initial hinged surface to obtain a sliding surface and a hinged surface; and grinding the end faces of the rocking vane blank in the height direction to obtain a compressor rocking vane.

[0006] After adopting the technical scheme, the initial sliding surface is machined on the rocking vane blank, which can take the initial sliding surface as a more accurate reference, and facilitate more accurate linear cutting to process the initial hinged surface.

[0007] The hinge surface of the compressor rocker plate far away from the compressor slide is processed by the wire cutting process in a predetermined path, which can effectively improve the accuracy of the hinge surface and improve the processing efficiency. On the one hand, the perpendicularity of the hinge surface relative to the end surface is improved, so that when the compressor rocker plate and the corresponding arc-shaped hinge groove in the compressor cylinder wall cooperate, the compressor rocker plate will not tilt in the axial direction, making it easier to assemble, and during the swinging process of the compressor piston, the compressor rocker plate will not tilt and collide to generate noise, improving the quietness and safety. On the other hand, the symmetry of the hinge surface relative to the median line of the sliding surface is improved, and the circular arcs at both ends of the hinge surface have higher consistency, so that when the compressor rocker plate rotates clockwise or counterclockwise with the compressor slide, the rotation amplitude will not deviate due to different friction forces, further improving the stability of the compressor piston swing.

[0008] The initial sliding surface and the initial hinge surface are subjected to surface treatment, further reducing the roughness and reducing the frictional resistance between the compressor rocker plate and the compressor slide or the compressor cylinder wall during operation, thereby improving the service life and working efficiency of the rocker plate.

[0009] The two end surfaces of the rocker plate blank in the height direction are ground, further improving the flatness of the two end surfaces, avoiding the tilting of the compressor rocker plate, and improving the installation accuracy and running stability of the compressor rocker plate in the compressor cylinder wall.

[0010] Further, the compressor rocker plate further comprises a transition portion between the sliding surface and the hinge surface, the transition portion being obtained by partially removing the two ends of the hinge surface; the wire cutting along the initial sliding surface is performed to process the initial hinge surface, specifically including: wire cutting along the initial sliding surface to sequentially process the initial transition portion, the initial hinge surface, and the initial transition portion on the other side of the initial hinge surface.

[0011] After adopting the technical scheme, the opening between the hinge groove in the compressor cylinder wall and the piston cavity needs to be large enough to avoid the swinging compressor slide, i.e. the opening width is greater than the thickness of the compressor slide. Correspondingly, when the compressor slide swings to any position, part of the end of the compressor rocker plate will enter the piston cavity from the opening, therefore, the removed transition portion on the compressor rocker plate can avoid the compressor piston from being damaged by touching the edge of the compressor rocker plate. The gap between the transition portion and the inner wall of the hinge groove can accommodate lubricating oil, effectively reducing the friction between the compressor rocker plate and the hinge groove, and improving the service life. By using the wire cutting process, the transition portion can be formed synchronously with the hinge surface, improving the processing efficiency and accuracy, and saving the additional turning process of the transition portion.

[0012] Further, the transition portion comprises: an avoidance surface, which is perpendicular to the sliding surface.

[0013] The technical effect achieved by adopting this technical solution is as follows: when the compressor vane swings to the middle position, that is, the hinge point between the compressor piston and the compressor vane is directly opposite the opening, the distance between the compressor piston and the opening is the closest, and the clearance surface can play a limiting role for the compressor piston.

[0014] Furthermore, the transition portion includes: a first chamfered surface and a second chamfered surface, wherein the first chamfered surface is located between the sliding surface and the clearance surface, and the second chamfered surface is located between the clearance surface and the hinge surface; the step of sequentially processing the initial transition portion, the initial hinge surface, and the initial transition portion on the other side of the initial hinge surface specifically includes: sequentially processing the initial first chamfered surface, the initial clearance surface, the initial second chamfered surface, the initial hinge surface, and the initial second chamfered surface, the initial clearance surface, and the initial first chamfered surface on the other side of the initial hinge surface.

[0015] The technical effects achieved by adopting this solution are as follows: The first chamfered surface prevents wear between the edges of the sliding surface and the clearance surface and the side of the compressor vane, avoids collisions at the hinge point between the compressor vane and the compressor piston, protects the compressor vane, and makes the sliding between the compressor vanes smoother. The second chamfered surface prevents wear between the edges of the clearance surface and the hinge surface and the hinge groove in the compressor cylinder wall, protects the hinge groove and opening, and improves the smoothness of the hinge between the compressor vane and the hinge groove. The first and second chamfered surfaces are processed together using wire cutting technology, forming them in one step, saving chamfering and grinding processes, improving efficiency, and improving the precision of the first and second chamfered surfaces, reducing burrs, improving the edge consistency of the compressor vanes on both sides, and allowing the compressor vanes to be interchangeably installed on either side of the compressor vane.

[0016] Furthermore, the radius of the first chamfered surface is 0.3 to 0.6 mm; and / or, the radius of the second chamfered surface is 0.3 to 0.6 mm.

[0017] The technical effects achieved by adopting this solution are as follows: The first chamfer, within the range of 0.3 to 0.6 mm, ensures effective contact between the sliding surface and the side of the compressor vane, improving sliding stability, and effectively avoids friction between the edge of the sliding surface and the compressor vane. The second chamfer, also within the range of 0.3 to 0.6 mm, ensures effective contact between the hinge surface and the hinge groove, improving sliding stability, and effectively avoids friction between the edge of the hinge surface and the opening of the hinge groove.

[0018] Furthermore, the distance between the two clearance surfaces of the compressor vane is 8 to 12 mm.

[0019] The technical effects achieved by adopting this technical solution are as follows: at this distance, the amount of wire cutting removed by forming the avoidance surface on both sides of the compressor vane will not be too large, ensuring the effective contact area between the sliding surface and the side of the compressor vane, as well as the effective contact between the hinge surface and the hinge groove, and the edge of the compressor vane will never protrude from the opening into the piston cavity.

[0020] Furthermore, the radius of the hinge surface is 4 to 8 mm.

[0021] The technical effects achieved by adopting this solution are as follows: while miniaturizing the compressor vanes and compressor shrouds, the compressor vanes can withstand sufficient radial loads. The thickness of the compressor shrouds is limited by the radius of the hinge surface; within this radius, the compressor shrouds also have sufficient thickness to prevent torsion.

[0022] Furthermore, the maximum thickness from the hinge surface to the sliding surface is 3mm to 5mm, and is less than the radius of the hinge surface.

[0023] The technical effects achieved by adopting this technical solution are as follows: The maximum thickness from the hinge surface to the sliding surface is the thickness of the compressor vane. The ratio of this thickness to the radius of the hinge surface needs to be within a suitable range. If the ratio is too large, the compressor vane is prone to twisting or breaking. If the ratio is too large, the opening of the hinge groove needs to be large enough to ensure that the compressor vane has a sufficient swing angle, which will lead to a decrease in the strength of the compressor cylinder wall. Therefore, the maximum thickness from the hinge surface to the sliding surface within this range can achieve sufficient strength of the compressor vane and reduce the opening size, thereby improving the stability of the transmission between the compressor vane and the compressor piston.

[0024] Furthermore, the initial sliding surface and the initial hinge surface are subjected to surface treatment to obtain the sliding surface and the hinge surface, specifically including: polishing the initial sliding surface and the initial hinge surface to obtain the sliding surface and the hinge surface.

[0025] The technical effects achieved by adopting this technical solution are as follows: polishing the initial sliding surface and the initial hinge surface can further reduce surface roughness, remove the deteriorated layer, reduce the wear of the compressor vanes and compressor sliding vanes during relative sliding, and reduce the wear of the compressor vanes and hinge grooves during relative rotation; reduce surface defects and improve oxidation resistance.

[0026] Furthermore, the preparation of the shaker blank specifically includes: preparing raw materials; grinding the side of the raw materials in the height direction of the shaker blank; and cutting the raw materials in a direction perpendicular to the height direction to obtain the shaker blank.

[0027] The technical effects achieved by adopting this technical solution are as follows: after the side of the raw material is ground into a flat surface, it is convenient to process the initial sliding surface; the flat surface on the raw material can serve as a reference for the thickness of the shaker blank, making it convenient to cut raw materials of appropriate thickness to prepare shaker blanks and saving materials.

[0028] In summary, the above-mentioned technical solutions of this application can have one or more of the following advantages or beneficial effects: I) Machining the initial sliding surface on the rotor blank allows the initial sliding surface to serve as a more accurate reference, facilitating more accurate wire EDM machining of the initial hinge surface; II) Using wire EDM to machine the hinge surface of the compressor rotor away from the compressor rotor via a predetermined path can effectively improve the accuracy of the hinge surface and increase machining efficiency; III) Using wire EDM, the first chamfer surface, the second chamfer surface, and the clearance surface can be formed simultaneously with the hinge surface, improving machining efficiency and accuracy, and eliminating the need for... Additional turning processes at Watanabe; IV) The removal of the transition portion on the compressor vane prevents the compressor piston from contacting the edge of the compressor vane and causing damage. Furthermore, a gap is formed between the transition portion and the inner wall of the hinge groove, which can accommodate lubricating oil, effectively reducing friction between the compressor vane and the hinge groove and improving service life; V) Polishing the initial sliding surface and the initial hinge surface further reduces surface roughness, decreasing wear on the compressor vane and compressor sliding plate during relative sliding, as well as wear on the compressor vane and hinge groove during relative rotation; reducing surface defects and improving oxidation resistance. Attached Figure Description

[0029] Figure 1 A flowchart illustrating a method for manufacturing compressor rotor blades provided by the present invention;

[0030] Figure 2 This is a schematic diagram of the compressor's shaking vanes;

[0031] Figure 3 This is a structural schematic diagram of the compressor rotor from another perspective;

[0032] Figure 4 This is a schematic diagram of the structure of another type of compressor rotor;

[0033] Figure 5 This is a schematic diagram of the installation structure of the compressor rotor.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100 - Compressor vane; 110 - Hinge surface; 120 - Sliding surface; 130 - End face; 140 - Transition section; 141 - Clearance surface; 142 - First chamfered surface; 143 - Second chamfered surface; 144 - Extension section; 200 - Compressor vane; 300 - Compressor piston; 400 - Compressor cylinder wall. Detailed Implementation

[0036] The purpose of this invention is to provide a method for manufacturing compressor vanes, which enables high-precision machining of the hinge surfaces of compressor vanes.

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] See Figures 1-5 This invention provides a method for manufacturing a compressor vane 100. The compressor vane 100 has sliding surfaces 120 disposed on both sides of a compressor vane 200, and a hinge surface 110 on the side away from the sliding surfaces 120. The hinge surface 110 is used to hinge with the compressor cylinder wall 400. The end of the compressor vane 200 is used to connect to the compressor piston 300. The manufacturing method includes: preparing a vane blank; grinding an initial sliding surface 120 on the vane blank; performing wire cutting along the initial sliding surface 120 to obtain the initial hinge surface 110; performing surface treatment on the initial sliding surface 120 and the initial hinge surface 110 to obtain the sliding surface 120 and the hinge surface 110; and grinding the two end faces 130 in the height direction of the vane blank to obtain the compressor vane 100.

[0039] In this embodiment, machining the initial sliding surface 120 on the rocker blank allows the initial sliding surface 120 to serve as a more accurate reference, facilitating more accurate wire cutting to machine the initial hinge surface 110.

[0040] Using wire EDM to machine the hinge surface 110 of the compressor vane 100 away from the compressor sliding vane 200 along a predetermined path can effectively improve the accuracy of the hinge surface 110 and increase machining efficiency. On one hand, it improves the perpendicularity of the hinge surface 110 to the end face 130, so that when the compressor vane 100 and the corresponding arc-shaped hinge groove in the compressor cylinder wall 400 are engaged, the compressor vane 100 will not tilt axially, making assembly easier. Furthermore, during the swing of the compressor piston 300, the compressor vane 100 will not tilt or collide, generating noise, thus improving quietness and safety. On the other hand, it improves the symmetry of the hinge surface 110 relative to the perpendicular bisector of the sliding surface 120, giving the arcs at both ends of the hinge surface 110 greater consistency. This ensures that when the compressor vane 100 rotates clockwise or counterclockwise with the compressor sliding vane 200, the rotation amplitude will not deviate due to different frictional forces, further improving the stability of the compressor piston 300's swing.

[0041] The initial sliding surface 120 and the initial hinge surface 110 are surface treated to further reduce roughness, thereby reducing the frictional resistance between the compressor vane 100 and the compressor vane 200 or the compressor cylinder wall 400 during operation, and improving the service life and working efficiency of the vane.

[0042] Grinding the two end faces 130 in the height direction of the blade blank further improves the flatness of the two end faces 130, prevents the compressor blade 100 from tilting, and improves the installation accuracy and operational stability of the compressor blade 100 in the compressor cylinder wall 400.

[0043] In one specific embodiment, the preparation of the shaker blank includes: preparing raw materials; grinding the side of the raw materials in the height direction of the shaker blank; and cutting the raw materials in the vertical height direction to obtain the shaker blank.

[0044] It should be noted that grinding the side of the raw material to form a flat surface facilitates the machining of the initial sliding surface 120; the flat surface on the raw material can serve as a reference for the thickness of the shaker blank, making it easier to cut raw materials of suitable thickness to prepare shaker blanks and save materials.

[0045] In one specific embodiment, the compressor vane 100 is made of high-speed steel, such as SKH-51. The manufacturing method further includes heat treatment of the vane blank after preparation. Specifically, after quenching, cryogenic treatment, and tempering, the vane blank forms a stable microstructure, effectively increasing its hardness to 63 to 66 HRC.

[0046] In one specific embodiment, the compressor vane 100 further includes a transition portion 140 between the sliding surface 120 and the hinge surface 110. The transition portion 140 is obtained by partially removing both ends of the hinge surface 110. The initial hinge surface 110 is obtained by wire cutting along the initial sliding surface 120. Specifically, the initial transition portion 140, the initial hinge surface 110, and the initial transition portion 140 on the other side of the initial hinge surface 110 are obtained by wire cutting along the initial sliding surface 120 in sequence.

[0047] It should be noted that the opening between the hinge groove inside the compressor cylinder wall 400 and the piston cavity needs to be large enough to avoid the oscillating compressor vane 200; that is, the opening width is greater than the thickness of the compressor vane 200. Correspondingly, when the compressor vane 200 oscillates to any position, a portion of the end of the compressor vane 100 will inevitably enter the piston cavity through the opening. Therefore, the removed transition portion 140 on the compressor vane 100 can prevent the compressor piston 300 from contacting the edge of the compressor vane 100 and causing damage. Furthermore, a gap can be formed between the transition portion 140 and the inner wall of the hinge groove to accommodate lubricating oil, effectively reducing the friction between the compressor vane 100 and the hinge groove, and improving service life. Using wire cutting technology, the transition portion 140 can be formed simultaneously with the hinge surface 110, improving processing efficiency and accuracy, and eliminating the need for additional turning processes on the transition portion 140.

[0048] In one specific embodiment, the transition portion 140 includes a clearance surface 141, which is perpendicular to the sliding surface 120.

[0049] It should be noted that when the compressor vane 200 swings to the middle position, that is, the hinge point between the compressor piston 300 and the compressor vane 200 is directly opposite the opening, the distance between the compressor piston 300 and the opening is the closest, and the clearance surface 141 can limit the compressor piston 300.

[0050] In one specific embodiment, the transition portion 140 includes: a first chamfered surface 142 and a second chamfered surface 143, wherein the first chamfered surface 142 is located between the sliding surface 120 and the clearance surface 141, and the second chamfered surface 143 is located between the clearance surface 141 and the hinge surface 110; the initial transition portion 140, the initial hinge surface 110, and the initial transition portion 140 on the other side of the initial hinge surface 110 are sequentially processed, specifically including: sequentially processing the initial first chamfered surface 142, the initial clearance surface 141, the initial second chamfered surface 143, the initial hinge surface 110, and the initial second chamfered surface 143, the initial clearance surface 141, and the initial first chamfered surface 142 on the other side of the initial hinge surface 110.

[0051] It should be noted that the first chamfered surface 142 is used to prevent the edges between the sliding surface 120 and the clearance surface 141 from causing wear on the side of the compressor vane 200, and to prevent collisions at the hinge point between the compressor vane 200 and the compressor piston 300, thus protecting the compressor vane 200 and making the sliding between the compressor blades 100 and the compressor vane 200 smoother. The second chamfered surface 143 is used to prevent the edges between the clearance surface 141 and the hinge surface 110 from causing wear on the hinge groove in the compressor cylinder wall 400, thus protecting the hinge groove and the opening, and improving the smoothness of the hinge between the compressor blades 100 and the hinge groove. The first chamfered surface 142 and the second chamfered surface 143 are processed together using wire cutting technology, forming them in one step, saving the chamfering and grinding process, improving efficiency, and improving the precision of the first chamfered surface 142 and the second chamfered surface 143, reducing burrs, and improving the edge consistency of the compressor blades 100 on both sides, so that the compressor blades 100 can be replaced and installed on either side of the compressor vane 200.

[0052] In one specific embodiment, the transition portion 140 further includes an extension portion 144, which is located between the first chamfered surface 142 and the sliding surface 120. The extension portion 144 is an inclined plane or a near-inclined arc relative to the sliding surface 120, and is tangent to the first chamfered surface 142. The extension portion 144 further reduces wear caused by the relative sliding between the sliding surface 120 and the compressor vane 200. Lubricating oil can also be accommodated between the extension portion 144 and the compressor vane 200, making the relative sliding between the compressor vane 100 and the compressor vane 200 smoother.

[0053] The extension 144 can be completed by precision grinding or wire cutting.

[0054] Preferably, the extension 144 is processed simultaneously with the wire cutting process of the first chamfered surface 142 and the sliding surface 120, saving the step of grinding the extension 144 separately and effectively improving processing efficiency. Furthermore, since the extension 144 extends from the edge of the first chamfered surface 142, its slope relative to the sliding surface 120 is extremely small. Therefore, wire cutting makes it easier to ensure the dimensional accuracy of the extension 144, avoiding uneven oscillation between the two ends of the compressor vane 100 and the compressor sliding vane 200. This results in more stable hinged movement of the compressor vane 100.

[0055] In one specific embodiment, the radius of the first chamfered surface 142 is 0.3 to 0.6 mm; and / or, the radius of the second chamfered surface 143 is 0.3 to 0.6 mm.

[0056] Preferably, the radius of the first chamfered surface 142 is 0.5 mm; the radius of the second chamfered surface 143 is 0.5 mm.

[0057] It should be noted that the first chamfered surface 142 is in the range of 0.3 to 0.6 mm. On the one hand, it ensures effective contact between the sliding surface 120 and the side of the compressor vane 200, improving sliding stability; on the other hand, it effectively avoids friction between the edge of the sliding surface 120 and the compressor vane 200. The second chamfered surface 143 is in the range of 0.3 to 0.6 mm. On the one hand, it ensures effective contact between the hinge surface 110 and the hinge groove, improving sliding stability; on the other hand, it effectively avoids friction between the edge of the hinge surface 110 and the edge opening of the hinge groove.

[0058] In one specific embodiment, the distance between the two clearance surfaces 141 of the compressor vane 100 is 8 to 12 mm, preferably 10 mm.

[0059] It should be noted that at this distance, the amount of wire cutting removed by the clearance surfaces 141 formed on both sides of the compressor vane 100 will not be too large, ensuring the effective contact area between the sliding surface 120 and the side of the compressor vane 200, as well as the effective contact between the hinge surface 110 and the hinge groove, and the edge of the compressor vane 100 will never protrude from the opening into the piston cavity.

[0060] In one specific embodiment, the length of the extension 144 extending along the sliding surface 120 is 1 / 5 to 1 / 3, for example, 1 / 4, of the distance between the two clearance surfaces 141. The end of the extension 144 connected to the first chamfered surface 142 is perpendicular to the sliding surface 120 by, for example, 0.001 to 0.004 mm, for example, 0.002 mm. Therefore, the slope of the extension 144 relative to the sliding surface 120 is extremely small, which can prevent the extension 144 of the compressor vane 100 from swinging too much relative to the compressor vane 200, and improve the stability of the hinge transmission. At this size, it is difficult to ensure the symmetry of the extensions 144 on both sides of the compressor vane 100 by conventional grinding processes; wire cutting can achieve a better high-precision effect.

[0061] In one specific embodiment, the radius of the hinge surface 110 is 4 to 8 mm, preferably 5.97, 5.98, or 5.99 mm. The radius of the hinge surface 110 is 0.01 to 0.03 mm smaller than the radius of the hinge groove in the corresponding compressor cylinder wall 400, for example, 0.02 mm.

[0062] It should be noted that while the compressor vane 100 and compressor sliding vane 200 are miniaturized as a whole, the compressor vane 100 can withstand sufficient radial loads. The thickness of the compressor sliding vane 200 is limited by the radius of the hinge surface 110. Within this radius, the compressor sliding vane 200 also has sufficient thickness to prevent torsion.

[0063] Furthermore, under the aforementioned preferred dimensions, the hinge surface 110 can achieve a perpendicularity of 0.005 to the end face 130 and a symmetry of 0.15 between the hinge surface 110 and the sliding surface 120 using a wire cutting process.

[0064] In one specific embodiment, the maximum thickness of the hinge surface 110 to the sliding surface 120 is 3 mm to 5 mm, and is less than the radius of the hinge surface 110; preferably, the maximum thickness is 4 mm.

[0065] It should be noted that the maximum thickness of the hinge surface 110 to the sliding surface 120 is the thickness of the compressor vane 100. The ratio of this thickness to the radius of the hinge surface 110 needs to be within a suitable range. If the ratio is too large, the compressor vane 200 is prone to twisting or breaking. If the ratio is too large, the opening of the hinge groove needs to be large enough to ensure that the compressor vane 200 has a sufficient swing angle, which will lead to a decrease in the strength of the compressor cylinder wall 400. Therefore, the maximum thickness of the hinge surface 110 to the sliding surface 120 within this range can achieve sufficient strength of the compressor vane 200 and reduce the size of the opening, thereby improving the stability of the transmission between the compressor vane 200 and the compressor piston 300.

[0066] In one specific embodiment, when wire cutting is performed by feeding along the initial sliding surface 120, multiple wire cuts can be performed, for example, including one wire cutting roughing and at least one wire cutting finishing.

[0067] Preferably, after wire EDM roughing, the machining allowance for wire EDM finishing is 0.045 mm to 0.05 mm; after one or more wire EDM finishing operations, the machining allowance for surface treatment is 0.005 mm to 0.01 mm. This allows the roughness Ra of the hinge surface 110 to reach 0.6 to 0.8.

[0068] In one specific embodiment, the initial sliding surface 120 and the initial hinge surface 110 are surface treated to obtain the sliding surface 120 and the hinge surface 110, specifically including: polishing the initial sliding surface 120 and the initial hinge surface 110 to obtain the sliding surface 120 and the hinge surface 110.

[0069] It should be noted that polishing the initial sliding surface 120 and the initial hinge surface 110 can further reduce the surface roughness, making the roughness Ra of the hinge surface 110 ≤ 0.3. This removes the altered layer, reduces wear on the compressor vanes 100 and 200 during relative sliding, and wear on the compressor vanes 100 and the hinge groove during relative rotation; reduces surface defects, and improves oxidation resistance.

[0070] In one specific embodiment, the two end faces 130 in the height direction of the swivel blank are ground, specifically including: fine grinding and ultra-fine grinding of the two end faces 130 in the height direction of the swivel blank. For example, fine grinding of the end faces 130 uses an alumina grinding wheel to quickly improve the surface finish of the end faces 130; ultra-fine grinding of the end faces 130 uses a cubic boron nitride grinding wheel or a diamond grinding wheel to achieve further 0.01mm-level dressing of all or part of the end faces 130, thereby making the surface roughness Ra of the end faces 130 ≤ 0.3.

[0071] In one specific embodiment, after obtaining the compressor vane 100, the compressor vane 100 is cleaned, inspected, and subjected to rust prevention treatment. For example, the compressor vane 100 is ultrasonically cleaned to remove residual cutting fluid and debris; the dimensions of the compressor vane 100 are inspected, as well as the perpendicularity of the hinge surface 110 to the end face 130, the symmetry of the perpendicular bisector of the hinge surface 110 to the sliding surface 120, and the roughness of the hinge surface 110, sliding surface 120, end face 130, and transition portion 140; the compressor vane 100 is soaked in rust-preventive oil to improve its oxidation resistance.

[0072] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A method for manufacturing a compressor vane, wherein the compressor vane has sliding surfaces for being disposed on both sides of the compressor vane, and the compressor vane has a hinge surface on the side away from the sliding surfaces, the hinge surface being for hinged to a compressor cylinder wall, and the end of the compressor vane being for connecting to a compressor piston, characterized in that, The manufacturing method includes: Preparation of shaker blanks; An initial sliding surface is obtained by grinding the rocker blank; The initial hinge surface is obtained by wire cutting along the initial sliding surface. The initial sliding surface and the initial hinge surface are surface treated to obtain the sliding surface and the hinge surface; The two ends of the blade blank in the height direction are ground to obtain the compressor blade; The compressor vane also includes a transition portion between the sliding surface and the hinge surface, which is obtained by partially removing the two ends of the hinge surface; The process of wire cutting along the initial sliding surface to obtain the initial hinge surface specifically includes: The initial transition portion, the initial hinge surface, and the initial transition portion on the other side of the initial hinge surface are sequentially machined by wire cutting along the initial sliding surface. The transition portion includes: a clearance surface, which is perpendicular to the sliding surface; The transition portion includes: a first chamfered surface and a second chamfered surface, wherein the first chamfered surface is located between the sliding surface and the clearance surface, and the second chamfered surface is located between the clearance surface and the hinge surface; The sequential processing of the initial transition portion, the initial hinge surface, and the initial transition portion on the other side of the initial hinge surface specifically includes: The initial first chamfered surface, the initial clearance surface, the initial second chamfered surface, the initial hinge surface, and the initial second chamfered surface, the initial clearance surface, and the initial first chamfered surface on the other side of the initial hinge surface are obtained by sequential processing.

2. The manufacturing method according to claim 1, characterized in that, The radius of the first chamfered surface is 0.3 to 0.6 mm; And / or, the radius of the second chamfered surface is 0.3 to 0.6 mm.

3. The manufacturing method according to claim 1, characterized in that, The distance between the two clearance surfaces of the compressor vane is 8 to 12 mm.

4. The manufacturing method according to claim 1, characterized in that, The radius of the hinge surface is 4 to 8 mm.

5. The manufacturing method according to claim 1, characterized in that, The maximum thickness from the hinge surface to the sliding surface is 3mm to 5mm, and is less than the radius of the hinge surface.

6. The manufacturing method according to claim 1, characterized in that, The initial sliding surface and the initial hinge surface are surface-treated to obtain the sliding surface and the hinge surface, specifically including: The initial sliding surface and the initial hinge surface are polished to obtain the sliding surface and the hinge surface.

7. The manufacturing method according to claim 1, characterized in that, The preparation of the shaker blank specifically includes: Preparation of raw materials; The side surface of the raw material is ground along the height direction of the swivel blank; The raw material is cut along a direction perpendicular to the height to obtain the swashplate blank.

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