A method of manufacturing a compressor vane

Abstract

The application provides a manufacturing method of a compressor sliding vane, the compressor sliding vane has a sliding surface slidingly connected with a cylinder body of a compressor cylinder, and a hinged part for hinging a compressor piston, for realizing eccentric rotation of the compressor piston and a crankshaft, and realizing air compression, and the manufacturing method comprises the following steps: preparing a sliding vane body; the thickness of the sliding vane body is 2.8mm to 4.5mm, the sliding vane body has a first plane for machining the sliding surface, and a second plane located at the axial two ends of the hinged part; performing grinding treatment on the first plane; feeding from the first plane of the sliding vane body, performing linear cutting at least once according to a target track of the hinged part, and obtaining the hinged part, so that the diameter of the hinged part ranges from 1.5mm to 3.5mm; performing fine grinding treatment on the second plane; and performing inspection, edge treatment and cleaning on the surface of the sliding vane body to obtain the compressor sliding vane. The application solves the problems that the size precision of the hinged end of the sliding vane cannot meet the requirements, the high-speed and smooth rotation is difficult, and vibration and noise are easily generated.

Description

Technical Field

[0001] This invention relates to the field of compressor vane technology, and more specifically, to a method for manufacturing compressor vanes. Background Technology

[0002] A compressor has a cylindrical piston eccentrically mounted to the crankshaft and a sliding vane hinged to the piston. The vane slides radially within the cylinder wall, while the piston performs planetary rolling motion within the cylinder. This periodically changes the volume of the crescent-shaped space between the cylinder and the piston, thus completing the intake, compression, and exhaust processes. Rotary compressors are widely used in small and medium-sized refrigeration equipment such as household air conditioners and refrigerators due to their high efficiency, compact structure, small size, and light weight.

[0003] The end of the vane that is hinged to the piston is usually formed by machining, drilling or grinding. However, the hinge surface of the vane is not smooth, and it is difficult to guarantee the cylindricity of the hinge surface and the perpendicularity of the hinge surface to the end face. As a result, the dimensional accuracy of the hinge end of the vane does not meet the requirements, making it difficult to rotate smoothly at high speed. The compressor is prone to vibration and generates a lot of noise during operation, which reduces the life of the vane. Summary of the Invention

[0004] The problem solved by this invention is that the dimensional accuracy of the slider hinge end does not meet the requirements, making it difficult to rotate smoothly at high speed and easily causing vibration and noise.

[0005] To address the aforementioned problems, this invention provides a method for manufacturing a compressor vane. The compressor vane has a sliding surface that slides in connection with the compressor cylinder body, and a hinge portion for hinged connection with the compressor piston, used to achieve eccentric rotation of the compressor piston and crankshaft to compress air. The manufacturing method includes: preparing a vane body; the thickness of the vane body is 2.8 mm to 4.5 mm, the vane body has a first plane for machining the sliding surface, and a second plane located at both axial ends of the hinge portion; grinding the first plane; making a cut from the first plane of the vane body and performing at least one wire cut according to the target trajectory of the hinge portion to obtain the hinge portion, such that the diameter of the hinge portion is in the range of 1.5 mm to 3.5 mm; fine grinding the second plane; and inspecting, edge-reducing, and cleaning the surface of the vane body to obtain the compressor vane.

[0006] The technical effects achieved by adopting this technical solution are as follows: The compressor vane is machined with wire cutting technology to connect the hinge part to the compressor piston. This can ensure that the perpendicularity of the side of the hinge part relative to the second plane, the parallelism relative to the first plane, and the cylindricity of the side of the hinge part are improved, thereby improving the smoothness of the hinge transmission, reducing the friction force on the hinge part, and avoiding noise and corrosion caused by wear.

[0007] The vane body has a thickness of 2.8mm to 4.5mm, achieving eccentric transmission while reducing the space occupied inside the compressor, thus reducing the compressor's size. The hinge portion has a diameter of 1.5mm to 3.5mm. Given the limited thickness of the vane body, the hinge portion has a sufficient diameter to prevent bending. Machining the hinge portion on a thinner vane body, with its thickness dimension slightly smaller than the vane body, results in a smaller range of target trajectory variations. However, the axial dimension of the hinge portion is larger. In this case, wire EDM is more convenient than other machining methods, and the molybdenum wire used in wire EDM is thinner, resulting in higher precision.

[0008] Furthermore, the hinge part of the compressor vane can be formed in one step using wire cutting technology, which is more efficient. When processing the opposite sides of the hinge part, there is no need to adjust the position or direction of the workpiece, making it easier to ensure the symmetry of the two sides of the hinge part.

[0009] Using wire cutting technology allows for the simultaneous processing of the hinge joints of at least two compressor vanes, thereby significantly improving processing efficiency and ensuring dimensional consistency of the hinge joints of the compressor vanes.

[0010] Furthermore, the hinge portion is a hinge shaft, and the compressor vane includes a base and a snap-fit ​​portion connecting the hinge shaft and the base. The snap-fit ​​portion has snap-fit ​​grooves on both sides. The cutting process involves entering the vane body from the first plane and performing at least one line cut according to the target trajectory of the hinge portion. Specifically, this includes the following steps: entering the vane body from the first plane and performing at least one line cut along the target trajectory formed by the snap-fit ​​groove, the outer wall of the hinge shaft, and the snap-fit ​​groove on the other side.

[0011] The technical effects achieved by adopting this technical solution are as follows: the outer wall of the hinge shaft and the two side locking grooves can be formed in one step, quickly approaching the target size. The hinge shaft does not need to be repeatedly ground and shaped and corrected, and the locking grooves do not need to be repeatedly ground to increase the groove depth. Therefore, the number of grinding adjustments is reduced, significantly improving processing efficiency.

[0012] Furthermore, the diameter of the hinge shaft ranges from 2.5 mm to 3.5 mm; the thickness of the snap-fit ​​portion ranges from 1.5 mm to 2.5 mm.

[0013] The technical effects achieved by adopting this technical solution are as follows: the diameter of the hinge shaft is slightly smaller than that of the slide body, ensuring that the hinge shaft has a sufficient diameter within the limited thickness of the slide body, thus achieving a more stable hinge transmission effect; the thickness of the locking part is slightly smaller than that of the hinge shaft, allowing the locking part to be tightly locked with the compressor piston, preventing the hinge shaft from disengaging from the compressor piston. At the same time, the locking grooves formed on both sides of the locking part can play a certain role in avoiding the compressor piston when it rotates eccentrically, allowing the compressor piston to have a certain swing range.

[0014] Furthermore, the hinge portion comprises a hinge hole and a snap-fit ​​opening communicating with the hinge hole; the cutting tool enters from the first plane of the slider body, and at least one line cut is performed according to the target trajectory of the hinge portion, specifically including the following steps: the cutting tool enters from the first plane of the slider body, and at least one line cut is performed along the target trajectory formed by the outer plane of the snap-fit ​​opening, the snap-fit ​​opening, the inner wall of the hinge hole, the other side of the snap-fit ​​opening, and the other side of the outer plane of the snap-fit ​​opening.

[0015] The technical effects achieved by adopting this solution are as follows: the inner wall of the hinge hole and the two side walls of the snap-fit ​​opening can be formed in one step, quickly approaching the target size. The hinge hole does not require repeated grinding to increase its size, and the snap-fit ​​opening does not require wall breaking or multiple grinding to enlarge its size. After the hinge hole and snap-fit ​​opening are formed, only simple corrections are needed, reducing the number of grinding adjustments and thus significantly improving processing efficiency. Starting the cut from the first plane allows for the removal of a certain thickness from the end face where the hinge opening is located. The end face after wire cutting is flatter, has higher dimensional accuracy, and is less likely to cause wear on the compressor piston.

[0016] Furthermore, the diameter of the hinge hole ranges from 1.5 mm to 2.5 mm; the distance from the axis of the hinge hole to the outer plane of the snap-fit ​​opening is from 0.25 mm to 0.75 mm.

[0017] The technical effects achieved by adopting this solution are as follows: Within this diameter range, the wall thickness on both sides of the hinge hole can be effectively guaranteed. When the hinge hole rotates relative to the hinge shaft assembly on the compressor piston side, the side walls of the hinge hole are not easily bent or broken, resulting in higher strength. Within this range, the distance from the axis of the hinge hole to the outer plane of the snap-fit ​​opening allows for the formation of a snap-fit ​​opening of suitable width outside the hinge hole. The hinge shaft assembly on the compressor piston side can rotate flexibly without disengaging from the hinge hole, and the snap-fit ​​position of the hinge shaft assembly is not too thin, which would lead to easy breakage.

[0018] Furthermore, the second plane is subjected to fine grinding, specifically including the following steps: installing the hinge shaft assembly on one side of the compressor piston into the hinge hole, fine grinding the second plane, and then disassembling the hinge shaft assembly.

[0019] The technical effects achieved by adopting this solution are as follows: The hinge shaft assembly, when installed in the hinge hole, provides stable support to the inner wall of the hinge hole, preventing minor deformation of the second plane during fine grinding that could cause the hinge shaft assembly to fail to fit the hinge hole. Furthermore, the hinge shaft assembly positions the hinge hole, ensuring the perpendicularity of the second plane to the inner wall of the hinge hole after fine grinding, provided the hinge shaft assembly is installed vertically. After removing the hinge shaft assembly, both the assembly and the hinge hole can be easily cleaned, reducing grinding debris residue and facilitating subsequent verification.

[0020] Furthermore, before performing fine grinding on the second plane, the manufacturing method further includes the following steps: inspecting the inner diameter of the hinge hole; if the hinge hole error condition is met, then installing the hinge shaft assembly on the side of the compressor piston into the hinge hole.

[0021] The technical effects achieved by adopting this technical solution are as follows: After the inner diameter of the hinge hole is inspected and meets the error conditions, on the one hand, the transmission between the hinge hole and the hinge shaft assembly on the compressor piston side can be smoother, avoiding damage due to friction; on the other hand, after the perpendicularity between the side wall of the hinge hole and the second plane before fine grinding meets the requirements, the hinge shaft assembly can play an effective positioning role after mating, becoming a reference for perpendicularity, and better ensuring the flatness of the second plane after fine grinding and its perpendicularity to the hinge hole.

[0022] Furthermore, the surface of the slide body is inspected, the edges are treated, and the slide body is cleaned to obtain the compressor slide. Specifically, the following steps are included: detecting the perpendicularity of the side of the hinge portion to the second plane; if the perpendicularity condition is met, the edges of the slide body are ground, and the slide body is cleaned to obtain the compressor slide.

[0023] The technical effect achieved by adopting this technical solution is that once the perpendicularity of the side of the hinge to the second plane meets the requirements, it can be used. At this time, grinding the edge can make it easier to install the hinge shaft assembly or hinge hole assembly on the side of the compressor piston during actual use, thus avoiding wear on the side of the compressor piston.

[0024] Furthermore, after obtaining the hinge portion, the manufacturing method further includes the following steps: grinding the first plane; wherein, inspecting, edge-processing and cleaning the surface of the slide body to obtain the compressor slide specifically includes the following steps: detecting the perpendicularity between the first plane and the second plane; if the perpendicularity condition is met, grinding the edges of the slide body and cleaning the slide body to obtain the compressor slide.

[0025] The technical effects achieved by adopting this technical solution are as follows: once the perpendicularity between the first plane and the second plane meets the requirements, it can be installed into the compressor cylinder body to achieve radial sliding and transmission. At this time, grinding the edges can make it easier to install into the corresponding sliding vane groove of the compressor cylinder body during actual use, avoiding wear on the edge of the sliding vane groove.

[0026] Furthermore, the step of performing at least one wire cut based on the target trajectory of the hinge portion specifically includes the following steps: performing wire cutting rough machining based on the target trajectory of the hinge portion, and performing wire cutting fine machining in the reverse direction based on the target trajectory of the hinge portion, wherein the machining allowance for the wire cutting fine machining is 0.045mm to 0.05mm.

[0027] The technical effects achieved by adopting this solution are as follows: Wire EDM roughing retains the machining allowance, allowing for rapid approach to the target size and removal of waste material, reducing the number of wire EDM finishing operations and improving efficiency. Furthermore, the wire EDM roughing process provides sufficient cutting depth, improving accuracy while preventing damage to the electrode wire. Wire EDM finishing is performed in the opposite direction, reducing the movement path of the molybdenum wire and improving cutting efficiency.

[0028] In summary, the above-mentioned technical solutions of this application can have one or more of the following advantages or beneficial effects: i) The compressor vane is processed by wire cutting to machine the hinge part, which is used to hinge the compressor piston. This can ensure the improved perpendicularity of the side of the hinge part relative to the second plane, the parallelism relative to the first plane, and the cylindricity of the side of the hinge part, thereby improving the smoothness of the hinge transmission, reducing the friction force on the hinge part, and avoiding noise and corrosion caused by wear; ii) The hinge part can be formed in one step by wire cutting, which is more efficient. When processing the opposite sides of the hinge part, there is no need to adjust the position or direction of the workpiece, making it easier to ensure the symmetry of the two sides of the hinge part; iii) The hinge shaft assembly is installed into the hinge hole, which can provide stable support for the inner wall of the hinge hole and prevent the second plane from undergoing slight deformation during the fine grinding process, which would cause the hinge shaft assembly to fail to fit the hinge hole; iv) Furthermore, the hinge shaft assembly positions the hinge hole, ensuring the perpendicularity of the second plane to the inner wall of the hinge hole after fine grinding, based on the vertical installation of the hinge shaft assembly. Attached Figure Description

[0029] Figure 1 A flowchart illustrating the manufacturing method of the compressor vane provided by the present invention;

[0030] Figure 2 A schematic diagram of a compressor vane structure;

[0031] Figure 3 This is a schematic diagram of another structure of the compressor vane;

[0032] Figure 4 for Figure 3 A schematic diagram of the sliding vane of a compressor from another perspective;

[0033] Figure 5 for Figure 4 A magnified view of a portion of region I;

[0034] Figure 6 This is a schematic diagram of another structure of the compressor vane.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100 - Compressor vane; 110 - First plane; 120 - Second plane; 130 - Hinge shaft; 131 - Lubricating oil groove; 140 - Snap-fit ​​part; 141 - Snap-fit ​​groove; 150 - Hinge hole; 151 - Snap-fit ​​opening. Detailed Implementation

[0037] The purpose of this invention is to provide a method for manufacturing compressor vanes, which enables the hinge portion of the compressor vanes to have higher precision.

[0038] 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.

[0039] See Figures 1-5 This invention provides a method for manufacturing a compressor vane 100. The compressor vane 100 has a sliding surface that is slidably connected to the compressor cylinder body, and a hinge portion for hinged connection with the compressor piston, used to realize eccentric rotation of the compressor piston and crankshaft to achieve air compression. The manufacturing method includes:

[0040] Step S1: Prepare the slider body; the thickness of the slider body is 2.8 mm to 4.5 mm, and the slider body has a first plane 110 for machining the sliding surface, and a second plane 120 located at both ends of the hinge portion along the axial direction;

[0041] Step S2: Grind the first plane 110;

[0042] Step S3: Start cutting from the first plane 110 of the slider body and perform at least one wire cut according to the target trajectory of the hinge to obtain the hinge, so that the diameter of the hinge is in the range of 1.5mm to 3.5mm.

[0043] Step S4: Perform fine grinding on the second plane 120;

[0044] Step S5: Inspect the surface of the vane body, process the edges and clean it to obtain compressor vane 100.

[0045] In this application, the compressor vane 100 is machined with a wire cutting process to hinge the compressor piston. This process can improve the perpendicularity of the side of the hinge relative to the second plane 120, the parallelism relative to the first plane 110, and the cylindricity of the side of the hinge, thereby improving the smoothness of the hinge transmission, reducing the friction force on the hinge, and avoiding noise and corrosion caused by wear.

[0046] The vane body has a thickness of 2.8mm to 4.5mm, achieving eccentric transmission while reducing the space occupied inside the compressor, thus reducing the compressor's size. The hinge portion has a diameter of 1.5mm to 3.5mm. Given the limited thickness of the vane body, the hinge portion has a sufficient diameter to prevent bending. Machining the hinge portion on a thinner vane body, with its thickness dimension slightly smaller than the vane body, results in a smaller range of target trajectory variations. However, the axial dimension of the hinge portion is larger. In this case, wire EDM is more convenient than other machining methods, and the molybdenum wire used in wire EDM is thinner, resulting in higher precision.

[0047] Furthermore, the hinge part of the compressor vane 100 can be formed in one step using wire cutting technology, which is more efficient. When processing the opposite sides of the hinge part, there is no need to adjust the position or direction of the workpiece, making it easier to ensure the symmetry of the two sides of the hinge part.

[0048] The use of wire cutting technology allows for the simultaneous processing of the hinge parts of at least two compressor vanes 100, thereby significantly improving processing efficiency and ensuring dimensional consistency of the hinge parts of the compressor vanes 100.

[0049] For example, two or more slider bodies are stacked along the axial direction of the hinge, and the first plane 110 of all slider bodies is clamped by a clamp, and the second plane 120 of adjacent slider bodies are made to coincide, thereby simultaneously wire cutting multiple slider bodies to obtain the hinge.

[0050] In one specific embodiment, the preparation of the slider body specifically includes:

[0051] The large flat surfaces on both sides of the flat material are subjected to soft grinding. These large flat surfaces correspond to the first flat surface 110 of the slider body, which is used to initially improve the flatness of the first flat surface 110.

[0052] Next, cut the material along the large flat surface to remove burrs from the large flat surface and the cutting position;

[0053] The two adjacent sides of the large flat surface are soft-ground to remove burrs.

[0054] The slide body is then subjected to heat treatment to achieve a Rockwell hardness of 30-48, thereby effectively improving hardness and wear resistance.

[0055] Compared to processes like drilling, wire EDM can cut slider bodies with higher hardness. Therefore, preferably, the Rockwell hardness of the slider body can be further increased to 42-48 during the heat treatment process.

[0056] See Figure 2In one specific embodiment, the hinge portion is a hinge shaft 130, and the compressor vane 100 includes a base and a snap-fit ​​portion 140 connecting the hinge shaft 130 and the base. The snap-fit ​​portion 140 has snap-fit ​​grooves 141 on both sides. The tool enters from the first plane 110 of the vane body and performs at least one line cut according to the target trajectory of the hinge portion. Specifically, the tool enters from the first plane 110 of the vane body and performs at least one line cut along the target trajectory formed by the snap-fit ​​groove 141, the outer wall of the hinge shaft 130, and the snap-fit ​​groove 141 on the other side.

[0057] It should be noted that the outer wall of the hinge shaft 130 and the two side locking grooves 141 can be formed in one step, quickly approaching the target size. The hinge shaft 130 does not need to be repeatedly ground and shaped and corrected, and the locking grooves 141 do not need to be repeatedly ground to increase the groove depth. Therefore, the number of grinding adjustments is reduced, significantly improving processing efficiency.

[0058] In one specific embodiment, the diameter of the hinge shaft 130 ranges from 2.5 mm to 3.5 mm; the thickness of the snap-fit ​​portion 140 ranges from 1.5 mm to 2.5 mm.

[0059] It should be noted that the diameter of the hinge shaft 130 is slightly smaller than that of the slide body. This ensures that the hinge shaft 130 has a sufficient diameter within the limited thickness of the slide body, achieving a more stable hinge transmission effect. The thickness of the locking part 140 is slightly smaller than that of the diameter of the hinge shaft 130, allowing the locking part 140 to be tightly locked with the compressor piston, preventing the hinge shaft 130 from disengaging from the compressor piston. At the same time, the locking grooves 141 formed on both sides of the locking part 140 can play a certain role in avoiding the compressor piston when it rotates eccentrically, allowing the compressor piston to have a certain range of swing.

[0060] Furthermore, when the hinge part is the hinge shaft 130, the thickness of the slider body is, for example, 3.3mm, 3.4mm, 3.5mm, 3.6mm, etc., which is not limited here. The diameter of the hinge shaft 130 is, for example, 2.9mm, 3.0mm, 3.1mm, which is not limited here.

[0061] Furthermore, the thickness of the snap-fit ​​portion 140 is, for example, 1.8mm, 1.9mm, or 2.0mm, and is not limited here.

[0062] In this embodiment, the cutting tool enters from the first plane 110 of the slider body and performs at least one wire cut along the target trajectory formed by the locking groove 141, the outer wall of the hinge shaft 130, and the locking groove 141 on the other side. Specifically, the cutting tool enters at an angle from the first plane 110 of the slider body, with the cutting direction inclined towards the side where the hinge shaft 130 is located. When the molybdenum wire approaches the target thickness of the locking part 140, the side surface of the locking part 140, i.e. the bottom surface of the locking groove 141, is processed along a direction parallel to the first plane 110. Then, the side surface of the hinge shaft 130 is processed along a target trajectory slightly larger than the diameter of the hinge shaft 130. When the molybdenum wire approaches the target thickness on the other side of the locking part 140, the other side surface of the locking part 140, i.e. the bottom surface of the other locking groove 141, is processed. Finally, the cutting tool exits at an angle from the other first plane 110 of the slider body, with the exit direction inclined away from the side where the hinge shaft 130 is located.

[0063] Preferably, the angle between the feed direction and the normal of the first plane 110 is 20°-30°, for example 25°; the angle between the output direction and the normal of the first plane 110 is 20°-30°, for example 25°.

[0064] See Figure 6 In one specific embodiment, a lubricating oil groove 131 may also be provided on the side of the hinge shaft 130. The lubricating oil groove 131 may be any form of notch removed radially from the hinge shaft 130, such as a horizontal groove or a countersunk groove, so that more lubricating oil can be accommodated between the hinge shaft 130 and the hinge hole assembly on the corresponding compressor piston side, thereby preventing wear of the hinge shaft 130.

[0065] Preferably, the lubricating oil groove 131 is formed by cutting off a thickness of 0.05-0.15 mm from the side of the hinge shaft 130.

[0066] In one specific embodiment, when the side of the hinge shaft 130 is cut in wire, the molybdenum wire is cut along the target path of the lubricating oil groove 131, so that the lubricating oil groove 131 is formed together with the side of the hinge shaft 130, thereby improving the processing efficiency.

[0067] See Figures 3-5 In another specific embodiment, the hinge portion is a hinge hole 150 and a snap-fit ​​opening 151 communicating with the hinge hole 150; the cutting tool enters from the first plane 110 of the slider body and performs at least one line cut according to the target trajectory of the hinge portion, specifically including the following steps: the cutting tool enters from the first plane 110 of the slider body and performs at least one line cut along the target trajectory formed by the outer plane of the snap-fit ​​opening 151, the snap-fit ​​opening 151, the inner wall of the hinge hole 150, the other side of the snap-fit ​​opening 151, and the other side of the outer plane of the snap-fit ​​opening 151.

[0068] It should be noted that the inner wall of the hinge hole 150 and the two side walls of the snap-fit ​​opening 151 can be formed in one step, quickly approaching the target size. The hinge hole 150 does not need to be repeatedly ground to increase its size, and the snap-fit ​​opening 151 does not need to be broken or repeatedly ground to enlarge its opening size. After the hinge hole 150 and the snap-fit ​​opening 151 are formed, only simple corrections are needed, reducing the number of grinding adjustments and thus significantly improving processing efficiency. Starting the cutting from the first plane 110 allows for the removal of a certain thickness from the end face where the hinge opening is located. The end face after wire cutting is flatter, has higher dimensional accuracy, and is less likely to cause wear on the compressor piston.

[0069] In one specific embodiment, the diameter of the hinge hole 150 ranges from 1.5 mm to 2.5 mm; the distance from the axis of the hinge hole 150 to the outer plane of the snap-fit ​​opening 151 is from 0.25 mm to 0.75 mm.

[0070] It should be noted that within this diameter range, the hinge hole 150 effectively ensures the wall thickness on both sides. When the hinge hole 150 rotates relative to the hinge shaft assembly on the compressor piston side, the side walls of the hinge hole 150 are not easily bent or broken, resulting in higher strength. Within this range, the distance from the axis of the hinge hole 150 to the outer plane of the snap-fit ​​opening 151 allows for the formation of a appropriately wide snap-fit ​​opening 151 on the outside of the hinge hole 150. This allows the hinge shaft assembly on the compressor piston side to rotate flexibly without disengaging from the hinge hole 150, and the snap-fit ​​position of the hinge shaft assembly is not too thin, which could lead to easy breakage.

[0071] Furthermore, when the hinge part is a hinge hole 150, the thickness of the slider body is, for example, 3.8mm, 3.9mm, 4.0mm, 4.1mm, etc., which is not limited here. The diameter of the hinge hole 150 is, for example, 1.8mm, 1.9mm, 2.0mm, 2.0mm, etc., which is not limited here.

[0072] Furthermore, the distance from the axis of the hinge hole 150 to the outer plane of the snap-fit ​​opening 151 is, for example, 0.5 mm, which is not limited here.

[0073] In this embodiment, the cutting tool enters from the first plane 110 of the slider body and performs at least one wire cut along the target trajectory formed by the outer plane of the snap-fit ​​opening 151, the snap-fit ​​opening 151, the inner wall of the hinge hole 150, the other side of the snap-fit ​​opening 151, and the other side of the outer plane of the snap-fit ​​opening 151. Specifically, the cutting tool enters from the normal direction of the first plane 110 of the slider body. When the molybdenum wire exceeds the target position of the edge of the snap-fit ​​opening 151, the side of the hinge hole 150 is machined with a target trajectory slightly smaller than the diameter of the hinge hole 150. When the molybdenum wire approaches the target position of the other side edge of the snap-fit ​​opening 151, the other side of the outer plane of the snap-fit ​​opening 151 is machined. Finally, the cutting tool exits from the normal direction of the other first plane 110 of the slider body.

[0074] In one specific embodiment, the second plane 120 is precision ground, which specifically includes the following steps: installing the hinge shaft assembly on the side of the compressor piston into the hinge hole 150, precision grinding the second plane 120, and then disassembling the hinge shaft assembly.

[0075] The diameter of the hinge shaft 130 matches the diameter of the hinge hole 150.

[0076] It should be noted that the hinge shaft assembly, when installed in the hinge hole 150, provides stable support to the inner wall of the hinge hole 150, preventing minor deformation of the second plane 120 during the fine grinding process that could cause the hinge shaft assembly to fail to fit the hinge hole 150. Furthermore, the hinge shaft assembly positions the hinge hole 150, ensuring the perpendicularity of the second plane 120 to the inner wall of the hinge hole 150 after fine grinding, provided the hinge shaft assembly is installed vertically. Removing the hinge shaft assembly facilitates cleaning of both the assembly and the hinge hole 150, reducing grinding debris residue and facilitating subsequent verification.

[0077] In one specific embodiment, before the second plane 120 is precision ground, the manufacturing method further includes the following steps: inspecting the inner diameter of the hinge hole 150; if the hinge hole 150 error condition is met, then installing the hinge shaft assembly on the compressor piston side to the hinge hole 150.

[0078] It should be noted that after the inner diameter of the hinge hole 150 is inspected and meets the error conditions, on the one hand, the transmission between the hinge hole 150 and the hinge shaft assembly on the compressor piston side will be smoother, avoiding damage due to friction; on the other hand, only when the perpendicularity between the side wall of the hinge hole 150 and the second plane 120 before fine grinding meets the requirements can the hinge shaft assembly play an effective positioning role after mating, becoming a reference for perpendicularity, and better ensuring the flatness of the second plane 120 after fine grinding and its perpendicularity relative to the hinge hole 150.

[0079] In one specific embodiment, the compressor vane 100 is obtained by inspecting, edge-processing and cleaning the surface of the vane body. Specifically, the following steps are included: detecting the perpendicularity of the side of the hinge portion to the second plane 120. If the perpendicularity condition is met, the edges of the vane body are ground and the vane body is cleaned to obtain the compressor vane 100.

[0080] It should be noted that once the perpendicularity of the side of the hinge to the second plane 120 meets the requirements, it can be used. At this time, grinding the edge can make it easier to install the hinge shaft assembly or hinge hole assembly on the side of the compressor piston during actual use, and avoid wear on the side of the compressor piston.

[0081] Preferably, after cleaning the vane body, the compressor vane 100 is subjected to rust prevention treatment to improve the service life of the compressor vane 100.

[0082] In a specific embodiment, after obtaining the hinge portion, the manufacturing method further includes the following steps: grinding the first plane 110; wherein, inspecting the surface of the slide body, treating the edges and cleaning it to obtain the compressor slide 100 specifically includes the following steps: detecting the perpendicularity between the first plane 110 and the second plane 120, and if the perpendicularity condition is met, grinding the edges of the slide body and cleaning the slide body to obtain the compressor slide 100.

[0083] It should be noted that once the perpendicularity between the first plane 110 and the second plane 120 meets the requirements, it can be installed into the compressor cylinder body to achieve radial sliding and transmission. At this time, grinding the edges can make it easier to install into the corresponding sliding vane groove of the compressor cylinder body during actual use, avoiding wear on the edge of the sliding vane groove.

[0084] Specifically, grinding the edges of the vane body includes grinding the edges at the junction of the first plane 110 and the second plane 120 to facilitate the assembly of the compressor vane 100 and the compressor cylinder.

[0085] When the hinge part is the hinge shaft 130, grinding the edge of the slide body also includes grinding the edge of the hinge shaft 130 and the end of the snap groove 141 corresponding to the second plane 120, so as to avoid wear when the hinge hole assembly on the compressor piston side mates with the hinge shaft 130.

[0086] When the hinge part is the hinge hole 150, grinding the edge of the slide body also includes grinding the hinge hole 150, the snap opening 151 and the edge of the outer plane of the snap opening 151 corresponding to the second plane 120, so as to avoid wear when the hinge shaft assembly on the compressor piston side is engaged with the hinge hole 150.

[0087] In one specific embodiment, at least one wire cutting is performed according to the target trajectory of the hinge, specifically including the following steps: wire cutting rough machining is performed according to the target trajectory of the hinge, and wire cutting fine machining is performed in reverse according to the target trajectory of the hinge, wherein the machining allowance of the wire cutting fine machining is 0.045mm to 0.05mm.

[0088] It should be noted that retaining this machining allowance during wire EDM roughing allows for rapid approach to the target size and removal of waste, reducing the number of finishing operations and improving efficiency. Furthermore, the wire EDM roughing process provides sufficient cutting depth, improving accuracy while preventing damage to the electrode wire. Wire EDM finishing is performed in the opposite direction, reducing the movement path of the molybdenum wire and improving cutting efficiency.

[0089] Optionally, wire EDM roughing can be performed multiple times, with the target trajectory of wire EDM alternating in opposite directions.

[0090] Specifically, when the hinge part is the hinge shaft 130, the diameter of the hinge shaft 130 is machined to 2.6mm to 3.6mm and the thickness of the snap-fit ​​part 140 is machined to 1.6mm to 2.6mm through wire cutting rough machining; then, the diameter of the hinge shaft 130 is machined to 2.5mm to 3.5mm and the thickness of the snap-fit ​​part 140 is machined to 1.5mm to 2.5mm through wire cutting fine machining.

[0091] Specifically, when the hinge part is a hinge hole 150, the diameter of the hinge hole 150 is machined to 1.4mm to 2.4mm by wire cutting rough machining, and the distance from the axis of the hinge hole 150 to the outer plane of the snap-fit ​​opening 151 is machined to 0.3mm to 0.8mm; then, the diameter of the hinge hole 150 is machined to 1.5mm to 2.5mm by wire cutting fine machining, and the distance from the axis of the hinge hole 150 to the outer plane of the snap-fit ​​opening 151 is machined to 0.25mm to 0.75mm.

[0092] In one specific embodiment, after obtaining the hinge by performing at least one wire cut according to the target trajectory of the hinge, the manufacturing method further includes: chamfering the hinge.

[0093] Specifically, when the hinge part is the hinge shaft 130, a first chamfer is formed between the hinge shaft 130 and the bottom surface of the snap-fit ​​part 140, a second chamfer is formed at the end of the bottom surface of the snap-fit ​​part 140 away from the hinge shaft 130, and a third chamfer is formed between the inclined surface of the snap-fit ​​part 140 and the first plane 110. The radius of the first chamfer is smaller than the radii of the second and third chamfers, facilitating the positioning of the first chamfer for snapping onto the hinge hole assembly on the compressor piston side. For example, the radius of the first chamfer is 0.2 mm, and the radii of the second and third chamfers are, for example, 0.3 mm.

[0094] Specifically, when the hinge part is the hinge hole 150, a fourth chamfer is formed at the snap-fit ​​opening 151, and a fifth chamfer is formed between the snap-fit ​​opening 151 and the first plane 110. The radii of the fourth and fifth chamfers are, for example, 0.1 mm.

[0095] Preferably, the chamfering is done with a brush.

[0096] In one specific embodiment, after the hinge portion is obtained by performing at least one wire cut according to the target trajectory of the hinge portion, the manufacturing method further includes: nitriding the slide body to improve the hardness and wear resistance of the hinge hole 150 / hinge shaft 130 and each chamfer, while enhancing corrosion resistance and fatigue resistance.

[0097] 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 compressor vanes, characterized in that, The compressor vane has a sliding surface that slides in connection with the compressor cylinder body, and a hinge portion for hinged connection of the compressor piston, for realizing eccentric rotation of the compressor piston and crankshaft to achieve air compression. The manufacturing method includes: Prepare a slider body; the thickness of the slider body is 2.8 mm to 4.5 mm, and the slider body has a first plane for machining the sliding surface, and a second plane located at both ends of the hinge portion along the axial direction; The first plane is ground. The tool is fed from the first plane of the slider body, and at least one line cut is performed according to the target trajectory of the hinge to obtain the hinge, such that the diameter of the hinge is in the range of 1.5mm to 3.5mm. The second plane is then subjected to fine grinding. The compressor vane is obtained by inspecting, edge-removing, and cleaning the surface of the vane body. The hinge part is a hinge shaft, and the compressor vane includes a base and a snap-fit ​​part connecting the hinge shaft and the base. The snap-fit ​​part has snap-fit ​​grooves on both sides. The cutting process involves starting from the first plane of the slider body and performing at least one line cut according to the target trajectory of the hinge portion, specifically including the following steps: The cutter enters from the first plane of the slide body and performs at least one wire cut along the target trajectory formed by the snap-fit ​​groove, the outer wall of the hinge shaft, and the snap-fit ​​groove on the other side.

2. The manufacturing method according to claim 1, characterized in that, The diameter of the hinge shaft ranges from 2.5 mm to 3.5 mm; the thickness of the snap-fit ​​portion ranges from 1.5 mm to 2.5 mm.

3. A method for manufacturing compressor vanes, characterized in that, The compressor vane has a sliding surface that slides in connection with the compressor cylinder body, and a hinge portion for hinged connection of the compressor piston, for realizing eccentric rotation of the compressor piston and crankshaft to achieve air compression. The manufacturing method includes: Prepare a slider body; the thickness of the slider body is 2.8 mm to 4.5 mm, and the slider body has a first plane for machining the sliding surface, and a second plane located at both ends of the hinge portion along the axial direction; The first plane is ground. The tool is fed from the first plane of the slider body, and at least one line cut is performed according to the target trajectory of the hinge to obtain the hinge, such that the diameter of the hinge is in the range of 1.5mm to 3.5mm. The second plane is then subjected to fine grinding. The compressor vane is obtained by inspecting, edge-removing, and cleaning the surface of the vane body. The hinge portion consists of a hinge hole and a snap-fit ​​opening that connects to the hinge hole. The cutting process involves starting from the first plane of the slider body and performing at least one line cut according to the target trajectory of the hinge portion, specifically including the following steps: The cutting tool enters from the first plane of the slider body and performs at least one wire cut along the target trajectory formed by the outer plane of the snap-fit ​​opening, the snap-fit ​​opening, the inner wall of the hinge hole, the other side of the snap-fit ​​opening, and the other side of the outer plane of the snap-fit ​​opening.

4. The manufacturing method according to claim 3, characterized in that, The diameter of the hinge hole ranges from 1.5 mm to 2.5 mm; the distance from the axis of the hinge hole to the outer plane of the snap-fit ​​opening is from 0.25 mm to 0.75 mm.

5. The manufacturing method according to claim 3, characterized in that, The second plane is subjected to fine grinding, specifically including the following steps: Install the hinge shaft assembly on one side of the compressor piston into the hinge hole, perform fine grinding on the second plane, and then disassemble the hinge shaft assembly.

6. The manufacturing method according to claim 5, characterized in that, Before the second plane is precision ground, the manufacturing method further includes the following steps: The inner diameter of the hinge hole is inspected. If the hinge hole error condition is met, the hinge shaft assembly on the piston side of the compressor is installed into the hinge hole.

7. The manufacturing method according to claim 1 or 3, characterized in that, The compressor vane is obtained by inspecting, edge-processing, and cleaning the surface of the vane body. Specifically, this includes the following steps: The perpendicularity of the side of the hinge portion to the second plane is detected. If the perpendicularity condition is met, the edges of the slide body are ground and the slide body is cleaned to obtain the compressor slide.

8. The manufacturing method according to claim 1 or 3, characterized in that, After obtaining the hinge portion, the manufacturing method further includes the following steps: The first plane is ground. The process of inspecting, edge-processing, and cleaning the surface of the vane body to obtain the compressor vane specifically includes the following steps: The perpendicularity between the first plane and the second plane is detected. If the perpendicularity condition is met, the edges of the slide body are ground and the slide body is cleaned to obtain the compressor slide.

9. The manufacturing method according to claim 1 or 3, characterized in that, The step of performing at least one line cut based on the target trajectory of the hinge portion specifically includes the following steps: The roughing process is performed by wire cutting based on the target trajectory of the hinge, and the finishing process is performed by wire cutting in the reverse direction based on the target trajectory of the hinge. The machining allowance for the finishing process is 0.045mm to 0.05mm.

Images