Machining auxiliary tool for compressor piston

Abstract

The utility model provides an auxiliary tool for processing a compressor piston, which comprises a charging tray, fixing strips and fixing screws, a plurality of positioning holes arranged in rows and columns are arranged on the charging tray, and fixing holes are respectively arranged at two ends of the plurality of positioning holes in each row; the two ends of the fixing strip are connected with the charging tray through fixing screws, a plurality of positioning grooves and two fixing grooves are formed in the fixing strip, the positioning grooves correspond to the positioning holes in each row in a one-to-one mode, the two fixing grooves correspond to the fixing holes in the two ends of the positioning holes in each row respectively, and the fixing screws penetrate through the corresponding fixing grooves and are in threaded connection with the corresponding fixing holes; the structure of the positioning hole and the structure of the positioning groove are matched with the structure of the compressor piston. The auxiliary tool is applied to the machining process of the compressor piston, a large number of compressor piston products can be clamped at the same time, the procedures of cleaning, surface treatment, dip-coating, sintering and the like of the large number of products can be conveniently carried out, and the machining efficiency and the product quality of the compressor piston are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor piston manufacturing, in particular to a processing auxiliary tool for a compressor piston. Background Art

[0002] The automotive air conditioning compressor is the heart of the vehicle's refrigeration system, compressing and transporting refrigerant vapor. Based on their operating principles, automotive air conditioning compressors can be categorized as fixed-displacement or variable-displacement compressors. Newer variable-displacement compressors are widely used because they automatically adjust the air outlet temperature to the set temperature. Common variable-displacement compressors use a drive shaft to rotate a swash plate, which in turn drives the piston in reciprocating motion. Gas compression is achieved through unidirectional control of intake and exhaust. As a critical component of variable-displacement compressors, the compressor piston significantly impacts the proper operation of the vehicle air conditioner.

[0003] Due to the frequent reciprocating motion of the piston, friction between the piston and the cylinder generates a large amount of heat, causing the piston temperature to rise sharply, which can easily lead to a significant reduction in the piston's wear resistance and shorten the piston's service life. Therefore, during piston processing, the piston needs to be surface treated, for example, by coating at least part of the piston surface with a wear-resistant and high-temperature resistant material. Currently, most piston surface treatment processes use spraying or roller coating to apply wear-resistant and high-temperature resistant materials to the piston surface. Each operation can only complete the surface coating of a single piston or a small batch of pistons. The coating efficiency and coating accuracy are low and need to be optimized. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a processing auxiliary tool for compressor pistons, which is convenient for batch processing of pistons and improves production efficiency and product quality.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A processing auxiliary tooling for a compressor piston, the processing auxiliary tooling for the compressor piston includes a material tray, a fixing bar and a fixing screw, the material tray is provided with a plurality of positioning holes arranged in rows and columns, and the two ends of the multiple positioning holes in each row are respectively provided with fixing holes; the two ends of the fixing bar are connected to the material tray through the fixing screws, the fixing bar is parallel to the material tray, and the fixing bar is provided with a plurality of positioning grooves and two fixing grooves, the plurality of positioning grooves correspond one-to-one to the plurality of positioning holes in each row, and the two fixing grooves correspond respectively to the fixing holes at both ends of each row of positioning holes, the fixing screws pass through the corresponding fixing grooves and are threadedly connected to the corresponding fixing holes; the structure of the positioning holes and the structure of the positioning grooves are respectively matched with the structure of the compressor piston.

[0007] Preferably, the positioning groove is an arc groove or a U-shaped groove.

[0008] Preferably, the fixing groove is a U-shaped groove, and the opening direction of the fixing groove is consistent with the opening direction of the positioning groove.

[0009] Preferably, the fixing holes include a first fixing hole and a second fixing hole spaced apart in the longitudinal direction, and the structures of the first fixing hole and the second fixing hole match the structures of the fixing slot and the fixing screw.

[0010] Preferably, the compressor piston includes a cylinder portion and a piston head, and the piston head includes a connecting portion, a first ball seat portion and a second ball seat portion, the first ball seat portion is located at an end of the connecting portion close to the cylinder portion, and the second ball seat portion is located at an end of the connecting portion away from the cylinder portion, and the first ball seat portion and the second ball seat portion are arranged opposite to each other; side protrusions are provided on both sides of the second ball seat portion; when the compressor piston is assembled to the auxiliary tooling, the back side of the connecting portion abuts against the wall of the positioning hole, the second ball seat portion corresponds to the positioning groove, and the side protrusions are hung on the fixing bars on both sides of the positioning groove.

[0011] Preferably, the compressor piston includes a main body and piston ends located at both ends of the main body and arranged opposite to each other, the piston ends are provided with piston columns, the piston columns at both ends are arranged opposite to each other, and limiting steps are provided at the connection between the piston ends and the side of the main body; when the compressor piston is assembled to the auxiliary tooling, the back side of the main body is against the hole wall of the positioning hole, the piston column is in the positioning groove, and the limiting steps on both sides are respectively hung on the fixing bars on both sides of the positioning groove.

[0012] Preferably, connecting columns extending in the longitudinal direction are provided on both sides of the body of the material tray, and the fixing holes pass through the body of the material tray and the connecting columns in a direction perpendicular to the material tray.

[0013] Preferably, a reinforcing column extending longitudinally is provided in the middle of the body of the material tray, and a matching hole is provided on the reinforcing column, and the matching hole corresponds to the fixing holes at both ends of each row of positioning holes, and the matching hole passes through the body of the material tray and the reinforcing column in a direction perpendicular to the material tray; the middle part of the fixing strip is connected to the material tray through a reinforcing screw, and a matching groove is provided in the middle part of the fixing strip, and the matching groove corresponds to the fixing grooves at both ends, and the reinforcing screw passes through the corresponding matching groove and is threadedly connected to the matching hole.

[0014] Preferably, the material tray is further provided with a plurality of mesh holes.

[0015] Preferably, the four corners of the tray are respectively provided with mounting holes.

[0016] Compared with the existing technology, the beneficial effects of the present invention are as follows: the auxiliary tooling of the present invention is applied in the processing of compressor pistons, and can clamp large quantities of compressor piston products at the same time, facilitating the cleaning, surface treatment, dipping, sintering and other processes of batch products, greatly improving the processing efficiency and product quality of compressor pistons. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of auxiliary tooling in some embodiments of the present utility model;

[0018] Figure 2 A schematic structural diagram of the auxiliary tooling of some embodiments of the present invention from another perspective;

[0019] Figure 3 Schematic diagram of the structure of the material tray in some embodiments of the present invention;

[0020] Figure 4 Schematic diagram of the structure of the fixing strip in some embodiments of the present invention;

[0021] Figure 5 This is a schematic structural diagram of a compressor piston in some embodiments of the present utility model;

[0022] Figure 6 This is a structural diagram of the compressor piston after being assembled to the auxiliary tooling in some embodiments of the present invention;

[0023] Figure 7 This is a structural schematic diagram from another perspective of the compressor piston after being assembled to the auxiliary tooling in some embodiments of the present invention;

[0024] Figure 8 Schematic diagram of the structure of the compressor piston of other embodiments of the present utility model;

[0025] Figure 9 This is a schematic structural diagram of the compressor piston after being assembled to the auxiliary tooling in other embodiments of the present invention.

[0026] In the figure, 10-material tray, 11-positioning hole, 12-fixing hole, 121-first fixing hole, 122-second fixing hole, 13-connecting column, 14-reinforcement column, 15-matching hole, 16-mesh, 17-mounting hole, 20-fixing bar, 21-positioning groove, 22-fixing groove, 23-matching groove, 30-fixing screw, 40-hollow piston, 41-cylinder body, 42-piston head, 421-connecting part, 422-first ball seat part, 423-second ball seat part, 424-side protrusion, 50-solid piston, 51-main body, 52-piston end, 53-piston column, 54-limiting step, 60-reinforcement screw. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described 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. It is understood that, in the absence of conflict, some technical means of the various embodiments described herein can be replaced or combined with each other.

[0028] In the description of this utility model, the terms "first," "second," etc., if used, are used solely to distinguish the objects being described and do not convey any order or technical meaning. Therefore, an object defined as "first," "second," etc. may explicitly or implicitly include one or more of such objects. Furthermore, "a," "an," and similar terms do not imply a limitation on quantity, but rather indicate the presence of at least one, and "plurality" means at least two.

[0029] In the description of this utility model specification, reference to "one embodiment" or "some embodiments" means that one or more embodiments of the utility model include a particular feature, structure or characteristic described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments", unless otherwise specifically emphasized.

[0030] The utility model provides a processing auxiliary tool for a compressor piston, referring to Figures 1 to 4 In some embodiments, the auxiliary tooling for machining the compressor piston includes a material tray 10, a fixing bar 20, and a fixing screw 30. The material tray 10 is provided with a plurality of positioning holes 11 arranged in rows and columns. Each row of the plurality of positioning holes 11 has a fixing hole 12 at both ends, and the fixing hole 12 has an internal thread. Figure 3 Each row of positioning holes 11 is arranged horizontally, and each column of positioning holes 11 is arranged vertically. Each row of positioning holes 11 corresponds to a fixing bar 20, and both ends of the fixing bar 20 are connected to the material tray 10 via fixing screws 30. The fixing bar 20 is parallel to the material tray 10 and is provided with multiple positioning slots 21 and two fixing slots 22. The multiple positioning slots 21 correspond one-to-one with the multiple positioning holes 11 in each row, and the two fixing slots 22 correspond to the fixing holes 12 at both ends of each row of positioning holes 11. The fixing screws 30 pass through the corresponding fixing slots 22 and are threadedly connected to the corresponding fixing holes 12. The structures of the positioning holes 11 and the positioning slots 21 respectively match those of the compressor piston.

[0031] It should be noted that the number (rows and columns) of positioning holes 11 can be appropriately set based on actual needs. During use, the compressor piston is installed in the positioning hole 11, positioned using the fixing bar 20, and fixedly connected to the tray 10 using the fixing screw 30, thereby securing the compressor piston. This allows the tray 10 to simultaneously hold large quantities of compressor pistons, facilitating cleaning, surface treatment, dip coating, sintering, and other processes for batch production, significantly improving compressor piston processing efficiency and product quality.

[0032] In some preferred embodiments, the positioning groove 21 is an arc groove or a U-shaped groove. Figure 4 As shown, in some embodiments, the positioning groove 21 is an arc-shaped groove. Of course, the present invention is not limited to this. In other embodiments, the structure of the positioning groove 21 can be matched and designed according to the specific structure of the compressor piston, as long as it can achieve the positioning and fixing function of the compressor piston.

[0033] Furthermore, the fixing groove 22 is a U-shaped groove, and the opening direction of the fixing groove 22 is consistent with the opening direction of the positioning groove 21. In this way, the fixing position of the fixing strip 20 on the tray 10 can be appropriately adjusted according to the size of the compressor piston.

[0034] Reference Figure 3 The fixing hole 12 includes a first fixing hole 121 and a second fixing hole 122 that are longitudinally spaced apart. The first fixing hole 121 and the second fixing hole 122 are respectively provided with internal threads. The structures of the first fixing hole 121 and the second fixing hole 122 match the structures of the fixing groove 22 and the fixing screw 30. The fixing groove 22 is designed as a U-shaped groove. In conjunction with the design of the first fixing hole 121 and the second fixing hole 122, the fixing position of the fixing strip 20 on the tray 10 can be appropriately adjusted according to the size of the compressor piston, thereby improving the adaptability of the auxiliary tooling. In some embodiments, the first fixing hole 121 is used for clamping and fixing the hollow piston. The specific operation is: the hollow piston is installed in the positioning hole 11, the fixing strip 20 is used to position the hollow piston, and the fixing screw 30 passes through the fixing groove 22 and is threadedly connected to the first fixing hole 121, thereby fixing the hollow piston. In other embodiments, the second fixing hole 122 is used for clamping and fixing the solid piston. The specific operation is: the solid piston is installed in the positioning hole 11, the solid piston is positioned using the fixing bar 20, and the fixing screw 30 passes through the fixing groove 22 and is threadedly connected to the second fixing hole 122, thereby fixing the solid piston.

[0035] The specific structures and clamping and matching structures of the hollow piston and the solid piston are further described below.

[0036] Reference Figure 5The compressor piston is a hollow piston 40, which includes a cylinder portion 41 and a piston head 42. The piston head 42 includes a connecting portion 421, a first ball seat portion 422 and a second ball seat portion 423. The first ball seat portion 422 is located at one end of the connecting portion 421 close to the cylinder portion 41, and the second ball seat portion 423 is located at one end of the connecting portion 421 away from the cylinder portion 41. The first ball seat portion 422 and the second ball seat portion 423 are arranged opposite to each other; side protrusions 424 are provided on both sides of the second ball seat portion 423. It should be understood that the positioning hole 11 should be configured to allow the hollow piston 40 to pass through it, and the positioning groove 21 should be configured to accommodate the second ball seat portion 423. Figures 5 to 7 During clamping, the hollow piston 40 is inserted into the positioning hole 11 and positioned using the fixing bar 20. The fixing screw 30 passes through the fixing groove 22 and is threadedly connected to the first fixing hole 121, thereby securing the hollow piston 40. When the compressor piston is assembled to the auxiliary fixture, the back surface of the connecting portion 421 (the side of the connecting portion 421 facing away from the first ball seat portion 422 and the second ball seat portion 423, which is a curved side surface) abuts the wall of the positioning hole 11. The second ball seat portion 423 corresponds to the positioning groove 21, and the side protrusions 424 are attached to the fixing bars 20 on both sides of the positioning groove 21. This auxiliary fixture can simultaneously clamp large quantities of compressor piston products, facilitating cleaning, surface treatment, dip coating, sintering, and other processes for batch products, greatly improving the processing efficiency and product quality of compressor pistons.

[0037] Reference Figure 8 In other embodiments, the compressor piston is a solid piston 50, which includes a main body 51 and piston ends 52 located at opposite ends of the main body 51. The piston ends 52 are provided with piston columns 53, and the piston columns 53 at both ends are oppositely arranged. A limiting step 54 is provided at the connection between the piston ends 52 and the side of the main body 51. It should be understood that the positioning hole 11 should be configured to allow the solid piston 50 to pass through it, and the positioning groove 21 should be configured to accommodate the piston column 53. Figure 8 and Figure 9 During clamping, the solid piston 50 is inserted into the positioning hole 11, and the solid piston 50 is positioned using the fixing strip 20. The fixing screw 30 passes through the fixing groove 22 and is threadedly connected to the second fixing hole 122, thereby fixing the solid piston 50. When the compressor piston is assembled to the auxiliary fixture, the back side of the main body 51 (the side of the main body 51 facing away from the piston column 53, which is an arc-shaped side) abuts against the hole wall of the positioning hole 11, the piston column 53 is in the positioning groove 21, and the limiting steps 54 on both sides are respectively hung on the fixing strips 20 on both sides of the positioning groove 21. This auxiliary fixture can clamp large quantities of compressor piston products at the same time, facilitating the cleaning, surface treatment, dipping, sintering and other processes of batch products, greatly improving the processing efficiency and product quality of compressor pistons.

[0038] Reference Figure 2 In some preferred embodiments, connecting posts 13 extending longitudinally are provided on both sides of the body of the tray 10, and fixing holes 12 pass through the body of the tray 10 and the connecting posts 13 in a direction perpendicular to the tray 10. The connecting posts 13 and the body of the tray 10 can be integrally formed or welded together, and the thickness of the connecting posts 13 is greater than the thickness of the body of the tray 10. This allows for a larger contact area between the fixing screws 30 and the fixing holes 12 when the fixing bar 20 is fixedly connected to the tray 10, thereby enhancing the strength and stability of the connection between the fixing bar 20 and the tray 10.

[0039] Further, combined with Figure 2 and Figure 4 , a reinforcing column 14 extending longitudinally is provided in the middle of the body of the material tray 10, and a matching hole 15 is provided on the reinforcing column 14. The matching holes 15 correspond to the fixing holes 12 at both ends of each row of positioning holes 11, and the matching holes 15 pass through the body of the material tray 10 and the reinforcing column 14 in a direction perpendicular to the material tray 10; the middle of the fixing bar 20 is connected to the material tray 10 through a reinforcing screw 60, and a matching groove 23 is provided in the middle of the fixing bar 20. The matching groove 23 corresponds to the fixing grooves 22 at both ends, and the reinforcing screw 60 passes through the corresponding matching groove 23 and is threadedly connected to the matching hole 15. Among them, the matching groove 23 is a U-shaped groove, and the opening direction of the matching groove 23 is consistent with the opening direction of the fixing groove 22. Combined with reference Figure 3 The matching holes 15 include a first matching hole and a second matching hole spaced apart in the longitudinal direction. The first matching hole corresponds to the first fixing hole 121, and the second matching hole corresponds to the second fixing hole 122. When the fixing screw 30 is connected to the first fixing hole 121, the reinforcing screw 60 is connected to the first matching hole; when the fixing screw 30 is connected to the second fixing hole 122, the reinforcing screw 60 is connected to the second matching hole. The reinforcing column 14 and the body of the tray 10 can be connected in an integral molding manner or a welding manner. The thickness of the reinforcing column 14 is greater than the thickness of the body of the tray 10. The reinforcing screw 60 is connected to the matching holes 15 in a corresponding manner, which can enhance the connection strength and stability between the fixing bar 20 and the tray 10 and extend the service life of the auxiliary tooling.

[0040] Reference Figure 3 In some preferred embodiments, the tray 10 is further provided with a plurality of mesh holes 16. The number and position arrangement of the mesh holes 16 can be reasonably set according to actual needs. During processes such as cleaning and dip coating of the compressor piston, the mesh holes 16 can allow the process medium to pass through, thereby improving the process effect. In some other embodiments, the tray 10 can be cut from an existing stainless steel mesh plate. The mesh plate already has a plurality of mesh holes arranged in rows and columns. A plurality of positioning holes 11 arranged in rows and columns can be formed by cutting at set positions on the mesh plate. In this way, manufacturing costs can be effectively saved.

[0041] Reference Figure 3 In some preferred embodiments, mounting holes 17 are provided at the four corners of the tray 10. The mounting holes 17 are used to connect the tray 10 to a lifting device to facilitate operations such as cleaning and dipping of batch products.

[0042] In existing technologies, piston surface treatment processes often involve cleaning the pistons and then applying a wear-resistant and high-temperature resistant material to their surfaces via spraying or roller coating. However, the auxiliary fixture of the present invention can be used to clean and dip-coat large quantities of pistons, improving processing efficiency while also ensuring coating uniformity and precision, thereby enhancing product quality. For example, in some embodiments, the auxiliary fixture can simultaneously clamp hundreds of compressor pistons. After assembly, cleaning, surface silanization, gluing, dipping, and sintering are sequentially performed, significantly improving both processing efficiency and product precision.

[0043] To sum up, the utility model provides a processing auxiliary tooling for compressor pistons. The auxiliary tooling is used in the processing process of compressor pistons. It can clamp large quantities of compressor piston products at the same time, facilitate the cleaning, surface treatment, dipping, sintering and other processes of batch products, and greatly improve the processing efficiency and product quality of compressor pistons; in addition, the auxiliary tooling can adapt to the structures of hollow pistons and solid pistons, and has strong flexibility in use.

[0044] The present invention has been described with reference to the above embodiments. However, these embodiments are merely exemplary embodiments of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and improvements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A machining auxiliary tool for a compressor piston, characterized by: The processing auxiliary tooling of the compressor piston includes a material tray, a fixing bar and a fixing screw. The material tray is provided with a plurality of positioning holes arranged in rows and columns, and a fixing hole is provided at both ends of the multiple positioning holes in each row; the two ends of the fixing bar are connected to the material tray through the fixing screws, and the fixing bar is parallel to the material tray. The fixing bar is provided with a plurality of positioning grooves and two fixing grooves, and the plurality of positioning grooves correspond one-to-one to the plurality of positioning holes in each row, and the two fixing grooves correspond to the fixing holes at both ends of each row of positioning holes, respectively. The fixing screw passes through the corresponding fixing groove and is threadedly connected to the corresponding fixing hole; the structure of the positioning hole and the structure of the positioning groove are respectively matched with the structure of the compressor piston.

2. The auxiliary tooling for machining a compressor piston according to claim 1, characterized in that: The positioning groove is an arc groove or a U-shaped groove.

3. The auxiliary tooling for machining a compressor piston according to claim 2, characterized in that: The fixing groove is a U-shaped groove, and the opening direction of the fixing groove is consistent with the opening direction of the positioning groove.

4. The auxiliary tooling for machining a compressor piston according to claim 1, characterized in that: The fixing holes include a first fixing hole and a second fixing hole that are longitudinally spaced apart. The structures of the first fixing hole and the second fixing hole match the structures of the fixing slot and the fixing screw.

5. The auxiliary tooling for machining a compressor piston according to claim 1, characterized in that: The compressor piston includes a cylinder portion and a piston head, and the piston head includes a connecting portion, a first ball seat portion and a second ball seat portion, the first ball seat portion is located at an end of the connecting portion close to the cylinder portion, and the second ball seat portion is located at an end of the connecting portion away from the cylinder portion, and the first ball seat portion and the second ball seat portion are arranged opposite to each other; side protrusions are provided on both sides of the second ball seat portion; when the compressor piston is assembled to the auxiliary tooling, the back side of the connecting portion abuts against the hole wall of the positioning hole, the second ball seat portion corresponds to the positioning groove, and the side protrusions are hung on the fixing bars on both sides of the positioning groove.

6. The auxiliary tooling for machining a compressor piston according to claim 1, characterized in that: The compressor piston includes a main body and piston ends located at both ends of the main body and arranged opposite to each other, the piston ends are provided with piston columns, the piston columns at both ends are arranged opposite to each other, and limiting steps are provided at the connection between the piston ends and the side of the main body; when the compressor piston is assembled to the auxiliary tooling, the back side of the main body is against the hole wall of the positioning hole, the piston column is in the positioning groove, and the limiting steps on both sides are respectively hung on the fixing bars on both sides of the positioning groove.

7. The auxiliary tooling for machining a compressor piston according to claim 1, characterized in that: Connecting columns extending in the longitudinal direction are provided on both sides of the body of the material tray, and the fixing holes penetrate the body of the material tray and the connecting columns in a direction perpendicular to the material tray.

8. The auxiliary tooling for machining a compressor piston according to claim 7, characterized in that: A reinforcing column extending longitudinally is provided in the middle of the body of the material tray, and a matching hole is provided on the reinforcing column, and the matching holes correspond to the fixing holes at both ends of each row of positioning holes, and the matching holes pass through the body of the material tray and the reinforcing column in a direction perpendicular to the material tray; the middle part of the fixing strip is connected to the material tray through a reinforcing screw, and a matching groove is provided in the middle of the fixing strip, and the matching groove corresponds to the fixing grooves at both ends, and the reinforcing screw passes through the corresponding matching groove and is threadedly connected to the matching hole.

9. The auxiliary tooling for machining a compressor piston according to claim 1, characterized in that: The material tray is also provided with a plurality of mesh holes.

10. The auxiliary tooling for machining a compressor piston according to claim 1, characterized in that: The four corners of the material tray are respectively provided with mounting holes.

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