Rear cover milling machine fixture
By designing a milling machine fixture for the rear cover, and utilizing the cooperation of positioning pins and positioning plates, precise positioning and uniform clamping of the rear cover of the automotive air conditioning compressor are achieved. This solves the problems of warping and the inapplicability of vacuum chucks in the processing of aluminum die castings, improves processing accuracy and efficiency, and reduces costs.
Patent Information
- Application Number
- CN202520857205.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-04-30
AI Technical Summary
The draft angle of the side wall of the aluminum die casting causes it to lift up during clamping, affecting the flatness and parallelism of the machining. The vacuum chuck is not effective when clamping on the rear cover of a specially structured automotive air conditioning compressor, making it difficult to meet the machining requirements.
A milling fixture for a rear cover was designed. It uses a positioning column and a positioning plate to cooperate. The cylinder drives the push plate to drive the large flat-head hexagonal screw to squeeze the silicone head, so as to achieve precise positioning and uniform clamping of the rear cover of the automotive air conditioning compressor. The clamping force is adjusted by adjusting the washers to adapt to different specifications of processing requirements.
It improves processing accuracy and efficiency, reduces production costs, prevents product displacement, enhances the applicability of tooling, and ensures processing quality.
Smart Images
Figure CN223848707U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fixture, specifically relates to rear cover milling machine fixture. BACKGROUND
[0002] Due to the structure characteristics of aluminum die casting, the side wall has a mold draft, and the use of bench clamp to clamp the tapered side wall can easily cause the workpiece to be warped during clamping, which cannot meet the flatness and parallelism requirements after the upper and lower end faces are machined. At the same time, the uneven pressure applied by the bench clamp can also easily cause the product to be deformed, affecting the size accuracy and appearance quality of the product, thereby reducing the product qualification rate and increasing the production cost. In addition, although the vacuum chuck clamping technology has certain advantages in part of the workpiece machining, it is not suitable for the rear cover of the air conditioner compressor for vehicles. Due to the special structure of the product, the air suction area is insufficient at the hollowed-out position, and the suction force generated is difficult to support the entire machining process.
[0003] Therefore, we propose a rear cover milling machine fixture. CONTENT OF THE UTILITY MODEL
[0004] The main purpose of the utility model is to provide a rear cover milling machine fixture, which can accurately position the rear cover of the air conditioner compressor for vehicles through the cooperation of the positioning column and the positioning plate, and the downward force generated during clamping makes the product adhere to the positioning plate, effectively ensuring the parallelism and flatness of the machining and improving the machining precision; the design of the tooling makes the same tooling available for machining the front and rear end faces of the rear cover of the air conditioner compressor for vehicles, reduces the tooling replacement frequency, improves the machining efficiency, and reduces the production cost; and the problems in the background art can be effectively solved.
[0005] To achieve the above purpose, the utility model adopts the technical scheme that:
[0006] The rear cover milling machine fixture comprises a positioning plate, a positioning column, a push plate, a support plate, a gas cylinder and a bottom plate, the bottom plate is fixedly connected with two support plates arranged in parallel on the upper end face, a gas cylinder is fixedly installed at the center of the upper end face of the bottom plate, positioning columns are arranged between the gas cylinder and the support plates, the positioning columns are arranged in parallel, a push plate is jointly arranged on the top ends of the two positioning columns, the top end of the gas cylinder is fixedly connected with the center of the lower end face of the push plate, and the push plate is located between the two support plates.
[0007] The positioning plate is jointly installed on the top ends of the two support plates, a limiting groove for placing the rear cover of the air conditioner compressor for vehicles is arranged on the upper end face of the positioning plate, the rear cover of the air conditioner compressor for vehicles is connected with the positioning plate and the push plate through a large flat head inner hexagonal screw, and the top end of the positioning column is inserted into the lower end face of the positioning plate.
[0008] By adopting the technical scheme, the setting of the adjusting gasket can flexibly adjust the stroke of the push plate and the clamping pressure of the silica gel head on the rear cover of the vehicle air conditioner compressor, can adapt to the rear cover of the vehicle air conditioner compressor of different specifications and processing requirements, and enhances the applicability of the tooling; the clamping mode of the push plate driven by the air cylinder and the large flat head internal hexagonal screw extruding the silica gel head is stable and uniform in clamping force, can firmly clamp the product, avoids displacement of the product in the processing process, and ensures the processing quality.
[0009] Specifically, four groups of the large flat head internal hexagonal screws are arranged in parallel, and the silica gel head is sleeved on the upper part of the large flat head internal hexagonal screw.
[0010] Specifically, recesses for placing hexagonal thin nuts are arranged at four corners of the upper end surface of the push plate, and the hexagonal thin nuts are sleeved on the lower part of the large flat head internal hexagonal screw.
[0011] Specifically, the adjusting gasket in a circular ring structure is sleeved on the upper part of the positioning column, and two groups of the adjusting gaskets are arranged in parallel.
[0012] Specifically, the rear cover of the vehicle air conditioner compressor is provided with a through hole for the large flat head internal hexagonal screw to pass through.
[0013] The rear cover milling machine clamp has the advantages that: through cooperation of the positioning column and the positioning plate, the rear cover of the vehicle air conditioner compressor can be accurately positioned, and the downward force generated when clamping makes the product adhere to the positioning plate, thereby effectively ensuring the parallelism and flatness of processing and improving the processing precision; the tooling design makes the same tooling be used for processing the front and rear end surfaces of the rear cover of the vehicle air conditioner compressor, reduces the tooling replacement frequency, improves the processing efficiency, and reduces the production cost; the setting of the adjusting gasket can flexibly adjust the stroke of the push plate and the clamping pressure of the silica gel head on the rear cover of the vehicle air conditioner compressor, can adapt to the rear cover of the vehicle air conditioner compressor of different specifications and processing requirements, and enhances the applicability of the tooling; the clamping mode of the push plate driven by the air cylinder and the large flat head internal hexagonal screw extruding the silica gel head is stable and uniform in clamping force, can firmly clamp the product, avoids displacement of the product in the processing process, and ensures the processing quality. BRIEF DESCRIPTION OF DRAWINGS
[0014] The utility model is further explained in connection with the drawings and embodiments.
[0015] Fig. 1 It is the structural schematic diagram of the utility model;
[0016] Fig. 2 It is the internal structure schematic diagram of the push plate of the utility model;
[0017] Fig. 3 It is the perspective view of the utility model;
[0018] In the figure: 1, positioning plate; 2, positioning column; 3, push plate; 4, adjusting washer; 5, support plate; 6, air cylinder; 7, bottom plate; 8, silica gel head; 9, large flat head internal hexagonal screw; 10, hexagonal thin nut; 11, rear cover of vehicle air conditioner compressor. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.
[0020] As an embodiment of the utility model, as shown in the figure, Figs. 1-3 The rear cover milling machine clamp comprises a positioning plate 1, a positioning column 2, a push plate 3, a support plate 5, an air cylinder 6 and a bottom plate 7, the upper end surface of the bottom plate 7 is fixedly connected with two support plates 5 arranged in parallel, the air cylinder 6 is fixedly installed at the center of the upper end surface of the bottom plate 7, the positioning column 2 is arranged between the air cylinder 6 and the support plate 5, the two positioning columns 2 are arranged in parallel, the push plate 3 is jointly arranged at the top of the two positioning columns 2, the top of the air cylinder 6 is fixedly connected with the center of the lower end surface of the push plate 3, and the push plate 3 is located between the two support plates 5.
[0021] The top of the two support plates 5 is jointly provided with the positioning plate 1, the upper end surface of the positioning plate 1 is provided with a limiting groove for placing the rear cover 11 of the vehicle air conditioner compressor, the rear cover 11 of the vehicle air conditioner compressor is connected with the positioning plate 1 and the push plate 3 through the large flat head internal hexagonal screw 9, and the top of the positioning column 2 is inserted into the lower end surface of the positioning plate 1.
[0022] In use, the rear cover 11 of the vehicle air conditioner compressor is placed into the limiting groove on the positioning plate 1, when the push plate moves downward, the large flat head internal hexagonal screw 9 is pressed to extrude the silica gel head 8, the silica gel head 8 is deformed under stress to clamp the rear cover 11 of the vehicle air conditioner compressor, when the rear cover is pulled and clamped, a downward force is generated, so that the rear cover 11 of the vehicle air conditioner compressor is tightly attached to the positioning plate 1, the parallelism and flatness required in processing are ensured, the adjusting washer 4 arranged on the upper part of the positioning column 2 can flexibly adjust the stroke of the push plate 3 and the clamping pressure of the silica gel head 8 on the rear cover 11 of the vehicle air conditioner compressor.
[0023] The utility model also includes that the large flat head internal hexagonal screw 9 is relatively parallel and provided with four groups, and the silica gel head 8 is jointly arranged on the upper part of the large flat head internal hexagonal screw 9.
[0024] The utility model also includes that the push plate 3 is provided with recesses for placing the hexagonal thin nut 10 at the four corners of the upper end surface, and the hexagonal thin nut 10 is jointly arranged on the lower part of the large flat head internal hexagonal screw 9.
[0025] The utility model still includes, the adjusting washer 4 of circular ring structure is set on the upper part of the positioning column 2, two groups are established to the adjusting washer 4 relative parallel.
[0026] The utility model still includes, the through hole that is crossed to big flat head inner hexagonal screw 9 is equipped with on the rear cover 11 of vehicle air conditioning compressor.
[0027] The utility model is in use, place the rear cover 11 of vehicle air conditioning compressor to be located in the limiting groove on the positioning plate 1, the bottom end of big flat head inner hexagonal screw 9 that is set with silica gel head 8 is crossed in proper order the through -hole on the rear cover 11 of vehicle air conditioning compressor, the positioning plate 1 is connected with push plate 3, and is fastened through hexagonal thin type nut 10;
[0028] Cylinder 6 pushes and pulls push plate 3 and does vertical motion along positioning column 2, when push plate moves downward, drives big flat head inner hexagonal screw 9 to extrude silica gel head 8, and silica gel head 8 is deformed under stress and thus clamps the rear cover 11 of vehicle air conditioning compressor, because the downward force is produced when rear pull clamps, makes the rear cover 11 of vehicle air conditioning compressor closely fit positioning plate 1, guarantees the parallelism and flatness required when processing, and the adjusting washer 4 that is set on the upper part of positioning column 2 can flexibly adjust the stroke of push plate 3 and the clamping pressure of silica gel head 8 to the rear cover 11 of vehicle air conditioning compressor.
[0029] The basic principle, main features and advantages of the utility model are shown and described above. The technical personnel of the industry should understand that the utility model is not limited by the above embodiment, and the above-mentioned implementation and the description in the specification are only to illustrate the principle of the utility model, and the utility model will have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the attached claims and its equivalents.
Claims
1. A rear cover milling machine jig, characterized by, Including positioning plate (1), positioning column (2), push plate (3), support plate (5), cylinder (6) and bottom plate (7), the bottom plate (7) upper end surface fixedly connected with two parallel support plate (5), the bottom plate (7) upper end surface fixedly installed with cylinder (6) in the middle, the cylinder (6) and support plate (5) between being equipped with positioning column (2), the positioning column (2) is relatively parallel and two roots are provided, and the top of the two positioning columns (2) is commonly sleeved with the push plate (3), and the top of the cylinder (6) is fixedly connected with the lower end surface of the push plate (3) in the middle, and the push plate (3) is located between the two support plates (5); Two support plates (5) top are commonly installed with positioning plate (1), the positioning plate (1) upper end surface is equipped with the limiting groove for placing the car air conditioner compressor rear cover (11), the car air conditioner compressor rear cover (11) is connected with positioning plate (1) and push plate (3) through the large flat head internal hexagonal screw (9), and the positioning column (2) top is inserted in the lower end surface of the positioning plate (1).
2. The rear cover milling machine jig according to claim 1, wherein The large flat head internal hexagonal screw (9) is relatively parallel and provided with four groups, and the large flat head internal hexagonal screw (9) upper portion is sleeved with silica gel head (8).
3. The rear cover milling machine jig according to claim 1, wherein The push plate (3) upper end surface four corners are all equipped with recess for placing hexagonal thin nut (10), and the hexagonal thin nut (10) is sleeved in the lower part of the large flat head internal hexagonal screw (9).
4. The rear cover milling machine jig according to claim 1, wherein The positioning column (2) upper portion is sleeved with the adjusting washer (4) of circular ring structure, and the adjusting washer (4) is relatively parallel and provided with two groups.
5. The rear cover milling machine jig according to claim 1, wherein The car air conditioner compressor rear cover (11) is provided with through hole for the large flat head internal hexagonal screw (9) to pass through.