Clamp for machining tail end of air conditioner compressor shell
By designing a fixture for the air-conditioning compressor housing, the combination of the swelling fixture and the compression mechanism is used to solve the problem of stable clamping of the shell during processing, the high-precision positioning and fixing of the shell is achieved, and the processing is improved Pass rate.
Patent Information
- Application Number
- CN202323654851.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-31
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-31
AI Technical Summary
The air conditioning compressor housing needs to be precise and stable clamped after die casting to meet the high dimensional requirements, but the prior art is difficult to achieve effective clamping, resulting in the problem of excessive single-side machining and inconsistent size.
A fixture including a base plate, a swell fixture, a base and a compression mechanism is designed. The housing is made by using components such as positioning pins, main support blocks, auxiliary support blocks, lever cylinders and sealing rings. Perform internal clamping and compression to ensure stable positioning and fixation of the shell.
It improves the stability and pass rate of the shell during processing, avoids jitter, and achieves fast and accurate housing placement and fixation, meeting the high-precision dimensional requirements.
Smart Images
Figure CN222269976U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of die casting, in particular to a clamp used for processing the tail end of an air-conditioning compressor housing. Background Art
[0002] After die-casting of the air-conditioning compressor housing, a processing reserve will be reserved for machining the blank after die-casting to meet the size requirements. However, the air-conditioning compressor housing has high size requirements and needs to be clamped accurately and stably. Otherwise, one side will be over-processed and fail to meet the size requirements. Utility Model Content
[0003] In view of the defects of the above-mentioned prior art, the main purpose of the utility model is to overcome the shortcomings of the prior art and discloses a fixture for processing the tail end of the air-conditioning compressor housing, including a base plate, an expansion sleeve fixture, a base and a clamping mechanism. The base is arranged on the base plate, and the expansion sleeve fixture is arranged on the base. The housing is internally expanded and clamped by the expansion sleeve fixture. Two positioning pins are arranged on the base, and the positioning pins correspond to the holes on the housing. The housing is positioned by the positioning pins; the clamping mechanism presses the housing onto the base.
[0004] Furthermore, the clamping mechanism includes three groups of lever cylinders.
[0005] Furthermore, three main support blocks and three auxiliary support blocks are arranged on the base, and the main support blocks and the auxiliary support blocks are alternately and evenly spaced and distributed in the circumference of the expansion clamp.
[0006] Furthermore, the top of the main supporting block is 5 μm higher than the top of the auxiliary supporting block.
[0007] Furthermore, the expansion sleeve fixture includes an oil cylinder, a cone sleeve body, a positioning block, an expansion sleeve tray, an expansion sleeve and a pull rod. The cone sleeve body is arranged on the base, the positioning block is sleeved on the cone sleeve body, the inner cavity of the shell is positioned by the positioning block, the expansion sleeve is sleeved on the cone sleeve body through the expansion sleeve tray, the expansion sleeve cooperates with the inclined surface of the cone sleeve body, the pull rod passes through the cone sleeve body and is connected to the oil cylinder, the pull rod acts on the expansion sleeve, and the oil cylinder is used to drive the pull rod to be pulled down to drive the expansion sleeve to expand outward.
[0008] Furthermore, a sealing ring is arranged between the expansion sleeve and the positioning block.
[0009] Furthermore, two groups of positioning components are included, and the positioning components are arranged on both sides of the expansion sleeve fixture to pre-position the shell.
[0010] Furthermore, the positioning assembly includes a bracket and a material guide block, the material guide block is arranged on the bottom plate through the bracket, positioning parts are arranged on both sides of the material guide block, and a positioning area that cooperates with the characteristic part of the shell side wall is formed between the two positioning parts.
[0011] Furthermore, the material guide block is made of nylon.
[0012] Beneficial effects achieved by the utility model:
[0013] The utility model clamps and fixes the upper and lower ends of the shell by cooperating with the expansion clamp and the clamping mechanism, thereby ensuring the stability of the shell clamping and preventing the shell from shaking during processing; thus greatly improving the qualified rate of product processing. A positioning block is provided on the expansion clamp to guide and position the shell when it is placed, and at the same time cooperates with two positioning pins provided on the base to precisely position the shell to ensure that the shell is placed in place. The positioning components provided on both sides use the characteristic parts of the outer wall of the shell for auxiliary positioning, so as to facilitate the rapid and accurate placement of the shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the structure of the shell;
[0015] Figure 2 A three-dimensional structural schematic diagram of a fixture for processing the tail end of an air-conditioning compressor housing according to the utility model;
[0016] Figure 3 The figure is a schematic diagram of the cooperation between the expansion sleeve fixture and the base;
[0017] Figure 4 for Figure 3 A top view of
[0018] Figure 5 for Figure 4 Middle AA section view;
[0019] Figure 6 This is a schematic diagram of the use state of a fixture for processing the tail end of an air-conditioning compressor housing according to the utility model;
[0020] The reference numerals are as follows:
[0021] 1. Bottom plate, 2. Expanding sleeve fixture, 3. Base, 4. Clamping mechanism, 5. Positioning assembly, 6. Positioning pin, 21. Cylinder, 22. Cone sleeve body, 23. Positioning block, 24. Expanding sleeve tray, 25. Expanding sleeve, 26. Pull rod, 27. Sealing ring, 31. Main support block, 32. Auxiliary support block, 51. Bracket, 52. Guide block, 521. Positioning part, 522. Positioning area. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0023] like Figure 1 As shown in the structural diagram of the shell, before the end surface of the shell is processed, the opening and inner wall at the other end of the shell are processed in size. Therefore, the inner hole at the end of the shell is a standard hole. The utility model mainly uses the end hole, the inner wall and the hole at the opening for positioning. Specifically:
[0024] A fixture for processing the tail end of an air-conditioning compressor housing, such as Figure 1-Figure 6 As shown, it includes a bottom plate 1, an expansion clamp 2, a base 3 and a clamping mechanism 4. The base 3 is arranged on the bottom plate 1, the expansion clamp 2 is arranged on the base 3, and the shell is clamped by the expansion clamp 2. Two positioning pins 6 are arranged on the base 3, and the positioning pins 6 correspond to the holes on the shell. The shell is positioned by the positioning pins 6; the clamping mechanism 4 presses the shell on the base 3. Two positioning pins 6 are used to improve the positioning accuracy of the shell on the base 3. Preferably, the positioning pins 6 are diamond pins.
[0025] In one embodiment, if Figure 1-Figure 6 As shown, the clamping mechanism 4 includes three groups of lever cylinders. After the housing is positioned, the housing is pressed against the base 3 by the lever cylinder to ensure the stability of the housing clamping. The lever cylinder is used to prevent the pressure block of the cylinder from affecting the placement of the housing when the clamping mechanism 4 is opened.
[0026] In one embodiment, if Figure 1-Figure 6 As shown, three main support blocks 31 and three auxiliary support blocks 32 are arranged on the base 3, and the main support blocks 31 and the auxiliary support blocks 32 are arranged alternately and evenly spaced in the circumference of the expansion clamp 2. A total of six main support blocks 31 and auxiliary support blocks 32 are arranged to achieve stable support for the end surface of the shell.
[0027] In the above embodiment, if Figure 1-Figure 6 As shown, the top of the main support block 31 is 5 μm higher than the top of the auxiliary support block 32. That is, the housing is actually in contact with the main support block 31, and the auxiliary support block 32 prevents the center of gravity of the housing from deviating to one side and causing the housing to tilt. Among them, the points where the three lever cylinders act on the housing correspond to the main support block 31.
[0028] In one embodiment, if Figure 1-Figure 6As shown, the expansion sleeve fixture 2 includes a cylinder 21, a cone sleeve body 22, a positioning block 23, an expansion sleeve tray 24, an expansion sleeve 25 and a pull rod 26. The cone sleeve body 22 is arranged on the base 3, and the positioning block 23 is sleeved on the cone sleeve body 22. The outer wall of the positioning block 23 is matched with the inner cavity gap of the shell to realize the pre-positioning of the shell. An inclined surface is provided on the cone sleeve body 22, and the expansion sleeve 25 is arranged on the cone sleeve body 22 through an expansion sleeve tray. The expansion sleeve 25 cooperates with the inclined surface of the cone sleeve body 22, and a through hole is axially provided in the cone sleeve body 22. The pull rod 26 passes through the cone sleeve body 22 and is connected to the cylinder 21. The upper end of the pull rod 26 acts on the upper surface of the expansion sleeve 25. After the shell is placed on the expansion sleeve fixture 2, the pull rod 26 is driven down by the cylinder 21 to apply downward pressure to the expansion sleeve 25. Because the expansion sleeve 25 cooperates with the inclined surface of the cone sleeve body 22, the expansion sleeve 25 will expand outward to tighten the hole at the end of the shell and achieve fixation.
[0029] In one embodiment, if Figure 1-Figure 6 As shown, a sealing ring 27 is provided between the expansion sleeve 25 and the positioning block 23. The sealing ring is used to prevent machining iron filings from entering the gap between the expansion sleeve 25 and the positioning block 23 and the gap of the expansion sleeve 25, thereby affecting the normal use of the expansion sleeve fixture 2.
[0030] In one embodiment, if Figure 1-Figure 6 As shown, in order to realize rapid and accurate placement of the shell, two groups of positioning components 5 are also included. The positioning components 5 are arranged on both sides of the expansion clamp 2 to pre-position the shell to determine the placement direction and position of the shell.
[0031] Specifically, Figure 1-Figure 6 As shown, the positioning assembly 5 includes a bracket 51 and a guide block 52. The guide block 52 is arranged on the bottom plate 1 through the bracket 51. Positioning portions 521 are arranged on both sides of the guide block 52. A positioning area 522 that cooperates with the characteristic portion of the shell side wall is formed between the two positioning portions 521.
[0032] In order to prevent the contact between the positioning block 52 and the housing from causing damage to the contact surface of the housing, the guide block 52 is made of nylon.
[0033] When the utility model is used, Figure 1-Figure 6 As shown, the housing is placed on the expansion clamp 2, and the positioning block 23 on the expansion clamp 2 is used to guide the positioning, and the hole at the lower end of the housing is aligned with the positioning pin 4 and inserted, and at the same time, the characteristic parts on both sides of the housing are placed in the positioning area 522, and the housing is pre-positioned together; then the expansion clamp 2 tightens the hole at the end of the housing, and finally the housing is pressed against the main support block 31 by the lever cylinder. The upper and lower ends of the housing are clamped and fixed by the expansion clamp 2 and the clamping mechanism 4, which effectively prevents the housing from shaking during processing.
[0034] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should be included in the scope of protection of the claims of the present invention.
Claims
1. A fixture for processing the tail end of an air-conditioning compressor housing, characterized in that: It includes a bottom plate, an expansion clamp, a base and a clamping mechanism, wherein the base is arranged on the bottom plate, the expansion clamp is arranged on the base, the shell is internally expanded and clamped by the expansion clamp, two positioning pins are arranged on the base, the positioning pins correspond to the holes on the shell, and the shell is positioned by the positioning pins; the clamping mechanism presses the shell onto the base.
2. A fixture for processing the rear end of an air-conditioning compressor housing according to claim 1, characterized in that: The clamping mechanism comprises three groups of lever cylinders.
3. The fixture for processing the rear end of an air-conditioning compressor housing according to claim 1, characterized in that: Three main support blocks and three auxiliary support blocks are arranged on the base, and the main support blocks and the auxiliary support blocks are alternately and evenly spaced and distributed in the circumference of the expansion clamp.
4. A fixture for processing the rear end of an air-conditioning compressor housing according to claim 3, characterized in that: The top of the main supporting block is 5 μm higher than the top of the auxiliary supporting block.
5. The fixture for processing the rear end of an air-conditioning compressor housing according to claim 1, characterized in that: The expansion sleeve fixture includes an oil cylinder, a cone sleeve body, a positioning block, an expansion sleeve tray, an expansion sleeve and a pull rod. The cone sleeve body is arranged on the base, the positioning block is sleeved on the cone sleeve body, the inner cavity of the shell is positioned by the positioning block, the expansion sleeve is sleeved on the cone sleeve body through the expansion sleeve tray, the expansion sleeve cooperates with the inclined surface of the cone sleeve body, the pull rod passes through the cone sleeve body and is connected to the oil cylinder, the pull rod acts on the expansion sleeve, and the oil cylinder is used to drive the pull rod to be pulled down to drive the expansion sleeve to expand outward.
6. A fixture for processing the rear end of an air-conditioning compressor housing according to claim 5, characterized in that: A sealing ring is arranged between the expansion sleeve and the positioning block.
7. The fixture for processing the rear end of an air-conditioning compressor housing according to claim 1, characterized in that: It also includes two groups of positioning components, which are arranged on both sides of the expansion sleeve fixture to pre-position the shell.
8. A fixture for processing the rear end of an air-conditioning compressor housing according to claim 7, characterized in that: The positioning assembly includes a bracket and a material guide block. The material guide block is arranged on the bottom plate through the bracket. Positioning parts are arranged on both sides of the material guide block. A positioning area that matches with the characteristic part of the shell side wall is formed between the two positioning parts.
9. A fixture for processing the rear end of an air-conditioning compressor housing according to claim 8, characterized in that: The material guide block is made of nylon.