Clamp for machining air conditioner compressor shell

Abstract

The utility model discloses a fixture for processing air condition compressor shell, including clamping mechanism, support mechanism, mounting plate, work piece seat and locating subassembly, mounting plate is provided on the clamping mechanism, work piece seat carries out support and coarse location to the shell, locating subassembly is provided in the circumferential direction of work piece seat, utilize the locating subassembly to calibrate the shell placement angle, and the locating subassembly is used for locating the shell. The supporting mechanism is arranged on the mounting plate, the outer wall of the opening end of the shell is supported through the supporting mechanism, and the outer wall of the other end of the shell is clamped through the clamping mechanism. The device is simple in structure, pre-positioning is carried out through the workpiece base and the positioning assembly, then clamping and fixing are carried out through the clamping assembly, and finally auxiliary supporting is carried out on a shell opening through the supporting mechanism, so that the situation of shaking during shell machining is prevented, excessive machining is avoided, the machining precision is effectively improved, and the product percent of pass is greatly improved. The clamping mechanism is matched with the shaft sleeve through the driving shaft to provide an installation space for the workpiece base.

Description

Technical Field

[0001] The utility model relates to the field of die casting, in particular to a clamp used for processing an air-conditioning compressor housing. Background Art

[0002] The air-conditioning compressor housing is a cup-shaped structure. After die-casting is completed, a processing schedule will be reserved for machining the die-cast blank to meet the size requirements. The existing fixture is usually a three-jaw chuck, which is difficult to effectively clamp and position the housing. If the positioning is inaccurate, the machined housing will often have problems such as reduced accuracy, dimensional deviation, and even scrapped parts, resulting in a waste of resources. In addition, because the air-conditioning compressor housing is relatively high, the upper side is an open structure, and there is no support, it is easy to cause deformation at the opening during turning, and the product size requirements cannot be met. 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 housing of an air-conditioning compressor, including a clamping mechanism, a supporting mechanism, a mounting plate, a workpiece seat and a positioning assembly. The mounting plate is arranged on the clamping mechanism, the workpiece seat supports and roughly positions the housing, the positioning assembly is arranged on the circumference of the workpiece seat, and the positioning assembly is used to calibrate the placement angle of the housing, the supporting mechanism is arranged on the mounting plate, and the supporting mechanism is used to support the outer wall of the open end of the housing, and the clamping mechanism is used to clamp the outer wall of the other end of the housing.

[0004] Furthermore, the clamping mechanism includes a machine base, a cylinder, a connecting piece and three groups of clamping assemblies. The clamping assembly is arranged on the machine base. The three groups of clamping assemblies are circumferentially distributed in the circumference of the workpiece base. The clamping assembly is connected to the cylinder through the connecting piece, and the connecting piece is driven by the cylinder to control the clamping assembly to move toward the outer shell.

[0005] Furthermore, the clamping assembly includes a driving rod, a sleeve, a slider and a pressure block. The middle of the driving rod is rotatably connected to the machine base via a rotating shaft, the sleeve is axially slidably arranged on the driving rod, and the sleeve is rotatably connected to the connecting piece; an adjustment block is extended from the upper end of the driving rod, an adjustment groove is arranged on the adjustment block, the slider is arranged in the adjustment groove, and the pressure block is connected to the slider via a screw; when locking, the screw is turned to clamp the slider and the adjustment groove.

[0006] Furthermore, the adjusting block is a square structure, and the pressing block is provided with a guide groove which cooperates with the adjusting block.

[0007] Furthermore, the workpiece seat comprises a seat body, on which a positioning block and three supporting protrusions are arranged, and the supporting protrusions are arranged around the positioning block.

[0008] Furthermore, the cross section of the positioning block is triangular.

[0009] Furthermore, the positioning assembly includes three groups of ball plungers, support blocks and clamping assemblies. The ball plungers are circumferentially arranged on the mounting plate around the workpiece seat through a bracket, and the three ball plungers are used to float clamp the outer wall of the outer shell; the support block and the clamping assembly act on the plane of the outer wall, and the clamping assembly is used to make the outer shell and the support block collide with each other.

[0010] Furthermore, the clamping assembly includes a fixed seat, a push block, a spring and a push rod, the fixed seat is set on the mounting plate, the push block is rotatably set on the fixed seat, the push rod is slidably set on the push block, the spring is installed on the push rod, the lower end of the push rod acts on the mounting plate, and the spring is used to drive the push block to rotate and clamp toward the outer shell.

[0011] Furthermore, the support mechanism includes three groups of brackets and support cylinders arranged on the brackets, and the brackets are arranged in a circular array in the circumferential direction of the workpiece seat.

[0012] Beneficial effects achieved by the utility model:

[0013] The utility model has a simple structure, and is pre-positioned by the workpiece seat and the positioning assembly, and then clamped and fixed by the clamping assembly, and finally the shell opening is supported by the supporting mechanism to prevent the shell from shaking during processing, avoid excessive processing, effectively improve the processing accuracy, and greatly improve the product qualification rate. The clamping mechanism cooperates with the drive shaft and the shaft sleeve to provide installation space for the workpiece seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a fixture for processing an air-conditioning compressor housing according to the utility model;

[0015] Figure 2 for Figure 1 A top view of

[0016] Figure 3 for Figure 2 AA section view;

[0017] Figure 4 It is a schematic diagram of the coordination of the clamping mechanism, the workpiece seat and the positioning assembly;

[0018] Figure 5 is a schematic diagram of the internal structure of the clamping mechanism;

[0019] Figure 6 This is a diagram of the use state of a fixture for processing an air-conditioning compressor housing according to the utility model;

[0020] The reference numerals are as follows:

[0021] 1. Clamping mechanism, 2. Support mechanism, 3. Mounting plate, 4. Workpiece seat, 5. Positioning assembly, 11. Machine base, 12. Cylinder, 13. Connector, 14. Clamping assembly, 141. Drive rod, 142. Bushing, 143. Slider, 144. Pressing block, 145. Adjusting block, 146. Adjusting groove, 21. Bracket, 22. Support cylinder, 41. Seat body, 42. Positioning block, 43. Supporting protrusion, 51. Ball plunger, 52. Supporting block, 53. Pressing assembly, 531. Fixed seat, 532. Ejecting block, 533. Spring, 534. Ejector rod. 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] A fixture for processing an air-conditioning compressor housing, such as Figure 1-Figure 6 As shown, it includes a clamping mechanism 1, a supporting mechanism 2, a mounting plate 3, a workpiece seat 4 and a positioning assembly 5. The mounting plate 3 is arranged on the clamping mechanism 1, the workpiece seat 4 supports and roughly positions the shell, the positioning assembly 5 is arranged in the circumference of the workpiece seat 4, and the positioning assembly 5 is used to calibrate the placement angle of the shell. The supporting mechanism 2 is arranged on the mounting plate 3, and the supporting mechanism 2 is used to support the outer wall of the open end of the shell, and the clamping mechanism 1 is used to clamp the outer wall of the other end of the shell.

[0024] In one embodiment, if Figure 1-Figure 6 As shown, the clamping mechanism 1 includes a machine base 11, a cylinder 12, a connecting piece 13 and three groups of clamping assemblies 14. The clamping assemblies 14 are arranged on the machine base 11, and the three groups of clamping assemblies 14 are circumferentially distributed around the workpiece base 4. Usually, the three groups of clamping assemblies 14 are evenly spaced. The clamping assembly 4 is connected to the cylinder 12 through the connecting piece 13, and the connecting piece 13 is driven up and down by the cylinder 12, thereby driving the clamping assembly 4 to move toward the housing to achieve clamping and loosening of the housing.

[0025] The clamping assembly 14 includes a driving rod 141, a sleeve 142, a slider 143 and a pressure block 144. The middle of the driving rod 141 is rotatably connected to the base 11 through a rotating shaft. The sleeve 142 is axially slidably arranged on the driving rod 141, and the sleeve 142 is rotatably connected to the connecting member 13. An adjustment block 145 is extended from the upper end of the driving rod 141, and an adjustment groove 146 is arranged on the adjustment block 145. The slider 143 is arranged in the adjustment groove 145, and the pressure block 144 is connected to the slider 1431 through a screw. When locking, the screw is turned to clamp the slider 143 and the adjustment groove 146. When the oil cylinder 12 drives the connecting member 13 to move downward, the sleeve 142 will move downward and rotate at the same time, thereby driving the pressure block 144 to move toward the housing. On the contrary, if the connecting member 13 moves upward, the driving rod 141 rotates in the opposite direction to make the pressure block 144 away from the housing.

[0026] In the above embodiment, if Figure 1-Figure 6 As shown, the adjusting block 145 is a square structure, and a guide groove matching the adjusting block 145 is provided on the pressing block 144. The pressing block 144 is slidably connected with the adjusting block 145 through the guide groove, and the slider 134 is slidably connected with the adjusting groove 146, and the two guide each other to ensure the reliability of the connection between the pressing block 144 and the adjusting block 145.

[0027] In one embodiment, if Figure 1-Figure 6 As shown, the workpiece seat 4 includes a seat body 41, on which a positioning block 42 and three supporting protrusions 43 are arranged, and the supporting protrusions 43 are arranged around the positioning block 42. The end of the shell has a circular wall, and the shell is initially centrally positioned by the positioning block 42 so that the shell can be quickly placed; the three supporting protrusions 43 are evenly spaced to support the shell.

[0028] In the above embodiment, if Figure 1-Figure 6 As shown, the cross section of the positioning block 42 is triangular. The triangle is used to achieve triangular positioning, which not only plays a role in positioning, but also facilitates the assembly of the housing and the positioning block 42. Preferably, the upper edge of the positioning block 42 is chamfered.

[0029] In one embodiment, if Figure 1-Figure 6 As shown, the positioning assembly 5 includes three groups of ball plungers 51, support blocks 52 and clamping assemblies 53. The ball plungers 51 are circumferentially arranged on the mounting plate 3 around the workpiece seat 4 through a bracket, and the three ball plungers 51 are used to float and clamp the outer wall of the shell; the support blocks 52 and the clamping assemblies 53 act on the plane of the outer wall, and the shell and the support blocks 52 are abutted by the clamping assemblies 53. In the above structure, a spring is arranged inside the ball plunger 51, so that the steel ball at the end of the ball plunger 51 is pressed against the shell by the spring to realize the pre-positioning of the shell; at the same time, two relative reference planes on the shell are selected, and the shell and the support column 52 are abutted by the clamping assembly 53 to realize the angular positioning of the shell.

[0030] Specifically, Figure 1-Figure 6 As shown, the pressing assembly 53 includes a fixed seat 531, a top block 532, a spring 533 and a top rod 534. The fixed seat 531 is arranged on the mounting plate 3, the top block 532 is rotatably arranged on the fixed seat 531, the top rod 534 is slidably arranged on the top block 532, the spring 533 is arranged on the top rod 534, and the two ends of the spring 533 act on the top rod 534 and the top block 532 respectively, providing a driving force for the top block 532, so that the top block 532 is pressed against the housing. Preferably, the top rod 534 is a screw and a nut of equal height.

[0031] In one embodiment, if Figure 1-Figure 6 As shown, the support mechanism 2 includes three groups of brackets 21 and support cylinders 22 arranged on the brackets 21. The brackets 21 are arranged in a circular array in the circumference of the fixed workpiece seat 4. The upper end opening of the shell is supported by the support cylinders 22, which effectively avoids excessive processing of the size and processing deformation caused by the shaking of the shell during processing.

[0032] When the utility model is in use, the lower end of the shell is placed on the positioning block 42, and the outer side is pre-positioned and angularly positioned by the positioning assembly 5. After completion, the clamping mechanism 1 works so that the axial pressing block 144 presses against the outer wall of the shell to clamp and fix the lower end of the shell. Then, the pistons of the three support cylinders 22 of the support mechanism 2 move toward the shell, and the outer wall of the upper end opening of the shell is supported by the support cylinders 22 to play an auxiliary role and prevent the shell from shaking during processing.

[0033] 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 an air-conditioning compressor housing, characterized in that: It includes a clamping mechanism, a supporting mechanism, a mounting plate, a workpiece seat and a positioning assembly. The mounting plate is arranged on the clamping mechanism. The workpiece seat supports and roughly positions the outer shell. The positioning assembly is arranged in the circumference of the workpiece seat. The positioning assembly is used to calibrate the placement angle of the outer shell. The supporting mechanism is arranged on the mounting plate. The supporting mechanism is used to support the outer wall of the open end of the outer shell. The clamping mechanism is used to clamp the outer wall of the other end of the outer shell.

2. A fixture for processing an air-conditioning compressor housing according to claim 1, characterized in that: The clamping mechanism includes a machine base, a cylinder, a connecting piece and three groups of clamping assemblies. The clamping assembly is arranged on the machine base. The three groups of clamping assemblies are circumferentially distributed in the circumference of the workpiece seat. The clamping assembly is connected to the cylinder through the connecting piece. The connecting piece is driven by the cylinder to control the clamping assembly to move toward the housing.

3. A fixture for processing an air-conditioning compressor housing according to claim 2, characterized in that: The clamping assembly includes a driving rod, a sleeve, a slider and a pressure block. The middle of the driving rod is rotatably connected to the machine base via a rotating shaft. The sleeve is axially slidably arranged on the driving rod, and the sleeve is rotatably connected to the connecting piece. An adjustment block is extended from the upper end of the driving rod, an adjustment groove is arranged on the adjustment block, the slider is arranged in the adjustment groove, and the pressure block is connected to the slider via a screw. When locking, the screw is turned to clamp the slider and the adjustment groove.

4. A fixture for processing an air-conditioning compressor housing according to claim 3, characterized in that: The adjusting block is a square structure, and the pressing block is provided with a guide groove matched with the adjusting block.

5. The fixture for processing an air-conditioning compressor housing according to claim 1, characterized in that: The workpiece seat comprises a seat body, on which a positioning block and three supporting protrusions are arranged, and the supporting protrusions are arranged around the positioning block.

6. A fixture for processing an air-conditioning compressor housing according to claim 5, characterized in that: The cross section of the positioning block is triangular.

7. The fixture for processing an air-conditioning compressor housing according to claim 1, characterized in that: The positioning assembly includes three groups of ball plungers, a support block and a clamping assembly. The ball plungers are circumferentially arranged on the mounting plate around the workpiece seat through a bracket, and the three ball plungers are used to float clamp the outer wall of the shell; the support block and the clamping assembly act on the plane of the outer wall, and the clamping assembly is used to make the shell and the support block collide with each other.

8. The fixture for processing an air-conditioning compressor housing according to claim 7, characterized in that: The clamping assembly includes a fixed seat, a push block, a spring and a push rod. The fixed seat is set on the mounting plate, the push block is rotatably set on the fixed seat, the push rod is slidably set on the push block, the spring is installed on the push rod, the lower end of the push rod acts on the mounting plate, and the spring is used to drive the push block to rotate and clamp toward the outer shell.

9. The fixture for processing an air-conditioning compressor housing according to claim 1, characterized in that: The support mechanism comprises three groups of supports and support cylinders arranged on the supports, and the circumferential array of the supports is arranged in the circumference of the workpiece seat.

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