CN215469631U

CN215469631U - Machining center clamp for crankshaft of rotary compressor

Info

Publication number: CN215469631U
Application number: CN202121289368.6U
Authority: CN
Inventors: 李文兵; 何山海; 马金河
Original assignee: ZHEJIANG BAIDA PRECISION MANUFACTURING CORP
Current assignee: ZHEJIANG BAIDA PRECISION MANUFACTURING CORP
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-01-11
Anticipated expiration: 2031-06-09

Abstract

The utility model provides a machining center clamp for a rotary compressor crankshaft, and belongs to the technical field of clamps. The problem that an existing rotary compressor crankshaft is low in machining efficiency and is not suitable for being applied to a numerical control machining center clamp is solved. The machining center clamp for the crankshaft of the rotary compressor comprises a base, a movable positioning block and a compression bar base, wherein a V-shaped block and a driving element are arranged on the base; the compression bar is connected with the driving element and can be positioned above the V-shaped block, and when the driving element acts, the compression bar can press the main shaft part of the crankshaft of the rotary compressor in a first V-shaped groove of the V-shaped block. The machining center fixture is adopted to clamp the rotary compressor crankshaft and the numerical control machining center is utilized to machine the rotary compressor crankshaft, so that the machining efficiency can be obviously improved, and the machining cost is reduced.

Description

Machining center clamp for crankshaft of rotary compressor

Technical Field

The utility model belongs to the technical field of anchor clamps, a machining center anchor clamps, especially a machining center anchor clamps of rotary compressor bent axle are related to.

Background

The motor of the rotary compressor does not need to convert the rotary motion of the rotor into the reciprocating motion of the piston, but directly drives the rotary piston to rotate to complete the compression of the refrigerant vapor. The rotary compressor is more suitable for small-sized air conditioners, and is more widely applied to household air conditioners in particular.

The number of the compressor cylinders in different models is different, such as a single-cylinder rotary compressor and a double-cylinder rotary compressor. The single-cylinder rotary compressor crankshaft blank is provided with only one eccentric crankshaft part; the crankshaft blank of the double-cylinder rotary compressor is provided with two eccentric crankshaft parts which are oppositely arranged at 180 degrees, and the crankshaft with the structure has the advantages of reducing vibration and noise, reducing the driving force required by the compressor, improving the energy efficiency ratio of the compressor and the like.

The crankshaft is one of the core components of the rotary compressor, and an oil groove, a radial hole, a shaft end key groove and the like are required to be processed during crankshaft processing. Every process of current bent axle is processed on different equipment, therefore people have proposed multiple rotary compressor bent axle anchor clamps, for example a novel anchor clamps of air condition compressor bent axle eccentric shaft excircle (application number 201811159562.5), a compressor bent axle car eccentric anchor clamps (application number 201820788177.6), an air condition compressor bent axle terminal surface centering anchor clamps (application number 202020572446.2). The existing crankshaft machining has the advantages of multiple machining devices, multiple fixtures, repeated disassembly and assembly, low machining efficiency and high machining efficiency.

The numerical control machining center has the capability of automatically exchanging machining tools, and the machining tools on the main shaft can be changed through the automatic tool changing device in one-time clamping by installing tools with different purposes on the tool magazine, so that multiple machining functions are realized. In theory, the efficiency can be improved by machining the crankshaft by using the numerical control machining center, but no clamp which is suitable for being applied to the numerical control machining center and used for clamping the crankshaft of the rotary compressor exists at present.

Practical contents

The utility model provides a machining center anchor clamps of rotary compressor bent axle, the technical problem that the utility is solved how to propose an anchor clamps that is fit for being applied to numerical control machining center and be used for clamping rotary compressor bent axle.

The technical problem to be solved in the utility model can be realized by the following technical scheme: a machining center clamp for a rotary compressor crankshaft comprises a base and is characterized in that a V-shaped block and a driving element are mounted on the base, the machining center clamp further comprises a movable positioning block and a pressing rod, a positioning groove for embedding an eccentric part of the rotary compressor crankshaft is formed in the movable positioning block, and the movable positioning block is detachably mounted on the base or the V-shaped block; the compression bar is connected with the driving element and can be positioned above the V-shaped block, and when the driving element acts, the compression bar can press the main shaft part of the crankshaft of the rotary compressor in a first V-shaped groove of the V-shaped block.

A base of the machining center clamp is arranged on the workbench; when the rotary compressor crankshaft is clamped, the movable positioning block is installed on the base or the V-shaped block firstly, then the main shaft part is placed in a first V-shaped groove of the V-shaped block, the eccentric part is embedded in the positioning groove, therefore, the position of the crankshaft of the rotary compressor is circumferentially positioned, and the crankshaft of the rotary compressor is clamped at the same position at each time. And then, connecting the crankshaft of the rotary compressor with a fourth main shaft of the numerical control machining center, and operating the driving element to enable the compression rod to press the main shaft part of the crankshaft of the rotary compressor on the V-shaped block, so that the position of the crankshaft of the rotary compressor is fixed. And finally, removing the movable positioning block, so that the rotary compressor crankshaft can be driven to rotate by a fourth main shaft of the numerical control machining center in subsequent machining.

Compared with the prior art, the machining center clamp is used for clamping the rotary compressor crankshaft, the consistency of clamping positions can be guaranteed, and the clamping firmness in machining can be guaranteed. After the compression bar releases the crankshaft of the rotary compressor, the fourth main shaft of the numerical control machining center can drive the crankshaft of the rotary compressor to rotate around the axis of the crankshaft, and then the numerical control machining center can machine different circumferential positions of the crankshaft of the rotary compressor, such as machining oil grooves, radial holes, shaft end key grooves and the like. Therefore, the machining center fixture is adopted to clamp the rotary compressor crankshaft and the numerical control machining center is adopted to machine the rotary compressor crankshaft, so that the machining efficiency can be obviously improved, and the machining cost is reduced.

This machining center anchor clamps of rotary compressor bent axle not only is fit for the bent axle of clamping single cylinder rotary compressor, also is fit for the bent axle of clamping double-cylinder rotary compressor, and this machining center anchor clamps of rotary compressor bent axle have the advantage that the commonality is high promptly.

In the machining center clamp for the crankshaft of the rotary compressor, when the eccentric part of the crankshaft of the rotary compressor is embedded into the positioning groove, the shaft axis of the eccentric part and the main shaft part are positioned on the same vertical surface.

In the machining center clamp for the crankshaft of the rotary compressor, the base or the V-shaped block is provided with the clamping groove, the bottom of the movable positioning block is provided with the plug part matched with the clamping groove, and the plug part can be embedded into the clamping groove.

In the machining center clamp for the crankshaft of the rotary compressor, the clamping groove is provided with a side opening.

In the machining center clamp of the rotary compressor crankshaft, the bottom of the V-shaped block is fixedly connected with the base through a positioning pin and a bolt.

In the machining center clamp for the crankshaft of the rotary compressor, the driving element is an air cylinder or a hydraulic cylinder, the driving element is positioned on one side of the V-shaped block, a cylinder body of the driving element is fixed on the base, and the pressure rod is connected with a piston rod of the driving element.

In the machining center clamp of the crankshaft of the rotary compressor, the compression rod is rotationally connected with a piston rod of a driving element through a first rotating shaft; the middle part of the pressure lever is rotatably connected with a mandril through a second rotating shaft, the lower end part of the mandril is rotatably connected with a mounting seat through a third rotating shaft, and the mounting seat is fixed on a cylinder body of the driving element.

In the machining center clamp for the rotary compressor crankshaft, the pressing rod is provided with a second V-shaped groove, and the main shaft part of the rotary compressor crankshaft can be embedded into the second V-shaped groove.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 and 3 are schematic perspective views of different viewing angles for clamping a crankshaft of a rotary compressor by using a machining center clamp.

In the figure, 1, a base; 1a, bolt holes; 2. a V-shaped block; 2a, a first V-shaped groove; 2b, a clamping groove; 3. a drive element; 4. a movable positioning block; 4a, a positioning groove; 4b, a plug portion; 5. a pressure lever; 5a, a second V-shaped groove; 6. positioning pins; 7. a bolt; 8. a first rotating shaft; 9. a second rotating shaft; 10. a top rod; 11. a third rotating shaft; 12. a mounting seat; 13. an eccentric portion; 14. a main shaft portion.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the machining center fixture for the crankshaft of the rotary compressor comprises a base 1, a V-shaped block 2, a driving element 3, a movable positioning block 4 and a pressure rod 5.

The base 1 is provided with a bolt hole 1a, so that the machining center clamp can be conveniently installed and fixed. The top of V type piece 2 has first V type groove 2a, through 6 location connections of locating pin and through bolt 7 fixed connection between the bottom of V type piece 2 and the base 1, can adjust V type piece 2 according to waiting to process rotary compressor bent axle model from this, and guarantee to relapse the position of dismouting back V type piece 2 for base 1 the same.

The driving element 3 is a cylinder or a hydraulic cylinder, the driving element 3 is positioned at one side of the V-shaped block 2, and the cylinder body of the driving element 3 is fixed on the base 1. The pressure lever 5 is positioned above the V-shaped block 2, and one end part of the pressure lever 5 is rotatably connected with the piston rod of the driving element 3 through a first rotating shaft 8. The middle part of the pressure lever 5 is rotatably connected with a mandril 10 through a second rotating shaft 9, the lower end part of the mandril 10 is rotatably connected with a mounting seat 12 through a third rotating shaft 11, and the mounting seat 12 is fixed on a cylinder body of the driving element 3, so that the length of the mandril 10 can be reduced, the distance between the driving element 3 and the V-shaped block 2 is reduced, and the structure compactness of the clamp of the machining center is improved.

The top of the movable positioning block 4 is provided with a positioning groove 4a, and the movable positioning block 4 is detachably arranged on the base 1 or the V-shaped block 2. Specifically, the bottom of the V-shaped block 2 is plate-shaped and is provided with a clamping groove 2b, the bottom of the movable positioning block 4 is provided with a plug part 4b matched with the clamping groove 2b, and the plug part 4b can be embedded into the clamping groove 2 b. The clamping groove 2b is provided with a side opening, so that the movable positioning block 4 can be conveniently disassembled and assembled.

The function and advantages of the various components are further illustrated by illustrating the process of clamping the crankshaft of the rotary compressor using a machining center fixture, as shown in fig. 2 and 3. The numerical control machining center is provided with a first main shaft for mounting a cutter and a fourth main shaft capable of driving a workpiece to rotate, and the fourth main shaft is provided with a clamping jaw. Firstly, a base 1 is fixed on a workbench of a numerical control machining center through a bolt 7, and a plug part 4b of a movable positioning block 4 is embedded into a clamping groove 2b of a V-shaped block 2; the movable positioning block 4 is positioned between the V-shaped block 2 and the clamping jaw. The driving element 3 is controlled to enable the piston rod to be in a retraction state, and a larger distance is reserved between the other end of the pressure rod 5 and the top surface of the V-shaped block 2, so that people can conveniently place the crankshaft of the rotary compressor in the first V-shaped groove 2 a.

Secondly, the eccentric part 13 of the crankshaft of the rotary compressor is embedded in the positioning groove 4a of the movable positioning block 4, the crankshaft of the rotary compressor is rotated to enable the main shaft part 14 of the crankshaft to be embedded in the first V-shaped groove 2a, and the crankshaft of the rotary compressor is axially moved to enable one end of the main shaft part 14 of the crankshaft to be embedded in the clamping jaw. The crankshafts of the rotary compressor are positioned through the movable positioning blocks 4 and the first V-shaped grooves 2a to ensure that the clamping states are consistent; by reasonably arranging the position of the positioning groove 4a, the shaft axis of the eccentric part 13 and the main shaft part 14 are ensured to be positioned on the same vertical plane.

Thirdly, the clamping jaw is controlled to clamp the main shaft part 14 of the crankshaft of the rotary compressor, the driving element 3 is controlled to extend the piston rod, and the piston rod drives the pressing rod 5 to swing until the other end part of the pressing rod 5 presses the main shaft part 14 of the crankshaft of the rotary compressor; the pressure lever 5 thereby presses the rotary compressor crankshaft main shaft portion 14 into the first V-groove 2a of the V-block 2. The compression bar 5 is provided with a second V-shaped groove 5a, and the main shaft part 14 of the rotary compressor crankshaft is embedded into the second V-shaped groove 5a, so that the clamping stability and the firmness are improved.

Fourthly, the eccentric part 13 of the rotary compressor is separated from the movable positioning block 4 by horizontally moving the movable positioning block 4 or inclining the movable positioning block 4.

Claims

1. The machining center clamp for the crankshaft of the rotary compressor comprises a base (1) and is characterized in that a V-shaped block (2) and a driving element (3) are mounted on the base (1), the machining center clamp further comprises a movable positioning block (4) and a pressing rod (5), a positioning groove (4 a) for embedding an eccentric part (13) of the crankshaft of the rotary compressor is formed in the movable positioning block (4), and the movable positioning block (4) is detachably mounted on the base (1) or the V-shaped block (2); the compression bar (5) is connected with the driving element (3), the compression bar (5) can be positioned above the V-shaped block (2), and when the driving element (3) acts, the compression bar (5) can press the main shaft part (14) of the crankshaft of the rotary compressor in a first V-shaped groove (2 a) of the V-shaped block (2).

2. The machining center clamp of the crankshaft of the rotary compressor as recited in claim 1, wherein when the eccentric portion (13) of the crankshaft of the rotary compressor is inserted into the positioning groove (4 a), the axis line of the eccentric portion (13) and the main shaft portion (14) are located on the same vertical plane.

3. The machining center fixture of the crankshaft of the rotary compressor as claimed in claim 1, wherein the base (1) or the V-shaped block (2) is provided with a slot (2 b), the bottom of the movable positioning block (4) is provided with a plug portion (4 b) matching with the slot (2 b), and the plug portion (4 b) can be embedded into the slot (2 b).

4. The machining center clamp of a crankshaft of a rotary compressor according to claim 3, wherein the clamping groove (2 b) has a side opening.

5. The machine center fixture of the rotary compressor crankshaft as claimed in claim 1, wherein the bottom of the V-shaped block (2) is fixedly connected with the base (1) by a positioning pin (6) and a bolt (7).

6. The machine center fixture of the crankshaft of the rotary compressor as claimed in any one of claims 1 to 5, wherein the driving member (3) is a cylinder or a hydraulic cylinder, the driving member (3) is located at one side of the V-shaped block (2), the cylinder body of the driving member (3) is fixed on the base (1), and the pressure rod (5) is connected with the piston rod of the driving member (3).

7. The machining center clamp of the crankshaft of the rotary compressor as claimed in claim 6, wherein the compression rod (5) is rotatably connected with the piston rod of the driving element (3) through a first rotating shaft (8); the middle part of the pressure lever (5) is rotatably connected with a mandril (10) through a second rotating shaft (9), the lower end part of the mandril (10) is rotatably connected with a mounting seat (12) through a third rotating shaft (11), and the mounting seat (12) is fixed on the cylinder body of the driving element (3).

8. The clamp for the machining center of the crankshaft of the rotary compressor as claimed in any one of claims 1 to 5, wherein the compression rod (5) is provided with a second V-shaped groove (5 a), and the main shaft part (14) of the crankshaft of the rotary compressor can be embedded into the second V-shaped groove (5 a).