Positioning and clamping mechanism for machining disc workpieces

Abstract

The utility model relates to a positioning and clamping mechanism for machining disc workpieces, which comprises a base with a flat plate. Supporting legs are arranged below the opposite sides of the flat plate and provided with center holes, and the centers of the lower surfaces of the supporting legs are connected with first oil cylinders. A piston rod of the first oil cylinder movably extends into the center hole. A clamping sleeve is arranged on the flat plate and comprises a circular ring. And a connecting rib is arranged between the clamping jaws, and the upper end and the lower end of each clamping jaw incline outwards and inwards respectively. The inner side of the upper end of the clamping jaw is provided with a step. The lower end of the pull rod is connected with the piston rod, and the upper end of the pull rod is connected with a round block which is located on the inner folding edge. Supporting columns are connected to the base between the adjacent clamping jaws, and a supporting disc is connected between the upper ends of the supporting columns. The clamping device is simple in structure, few in parts, convenient to disassemble and assemble and suitable for clamping and positioning when the scroll static disc of the automobile air conditioner compressor is machined.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of clamps. Specifically speaking, it is the clamp used for positioning and clamping when processing disc workpiece. It is especially suitable for clamping and positioning when processing compressor scroll static disc of automobile air conditioner. BACKGROUND

[0002] It is known in the field of machining that when processing disc workpiece such as scroll static disc, clamp is needed to clamp and position it. Especially when processing small end face of scroll static disc, large end face of it needs to be clamped and fixed. At present, the clamp for clamping and fixing large end face of scroll static disc mostly uses expansion sleeve to clamp the edge of large end face of scroll static disc. Although using expansion sleeve to clamp the edge of large end face of scroll static disc can realize clamping and positioning of scroll static disc, due to the complex structure of expansion sleeve and many parts, it not only has poor stability, but also is troublesome to disassemble and assemble. UTILITY MODEL CONTENTS

[0003] The utility model solves the problem of providing a positioning and clamping mechanism for processing disc workpiece. This positioning and clamping mechanism has simple structure, few parts, good stability and is convenient to disassemble and assemble.

[0004] The above problems solved by the utility model are solved by the following technical solutions:

[0005] The positioning and clamping mechanism for processing disc workpiece of the utility model has the following characteristics: it comprises a base, and the base comprises a flat plate. The flat plate is rectangular, and its opposite sides are connected with legs below, and has a center hole above, and a first oil cylinder is connected with the center of its lower surface. The piston rod of the first oil cylinder is upward and extends into the center hole. The flat plate has a sleeve, and the sleeve comprises a ring. The ring is connected with the flat plate, and the inner side of the ring is evenly distributed with clamps. The longitudinal middle of the clamp is connected with the ring by a connecting rib, and its upper end and lower end are inclined outward and inward respectively. The lower end of the clamp has an inner folding edge, and the inner side of its upper end has a step matched with the edge of disc workpiece. The flat plate between the lower ends of adjacent clamps is connected with a support column, and the heights of all support columns are the same, and their upper ends are connected with a support disc.

[0006] In a further improved scheme of the utility model, the front side of one of the clamps is connected with an angular positioning block, and the angular positioning block is connected with an angular positioning column adjacent to one end of the clamp, and the angular positioning column blocks the edge of the workpiece being processed. The flat plate on the rear side of the other clamp is connected with a second oil cylinder, and the outer end of the piston rod of the second oil cylinder is on the edge of the workpiece being processed.

[0007] The further improved scheme of the utility model discloses, the second oil cylinder is connected with the flat plate through the support block.

[0008] The further improved scheme of the utility model discloses, the sleeve is sleeved on the pull rod. The upper end of the sleeve is stretched above the flat plate and is higher than the inner flange of the lower end of the clamping jaw, and the anti-broken ring is arranged on the upper end of the sleeve. The round block of the upper end of the pull rod is located on the anti-broken ring and the inner flange of the lower end of the clamping jaw, and the lower end of the round block sequentially passes through the anti-broken ring and the sleeve and then is connected with the piston rod of the first oil cylinder through the connecting head.

[0009] From the above scheme, it can be seen that during work, the disc-shaped workpiece is placed on the support disc, the first oil cylinder is started, the piston rod of the first oil cylinder is retracted, and the round block at the upper end of the pull rod is driven to press the inner flange of the lower end of the clamping jaw through the connecting head and the pull rod in sequence, so that the upper end of the clamping jaw is retracted in the horizontal direction under the action of the connecting rib, and the disc-shaped workpiece is tightly clamped around, so that the disc-shaped workpiece is clamped and positioned. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the positioning and clamping mechanism for machining disc-shaped workpieces of the utility model.

[0011] Figure 2 It is the top view of Figure 1 .

[0012] Figure 3 It is the A-A section view of Figure 2 .

[0013] Figure 4 It is the three-dimensional schematic view of the positioning and clamping mechanism for machining disc-shaped workpieces of the utility model

[0014] Figure 5 It is the schematic view of Figure 2 with the machined scroll static disc. DETAILED DESCRIPTION

[0015] As Figures 1-4As shown, the positioning and clamping mechanism for machining disc workpieces of the utility model, including base, the base contains flat plate 1. The flat plate 1 is rectangle, and one pair of opposite sides is connected with support leg 2, and the upper part is processed with central hole, and the lower surface center is connected with first oil cylinder 13. The piston rod 131 of first oil cylinder 13 is upwards and is in the form of activity and extends into the central hole. The flat plate 1 is connected with clamping sleeve, and the clamping sleeve contains circular ring 10. The circular ring 10 is short cylinder, and the lower end is uniformly distributed with aperture in the circumferential direction, and the lower end is connected with flat plate 1, and the inner side is uniformly distributed with clamping jaw 101 in the circumferential direction. The longitudinal direction intermediate of clamping jaw 101 is connected with circular ring 10 by means of connecting rib 102, and the upper end and the lower end are inclined outward and inward respectively. The lower end of clamping jaw 101 is processed with inner fold edge 103, and the upper end inner side is processed with step 104 matched with the edge of disc workpiece 15. The lower end of the pull rod 3 is connected with the outer end of the piston rod 131, and the upper end is processed with the circular block 31 formed as a whole. The circular block 31 is located on the inner fold edge 103 of the lower end of the clamping jaw 101. The flat plate 1 between adjacent clamping jaws 101 is connected with support column 7, and the height of all support columns 7 is the same, and the upper end is connected with a support disc 6.

[0016] In order to facilitate the angular positioning of the disc workpiece, an angular positioning block 9 is connected to the front side of one of the clamping jaws 101 on the flat plate 1, and the angular positioning block 9 is connected to one end adjacent to the clamping jaw 101, and the angular positioning column 91 is blocked on the edge of the disc workpiece 15 to be machined. The flat plate 1 on the rear side of the other clamping jaw 101 is connected to a second oil cylinder 12, and the outer end of the piston rod of the second oil cylinder 12 is on the edge of the disc workpiece 15 to be machined. See Figure 5 In the embodiment, the disc workpiece 15 is a scroll static disc of an automobile air conditioner compressor, and the angular positioning column 91 is blocked at the corresponding aperture of the edge of the scroll static disc to be machined, and the outer end of the piston rod of the second oil cylinder 12 is on the corresponding aperture of the edge of the scroll static disc to be machined.

[0017] In order to facilitate installation, the second oil cylinder 12 is connected to the flat plate 1 by means of a support block 11. The support block 11 is fixed to the flat plate 1.

[0018] In order to facilitate installation and maintenance, a sleeve 4 is sleeved on the pull rod 3. The upper end of the sleeve 4 extends above the flat plate 1 and is higher than the lower side of the inner fold edge 103 of the lower end of the clamping jaw 101, and a anti-collapse ring 5 is arranged on the upper end. The circular block 31 on the upper end of the pull rod 3 is located on the anti-collapse ring 5 and the inner fold edge 103 of the lower end of the clamping jaw 101, and the lower end passes through the anti-collapse ring 5 and the sleeve 4 in turn and is connected to the piston rod 131 of the first oil cylinder 13 through the connecting head 14.

[0019] In the embodiment, the clamping sleeve is a spring steel product, so that the connecting rib 102 has elasticity.

[0020] During operation, the vortex stationary disc to be processed is placed on the support plate 6. The first oil cylinder 13 is started, causing its piston rod to retract inward. Then, through the connector 14 and the pull rod 3, the round block 31 at the upper end of the pull rod 3 is driven to press down the inner folded edge 103 at the lower end of the gripper. Then, under the action of the connecting rib 102, the upper end of the gripper retracts inward in the horizontal direction and tightly clamps the disc-shaped workpiece around its perimeter, thereby achieving the clamping and positioning of the disc-shaped workpiece.

Claims

1. A positioning and clamping mechanism for processing disc-shaped workpieces, characterized in that: The utility model relates to a disc-shaped workpiece clamping device, which comprises a base, the base comprises a flat plate (1), the flat plate (1) is rectangular, the opposite sides of the flat plate (1) are connected with supporting legs (2) below, the flat plate (1) is provided with a center hole above, the lower surface center of the flat plate (1) is connected with a first oil cylinder (13), the piston rod (131) of the first oil cylinder (13) is upwards and is in the form of activity and extends into the center hole, the flat plate (1) is provided with a jacket, the jacket comprises a circular ring (10), the circular ring (10) is connected with the flat plate (1), the inner side of the circular ring (10) is uniformly provided with clamping claws (101) in the circumferential direction, the longitudinal direction middle of the clamping claws (101) is connected with the circular ring (10) by means of connecting ribs (102) and is integrated, the upper end and the lower end of the clamping claws (101) are inclined outward and inward respectively, the lower end of the clamping claws (101) is provided with an inner folding edge (103), and the upper end of the clamping claws (101) is provided with a step (104) matched with the edge of the disc-shaped workpiece, the lower end of the pull rod (3) is connected with the outer end of the piston rod (131), the upper end of the pull rod (3) is provided with a circular block (31) integrated with the pull rod (3), the circular block (31) is located above the inner folding edge (103) of the lower end of the clamping claws (101), the flat plate (1) between adjacent clamping claws (101) is connected with supporting columns (7), the heights of all supporting columns (7) are same, and the upper ends of the supporting columns (7) are connected with a supporting disc (6).

2. A positioning and clamping mechanism for processing disc-shaped workpieces according to claim 1, characterized in that: The front side of one clamping claw (101) is connected with an angular positioning block (9) on the flat plate (1), the angular positioning block (9) is connected with an angular positioning column (91) near one end of the clamping claw (101), the angular positioning column (91) is blocked on the edge of the disc-shaped workpiece (15) to be machined, the rear side of another clamping claw (101) is connected with a second oil cylinder (12) on the flat plate (1), and the outer end of the piston rod of the second oil cylinder (12) is located on the edge of the disc-shaped workpiece (15) to be machined.

3. A positioning and clamping mechanism for machining disc-shaped workpieces according to claim 2, characterized in that: The second oil cylinder (12) is connected with the flat plate (1) by means of a supporting block (11).

4. A positioning and clamping mechanism for machining disc-shaped workpieces according to any one of claims 1 to 3, characterized in that: The pull rod (3) is provided with a sleeve pipe (4), the upper end of the sleeve pipe (4) extends above the flat plate (1) and is higher than the lower side of the inner folding edge (103) of the lower end of the clamping claws (101), the sleeve pipe (4) is provided with a collapse-preventing ring (5) above, the circular block (31) of the upper end of the pull rod (3) is located above the collapse-preventing ring (5) and the inner folding edge (103) of the lower end of the clamping claws (101), and the lower end of the pull rod (3) sequentially passes through the collapse-preventing ring (5) and the sleeve pipe (4) and is connected with the piston rod (131) of the first oil cylinder (13) through a connecting head (14).

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