High-precision automatic hydraulic expansion vehicle clamp

Abstract

The utility model relates to a high-precision automatic hydraulic expansion vehicle clamp in the technical field of expansion vehicle clamps, a driving device comprises soft rubber which is arranged in a clamp body and used for expanding the clamp body, and a taper mandrel which is used for driving the soft rubber to expand is arranged in the soft rubber; the anti-disengaging device comprises a fixing rod fixedly installed at the right end of the fixing block, a limiting plate used for preventing the taper mandrel from damaging the soft rubber is fixedly installed at the right end of the fixing rod, and a rod body of the fixing rod is sleeved with a spring used for resetting the limiting plate. Therefore, when a part needs to be clamped and fixed, the taper core shaft can be controlled to move leftwards through the locking bolt, the soft rubber in the containing groove is expanded, the part can be clamped through the clamp body, the spring can be compressed through the limiting plate through the fixing block, the limiting plate can be clamped to the right side of the first through hole, and therefore the part can be clamped and fixed. Therefore, the taper mandrel is prevented from damaging the flexible glue.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion vehicle clamps, in particular to a high-precision automatic hydraulic expansion vehicle clamp. Background Art

[0002] When machining parts, high repeatability positioning accuracy is required, and the workpiece clamping accuracy will directly affect the workpiece machining accuracy. In the actual machine tool processing process, a very important step is the clamping of the workpiece. The taper mandrel squeezes the fixture seat head to expand and tighten the workpiece. The force used by the clamping arm is different each time, and the expansion force is also different. Similarly, the end face positioning accuracy of the workpiece will also fluctuate due to the tightening of the screws, and the end face positioning accuracy is not high. The workpiece clamping takes a long time, resulting in low work efficiency.

[0003] When the existing expansion lathe clamp clamps the parts, the soft rubber is expanded and clamped by pulling the tapered mandrel. However, there is no restriction on the tapered mandrel, which causes the tapered mandrel to continue to move and damage the soft rubber, making it inconvenient to perform expansion clamping on the parts. Utility Model Content

[0004] In order to solve the problem in the above background technology that the soft rubber is expanded and the parts are clamped by pulling the tapered mandrel, but there is a lack of restriction on the tapered mandrel, which causes the tapered mandrel to continue to move and damage the soft rubber, making it inconvenient to perform expansion clamping on the parts, the utility model provides the following technical solutions:

[0005] A high-precision automatic hydraulic expansion car clamp comprises a clamp body for clamping parts, a driving device for driving the clamp body to clamp parts is arranged in the clamp body, and a locking bolt for driving the driving device to expand the clamp body to clamp parts is arranged on the left side of the clamp body.

[0006] The driving device includes a soft rubber arranged in the clamp body for expanding the clamp body, and the soft rubber is placed in the placement groove, so that when the tapered core shaft moves in the placement groove, the soft rubber can expand, and at the same time, the outer wall of the clamp body can be close to the inner wall of the part. A tapered core shaft for driving the soft rubber to expand is arranged in the soft rubber, and a fixing block is arranged at the right end of the tapered core shaft, and the cross-section of the fixing block is stepped. An anti-slip device is arranged at the right end of the fixing block to prevent the fixing block from damaging the soft rubber.

[0007] Furthermore, a placement groove for placing soft rubber is opened in the clamp body, a through hole 1 for moving the tapered core shaft left and right is opened on the right side of the placement groove, and a through hole 2 for moving the tapered core shaft left and right is opened on the left side of the placement groove, and the aperture size of through hole 1 is larger than the aperture size of through hole 2 to facilitate the left and right movement of the tapered core shaft.

[0008] Furthermore, a fixing hole for fixing a locking bolt is provided at the left end of the tapered core shaft, so that the fixing hole can be connected to the locking bolt through a thread, and the locking bolt is connected to the hydraulic rod, so that the locking bolt can be controlled by the hydraulic rod to move the tapered core shaft left and right, so that the soft rubber can expand and the fixture body can clamp and fix the part; a card slot is provided on the shaft body of the tapered core shaft, so that the sealing ring can be clamped into the card slot, and a card slot is provided on the shaft body of the tapered core shaft.

[0009] Furthermore, the anti-slip device includes a fixing rod fixedly mounted on the right end of the fixing block, and the fixing rod can move left and right in through hole one, and a limiting plate is fixedly mounted on the right end of the fixing rod for preventing the tapered core shaft from damaging the soft rubber, and the width of the limiting plate is greater than the aperture of through hole one to prevent the tapered core shaft from completely entering the soft rubber and causing damage to the soft rubber, and a spring for resetting the limiting plate is mounted on the rod body of the fixing rod, and the spring is clamped at the right end of the clamp body, and the spring is located at the right end of through hole one.

[0010] Furthermore, a threaded hole for fixing the clamp body is opened at the left end of the clamp body, and there are two threaded holes, which are symmetrically distributed on the clamp body in an upper and lower manner, so that the clamp body can be fixed by threaded connection between the fixing bolts and the two threaded holes on the clamp body. An end face positioning block for positioning the clamp body is fixedly installed at the right end of the clamp body, and there are two end face positioning blocks, which are symmetrically welded to the right end of the clamp body in an upper and lower manner, and a sealing ring for sealing the tapered core shaft is installed in the groove of the card slot.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] By setting up the clamp body and the driving device, when the part needs to be clamped and fixed, the tapered core shaft can be controlled to move leftward by the locking bolt, and the soft rubber in the placement groove can be expanded, so that the clamp body can clamp the part, and the limiting plate can compress the spring by moving the fixed block, and the limiting plate can be stuck on the right side of the through hole to prevent the tapered core shaft from damaging the soft rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the clamp of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the drive device of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of the anti-slip assembly of the utility model.

[0017] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0018] 100-parts;

[0019] 200- fixture body, 201- through hole 1, 202- placement slot, 203- through hole 2;

[0020] 300-driving device; 310-tapered mandrel, 311-fixing hole, 312-slot, 320-fixing block, 330-soft rubber, 340-anti-slip assembly, 341-fixing rod, 342-limiting plate, 343-spring;

[0021] 400-locking bolt;

[0022] 001-threaded hole, 002-end face positioning block, 003-sealing ring. DETAILED DESCRIPTION

[0023] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0024] See also Figure 1-Figure 4 The utility model provides a high-precision automatic hydraulic expansion vehicle clamp.

[0025] The clamp body 200 comprises a clamp body 200 for clamping a part 100, a driving device 300 for driving the clamp body 200 to clamp the part 100 is arranged inside the clamp body 200, and a locking bolt 400 for driving the driving device 300 to expand the clamp body 200 to clamp the part 100 is arranged on the left side of the clamp body 200.

[0026] A threaded hole 001 for fixing the clamp body 200 is provided at the left end of the clamp body 200, and there are two threaded holes 001, which are symmetrically distributed on the clamp body 200 in an upper and lower manner, so that the clamp body 200 can be fixed by threaded connection between the fixing bolts and the two threaded holes 001 on the clamp body 200; an end face positioning block 002 for positioning the clamp body 200 is fixedly installed at the right end of the clamp body 200, and there are two end face positioning blocks 002, which are symmetrically welded on the right end of the clamp body 200 in an upper and lower manner; a sealing ring 003 for sealing the tapered core shaft 310 is installed in the groove of the card slot 312.

[0027] A placement groove 202 for placing the soft glue 330 is opened in the clamp body 200, a through hole 1 201 for the tapered core shaft 310 to move left and right is opened on the right side of the placement groove 202, and a through hole 203 for the tapered core shaft 310 to move left and right is opened on the left side of the placement groove 202, and the aperture size of the through hole 1 201 is larger than the aperture size of the through hole 2 203 to facilitate the left and right movement of the tapered core shaft 310.

[0028] The driving device 300 includes a soft glue 330 arranged in the clamp body 200 for expanding the clamp body 200, and the soft glue 330 is placed in the placement groove 202, so that when the tapered core shaft 310 moves in the placement groove 202, the soft glue 330 can be expanded, and at the same time, the outer wall of the clamp body 200 can be close to the inner wall of the part 100, so that the part 100 can be expansion-clamped and fixed; a tapered core shaft 310 for driving the soft glue 330 to expand is arranged in the soft glue 330, and a fixing block 320 is arranged at the right end of the tapered core shaft 310, and the cross-section of the fixing block 320 is stepped, so that the fixing block 320 can be inserted into the right end of the tapered core shaft 310; an anti-slip device 340 is arranged at the right end of the fixing block 320 for preventing the fixing block 320 from damaging the soft glue 330.

[0029] A fixing hole 311 for fixing the locking bolt 400 is provided at the left end of the tapered core shaft 310, so that the fixing hole 311 can be connected to the locking bolt 400 through a thread, and the locking bolt 400 is connected to the hydraulic rod, so that the locking bolt 400 can be controlled by the hydraulic rod to move the tapered core shaft 310 left and right, so that the soft rubber 330 can expand and the fixture body 200 can clamp and fix the parts; a card slot 312 is provided on the shaft body of the tapered core shaft 310, so that the sealing ring 003 can be clamped into the card slot 312.

[0030] The anti-slip device 340 includes a fixing rod 341 fixedly mounted on the right end of the fixing block 320, and the fixing rod 341 can move left and right in the through hole 201; a limiting plate 342 is fixedly mounted on the right end of the fixing rod 341 for preventing the tapered mandrel 310 from damaging the soft glue 330, and the width of the limiting plate 342 is greater than the aperture of the through hole 201 to prevent the tapered mandrel 310 from completely entering the soft glue 330 and causing damage to the soft glue 330; a spring 343 for resetting the limiting plate 342 is sleeved on the rod body of the fixing rod 341, and the spring 343 is sleeved on the rod body of the fixing rod 341. 43 is stuck on the right end of the clamp body 200, and the spring 343 is located at the right end of the through hole 201; therefore, when the part 100 needs to be clamped and fixed, the tapered core shaft 310 can be controlled to move to the left by the locking bolt 400, and the soft glue 330 in the placement groove 202 can be expanded, so that the clamp body 200 can clamp the part 100, and the limiting plate 342 can be used to compress the spring 343 through the fixing block 320, and the limiting plate 342 can be stuck on the right side of the through hole 201 to prevent the tapered core shaft 310 from damaging the soft glue 330.

[0031] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A high-precision automatic hydraulic expansion car fixture, characterized by: The invention comprises a clamp body (200) for clamping a part (100), wherein a driving device (300) is arranged inside the clamp body (200) for driving the clamp body (200) to clamp the part (100), and a locking bolt (400) is arranged on the left side of the clamp body (200) for driving the driving device (300) to expand the clamp body (200) to clamp the part (100); The driving device (300) comprises a soft rubber (330) arranged in the clamp body (200) for expanding the clamp body (200); a tapered mandrel (310) for driving the soft rubber (330) to expand is arranged in the soft rubber (330); a fixing block (320) is arranged at the right end of the tapered mandrel (310); and an anti-slip device (340) for preventing the fixing block (320) from damaging the soft rubber (330) is arranged at the right end of the fixing block (320); The anti-slip device (340) comprises a fixing rod (341) fixedly mounted on the right end of the fixing block (320); a limiting plate (342) is fixedly mounted on the right end of the fixing rod (341) for preventing the tapered mandrel (310) from damaging the soft rubber (330); and a spring (343) is sleeved on the rod body of the fixing rod (341) for resetting the limiting plate (342).

2. A high-precision automatic hydraulic expansion car fixture according to claim 1, characterized in that: The fixture body (200) is provided with a placement groove (202) for placing the soft glue (330), the right side of the placement groove (202) is provided with a through hole 1 (201) for the tapered core shaft (310) to move left and right, and the left side of the placement groove (202) is provided with a through hole 2 (203) for the tapered core shaft (310) to move left and right.

3. The high-precision automatic hydraulic expansion vehicle fixture according to claim 1 is characterized in that: A fixing hole (311) for fixing a locking bolt (400) is provided at the left end of the tapered core shaft (310), and a clamping groove (312) is provided on the shaft body of the tapered core shaft (310).

4. A high-precision automatic hydraulic expansion car fixture according to claim 3, characterized in that: The left end of the clamp body (200) is provided with a threaded hole (001) for fixing the clamp body (200), and there are two threaded holes (001); the right end of the clamp body (200) is fixedly installed with an end face positioning block (002) for positioning the clamp body (200); and the groove of the clamping groove (312) is provided with a sealing ring (003) for sealing the tapered core shaft (310).

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