Workpiece clamping device

Abstract

The utility model provides a workpiece clamping device, and belongs to the technical field of machinery. The problem that smooth connection of multiple procedures cannot be achieved is solved. The tool comprises a bottom plate and a first check block fixedly connected to the bottom plate, one side, where the first check block is located, of the bottom plate is in threaded connection with an operation bolt, the rod portion of the operation bolt is sequentially sleeved with a positioning block and an extrusion block in the direction away from the bottom plate, the positioning block is provided with a first guide slope, and a kidney-shaped hole is formed in the position, allowing the rod portion of the operation bolt to penetrate, of the extrusion block. The length direction of the kidney-shaped hole is arranged in the direction, close to the first check block, of the operating bolt, the head of the operating bolt abuts against the side, away from the bottom plate, of the extrusion block, and the extrusion block can move along the first guide slope and be close to the first check block by screwing the operating bolt. The device has the advantages that the occupied area is small, and working procedures can be smoothly connected with the minimum occupied machine tool area.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a workpiece clamping device. Background Art

[0002] At present, for workpiece surface processing that needs to be performed on a vertical machining center, a horizontal machining center or a gantry machining center, a vise is usually used to complete the clamping and fixing of the workpiece. For example, a self-centering precision vise with a dustproof function disclosed in patent application number 202220578829.X includes a base, the base has a connected slide groove, a dustproof block integrally formed with the base and having a central through hole is provided at the center of the slide groove, and a sliding block is located on both sides of the dustproof block. The center position of the two sliders is penetrated with a screw rod that can drive the two sliders to move toward the center or both sides simultaneously along the slide groove, the screw rod passes through the central through hole, and an adjusting nut assembly is provided on the screw rod on both sides of the central through hole, and the two sliders are respectively installed with movable jaws of the clamping parts on both sides, and the base is located on the two side walls of the dustproof block and has a slag discharge port with an inclination. Before clamping, first operate the screw rod to use the adjusting nut assembly to simultaneously drive the movable jaws of the two sliders away from each other, and then place the workpiece between the two movable jaws, and then operate the screw rod to make the movable jaws of the two sliders close to each other to clamp the workpiece.

[0003] However, the vise needs to occupy a large area due to the squeezing on both sides, and multiple vises cannot be placed on a base plate. Therefore, it is not feasible for some workpieces with highly intensive processes and cannot achieve smooth connection of multiple processes. Utility Model Content

[0004] The purpose of the utility model is to propose a workpiece clamping device to solve the technical problem that multiple processes cannot be smoothly connected.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A workpiece clamping device comprises a base plate and a first stop block fixedly connected to the base plate, characterized in that an operating bolt is threadedly connected to one side of the base plate where the first stop block is located, and a positioning block and an extrusion block are sequentially sleeved on the rod portion of the operating bolt in a direction away from the base plate, the positioning block has a first guide inclined surface, and a waist-shaped hole is formed at the place where the rod portion of the operating bolt passes through the extrusion block, and the length direction of the waist-shaped hole is arranged along the direction in which the operating bolt approaches the first stop block, the head of the operating bolt abuts against a side of the extrusion block away from the base plate, and tightening the operating bolt can cause the extrusion block to move along the first guide inclined surface and approach the first stop block.

[0007] During clamping, the workpiece is placed on the bottom plate between the first stopper and the extrusion block and abutted against the first stopper, and then the operating bolt is tightened. Since the head of the operating bolt abuts against the side of the extrusion block away from the bottom plate, when the operating bolt is tightened, the operating bolt will push the positioning block against the bottom plate through the extrusion block, and since the positioning block has a first guiding inclined surface, the extrusion block is provided with a waist-shaped hole at the point where the rod of the operating bolt passes through, and the length direction of the waist-shaped hole is arranged along the direction in which the operating bolt approaches the first stopper, the extrusion block will be forced to move along the first guiding inclined surface and approach the first stopper during the tightening of the operating bolt, thereby clamping the workpiece.

[0008] The workpiece clamping device adopts the method of tightening the operating bolt to drive the extrusion block to move toward the first stopper to laterally squeeze and clamp the workpiece, and the tightening direction of the operating bolt is perpendicular to the direction in which the extrusion block approaches the first stopper, so that the occupied volume of the entire clamping device is smaller, thereby realizing smooth connection between processes with the minimum occupied machine tool area. In addition, the workpiece clamping device has a simpler structure and is more convenient to operate.

[0009] In the above-mentioned workpiece clamping device, the extrusion block has a second guiding inclined surface, and the second guiding inclined surface is in contact with the first guiding inclined surface.

[0010] By arranging the second guiding inclined surface on the extrusion block and forming abutment between the second guiding inclined surface and the first guiding inclined surface, the extrusion block can move more smoothly when the operating bolt is tightened.

[0011] In the above-mentioned workpiece clamping device, the first guide bevel is arranged between the side of the positioning block away from the base plate and the side of the positioning block close to the first stop block, and the second guide bevel is arranged between the side of the extrusion block close to the base plate and the side of the extrusion block away from the first stop block.

[0012] In the above-mentioned workpiece clamping device, a second stopper is fixedly connected to the bottom plate, and a side of the positioning block away from the first stopper abuts against the second stopper.

[0013] When clamping, the extrusion block will also exert a force on the positioning block in a direction away from the first stopper. By fixing the second stopper on the bottom plate, the side of the positioning block away from the first stopper abuts against the second stopper, so that the second stopper can be used to form a thrust on the positioning block to ensure the reliability of the workpiece clamping device.

[0014] In the above-mentioned workpiece clamping device, a gasket is sleeved on the rod of the operating bolt between the head of the operating bolt and the extrusion block, and the width and length of the waist-shaped hole are both smaller than the outer diameter of the gasket.

[0015] The width and length of the waist-shaped hole are both smaller than the outer diameter of the gasket, which means that the gasket always covers the waist-shaped hole. This can prevent chips from flying into the waist-shaped hole during processing and causing the workpiece to be unable to be clamped in place when used next time.

[0016] Compared with the prior art, the workpiece clamping device adopts the method of tightening an operating bolt to drive the extrusion block to move toward the first stop block to laterally extrude and clamp the workpiece, and the tightening direction of the operating bolt is perpendicular to the direction of the extrusion block approaching the first stop block. In this way, the occupied volume of the entire clamping device is smaller, thereby achieving smooth connection between processes with minimal machine tool area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the workpiece clamping device.

[0018] Figure 2 It is a cross-sectional view of the workpiece clamping device.

[0019] Figure 3 It is a cross-sectional view of the workpiece clamping device when in use.

[0020] In the figure, 1, bottom plate; 2, first stopper; 3, operating bolt; 4, positioning block; 4a, first guide slope; 5, extrusion block; 5a, waist-shaped hole; 5b, second guide slope; 6, second stopper; 7, gasket. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 and Figure 2 As shown, a workpiece clamping device comprises a base plate 1 and a first stopper 2 fixedly connected to the base plate 1 by a fastener. An operating bolt 3 is threadedly connected to one side of the base plate 1 where the first stopper 2 is located. A positioning block 4 and an extrusion block 5 are sequentially sleeved on the rod of the operating bolt 3 in a direction away from the base plate 1. The positioning block 4 and the operating bolt 3 are clearance-matched. The extrusion block 5 is provided with a waist-shaped hole 5a at the point where the rod of the operating bolt 3 passes through. The length direction of the waist-shaped hole 5a is arranged along the direction where the operating bolt 3 approaches the first stopper 2. The head of the operating bolt 3 abuts against the side of the extrusion block 5 away from the base plate 1. The positioning block 4 has a first guide inclined surface 4a. Tightening the operating bolt 3 can make the extrusion block 5 move along the first guide inclined surface 4a and approach the first stopper 2. A second stopper 6 is also fixedly connected to the base plate 1 by a fastener. The side of the positioning block 4 away from the first stopper 2 abuts against the second stopper 6.

[0023] In this embodiment, the extrusion block 5 has a second guide bevel 5b, which is in contact with the first guide bevel 4a. The first guide bevel 4a is arranged between the side of the positioning block 4 away from the base plate 1 and the side of the positioning block 4 close to the first stop block 2, and the second guide bevel 5b is arranged between the side of the extrusion block 5 close to the base plate 1 and the side of the extrusion block 5 away from the first stop block 2.

[0024] During clamping, the workpiece is placed on the bottom plate 1 between the first stopper 2 and the extrusion block 5 and abutted against the first stopper 2, and then the operating bolt 3 is tightened. Since the head of the operating bolt 3 abuts against the side of the extrusion block 5 away from the bottom plate 1, when the operating bolt 3 is tightened, the operating bolt 3 will push the positioning block 4 against the bottom plate 1 through the extrusion block 5, and since the positioning block 4 has a first guide slope 4a, the extrusion block 5 has a second guide slope 5b abutting against the first guide slope 4a, and the extrusion block 5 has a waist-shaped hole 5a at the point where the rod of the operating bolt 3 passes through, and the length direction of the waist-shaped hole 5a is set along the direction of the operating bolt 3 approaching the first stopper 2, then during the process of tightening the operating bolt 3, the extrusion block 5 will be forced to move along the first guide slope 4a and approach the first stopper 2, thereby gradually clamping the workpiece, and the state after clamping is as shown in FIG. Figure 3 During the clamping process, the extrusion block 5 will also exert a force on the positioning block 4 in a direction away from the first stopper 2. The workpiece clamping device fixes the second stopper 6 on the bottom plate 1 and makes the side of the positioning block 4 away from the first stopper 2 abut against the second stopper 6. In this way, the second stopper 6 can be used to form a thrust on the positioning block 4 to ensure the reliability of the workpiece clamping device.

[0025] The workpiece clamping device adopts the method of tightening the operating bolt 3 to drive the extrusion block 5 to move toward the first stopper 2 to laterally squeeze and clamp the workpiece, and the tightening direction of the operating bolt 3 is perpendicular to the direction in which the extrusion block 5 approaches the first stopper 2, so that the occupied volume of the entire clamping device is smaller, thereby realizing smooth connection between processes with the minimum occupied machine tool area. In addition, the workpiece clamping device has a simpler structure and is more convenient to operate.

[0026] Furthermore, a gasket 7 is sleeved on the rod of the operating bolt 3 between the head of the operating bolt 3 and the extrusion block 5, and the width and length of the waist-shaped hole 5a are both smaller than the outer diameter of the gasket 7. The width and length of the waist-shaped hole 5a are both smaller than the outer diameter of the gasket 7, which means that the gasket 7 always covers the waist-shaped hole 5a, so that chips can be prevented from flying into the waist-shaped hole 5a during processing, causing the workpiece to be unable to be clamped in place when used next time.

[0027] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A workpiece clamping device, comprising a base plate (1) and a first stopper (2) fixedly connected to the base plate (1), characterized in that: An operating bolt (3) is threadedly connected to one side of the base plate (1) where the first stopper (2) is located. The rod of the operating bolt (3) is sleeved with a positioning block (4) and an extrusion block (5) in sequence in a direction away from the base plate (1). The positioning block (4) has a first guiding inclined surface (4a). The extrusion block (5) has a waist-shaped hole (5a) at which the rod of the operating bolt (3) passes. The length direction of the waist-shaped hole (5a) is arranged along the direction in which the operating bolt (3) approaches the first stopper (2). The head of the operating bolt (3) abuts against a side of the extrusion block (5) away from the base plate (1). Tightening the operating bolt (3) can cause the extrusion block (5) to move along the first guiding inclined surface (4a) and approach the first stopper (2).

2. The workpiece clamping device according to claim 1, characterized in that: The extrusion block (5) has a second guiding inclined surface (5b), and the second guiding inclined surface (5b) is in contact with the first guiding inclined surface (4a).

3. The workpiece clamping device according to claim 2, characterized in that: The first guiding inclined surface (4a) is arranged between a side of the positioning block (4) away from the bottom plate (1) and a side of the positioning block (4) close to the first stopper (2), and the second guiding inclined surface (5b) is arranged between a side of the extrusion block (5) close to the bottom plate (1) and a side of the extrusion block (5) away from the first stopper (2).

4. The workpiece clamping device according to claim 1, 2 or 3, characterized in that: The bottom plate (1) is also fixedly connected to a second stopper (6), and a side of the positioning block (4) away from the first stopper (2) abuts against the second stopper (6).

5. The workpiece clamping device according to claim 1, 2 or 3, characterized in that: The rod of the operating bolt (3) is also provided with a gasket (7) between the head of the operating bolt (3) and the extrusion block (5), and the width and length of the waist-shaped hole (5a) are both smaller than the outer diameter of the gasket (7).

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