Workpiece clamp

Abstract

The utility model provides a workpiece clamp which is fixedly arranged on a working table with a T-shaped groove in the top face and comprises a plurality of T-shaped cushion blocks, a plurality of pressing block bases, a plurality of pressing blocks and a plurality of adjusting assemblies, the T-shaped cushion blocks are arranged in the T-shaped groove in the working table respectively and surround a workpiece, and the adjusting assemblies are arranged on the T-shaped cushion blocks. The pressing block bases are arranged on the tops of the T-shaped cushion blocks respectively, first screws used for fixed connection are arranged between the pressing block bases and the T-shaped cushion blocks, and the pressing blocks are connected with the faces, facing a workpiece, of the pressing block bases respectively in a sliding mode. The adjusting assembly is used for controlling the sliding positions of the pressing blocks so that the distance between the two opposite pressing blocks can be reduced or increased. The utility model solves the problem that a fixture needs to be arranged at the top of a workpiece to influence the path of a cutter or collide with the cutter, and reduces the risk of cutter collision.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp for a workpiece. Background Art

[0002] After a workpiece is secured to a workbench by a fixture, it is cut by the tool of a CNC machine tool. Existing fixtures use screws to lock a pressure plate on the top of the workpiece and the workbench, thereby clamping the workpiece between the pressure plate and the workbench. However, during CNC programming, the pressure plate must be avoided, which increases programming difficulty and the risk of collision between the tool and the workpiece. Therefore, the existing fixture needs to be optimized. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a workpiece fixture, which solves the problem in the prior art that the fixture needs to be set on the top of the workpiece, which affects the path of the tool or collides with the tool.

[0004] According to an embodiment of the present utility model, a workpiece clamp is provided, which is fixedly arranged on a workbench with a T-slot on the top surface, and includes a plurality of T-shaped pads, a plurality of pressure block bases, a plurality of clamping blocks and a plurality of adjustment components. The T-shaped pads are respectively arranged in the T-slots on the workbench and arranged around the workpiece, and the pressure block bases are respectively arranged on the top of the T-shaped pads. A first screw for fixed connection is provided between the pressure block base and the T-shaped pad, and the clamping blocks are respectively connected to the pressure block base for sliding toward one side of the workpiece, and the adjustment component is used to control the sliding position of the pressure block so that the distance between the two relative pressure blocks is reduced or increased.

[0005] The technical principle of the utility model is: by reducing the distance between several groups of relatively arranged pressing blocks, the workpiece is clamped from the side of the workpiece, thereby preventing the workpiece from moving during processing and avoiding the situation of setting a clamp on the top of the workpiece.

[0006] Preferably, the adjustment assembly includes a second screw and a sliding bar, a first upward inclined surface is provided on the side of the pressure block base close to the workpiece, a sliding groove extending up and down along the inclined angle is provided in the middle of the first inclined surface, a second inclined surface that is in contact with the first inclined surface is provided on the abutting side of the pressure block and the pressure block base, the sliding bar is fixedly provided on the second inclined surface, and the sliding bar and the sliding groove are slidably matched; a second threaded hole is vertically provided on the first inclined surface, and a second strip-shaped screw through hole is vertically provided on the pressure block, the direction of the second screw through hole corresponds to the direction in which the pressure block slides in the horizontal direction, and the second screw is used to connect the pressure block and the pressure block base.

[0007] Preferably, the second threaded hole is a through hole.

[0008] Preferably, a strip-shaped countersunk hole is provided at the upward end of the second screw through hole.

[0009] Preferably, the side of the pressing block close to the workpiece is a vertical surface, and the roughness of the vertical surface is greater than Ra100.

[0010] Preferably, the second screw through hole is located in the sliding groove, and the second screw through hole passes through the sliding bar.

[0011] Preferably, a plurality of second screw through holes are provided and arranged in parallel along the horizontal sliding direction of the vertical pressing block.

[0012] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a simple structure, and the rotation of the second screw allows the clamping block to slide downward on the inclined surface, and the side of the clamping block can fit the side of the workpiece. The relatively arranged clamping blocks separate the workpieces in the middle, thereby avoiding the need to set the fixture on the top of the workpiece to affect the movement of the tool on the top of the workpiece, improving the difficulty of CNC programming and reducing the risk of tool collision; when the two clamping blocks approach each other, the workpiece will be subjected to a downward force, so that the workpiece and the workbench fit more closely, further improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 This is a top view of the briquetting base of the utility model.

[0015] Figure 3 This is a top view of the compression block of the present utility model.

[0016] In the above drawings: 1. workbench; 2. pressure block base; 3. pressure block; 4. sliding bar; 5. T-shaped pad; 6. T-shaped slot; 7. workpiece; 8. sliding slot; 9. second threaded hole; 10. first threaded hole; 12. first screw through hole; 13. second screw through hole. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1As shown, an embodiment of the present invention proposes a workpiece fixture, which is fixedly arranged on a workbench 1 with a T-slot 6 on the top surface, and includes a plurality of T-shaped pads 5, a plurality of pressure block bases 2, a plurality of clamping blocks 3 and a plurality of adjustment components. The T-shaped pads 5 are respectively arranged in the T-slot 6 on the workbench 1 and are arranged around the workpiece 7. The pressure block bases 2 are respectively arranged on the top of the T-shaped pads 5. A first screw for fixed connection is provided between the pressure block bases 2 and the T-shaped pads 5. The clamping blocks 3 are respectively slidably connected to the pressure block bases 2 toward one side of the workpiece 7. The adjustment component is used to control the sliding position of the clamping blocks 3 so that the distance between the two relative clamping blocks 3 is reduced or increased. In this embodiment, the workpiece 7 is a rectangular parallelepiped, and the T-shaped pads 5, the pressure block bases 2 and the pressure blocks 3 are arranged on the four sides of the workpiece 7. When the adjustment component reduces the distance between the two relative clamping blocks 3, the movement of the workpiece 7 is avoided. A first threaded hole 10 is provided on the T-shaped pad 5, and a first screw through hole 12 is provided on the pressure block base 2. The contact surface between the T-shaped pad 5 and the pressing block base 2 is provided with a positioning key to prevent the pressing block base 2 from being displaced when the pressing block 3 presses the workpiece 7 .

[0019] like Figure 1 、 2 As shown in Figure 3, preferably, the adjustment assembly includes a second screw and a sliding bar 4. A first upward inclined surface is provided on the side of the pressure block base 2 close to the workpiece 7. A sliding groove 8 extending up and down along the inclined angle is provided in the middle of the first inclined surface. The sliding groove 8 plays a guiding role. A second inclined surface that fits the first inclined surface is provided on the abutting side of the pressure block 3 and the pressure block base 2. The sliding bar 4 is fixedly provided on the second inclined surface, and the sliding bar 4 and the sliding groove 8 slide in cooperation. A second threaded hole 9 is vertically provided on the first inclined surface, and a second strip-shaped screw through hole 13 is vertically provided on the pressure block 3. The direction of the second screw through hole 13 corresponds to the direction in which the pressure block 3 slides in the horizontal direction. The second screw is used to connect the pressure block 3 and the pressure block base 2. In this embodiment, a gap is provided between the pressure block 3 and the top surface of the workbench 1 to avoid affecting the locking effect of the pressure block 3. After securing the T-shaped spacer 5 and the clamping block base 2 to the workbench 1 using the first screw, the worker inserts the second screw through the second screw hole 13 and rotates it into the second threaded hole 9. The head of the second screw abuts the clamping block 3. The worker then continues to rotate the second screw until it enters the second threaded hole 9. The head of the second screw presses the clamping block 3 and slides downward along the first inclined surface. Simultaneously, the gap between the two opposing clamping blocks decreases, thereby completing the clamping of the workpiece 7. The two sets of opposing clamping blocks 3 can secure the workpiece 7 along the X-axis and the Y-axis.

[0020] Preferably, the second threaded hole 9 is a through hole, which increases the moving distance of the second screw in the vertical direction.

[0021] Preferably, a strip-shaped countersunk hole is provided at one end of the second screw through hole 13 facing upwards, so as to facilitate sliding and prevent the head of the second screw through hole 13 from protruding and affecting the movement of the tool.

[0022] Preferably, the side of the pressing block 3 close to the workpiece 7 is a vertical surface, and the roughness of the vertical surface is greater than Ra 100. When the side of the pressing block 3 abuts the workpiece 7, the rough vertical surface reduces the probability of relative movement between the workpiece 7 and the pressing block 3.

[0023] Preferably, the second threaded hole 9 is located in the sliding groove 8 , and the second screw through hole 13 passes through the sliding bar 4 , so that the pressing block 3 has higher stability when sliding relative to the pressing block base 2 .

[0024] Preferably, the second screw through holes 13 are provided with a plurality of them and are arranged in parallel along the horizontal sliding direction of the vertical clamping block 3. When the side of the workpiece 7 is greatly lowered, the plurality of second screws can better fix the locking block to ensure the clamping effect.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A workpiece fixture, the fixture being fixedly mounted on a workbench (1) having a T-slot (6) on its top surface, characterized in that: The invention comprises a plurality of T-shaped pads (5), a plurality of pressure block bases (2), a plurality of clamping blocks (3) and a plurality of adjustment components, wherein the T-shaped pads (5) are respectively arranged in the T-shaped slots (6) on the workbench (1) and are arranged around the workpiece (7), the pressure block bases (2) are respectively arranged on the top of the T-shaped pads (5), a first screw for fixing the connection is provided between the pressure block base (2) and the T-shaped pad (5), the clamping blocks (3) are respectively connected to the pressure block base (2) in a sliding manner toward one side of the workpiece (7), and the adjustment component is used to control the sliding position of the clamping blocks (3) so that the distance between the two relative clamping blocks (3) is reduced or increased.

2. A workpiece fixture as claimed in claim 1, characterized in that: The adjustment assembly includes a second screw and a sliding bar (4); a first upward inclined surface is provided on the side of the pressure block base (2) close to the workpiece (7); a sliding groove (8) extending up and down along the inclined angle is provided in the middle of the first inclined surface; a second inclined surface that is in contact with the first inclined surface is provided on the abutting side of the pressure block (3) and the pressure block base (2); the sliding bar (4) is fixedly provided on the second inclined surface, and the sliding bar (4) and the sliding groove (8) are slidably matched; a second threaded hole (9) is vertically provided on the first inclined surface; a second strip-shaped screw through hole (13) is vertically provided on the pressure block (3); the direction of the second screw through hole (13) corresponds to the direction in which the pressure block (3) slides in the horizontal direction; the second screw is used to connect the pressure block (3) and the pressure block base (2).

3. A workpiece fixture as claimed in claim 2, characterized in that: The second threaded hole (9) is a through hole.

4. A workpiece fixture as claimed in claim 2, characterized in that: A strip-shaped countersunk hole is provided at an upward end of the second screw through hole (13).

5. A workpiece fixture as claimed in claim 1, characterized in that: The side of the pressing block (3) close to the workpiece (7) is a vertical surface, and the roughness of the vertical surface is greater than Ra100.

6. A workpiece fixture as claimed in claim 2, characterized in that: The second threaded hole (9) is located in the sliding groove (8), and the second screw through hole (13) passes through the sliding bar (4).

7. A workpiece fixture as claimed in claim 2, characterized in that: The second screw through holes (13) are provided in a plurality and are arranged in parallel along the sliding direction of the vertical pressing block (3) in the horizontal direction.

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