Combined type quick-change clamping jaw

Abstract

The utility model discloses a combined quick-change clamping jaw, which belongs to the technical field of machining and comprises a clamping jaw seat, the clamping jaw seat is of a long-strip-shaped structure, a clamping jaw fixing seat capable of moving along the length direction of the clamping jaw seat is arranged on the clamping jaw seat, and a heightening module is detachably mounted at the top of the clamping jaw fixing seat through a quick connection structure. The top of the heightening module is detachably provided with a clamping jaw through a quick connection structure; the heightening module comprises at least one cushion block, and a plurality of cushion blocks are connected through quick connection structures; the quick connection structure comprises dovetail grooves and dovetail protrusions matched with the dovetail grooves, and the dovetail grooves are formed in the top of the clamping jaw fixing base and the top of the cushion block. The dovetail protrusions are arranged at the bottoms of the clamping jaws and the bottoms of the cushion blocks. According to the utility model, the positive and negative jaw remodeling of the clamping jaw and the remodeling of clamping jaws with different heights can be quickly realized, so that the clamping jaw remodeling time is shortened, and the processing efficiency is improved; and the workpiece clamping stability can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a combined quick-change clamping claw. Background Art

[0002] During the machining process, many high workpieces will be encountered. The workpieces are high and the center of gravity is at the top. Conventional clamping jaws can only clamp the lower end of the workpiece. Unstable clamping causes unstable machining and the risk of workpiece flying is prone to occur, resulting in low speed, small cutting depth and low machining efficiency when machining such high workpieces.

[0003] In addition, the existing conventional jaw structure is difficult to meet the processing requirements in terms of workpiece height and diameter, while the versatility of customized jaws is poor, the changeover time is long, and there are many parts and tools in the workshop. For the frequent changeover of parts processing, a fast and flexible jaw structure is needed that meets the machining stroke of the machine tool and can quickly change the clamping.

[0004] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In order to at least partially solve the above technical problems, the utility model provides a combined quick-change jaw, which can quickly realize the change of the positive and negative jaws of the jaws and the change of jaws of different heights, thereby reducing the jaw change time and improving the processing efficiency; it can also improve the stability of workpiece clamping.

[0006] The utility model adopts the following technical scheme: a combined quick-change claw, comprising a claw seat, the claw seat is a long strip structure, a claw fixing seat movable along its length direction is provided on the claw seat, a heightening module can be detachably installed on the top of the claw fixing seat through a quick connection structure, and a claw can be detachably installed on the top of the heightening module through a quick connection structure;

[0007] The height-increasing module includes at least one cushion block, and a plurality of cushion blocks are also connected by a quick-connect structure;

[0008] The quick-connect structure includes a dovetail groove and a dovetail protrusion arranged in cooperation with the dovetail groove. The dovetail groove is arranged at the top of the clamping claw fixing seat and the top of the cushion block; the dovetail protrusion is arranged at the bottom of the clamping claw and the bottom of the cushion block.

[0009] Furthermore, the quick-connect structure also includes an indexing pin, which is inserted between the claw fixing seat and the pad block connected thereto, between adjacent pad blocks, and between the claw and the pad block connected thereto; the indexing pin can be quickly inserted and removed.

[0010] Furthermore, the clamping claw seat is provided with a mounting groove along the length direction, a lead screw is rotatably arranged in the mounting groove, and the bottom of the clamping claw fixing seat is threadably connected with the lead screw.

[0011] Furthermore, a plurality of adjustment pads are arranged at intervals along the length direction of the claw seat on both sides of the bottom end thereof, and the adjustment pads are connected to the claw seat via adjustment bolts.

[0012] Furthermore, a hollow cavity is provided in the middle of the cushion block, and the indexing pins between adjacent cushion blocks and the indexing pins between the cushion block and the claw fixing seat are all inserted vertically downward from the bottom surface of the hollow cavity.

[0013] Furthermore, the adjusting bolt passes through the claw seat vertically and is threadedly connected to the adjusting cushion block.

[0014] Furthermore, slots are provided on both sides of the top of the clamping jaw, and an indexing pin between the clamping jaw and the pad block connected thereto is inserted vertically downward from the bottom surface of the slot; and a step structure is provided on the upper part of the clamping jaw for facilitating the positioning of the workpiece.

[0015] Furthermore, the clamping surface of the clamping claw is an inclined surface, and the inclined surface gradually inclines from the lower end to the upper end toward the direction of the workpiece clamped by the clamping claw;

[0016] The clamping surfaces are arranged on the side surfaces of the step structure parallel to the front and rear end surfaces of the clamping claws and on the front and rear end surfaces of the clamping claws.

[0017] Furthermore, both ends of the lead screw are rotatably connected to the claw seat; and both ends of the lead screw are sleeved with lead screw pads.

[0018] Furthermore, the clamping claw seat is installed on the workbench surface, and the clamping claw seat and the workbench surface are positioned by positioning keys and positioning strips.

[0019] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0020] 1. The height-increasing module of the utility model is integrated through at least one cushion block, adopts a modular design, and uses an indexing pin to quickly adjust the height to meet the needs of rapid changeover and processing of workpieces of different heights; compared with existing conventional jaws, the processing capacity is improved, and it is a universal, convenient and economical jaw structure.

[0021] 2. The utility model is provided with a clamping claw seat, which can be arranged on the workbench surface. The travel requirement in the diameter direction of the workpiece can be met by lengthening the length of the clamping claw seat, thereby reducing the clamping claw changing time of workpieces with different diameters.

[0022] 3. The utility model can realize the rapid change of the positive and negative claws of the clamping claws. Compared with the existing clamping claw structure, the single change time is shortened to within 5 seconds, and the change is fast and effective.

[0023] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the utility model;

[0025] Figure 2 It is a front view of the utility model;

[0026] Figure 3 It is a top view of the utility model;

[0027] Figure 4 It is a bottom view of the utility model.

[0028] In the figure,

[0029] 1-claw seat, 2-screw, 3-claw fixing seat, 4-shim, 5-indexing pin, 6-claw, 7-screw pad, 8-adjusting pad, 9-adjusting bolt, 10-dovetail groove, 11-dovetail protrusion, 12-locating key, 13-locating strip. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings. Example

[0031] like Figure 1-4 As shown together, the utility model provides a combined quick-change jaw, including a jaw seat 1. The jaw seat 1 is a long strip structure. Both sides of the bottom end of the jaw seat 1 are provided with a plurality of adjustment pads 8 arranged at intervals along its length direction. The adjustment pads 8 are connected to the jaw seat 1 through adjusting bolts 9. Specifically, the adjusting bolts 9 vertically pass through the jaw seat 1 and are threadedly connected to the adjusting pads 8.

[0032] A claw fixing seat 3 movable along its length direction is provided on the claw seat 1, and a height increasing module can be detachably installed on the top of the claw fixing seat 3 through a quick connection structure, and a claw 6 can be detachably installed on the top of the height increasing module through a quick connection structure.

[0033] The height-increasing module includes at least one cushion block 4, and a plurality of cushion blocks 4 are also quickly connected via a quick-connect structure.

[0034] Furthermore, the jaw seat 1 is provided with a mounting groove along the length direction, and a lead screw 2 is rotatably arranged in the mounting groove, and the bottom of the jaw fixing seat 3 is threadedly connected with the lead screw 2 .

[0035] The quick-connect structure includes a dovetail groove 10 and a dovetail protrusion 11 arranged in cooperation with the dovetail groove 10. The dovetail groove 10 is arranged at the top of the claw fixing seat 3 and the top of the cushion block 4, and the dovetail protrusion 11 is arranged at the bottom of the claw 6 and the bottom of the cushion block 4.

[0036] The quick-connect structure also includes an indexing pin 5, which is inserted between the claw fixing seat 3 and the pad 4 connected thereto, between adjacent pads 4, and between the claw 6 and the pad 4 connected thereto. The indexing pin 5 can be quickly plugged in and out. The dovetail groove 10, the dovetail protrusion 11 and the indexing pin 5 are used together so that the height-increasing module can be quickly installed and disassembled, thereby quickly adjusting the height of the claw 6 to meet the clamping requirements of high-sized workpieces, and the clamping stability is high. The indexing pin is provided to prevent the claw from being thrown out during the rotation of the lathe, and the indexing pin 5 can be quickly plugged in and out, reducing the time for adjusting the height of the claw 6.

[0037] The dovetail groove 10, the dovetail protrusion 11 and the indexing pin 5 cooperate between the claw fixing seat 3 and the cushion block 4 connected thereto, so that the cushion block 4 can be quickly withdrawn and inserted, and the positive claw and the reverse claw of the claw can be quickly exchanged. The positive claw and the reverse claw of the claw are exchanged by converting the clamping inner hole into the clamping outer circle. The existing conventional method is to remove the claw and then introduce it along the screw. This method is to unscrew the claw as a whole along the screw, turn the claw over, and then tighten the claw as a whole along the screw. The changeover time is long, and iron filings may stick to the screw in the middle process, which takes time to clean the filings. The combined quick-change claw described in the utility model only removes the upper claw 6 and fixes it in the reverse direction, which reduces the changeover time, and the changeover time can be completed within 30 seconds.

[0038] Furthermore, a hollow cavity is provided in the middle of the cushion block 4, and the indexing pins 5 between adjacent cushion blocks 4 and between the cushion block 4 and the claw fixing seat 3 are vertically inserted downward from the bottom surface of the hollow cavity.

[0039] Slots are arranged on both sides of the top of the clamping claw 6, and the indexing pin 5 between the clamping claw 6 and the cushion block 4 connected thereto is vertically inserted downward from the bottom surface of the slots.

[0040] Both ends of the lead screw 2 are rotatably connected to the claw seat 1; both ends of the lead screw 2 are sleeved with lead screw pads 7, which are washers or gaskets to prevent wear and can be replaced after wear, and can also adjust the gap between the claw fixing seat 3 and the claw seat 1.

[0041] The claw seat 1 is installed on the workbench surface, and a positioning key 12 and a positioning strip 13 are arranged between the claw seat 1 and the workbench surface for limiting positioning; the positioning key 12 is fixed to the bottom surface of the claw seat 1 by screws, and the positioning strip 13 is arranged in the keyway of the bottom surface of the claw seat 1. The arrangement of the positioning key 12 and the positioning strip 13 can prevent the claw 6 from being thrown off, improve the rigidity of the claw 6, and have high positioning accuracy.

[0042] The clamping surface of the clamping jaw 6 is an inclined surface, which gradually inclines from the lower end to the upper end toward the direction of the workpiece clamped by the clamping jaw 6. This can prevent the clamping jaw 6 from sliding backward when clamping a larger workpiece, and provide a counteracting force laterally to make the clamping jaw more stable.

[0043] The upper part of the clamping claw 6 is provided with a step structure for facilitating the positioning of the workpiece.

[0044] The side surfaces of the step structure parallel to the front and rear end surfaces of the clamping claw 6 and the front and rear end surfaces of the clamping claw 6 are all provided with the clamping surfaces to facilitate the interchange of the positive and negative jaws of the clamping claw.

[0045] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A combined quick-change jaw, characterized in that: The clamping claw seat (1) comprises a clamping claw seat (1) which is a long strip-shaped structure. The clamping claw seat (1) is provided with a clamping claw fixing seat (3) which can be moved along its length direction. The top of the clamping claw fixing seat (3) is detachably mounted with a height-increasing module via a quick-connect structure. The top of the height-increasing module is detachably mounted with a clamping claw (6) via a quick-connect structure. The height-increasing module comprises at least one cushion block (4), and a plurality of cushion blocks (4) are also connected via a quick-connect structure; The quick-connect structure comprises a dovetail groove (10) and a dovetail protrusion (11) arranged in cooperation with the dovetail groove (10); the dovetail groove (10) is arranged at the top of the clamping claw fixing seat (3) and the top of the cushion block (4); and the dovetail protrusion (11) is arranged at the bottom of the clamping claw (6) and the bottom of the cushion block (4).

2. A combined quick-change jaw according to claim 1, characterized in that: The quick-connect structure further comprises an indexing pin (5), the indexing pin (5) being inserted between the clamping claw fixing seat (3) and a cushion block (4) connected thereto, between adjacent cushion blocks (4), and between the clamping claw (6) and a cushion block (4) connected thereto; the indexing pin (5) can be quickly inserted and removed.

3. A combined quick-change jaw according to claim 1, characterized in that: The clamping claw seat (1) is provided with a mounting groove along the length direction, in which a lead screw (2) can be rotatably arranged, and the bottom of the clamping claw fixing seat (3) is threadably connected to the lead screw (2).

4. A combined quick-change jaw according to claim 1, characterized in that: A plurality of adjustment pads (8) are arranged at intervals along the length direction of the clamping claw seat (1) on both sides of the bottom end thereof, and the adjustment pads (8) are connected to the clamping claw seat (1) via adjustment bolts (9).

5. A combined quick-change jaw according to claim 2, characterized in that: A hollow cavity is provided in the middle of the cushion block (4), and the indexing pins (5) between adjacent cushion blocks (4) and the indexing pins (5) between the cushion block (4) and the claw fixing seat (3) are all inserted vertically downward from the bottom surface of the hollow cavity.

6. A combined quick-change jaw according to claim 4, characterized in that: The adjusting bolt (9) passes through the claw seat (1) in the vertical direction and is threadedly connected to the adjusting cushion block (8).

7. A combined quick-change jaw according to claim 2, characterized in that: Slots are provided on both sides of the top of the clamping claw (6), and an indexing pin (5) between the clamping claw (6) and a cushion block (4) connected thereto is vertically inserted downward from the bottom of the slot; a step structure is provided on the top of the clamping claw (6) to facilitate workpiece positioning.

8. A combined quick-change jaw according to claim 7, characterized in that: The clamping surface of the clamping claw (6) is an inclined surface, and the inclined surface gradually inclines from the lower end to the upper end in a direction close to the workpiece clamped by the clamping claw (6); The clamping surface is provided on the side surfaces of the step structure that are parallel to the front and rear end surfaces of the clamping claw (6) and on the front and rear end surfaces of the clamping claw (6).

9. A combined quick-change jaw according to claim 3, characterized in that: Both ends of the lead screw (2) are rotatably connected to the claw seat (1); and lead screw pads (7) are sleeved on both ends of the lead screw (2).

10. The combined quick-change jaw according to claim 1, characterized in that: The clamping claw seat (1) is installed on the workbench surface, and the clamping claw seat (1) and the workbench surface are positioned by a positioning key (12) and a positioning strip (13).

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