Zero-point positioning flat tongs

Abstract

The utility model relates to the field of machining, in particular to zero-point positioning flat tongs which comprise a base and a tongs body, the tongs body is fixed on the base through a positioning blind rivet, a plurality of positioning pins matched with the base are installed at the lower end of the tongs body, the base is provided with positioning holes matched with the positioning pins, and the base is provided with a containing groove. A locking assembly matched with the positioning blind rivet is installed in the containing groove and comprises a first clamping block, a second clamping block, a limiting nut, a first end cover and a second end cover, wherein the first clamping block and the second clamping block slide in the containing groove through a lead screw, the limiting nut is installed on the lead screw, and the first end cover and the second end cover are installed at the two ends of the containing groove respectively. The same base is mounted on different stations or machine tools, and the positioning holes are matched with the positioning pins, so that the position of a workpiece can be changed without dismounting, and the zero position is kept unchanged. And the screw rod drives the first clamping block and the second clamping block to clamp the positioning blind rivet. And the positioning and fixing effects are achieved. The machining efficiency is improved, and errors are reduced. And the practicability and the convenience of the flat tongs are improved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing, in particular to a zero-point positioning flat-nose pliers. Background Art

[0002] Flat-nose pliers are a common clamp in the machining industry. They are widely used in various machine tools, especially in milling machines and drilling machines. In the machining process, flat-nose pliers can adopt different clamping methods according to the parts to perform various machining operations. Because of the simple structure and quick clamping, the flat-nose pliers save time and effort during machining, and are versatile and convenient, making them an indispensable and important tool in the field of machining.

[0003] Although the existing flat-nose pliers can achieve the effect of clamping parts, when the parts need to change the workstation or machine tool, due to the reinstallation after disassembly, the workpiece coordinates will also change accordingly, resulting in a lot of time to continuously calibrate the work coordinates to reduce the error caused by reinstallation, so that the machine tool stops production and processing, reducing production efficiency. Therefore, the utility model proposes a zero-point positioning flat-nose pliers. Summary of the invention

[0004] The utility model provides a zero-point positioning flat-nose pliers to solve the problems mentioned in the above background technology.

[0005] The purpose of the utility model is achieved by the following methods:

[0006] A zero-point positioning flat-nose pliers comprises a base and a pliers body, wherein the pliers body is fixed to the base by positioning rivets, a plurality of positioning pins cooperating with the base are installed at the lower end of the pliers body, the base is provided with positioning holes cooperating with the positioning pins, the base is provided with a receiving groove, a locking assembly cooperating with the positioning rivets is installed in the receiving groove, the locking assembly comprises a first clamping block and a second clamping block sliding in the receiving groove through a screw rod, a limiting nut installed on the screw rod, and a first end cover and a second end cover respectively installed at both ends of the receiving groove.

[0007] Furthermore, a limiting groove is provided on the clamp body, and a clamping assembly is installed in the limiting groove.

[0008] Furthermore, the clamping assembly includes a fixed block fixed in the limiting groove, a first slider and a second slider that can slide along the limiting groove through a threaded rod, and movable jaws installed on the first slider and the second slider.

[0009] Furthermore, a first step groove and a second step groove are respectively provided on both sides of the movable jaw.

[0010] Furthermore, two ends of the threaded rod protrude from the clamp body, and two ends of the threaded rod are provided with polygonal nuts.

[0011] Furthermore, a plurality of chip removal openings are provided on both sides of the clamp body.

[0012] Furthermore, both ends of the screw rod are provided with hexagonal holes.

[0013] The beneficial effects of the utility model are as follows: by installing the same base at different workstations or machine tools, and then by cooperating with the positioning holes and positioning pins, the workpiece on the pliers can be replaced at different workstations or machine tools without disassembly, and the zero point position of the workpiece is kept unchanged. The first clamping block and the second clamping block are driven by the screw rod to clamp the positioning pins. Thus, the positioning and fixing effect is achieved. Thus, the processing efficiency is improved, the error is reduced, and the practicality and convenience of the flat-nose pliers are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a zero-point positioning flat-nose pliers of the utility model;

[0015] Figure 2 It is an exploded schematic diagram of a zero-point positioning flat-nose pliers of the utility model;

[0016] Figure 3 This is a first cross-sectional view of a zero-point positioning flat-nose pliers according to the utility model;

[0017] Figure 4 This is a second cross-sectional view of a zero-point positioning flat-nose pliers according to the utility model;

[0018] The reference numerals in the figure are: 1-base, 2-clamp body, 3-positioning rivet, 4-positioning pin, 5-positioning hole, 6-accommodating groove, 7-screw, 8-first clamping block, 9-second clamping block, 10-limiting nut, 11-first end cover, 12-second end cover, 13-fixed block, 14-threaded rod, 15-first slider, 16-second slider, 17-movable jaw, 18-first step groove, 19-second step groove, 20-chip removal port, 21-polygonal nut, 22-hexagonal hole, 23-limiting groove. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] In this embodiment, refer to Figure 1-Figure 4The specific implementation of the zero-point positioning flat-nose pliers includes a base 1 and a pliers body 2. The pliers body 2 is fixed to the base 1 by a positioning rivet 3. A plurality of positioning pins 4 cooperating with the base 1 are installed at the lower end of the pliers body 2. The base 1 is provided with a positioning hole 5 cooperating with the positioning pin 4. The base 1 is provided with a receiving groove 6. A locking assembly cooperating with the positioning rivet 3 is installed in the receiving groove 6. The locking assembly includes a first clamping block 8 and a second clamping block 9 sliding in the receiving groove 6 through a screw rod 7, a limiting nut 10 installed on the screw rod 7, and a first end cover 11 and a second end cover 12 respectively installed at both ends of the receiving groove 6. When the workstation or machine tool needs to be replaced, the pliers body 2 can be disassembled or installed by simply rotating the screw rod 7, so that the workstation or machine tool can be replaced for processing without disassembling the workpiece. And the zero point position of the workpiece remains unchanged.

[0021] Furthermore, the base 1 is fixed to a workbench or other equipment by screws to ensure that it is stable and immovable. The positioning rivet 3 and the positioning pin 4 are fixed to the lower end of the pliers body 2 by threaded connection, and the screw rod 7 is connected to the first clamp block 8 and the second clamp block 9 by opposite threads. When the screw rod 7 rotates, the first clamp block 8 and the second clamp block 9 slide inward or outward at the same time. The limit nut 10 is fixed to the screw rod 7 by screws, so that the range of movement of the first clamp block 8 and the second clamp block 9 is limited, reducing the time spent on clamping or loosening the pliers body 2. The first end cover 11 and the second end cover 12 are respectively provided with through holes that fit the outer diameter of the screw rod 7, so that the two ends of the screw rod 7 fit the outer side of the end cover.

[0022] Furthermore, a limiting groove 23 is provided on the clamp body 2, and a clamping assembly is installed in the limiting groove 23.

[0023] Furthermore, the clamping assembly includes a fixed block 13 fixed in the limiting groove 23, a first slider 15 and a second slider 16 that can slide along the limiting groove 23 through a threaded rod 14, and a movable jaw 17 installed on the first slider 15 and the second slider 16. The limiting groove 23 allows the first slider 15 and the second slider 16 to slide only along the direction of the clamp body 2 without deviation. The fixed block 13 is fixed to the center of the limiting groove 23 by screws, and a bearing is installed at the center of the fixed block 13. The bearing cooperates with the threaded rod 14 through a keyway, and the position of the threaded rod 14 is firmly fixed by the glands and the limiting lock nut on both sides. The threaded rod 14 is provided with opposite threads at both ends to slide with the first slider 15 and the second slider 16 respectively. The first slider 15 and the second slider 16 slide inward or outward at the same time, and drive the movable jaw 17 to clamp or release the workpiece. The effect of centering clamping is achieved.

[0024] Furthermore, the movable jaw 17 is fixed to the first slider 15 and the second slider 16 respectively by screws, so that the movable jaw 17 can be replaced according to different parts requirements to meet different user needs.

[0025] Furthermore, the two sides of the movable jaw 17 are respectively provided with a first step groove 18 and a second step groove 19, so as to clamp the parts inwardly or outwardly, increase the clamping range of the flat-nose pliers, and perform low-position clamping, thereby increasing the processable range of the parts.

[0026] Furthermore, both ends of the threaded rod 14 protrude from the clamp body 2, and both ends of the threaded rod 14 are provided with polygonal nuts 21. This allows the parts to be quickly tightened or loosened by a hexagonal wrench.

[0027] Furthermore, the outer side of the polygonal nut 21 is provided with an inner hole, which is convenient for rotating with a hexagonal wrench or other corresponding tools, making the clamping or loosening process faster and more convenient. At the same time, the design of the polygonal nut 21 enhances the strength of the nut and improves its durability.

[0028] Furthermore, a plurality of chip removal openings 20 are provided on both sides of the pliers body 2, so that the cutting fluid and iron chip residues generated during processing can flow out through the chip removal openings 20, reducing the wear on the flat-nose pliers and the difficulty of cleaning.

[0029] Furthermore, hexagonal holes 22 are provided at both ends of the screw rod 7, so that the positioning rivet 3 can be loosened at both ends, which is convenient for operation from different angles, improving the flexibility and convenience of operation. At the same time, the design of the hexagonal holes 22 allows for quick operation using corresponding tools such as an hexagonal wrench or an electric screwdriver, further improving work efficiency.

[0030] The beneficial effects of the utility model are as follows: by installing the same base 1 at different workstations or machine tools, and then by cooperating with the positioning hole 5 and the positioning pin 4, the workpiece on the pliers body 2 can be replaced at different workstations or machine tools without disassembly, and the zero point position of the workpiece is kept unchanged. The first clamping block 8 and the second clamping block 9 are driven by the screw rod 7 to clamp the positioning rivet 3. Thus, the positioning and fixing effect is achieved. Thus, the processing efficiency is improved, the error is reduced, and the practicality and convenience of the flat-nose pliers are improved.

[0031] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A zero-point positioning flat-nose pliers, comprising a base (1) and a pliers body (2), wherein the pliers body (2) is fixed to the base (1) by means of positioning rivets (3), a plurality of positioning pins (4) cooperating with the base (1) are installed at the lower end of the pliers body (2), the base (1) is provided with positioning holes (5) cooperating with the positioning pins (4), the base (1) is provided with a receiving groove (6), a locking assembly cooperating with the positioning rivets (3) is installed in the receiving groove (6), the locking assembly comprises a first clamping block (8) and a second clamping block (9) sliding in the receiving groove (6) through a screw rod (7), a limiting nut (10) installed on the screw rod (7), and a first end cover (11) and a second end cover (12) respectively installed at both ends of the receiving groove (6).

2. The zero-point positioning flat-nose pliers according to claim 1, characterized in that: The clamp body (2) is provided with a limiting groove (23), and a clamping assembly is installed in the limiting groove (23).

3. The zero-point positioning flat-nose pliers according to claim 2, characterized in that: The clamping assembly comprises a fixed block (13) fixed in the limiting groove (23), a first slider (15) and a second slider (16) which can slide along the limiting groove (23) via a threaded rod (14), and a movable jaw (17) mounted on the first slider (15) and the second slider (16).

4. The zero-point positioning flat-nose pliers according to claim 3, characterized in that: A first step groove (18) and a second step groove (19) are respectively provided on both sides of the movable jaw (17).

5. The zero-point positioning flat-nose pliers according to claim 3, characterized in that: Both ends of the threaded rod (14) protrude from the pliers body (2), and both ends of the threaded rod (14) are provided with external hexagonal nuts.

6. The zero-point positioning flat-nose pliers according to claim 1, characterized in that: A plurality of chip removal openings (20) are provided on both sides of the pliers body (2).

7. The zero-point positioning flat-nose pliers according to claim 1, characterized in that: Both ends of the screw rod (7) are provided with hexagonal holes (22).

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