Clamp capable of quickly changing inner diameter and outer diameter

Abstract

The utility model relates to the technical field of clamps, and discloses an inner and outer diameter quick-change clamp, which comprises an inner support jaw, a universal base and an outer clamp jaw, the universal base comprises a pull-down shaft, a threaded hole is formed in the middle of the pull-down shaft, and a conical screw is detachably mounted between the inner support jaw and the universal base; the inner supporting jaw and the outer clamping jaw can be nested on the universal base through the pin holes formed in the bottoms of the inner supporting jaw and the outer clamping jaw respectively, so that the mounting holes in the tops of the jaws are aligned with the threaded holes in the top of the universal base, and the inner supporting jaw and the outer clamping jaw can be fixed on the universal base through the conical screws and the locking screws respectively; in this way, the inner supporting jaw can be installed through one conical screw, the outer clamping jaw can also be fixed to the universal base through one locking screw, after the inner supporting jaw and the outer clamping jaw are fixed, the jaw position of the inner supporting jaw or the outer clamping jaw can be deformed by driving the side cam shaft, and therefore a product is clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to an inner and outer diameter quick-change clamp. Background Art

[0002] In the field of mechanical manufacturing and processing, the fixture plays an extremely important role. It not only ensures the stability and precision of the workpiece during the processing, but also greatly improves the production efficiency and processing quality. The traditional fixture for clamping the inner diameter is an internal support fixture, and the fixture for clamping the outer diameter is a three-claw fixture. The two structures are different, resulting in very different shapes and forms.

[0003] However, in general machine tool processing scenarios, the machine tool needs to face the processing of products with inner diameters and products with outer diameters. The two products require corresponding two types of fixtures. When we need to switch fixtures, we will face the process of disassembly and alignment of the fixtures. The steps are very cumbersome, and the handling process is also prone to cause damage to the tooling, which also increases the labor intensity of the workers. Utility Model Content

[0004] The utility model aims to provide an inner and outer diameter quick-change fixture, which can realize the rapid switching of two types of workpiece fixtures, and is convenient for clamping and positioning inner diameter workpieces and outer diameter workpieces.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inner and outer diameter quick-change clamp, comprising an inner supporting jaw, a universal base, and an outer clamping jaw, the universal base comprising a pull-down shaft, a threaded hole being opened in the middle of the pull-down shaft, a conical screw being detachably installed between the inner supporting jaw and the universal base, and a locking screw being detachably installed between the outer clamping jaw and the universal base through a thread.

[0006] Preferably, the universal base further includes round pins on both sides of the top, and a camshaft is connected through one side of the universal base.

[0007] Preferably, a sealing ring is installed on the top circumference of the universal base, and a mounting groove matching the sealing ring is opened on the top of the sealing ring.

[0008] Preferably, a mounting hole matching the conical screw is provided at the top of the inner support jaw, and the inner support jaw is threadedly connected to the universal base via the conical screw.

[0009] Preferably, a mounting hole matching the locking screw is provided at the top of the outer clamping jaw, and the inner support jaw is threadedly connected to the outer clamping jaw via the locking screw.

[0010] Preferably, the bottoms of the inner supporting jaws and the outer clamping jaws are both provided with pin holes matching the round pins.

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

[0012] In the utility model, the inner supporting jaws and the outer clamping jaws can be respectively nested on the universal base through the pin holes opened at the bottom, so that the mounting holes at the top of the jaws are aligned with the threaded holes at the top of the universal base, and the inner supporting jaws and the outer clamping jaws can be fixed to the universal base by the tapered screw and the locking screw respectively. In this way, the inner supporting jaws can be installed by a tapered screw, and the outer clamping jaws can be fixed to the universal base by a locking screw. After fixation, the jaw positions of the inner supporting jaws or the outer clamping jaws can be deformed by driving the side cam shaft, so as to clamp the product, which solves the problem that the machine tool needs to process and clamp products with inner diameters as well as products with outer diameters, and the two products require corresponding two types of clamps. When we need to switch the clamps, we will face the process of disassembling and aligning the clamps, and the steps are very cumbersome. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the universal base structure of the utility model;

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

[0015] Figure 3 This is a schematic diagram of the assembly structure of the universal base and the inner support jaws in the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the internal and external clamping jaws of the utility model;

[0017] Figure 5 It is a schematic diagram of the assembly structure of the universal base and the outer clamping jaws in the utility model.

[0018] In the figure: 1, inner support jaws; 2, universal base; 3, outer clamping jaws; 11, tapered screw; 21, pull-down shaft; 22, cam shaft; 23, round pin; 24, sealing ring; 25, threaded hole; 31, locking screw. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figure 1-5 The utility model provides a technical solution: an inner and outer diameter quick-change clamp, comprising an inner support jaw 1, a universal base 2, and an outer clamp jaw 3, wherein the universal base 2 comprises a pull-down shaft 21, and a threaded hole 25 is provided in the middle of the pull-down shaft 21;

[0021] A conical screw 11 is detachably mounted between the inner support jaw 1 and the universal base 2, and a locking screw 31 is detachably mounted between the outer clamp jaw 3 and the universal base 2 via a thread;

[0022] The inner supporting jaw 1 and the outer clamping jaw 3 can be respectively nested on the universal base 2 through the pin holes opened at the bottom, so that the mounting hole at the top of the jaws is aligned with the threaded hole 25 at the top of the universal base 2. In this way, the inner supporting jaw 1 and the outer clamping jaw 3 can be fixed to the universal base 2 by the conical screw 11 and the locking screw 31 respectively. In this way, the inner supporting jaw 1 can be installed by a conical screw 11, and the outer clamping jaw 3 can be fixed to the universal base 2 by a locking screw 31. After fixation, the jaw position of the inner supporting jaw 1 or the outer clamping jaw 3 can be deformed by driving the side cam shaft 22, thereby clamping the product.

[0023] Among them, the universal base 2 also includes round pins 23 on both sides of the top, and a camshaft 22 is connected through one side of the universal base 2. After the inner support jaw 1 or the outer clamp jaw 3 is fixed on the universal base 2, the inner support jaw 1 or the outer clamp jaw 3 can be quickly nested on the universal base 2 through the bottom pin hole to form a quick assembly.

[0024] Among them, a sealing ring 24 is installed on the top circumference of the universal base 2, and a mounting groove matching the sealing ring 24 is opened on the top of the sealing ring 24, a mounting hole matching the conical screw 11 is opened on the top of the inner support jaw 1, and the inner support jaw 1 is threadedly connected to the universal base 2 through the conical screw 11, and a mounting hole matching the locking screw 31 is opened on the top of the outer clamping jaw 3, and the inner support jaw 1 is threadedly connected to the outer clamping jaw 3 through the locking screw 31, and the bottoms of the inner support jaw 1 and the outer clamping jaw 3 are both opened with The round pin 23 matches the pin hole, and the inner supporting jaw 1 and the outer clamping jaw 3 can be respectively nested on the universal base 2 through the pin holes opened at the bottom, so that the mounting hole at the top of the jaws is aligned with the threaded hole 25 at the top of the universal base 2, so that the inner supporting jaw 1 and the outer clamping jaw 3 can be fixed to the universal base 2 by the tapered screw 11 and the locking screw 31 respectively. In this way, the inner supporting jaw 1 can be installed by a tapered screw 11, and the outer clamping jaw 3 can be fixed to the universal base 2 by a locking screw 31.

[0025] Working principle: When in use, the inner support jaw 1 and the outer clamp jaw 3 can be respectively nested on the universal base 2 through the pin holes opened at the bottom, so that the mounting hole at the top of the jaws is aligned with the threaded hole 25 at the top of the universal base 2, so that the inner support jaw 1 and the outer clamp jaw 3 can be fixed on the universal base 2 by the tapered screw 11 and the locking screw 31 respectively, so that the inner support jaw 1 can be installed by a tapered screw 11, and the outer clamp jaw 3 can be fixed on the universal base 2 by a locking screw 31;

[0026] When clamping an inner diameter or outer diameter workpiece, the workpiece can be placed at the corresponding inner support jaw 1 or outer clamp jaw 3, and the camshaft 22 can be driven so that the cam on the camshaft 22 deforms the jaw position of the inner support jaw 1 or the outer clamp jaw 3, thereby clamping the product.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments without departing from the principles of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inner and outer diameter quick-change clamp, comprising an inner support jaw (1), a universal base (2), and an outer clamp jaw (3), characterized in that: The universal base (2) includes a pull-down shaft (21), a threaded hole (25) is provided in the middle of the pull-down shaft (21), a conical screw (11) is detachably mounted between the inner support jaw (1) and the universal base (2), and a locking screw (31) is detachably mounted between the outer clamp jaw (3) and the universal base (2) via a thread.

2. The inner and outer diameter quick-change fixture according to claim 1, characterized in that: The universal base (2) also includes round pins (23) on both sides of the top, and a cam shaft (22) is connected through one side of the universal base (2).

3. The inner and outer diameter quick change fixture according to claim 2, characterized in that: A sealing ring (24) is installed on the circumference of the top of the universal base (2), and a mounting groove matching the sealing ring (24) is opened on the top of the sealing ring (24).

4. The inner and outer diameter quick change fixture according to claim 3, characterized in that: A mounting hole matching the conical screw (11) is provided at the top of the inner support jaw (1), and the inner support jaw (1) is threadedly connected to the universal base (2) via the conical screw (11).

5. The inner and outer diameter quick change fixture according to claim 4, characterized in that: A mounting hole matching the locking screw (31) is provided at the top of the outer clamping jaw (3), and the inner support jaw (1) is threadedly connected to the outer clamping jaw (3) via the locking screw (31).

6. The inner and outer diameter quick change fixture according to claim 5, characterized in that: The bottoms of the inner supporting jaw (1) and the outer clamping jaw (3) are both provided with pin holes matching the round pin (23).

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