Fixing clamp for machining tool

Abstract

The utility model relates to the technical field of machining auxiliary devices, in particular to a machining tool fixing clamp which comprises a base, a sleeve convenient to rotate by means of an external tool is rotatably installed at the left end of the base, and a stress cylinder is slidably installed at the inner end of the sleeve. A plurality of rectangular clamps used for clamping a workpiece are arranged on the inner side of the stress cylinder, the rectangular clamps have acting force for moving in the direction of workpiece pulling force under the action of friction force between the rectangular clamps and the workpiece, on the contrary, the threaded ring has acting force facing the right ends of the rectangular clamps, but the rectangular clamps cannot be disengaged from the threaded ring. At the moment, the clamping force of the rectangular clamp on the workpiece is increased along with the increase of the pulling force under the interaction of the force, so that the workpiece is clamped, the clamping force of the self-locking block on the workpiece is increased, and the slipping phenomenon can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing auxiliary devices, in particular to a mechanical processing tool fixing clip. Background Art

[0002] A device used to fix the processing object in the mechanical manufacturing process so that it occupies the correct position for construction or inspection is also called a fixture. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process in the process can be called a fixture, such as welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc.

[0003] After massive searches, it was found that the prior art publication number is CN114043399B, which discloses a multifunctional fixing tool for mechanical processing, specifically relating to the field of mechanical processing, including a base, the outer surface of which is sleeved with a mounting ring. The present invention sets a base, a clamp, a knob and a first slider, and the two sides of the clamp are respectively designed with curved surfaces and flat surfaces, which can be adjusted according to the shape of the part. When the processed part is an annular structure, the internal cylinder of the base can be started to drive the inner table to be pushed out of the storage groove and located inside the annular part, and then the second electromagnet at one end of the push rod is started. The second electromagnet will move toward the side of the first retaining ring through magnetic force, thereby pushing the push rod outward, so that the top block at the other end of the push rod supports the inner wall of the part. The top block is made of rubber material and can be well attached to the inner wall of the part. It is fixed inside and outside through the outer clamp, which greatly increases the fixing effect, and can fix parts of different specifications, greatly increasing the practicality of the fixing tool.

[0004] Therefore, based on the above search and in combination with the existing, during the tensile test of the workpiece, when the workpiece is clamped by the clamping jaws and then stretched, as the pulling force becomes larger and larger, the clamping force of the jaws may slip as the pulling force continues, causing the workpiece to slip and cause its position on the workbench to move, which will directly affect the processing accuracy. Even a small displacement may cause the product size to exceed the tolerance range. For this reason, we propose a machining tool fixing clamp. Utility Model Content

[0005] The purpose of the utility model is to provide a mechanical processing tool fixing clip to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical processing tool fixing clamp, comprising a base, a sleeve rotatably installed on the left end of the base for easy rotation with the help of external tools, a force-bearing cylinder slidably installed on the inner end of the sleeve, a plurality of rectangular clamps for clamping workpieces are arranged on the inner side of the force-bearing cylinder, the rectangular clamps are trapezoidal in shape, a connecting seat is fixedly installed on the left end of the base, and a supporting cylinder is sleeved on the outer surface of the connecting seat.

[0007] As a further solution of the utility model, a brake groove is provided on the outer surface of the connecting seat, a brake bump is fixedly mounted on the inner end of the supporting cylinder, and the brake bump is slidably mounted on the inner end of the brake groove.

[0008] As a further solution of the utility model, one end of the rectangular clamp close to the base is slidably connected to the left end of the support tube.

[0009] As a further solution of the utility model, a threaded ring is sleeved on the outer surface of the rectangular clamp, and the threaded ring is threadedly connected to the force-bearing cylinder.

[0010] As a further solution of the utility model, a limiting groove is fixedly installed on the outer surface of the threaded ring, and the groove clamps the rectangular clamp on the inner end of the threaded ring.

[0011] As a further solution of the utility model, a force-bearing block is fixedly installed on the outer surface of the force-bearing cylinder, a force-bearing groove is opened at the inner end of the sleeve, and the force-bearing block is slidably installed on the inner side of the force-bearing groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The rectangular clamp will have a force to move in the direction of the pulling force of the workpiece under the action of friction with the workpiece, and vice versa, the threaded ring will have a force toward the right end of the rectangular clamp, but the rectangular clamp cannot be separated from the threaded ring. At this time, under the interaction of forces, the clamping force of the rectangular clamp on the workpiece will increase as the pulling force increases, thereby achieving the clamping of the workpiece. The greater the clamping force of the self-locking block on the workpiece, the more effective it is to prevent slipping;

[0014] 2. The teeth on the end of the rectangular clamp that are close to each other are arc-shaped. The arc-shaped design allows for more contact surface with the workpiece, thereby obtaining more friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a fixing clip of a machining tool;

[0016] Figure 2 It is a schematic diagram of the internal structure of a fixing clip of a machining tool;

[0017] Figure 3 It is a schematic diagram of the disassembled structure of a fixing clip of a machining tool;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the support tube.

[0019] In the figure: 1, base; 2, sleeve; 3, rectangular clamp; 101, brake groove; 102, connecting seat; 103, support cylinder; 104, limit groove; 201, brake protrusion; 202, force cylinder; 203, force block; 301, threaded ring; 302, teeth; 303, return spring; 304, slide groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1: Please refer to Figure 1 , 2 A mechanical processing tool fixing clamp comprises a base 1, a sleeve 2 which is rotatably mounted on the left end of the base 1 and is convenient for rotation with the aid of an external tool, a force-bearing cylinder 202 is slidably mounted on the inner end of the sleeve 2, a plurality of rectangular clamps 3 for clamping a workpiece are arranged on the inner side of the force-bearing cylinder 202, the rectangular clamps 3 are trapezoidal in shape and gradually increase in size from left to right, and teeth 302 are fixedly mounted on the ends of the rectangular clamps 3 which are close to each other, so that the workpiece is clamped to prevent slipping, and the teeth 302 are arc-shaped, and the closer to the end of the rectangular clamp 3, the flatter it is, so that a circular workpiece can be clamped;

[0022] See also Figure 2 , a connecting seat 102 is fixedly installed on the left end of the base 1, and a supporting tube 103 is sleeved on the outer surface of the connecting seat 102, a braking groove 101 is opened on the outer surface of the connecting seat 102, and a braking convex block 201 is fixedly installed on the inner end of the supporting tube 103, and the braking convex block 201 is slidably installed on the inner end of the braking groove 101, the braking convex block 201 is triangular in shape, and the braking groove 101 is a triangular groove, which further enables the supporting tube 103 to be stably sleeved on the outer surface of the connecting seat 102;

[0023] See also Figure 3 , 4, one end of the rectangular clamp 3 close to the base 1 is slidably connected to the left end of the support tube 103. Specifically, a slide groove 304 is provided at one end of the rectangular clamp 3 close to the base 1, and a limiting groove 104 is provided at one end of the support tube 103 close to the rectangular clamp 3, and a return spring 303 is arranged inside the limiting groove 104. The upper end of the return spring 303 abuts against the right end of the rectangular clamp 3, and the lower end abuts against the support tube 103. The tension of the return spring 303 causes the rectangular clamps 3 to have a force to gather together.

[0024] See also Figure 2 , 3 The outer surface of the rectangular clamp 3 is sleeved with a threaded ring 301, and the threaded ring 301 is threadedly screwed with the force-bearing cylinder 202. The outer surface of the threaded ring 301 is fixedly welded with a limited slot, and the slot clamps the rectangular clamp 3 at the inner end of the threaded ring 301. When the force-bearing cylinder 202 rotates, the threaded ring 301 is driven to move left and right along the outer surface of the rectangular clamp 3, and under the action of the slot, the threaded ring 301 cannot rotate when it is stressed, so that the rectangular clamp 3 gathers together under the movement of the threaded ring 301 and cannot open to all directions. At the same time, as the pulling force increases, the gathering force becomes larger;

[0025] A force-bearing block 203 is fixedly welded on the outer surface of the force-bearing cylinder 202 , a force-bearing groove is opened at the inner end of the sleeve 2 , and the force-bearing block 203 is slidably installed on the inner side of the force-bearing groove.

[0026] Working principle:

[0027] When in use, the workpiece is placed on one end of the rectangular clamp 3 close to each other, and then the sleeve 2 is rotated. As the sleeve 2 rotates, the force-bearing cylinder 202 also rotates along with the rotation of the sleeve 2, thereby causing the threaded ring 301 to move toward the direction close to the base 1;

[0028] As the threaded ring 301 moves, the force that brings the rectangular clamps 3 closer together increases, ultimately achieving the effect of clamping the workpiece. During use, the workpiece will be subjected to a pulling force due to the requirements of some production steps. At this time, the rectangular clamp 3 will have a force to move in the direction of the pulling force of the workpiece under the action of the friction between the workpiece and the rectangular clamp 3. Conversely, the threaded ring 301 has a force toward the right end of the rectangular clamp 3, but the rectangular clamp 3 cannot be separated from the threaded ring 301. At this time, under the interaction of forces, the clamping force of the rectangular clamp 3 on the workpiece will increase as the pulling force increases, thereby achieving clamping of the workpiece.

[0029] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model can make equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, which should be covered by the protection scope of the utility model.

Claims

1. A mechanical processing tool fixing clamp, comprising a base (1), characterized in that: A sleeve (2) is rotatably mounted on the left end of the base (1) for easy rotation with the aid of an external tool, a force-bearing cylinder (202) is slidably mounted on the inner end of the sleeve (2), a plurality of rectangular clamps (3) for clamping workpieces are arranged on the inner side of the force-bearing cylinder (202), and the rectangular clamps (3) are trapezoidal in shape. A connecting seat (102) is fixedly mounted on the left end of the base (1), and a supporting cylinder (103) is sleeved on the outer surface of the connecting seat (102).

2. A mechanical processing tool fixing clip according to claim 1, characterized in that: The outer surface of the connecting seat (102) is provided with a braking groove (101), and the inner end of the supporting cylinder (103) is fixedly mounted with a braking lug (201), and the braking lug (201) is slidably mounted on the inner end of the braking groove (101).

3. A mechanical processing tool fixing clip according to claim 2, characterized in that: One end of the rectangular clamp (3) close to the base (1) is slidably connected to the left end of the support tube (103).

4. A mechanical processing tool fixing clip according to claim 3, characterized in that: The outer surface of the rectangular clamp (3) is sleeved with a threaded ring (301), and the threaded ring (301) is threadedly connected to the force-bearing cylinder (202).

5. A mechanical processing tool fixing clip according to claim 4, characterized in that: A limiting clamping groove is fixedly mounted on the outer surface of the threaded ring (301), and the clamping groove clamps the rectangular clamp (3) on the inner end of the threaded ring (301).

6. The mechanical processing tool fixing clip according to claim 1, characterized in that: A force-bearing block (203) is fixedly mounted on the outer surface of the force-bearing cylinder (202), a force-bearing groove is provided at the inner end of the sleeve (2), and the force-bearing block (203) is slidably mounted on the inner side of the force-bearing groove.

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