CN-224223720-U - Self-adaptive clamp

CN224223720UCN 224223720 UCN224223720 UCN 224223720UCN-224223720-U

Abstract

The utility model provides a self-adaptive clamp, which belongs to the technical field of clamps and comprises three clamping jaws which are annularly and alternately distributed, a fixing seat, a placing part which can move in a linear direction and is arranged on the fixing seat, wherein the placing part comprises a placing surface, the placing surface is used for bearing and clamping products, the placing part is positioned at the central position of the three clamping jaws and is hinged with the clamping jaws, the three clamping jaws gradually shrink inwards along with the bearing of the products pressing the placing part, and the self-adaptive clamp has the advantage that the self-adaptive adjustment of the clamping of the products is realized by matching the hinged structure design of the three clamping jaws which are annularly and alternately distributed and the fixing seat and the placing part which can move in a linear direction and is arranged at the central position of the clamping jaws. When the product is placed on the placement surface, the placement part moves along the linear direction along with the weight of the product or the action of external force, and the movement triggers the clamping jaw to synchronously shrink inwards, so that the stable clamping of the product is realized.

Inventors

Chen Bozhen
NIU ZIRU
QU YUNLING
LU PEI

Assignees

宁波职业技术学院

Dates

Publication Date: 20260512
Application Date: 20250616

Claims (10)

1. An adaptive clamp, comprising: Three clamping jaws which are distributed at intervals in a ring shape; The clamping jaw comprises a fixing seat, wherein three clamping jaws are hinged with the fixing seat, a placement part capable of moving in a linear direction is arranged on the fixing seat, the placement part comprises a placement surface, the placement surface is used for bearing and clamping a product, the placement part is positioned at the central positions of the three clamping jaws, and the placement part is hinged with the clamping jaws; the three clamping jaws gradually shrink inwards along with the fact that the bearing product is pressed against the placing part to perform linear movement.
2. The adaptive clamp according to claim 1, wherein the placement portion moves linearly in a vertical direction.
3. The self-adaptive clamp according to claim 1, wherein the fixing base is provided with at least two ratchet parts, the ratchet parts extend along the moving direction of the placing part, the side surfaces of the placing part are meshed with the ratchet teeth on the ratchet parts, the first ends of the ratchet parts are connected with the fixing base, and the second ends of the ratchet parts are movable ends.
4. The self-adaptive clamp according to claim 3, wherein an abutting seat is arranged on the fixing seat, an abutting elastic piece is arranged between the ratchet part and the abutting seat, the abutting elastic piece is in a compressed energy storage state, and the first end of the ratchet part can move linearly relative to the fixing seat.
5. The adaptive clamp according to claim 4, wherein the fixed seat is provided with a moving groove, the first end of the ratchet part is located in the moving groove, and the first end of the ratchet part can slide relative to the moving groove.
6. The adaptive clamp of claim 4, wherein the abutment spring is disposed proximate the first end of the ratchet portion.
7. The self-adaptive clamp according to claim 3 or 4, wherein a reset abutting piece is arranged in the fixing base, the reset abutting piece comprises an abutting cone table surface, a clearance is formed between the abutting cone table surface and the fixing base to form a movable space, a first end of the ratchet part is in abutting connection with the abutting cone table surface, and an operation part is arranged on the fixing base and in driving connection with the reset abutting piece so as to drive the reset abutting piece to perform reset movement.
8. The adaptive clamp according to claim 7, wherein the operating portion includes an operating lever that abuts against the return abutment, and the operating lever is hinged to the fixing base, and the return abutment is movable only in a linear direction.
9. The self-adaptive clamp according to claim 8, wherein the fixing base is provided with a mounting groove, the operating rod is arranged in the mounting groove, and a connecting shaft is arranged in the mounting groove and connected with the operating rod so as to realize the hinged arrangement between the operating rod and the fixing base.
10. The self-adaptive clamp according to claim 1, wherein a mounting rod is arranged on the fixing seat, a first hinging rod is fixedly arranged on the clamping jaw and hinged with the mounting rod, and a second hinging rod is hinged with the placing part and hinged with the first hinging rod.

Description

Self-adaptive clamp Technical Field The utility model belongs to the technical field of clamps, and particularly relates to a self-adaptive clamp. Background In modern manufacturing and precision inspection fields, the clamp is used as an important auxiliary device for fixing, positioning or supporting a workpiece, and the performance of the clamp directly influences the machining precision, the inspection quality and the production efficiency. Especially in the application scenario that three-dimensional scanning, automatic assembly, robot snatch etc. are higher to the positioning accuracy requirement, traditional fixed or manual regulation anchor clamps are difficult to satisfy the centre gripping demand of diversified product because of lacking self-adaptation ability. The existing clamp structure mostly adopts a rigid clamping mode, and usually relies on a manual adjustment or a pneumatic/electric driving system to realize clamping action. However, such clamps generally have problems of complex structure, slow response speed, poor adaptability and the like. When facing the products with irregular shapes and larger size difference, the clamps are often required to be frequently replaced or tedious manual adjustment is carried out, so that the working efficiency is reduced, and the measurement or processing precision is possibly influenced due to unstable clamping. Disclosure of utility model The utility model aims to solve the problems in the prior art and provides a self-adaptive clamping fixture. The utility model can be realized by the following technical scheme that the self-adaptive clamp comprises: Three clamping jaws which are distributed at intervals in a ring shape; The clamping jaw comprises a fixing seat, wherein three clamping jaws are hinged with the fixing seat, a placement part capable of moving in a linear direction is arranged on the fixing seat, the placement part comprises a placement surface, the placement surface is used for bearing and clamping a product, the placement part is positioned at the central positions of the three clamping jaws, and the placement part is hinged with the clamping jaws; the three clamping jaws gradually shrink inwards along with the fact that the bearing product is pressed against the placing part to perform linear movement. In the above-described adaptive jig, the placement portion is linearly moved in the vertical direction. In the self-adaptive clamp, the fixing seat is provided with at least two ratchet parts, the ratchet parts extend along the moving direction of the placing part, the side surfaces of the placing part are meshed with the ratchet teeth on the ratchet parts, the first ends of the ratchet parts are connected with the fixing seat, and the second ends of the ratchet parts are movable ends. In the self-adaptive clamp, the supporting seat is arranged on the fixing seat, the abutting elastic piece is arranged between the ratchet part and the supporting seat, the abutting elastic piece is in a compressed energy storage state, and the first end of the ratchet part can move linearly relative to the fixing seat. In the self-adaptive clamp, the fixed seat is provided with a moving groove, the first end of the ratchet part is positioned in the moving groove, and the first end of the ratchet part can slide relative to the moving groove. In the above-described adaptive clamp, the abutment elastic member is disposed near the first end of the ratchet portion. In the self-adaptive clamp, a reset abutting piece is arranged in the fixed seat and comprises an abutting conical table surface, a clearance is formed between the abutting conical table surface and the fixed seat to form a movable space, the first end of the ratchet part is in abutting connection with the abutting conical table surface, and an operation part is arranged on the fixed seat and in driving connection with the reset abutting piece so as to drive the reset abutting piece to reset. In the above-mentioned self-adaptive clamp, the operation portion includes an operation lever, the operation lever is fixed to the reset abutment, and the operation lever is hinged to the fixing base. In the self-adaptive clamp, the fixing seat is provided with the mounting groove, the operating rod is arranged in the mounting groove, and the connecting shaft is arranged in the mounting groove and connected with the operating rod, so that the hinging arrangement between the operating rod and the fixing seat is realized. In the self-adaptive clamp, the fixing seat is provided with the mounting rod, the clamping jaw is fixedly provided with the first hinging rod which is hinged with the mounting rod, and the first hinging rod is hinged with the second hinging rod which is hinged with the placing part. Compared with the prior art, the clamping jaw has the beneficial effects that through the design of the hinge structure of the three clamping jaws and the fixed seat which are distributed at intervals in a ring sha