CN203209731U - Double-cone elastic sleeve self-centering locking mechanism - Google Patents

Abstract

Double cone elastic sleeve self-centering locking mechanism, including clamp body, compression spring, elastic sleeve, lock nut. The elastic sleeve of the double-cone elastic sleeve self-centering locking mechanism fits in the inner tapered hole of the clamp body through the tapered surface at one end, and the tapered surface at the other end of the elastic sleeve cooperates with the inner tapered hole of the lock nut, and the lock nut Through the gap fit of the hole shaft on the outer cylinder of the clamp body, the lock nut is also provided with an internal thread connected with the external thread of the clamp body, and the axial movement generated by the rotation of the lock nut compresses the elastic sleeve and radially shrinks the clamping part; The above-mentioned elastic sleeve is provided with a compression spring at the end matched with the tapered surface of the clamp body, and when the lock nut is loosened, the elastic sleeve is pushed back to the free state, and the radial direction of the elastic sleeve is compressed by the lock nut and the tapered surface of the clamp body during application. Displacement, locking parts on the entire length of the inner hole of the elastic sleeve, the elastic sleeve is provided with uniformly distributed two-way contraction grooves in the axial direction to meet the elastic deformation and shrinkage space when the elastic sleeve shrinks radially.

Description

Double-cone elastic sleeve self-centering locking mechanism

technical field

The utility model relates to a self-centering clamp for shaft parts, which belongs to a mechanical transmission adjustment device and is mainly used for self-centering clamping of shaft parts. the

Background technique

In the clamping of shaft parts, self-centering chucks or elastic sleeve structures are mostly used. When the outer circle of the shaft is positioned as a precise reference, elastic sleeves are more widely used. At present, most of the elastic taper sleeves are used for positioning. The end face is axially pressed, and the radial shrinkage of the elastic tapered sleeve is poorly uniform at the large and small ends, which affects the positioning accuracy. the

Contents of the invention

In order to better realize the self-centering clamping of shaft parts, the utility model provides a double-cone elastic sleeve self-centering locking mechanism with simple structure, good interchangeability, stable precision and easy use. The double-cone surface is in contact with the conical hole, and the elastic sleeve shrinks and locks the parts evenly along the contact length to achieve precise positioning and clamping. the

The technical scheme of the utility model is: self-centering clamping double-cone elastic sleeve self-centering locking mechanism for shaft parts, including a clamp body, a compression spring, an elastic sleeve, and a lock nut. The elastic sleeve of the self-centering locking mechanism of the double-cone elastic sleeve fits in the inner tapered hole of the clamp body through the tapered surface at one end, and the tapered surface at the other end of the elastic sleeve cooperates with the inner tapered hole of the lock nut, and the lock nut Through the gap fit of the hole shaft on the outer cylinder of the clamp body, the coaxiality between the inner cone surface of the lock nut and the inner cone surface of the clamp body is ensured. The lock nut is also provided with an internal thread and an external thread connection of the clamp body. Rotate the lock nut, compress the elastic sleeve and radially contract the clamping part through the axial movement of the lock nut. The elastic sleeve is provided with a compression spring at the end that fits with the tapered surface of the clamp body, and the compression spring is installed in the blind hole of the clamp body, and when the lock nut is loosened, the elastic sleeve is pushed back to the free state, which is convenient for the assembly and disassembly of parts . the

In application, loosen the lock nut and put it into the part shaft, rotate the lock nut, compress the radial displacement of the elastic sleeve through the lock nut and the tapered surface of the clamp body, and lock the part on the entire length of the inner hole of the elastic sleeve. The elastic sleeve is provided with evenly distributed two-way contraction grooves along the axial direction, which can meet the elastic deformation and shrinkage space when the elastic sleeve shrinks radially. the

Description of drawings

Accompanying drawing 1 is the schematic diagram of the self-centering locking mechanism of the double cone elastic sleeve of the present invention. the

Detailed ways

Referring to the accompanying drawings, the utility model provides a double-cone elastic sleeve self-centering locking mechanism, which includes a clamp body 1, a compression spring 2, an elastic sleeve 3, and a lock nut 4. the

The elastic sleeve 3 of the self-centering locking mechanism of the double-cone elastic sleeve fits in the inner tapered hole of the clamp body 1 through the tapered surface at one end, and the tapered surface at the other end of the elastic sleeve 3 cooperates with the inner tapered hole of the lock nut 4 , the lock nut 4 is fitted on the outer cylinder of the clamp body 1 through the gap of the hole shaft to ensure the coaxiality of the inner cone surface of the lock nut 4 and the inner cone surface of the clamp body 1, and the lock nut 4 is also provided with an inner The thread is connected with the external thread of the clamping body 1, the locking nut 4 is rotated, and the elastic sleeve 3 is compressed and clamped in the radial direction through the axial movement of the locking nut 4 . the

The elastic sleeve 3 is provided with a compression spring 2 at the end matching with the tapered surface of the clamp body 1, and the compression spring 2 is installed in the blind hole of the clamp body, and when the lock nut 4 is loosened, the elastic sleeve is pushed back to a free state, Easy to assemble and disassemble parts. the

Claims (3)

1. The self-centering locking mechanism of the double-cone elastic sleeve is characterized in that it includes a clamp body, a compression spring, an elastic sleeve, and a lock nut. The tapered surface at the other end of the sleeve fits with the inner tapered hole of the lock nut, and the lock nut fits on the outer cylinder of the clamp body through the clearance of the hole shaft. the 2. The double-cone elastic sleeve self-centering locking mechanism as claimed in claim 1, characterized in that the lock nut in the structure is provided with an internal thread connected with the external thread of the clamp body at the same time, and the lock nut is rotated to pass through the lock. The axial movement of the tightening nut compresses the elastic sleeve and radially shrinks the clamping part. the 3. The double-cone elastic sleeve self-centering locking mechanism as claimed in claim 1, characterized in that the elastic sleeve described in the structure is provided with a compression spring at the end that cooperates with the tapered surface of the clamp body, and the compression spring device is installed in the clamp Specifically, in the blind hole, when the lock nut is loosened, the elastic sleeve is pushed back to the free state, and the elastic sleeve is provided with evenly distributed two-way contraction grooves along the axial direction to meet the elastic deformation and shrinkage of the elastic sleeve when it shrinks radially. space. the