CN220227587U

CN220227587U - Tolerance ring with closed opening

Info

Publication number: CN220227587U
Application number: CN202321950411.8U
Authority: CN
Inventors: 王亮; 陈信勇
Original assignee: Xiamen Lizhou Precision Technology Co ltd
Current assignee: Xiamen Lizhou Precision Technology Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2023-12-22
Anticipated expiration: 2033-07-24

Abstract

The utility model discloses a tolerance ring with a closed opening, which relates to the technical field of tolerance rings and comprises a base band, wherein a plurality of bulges are arranged on the outer wall of the base band, positioning ports are formed in the top end and the bottom end of the base band, notches are formed in the two ends of the base band, the two ends of the base band are positioned on the same vertical line, and the base band is circular. According to the utility model, the positioning port is arranged, so that the baseband which is originally in a belt shape can be positioned by means of the positioning port and the cutter, the wire feeding precision is ensured, the axial dislocation of the device is small, the fluctuation of the opening size is small, the two ends of the baseband can be closely attached, the integral precision of the formed tolerance ring is higher, the opening of the tolerance ring is closed in a free state, the axial and radial dislocation of the tolerance ring is controlled within 0.2, the roundness is controlled within 0.2, and the fluctuation of the axial force is controlled within +/-5%.

Description

Tolerance ring with closed opening

Technical Field

The utility model relates to the technical field of tolerance rings, in particular to an open-closed tolerance ring.

Background

The tolerance ring is a circular ring-shaped metal elastic part, is formed by a plurality of wavy bulge structures on the side wall, is commonly used for connecting cylindrical matching components, generates larger acting force through deformation of the bulge structures, realizes the functions of fastening and limiting the components, simultaneously transmits torque between an inner component and an outer component by utilizing the torsional deformation principle, maintains interconnection between the inner component and the outer component, and can make up larger radial gaps between the components. The existing market mainly depends on foreign import, but the imported parts are larger in axial dislocation, the fluctuation of opening sizes is larger, the whole precision is smaller, and customization can not be performed according to the requirements of each application working condition.

Disclosure of Invention

The utility model aims to provide an open-closed tolerance ring, which solves the problems of larger axial dislocation, larger fluctuation of the size of an opening and smaller overall precision in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the tolerance ring with the closed opening comprises a base band, wherein a plurality of bulges are arranged on the outer wall of the base band, positioning ports are formed in the top end and the bottom end of the base band, and notches are formed in the two ends of the base band.

Preferably, the two ends of the base band are positioned on the same vertical line, and the shape of the base band is circular.

Preferably, the inner wall of the base band is provided with a plurality of depressions, and the shapes and the sizes of the depressions are respectively matched with those of the bulges.

Preferably, the positioning opening is semi-circular in shape.

Preferably, the notch is in a fifth circular arc shape, and the center of the notch and the center of the base band are positioned on the same horizontal plane.

Preferably, the centers of the positioning ports at the upper end and the lower end of the base band are positioned in the same vertical plane, and the positioning ports at the two sides of the base band are axially symmetrically distributed relative to the central axis of the base band.

Preferably, twenty-six protuberances are provided, and the protuberances are equiangularly distributed about the central axis of the base band.

Compared with the prior art, the utility model has the beneficial effects that:

through being provided with the locating hole for originally be banded baseband can fix a position with the help of locating hole and cutter, guaranteed to send line precision, thereby make the axial dislocation of device less, the fluctuation of opening size is little, and the both ends of baseband can paste tightly, and the whole precision of tolerance ring after the shaping is higher, and the opening closure of tolerance ring under the free state, tolerance ring axial and radial dislocation control are within 0.2, and the circularity control is within 0.2, and the fluctuation of axial force control is within + -5%.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic top view of the cross-section at A-A of the present utility model;

FIG. 3 is a schematic view of a portion of a product processing layout of the present utility model.

In the figure: 1. a base band; 2. a recess; 3. a notch; 4. a bulge; 5. and positioning the opening.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, an tolerance ring with a closed opening comprises a base band 1, wherein a plurality of bulges 4 are arranged on the outer wall of the base band 1, positioning ports 5 are formed at the top end and the bottom end of the base band 1, and notches 3 are formed at the two ends of the base band 1;

the inner wall of the base band 1 is provided with a plurality of depressions 2, and the shape and the size of the depressions 2 are respectively matched with those of the bulges 4;

twenty-six protuberances 4 are arranged in total, and the protuberances 4 are distributed at equal angles with respect to the central axis of the base band 1;

the two ends of the base band 1 are positioned on the same vertical line, and the shape of the base band 1 is a circular ring;

specifically, as shown in fig. 1 and 2, after the base band 1 is molded, in a free state, the openings are closed together, the axial and radial dislocation is controlled within 0.2, the roundness is controlled within 0.2, and the axial force fluctuation is controlled within +/-5%.

The positioning opening 5 is in a semicircular shape;

the centers of the positioning ports 5 at the upper end and the lower end of the base band 1 are positioned in the same vertical plane, and the positioning ports 5 at the two sides of the base band 1 are axisymmetrically distributed about the central axis of the base band 1;

specifically, as shown in fig. 1 and 3, the positioning opening 5 is formed by stamping a stamping die, and can be matched with a cutter for positioning when the strip-shaped base band 1 is processed and fed, so that each product line of the material is consistent.

The notch 3 is in a fifth circular arc shape, and the center of the notch 3 and the center of the base band 1 are positioned on the same horizontal plane;

specifically, as shown in fig. 1, 2 and 3, after being punched by using a circular ring type punching die, two parallel strip-shaped base belts 1 can be notched 3 at the cutting positions of two ends of the strip-shaped base belts 1, the straight line section of the part of the long head and the tail of the product is shortened, the stress is increased during forming, and the part of the tail of the two ends of the product after forming is tilted outwards to a certain point, so that the axial force of the product can be increased.

Processing flow

The method comprises the steps of firstly forming a strip-shaped baseband quarter round belt by using a No. 7 cutter, cutting off materials by using a No. 2 cutter, reforming a quarter round belt of a product by using a No. 5 reformed product, reforming a quarter round belt of the product by using a No. 7 cutter second layer cam, pressing the round belt again by using a No. 10 cutter to make the product round a bit more, and then forming the quarter round belt of the other side of the product by using a No. 6 cutter and a No. 5 second layer cam, wherein when the No. 5 cutter is pressed in place, the No. 10 cutter, the No. 7 cutter and the No. 6 cutter are retracted together, and then the No. 1 cutter is pressed downwards to use a No. 12 cutter auxiliary product, so that two wire ends just wind and cannot collide, and the device can be formed.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Tolerance ring with closed openings, comprising a base band (1), the outer wall of the base band (1) being provided with a plurality of ridges (4), characterized in that: positioning ports (5) are formed in the top end and the bottom end of the base band (1), and notches (3) are formed in the two ends of the base band (1).

2. The open-ended tolerance ring of claim 1, wherein: the two ends of the base band (1) are positioned on the same vertical line, and the shape of the base band (1) is circular.

3. The open-ended tolerance ring of claim 1, wherein: the inner wall of the base band (1) is provided with a plurality of depressions (2), and the shape and the size of the depressions (2) are respectively matched with those of the bulges (4).

4. The open-ended tolerance ring of claim 1, wherein: the positioning opening (5) is semi-circular in shape.

5. The open-ended tolerance ring of claim 1, wherein: the notch (3) is in a fifth circular arc shape, and the center of the notch (3) and the center of the base band (1) are positioned on the same horizontal plane.

6. The open-ended tolerance ring of claim 1, wherein: the centers of the positioning ports (5) at the upper end and the lower end of the base band (1) are positioned in the same vertical plane, and the positioning ports (5) at the two sides of the base band (1) are axisymmetrically distributed relative to the central axis of the base band (1).

7. The open-ended tolerance ring of claim 1, wherein: twenty-six bulges (4) are arranged in total, and the bulges (4) are distributed at equal angles relative to the central axis of the base band (1).