CN213645640U

CN213645640U - Flaring fixing tool for bearing connecting pin

Info

Publication number: CN213645640U
Application number: CN202021705686.1U
Authority: CN
Inventors: 白玉珍; 宋万万; 牟建伟
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-07-09
Anticipated expiration: 2030-08-17

Abstract

The utility model belongs to the technical field of the machine-building, a bearing connecting pin flaring fixing tool is disclosed. The tool comprises an upper support, a long tip, a short tip, a lower support, a guide limit pin and a cylindrical spiral compression spring. The fixing tool controls the compression amount of the cylindrical helical compression spring through the guide limiting pin, realizes accurate control of flaring force, and ensures the flaring fixing effect of the bearing connecting pin; moreover, the utility model discloses can once only accomplish connecting pin both ends while flaring fixed, promote the fixed efficiency of bearing connecting pin flaring by a wide margin, make in batches to the subassembly and have apparent economic benefits.

Description

Flaring fixing tool for bearing connecting pin

Technical Field

The utility model belongs to the technical field of the machine-building, a bearing connecting pin flaring fixing tool is related to.

Background

A bearing connecting pin flaring assembly in the terminal electric door position switch mechanism adopts a connecting pin to install a bearing into a notch, and realizes the installation and fixation of the bearing through flaring of inner holes at two ends of the connecting pin. However, the wall thickness of the notch base body for mounting the bearing is 2mm, the bearing base hole is phi 3H8, the length of the connecting pin is 10mm, the outer diameter is phi 3f7, and holes with the depth of 2mm and the diameter of phi 2mm are arranged at the two ends. In the prior assembly installation, a fitter adopts a special center to sequentially and respectively perform flaring fixation on the end heads at two sides, the method has the disadvantages of complex operation, low production efficiency, uncontrollable flaring force, frequent problems of serious deformation of parts, clamping stagnation of bearings or improper flaring and the like, and unstable product quality.

SUMMERY OF THE UTILITY MODEL

In order to solve complex operation, the flaring dynamics that exist among the unit mount and be difficult to control the scheduling problem, the utility model provides a bearing connecting pin flaring fixing tool. The method for simultaneously flaring the two ends of the connecting pin and controlling the flaring force by controlling the spring deformation amount is adopted to realize the rapid and accurate flaring fixation of the bearing connecting pin.

The technical scheme of the utility model is that:

a flaring fixing tool for a bearing connecting pin comprises an upper support, a long tip, a short tip, a lower support, a guide limiting pin and a cylindrical spiral compression spring.

The upper support and the lower support are arranged in an up-down opposite mode and form a square-back main body structure of the flaring fixing tool for the bearing connecting pin.

The two lower end surfaces of the upper support and the two upper end surfaces of the lower support are provided with matching holes; the upper support matching hole is connected with the lower support matching hole corresponding to the upper support matching hole in a matching mode through a guide limiting pin, and the guide limiting pin is used for sliding guide and motion stroke control of the upper support and the lower support when parts are assembled and disassembled and the lower support is closed and compressed.

Two cylindrical helical compression springs are respectively sleeved in the middle of the two guide limit pins and used for controlling flaring force and playing a reset role.

The middle parts of the upper support and the lower support are provided with matching holes, the coaxiality of the two matching holes is not more than 0.02mm, and the two matching holes are respectively used for installing a long tip and a short tip.

One end of each of the long center and the short center is a cylindrical pin and is respectively connected with the matching holes in the middle parts of the upper support and the lower support; the other end is a forming tip used for forming and fixing the flaring of the bearing connecting pin to be processed.

During the use, with this instrument clamping on the general vice of pincers worker, through the tight stroke of the tight vice of direction spacer pin restriction, realize the accurate control of flaring dynamics, finally accomplish the fixed work of bearing connecting pin flaring fast.

The utility model discloses beneficial effect does: the utility model discloses a bearing connecting pin flaring is fixed provides a convenient and reliable solution. The fixing tool controls the compression amount of the cylindrical spiral compression spring through the guide limiting pin, so that the accurate control of flaring force is realized, and the flaring fixing effect of the bearing connecting pin is ensured; moreover, the utility model discloses can once only accomplish connecting pin both ends while flaring fixed, promote the fixed efficiency of bearing connecting pin flaring by a wide margin, make in batches to the subassembly and have apparent economic benefits.

Drawings

FIG. 1 is a front view of a bearing connecting pin flare securing tool;

FIG. 2 is an isometric view of a bearing connecting pin flare securing tool;

FIG. 3 is a bearing connecting pin flare assembly;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

in the figure: 1. an upper support; 2. a long tip; 3. a short center; 4. a lower support; 5. guiding a limit pin; 6. the cylindrical helical compression spring.

Detailed Description

The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.

As shown in fig. 1-2, a flaring fixing tool for a bearing connecting pin comprises an upper support 1, a long tip 2, a short tip 3, a lower support 4, a guide limit pin 5 and a cylindrical helical compression spring 6.

The upper support 1 and the lower support 4 are arranged oppositely up and down, the upper support and the lower support form a square-shaped main body structure of the flaring fixing tool for the bearing connecting pin, and the outline size of the square-shaped main body structure is 90mm multiplied by 93mm multiplied by 25 mm.

Both the two lower end surfaces of the upper support 1 and the two upper end surfaces of the lower support 4 are provided with matching holes phi 10H7 with the pitch of holes being 72 +/-0.05 mm; the matching hole of the upper support 1 is matched and connected with the matching hole of the corresponding lower support 4 through a guide limit pin 5 with the outer diameter of phi 10g6 and the length of 82 mm.

The cylindrical spiral compression springs 6 are respectively sleeved in the middle of the two guide limit pins 5 and used for controlling flaring force and playing a reset role. The specification of the cylindrical helical compression spring 6 is YB1.2 × 14 × 22.

The middle parts of the upper support 1 and the lower support 4 are both provided with matching holes phi 10H7, the coaxiality of the two matching holes is not more than 0.02mm, and the two matching holes are respectively used for installing the long centre 2 and the short centre 3.

The long center 2 and the short center 3 are similar in structure, and one ends of the long center 2 and the short center 3 are both phi 10r6 cylindrical pins which are respectively connected with matching holes in the middle parts of the upper support 1 and the lower support 4; the other end is a forming tip used for forming and fixing the flaring of the bearing connecting pin to be processed.

The implementation steps are as follows:

(1) the fixing tool is mounted on a general vice for fitters, and the cylindrical helical compression spring 6 is ensured to be in a free state.

(2) Taking a component to be flared and fixed, and aligning holes at two ends of a bearing connecting pin with a long tip 2 and a short tip 3 respectively; and simultaneously clamping the vice until two side surfaces of the vice contact two ends of the guide limiting pin 5, and stopping clamping the vice so as to finish flaring and fixing of the bearing connecting pin of the assembly.

(3) And (5) loosening the vice until the long tip 2 and the short tip 3 are separated from the two ends of the bearing connecting pin, and taking down the assembly with the fixed flaring.

The above description of exemplary embodiments has been presented only to illustrate the technical solutions of the present invention, and is not intended to be exhaustive or to limit the present invention to the precise forms described. Obviously, many modifications and variations are possible in light of the above teaching to those skilled in the art. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to thereby enable others skilled in the art to understand, implement and utilize the invention in various exemplary embodiments and with various alternatives and modifications. It is intended that the scope of the invention be defined by the following claims and their equivalents.

Claims

1. A flaring fixing tool for a bearing connecting pin is characterized by comprising an upper support (1), a long tip (2), a short tip (3), a lower support (4), a guide limiting pin (5) and a cylindrical spiral compression spring (6);

the upper support (1) and the lower support (4) are arranged oppositely up and down, and form a square-shaped main body structure of the fixing tool; the two lower end surfaces of the upper support (1) and the two upper end surfaces of the lower support (4) are provided with matching holes; the matching hole of the upper support (1) is matched and connected with the matching hole of the corresponding lower support (4) through a guide limit pin (5), and the guide limit pin (5) is used for sliding guide and movement stroke control of the upper support and the lower support during part loading and unloading and closing-up compaction;

two cylindrical spiral compression springs (6) are respectively sleeved in the middle parts of the two guide limit pins (5) and used for controlling flaring force and playing a role in resetting;

one end of each of the long center (2) and the short center (3) is a cylindrical pin and is respectively connected with the matching holes in the middle parts of the upper support (1) and the lower support (4); the other ends of the center (2) and the short center (3) are forming centers which are used for flaring forming and fixing of the bearing connecting pin to be processed.

2. The flaring fixing tool for the bearing connecting pin according to claim 1, wherein the hole distance between two matching holes on the lower end surface of the upper support (1) and the hole distance between two matching holes on the upper end surface of the lower support (4) are both 72 mm plus or minus 0.05 mm.

3. The flaring fixing tool for the bearing connecting pin according to claim 1 or 2, wherein the outer diameter of the guide limit pin (5) is phi 10g6, and the length is 82 mm; the specification of the cylindrical spiral compression spring (6) is YB1.2 multiplied by 14 multiplied by 22.

4. The flaring fixing tool for the bearing connecting pin according to claim 1 or 2, characterized in that the aperture of the matching holes in the middle of the upper support (1) and the middle of the lower support (4) is phi 10H7, and the coaxiality of the two matching holes is not more than 0.02 mm.

5. The flaring fixing tool for the bearing connecting pin according to claim 3, wherein the aperture of the matching holes in the middle of the upper support (1) and the middle of the lower support (4) is phi 10H7, and the coaxiality of the two matching holes is not more than 0.02 mm.