CN203437895U - Automatic aligning pressure head - Google Patents

Abstract

The utility model relates to an automatic aligning pressure head. The automatic aligning pressure head comprises a punching supporting shaft, a shaft sleeve and a plurality of deformable O-shaped rings, wherein the shaft sleeve is arranged at one side of the punching supporting shaft; and the O-shaped rings are fixed between the shaft sleeve and the punching supporting shaft. The automatic aligning pressure head has the advantages that automatic centering can be achieved when linear bearings of a shifting fork shaft can be assembled, the linear bearings are not pressed in place due to bad position degree of a shell or a punching cylinder can be effectively prevented, one oil cylinder can press more bearings simultaneously, so that the working efficiency is improved and the pressing qualification rate of the linear bearings is greatly increased.

Description

A self-aligning pressure head

technical field

The utility model belongs to the field of automobile manufacturing, and relates to an auxiliary tool for installing a shift fork shaft hole of a transmission case, in particular to an automatic centering pressure head capable of improving work efficiency and assembling a plurality of linear bearings at the same time.

Background technique

The automotive market has higher and higher requirements on the shifting performance of the transmission. In order to improve the shifting performance, it is generally used to add linear bearings in the shift fork shaft hole of the transmission housing to improve the smoothness of shifting. After pressing the linear bearing of the shift fork shaft When inside the housing, due to the positional tolerance of the housing and the verticality tolerance and precision requirements of the stamping cylinder, it is difficult to press several linear bearings into the linear bearing hole of the housing at the same time. Therefore, other suppliers generally use methods such as multiple press-fitting, improving tooling processing accuracy, and increasing press-fitting force to press-in. However, multiple press-fits have the following disadvantages: the press-fit is not in place, and it needs to be pressed again by hand; the forced press-fit will damage the linear bearing and the pressure head;

Multiple pressings will affect the assembly efficiency;

Chinese Patent Announcement No. CN201931257U, announced on August 17, 2011, the name is an automatic centering press-fitting mechanism. The application discloses an automatic centering press-fitting mechanism. The structure is divided into upper, middle and lower parts. Head, ball screw, screw bearing nut, fixed plate, pressure sleeve, upper guide column, positioning plate and upper linear bearing, the middle part includes lower guide column, lower pressure plate, lower pressure head, lower linear bearing, sensor, upper pressure block , a gland and a support plate, the lower part includes a base body, a support column, an adjustment wedge, a half-round key, a hand wheel, a bearing seat and a steel ball. The disadvantage is that the structure is relatively complicated, and it is difficult to simultaneously install multiple linear bearings in the linear bearing hole of the same casing.

Utility model content

The purpose of the utility model is to solve the defect that it is difficult to simultaneously press several linear bearings into the linear bearing hole of the shell at one time, and provide an automatic centering pressure head that improves work efficiency and assembles multiple linear bearings at the same time.

In order to achieve the above object, the utility model adopts the following technical solutions:

An automatic self-aligning indenter, the self-aligning indenter includes a stamping support shaft, a bushing for supporting a linear bearing, several deformable O-rings, the bushing is installed on one side of the stamping support shaft, and the O-shaped The ring is fixed between the shaft sleeve and the stamping support shaft. In this technical solution, the stamping support shaft plays the role of pushing the linear bearing into the linear bearing hole of the transmission housing when the linear bearing is assembled; the linear bearing is placed on the shaft sleeve, and the shaft sleeve plays the role of positioning and supporting the linear bearing; O The O-ring plays the role of supporting the sleeve and self-centering. If the linear bearing and the housing linear bearing hole are not concentric, the O-ring is deformed during the press-fitting process to automatically align the center; the linear bearing to be press-fitted Put it on the shaft sleeve of the self-centering pressure head, put the shell on the tooling with positioning function and fix it, the hydraulic cylinder moves up slowly, and the linear bearing enters the linear bearing hole of the shell through the chamfer of the front end of the linear bearing At this time, if the linear bearing and the linear bearing hole on the shell are not concentric, the linear bearing drives the bushing on the self-aligning pressure head to compress the O-ring, and the O-ring deforms to make the linear bearing concentric with the hole, so that The hydraulic cylinder can install the linear bearing in the housing linear bearing hole.

As a preference, a screw is provided at the end of the press support shaft on which the sleeve is sleeved, and a flat washer and a spring pad are fixed between the screw and the press support shaft. In this technical solution, the flat washer is used to prevent the shaft sleeve from coming out, the screw is used to fix the flat washer, and the spring pad is used to prevent loosening.

Preferably, the punching support shaft is provided with an annular groove matched with the O-ring.

The beneficial effects of the utility model are:

The utility model can not only automatically align the center when the linear bearing of the shift fork shaft is assembled, but also can effectively prevent the linear bearing from being improperly pressed due to the poor position of the shell or the stamping oil cylinder, and can make one oil cylinder press simultaneously Installing several bearings improves the work efficiency and greatly improves the qualified rate of linear bearing press-fitting.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is the installation diagram of the utility model.

In the figure, 1. Stamping support shaft; 2. Shaft sleeve; 3. O-ring; 4. Flat gasket; 5. Spring pad; 6. Screw; 7. Annular groove.

Detailed ways

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further explained:

Referring to Fig. 1, a self-aligning indenter, the self-aligning indenter includes a stamping support shaft 1, a bushing 2 for supporting a linear bearing, a pair of deformable O-rings 3, and the bushing 2 is installed on On one side of the stamping support shaft 1 , an O-ring 3 is fixed between the sleeve 2 and the stamping support shaft 1 . A screw 6 is provided at the end of the press support shaft 1 covered with the sleeve 2 , and a flat washer 4 and a spring pad 5 are fixed between the screw 6 and the press support shaft 1 . An annular groove 7 matched with the O-ring 3 is provided on the stamping support shaft (1).

Referring to Figure 2, put the linear bearing to be press-fitted on the bushing of the self-centering indenter, place the shell on the tooling with positioning function and fix it, and the hydraulic cylinder moves upward slowly, and through the reverse of the front end of the linear bearing, Angle, so that the linear bearing enters the linear bearing hole of the housing. At this time, if the linear bearing and the linear bearing hole on the housing are not concentric, the sleeve on the self-aligning pressure head is driven by the linear bearing to compress the O-ring, and the O-ring After the ring is deformed, the linear bearing is concentric with the hole, so that the hydraulic cylinder can install the linear bearing into the housing linear bearing hole.

In actual production, the O-ring can be directly filled with rubber, and the stamping support shaft and the shaft sleeve can be integrated with rubber, which can save the three parts of flat pad, spring pad, and screw, which can save costs and reduce production steps.

Claims (3)

1. A self-aligning indenter, characterized in that the self-aligning indenter includes a stamping support shaft (1), a bushing (2) for supporting a linear bearing, several deformable O-rings (3 ), the shaft sleeve (2) is installed on one side of the stamping support shaft (1), and the O-ring (3) is fixed between the shaft sleeve (2) and the stamping support shaft (1). 2. The self-aligning indenter according to claim 1, characterized in that, a screw (6) is provided at the end of the punching support shaft (1) on which the sleeve (2) is sleeved, so that Fix the flat washer (4) and spring pad (5) between the screw (6) and the stamping support shaft (1). 3. The self-aligning indenter according to claim 1 or 2, characterized in that the punching support shaft (1) is provided with an annular groove (7) matching the O-ring (3).

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