CN209773912U - Bushing pressing tool convenient to use and capable of achieving bushing pressing - Google Patents

Abstract

the utility model discloses a bush frock is pressed to portable axle sleeve, include: the pair of pressing heads are respectively provided with a guide cylinder, the guide cylinder is provided with a limiting groove along the axial direction, and the bottom of the limiting groove is provided with a limiting block, wherein the guide cylinder is matched with an inner hole of the bushing, and the limiting block is matched with the groove on the bushing; and the bottom plate is used for fixing the pressure heads and matching the opening positions of the two limiting grooves on the pair of pressure heads with the opening positions of the oil grooves on the shaft sleeve. The tool can quickly and accurately limit when the bushing is placed through the arrangement of the limiting blocks, accurately limits the placing position of the bushing, is simple and efficient to operate, has good press fitting quality, and avoids the situation that an oil passing groove is blocked due to uncertainty of naked eye observation; through the arrangement of the two pressure heads, the two bushings can be synchronously pressed, and the pressing quality and the pressing efficiency are guaranteed.

Description

bushing pressing tool convenient to use and capable of achieving bushing pressing

Technical Field

The utility model relates to a bush installation frock technical field, concretely relates to bush frock is pressed to portable axle sleeve.

background

The axle sleeve is the important part of constituteing gear oil pump (motor), and gear oil pump (motor) service pressure can reach 25MPa on the market at present, and current axle sleeve is the aluminum alloy material, if gear oil pump (motor) internal gear is direct to contact with the aluminium cover hole, then the aluminium cover hole will be conquassated soon, influences gear oil pump (motor) performance.

at present, the bushing made of composite materials is pressed in an inner hole of a shaft sleeve to improve the strength and the wear resistance. In order to avoid dry friction between the friction pairs in the gear oil pump (motor), two oil passing grooves are reserved on the shaft sleeve, oil is introduced, and a lubricating oil film is formed during operation. The corresponding bush is provided with a groove corresponding to the oil passing groove on the shaft sleeve.

The existing shaft sleeve press-fitting bushing is completely observed according to naked eyes when the position of the bushing is placed, so that the deviation of the press-fitting position often occurs, the oil passing hole in the shaft sleeve is partially or completely blocked, and the appearance and the service performance are affected. The existing tool can only press and mount one inner hole at a time, and the working efficiency is low. Therefore, a press fitting tool which meets the high requirement on the arrangement position of the bushing and is convenient, quick and efficient to press fit needs to be designed.

SUMMERY OF THE UTILITY MODEL

For overcoming prior art's defect, the utility model aims to provide a bush frock is pressed to portable axle sleeve to realize accurate restriction bush locating place.

Therefore, the utility model provides a bush frock is pressed to portable axle sleeve, include: the pair of pressing heads are respectively provided with a guide cylinder, the guide cylinder is provided with a limiting groove along the axial direction, and the bottom of the limiting groove is provided with a limiting block, wherein the guide cylinder is used for being matched with an inner hole of the bushing, and the limiting block is used for being matched with the groove on the bushing; and the bottom plate is used for fixing the pressure heads and matching the opening positions of the two limiting grooves on the pair of pressure heads with the opening positions of the oil grooves on the shaft sleeve, and the bottom plate is also provided with a plurality of counter bores for being connected with an oil press.

Further, the bottom plate has a mounting hole, the direction cylinder bottom has a location cylinder, location cylinder with mounting hole interference fit.

Further, the pressure head still includes the boss, the boss is located the direction cylinder bottom, wherein, the diameter of boss is greater than the diameter of direction cylinder, and is less than the internal diameter of axle sleeve.

Further, the thickness of the boss is 0.1-0.2 mm.

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

The tool can quickly and accurately limit when the bushing is placed through the arrangement of the limiting blocks, accurately limits the placing position of the bushing, is simple and efficient to operate, has good press fitting quality, and avoids the situation that an oil passing groove is blocked due to uncertainty of naked eye observation; through the arrangement of the two pressure heads, the two bushings can be synchronously pressed and mounted, so that the pressing and mounting quality and efficiency are ensured; meanwhile, the shaft sleeve bushing pressing tool effectively utilizes the chamfer of the bushing and the self weight of the shaft sleeve to carry out self-positioning, greatly simplifies the tool, and is more convenient and efficient.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

the accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a bushing;

FIG. 2 is a schematic sectional view of the bushing taken along line B-B;

FIG. 3 is a schematic structural view of a front bushing of the press-fitting bushing;

FIG. 4 is a schematic cross-sectional view of the front bushing of the press-fitting bushing;

FIG. 5 is a schematic structural view of the bushing after the bushing is press-fitted;

FIG. 6 is a schematic cross-sectional view of the bushing after press fitting;

Fig. 7 is a schematic top view of the portable bushing pressing tool of the present invention; and

3 fig. 3 8 3 is 3 a 3 cross 3- 3 sectional 3 view 3 of 3 the 3 portable 3 bushing 3 pressing 3 tool 3 along 3 the 3 step 3 from 3 a 3 to 3 a 3. 3

description of the reference numerals

1. A base plate; 2. A first ram;

3. A second ram; 4. A limiting block;

5. A bushing; 6. A shaft sleeve;

11. a countersunk hole; 12. Mounting holes;

21. a boss; 22. guide cylinder

23. Positioning the cylinder; 24. A limiting groove;

51. a groove; 61. And (4) passing through an oil groove.

Detailed Description

it should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1-8 illustrate some embodiments according to the present invention.

As shown in fig. 1-4, for the bushing 5 and the shaft sleeve 6 installed on the tool of the present invention, wherein the bushing 5 is a hollow cylinder, a groove 51 is formed on a side surface of the hollow cylinder, and an oil passing groove 61 is formed on an end surface of the shaft sleeve 6, as shown in fig. 5 and 6, when the bushing 5 is installed on the shaft sleeve 6, the groove 51 is opposite to the oil passing groove 61.

In one embodiment, as shown in fig. 7 and 8, a portable bushing pressing tool includes: the oil press comprises a bottom plate 1, a first pressing head 2, a second pressing head 3 and a limiting block 4, wherein two mounting holes 12 which are parallel to each other are formed in the middle of the bottom plate 1, a plurality of counter bores 11 are formed in the periphery of the bottom plate 1, and the counter bores 11 are used for fixing the bottom plate 1 on the oil press.

Specifically, as shown in fig. 8, the first pressure head 2 and the second pressure head 3 both include a positioning cylinder 23 and a guiding cylinder 22, the positioning cylinder 23 is installed on the bottom plate 1 in the installation hole 12 and in interference fit with the installation hole 12, a limiting groove 24 is provided on the side wall of the guiding cylinder 22, the limiting block 4 is installed at the bottom of the limiting groove 24 and in interference fit with the limiting groove 24, wherein the orientation of the limiting groove 24 on the first pressure head 2 and the second pressure head 3 is consistent with the opening direction of two oil grooves on the shaft sleeve.

Specifically, the height of the limiting block 4 is slightly smaller than the depth of the groove in the bushing, the diameter of the arc surface of the limiting block 4 is larger than the inner diameter of the bushing, and when the bushing 5 is installed on the guide cylinder 22 in a clearance fit mode, the groove 51 is opposite to the limiting block 4.

in one embodiment, as shown in fig. 8, the first pressing head 2 and the second pressing head 3 further include a boss 21, the boss 21 is located at the bottom of the guide cylinder 22, the boss 21 has a diameter larger than the diameter of the guide cylinder 22 and smaller than the inner diameter of the sleeve 6, the boss 21 has a thickness of about 0.1-0.2mm, and when the bush 5 and the sleeve 6 are assembled, the end of the bush 5 is recessed in the end face of the sleeve 6 by a certain distance.

use the utility model discloses a portable axle sleeve presses bush frock as follows with the process of bush pressfitting on the axle sleeve:

Firstly, processing and assembling the portable shaft sleeve bushing pressing tool according to the technical scheme, and fixing the tool on an oil press by using bolts through a counter bore 11 on a bottom plate 1; get a bush 5, the 5 hole of bush passes the guide cylinder 22 and the bush recess 51 card of first pressure head 2 and advances stopper 4, then get a bush 5 again, the 5 hole of bush passes the guide cylinder and the bush recess 51 card of second pressure head 3 and advances stopper 4, get axle sleeve 6 and place on two bushes 5, the chamfer combines on axle sleeve hole and the bush excircle, can play the fixed action, then impress bush 5 into the axle sleeve hole completely with the hydraulic press, take off after the pressure equipment is accomplished, accomplish the axle sleeve pressure equipment bush.

the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a bush frock is pressed to portable axle sleeve, its characterized in that includes:

The pair of pressure heads (2 and 3) are respectively provided with a guide cylinder (22), a limiting groove (24) is formed in the guide cylinder (22) along the axial direction, a limiting block (4) is installed at the bottom of the limiting groove (24), the guide cylinder (22) is used for being matched with an inner hole of the lining (5), and the limiting block (4) is used for being matched with a groove (51) in the lining (5); and

The bottom plate (1) is used for fixing the pressure heads (2 and 3) and enabling the opening positions of the two limiting grooves (24) on the pair of pressure heads (2 and 3) to be matched with the opening positions of the oil passing grooves (61) on the shaft sleeve (6), and the bottom plate (1) is further provided with a plurality of counter bores (11) for being connected with an oil press.

2. The portable shaft sleeve bushing pressing tool according to claim 1, wherein the bottom plate (1) is provided with a mounting hole (12), the bottom end of the guide cylinder (22) is provided with a positioning cylinder (23), and the positioning cylinder (23) is in interference fit with the mounting hole (12).

3. The portable shaft sleeve bushing pressing tool according to claim 2, wherein the pressing head (2, 3) further comprises a boss (21), the boss (21) is located at the bottom of the guide cylinder (22), and the diameter of the boss (21) is larger than that of the guide cylinder (22) and smaller than the inner diameter of the shaft sleeve (6).

4. the portable shaft sleeve bushing pressing tool according to claim 3, wherein the boss (21) is 0.1-0.2mm thick.