CN117444581A

CN117444581A - Press-fitting tool and press-fitting method for power assembly suspension bushing

Info

Publication number: CN117444581A
Application number: CN202311467485.0A
Authority: CN
Inventors: 董恩惠; 高志勇; 李阳; 王欣扬; 袁博; 周宇博; 赵洪福; 张轩伟; 何雷
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-01-26

Abstract

The utility model relates to a power assembly suspension bushing press-fitting tool and a press-fitting method, wherein when a bushing is press-fitted, a pressing mechanism is lifted, a power assembly suspension bracket is placed on a supporting block and a supporting limiting block, a guide post penetrates through a bushing hole of the bushing, and the guide post partially enters the bushing hole under the action of a spring; after the power assembly suspension bracket is placed at a good position, the pressing mechanism is put down, the position of the power assembly suspension bracket is fixed, the bushing is sleeved at the upper end of the guide post, and the direction of the bushing is fixed through the positioning pin; placing a pressure head after the bushing is placed, and ensuring that the outer ring of the pressure head is pressed on the bushing outer tube; operating a press to control a pressure head to press in the bushing, pressing the bushing in place along with the spring to a lower limit position, lifting the pressure head, and taking down the power assembly suspension bracket from the tool; turning the direction of the power assembly suspension bracket, and starting to press the bushing at the other side; the utility model can finish two-order press fitting by only using one set of tool, has simple tool structure and high press fitting efficiency, and meets the quality requirement.

Description

Press-fitting tool and press-fitting method for power assembly suspension bushing

Technical Field

The utility model belongs to the technical field of tooling equipment, and relates to a power assembly suspension bushing press-fitting tool and a press-fitting method.

Background

At present, when the chassis of the passenger car is in a trial production stage and needs to be assembled in batches, a small-sized press is often needed to press the suspension bushing of the power assembly, the structure of a historical product is simpler, the press fitting can be completed by using a general tool or without using the tool, and the front support of the power assembly, which has the characteristics of complex structure and needs to press more than one bushing, is an aluminum alloy part and is easy to break if the stress is uneven in the press fitting process. The general tooling can not meet the press-fitting requirement of the part.

Patent document CN218904245U relates to the technical field of press-fit bushings, and discloses a press-fit bushing tool, which comprises a workbench, the spout that extends to its bottom and be the echelonment is seted up at the top of workstation, the right side fixed mounting of workstation has the motor that the output is towards left, the inboard left wall rotation of spout is installed the left side fixed connection's of the other end and motor output bi-directional threaded rod, fixed mounting has the guide bar that is located bi-directional threaded rod front side between the inboard left wall of spout, the outside sliding mounting of guide bar has two movable blocks that are symmetrical distribution, two the movable block all with the outside screw drive installation of bi-directional threaded rod, two the movable hole has all been seted up at the top of movable block. The tool for press-fitting the bushing has the advantages that bushing holes of pressed workpieces with different diameters are positioned with the bushing, the concentricity is good, and the phenomenon of deformation of the bushing caused by deflection during press-fitting can be avoided.

Patent document CN219234450U relates to the technical field of tooling equipment, and especially relates to a press bushing device, which comprises a mounting base, a positioning piece, a press head and a press mounting driving mechanism, wherein the mounting base is provided with a press mounting cavity, the positioning piece is arranged on the inner side wall of the press mounting cavity, the press mounting driving mechanism is arranged at the top of the mounting base, the press head is lifted and arranged in the press mounting cavity, the press mounting end of the press mounting driving mechanism penetrates through the top of the mounting base and then is fixedly connected with the press head, the side wall of the top of the positioning piece is provided with a positioning surface, a limiting step is concavely arranged on the side wall of the bottom of the positioning piece, and the limiting step and the bottom wall of the press mounting cavity form a positioning space. The bushing press-fitting device is simple in structure, low in cost, convenient to operate, high in bushing press-fitting efficiency, good in quality, safe to use and capable of reducing labor intensity of operators and difficulty in bushing press-fitting.

Patent document CN219005912U relates to a reaction mechanism for press fitting of a volute liner, which comprises a fixed template, wherein an elastic supporting component and a volute positioning component are arranged on the fixed template, a movable template is arranged above the elastic supporting component, a pressing component is arranged on the movable template, an upper top sliding plate is arranged below the fixed template and is connected with the movable template, an upper top block is arranged on the upper top sliding plate and slides in the fixed template and the volute positioning component, the elastic supporting component comprises a supporting frame and supporting springs, the supporting frame is symmetrically arranged on two sides of the fixed template, and the springs are arranged above the supporting frame; the spring shaft is sleeved on the inner periphery of the spring, the support plate is arranged on the upper portion of the support frame, and the spring shaft slides up and down in the support plate. The utility model has stable press fitting and can reduce cost after long-term use; can be widely applied; the liner is prevented from being pressed out of place.

Compared with the application, the tool supporting and positioning mode is different, and the degree of correlation with the application is low.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art and provides a power assembly suspension bushing press-fitting tool and a press-fitting method.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:

a power assembly suspension bushing press-fitting tool comprises a supporting block 2, a supporting limiting block 3, a pressing mechanism 4, a guide post 5 and a spring 6;

the power assembly suspension bracket 10 is arranged on the supporting block 2 and the supporting limiting block 3;

the guide post 5 is assembled in a hole of the supporting limiting block 3, and moves up and down in the supporting limiting block 3;

the power assembly suspension bracket 10 is positioned under the action of the supporting limiting block 3 and the guide post 5;

the cooperation of guide post 5 and spring 6 plays the effect that power assembly suspension support was fixed a position when guaranteeing that bush volume of impressing is correct.

Further, the lower end of the guide post 5 is provided with threads, and the guide post 5 can move up and down in the hole of the supporting limiting block through the large nut 7.

Further, the design of the limit opening on the support limit block 3 meets the requirement of bushing press fitting in two directions of the power assembly suspension bracket 10.

Further, a locating pin 8 is installed at the upper end of the guide post 5 and used for locating the bushing angle during press fitting.

Further, the power assembly suspension bushing press-fitting tool further comprises a bottom plate 1;

the bottom plate 1 is connected to a press workbench through bolts; the supporting block 2 and the supporting limiting block 3 are connected with the bottom plate 1 through bolts;

further, the power assembly suspension bushing press-fitting tool further comprises a pressing mechanism 4, and the pressing mechanism 4 is connected with the bottom plate 1 through bolts.

Further, a pressure head 9 is arranged, and the pressure head 9 is arranged on the press; concave holes are formed in the pressure head 9, and the convex structure of the inner pipe of the bushing is avoided.

Further, the guide post 5 is made of 45# steel; the bottom plate 1, the supporting block 2, the supporting limiting block 3, the pressing mechanism 4 and the pressing head group 9 are all made of 6061 aluminum.

A power assembly suspension bushing press fitting method is characterized in that:

when the bushing 11 is pressed, the pressing mechanism 4 is lifted, the power assembly suspension bracket 10 is placed on the supporting block 2 and the supporting limiting block 3, the guide post 5 penetrates through the bushing hole of the bushing 11, the guide post 5 partially enters the bushing hole under the action of the spring 6, and the power assembly suspension bracket is positioned under the action of the supporting limiting block 3 and the guide post 5;

after the power assembly suspension bracket 10 is placed at a good position, the pressing mechanism 4 is put down, the position of the power assembly suspension bracket is fixed, the bushing 11 is sleeved at the upper end of the guide post 5, and the direction of the bushing is fixed through the positioning pin 8;

placing a pressure head 9 after the bushing is placed, and ensuring that the outer ring of the pressure head 9 is pressed on the bushing outer tube;

the operating press controls the ram 9 to press in the bushing 11, and as the spring 6 is pressed to the lower limit position, the bushing is pressed in place, the ram 9 is raised, and the powertrain suspension bracket 10 is removed from the tooling.

Further, turning the direction of the powertrain suspension mount 10 begins to press fit the bushing on the other side.

The placing mode of the power assembly suspension bracket 10 on the tool is consistent with the above;

the arrangement mode and the press mounting mode of the bushing are consistent with the other side.

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

the two-order press fitting can be completed by only one set of tool, the tool is simple in structure, low in cost, high in press fitting efficiency and low in part damage probability, and the quality requirement of the assembly can be met.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a press-fitting tooling for a suspension liner of a powertrain according to the present utility model;

FIG. 2 is a schematic view of the lower end of the guide post in the hole of the support stopper through a large nut;

FIG. 3 is a schematic illustration of the press-fit bushing, lifting the hold-down mechanism, and placing the powertrain suspension brackets on the support blocks and support stops;

FIG. 4 is a schematic view of the positioning of the powertrain suspension bracket with the support stop block and guide post;

FIG. 5 is a schematic view of the bushing sleeved on the upper end of the guide post, and the bushing being fixed by a locating pin;

FIG. 6 is a schematic diagram showing the placement of the ram after the bushing is placed, with the outer race of the ram pressing against the bushing outer tube;

FIG. 7 is a schematic illustration of the ram pressing the bushing into place as the spring is pressed into the lower limit position;

FIG. 8 is a schematic view of a bushing beginning to press-fit the other side of the reversing powertrain suspension bracket;

FIG. 9a is a schematic illustration of the placement of parts in two directions, with the design of the limiting opening on the support stopper;

FIG. 9b is a schematic view of a press-fit side bushing;

FIG. 9c is a schematic view of the bushing on the other side of the press-fit assembly with the part turned on the tooling;

FIG. 10 is a schematic view of a locating pin passing through a groove of an inner tube of a bushing during press fitting;

FIG. 11 is a schematic view of the guide post assembled in the hole of the support stopper;

in the figure:

1. a bottom plate;

2. a support block;

3. a supporting limiting block;

4. a compressing mechanism;

5. a guide post;

6. a spring;

7. a large nut;

8. a positioning pin;

9. a pressure head;

10. a powertrain suspension bracket;

11. a bushing;

12. a bushing limiting block;

13. a bushing axis;

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model become more apparent, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the embodiments of the present utility model. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the utility model. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. 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. Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

The utility model is described in detail below with reference to the attached drawing figures:

1. the tool structure comprises:

referring to fig. 1 and 2, the tool main body comprises: the device comprises a bottom plate 1, a supporting block 2, a supporting limiting block 3, a pressing mechanism 4, a guide post 5 and a pressure head group 9. Wherein, besides the material of the guide post is 45# steel, the other structural materials are 6061 aluminum.

Wherein the bottom plate 1 is connected to a press table by bolts. The supporting block 2, the supporting limiting block 3 and the pressing mechanism 4 are connected with the bottom plate 1 through bolts.

The lower end of the guide post 5 is provided with threads, the guide post can move up and down in a hole of the supporting limiting block through a large nut 7 and cannot deviate from the hole, and the guide post realizes the function of moving up and down through a spring 6 and is used for positioning parts.

The guide post 5 can receive the effect of spring 6 supporting force, and the spring lower extreme supports on the hole bottom surface of supporting the stopper, and the spring upper end supports on the disc bottom surface of guide post 5, supports the guide post.

The guide post 5 realizes the function of moving up and down through the spring 6 and is used for positioning the parts.

After the large nut is screwed, the large nut only plays a limiting role, so that the guide post is not pulled out of the hole, and the guide post can move between an upper limit position and a lower limit position; the spring 6 is mounted on the guide post with its lower end against the support and its upper end against the lower surface of the guide post disc to provide a force to jack up the guide post so that its position will remain in the upper limit position without the guide post being pressed by the press.

The guide post 5 is connected with the large nut 7 by a screw pair, but the screw pair does not lock the guide post on the base, but only plays a limiting role.

The large nut 7 is arranged at the lower end of the guide post 5, so that the guide post 5 can move up and down in the supporting limiting block 3 and can not be separated from the hole due to the supporting force of the spring 6.

Referring to fig. 9a, 9b and 9c, the design of the limit opening on the support limit block 3 meets the requirement of bushing press-fitting in two directions of the power assembly suspension bracket 10;

the two directions, specifically, the "direction of turning the power train bracket 10, and the direction of starting to press-fit the bush on the other side" are referred to.

And the upper end of the guide post is provided with a locating pin 8 for locating the angle of the bushing during press fitting.

Referring to fig. 10, the bushing is provided with a convex positioning structure as shown in the figure, the angle between the axis of the bushing and the bracket is required during press fitting, and the positioning pin penetrates through the groove of the inner tube of the bushing during press fitting, so that the function of positioning the angle of the bushing is achieved.

The locating pin 8 arranged at the upper end of the guide post 5 can be matched with the groove in the inner tube of the bushing 11 to locate the bushing, so that the correct loading angle of the bushing 11 is ensured.

2. The tool using method comprises the following steps:

referring to fig. 3, when the bushing 11 is press-fitted, the pressing mechanism 4 is lifted, the power assembly suspension bracket 10 is placed on the supporting block 2 and the supporting limiting block 3, the guide post 5 passes through the bushing hole of the bushing 11, and at this time, the guide post 5 partially enters the bushing hole under the action of the spring 6.

Referring to fig. 11, the guide post 5 is fitted in the hole of the support stopper 3, and moves up and down in the support stopper 3.

The power assembly suspension bracket is positioned under the action of the supporting limiting block 3 and the guide post 5, and see fig. 4.

In order to prevent the parts from shaking under force during press fitting, a pressing mechanism 4 is designed to fix the position of a power assembly suspension bracket 10.

After the power assembly suspension bracket 10 is placed at a good position, the pressing mechanism 4 is put down to fix the bracket position, then the bushing 11 is sleeved at the upper end of the guide post 5, and the direction of the bushing is fixed through the positioning pin 8, and the figure 5 is referred to;

placing the pressure head 9 after the bushing is placed, and ensuring that the outer ring of the pressure head 9 is pressed on the bushing outer tube, referring to FIG. 6;

the lower end structural design of the pressure head 9 can ensure that the bushing is only stressed by the outer tube during press fitting, so that the bushing is prevented from being damaged, and the press fitting requirement of an assembly drawing is met. The upper end is sized to fit the press.

In fig. 6, the cross-sectional structure of the pressure head 9 is shown, because the concave hole is designed in the pressure head, the convex structure of the inner tube of the bushing is avoided, and only the outer tube is stressed when the pressure mounting is ensured, so that the inner tube is not contacted with the pressure head.

The press control ram 9 can now be operated to press the bushing 11 in, and as the spring 6 is pressed into the lower limit position, the bushing is pressed into place, see fig. 7, at which time the ram 9 can be raised to remove the part from the tooling.

Referring to fig. 8, turning the direction of the power assembly bracket 10, starting to press-fit the bushing on the other side, and placing the power assembly suspension bracket 10 on the tooling in the same manner as described above.

The tool main body is made of the aluminum alloy, is consistent with the material of the part, can prevent the part from being damaged during press fitting, and can lighten the weight of the tool by using the aluminum alloy, so that the tool is convenient to assemble and disassemble.

The structural design of the supporting block 2 and the supporting limiting block 3 can simultaneously meet the requirement of bushing press-fitting of parts in two directions.

The cooperation of guide post 5 and spring 6 can play the effect of part location when guaranteeing that bush volume of impressing is accurate.

The large nut 7 arranged at the lower end of the guide post 5 can enable the guide post 5 to move up and down in the supporting limiting block 4, and can not be separated from the hole due to the supporting force of the spring 6.

In order to prevent the parts from shaking under force during press fitting, a pressing mechanism 4 is designed to fix the positions of the parts.

The foregoing is merely illustrative of specific embodiments of the present utility model, and the scope of the utility model is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present utility model will be apparent to those skilled in the art within the scope of the present utility model. And all that is not described in detail in this specification is well known to those skilled in the art.

Claims

1. The utility model provides a power assembly suspension bush pressure equipment frock which characterized in that: comprises a supporting block (2), a supporting limiting block (3), a pressing mechanism (4), a guide post (5) and a spring (6);

the power assembly suspension bracket (10) is arranged on the supporting block (2) and the supporting limiting block (3);

the guide post (5) is assembled in a hole of the supporting limiting block (3), and moves up and down in the supporting limiting block (3);

the power assembly suspension bracket (10) is positioned under the action of the supporting limiting block (3) and the guide post (5);

the matching of the guide post (5) and the spring (6) can ensure the correct pressing-in amount of the bushing and simultaneously play a role in positioning the suspension bracket of the power assembly.

2. The powertrain suspension liner press-fitting tooling of claim 1, wherein:

the lower end of the guide post (5) is provided with threads, and the guide post (5) can move up and down in a hole of the supporting limiting block through a large nut (7).

3. The powertrain suspension liner press-fitting tooling of claim 1, wherein:

the design of the upper limit opening of the support limit block (3) meets the requirement of a power assembly suspension bracket (10)

The bushings in two directions are pressed.

4. The powertrain suspension liner press-fitting tooling of claim 1, wherein:

and a locating pin (8) is arranged at the upper end of the guide post (5) and used for locating the angle of the bushing during press fitting.

5. The powertrain suspension liner press-fitting tooling of claim 1, wherein: also comprises a bottom plate (1);

the bottom plate (1) is connected to a working table of the press machine through bolts; the supporting block (2) and the supporting limiting block (3) are connected with the bottom plate (1) through bolts.

6. The powertrain suspension liner press-fitting tooling of claim 1, wherein:

the device also comprises a pressing mechanism (4), and the pressing mechanism (4) is connected with the bottom plate (1) through bolts.

7. The powertrain suspension liner press-fitting tooling of claim 1, wherein:

a pressure head (9) is arranged, and the pressure head (9) is arranged on a press machine; concave holes are designed in the pressure head (9), and the convex structure of the inner pipe of the bushing is avoided.

8. The powertrain suspension liner press-fitting tooling of claim 1, wherein:

the guide post is made of 45# steel; the bottom plate, the supporting block, the supporting limiting block, the pressing mechanism and the pressing head are made of 6061 aluminum.

9. A power assembly suspension bushing press fitting method is characterized in that:

when the bushing (11) is pressed, the pressing mechanism (4) is lifted, the power assembly suspension bracket (10) is placed on the supporting block (2) and the supporting limiting block (3), the guide column (5) penetrates through a bushing hole of the bushing (11), the guide column (5) partially enters the bushing hole under the action of the spring (6), and the power assembly suspension bracket is positioned under the action of the supporting limiting block (3) and the guide column (5);

after the power assembly suspension bracket (10) is placed at a good position, the pressing mechanism (4) is put down, the position of the power assembly suspension bracket is fixed, the bushing (11) is sleeved at the upper end of the guide post (5), and the direction of the bushing is fixed through the positioning pin (8);

placing a pressure head (9) after the lining is placed, and ensuring that the outer ring of the pressure head (9) is pressed on the outer tube of the lining;

the bush (11) is pressed in by the control pressure head (9) of the operating pressure machine, the bush is pressed in place along with the spring (6) being pressed to the lower limit position, the pressure head (9) is lifted, and the power assembly suspension bracket (10) is taken off the tool.

10. The method of press fitting a powertrain suspension liner of claim 9, further comprising: turning the direction of the power assembly suspension bracket (10) and starting to press the bushing on the other side.