Transmission rear cover shell press-fitting device

Abstract

According to the transmission rear cover shell press-fitting device, a press cylinder of a press can adopt different press-fitting press heads to arrange the different press heads on the same movable assembly according to different press-fitting objects, and the press heads are moved to the needed press-fitting positions through movement of the assembly; due to the fact that the rear cover shell needs to be pressed into parts at different positions, the movable rear cover shell positioning assembly is designed, and the rear cover shell is driven by the sliding rail to move to the needed press-fitting position. And after the pressing head and the to-be-pressed position of the rear cover reach the pressing position, pressure is applied through the electronic pressing cylinder, and pressing is achieved. A plurality of press-fitting procedures are simultaneously realized on the same press, and the three press-fitting procedures of split charging of the bearing and the support assembly, press-fitting of the bearing, entering of the support assembly into a rear cover shell and press-fitting of a rear cover shell positioning pin are sequentially performed, so that the equipment integration degree is higher, the operation process is simplified, the overall working efficiency is improved, and the production cost is reduced. The method is suitable for large-scale industrial use and popularization.

Description

Technical Field

[0001] The present invention belongs to the field of AMT transmissions, and particularly relates to a press-fitting device for a transmission rear cover housing. Background Art

[0002] During the assembly process of the rear cover housing of a certain new heavy-duty truck AMT transmission, it is necessary to press-fit a bearing and a bearing support assembly into the bearing hole of the rear cover housing. At the same time, there is an interference fit between the bearing and the bearing support, and it is necessary to press-fit the bearing and the bearing support into a single assembly first. After the bearing assembly is press-fitted, it is also necessary to install a positioning pin into the positioning pin hole of the rear cover housing.

[0003] The existing assembly method usually presses the bearing and the bearing support into a bearing assembly on a bearing sub-assembly press first, and then presses the bearing assembly into the rear cover bearing hole on a rear cover bearing press. The positioning pin is assembled by manual hammering. This assembly method has the following problems:

[0004] 1. The processes are too scattered, occupying more workstations. Two presses are required. One press is used to press-fit the bearing and the bearing support and assemble them into a single assembly, and the other press is required to install the bearing assembly into the rear cover housing hole.

[0005] 2. The parts are scattered, and the transfer and handling time is long, resulting in low assembly efficiency. During production, the parts need to be delivered to two workstations. After the sub-assembly is completed at one workstation, the assembly needs to be transferred to another workstation for further assembly.

[0006] Generally speaking, the equipment required for assembly in the existing technology is relatively redundant, and the assembly process is cumbersome, resulting in low overall assembly efficiency. Summary of the Invention

[0007] The purpose of the present invention is to provide a press-fitting device for a transmission rear cover housing to solve the problem of low assembly efficiency when installing the transmission rear cover housing in the existing technology.

[0008] To solve the above technical problems, the present invention is implemented by adopting the following technical solutions:

[0009] A press-fitting device for a transmission rear cover housing includes a mounting frame. A press is provided at the upper end of the mounting frame, and a positioning pin press-fitting assembly is provided on one side of the upper part of the mounting frame. A bearing press head and a bearing support press head are arranged in parallel at the upper part of the mounting frame;

[0010] The bearing press head and the bearing support press head can slide horizontally on the mounting frame together, and can be respectively connected to the bottom of the press cylinder through their own sliding;

[0011] A housing positioning assembly is provided at the lower part of the mounting frame, and the housing positioning assembly can clamp the rear cover housing;

[0012] The described housing positioning assembly includes a longitudinal slide rail, on which a transverse slide rail is slidably arranged; on the transverse slide rail, a transition tray is slidably arranged.

[0013] On the transition tray, a bearing circumferential positioning tooling is arranged; on the transition tray, a housing positioning tray is arranged, and a through hole is opened on the housing positioning tray, and the bearing circumferential positioning tooling extends upward from the through hole; on the housing positioning tray, at least one housing support column and a positioning pin base are arranged; the shape of the housing support column matches the shape of the support hole of the rear cover housing.

[0014] The present invention also has the following features:

[0015] Further, a laterally extending press head slide rail is arranged on the upper part of the mounting frame, and the bearing press head and the bearing support press head can slide laterally along the press head slide rail respectively.

[0016] Further, the positioning pin press-fitting assembly includes a positioning pin pressing cylinder.

[0017] The lower part of the positioning pin pressing cylinder is connected with a press-fitting support block, the lower part of the press-fitting support block is a support part, and the positioning pin press head of the positioning pin pressing cylinder slidably penetrates through the upper part of the press-fitting support block and corresponds to the support part up and down.

[0018] Further, it also includes a bearing axial support member arranged on the transition tray.

[0019] The bearing circumferential positioning tooling is coaxially and slidably sleeved on the bearing axial support member, a compression spring assembly is arranged on the bearing circumferential positioning tooling, and the bearing circumferential positioning tooling can move vertically under the action of pressure through its own compression spring assembly.

[0020] Further, the bearing circumferential positioning tooling includes a positioning cylinder coaxially and slidably sleeved on the bearing axial support member.

[0021] At the upper end of the positioning cylinder, a bearing circumferential positioning ring is arranged, the upper part structure of the bearing circumferential positioning ring matches the structure of the bearing of the rear cover housing, and the inner diameter of the bearing circumferential positioning ring matches the outer diameter of the positioning cylinder.

[0022] A circular limiting plate is fixedly sleeved on the lower part of the positioning cylinder, and the compression spring assembly includes a plurality of compression springs evenly distributed circumferentially between the limiting plate and the bearing circumferential positioning ring.

[0023] Compared with the prior art, the present invention has the following technical effects:

[0024] The press-fitting device for the rear cover housing of the transmission according to the present invention is provided with a press. The pressing cylinder of the press can, according to different press-fitting objects, use different press-fitting heads. Different heads are arranged on the same movable component, and the heads are moved to the required press-fitting positions by the movement of the component. Since parts need to be pressed into the rear cover housing at different positions, a movable positioning component for the rear cover housing is designed, and the rear cover housing is driven by a slide rail to move to the required press-fitting position. After the heads and the positions to be press-fitted on the rear cover reach the press-fitting positions, pressure is applied by an electronic pressing cylinder to achieve press-fitting.

[0025] This kind of setting can enable multiple press-fitting processes to be achieved simultaneously on the same press. Just perform three press-fitting processes in sequence: the sub-assembly of the bearing and the support component, the press-fitting of the bearing, the entry of the support component into the rear cover housing, and the press-fitting of the positioning pin of the rear cover housing. While the equipment integration degree is higher, the operation process is simplified, the overall working efficiency is improved, and it is suitable for large-scale use and promotion in industry. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the structure of the rear cover housing and bearing of the prior art;

[0027] Figure 2 is a schematic diagram of the overall structure of the press-fitting device for the rear cover housing of the present invention;

[0028] Figure 3 is a schematic diagram of the connection relationship among the mounting bracket, the bearing pressing head and the bearing support pressing head of the present invention;

[0029] Figure 4 is a schematic diagram of the overall structure of the housing positioning component of the present invention;

[0030] Figure 5 is a schematic diagram of the overall structure of the transition tray of the present invention;

[0031] Figure 6 is a schematic diagram of the overall structure of the housing positioning tray of the present invention;

[0032] Figure 7 is a schematic diagram of the connection relationship between the bearing positioning tooling and the bearing support tooling of the present invention;

[0033] Figure 8 is a schematic diagram of the structure of the positioning pin press-fitting component of the present invention.

[0034] The meanings of the reference numerals in the drawings are as follows:

[0035] 1. Mounting frame; 2. Press, 201. Press cylinder; 3. Positioning pin press-fitting assembly; 4. Bearing press head; 5. Bearing support press head; 6. Rear cover housing; 7. Longitudinal slide rail; 8. Transverse slide rail; 9. Transition tray; 10. Bearing circumferential positioning tooling; 11. Housing positioning tray; 12. Housing support column; 13. Positioning pin base; 14. Press head slide rail; 15. Positioning pin press cylinder, 1501. Positioning pin press head; 16. Press-fitting support block; 17. Bearing axial support member; 18. Positioning cylinder; 19. Bearing circumferential positioning ring; 20. Limit plate; 21. Compression spring. Detailed implementation manner

[0036] It should be noted that all components in the present invention, unless otherwise specified, are all components known in the prior art. For example, the press uses a commonly known press.

[0037] The following gives specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent transformations made on the basis of the technical solutions of the present application fall within the protection scope of the present invention.

[0038] The rear cover housing 6 of a certain AMT transmission in the prior art is as Figure 1 shown. A through hole is provided in the middle thereof, and this through hole serves as a bearing hole, and a bearing and a bearing seat need to be installed inside; before installation, the bearing and the bearing seat also need to be installed together. In addition, a positioning pin installation hole for installing a positioning pin is also provided on the rear cover housing 6.

[0039] As Figures 2 to 6 shown, a press-fitting device for a transmission rear cover housing is characterized by comprising a mounting frame 1. A press 2 is provided at the upper end of the mounting frame 1, and a positioning pin press-fitting assembly 3 is provided on one side of the upper part of the mounting frame 1; a bearing press head 4 and a bearing support press head 5 are arranged in parallel on the upper part of the mounting frame 1;

[0040] The bearing press head 4 and the bearing support press head 5 can jointly slide horizontally on the mounting frame 1 and can be respectively connected to the press cylinder 201 of the press 2 through their own sliding;

[0041] A housing positioning assembly is provided at the lower part of the mounting frame 1, and the upper end face of the housing positioning assembly can be clamped with the rear cover housing 6; the housing positioning assembly includes a longitudinal slide rail 7, and a transverse slide rail 8 is slidably provided on the longitudinal slide rail 7; a transition tray 9 is slidably provided on the transverse slide rail 8;

[0042] A bearing circumferential positioning tooling 10 is provided on the transition tray 9, and the position where the bearing circumferential positioning tooling 10 is located corresponds to the position of the bearing hole of the rear cover housing 6;

[0043] A housing positioning tray 11 is provided on the transition tray 9. A through hole is provided on the housing positioning tray 11, and the bearing circumferential positioning tooling 10 extends above the through hole; a housing support column 12 and a positioning pin base 13 are provided on the housing positioning tray 11; the housing support column 12 is matched with the shape of the rear cover housing 6.

[0044] It should be noted that the position where the positioning pin base 13 is located corresponds to the position where the positioning pin mounting hole of the rear cover housing 6 is located.

[0045] The housing positioning tray 11 can move on the slide rail to make the bearing hole of the rear cover housing 6 correspond to the position of the pressing head. This belongs to the adaptive adjustment that those skilled in the art can achieve and will not be elaborated here.

[0046] As a preferred solution, a horizontally extending pressing head slide rail 14 is provided on the upper part of the mounting frame 1, and the bearing pressing head 4 and the bearing support pressing head 5 can slide horizontally along the pressing head slide rail 14 respectively.

[0047] As a preferred solution, the positioning pin pressing assembly 3 includes a positioning pin pressing cylinder 15;

[0048] The lower part of the positioning pin pressing cylinder 15 is connected with a pressing support block 16. The lower part of the pressing support block 16 is a support part. The positioning pin pressing head 1501 of the positioning pin pressing cylinder 15 penetrates through the upper part of the pressing support block 16 and corresponds to the support part in the spatial position.

[0049] The following further explains the connection relationship between the components in this embodiment:

[0050] The bearing pressing head 4 and the bearing support pressing head 5 are centrally installed on the pressing head slide rail 14 of the mounting plate 1.

[0051] The bearing pressing head 4 and the bearing support pressing head 5 move to change the left and right positions through the pressing head slide rail 14, and the parts are pressed through the upper pressing cylinder 201. The positioning pin is pressed through the positioning pin pressing cylinder 15 in the positioning pin pressing assembly on the side.

[0052] The housing positioning assembly mainly consists of three parts. The first part is the longitudinal slide rail 7 and the transverse slide rail 8, which mainly realize the front-back and left-right movements of the housing positioning assembly to reach the pressing position.

[0053] The second part is the housing positioning tray 11, which mainly realizes the positioning and support of the rear cover housing. At the same time, the positioning pin base 13 for pressing the positioning pin is also installed on the housing positioning tray 11.

[0054] The third part is the transition tray 9, whose main function is to install the bearing positioning seat, install the tray limit bolt 10-3-3, achieve the set pressing depth and realize the movement of the rear cover housing 6.

[0055] The bearing positioning seat installed on the transition tray 9 has two parts, namely the bearing circumferential positioning tooling 10 and the bearing axial support 17;

[0056] Among them, the bearing circumferential positioning tooling 10 is sleeved outside the bearing axial support 17, and the bearing circumferential positioning tooling 10 is equipped with a spring device and can move up and down under pressure. The bearing circumferential positioning tooling 10 is mainly used for bearing circumferential positioning, and at the same time, it withdraws under the upper pressure when pressing the bearing assembly, so that the rear cover housing can move downward and be press-fitted with the bearing as a whole. The bearing axial support 17 only plays the role of axial support for the bearing.

[0057] The positioning pin press-fitting mechanism is a C-type press-fitting structure, and the positioning pin is press-fitted in place through the action of the bottom press-fitting support block and the positioning pin press cylinder 15.

[0058] The working process of this embodiment is further described below:

[0059] The first step is part feeding: The operator places the bearing in the bearing circumferential positioning tooling 10 and the bearing axial support 17. Among them, the bearing circumferential positioning tooling 10 plays a role in circumferential limit for the bearing, and the bearing axial support 17 plays a role in axial support limit for the bearing;

[0060] Place the bearing support on the bearing support press head 5, place the positioning pin in the positioning pin base 13, and place the rear cover housing 6 on the housing positioning tray 11 to position the rear cover housing. The housing support column 12 plays a role in supporting the rear cover housing;

[0061] The second step is to press-fit the bearing support and the bearing assembly: The operator starts the press to enter the press-fitting process. The press head slide rail 14 drives the transition tray 9 to move to the pre-set press-fitting position. At the same time, the bearing support press head 5 moves to the actual required press-fitting position, so that the bearing support press head 5 is centered with the bearing circumferential positioning tooling 10. At this time, the press cylinder 201 moves downward until the press head contacts the bearing, and continues to move downward until the bearing support is pressed into the bearing.

[0062] Press the bearing and the support into the rear cover housing 6: The housing positioning tray 11 remains in its original position unchanged. Align the bearing press head 4 with the hole position of the rear cover housing 6. At this time, the positions of the bearing and the support remain unchanged. The bearing press head 4 moves downward until it contacts the rear cover housing, and the press head continues to move downward, causing the bearing positioning tooling to move downward, compressing the spring. The rear cover housing and the housing positioning tray 11 move downward together until the housing positioning tray 11 completes the press-fitting.

[0063] Step 2: Press-fit the positioning pin: The housing positioning assembly moves to the third positioning pin press-fitting position under the movement of the press head slide rail 14, aligning the positioning pin. The positioning pin press-fitting assembly moves upward, causing the press-fitting support block 16 to contact the positioning pin positioning tooling, providing a supporting effect. At this time, the positioning pin press head 1501 moves downward under the action of the positioning pin press cylinder 15 until it contacts the positioning pin, and the press head continues to move downward to complete the press-fitting of the positioning pin.

[0064] This cover press-fitting method has been batch-verified on-site, which can effectively improve the working efficiency of the assembly line and the automation level of part assembly.

[0065] As a preferred solution, it further includes a bearing axial support member 17 provided on the transition tray 9;

[0066] The bearing circumferential positioning tooling 10 is coaxially and slidably sleeved on the bearing axial support member 17. A compression spring assembly is provided on the bearing circumferential positioning tooling 10, and the bearing circumferential positioning tooling 10 can move vertically under pressure through its own compression spring assembly.

[0067] Further preferably, the bearing circumferential positioning tooling 10 includes a positioning cylinder 18 coaxially and slidably sleeved on the bearing axial support member 17;

[0068] A bearing circumferential positioning ring 19 is provided at the upper end of the positioning cylinder 18. The upper structure of the bearing circumferential positioning ring 19 matches the bearing structure of the rear cover housing 6, and the inner diameter of the bearing circumferential positioning ring 19 matches the outer diameter of the positioning cylinder 18;

[0069] A ring-shaped limiting plate 20 is fixedly sleeved on the lower part of the positioning cylinder 18. The compression spring assembly includes a plurality of compression springs 21 evenly distributed circumferentially between the limiting plate 20 and the bearing circumferential positioning ring 19.

[0070] This setting enables it to move up and down under pressure. The bearing circumferential positioning ring 19 is mainly used for the circumferential positioning of the bearing, and at the same time, it withdraws under the upper pressure when pressing the bearing assembly, so that the rear cover housing can move downward and be press-fitted with the bearing as a whole. The bearing axial support member 17 only plays the role of axially supporting the bearing.

Claims

1. A transmission rear cover housing press-fitting device, characterized in that: The mounting frame (1) comprises a press (2) disposed at the upper end of the mounting frame (1); a positioning pin press assembly (3) is disposed on one side of the upper portion of the mounting frame (1); a bearing press head (4) and a bearing support press head (5) are disposed in parallel on the upper portion of the mounting frame (1); The bearing pressure head (4) and the bearing support pressure head (5) can slide laterally on the mounting frame (1) together, and can be connected to the bottom (201) of the cylinder of the press (2) through their own sliding respectively; A housing positioning assembly is provided at the lower part of the mounting frame (1), and the housing positioning assembly can be clamped onto the rear cover housing (6); The housing positioning assembly comprises a longitudinal slide rail (7), a transverse slide rail (8) is slidably provided on the longitudinal slide rail (7); a transition tray (9) is slidably provided on the transverse slide rail (8); The transition tray (9) is provided with a bearing circumferential positioning tool (10); the transition tray (9) is provided with a shell positioning tray (11), the shell positioning tray (11) is provided with a through hole, and the bearing circumferential positioning tool (10) extends from the bottom to the top of the through hole; the shell positioning tray (11) is provided with at least one shell support column (12) and a positioning pin base (13); the shell support column (12) matches the shape of the support hole of the rear cover shell (6).

2. The transmission rear cover housing press-fitting device according to claim 1, characterized in that: A laterally extending pressure head slide rail (14) is arranged on the upper part of the mounting frame (1), and the bearing pressure head (4) and the bearing support pressure head (5) can slide laterally along the pressure head slide rail (14) respectively.

3. The transmission rear cover housing press-fitting device according to claim 2, characterized in that: The positioning pin press assembly (3) comprises a positioning pin press cylinder (15); The lower part of the positioning pin pressure cylinder (15) is connected to a press-fit support block (16), the lower part of the press-fit support block (16) is a support part, and the positioning pin pressure head (1501) of the positioning pin pressure cylinder (15) slides through the upper part of the press-fit support block (16) and corresponds to the upper and lower parts of the support part.

4. The transmission rear cover housing press-fitting device according to claim 3, characterized in that: It also includes a bearing axial support member (17) arranged on the transition tray (9); The bearing circumferential positioning tool (10) is coaxially slidably sleeved on the bearing axial support (17), and a compression spring assembly is provided on the bearing circumferential positioning tool (10). The bearing circumferential positioning tool (10) can move vertically under the action of pressure through its own compression spring assembly.

5. The transmission rear cover housing press-fitting device according to claim 4, characterized in that: The bearing circumferential positioning tool (10) comprises a positioning cylinder (18) coaxially slidably sleeved on the bearing axial support member (17); The upper end of the positioning cylinder (18) is provided with a bearing circumferential positioning ring (19), the upper structure of the bearing circumferential positioning ring (19) matches the structure of the bearing of the rear cover housing (6), and the inner diameter of the bearing circumferential positioning ring (19) matches the outer diameter of the positioning cylinder (18); The lower fixed sleeve of the positioning cylinder (18) is provided with an annular limiting plate (20), and the compression spring assembly comprises a plurality of compression springs (21) uniformly distributed along the circumferential direction between the limiting plate (20) and the bearing circumferential positioning ring (19).

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