Transmission rear cover shell press fitting device

Abstract

The application discloses a transmission rear cover shell press-fitting device, a pressing cylinder of a press machine can adopt different press-fitting pressing heads to arrange different pressing heads on a same movable assembly according to different press-fitting objects, the pressing heads are moved to required press-fitting positions through movement of the assembly, the movable rear cover shell positioning assembly is designed to move the rear cover shell to the required press-fitting position through a slide rail since the rear cover shell needs to be pressed into parts at different positions, after the pressing heads and the rear cover to be pressed reach the press-fitting positions, pressure is applied through an electronic pressing cylinder to realize press-fitting. Multiple press-fitting processes are simultaneously realized on the same press machine, three press-fitting processes of bearing and support assembly disassembly, press-fitting bearing, support assembly into the rear cover shell and press-fitting rear cover shell positioning pin are sequentially and sequentially performed, the equipment has higher integration degree, simultaneously simplifies an operation process, improves overall working efficiency, and is suitable for large-scale use and popularization in industry.

Description

Technical Field

[0001] This invention belongs to the field of AMT transmissions, and specifically relates to a transmission rear cover housing press-fitting device. Background Technology

[0002] During the assembly of the rear cover housing of a new type of heavy-duty truck AMT transmission, it is necessary to press the bearing and bearing support assembly into the bearing hole of the rear cover housing. At the same time, the bearing and bearing support are interference fit, so the bearing and bearing support need to be pressed into a single assembly first. After the bearing assembly is pressed into place, the locating pin needs to be installed into the locating pin hole of the rear cover housing.

[0003] The existing assembly method typically involves first pressing the bearing and bearing support into a bearing assembly on a bearing sub-assembly press, and then pressing the bearing assembly into the bearing hole of the rear cover on a rear cover bearing press. The locating pin is then assembled manually by hammering. This assembly method has the following problems: 1. The process is too scattered and occupies too many workstations. Two presses are needed: one presses to install the bearing and bearing support into a single component, and the other press is needed to install the bearing assembly into the hole of the back cover housing.

[0004] 2. The parts are scattered, the transfer and handling time is long, and the assembly efficiency is low. During production, the parts need to be delivered to two workstations. After the parts are assembled at one workstation, the components need to be transferred to the other workstation for further assembly.

[0005] In general, existing technologies require complex equipment and have cumbersome assembly processes, resulting in low overall assembly efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a gearbox rear cover housing press-fitting device to solve the problem of low assembly efficiency when installing gearbox rear cover housings in the prior art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A gearbox rear cover housing press-fitting device includes a mounting frame, a press is provided at the upper end of the mounting frame, a positioning pin press-fitting assembly is provided on one side of the upper part of the mounting frame, and a bearing press head and a bearing support press head are arranged side by side on the upper part of the mounting frame. The bearing pressure head and bearing support pressure head can slide laterally together on the mounting frame, and can be connected to the bottom of the press cylinder of the press through their own sliding. The mounting bracket is provided with a housing positioning component at its lower part, which can hold the rear cover housing in place. The housing positioning assembly includes a longitudinal slide rail, on which a transverse slide rail is slidably mounted; and on which a transition tray is slidably mounted. The transition tray is provided with a bearing circumferential positioning fixture; the transition tray is provided with a housing positioning tray, the housing positioning tray has a through hole, and the bearing circumferential positioning fixture extends from bottom to top through the through hole; the housing positioning tray is provided with at least one housing support column and a positioning pin base; the shape of the housing support column matches the support hole of the rear cover housing.

[0008] The present invention also has the following features: Furthermore, the upper part of the mounting bracket is provided with a laterally extending pressure head slide rail, and the bearing pressure head and the bearing support pressure head can slide laterally along the pressure head slide rail respectively.

[0009] Furthermore, the positioning pin press-fit assembly includes a positioning pin press cylinder; The lower part of the positioning pin cylinder is connected to a press-fit support block, the lower part of the press-fit support block is a support part, and the positioning pin head of the positioning pin cylinder slides through the upper part of the press-fit support block and corresponds vertically to the support part.

[0010] Furthermore, it also includes a bearing axial support component mounted on the transition tray; The bearing circumferential positioning fixture is coaxially slidably sleeved on the bearing axial support. The bearing circumferential positioning fixture is equipped with a compression spring assembly, and the bearing circumferential positioning fixture can move vertically under pressure through its own compression spring assembly.

[0011] Furthermore, the bearing circumferential positioning fixture includes a positioning cylinder that is coaxially slidably sleeved on the bearing axial support. The upper end of the positioning cylinder is provided with a circumferential positioning ring for the bearing. The upper structure of the circumferential positioning ring for the bearing matches the structure of the bearing in the rear cover housing. The inner diameter of the circumferential positioning ring for the bearing matches the outer diameter of the positioning cylinder. The lower part of the positioning cylinder is fixedly fitted with an annular limiting plate, and the compression spring assembly includes multiple compression springs that are evenly distributed circumferentially between the limiting plate and the bearing circumferential positioning ring.

[0012] Compared with the prior art, the present invention has the following technical effects: The transmission rear cover housing pressing device of the present invention is equipped with a press. The press cylinder can use different pressing heads to arrange different pressing heads on the same movable component according to different pressing objects. The pressing head is moved to the required pressing position by moving the component. Since the rear cover housing needs to press parts into different positions, a movable rear cover housing positioning component is designed. The rear cover housing is moved to the required pressing position by a slide rail. After the pressing head and the rear cover to be pressed have reached the pressing position, pressure is applied by the electronic pressing cylinder to realize the pressing.

[0013] This setup allows multiple pressing processes to be performed simultaneously on the same press. The pressing processes can be carried out in sequence: disassembling the bearing and support assembly, pressing the bearing, inserting the support assembly into the rear cover housing, and pressing the positioning pin of the rear cover housing. This setup increases the integration of the equipment, simplifies the operation process, and improves the overall work efficiency, making it suitable for large-scale industrial use and promotion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the transmission rear cover housing and bearing structure in the prior art; Figure 2 This is a schematic diagram of the overall structure of the transmission rear cover housing press-fitting device of the present invention; Figure 3 This is a schematic diagram showing the connection relationship between the mounting bracket, bearing pressure head, and bearing support pressure head in this invention; Figure 4 This is a schematic diagram of the overall structure of the housing positioning assembly in this invention; Figure 5 This is a schematic diagram of the overall structure of the transition tray in this invention; Figure 6 This is a schematic diagram of the overall structure of the shell positioning tray in this invention; Figure 7 This is a schematic diagram showing the connection relationship between the bearing positioning fixture and the bearing support fixture in this invention; Figure 8 This is a schematic diagram of the positioning pin press-fit assembly structure in this invention.

[0015] The meanings of the labels in the diagram are as follows: 1. Mounting bracket; 2. Press, 201, Press cylinder; 3. Positioning pin press 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 fixture; 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 support block; 17. Bearing axial support component; 18. Positioning cylinder; 19. Bearing circumferential positioning ring; 20. Limiting plate; 21. Compression spring. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, all components in this invention are known in the prior art. For example, the press is a commonly used press.

[0017] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0018] The rear cover housing 6 of a certain AMT transmission in the prior art Figure 1 As shown, a through hole is provided in the middle, which serves as a bearing hole. A bearing and bearing housing need to be installed inside. Before installation, the bearing and bearing housing must be assembled together. In addition, the rear cover housing 6 also has a locating pin mounting hole for installing a locating pin.

[0019] like Figures 2 to 6 As shown, a gearbox rear cover housing press-fitting device is characterized by comprising a mounting frame 1, a press 2 provided at the upper end of the mounting frame 1, a positioning pin press-fitting assembly 3 provided on one side of the upper part of the mounting frame 1; and bearing press heads 4 and bearing support press heads 5 arranged side by side on the upper part of the mounting frame 1. The bearing pressure head 4 and the bearing support pressure head 5 can slide laterally together on the mounting frame 1, and can be connected to the pressure cylinder 201 of the press 2 respectively through their own sliding. The lower part of the mounting bracket 1 is provided with a housing positioning component, and the upper end face of the housing positioning component can be clamped onto the rear cover housing 6; the housing positioning component 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. The transition tray 9 is provided with a bearing circumferential positioning fixture 10, the position of which corresponds to the position of the bearing hole in the rear cover housing 6. The transition tray 9 is provided with a housing positioning tray 11, which has a through hole. The bearing circumferential positioning fixture 10 extends above the through hole. The housing positioning tray 11 is provided with a housing support column 12 and a positioning pin base 13. The housing support column 12 matches the shape of the rear cover housing 6.

[0020] It should be noted that the position of the locating pin base 13 corresponds to the position of the locating pin mounting hole of the rear cover housing 6.

[0021] The housing positioning tray 11 can make the bearing hole of the rear cover housing 6 correspond to the position of the pressure head by moving on the slide rail. This is an adaptive adjustment that can be achieved by those skilled in the art, and will not be described in detail here.

[0022] As a preferred embodiment, the upper part of the mounting bracket 1 is provided with a laterally extending pressure head slide rail 14, and the bearing pressure head 4 and the bearing support pressure head 5 can slide laterally along the pressure head slide rail 14 respectively.

[0023] As a preferred embodiment, the positioning pin press assembly 3 includes a positioning pin press cylinder 15; The lower part of the positioning pin cylinder 15 is connected to the pressing support block 16. The lower part of the pressing support block 16 is a support part. The positioning pin head 1501 of the positioning pin cylinder 15 passes through the upper part of the pressing support block 16 and corresponds to the support part in space.

[0024] The following provides a further explanation of the connection relationships between the components in this embodiment: The bearing pressure head 4 and the bearing support pressure head 5 are centrally mounted on the pressure head slide rail 14 of the mounting plate 1.

[0025] The bearing pressure head 4 and bearing support pressure head 5 move and change their left and right positions through the pressure head slide rail 14, and the parts are pressed into place through the upper pressure cylinder 201. The positioning pin is pressed into place through the positioning pin pressure cylinder 15 in the side positioning pin pressing assembly.

[0026] The housing positioning assembly consists of three main parts. The first part is the longitudinal slide rail 7 and the transverse slide rail 8, which mainly realize the forward and backward and left and right movements of the housing positioning assembly in order to achieve the pressing position.

[0027] 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 used for pressing the positioning pin is also installed on the housing positioning tray 11.

[0028] The third part is the transition tray 9, whose main function is to install the bearing positioning seat, install the tray limit bolts, realize the set pressing depth, and realize the movement of the rear cover housing 6.

[0029] The bearing positioning seat installed on the transition tray 9 consists of two parts: the bearing circumferential positioning fixture 10 and the bearing axial support 17. The bearing circumferential positioning fixture 10 is fitted outside the bearing axial support 17, and is equipped with a spring device that allows it to move up and down under pressure. The bearing circumferential positioning fixture 10 is mainly used for circumferential positioning of the bearing. During bearing assembly pressing, it retracts under upward pressure to allow the rear cover housing to move downwards and be pressed into place with the bearing. The bearing axial support 17 only serves to provide axial support for the bearing.

[0030] The positioning pin pressing mechanism is a C-type pressing structure. The positioning pin is pressed into place by the action of the bottom pressing support block and the positioning pin pressing cylinder 15.

[0031] The working process of this embodiment will be further described below: The first step is to load the parts: the operator places the bearing in the bearing circumferential positioning fixture 10 and the bearing axial support 17. The bearing circumferential positioning fixture 10 provides circumferential positioning for the bearing, and the bearing axial support 17 provides axial support and positioning for the bearing. Place the bearing support in the bearing support pressure head 5, place the positioning pin in the positioning pin base 13, place the rear cover housing 6 on the housing positioning tray 11 to position the rear cover housing, and use the housing support column 12 to support the rear cover housing. The second step is to press the bearing support and bearing assembly: The operator starts the press and enters the pressing process. The press head slide rail 14 drives the transition tray 9 to the preset pressing position. At the same time, the bearing support press head 5 moves to the actual pressing position, so that the bearing support press head 5 is aligned with the bearing circumferential positioning fixture 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.

[0032] Press the bearing and support into the rear cover housing 6: Keep the housing positioning tray 11 in its original position and align the bearing pressing head 4 with the hole in the rear cover housing 6. At this time, the bearing and support remain in the same position. The bearing pressing head 4 moves downward until it contacts the rear cover housing. The pressing head continues to move downward, causing the bearing positioning fixture to move downward. The compression spring is compressed, and the rear cover housing and the housing positioning tray 11 move downward together until the housing positioning tray 11 is pressed in.

[0033] The second step is to press in the positioning pin: the housing positioning assembly moves to the positioning pin pressing position three under the movement of the pressing head slide rail 14, so that the positioning pin is aligned. The positioning pin pressing assembly moves upward, so that the pressing support block 16 contacts the positioning pin positioning fixture and plays a supporting role. At this time, the positioning pin pressing head 1501 moves downward under the action of the positioning pin pressing cylinder 15 until it contacts the positioning pin. The pressing head continues to move downward, and the positioning pin pressing is completed.

[0034] This cap pressing method has been verified in batches on site and can effectively improve the efficiency of the assembly line and enhance the automation level of parts assembly.

[0035] As a preferred embodiment, it also includes a bearing axial support 17 disposed on the transition tray 9; The bearing circumferential positioning fixture 10 is coaxially slidably sleeved on the bearing axial support 17. The bearing circumferential positioning fixture 10 is provided with a compression spring assembly, and the bearing circumferential positioning fixture 10 can move vertically under pressure through its own compression spring assembly.

[0036] A further preferred embodiment of the bearing circumferential positioning fixture 10 includes a positioning cylinder 18 that is 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 bearing structure of the rear cover housing 6. The inner diameter of the bearing circumferential positioning ring 19 matches the outer diameter of the positioning cylinder 18. The lower part of the positioning cylinder 18 is fixedly fitted with an annular limiting plate 20, and the compression spring assembly includes multiple compression springs 21 that are evenly distributed circumferentially between the limiting plate 20 and the bearing circumferential positioning ring 19.

[0037] This design allows for vertical movement under pressure. The bearing circumferential positioning ring 19 is primarily used for circumferential positioning of the bearing. During bearing assembly press-fitting, it retracts under upward pressure to allow the rear cover housing to move downwards and be press-fitted into the bearing. The bearing axial support 17 only provides axial support for the bearing.

Claims

1. A transmission rear cover housing press fitting device characterized by, The device includes a mounting frame (1), a press (2) is provided on the upper end of the mounting frame (1), and a positioning pin pressing 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 side by side on the upper part of the mounting frame (1). The bearing pressure head (4) and bearing support pressure head (5) can slide laterally together on the mounting frame (1), and can be connected to the bottom (201) of the press cylinder of the press (2) through their own sliding. The mounting bracket (1) is provided with a housing positioning component at the lower part, which can hold the rear cover housing (6). The housing positioning assembly includes a longitudinal slide rail (7), on which a transverse slide rail (8) is slidably provided; and on which a transition tray (9) is slidably provided. The transition tray (9) is provided with a bearing circumferential positioning fixture (10); the transition tray (9) is provided with a housing positioning tray (11), the housing positioning tray (11) is provided with a through hole, and the bearing circumferential positioning fixture (10) extends from the bottom to the top through hole; the housing positioning tray (11) is provided with at least one housing support column (12) and a positioning pin base (13); the shape of the housing support column (12) matches the support hole of the rear cover housing (6); The positioning pin press assembly (3) includes a positioning pin press cylinder (15); The lower part of the positioning pin 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 head (1501) of the positioning pin cylinder (15) slides through the upper part of the press-fit support block (16) and corresponds to the support part vertically. It also includes a bearing axial support (17) disposed on the transition tray (9); The bearing circumferential positioning fixture (10) is coaxially slidably sleeved on the bearing axial support (17). The bearing circumferential positioning fixture (10) is provided with a compression spring assembly. The bearing circumferential positioning fixture (10) can move vertically under pressure through its own compression spring assembly. The bearing circumferential positioning fixture (10) includes a positioning cylinder (18) that is coaxially slidably sleeved on the bearing axial support (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 in the rear cover housing (6). The inner diameter of the bearing circumferential positioning ring (19) matches the outer diameter of the positioning cylinder (18). The lower part of the positioning cylinder (18) is fixedly fitted with an annular limiting plate (20), and the compression spring assembly includes multiple compression springs (21) evenly distributed circumferentially between the limiting plate (20) and the bearing circumferential positioning ring (19).

2. The transmission rear cover housing press fitting device of claim 1, wherein, The mounting bracket (1) is provided with a laterally extending pressure head slide rail (14) on its upper part, and the bearing pressure head (4) and bearing support pressure head (5) can slide laterally along the pressure head slide rail (14) respectively.

Images