Electric drive axle tube press fitting device

Abstract

The utility model provides a kind of electric drive axle tube press fitting device, belong to the technical field of automobile parts processing and manufacturing, it includes upper pressing positioning device, lower positioning device and guiding reset device;The upper pressing positioning device includes upper connecting plate, and upper connecting plate top is provided with upper pressing plate, and upper connecting plate lower is provided with the upper positioning disc with upper positioning pin;Multiple magnets are provided on the upper positioning disc;The lower positioning device includes lower connecting plate, and lower positioning disc is provided on lower connecting plate;The guiding reset device includes guide column, and upper limit plate, guide sleeve, spring pressing block, reset spring, spring limit block, lower positioning seat are respectively provided on guide column;It further includes support seat, and support seat lower is matched with lower connecting plate, and upper is provided with limit block.This device is a kind of more flexible device, can realize the press fitting of different specifications left and right shaft tube assembly, satisfies sample piece submission cycle while ensuring product quality.

Description

Technical Field

[0001] This utility model relates to an electric drive axle tube pressing device, belonging to the field of automotive parts processing and manufacturing technology. Background Technology

[0002] With the rapid development of electric vehicles, the structure of rear drive axles has also diversified, mainly including hub motor type, parallel shaft type, and coaxial direct-drive type. Among them, the coaxial direct-drive axle has the advantages of small space occupation, high transmission efficiency, and good NVH (noise, vibration, and harshness) performance. The structure mainly consists of three parts: central drive system, left axle tube assembly, and right axle tube assembly. The left and right axle tube assemblies mostly adopt a tube and forging press-welded structure. The flange, intermediate axle tube, and end cap have certain dimensional accuracy requirements such as angle and coaxiality. Currently, most of the industry uses special equipment to complete the press-fitting, but the equipment cycle is long and cannot fully meet the customer's requirements for sample delivery cycle. Utility Model Content

[0003] The purpose of this utility model is to provide an electric drive axle tube pressing device. As a highly flexible device, it has a short design and processing cycle and low manufacturing cost. It can press-fit left and right axle tube assemblies of different specifications by changing parts such as upper positioning plate, lower positioning plate, and limit block. The device has a built-in limit function and can use ordinary standard presses or equipment with pressing function to achieve rapid sample trial production, meet the sample submission cycle, and ensure product quality.

[0004] The technical solution adopted by this utility model is: an electric drive axle tube pressing device, characterized in that: it includes an upper pressing and positioning device, a lower positioning device and a guide and reset device;

[0005] The upper pressing and positioning device includes an upper connecting plate, an upper pressure plate is provided above the upper connecting plate, and an upper positioning plate with an upper positioning pin is provided below the upper connecting plate; multiple magnets are provided on the upper positioning plate.

[0006] The lower positioning device includes a lower connecting plate, and a lower positioning disk is provided on the lower connecting plate;

[0007] The guide reset device includes a guide post, on which an upper limit plate, a guide sleeve, a spring pressure block, a reset spring, a spring limit block, and a lower positioning seat are respectively provided;

[0008] It also includes a support base, which mates with the lower connecting plate below and has a limit block above.

[0009] Furthermore: the upper limit plate is fixed to the top of the guide post with bolts; the guide sleeve, spring pressure block, and reset spring are respectively sleeved on the outside of the guide post; the spring limit block is sleeved on the outside of the guide post and fixed with bolts; the lower positioning seat is integrally connected to or fixedly connected to the guide post.

[0010] Furthermore: the upper end of the guide post slides into the guide hole on the upper connecting plate; the lower end of the guide post is interference-fitted with the fixing hole on the lower connecting plate and is bolted to the lower connecting plate via the lower positioning seat.

[0011] Furthermore, it also includes a spring guard, which is fitted over the outside of the return spring and connected at its upper end to the spring pressure block.

[0012] The beneficial effects of this utility model are as follows: Because this utility model uses an upper clamping positioning device to achieve vertical guiding movement through a guiding and resetting device, the upper clamping positioning device has an upper positioning plate and an upper positioning pin for positioning the flange at its middle position. The upper positioning plate has numerous mounting holes for embedding magnets to attract the flange. The upper and lower ends of the guiding and resetting device are simultaneously connected to the upper clamping positioning device and the lower positioning device. The lower positioning device has a lower positioning plate and a lower positioning pin for positioning the end cover at its middle position. The guiding and resetting device is equipped with a reset spring, a spring pressure block, and a spring limit block for resetting. Therefore, its structure is simple, its design is reasonable, and its positioning is accurate. Under the action of the magnet, the flange is strongly attracted to the upper positioning plate. When the upper clamping positioning device moves under external force, it ensures that it and the lower positioning device are always in a controllable coaxial position, thereby guaranteeing product quality. The upper and lower positioning plates take into account the positioning of the left and right flanges and end caps. By changing the position of the positioning pins, the production of left and right parts can be compatible. At the same time, by changing the upper positioning plate, lower positioning plate and limit block, the production of different models of products can be quickly switched. Its operation is convenient and fast, reducing processing and manufacturing costs, and can meet the needs of rapid production and delivery of different models of products in a short period of time. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a structural schematic diagram of a shaft-type tube assembly according to this utility model;

[0015] Figure 2 yes Figure 1 Schematic diagram of the intermediate pressure assembly device;

[0016] Figure 3 yes Figure 2 Schematic diagram of the upper and middle clamping positioning device;

[0017] Figure 4 yes Figure 2 Schematic diagram of the center guide reset device;

[0018] Figure 5 yes Figure 2 A schematic diagram of the lower positioning device.

[0019] The numbers in the diagram are explained as follows: 1. Shaft tube assembly, 2. Press fitting device, 3. Upper pressure plate, 4. Upper pressing and positioning device, 5. Guide reset device, 6. Limit block, 7. Support seat, 8. Spring protective cover, 9. Lower positioning device, 10. Upper connecting plate, 11. Upper positioning pin, 12. Upper positioning plate, 13. Upper limit plate, 14. Guide sleeve, 15. Guide post, 16. Spring pressure block, 17. Reset spring, 18. Spring limit block, 19. Lower positioning seat, 20. Lower connecting plate, 21. Lower positioning plate, 22. Positioning pin. Detailed Implementation

[0020] Reference Appendix Figure 1-5 This utility model provides an electric drive axle tube pressing device 2, which is used to press the axle tube assembly 1. It includes an upper pressing and positioning device 4, a lower positioning device 9, and a guide and reset device 5; the upper pressing and positioning device 4 includes an upper connecting plate 10, an upper pressure plate 3 is arranged above the upper connecting plate 10, and an upper positioning plate 12 with an upper positioning pin 11 is arranged below the upper connecting plate 10; multiple magnets are embedded and bonded on the upper positioning plate 12, and the magnets cooperate with the upper flange; the lower positioning device 9 includes a lower connecting plate 20, and a lower positioning plate 21 is arranged on the lower connecting plate 20; the guide and reset device 5 includes a guide post 15, and an upper limit plate 13, a guide sleeve 14, a spring pressure block 16, a reset spring 17, a spring limit block 18, and a lower positioning seat 19 are respectively arranged on the guide post 15; it also includes a support seat 7, which cooperates with the lower connecting plate 20 below and has a limit block 6 above.

[0021] Preferably: the upper limit plate 13 is fixed to the top of the guide post 15 by bolts; the guide sleeve 14, the spring pressure block 16, and the reset spring 17 are respectively sleeved on the outside of the guide post 15; the spring limit block 18 is sleeved on the outside of the guide post 15 and fixed by bolts; the lower positioning seat 19 is integrally connected to or fixedly connected to the guide post 15.

[0022] Preferably, the upper end of the guide post 15 is slidably fitted with the guide hole on the upper connecting plate 10; the lower end of the guide post 15 is interference-fitted with the fixing hole on the lower connecting plate 20 and is bolted to the lower connecting plate 20 through the lower positioning seat 19.

[0023] Preferably, it also includes a spring guard 8, which is sleeved on the outside of the return spring 17 and its upper end is connected to the spring pressure block 16.

[0024] The following section provides a further explanation of this solution in conjunction with the operational process.

[0025] An electric drive axle tube pressing device includes an upper pressing and positioning device 4, a guide and reset device 5, a limiting block 6, a support base 7, and a lower positioning device 9. The upper pressing and positioning device 4 has a three-layer structure, with an upper connecting plate 10 as the middle layer. An upper pressure plate for the pressure application point of a press is screwed to the upper end of the upper connecting plate at its middle position, and an upper positioning plate and a positioning pin for positioning a flange are screwed to the lower end. The upper positioning plate has numerous mounting holes for embedding magnets to attract the flange. The flange is precisely positioned by the positioning pins and the positioning plate. Compatible positioning of the left and right flanges is achieved by changing the position of the upper positioning pins on the upper positioning plate, and the flange is attracted to the positioning plate by the magnets. Guide holes for the guide and reset device to slide in conjunction with the upper connecting plate are provided at both ends.

[0026] The guide reset devices are symmetrically arranged on both sides of the device. The main body is a central guide post. The upper end of the guide post is provided with an upper limit plate for limiting the position, and the lower end is provided with a lower positioning seat for connecting and fixing the lower positioning device. The lower positioning seat and the lower connecting plate are connected by interference fit and screw connection to ensure perpendicularity. A reset spring for resetting the upper pressing positioning device is installed in the middle of the guide post. When the press head of the press machine resets, the upper pressing positioning device resets under the action of the reset spring, which facilitates the picking and placing of products. A dustproof and impact-proof spring protective cover is provided on the outside of the reset spring. A spring pressure block and a spring limit block are respectively provided at the upper and lower ends of the reset spring. A sliding guide sleeve is installed on the upper end of the spring pressure block. The guide sleeve is embedded in the guide hole of the upper connecting plate and moves with the guide post to ensure mutual sliding accuracy and durability.

[0027] Below the lower positioning device is a lower connecting plate for use with the press support. A lower positioning disc for positioning the end cap is screwed to the middle of the lower connecting plate. The lower positioning disc and the lower connecting plate are connected by an interference fit. A positioning pin 22 restricting the angular movement of the end cap is provided on the outer side of the lower positioning disc. The lower positioning disc is compatible with both left and right end cap positioning; the positioning of the left and right end caps can be achieved by changing the position of the lower positioning pin.

[0028] The bottom surface of the support base is connected to the lower connecting plate by bolts. A limiting block for adjusting the downward movement of the upper pressing and positioning device is screwed onto the upper end surface of the support base. A shim is provided between the limiting block and the support base, and fine adjustments can be made by adding or removing shims (not shown in the figure). When pressing products of different heights, only the limiting block of the corresponding thickness needs to be replaced.

[0029] The specific operation process of this utility model structure is as follows:

[0030] With the pressing device in the reset state, check the specifications and positions of the upper and lower positioning plates and pins. Replace the adjusting limit block to ensure it matches the model of the electric drive axle tube. Then, place the flange into the upper positioning plate for positioning, and the end cover into the lower positioning plate for positioning. Check the positioning and fit of the flange and end cover. Place the tube into the hole at the upper end of the end cover and straighten it. Press the press start button. The press head acts on the upper pressure plate, causing the upper pressing and positioning device to descend along the guide reset device. Ensure the tube is straight. Use the chamfered ends of the tube, end cover, and flange to press them in simultaneously until the upper connecting plate contacts the limit block and cannot descend further. Maintain the pressure and check the fit of each surface. Release the press button to reset the press head and the upper pressing and positioning device, completing the pressing of the electric drive axle tube.

Claims

1. A press-fitting device for an electric drive axle tube, characterized in that: It includes an upper clamping and positioning device (4), a lower positioning device (9), and a guide and reset device (5); The upper pressing and positioning device (4) includes an upper connecting plate (10), an upper pressure plate (3) is provided above the upper connecting plate (10), and an upper positioning plate (12) with an upper positioning pin (11) is provided below the upper connecting plate (10); multiple magnets are provided on the upper positioning plate (12); The lower positioning device (9) includes a lower connecting plate (20), on which a lower positioning disk (21) is provided. The guide reset device (5) includes a guide post (15), and an upper limit plate (13), a guide sleeve (14), a spring pressure block (16), a reset spring (17), a spring limit block (18), and a lower positioning seat (19) are respectively provided on the guide post (15). It also includes a support base (7), which is fitted with a lower connecting plate (20) below and a limit block (6) is provided above.

2. The electric drive axle tube pressing device according to claim 1, characterized in that: The upper limit plate (13) is fixed to the top of the guide post (15) by bolts; the guide sleeve (14), spring pressure block (16), and reset spring (17) are respectively sleeved on the outside of the guide post (15); the spring limit block (18) is sleeved on the outside of the guide post (15) and fixed by bolts; the lower positioning seat (19) is integrally connected or fixedly connected to the guide post (15).

3. The electric drive axle tube pressing device according to claim 1, characterized in that: The upper end of the guide post (15) is slidably fitted with the guide hole on the upper connecting plate (10); the lower end of the guide post (15) is interference fitted with the fixing hole on the lower connecting plate (20) and is bolted to the lower connecting plate (20) through the lower positioning seat (19).

4. The electric drive axle tube pressing device according to claim 1, characterized in that: It also includes a spring guard (8), which is fitted outside the return spring (17) and its upper end is connected to the spring pressure block (16).

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