Movable electric drive axle tube press-fitting positioning structure

Abstract

The utility model relates to a movable electric drive axle tube press-fitting positioning structure which comprises a height adjusting structure and a movable guiding positioning structure, and the height adjusting structure comprises a lower fixing block, a height adjusting rod and a height limiting block. The movable guide positioning structure comprises a guide fixing block, a guide rod and a positioning block; the lower fixing block is fixed to a lower die plate of the electric drive bridge pipe press-fitting die, and the height adjusting rod is fixed in a cavity of the lower fixing block in an interference mode in a shoulder mode. The height limiting block and the guide fixing block are sleeved above the height adjusting rod in a hole-shaft matching manner, are limited by a circular bead above the height adjusting rod, and are fastened through a bolt; the head portion of the guide rod is in interference fit with the positioning block in a shoulder fixing mode, and the movable rod portion of the guide rod is in clearance fit with the guide fixing block. In the novel structure, the positioning structures are adjustable, the adaptability is high, press fitting of workpieces of various sizes can be met, and the die cost can be effectively saved.

Description

Technical Field

[0001] The utility model relates to the field of mold equipment, in particular to a movable electric drive bridge tube press-fit positioning structure. Background Art

[0002] With the continuous innovation and development of new energy vehicles, the structural form and technology of electric drive axles are also constantly breaking through. As a key component of the new generation of automotive power systems, the layout and design of electric drive axles are crucial to the reliability of the entire vehicle. As one of them, the coaxial electric drive axle has the advantages of compact structure, small size, high transmission efficiency and low cost, and is widely used in various pure electric vehicles. Its structural form is mainly that the sleeve assembly is pressed into the flange and welded into an assembly, and the flange end is fastened to the reducer with the motor assembly. The motor support is welded on the sleeve assembly, and the drive motor is fixed to the motor support through a bracket. Due to the deviation in the angle or position between the motor support and the flange, it will cause assembly interference and affect the NVH performance of the entire vehicle. Therefore, in terms of technology and assembly requirements, the angle between the motor support and the flange is required to be high. However, in the traditional vertical press-fitting process, the positioning of tall and long workpieces is a major difficulty, either the tooling is tall, or the structure is relatively complex and inconvenient to operate. This patent is based on the shortcomings of existing equipment and technology, and designs a movable electric drive axle tube press-fit positioning structure. Utility Model Content

[0003] The purpose of the utility model is to solve the defects of the prior art and provide a movable electric drive bridge tube press-fit positioning structure.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A movable electric drive bridge tube press-fit positioning structure, comprising a height adjustment structure and a movable guide positioning structure, wherein the height adjustment structure comprises a lower fixed block, a height adjustment rod, and a height limit block; the movable guide positioning structure comprises a guide fixed block, a guide rod, and a positioning block;

[0006] The lower fixing block is fixed on the lower mold plate of the electric drive axle bridge tube press mold, and the height adjustment rod is fixed in the cavity of the lower fixing block by interference fit in the shoulder manner;

[0007] The height limiting block and the guide fixing block are inserted into the top of the height adjusting rod by means of hole-shaft matching, and are limited by the shoulder above the height adjusting rod and fastened by bolts;

[0008] The head of the guide rod is interference-fitted on the positioning block by means of shoulder fixing, and the movable rod portion of the guide rod and the guide fixing block are clearance-fitted.

[0009] Further, the number of the height adjustment rods and the guide rods is two.

[0010] Furthermore, the bridge tube components to be pressed are placed into the upper and lower mold cavities respectively.

[0011] Furthermore, the guide rod is pushed in the direction of the positioning workpiece, driving the positioning block forward together, abutting against the plane of the workpiece, and at the same time rotating the angle of the workpiece, so that the plane of the workpiece is close to the positioning block to complete the positioning.

[0012] Furthermore, the lower fixing block is fixed to the lower mold plate of the electric drive axle bridge tube pressing mold by bolts and pins.

[0013] The beneficial effects of the utility model are as follows: the positioning structure and method solves the problems of high and long workpiece positioning difficulties and provides a practical, simple and fast press-fitting positioning method through the adjustable height structure and the movable guide positioning structure under the condition of the shortcomings of existing equipment and technology. In this structural method, the reasonable positioning method avoids the problem of the mold structure being too tall. In addition, in this new structure, the positioning structure can be adjusted and has strong adaptability, which can meet the press-fitting of workpieces of various sizes and can effectively save mold costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the structure of the utility model;

[0015] Figure 2 It is a top view of the structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of a press-fitted workpiece of the utility model.

[0017] Explanation of the accompanying drawings: lower fixed block 1, height adjustment rod 2, height limit block 3, guide fixed block 4, guide rod 5, positioning block 6, bridge pipe assembly 7. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 3 A movable electric drive bridge tube press-fit positioning structure adopts a movable guide positioning structure. The entire positioning device includes a height adjustment structure and a movable guide positioning structure.

[0019] The height adjustment structure includes a lower fixed block 1, a height adjustment rod 2, and a height limit block 3; the movable guide positioning structure includes a guide fixed block 4, a guide rod 5 and a positioning block 6;

[0020] Among them, the lower fixed block 1 is fixed to the lower template by bolts and pins; there are two height adjustment rods 2, which are interference fixed in the cavity of the lower fixed block 1 by shoulder method; the height limit block 3 and the guide fixed block 4 are inserted into the top of the height adjustment rod 2 by hole-axis matching, and are limited by the shoulder above the height adjustment rod 2 and fastened by bolts; there are two guide rods 5, whose heads are interference fit on the positioning block 6 by shoulder fixing method, and the movable rod part of the guide rod 5 and the guide fixed block 4 are clearance fit to ensure that the guide rod 5 can slide smoothly along the hole axis direction.

[0021] The method of using the positioning structure for positioning is: fix the positioning structure on the lower template of the electric drive axle bridge tube pressing die through the lower fixing block 1, determine the position according to the positional relationship, put the bridge tube components to be pressed into the upper and lower mold cavities respectively, push the guide rod 5 in the direction of the positioning workpiece, drive the positioning block 6 forward together, and abut against the workpiece plane, and at the same time rotate the workpiece angle so that the workpiece plane is close to the positioning block 6 to complete the positioning.

[0022] Next, the press-fitting operation is performed until the bridge tube assembly 7 is press-fitted into place, the guide rod 5 is retracted, and the press-fitted bridge tube assembly 7 is taken out.

[0023] In summary, the positioning structure and method solves many problems such as the difficulty in positioning tall and long workpieces through the adjustable height structure and the movable guide positioning structure under the condition of the shortcomings of existing equipment and technology, and provides a practical, simple and fast press-fitting positioning method. In this structural method, the reasonable positioning method avoids the problem of the mold structure being too tall. In addition, in this new structure, the positioning structure can be adjusted and has strong adaptability, which can meet the press-fitting of workpieces of various sizes and can effectively save mold costs.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A movable electric drive bridge tube press-fit positioning structure, comprising a height adjustment structure and a movable guide positioning structure, characterized in that: The height adjustment structure includes a lower fixed block, a height adjustment rod, and a height limit block; the movable guide positioning structure includes a guide fixed block, a guide rod, and a positioning block; Wherein, the lower fixing block is fixed on the lower mold plate of the electric drive axle bridge tube press mold, and the height adjustment rod is fixed in the mold cavity of the lower fixing block by interference fit in a shoulder manner; The height limiting block and the guide fixing block are inserted into the top of the height adjusting rod by means of hole-shaft matching, and are limited by the shoulder above the height adjusting rod and fastened by bolts; The head of the guide rod is interference-fitted on the positioning block by means of shoulder fixing, and the movable rod portion of the guide rod is clearance-fitted with the guide fixing block.

2. The movable electric drive bridge tube press-fitting positioning structure according to claim 1 is characterized in that: The number of the height adjustment rods and the guide rods is two.

3. The movable electric drive bridge tube press-fitting positioning structure according to claim 1 is characterized in that: The bridge tube parts to be pressed are placed in the upper and lower mold cavities respectively.

4. The movable electric drive bridge tube press-fitting positioning structure according to claim 1, characterized in that: The guide rod is pushed toward the direction of positioning the workpiece, driving the positioning block forward together, abutting against the plane of the workpiece, and rotating the workpiece angle at the same time, so that the workpiece plane is close to the positioning block to complete the positioning.

5. The movable electric drive bridge tube press-fitting positioning structure according to claim 1, characterized in that: The lower fixing block is fixed on the lower mold plate of the electric drive axle bridge tube pressing mold by bolts and pins.

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