Automatic control positioning device for axle shaft sleeve assembly

Abstract

The utility model relates to an axle shaft sleeve assembly automatic control positioning device which comprises a base and a positioning device body above the base, the positioning device body comprises a supporting mechanism, a positioning mechanism and a driving air cylinder, the supporting mechanism is perpendicular to the base, the bottom of the supporting mechanism is fixed above the base through a fastener, and the top of the supporting mechanism is connected with the positioning mechanism. The positioning mechanism is composed of a V-shaped positioning seat and a V-shaped positioning block fixed above the V-shaped positioning seat, and the half shaft sleeve assembly is positioned through the V-shaped positioning block; and the driving cylinder is mounted between the base and the V-shaped positioning seat. According to the utility model, automatic centering control in the press-fitting process can be realized, and the press-fitting of multiple series of axle shaft sleeve assemblies can be met. Meanwhile, the stability and the performance of the product quality are ensured.

Description

Technical Field

[0001] The utility model relates to a positioning device, in particular to an automatic control positioning device for a half-axle sleeve assembly, belonging to the technical field of automobile assembly. Background Art

[0002] During the automobile production process, the rear axle main reducer and sleeve assembly are assembled by simultaneously pressing the left and right half-axle sleeve assemblies into the rear axle housing holes in the rear axle main reducer assembly. Figure 1 As shown, its structure is simple and its function is single. Due to the wide variety of half-axle sleeve assemblies and their varying lengths, the sleeve attachments experience significant variations in deformation after welding. Over-positioning occurs during the press-fit process, resulting in a first-pass assembly yield of only 95%, necessitating rework and reassembly. This impacts product quality stability and performance, leading to low production efficiency, high development costs, and poor economic efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an automatic control positioning device for a half-axle sleeve assembly which has a reasonable structure and is easy to use.

[0004] In order to achieve the above purpose, the specific technical solution of the utility model is as follows: an automatic control positioning device for a half-axle sleeve assembly, comprising a base and a positioning device body above the base, the positioning device body comprising a supporting mechanism, a positioning mechanism and a driving cylinder, the supporting mechanism and the base are perpendicular to each other, the bottom is fixed to the top of the base by fasteners, and the top is connected to the positioning mechanism, the positioning mechanism consists of a V-shaped positioning seat and a V-shaped positioning block fixed above it, and the half-axle sleeve assembly is positioned by the V-shaped positioning block; the driving cylinder is installed between the base and the V-shaped positioning seat.

[0005] Furthermore, the support mechanism is composed of a symmetrically arranged guide shaft and a pressure spring installed on the guide shaft. The upper and lower ends of the guide shaft pass through the holes on the V-shaped positioning seat and the base respectively, and are fixed by bolts to ensure a tight connection between the V-shaped positioning seat and the base; the pressure spring is sleeved on the outside of the guide shaft sleeve, and the upper and lower ends are respectively in contact with the V-shaped positioning seat and the base to support the V-shaped positioning seat to float up and down.

[0006] Furthermore, the V-shaped positioning seat is in an I-shaped structure, and a groove for installing the V-shaped positioning block is provided on the upper side of the I-shaped structure along the center line.

[0007] Furthermore, the V-shaped positioning block consists of a positioning block body and a supporting portion thereunder. The supporting portion is inserted into the groove of the V-shaped positioning block, and there is a gap of 0.03-0.06 mm between the two for precise positioning of the V-shaped block.

[0008] Furthermore, the support portion and the V-shaped positioning seat are cooperatively provided with mounting holes, and the V-shaped positioning block is fixed in the V-shaped positioning seat by a positioning pin.

[0009] Furthermore, screw holes for installing elastic top screws are symmetrically provided on both sides above the V-shaped positioning seat, and the upper ends of the elastic top screws are in contact with the V-shaped positioning block body to achieve up and down floating support of the V-shaped positioning block.

[0010] Furthermore, the driving mechanism is a cylinder, the bottom of the cylinder is fixed to the top of the base by bolts, and the driving shaft of the cylinder is in contact with the bottom of the V-shaped positioning seat.

[0011] Compared with the prior art, the present invention offers the following benefits: Through mechatronic control, the present invention enables automatic control of the axle sleeve assembly. Z-axis deviations of the axle sleeve assembly are automatically adjusted via a pressure spring located between the base and the V-shaped seat. X-axis deviations are automatically adjusted via the left and right floating V-shaped block. This device enables automatic centering control during press-fitting, accommodating multiple series of axle sleeve assemblies. The first-pass assembly pass rate is increased to 99.5%, while ensuring product quality stability and performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of an existing positioning device.

[0013] Figure 2 It is a structural diagram of the present utility model.

[0014] Description of the accompanying drawings: 1-base; 2-guide shaft; 3-V-shaped positioning seat; 4-elastic top screw; 5-V-shaped positioning block; 6-locating pin; 7-pressure spring; 8-cylinder. DETAILED DESCRIPTION Example

[0015] This embodiment provides an automatic control positioning device for a half-axle sleeve assembly, the structure of which is as follows: Figure 2 As shown, it includes: a base 1, a guide shaft 2, a V-shaped positioning seat 3, an elastic top screw 4, a V-shaped positioning block 5, a positioning pin 6, a pressure spring 7 and a cylinder 8.

[0016] The V-shaped seat 3 is fixedly connected to the base 1 via the guide shaft 2; the cylinder 8 is installed between the base 1 and the V-shaped seat 3; the V-block 5 is fixedly connected to the groove of the V-shaped seat 3 via the locating pin 6; the elastic jackscrew 4 is installed in the screw holes on the left and right sides of the V-shaped seat 3; the pressure spring 7 is installed on the guide shaft 2; the pressure spring 7 is installed on the guide shaft 2 and is located between the base 1 and the V-shaped seat 3. It is used to support the V-shaped seat 3 to float up and down, and to make slight adjustments to the half-axle sleeve assembly when there is deviation in the Z direction; the elastic jackscrew 4 is installed in the screw holes on the left and right sides of the V-shaped seat 3. It is used to provide left and right floating support for the V-block 5. It is used to make slight adjustments to the half-axle sleeve assembly when there is deviation in the X direction; the cylinder 8 is installed between the base 1 and the V-shaped seat 3, and the cylinder 8 is fixed to the base 1 and connected to the V-shaped seat 3. When the deformation of the half-axle sleeve assembly exceeds the above-mentioned micro-adjustment range (the equipment pressure monitoring is greater than the set pressure), the equipment will pause the press-fitting, the downward movement of the cylinder 8 and the V-block 5 will be separated from the workpiece positioning surface to eliminate over-positioning, and the equipment will be started again to complete the press-fitting.

[0017] The working principle of this utility model:

[0018] Place the rear axle main reducer assembly on the positioning seat, and place the left and right half-shaft sleeve assemblies on the half-shaft sleeve positioning device. Start the equipment servo electric cylinder to press the left and right half-shaft sleeve assemblies to the final set position. The pressure sensor monitors the pressure values ​​on the left and right ends of the pressing process in real time. During the pressing process, the deviation of the half-shaft sleeve assembly in the Z direction is slightly adjusted by the pressure spring located between the base and the V-type seat. The deviation of the half-shaft sleeve assembly in the X direction is slightly adjusted by the left and right floating of the V-type block. If the deformation of the half-shaft sleeve assembly exceeds the micro-adjustment range (the equipment pressure monitoring is greater than the set pressure), the equipment pauses the pressing cylinder 8 and the downward V-type block 5 disengages from the workpiece positioning surface to eliminate over-positioning. The equipment is started again to complete the pressing.

[0019] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. An automatic control positioning device for a half-axle sleeve assembly, characterized by: It includes a base and a positioning device body above it. The positioning device body includes a supporting mechanism, a positioning mechanism and a driving cylinder. The supporting mechanism and the base are perpendicular to each other, the bottom is fixed to the top of the base by fasteners, and the top is connected to the positioning mechanism. The positioning mechanism consists of a V-shaped positioning seat and a V-shaped positioning block fixed above it. The half-axle sleeve assembly is positioned by the V-shaped positioning block; the driving cylinder is installed between the base and the V-shaped positioning seat.

2. The automatic control positioning device for the half-shaft sleeve assembly according to claim 1 is characterized in that: The support mechanism consists of a symmetrically arranged guide shaft and a pressure spring installed on the guide shaft. The upper and lower ends of the guide shaft pass through the holes on the V-shaped positioning seat and the base respectively, and are fixed by bolts to ensure a tight connection between the V-shaped positioning seat and the base; the pressure spring is sleeved on the outside of the guide shaft sleeve, and the upper and lower ends are respectively in contact with the V-shaped positioning seat and the base to support the V-shaped positioning seat to float up and down.

3. The automatic control positioning device for the half-shaft sleeve assembly according to claim 1 is characterized in that: The V-shaped positioning seat is in an I-shaped structure, and a groove for installing a V-shaped positioning block is opened along the center line above the I-shaped structure.

4. The automatic control positioning device for the half-shaft sleeve assembly according to claim 3 is characterized in that: The V-shaped positioning block consists of a positioning block body and a supporting part below it. The supporting part is inserted into the groove of the V-shaped positioning block, and there is a 0.03-0.06mm gap between the two for precise positioning of the V-shaped block.

5. The automatic control positioning device for the half-shaft sleeve assembly according to claim 4 is characterized in that: The support portion and the V-shaped positioning seat are matched with mounting holes, and the V-shaped positioning block is fixed in the V-shaped positioning seat by a positioning pin.

6. The automatic control positioning device for the half-shaft sleeve assembly according to claim 3 is characterized in that: Screw holes for installing elastic top screws are symmetrically provided on both sides above the V-shaped positioning seat. The upper end of the elastic top screw abuts against the V-shaped positioning block body to realize the up and down floating support of the V-shaped positioning block.

7. The automatic control positioning device for the half-shaft sleeve assembly according to claim 1 is characterized in that: The bottom of the driving cylinder is fixed to the top of the base by bolts, and the driving shaft of the driving cylinder abuts against the bottom of the V-shaped positioning seat.

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