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Rear suspension lower body detecting tool and detecting method thereof

A technology of rear suspension and lower body, applied in the direction of measuring device, using mechanical device, mechanical measuring device, etc., can solve the problems of low detection efficiency, inaccurate detection and high cost

Inactive Publication Date: 2020-02-21
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the distance between the bracket 3 and the vulcanized outer tube 4 relative to the center line is mostly measured directly by a measuring tool such as a vernier caliper to determine whether the symmetry meets the requirements. This method has low detection efficiency and cannot meet the requirements of batch detection; as for the welding nut hole The coaxiality of the axis and the axis of the mounting hole 2 is detected by a simple direct pin, which is inaccurate and cannot simulate the assembly of the actual vehicle; the spatial position of the weld nut 1 is measured by three coordinates, which is low in efficiency and high in cost

Method used

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  • Rear suspension lower body detecting tool and detecting method thereof
  • Rear suspension lower body detecting tool and detecting method thereof
  • Rear suspension lower body detecting tool and detecting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Refer to Figure 5 , Image 6 , The second fixing block 43 is provided with a detection pin 44 on the outside, the pin body 441 of the detection pin 44 is placed in the through hole a on the second fixing block 43 to pass through, and the outer end surface of the second fixing block 43 is connected to the ball handle 442 A reset spring 45 is sleeved on the pin body 441 in between. The reset spring 45 provides elastic force to drive the detection pin 44 to move away from the first fixed block 42. The other end of the pin body 441 is provided with a detection head 443 to detect The head 443 is cylindrical and its outer diameter matches the diameter of the welding nut hole and the mounting hole 2. During detection, force the detection pin 44 to move in the through hole a against the elastic force of the return spring 45, so that the detection head 443 is inserted into the welding nut hole and the mounting hole 2. If the detection head 443 can be inserted smoothly, the weldin...

Embodiment 2

[0025] Such as Figure 7 As shown, the detection assembly 40 also includes an optical axis pin 47, including a handle section 471, a large-diameter shaft section 472, and a small-diameter shaft section 473 that are sequentially connected. The shaft diameter of the large-diameter shaft section 472 is equal to the maximum physical inner diameter of the mounting hole 2 and The difference in coaxiality, the shaft diameter of the small-diameter shaft section 473 is equal to the diameter of the weld nut hole. The optical axis pin 47 has a simple structure and is convenient for processing. It is suitable for batch inspection, but it cannot simulate the actual state of the vehicle, and the accuracy is slightly lower.

Embodiment 3

[0027] The detection assembly 40 also includes a threaded shaft pin, including a handle, an optical shaft section and a threaded shaft section connected in sequence. The shaft diameter of the optical shaft section is equal to the difference between the maximum physical inner diameter of the mounting hole 2 and its coaxiality. The threaded shaft section is externally threaded. The nominal diameter of is equal to the nominal diameter of the weld nut hole. The threaded shaft section is matched with the welding nut hole thread to simulate the actual vehicle assembly state, and the detection accuracy is high. However, the threaded shaft section needs time to be screwed into the welding nut hole, and the detection efficiency is slightly lower, which is more suitable for random inspection.

[0028] Further, such as Figure 8 As shown, the base 10 is also provided with a neutral detection block 50 for detecting the neutrality of the bracket 3 and the outer tube 4, and the neutral detectio...

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Abstract

An objective of the invention is to provide a rear suspension lower body detecting tool which is convenient in operation, high in detection precision and low in cost, and another objective of the invention is to provide a detecting method of the rear suspension lower body detecting tool. By positioning a rear suspension lower body to a hole core, located in a plumb direction, of a connection holethereon first, and then detecting positions of two connection arms of a bracket and a distance therebetween, a position of a welded nut, and a coaxiality between an axial line of a welded nut hole andan axis of a mounting hole, the detecting tool is simple in structure, convenient in operation, complete in function and low in cost.

Description

Technical field [0001] The invention relates to the technical field of automobile parts detection, in particular to a back-suspended lower body inspection tool and a detection method thereof. Background technique [0002] The automotive powertrain suspension system is an elastic connection between the powertrain and the body, which mainly supports the weight of the powertrain, limits the displacement of the powertrain under various working conditions, and attenuates the transmission of the powertrain excitation to the body Vibration and other effects. In most cases, the vehicle powertrain suspension system includes three suspension parts, left, right and rear. The installation angle, installation position and rigidity of each suspension part on the body directly affect the NVH performance of the whole vehicle. The rear suspension consists of a rear suspension upper body and a rear suspension lower body. The structure of the rear suspension lower body is as follows Figure 1 ~ Fig...

Claims

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Application Information

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IPC IPC(8): G01B5/00G01B5/14G01B5/252
CPCG01B5/00G01B5/0002G01B5/0004G01B5/14G01B5/252
Inventor 牛磊胡阳毕书浩唐小东李金梅
Owner CHERY AUTOMOBILE CO LTD