Combined Long Distance Shaft Sleeve Coaxiality Detector

Abstract

The invention provides a coaxiality detector for a combined long-spaced shaft sleeve. The coaxiality detector comprises sliding end shafts, a reference rod and detection sliding sleeves, wherein two sliding end shafts are provided; the sliding end shafts comprise chamfered fitting portions and sliding pin portions; the two ends of the reference rod are provided with end stepped holes; two detection sliding sleeves are provided; the detection sliding sleeves have tubular structures provided with through holes; the through holes are sliding sleeve sliding holes; the sliding sleeve sliding holes are in clearance fit with the sliding pin portions of the sliding end shafts; the difference between the inner diameter of the shaft sleeve and the outer diameter of each detection sliding sleeve is smaller than a preset coaxiality standard value of the shaft sleeve. In the detector, the sliding end shafts and the reference rod are combined into a public axis, and inspection on whether the coaxiality between shaft sleeves at the two ends of a rear axle and the public axis meets a design standard or not is performed by detecting whether the sliding sleeves can be inserted into the gaps between the sliding pin portions of the sliding end shafts and the shaft sleeves. The coaxiality detector is skillful in design, and is rapid and convenient to operate and use.

Description

technical field [0001] The invention relates to an instrument for detecting whether the coaxiality of long-distance shaft sleeves is qualified or not, in particular to a combined long-distance shaft sleeve coaxiality detector. Background technique [0002] In the field of automobile manufacturing and assembly, such as figure 1 As shown in the schematic diagram of the rear axle structure, the structure of the rear axle 1 is complex, and the bushings 11 at both ends are connected to the vehicle body. Concentricity is tested with respect to its common axis. However, due to the relatively large dimensional tolerance of the two shaft sleeves relative to the center of the coil spring (greater than the coaxiality requirement), ordinary coaxiality special inspection tools cannot detect it. At present, three-coordinate testing equipment is generally used to detect the coaxiality. The detection principle of the coordinate detection equipment is: connect the center points of the oute...

AI Technical Summary

Problems solved by technology

However, due to the relatively large dimensional tolerance of the two shaft sleeves relative to the center of the coil spring (greater than the coaxiality requirement), ordinary coaxiality special inspection tools cannot detect it. At present, three-coordinate testing equipment is generally used to detect the coaxiality. The detection principle of the coordinate detection equipment is as follows: connect the center points of the outermost rings of the two bushings 11 to construct a common axis, and then obtain the coaxiality between the axes of each bushing 11 and the common axis to judge whether it meets the requirements

It has the following disadvantages: the three-coordinate detection equipment is a high-precision detection equipment, which is used to detect workpieces with low coaxiality accuracy requirements, which wastes resources and makes the detection cost high; the rear axle 1 is large in size and heavy It is easy to cause damage to the rear axle 1 and the three-coordinate detection equipment

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