A Measuring Method for Axial Eccentricity of Regular Hexagonal Section

Abstract

The invention provides a method for measuring the eccentricity of a regular hexagonal cross section shaft. The eccentricity of the regular hexagonal cross section shaft can be accurately and conveniently measured by using a flat-folding tappet type detection mechanism. One end of the flat-folding tappet type detection mechanism abuts against the hexagonal shaft and is located below the to-be-detected section of the hexagonal shaft, and m a displacement sensor is placed below the other end of the detection mechanism; the hexagonal shaft is rotated, the detection mechanism swings around the rotation center along with the hexagonal shaft, and the displacement sensor records the swing displacement value of the detection mechanism in real time; and a function relational expression between the predicted eccentricity and deflection angle and known parameters and displacement sensor indication values is deduced according to the geometrical relationship of each part and mathematical transformation. The measuring method is simple and convenient, the measuring precision is high, and an effective solution is provided for engineering problems such as hexagonal shaft straightness measurement andhexagonal shaft straightening.

Description

technical field [0001] The invention relates to a method for measuring shaft eccentricity, in particular to a method for measuring shaft eccentricity of a regular hexagonal section. Background technique [0002] The transmission shaft is a key part of mechanical equipment transmission, and the straightness of its axis directly affects the performance of the equipment. If the transmission shaft is bent and deformed, that is, when the axis straightness error is large, the equipment will have vibration, wear, noise and other faults, and the service life will be shortened. It will also be greatly reduced, so the equipment has higher requirements on the straightness of the axis of the drive shaft. The regular hexagonal cross-section shaft, also known as the hexagonal shaft, has the advantages of good mechanical properties, convenient processing, and high material utilization rate. It is widely used as the transmission shaft of various equipment. The straightness of the axis also ...

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Problems solved by technology

However, the axial section of the regular hexagonal section is a hexagon, and the distance from each point on the side to the centroid is not a fixed value, and its value is between the radius of the inscribed circle and the radius of the circumscribed circle of the hexagon, so it cannot be observed by rotation The traditional measurement method of sub-meter beating is used to find the eccentricity of each place. An efficient and professional measurement method is needed to measure the axial eccentricity of the regular hexagonal section to meet the needs of practical production.

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