Tooth profile detection die, measurement method, evaluation standard and coping method

Abstract

The invention discloses a tooth profile detection mold, a measurement method, an evaluation standard and a coping method. The tooth profile detection mold comprises a tooth crest fitting edge, a firstmeasurement reference edge and a second measurement reference edge, a tooth profile measuring method and an evaluation standard are stipulated, the standard tooth pitch is set to be P0 + / -T0, and when the interval G is smaller than or equal to T0, the tooth profile can not be ground; when the interval G is larger than T0, the tooth profile needs to be ground; when the distance P is out of tolerance slightly, the meshing surface of the detected rack attached to the lower portion of the tooth profile detection die is ground; when one tooth below is ground, the distance of the subsequent tooth surface below is small and out of tolerance, and grinding should be conducted downwards and smoothly; when the distance P is too large, the meshing surface of the detected rack attached to the upper portion of the tooth profile detection die is ground; and when the upper tooth is ground and the distance of the subsequent tooth surface at the upper part is too large and out of tolerance, the grinding is upwards and smoothly carried out. The pitch precision can be effectively improved, the problems of lifting load out-of-tolerance, sudden change and the like caused by pitch out-of-tolerance and pitch sudden change are controlled, and the transmission precision is improved.

Description

technical field [0001] The invention belongs to the technical field of jack-up offshore engineering platform manufacturing, and in particular relates to a rack tooth shape detection mold, a measuring method, an evaluation standard and a grinding method. Background technique [0002] The relative movement of the rack and pinion is a common way to support the lifting operation of the jack-up offshore platform. In the actual manufacturing process, multiple racks need to be extended and welded to the legs, and cannot be machined after welding. The tooth pitch of the rack, especially the tooth pitch at the interface, is prone to out-of-tolerance, or has a sudden change with the adjacent tooth pitch, which will cause problems such as uneven load, sudden load change, and overload during the lifting process of the platform. [0003] Due to the lack of effective simulation tools for rack and pinion meshing, as well as methods for detecting, evaluating and grinding rack tooth profile...

AI Technical Summary

Problems solved by technology

Due to the fact that in the actual manufacturing process, the racks need to be extended by multiple pieces and welded on the legs, and cannot be machined after welding

The tooth pitch of the rack, especially the tooth pitch at the interface, is prone to out-of-tolerance, or sudden changes in adjacent tooth pitches, resulting in problems such as uneven load, sudden load change, and overload during the platform lifting process

[0003] Due to the lack of effective simulation tools for rack and pinion meshing, as well as methods for detecting, evaluating and grinding rack teeth, the lifting load problem caused by the tooth pitch problem has not been well resolved.

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