Shaft keyway symmetry measuring device

Abstract

The invention discloses a shaft keyway symmetry measuring device, and belongs to the field of machining accuracy measurement. The shaft keyway symmetry measuring device comprises a vernier caliper, a movable lever measuring jaw, a hanger spring and a dial indicator, a dial indicator clamp sleeve is mounted at a fixed end of the vernier caliper, the dial indicator is mounted on the dial indicator clamp sleeve, the 'L'-shaped movable lever measuring jaw is mounted at the fixed end of a right-angle main scale of the vernier caliper by the aid of a rivet shaft copper bush, one end of the hanger spring is hooked on a vertical side of the movable lever measuring jaw, the other end of the hanger spring is hooked at the outer end of the fixed end of the right-angle main scale, the dial indicator is sleeved in the dial indicator clamp sleeve, the bottom end of the dial indicator contacts with a horizontal side of the movable lever measuring jaw, a spherical measuring head hole is arranged at a measuring head position of the movable lever measuring jaw, a steel ball is pressed into the spherical measuring head hole, a lengthened moving end is arranged at a moving end of the vernier caliper, and the length of the lengthened moving end is matched with the diameter of a measured shaft. The shaft keyway symmetry measuring device has the advantages of simple structure, convenience in operation, wide measuring range, high precision, light weight, portability and capability of meeting the requirement on machining measurement of shaft keyway symmetry.

Description

Technical field [0001] The invention relates to a device for measuring the symmetry of a shaft key groove, which belongs to the field of machining accuracy measurement. Background technique [0002] Symmetry measurement of shaft keyway is widely used in motors, machine tools, automobile manufacturing and all shaft parts connected by keyway. At present, the method of measuring the symmetry of the shaft keyway mainly uses the V-shaped iron, flat plate, dial indicator and the general name of the meter seat to measure the meter. This method is inconvenient to operate, cumbersome measurement methods, and poor accuracy and reliability. Summary of the invention [0003] To solve the above problems, the present invention provides a device for measuring the symmetry of the shaft keyway. [0004] The present invention is realized by the following technical solutions: a shaft keyway symmetry measuring device, including a vernier caliper, the fixed end of the vernier caliper is installed with...

AI Technical Summary

Problems solved by technology

This method is inconvenient to operate, the measurement method is cumbersome, and the accuracy and reliability are poor.

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