Keyway depth measuring device

Abstract

The present application discloses a keyway depth measuring device which comprises a supporting base for supporting a work piece with a keyway, a measuring support fixed on the supporting base, a standard gauge block which is arranged between the supporting base and the measuring support and is installed on the supporting base and can move relative to the supporting base, and a measurement part which is fixed to the measuring support and is in contact with the standard gauge block in a movement direction of the standard gauge block and is used for detecting the movement amount of the standard gauge block. By applying the device, since the work piece with the keyway is fixed to the support base, the standard gauge block can convert the depth of the keyway into a movement amount of the standard gauge block, the measurement part can convert the movement amount of the standard gauge block into readable data, thus the depth of the keyway can be obtained through reading the data of the measurement part, the operation process is simple, and a manual error is also avoided. Therefore, the keyway depth of the work piece can be measured quickly and accurately.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a keyway depth measuring device. Background technique [0002] On transmission parts, such as gears, pulleys, shafts, etc., there are usually keyways for torque transmission. In addition, there are keyways for machining positioning of complex parts. The depth of the keyway has an important influence on the machining accuracy and assembly accuracy of the equipment, so it is particularly necessary to detect the depth of the keyway. [0003] At present, there are two commonly used methods for measuring the depth of keyways as follows: [0004] One is to measure the depth of the keyway with a vernier caliper or a screw micrometer, and clamp the fixed end and the adjustable movable end of the ruler between the shaft section where the keyway is located and the bottom surface of the keyway respectively. During the process, the vernier caliper is very easy to clamp the point to be...

AI Technical Summary

Problems solved by technology

[0004] One is to measure the depth of the keyway with a vernier caliper or a screw micrometer, and clamp the fixed end and the adjustable movable end of the ruler between the shaft section where the keyway is located and the bottom surface of the keyway respectively. During the process, the vernier caliper is very easy to clamp the point to be measured, resulting in a large measurement error

[0005] The second is to use a three-coordinate detector for detection. Each detection needs to repeatedly and accurately adjust the positions of the X-axis, Y-axis, and Z-axis so that the probe can be accurately moved to the measured point. Although this method measures Higher accuracy, however, slower measurement speed

Images