Two-dimensional laser optical path gear measuring device

Abstract

The invention discloses a two-dimensional laser optical path gear measurement device. The device comprises a main motion shaft system, an optical path tracking and adjustment shaft system, and a laser interferometry system. The main motion shaft system comprises a rotary table and three linear motion shaft systems, moves along a measurement planning path, and executes various operations in the whole measurement process. Three linear motion shafts of the optical path tracking and adjustment shaft system make synchronous movement with the main motion shaft system, thereby guaranteeing that a laser optical path is not cut off and is in a collimation state. The laser interferometry system has X and Z two-dimensional laser wavelength measurement optical paths, is disposed nearby a gear tested point, and can directly measure a plurality of error items of a gear. The device is short in measurement chain, is high in measurement precision, is high in flexibility, and can meet the requirements of direct tracing measurement of gear errors.

Description

technical field [0001] The invention belongs to the technical field of precision instrument manufacturing and measurement, and in particular relates to a gear measuring device with a two-dimensional laser light path. Background technique [0002] At present, devices for analytical measurement of gears are mainly divided into mechanical generative measurement devices and CNC coordinate measurement devices. The mechanical generation measuring device relies on the precision mechanical mechanism to obtain the standard tooth surface characteristic line (involute or helical line). The mechanical mechanism is complex and the flexibility is poor. The same gear needs multiple instruments to measure. Single disc involute tester, tooth shape and direction tester, etc. The CNC coordinate measuring device forms a developing system through a computer, a servo drive device and a transmission device, and carries out coordinate measurement on gears. Its mechanical mechanism is simple, flexi...

AI Technical Summary

Problems solved by technology

CNC coordinate measuring device is the mainstream of development at present, but compared with mechanical generation measuring device, its measurement chain is longer and it is easily affected by various shafting errors

For high-precision gear measurement, such as the measurement of standard gears and gear templates, the measurement device is required to have a short measurement chain and high measurement accuracy. The measurement results can be directly traced to the definition of the wavelength meter. At the same time, the measurement flexibility is strong, and the same device can meet multiple requirements. For the measurement of each parameter, the above two types of devices have their own defects and cannot meet the requirements. Therefore, it is of great significance to establish a traceable measurement device with short measurement chain, high precision, strong flexibility and automation.

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