Views: 0 Author: Site Editor Publish Time: 2022-10-03 Origin: Site
Gear measuring instrument is a relatively rich concept. It not only includes instruments for detecting various gears, but also includes instruments for detecting worm gears, worms, gear cutters and transmission chains. There are many kinds of gears and complicated geometric shapes, so there are many parameters to represent their errors. Therefore, there are many kinds of gear measuring instruments. The research on gear measuring technology and its instruments has a history of nearly a hundred years. In this short development process, there are six landmark events:
(1) In 1923, German Zeiss Company successfully developed an instrument called "Tooth Surface Tester" for the first time in the world. In fact, it is a mechanical generative universal involute tester. On this basis, after improvement, Zeiss launched a practical instrument in 1925 and put it on the market. The length reference of the instrument adopts an optical glass line ruler with a line spacing of 1 μ m. The appearance of this instrument marks the beginning of gear precision measurement. VG450, which is widely used in China, is an improved product of this instrument.
(2) At the beginning of the 1950s, the appearance of the universal spiral standard instrument of mechanical generation marked the realization of comprehensive control of gear quality.
(3) In 1965, Dr. R. Munro of the United Kingdom successfully developed a grating type single meshing instrument, marking the possibility of high-precision measurement of gear dynamic performance.
(4) In 1970, the gear overall error measurement technology developed by Chinese engineers and technicians, mainly Huang Tongnian, marked the beginning of measuring gears with kinematic geometry.
(5) In 1970, the American Fellow Company exhibited Microlog50 at the Chicago Expo, marking the beginning of the use of the CNC gear measurement center.
(6) In the late 1980s, Osaka Seiki introduced the non-contact tooth surface analyzer PS-35 based on the optical holographic principle, marking the beginning of the non-contact gear measurement method.
On the whole, the development of gear measuring technology in the past century is mainly reflected in the following aspects:
(1) In terms of measurement principle, the development from "comparative measurement" to "meshing motion measurement" to "modeling measurement" has been realized;
(2) In terms of the technical means to realize the measurement principle, it has gone through the evolution from "machinery oriented" to "electromechanical integration", until today's "optical mechanical electrical" and information technology integration;
(3) In terms of expression and utilization of measurement results, it has experienced a leap from "indicator plus visual reading" to "recording instrument recording plus manual research and judgment", to "computer automatic analysis and feedback of measurement results to the manufacturing system". At the same time, gear measuring instruments have experienced the evolution from single variety and single parameter instruments (typical instruments include single disk involute tester), single variety and multi parameter instruments (typical instruments include tooth profile and tooth direction tester) to multi variety and multi parameter instruments (typical instruments include gear measuring center).
