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Indexed by:Journal Papers

Date of Publication:2015-11-01

Journal:PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE

Included Journals:SCIE、EI、Scopus

Volume:229

Issue:11

Page Number:1955-1962

ISSN No.:0954-4054

Key Words:Gear pitch deviation; error interference; gear-grinding technique; ultra-precision machining; grinding

Abstract:The ultra-precision master gear with high pitch accuracy has important applications in the calibration of high-precision gear measuring instruments or coordinate measuring machines and in military industries. In order to improve pitch deviations of ultra-precision gear, two gear-grinding techniques to improve pitch deviations of ultra-precision gear were proposed. First, based on the indexing plate system, the working principle of indexing plate and error transferring rules were discussed, and the technical approaches of decreasing the geometric eccentricity were proposed. Then according to the error interference principle, the offset-compensated technique and the neighbour-tooth translocation technique were proposed to improve the pitch machining accuracy of ultra-precision master gear. Finally, precision gear-grinding experiments were conducted by adopting the neighbour-tooth translocation technique based on offset-compensated technique. And the single pitch deviation f(p) of the test specimen is reduced from 1.06 to 0.63m and the total cumulative pitch deviation F-p is reduced from 3.11 to 1.98m with measurement uncertainty U-95=0.33m, which both reach the highest class (class 1 defining in ISO 1328-1:2013). The results show the efficiency and practicability of the two gear-grinding techniques to machine ultra-precision master gear.