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Machine tool numerical control rotary table movable teeth transmission capable of eliminating gap

A digital control turntable and movable tooth transmission technology, applied in the direction of gear transmission, transmission, transmission parts, etc., can solve the problems of increasing the wear of the meshing pair, increasing the transmission load, increasing the radial size of the mechanism, etc., and achieving high stability , Improve the running accuracy and ensure the stability

Active Publication Date: 2019-05-03
枣庄北航机床创新研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of errors in the manufacturing and assembly process and the wear of the meshing pair during the transmission process, there is an inevitable meshing gap in the typical movable tooth structure. The existence of the meshing gap will also cause vibration and impact during the transmission process, affecting Its rotation performance limits the application of movable gear drive on CNC turntable
[0004] The Journal of Mechanical Design, Volume 33, Issue 7, 17-20, also published "Research on Automatic Backlash Elimination Swing Rod and Movable Gear Transmission", which processed the traditional shock wave disc and roller cylindrical surface into a conical surface, and added axial force to the shock wave disc. The load causes the axial displacement of the shock wave disc, limits the radial movement of the rollers, and eliminates the transmission gap, but increases the transmission load and increases the wear of the meshing pair when eliminating the transmission gap
[0005] Patent CN108194610A "A Swing Rod Movable Tooth Reducer with Anti-Backlash Structure" changes one roller into a roller group consisting of two rollers, and adds elastic elements between the two rollers in the same group to realize It eliminates the clearance of the movable tooth transmission, but the structure is complicated and the radial dimension of the mechanism is increased

Method used

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  • Machine tool numerical control rotary table movable teeth transmission capable of eliminating gap
  • Machine tool numerical control rotary table movable teeth transmission capable of eliminating gap
  • Machine tool numerical control rotary table movable teeth transmission capable of eliminating gap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 1-4 As shown, a movable tooth transmission device for CNC turntable of a machine tool capable of eliminating backlash includes an output end cover 1, a first end cover 3, a first shock wave internal gear 4, a moving part assembly 5, and a second shock wave internal gear 6 and the second end cover 7, the first shock wave internal gear 4 is attached to the second shock wave internal gear 6, and one side of the first shock wave internal gear 4 is provided with a first end cover 3, the One side of the second shock wave internal gear 6 is provided with a second end cover 7, and the inner cavity of the first shock wave internal gear 4 and the second shock wave internal gear 6 is provided with a moving part assembly 5. The side of the component assembly 5 facing the second end cover 7 is the input end, the side of the moving part assembly 5 facing the first end cover 3 is the output end, and the input end of the moving part is connected to the second end cover ...

Embodiment 2

[0061] Such as Figure 10-15 As shown, on the basis of embodiment 1, the rolling body 2 of the first rolling bearing 17, the rolling body 12 of the second rolling bearing 24 and the rolling body 19 of the third bearing in the first embodiment are removed, and replaced by the Turntable bearing 30.

[0062] Such as Figure 16-18 As shown, the roller support frame includes a frame body 151, and the center of the frame body 151 is provided with an inner hole 152,

[0063] Described frame body 151 is provided with pin fixing hole 154, and described pin fixing hole 154 is provided with a plurality of, and described pin fixing hole 154 is circumferentially evenly distributed on frame body 151, and is set between two described pin fixing holes 154. There is a roller fixing hole 153, the stick fixing hole is a long hole, the first end of the long hole is arranged on the frame body 151, and the other end extends to the outer circumference of the frame body 151 and penetrates the outer...

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Abstract

The invention discloses a machine tool numerical control rotary table movable teeth transmission capable of eliminating a gap. The transmission comprises an output end cover, a first end cover, a first shock wave inner gear, a movable component assembly, a second shock wave inner gear and a second end cover, wherein the first shock wave inner gear fits the second shock wave inner gear; the first end cover is arranged on one side of the first shock wave inner gear; the second end cover is arranged on one side of the second shock wave inner gear; the movable component assembly is arranged in a cavity of the first shock wave inner gear and the second shock wave inner gear; the side, facing towards the second end cover, of the movable component assembly is an input end; a first bearing is arranged between the output end of the movable component assembly and the first end cover; and an output end cover is arranged on the end face of the output end. The first shock wave inner gear and the second shock wave inner gear are arranged, and the movable component assembly is arranged in the first shock wave inner gear and the second shock wave inner gear, so that the transmission can eliminatethe movable gap during the moving process to improve the operating precision of a machine tool numerical control rotary table.

Description

technical field [0001] The invention belongs to the technical field of machine tool turntable mechanisms, and in particular relates to a movable tooth transmission device of a numerical control turntable of a machine tool capable of eliminating backlash. Background technique [0002] As the core component of multi-axis CNC machine tools and industrial machines, precision turntables have a wide range of market applications. Traditional CNC turntables mostly use worm gear reducers, gear reducers, harmonic reducers, RV reducers, etc. as reduction drives. mechanism. Worm gear reducers and gear reducers are easy to wear during use, which reduces the indexing accuracy and is difficult to meet the needs of high-precision machine tools; harmonic reducers and RV reducers are high in quality and reliable in function, but they are monopolized by foreign countries due to their production technology The price is high. [0003] As the original technology of our country, movable tooth tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H49/00F16H1/32F16H57/021F16H57/023F16H57/08F16H57/12
Inventor 陈志同崔传辉张黎明高星
Owner 枣庄北航机床创新研究院有限公司