Research on S-gear design, manufacturing and measuring based on NC machining center

Ren, Shaoying; Wang, Yanzhong; Li, Yuan

doi:10.1177/0954405420981346

Cited by 3 publications

(2 citation statements)

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“…Therefore, in order to meet the development needs of modern equipment, researchers have invented various geometric shapes of non-involute gears to improve the bearing capability and efficiency of gear transmission [3,4]. Hlebanja [5] studied an S-shaped gear with a curved meshing line, and analyzed the sensitivity of the new gear transmission to center distance error.…”

Section: Introductionmentioning

confidence: 99%

Computerized Simulation of Meshing of S-gears and Modification Geometry

Cui

Xiao

2023

J. Phys.: Conf. Ser.

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S-gear is a new type of gear with the advantages of small sliding coefficient, high meshing efficiency and large load-bearing capacity due to the concave-convex contact in a vicinity of the meshing start and end. In view of the excellent characteristics and potential value of S-gears, this paper deeply studies the designation and meshing characteristics of the S-gears. First, based on the relationship of S-shaped rack-cutter and machining motion, the tooth surface of the S-gears is generated. Second, by superimposing the surface of modified volume with the standard tooth surface, the modified tooth surface of S-gears is constructed. On this basis, using MATLAB programming, the coordinates of 3D grid node of modified S-gears are calculated. Third, loaded tooth contact analysis (LTCA) is used to study the meshing characteristics of the S-gears with longitudinal modifications and misalignment angle errors. Ultimately, one example is presented and the result shows that after tooth surface modification, the load distribution of S-gears is effectively improved and error sensitivity is greatly reduced. S-gear is a new type of gear which is different from involute gears and has great potential application prospect in large load-bearing field, which will be further studied in the future.

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Section: Introductionmentioning

confidence: 99%

Computerized Simulation of Meshing of S-gears and Modification Geometry

Cui

Xiao

2023

J. Phys.: Conf. Ser.

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“…However, the contact method is difficult to measure for small and easily deformed workpieces, and the uncertainty is too high. Ren et al 22 present a design, manufacturing, and measuring S-gear method. The polynomial curve is used to construct the tooth profile of the S-gear based on the Gear Meshing Theory.…”

Section: Introductionmentioning

confidence: 99%

Profile design and simulation verification of hard whirling tool for ZC1 worm machining

Dai

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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The profile of the hard whirling tool for ZC1 worm machining is challenging to design precisely. An inaccurate tool profile results in irreversible overcutting or additional machining allowance. This study aimed to develop an accurate tool profile design method and digital verification approach to enhance the quality of ZC1 worms. The precise measurement and axial section data acquisition of the worm are conducted. A tool profile design method is proposed based on the envelope of the equidistant axial section. The motion law of whirling is studied, and a 3D model generation procedure for worm teeth is developed. The effect of the tool profile design is verified, and the impact of cutting parameters on worm tooth profile error is analyzed. The results show that the presented tool design method can effectively avoid overcutting. The employed modeling approach of worm teeth provides an intuitive verification means for tool profile design. Variable cutting parameters lead to different machining errors, and the maximum error is less than 3 μm. Changing the cutting parameters will not induce macro profile error but will impact the micromorphology. These findings should be valuable for designing envelope machining tools with complex motion and realizing the superior performance of hard whirling for ZC1 worm machining.

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