The forming method has been widely used for manufacturing screw rotors with helical profile. This paper takes the manufacturing of screws for screw pumps as an example and uses the cubic spline interpolation method to obtain the tooth profile of the screw forming cutter according to the tooth profile at any end section of screws composed of discrete points and based on the principle of gearing mesh. Furthermore, this paper studies the space enveloping and geometric characteristics between the screw and cutter during the manufacturing process, combines the shape of the contact line, which is generated due to the cooperative motion of the machine tool, screw, and cutter, with spatial location parameters, and thus innovatively proposes a design method for the screw forming cutter based on discrete points, namely, the form-position geometric method (FPGM). It can be seen after comparing the proposed method with the principle of gear meshing that the cutter-workpiece enveloping solution model, simplified by the FPGM, can overcome the key technical difficulty, i.e., it is difficult to accurately calculate the cusp of the tooth curve; meanwhile, the proposed method can improve the precision of the cutter tooth profile design. Finally, the feasibility and superiority of FPGM are verified by experiments.
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August 2015
Design Innovation Paper
Design Method for Screw Forming Cutter Based on Tooth Profile Composed of Discrete Points
Qian Tang,
Qian Tang
State Key Laboratory of Mechanical Transmission,
e-mail: tqcqu@cqu.edu.cn
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: tqcqu@cqu.edu.cn
Search for other works by this author on:
Yuanxun Zhang,
Yuanxun Zhang
1
College of Aerospace Engineering,
e-mail: yuanxun.zhang@yahoo.com
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: yuanxun.zhang@yahoo.com
1Corresponding author.
Search for other works by this author on:
Zhenwei Jiang,
Zhenwei Jiang
State Key Laboratory of Mechanical Transmission,
e-mail: jzw50123@126.com
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: jzw50123@126.com
Search for other works by this author on:
Di Yan
Di Yan
State Key Laboratory of Mechanical Transmission,
e-mail: mcyandi@163.com
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: mcyandi@163.com
Search for other works by this author on:
Qian Tang
State Key Laboratory of Mechanical Transmission,
e-mail: tqcqu@cqu.edu.cn
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: tqcqu@cqu.edu.cn
Yuanxun Zhang
College of Aerospace Engineering,
e-mail: yuanxun.zhang@yahoo.com
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: yuanxun.zhang@yahoo.com
Zhenwei Jiang
State Key Laboratory of Mechanical Transmission,
e-mail: jzw50123@126.com
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: jzw50123@126.com
Di Yan
State Key Laboratory of Mechanical Transmission,
e-mail: mcyandi@163.com
Chongqing University
,174 Shazheng Street
,Shapingba, Chongqing 400030
, China
e-mail: mcyandi@163.com
1Corresponding author.
Contributed by the Power Transmission and Gearing Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received July 16, 2014; final manuscript received May 6, 2015; published online June 16, 2015. Assoc. Editor: Zhang-Hua Fong.
J. Mech. Des. Aug 2015, 137(8): 085002 (9 pages)
Published Online: August 1, 2015
Article history
Received:
July 16, 2014
Revision Received:
May 6, 2015
Online:
June 16, 2015
Citation
Tang, Q., Zhang, Y., Jiang, Z., and Yan, D. (August 1, 2015). "Design Method for Screw Forming Cutter Based on Tooth Profile Composed of Discrete Points." ASME. J. Mech. Des. August 2015; 137(8): 085002. https://doi.org/10.1115/1.4030648
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