This study considered the effects of needle penetrating force, needle thread tightening tension, and pressing force of the presser foot on torque produced in the arm shaft of an industrial sewing machine. The results obtained are as follows. (1) Penetrating force, especially the initial triangular wave fluctuation, induces noticeable transient vibration in torque. (2) The penetrating force is considerably more transient than the pressing force. The time ratio of the duration of the penetrating force to the natural period of the motion system is close to 1. (3) Consequently, when estimating torque, it is necessary that the arm shaft of the thread take-up lever and needle bar mechanism motion system be considered as elastic. On the other hand, the arm shaft of the feed mechanism motion system can be treated as a rigid body.
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December 1990
Research Papers
Transient Torque Produced in Arm Shaft of an Industrial Sewing Machine
N. Muramatsu
N. Muramatsu
Nagoya Works, Mitsubishi Electric Corporation, Nagoya, Aichi, Japan
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N. Muramatsu
Nagoya Works, Mitsubishi Electric Corporation, Nagoya, Aichi, Japan
J. Mech. Des. Dec 1990, 112(4): 538-543 (6 pages)
Published Online: December 1, 1990
Article history
Received:
November 1, 1989
Online:
June 2, 2008
Citation
Muramatsu, N. (December 1, 1990). "Transient Torque Produced in Arm Shaft of an Industrial Sewing Machine." ASME. J. Mech. Des. December 1990; 112(4): 538–543. https://doi.org/10.1115/1.2912643
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