Driving Torque Model and Accuracy Test of Multilink High-Speed Punch

Table 4

The influence of the change of the crank radius.

	Crank radius/mm
	10	15	20	25
The torque of overcoming the inertia force/N·m.	3234.7	2394.9	2397.1	2841.5
The torque of overcoming the stamping force/N·m.	1507.9	1694	1673.3	1497.5
The angle of nominal force stroke/°	146	143	134	120