Patent ID: 11890661
Assignee: HEFEI UNIVERSITY OF TECHNOLOGY
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 4:
5. The method of claim 1, wherein dividing the blank holder of the stamping device into the plurality of blank holder areas based on the contour characteristic of the workpiece to be stamped comprises:
obtaining the contour characteristic of the workpiece to be stamped;
dividing the blank holder of the stamping device into s areas in a circumferential direction based on the contour characteristic of the workpiece to be stamped, where s is an integer greater than 1;
for an ith area, where i∈{1, 2, . . . , s), dividing the ith area into ki blank holder areas in a radial direction based on a width of a flange area corresponding to the sheet material and a thread parameter of a pressure sensor, where ki is an integer greater than or equal to 1, each blank holder area corresponds to a pressure sensor and a blank holder block, and the pressure sensor is connected to the blank holder block by threads; and
controlling the blank holder force dynamically for each blank holder area to stamp the sheet material, so as to obtain the workpiece to be stamped.