Press forming method and tool for press forming
First Claim
1. A press forming method using a tool including a punch, a die, an outer circumferential punch and a sensor, the method comprising:
- a first process of measuring a deformation amount of the die of the tool by the sensor of the tool and obtaining a pressing force applied to the die of the tool by a workpiece material based on the deformation amount during press forming while independently driving each of the punch and the outer circumferential punch of the tool, and press forming the workpiece material; and
a second process of detecting that the tool is in a state approaching an overload state based on the pressing force applied to the die of the tool and adjusting at least one of an applied driving force, an applied driving speed, and an applied driving timing for at least one of the punch and the outer circumferential punch of the tool based on the detecting that the tool is in the state approaching the overload state based on the pressing force applied to the die of the tool.
2 Assignments
0 Petitions
Accused Products
Abstract
A press forming method includes a first process of obtaining a pressing force applied to each portion of a tool by an workpiece material during press forming while independently driving the respective each portion of the tool divided into multiple portions and press forming the workpiece material, and a second process of adjusting at least one of an applied driving force, an applied driving speed, and an applied driving timing for each portion of the tool to cause a processing portion of the workpiece material in which the state approaching an overload state is detected based on the pressing force to flow to other processing portions of the workpiece material.
6 Citations
14 Claims
-
1. A press forming method using a tool including a punch, a die, an outer circumferential punch and a sensor, the method comprising:
-
a first process of measuring a deformation amount of the die of the tool by the sensor of the tool and obtaining a pressing force applied to the die of the tool by a workpiece material based on the deformation amount during press forming while independently driving each of the punch and the outer circumferential punch of the tool, and press forming the workpiece material; and a second process of detecting that the tool is in a state approaching an overload state based on the pressing force applied to the die of the tool and adjusting at least one of an applied driving force, an applied driving speed, and an applied driving timing for at least one of the punch and the outer circumferential punch of the tool based on the detecting that the tool is in the state approaching the overload state based on the pressing force applied to the die of the tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification