Patent ID: 6874395
Filing Date: 2005-04-05
Classification: B26D,H05K,Y10T

Abstract:
1. A punching device, comprising: a main stand, to which is fixed a die which is provided with a die hole in its upper surface; a table, which is provided so as to be shiftable with respect to said main stand, which is formed with a hole approximately in its central portion for exposing said die, and which further is made so that a workpiece is mountable upon its upper surface; a shift mechanism which shifts said table with respect to said main stand; a raising and lowering mechanism which is arranged above said table and raises and lowers a punch plate to which is fitted a punch which is engageable into said die hole; a first photographic device, which is fixed in a position removed from a raising and lowering track of said punch plate, and which photographs a first image which shows a position of said die hole in said die, and a second image which shows a position of a pattern which indicates the position upon said workpiece which is to be punched; and a shifting control means which controls said shift mechanism according to said first and second images which are photographed by said first photographic device, so as, by shifting said table, to align a position of said pattern which indicates the position upon said workpiece which is to be punched to the position of said die hole in said die.