Tool failure detection apparatus
First Claim
1. A tool failure detection apparatus for a working machine having a working tool movable relative to a workpiece, said detection apparatus comprising:
- means for irradiating light onto a surface of a working area of said work piece;
means for receiving reflection light reflected from said workpiece and detecting at least either one of a worked void of said working area and said working tool;
means for calculating an area of a detected image within a predetermined region;
means for setting a reference value based on a particular area of the detected image obtained when said working tool is not broken; and
means for comparing said reference value with the area calculated by said calculating means and judging whether or not said working tool is broken.
1 Assignment
0 Petitions
Accused Products
Abstract
In a tool failure detection apparatus for a working machine such as a drilling machine for circuit boards, light is irradiated onto a workable area of a workpiece, and reflection light from the workable area is picked up by an imaging unit to produce a video signal. A video signal indicative of at least either one of a tool image and a worked void image which is picked up within a predetermined region of a picture is sampled to calculate an image area. A comparator compares a calculated image area with a preset reference value indicative of normality of the tool to judge whether the tool is normal or broken.
45 Citations
5 Claims
-
1. A tool failure detection apparatus for a working machine having a working tool movable relative to a workpiece, said detection apparatus comprising:
-
means for irradiating light onto a surface of a working area of said work piece; means for receiving reflection light reflected from said workpiece and detecting at least either one of a worked void of said working area and said working tool; means for calculating an area of a detected image within a predetermined region; means for setting a reference value based on a particular area of the detected image obtained when said working tool is not broken; and means for comparing said reference value with the area calculated by said calculating means and judging whether or not said working tool is broken. - View Dependent Claims (2, 3, 4, 5)
-
Specification