Progressive die sensor

A progressive die sensor comprising:

• a housing for mounting on an upper punch holder;
• said housing including opposite side surfaces and an upper mounting surface that engages the upper punch holder when the housing is mounted thereon;
• a depression that opens upwardly in the housing along the mounting surface thereof and has opposite sides opening to the side surfaces of the housing and a rectangular cross section therebetween;
• means for mounting a downwardly extending probe on the housing in a spaced relationship from the depression for relative movement that indicates an unaligned workpiece condition;
• a switch received within the depression and including an actuating plunger;
• a switch cover secured within the housing depression and having downwardly extending side portions of rectangular cross sections between which the switch is received;
• said switch cover including an upper surface that defines a continuation of the upper mounting surface of the housing and which engages the punch holder along with the housing mounting surface during mounting thereon;
• said side portions of the switch cover including surfaces that form a continuation of the housing side surfaces at the opposite sides of the depression;
• means for positioning the switch with respect to the housing and the cover in the depression;
• and a push rod extending between the probe and the switch plunger to actuate the switch in response to probe movement indicating an unaligned workpiece condition such that an electrical signal may be generated when such a condition occurs.