초록 ▼

A method and apparatus for detecting the length of wire blanks in a wire cutting machine is disclosed, the machine including feed apparatus for feeding wire stock into the cutting machine, stop apparatus for engaging one end of the wire stock at a predetermined length in the cutting machine, and cut

A method and apparatus for detecting the length of wire blanks in a wire cutting machine is disclosed, the machine including feed apparatus for feeding wire stock into the cutting machine, stop apparatus for engaging one end of the wire stock at a predetermined length in the cutting machine, and cutting apparatus for cutting wire blanks from the wire stock. When the leading end of the wire stock engages the stop apparatus with a predetermined pressure, the blank is at a proper length to be cut. The pressure causes the stop apparatus to expand radially. Strain gauges mounted about the stop apparatus detect the expansion by generating an electrical signal when connected in a bridge circuit. The strain gauges detect an over feed situation when the stop apparatus expands beyond a predetermined point. Similarly, an under feed situation is detected when little or no expansion of the stop apparatus is sensed. The strain gauge signal is utilized by the machine operator or automatic control apparatus to control the feed apparatus whereby wire blanks are cut at the desired length. The stop apparatus includes a cylindrical member having a threaded axial aperture formed therein for receiving a screw having one end for receiving the pressure and the other end slotted for adjusting the blank length.

대표청구항 ▼

An apparatus for determining the desired cut length for producing wire blanks in a wire cutting machine having feed means for feeding one end of wire stock into the cutting machine, cutting means for cutting wire blanks from the wire stock and stop means for engaging the one end of the wire stock at

An apparatus for determining the desired cut length for producing wire blanks in a wire cutting machine having feed means for feeding one end of wire stock into the cutting machine, cutting means for cutting wire blanks from the wire stock and stop means for engaging the one end of the wire stock at a predetermined distance from the cutting means, comprising: means responsive to the pressure applied to the stop means by the wire stock for generating a infinitely variable blank length signal representing the magnitude of the applied pressure and means responsive to said blank length signal for controlling the feed means whereby wire blanks of a desired length are cut.