The National Machinery Company

Dale A Wisebaker

Richard Edmondson

A sensing probe for monitoring working forces in compressive elements such as found in presses and other machine tools. The probe has an elongated configuration which allows it to be mounted at a point remote from its load sensing end and enables it to be conveniently used with a plurality of like probe units in relatively confined spaces. A wedge profile of its sensing end permits the probe to be preloaded in compression for an increase in accuracy and reliability.

Load detecting probe

A forging machine is disclosed which is provided with means to determine when an undersized or short blank is produced by the shear and to provide for the automatic rejection of such blank. Such short blanks can occur if the stock feed into the shear is insufficient. The illustrated embodiment includes a shear for progressively cutting blanks from the forward end of a piece of stock in which the shear is provided with a load cell in the stock gauge to determine when improper feeding has occurred. Such load cell includes a strain gauge and the signal produced by the strain gauge actuates an overstroke ejection which pushes the blank from the first working station through the transfer fingers so that it does not transfer to a subsequent work station. The overstroke is provided by a piston and cylinder actuator mounted on the ejector lever which operates in response to a signal that the blank in the work station is of improper size.

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Tiffin, OH, United States of America

Dale A Wisebaker