Brinkman Products, Inc.

C.j. Winter Machine Technologies, Inc.

David G Cole

Paul W Allart

Liberato Pietrantoni

Robert J Brinkman

The present invention provides an improvement () in a Davenport&#xae; automatic screw machine having a stationary spindle. The improvement broadly includes a quick-change mechanism () associated with the stationary spindle (). The mechanism includes mating frusto-conical first and second surfaces () on the spindle and tool holder, and a multi-lead threaded connection () between the tool holder and stationary spindle such that the tool holder may be quickly locked into mating engagement with the stationary spindle by relative rotation therebetween through a short angular distance. The invention may also include an adjustment mechanism () that allows the axis (x&#x2014;x) of the tool to be aligned with the axis (x&#x2014;x) of a spaced rotatable spindle. This adjustment mechanism includes a base member (), an adjustment member (), and a locking mechanism () for selectively holding the adjustment member in the desired position relative to the base member.

Quick-change mechanism for use with the stationary spindle of a Davenport&#xae; automatic screw machine

An improved tool holder, such as a shave tool (), broadly includes: an adapter plate () adapted to be mounted on the screw machine () for controlled movement toward and away from the workpiece (W); a tool block () slidably mounted on the adapter plate for relative movement relative thereto along a first axis (x&#x2014;x); a slide body () mounted on the tool block for rotation relative thereto about a second axis (y&#x2014;y), an adjustment mechanism () acting between the slide body and the tool block for controllably varying the angular position of the slide body relative to the tool block; and a head () slidably mounted on the slide body for movement relative thereto along a third axis (z&#x2014;z). The head has a roller () and cutting tool (T) spaced from the roller.

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Rochester, NY, United States of America

David G Cole