Thread cutting die head for power driven threading machines
Номер патента: CA1255459A
Опубликовано: 13-06-1989
Автор(ы): Robert J. Hayes, Ronald M. Mahl
Принадлежит: EMERSON ELECTRIC CO
Опубликовано: 13-06-1989
Автор(ы): Robert J. Hayes, Ronald M. Mahl
Принадлежит: EMERSON ELECTRIC CO
Реферат: THREAD CUTTING DIE HEAD FOR POWER DRIVEN THREADING MACHINES Abstract of the Disclosure An annular thread cutting die head for a power driven threading machine is comprised of an annular support plate supporting a plurality of radially dis-placable thread cutting dies spaced apart about the axis of the die head, and an annular cam plate assembly coaxial with and pivotal relative to the support plate to radially displace the cutting dies. The cam plate assembly is spring biased to pivot relative to the support plate in the direction to radially retract the cutting dies, and is selectively operable relative to the support plate to achieve the cutting of a straight thread or to achieve the cutting of a tapered thread. In connection with the cutting of a tapered thread, receding replacement of the cutting tools is controlled by a unique cam arrangement on the machine carriage engaged by the cam plate assembly under the spring bias and independent of torque imposed on the die head during the threading operation.
Adjustable die head
Номер патента: US5480271A. Автор: Michael W. Kelly,Glenn F. Jorgensen. Владелец: Power House Tool Inc. Дата публикации: 1996-01-02.