The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 1999
Filed:
Mar. 12, 1998
Wen-Miin Hwang, Tainan, TW;
Chii-Zen Yu, Tainan, TW;
National Science Council, Taipei, TW;
Abstract
A tool exchange device is capable of automatically and swiftly exchanging tools during non-cutting processes. The tool exchange device includes a motor; a belt assembly capable of being driven by the motor; a reduction gear assembly having a worm engaged with the belt assembly, and a worm gear meshed with the worm; a compound cam having a concave globoidal cam, a first grooved face cam, a first cam follower, a second grooved face cam, and a second cam follower; a swap assembly having a swap arm, a rotation shaft affixed to the swap arm, and a set of rollers affixed to the rotation shaft and meshed with the grooves formed on the concave globoidal cam so as to drive the swap arm to rotate around its own axis through the compound cam; a force multiplying mechanism having a pivoted lever and a toggle assembly, and a slider, the pivoted lever being activated by the second cam follower of the compound cam so as to drive the slider to move reciprocally; and a head shaft having a head shaft housing, a push-pull rod, and a set of pan spring. The pan spring constantly urges the rod upward so as to clamp the tool during the cutting operation.