Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Locking means
Patent
1993-09-15
1994-08-16
Luong, Vinh T.
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Locking means
74 53, 74567, 74569, B23B 2924, F16H 2508, F16H 5300
Patent
active
053376234
ABSTRACT:
An automatic tool change mechanism containing a cam shaft linked with a moter and a slotted cam. The cam shaft is driven by the motor to actuate the slotted cam to turn. The slotted cam is provided with a cam-profile groove, which is dimensioned so as to permit a driven roller to roll along the groove. The driven roller is caused to travel along the course of the cam-profile groove so as to cause an L-shaped rod to rock when the slotted cam is rotated by the cam shaft. The L-shaped rod is linked with a planetary gear, which engages a sector gear. The L-shaped rod contains a rocking section which actuates the planetary gear to turn. The planetary gear is connected with an output pitman, which is in turn coupled with a tool change shaft to cause the tool change shaft to engage in a linear motion. The driven roller also causes a turret, which is normal to the cam shaft, to rotate, and the rotation of the turret causes the tool change shaft to engage in a revolving motion. A tool change cycle is accomplished when the cam shaft completes a revolving cycle.
REFERENCES:
patent: 3585837 (1971-06-01), Bihler
patent: 3811330 (1974-05-01), Weichhand et al.
patent: 3922925 (1975-12-01), Takei et al.
patent: 3974705 (1976-08-01), Wittkamp
patent: 4625575 (1986-12-01), Le Bras
patent: 4667531 (1987-05-01), Kato et al.
patent: 5161420 (1992-11-01), Feng
Huang Kuo-Jao
Lee Chung-Ming
Li Chi-An
Liu Yeong-Kuang
Industrial Technology Research Institute
Liauh W. Wayne
Luong Vinh T.
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