Gear cutting – milling – or planing – Milling – Cutter spindle or spindle support
Patent
1979-12-17
1981-09-22
Hinson, Harrison L.
Gear cutting, milling, or planing
Milling
Cutter spindle or spindle support
279 75, 408239A, B23B 526, B23B 3110, B23B 522
Patent
active
042907209
ABSTRACT:
The device is primarily designed to be used with vertical milling machines. This device may also be adapted to any machine tool spindle which uses an internally tapered end to hold the tool holder, collets, etc. etc. Due to the fact that this mechanism functions internally, it does not take away any of the machine's capabilities and no modifications are required to the existing spindle. Basically the device is composed of two major parts: the chuck that goes keyed inside the spindle and the air cylinder which is disposed on the side axially opposite from the chuck and fixed to the body of the machine. The chuck has an axially disposed plunger, a compression spring and two sets of spheres connected by a set of pins. The plunger is shaped to force radially outward a first set of spheres which in turn activates a second set of locking spheres to cause them to move radially inward and engage the tool holder. To release the tool holder the air cylinder actuates a piston rod that compresses the spring which pushes the shaped plunger causing the locking spheres to move radially outward to release the tool holder.
REFERENCES:
patent: 3583280 (1971-06-01), Hart
patent: 3851562 (1974-12-01), Tomita et al.
patent: 4075927 (1978-02-01), Frazier
patent: 4122755 (1978-10-01), Johnson et al.
patent: 4148246 (1979-04-01), Johnson et al.
patent: 4188041 (1980-02-01), Soderberg
Hinson Harrison L.
R. F. B. Engineering Inc.
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