Machine tool with automatic tool change

Details Machine tool with automatic tool change Machine tool with automatic tool change

1980-12-15

1982-11-02

Briggs, William R.

Metal working

Plural diverse manufacturing apparatus including means for...

Common reciprocating support for spaced tools

409232, 409233, B23Q 3157

Patent

active

043566219

ABSTRACT:
In a machine tool with an automatic tool change function, a rotatable tool spindle carries a movable key engageable with a key-way formed on a tool. A tool changing arm, serving as a tool support device, friction-rotatably supports at least one tool for selectively inserting and removing same into and from the tool spindle. When a tool change operation is to be performed, rotation of the spindle is changed into a predetermined speed permitting key-engagement. A detecting device is provided for detecting movement of the movable key to confirm engagement of the movable key with the key-way of the tool. A clamp device clamps the tool inserted into the spindle in response to the detecting device. After the tool is clamped on the spindle, rotation of the spindle is changed into a machining speed. A confirming device is provided for confirming that the spindle is reached at a predetermined angular position during rotation thereof. The tool change arm is operated to remove the tool from the spindle in response to the confirming device.

REFERENCES:
patent: 3191260 (1965-06-01), Jorgensen
patent: 3520228 (1970-07-01), Wohlfeil
patent: 3583280 (1971-06-01), Hart
patent: 3586343 (1971-06-01), Reed
patent: 3603203 (1971-09-01), Rhodes
patent: 3851562 (1974-12-01), Tomita
patent: 4008647 (1977-02-01), Hague
patent: 4172683 (1979-10-01), Shimajiri

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