Tool clamping device for multiple-operation machines
AssigneeInstitute za Metalloobraborvashti Machini
InventorNikola Dimov Stoilov
Life of this patent
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Abstract
A tool clamping device for multiple-operation machines or machining centers. The device has a self-blocking fork for selectively securing a tool on a tool changing device or autooperator, the fork being in the shape of jaws which partially embrace the shank of a tool. In both arms of the fork there are profile grooves in which there are located pivotally mounted blocking pins. Between the blocking pins and the bottom wall of the grooves there are springs for constantly pressing the blocking pins toward their blocking position. The blocking pins are L-shaped, and in their blocking position the end of one arm of each protrudes outwardly in position to be engaged by the face keys of the spindle of the machine in the operation of removing a tool from the spindle of the machine.
Claims3
In the combination of a multiple-operation machine having a spindle with a pair of face keys and a tool changer therefor, an improved tool clamping device, comprising a self-blocking fork having a pair of arms adapted partially to embrace the shanks of a tool, wherein in both arms of the fork there being profile grooves, blocking pins pivotally mounted in respective ones of the grooves and springs between the blocking pins and the bottom wall of the grooves for continually pressing the blocking pins toward their tool blocking positions, the blocking pins having portions which are so disposed as to be engageable by the face keys on the spindle of the multiple-operation machine upon the approach of a spindle to the tool-changing position of the tool clamping device, thereby to thrust the blocking pins to the tool unblocking position.
Dependencies are inferred from the claim text.