Tool shaft with detachable blade having wedge groove contacting a movable wedge
AssigneeSandvik AB
InventorThomas Hedlund
Life of this patent
Estimating the term…
Abstract
A cutting tool for metal machining, in particular for grooving and parting operations, comprises a cutting insert-holding blade part (2) and a tool shaft (1), whereby both are formed with mutually matching joint portions. The blade part has a wedge groove (13) and the tool shaft a wedge part (18). This wedge part (18) comprises a movable wedge (20) with which the width of the wedge part can be varied in order to obtain a play-free joint with the wedge groove of the blade part.
Claims16
A tool shaft for securement to a blade part to form a cutting tool, the tool shaft comprising a wedge part for interaction with a wedge groove on said blade part, the wedge part to vary a distance between opposite first and second abutment surfaces of the remainder of the wedge part and the movable wedge so that a positive connection can be obtained between the blade part and the tool shaft by contacting the abutment surfaces with the wedge groove, the wedge part and the movable wedge having respective contact surfaces which are continuously in contact with each other while the distance between opposite first and second abutment surfaces is varied.
Cutting tool for metal machining comprising:
- a blade part with a cutting insert and a tool shaft detachably connected to the blade part, whereby the blade part and the tool shaft are each provided with a joint portion adapted to each other,
- the joint portion of the blade part including a wedge groove having opposed first and second groove surfaces and the joint portion of the tool shaft including a wedge part fitting into the wedge groove,
- the wedge part including a first contact surface, an upper abutment surface for abutting the first groove surface of the wedge groove and a movable wedge, the movable wedge having a second contact surface for contacting the first contact surface and a lower abutment surface for abutting the second groove surface of the wedge groove, wherein a distance between the upper abutment surface and the lower abutment surface can be varied in order to obtain a play-free joint with the wedge groove by moving the first and second contact surfaces in continuous contact with one another.
A cutting tool comprising:
- a blade part including a cutting insert and a joint portion;
- a tool shaft including a joint portion detachably connected to the joint portion of the blade part;
- one of the joint portions including a wedge groove and another of the joint portions including a wedge part fitting into the wedge groove;
- the wedge groove having opposed first and second groove surfaces;
- and
- the wedge part having a distance between opposed first and second abutment surfaces and including a wedge which is movable in an inclined direction with respect to a direction in which the distance is measured, wherein movement of the wedge in the inclined direction varies the distance between the opposed first and second abutment surfaces to obtain a play-free joint with the first and second groove surfaces of the wedge groove.
Dependencies are inferred from the claim text.