Hand machine tool with tool holder
AssigneeRobert Bosch GmbH
InventorPeter Holzer
Life of this patent
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Abstract
A hand machine tool has a rotatable spindle having a longitudinal axis and provided with a cone and an annular surface extending at an angle to the longitudinal axis, a tool holder having a conical opening which surrounds the cone, torque-transmitting elements provided between the spindle and the tool holder, and locking elements cooperating with the ring surface of the spindle, the locking elements being formed as spring wire members.
Claims11
A hand machine tool, comprising a rotatable spindle having a longitudinal axis and provided with a cone and a ring surface extending at an angle to said longitudinal axis;
- a tool holder having a conical opening which surrounds said cone;
- torque-transmitting elements provided between said spindle and said tool holder and formed as form-locking elements which connect said tool holder with said spindle for torque-transmission therebetween;
- and locking means separate from said torque-transmitting elements and cooperating with said ring surface of said spindle exclusively for locking said tool spindle, said locking means being formed as spring wire members.
A hand machine tool, comprising a rotatable spindle having a longitudinal axis and provided with a cone and a ring surface extending at an angle to said longitudinal axis;
- a tool holder having a conical opening which surrounds said cone;
- torque-transmitting elements provided between said spindle and said tool holder;
- locking means cooperating with said ring surface of said spindle, said locking means being formed as spring wire members;
- and a rotatable clamping ring which acts on said locking means.
A hand machine tool, comprising a rotatable spindle having a longitudinal axis and provided with a cone and a ring surface extending at an angle to said longitudinal axis;
- a tool holder having a conical opening which surrounds said cone;
- torque-transmitting elements provided between said spindle and said tool holder;
- locking means cooperating with said ring surface of said spindle, said locking means being formed as spring wire members;
- a form-locking structural element which connects said tool holder with said spindle for torque-transmission therebetween;
- and an adaptor having a thread for screwing a conventional drill chuck, said structural elements being mounted on said adaptor and cooperating with said spindle.
A hand machine tool, comprising a rotatable spindle having a longitudinal axis and provided with a cone and a ring surface extending at an angle to said longitudinal axis;
- a tool holder having a conical opening which surrounds said cone;
- torque-transmitting elements provided between said spindle and said tool holder;
- and locking means cooperating with said ring surface of said spindle, said locking means being formed as spring wire members, said tool holder having passages through which said locking means pass, said passages running under an angle on said ring surfaces of said spindle and leading said locking means inclinedly on said ring surface.
Dependencies are inferred from the claim text.