Patent ID: 11926020
Assignee: FRANZ HAIMER MASCHINENBAU KG
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 11:
12. A clamping apparatus for clamping-in an object, the clamping apparatus comprising:
first and second clamping elements defining a spacing therebetween;
a spindle body and a nut element to be screwed together by screwing actuation of at least one of said spindle body or said nut element to decrease said spacing for clamping-in an object disposed between said clamping elements;
said nut element having a receiving body and a plurality of roller bodies with a defined roller engagement structure, said roller bodies being axially rotatably secured on said receiving body and distributed on said nut element in a circumferential direction;
a plurality of engagement regions at least one of distributed or spaced apart from one another on said spindle body, each of said engagement regions having one respective spindle body engagement structure, said spindle body engagement structures of said spindle body being engaged by or configured to be engaged by said roller engagement structures of said roller bodies;
said nut element configured to be screwed to said spindle body by engagement of said engagement structures of said spindle body and of said roller bodies with one another;
each roller body having bearing journals protruding on an end side and axially rotatably securing a respective roller body on said receiving body of said nut element, and each roller body being axially rotatably mounted by said bearing journals in an annular or circularly annular bearing cage of said nut element;
said nut element having a plurality of said bearing cages being spaced apart from one another in an axial direction, and a plurality of roller bodies ape being axially rotatably mounted in each respective bearing cage.