Clamping apparatus

A clamping apparatus (1) for clamping a workpiece (100), which is or is to be toothed and has an axis of rotation, onto a spindle, which can be rotationally driven and has a spindle axis defining an axial direction (A),

• with a clamping mechanism (20), which converts an axial force (Fa) transferred via a force transfer device (10) into a clamping force (Fs) directed radially to the spindle axis, wherein the force transfer device (10) has a first section (12) movably guided by a guide arrangement (30) in relation to a movement having an axial direction component,
• characterized in that the first section (12) is segmented into a plurality of transfer elements (12a, 12b, 12c, 12d) spaced apart from one another in a circumferential direction (U),
• wherein the force transfer device (10) has a second section (14) which extends at least partially in a direction (R) running radially with respect to the spindle axis and which is coupled to the first section (12), wherein the second section (14) is segmented corresponding to the first section (12),
• wherein the force transfer device (10) has a third section (16) coupled to the second section (14),
• wherein the second section (14) has a force reversing mechanism which reverses a tensile force or compressive force exerted on the third section (16) into a compressive force or tensile force acting on the first section (12),
• wherein the clamping mechanism (20) has a segmented clamping ring (22) which introduces the clamping force (Fs) directly into the workpiece (100).