Resilient clamping mechanism for inserts
AssigneeIscar, Ltd.
InventorGideon Barazani
Life of this patent
Estimating the term…
Abstract
A cutting insert clamping mechanism for use in a cutting tool. The cutting tool has a body portion and a clamping portion. The clamping portion includes a base jaw and a clamping jaw. The clamping jaw has on its lower side a forward clamping surface separated by a recess from a rearward clamping surface. A first narrow bridge section connects the clamping jaw to the body portion of the cutting tool. A second narrow bridge section extends generally towards the rearward clamping surface. As a result of the two narrow bridge sections, the forward and rearward clamping surfaces can resiliently bend independently, and thereby are capable of applying independent clamping forces to the insert.
Claims39
For use in a cutting tool, the cutting tool comprising a body portion and a clamping portion, a cutting insert clamping mechanism comprising:
- a base jaw;
- a clamping jaw having an upper side and a lower side, the lower side opposing the base jaw and comprising a forward clamping surface spaced apart from a rearward clamping surface, the base jaw and the clamping jaw having a gap between them forming an insert receiving pocket having an insert pocket opening at a leading end thereof;
- a first aperture extending from a rear section of the insert receiving pocket in a direction generally towards the upper side of the clamping jaw;
- a first narrow bridge section connecting the clamping jaw to the body portion of the cutting tool;
- a second narrow bridge section extending generally towards the rearward clamping surface;
- wherein a first resilience axis of rotation is associated with the first narrow bridge section and a second resilience axis of rotation is associated with the second narrow bridge section.
A cutting tool comprising a body portion and a clamping portion having a clamping mechanism comprising:
- a base jaw;
- a clamping jaw having an upper side and a lower side, the lower side opposing the base jaw and comprising a forward clamping surface spaced apart from a rearward clamping surface, the base jaw and the clamping jaw having a gap between them forming an insert receiving pocket having an insert pocket opening at a leading end thereof;
- a first aperture extending from a rear section of the insert receiving pocket in a direction generally towards the upper side of the clamping jaw;
- a first bridge section connecting the clamping jaw to the body portion of the cutting tool;
- a second bridge section extending generally towards the rearward clamping surface;
- wherein a first resilience axis of rotation is associated with the first bridge section and a second resilience axis of rotation is associated with the second bridge section.
A cutting tool comprising having associated therewith a cutting insert clamping mechanism comprising:
- a clamping jaw and a base jaw defining therebetween an insert receiving pocket having an insert pocket opening at a leading end thereof, the clamping jaw having an upper side and a lower side, the lower side opposing the base jaw and being provided with a forward clamping surface proximate to the leading end and a rearward clamping surface spaced apart from the forward clamping surface in a rearward direction of the insert receiving pocket, away from the leading end;
- and
- a first aperture communicating with said insert receiving pocket at a point which is rearward of the rearward clamping surface;
- wherein
- the first aperture extends past the rearward clamping surface, in a forward direction of the insert receiving pocket towards the leading end.
A cutting tool comprising having associated therewith a cutting insert clamping mechanism comprising:
- a clamping jaw and a base jaw defining therebetween an insert receiving pocket having an insert pocket opening at a leading end thereof, the clamping jaw having an upper side and a lower side, the lower side opposing the base jaw and being provided with a forward clamping surface proximate to the leading end and a rearward clamping surface spaced apart from the forward clamping surface in a rearward direction of the insert receiving pocket, away from the leading end;
- and
- a first aperture communicating with said insert receiving pocket at a point which is rearward of the rearward clamping surface;
- wherein
- a first bridge section connects the clamping jaw to a body portion of the cutting tool, the first bridge section being defined between the upper side of the clamping jaw and the first aperture;
- a second bridge section extends generally towards the rearward clamping surface, the second bridge section being defined between the lower side of the clamping jaw and the first aperture;
- and
- a first resilience axis of rotation is associated with the first bridge section and a second resilience axis of rotation is associated with the second bridge section.
A cutting tool comprising having associated therewith a cutting insert clamping mechanism comprising:
- a clamping jaw and a base jaw defining therebetween an insert receiving pocket having an insert pocket opening at a leading end thereof, the clamping jaw having an upper side and a lower side, the lower side opposing the base jaw and being provided with a forward clamping surface proximate to the leading end and a rearward clamping surface spaced apart from the forward clamping surface in a rearward direction of the insert receiving pocket, away from the leading end;
- a first aperture communicating with said insert receiving pocket at a point which is rearward of the rearward clamping surface;
- and
- a cutting insert retained in the insert receiving pocket, the cutting insert having a upper abutting surface and a lower abutting surface, the upper abutting surface comprising a forward abutting surface spaced apart from a rearward abutting surface, wherein
- the forward clamping surface abuts the forward abutting surface at a forward clamping region, and the rearward clamping surface abuts the rearward abutting surface at a rearward clamping region;
- a first clamping force is associated with the forward clamping region, and a second clamping force is associated with the rearward clamping region;
- and
- the first and second clamping forces are independent of one another.
Dependencies are inferred from the claim text.