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US RE43,718 E1Granted
Clamping device for a cutting insert
AssigneeIscar, Ltd.
InventorJacob Friedman
Life of this patent
Estimating the term…
Abstract
A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, a pair of spaced apart projecting prongs of the key with adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.
Claims15
A cutting tool assembly comprising:
- a) a rigid holder blade, said rigid holder blade comprising:
- a body portion,
- a base jaw integrally formed with said body portion,
- a clamping jaw having a leading portion, said clamping jaw being integrally formed with said body portion and being resiliently and pivotally displaceable relative to said base jaw,
- an insert receiving slot having a leading portion and a trailing portion, said slot being defined between said clamping jaw and said base jaw and being adapted to receive an exchangeable cutting insert,
- a displacement surface formed in said clamping jaw, said displacement surface being spaced apart from said insert receiving slot and located substantially on said clamping jaw leading portion, and
- a supporting surface provided on said body portion, said supporting surface being spaced apart from said displacement surface,
- the arrangement being such that a displacing force applied between the supporting and displacement surfaces to move said surfaces relative to each other results in a outwardly directed resilient pivotal displacement of said clamping jaw relative to said base jaw;
- b) an insert receiving slot opening key having a pair of spaced apart prongs, a first prong of said key adapted to engage said supporting surface and a second prong of said key adapted to engage said displacement surface for applying said displacing force;
- and
- c) means to force apart said first and second prongs, said means including a wedge-like spacer.
8 more elements
A cutting tool assembly comprising:
- a) a rigid holder blade, said rigid holder blade comprising:
- a body portion,
- a base jaw integrally formed with said body portion,
- a clamping jaw having a leading portion, said clamping jaw being integrally formed with said body portion and being resiliently and pivotally displaceable relative to said base jaw,
- an insert receiving slot having a leading portion and a trailing portion, said slot being defined between said clamping jaw and said base jaw and being adapted to receive an exchangeable cutting insert,
- a displacement surface formed in said clamping jaw, said displacement surface being spaced apart from said insert receiving slot and located substantially on said clamping jaw leading portion, and
- a supporting surface provided on said body portion, said supporting surface being spaced apart from said displacement surface,
- the arrangement being such that a displacing force applied between the supporting and displacement surfaces to move said surfaces relative to each other results in a outwardly directed resilient pivotal displacement of said clamping jaw relative to said base jaw;
- b) an insert receiving slot opening key having a pair of spaced apart prongs, a first prong of said key adapted to engage said supporting surface and a second prong of said key adapted to engage said displacement surface for applying said displacing force;
- and
- c) means to force apart said first and second prongs, said means including a fixed prong and an eccentrically rotatable prong.
8 more elements
A substantially rigid holder blade for use in a cutting tool assembly comprising:
- a) a body portion;
- b) a base jaw integrally formed with said body portion;
- c) a clamping jaw integrally formed with said body portion;
- d) said jaws being located opposite one another and defining therebetween a cutting insert retaining slot within which a cutting insert can be spring clamped;
- e) slot leading and trailing portions;
- f) clamping jaw leading and trailing portions respectively and substantially adjacent said slot leading and trailing portions;
- g) said clamping jaw being resiliently and pivotally displaceable about its trailing portion;
- h) a displacement surface formed substantially on said clamping jaw leading portion and spaced apart from said retaining slot;
- and
- i) a supporting surface formed on said holder blade spaced apart from said displacement surface;
- j) the arrangement being such that a displacing force applied between said supporting and displacement surfaces to move said surfaces relative to each other results in outwardly directed resilient pivotal displacement of said clamping jaw with respect to said base jaw for insertion into and withdrawal from said slot of said cutting insert.
8 more elements
Dependencies are inferred from the claim text.