Parting blade and blade holder configured for conveyance of pressurized coolant
First Claim
Patent Images
1. An elongated parting blade having unitary one-piece construction and comprising:
- opposing first and second side surfaces extending between parallel first and second longitudinal mounting edges and between opposing first and second end edges which extend transverse to the longitudinal mounting edges;
each of the first and second longitudinal mounting edges comprises a tapered shape configured to facilitate longitudinal sliding motion of the parting blade, when the parting blade is retained by a blade holder;
a cutting portion which is associated with the first longitudinal mounting edge and the first end edge; and
a blade passageway configured for conveyance of coolant and extendingfrom a blade inlet aperture formed in at least one of the side surfaces, the blade inlet aperture being closer to the second longitudinal mounting edge than to the first longitudinal mounting edge and the blade inlet aperture being located between the first and second longitudinal mounting edges,to a blade outlet aperture located at the cutting portion, the blade outlet aperture being closer to the first longitudinal mounting edge than to the second longitudinal mounting edge;
wherein;
the blade outlet aperture is located in the cutting portion so as to direct coolant to pass above a rake surface and towards a forward cutting edge of a cutting insert, when a cutting insert is retained in the parting blade.
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Accused Products
Abstract
A cutting tool assembly includes a parting blade and a blade holder for holding same. The cutting tool assembly is configured for conveying pressurized coolant via the blade holder to a cutting portion of the parting blade. The blade holder includes a deceleration chamber configured for reducing impact of the pressurized coolant against the parting blade.
18 Citations
30 Claims
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1. An elongated parting blade having unitary one-piece construction and comprising:
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opposing first and second side surfaces extending between parallel first and second longitudinal mounting edges and between opposing first and second end edges which extend transverse to the longitudinal mounting edges; each of the first and second longitudinal mounting edges comprises a tapered shape configured to facilitate longitudinal sliding motion of the parting blade, when the parting blade is retained by a blade holder; a cutting portion which is associated with the first longitudinal mounting edge and the first end edge; and a blade passageway configured for conveyance of coolant and extending from a blade inlet aperture formed in at least one of the side surfaces, the blade inlet aperture being closer to the second longitudinal mounting edge than to the first longitudinal mounting edge and the blade inlet aperture being located between the first and second longitudinal mounting edges, to a blade outlet aperture located at the cutting portion, the blade outlet aperture being closer to the first longitudinal mounting edge than to the second longitudinal mounting edge; wherein; the blade outlet aperture is located in the cutting portion so as to direct coolant to pass above a rake surface and towards a forward cutting edge of a cutting insert, when a cutting insert is retained in the parting blade. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 23, 24, 25, 26, 27, 28)
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11. A blade holder comprising
a blade seat comprising a holder connection surface and upper and lower longitudinal jaws disposed on opposing sides of the holder connection surface, wherein: -
each longitudinal jaw comprises a slanted biasing surface, the upper longitudinal jaw is attached to a remainder of the blade holder via at least one mounting bore formed therein and secured with a screw, and the lower longitudinal jaw has one-piece unitary construction with said remainder, and a holder passageway configured for conveyance of coolant and comprising a coolant path extending therethrough, from at least one holder inlet aperture to at least one holder outlet aperture formed at the holder connection surface, any and all holder outlet apertures being located closer to the lower longitudinal jaw than to the upper longitudinal jaw; the holder passageway comprises a preceding portion and a deceleration chamber closer than the preceding portion to the holder outlet aperture, and a transition region at which the preceding portion transforms into the deceleration chamber; in the preceding portion at the transition region, the holder passageway has a preceding portion cross-sectional area extending perpendicular to the coolant path, in the deceleration chamber at the transition region, the holder passageway has a deceleration chamber cross-sectional area extending perpendicular to the coolant path, wherein; the deceleration chamber cross-sectional area is greater than the preceding portion cross-sectional area; and
/or the deceleration chamber comprises a barrier surface facing the coolant path of the preceding portion at the transition region;the holder connection surface is formed with a sealing element recess that surrounds the holder outlet aperture; and a sealing element is mounted in the sealing element recess. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 29, 30)
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Specification