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US 2018/0003050 A1Published application
Bit holder shank and differential interference between the shank distal portion and the bit holder block bore
AssigneeThe Sollami Company
InventorPhillip Sollami
Life of this patent
Estimating the term…
Abstract
Improved bit holder/bit holder block structure provides increased access to the rear of the assembly allowing bit holder blocks to be mounted closer to each other for micro-milling operations. Shortened bit holder shanks are reconfigured from prior art to provide increased holding power between the bit holder shank and bit holder block bore.
Claims7
A bit holder block comprising:
- a base and a bit holder receiving portion extending from a side of the base opposite a bottom of the base, and including a predetermined angle of attach with respect to the base, the bit holder receiving portion including a bit holder block bore therethrough,
- the bit holder block bore having a nominal length and diameter of about equal dimensions, and
- the side of the base opposite the bottom extends at least an inch past a rear of the bit holder receiving portion.
A bit holder comprising:
- a top body portion of increased radius comprising a bottom including an annular groove,
- a generally cylindrical shank extending axially from the annular groove, and
- a constant shape substantially annular surface adjacent a distal end of the shank comprising an angle shaped from one of a radially inward taper, a cylindrical outer surface, and a radially outward taper, wherein the constant shape substantially annular surface is adapted to provide an interference fit with a corresponding portion of a bit holder block bore comprising a bore angle differing from the annular surface angle.
A bit holder comprising:
- a top body portion of increased radius comprising a forward end that includes at least one of a planar surface, a recessed counterbore, and a concave surface, and a bottom including an annular groove,
- a generally cylindrical shank extending axially from the annular groove, and
- a constant shape substantially annular surface adjacent a distal end of the shank comprising an angle shaped from one of a radially inward taper, a cylindrical outer surface, and a radially outward taper, wherein the constant shape substantially annular surface is adapted to provide an interference fit with a corresponding portion of a bit holder block bore comprising a bore angle differing from the annular surface angle.
Dependencies are inferred from the claim text.