US3815928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-change toolholder for non-revolvable tools
Assignee: KURODA SEIK CO Ltd
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Filing: 1973-04-16
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Granted: 1974-06-11
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Expires: 1993-04-16
Abstract
Abstract A quick-change toolholder for non-revolvable tools comprise a basic holder and a cutter holder with the basic holder including an annular ring fitted into an annular recess. The annular ring has an inner opening having a center eccentrically displaced relative to the center of its outer periphery. The outer peripheral edge of the annular ring has formed thereon, at least in part, worm threads, and an adjusting shaft is provided with threads meshing with said worm threads. A rotatable means is manually operable at an outer end of the adjusting shaft, wherein said non-revolvable tools are replaceable with alternate tools by revolving the rotatable means simply without need of removing the basic holder from a tool rest at each time of replacement of the non-revolvable tools.
Inventors
- 👤 H Komori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/04; B23B29/12; B23B29/20; Y; Y10; Y10S; Y10S279/00; Y10S279/904; Y10T; Y10T279/00; Y10T279/17; Y10T403/00; Y10T403/70; Y10T403/7009; Y10T82/00; Y10T82/25; Y10T82/2585
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
108 words
A quick-change toolholder for non-revolvable tools comprising a base holder having a cavity therein, a cutter holder having a shank disposed in said cavity, means defining an annular recess in said base holder for receiving said shank, eccentric ring means disposed in said recess and having an opening through which said shank passes, and actuating means mounted in said base holder and operable to rotate said eccentric ring means so that the latter engages said shank and wedges it against said base holder to thereby lock and secure said cutter holder on said base holder and to provide for quickly changing a cutter holder on said base holder.
Claim 2
Dependent Claim
108 words
A quick-change toolholder for non-revolvable tools comprising a base holder having a cavity therein, a cutter holder having a shank disposed in said cavity, means defining an annular recess in said base holder for receiving said shank, eccentric ring means disposed in said recess and having an opening through which said shank passes, and actuating means mounted in said base holder and operable to rotate said eccentric ring means so that the latter engages said shank and wedges it against said base holder to thereby lock and secure said cutter holder on said base holder and to provide for quickly changing a cutter holder on said base holder.
Claim 3
Dependent Claim
30 words
A quick-change toolholder according to claim 1 wherein the center of said opening in said eccentric ring is displaced from the center of the outer periphery of said eccentric ring.
Claim 4
Dependent Claim
16 words
A quick-change toolholder according to claim 1 wherein said eccentric ring has a variable radial thickness.
Claim 5
Dependent Claim
47 words
A quick-change toolholder according to claim 1 wherein at least a part of the outer periphery of said eccentric ring is provided with engaging means, said actuating means comprising an adjusting shaft having thread means engaging said engaging means on said eccentric ring to rotate the latter.
Claim 6
Dependent Claim
27 words
A quick-change toolholder according to claim 4 wherein said engaging means includes teeth disposed over at least a portion of the outer periphery of said eccentric ring.
Claim 7
Dependent Claim
39 words
A quick-change toolholder according to claim 4 wherein said adjusting shaft has an operating part adapted to be engaged by external means for rotating said adjusting shaft to provide for quickly changing a cutter holder on said base holder.
Claim 8
Dependent Claim
26 words
A quick-change toolholder according to claim 4 including means in said base holder operably engaging said adjusting shaft to prevent axial displacement of said adjusting shaft.
Claim 9
Dependent Claim
36 words
A quick-change toolholder according to claim 7 wherein the last said means comprises pin elements having longitudinal axes disposed general perpendicular to the longitudinal axis of said adjusting shaft and engaging grooves in said adjusting shaft.
Claim 10
Dependent Claim
50 words
A quick-change toolholder according to claim 4 wherein said base holder is mounted on a tool rest, said cutter holder being replaceable with other cutter holders by rotating said adjusting shaft without the requirement for removing the base holder from said tool rest each time said cutter holders are replaced.
Claim 11
Dependent Claim
24 words
A quick-change toolholder according to claim 1 wherein the axial length of said eccentriC ring is greater than the axial length of said shank.
References Cited (Backward Citations)
US1361198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |