US3779566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workpiece stop for a collet
Assignee: Hardinge Inc
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Filing: 1971-12-03
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Granted: 1973-12-18
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Expires: 1991-12-03
Abstract
Abstract A work gripping device for a machine tool spindle comprising a collet for mounting on the spindle, a stop insert member in the collet and having front and rear portions, a stop member, means for mounting the stop member in the stop insert member, the front portion of the stop insert member including work gripping means, and the front portion further including a spindle engaging abutment member extending radially beyond the collet so that the abutment member may contact the spindle when the collet is closed.
Inventors
- 👤 W Tarbox
- 👤 V Dolan
- 👤 R Harman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:04
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/208; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17529; Y10T279/34; Y10T279/3487; Y10T82/00; Y10T82/25; Y10T82/2572; Y10T82/2574; Y10T82/2579
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
92 words
A work gripping device for a machine tool spindle comprising: a. a collet for mounting on said spindle, b. a stop insert member in said collet and having front and rear portions, c. a stop member, d. means for mounting said stop member in said stop insert member, e. said front portion of said stop insert member including work gripping means, and f. said front portion further including a spindle engaging abutment member extending radially beyond said collet so that said abutment member may contact said spindle when said collet is closed.
Claim 2
Dependent Claim
92 words
A work gripping device for a machine tool spindle comprising: a. a collet for mounting on said spindle, b. a stop insert member in said collet and having front and rear portions, c. a stop member, d. means for mounting said stop member in said stop insert member, e. said front portion of said stop insert member including work gripping means, and f. said front portion further including a spindle engaging abutment member extending radially beyond said collet so that said abutment member may contact said spindle when said collet is closed.
Claim 3
Dependent Claim
24 words
A work gripping device as in claim 1 and including: a. means for preventing relative rotation of said collet and said stop insert member.
Claim 4
Dependent Claim
29 words
A work gripping device as in claim 2 and wherein: a. said preventing means includes means for aligning said collet and said stop insert member in a predetermined position.
Claim 5
Dependent Claim
19 words
A work gripping device as in claim 3 and wherein: a. said mounting means includes stop member adjusting means.
Claim 6
Dependent Claim
17 words
A work gripping device as in claim 4 and wherein: a. said mounting means includes spring means.
Claim 7
Dependent Claim
26 words
A work gripping device as in claim 5 and wherein: a. said preventing means includes cooperating key means on said collet and said stop insert member.
Claim 8
Dependent Claim
22 words
A work gripping device as in claim 6 and wherein: a. said spring means biases said stop insert member into said collet.
Claim 9
Dependent Claim
65 words
A work gripping device as in claim 1 and wherein: a. said stop insert member comprises a tubular body member having a plurality of longitudinal slots extending from one end of said tubular body member toward the other end of said tubular body member and terminating short thereof for dividing said tubular body member into a tubular section having a plurality of fingers extending therefrom.
Claim 10
Dependent Claim
41 words
A work gripping device as in claim 8 and including: a. each of said fingers having a recess adjacent each of said slots extending rearwardly parallel to the longitudinal axis of said tubular body member from the front of said fingers.
Claim 11
Dependent Claim
23 words
A work gripping device as in claim 9 and wherein: a. said mounting means comprises a coupling member threadedly engaging said tubular section.
Claim 12
Dependent Claim
21 words
A work gripping device as in claim 10 and including: a. means for positioning said stop insert member in said collet.
Claim 13
Dependent Claim
36 words
A work gripping device as in claim 11 and wherein: a. said positioning means includes a collar member threadedly engaging said collet, and b. said stop member includes a rear portion extending through said collar member.
Claim 14
Dependent Claim
57 words
A work gripping device as in claim 12 and wherein: a. said rear portion of said stop member is threaded, b. a stop nut on said threaded rear portion of said stop member, and c. spring means on said stop member between said stop nut and said collar member for biasing said stop member into said collet.
Claim 15
Dependent Claim
20 words
A work gripping device as in claim 1 and wherein: a. said spindle engaging abutment member comprises a flange member.
Claim 16
Dependent Claim
30 words
A work gripping device as in claim 14 and including: a. projection means extending from said flange member toward said spindle for abutting contact therewith when said collet is closed.
Claim 17
Dependent Claim
19 words
A work gripping device as in claim 15 and wherein: a. said projecting means includes a plurality of pins.
Claim 18
Dependent Claim
18 words
A work gripping device as in claim 15 and wherein: a. said projecting means comprises an annular rib.
Claim 19
Dependent Claim
34 words
A work gripping device as in claim 14 and including: a. a spindle, and b. projecting means extending from said spindle toward said flange member for abutting contact therewith when said collet is closed.
Claim 20
Dependent Claim
19 words
A work gripping device as in claim 18 and wherein: a. said projecting means includes a plurality of pins.
Claim 21
Dependent Claim
18 words
A work gripping device as in claim 18 and wherein: a. said projecting means comprises an annular rib.
Claim 22
Dependent Claim
22 words
A work gripping device as in claim 13 and wherein: a. said collar member includes a socket for receiving said spring means.
Claim 23
Dependent Claim
109 words
An adaptor for insertion into a collet for supporting a workpiece stop within said collet comprising: a. a cylinderical body having a longitudinal axis, b. a head portion at the outer end of said body having a front face, c. a plurality of radial slots extending parallel to said longitudinal axis for dividing said head portion into a plurality of segments each having substantially parallel inner and outer surfaces, d. said inner surface including a work gripping portion, e. a flange extending outwardly from said outer surface adjacent said front face, and f. abutment means on said flange, and thread means for supporting a stop member in said body.
Claim 24
Dependent Claim
109 words
An adaptor for insertion into a collet for supporting a workpiece stop within said collet comprising: a. a cylinderical body having a longitudinal axis, b. a head portion at the outer end of said body having a front face, c. a plurality of radial slots extending parallel to said longitudinal axis for dividing said head portion into a plurality of segments each having substantially parallel inner and outer surfaces, d. said inner surface including a work gripping portion, e. a flange extending outwardly from said outer surface adjacent said front face, and f. abutment means on said flange, and thread means for supporting a stop member in said body.
Claim 25
Dependent Claim
36 words
An adaptor as in claim 22 and wherein: a. each of said segments includes a recess adjacent each of said slots extending rearwardly parallel to said longitudinal axis from said front face of said collet head.
Claim 26
Dependent Claim
25 words
An adaptor as in claim 23 and wherein: a. said abutment means comprises means projecting rearwardly from said flange adjacent the periphery of said flange.
Claim 27
Dependent Claim
19 words
An adaptor as in claim 24 and wherein: a. said projecting means comprises a plurality of radially spaced pins.
Claim 28
Dependent Claim
16 words
An adaptor as in claim 24 and wherein: a. said projecting means comprises an annular rib.
Claim 29
Dependent Claim
18 words
An adaptor as in claim 23 and wherein: a. said flange is substantially perpendicular to said longitudinal axis.
Claim 30
Dependent Claim
16 words
An adaptor as in claim 22 and including: a. positioning means in one of said segments.
Claim 31
Dependent Claim
31 words
An adaptor as in claim 28 and wherein: a. said positioning means comprises a passageway formed in said flange, and b. key means in said passageway projecting rearwardly of said flange.
References Cited (Backward Citations)
GB540663A
Cited
US2922656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |