Patent US2372682A successfully refreshed from Google Patents.
US3658352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick change tool holders for automatic tool changers
Assignee: STANWICH INDUSTRIES Inc
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Filing: 1970-07-29
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Granted: 1972-04-25
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Expires: 1990-07-29
Abstract
Abstract A supporting body adapted to be mounted corotatively with a machine tool drive head or spindle has an axial bore releasably receptive of a tool adaptor shank which has an annular groove, the body having a lateral pin bore opening into the axial bore in alignment with the position occupied by the adaptor shank groove and a locking pin being reciprocably mounted in the pin bore for movement between a retracted release position and a locking position partially projecting into the axial bore and into the annular groove. The body has a longitudinally extending plunger bore intercepting the pin bore with a locking plunger reciprocably mounted in the plunger bore and means normally biasing the plunger to lock the pin in the locking position, with a relatively shiftable member carried by the body and operable in opposition to the biasing means to release the plunger from the pin to enable retraction of the pin to the release position. The shiftable member may be a cam carried rotatably on the body or it may be an axially movable trip ring. Means are associated with either the cam member or the plunger for positively ejecting the adaptor shank when the locking pin is released.
Inventors
- 👤 Roland G Koch
- 👤 John L King Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:10
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/107; B23B31/1072; B23B31/10741; B23B2260/00; B23B2260/136; Y; Y10; Y10S; Y10S279/00; Y10S279/90; Y10S279/904; Y10T; Y10T279/00; Y10T279/17; Y10T279/17863
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
213 words
A quick change tool holder, comprising: a supporting body adapted to be mounted corotatively with a machine tool drive head or spindle and having an axial bore releasably receptive of a tool adaptor shank which has a peripheral interlock recess; said body having a lateral pin bore opening at a radially inner end into said axial bore in alignment with the position occupied by the adaptor shank recess; a locking pin reciprocally mounted in said pin bore for movement between a retracted release position and a locking position partially projecting into said axial bore and into said recess; a body portion which is at least functionally integral with said body having a longitudinally extending plunger bore in intersecting relation to said pin bore so spaced from said inner end as to receive a radially outer end portion of said pin in said retracted release position; a locking plunger reciprocally mounted in said plunger bore; means normally biasing said plunger to act on said outer end and lock said pin in said locking position; and relatively shiftable means carried by said body and operable on said plunger in opposition to said biasing means to release said plunger from the locking relation to said pin to enable retraction of the pin to said release position.
Claim 2
Dependent Claim
213 words
A quick change tool holder, comprising: a supporting body adapted to be mounted corotatively with a machine tool drive head or spindle and having an axial bore releasably receptive of a tool adaptor shank which has a peripheral interlock recess; said body having a lateral pin bore opening at a radially inner end into said axial bore in alignment with the position occupied by the adaptor shank recess; a locking pin reciprocally mounted in said pin bore for movement between a retracted release position and a locking position partially projecting into said axial bore and into said recess; a body portion which is at least functionally integral with said body having a longitudinally extending plunger bore in intersecting relation to said pin bore so spaced from said inner end as to receive a radially outer end portion of said pin in said retracted release position; a locking plunger reciprocally mounted in said plunger bore; means normally biasing said plunger to act on said outer end and lock said pin in said locking position; and relatively shiftable means carried by said body and operable on said plunger in opposition to said biasing means to release said plunger from the locking relation to said pin to enable retraction of the pin to said release position.
Claim 3
Dependent Claim
43 words
A holder according to claim 1, said locking pin having a conical locking tip which is projectable into the axial bore to engage against an edge of the adaptor shank recess for imparting an axial thrust thereto inwardly relative to said axial bore.
Claim 4
Dependent Claim
47 words
A holder according to claim 1, the radially outer end portion of said pin comprising a ball end tail surface and said plunger having a tapered cam surface engageable with said tail surface for adjustably driving said pin radially inwardly under the force of said biasing means.
Claim 5
Dependent Claim
20 words
A holder according to claim 1, in which said biasing means comprise a strong load multi-cupped disk stack compression spring.
Claim 6
Dependent Claim
25 words
A holder according to claim 1, in which said shiftable releasing means comprises a rotary cam and said plunger has a follower riding said cam.
Claim 7
Dependent Claim
27 words
A holder according to claim 5, said cam comprising a ring, and a housing sleeve encompassing said body and relatively rotatably movable thereon for operating said cam.
Claim 8
Dependent Claim
80 words
A holder according to claim 5, including corotational interlock mEans on said body adjacent the outer end of said axial bore for radially extending ear lug means on the adaptor, said rotary cam comprising a ring located adjacent to said interlock means and having an ejector cam structure thereon engageable with the ear lug means for positively ejecting the adaptor after the plunger has been released from the pin by operation of said cam in the rotation of said ring.
Claim 9
Dependent Claim
40 words
A holder according to claim 1, said relatively shiftable releasing means comprising a housing sleeve relatively rotatably mounted on and about said body and carrying a plunger actuating cam, and said plunger having a follower operatively engaged by the cam.
Claim 10
Dependent Claim
44 words
A holder according to claim 8, said cam being mounted on one end portion of said rotary housing sleeve and including additional cam structure engageable with a structure connected with the tool adaptor shanks for positively ejecting the adaptor shank from said axial bore.
Claim 11
Dependent Claim
55 words
A holder according to claim 8, said cam being on one end portion of said housing sleeve, and the opposite end portion of the housing sleeve having cam means thereon cooperable with a part connected with said tool adaptor shank for positively ejecting the shank after the plunger has been moved into pin releasing relation.
Claim 12
Dependent Claim
46 words
A holder according to claim 8, including a plunger extension operable through actuation of the plunger by said cam to act upon a structure associated with the tool adaptor shank for positively ejecting the shank from said axial bore after the pin has been released therefrom.
Claim 13
Dependent Claim
38 words
A holder according to claim 1, including an extension on said plunger operable to engage a structure associated with said tool adaptor shank after the pin has been released to positively eject the shank from said axial bore.
Claim 14
Dependent Claim
31 words
A holder according to claim 1, including an adaptor ejection device, and means on said plunger acting to operate said ejector device after the plunger has been released from said pin.
Claim 15
Dependent Claim
21 words
A holder according to claim 1, in which said shiftable releasing means comprise an axially operable member connected to said plunger.
Claim 16
Dependent Claim
20 words
A holder according to claim 13, in which said axially operable member comprises a thrust ring connected to said plunger.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |