US3612552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick change tool holder
Assignee: Individual
•
Filing: 1969-08-13
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Granted: 1971-10-12
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Expires: 1989-08-13
Abstract
Abstract A quick change tool holder is arranged for tool change without stopping the tool spindle. The holder receives an arbor, the latter being engaged by segmental members in the holder body which are moved radially apart by wedges operated by a sliding sleeve on the outside of the holder. The segments are held in a released position after removal of the arbor by means of pawls engaging catch pins on the segments. Nose parts of the pawls engage a grooved ring spring mounted in the holder body and displaced on insertion of the arbor so that the segments are released. Limb portions of the segments then engage mating surfaces on the arbor which initiate acceleration of the arbor to the spindle speed after which the limbs enter slots in the arbor to give a positive drive.
Inventors
- 👤 Paul Brundler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:49
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/06; B23B31/10; B23B31/107; B23B31/1072; Y; Y10; Y10S; Y10S279/00; Y10S279/904; Y10T; Y10T279/00; Y10T279/17; Y10T279/17863; Y10T279/17871
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
218 words
Quick change tool holder, comprising a holder body, an interchangeable tool arbor, a sleeve displaceable on the holder body against the action of a spring, oppositely disposed wedge means operatively coupled to the sleeve, ring segments radially displaceable within the holder body, gaps between the segments being operatively engaged with the wedge means for radial displacement of the ring segments on displacement of the sleeve, spring means tending to move the ring segments towards one another, projecting limbs on the ring segments operatively engageable with slots formed between upwardly projecting elements on the arbor to provide a positive drive between the arbor and the holder after the arbor has been inserted, a grooved ring axially supported within the holder body, spring means operating on said ring to press it into engagement with the arbor when inserted in the body, catch pawls pivotally supported in the holder body and having projecting parts engageable with the grooved ring, catch pins on the ring segments engageable with said pawls to hold the ring segments in a disengaged position when the arbor is absent and to release the ring segments on insertion of the arbor, and inclined cam surfaces on the limbs adapted to engage a mating suRface of the arbor to initiate the drive of the arbor by the holder body.
Claim 2
Dependent Claim
218 words
Quick change tool holder, comprising a holder body, an interchangeable tool arbor, a sleeve displaceable on the holder body against the action of a spring, oppositely disposed wedge means operatively coupled to the sleeve, ring segments radially displaceable within the holder body, gaps between the segments being operatively engaged with the wedge means for radial displacement of the ring segments on displacement of the sleeve, spring means tending to move the ring segments towards one another, projecting limbs on the ring segments operatively engageable with slots formed between upwardly projecting elements on the arbor to provide a positive drive between the arbor and the holder after the arbor has been inserted, a grooved ring axially supported within the holder body, spring means operating on said ring to press it into engagement with the arbor when inserted in the body, catch pawls pivotally supported in the holder body and having projecting parts engageable with the grooved ring, catch pins on the ring segments engageable with said pawls to hold the ring segments in a disengaged position when the arbor is absent and to release the ring segments on insertion of the arbor, and inclined cam surfaces on the limbs adapted to engage a mating suRface of the arbor to initiate the drive of the arbor by the holder body.
Claim 3
Dependent Claim
44 words
A tool holder according to claim 1, wherein the arbor and the holder are provided with mating coned surfaces which are brought into driving engagement by cooperation of the inclined cam surfaces of the limbs with a correspondingly inclined surface associated with the arbor.
Claim 4
Dependent Claim
113 words
Quick change tool holder adapted to receive an interchangeable tool or tool arbor comprising a holder body provided with a conical bore for receiving the arbor which is provided with a mating coned part, an outer sleeve displaceable in the axial direction of the holder, tapered spreader means cooperating with the sleeve for radial displacement of spring-loaded retaining members, catch means to retain the retaining members in their spread apart position and a release member cooperating with catch members to release them on inserting the arbor, said retaining members being arranged as part-ring segments which are drawn together in the radial direction by springs, said spreader means extending between gaps of ring segments.
Claim 5
Dependent Claim
113 words
Quick change tool holder adapted to receive an interchangeable tool or tool arbor comprising a holder body provided with a conical bore for receiving the arbor which is provided with a mating coned part, an outer sleeve displaceable in the axial direction of the holder, tapered spreader means cooperating with the sleeve for radial displacement of spring-loaded retaining members, catch means to retain the retaining members in their spread apart position and a release member cooperating with catch members to release them on inserting the arbor, said retaining members being arranged as part-ring segments which are drawn together in the radial direction by springs, said spreader means extending between gaps of ring segments.
Claim 6
Dependent Claim
41 words
Quick change tool holder according to claim 3, said retaining members embodying limbs which engage slots in the head of the arbor, said limbs being provided with inclined engagement faces for driving the arbor and accelerating it to the spindle speed.
Claim 7
Dependent Claim
50 words
Quick change tool holder according to claim 3, characterized in that the catch means comprise pawl which are supported in the holder body about a pivot axis lying transversely to the rotary axis of the holder and which are adapted to engage with retaining members or to be disengaged therefrom.
Claim 8
Dependent Claim
29 words
A quick change tool holder according to claim 3, wherein said retaining members embody inclined surfaces to cooperate with an inclined surface provided in the head of the arbor.
Claim 9
Dependent Claim
44 words
Quick change tool holder according to claim 3, and a tool arbor, said arbor embodying at least two upwardly open slots and a threaded plug is inserted in a central bore of the arbor which plug embodies an inclined surface projecting over the slots.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |