US3594537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angularly adjustable holder for machine-tool bits
Assignee: Individual
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Filing: 1969-01-29
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Granted: 1971-07-20
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Expires: 1989-01-29
Abstract
Abstract A bit holder depending from a cross-slide or other movable support has a socket with a spherically curved seat for a tubular shaft terminating at the bottom in a chuck designed to clamp a tool bit, specifically a channeled spark-erosion electrode, in alignment with its axis passing through the center of curvature of the spherical seat. The shaft has a spherically curved bulge resting on the seat, under pressure from a spring-loaded retaining ring, and is tiltable about the aforesaid center of curvature under the control of several adjusting screws bearing from different sides upon the upper end of the shaft within the socket. The interior of the shaft above the stem of the electrode is occupied by an ejector rod forming passages for a scavenging fluid between the channeled stem and a flexible hose slidably extending from a lateral opening of the shaft through a nipple seated in a side aperture of the socket.
Inventors
- 👤 Fritz Morgenegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:32
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/0009; B23Q1/0018; B23Q1/0027; B23Q1/0036; B23H; B23H7/00; B23H7/26; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/545; Y; Y10; Y10T; Y10T279/00; Y10T279/13; Y10T408/00; Y10T408/89; Y10T408/907
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
228 words
In a machine tool having a support movable substantially at right angles to an axis, the combination therewith of a bit holder comprising a socket secured to said support and centered on said axis, said socket being internally provided with a spherically curved seat having a center of curvature on said axis; a tubular shaft with a lateral opening and with an extremity projecting from an end of said socket, said shaft having a spherically curved bulge matingly received in said seat for enabling tilting of said shaft about said center; adjusting means in said socket bearing laterally upon an end of said shaft opposite said extremity for maintaining same at a selected inclination relative to said axis; retaining means in said socket bearing upon said bulge for holding same onto said seat; and clamping means at said extremity engageable with a tool bit to be moved transversely to said axis by said support; said tool bit being an electrode with an axial channel for a working fluid; flexible conduit means terminating at said opening for establishing a path for the working fluid leading from the outside to said channel through the interior of said shaft; and an ejector rod extending axially within said shaft from said opposite end thereof to said clamping means for contact with said electrode, said rod forming a passage for said working fluid.
Claim 2
Dependent Claim
228 words
In a machine tool having a support movable substantially at right angles to an axis, the combination therewith of a bit holder comprising a socket secured to said support and centered on said axis, said socket being internally provided with a spherically curved seat having a center of curvature on said axis; a tubular shaft with a lateral opening and with an extremity projecting from an end of said socket, said shaft having a spherically curved bulge matingly received in said seat for enabling tilting of said shaft about said center; adjusting means in said socket bearing laterally upon an end of said shaft opposite said extremity for maintaining same at a selected inclination relative to said axis; retaining means in said socket bearing upon said bulge for holding same onto said seat; and clamping means at said extremity engageable with a tool bit to be moved transversely to said axis by said support; said tool bit being an electrode with an axial channel for a working fluid; flexible conduit means terminating at said opening for establishing a path for the working fluid leading from the outside to said channel through the interior of said shaft; and an ejector rod extending axially within said shaft from said opposite end thereof to said clamping means for contact with said electrode, said rod forming a passage for said working fluid.
Claim 3
Dependent Claim
42 words
The combination defined in claim 1, wherein said rod has a hollow tip forming part of said passage and opening toward said channel, further comprising a gasket fitted onto said tip to form a fluidtight connection between said passage and said channel.
Claim 4
Dependent Claim
24 words
The combination defined in claim 2 wherein said clamping means comprises a chuck with interconnected jaws forming an axially recessed neck receiving said gasket.
Claim 5
Dependent Claim
38 words
The combination defined in claim 1 wherein said socket if provided with a side aperture confronting said lateral opening and with a nipple seated in said aperture, said conduit means comprising a hose slidably received in said nipple.
Claim 6
Dependent Claim
263 words
In a machine tool having a support movable substantially at right angles to an axis, the combination therewith of a bit holder comprising a socket secured to said support and centered on said axis, said socket being internally provided with a spherically curved seat having a center of curvature on said axis; a tubular shaft with a lateral opening and with an extremity projecting from an end of said socket, said shaft having a spherically curved bulge matingly received in said seat for enabling tilting of said shaft about said center, said socket being provided with a side aperture confronting said lateral opening and with a nipple seated in said aperture; adjusting means in said socket bearing laterally upon an end of said shaft opposite said extremity for maintaining same at a selected inclination relative to said axis; and clamping means at said extremity engageable with a tool bit to be moved transversely to said axis by said support; said tool bit being an electrode with an axial channel for a working fluid; flexible conduit means terminating at said opening for establishing a path for the working fluid leading from the outside to said channel through the interior of said shaft, said conduit means comprising a hose slidably received in said nipple; and retaining means in said housing bearing upon said bulge for holding same onto said seat, said retaining means including a sleever received with a sliding fit in said socket and stop means holding said sleeve in a fixed axial position, said sleeve being provided with a slot accommodating said hose.
Claim 7
Dependent Claim
263 words
In a machine tool having a support movable substantially at right angles to an axis, the combination therewith of a bit holder comprising a socket secured to said support and centered on said axis, said socket being internally provided with a spherically curved seat having a center of curvature on said axis; a tubular shaft with a lateral opening and with an extremity projecting from an end of said socket, said shaft having a spherically curved bulge matingly received in said seat for enabling tilting of said shaft about said center, said socket being provided with a side aperture confronting said lateral opening and with a nipple seated in said aperture; adjusting means in said socket bearing laterally upon an end of said shaft opposite said extremity for maintaining same at a selected inclination relative to said axis; and clamping means at said extremity engageable with a tool bit to be moved transversely to said axis by said support; said tool bit being an electrode with an axial channel for a working fluid; flexible conduit means terminating at said opening for establishing a path for the working fluid leading from the outside to said channel through the interior of said shaft, said conduit means comprising a hose slidably received in said nipple; and retaining means in said housing bearing upon said bulge for holding same onto said seat, said retaining means including a sleever received with a sliding fit in said socket and stop means holding said sleeve in a fixed axial position, said sleeve being provided with a slot accommodating said hose.
Claim 8
Dependent Claim
40 words
The combination defined in claim 5 wherein said sleeve is formed with a second slot and said socket is provided with a detent member extending radially inwardly into said second slot for preventing rotation of said sleeve about said axis.
Claim 9
Dependent Claim
42 words
The combination defined in claim 5 wherein said retaining means further comprises a collar slidable in said socket in contact with said bulge and resilient means interposed between said sleeve and said collar for exerting pressure through the latter upon said bulge.
Claim 10
Dependent Claim
16 words
The combination defined in claim 7 wherein said resilient means comprises a stack of Belleville springs.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |