Patent US3137349A successfully refreshed from Google Patents.
US3783718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for rough-and/or finish-turning of heavy workpieces
Assignee: Hegenscheidt MFD GmbH and Co KG
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Filing: 1972-01-27
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Granted: 1974-01-08
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Expires: 1992-01-27
Abstract
Abstract A heavy-duty machine for rough- and/or finish-turning of heavy workpieces has a bed to which is bolted a headstock and which reciprocably supports a tailstock. The spindles in the headstock and tailstock are rotatable in hydrostatic bearings and the tailstock is provided with hydrostatic ways which are parallel to the common axis of the spindles. The main transmission of the turning machine has a discrete casing mounted behind the headstock and supporting the main motor which rotates the spindle of the headstock by way of the transmission and a coupling for transmitting torsion only which connects the output element of the transmission with the headstock spindle. The output shaft of the main motor is located in a vertical plane which includes the common axis of the two spindles. The outer dimensions of the housing of the headstock match the outer dimensions of the housing of the tailstock. The headstock, the tailstock, the transmission, the main motor and the coupling have halves which are mirror symmetrical with reference to the aforementioned plane.
Inventors
- 👤 W Kuhne
- 👤 H Goletz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:54
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/0003; B23B; B23B5/00; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/18; Y10T82/25; Y10T82/2552
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
112 words
In a machine tool, particularly in a programmed heavy-duty machine for rough and/or finish-turning of heavy workpieces, a combination comprising a frame including a bed; a headstock and a tailstock mounted on said bed; a horizontal spindle rotatably mounted in said headstock; a discrete transmission mounted on said bed axially spaced from said headstock and having rotary input and output elements; coupling means for transmission of torsion only connecting said output element with said spindle; and prime mover means for rotating said input element; said headstock, said tailstock, said transmission and said coupling means Having halves which are mirror symmetrical with reference to a vertical plane including the axis of said spindle.
Claim 2
Dependent Claim
112 words
In a machine tool, particularly in a programmed heavy-duty machine for rough and/or finish-turning of heavy workpieces, a combination comprising a frame including a bed; a headstock and a tailstock mounted on said bed; a horizontal spindle rotatably mounted in said headstock; a discrete transmission mounted on said bed axially spaced from said headstock and having rotary input and output elements; coupling means for transmission of torsion only connecting said output element with said spindle; and prime mover means for rotating said input element; said headstock, said tailstock, said transmission and said coupling means Having halves which are mirror symmetrical with reference to a vertical plane including the axis of said spindle.
Claim 3
Dependent Claim
42 words
A combination as defined in claim 1, wherein said transmission comprises a casing secured to said bed and said prime mover means comprises a single motor mounted on said casing and including an output shaft having an axis located in said plane.
Claim 4
Dependent Claim
27 words
A combination as defined in claim 1, wherein said headstock comprises a first housing and said tailstock comprises a second housing, said housings having identical external dimensions.
Claim 5
Dependent Claim
54 words
A combination as defined in claim 1, wherein said headstock comprises a first housing and hydrostatic bearing means provided in said first housing for said spindle, said tailstock comprising a second housing, a second spindle coaxial with said first mentioned spindle, and hydrostatic bearing means provided in said second housing for said second spindle.
Claim 6
Dependent Claim
59 words
A combination as defined in claim 1, further comprising tool slide means mounted on said bed between said headstock and said tailstock, said slide means comprising a lower carriage reciprocably mounted on said bed for movement in parallelism with said axis and a second carriage reciprocably mounted on said first carriage for movement at right angles to said axis.
Claim 7
Dependent Claim
73 words
A combination as defined in claim 5, further comprising first and second detector means respectively mounted on said first and second carriages for respectively scanning the position of a tool on one of said carriages in parallelism with and at right angles to said axis, and first and second bars for slidably guiding said first and second detector means, said first and second bars being respectively parallel with and normal to said axis.
Claim 8
Dependent Claim
41 words
A combination as defined in claim 1, wherein said tailstock is reciprocable along said bed toward and away from said headstock and comprises hydrostatic guide means cooperating with said bed to guide said tailstock for movement in parallelism with said axis.
Claim 9
Dependent Claim
26 words
A combination as defined in claim 1, wherein said transmission comprises a gear train for transmitting torque from said input element to said output element thereof.
Claim 10
Dependent Claim
23 words
A combination as defined in claim 2, further comprising a second transmission for transmitting torque from said output shaft to said input element.
Claim 11
Dependent Claim
30 words
A combination as defined in claim 1, wherein said headstock is located between said transmission and said tailstock and said prime mover means is mounted on top of said transmission.
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |