US3757638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Five-axis shaper
Assignee: Individual
•
Filing: 1972-04-12
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Granted: 1973-09-11
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Expires: 1992-04-12
Abstract
Abstract A heavy-duty combination vertical and horizontal metal-cutting shaper constituted of a machine bed provided at its back with a massive upright column having two vertical ways traversed by a saddle. The machine bed has ways on which a second saddle travels, the latter in turn mounting a carriage which supports a turnable table. On the saddle supported by the column there is a swivel head that carries an elongate housing, in which reciprocate a heavy counterweight-type slider and a ram, respectively movable in adjoining parallel paths. The ram, which carries the tool bit, is coupled to the slider by a drive mechanism comprising racks and gears. The slider is driven through a Scotch yoke and set of elliptical gears whereby it has a slow movement in one direction and a rapid movement in the opposite direction. Between the gears and Scotch yoke a shaft extends, disposed on the axis of the swivel head whereby the latter can be adjustably turned without affecting the drive mechanism of the slider and ram. The machine thus has two axes associated with the column, and three axes associated with the bed, making a total of five altogether. The slider, comprising in effect a counterweight, eliminates excessive vibrations at the working speeds.
Inventors
- 👤 J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:51
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/001; B23Q11/0017; B23D; B23D7/00; B23D7/10; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6779; Y10T408/91; Y10T408/92; Y10T409/00; Y10T409/50; Y10T409/504756; Y10T409/506232; Y10T409/507708; Y10T409/508036; Y10T74/00; Y10T74/17; Y10T74/177
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
144 words
A machine tool for performing cutting or shaping operations on a workpiece, comprising in combination: a. a column having upstanding ways, b. a saddle carried by the column and movable along the ways thereof, c. a swivel head on the saddle, said head being turnably adjustable thereon, d. a slider reciprocatable on the swivel head, e. powered drive means connected to the slider for reciprocating the latter, f. a ram having means for mounting a tool bit, said ram being reciprocatable on the swivel head in a path spaced from and parallel to the path of movement of the slider, and g. a drive mechanism interconnecting the slider and ram for effecting movement of the latter in directions opposite to those of the slider, h. said slider having a significant and appreciable mass whereby it constitutes a dynamic counterweight with respect to the ram.
Claim 2
Dependent Claim
144 words
A machine tool for performing cutting or shaping operations on a workpiece, comprising in combination: a. a column having upstanding ways, b. a saddle carried by the column and movable along the ways thereof, c. a swivel head on the saddle, said head being turnably adjustable thereon, d. a slider reciprocatable on the swivel head, e. powered drive means connected to the slider for reciprocating the latter, f. a ram having means for mounting a tool bit, said ram being reciprocatable on the swivel head in a path spaced from and parallel to the path of movement of the slider, and g. a drive mechanism interconnecting the slider and ram for effecting movement of the latter in directions opposite to those of the slider, h. said slider having a significant and appreciable mass whereby it constitutes a dynamic counterweight with respect to the ram.
Claim 3
Dependent Claim
56 words
A machine tool as in claim 1, wherein: a. said powered drive means comprises a pair of meshed elliptical gears for effecting a slow movement of the slider in one direction, accompanied by advance of the ram, and for effecting a fast movement of the slider in the opposite direction, accompanied by retraction of the ram.
Claim 4
Dependent Claim
30 words
A machine tool as in claim 1, wherein: a. said powered drive means comprises a Scotch yoke connected to said slider and a yoke arm engaged with said Scotch yoke.
Claim 5
Dependent Claim
24 words
A machine tool as in claim 3 and further including: a. means for effecting an adjustment of the effective length of said yoke arm.
Claim 6
Dependent Claim
88 words
A machine tool as in claim 1, wherein: a. said powered drive means comprises a pair of meshed elliptical gears for effecting a slow movement of the slider in one direction, accompanied by advance of the ram, and for effecting a fast movement of the slider in the opposite direction, accompabied by retraction of the ram, b. said drive means further including a Scotch yoke connected to the slider, and a yoke arm engaged with said Scotch yoke, c. said yoke arm being driven from said elliptical gears.
Claim 7
Dependent Claim
31 words
A machine tool as in claim 5 and further including: a. a shaft on which the yoke arm is carried, b. said swivel head having the same axis as said shaft.
Claim 8
Dependent Claim
24 words
A machine tool as in claim 3, wherein: a. the swivel head has an axis which coincides with the axis of said yoke arm.
Claim 9
Dependent Claim
29 words
A machine tool as in claim 2 and further including: a. a ram housing enclosing said slider and drive mechanism, b. said elliptical gears being contained in said column.
Claim 10
Dependent Claim
43 words
A machine tool as in claim 1 and further including: a. a ram housing in which the slider and drive mehcanism are disposed, b. said Scotch yoke being carried by the bottom end of the slider and being disposed in said ram housing.
Claim 11
Dependent Claim
31 words
A machine tool as in claim 1, wherein: a. said drive mechanism comprises a pair of racks disposed respectively on the slider and ram, and comprises gearing engaged with said racks.
Claim 12
Dependent Claim
48 words
A machine tool as in claim 10, whereIn; a. the said gearing comprises a pair of gears of different diameters, b. the gear of smaller diameter being engaged with the rack carried by the slider, thereby to effect a step-up gear ratio from the slider to the ram.
Claim 13
Dependent Claim
79 words
A machine tool as in claim 1, wherein: a. said drive mechanism comprises a pair of racks disposed respectively on the slider and ram, and comprises gearing engaged with said racks, b. said powered drive means comprising a pair of meshed elliptical gears for effecting a slow movement of the slider in one direction, accompanied by advance of the ram, and for effecting a fast movement of the slider in the opposite direction, accompanied by retraction of the ram.
Claim 14
Dependent Claim
53 words
A machine tool as in claim 4, wherein: a. said yoke arm has an elongate groove, b. said adjustment means comprising a block slidably along said groove and having a roller engaged with the Scotch yoke, and comprising screw means for adjustably positioning the block on the yoke arm along the groove thereof.
Claim 15
Dependent Claim
33 words
A machine tool as in claim 13, wherein: a. the yoke arm is disposed within the swivel head, b. said head having an access opening through which the screw means can be reached.
Claim 16
Dependent Claim
34 words
A machine tool as in claim 11 and further including: a. an additional rack on the slider, and b. an additional gear rigid with said pair of gears and engaged with said additional rack.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |