US3921479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed mechanism for an end-bevel machine
Assignee: TUBECO Inc
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Filing: 1974-02-22
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Granted: 1975-11-25
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Expires: 1994-02-22
Abstract
Abstract The invention contemplates two-component feed mechanism for a machine tool, whereby a single adjustment is operative to determine the relative rate of feed for the respective feed components. For machines in which the two component motions are effectively rectilinear, the single adjustment thus determines the slope of the resultant of the two feeds. In the form herein specifically disclosed, feed advances are by stepped increments, in alternating succession for the respective feed components, and the single adjustment determines the selected fractional division of a given time cycle to be shared for successive increments of the respective component-feed displacements.
Inventors
- 👤 Lyber Katz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:37
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/36; B23B5/38; B23Q; B23Q15/00; B23Q15/007; B23Q15/013; B23Q5/00; B23Q5/22; B23Q5/26; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305936; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/143; Y10T82/147; Y10T82/25; Y10T82/2531; Y10T82/2533; Y10T82/2535
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
118 words
In a machine of the character indicated, work-holding means, tool-holding means, and two-component feed means for twocomponent relative movement of said holding means, each feed component of said feed means comprising its own independent motion-displacement mechanism, cycle-dividing control means having means for the selected division of the cycle thereof into a first timed fraction having a selected relation to the remaining timed fraction of the cycle, and independent control connections from said control means to each of the respective component motion-displacement mechanisms such that the timed control of said mechanisms is in accordance with the selected fractional sharing of the cycle of said control means, whereby the resultant displacement is a function of the selection of cycle division.
Claim 2
Dependent Claim
118 words
In a machine of the character indicated, work-holding means, tool-holding means, and two-component feed means for twocomponent relative movement of said holding means, each feed component of said feed means comprising its own independent motion-displacement mechanism, cycle-dividing control means having means for the selected division of the cycle thereof into a first timed fraction having a selected relation to the remaining timed fraction of the cycle, and independent control connections from said control means to each of the respective component motion-displacement mechanisms such that the timed control of said mechanisms is in accordance with the selected fractional sharing of the cycle of said control means, whereby the resultant displacement is a function of the selection of cycle division.
Claim 3
Dependent Claim
33 words
The machine of claim 1, wherein each feed-component motion-displacement mechanism comprises pressure-responsive actuating means and wherein a single source of pressure fluid is connected via said control means to said respective actuating means.
Claim 4
Dependent Claim
13 words
The machine of claim 2, wherein each of said actuating means is double-acting.
Claim 5
Dependent Claim
24 words
The machine of claim 3, wherein each of the connections from said control means to said respective actuating means includes selectively operable flow-reversing means.
Claim 6
Dependent Claim
31 words
The machine of claim 2, in which a single selectively variable throttling means is in the circuit of said source, serving in common the controlled flows to said respective actuating means.
Claim 7
Dependent Claim
66 words
The machine of claim 5, in which a by-pass line is connected from one of said actuating means in shunt across said control means and said throttling means, said by-pass line having lesser flow-restriction properties than said throttling means, and selectively operable valve means for determining the open/closed condition of said by-pass line, whereby a rapid traverse of one of said motion components is selectively available.
Claim 8
Dependent Claim
50 words
The machine of claim 6, in which a second such by-pass line with selectively operable valve means is connected from the other of said actuating means in shunt across said control means and said throttling means, whereby a rapid traverse of the other of said motion components is selectively available.
Claim 9
Dependent Claim
59 words
The machine of claim 5, in which a further single selectively variable throttling means is connected from one of saiD actuating means in shunt across said control means and said first mentioned throttling means, whereby fine adjustment is available for the relative flows to the respective actuating means during such flow intervals as are determined by said control means.
Claim 10
Dependent Claim
45 words
The machine of claim 1, in which said control means includes means for the selective connection of said control means to one to the exclusion of the other of said component displacement mechanisms without regard for the instantaneously selected cycle-fraction timing of said control means.
References Cited (Backward Citations)
US2713246A
Cited
US2972868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |