US3581616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for high speed cutting of shaped steel
Assignee: Nippon Steel Corp
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Filing: 1968-09-16
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Granted: 1971-06-01
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Expires: 1988-09-16
Abstract
Abstract An apparatus for high speed cutting of light gauge steel, comprising a cutter consisting of a mechanism for the vertical movement of a press bed by means of a single or plural sets of eccentric cams or the like and of a mechanism for the reciprocal sliding, in connection with said vertical movement, of a slide base carrying thereon a dieset enclosing a blade for cutting. Means are provided for measuring the speed of the to-be-cut material and the dislocated position of the dieset at the time of cutting. These values are then fed to a means for adjusting the driving speed of the cutter, thereby ensuring that each cutting operation is carried out at the correct position.
Inventors
- 👤 Nobuzi Kawae
- 👤 Kenzi Terai
- 👤 Shoichi Tani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:00
CPC Classifications
B; B23; B23D; B23D25/00; B23D25/02; B23D25/04; B26; B26D; B26D1/00; B26D1/56; B26D1/60; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4737; Y10T83/4757; Y10T83/4763
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
An apparatus for the high speed cutting of moving shaped steel material comprising a frame; a slide base mounted for reciprocal movement over said frame; a dieset mounted to be reciprocated with said slide base; means for reciprocating said slide base and said dieset along said frame at a speed slightly slower than the seed of said material; means solidly attached to said dieset and adapted to be abutted by the end of said material for stopping the movement of said material with respect to said dieset; means solidly attached to said slide base for allowing said dieset to move with respect to said slide base; a press head mounted above said dieset; and cam means for causing said press head to press against said dieset and thereby cut said material after said end of said material abuts said means for stopping.
Claim 2
Independent Claim
142 words
An apparatus for the high speed cutting of moving shaped steel material comprising a frame; a slide base mounted for reciprocal movement over said frame; a dieset mounted to be reciprocated with said slide base; means for reciprocating said slide base and said dieset along said frame at a speed slightly slower than the seed of said material; means solidly attached to said dieset and adapted to be abutted by the end of said material for stopping the movement of said material with respect to said dieset; means solidly attached to said slide base for allowing said dieset to move with respect to said slide base; a press head mounted above said dieset; and cam means for causing said press head to press against said dieset and thereby cut said material after said end of said material abuts said means for stopping.
Claim 3
Dependent Claim
48 words
An apparatus as claimed in claim 1, wherein said means for reciprocating comprises an arm pivoted at one end to said slide base and pivoted at the other end to a stationary pivot, and an eccentric shaft attached to said arm to impart pendulous motion to said arm.
Claim 4
Dependent Claim
42 words
An apparatus as claimed in claim 1, wherein said means for allowing said dieset to move comprises an air Cylinder solidly mounted on said slide base and having a rod solidly attached to said dieset, said rod being slidable within said cylinder.
Claim 5
Dependent Claim
68 words
An apparatus as claimed in claim 1, further comprising a motor mounted for driving said reciprocating means and said cam means; a dieset position detecting means for issuing pulses representative of the position of said dieset; a computer adapted to receive said pulses and compare them with pulses representing prescribed values; and speed change means operable in response to said computer to alter the speed of said motor.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |