GB1240283A - Method and apparatus for high speed cutting of profiled steel sections - Google Patents
Method and apparatus for high speed cutting of profiled steel sectionsInfo
- Publication number
- GB1240283A GB1240283A GB4459268A GB4459268A GB1240283A GB 1240283 A GB1240283 A GB 1240283A GB 4459268 A GB4459268 A GB 4459268A GB 4459268 A GB4459268 A GB 4459268A GB 1240283 A GB1240283 A GB 1240283A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slide
- stock
- die set
- speed
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D25/00—Machines or arrangements for shearing stock while the latter is travelling otherwise than in the direction of the cut
- B23D25/02—Flying shearing machines
- B23D25/04—Flying shearing machines in which a cutting unit moves bodily with the work while cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
- B26D1/60—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is mounted on a movable carriage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4737—With tool speed regulator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4757—Tool carrier shuttles rectilinearly parallel to direction of work feed
- Y10T83/4763—Both members of cutting pair on same carrier
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Forging (AREA)
- Shearing Machines (AREA)
Abstract
1,240,283. Flying shear. NIPPON STEEL CORP. 19 Sept., 1968 [23 Sept., 1967 (2)], No. 44592/68. Heading B3W. A flying shear for cutting profiled steel sections comprises a vertically-reciprocable, eccentrically-driven press head 18 which cooperates with a die set 19 mounted on a slide 23 reciprocable along the feed path P of the stock by an arm 24 pivotable between the positions arrowed. The die set 19 is slidable relative to the slide and is connected at one end to a gauging stop 21 and at the other to the piston-rods of air cylinders 22. A swell period is provided between the impact of the stock against the stop and the initiation of cutting, the moment of said initiation being corrected in accordance with variation in the speed at which the stock is fed and/or the location of the die set. In use, stock is fed along path P through slot (39) in the die set (Fig. 3, not shown) and the slide 23 is simultaneously advanced in the same direction by the arm 24. The feed of the stock and the speed of travel of the slide are so arranged that the leading end of the stock contacts the gauging stop when the slide has reached the position in which it is shown in Fig. 2 when the speed of the gauging stop is the same as or only slightly slower than that of the stock to prevent damage to the leading end on impact. The slide is driven by a pin 25 eccentrically mounted on a drive shaft 8, Fig. 1, and slidable along a slot 26 in the arm 24, the arm being pivotable about a fixed shaft 27 and connected to the slide by means of a pin 28. The speed of the slide is varied by adjusting the eccentricity e of the pin 25 by means of a screw 30. The slidable mounting of the die set on the slide 23 allows the die set to move relative to the slide when the stock hits the gauging stop 21 at which point acceleration of the slide 23 ceases. With the die set and the stock travelling at the same speed and a dwell period having elapsed since the stock hit the stop, the press head descends and actuates the apertured cutters of the die set to cut the stock. The gauging stop is raised to allow the cut length to be disengaged from the die set, the air cylinders 22 are actuated to retract the die set to the Fig. 2 position relative to the slide and the arm 24 returns the slide to the righthand limit of its travel as seen in Fig. 2. The press head 18 and arm 24 are driven by a motor 1 through a stepless speed changer 2. To ensure that the stock has reached the gauging stop before the press head is actuated, a roller MR for measuring the feed speed of the stock is connected to a pilot generator 31 which controls the rotary speed of the drive motor 1. A more refined control system (Fig. 6, not shown) comprises a pulse generator fixed to the shaft 7 (Fig. 1) which feeds signals to a gate circuit through which a die set position detection device feeds pulses to a computer. According to the difference between these positions and prescribed positions a motor 36 is driven to adjust the speed ratio of the speed changer 2 through which the motor 1 drives the shear.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6083667 | 1967-09-23 | ||
JP6083567A JPS4820077B1 (en) | 1967-09-23 | 1967-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1240283A true GB1240283A (en) | 1971-07-21 |
Family
ID=26401889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4459268A Expired GB1240283A (en) | 1967-09-23 | 1968-09-19 | Method and apparatus for high speed cutting of profiled steel sections |
Country Status (3)
Country | Link |
---|---|
US (1) | US3581616A (en) |
DE (1) | DE1777202A1 (en) |
GB (1) | GB1240283A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2611988A1 (en) * | 1976-03-20 | 1977-09-29 | Schloemann Siemag Ag | FLYING CUTTING SHEARS FOR SHEET METALS |
JPS5454383A (en) * | 1977-10-07 | 1979-04-28 | Fuji Photo Film Co Ltd | Cutting method and apparatus for cutting web plate at fixed length |
JPS5933486B2 (en) * | 1980-12-20 | 1984-08-16 | 株式会社明電舎 | shearing machine |
ES2738576T3 (en) * | 2015-04-30 | 2020-01-23 | Radie Bv | Device for cutting pasta |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2133542A (en) * | 1935-06-10 | 1938-10-18 | Ternstedt Mfg Co | Cut-off machine |
US2498249A (en) * | 1941-04-19 | 1950-02-21 | Westinghouse Electric Corp | Adjustable counting relay system |
US2591256A (en) * | 1946-05-08 | 1952-04-01 | Baker Perkins Inc | Biscuit cutting machine and the like |
US3162079A (en) * | 1961-09-12 | 1964-12-22 | Mckay Machine Co | Apparatus for cutting metal strip into sheets |
-
1968
- 1968-09-16 US US3581616D patent/US3581616A/en not_active Expired - Lifetime
- 1968-09-19 GB GB4459268A patent/GB1240283A/en not_active Expired
- 1968-09-23 DE DE19681777202 patent/DE1777202A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US3581616A (en) | 1971-06-01 |
DE1777202A1 (en) | 1971-07-22 |
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