GB692915A - Rotary drive for flying metal-cutting shears - Google Patents
Rotary drive for flying metal-cutting shearsInfo
- Publication number
- GB692915A GB692915A GB3045951A GB3045951A GB692915A GB 692915 A GB692915 A GB 692915A GB 3045951 A GB3045951 A GB 3045951A GB 3045951 A GB3045951 A GB 3045951A GB 692915 A GB692915 A GB 692915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shear
- clutch
- train
- shaft
- drive
- 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
- B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
- B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
- B23D36/0033—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length
- B23D36/0041—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length the tool moving continuously
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shearing Machines (AREA)
Abstract
692,915. Shearing. LOEWY ENGINEERING CO., Ltd. Dec. 31, 1951, No. 30459/51. Class 83 (iv). A rotary drive for flying shears comprises two separate gear trains with different speed reductions which are alternately made operative and inoperative between successive cutting operations to enable one gear train to drive the shear during cutting and the other to drive the shear during the rest of the cycle. Rotary flying shears 10 with blades 13 are driven through a reduction gear 14 from a shaft 22 coupled through gearing 23, 24 and an electromagnetic clutch 26 to a shaft 21 rotated from an electromotor 19. The train 23 rotates the shear at the basic speed and the train 24 drives the shear at less than the basic speed. If the train 23 is permanently in operation and the train 24 inoperative the shear will be driven at the basic speed. In order to vary the length cut the clutch 26 is actuated to allow the electromotor 19 to drive the shear at a reduced speed through the gearing 28 between cuts. The clutch 26 may be controlled by two rotary cam-actuated switches on the shaft 11, the operating cams being angularly adjustable. The clutch may also be controlled as shown in the drawing. A rotary limit switch 33 is attached to the shear shaft 11 and two small alternators 34, 35 driven from the shafts 21, 22 are coupled to an induction machine 36, the rotor of which carries control means 37 for energizing and de-energizing the coils 31, 32 of the clutch. The shear begins to rotate at basic speed. At a preselected point of rotation of the shear the clutch is operated by switch 33 and the gear train 24 made operative. The lag between the shafts 21, 22 is indicated by the rotor of the inductor 36 and the control means 37 operates the clutch when the difference reaches a predetermined amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3045951A GB692915A (en) | 1951-12-31 | 1951-12-31 | Rotary drive for flying metal-cutting shears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3045951A GB692915A (en) | 1951-12-31 | 1951-12-31 | Rotary drive for flying metal-cutting shears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB692915A true GB692915A (en) | 1953-06-17 |
Family
ID=10308030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3045951A Expired GB692915A (en) | 1951-12-31 | 1951-12-31 | Rotary drive for flying metal-cutting shears |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB692915A (en) |
-
1951
- 1951-12-31 GB GB3045951A patent/GB692915A/en not_active Expired
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