GB860051A - Improvements in change-speed gearing for mechanical drawing presses - Google Patents
Improvements in change-speed gearing for mechanical drawing pressesInfo
- Publication number
- GB860051A GB860051A GB37942/58A GB3794258A GB860051A GB 860051 A GB860051 A GB 860051A GB 37942/58 A GB37942/58 A GB 37942/58A GB 3794258 A GB3794258 A GB 3794258A GB 860051 A GB860051 A GB 860051A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clutch
- ratio
- shaft
- low
- disc
- 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
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
- B30B1/266—Drive systems for the cam, eccentric or crank axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
860,051. Change-speed gear; friction clutches. WELDED PRODUCTS Ltd. Nov. 25, 1958 [Dec. 5, 1957], No. 37942/58. Class 80 (2). In a two-speed gear, intended particularly for a mechanical drawing press, the input shaft 4 drives a parallel output shaft 9 through low and high ratio pairs of pinions 7, 11 and 8, 12 respectively, and one of a pair of associated multi-disc clutches A, B on shaft 9, the low-ratio clutch A normally being disengaged and the high-ratio clutch B engaged, means being provided however to disengage clutch A and engage clutch B to render the low-ratio drive effective. In the arrangement shown the clutches are separated by a spacer disc 24, and the retaining plates of the respective clutches are pressed apart by groups of springs 30A, 30B, of which the former are stronger than the latter so that, normally, they maintain clutch A disengaged and, through a circumferential series of pins 28A in disc 24, maintain clutch B engaged, to render the high-ratio gear 8, 12 effective. To render the low-ratio gear 7, 11 operative compressed-air is supplied through passages 27, 28 in shaft 9 and disc 24, respectively, to act upon a diaphragm 26 and over-ride springs 30A, thus engaging clutch B and disengaging clutch A, the admission and release of the air being controlled by valves actuated by cams on shaft 9. When applied to a drawing press the low-ratio gear is operative during that part of a revolution of shaft 9 corresponding to the drawing operation, the high-ratio being operative during the remainder of the revolution, thereby increasing the effective stroke rate of the press.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU860051X | 1957-12-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB860051A true GB860051A (en) | 1961-02-01 |
Family
ID=3762518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37942/58A Expired GB860051A (en) | 1957-12-05 | 1958-11-25 | Improvements in change-speed gearing for mechanical drawing presses |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB860051A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2436917A1 (en) * | 1978-09-21 | 1980-04-18 | Kloeckner Humboldt Deutz Ag | GEARBOX WITH TWO SWITCHING GROUPS LIKELY TO BE SWITCHED IN LOAD RESPECTIVELY BY A FRICTION SWITCHING CLUTCH |
FR2440497A1 (en) * | 1978-10-30 | 1980-05-30 | Kloeckner Humboldt Deutz Ag | DEVICE FOR CONTROLLING A GEARBOX |
CN102425663A (en) * | 2011-12-07 | 2012-04-25 | 湖南利尔电路板有限公司 | Pneumatic non-stop gear shift device for industrial gear box |
-
1958
- 1958-11-25 GB GB37942/58A patent/GB860051A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2436917A1 (en) * | 1978-09-21 | 1980-04-18 | Kloeckner Humboldt Deutz Ag | GEARBOX WITH TWO SWITCHING GROUPS LIKELY TO BE SWITCHED IN LOAD RESPECTIVELY BY A FRICTION SWITCHING CLUTCH |
FR2440497A1 (en) * | 1978-10-30 | 1980-05-30 | Kloeckner Humboldt Deutz Ag | DEVICE FOR CONTROLLING A GEARBOX |
CN102425663A (en) * | 2011-12-07 | 2012-04-25 | 湖南利尔电路板有限公司 | Pneumatic non-stop gear shift device for industrial gear box |
CN102425663B (en) * | 2011-12-07 | 2014-06-25 | 湖南利尔电路板有限公司 | Pneumatic non-stop gear shift device for industrial gear box |
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