GB1058747A - A machine tool gear-box speed ratio change apparatus - Google Patents
A machine tool gear-box speed ratio change apparatusInfo
- Publication number
- GB1058747A GB1058747A GB3749264A GB3749264A GB1058747A GB 1058747 A GB1058747 A GB 1058747A GB 3749264 A GB3749264 A GB 3749264A GB 3749264 A GB3749264 A GB 3749264A GB 1058747 A GB1058747 A GB 1058747A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- motor
- mps
- relay
- closes
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/12—Mechanical drives with means for varying the speed ratio
- B23Q5/14—Mechanical drives with means for varying the speed ratio step-by-step
- B23Q5/145—Mechanical drives with means for varying the speed ratio step-by-step fluid-operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0274—Control units where shifting is directly initiated by the driver, e.g. semi-automatic transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2708/00—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
- F16H2708/10—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes only the toothed wheels may be disengaged
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2708/00—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
- F16H2708/24—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes with a preselection system, mainly semi-automatic, e.g. with automatic preselection, but controlled at the intended moment, with force amplification
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1,058,747. Change-speed control. ATELIERS G.S.P. (GUILLEMIN - SERGOT : PEGARD). Sept. 14, 1964 [Sept. 19. 1963], No. 37492/64. Heading F2D. 3 change speed control for a machine tool gear comprises a preselector valve DS between a pump P and differential stroke hydraulic servomotors PC2, PC3 which act on an axially slidable gear cluster 2 in opposition to a smaller section servomotor PC1 connected directly to the pump P, and an executive switch B5, closure of which de-energizes a main driving motor MP and energizes a secondary motor MPS which drives the gear at an inching speed through a clutch 4, 5 and drives the pump P supplying pressure liquid to the servomotors and after gear establishment the pressure liquid operates a pressure sensitive switch MC causing deenergization of the motor MPS and re-energization of the driving motor MP. The clutch 4, 5 may be electromagnetically operated, centrifugal or, as shown, operated by pressure liquid supplied by the pump P to a servomotor 3. A valve 13 prevents pressure liquid being supplied to the servomotors PC1, PC2, PC3 until the clutch 4, 5 is engaged. To start the machine the executive lever ML closes forward or reverse switch B1 or B2 to energize a relay C1 or C2 which closes a switch C11 or C21 to start the main motor MP in the forward or reverse direction and opens switch C12 or C22 to prevent energization of the other relay C2 or C1. To establish a ratio which has been preselected by movement of the valve DS, the lever ML is moved from the forward or reverse position to operate the switch B5 and returned to the forward or reverse position. Thus the switch B1 or B2 is opened to stop the main motor MP and thereafter closure of the switch B5 completes the circuit to a relay C5 which closes switches C51 to start the secondary motor MPS in a forward direction, closes a holding switch C53 and opens switches C54, C52 which prevent energization of relays C1, C2, C6. The motor MPS drives the pump P which supplies pressure liquid initially to engage the clutch and thereafter through the valve 13 to the ratio establishing servomotors PC1, PC2, PC3. After establishment of the new ratio the liquid pressure rises and closes the pressure-sensitive switch MC which completes the circuit to a relay R. The relay R opens a switch R13 to de-energize the relay C5 and stop the motor MPS. opens a switch R14 to prevent energization of the relays C1, C2, closes a switch R11 to energize a relay C6 which closes switches C61 to re-start the motor MPS in the opposite direction and thus de-pressurize the hydraulic circuit, and after a predetermined delay opens a switch R12 to de-energize the relays R1, C6, whereupon the motor MPS stops and the circuit to one of the relays C1, C2 is completed through the now closed switches C54, R14 and switch B1 or B2 to restart the motor MP. In Figs. 2 and 4 (not shown) a double acting clutch servomotor is connected to the pump P and a reservoir through a flow reversing valve which is spring-biased to normally supply pressure liquid to the clutch engaging side of the servomotor. After ratio establishment the liquid pressure increase overcomes the spring bias and changes the valve to supply pressure liquid to the clutch disengaging side of the servomotor. A cam on the valve spool operates a switch to stop the secondary motor.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR947952A FR1376734A (en) | 1963-09-19 | 1963-09-19 | Preselection device for machine tool gearbox |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1058747A true GB1058747A (en) | 1967-02-15 |
Family
ID=8812654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3749264A Expired GB1058747A (en) | 1963-09-19 | 1964-09-14 | A machine tool gear-box speed ratio change apparatus |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1450837C3 (en) |
FR (1) | FR1376734A (en) |
GB (1) | GB1058747A (en) |
-
1963
- 1963-09-19 FR FR947952A patent/FR1376734A/en not_active Expired
-
1964
- 1964-09-11 DE DE19641450837 patent/DE1450837C3/en not_active Expired
- 1964-09-14 GB GB3749264A patent/GB1058747A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1450837B2 (en) | 1973-03-29 |
DE1450837A1 (en) | 1969-04-30 |
FR1376734A (en) | 1964-10-31 |
DE1450837C3 (en) | 1973-10-11 |
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