GB1212274A - Improvements in or relating to stepping motors, in particular motors of pneumatic kind controlled by fluid amplifiers - Google Patents
Improvements in or relating to stepping motors, in particular motors of pneumatic kind controlled by fluid amplifiersInfo
- Publication number
- GB1212274A GB1212274A GB3567068A GB3567068A GB1212274A GB 1212274 A GB1212274 A GB 1212274A GB 3567068 A GB3567068 A GB 3567068A GB 3567068 A GB3567068 A GB 3567068A GB 1212274 A GB1212274 A GB 1212274A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trigger
- shaft
- pulse
- output
- fluid
- 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
- F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
- F16H39/01—Pneumatic gearing; Gearing working with subatmospheric pressure
-
- 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
- F16H31/00—Other gearings with freewheeling members or other intermittently driving members
- F16H31/003—Step-by-step mechanisms for rotary motion
- F16H31/005—Step-by-step mechanisms for rotary motion with pawls driven by a reciprocating or oscillating transmission member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Air Bags (AREA)
Abstract
1,212,274. Fluid logic and switching circuits. SOC. GENERALE DU VIDE "SOGEV". July 25, 1968 [July 25, 1967], No.35670/68. Heading F1P. A shaft 3 is rotated in steps in one direction or the other by pneumatic actuators 8, 9 fed with gas by a fluidic circuit 27, 37, 38, 42, Fig.3, operable to cause the shaft to move through one step in response to an input signal 25 and to a signal dependent on the position of the shaft 3. Each pneumatic actuator 8 or 9 has a pawl 6 or 7 movable, when the actuator is operated, into engagement with respective ratchet wheels 1, 2 arranged to drive the shaft 3 in opposite directions. The position signal is provided by the co-operation between a perforated tape, Fig. 6 (not shown) or wheel 16 driven by the shaft 3 and two oppositely facing nozzles 18, 19 between which passes the tape or wheel. When a perforation registers with the nozzles, flow takes place from nozzle 18 to nozzle 19. To rotate the shaft through one step the input signal 25, in the form of a short pulse is sent to a pulse-shaping circuit 27 including a fluid amplifier trigger 26. The output 29 from the trigger 26 is fed to a bi-stable fluid amplifier 28 having control inputs 30, 32 including restrictions 31, 33 and a reservoir 34. This arrangement produces an amplified control pulse 35 of predetermined duration. Triggers 39 and 43 change state as a result of the pulse 35 being sent to the input 70 of the trigger 39. Operation of the trigger 43 produces an output in line 45 and thereby causes the release of a locking pawl 14 from engagement with teeth 13 of a locking wheel 12 fixed to the shaft 3. Simultaneously the output in the line 45 passes to a switch 68 selectively positioned to pass on the output to one or other of bistable amplifiers 48, 49 depending on the desired direction of rotation. Assuming the switch passes the output to the input 46 of the bi-stable amplifier 48, the state thereof is changed and fluid passes to the actuator 8 through a line 62 to rotate the shaft 3. When the flow between the nozzles 18, 19 is interrupted the fluid supply to the control inlet 69 of the trigger 39 is lost and the trigger changes state thus causing the change-over of the trigger 43. As a result the trigger 43 produces an output at 50 to cause re-engagement of the locking pawl 14 and a delayed change-over in the amplifier 48. The actuator 8 is then returned to its starting position to await re-activation when a new control pulse 25 is received. The pulse shaping circuit 27 may be omitted if the pulses 25 are of sufficient duration. If the duration of each pulse is equal or greater than the stepping time, a modified synchronizing circuit 37 is necessary, Fig. 4 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR115494A FR1543267A (en) | 1967-07-25 | 1967-07-25 | Improvements to stepper motors, in particular pneumatic driven by fluid amplifiers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1212274A true GB1212274A (en) | 1970-11-11 |
Family
ID=8635714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3567068A Expired GB1212274A (en) | 1967-07-25 | 1968-07-25 | Improvements in or relating to stepping motors, in particular motors of pneumatic kind controlled by fluid amplifiers |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE718150A (en) |
DE (1) | DE1751766A1 (en) |
FR (1) | FR1543267A (en) |
GB (1) | GB1212274A (en) |
NL (1) | NL6810080A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2321971C2 (en) * | 1973-05-02 | 1983-11-24 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Stepper motor |
DE3130291C2 (en) * | 1981-07-31 | 1983-10-13 | Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen | Indexing gear |
-
1967
- 1967-07-25 FR FR115494A patent/FR1543267A/en not_active Expired
-
1968
- 1968-07-17 BE BE718150D patent/BE718150A/xx unknown
- 1968-07-17 NL NL6810080A patent/NL6810080A/xx unknown
- 1968-07-23 DE DE19681751766 patent/DE1751766A1/en active Pending
- 1968-07-25 GB GB3567068A patent/GB1212274A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1751766A1 (en) | 1971-08-05 |
BE718150A (en) | 1969-01-17 |
FR1543267A (en) | 1968-10-25 |
NL6810080A (en) | 1969-01-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |