US3721876A - Electromagnetic selector - Google Patents

Electromagnetic selector Download PDF

Info

Publication number
US3721876A
US3721876A US00167767A US3721876DA US3721876A US 3721876 A US3721876 A US 3721876A US 00167767 A US00167767 A US 00167767A US 3721876D A US3721876D A US 3721876DA US 3721876 A US3721876 A US 3721876A
Authority
US
United States
Prior art keywords
stops
arm
motor
circuits
stop
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 - Lifetime
Application number
US00167767A
Other languages
English (en)
Inventor
P Guidet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3721876A publication Critical patent/US3721876A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/06—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using cams, discs, rods, drums or the like
    • G05B19/063—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using cams, discs, rods, drums or the like for sequential programme-control without delivering a reference value

Definitions

  • SHEET 2 or s ⁇ NVENTOR BY e re CDUIDET ELECTROMAGNETIC SELECTOR This invention relates to an electromagnetic device permitting to select, to arrange in order, and to control the successive operations of a mechanical, thermal, hydraulic, or electric machine, which machine may be manually or automatically controlled.
  • the electromagnetic selector in accordance with the invention, is for automatically operating a control device or a number of electrical circuits in various positions in a predetermined sequence during predetermined time intervals and according to a predetermined cycle, while permitting to obtain as many different cycles and rapid transfer from one cycle to the other.
  • the selector comprises an electric motor having a driving shaft, an arm coupled to the shaft, a cylinder mounted adjacent the arm, a finger secured to the arm and adapted to move around the periphery of the cylinder, and a series of stops positioned around the periphery or the cylinder and adapted to be engaged by the finger during rotation thereof.
  • the stop include contact bearing stops the contacts of which are connected to a timing relay, a timing stop for providing dead times in the operation of the control device or of the electrical circuits, and fixed stops located at both ends of the above-mentioned series of stops for energizing the motor.
  • An interrupter is positioned adjacent the timing stop for stopping the motor.
  • the electric motor is coupled through an electromagnetic device to disengageable gears connected to a pinion which is secured to a worm gear adapted to engage the above-mentioned retractable stops which, in this embodiment, are positioned on a flat base.
  • a. in the electrical and electronic fields to automatically regulate the energization of a predetermined number of circuits (control, lighting or power circuits) in a predetermined sequence, during predetermined time intervals, according to a predetermined cycle, while permitting to obtain as many different cycles as it is wanted with the same set-up and the rapid transfer from one cycle to the other on a same machine, such as, for example, regulation of traffic lights, control of various mechanisms of the control circuits of an automatic machine or of a machine which it is desired to render automatic;
  • control device in the mechanical field to automatically operate a control device (lever, wheel, etc.) in various positions, in a predetermined sequence, during predetermined time intervals, according to a predetermined cycle, while permitting to obtain as many different cycles as it is wanted with the same set-up and the rapid transfer from one cycle to the other;
  • FIG. l is a perspective schematic view of a work piece to be realized with the machine in accordance with the invention.
  • FIG. 2 is a schematic view of a selector in accordance with the invention using an arm, a cylinder and electromagnetically retractable stops;
  • FIG. 3 is a side view of the device illustrated in FIG.
  • FIG. 4 illustrates a second embodiment of the system illustrated in FIG. 2;
  • FIG. 5 illustrates a third embodiment of the device in accordance with the invention.
  • FIGS. 6 illustrates a schematic view of an electromagnetic retractable stop used with the selector device in accordance with the invention.
  • a work piece 1 such as illustrated in FIG. 1.
  • the holes are located on different circumferences and have between themselves various angles 01'] to a5.
  • Such a work piece is first positioned on a table which may be rotated by means of a control wheel 2 the angles or rotation al to a5 of which correspond to the above-mentioned angles between the holes of the work piece.
  • control wheel of the drill is rotated an angle (11 to bring it to position 2 and the table supporting the work piece 1 rotates an angle a l and comes into position 2;
  • the chuck carrying slide bar is again lowered to drill the second hole of diameter D2 and, after drilling the hole, returns to its upper position under the control of its return spring;
  • control wheel is rotated an angle 0:2 to bring it into position 3 and the table rotates a corresponding angle (1'2 and comes into position 3;
  • the apparatus illustrated schematically in FIGS. 2, 3 and 6 comprises an electric motor 3 having a driving shaft 5 upon which is keyed an arm 4 which is biased by a powerful spring 6 towards its extreme end of travel position.
  • One of the ends of the spring 6 is connected to arm 4 while the other end thereof is connected to the stator of motor 3 or to a fixed piece.
  • the arm 4 has at its free end a finger 7 which may be rotated around the periphery of a cylinder 8 upon which are mounted contact bearing retractable stops 9, the contacts of each stop being connected to a timing relay 10.
  • a retractable timing stop 11 is provided to realize a dead time for installing and dismantling a work piece on the machine.
  • Each contact bearing timing stop is connected to a timing relay for a time duration to
  • the six contact bearing selection stops 9 are connected respectively to six timing relays 10 during time intervals :1 to t6 respectively.
  • the contacts permitting closure of the electromagnetic circuits of the six stops 9 are of the delayed type. The time delay thereof corresponds to the time necessary to permit the return of the chucks to their rest position once a hole has been drilled.
  • the extreme stop 16 is fixed, that is non-retractable.
  • the energization of the motor 3 is insured by means of the timing relay of such fixed stop 12 at the time when the relay is dropped.
  • the stopping of the motor is insured by means of an interrupter placed under the timing stop 11.
  • the apparatus so far disclosed operates as follows:
  • the operator places a work piece on the machine and fixes it in position. He will then energize the motor 3 through a manual switch.
  • the motor 3 will drive the arm 4 and the finger 7 connected thereto as well as the driving wheel 2 until the arm 4 gets into the original position.
  • the selection stops 9 as well as the timing stop 11 are retracted by the arm 4 coming in contact with the can shape of the stops.
  • the switch associated with such timing stop stops the motor.
  • the arm 4 being then biased only by its return spring 6 starts to move in the opposite direction.
  • the finger 7 contacts the timing stop 11 and the contact of such timing stop feeds the winding of the timing relay of timing interval to The assembly of arm 4, finger 7 and control wheel 2 is thus immobilized.
  • the circuit for the automatic feed of the winding of the timing relay comprises a contact the opening of which is delayed by a few seconds. When such a contact opens, the winding of the timing relay is not energized any more and the timing relay comes back to its rest position. The contact of the circuit of the stop electromagnet is open, the stop is no more attracted and returns to its normal position under the action of its return spring (FIG. 6). The device is then ready for the next cycle.
  • the finger 7 is now in contact with stop 1 and the winding of the timing relay having timing interval t1 is fed as well as the circuit No. 1 feeding the device controlling the lowering of the chuck for drilling the first hole of diameter D1.
  • the timing relay drops and the winding of the relay is automatically fed by a contact which is closed and by another contact the opening of which is delayed.
  • the contact of circuit No. 1 opens and stops the device controlling the lowering of the chuck.
  • the chuck of diameter D1 returns to its rest position under the action of its return spring.
  • the contact of the electromagnetic circuit of the stop which is delayed in its closure is then closed and feeds the electromagnet which attracts the stop against the action of its return spring.
  • the stop frees the finger 7 which then comes in contact against stop No.
  • an arm 4 which may be disengaged in the case wherein rotation of the motor in both directions is required.
  • the device may also be coupled with an electromagnetic clutch.
  • the embodiment using an arm with a return spring is possible when the total angle of rotation is relatively small and when it is necessary to return to a rest position in a direction opposite to the direction of selection.
  • an electromagnetic clutch l2 driving a disengageable gear 13 which is coupled with a pinion 14 secured to a worm screw driving a nut 15, which nut operates the contact bearing retractable stops 9.
  • the operation of an additional contact opens the feeding circuit of the electromagnetic clutch and the arm or the nut is no more driven.
  • a disengageable arm with an electromagnetic clutch together with a motor having two directions of rotation.
  • the two directions of rotation of the motor are givenby the relays of the extreme stops at a time when they drop.
  • a disengageable arm 4 permits the driving thereof when such arm is not against a stop. It permits to obtain an adjustable contact force for the finger 7 against the contact bearing stop 9.
  • the driving of arm 4 may be done by means other than an electric motor.
  • the timing stop 11 may be located in any position with respect to the selection stops 9 each time that a dead time is needed.
  • the set-up of FIG. 5 must be used in one or two directions of selection.
  • the driving of the worm screw of FIG. 5 may be done not only by means of tooted pinions but also be pulleys and belts or by any other systems.
  • Electromagnetic selector for automatically operating a control device or a number of electrical circuits in various positions, in a predetermined sequence, during predetermined time intervals, and according to a predetermined cycle, while pennitting to obtain as many different cycles with the same set-up and the rapid transfer from one cycle to the other, comprising: a motor having a driving shaft; an arm coupled to said shaft; a cylinder mounted adjacent said arm; a finger secured to said arm and adapted to move around the periphery of said cylinder; a series of stops positioned around said cylinder and adapted to be engaged by said finger, said stops including contact bearing retractable stops for operating said device or circuits, a retractable timing stop for providing dead times in the operation of said device or circuits, and fixed stops for energizing said motor; and an interruptor positioned under said retractable timing stop for stopping said motor.
  • Electromagnetic selector as defined in claim 1, wherein said arm is keyed to said shaft and is biased into an extreme end of travel position by a heavy spring one end of which is connected to the arm and the other arm of which is fixed to a stationary point.
  • Electromagnetic selector for automatically operating a control device or a number of electrical circuits in various positions, in a predetermined sequence, during predetermined time intervals, and according to a predetermined cycle, while permitting to obtain as many different cycles with the same set-up and the rapid transfer from one cycle to the other, comprising: a motor having a driving shaft; an electromagnetic clutch connected to said driving shaft; a gear coupled to said electromagnetic clutch; a pinion coupled to said gears; a worm screw driven by said pinion; a nut coupled with said worm screw; a series of stops located on a flat base adjacent said motor and adapted to be engaged by said nut, said stops including contact bearing retractable stops for operating said device or circuits, a retractable timing stop for providing dead time in the operation of said device or circuits, and fixed stops for energizing said motor; and an interruptor positioned under said timing stop for stopping said motors.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position Or Direction (AREA)
US00167767A 1970-07-31 1971-07-30 Electromagnetic selector Expired - Lifetime US3721876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR707029128A FR2097086B2 (cs) 1970-07-31 1970-07-31

Publications (1)

Publication Number Publication Date
US3721876A true US3721876A (en) 1973-03-20

Family

ID=9059922

Family Applications (1)

Application Number Title Priority Date Filing Date
US00167767A Expired - Lifetime US3721876A (en) 1970-07-31 1971-07-30 Electromagnetic selector

Country Status (3)

Country Link
US (1) US3721876A (cs)
DE (1) DE2135123A1 (cs)
FR (1) FR2097086B2 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476434A (en) * 1982-01-25 1984-10-09 The United States Of America As Represented By The United States Department Of Energy Non-destructive testing method and apparatus utilizing phase multiplication holography

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1403342A (en) * 1920-04-30 1922-01-10 Cutlerhammer Mfg Co Motor controller
US2725514A (en) * 1947-03-18 1955-11-29 Allen Sherman Hoff Co Electrical control apparatus for stopping electric motor
US3081410A (en) * 1957-01-24 1963-03-12 Lawrence A Vogl Electrical controlling apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1403342A (en) * 1920-04-30 1922-01-10 Cutlerhammer Mfg Co Motor controller
US2725514A (en) * 1947-03-18 1955-11-29 Allen Sherman Hoff Co Electrical control apparatus for stopping electric motor
US3081410A (en) * 1957-01-24 1963-03-12 Lawrence A Vogl Electrical controlling apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4476434A (en) * 1982-01-25 1984-10-09 The United States Of America As Represented By The United States Department Of Energy Non-destructive testing method and apparatus utilizing phase multiplication holography

Also Published As

Publication number Publication date
FR2097086B2 (cs) 1973-06-08
DE2135123A1 (de) 1972-02-10
FR2097086A2 (cs) 1972-03-03

Similar Documents

Publication Publication Date Title
US2652942A (en) Method of and apparatus for attaching clinch nuts to sheet metal members
US3182813A (en) Article manipulator apparatus
US3830584A (en) Turret system for machine tool
US2630467A (en) Electric clutch and brake controlled press
US3721876A (en) Electromagnetic selector
US2011486A (en) Turret mechanism for machine tools
US3244037A (en) Mechanism for grooving mine hoist drums and the like
US2843976A (en) Incremental feed mechanisms
US2882761A (en) Radial drill spindle feed
EP0064387A1 (en) Electric indexing drive and stepping motor therefor
US3031054A (en) Automatic indexing bar
US1732038A (en) Stud-setting machine
US3774295A (en) Method of forming a worm shaft
US3029327A (en) Remotely controllable rotary switch
US3188077A (en) Work holding fixture
US3599680A (en) Machine for making wire-wound disc armatures
US4588067A (en) Workpiece clamping mechanism for multiple station transfer machines utilizing rotary drive
US1975008A (en) Machine tool having an indexing movement
US3316469A (en) Plural motor remote control system
GB798858A (en) Improvements in or relating to power operated chucks for lathes
US3138974A (en) Spindle selector for machine having a turret head
US3797326A (en) Coil spring worm shaft
US2726358A (en) Portable electric motor power unit
US3216293A (en) Method of grooving mine hoist drums and the like
US3187405A (en) Screw assembling and staking apparatus