GB929059A - Improvements relating to driving and control mechanisms for power-operated machine tools - Google Patents

Improvements relating to driving and control mechanisms for power-operated machine tools

Info

Publication number
GB929059A
GB929059A GB385261A GB385261A GB929059A GB 929059 A GB929059 A GB 929059A GB 385261 A GB385261 A GB 385261A GB 385261 A GB385261 A GB 385261A GB 929059 A GB929059 A GB 929059A
Authority
GB
United Kingdom
Prior art keywords
slide
shuttle
air
cylinder
pump
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
Application number
GB385261A
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
Priority to GB385261A priority Critical patent/GB929059A/en
Priority to US209437A priority patent/US3165979A/en
Publication of GB929059A publication Critical patent/GB929059A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • 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
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/26—Fluid-pressure drives

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Machine Tool Units (AREA)

Abstract

929,059. Machine tool details. R. C. CLERK. Feb. 28, 1962 [Feb. 1, 1961], No. 3852/61. Class 83 (3). A driving and control mechanism for power - operated machine tools having a slide or work-table operated by means of an hydraulic cylinder comprises hydraulic fluid on one side of the piston in the cylinder for moving the slide in the non-working direction and an enclosed volume of gas on the other side for effecting slide movement in a working direction. Slide 3 is connected to a piston-rod 1 in a cylinder 2, air is supplied to the cylinder from an air receiver 4 connected to a compressor 4a, and hydraulic fluid is supplied to the other end of the cylinder by a motor-driven pump 6 via a valve 20, and a non-return valve 25. A back pressure control shuttle valve 5 has a shuttle 7 having an aperture 9 which can be aligned with a port 10, and reduced diameter ends 11, 14 of the shuttle are connected to the hydraulic fluid, and the air, respectively. In operation, with port 10 closed by shuttle 7, pump 6 supplies fluid to oil space 13, and slide 3 is moved to the right, Fig. 1, against the air pressure. The slide contacts a switch 22, which cuts out pump 6, the air pressure on the end 14 of shuttle 7 is relieved, and the oil pressure on end 11 moves the shuttle to open port 10. Slide 3 is moved quickly to the left, controlled by a speed control valve 16, and the oil is discharged through a pipe 26 to a reservoir 23. A projection 19 engages a switch 18 which actuates a stroke limit control valve 17, to apply full air pressure to end 14, tending to close shuttle 7, against the rising back pressure acting on end 11, and retard the slide. The slide is cushioned due to a restriction 24 in the oil line. Shuttle 7 may be controlled by hydraulic pressure derived from a pump, or if air is used, this may be supplied by a separate pump.
GB385261A 1961-02-01 1961-02-01 Improvements relating to driving and control mechanisms for power-operated machine tools Expired GB929059A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB385261A GB929059A (en) 1961-02-01 1961-02-01 Improvements relating to driving and control mechanisms for power-operated machine tools
US209437A US3165979A (en) 1961-02-01 1962-07-12 Driving and control mechanisms for power-operated machine tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB385261A GB929059A (en) 1961-02-01 1961-02-01 Improvements relating to driving and control mechanisms for power-operated machine tools

Publications (1)

Publication Number Publication Date
GB929059A true GB929059A (en) 1963-06-19

Family

ID=9766148

Family Applications (1)

Application Number Title Priority Date Filing Date
GB385261A Expired GB929059A (en) 1961-02-01 1961-02-01 Improvements relating to driving and control mechanisms for power-operated machine tools

Country Status (1)

Country Link
GB (1) GB929059A (en)

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