GB929552A - Improvements in or relating to preselecting gear change mechanisms - Google Patents

Improvements in or relating to preselecting gear change mechanisms

Info

Publication number
GB929552A
GB929552A GB2443259A GB2443259A GB929552A GB 929552 A GB929552 A GB 929552A GB 2443259 A GB2443259 A GB 2443259A GB 2443259 A GB2443259 A GB 2443259A GB 929552 A GB929552 A GB 929552A
Authority
GB
United Kingdom
Prior art keywords
motor
change
gear
speed
switch
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
GB2443259A
Inventor
Alfred Johnson
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.)
William Asquith Ltd
Original Assignee
William Asquith Ltd
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 William Asquith Ltd filed Critical William Asquith Ltd
Priority to GB2443259A priority Critical patent/GB929552A/en
Priority to FR40539A priority patent/FR1260518A/en
Publication of GB929552A publication Critical patent/GB929552A/en
Expired legal-status Critical Current

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
    • F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
    • 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
    • B23Q5/18—Devices for preselecting speed of working-spindle
    • 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
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/46—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio
    • B23Q5/48—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio by use of toothed gears
    • 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
    • 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/02—Driving working spindles
    • B23Q2705/08—Devices for preselecting speed in gear boxes of lathes
    • 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
    • F16H2708/28—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 only the toothed wheels may be disengaged

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structure Of Transmissions (AREA)
  • Control Of Transmission Device (AREA)

Abstract

929,552. Change-speed control. WILLIAM ASQUITH Ltd. July 16, 1959, No. 24432/59. Class 80 (2). In a pre-selective control for change-speed gears in lathes and horizontal boring and milling machines, changes are effected by at least one hydraulic servomotor 13 which is controlled by a manual pre-selector valve 12 and a manual executive switch 27, the closure of which de-energizes and brakes a driving motor 10 and brings into circuit a governor switch 15 which is inoperative until the motor speed falls to a predetermined level when it energizes a solenoid valve 18 to connect the servomotor 13 to a source of pressure fluid 30 for gear establishment and releases the motor brake. Electrical means comprising switches 23, 24, 25 respectively actuated at each gear ratio by an extension 26 of the servomotor piston and a switch 29 actuated by the valve 12 returns the motor to its normal speed only on engagement of a pre-selected gear and indicates the engagement by a lamp 20. The motor 10 may be reversible, as shown, and controlled by a switch 14 effecting motor stopping, starting and reversing independent of the change speed control ; or the motor may be non-reversible with mechanical reversing means such as clutches and alternative gears associated with the change speed gear. An interlock, a solenoid of which is energized with the motor contactors, prevents actuation of the switch 27 when the machine is stationary. A manually or automatically actuated inching button is provided to rotate the gears in the event of clashing during gear change. The change-speed gear may have more or less than the three speeds shown. Specification 929,551 is referred to.
GB2443259A 1959-07-16 1959-07-16 Improvements in or relating to preselecting gear change mechanisms Expired GB929552A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2443259A GB929552A (en) 1959-07-16 1959-07-16 Improvements in or relating to preselecting gear change mechanisms
FR40539A FR1260518A (en) 1959-07-16 1960-06-24 Improvements to pre-selector devices for gear change, particularly in machine tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2443259A GB929552A (en) 1959-07-16 1959-07-16 Improvements in or relating to preselecting gear change mechanisms

Publications (1)

Publication Number Publication Date
GB929552A true GB929552A (en) 1963-06-26

Family

ID=10211645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2443259A Expired GB929552A (en) 1959-07-16 1959-07-16 Improvements in or relating to preselecting gear change mechanisms

Country Status (2)

Country Link
FR (1) FR1260518A (en)
GB (1) GB929552A (en)

Also Published As

Publication number Publication date
FR1260518A (en) 1961-05-05

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