GB1246016A - Spindle rotary driving arrangements for machine tools - Google Patents

Spindle rotary driving arrangements for machine tools

Info

Publication number
GB1246016A
GB1246016A GB293769A GB293769A GB1246016A GB 1246016 A GB1246016 A GB 1246016A GB 293769 A GB293769 A GB 293769A GB 293769 A GB293769 A GB 293769A GB 1246016 A GB1246016 A GB 1246016A
Authority
GB
United Kingdom
Prior art keywords
spindle
speed
control
motor
control devices
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
GB293769A
Inventor
Derek Edwin Fitton
James Battersby Finch
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.)
GEARAIDE Ltd
Original Assignee
GEARAIDE 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 GEARAIDE Ltd filed Critical GEARAIDE Ltd
Priority to GB293769A priority Critical patent/GB1246016A/en
Publication of GB1246016A publication Critical patent/GB1246016A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical 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
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
    • B23Q15/08—Control or regulation of cutting velocity
    • B23Q15/10—Control or regulation of cutting velocity to maintain constant cutting velocity between tool and workpiece

Abstract

1,246,016. Speed controlling. GEARAIDE Ltd. 17 April, 1970 [17 Jan., 1969], No. 2937/69. Headings B3B. B3C and B3T. [Also in Divisions G3 and H2] A machine tool spindle drive, e.g. for a lathe or drilling and boring machine, comprises a direct current motor driving the spindle and a speed controlling arrangement that includes a plurality of thyristor control devices TC1-TC4 and a selector device for determining which thyristor control device is to be operative at any given time. The individual control devices are adjustable in infinitely small steps. The control of the spindle speed through the thyristor control devices and D.C. motor ensure substantially constant torque over the complete speed range. The selector device may comprise a peg board, or automatic control of the machine through punched tape may determine a required speed. The speed of rotation of the spindle may be varied with the feed of a crossslide to provide constant cutting speed by providing a potentiometer in the control circuit which is operated as the cross-slide moves. A load may be applied in the circuit of the motor to provide dynamic braking. This can be used to stop the spindle in a particular angular position. A thyristor control device is selected to produce a low spindle speed prior to stopping the spindle in its required angular position. A conventional gear driven lathe may be modified to the present control arrangement by providing a D.C. motor and fixing the gears in a selected gear.
GB293769A 1969-01-17 1969-01-17 Spindle rotary driving arrangements for machine tools Expired GB1246016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB293769A GB1246016A (en) 1969-01-17 1969-01-17 Spindle rotary driving arrangements for machine tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB293769A GB1246016A (en) 1969-01-17 1969-01-17 Spindle rotary driving arrangements for machine tools

Publications (1)

Publication Number Publication Date
GB1246016A true GB1246016A (en) 1971-09-15

Family

ID=9748872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB293769A Expired GB1246016A (en) 1969-01-17 1969-01-17 Spindle rotary driving arrangements for machine tools

Country Status (1)

Country Link
GB (1) GB1246016A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223965A (en) * 1988-10-21 1990-04-25 Jobs Spa Operating head chuck unit for automatic machine tools

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223965A (en) * 1988-10-21 1990-04-25 Jobs Spa Operating head chuck unit for automatic machine tools
GB2223965B (en) * 1988-10-21 1993-03-31 Jobs Spa Operating head chuck unit for automatic machine tools

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