GB442820A - Improvements in and relating to lathes - Google Patents

Improvements in and relating to lathes

Info

Publication number
GB442820A
GB442820A GB14730/35A GB1473035A GB442820A GB 442820 A GB442820 A GB 442820A GB 14730/35 A GB14730/35 A GB 14730/35A GB 1473035 A GB1473035 A GB 1473035A GB 442820 A GB442820 A GB 442820A
Authority
GB
United Kingdom
Prior art keywords
clutch
gears
shaft
pick
friction clutch
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
GB14730/35A
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.)
PITTLER WERKZEUGMASCHINENFAB
Original Assignee
PITTLER WERKZEUGMASCHINENFAB
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 PITTLER WERKZEUGMASCHINENFAB filed Critical PITTLER WERKZEUGMASCHINENFAB
Publication of GB442820A publication Critical patent/GB442820A/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
    • B23Q5/12—Mechanical drives with means for varying the speed ratio
    • B23Q5/14—Mechanical drives with means for varying the speed ratio step-by-step
    • B23Q5/142—Mechanical drives with means for varying the speed ratio step-by-step mechanically-operated
    • 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
    • B23Q2705/06—Mechanical drives with means for varying the speed ratio
    • B23Q2705/062—Mechanical drives with means for varying the speed ratio for lathes
    • B23Q2705/064—Mechanical drives with means for varying the speed ratio for lathes mechanically controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Transmission Devices (AREA)

Abstract

442,820. Driving machines. PITTLER WERKZEUGMASCHINENFABRIK AKT.-GES., Wahren, Leipsic, Germany. May 20, 1935, No. 14730. Convention date, July 13, 1934. [Class 83 (iii)] [See also Group XXIV] A variable-speed driving-gear suitable for use with an automatic lathe and adapted to be arranged separate from the headstock thereof comprises a power-driven shaft, pick-off gears transmitting the drive to a second shaft, a double friction clutch on said second shaft for transmitting the drive along alternative paths to two transmissions to the spindle, further pick-off wheels interposed in one of said alternative paths and means associated with the spindle for the selective use of either of said transmissions for driving the spindle. The motor 1<m> or belt pulley 1<e> may be arranged within or outside the bed of the machine and rotates the shaft 2, which is connected with a second shaft 5, by pick-off gears 3, 4. Friction clutches 8, 9 on the latter shaft together with friction clutches 20, 33 on the separate headstock spindle 22, which is connected by chains 18, 31, or by toothed gears, with the gearbox, enable four speeds to be obtained with each group of pick-off wheels. A hand-operated reversing device comprising wheels 26-28, Fig. 3, mounted on a rotatable plate 34 is employed in the trains which gives speeds suitable for screw-cutting. Further pick-off wheels 14, 15 are also employed when the drive is via the friction clutch 8. The four possible gear trains are :-Firstly, friction clutch 8, gears and shafts 10-17, chain 18 and friction clutch 20 ; secondly, friction clutch 9, gears and shafts 23, 24, 16, 17, chain 18 and clutch 20 ; thirdly, friction clutch 8, gears and shafts 10-16, and 25-30, chain 31 and clutch 33 ; fourthly, clutch 9, gears and shafts 23-30, chain 31 and clutch 33 the latter two giving slow speed drives suitable for screw cutting and, as explained above, adapted for reversal. An over-run coupling 36 is interposed between the wheel 12 and shaft 13 to enable this wheel to run idly when the clutch 9 is engaged.
GB14730/35A 1934-07-13 1935-05-20 Improvements in and relating to lathes Expired GB442820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE442820X 1934-07-13

Publications (1)

Publication Number Publication Date
GB442820A true GB442820A (en) 1936-02-17

Family

ID=6525272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14730/35A Expired GB442820A (en) 1934-07-13 1935-05-20 Improvements in and relating to lathes

Country Status (1)

Country Link
GB (1) GB442820A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919593A (en) * 1957-02-22 1960-01-05 Index Werke Kg Hahn & Tessky Machine tool transmission
US3192798A (en) * 1962-08-28 1965-07-06 Brown & Sharpe Mfg Spindle transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919593A (en) * 1957-02-22 1960-01-05 Index Werke Kg Hahn & Tessky Machine tool transmission
US3192798A (en) * 1962-08-28 1965-07-06 Brown & Sharpe Mfg Spindle transmission

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