GB674656A - Improvements in or relating to screw-cutting lathes - Google Patents

Improvements in or relating to screw-cutting lathes

Info

Publication number
GB674656A
GB674656A GB3726/50A GB372650A GB674656A GB 674656 A GB674656 A GB 674656A GB 3726/50 A GB3726/50 A GB 3726/50A GB 372650 A GB372650 A GB 372650A GB 674656 A GB674656 A GB 674656A
Authority
GB
United Kingdom
Prior art keywords
wheel
pinion
screw
shaft
saddle
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
GB3726/50A
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.)
Maschinenfabrik Heid AG
Machinefabrik Heid AG
Original Assignee
Maschinenfabrik Heid AG
Machinefabrik Heid AG
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 Maschinenfabrik Heid AG, Machinefabrik Heid AG filed Critical Maschinenfabrik Heid AG
Publication of GB674656A publication Critical patent/GB674656A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/02—Thread cutting; Automatic machines specially designed therefor on an external or internal cylindrical or conical surface, e.g. on recesses
    • B23G1/04—Machines with one working-spindle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)

Abstract

674,656. Screw-cutting lathes. MASCHINENFABRIK HEID AKT.-GES. Feb. 14, 1950 [March 2, 1949], No. 3726/50. Class 83 (iii). A lathe having a lead-screw and a feed shaft driven from the headstock spindle, the feed shaft driving a pinion which co-operates with a rack on the lathe bed, is characterized in that an additional gear train is interposed in the gear drive connecting the headstock spindle to the pinion to enable the saddle to be fed at the same rate of feed by the feed shaft as by the lead-screw. The feed shaft drives through bevel gears 2 a worm and worm wheel 3, 4, carried by the saddle. This drive may be connected to the cross-traverse screw by sliding a pinion 5 on the shaft of the bevel wheel into mesh with a pinion 16. The pinion 5 when disengaged from the cross-traverse train may be engaged with a wheel 6, Fig. 2, and a pinion 7, secured to the same shaft as this wheel, may then be engaged to drive the rack pinion 9 for the saddle feed movements by sliding the wheel block 8, 14, to engage gears 7 and 8. When the wheel block is moved in the opposite direction, wheel 14 engages a wheel 13 forming a block with wheel 12, the latter is driven by a wheel 11, also on the worm wheel shaft, and the saddle is thus fed at the same rate as that given by the lead-screw, thus enabling the feed shaft to be used for the initial roughing cuts of a screw-cutting operation.
GB3726/50A 1949-03-02 1950-02-14 Improvements in or relating to screw-cutting lathes Expired GB674656A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT674656X 1949-03-02

Publications (1)

Publication Number Publication Date
GB674656A true GB674656A (en) 1952-06-25

Family

ID=3678751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3726/50A Expired GB674656A (en) 1949-03-02 1950-02-14 Improvements in or relating to screw-cutting lathes

Country Status (1)

Country Link
GB (1) GB674656A (en)

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