GB711759A - Improvements relating to dieheads for forming screw-threads - Google Patents

Improvements relating to dieheads for forming screw-threads

Info

Publication number
GB711759A
GB711759A GB2702852A GB2702852A GB711759A GB 711759 A GB711759 A GB 711759A GB 2702852 A GB2702852 A GB 2702852A GB 2702852 A GB2702852 A GB 2702852A GB 711759 A GB711759 A GB 711759A
Authority
GB
United Kingdom
Prior art keywords
rolls
holders
work
sleeve
engagement
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
GB2702852A
Inventor
Arthur Harold Lloyd
Ernest Charles Picking
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.)
Alfred Herbert Ltd
Original Assignee
Alfred Herbert 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 Alfred Herbert Ltd filed Critical Alfred Herbert Ltd
Priority to GB2702852A priority Critical patent/GB711759A/en
Publication of GB711759A publication Critical patent/GB711759A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • B21H3/042—Thread-rolling heads
    • B21H3/044—Thread-rolling heads working axially

Abstract

711,759. Rolling screw-threads. HERBERT, Ltd., A. Oct. 28, 1952, No. 27028/52. Class 83 (4) In a die head for rolling screw threads, holders 14, Fig. 1, pivoted on axes parallel to the longitudinal axis of the head and carrying annnularly ridged rolls 11 mounted at a helical angle are held by cam faces 28 on a scroll sleeve 24 to maintain the rolls 11 in engagement with the work 17 and the sleeve is biased to rotate and free the rolls automatically when a required length of thread has been rolled. The body 19 of the die head carried by the saddle of a lathe and fed axially towards rotating work 17 in the lathe chuck carries the holders 14 on pins 18 and has the scroll sleeve 24 rotatably mounted on its outer periphery with the projecting cam edge 28 iri engagement with rolls 29 on. the holders 14. A cover plate 21 attached by. bolts 22 to the ends of the pins 18 retains the holders 14 and sleeve 24 in position and permits interchange of holders having different forming rolls. Springs 31 in slots 50 in the body 19 engaging the holders 14 through pins 32 normally urge the holders so that the rolls 11 are held clear of the work. The body 19, Fig. 2, is slidably mounted on a shank 34 attached to the lathe saddle and held against rotation by keys 36. The scroll sleeve 24 is rotatable about the body 19 by a handle 46 to set the rolls 11 to the required working diameter but is normally urged by a spring 47 to a position at which the rolls 11 are freed from engagement with the work. The sleeve 24 is locked in the required position for a given diameter of work by dogs 44 engaging recesses on a rotatably adjustable ring 40 attached to a flange 39 on the shank 34 and held by bolts 41 passing through slots 42 in the ring. Springs 51 under the head of bolts 38 normally retain the dogs 44 in engagement but in operation after the required length of thread has been rolled and the lathe saddle is stopped, continued rotation of the work draws the rolls 11 and body 19 along the shank 34 against the action of the springs 51 until the dogs 44 are disengaged and the rolls released from engagement.
GB2702852A 1952-10-28 1952-10-28 Improvements relating to dieheads for forming screw-threads Expired GB711759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2702852A GB711759A (en) 1952-10-28 1952-10-28 Improvements relating to dieheads for forming screw-threads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2702852A GB711759A (en) 1952-10-28 1952-10-28 Improvements relating to dieheads for forming screw-threads

Publications (1)

Publication Number Publication Date
GB711759A true GB711759A (en) 1954-07-07

Family

ID=10252985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2702852A Expired GB711759A (en) 1952-10-28 1952-10-28 Improvements relating to dieheads for forming screw-threads

Country Status (1)

Country Link
GB (1) GB711759A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149511A (en) * 1960-11-28 1964-09-22 Warren Arthur Percy Thread rolling heads
DE2438937A1 (en) * 1974-08-14 1976-03-04 Harold Habegger Thread rolling head - uses torque applied by work piece onto bearing member
FR2281183A1 (en) * 1974-08-06 1976-03-05 Habegger Harold THREADING TOOL BY LAMINATION
DE2602091A1 (en) * 1975-12-23 1977-07-07 Harold Habegger THREAD ROLLING HEAD
EP1272295A1 (en) * 2000-03-10 2003-01-08 C.J. Winter Machine Technologies, Inc. Thread-rolling end-working attachment
CN101927306A (en) * 2010-09-10 2010-12-29 中铁隆昌铁路器材有限公司 Die matching device and die matching method for three-roll thread rolling machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149511A (en) * 1960-11-28 1964-09-22 Warren Arthur Percy Thread rolling heads
FR2281183A1 (en) * 1974-08-06 1976-03-05 Habegger Harold THREADING TOOL BY LAMINATION
DE2438937A1 (en) * 1974-08-14 1976-03-04 Harold Habegger Thread rolling head - uses torque applied by work piece onto bearing member
DE2602091A1 (en) * 1975-12-23 1977-07-07 Harold Habegger THREAD ROLLING HEAD
EP1272295A1 (en) * 2000-03-10 2003-01-08 C.J. Winter Machine Technologies, Inc. Thread-rolling end-working attachment
EP1272295A4 (en) * 2000-03-10 2005-01-19 C J Winter Machine Technologie Thread-rolling end-working attachment
CN101927306A (en) * 2010-09-10 2010-12-29 中铁隆昌铁路器材有限公司 Die matching device and die matching method for three-roll thread rolling machine

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