GB985129A - A machining device - Google Patents

A machining device

Info

Publication number
GB985129A
GB985129A GB4965263A GB4965263A GB985129A GB 985129 A GB985129 A GB 985129A GB 4965263 A GB4965263 A GB 4965263A GB 4965263 A GB4965263 A GB 4965263A GB 985129 A GB985129 A GB 985129A
Authority
GB
United Kingdom
Prior art keywords
sleeve
spindle
lever
spring
moved
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
GB4965263A
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.)
Georg Fischer AG
Original Assignee
Georg Fischer 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 Georg Fischer AG filed Critical Georg Fischer AG
Publication of GB985129A publication Critical patent/GB985129A/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
    • B23G1/22—Machines specially designed for operating on pipes or tubes
    • 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
    • B23G5/00—Thread-cutting tools; Die-heads
    • B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
    • B23G5/10—Die-heads
    • B23G5/12—Die-heads self-releasing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Gripping On Spindles (AREA)

Abstract

985,129. Screwing machine details. GEORG FISCHER A.G. Dec. 16, 1963 [Dec. 21, 1962], No. 49652/63. Heading B3N. A screw thread cutting device comprises a self-opening chuck 2 having thread-cutting means 40 displaceable radially, a rotatable chuck spindle 9 axially displaceable by a lever 25, a part of the chuck arranged to displace the thread-cutting means to the operative position, and braking means arranged to co-operate with the part to cause the displacement when the lever is moved to displace the spindle away from the work. A shaft 4 drives chuck spindle 9 through teeth 8 and a gear 16, the spindle being axially movable in a bearing 10. A sleeve 13 is rotatable with spindle 9 but relative axial movement is provided by a key 12. A second sleeve 50 is fixed to sleeve 13, and a grooved sleeve 56 is rotatable on sleeve 50. A camming sleeve 27 is axially fixed but rotatable on an enlarged end 2 of spindle 9. Sleeve 27 has an annual groove 28 which co-operates with a fixed braking annulus or part annulus 29, and a stepped tube chamfering tool 52 is carried by the spindle. A control shaft 20 is mounted in bearings.21, 22 and carries a fork 23 having rollers 24 mounted thereon. The rollers run in an annular groove 19 in the hub 18 of gearwheel 16. A lever 25 is secured to the shaft and the latter carries a pre-tensioned torsion spring 41. In operation the workpiece is moved into engagement with thread-cutters 40 which are in their closed positions. Lever 25 is moved from the full line position, Fig. 1, towards the left and the screw thread is completed. At this point a pawl 33 releases sleeve 56 and spring 63 rotates sleeve 27 to move cutters 40 outwardly to disengage the work. Spring 41 moves spindle 9 to the right, Fig. 1 and members 27, 29 are engaged, but a spring 41 is relatively weak, the shaft 9 is not stopped. Lever 25 is again moved to the left, Fig. 1, and the work is chamfered by tool 52. Lever 25 is again moved and pressure is exerted on the lever to engage members 27, 29 so that sleeve 27 is braked and the cutters 40 are closed. Sleeve 50 is rotated relative to sleeve 56 so that pawl 33 enters the groove in sleeve 56 and spring 63 is tensioned. In a modification, spring 41 is omitted. Specification 869,354 is referred to.
GB4965263A 1962-12-21 1963-12-16 A machining device Expired GB985129A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1505762A CH398263A (en) 1962-12-21 1962-12-21 Thread cutting device

Publications (1)

Publication Number Publication Date
GB985129A true GB985129A (en) 1965-03-03

Family

ID=4405976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4965263A Expired GB985129A (en) 1962-12-21 1963-12-16 A machining device

Country Status (7)

Country Link
AT (1) AT241234B (en)
BE (1) BE641237A (en)
CH (1) CH398263A (en)
DE (1) DE1527175B1 (en)
ES (1) ES294707A1 (en)
GB (1) GB985129A (en)
LU (1) LU44987A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217492722U (en) 2019-11-01 2022-09-27 米沃奇电动工具公司 Portable pipe thread processing machine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE413877C (en) * 1925-05-18 Geometric Tool Company Trigger device for self-opening cutting heads for screw cutting machines
US1653258A (en) * 1924-11-03 1927-12-20 Frank M Davis Self-opening die for pipe-threading machines
US2292788A (en) * 1940-07-22 1942-08-11 Hill Acme Company Threading machine die head
US2393600A (en) * 1944-07-27 1946-01-29 Hill Acme Company Thread cutting machine
DE1752659U (en) * 1957-05-10 1957-09-19 Fischer Ag Georg SELF-OPENING THREAD TURNING HEAD.
US3041641A (en) * 1959-09-24 1962-07-03 Nat Acme Co Threading machine with collapsible tap having means to permit replacement of cutter bits

Also Published As

Publication number Publication date
CH398263A (en) 1965-08-31
LU44987A1 (en) 1964-02-11
DE1527175B1 (en) 1970-12-23
AT241234B (en) 1965-07-12
ES294707A1 (en) 1964-03-01
BE641237A (en) 1964-04-01

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