GB362320A - Improvements in or relating to screw-cutting machines - Google Patents
Improvements in or relating to screw-cutting machinesInfo
- Publication number
- GB362320A GB362320A GB13892/31A GB1389231A GB362320A GB 362320 A GB362320 A GB 362320A GB 13892/31 A GB13892/31 A GB 13892/31A GB 1389231 A GB1389231 A GB 1389231A GB 362320 A GB362320 A GB 362320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- lever
- arm
- pivoted
- screwing
- 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
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
- B23G1/12—Machines with a toothed cutter in the shape of a spur-gear or the like which is rotated to generate the thread profile as the work rotates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
362,320. Screwing dies and dieheads. SOIRON, M., 368, Rue St. Gilles, and SOC.-ANON. DES BOULONNERIES DE LI—GE ET DE LA BLANCHISSERIE, 14, Rue St. Vincent, both in Liege, Belgium. May 11, 1931, No. 13892. Convention date, May 10, 1930. [Class 83 (iii).] In a self-opening die-head screwing machine, tangential chasers c<2>, Fig. 2, are carried by pivoted carriers c rocked about pivots b by blocks k which are mounted on pins j attached to a rotary plate f<1>, Fig. 3. The plate is secured to a ring f which is rotatable to open and close the head by means of blocks h thereon riding in helical slots g in a sleeve d slidably keyed at e to the head a. The plate, which bears against a collar a<2> on the head, is flush with the projecting end a<1> of the head and fits the end accurately in order to exclude cuttings, lubricant, &c. An annular groove v on the sleeve d receives rollers u, Fig. 1, on a yoke-lever n pivoted at o and carrying at its lower end a link p which, together with an arm q pivoted to the machine at q<3>, forms a toggle. In operation, as the workholding saddle t is retracted after a screwing operation a lug s thereon engages a stop r<2> on a rod r connected by an arm q<4> to the arm q so as to rock the latter and straighten the toggle, a shoulder q<2> on the arm q limiting the motion thereof at a position slightly past the dead centre and locking the lever n in the die-closed position. During screwing, a second lug s<1> on the saddle compresses a spring 5 against a collar 5a on a rod z pivoted at n<2> to the lever n, the operation continuing until the lug s engages a second stop r<1> on the rod r, whereupon the toggle is broken and the spring 5 rocks the lever n rapidly to open the die-head. The pivot o of the lever n is arranged on a nut w adjustable along a screw x by means of a hand-wheel x<1> to vary the adjustment of the head, a pointer w<1> and scale y<3> indicating the set position. This construction enables the head to be adjusted without stopping its rotation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE362320X | 1930-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB362320A true GB362320A (en) | 1931-12-03 |
Family
ID=3868447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13892/31A Expired GB362320A (en) | 1930-05-10 | 1931-05-11 | Improvements in or relating to screw-cutting machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB362320A (en) |
-
1931
- 1931-05-11 GB GB13892/31A patent/GB362320A/en not_active Expired
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