GB296088A - Improvements in semi-automatic lathes for threading gudgeon pins - Google Patents
Improvements in semi-automatic lathes for threading gudgeon pinsInfo
- Publication number
- GB296088A GB296088A GB23703/28A GB2370328A GB296088A GB 296088 A GB296088 A GB 296088A GB 23703/28 A GB23703/28 A GB 23703/28A GB 2370328 A GB2370328 A GB 2370328A GB 296088 A GB296088 A GB 296088A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- cam
- chuck
- ejector
- 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
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
Abstract
296,088. Gache, C. P., and Paris, H. V. Aug. 25, 1927, [Convention date]. Screwing; chucks.-A screwing-machine particularly for screwing the ends of gudgeon pins has a hollow spindle chuck automatically operated by a push spindle and containing an ejector. The chuck closing mechanism and the ejector are controlled by cams on a shaft driven through a clutch controlled by lever mechanism from the lever fed tailstock carrying the die-bead. The tailstock 5 is adjustable, on the bed 1 according to the length of the work, the collar 30 for the lever feed being also adjustable for this purpose. The collar 20 is adjustable to determine the length threaded. A cam 22 on the die-head 21 actuates through linkage 27 a rock shaft 32 having a lever 34 keyed to it and provided with a finger 38 for actuating a second lever 35. An abutment 39 supports the lever 34 against lateral thrust when in operation. The levers control a clutch for transmitting drive to a cam shaft controlling the chuck lever 63 and ejector lever 65. On actuation by the cam 22 both levers 34, 35 are actuated and their pins are withdrawn from an inclined groove 47 and an axial groove 48, Fig. 4, respectively. Springs 50 now force the clutch 45, 46 into engagement and the gearing 49 becomes operative to drive a cam 53 at half the speed of the shaft 40. By the time the cam 22 has released the levers the member 46 has rotated sufficiently to prevent the pins from reengaging with the grooves in it. Towards the ends of a revolution the pin on the lever 34 drops into the groove 47 and further rotation of the clutch then effects its disengagement, the pin on the lever 35 then dropping into the groove 48. The cams 54, 55 are so arranged that on one hali revolution the chuck is closed and on the next half revolution tl e chuck is opened and the ejector actuated. On the return of the tailstock spindle a roller on a bell crank lever 87, Fig. 1, engages a fixed cam to re-set the self-opening diehead.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR296088X | 1927-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB296088A true GB296088A (en) | 1929-03-14 |
Family
ID=8888143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23703/28A Expired GB296088A (en) | 1927-08-25 | 1928-08-17 | Improvements in semi-automatic lathes for threading gudgeon pins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB296088A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2621346A (en) * | 1948-10-27 | 1952-12-16 | Perfection Pipe Nipple Company | Semiautomatic pipe nipple threading machine |
-
1928
- 1928-08-17 GB GB23703/28A patent/GB296088A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2621346A (en) * | 1948-10-27 | 1952-12-16 | Perfection Pipe Nipple Company | Semiautomatic pipe nipple threading machine |
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