GB108687A - Improvements in Apparatus for Milling Screw Threads. - Google Patents
Improvements in Apparatus for Milling Screw Threads.Info
- Publication number
- GB108687A GB108687A GB541816A GB541816A GB108687A GB 108687 A GB108687 A GB 108687A GB 541816 A GB541816 A GB 541816A GB 541816 A GB541816 A GB 541816A GB 108687 A GB108687 A GB 108687A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cutter
- spindle
- work
- sleeve
- screw
- 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
- B23G1/32—Thread cutting; Automatic machines specially designed therefor by milling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Drilling, And Turning Of Wood (AREA)
Abstract
108,687. Hopkinson, A. Oct. 13, 1916. Milling screws.-In apparatus for milling screw threads, the annularly grooved milling-cutter is carried on a rotary spindle which is eccentrically or radially adjustable to bring the cutter to or from the work and a secondary rotary and longitudinal movement is imparted to cause it to traverse the surface of the work. Figs. 1 and 2 show the cutter headstock, the work being carried on a separata headstock. A sleeve C is rotated by a worm-wheel c and worm c<1> which can be driven by hand or by power through a clutch c<2>. This clutch can be put in and out of gear by hand and can be put out of gear automatically on the completion of one revolution of the sleeve C by a tappet c' operating the lever C<2>. The cutter is carried by a spindle b which is mounted eccentrically in a carrier D which again is mounted eccentrically in the sleeve C. The carrier D has secured to it a ring D<2> by which it can be rotated to bring the tool up to the work and give the depth of feed required and is then locked to the sleeve C by a screw in a slot d<3>. The cutter spindle b is driven by a belt pulley P and is fed forward to cut a screw by a screwed ring E of the pitch required engaging a screw cut in the headstock or, as shown, in a hand-wheel G locked by a spring-stop. In one modification, provision is made for adjusting the bearings of the cutter spindle to allow for spring in the spindle or wear of the cutter. In another modification, the carrier D is oscillated by a lever actuated by a cam and a spring to provide for backing-off when screwing a tap. In a further modification, the cutter spindle is provided with a bearing beyond the cutter. This bearing is removed when the cutter is engaged on internal work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB541816A GB108687A (en) | 1916-10-13 | 1916-10-13 | Improvements in Apparatus for Milling Screw Threads. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB541816A GB108687A (en) | 1916-10-13 | 1916-10-13 | Improvements in Apparatus for Milling Screw Threads. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB108687A true GB108687A (en) | 1917-08-23 |
Family
ID=32481808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB541816A Expired GB108687A (en) | 1916-10-13 | 1916-10-13 | Improvements in Apparatus for Milling Screw Threads. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB108687A (en) |
-
1916
- 1916-10-13 GB GB541816A patent/GB108687A/en not_active Expired
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