GB586145A - Improvements relating to lathes - Google Patents
Improvements relating to lathesInfo
- Publication number
- GB586145A GB586145A GB1536344A GB1536344A GB586145A GB 586145 A GB586145 A GB 586145A GB 1536344 A GB1536344 A GB 1536344A GB 1536344 A GB1536344 A GB 1536344A GB 586145 A GB586145 A GB 586145A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- spindle
- tool
- stop
- nut
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
586,145. Lathes. AVIMO, Ltd., and STEVENS, H. C. M. Aug. 11, 1944, No. 15363. [Class 83 (iii)] [Also in Group XXIII] In a lathe in which a rotary tool spindle is carried by a pivoted arm slidable by means of a lead screw and the depth of cut controlled by a stop on the arm co-operating with a stationary abutment, a slidable housing interconnected with the arm carries a nut which is movable into and out of engagement with the lead screw, a catch securing the nut in its operative condition and means being provided for releasing the catch in response to pivotal movement of the tool-carrying arm. A thread-milling or grinding wheel z is carried at the end of a spindle y mounted in an arm x. The arm is fastened to a bar u rotatable and slidable in guides on the machine frame. A housing 1, also connected to slide with the bar u, carries an electric motor w for driving the tool-spindle and houses a split nut n. The latter is engaged with a lead screw k driven through gearing i from the work spindle b by means of a hand lever fastened to a spindle p; but may be disengaged automatically when an operation is completed by a stop 9 on the lower end of the arm x striking a rod t and thus moving a retaining catch which normally holds the nut-halves closed against spring pressure applied to the operating handle. In a screw-threading operation on a workpiece e, the arm x is initially positioned by means of a stop 11, depth of cut is determined by drawing the arm towards the workpiece by a handle 4 against the tension of a spring 3 until an adjustable abutment 5, Fig. 3, springs into engagement with an adjustable abutment 6; on reaching the end of this abutment the arm and tool are withdrawn from the work and the stop 9 then operates to stop the feed movement. A supplementary tool spindle 12 is provided axially opposite the work and may carry endfacing cutters 13. Feed of the tool is by hand-lever 14 and linkage 15 adapted to give quick movement up to the work and slow feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1536344A GB586145A (en) | 1944-08-11 | 1944-08-11 | Improvements relating to lathes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1536344A GB586145A (en) | 1944-08-11 | 1944-08-11 | Improvements relating to lathes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB586145A true GB586145A (en) | 1947-03-07 |
Family
ID=10057838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1536344A Expired GB586145A (en) | 1944-08-11 | 1944-08-11 | Improvements relating to lathes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB586145A (en) |
-
1944
- 1944-08-11 GB GB1536344A patent/GB586145A/en not_active Expired
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