US Patent: 2,143,255
|
| Lathe
|
|
Patentee:
|
|
| Philber A. Abe (exact or similar names) - Sidney, OH |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Jul. 27, 1935 |
| Granted: |
Jan. 10, 1939 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
Monarch Machine Tool Co. History
"Vintage Machinery" entry for Monarch Machine Tool Co.
|
|
Description: |
| Toulmin & Toulmin - patent attorneys
This invention relates to lathes, and in particular, to apparatus for automatically controlling the operations of tools in turning articles of various configuration. One object of my invention is to provide apparatus for controlling the motions of a machine tool automatically, whereby the tool first rapidly traverses into the position where it engages the work; then feeds longitudinally for a predetermined distance; then rapid traverses out for a predetermined distance; and finally, rapid traverses back to its starting point. Another object is to provide such apparatus, as described immediately above, but wherein the tool is caused to move longitudinally a predetermined distance; then transversely another predetermined distance; then longitudinally a third predetermined distance and so on until a plurality of stepped portions have been cut on the lathe, the tool returning to its starting point by a rapid traverse motion after the last stepped portion has been cut. Another object is to provide apparatus for automatically controlling the operation of a machine tool, wherein the tool rapid traverses inward a predetermined distance; then feeds inward beyond this point for another predetermined distance; and then moves In the previously described manner longitudinally forward, transversely outward, and longitudinally backward to the starting point. Another object is to provide apparatus for automatically controlling the motions of a machine tool, wherein the tool is caused to feed inwardly for a predetermined distance; then to feed longitudinally in one direction for another predetermined distance; then transversely outward for another predetermined distance; and finally longitudinally in the opposite direction to the starting point, preferably by a rapid traverse motion. Another object is to provide a lathe having means for rapidly traversing the tool inwardly for a predetermined distance; then for causing the tool to execute a series of transverse and longitudinal movements so as to cut several stepped portions upon the work; then to rapid traverse or feed the tool outwardly until a predetermined position has been reached; and finally to cause the tool to execute a rapid traverse movement back to the starting point. Another object is to provide a lathe of the type described above, wherein a rear carriage operates in cooperation with a front carriage having the, previously described movements. Another object is to provide a lathe having means for causing a front tool to feed inwardly for a predetermined distance; then to feed longitudinally for another predetermined distance; then to rapidly traverse outwardly to a predetermined position; then to hold the front tool motionless while a rear tool feeds inwardly into the work and executes its cutting stroke; whereupon both the front tool and the rear tool simultaneously rapid traverse back to their starting points. Another object is to provide a lathe of the type described in the preceding paragraph, but wherein one of the tools is caused to "dwell" at the end of its feeding or cutting stroke so as to completely cut away the work and overcome the "spring" W and surface roughness of the material, after which the rapid traverse movement of the tool takes place, in the previously described manner. Another object is to provide a double tool lathe, wherein means is provided for rapidly traversing the front tool inwardly toward the work for a predetermined distance; thereafter feeding the tool inwardly for another predetermined distance; then feeding the tool longitudinally in one direction either by a continuous path or by a step-like path, as previously described; then feeding or rapidly traversing the front tool outward to a predetermined position, where it holds temporarily; then causing the rear tool to feed inwardly and accomplish its cuttlng-away stroke; and then finally to cause both the front tool and the rear tool to rapid traverse back to their respective starting points. Another object is to provide a lathe having a series of micrometer stops arranged to operate a switch or switches so as to enable the cutting of stepped workpieces without the necessity of depending upon follower switches sliding on templates, or having running contact with micrometer heads. Another object is to provide lathes of the previously described types, wherein a single-voltage electrical circuit is employed for operating the various magnetic clutches, switches and relays instead of the two-voltage circuits previously used, thereby greatly simplifying the machine and reducing the cost of manufacture. Another object is to provide means in such a lathe to "inch" or "jog" the tool toward or from the work by manually controlled devices. Another object is to provide such a lathe having electrical means whereby the rapid traverse outward feed apparatus may be employed for a rapid traverse inward feed by means of devices for rearranging the circuit at the option of the operator. Another object is to provide a micrometer stop arrangement for operating limit switches employed in connection with lathes of the previously described types, whereby the tool is caused to halt and change its direction at predetermined points in its cycle of operations.
|
|
