US Patent: 2,140,949
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| Apparatus for Turning Complex Workpieces
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Patentee:
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| Clifford A. Bickel (exact or similar names) - Sidney, OH |
| USPTO Classifications: |
| 82/19 |
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Patent Dates:
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| Applied: |
Oct. 22, 1936 |
| Granted: |
Dec. 20, 1938 |
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Patent Pictures:
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Joel Havens
Monarch Machine Tool Co. History
"Vintage Machinery" entry for Monarch Machine Tool Co.
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Description: |
| Toulmin & Toulmin - patent attorneys
This invention relates to lathes and in particular, to apparatus for turning complex workpieces such as those of non-circular cross section, together with methods for forming such work pieces. One object of this invention is to provide a machine for turning complex work-pieces with the aid of a three-dimensional cam member which not only predetermines the configuration of the work-piece in a given cross sectional plane, but also in other planes along the work-piece. Another object is to provide a machine having mechanism associated therewith and. employing a three-dimensional cam having in a complete revolution a configuration adapted to reproduce a portion only of a revolution in the work-piece, the cam and the work-piece being rotated at different speeds. Another object is to provide such apparatus as that described immediately above, wherein compensating devices are associated with the mechanism whereby the cutting tool is given a compensated motion to allow for the motion of the tool in turning tapered work-pieces, or those having different diameters there along. Another object is to provide apparatus for producing the three-dimensional or "length" cams employed in connection with the turning of objects of irregular cross section. Another object is to provide a machine for producing these three-dimensional cams wherein the configuration transversely is determined by a rotating cam formed from a representative cross section of the work-piece and the longitudinal configuration is obtained by means of a profile member, the combination of these two elements resulting in the three-dimensional cam referred to. Another object is to provide such apparatus as described immediately above, wherein the cross sectional cam and the three-dimensional cam being produced are rotated at different speeds so that the three-dimensional cam will receive, in a complete revolution, but a portion of the configuration of a complete revolution of the cross sectional cam, the necessary compensation for the taper of the work-piece being taken care of by certain compensating mechanism arranged between the cam follower and the cutting tool. Another object is to provide a machine for turning work-pieces of irregular cross section wherein means is provided for elongating the effect of the length or three-dimensional cam by providing the cam with longitudinal motion relatively to the cam follower so that the cam has the effect of a lengthened cam, thereby eliminating the necessity for producing additional cams in order to make work-pieces of greater length but of similar cross section. Another object is to provide apparatus far turning or boring work-pieces which do not have a common cross section from which a cross section can be taken to develop the cross sectional cam; in which case there is provided means for producing a master length cam in which a longitudinal section is taken and developed into 360 degrees or a complete revolution in making the length cam.
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