Cutting by use of rotating axially moving tool – Tool or tool with support – Having inversely angled cutting edge
Patent
1977-07-28
1978-10-31
Combs, E. M.
Cutting by use of rotating axially moving tool
Tool or tool with support
Having inversely angled cutting edge
408 63, 408130, B23G 1100, B23Q 526
Patent
active
041225724
ABSTRACT:
In an automatic screw thread cutting machine having a clamping carriage for clamping an elongated workpiece, one end portion of which is to be provided with a screw thread, and a spindle coaxially arranged with a workpiece held by said clamping carriage and carrying at one end thereof facing the end portion of the workpiece a screw cutting tool and being driven over a stepdown gearing from a motor, an advancing mechanism for advancing the clamping carriage towards said spindle and including a rod connected to the carriage and having a pair of opposite smooth parallel friction surfaces and a friction wheel driven by the spindle and pressed against one of the friction surfaces while the other friction surface is engaged by a counter roll. The friction wheel is exchangeble against a friction wheel of different diameter to thereby change the speed of advancement of the carriage.
REFERENCES:
patent: 1444109 (1923-02-01), Clay
patent: 1460088 (1923-06-01), Wilson
patent: 2051052 (1936-08-01), Morgan
patent: 2514775 (1950-07-01), Mackintosh
patent: 3071989 (1963-01-01), Timm
Combs E. M.
Kieserling & Albrecht
Striker Michael J.
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