Cam-controlled boring bar

Details Cam-controlled boring bar Cam-controlled boring bar

1984-02-03

1986-03-18

Vlachos, Leonidas

Turning

Radially moving rotating tool inside bore

Tool simultaneously moving axially

82 19, 408158, 408181, B23B 29034, B23B 326

Patent

active

045760683

ABSTRACT:
A cam-controlled boring bar system (100) includes a first housing (152) which is rotatable about its longitudinal axis (154), and a second housing in the form of a cam-controlled slide (158) which is also rotatable about the axis (154) as well as being translatable therealong. A tool-holder (180) is mounted within the slide (158) for holding a single point cutting tool. Slide (158) has a rectangular configuration and is disposed within a rectangularly configured portion of the first housing (152). Arcuate cam slots (192) are defined within a side plate (172) of the housing (152), while cam followers (194) are mounted upon the cam slide (158) for cooperative engagement with the cam slots (192). In this manner, as the housing (152) and slide (158) rotate, and as the slide (158) also translates, a through-bore (14) having an hourglass configuration will be formed within a workpiece (16) which may be, for example, a nuclear reactor steam generator tube support plate.

REFERENCES:
patent: 2382571 (1945-08-01), Kylin
patent: 2804786 (1957-09-01), Stenger
patent: 3228265 (1966-01-01), Stoddard et al.
patent: 3813969 (1974-06-01), Wheeler
patent: 3854839 (1974-12-01), Gottelt
patent: 4354305 (1982-10-01), Plummer et al.
patent: 4357846 (1982-11-01), Primo

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