Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1986-10-29
1988-11-22
Hall, Carl E.
Metal working
Method of mechanical manufacture
With testing or indicating
29240, 29723, 295251, 29906, 376260, 376263, B23Q 1722
Patent
active
047855207
ABSTRACT:
Process and device for locating the ideal screwing position of bolts of large dimensions wherein a bolt (10) is lowered under control until it engages in the tapping recess of an orifice (5), the bolt (10) is rotated in the opposite direction to screwing, the point of engagement of the threads (11) of the bolt (10) in the threads of the tapped orifice (5) is detected, screwing is started under control by the rotation of the bolt in the normal direction, successive seizures are detected during the screwing, and after each seizure the ideal screwing position is located by means of a suitable path from the center corresponding to the preceding stop previously recorded, screwing is resumed after each detection of the new ideal screwing center, and the screwing of the bolt (10) is continued at a high speed until the end of screwing is detected.
REFERENCES:
patent: 3824674 (1974-07-01), Inoyama et al.
patent: 3851906 (1974-12-01), Frisch et al.
patent: 3984006 (1976-10-01), Takeyasu et al.
patent: 4048687 (1977-09-01), Kato et al.
patent: 4620450 (1986-11-01), Yamaguchi
patent: 4667389 (1987-05-01), Hasha
patent: 4675967 (1987-06-01), Okada
Bourdonne Jean-Claude
Briand Alain
Framatome
Hall Carl E.
Rawlins Andrew E.
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