Electric heating – Metal heating – By arc
Patent
1980-03-03
1981-09-08
Rubinson, Gene Z.
Electric heating
Metal heating
By arc
219121LU, 219121LY, 219121L, 266 57, 266 61, 269 73, 83411R, B23K 2608
Patent
active
042886805
ABSTRACT:
Apparatus for cutting notches in the outer surface of a cylindrical drum includes a machine frame, and a laser cutting set which provides a laser beam to cut the notches in the drum. The notches are provided to allow sheet steel strips to be later fitted on the drum, and thus form a cutting tool useful in the production of collapsible box blanks. The apparatus also includes a movable carriage for supporting the laser cutting set, and a mounting shaft is supported by the carriage for rotatably supporting the drum. A drive wheel, coaxially fitted to the mounting shaft, rotates the shaft, and the drive wheel has an engagement surface which corresponds to a cutting edge diameter later defined by the positions which the cutting edges of the steel strips assume beyond the outer circumferential surface of the drum. An elongated guide member fixed to the machine frame contacts the engagement surface of the drive wheel and rotates the drive wheel together with the drum when the carriage is moved relative to the guide member. Accordingly, particular notches to be cut by the laser beam in the outer surface of the drum transversely of the drum axis will each be of a length such that the desired lengths of the cutting edges of the steel strips will be provided when the strips are fitted in those notches.
REFERENCES:
patent: 3226527 (1965-12-01), Harding
patent: 3330547 (1967-07-01), Powers
patent: 3350088 (1967-10-01), Schott
patent: 3535778 (1970-10-01), Falanga et al.
patent: 3612814 (1971-10-01), Houldcroft
patent: 3619550 (1971-11-01), Matthews
patent: 4039799 (1977-08-01), Stumpf
Paschall M.
R & S Stanzformen GmbH
Rubinson Gene Z.
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