Cutting by use of rotating axially moving tool – Machine including plural tools – Plural – simultaneously operational tools
Patent
1992-11-27
1994-09-06
Rosenbaum, Mark
Cutting by use of rotating axially moving tool
Machine including plural tools
Plural, simultaneously operational tools
408 48, 408 92, B23B 3500, B23B 4112
Patent
active
053442598
ABSTRACT:
A method and device for drilling holes into a mantle of a cylinder used in a paper machine are disclosed. The drilling device includes a base frame and a spindle box displaceable on support of the base frame towards a cylinder mantle to be machined. The spindle box includes a number of drill bits and a drive motor arranged to move the spindle box to produce a feed movement for the drill bits. In the spindle box, a second motor is arranged to rotate the drill bits simultaneously. The rotating drive of the drill bits is obtained by means of the second motor which rotates a drive belt arranged to pass via drive pulleys of the drill bits so that the drive pulleys and drill bits are rotated. Each drill bit comprises a horizontally displaceable slide frame. Coupling devices are arranged between each displaceable slide frame and the spindle box, by means of which each slide frame can be locked in the desired horizontal position so as to adjust the positions of the drill bits.
REFERENCES:
patent: 3246544 (1966-04-01), Cooper
patent: 3822958 (1974-07-01), Lewis
patent: 4185943 (1980-01-01), Hautau
patent: 4674925 (1987-06-01), Thornton et al.
patent: 5090846 (1992-02-01), Hakala et al.
Parviainen Seppo
Rajala Kari
Hansen Kenneth J.
Rosenbaum Mark
Valmet Paper Machinery Inc.
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