Method and apparatus for refinishing grooves in rollers
AssigneeJ. M. Voith GmbH
InventorsTheodor Bahr, Alfred Hoerner, Heinz Keck
Life of this patent
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Abstract
A method and apparatus for refinishing or recutting grooves formed on the outside of rollers, especially rollers employed in paper making machines. The grooves are provided to facilitate drainage of water from a watery web carried by a felt entrained about the grooved roller. The grooves in such rollers can become obstructed by foreign matter and can decrease in depth as the roller wears and must occasionally be refinished or recut to provide for maximum water drainage.
Claims9
In an apparatus for refinishing a helical groove of a grooved roll, especially a roll for a papermaking machine;
- a slide guided for movement along a path parallel to the axis of a roll and having means for being driven along said path at a speed conforming substantially to the lead of the groove as the roll rotates, a cutter support on the slide adapted to receive a cutter disc which is engageable with the groove of the roll for refinishing the groove, interengaged guide elements on the slide and support guiding said support on said slide for free movement of the support on the slide in a direction parallel to said path, and clamp means operatively interposed between the slide and the support and selectively operable for locking the support to the slide.
A method of refinishing a helical groove in a roll which comprises;
- supporting a slide for movement along a path parallel to the axis of the roll, mounting a support on the slide for free floating movement thereon within predetermined limits in a direction parallel to said path, mounting a cutter on the support, engaging the cutter in the groove to refinish the groove during rotation of the roll, rotating the roll, driving the slide along said path at a speed substantially equal to the lead of the groove multiplied by the speed of rotation of the roll while permitting the support to float on said slide in a direction parallel to said path, detecting when said support moves on said slide to one of said predetermined limits, and halting said slide when said support moves thereon to one of said predetermined limits.
Dependencies are inferred from the claim text.