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公开(公告)号：US3532412A
公开(公告)日：1970-10-06
申请号：US3532412D
申请日：1969-01-17
Applicant: IBM
Inventor： MILLER ROBERT C
CPC classification number: G06K19/022 , Y10S359/90
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公开(公告)号：US3531035A
公开(公告)日：1970-09-29
申请号：US3531035D
申请日：1968-08-02
Applicant: IBM
Inventor： MAYNARD KENNETH B , MILLER ROBERT C
CPC classification number: B65H23/32 , B65H23/048 , B65H23/24 , B65H2301/4491 , B65H2406/111 , B65H2513/106 , B65H2220/02
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公开(公告)号：US3514099A
公开(公告)日：1970-05-26
申请号：US3514099D
申请日：1968-06-11
Applicant: IBM
Inventor： MILLER ROBERT C , SHERER JOHN H JR
CPC classification number: G06K13/06
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公开(公告)号：US3601928A
公开(公告)日：1971-08-31
申请号：US3601928D
申请日：1969-10-01
Applicant: IBM
Inventor： MILLER ROBERT C
CPC classification number: G06K19/022
Abstract: The position of a rapidly rotating tool relative to a work surface is very precisely controlled by driving the tool from a shaft that is eccentrically supported within bearings. The shaft and hence tool are movable in an arcuate path toward and away from the surface by gear means that can effect minute variations in rotative position of the bearings and hence in depth of penetration of the surface. A servo unit controls the gear means as necessary to maintain actual load on the tool equal to a predetermined load that corresponds to a desired position of the tool relative to the work surface. Actual load is sensed by a signal proportional to the rectified voltage corresponding, for example, to the input current to one phase of a three-phase motor that powers the tool; and desired position (depth of penetration) of the tool corresponds to a reference voltage predetermined to provide that position taking into account the physical characteristics of said surface. The actual position (depth of penetration) of the tool is sensed. The motor automatically is shut off if actual depth is low when actual load is high, indicating dulling of the tool.
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