Patent ID: 9427840
Filing Date: 2016-08-30
CPC Classification: B24B

Claim Text:
1. A honing tool holder, comprising a body having a mounting element for cooperatively mounting the tool holder on a spindle of a machine tool for rotation therewith about a rotational axis therethrough and for receiving a flow of pressurized fluid from the spindle, and a tool holding element opposite the mounting element configured and operable for cooperatively holding a honing tool for rotation about the rotational axis; and a feed system carried on the body, configured to connect to a feed element of the honing tool held by the tool holding element, the feed system including a biasing element configured and operable to receive the pressurized fluid from the spindle and, in a first state to use the pressurized fluid to hold the feed element in a retracted position, then upon occurrence of a predetermined condition, to use the fluid to automatically direct a feed force against the feed element to urge honing elements of the tool radially outwardly relative to the tool, and apparatus configured and operable to automatically prevent radial movement of the feed element of the honing tool past a limit, the feed system including a release mechanism having a release element disposed within a radial passage within the body and biased by a spring toward a first position eccentrically adjacent to an axial center of the body, and movable in opposition to the spring by a centrifugal force generated by the rotation of the tool holder about the axial center, to a second position radially outwardly of the first position to connect the biasing element to a port for receiving the pressurized fluid.