Cutting apparatus for a noncircular cross section

Details Cutting apparatus for a noncircular cross section Cutting apparatus for a noncircular cross section

B - Operations, Transporting

23

B

90/29

B23B 5/24 (2006.01) G05B 19/18 (2006.01)

Patent

CA 1315576

ABSTRACT OF THE DISCLOSURE A cutting apparatus is provided for forming a noncircular cross-section on a workpiece that includes a tool advancing and retreating device. The tool advancing and retreating device includes a central shaft on which is to be mounted a tool, a journal for supporting the central shaft, a movable plate fixed to the central shaft, and electromagnets positioned opposite to one another such that the movable plate is interposed between the electromagnets with a clearance between the plate and the electromagnets. The journal that supports the central shaft includes a mount and a plurality of leaf springs which are secured to the central shaft and to a holder. The holder is also secured to the mount. A device is provided for detecting the rotational angle of the main shaft and a displacement sensor is included for detecting the longitudinal displacement of the central shaft. A speed sensor detects the speed of the longitudinal displacement of the central shaft and an arrangement is provided for controlling the electric current passing through the electromagnets based on the output signals from the rotational angle detecting device, from the displacement sensor and from the speed sensor.

601324

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