Spindle unit, table unit, and machine tool

摘要

A spindle unit having a tilt shaft for rotating and tilting a spindle head so that a posture of a spindle changes including: the spindle head rotatably supporting the spindle, a tool being attached to a front end of the spindle; a spindle head support having a mutually separated pair of side walls, the spindle head support supporting the spindle head between the pair of side walls in a rotatable and tiltable manner; two power transmission mechanisms provided along the pair of side walls of the spindle head support for transmitting rotational drive power to the tilt shaft; and two drive source devices of the tilt shaft provided between the pair of side walls, the output shafts of the drive source devices being arranged to face the side walls and being connected to the power transmission mechanisms.

主权项

1. A spindle unit having a tilt shaft for rotating and tilting a spindle head so that a posture of a spindle changes,
the spindle unit comprising: the spindle head rotatably supporting the spindle, a tool being attached to a front end of the spindle; a spindle head support having mutually separated first and second side walls, the spindle head support supporting the spindle head between the first and second side walls in a rotatable and tiltable manner; first and second power transmission mechanisms provided along the first and second side walls of the spindle head support, respectively, the first and second power transmission mechanisms transmitting rotational drive power to the tilt shaft; and first and second drive source devices provided between the first and second side walls of the spindle head support, respectively, the first and second drive source devices outputting rotational drive power of the tilt shaft, wherein an output shaft of the first drive source device being arranged to face the first side wall and being connected to the first power transmission mechanism, wherein an output shaft of the second drive source device being arranged to face the second side wall and being connected to the second power transmission mechanism, and wherein the first and second drive source devices being arranged in parallel with the output shafts of the first and second drive source devices offset from each other.