Patent ID: 8215212
Filing Date: 2012-07-10
Classification: B23B,Y10T

Abstract:
1. A hub-mounted on-vehicle disk brake lathe that attaches to a wheel hub of a vehicle in order to machine a brake disk mounted on the wheel hub while the brake disk remains attached to the wheel hub and rotates about a wheel hub axis, the brake lathe comprising: a spindle shaft rotating about a spindle axis; a hub mount which attaches to the wheel hub of the vehicle on which the brake disk is mounted, said hub mount having a plurality of passages to accept wheel fasteners passing therethrough to secure said hub mount to the wheel hub, thereby supporting the lathe on the wheel hub; an alignment mechanism operably connected between said spindle shaft and said hub mount so as to position the lathe relative to the wheel hub and being operable to align said spindle axis with respect the wheel hub axis to reduce misalignment of said spindle axis relative to the wheel hub axis and thereby reduce motion of the lathe relative to the wheel hub which would otherwise introduce lateral runout into the machined brake disk; a lathe body having a pair of spindle bearings in which said spindle shaft is rotatably mounted; a motor for driving said spindle shaft, said motor having a motor shaft that rotates about a motor axis; a right-angle gearbox having, a motor mount for mounting said motor with respect to said right-angle gearbox such that said motor axis is aligned with said input shaft axis; a power take-off element attached to said gearbox output shaft; a spindle power input element attached to said spindle shaft; a flexible drive linkage that operably connects said power take-off element to said spindle power input element so as to cause said spindle shaft to be driven by rotation of said gearbox output shaft; a cutting head movably engaged to said lathe body so as to allow tool bits mounted on said cutting head to cuttably engage the brake disk; and a feed mechanism for directing the tool bits across the disk along a feed path as the disk rotates.