Importance

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Abstract

A brake lathe for drum and disc rotor brakes for grinding the inside cylindrical surface of a brake drum and machining the opposite parallel surfaces of a disc rotor. The lathe includes rotating spindle output shaft extending along an axis of the lathe housing. The spindle is driven by a motor which translates an endless belt over a V-belt pulley. A pair of cog belts respectively connect an intermediate pulley to the V-belt pulley and a taper lock bushing mounted on the spindle shaft. This arrangement reduces the motor speed to the desired spindle output speed and eliminates the need for an idler shaft. A first cross-feed slide is mounted in a direction transverse to the axis of the brake housing on a first side thereof for advancing the inboard and outboard cutters toward and away from the opposite parallel surfaces of a disc rotor concentrically mounted on the output shaft. A second cross-feed slide is mounted adjacent the axis of the housing and parallel thereto on the opposite side of the housing relative to the first slide and is adjustable from the first side of the housing. The second slide advances its cutter against the inside surface of the brake drum visible from the first side of the housing. Accordingly, an operator need not lean over the axis of the housing when adjusting the depth of cut of the brake drum.

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First Claim