US 6,595,096 B2 · Blade and motor carrier with height/angle adjustment mechanism

Abstract

A machine tool has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The position of the cutting tool with respect to the working surface is controlled by a mechanism which elevates the cutting tool with respect to the working surface and angulates the cutting tool with respect to the working surface. The cutting tool is mounted to a support plate which is pivotably attached to the work table. The elevating mechanism includes a threaded rod and a nut which engages a pivoting link. The pivoting link also engages the cutting tool. Rotation of the threaded rod pivots the link which in turn raises and lowers the cutting tool. A spring biases the cutting tool towards its lower position to remove play between the components. The angulating mechanism includes a lever, two cams and a locking rod. Rotation of the lever moves the locking rod longitudinally due to the action between the two cams. The longitudinal movement of the rod compresses the support plate between the work table and a bracket to maintain the position of the support plate with respect to the work table. Also included is an integral arbor wrench which is accessible when the throat plate is removed to lock the arbor to facilitate tool changing. The wrench is designed to not allow reassembling of the throat plate when the wrench is in engagement with the arbor shaft.

Claims23

Dependent claims

A saw comprising:

a work table for supporting a workpiece, the work table having a substantially horizontal surface defining a slot;
a base supporting the work table, the base and the work table defining an internal cavity;
a support plate disposed below the work table within the internal cavity, the support plate being pivotally attached to the work table and being disposed along a plate plane intersecting the horizontal surface, the support plate being pivotable between a first position and a second position;
a motor supported by the support plate;
a cutting tool rotatably supported by the support plate and driven by the motor, the cutting tool extending from the internal cavity through the slot in the work table and being disposed along a tool plane substantially parallel to the plate plane of the support plate, the cutting tool forming a first angle with respect to the horizontal surface when the support plate is in the first position, the cutting tool forming a second angle with respect to the horizontal surface when the support plate is in the second position, the second angle being different than the first angle;
a bearing block connected to the support plate;
and
a first bevel stop cam rotatably supported by the base, the first bevel cam stop defining a spiral surface;
wherein the first position of the support plate is defined by contact between the spiral surface of the first bevel stop cam and the bearing block.

6 more elements

Dependencies are inferred from the claim text.

Blade and motor carrier with height/angle adjustment mechanism

Life of this patent

Blade and motor carrier with height/angle adjustment mechanism

Life of this patent

Abstract

Claims23