Blade and motor carrier with height/angle adjustment mechanism
First Claim
1. A cutting machine comprising:
- a work table defining a work surface;
a cutting tool positionable with respect to said work surface of said work table;
a mechanism for positioning said cutting tool relative to said work surface of said work table, said mechanism comprising;
a support plate pivotably secured to said work table, said cutting tool being movably mounted to said support plate to move between a first position where said cutting tool extends through an aperture in said work table and above said work surface and a second position where said cutting tool is positioned below said work surface;
a cutting tool angulating mechanism mounted to said support plate, said angulating mechanism being operable to pivot said support plate with respect to said work table such that said cutting tool angulates with respect to said work surface; and
a bracket attached to said work table and positioned adjacent to a rear side of said support plate;
wherein said cutting tool angulating mechanism includesa locking rod attached to said support plate and extending through said work table and between a front side and said rear side of said support plate, said locking rod extending through said bracket and including an adjustment device disposed adjacent said bracket,a locking arm attached to said locking rod and movable between a first position and a second position;
a bearing block cam attached to said support plate, anda locking arm cam attached to said locking arm, said locking arm cam being in sliding contact with said bearing block cam and cooperating with said bearing block cam to compress said support plate between said locking arm and said adjustment device and to frictionally engage said support plate with said bracket when said locking arm is in said second position to lock said support plate and said cutting tool in a desired angular position; and
said cutting machine further comprisinga cutting tool elevating mechanism attached to said support plate and in engagement with said cutting tool, said elevating mechanism being operable to move said cutting tool between said first and said second positions.
1 Assignment
0 Petitions
Accused Products
Abstract
A cutting machine 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 and frictionally engages the support plate against a work table 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.
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Citations
15 Claims
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1. A cutting machine comprising:
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a work table defining a work surface; a cutting tool positionable with respect to said work surface of said work table; a mechanism for positioning said cutting tool relative to said work surface of said work table, said mechanism comprising; a support plate pivotably secured to said work table, said cutting tool being movably mounted to said support plate to move between a first position where said cutting tool extends through an aperture in said work table and above said work surface and a second position where said cutting tool is positioned below said work surface; a cutting tool angulating mechanism mounted to said support plate, said angulating mechanism being operable to pivot said support plate with respect to said work table such that said cutting tool angulates with respect to said work surface; and a bracket attached to said work table and positioned adjacent to a rear side of said support plate;
wherein said cutting tool angulating mechanism includesa locking rod attached to said support plate and extending through said work table and between a front side and said rear side of said support plate, said locking rod extending through said bracket and including an adjustment device disposed adjacent said bracket, a locking arm attached to said locking rod and movable between a first position and a second position; a bearing block cam attached to said support plate, and a locking arm cam attached to said locking arm, said locking arm cam being in sliding contact with said bearing block cam and cooperating with said bearing block cam to compress said support plate between said locking arm and said adjustment device and to frictionally engage said support plate with said bracket when said locking arm is in said second position to lock said support plate and said cutting tool in a desired angular position; and
said cutting machine further comprisinga cutting tool elevating mechanism attached to said support plate and in engagement with said cutting tool, said elevating mechanism being operable to move said cutting tool between said first and said second positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification