Automatic grinding attachment for saw grinders
OwnerTerry A. Moteinventor
Life of this patent
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Abstract
Apparatus for converting a manually operated machine for grinding saw blades into automatic operation; including a first hydraulic cylinder for connection to the grinding wheel carriage assembly for reciprocation thereof, a second hydraulic cylinder for connection to a saw blade for incremental rotation thereof, and an electromechanical control circuit for sequencing the operation of the cylinders to automatically position and grind each of a plurality of teeth on a saw blade.
Claims24
An apparatus for automatically grinding circular saw blades, comprising
- (a) a table
- (b) a pedestal attached to said table for holding said saw blade in horizontal position;
- (c) a carriage assembly including a saw grinding wheel, said assembly attached to said table and movably slideable to bring said grinding wheel in and out of grinding contact with said saw blade;
- (d) an electromagnet positioned to contact said saw blade
- (e) first linear motion means connected between said table and said carriage assembly for movably sliding said carriage assembly;
- (f) second linear motion means connected between said table and said saw blade for incrementally rotating said saw blade on said pedestal;
- (g) a first limit switch for detecting a predetermined motion of said second linear motion means, and thereby activating said first linear motion means and simultaneously energizing said electromagnet;
- (h) a second limit switch for detecting a predetermined motion of said first linear motion means, and thereby activating said second linear motion means and simultaneously deenergizing said electromagnet;
- and
- (i) means for disabling said first and second linear motion means after a predetermined number of activations of each.
In a saw grinding machine of the type for sharpening circular saw blades by manually positioning a carriage assembly having thereon a grinding wheel, and manually incrementally rotating said saw blade for sharpening a plurality of saw teeth, the improvement by way of converting said machine to automatic operation, by the addition of only two linear motion devices, comprising:
- (a) a first linear motion device for automatically reciprocating said carriage assembly between a first and second limit position;
- (b) a second linear motion device for incrementally rotating said saw blade by a predetermined angular position;
- (c) electromagnet means for contacting said saw blade;
- (d) first control means responsive to said carriage assembly first limit position to actuate said second linear motion device for incrementally rotating said saw blade and to simultaneously deenergize said electromagnet means;
- and
- (e) second control means responsive to the predetermined angular position of said second linear motion device for incrementally rotating for actuating said first linear motion device for automatically reciprocating said carriage assembly and simultaneously energizing said electromagnet means.
Dependencies are inferred from the claim text.