US 4,904,840 AGranted

Auger flight welder

OwnerDavid Fidelmaninventor

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Abstract

An apparatus for rebuilding the worn outermost edge of a flight of an auger section by depositing a continuous bead of weld material along the extent of that edge. Attached to a support frame is chuck means for releasably grasping opposite ends of the auger section and holding it horizontally so that it may be driven in rotation about its longitudinal axis, and a guide rail affixed to the frame to extend above and parallel to the auger axis. A carriage assembly is mounted to move freely along the rail and includes a carriage plate mounted for vertical movement; which plate has a follower wheel with a grooved rim, mounted to its lower end. This wheel is adapted to ride an upper portion of the auger flight and to thereby vertically support the carriage plate and to urge it in horizontal movement as the auger is rotated. The carriage plate also adjustably mounts the welding head of an arc-welder including an automatically fed welding wire that is aligned with the flight edge. This arrangement allows the welding head to deposit a continuous bead along the flight edge as the auger section is rotated.

Claims14

Dependent claims

Welding apparatus for continuously applying a bead of weld material along the outer edge of a flight of an auger section, comprising:

a. main support frame having attached thereto means for releasably supporting the opposite ends of said auger section and holding said section horizontally for rotation about its longitudinal axis;
b. means mounted to said frame for driving said auger in rotation;
c. guide rail attached to said frame and disposed above said auger section and extending in a direction parallel to said auger section axis;
d. traveller mounted to said rail for horizontal movement therealong;
e. carriage mounted to said traveller for guided free movement in a vertical direction;
f. free-turning follower wheel having a grooved rim and mounted to said carriage, said rim adapted to receive the outer edge portion of said auger flight and said wheel engagable with an upper portion of said flight so as to vertically support said carriage and to vertically follow said flight edge, and said wheel cooperating with said flight edge portion when said auger section is rotated to propel said carriage and traveller in horizontal movement;
and
g. arc-welding means including a welding head adjustably mounted to said carriage and including a welding tip held in alignment with said flight edge when said carriage is supported on said flight.

5 more elements

Dependencies are inferred from the claim text.