Method of coating annular surfaces
OwnerAlfred S. Howard, William Selesnickinventors
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Abstract
A machine and method are disclosed which provide an efficient means for coating the annular surfaces on a plurality of workpieces. The workpieces are moved relative to a gun which sprays a coating material. As each workpiece passes within the spray, the gun moves alternately back-and-forth such that the center of the spray follows the curvature of the annular surface. Simultaneously, the workpiece rotates so that the entire surface is coated. The machine is provided with a camming mechanism for moving the gun, one motor for driving the camming mechanism, another motor for rotating the workpieces, and a series of belt and chain drives for synchronizing the motion of the gun with the movement of the workpieces.
Claims15
A method of coating annular surfaces on a plurality of workpieces each having an annular surface, which comprises:
- a. producing a relative translational component of motion between an array of workpieces and a spray of a coating material by which each workpiece passes individually within the spray with the annular surface to be sprayed facing the point of origin of the spray;
- b. simultaneously relatively moving the point of the spray and the workpieces back-and-forth in a plane generally parallel to the plane of motion of step (a) and in synchronization with the motion of step (a) so that the path of the spray follows a portion of the curvature of each of the annular surfaces as the surface passes within the spray;
- c. rotating the workpieces through at least one revolution while each workpiece is within the spray;
- and
- d. spraying each workpiece with the coating material.
A method of coating annular surfaces on a plurality of workpieces each having an annular surface, which comprises:
- a. passing the workpieces individually beneath a spray of coating material with the annular surfaces to be sprayed facing the point of origin of the spray;
- b. simultaneously moving the point of the spray back-and-forth in a direction substantially perpendicular to the direction in which the workpieces are passed, the back-and-forth movement synchronized with the movement of the workpieces so that the centerline of the spray follows the curvature of the annular surface and bisects each annular surface into equal annular surface areas;
- c. rotating the workpieces through at least one revolution while each workpiece is beneath the spray;
- and
- d. spraying each workpiece with the coating material.
A method of coating annular surfaces on a plurality of workpieces each having an annular surface, which comprises:
- a. moving an array of workpieces relative to a spray of a coating material by which each workpiece passes individually within the spray with the annular surface to be sprayed facing the point of origin of the spray;
- b. simultaneously moving the point of the spray back-and-forth relative to the workpieces in a plane generally parallel to the plane of motion of step (a) and in synchronization with the motion of step (a) so that the path of the spray follows a portion of the curvature of each of the annular surfaces as that surface passes within the spray;
- c. rotating the workpieces through at least one revolution while each workpiece is within the spray;
- and
- d. spraying each workpiece with the coating material.
Dependencies are inferred from the claim text.