JPWO2022259412A5 - - Google Patents

Description

The painted surface correcting device disclosed in the present application includes a correcting tool and a pressing mechanism that presses the correcting tool while following the painted surface of the crankshaft. It consists of an arc-shaped concave portion larger than the concave portion and a groove portion formed on the concave portion and having a width smaller than the diameter of the coating location, and by moving the coated surface, the convex portion of the coated surface is removed by the concave portion and the groove portion. Characterized by

An upper central hole 56 and a lower central hole 58 are formed at both ends of the crankshaft 50 for use in machining and for supplying oil. Further, a drive groove 57 is formed on the outer side of the upper center hole 56 . The upper center hole 56 is used to engage the rotation drive device 30 , and the lower center hole 58 is used to engage the rotation support device 20 , thereby supporting the crankshaft 50 from both sides and rotating the drive groove 57. It is configured to rotate the crankshaft 50 by being attached to the drive portion of the drive device 30 .

Claims (12)

A correction tool includes a pressing mechanism that presses the correction tool while following the painted surface of the crankshaft, and the correction tool has an arc-shaped recess whose cross section perpendicular to the axis of the crankshaft is larger than the diameter of the painted area. It is characterized by comprising a groove formed on the recess and having a width smaller than the diameter of the painted area, and by moving the painted surface, the convex part of the painted surface is removed by the recess and the groove. A painted surface correction device. 2. The painted surface repairing apparatus according to claim 1, further comprising a rotation drive means for rotating the crankshaft, and moving the painted surface by rotating the crankshaft with the rotation drive means. 3. The painted surface repairing device according to claim 2, wherein the repairing tool is driven in accordance with the rotation of the crankshaft while being pressed by the pressing mechanism. The painted surface repairing device according to any one of claims 1 to 3, wherein the groove is formed parallel to the axial direction together with the recess. The painted surface repairing device according to any one of claims 1 to 4, wherein the surface of the recessed portion has a ten-point average roughness Rz of 1.0 μm or less. The painted surface correction device according to any one of claims 1 to 5, wherein an end portion of the recessed portion is formed in a tapered shape. The painted surface repairing device according to any one of claims 1 to 6, wherein the groove has an arcuate cross section perpendicular to the axis of the crankshaft. The painted surface repairing device according to any one of claims 1 to 6 , wherein the groove has a rectangular cross section perpendicular to the axis of the crankshaft. The painted surface repair device according to any one of claims 1 to 8, wherein the convex portion of the painted surface is removed by an edge portion formed at a boundary between the recessed portion and the groove portion of the repair tool. . The painted surface repairing device according to claim 9, wherein the edge portion extends over the entire axial direction of the painted area. According to claim 9 or 10, the pressing mechanism brings the edge portion into close contact with the painted surface by bringing the recess into contact with the painted surface and biasing it with a predetermined reaction force of a spring. Painted surface correction device described. A method for manufacturing a rotary compressor, comprising correcting a painted surface of a crankshaft of a rotary compressor using the painted surface modifying device according to any one of claims 1 to 11.