Fixing device for circular spot welding of pump impeller blade curved surface

Abstract

The invention relates to a fixing device for pump impeller blade curved surface circumferential spot welding. The fixing device is characterized by comprising a fixing base (1) of a hood structure, the fixing base comprises a cavity (1a), a set of welding through holes (1c) are evenly distributed along the circumference of a bottom board (1b) of the fixing base, a set of positioning pins (3) are evenly distributed on the circumference of the inner wall of the cavity, each positioning pin is matched with the corresponding welding through hole, a circular positioning board (2) is connected to the bottom board (1b), a set of clamping grooves (2a) are evenly distributed in the outer side face of the positioning board, each clamping groove (2a) is matched with the corresponding positioning pin (3), a pressing board (4) is connected to the positioning board (2) in a matched mode through a connecting piece (5), and the pressing board (4) is in press fit with a workpiece in the assembly process. The fixing device has the advantages of being simple in structure, low in cost, convenient to install, fast to use, easy to operate, accurate in positioning, high in working efficiency and applicable to batch production.

Description

technical field [0001] The invention relates to the field of output shaft equipment of a pump wheel of a hydraulic torque converter, in particular to a fixing device for spot welding the circumference of the curved surface of the pump wheel blade. Background technique [0002] The hydraulic torque converter is composed of a pump wheel, a turbine, a guide wheel and other auxiliary components: it is installed between the engine and the gearbox, and uses the hydraulic transmission oil (ATF) as the working medium to transmit torque, change torque, and change speed. role. [0003] Before the pump wheel of the torque converter is assembled, the blades need to be evenly welded on the core ring. At this stage, the direct spot welding method is adopted, and the blades are manually welded to the core ring one by one, or the blades are directly spot welded on the core ring. On the pump wheel shell body, this welding method has the following disadvantages: cumbersome operation, trouble...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of troublesome operation, high labor intensity and low work efficiency in spot welding the circumference of the curved surface of the pump impeller blade at the present stage, and propose a fixing device for the circumferential spot welding of the curved surface of the pump impeller blade.

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