Clamp special for machining pump body of marine water-jet propulsion pump

Abstract

The invention discloses a clamp special for machining a pump body of a marine water-jet propulsion pump. The clamp comprises a clamp body. The clamp body is a quadrilateral plate body. A round locating pin and an annular round groove are sequentially arranged on the clamp body from the center to the outside. A diamond locating pin with the long diameter being parallel to the tangent line of the annular round groove is arranged at the position, close to the annular round groove, of the lower left corner of the clamp body. A U-shaped hinge pedestal parallel to the right end face of the clamp body is arranged at the position, away from the annular round groove, of the upper right corner on the same diagonal line with the lower left corner of the clamp body. A turnover plate which is composed of a long plate and a short plate and has an inverted-L-shaped section is arranged in a groove of the hinge pedestal and connected with the groove in a hinged mode through a pin shaft. A threaded hole is formed in the long plate of the turnover plate, and a locating screw is mounted in the threaded hole. Pressing plates are arranged on the clamp body and are in bilateral symmetry. The clamp special for machining the pump body of the marine water-jet propulsion pump is simple in structure, high in locating precision, low in manufacturing cost, capable of rapidly clamping workpieces and convenient to operate, and greatly improves the work efficiency.

Description

technical field [0001] The invention relates to a jig for processing a pump body, and more particularly relates to a jig specially used for processing a pump body of a ship water jet propulsion pump, which belongs to the technical field of mechanical processing. Background technique [0002] The ship water jet propulsion pump is the core component of a special ship propulsion device. Its working principle is to propel the ship to run through the reaction force of the water jetted by the water jet propulsion pump. Compared with the conventional propeller propulsion method, it has fast propulsion speed, high efficiency, strong anti-cavitation performance, low vibration and noise, excellent maneuverability, and is suitable for shallow water navigation, which is more and more sought after by the market. [0003] The water jet propulsion pump is a device for ship propulsion. On the end face of the pump body, positioning holes and installation holes for controlling the ship's forw...

AI Technical Summary

Problems solved by technology

[0004] To sum up, there are two main difficulties in processing the pump body of the water jet propulsion pump: 1. The nominal size of the installation holes at both ends of the pump body where the main shaft is positioned is very different, and the requirements for dimensional accuracy and coaxiality are high; 2. The position accuracy of the hole between the two ends of the pump body is required to be high, so the processing is difficult

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