Fracturing pump connecting rod machining datum marking method

Abstract

The invention discloses a fracturing pump connecting rod machining datum marking method which comprises the following steps that S1, a connecting rod body is placed on a plane, the first flatness of the plane where a rod body is located is measured, and it is guaranteed that the first flatness is 1 mm or below by machining the surface of the rod body; s2, the plane where the rod body is located is aligned, the second flatness of the area, except the coating, of the top face of the large end of the connecting rod is measured, the area, except the coating, of the top face of the large end of the connecting rod is machined, and it is guaranteed that the second flatness is 2 mm or below; and S3, the position, 10 mm close to the rod body, of a transition circular bead where the rod body is connected with the small end of the connecting rod serves as the starting position, a center line is drawn in the vertical direction according to the design requirement of a connecting rod body, the plane where the rod body is located and the area, except the coating, of the top face of the large end of the connecting rod serve as the follow-up alignment reference, and the center line serves as the follow-up machining reference. Smooth manufacturing of the fracturing pump connecting rod can be guaranteed, the rejection rate is reduced, and the manufacturing cost is saved.

Description

technical field [0001] The invention relates to the technical field of mechanical processing of connecting rods, in particular to a method for marking a standard for processing connecting rods of fracturing pumps. Background technique [0002] The fracturing pump is an important equipment for fracturing, acidizing operations and increasing oil and gas production in the oil field. It is in a complex mechanical environment such as heavy load and variable load. Its movement and the rationality of the load directly affect the working performance of the fracturing pump. The rod is the moving part that transmits power at the force end of the fracturing pump. During work, it is subjected to alternating loads such as tension, compression and bending, and the pulsation of the fluid in the pump. Therefore, the strength of the connecting rod must meet the requirements during processing. [0003] In the actual processing process, the tolerance of the non-machined surface contour of the ...

AI Technical Summary

Problems solved by technology

The main problem is serious bending at the junction between the big end of the connecting rod and the connecting rod body, and the overall distortion of the connecting rod. In order to solve the contradiction between the large deformation of the casting and the extremely high tolerance requirements for the non-machined surface contour, we invented a machining benchmark for the fracturing pump connecting rod Line method

Images