Method for manufacturing stainless steel tail gas pipe of car, and automatic cutter for cutting stainless steel pipe

Abstract

A technology for manufacturing the stainless steel pipe used as the tail gas pipe of car includes examining raw material, shearing, welding to become pipe, drawing, pressure test, washing, annealing, straightening, sizing, cutting off, straightening, reducing diameter, sizing, cutting off, washing and refining. Its automatic cutter is composed of machine frame, base plate, fixature, small bearing holder and pressing plate, intermediate bearing holder, rotary plate, abrasive dis, and its mainshaft, motor, sizing unit, etc. The finished pipe features high size precision, smooth surface, and hith uniformity in hardness.

Description

technical field [0001] The invention relates to a manufacturing method of a stainless steel automobile exhaust pipe. Background technique [0002] With the development of society, the requirements for automobile exhaust emissions have gradually increased, that is, automobile exhaust emissions must meet the requirements of environmental protection. Automobile exhaust pipe is an important part of automobile exhaust gas purifier. The existing stainless steel automobile exhaust pipe is a stainless steel thin-walled pipe. It is made by cutting to length, cleaning, drying, and finishing the finished product. The existing problems are inaccurate size, poor inner and outer surface brightness, uneven hardness, uneven austenitization and many burrs, serious welding, and poor finish. . In addition, the stainless steel pipe cutting machine used in the fixed-length cutting is composed of a frame, a base plate arranged on the frame, a clamping body installed on the base plate, and an u...

AI Technical Summary

Problems solved by technology

The existing stainless steel automobile exhaust pipe is a stainless steel thin-walled pipe, which is cut by strip cutting, welded pipe, wall reduction and diameter reduction, coil pressure detection and cleaning, annealing, straightening and length cutting, straightening, process shrinking, Cutting to length, cleaning, drying, and finishing the finished product. The existing problems are inaccurate size, poor inner and outer surface brightness, uneven hardness, uneven austenitization and more burrs, serious open welding, and poor finish.

In addition, the stainless steel pipe cutting machine used when cutting to length is composed of a frame, a bottom plate arranged on the frame, a clamping body installed on the bottom plate, and an upper cover plate of the clamping body arranged above the clamping body. , the connecting rod connected with the upper cover plate of the clamping body, the foot pedal arranged at the lower end of the connecting rod, the spring arranged on the connecting rod, the grinding wheel arranged on the bottom plate and above the clamping body, installed on the frame The motor, the pulley and belt connected between the output shaft of the motor and the main shaft of the grinding wheel, the fixed size body installed on the frame corresponding to the position in front of the clamping body, and the spring arranged between the motor bottom plate and the frame, the cutting machine The problem is that the structure is complex, and the clamping degree of the workpiece and the feed speed of the grinding wheel are manually controlled. Therefore, the clamping degree of the workpiece is not easy to control, the feed speed of the grinding wheel is uneven, the cutting quality is affected, and the production efficiency is low.

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