Production process of automobile hub fastening component

Abstract

The invention relates to a production process of an automobile hub fastening component. According to the production process of the automobile hub fastening component, the production flow and the process are improved, the quality of the finished fastening component is improved, and the production efficiency is improved. A sawing device in production equipment is used for sawing a cylindrical blankto cut the blank into studs with the same length; a cold heading device carries out upsetting and forging on the studs to form nuts at the end parts of the studs; a thread rolling device carries out thread rolling on the studs to make the studs be bolts; and the combination assembly mechanism automatically assemble the bolts and bushings and washers together in a sleeve mode. According to the production process of the automobile hub fastening component, the lengths of the bolt sawed materials are consistent, an upsetting and forging mechanism can be accurately lubricated, normal operation of the upsetting and forging mechanism is not influenced, lubricating oil can be recycled, the bolt rolled thread quality and efficiency are improved, the bolts can be orderly collected after thread rolling is finished, manual material taking is facilitated, the labor is saved, and the working efficiency and the finished product quality are improved.

Description

technical field [0001] The invention relates to a production process of an automobile wheel hub fastening assembly. Background technique [0002] Automobile hub fastening components are mainly made of cold-rolled steel stamping parts with good stamping and welding process through assembly and welding. The welding production batch is large, the production speed is fast, and the assembly and welding accuracy of the welded parts is high, and flow operation is mostly used The production method is high in mechanization and automation. As one of the main parts of assembly, welding bolts are produced in a huge amount. [0003] Before the fastening component is manufactured, the cylindrical blank needs to be cut into short cylinders, put into the chamfering machine for chamfering, and then the short cylinder is cold-headed, and then the cold-headed cylindrical material is rolled with a thread rolling device , followed by heat treatment and surface treatment, and finally the thread-...

AI Technical Summary

Problems solved by technology

[0004] However, due to the backward technology of the previous automobile wheel fastening components, high-quality products cannot be obtained, and there are many defects in the previous production equipment:

[0005] There is no special feeding mechanism in the sawing device, and it is sent to the sawing position by the conveying roller of the conveying track, and then the front and rear clampers clamp the cylindrical blank for sawing, so the length of the sawing material is difficult to control, and the length of the bolts is not uniform. Affect the quality of the finished product; the traditional cold heading device needs to manually add lubricating oil to the upsetting mechanism during the working process, which is time-consuming and labor-intensive, and is occasionally forgotten, resulting in unsmooth operation of the machine; there are also equipment used to lubricate the upsetting mechanism. Lubricating oil, but when the equipment is filled with lubricating oil, the filling pipe cannot reach the position that needs to be lubricated at the lower end of the upsetting mechanism, which affects the normal operation of the machine; in addition, after the lubricating oil is added to the machine, some lubricating oil will drip, and a small amount Seep out from the machine, thus causing waste of lubricating oil; in the past bolt rolling equipment, the bolts move on the guide rail, and then the bolts are pushed into the movable thread rolling plate and the fixed rolling thread plate by the pushing device for extrusion Friction, the bolts on the guide rail are closely arranged in rows. Since there is no blocking device, when the pushing device pushes, the bolts are easy to be pushed together, and it is easy for multiple bolts to be pushed out at the same time, or the bolts are stuck. Therefore, the thread rolling quality and efficiency of the bolts are affected; in addition, the bolts after the thread rolling are directly dropped into the collection box, and there is a large amount of lubricating oil on the bolts in the collection box, which requires frequent manual removal and cleaning. The amount is large, time-consuming and labor-intensive; in the past, the assembly of the bolt set bushing and the washer needs to be done manually, the workload of the set is very large, and a lot of manpower is required. Common, affects the quality of finished products

Images