Measures for Effective Prevention of Automotive Parts and Components

2019-09-20 08:53:50

Sheet metal parts are thin and easy to form. They can be formed into parts of various shapes. With the application of welding, assembling and riveting technology, it is possible to realize multi-structure of products. At the same time, these characteristics make sheet metal parts more or less deformed in the process of processing, such as bending deformation, torsion deformation, concave-convex deformation and so on. These deformations make the size or shape of the whole component change, resulting in quality problems. However, the production process of sheet metal parts has its inherent law. For the same type of products, according to the existing equipment, manpower, etc., the order of processing can be flexibly adjusted, and reasonable processing technology can be given. So choosing the right technological route is an effective measure to prevent and solve this kind of problem.

The formulation of technological route must be combined with the shape of the product and the existing processing equipment of the company to meet the requirements of product quality and ultimately achieve the goal of economic benefits. The formulation of general process route for automobile stamping parts can follow the following principles: (1) satisfying product quality requirements; (2) economic process route; (3) providing optimization for subsequent processes; (4) convenient processing. The quality considerations of technicians come from the mastery of product structure, function and appearance, as well as the proficiency of equipment processing ability. Considering the accumulative error matching relationship of the whole machine, optimizing product processing methods to reduce the processing difficulty, and setting relatively stable process routes in batch production are three directions to be considered in process planning.

The optimization of processing method lies in the adjustment of its processing sequence or the improvement of its process. A simple example is given to illustrate the optimization. For example, the quality and time of a door panel can be taken into account when processing a single piece of door panel. The general technological scheme is as follows: cutting of the shear machine, punching shape of the punch and inner hole, bending of the bending machine, welding four corners. Such a process plan saves time and effort, but if large-scale production of punch tool damage will be aggravated, greatly increasing the maintenance cost of machine tools.

In addition, if there is a slight problem in the programming of automobile sheet metal parts, it will cause irreparable losses. Because the function of this kind of door plate is to install door suction, the following processing schemes are usually adopted in mass production of this kind of door plate: cutting machine (three door suction pieces are cut separately)punching hole_cutting angle_folding machine folding_welding four corners and three door suction pieces. The improvement of this scheme not only saves the cost of raw materials and equipment maintenance, but also greatly reduces the error rate of programming.

The processing technology of sheet metal automobile parts is a complicated problem. This paper briefly expounds the basic principles of process setting for general sheet metal parts in order to find out the basic methods of process setting. In a word, as an engineer, we should set up the concept of cost, integrate cost into process, and view the process of process setting from the overall perspective.