Analysis of the steps of Dongguan sheet metal processing
The sheet metal processing production process refers to the entire process of making products from raw materials (or semi-finished products). For the production of machinery, including the transportation and preservation of raw materials, the preparation of production, the manufacture of blanks, the processing and heat treatment of parts, the assembly and commissioning of products, paints and packaging. The content of the production process is very extensive. Modern enterprises use the principles and methods of systems engineering to organize production and guide production, and regard the production process as a production system with input and output. It can make the management of the enterprise scientific and make the enterprise more resilient and competitive.
In the sheet metal processing production process, the process of directly changing the shape, size and performance of the raw material (or blank) into a finished product is called a process. It is a major part of the production process. For example, casting, forging and welding of blanks; heat treatment for changing material properties; machining of parts, etc., are all processes. The process is in turn composed of one or several sequential processes. In order to process a qualified part, the thickness of the layer of metal that must be cut from the blank is called the machining allowance. The machining allowance can be further divided into process margin and total margin. The thickness of the layer of metal that needs to be removed in a certain process is called the processing allowance of the process. The total amount that needs to be cut off from the blank to the finished product is called the total remaining amount, which is equal to the sum of the residuals of the respective surfaces of the corresponding surface. The purpose of leaving the machining allowance on the workpiece is to remove the machining error and surface defects left in the previous process, such as the chill layer, the pores, the sand layer on the surface of the casting, the scale, the decarburization layer, and the surface crack on the surface of the forging. , internal stress layer and surface roughness after cutting. Thereby improving the accuracy and surface roughness of the workpiece.
In the same process, the workpiece may have to be installed several times. The part of the process that the workpiece performs in one setup is called installation. In the process 1, there are two installations. First installation: Clamp the outer circle with a three-jaw chuck, the end face of the car C, the inner hole of the hole, the inner hole chamfering, the outer circle of the car. The second installation: the head is clamped to the outer circle with a three-claw disk, the end faces of the car are A and B, and the inner hole is chamfered. The size of the machining allowance has a great influence on the processing quality and production efficiency. Excessive machining allowance not only increases the labor of machining, reduces productivity, but also increases material, tool and power consumption, and increases processing costs. If the machining allowance is too small, it will not eliminate the various defects and errors of the previous process, and it will not compensate for the clamping error during the processing of this process, resulting in waste. The principle of selection is to make the margin as small as possible under the premise of ensuring quality. In general, the more finished, the smaller the process margin.
Information Sources:
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
The sheet metal processing production process refers to the entire process of making products from raw materials (or semi-finished products). For the production of machinery, including the transportation and preservation of raw materials, the preparation of production, the manufacture of blanks, the processing and heat treatment of parts, the assembly and commissioning of products, paints and packaging. The content of the production process is very extensive. Modern enterprises use the principles and methods of systems engineering to organize production and guide production, and regard the production process as a production system with input and output. It can make the management of the enterprise scientific and make the enterprise more resilient and competitive.
In the sheet metal processing production process, the process of directly changing the shape, size and performance of the raw material (or blank) into a finished product is called a process. It is a major part of the production process. For example, casting, forging and welding of blanks; heat treatment for changing material properties; machining of parts, etc., are all processes. The process is in turn composed of one or several sequential processes. In order to process a qualified part, the thickness of the layer of metal that must be cut from the blank is called the machining allowance. The machining allowance can be further divided into process margin and total margin. The thickness of the layer of metal that needs to be removed in a certain process is called the processing allowance of the process. The total amount that needs to be cut off from the blank to the finished product is called the total remaining amount, which is equal to the sum of the residuals of the respective surfaces of the corresponding surface. The purpose of leaving the machining allowance on the workpiece is to remove the machining error and surface defects left in the previous process, such as the chill layer, the pores, the sand layer on the surface of the casting, the scale, the decarburization layer, and the surface crack on the surface of the forging. , internal stress layer and surface roughness after cutting. Thereby improving the accuracy and surface roughness of the workpiece.
In the same process, the workpiece may have to be installed several times. The part of the process that the workpiece performs in one setup is called installation. In the process 1, there are two installations. First installation: Clamp the outer circle with a three-jaw chuck, the end face of the car C, the inner hole of the hole, the inner hole chamfering, the outer circle of the car. The second installation: the head is clamped to the outer circle with a three-claw disk, the end faces of the car are A and B, and the inner hole is chamfered. The size of the machining allowance has a great influence on the processing quality and production efficiency. Excessive machining allowance not only increases the labor of machining, reduces productivity, but also increases material, tool and power consumption, and increases processing costs. If the machining allowance is too small, it will not eliminate the various defects and errors of the previous process, and it will not compensate for the clamping error during the processing of this process, resulting in waste. The principle of selection is to make the margin as small as possible under the premise of ensuring quality. In general, the more finished, the smaller the process margin.
Information Sources:
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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