The blank machining allowance is important in modern industrial production. In the design of equipments and molds, the influence of blank machining allowance on the production and quality of the workpiece often determines the success or failure of these items. Therefore, management, technical personnel and other personnel in the production site must pay attention to the selection and management of blank machining allowance.
Blank machining allowance is a technical parameter which can ensure the size precision when processing the workpiece. It is the allowable deviation range of size between the size of the machined surface after the blank is machined and the size requirements of the drawing. In the actual production process, the blank machining allowance is determined according to the type, material, accuracy and surface roughness requirements of the workpiece. Generally speaking, the value of blank machining allowance has a great influence on the size and surface roughness, and usually, the smaller the machining allowance is, the higher the accuracy and surface roughness of the finished product are.
The choice of blank machining allowance is an important factor affecting the production cost and quality of the workpiece. On one hand, if the deviation is too small and the blank machining allowance is insufficient, it will cause the workpiece to fail to meet the technical requirements. On the other hand, if the deviation is too large and the blank machining allowance is more than necessary, it will cause the increase of the production cost, increased scrap rate and other problems. Therefore, it is important to select the appropriate blank machining allowance when setting the machining allowance.
The selection of blank machining allowance involves advanced calculation and comprehensive consideration, which requires professional and experienced personnel to take part in the calculation. When setting the machining allowance of the blank, it is necessary to refer to the data of the workpiece materials, cutting parameters and production plan, and to consider the size, accuracy and surface roughness requirements of the parts. In addition, the experience of skilled workers can also help to make reasonable blank machining allowance.
In modern industry, the selection and management of blank machining allowance has become an important link in the production and quality assurance of the workpiece, and the selection of blank machining allowance directly affects the production quality and cost. Therefore, it is necessary to pay attention to the choice and management of blank machining allowance. Professional personnel should be selected to carry out the calculation. At the same time, the experience of skilled personnel should be used to make reasonable setting of blank machining allowance.
