Application of High Speed Milling Technology in Automobile Mould Manufacturing
Abstract
High speed milling technology can be used in automobile mould manufacturing for its great advantages, such as high machining accuracy, short cutting time, low energy consumption and low noise. High speed milling technology consists of three major parts: tooling, drive system and control system. Tooling is composed of milling cutter, spindle, flange and other parts with various shapes and sizes according to different materials and processes; drive systems consist of two or four axes of numerically controlled machine tool motors, spindle boxes and other driving parts; control systems are related to controlling device, servo system, shaft encoder and other parts to complete the whole machine Control. In order to ensure the accuracy of high speed milling of automobile moulds, pay attention to the design of tooling, drive and control systems, reasonable selection of chip removal system, structural optimization of machine tools, reasonable selection of cutting parameters, choice of cutting fluid, reasonable design of cutting tool and cutting process, etc. These can ensure the high-speed and high-precision cutting quality and edge quality of the mould.
Keywords: high speed milling technology, automobile mould manufacturing, tooling, drive system, control system
1 Introduction
Due to the development of modern science and technology, the application technology of automobile mould manufacturing and processing is becoming more and more extensive and perfect. High speed milling technology, as a new advanced processing technology, is widely used in automobile mould manufacturing and processing because of its great advantages, such as high machining accuracy, short cutting time, low energy consumption, low noise, wide range of processing and processing capacity and other advantages[1].
High speed milling technology is a kind of high efficient and high precision machining technology, which can improve the working efficiency and reduce the manufacturing cost, and can meet the high machining accuracy and surface quality requirements of high precision parts in automobile mould manufacturing.
2 High speed milling technology of automobile mould
2.1 Principle
High speed milling technology is a kind of processing technology which has achieved great success in automobile mould manufacturing and processing and can meet the requirements of high machining accuracy and machining efficiency. The mechanical working principle and process requirements of high-speed milling are: using appropriate cutting tools, setting machining parameters according to the requirements of the workpiece and process, and transmitting power to the tools to achieve the purposes of cutting, drilling, reaming and other processes on the surface of the workpiece[2].
2.2 Tooling
The tooling of high speed milling technology consists of three main parts: milling cutter, spindle and flange. The type, shape and size of these parts are determined according to the material and processing methods of the workpiece. With the development of CNC technology, the structure of tooling is more and more perfect and the function is more and more powerful.
2.3 Drive system
The drive system of high speed milling technology consists of two or four axes of CNC machine tool drives, spindle boxes and other driving parts. The spindle box is used to connect the drive shaft of the spindle, and the spindle and the drive shaft are connected through the bearing. The drive shaft is driven by the servo motor, and the servo motor can control the speed and position of the spindle and ensure the accuracy of the machining parts.
2.4 Control system
The control system of high speed milling technology consists of controlling device, servo system, shaft encoder and other monitoring parts. The controlling device is the core of the entire control system, which is responsible for receiving signals from various monitoring parts and sending commands to the servo motor. The servo system is used to convert the position signal of the spindle into electrical signals, and the shaft encoder is used to detect and detect the position, speed and acceleration of the spindle.
3 Precautions for high speed milling technology of automobile mould
3.1 Design of tooling, drive and control systems
In the high speed milling process of automobile moulds, appropriate tooling, drive systems and control systems should be adopted according to the requirements of the workpiece and process. Adjusting the parts of the tooling, drive systems and control systems according to the characteristics of the material of the workpiece can ensure the accuracy and efficiency of the machining parts.
3.2 Reasonable selection of cutting tool
In the high speed milling process of automobile moulds, tools with different cutting materials and geometric shapes should be selected according to the machining accuracy and material characteristics of the workpiece. Reasonable selection of cutting tools can ensure the processing accuracy of automobile moulds and the high-efficiency cutting of hard materials.
3.3 Chip removal system
The chip removal system of high speed milling technology is an important part of it. Reasonable selection of chip removal methods and equipment can improve the cutting performance and working efficiency. In the process of automobile moulds, chip removal system should be used according to the characteristics of the material and the precision requirements of the workpiece.
3.4 Structural optimization of machine tools
In order to ensure the stability and accuracy of high speed milling process of automobile moulds, attention should be paid to the structural optimization of machine tools. The size, shape and other parameters of machine tools should be designed reasonably and correctly according to the characteristics of the machining process.
3.5 Reasonable selection of cutting parameters
In the high speed milling process of automobile moulds, different kinds of cutting parameters should be selected according to different materials. Feed speed, cutting speed, spindle speed and other parameters should be selected reasonably, which can improve the processing quality and machining efficiency.
3.6 Reasonable choice of cutting fluid
In the process of high speed milling of automobile moulds, additives should be selected properly for different materials and processes to form cutting fluid. Reasonable use of cutting fluid can effectively reduce the cutting force, reduce the temperature and prolong the service life of cutting tools.
3.7 Reasonable design of cutting tool and cutting process
The cutting tools used in the high speed milling process of automobile moulds should be designed reasonably according to the characteristics of the material and process. In addition, the cutting process should be designed reasonably to ensure the accuracy and efficiency of the machining parts.
Conclusion
High speed milling technology is widely used in automobile mould manufacturing and processing because of its great advantages. In order to ensure the accuracy of high speed milling of automobile moulds, attention should be paid to the design of tooling, drive and control systems, reasonable selection of chip removal system, structural optimization of machine tools, reasonable selection of cutting parameters, choice of cutting fluid, reasonable design of cutting tool and cutting process, etc.
