During EDM machining, the copper electrode and the workpiece are respectively connected to the two poles of the pulse power supply. The pulse voltage applied to the copper electrode and the workpiece generates spark discharge. The instantaneous temperature of the discharge can be as high as 10,000 degrees Celsius, and the high temperature makes the surface of the workpiece partially vaporized or melted.
There are many reasons for the deformation of aluminum components, which are related to the material, the processing tool, the shape of the part, and the processing equipment. There are mainly the following aspects: The deformation caused by the internal stress of the blank, the deformation caused by the cutting force and the cutting heat, and the deformation caused by the clamping force.
The development of three-dimensional design software provides conditions for low-cost, short-period, and design of positioning fixtures. And it can simulate CNC machining parts for verification. Figure 1 shows a typical metal part with an angle of 45° to the YZ and ZX planes:
The machining of micro parts is also called micro electromechanical system or micro system. It is a micro device or system that can be produced in batches, integrating micro mechanisms, micro sensors, micro actuators, and signal processing and control circuits, even peripheral interfaces, communication circuits and power supplies.
Machining of aluminum parts and its process. Configure the milling parameters. Select the tool.
1 Machining aluminum: what it is
1.1 Characteristics of aluminum for machining
2 Aluminum parts machining process
2.1 Tools for machining aluminum: considerations
3 Professional aluminum machining
I was in the workshop and asked myself what is important when milling aluminum in order to get perfect parts.
So I started researching, rolling through books and searching half the internet. I have summarized everything I could find about aluminum milling in this article.
What should you watch out for when milling aluminum?
It is unethical to “talk about precision without the actual CNC machine tool”. If it is said that “the precision of a five-axis CNC machine tool will definitely be higher than that of a three-axis CNC machine tool”, then it is completely on paper. It is entirely possible that high-end three-axis machine tools have a higher machining accuracy index than ordinary five-axis machine tools.
The 3-axis machine tool contains three linear axes, X, Y, and Z,
5-axis CNC machining method and machine tool. As early as the 1960s, the foreign aviation industry had begun to use it in order to process some large workpieces with continuous smooth and complex free-form surfaces, but it has not been widely used in more industries. Only in the past 10 years has there been rapid development. The main reason is that there are many difficulties in five-axis machining, such as:
Complex contours appear in tool and mold manufacturing, and are mass-produced products. Before the emergence of CNC machine tools, forging dies and dies used in the automotive industry were mainly manufactured by hand. After the 1970s, CNC machine tools have been widely used in tool and mold manufacturing. The basic contours of complex profiles are usually processed by milling, and the surrounding CNC machine tools are initially set to three-axis linkage.
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