The production of the handboard model shall go through the cutting process, which can be divided into at least three types:
Roughing, semi finishing, finishing, and sometimes even super finishing (mainly for high-speed cutting applications). Of course, residual milling is prepared for finishing after semi finishing. It is important to leave a evenly distributed gap for the next step in each process. If there is little rapid change in the direction of tool paths and workloads, tool life can be extended and more predictable. If possible, finish machining shall be carried out on special machine tools. This will improve the geometric accuracy and quality of the handboard model in less debugging and assembly time.
One of the most important goals in the cutting process is to create a uniformly distributed machining allowance for each tool in each machining process. This means that different diameters (from large to small) have to be used, especially in rough and semi-finished processes. At any time, the main criterion should be to be as close to the shape of the final prototype as possible in each process.
The handboard model provides a uniform distribution of machining allowance for each tool to ensure a constant, high productivity and safe cutting process. When AP / AE (axial cutting depth / radial cutting depth) is constant, the cutting speed and feed speed can also be kept at a high level. In this way, the mechanical function and workload of the cutting edge change little, which makes the heat and fatigue produced by the hand plate model less, thus improving the tool life. If the following processes are partial semi finishing processes, especially all finishing processes, unmanned processing or partial unmanned processing can be carried out. The constant machining allowance of handboard model material is also the basic standard of high-speed cutting application.