What is cycloid milling
Final strawberries are mainly used for the treatment of plans, grooves and complex profiles. For example, in the general method of milling noises, the maximum contact angle of the arc can reach 180 ° at the same time, the thermal dissipation conditions are mediocre and the temperature during treatment increases sharply.
If the cutting path is changed, the millingr turns on one side, which reduces the contact angle and the quantity of cut per revolution, which can reduce the cutting force and the cutting temperature and prolong the Lifespan of the tool. Therefore, the cut can be done continuously for a long time, like (Figure 1), which is called cycloid milling.
Its advantages are that it reduces reduction difficulties and ensures the quality of treatment. Play an important role.
Technical advantages
The cycloid is also called the extended cycloid and external cycloid, which means the trajectory of the outside or inside of the mobile circle when the mobile circle extends a certain straight line without sliding. It can also be called a long rotating wheel line (short). Cycloid machining is a lateral treatment using a end mill with a diameter smaller than the width of the groove, which uses its side to transform half of the arc into a small part of the arc, and can treat various grooves and mold the cavity. In this way, in theory, a final mill can treat grooves and profiles of any size larger than it, and can also easily treat a series of products.
With the development and application of CNC technology of the computer, the controllability of the milling paths, the optimization of the cutting parameters and the potential with multiple facets of cycloid milling are being adopted and exerted more. It has also been considered and paid attention to parts processing industries such as aerospace, transport equipment and manufacturing mold mold. In particular in the aerospace industry, commonly used titanium alloys and heat -resistant nickel heat -resistant alloy components have many difficult characteristics, in particular:
High thermal resistance and hardness make the tool during treatment difficult to resist or even deform;
High shear resistance makes the blade easy to damage;
The low thermal conductivity makes high heat difficult to cause the cutting area, where the temperature often exceeds 1000 ° C, aggravating tool wear;
During treatment, the material is often welded to the blade to form a tumor to stack. Poor quality of the treatment surface;
The material in heat resistant alloy based on nickel of the austenite matrix has a serious hardening;
Carbon in microstructures in heat -resistant nickel heat alloy can cause abrasive wear on the tool;
Titanium alloys have a high chemical activity, chemical reactions also aggravate damage, etc.
These difficulties can be carried out using cycloid milling technology to ensure that machining takes place continuously and gently.
Due to the continuous optimization of materials, coatings, geometric shapes and the structure of the tool, rapid progression of intelligent control systems, programming technology and efficient and effective multi-functional machinery, at high speed (HSC) and high – cutting treatment (HPC) (HPC) also carried out a high -speed cutting (HSC) with high speed (HSC) and high efficiency (HPC) has also reached a new summit. High -speed treatment mainly considers speed improvement. Effective machining requires not only consideration of the improvement in cutting speed, but also requires taking into account the reduction in auxiliary time, to configure reasonably various cutting parameters and cutting paths, to perform processes of processes Reduction of treatment of compounds, to improve the cutting rate of metals per unit of time and to the same thing the time extending the lifespan of the tool and reducing the cost, the protection of the environment is taken into account .
Technical perspectives
YU cycloid milling data in the airplane engines (below)
When processing the TI6242 titanium alloy, the cost of the tool per unit of volume can be reduced by almost 50%. be reduced by 72%. Treatment hours X17CRNI16-2 can be reduced by around 70%. Due to these good experiences and achievements, advanced methods of cycloid milling are applied to more and more fields, and have also received attention in certain areas of fine precision and have started to be applied.
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