In the hole processing process, we used two drill bits of “15.8mm Drill†and “7.0mm Drillâ€. The 15.8mm drill bit is a combined drill bit, which not only processes the bottom hole processed by the 7.0mm drill bit into the required size. And the groove on the end face is also completed at one time. In the actual processing of our factory, the application of this combination tool is very common. We are used to generating a complete part machining program in EdgeCAM, so hole machining is also an indispensable step. The hole machining method in EdgeCAM supports various hole machining cycles, and the operation is very simple, so that the integrity of the program is obtained. The guarantee.
In the milling process, we can define the installation direction of the milling cutter, because in the milling and machining center of our factory, the milling cutter has two mounting directions, namely radial (Y-axis) and axial (C-axis). ) Installation, in the software, can also have the same settings. In C&Y axis machining, the drive mode is divided into "tool drive" and "spindle drive". The equipment of our factory is tool drive, so here we specify the tool drive. It can be seen that EdgeCAM is closely related to the type of hardware equipment of the machine tool during the tool setting process of the turning and milling process.
In the machining process of this part, we chose the Y-axis dynamic tool. In the movement of the Y-axis, since the Y-axis of the device is a virtual axis, its motion is realized by the combined motion of XC. Therefore, in EdgeCAM, Select "Rotation mode" machining (Note: "Plane mode" machining has a Y coordinate, the machine must support the Y axis, and the C axis needs to be locked when the Y axis moves). During the milling process, EdgeCAM has a variety of milling methods, such as roughing, contour milling, face milling, etc., which can be used to quickly complete the first plane. Thereafter, the C-axis is moved 90° around the circumference to complete the second plane, and so on, other planes can be processed. If the machining contents on other planes are also the same, the existing machining path of the first plane can also be transferred to other planes by the rotary copy function.
Simulated machining effect after completion of tool path design
Since we have already produced a complete post-processing template in advance, we can generate a complete machining program in one go after the tool path design is completed. There are a lot of things worth noting in the programming process. E.g:.
a. When the first four-sided milling is completed, the other three planes are processed, and so on, just pay attention to the difference between the starting point of the C-axis and the upper process by 90°;
b. Hole processing When selecting the drill bit, the axial power tool must be selected, or the forming tool can be designed by itself;
c. Each time a new tool is created, the tool type must be confirmed, such as turning tools, milling cutters, drills, taps, reamer, etc., because the dynamic menu contents of EdgeCAM are related to the tool;
d, after milling and end face drilling, the spindle lock and C axis feed must be canceled, otherwise the milling process cannot be performed;
e. After each tool finishes machining, you must return to the safe position to change the tool. This option is already available in the software interface.
In summary, EdgeCAM can not only complete the programming of turning and milling and generate complete machining programs in one time, but also provide more automation options, which reduces the working intensity of programmers. It also guarantees the quality of the processed products. Due to the limitations of our equipment, there are still many functions that are not used, but so far, EdgeCAM has solved the problem of the existing equipment programming in our factory.
Admittedly, in the actual application process of EdgeCAM software, I also felt some shortcomings. For example, due to the needs of the simulation environment, the requirements for computer graphics cards are high, and the NC code generated cannot be physically simulated. Of course, with hardware and software. The development should be satisfactorily resolved.
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