2023-12-05
1. Speed: For a large mold processing center with a fast-moving stroke, the spindle speed of the large mold processing machine tool should reach at least 20000r/min, and the metal cutting speed should meet 762~20000mm/min.
2. Precision: Precision control always runs through all stages of mold processing. If you need to implement rough machining and finishing of large molds on a machining center, you must strictly control the positioning accuracy and repeat positioning accuracy of the machine tool. The machining center dedicated for large molds generally has a positioning accuracy of ±1.5μm, and a repeat positioning accuracy of ±1μm.
3. Feedback resolution: The feedback resolution of the machine tool itself is very important for detecting the accuracy of processed parts. With the standard 1μm feedback resolution, the results usually obtained are not very satisfactory. If the resolution can reach 0.05μm, then its finishing result is almost without any flaws.
4. Movable multi-axis machining head: Due to the limitation of mold size and weight, it usually takes a long time to clamp the workpiece. Therefore, the use of a 3-axis linkage machining center not only reduces the number of debugging and clamping times of the workpiece, but also does not affect the machining accuracy of the machine tool, thereby greatly improving the production capacity of the workshop for processing large molds.
5. Chip management: A large amount of chips will be generated during metal cutting. If it can not be eliminated in time, it will inevitably lead to secondary cutting and cause the temperature rise of the machine tool structural parts or the surface of the workpiece. There are usually 18 chip holes under the worktable of a large mold machining center.
6. Thermal stability technology: Due to the long processing time, the influence of ambient temperature must also be considered. The design of the machine tool must take into account the effect of the ambient temperature, so as to prevent the ambient temperature from affecting the accuracy of the processed parts.