Since there is no intermediate information describing the machining model after roughing and finishing, the residual machining allowance distribution and the maximum remaining machining allowance of the roughed surface are Both are unknown. The existing CAD/CAM software for high-speed machining of molds mostly has the residual machining allowance analysis function, and can adopt a reasonable semi-finishing strategy according to the size and distribution of the remaining machining allowance. It is based on the above problems in the mechanical processing industry, as well as the reference of new technologies and concepts of CAD/CAM system, the continuous introduction and progress of MIS system and ERP system, the development of CIMS technology in China, and the information integration at the bottom of the workshop is the key. When cutting and cutting out the workpiece, the tool should be cut and cut as much as possible by tilting (or arc) to avoid vertical cutting and cutting. Avoid burying the tool in the workpiece. For example, the residual machining allowance of the local milling process is equal to the roughing. However, the previously developed CAD/CAM system is not continuous in the geometric description of the parts. Reprinted please specify: Hengxing Chang Mould Website: http://. Roughing is based on the volume model and finishing is based on the surface model. Avoid suddenly changing the tool feed direction. Climbcutting reduces cutting heat, reduces tool force and work hardening, and improves machining quality. This is especially important for tool steel molds because it will affect the change of the cutting area of the tool and the change of the tool load during finishing. This process uses only a small diameter milling cutter to remove rough cut uncut corners.
It is best to use the spiral lower knife to reduce the tool load; the plastic mold processing mold type When the core is used, the knife should be cut off from the outside of the workpiece and then cut horizontally into the workpiece. The plastic mold optimization process includes: calculation of the contour after roughing, calculation of the maximum residual machining allowance, determination of the maximum allowable machining allowance, and profile division of the remaining machining allowance greater than the maximum allowable machining allowance (such as grooves, corners) The area where the transition radius is smaller than the radius of the roughing tool) and the calculation of the tool path during semi-finishing. Local milling of Pro/Engineer software has similar functions. Connected, shared information, and can manage information in the production process within the CNC section of multiple machine tools to reduce production preparation, especially the preparation time of CNC NC programs. And then semi-finishing; if the remaining machining allowance value of the local milling process is used as the remaining machining allowance for the semi-finishing, the plastic mold process can not only remove the rough cut uncut corners, but also complete the semi-finishing machining. For example, OpenMind’s HyperMill and HyperForm software provide methods such as beam milling and residual milling to remove corners with large machining allowances after roughing to ensure a uniform machining allowance for subsequent processes. Constant cutting load.
The latest plastic mold development is directly connected by the external computer and CNC machine through the RS-232C serial port, which can directly and quickly transfer the NC program, and the external computer can be combined with multiple CNC machines with the same or different control systems. The weight. The main goal of semi-finishing semi-finishing is to make the contour of the workpiece flat and the surface finishing allowance uniform. , which affects the stability of the cutting process and the quality of the finished surface. For example, when machining the mold cavity, the tool should be prevented from being inserted vertically into the workpiece, but the inclined lower knife method should be used (the common inclination angle is 20° to 30°). Therefore, the semi-finishing strategy should be optimized to ensure a uniform residual machining allowance on the surface of the workpiece after semi-finishing. A constant cutting area and material removal rate are obtained by calculation to balance the cutting load with the tool wear rate to improve tool life and machining quality.What are the cutting conditions of plastic molds? – Hengxingchang MouldPlastics with Constant Cutting Conditions Many CAM software developed can maintain constant cutting conditions by auto mould following the following measures to achieve good processing quality of plastic molds. With the maturity of CAD/CAM, integrated management software, and the increasing demand for flexible manufacturing systems, the use of CNC machine tools, from stand-alone use to computer integrated management, is the direction of the development of production and processing technology. To this end, we have designed and developed the various products described below for the integration of shop floor equipment
Tags: auto mould
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