模具型腔数控铣削技术研究与应用

向强

[摘    要]在采用铣削技术对磨具型腔进行加工时，广泛地应用了数控加工中心，CAM功能在UG NX，MasterCAM，Cimatron 等软件中得到了良好的发展和提升。但是，即使数控编程软件是目前最为先进的技术，也离不开技术人员对相关工艺的制定，对刀具、切削参数等的合理选择。能否采用数控技术进行高效率、高质量的加工，与相关人员的工艺编程水平有着密切的关系。同时，虽然模具型腔有着多样化的形状，然而其缺乏多样化的构成类型。任意加工特征所对应UG的加工方法为一种或多种。通过对相关规律的研究、总结，能够为UG CAM编程提供指导，并从效率和质量方面对加工作业进行提升。

[关键词]模具型腔;数控铣削技术;研究应用

[中图分类号]TG547 [文献标志码]A [文章编号]2095–6487（2021）01–00–02

Research and Application of Mold Cavity NC Milling Technology

Xiang Qiang

[Abstract]CNC machining center is widely used in grinding tool cavity processing by milling technology. Cam function has been well developed and improved in UG NX， Mastercam， Cimatron and other software. However， even if the NC programming software is the most advanced technology， it is also inseparable from the formulation of the relevant technology and the reasonable selection of cutting tools and cutting parameters. Whether the NC technology can be used for high efficiency and high quality machining is closely related to the process programming level of relevant personnel. At the same time， although the mold cavity has a variety of shapes， it lacks a variety of composition types. The UG machining method corresponding to any machining feature is one or more. Through the research and summary of the relevant laws， it can provide guidance for UG CAM programming， and improve the efficiency and quality of processing operations.

[Keywords]mold cavity; NC milling technology; research and application

1 数控加工铣削参数

在对切削用量进行合理选择时，需要遵循以下原则：在粗加工阶段常需以生产率的提升为重点，但是也需要从经济性和成本方面，对加工作业加以考虑;在进行精加工的过程中，首先需要在高质量的加工基础上，进行高效、经济的切削。结合说明书及相关手册，并根据自身的经验，对机床和切削用量的具体数值进行确定。粗加工阶段主要是体积加工，想要进行高效地生产，就需要采用耐用的道具，对材料进行尽可能地去除，而吃刀量，进而以及切削作业的速度等，都关系着材料能否得到高效的去除。针对各切削用量要素来说，任意要素的改变都会导致道具无法保持原有的耐用度，但是有着不同程度地影响，切削速度是最大的影响因素，吃刀量是最小的影响因素。……