机械5

盖板数控加工工艺设计及仿真加工 [摘要]数控技术是在机械加工方面的重要方法。数控加工的高效率，高精度以及其自动化程度高，从而降低其加工成本，使得数控加工得到了当前众多企业的青睐。虽然，数控加工能够解决掉之前普通机床的一些难加工和不能加工的不规则零件和模型，但是，一些不规则的难加工的零件的数控加工的加工代码书写较为复杂，同时为了保证数控加工得到的产品质量，需要在数控机床加工之前，做好数控加工工艺的过程，也需要借助计算机辅助软件来仿真加工。本文是以盖板零件为载体，对数控加工工艺进行分析设计。首先对盖板模型加工工艺进行分析，拟定可行的加工路线，结合数控加工的特点和零件本身的特点，选择较为合适的加工路线。利用此加工路线，在UG对盖板模型进行三维造型，造型完了之后，选择合适的毛坯和机床，按照前面拟定的加工工艺，进行一步一步的仿真加工，并检查每步的仿真加工是否合理和可行，并对其中不合理的加工工艺进行修改和优化，最终确定一条最优的加工路线。最后利用UG生成G代码。 [关键词] UG；CAM加工；加工工艺分析；自动编程；数控技术 CNC machi
ni
ng process desig
n a
nd simulatio
n of cover plate [Abstract] Numerical co
ntrol tech
nology is a
n importa
nt method i
n machi
ni
ng. The high efficie
ncy, high precisio
n a
nd high degree of automatio
n of CNC machi
ni
ng ca
n reduce its processi
ng costs, so it has bee
n favored by ma
ny e
nterprises. Although CNC machi
ni
ng ca
n solve some difficult parts a
nd models which are hard to be machi
ned by ordi
nary machi
ne tool, the machi
ni
ng code of some irregular a
nd difficult machi
ni
ng parts is very complex to write, at the same time, i
n order to e
nsure the machi
ni
ng quality of products, we
need to complete the CNC machi
ni
ng process before CNC machi
ni
ng, a
nd also use some software or computer simulatio
n. this paper a
nalyzes the CNC machi
ni
ng process by usi
ng special-shaped cavity as the carrier. I
n this paper, the CNC machi
ni
ng process is a
nalyzed a
nd desig
ned based o
n the cover plate parts. Firstly, the machi
ni
ng process of the profiled cavity is a
nalyzed, a
nd the feasible processi
ng route is worked out. Accordi
ng to the characteristics of the CNC machi
ni
ng a
nd the features of the parts themselves, a more suitable processi
ng route is chose
n. This processi
ng route usi
ng three-dime
nsio
nal modeli
ng of cover plate parts i
n UG, after the other, select the appropriate bla
nk a
nd the machi
ne, accordi
ng to the process i
n fro
nt of the formulatio
n of the simulatio
n processi
ng step by step, a
nd check each step of the simulatio
n processi
ng is reaso
nable a
nd feasible, a
nd the process is
not reaso
nable a
nd modify optimizatio
n, ultimately determi
ne a
n optimal processi
ng route. Fi
nally, the G code is ge
nerated usi
ng UG. [Keywords] UG; CAM processi
ng; processi
ng tech
nology a
nalysis; automatic programmi
ng;
numerical co
ntrol tech
nology 目录 前言1 1绪论2 1.1题目来源2 1.2研究目的及意义2 1.3主要研究内容及解决思路2 1.4数控加工工艺的简介3 1.5 CAM的简介4 2零件图5 3零件的分析6 3.1加工内容分析6 4加工工艺分析7 4.1夹具及基准的选择7 4.2加工工艺路线分析9 4.3刀具与量具的选择10 4.4切削液的选择12 4.5切削用量的选择13 5零件在UG上的仿真加工及后处理程序20 5.1加工的准备工作20 5.2各工序的仿真加工及加工刀路图20 5.3后处理生成G代码25 6总结27 参考文献27 致谢28