UG/NX 螺杆模型的这两种思路，你都知道吗？你怎么选？
今天来看看一位网友发来的问题，这样的一个送料螺杆要如何建模呢？据他所说虽然也能做出来，但是数据总是有点不对的地方，那就来一起来学习一下这个不会损伤数据的建模方式吧~【全版本UG免费下载，UG学习资料免费领取，点击文末链接不要错过哦~】
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/337e4c9b146e456aaf47fbf6a72f161c~tplv-tt-large.image?x-expires=1988578328&x-signature=Zp1nSUpQ00x0QA8%2FmYYR%2FJCe52w%3D
建模过程：
1、打开UG后，先在设计特征中选择圆柱插入
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/462a1192c8dd44aaa04dfa66ba522ccf~tplv-tt-large.image?x-expires=1988578328&x-signature=ZEt7kkBFOfCIYZOHLdyaLgRov70%3D
2、再插入一根与圆柱直径相等大小的螺旋线
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/60b4cb55d0c24abc88ab599badab422a~tplv-tt-large.image?x-expires=1988578328&x-signature=6rL1ONyzwRoId5TrZtlT2gVLjA8%3D
3、在螺旋线的端点处插入草图，按照图纸的要求绘制一个矩形，用扫掠命令做出一个螺旋体
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/e1dad73e0d9e41028c488ca70cbf9d59~tplv-tt-large.image?x-expires=1988578328&x-signature=LeJQIhfNvrA7suJ9lcLI7vXj34c%3D
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/230390fdab1040d8ab61d63b2cd1ace9~tplv-tt-large.image?x-expires=1988578328&x-signature=Sx5cIHtBTYOWcKjmGxdTWJktpSg%3D
4、如果是双头螺纹的话，线性阵列一下即可
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/80604e8dea9f4e97b6d457c3e588de31~tplv-tt-large.image?x-expires=1988578328&x-signature=kEoHfAiRcxMERV0pP6FNBYkKWHY%3D
5、使用修剪体命令再对螺旋体修剪一下，把多出来的部分给修剪掉
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/1ccdff0d9f704e5d8ad87a6bb01ed448~tplv-tt-large.image?x-expires=1988578328&x-signature=IGg3wGTSadGEKtUjEchJZ6k2YFA%3D
6、下半部分如果要做成图纸中的样式的话，可以用桥接曲线来控制
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/40060a332964479aaf526bcf20a8a110~tplv-tt-large.image?x-expires=1988578328&x-signature=VV%2B0UO2NycRpnxLVC7UuCr%2FC5xQ%3D
7、然后再偏置一下柱面，利用桥接做出来的线做艺术曲面
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/d20af14c99a843babbf429b56a771fe1~tplv-tt-large.image?x-expires=1988578328&x-signature=2OjzS4adxNDHIG2PGLrt%2BeCvhYg%3D
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/4db6adc7dc9e499683849cd3ccefffa3~tplv-tt-large.image?x-expires=1988578328&x-signature=fMq3vXD1I4HURwbj6VYs%2BImwBb8%3D
8、先做片体延伸超过偏执面和圆柱面，再用偏置面修剪部分不用的片体
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/a65856437d064a1c8e4ba5d2131407b8~tplv-tt-large.image?x-expires=1988578328&x-signature=DPVeNwSWJwTjumqCiF6pixRram0%3D
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/082ac2b1dc7c4f03b2784d2b59f7695d~tplv-tt-large.image?x-expires=1988578328&x-signature=6vd3pzTLzI3Jay8%2FANVe%2BVyXpZU%3D
9、把特征片体阵列或者镜像到合适的位置后，底部再做个有界平面进行缝合
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/c5050b03ef144e53bba9259d0e929e81~tplv-tt-large.image?x-expires=1988578328&x-signature=6%2BppmPx2d99Y3I4Srz113bxuSD8%3D
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/a08377d6d6e14fe596f76b0c05a9475b~tplv-tt-large.image?x-expires=1988578328&x-signature=p2iLnmugXubWr2tzAn2OSMyQ0A0%3D
10、因为有界平面与圆柱有接触，需要将圆柱向内偏置，这样与扫掠的螺纹求和后，就可以把缝合的片体求和成实体了
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/7ade6b5507a142f697bf81923325d18d~tplv-tt-large.image?x-expires=1988578328&x-signature=gWQ75y%2BOdFNn%2FeUnnLYBU41GdEU%3D
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/c0ef0bfdd4f24926b319a161dbbe9c4a~tplv-tt-large.image?x-expires=1988578328&x-signature=cAdS%2BhZjJOFMkJ9y53ctVPTEGPM%3D
11、给上半部分做一个倒圆角优化
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/349c15fb016f4ca985e513ce0869d8f0~tplv-tt-large.image?x-expires=1988578328&x-signature=SQ82G4icrMj76Fi8MqLGsOTvZ%2FI%3D
末端柄的部分就简单了，直接做一个拉伸即可完成
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/372a6bb6da7c491aa9c5ac066273d831~tplv-tt-large.image?x-expires=1988578328&x-signature=0BMT9k2U500SYd5gMQi5mPKqOZE%3D
https://p3-sign.toutiaoimg.com/tos-cn-i-qvj2lq49k0/a3c28289b6df40829996ed9c2f64150e~tplv-tt-large.image?x-expires=1988578328&x-signature=ucqJsBIXVuEG1f3bGraRsAVnyLs%3D
那要做出图中螺杆圆锥状的，除此方法外，还可以做出槽道，进行求差，这种按加工刀轨方式来完成模型创建，总之就是非常的简单~
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