矩形花键拉刀矩形花键铣刀规划使用阐明刀具教育规划

  3.2.7 铣刀的容削槽和分削槽·······································18

  3.2.8 校验·························································18

  2.3.1 拉削力·······················································13

  2.3.2 拉刀强度校验················································13

  2.3.3 拉床拉力校验················································13

  3．2规划进程··························································15

  3.2.1 花键轴尺度···················································15

  3.2.2 详细参数规划················································15

  因为自己水平有限,规划编写时刻也比较匆促,在咱们规划的进程中会遇到一些技能和专业相关常识其它方面的问题，再加上咱们对常识把握的程度，所以规划中咱们的规划会有一些不尽善尽美的当地, 为了共同进步往后规划规划的质量，期望在查核和辩论的进程中得到各位指导老师的体谅与批评指正,不胜感激之至.

  < 矩形花键拉刀

  2.2.12 核算切削齿部分长度········································10

  2.2.13 拉刀尺度规划···············································10

  2．3拉刀强度及拉床拉力校验··········································13

  3.3.3 形状方位公役················································19

  3.3.4 齿形差错·····················································20

  3.3.5 资料及热处理················································20

  齿距P为相邻两刀齿间的轴向间隔。齿距P的巨细首要影响容屑槽的尺度和一起作业齿数的多少。确认齿距P时首先应满意容屑空间的需求，其次应使一起作业齿数多于3个。拉刀切削齿距P一般按下列经历公式求也：P=（1.75～2） 式中L——拉削长度。过渡齿齿距等于P，精切齿及校准齿齿距为（0.6～0.8）P。

  拉刀分削槽的效果在于将刀削分割成较小宽度的窄切削，便于切削的弯曲、包容和铲除。拉刀的分削槽，前后刀齿上应交织磨出。

  1 阐明······································································3

  2 矩形花键拉刀··························································4

  2．1规划的基本要求···························································4

  2.2.3 齿升量的挑选··················································5

  2.2.4 切削几许参数挑选·············································5

  2.2.5 确认校准齿直径················································6

  拉削余量A是拉刀各刀齿应切除金属层的厚度总和。应在确保去除前道工序形成的加工差错和外表损坏层前提下，尽量使拉削余量减小，缩短拉刀长度。拉削余量的核算公式如讲义表15-1所列。

  2.2.6 倒角齿参数核算················································6

  2.2.7 确认齿距p及一起作业齿数····································7

  2.2.8 容削槽的规划··················································7

  为削减加工容削槽的成形车刀和样板的品种，应尽量将容削槽的形状和尺度系列化，标准化。现在常用的容削槽形状有直线齿背型，曲线齿背型和直线齿背双圆弧型三种，直线齿背双圆弧槽型槽型容削空间大，制作较简洁，现在出产的拉刀大多选用这种槽型，适用于组合式及分块式的拉削和齿升量大的拉刀上，故应选用直线齿背双圆弧槽型。

  已知键槽宽度B=8mm，圆孔拉刀的校准齿直径 圆=42.020mm，倒角视点θ=30°，倒角尺度f=1mm

  2．2规划进程···························································4

  2.2.1 花键孔尺度····················································4

  2.2.2 确认拉削余量··················································4

  2．4确认拉刀的技能条件················································14

  3 矩形花键铣刀·························································15

  3．1规划的基本要求··························································15

  拉刀归于封闭式切削，切下的切削悉数包容在容削槽中，因而，容削槽的形状和尺度应能较宽阔地包容切削，并能使切削弯曲成较严密的圆卷形。

  3.2.3 齿形高度和宽度··············································16

  3.2.4 铣刀的孔径和外径············································16

  3.2.5 铣刀的齿数··················································17

  后角 拉削时切削厚度很小，依据切削原理中后角的挑选准则，因取较大后角。因为内拉重磨前刀面，如后角取的很大，刀齿直径就会减小的很快，拉刀试用寿数会明显缩短。因而，内拉刀切削齿后角都选得较小，校准齿后角比切削齿的更小。但当拉削弹性大的资料（如钛合金）时，为减小切削力，后角可获得稍大一些。依据讲义表15-6，花键拉刀粗切齿后角 =2°301°、刃带 =0.05～0.15，花键拉刀精切齿后角 =2°30、刃带 =0.1～0.2，花键拉刀校准齿后角 =1°30、刃带 =0.2～0.3。

  我的课程规划课标题是矩形花键拉刀与矩形花键铣刀的规划。在规划进程中,我经过查阅有相关的资料和运用所学的专业或有关常识，比方零件图规划、金属切削原理、金属切削刀具、以及所学软件AUTOCAD的运用，规划了零件的工艺、编制了零件的加工程序等。我使用此次课程规划的机会对以往一切所学常识加以整理查验，一起又可以在规划傍边查找自己所学的缺乏然后加以补偿，使我对专业相关常识得到进一步的了解和体系把握。

  齿升量 在拉削余量确认的情况下，齿升量越大，则切除悉数余量所需的刀齿数越少，拉刀的长度缩短，拉刀制作较简单，出产功率也可进步。但齿升量过大，拉刀会因强度不行而拉断，并且拉削外表上的质量也不简单确保。

  前角 拉刀前角 一般是依据加工资料的功能选取。资料的强度（硬度）低时，前角选大一些。依据讲义表15-5，工件资料钢材、硬度HBS180，得前角 =16°～18°、精切齿与校准齿倒棱前角 =5°。

  刃带宽度 拉刀各刀齿均留有刃带，以便于制作拉刀时操控刀齿直径；校准齿的刃带还可以确保沿前刀面重磨时刀齿直径不变。

  4 参考文献······························································21

  大学三年的学习行将完毕，在咱们行将进入大四,踏入社会之前，经过课程规划来查看和检测咱们在这几年中的所学，一起对咱们本身来说，这次课程规划很恰当地把一些实践性的东西引进咱们的规划中和平常所学的理论常识相相关。为咱们无论是在将来的作业或者是持续学习的进程中打下一个坚实的根底。

  2.2.9 拉刀的分削槽形状·············································8

  2.2.10 花键齿截型规划··············································8

  2.2.11 粗算切削齿齿数··············································9

  3．3矩形花键铣刀的技能条件··········································19

  3.3.1 外表粗糙度（按GB1031－68）·································19

  3.3.2 尺度公役·····················································19

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