齿距累积总公差能全面反映齿轮的运动精度吗?

Worm Face Modulus
Worm first few
L helix angle
Spiral direction
Worm axial section profile angle
Worm Drawing No. matching
Worm pitch cumulative tolerance
2A-type worm gea

以 DIN 5480 —— W 120 x 3 x 38 x 8f 为例,计算出,当量棒直径为6mm时,最大基准跨棒距是126.0169153 mm.用实际基准齿厚最大值Smax计算.示例为（126.017）最小跨棒距是125.9559604 mm.用最小实际齿厚Smin计算.示例...

经计算,齿轮参数如下：
齿数28；模数10；压力角20°；变位系数0；分度圆直径280；齿顶圆直径300；齿根圆直径255；齿距31.416；齿厚=齿槽宽=15.708 .

法向齿距所在直线,必与基圆相切,所以也是渐开线发生线；渐开线发生线与基圆做纯滚动,所以法向齿距（直线、线段）像细线一样绕回到基圆上,就是基圆齿距（弧长）.
欢迎追问.

齿距:是相邻两齿上相当点间的分度圆弧长.
周节：是在分度圆上的圆周齿距.
所以周节就是齿距,齿距会让外行以为是直线距离
单位与模数相同为毫米,数值为3.14m（m是模数）

This article is on how to design a CAI courseware articles,design the content around the topic of "Measurement of pitch by pitch gear pitch deviation and the cumulative deviation of experiment",the last of the CAI courseware designed mainly used teaching,teachers can demonstrate to the students before the experiment to improve the quality of teaching.The article details the use of measured pitch pitch deviation of the experimental purpose of the experiment,theory,experimental procedure and data processing methods,etc..The design of the courseware related to Flash,3D MAX,AutoCAD and Photoshop software several.The article details the use of various software,as well as details of the production process of this courseware.One picture with text to explain the way this experiment introduced the use of teaching methods in order to courseware users within a short period of time in the skilled use of the courseware,and to understand the content of courseware in the experiment.Appendix part of a search in the database related to the experimental papers in English,with Chinese translation.

不论是标准齿轮还是变位齿轮（不论齿轮是否变位）,齿距不变!
和标准齿轮相比,正变位齿轮,分度圆齿厚增加,齿槽宽减少,齿顶高增加、齿根高减少,齿顶厚减少、齿根厚增加,和基园齿厚增加.
负变位齿轮与正变位齿轮,正好相反.

d,但加工工艺的原因会产生一定的误差,可以忽略不计

齿轮的齿距,是相邻两齿同侧齿廓（渐开线）之间分度圆弧长.
模数,是齿距与π（圆周率）的比值.
模数大,齿就强壮、厚实；齿轮的尺寸就大.

两圆柱直齿齿轮正确啮合条件m1=m2=m
a1=a2=a
m:模数
a齿轮压力角
拥有以上这两个条件齿轮就可以正确啮合了!
当模数相同时齿距也是相同的,正确的啮合和齿轮直径齿宽齿数是没有任何关系的!
给你讲解的很透彻,给分哦

齿距p=πm 即 12.566=3.1416*m 所以,齿轮模数m = 4 (mm)
齿轮的分度圆直径 d=mz=4*25=100 (mm)
齿轮齿顶圆直径 100+8=108
齿轮齿根圆直径 100-2*4*1.25=90

两齿轮的模数2,及齿数,30,45

你的说法也是成立的,不过,一般锉刀的粗细是按照每10mm内有多少齿来表示的.锉纹号——表示锉齿粗细的参数.按照每10mm轴向长度内主锉纹的条数划分五种,分别为1号、2号、3号、4号、5号.锉纹号越小,锉齿越粗.

A：全齿高

手铰刀的齿距在圆周上是不均匀分布,是为了获得较高的铰孔质量.它可使铰刀在碰到孔壁上粘留的切屑或材料中的硬点时,各刀齿不重复向硬点的对称边让刀,一免孔壁产生轴向刀痕.
另外由于手铰刀每次旋转的角度和停歇方位是大致相近的,如果用对称齿就会是某一处孔壁产生凹痕.