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几年前曾有专家曾预言今后的齿刀在齿轮加工方面的应用将大为减少,到那时,将没有汽车齿轮生产企业再使用齿刀,在设计制造齿轮传动装置时,也不再采用插齿工艺加工齿轮。
A few years ago had experts predicted that the future of cutter used in gear processing will be greatly reduced, then, there will be no automobile gear manufacturing enterprises, and then use the knife tooth, in the design and manufacture of gear transmission device, also no longer used in gear processing gear.
一般认为插齿工艺是在齿轮不能用滚刀加工的情况下采用的齿轮加工方法,这种加工方法费用高、齿轮质量差。事实上插齿是为带台肩的齿轮进行齿形加工而采用的除此之外,插齿刀也广泛用于是直齿斜齿的内齿轮加工如果齿轮采用内齿拉削工艺比较困难就需要采用插齿刀加工。
It is generally believed that the gear shaping process is a gear processing method which is used in the case that the gear can not be processed by the hob. In fact in tooth is with a shoulder gear of tooth shape processing and the use of in addition, in cutter is widely used in is straight tooth bevel gear processing if gear adopts the inner tooth pull cutting process is difficult to need the shaper cutters processing.
插齿加工的缺点在于,与滚齿相比其加工的循环时间较长。另外齿刀在加工齿轮时由于两者啮合运动,齿刀的整体误差插齿刀刀齿上可能出现的误差或变形(如裂纹、刀齿磨损及刀齿的损坏)会传递到加齿轮的轮齿被破坏是不能使用的。还有许多还没完全执行的方案可使滚刀和插齿刀在技术上的差距进一步缩短。这关系到通过生产齿轮刀具的新型机器。即使不能充分利用齿轮刀具而且重磨次数有限制,这些机器也有利于降低生产费用。磨削插齿刀时难以让根圆直径Di和齿顶倒角高度Sm保持一致。这是因为重磨后插齿刀与齿轮的轴距及插齿刀齿厚这两参数的减少,不可能同插刀本身的齿顶倒角高度及在有齿顶倒角部位上的斜度取得一致。数学模型包含着让轴距变化与插齿刀高度H不相称的三角方程。相反,齿顶修形St和齿顶倒角的斜度以直线关系对应。二者根据插齿刀高度的减少遵照线性关系公式而变。
插齿刀的成形磨削工艺
The disadvantage of gear shaping is that the cycle time is longer than that of the gear teeth. Also in cutter teeth in the gear processing due to their engagement, cutter tooth of the overall error in error may occur on the gear hob tooth or deformation, such as crack, the cutter tooth wear and the cutter tooth damage will transfer to the gear tooth is cannot be used. There are a number of programs that are not fully implemented to make the gap between the hob and the pinion cutter further reduced. This is related to the production of gear cutting tool by a new type of machine. These machines are also beneficial to reduce production costs, even if they are unable to make full use of the gear cutting tool and the number of heavy grinding is limited. It is difficult to make the grinding cutter root diameter Di and height Sm consistent tooth crest chamfering. This is because the grinding in the wheelbase of cutter and gear and gear shaper cutter tooth thick the two parameters of the reduced, it is impossible teeth in the knife itself top chamfer height and the addendum chamfer on the part of the slope of the agreement. The mathematical model contains a triangular equation that is not commensurate with the height of the H cutter. On the contrary, the tooth tip modification St and chamfering tooth inclination to linear relation. According to the reduction of the height of the gear slotting cutter, the two changes according to the formula of linear relation.
达到上述目标的必要条件在于通过平移砂轮而得到想要的齿刀。这类砂轮除了在刀具双齿面上开展渐开线运动,还开展使齿顶倒角斜度线性的轴向运动。
The necessary condition to achieve the above objective is to get the desired tooth knife through the translation grinding wheel. This kind of grinding wheel is carried out in addition to involute motion in the tool on the tooth surface of double axial movement, also carried out the tooth crest chamfering angle linear.

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