锥形滚花的加工方式_东莞市安泰科精密五金有限公司

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滚花技术概要

刀具的选择及应用

滚压滚花刀具

英制滚花轮公制滚花轮鼓形滚花轮端面滚花滚花刀杆及配件内孔滚花刀具

切削滚花刀具

切削型滚花轮切削型刀杆

其他产品

销钉抛光轮印刷业滚轮拔轮器切断刀座客户定制品展示

技术参考

切削参数，齿距的换算客户互动

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锥形滚花的加工方式

Figure 1 - Poor
Suitable for pitch change less than 10%

Figure 2 - Good
Suitable for pitch change up to 20%

Figure 3 - Ideal
Will produce cleanest knurled parts

Often, parts may require knurling on conical or radial surfaces, either for function or decorative purposes. With proper tools and application, a clean, well-formed knurl or serration can be produced.

One of the most frequent mistakes when knurling a conical surface is having the knurling tool and the part set with parallel axes. This is shown in figure 1 and is similar to running a pair of bevel gears the wrong way. It can work for larger parts with small conical angles, but as the conical angle increases, the results become worse. This method should only be used when the pitch change from the small to large end of the part is less than 10%.

While technically not correct, using a conventional forming knurl as shown in figure 2 can be effective when rolling on relatively larger diameters with smaller conical angles. The advantage here is that tooling is substantially cheaper, but once again as the conical angle increases the knurled part will be of lesser quality. This method can be used to produce acceptable parts when the pitch change is as high as 15-20%.

A better method of producing a clean knurl on a conical surface with maximum tool life is shown in figure 3. By using an adjustable angle holder along with the proper conical knurl die, this method makes it possible to roll tapered serrations with a controlled number of teeth and consistent repeatability.

For proper tracking at both ends of the piece, it is necessary to establish the geometrical relationship between the part and the tool with consideration given to the space available for tooling. It is sometimes advantageous to use a shank-type knurling tool where clearance is not available for the conventional style knurl holder.

In certain cases, parts may be knurled with radial teeth on the end of parts, by using a conical knurl of the proper design. Here again, the results depend primarily on establishing the geometric relationship between the part and the tool. For more information on either of the above cases see face knurling.

Whenever knurling on conical and end surfaces, a tracking correction factor is usually applied to the calculated diameter because of many of the many variables involved, such as hardness of material, elasticity of machine tools and tool holders, etc. This factor is necessarily empirical.

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