摘 要镗刀是孔加工刀具中的一种，是高精度等级的精密孔尺寸加工的重要工具。其主要作用就是机加工过程中对带有孔结构的工件进行孔加工，此外，镗刀还可以对已有孔零件进行尺寸上扩大的扩孔加工和孔形状零件的仿形加工。镗刀除了加工孔的功能，还可以用来加工零件的端面的外圆等。镗刀加工孔的精密等级可以达到级，加工出来的孔表面的粗糙度可以达到。因此在孔状零件的加工过程中，镗刀无论是从精度角度还是功能需求方面都使得其得到了广泛的使用，使得其成为机械加工制造领域不可或缺的工具。86328

传统的孔形零件加工过程中有很多种工艺方法，扩孔、钻孔、铰孔、镗孔等，但是要保证足够的加工精度前提下，满足孔的轴向加工工艺要求传统的加工方法就无法实现。在加工孔的过程中保证孔的轴向镗孔加工的同时实现横向进给运动来满足不同孔径向不同形状的加工是传统的镗孔刀具也无法实现的。因此这就需要设计一种满足上述要求的特殊的镗孔装置才能满足要求。为了解决这一重大加工难点，克服现有孔加工技术中存在的不足，本设计提出了一种可以实现轴向孔加工与径向进给运动同时进行，从而满足不同孔径向不同形状加工需求的加工刀具——锥孔镗刀装置。该装置的设计可以实现轴向和横向移动同时进行，极大的扩展了加工工件的范围，同时和节约了加工时间，提高加工效率。

本设计中对锥孔镗刀的轴向运动路径与横向移动方式进行了原理上的设计和解释，同时，针对设计出的锥孔镗刀的机械结构进行尺寸分析，通过对其两根轴的设计校核以及减速器、齿轮、涡轮蜗杆等重要零件的设计计算，最终给出了整个锥孔镗刀装置的整体装配图和各零件的设计校核过程以及详细的零件图。并通过分析验证得出了所设计的锥孔镗刀加工装置能够很好的克服现有加工过程中存在的不足，满足了设计需要，具有一定的工程应用的意义。

毕业论文关键词：锥孔镗刀；设计；校核

Abstract Boring is a kind of drilling tool 。It is an important tool for precision hole size machining with high precision。Its main function is the process of machining of workpieces with the pore structure of hole processing。 In addition, the boring tool can also copy machining of size expanding reaming and hole shape parts of existing hole parts。 Boring。 Apart from processing features, can also be used for the end surface of the processing of parts of the outer circle。 Boring hole machining of precision grade can reach the level of
, processing out of the hole surface roughness can reach
。 therefore in the process of porous parts and boring regardless of is from the accuracy point of view or function demand aspect the has been widely used, has become mechanical manufacturing domain indispensable tool。

In the traditional shape of hole machining process has many kinds of technique, reaming, drilling, reaming, boring, but to ensure sufficient accuracy under the premise, to meet the hole in the axial processing will be unable to achieve the requirements of the traditional processing method。 In hole machining process to ensure of the axial bore boring and realize traverse movement to meet different aperture to the processing of different shape is the traditional boring tool can not be achieved。 Therefore, it is needed to design a meet the requirements of special boring device can satisfy the requirement。 In order to solve the major processing difficulties, overcome the disadvantages existing in the existing hole processing technology, the design proposed A can realize the axial holes and radial feed motion at the same time, to meet the different aperture to the processing requirements of different shapes of machining tool, taper hole boring cutter device。 The design of the device can realize the axial and lateral movement at the same time, greatly extends the working parts of the range, and save the processing time and improve processing efficiency。