Force and Form Error Models for Wavy Surface in Successive Peripheral Milling Process

連續側銑加工中不規則曲面銑削力與表面形貌誤差模式之建立

10.29979/JCSME.201110.0003

江浩寧(Hao-Ning Chiang)；王俊志(Jiunn-Jyh Wang)

form error ； wavy surface ； convolution force model ； successive peripheral milling

中國機械工程學刊

32卷5期（2011 / 10 / 01）

391 - 400

英文

連續側銑加工常用於降低因切削力引起刀具或工件偏移導致之不規則曲面形貌誤差，此不規則曲面將會改變不同高度切刃之軸向切深、浸入角度與切屑負載之大小進而影響連續側銑後之表面形貌。本篇論文提出適用於不規則曲面銑削之捲積力學模式與捲積刀具偏移模式，分析連續側銑加工中之切削力與因刀具偏移產生之表面形貌誤差，並透過此模式探討不同連續銑削型態對切削力、表面形貌誤差與表面粗糙度的影響。本文建立之模式將透過各種不同銑削型態之實驗進行驗證。實驗結果發現連續側銑加工中若最後一道加工選用順銑能獲得較佳之工件表面粗糙度，而連續側銑中先逆銑後順銑能提升工件之精確度。此外，本文透過誤差分析模式進一步提出一徑向切深分配策略避免逆銑造成之過切。

The successive peripheral milling process is commonly used to reduce the form error on the wavy surface caused by the cutting force-induced tool or work deflection. For such wavy surfaces, the radial depth of the cut, the engagement angle, and the chip load vary along the cutter axis. In this paper, an improved convolution force model and a tool deflection model for wavy surfaces in the successive peripheral milling process are presented. The effects of milling configuration on the cutting force, form error, and surface roughness in successive peripheral milling are studied. The models are validated by a series of machining experiments. The measurement results show that the milling configuration has a significant influence on the surface roughness of the finished part. A recommendation is given on how to allocate the radial depth of cut in successive milling to improve machined surface quality in terms of geometry accuracy and surface roughness.