Tool path generation for a four-axis machine to engrave letters on tire sidewall molds
Tool path generation for a four-axis machine to engrave letters on tire sidewall molds
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DOI：
10.1007/s12541-009-0050-z
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发表时间：
2009-07-01
影响因子：
1.9
通讯作者：
Lee, Cheol-Soo
中科院分区：
文献类型：
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作者：
Lee, Cheol-Soo
轮胎侧壁是轮胎中桥接胎面和胎圈的部分。用三轴数控机床制造轮胎胎侧模具比较困难，因为胎侧上的字母要垂直于胎侧表面雕刻。本文提出了一种可在侧壁模具上高效雕刻字母和图案的四轴刻字机。引入弯曲投影算法，将字母无失真地投影到侧壁表面。提出了使用四轴刻字机切割字母和图案的流程：（1）使用机械探针测量轮廓曲线，（2）使用弯曲投影算法将字母不变形地投影到侧壁表面，（3）生成四轴CL数据，以及（4）计算逆运动学以生成NC代码。该过程使用PC-NC（个人计算机数控）系统来实现，该系统具有基于个人计算机的开放式体系结构。结果表明该方法可用于制造轮胎胎侧模具。
A tire sidewall is that section of the tire that bridges the tread and the bead. It is difficult to manufacture tire sidewall molds with a three-axis CNC machine, because the letters on the sidewall should be engraved perpendicularly to the sidewall surface. In this paper, a four-axis lettering machine that efficiently engraves letters and patterns on the sidewall mold is proposed. A bending projection algorithm is introduced to project letters on the sidewall surface without distortion. The procedures to cut letters and patterns using the four-axis lettering machine is proposed: (1) measuring the profile curve using a mechanical probe, (2) using a bending projection algorithm to project letters onto the sidewall surface without distortion, (3) generating the four-axis CL data, and (4) calculating the inverse kinematics to generate NC codes. The procedure is implemented using a PC-NC (Personal Computer Numerical Control) system, which has an open architecture based on the personal computer. The results demonstrate that the method is useful for manufacturing tire sidewall molds.