Dynamics of guided circular saws

加拿大的木材加工业对加拿大经济的健康发展起着至关重要的作用。为了保持其在国际市场上完成的能力，它必须不断提高将原木加工成锯材的效率。必须解决两个主要因素：需要最大限度地减少锯末损失的木材数量，以及需要提高将给定原木转化为锯板的速度。本研究解决了这两个问题。一方面，正在研究使用比传统使用的更薄的圆锯(以减少由于切割厚度造成的损耗)；另一方面，正在研究提高锯子的操作速度(以便增加木材通过锯子的速度)。困难既出现在使用太薄的锯子上，也出现在锯子运行得太快上。在这种情况下，叶片可能会过度偏离，从而在刨至所需尺寸时造成过度浪费。正在进行的工作试图通过实验测试和计算机模拟来了解这种行为的原因。实验室和计算机测试的结果将导致新的锯切结构，这种结构将通过在锯厂进行详细测试来验证。

Canada's lumber processing industry is a vital contributor to the health of the Canadian economy. In order to maintain its ability to complete in the international market it must continually improve the efficiency with which logs are processed into sawn lumber. Two principal factors must be addressed: the need to minimize the amount of wood lost in saw dust, and the need to increase the speed with which a given log can be converted into sawn boards.The present research addresses both these isssues. One the one hand research is being conducted into the use of thinner circular saws than have been traditionally used (in order to reduce wastage due to the thickness of the cut); and on the other hand investigations are being conducted into increasing the speed that saws can be operated at (in order to increase the speed that the wood can be fed through the saw).Difficulties arise both in using saws that are too thin and in running saws too fast. In such circumstances the blade may deviate excessively and thus cause excessive waste when planed to the required dimensions. The work being conducted seeks to understand the cause of such behaviour through experimental testing and computer modeling.The results of laboratory and computer testing will lead to new sawing configurations that will be verified by detailed testing in saw mills.