The study examines the degree of deviation from the nominal size of the produced open full-width mortise and tenon joint elements for their optimal pairing based on the measured thickness and gap width data. The characteristics of the measuring devices used were analysed by the repeatability and reproducibility test. The compressive strength of the single-glued joints (where only the surfaces of the tenon were glued) and double-glued joints (where the surfaces of both the mortise and tenon elements were glued) for various joint fit categories was also determined. It was found that despite the huge number of produced test specimens and their measurements, the joint fits could be maintained with the milling machine and tools. The thickness of the joint could be characterized by measuring the data at the centre of the tenon, whereas the gap width of the mortise could be characterized by measuring the data on the side of the tool leaving the wood. The double-glued joints showed higher breaking force and displacement values as compared to the single-glued joints. The joints were found to be the strongest at a tight fit of 0.1 mm.

中文翻译：

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评估最佳拟合标准对榫眼和榫眼角接缝抗压强度的影响

这项研究根据测得的厚度和间隙宽度数据，检查了与生产的敞口全宽榫眼和榫on单元的标称尺寸之间的偏差程度，以寻求最佳配对。通过重复性和再现性测试分析了所用测量设备的特性。还确定了对于各种接头配合类别的单胶接缝（仅将榫的表面粘合在一起）和双胶接缝（其中榫眼和榫构件的表面均粘合在一起）的抗压强度。结果发现，尽管生产了大量的测试样品及其测量值，但可以使用铣床和铣刀来保持接头配合。接头的厚度可以通过测量榫中心的数据来表征，榫眼的间隙宽度可以通过测量工具离开木材一侧的数据来表征。与单胶缝相比，双胶缝显示出更高的断裂力和位移值。发现接头在0.1 mm的紧配合下最坚固。