Wear Features Guide of Sliding Table Panel Saws with Shafts

Abstract

Sliding table panel saws are designed for precise, high-quality cutting board materials at a given workpiece size. The machines may lose precision due to wearing of elements moving mechanism and the guides. Our study aims at solving the problem of maintaining the accuracy is complicated by the fact that the guides wear unevenly. We applied the most common scheme of placing the sliding table on the machine frame, which includes rollers with flanges, based on the shafts. The sliding table was moved and stopped every 100 mm for measurements. Deviations table surface in the vertical and horizontal planes were measured using a dial indicator mark ИЧМ-10 with division 0.01 mm. The results of the study showed the character of uneven wear of the length in the vertical and horizontal planes. Firstly, the vertical plane passing through the plane of the saw blade and the horizontal plane coinciding with the plane of the working surface of the movable table. The amplitude of the vibrations of the table in the horizontal plane ranges from 0.1 to 0.15 mm, with the largest deviations occurring in the initial and final position of the table. The vertical vibration amplitude is the same as in the horizontal one. However, the length of the table swings in the vertical plane are distributed in opposite phase to the same vibrations in the horizontal plane. Minimal fluctuations are observed in the area about equal to ¼ the length of the table. The central table part (approximately 1/3 of its length) tends to tilt toward the movable support of the machine under the influence of the mass of material being cut, the cutting process that characterizes the blanks of various sizes and weights attributable to a central portion of the table, and it leads to a more intense wear. We should conclude that the amplitudes of the oscillations of the sliding table in the horizontal and vertical planes are approximately the same. The nature of the oscillations is in the central zone of the sliding table movement in different directions in the measurement plane. Multidirectionality vectors result in bending and torsion in the central part of the table that is the source of the increased rail wear.

Keywords

• format panel saw
• sliding table
• wear
• carriage
• guide