Analysis of Static Friction Coefficient Between Work-piece and Rubber Belt in Sanding Wood-Based Panel

作者：Luo, Bin; Li, Li^*; Xu, Meijun; Liu, Hongguang; Xing, Fangru

来源：BioResources, 2014, 9(4): 7372-7381.

DOI：10.15376/biores.9.4.7372-7381

• Critical static friction coefficient
• Grit size
• Medium density fiberboard
• Normal force
• Particle board
• Static friction coefficient
• Sanding force

This study analyzes the critical static friction coefficient (mu(0)) and the static friction coefficient (mu) between work-piece and rubber belt during sanding medium density fiberboard (MDF) and particle board (PB). The purpose is to provide theoretical support for improving design techniques of sanding machine and choosing appropriate rubber belts for sanding. The results indicate that mu(0) is a constant that can be calculated by maximum sanding force (sF(Max)) and maximum normal force (nF(Max)). Besides, there is an exponential relationship between intensity of pressure (P) and mu when work-piece is relatively static on a rubber belt. Among all sanding parameters, git size (G) has the greatest influence on mu. In single-factor experiment, we found that the smaller the nF(Max) is, the greater the mu is (for same rubber belts), but the variation rates of mu and nF(Max) are coincident. Six types of rubber belts are adopted, and the average mu of No. 1 and No. 4 are greater than others, but average mu of all the belts are lower than mu(0), so when use such six types of rubber belts, a hold-down device or vacuum chuck should be equipped on the sanding machine. Patterns of rubber belts have some impact on mu, and appropriate patterns on the surface of rubber belts contribute to higher mu.

• 出版日期2014-11
• 单位北京林业大学