Abstract:

Authors put over a kind of method which checks and adjusts the dynamic tensile force range of band saw blades. It results its natural frequency under static and dynamic states, and come to calculats static tensile force and dynamic tensile force of band saw blades by means of the string vibration formula, its calculating precision is to be identical with adjusting tensile force range of band saw blades. The result showed that regularity to utilize string vibration simplified theory model accorded the actural condition of relationship tensile force and natural frequency with woodworking band saw blades. Meanwhile, it's full reciivability that the paper bringed forward the measure method of dynamic natural frequency and static natural frequency,as this study question to adjust inspection and acceptance means of dynamic tensile force of band saw blades and its engineering application. It inspected and measured natural frequencies of band saw blade to determine its tensile state,so that realized dynamic adjustment of tensiled band saw blade by means of shock excitation, and had supervise signification to lucubrate of woodworking band saw blade theory and improvenment of its equipment technology.

Key words: band saw blades, dynamic, tensile force, natural frequence, tight side, loose side, string vibration, spectrum analysis