prof. dr hab. inż. Kazimierz Orłowski
- Full Professor at Department of Manufacturing and Production Engineering
- Machining, Tools and Lathes Workshop Manager at Department of Manufacturing and Production Engineering
- Budynek Wydziału Mechanicznego pokój 337
- (58) 347 21 01
Machining, Tools and Lathes Workshop Manager
- Budynek Wydziału Mechanicznego pokój 332
- (58) 347 22 04, (58) 347 26 68
A new computational model, based on fracture mechanics, was used to determine cutting forces. Unlike traditional computing methods, which depend on many coefficients reflecting the machining of solid wood, the new model uses two main parameters: fracture toughness and shear yield stresses. The aim of this study was to apply this new method to determine these parameters for the tooth cutting edge principal positions and longitudinal...
Estimation of fracture toughness and shear yield stress of orthotropic materials in cutting with rotating tools
The cutting force is an energetic effect of splitting material, and might be considered from a point of view of modern fracture mechanics. Forecasting of the shear plane angle in cutting broaden possibilities for modelling of the cutting process even for thin uncut chips. Such mathematical model has been developed here for description of the orthotropic materials’ cutting on the base of fracture theory, and includes work of separation...
In the classical approach, cutting forces and cutting power in sawing processes of orthotropic materials such as wood are generally calculated on the basis of the specific cutting resistance kc (cutting force per unit area of cut). For every type of sawing kinematics (frame saws, band saws and circular sawing machines) different empirical values of specific cutting resistance kc have to be applied. It should be emphasised that...
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