Wood and wood based materials mechanical processing technologies

LE010

Wood Science and Technology

Lecturer: Dominika Gornik Bučar, Miran Merhar

3. year, 1. semester

Lectures 65 hours

Seminars

Seminar tutorials

Laboratory tutorials 50

Field work

Other work

Credit points 9 cp

Content (Syllabus outline)

Introduction to mechanical processing operations. Theory of chip formation – chip formation as a result of interaction of the blade geometry, mass flux, friction, orientation of wood tissue and the inherent anisotropic properties of wood. Kinematic characteristics of the complex motion. Mechanics of the process of linear and circular cutting of wood tissues and wood composites. Specific cutting force. Energy consumption during cutting process. Thermodynamics of cutting process; energy requirements necessary for the gradual or. instantaneous separation of the material structure and formation of new surfaces, methods of evaluation of morphological characteristics of machined surfaces, means of obtaining relevant information on the morphology of the treated surfaces. Tools for mechanical machining operations with cutting. Sawing tools, milling tools, planer tools, drilling tools, flexible tools for grinding. Fundamentals of design of woodworking tools. Materials for production of base and blade tools. Persistence and tool wear. Preparation and sharpening. Morphology of the mechanically treated surfaces. Construction fixtures. The selection of treatment technologies and optimization of technological parameters. CNC mechanical processing technology; basics of NC and CNC machine tools, programming, computer-controlled machine tools, software commands based on the geometry of the workpiece, the program commands based on the technological parameters of processing, CAD / CAM systems, simulation techniques

Prerequisites

1. Prerequisites for the work:

Entry in the corresponding year of the study programme.

2. Terms of prerequisites:

Colloquium from tutorials
Attendance at tutorials,
Written report.