遼字石油化工大學⊙ Chapter Two Principles of Metal Cutting and Cutting Tools
Chapter Two Principles of Metal Cutting and Cutting Tools
遼字石油化工大學⊙ Instructional objectives 1. Understand the meaning of cutting motion, cutting parameters and the type of tool 2. Understand the properties and categaries of tool materials 3. Understand the chip formation process, chip types and control. Understand the phenomenon of bue 4. Understand the cutting force, cutting power, cutting force measurement and empirical formula of it Master the influencing factors of cutting force
Instructional objectives 1.Understand the meaning of cutting motion, cutting parameters and the type of tool; 2.Understand the properties and categaries of tool materials. 3.Understand the chip formation process, chip types and control. Understand the phenomenon of BUE. 4.Understand the cutting force, cutting power, cutting force measurement and empirical formula of it. Master the influencing factors of cutting force
遼字石油化工大學⊙ Instructional objectives 5. Understand the generation and conduction of cutting heat, the measurement of cutting temperature. Master the main factors affecting the cutting temperature. Understand the cutting fluid. Master the influence of cutting temperature on the workpiece tool and the cutting process 6. Understand the form and reason of tool wear Understand the process of tool wear and blunt standards, the empirical formula of tool life, grasp the concept of tool life, tool life factors 7. Understand the machinability of metals and master the selection principle of cutting parameters
5.Understand the generation and conduction of cutting heat, the measurement of cutting temperature. Master the main factors affecting the cutting temperature. Understand the cutting fluid. Master the influence of cutting temperature on the workpiece tool and the cutting process. 6.Understand the form and reason of tool wear. Understand the process of tool wear and blunt standards, the empirical formula of tool life, grasp the concept of tool life, tool life factors. 7.Understand the machinability of metals and master the selection principle of cutting parameters. Instructional objectives
遼字石油化工大學⊙ This chapter is an introduction to the fundamentals of the machining proces-ses and presents the basic concepts relevant to all machining operations The chapter opens with a discussion of the cutting tools, mechanics of chip formation in machining and the calculation of force and power in the machining Temperature rise in chip cutting tool are then dicussed Mechanisms of tool tear and failure follow. with flank wear characterized by th-e Taylor tool-life equation Crater wear nose wearand other forms of wear are also described The chapter ends with a discssion of surface finish, the integrity of parts produced by machining, and the factors involved in the machinability of various metallic materials
This chapter is an introduction to the fundamentals of the machining proces-ses and presents the basic concepts relevant to all machining operations. The chapter opens with a discussion of the cutting tools,mechanics of chip formation in machining and the calculation of force and power in the machining. Temperature rise in chip cutting tool are then dicussed. Mechanisms of tool tear and failure follow,with flank wear characterized by th-e Taylor tool-life equation. Crater wear,nose wear,and other forms of wear are also described. The chapter ends with a discssion of surface finish,the integrity of parts produced by machining,and the factors onvolved in the machinability of various metallic materials
遼字石油化工大學⊙ 2.1 Introduction of the Cutting tools A Cutting Processes Cutting processes remove material form the surface of a workpiece by producing chips. Some of the more common cutting processes, illustrated in the Figs as follows Depth of fa) staight turnng (b) Cutin ott Chip fe) Slab IAE Ia.I Some examples of common machining HGURE 13.2 Schematic illustration of the turning operation, showing, various features
2.1 Introduction of the Cutting Tools A.Cutting Processes: Cutting processes remove material form the surface of a workpiece by producing chips.Some of the more common cutting processes,illustrated in the Figs as follows: