Základní typy obrábění

What are the basic types of machining processes?

• Conventional material removal processes

• Non-conventional material removal processes

• Automatic machining processes

• Hybrid machining processes

What is characteristic of conventional machining processes?

• They use mechanical sources of energy

• They use chemical sources of energy

• The tool is in direct contact with the workpiece

• Material removal occurs without contact with the tool

What types of tools are used in conventional cutting?

• Tools with defined cutting edge geometry

• Tools with undefined cutting edge geometry

• Tools using chemical reactions

• Tools with one or more cutting edges

What is characteristic of grinding?

• Use of tools with undefined cutting edge geometry

• Material is removed in the form of microchips

• The tool is not in contact with the workpiece

• Chemical energy is used

When were non-conventional machining processes developed?

• After 1940

• Before 1940

• In the 19th century

• During the industrial revolution

What is characteristic of non-conventional machining processes?

• They use physical, electrical, and chemical sources of energy

• The tool is always in direct contact with the workpiece

• Material removal occurs in the form of micro and nano particles

• They only use mechanical energy

What are the basic conditions for mechanical machining?

• The tool material must be harder than the workpiece material

• Mechanical energy must be applied to break the material's cohesion

• The tool must be made of ceramics

• The energy source must be converted to mechanical energy

What are the differences between grinding and cutting?

• The tool has an indefinite number of cutting edges

• The chips are very small, often invisible

• The tool is always in direct contact with the workpiece

• High cutting speeds (30–100 m/s)

What energies are used in progressive machining technologies?

• Electrical energy

• Thermal energy

• Chemical energy

• Mechanical energy only

What are the advantages of progressive machining technologies?

• No cutting resistance and cutting force

• Material removal is independent of the mechanical properties of the material

• Always require low energy consumption

• Leads to micro-machining and achieving 'nano' dimensions