TAILIEUCHUNG - Ebook Engineering fundamentals: Part 2

(BQ) Part 2 book "Engineering fundamentals" has contents: Marking out, basic bench fitting, drilling techniques and drilling machines, centre lathe and turning techniques, milling machines and milling techniques, grinding machines and processes. | 7 Marking out When you have read this chapter you should be able to understand how to: • Identify and select marking-out tools for making lines. • Identify and select marking-out equipment for providing guidance. • Identify and select marking-out equipment for providing support. • Identify and select different types of datum. • Identify and use different co-ordinate systems. • Mark out workpieces having square, rectangular, circular and irregular-shaped sections. Marking-out equipment (tools for making lines) Marking out is, essentially, drawing on metal so as to provide guide lines for a fitter or a machinist to work to. A pencil line would not be suitable. The hard metal surface would soon make a pencil blunt and the line would become thick and inaccurate; also a pencil line is too easily wiped off a metal surface. Usually the line is scribed using a sharp pointed metal tool, such as a scriber, that cuts into the surface of the metal and leaves a fine, permanent line. Scriber This is the basic marking-out tool. It consists of a handle with a sharp point. The pointed end is made from hardened steel so that it will stay sharp in use. Engineers’ scribers usually have one straight end and one hooked end, as shown in Fig. . It is essential that the scribing point is kept sharp. Scribing points should not be sharpened on a grinding machine. The heat generated by this process tends to soften the point of the scriber so that it soon becomes blunt. The scribing point should be kept needle sharp by the use of an oil stone (see Fig. ). Figure Scriber Centre and dot punches Typical centre and dot punches are shown in Fig. . They are used for making indentations in the surface of the metal. There are two types of punch. Figure (a) shows a dot punch. This has a relatively fine point of about 60◦ or less and is used for locating the legs of such instruments as dividers and trammels. Figure (b) shows a centre punch. This is heavier than

• Cơ khí - Chế tạo máy
• Engineering fundamentals
• Marking out
• Basic bench fitting
• Drilling techniques
• Turning techniques
• Milling machines
• Milling techniques
• Grinding machines and processes
• Lecture Fundamentals of Biochemical engineering
• Fundamentals of Biochemical engineering
• Biochemical engineering
• Chemical engineering department
• Anaerobic fermentation processes
• Sterilization of microbial medium
• General health and safety
• Establishing effective working relationships
• Handling engineering information
• Engineering materials
• Engineering drawing
• Fundamentals of engineering thermodynamics
• Getting Started
• The first law of thermodynamics
• Evaluating properties
• Control volume analysis using energy
• Gas power systems
• Heat pump systems
• Thermodynamic relations
• Ideal gas mixtures
• Psychrometrics applications
• Reacting mixtures and combustion
• Phase equilibrium
• engineering
• engineering document
• engineering ebook
• engineering specific study
• engineering research
• Embedded software engineering
• Advanced hardware fundamentals
• Understanding big picture
• Flow diagram
• Examine the landscape
• Software engineering
• Lecture Software engineering
• Software engineering
• Software metrics
• Why measure software
• Fundamentals of measurement theory
• Use case points
• Applied drilling engineering
• Kỹ thuật khoan ứng dụng
• Engineering science fundamentals
• Drilling cost analysis
• Rheological viscometer
• Rotary drilling bits
• Formation pore pressure
• Directional drilling measurements
• Principles of the BHA
• AIR POLLUTION ENGINEERING
• COMBUSTION FUNDAMENTALS
• POLLUTANT FORMATION
• INTERNAL COMBUSTION ENGINES
• PARTICLE FORMATION
• CONTROL IN COMBUSTION
• Ebook Electronic Components
• Ebook Electrical Engineering
• Fundamentals of Electric Circuits
• Ebook Electric Circuits
• Fundamentals
• Electrochemistry
• Electrodes
• Potentiometry
• Engineering Biotechnology
• Analytical Chemistry
• chemical analysis
• Fundamentals of modern manufacturing
• Material properties
• Product attributes
• Solidification processes
• Particulate processing of metals
• Metal forming
• Sheet metalworking
• Corporate finance
• Fundamentals of corporate finance
• Tài chính doanh nghiệp
• Business organization
• Financial management
• Risk management
• Financial Management Fundamentals of corporate finance
• Lecture Casting technology
• Casting technology
• Bài giảng Công nghệ đúc
• Fundamentals of metal casting
• Engineering analysis of filling
• Solidification defects
• computer engineering
• electrical engineering
• computer organization
• digital logic design
• Computer Architecture
• Language Architecture
• medical books
• Biomedical Electronics
• Medical Equipment
• TISSUE ENGINEERING
• Absorbable Biomaterials
• Composite Materials
• Technologies
• Systems Engineering
• robotic
• mechanical
• anatomy
• Public perception
• hydrogen technologies
• Hydrogen safety communication
• emerging profession
• hydrogen safety engineering
• Knowledge gaps
• future progress
• Hydrogen properties
• hazards
• Materials science
• Materials science and engineering
• Atomic structure
• Interatomic bonding
• Polymer structures
• Mechanical properties
• Strengthening mechanisms