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What are the requirements of structure in the case of machine tools?

What are the requirements of structure in the case of machine tools?

Machine tool structure are mostly designed from stiffness considerations and thus should possess high static and dynamic stiffness. As regards moving parts which travel along guide ways, the guiding and guided surfaces must have high wear resistance for high accuracy.

What are the 3 main functions of a machine tool?

Indeed, the market for cutting tools is much larger than the market for machine tools, and each kind of product is produced by its own industry. Machine tools also come in two basic types: cutting machines remove metal and forming machines shape it.

What are the characteristics of machine tools?

Characteristics of Tool Materials | Machining | Industrial…

  • Hot Hardness: ADVERTISEMENTS:
  • Wear Resistance: It is the ability to resist wear.
  • Toughness:
  • Low Friction:
  • Favourable Cost:

What are the 5 basic machines tools?

They retain the basic characteristics of their 19th- and early 20th-century ancestors and are still classed as one of the following: (1) turning machines (lathes and boring mills), (2) shapers and planers, (3) drilling machines, (4) milling machines, (5) grinding machines, (6) power saws, and (7) presses.

What are the requirements of a machine tool?

The requirements of machine tools are given bellow:

  • Strength static is high.
  • Dynamic rigidity.
  • Shape and layout of machine tool should be.
  • a. Facilitate easy chip removal.
  • b. Machining operation should be easier.
  • c. Observation of cutting operation should be safe.
  • d. Assembly should be easy and dismantling.
  • e.

What are the general requirements of machine tools?

General Requirements of the Machine Tool: Accuracy of Shape, Dimensional accuracy and surface finish of the components produced. High Productivity. High Technical and Economic Efficiency.

What are the basic function of a machine tool?

A machine tool is a machine for handling or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformations. Machine tools employ some sort of tool that does the cutting or shaping.

What is the characteristic of tool?

Cutting tools should have high strength, hardness even at higher or lower temperatures. It should not change any of the material properties (ductility, hardness, strength) in the long rung. It should have high toughness and should have the ability to withstand shock and vibration. The tool should be cheap in price.

How do you classify machine tools?

Machine Tools are broadly classified into three groups, and those are: General Purpose Machine Tools. Single Purpose Machine Tools….2. Single Purpose Machine Tools:

  1. Making of Crank Shaft.
  2. Machining of Crank-pins.
  3. Machining of gear by gear hobbing process.

What are the five basic elements of a machine tool discuss in brief?

A typical ultraprecision machine tool has five major subsystems, including a mechanical structure, a spindle and drive system, a control system, a position measurement and feedback system, and an in-process condition monitoring and inspection system.

What are the functions of a machine tool?

Machine tools refer to power devices used to process work pieces and are important equipment in the manufacturing process of mechanical parts. Machine tools are generally used for forming, cutting, and joining other tools.

Why rigidity is required in a machine tool structure?

In case of turning operation, the machine structures undergo bending and twisting in its member, which leads in causing the tool to deflect from its desired position. Hence it is desired to ensure maximum rigidity at the machine interface for optimum operation.

What is the structure of a machine tool?

Machine tool consists of machine tool structure, bed, column, housings. These are the base of machine tool on which the guideways, spindle, carriage, etc. are mounted. These elements must able to withstand at higher permissible load. These elements are discussed in detail in the following section.

Which is the best material for a machine tool?

Suitable section and proper material are the two factors mainly responsible for rigidity of any machine-tool. As regards the material, usually bed, column and frame of machine tools are made of cast iron because it possesses certain advantages over other materials.

How are machine tools used in everyday life?

Today machine tools are typically powered other than by human muscle (e.g., electrically, hydraulically, or via line shaft ), used to make manufactured parts (components) in various ways that include cutting or certain other kinds of deformation.

Why are machine tools made of cast iron?

As regards the material, usually bed, column and frame of machine tools are made of cast iron because it possesses certain advantages over other materials. (i) Cast iron possesses better lubricating property due to presence of free graphite in it and hence is most suitable for beds where rubbing is the main criterion.