Introduction to Milling Machines
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Questions and Answers

What is the primary purpose of a milling machine?

  • Welding pieces of metal together
  • Polishing metal surfaces
  • Removing metal by feeding the work against a rotating cutter (correct)
  • Drilling holes in metal surfaces

    • Which type of milling machine is designed to move up and down accurately?

  • Special type milling machine
  • Planer type milling machine
  • Column and knee type milling machine (correct)
  • Table type milling machine

    • Why is a plain milling machine also called a horizontal milling machine?

  • Because it is more commonly used for horizontal surfaces
  • Because the cutter rotates in a horizontal plane (correct)
  • Because it can rotate the workpiece horizontally
  • Because it has a horizontal table

    • What is mounted vertically upon the base in a column and knee type milling machine?

    <p>Column</p> Signup and view all the answers

    In a plain milling machine, how is the work moved against the rotating cutter?

    <p>Vertically, longitudinally, and crosswise</p> Signup and view all the answers

    Which feature distinguishes a universal milling machine from an omniversal milling machine?

    <p>Types of work that can be machined</p> Signup and view all the answers

    What is the classification of milling operation based on the direction of workpiece movement in relation to the cutter rotation?

    <p>Conventional milling and climb milling</p> Signup and view all the answers

    Which milling method tends to lift the workpiece from the fixtures and makes it difficult to pour coolant on the cutting edge?

    <p>Conventional milling</p> Signup and view all the answers

    What type of milling allows the coolant to directly reach the cutting point, resulting in high-quality surface finish?

    <p>Down milling</p> Signup and view all the answers

    Which cutter holding device is characterized by having a threaded nose on one end and a taper shank on the other end?

    <p>Screwed arbour</p> Signup and view all the answers

    What is the purpose of milling machine attachments?

    <p>To develop versatility and accuracy of machining process</p> Signup and view all the answers

    Which attachment is specifically intended for cutting gears, ratchet wheels, keyways, fluted drills, taps, and reamers?

    <p>Indexing head attachment</p> Signup and view all the answers

    What is the purpose of an indexing head in milling operations?

    <p>To hold and index the work for specific tasks like cutting gears</p> Signup and view all the answers

    What is a feature of the universal dividing head among different types of indexing heads?

    <p>It can be used for a variety of indexing operations.</p> Signup and view all the answers

    Which mechanism enables an indexing head to accurately rotate a workpiece to a required amount during indexing?

    <p>Gear train between the main spindle and driven shaft</p> Signup and view all the answers

    What does differential indexing method achieve during indexing operations in a milling machine?

    <p>It allows for more than one rotation of the index plate for each rotation of the crank.</p> Signup and view all the answers

    What type of milling machine can perform helical milling works due to the ability to swivel the table by 45º on either side?

    <p>Universal milling machine</p> Signup and view all the answers

    Which milling machine is useful for machining helical grooves, reamer, and bevel gears due to the ability to tilt the knee to a required angle?

    <p>Omniversal milling machine</p> Signup and view all the answers

    In a column and knee type milling machine, which part houses the mechanism for providing drive for the spindle?

    <p>Column</p> Signup and view all the answers

    What part of a universal milling machine supports all the other parts of the machine tool and is made of cast iron?

    <p>Base</p> Signup and view all the answers

    Which part of a universal milling machine moves in a cross direction and is mounted on the knee?

    <p>Saddle</p> Signup and view all the answers

    What part of a vertical milling machine supports the arbour from the top of the column and is useful when using special attachments?

    <p>Overhanging arm</p> Signup and view all the answers

    Which milling machine has a spindle positioned at right angles to the table and is adapted for machining slots and flat surfaces?

    <p>Vertical milling machine</p> Signup and view all the answers

    What is used to control the movement of the table in a universal milling machine?

    <p>'T' - dogs</p> Signup and view all the answers

    'Angular surfaces are machined by swiveling the spindle head' pertains to which type of milling machine?

    <p>Vertical milling machine</p> Signup and view all the answers

    Which part of a column and knee type milling machine holds an overhanging arm that supports the arbour?

    <p>Column</p> Signup and view all the answers

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