What is the function of a shank in a broaching machine?

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RRB JE ME 22 Apr 2025 Shift 1 CBT 2 Official Paper
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  1. Removes chips and coolant from the cutting area
  2. Breaks up the chips generated during the broaching process
  3. Holds the broach in place and gives it a rotary motion
  4. Guides the broach through the material and maintains tool alignment

Answer (Detailed Solution Below)

Option 4 : Guides the broach through the material and maintains tool alignment
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Detailed Solution

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Explanation:

Broaching:

  • Broaching is a machining process where a sharp, hardened, toothed tool removes material from a workpiece in a consistent, continuous, and accurate way.
  • This is the process in which a tool is pushed or pulled through a hole or surface.
  • The process of broaching uses a tool with raised teeth of differing sizes that precisely cut away a specified amount of material with every pass over the workpiece.
  • In broaching, the multi-cutting tool moves while the workpiece remains static, or the workpiece moves while the tool is static.
  • In some cases, there may be relative rotation between the tool and the workpiece.
  • The broaching process can be internal through the center of the workpiece or external across the surface of the workpiece.
  • Broaching is a machining process that uses a toothed tool, called a broach, to remove material.
  • There are two main types of broaching: linear and rotary. In linear broaching, which is the more common process, the broach is run linearly against the surface of the workpiece to affect the cut.
  • In a broaching machine, the shank is a non-cutting part of the broach used to mount and guide the broach.
  • It ensures proper alignment of the broach with the workpiece and provides support as the tool is pulled or pushed through the material.
  • Unlike a cutting tooth or chip breaker, it does not perform cutting or rotation.

F1 S.S. N.J 13.08.19 D1

F1 S.S. M.P 13.08.19 D1

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