types of chips in metal cutting |chip formation and types of chips
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- เผยแพร่เมื่อ 27 ส.ค. 2024
- #modimechanicalengineeringtutorials,
#mechanicalmagicmechanicallearningtutorials,
in this video is about fundamental of metal cutting processs, during metal cutting development of different types of chips continuous and discontinuous chip with theory as well as an experiment carry on lathe machine to form continuous and discontinuous chips.
Conventional machining operation always produces some chips. The nature of the chips depend on
operation
properties of the workpiece material
cutting environment
The cutting tool has to overcome the resistance of the work material to give it a desired shape. So cutting tool must be more harder, wear resistance than the w/p. The main reason for the chip formation is due to the deformation by shear stress. This stress is applied to metal lying ahead of the cutting edge of the tool . Four main types of chips in machining process are -
Discontinuous Chips
Continuous or Ribbon Type Chips
Continuous Chip Built-up-Edge (BUE)
Serrated Chips
Discontinuous Chips:
Main reason of discontinuous chip formation is the deformation due to repeated fracturing. Hard and brittle metals like C.I , bronze and brass are prone to produce discontinuous chips. These are small pieces which are loosely connected to each other.
Continuous or Ribbon Type Chips:
In this type of chip formation the chips are bonded together and form long coils. These are continuous chips which undergo continuous plastic deformation. There isn’t any fracture ahead of the cutting edge of the tool. The inside part of the chip shows steps due to intermittent slip. The outside is smooth.
Continuous Chip Built Up Edge:
These are very similar to the ribbon type chips but it is not as smooth as those. These chips are seen in the workpieces with poor surface finish. These chips protect the cutting edge from wear because of the chips movement. The tool life increases by the action of heat.
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Thanks for this great and useful explanation sir..
Thanks
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Very useful
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Thank you.
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Thanks for your explanation
Thanks for appreciation
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What is discuntune चिप are in folling 1) नट, bolt, स्क्रू, or aal of these