basic types of chip in machining
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Answer:
Simple definition is “Machining is a semi finishing or finishing process essentially done to convert work piece in to desire shape and size.”
Under machining process excess material from the work piece is removed in the form of chips.
The form of chips is an important index of machining because it directly or indirectly indicates :-
Nature and Behavior of material under machining process
Amount of energy require to remove material (specific energy requirement)
Nature and degree of interaction at the chip-tool interfaces.
The chips are depend on :-
Work material or nature of work piece
Geometry and material of cutting tool (Nature of tool)
Level of cutting velocity and feed rate
Machining environment or cutting fluid
Dimension of tool
Friction between tool and work piece
Types of chips :-
Different types of chips of various size ,shape ,color etc are formed during machining process and this all depend on:-
Types of cut, i.e., Continuous (boring, turning etc) or intermittent cut (milling)
Workpiece material (ductile or brittle etc.)
Geometry of cutting tool(rake, cutting angles etc.)
Cutting velocity feed rate (Low , medium , High )
Cutting fluid
Basic major types of Chips are:-
Continuous Types Chips:-
According to its name, continuous chips are formed by continuous plastic deformation of metal without fracture in front of the cutting edge of the tool and are formed by the smooth flow of the chip up the tool face.
Ductile material like aluminium , mild steel , copper,are considered to be best for continuous type chips.
this type of chips provide good surface finish
Require condition to form continuous type chips:-
Material should be ductile in nature
Rake angle and cutting speed should be high
Friction should be minimum
Deft of cut should be small
Use of efficient cutting lubricants
Tool material should have low-coefficient of friction