MANUFACTURING OF CUTTING TOOL
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#1
03-03-2011, 09:25 AM


PRESENTED BY:
BRIJESH KUMAR SINGH


.pptx   CUTTING TOOL.pptx (Size: 626.58 KB / Downloads: 350)
CUTTING TOOL
A cutting tool(cutter) is any tool that removes material from workpiece by means of shear deformation.
Type of cutting tool
 Single point cutting tool
 Multipoint cutting tool
CUTTING TOOL PROPERTIES
 It should be harder than workpiece material.
 It should be tough.
 It should have very high hot hardness
 It should have very low thermal expension coefficient.
 The tool should be able to withstand the heat generated in the metal cutting process .
TOOL MATERIALS
Cutting tool materials are divided into two categories
 Stable tool materals .
 unstable tool materals .
 Stable materials are substances that remain relatively stable under the heat produced by most machining conditions.
 Unstable materals are substances that increases its hardness at the expense of original toughness.
 Commonly used cutting tool materials are;
(a) High speed steel – Composition of HSS is 18% W, 4%Cr, 1%V, .7%C and rest Fe.
(b) Stellite – (40 to 50%)Co, Cr(27 to 32%),W(14to 19%) and 2%c.
© Ceramics – Sintered product – primarily of fine grain ,high purily Al2O3 . They are called Alluminium base ceramics .
TiC and Zr2O3 + ZrO2 are added to improve surface property.
TOOL GEOMETRY
 Tool geometry for single point cutting tool .
Seven elements are used to
describe the geometry of a
Single point cutting tool.
Defined in five system
• ASA System
• ORS System
• DIN System
• NRS System
• MRS System
MANUFACTURING PROCESS
 Manufacturing of single point cutting tool.
Step 1: Tool body is generated (generally made of steel) by route process (Mixing of annealed water atomized hss powders , graphite and lubricant + uniaxial pressing in a closed die + heat treatment).
Step 2: According to tool geometry ,it is framed .
Step 3: Cutting edges made of hard material (like diamond ,inserts etc) are attached by brazing ,clamping ,and welding on tool body.
SINGLE POINT CUTTING TOOLS
TOOLS SINGLE POINT DIAMOND
DRESSER
BORING BAR
LATHE TOOL
TOOL GEOMETRY

 Tool geometry for multipoint cutting tool .
• Geometry for drill bit.
MANUFACTURING PROCESS
 Manufacturing process for multipoint cutting tool .
Example drill bit.
• Step 1: Flat end of cylindrical rod transformed into a gently- sloping, cone-shaped tip.
• Step 2: Cutting flutes – Flutes are cut by using a circular saw made of ceramics heavy duty diamond.
• Step 3 : Drill bit is coated with Titanium Nitride to make drill bit more durable by a process called “Physical Vapour Deposition”(PVD) .
MULTIPOINT CUTTING TOOLS
MULTIPOINT DIAMOND DRESSER
MULTIPOINT DIAMOND DRESSER DRILL CUTTER
APPLICATION

Cutting tools are generated to do production at vast level.
Various operation performed by mordern cutting tool are-
• Surfacing
• Cutting
• Chamfering
• Drilling
• Boring
• Reaming
• Slot cutting
• Threading
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#2
07-09-2012, 02:46 PM

I am Abhay khot i want detailes for how to design drills end mill reamer for differnt materials
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#3
12-10-2012, 11:57 AM

i would like to know the manufacturiung process of tooling files.
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23-02-2013, 01:02 PM

MANUFACTURING OF CUTTING TOOL


.docx   MANUFACTURING.docx (Size: 433.05 KB / Downloads: 24)

ABSTRACT

The tool is wedge shape object of hard material. It is usually made from H.S.S. Beside H.S.S. machine tool is also made from High Carbon Steel, Satellite, Ceramics, Diamond, Abrasive, etc. The main requirement of tool material is hardness. It must be hard enough to resist cutting forces applied on work piece. Hot hardness, wear resistance, Toughness, Thermal conductivity, & specific heat, coefficient of friction, are other requirement of tool material. All these properties should be high.
We discuss about tool material in another thread very soon.

Single point cutting tool geometry

The single point cutting tool mainly consist of tool shank & cutting part called point. The point of cutting tool is bounded by cutting face, end flank, side/ main flank, & base. The chip slide along the face.
The side / main cutting edge ‘ab’ is formed by intersecting of face & side / main flank
The end cutting edge ‘ac’ is formed by the intersection of end flank & base.
The point ‘a’ which the intersection of end cutting edge & side cutting edge is called nose
Mainly the chip cuts by side cutting edge.

Designation of cutting tool / Tool signature

Tool signature is the description of the cutting part of the tool. There are two system for tool signature.
1. Machine reference system (or American Standard Association system) (ASA)
2. Tool reference system (or Orthogonal rake system) (ORS)
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