Page 99 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

Drawing Tool

Objectives : At the end of this exercise you shall be able to
• able to select materials for Tool
• able to Machining Operation on Tool (workpiece)
• able to heat treatment on required parts of Tool
• able to assemble tool part of tool
• know about safety precautions.

Requirements

Tools/Instruments
• Try square • Milling machine
• verniers caliper • Grinding machine
• verniers hight gauge • Drill press Cutting tools (end mills, drills, taps)
• Files • Materials (tool steel, carbide inserts, etc.)
• Lathe machine • Safety gear (goggles, gloves, ear protection)

Procedure

Introduction
1 Making a Forming Tool for forming profile compone.

2 Machine and personal safety precautions.
In drawing, a flat blank is transformed into a cup or shell. The parent metal is subjected to severe plastic deform

Procedure (DO) Information points/ safety precautions (Tell/Show)

• Determine the specifications of the drawing tool based on the desired dimensions
Design Phase and materials of the final product.
• Create detailed CAD drawings and simulations to ensure the tool’s functionality and
durability.

• Choose a suitable material for constructing the drawing tool, considering factors such
Material as hardness, toughness, and wear resistance.
Selection • Common materials for drawing tools include tool steel, carbide, and various alloys.

• Start with a block of chosen material and cut it to the required size for machining.
Blank • Perform any necessary heat treatment processes such as annealing or tempering to
Preparation optimize the material’s properties for machining.

• Use CNC milling machines or lathes to remove excess material from the blank,
Rough shaping it closer to the final dimensions of the drawing tool.
Machining
• Rough machining operations may include milling, turning, or grinding depending on
the complexity of the tool design.

• Perform precision machining operations to achieve the final dimensions and surface
Finish finish of the drawing tool.
Machining
• Use specialized cutting tools and techniques to ensure tight tolerances and smooth
surfaces on critical features.
• Subject the drawing tool to heat treatment processes such as hardening and
Heat Treatment tempering to enhance its hardness, strength, and durability.

• Follow specific heat treatment cycles recommended for the chosen material to
achieve the desired properties

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CITS : C G & M - Fitter - Exercise 68