Types of Sawing Machines
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This presentation discusses different types of sawing machines used for cutting metal. It covers reciprocating saws, band saws, and circular saws. Reciprocating saws, also called power hacksaws, use a blade that moves back and forth through the workpiece. Band saws have an endless blade running over two wheels that can cut in any direction. Circular saws cut using a revolving disc blade and come in varieties like cold saws, friction discs, and abrasive discs. The presentation provides details on the components, operation, and applications of these common metal sawing machine types.
Types of Sawing Machines
- 1. PRESENTATION ON TYPES OF SAWING MACHINES GUIDED BY:- Prof. CHANDRAKANT BHATIA MANUFACTURING PROCESS 1 SUBMITTED BY: HIMANSHI GUPTA(140120119057) / ME / A1 PRACHI SHARMA(140120119216) / ME / A1 VIDISHA VYAS(140120119253) / ME / A1 (2131903) GA N D H IN A GA R IN STITU TE OF TEC H N OLOGY
- 2. METAL SAWING • Materials like wood and metals are often cut using sawing machines. • Metal sawing is like any other metal processing method and it is governed by similar cutting requirements. • Advantages of sawing machine: 1. Speed of cutting 2. Low wastage of material 3. Good quality of dimensional accuracy 4. Low power consumption
- 4. SAW • Multipoint cutting tool • Large number of teeth move through the work piece • Each successive tooth deepens the cut made by its predecessor tooth • Feed is given either to the saw or the work piece • Straight or curved profile may be cut by controlling the direction of feed motion
- 5. SAW • Saws are characterized by 1. Material 2. Tooth form 3. Teeth set 4. Tooth spacing 5. Size • Good quality metal cutting saws are made of high carbon or high speed steel • Hack saw (power saw) and band saws are generally made solid
- 6. TYPES OF SAWING MACHINES In general the sawing machines are classified as : (a) Reciprocating saw (Power Hacksaw) 1. Horizontal sawing machine 2. Vertical sawing machine (b) Band saws 1. Contour band saw 2. Friction blade (c) Circular saws 1. Cold saw 2. Friction disc 3. Abrasive disc
- 7. RECIPROCATING SAW • Known as power hack saws • Consists of: 1. Saw frame 2. Means for reciprocating the saw and frames 3. Work table and vice 4. Supporting base 5. Source of power
- 8. • Most of the operations are hydraulically controlled • Both square and angular cuts can be made Operation of reciprocating saw • Machine drives a blade back and forth through a work piece, pressing down on the cutting stroke and releasing the pressure on the return RECIPROCATING SAW
- 10. BAND SAWS • Band saw consist of endless saw blade sued to a greater extent for cut off and straight sawing operations for metals • A continuous saw blade runs over the rims of two wheels on the machine
- 11. BAND SAWS CONTOUR BANDSAW • Work may be fed in any direction on the table • Direction of feed is readily controlled and changed while cutting is in process FRICTION BANDSAW • The dull blade produces great friction and the kerfs of the teeth removes small, softened particles of the work
- 13. CIRCULAR SAW • Cut by means of a revolving disc • Disc may have large teeth or no teeth COLD SAW • Has a circular blade with inserted teeth • Large diameter blades • Cuts very rapidly • Runs at relatively slow speed but very powerful • Average thickness of cut is 6mm
- 14. FRICTION DISCS • Circular blades having almost no teeth • High speed • Generate heat • Metal is removed by heat of friction • Leaves a heavier burr and less accurate surface ABRASIVE DISCS • Rubber bonded wheels rotating at high speeds are used • Cutting action is fast and accurate CIRCULAR SAW
- 16. CONCLUSION • Metal sawing is one of the inevitable operations of metal shaping • Metal sawing cuts the metal into two or more pieces as per the requirement with exact dimensional accuracy • It is categorized into different categories depending upon the profile of saw tooth
- 17. BIBILIOGRAPHY • WIKIPEDIA • www.ignou.ac.in • GOOGLE IMAGES • WORKSHOP TECHNOLOGY BY HAJRA CHOUDHARY • PRODUCTION TECHNOLOGY BY R.K JAIN