1. COMMON OPERATIONS LATHE MACHINE

2. LATHE MACHINE

3. INTRODUCTION COMMON OPERATIONS KNURLING RECESSING
LATHE MACHINE
POINTS COVERED
INTRODUCTION
COMMON OPERATIONS
KNURLING
RECESSING

4. LATHE MACHINE INTRODUCTION A MACHINE TOOL IS A POWER DRIVEN APPARATUS
DESIGNED TO PERFORM METAL CUTTING BY VARIOUS TYPES OF CUTTING TOOLS
MOSTLY THE MACHINED SURFACES ARE REQUIRED TO BE CYLINDRICAL OR FLAT
THE WORK OF MACHINE TOOLS IN GENERAL IS CONCERNED WITH PRODUCING ONE OR BOTH

5. LATHE MACHINE INTRODUCTION THE LATHE IS A MACHINE TOOL
REMOVES THE METAL FROM A PIECE OF WORK TO GIVE THE REQUIRED SHAPE AND SIZE.
BY HOLDING THE WORK SECURELY AND RIGIDLY ON THE MACHINE AND THEN TURNING IT AGAINST CUTTING TOOL
REMOVE METAL FROM THE WORK IN THE FORM OF CHIPS.

6. LATHE MACHINE KNURLING
PROCESS OF EMBOSSING A DIAMOND SHAPE PATTERN ON THE SURFACE OF A WORK PIECE.
PURPOSE OF KNURLING IS TO PROVIDE AN EFFECTIVE GRIPPING SURFACE ON A WORK PIECE

7. LATHE MACHINE KNURLING TO PREVENT FROM SLIPPING WHEN OPERATED BY HAND.
IN SOME PRESS FIT WORK KNURLING IS DONE TO INCREASE THE DIAMETER OF A SHAFT.
OPERATION IS PERFORMED BY A SPECIAL KNURLING TOOL

8. LATHE MACHINE KNURLING
CONSISTS OF A SET OF HARDENED STEEL ROLLERS IN A HOLDER WITH THE TEETH CUT ON THEIR SURFACE IN A DEFINITE PATTERN.
KNURLS ARE AVAILABLE IN COARSE, MEDIUM AND FINE PITCHES.

9. LATHE MACHINE RECESSING ALSO BE CALLED AS GROOVING OR NECKING.
TOOLS ARE SOMETIMES CALLED NECKING TOOLS.
TOOLS MAY BE EITHER STRAIGHT OR BENT SHANK TYPES.

10. LATHE MACHINE RECESSING
RECESS IS USUALLY NARROW, THE CUTTING EDGE IS KEPT NARROW.
TOOL IS RELIEVED BY 1O TO 2O ON EACH SIDE TOWARDS THE SHANK.
SIDES ARE RELIEVED TO MAKE THE TOOL FREE CUTTING.

11. LATHE MACHINE RECESSING
RAKE ANGLE SHOULD BE DECREASED OR THE FACE SHOULD BE MADE HOLLOW TO THE RADIUS.
THE TOOL SHOULD BE SET EXACTLY IN CENTRE.
TOOL IS SET BELOW OR ABOVE THE CENTRE, IT WILL BREAK.

12. THANK YOU