single point tool

1. ‫معدات‬ ‫و‬ ‫أساليب‬‫تشغيل‬(1)
Machining Techniques & Equipment (1)
Lecture No. (2)
Single point tool
Faculty of Engineering
Prod. Eng. And Mech. Design Department
Dr. Rania Mostafa

2. 2
Outline
• Cutting parameters
• Single point tool definition and its terminology
• Center lathe parts
• Turning operations
• Tool and work holders

3. 3
Cutting Parameters
The cutting parameters for any cutting process
are:
 Cutting speed
 Feed
 Depth of Cut.
The selection of cutting parameters depends on:
 The tool and work-piece materials
 Machining process
 Machining operation
 Degree of finishing
 Tool type

4. 4
Cutting parameters
• The primary motion is the main motion
provided by a machine tool or manually to
cause relative motion between the tool and
work-piece so that the face of the tool
approaches the work-piece material.
• Cutting speed is the instantaneous
velocity of the primary motion of the selected
point on the cutting edge relative to the work-
piece.

5. 5
Cutting parameters
• The feed motion (often referred to as the feed
rate) is a motion provided by a machine tool or
manually to cause the additional relative
motion between the tool and the work-piece, which,
when added to the primary motion, leads to
repeated or continuous chip removal and thus
creation of a machined surface with the desired
geometric characteristics.
• The resultant cutting motion is the motion
resulting from simultaneously applying the
primary and feed motions.

6. 6
Single point tool
• Single point tools are cutting tools having
one cutting part (or chip producing element)
and one shank.
• They are commonly used in lathes, turret
lathes, planers, shapers, boring mills, and
similar machine tools.
• the feed motion setting on the lathe is the
distance moved by the tool during each
revolution of the work-piece.

7. 7
1- Turning process

8. 8
Single point tool angles

9. 9

10. 10
Tool terminology

11. 11
Engine Lathe (center lathe)

12. 12
Kinematics System And Working Principle Of Lathes

13. 13
Centre Lathes Operations
 Facing
 Centering
 Rough and finish turning
 Chamfering, grooving, etc
 Axial drilling and reaming by holding the cutting tool in
the tailstock barrel
 Taper turning
 Boring (internal turning); straight and taper
 Forming; external and internal
 Cutting helical threads; external and internal
 Parting off
 Knurling

14. 14
Machining Operations using Centre Lathes
• Longitudinal Turning
• Facing

15. 15
Machining Operations in Centre Lathes
Grooving
Parting
taper

16. 16
• Threading
• Drilling
Machining Operations in Centre Lathes

17. 17
• Boring
Reaming
Tapping
Machining Operations in Centre Lathes

18. 18
Knurling chamfering
contour forming

19. 19
Different shapes of tool

20. 20
Work surfaces
The work-piece has three important surfaces:
1- The work surface, the surface on the
work-piece to be removed by machining
2- the machined surface, the desired
surface produced by the action of the cutting
tool
3- The transient surface, the part of the
surface formed on the work-piece by the
cutting edge and removed during the
following revolution of the tool or work-piece.

21. 21
Work holding devices
3-Jaw chuck
4-Jaw chuck Circular faceplate
Two centers and Dog

22. 22
Work holding devices

23. 23
Tool holders

24. 24
THANK YOU