474
Geometry of Single-point Turning Tools and Drills
Table B.12. Significance of the symbols for reference (1)
Appendix B: ANSI and ISO Turning Indexable Inserts and Holders
Fig. B.6. Case 2. Inserts
2 Basics Definitions and Cutting Tool Geometry, Single Point Cutting Tools
119
a 2 = i tan n 2 k
(2.120)
m=j
(2.121)
As these vectors are coplanar (belong to the same plane), their scalar triple produ
456
Geometry of Single-point Turning Tools and Drills
where K is the strength coefficient (N/m2) and n is the hardening exponent of the
work material, is the chip compression ratio [13, 18], and Aw is
Viktor P. Astakhov, PhD
Michigan State University
Department of Mechanical Engineering
2453, Engineering Building
East Lansing
MI 48824-1226
USA
[email protected]
ISSN 1860-5168
ISBN 978-1-84996-052-6
Rs =
n
i + i
xyi
+
i=
zyi
i + i
xyi
i + i
i=
n
i=
xyi
i=
n
=
n
i + i
5 Deep-hole Tools
351
This sheme is used when the workpiece has a shape that not suitable for its
rotation. The use of this met
52
Geometry of Single-point Turning Tools and Drills
[45] Atkins AG (2003) Modelling metal cutting using modern ductile fracture mechanics:
qualitative explanations for some longstanding problems. Int
32
Geometry of Single-point Turning Tools and Drills
1.5 Fundamental Laws of Metal Cutting
1.5.1 Optimal Cutting Temperature Makarows Law
1.5.1.1 Formulation
The First Metal-Cutting Law (Makarows law)
378
Geometry of Single-point Turning Tools and Drills
Thus the flank angles in the back, Pp the assumed working, Pf planes correlate as
tan p r =
tan f r
(5.45)
tan p 23
Consider now the location part
Appendix C: Basics of Vector Analysis
511
Example C.3.
Problem: Lets the coordinate system shown in Fig. C.11 is T-mach-S of a drill
while cutting edge AB is a part of the major cutting edge (Chapter
4 Straight Flute and Twist Drills
219
4.5.3 Drilling Torque
The drilling torque is a function of the work material properties, drill diameter and
geometry, and the drilling regime. Among these factors
424
Geometry of Single-point Turning Tools and Drills
10
13
9
12
7
12
8
11
P
4
1
5
3
6
2
Fig. 5.74. Model of MWF flow in a gundrill with the auxiliary side passage
Flank adjacent to the
outer cutting
410
Geometry of Single-point Turning Tools and Drills
SECTION B-B
SECTION A-A
8
A
20
B
15
25
7.94
SECTION C-C
B
31.75
A
116
7
D
25
1.8
View D
C
C
1.2
Fig. 5.59. Gundrill with parameters calculated in
3 Fundamentals of the Selection of Cutting Tool Geometry Parameters
(a)
155
(b)
Fig. 3.21. Wear of the detachable supporting pads of a deep-hole drill: (a) wear patter when
backtaper is optimal, and (
Appendix D: Hydraulic Losses: Basics and Gundrill Specifics
543
machining with shallow cutting feeds. Moreover, curving the chip, the additional
force Fjet reduces the tool-chip contact length and imp
4 Straight Flute and Twist Drills
339
[36] Webb PM (1993) The three-dimensional problem of twist drilling. Int. J. of Prod. Res.
31(5):12471254
[37] Fujii S, DeVries MF, Wu, SM (1970) An analysis of d
440
Geometry of Single-point Turning Tools and Drills
than, any other system which satisfies the given constraints. The term suboptimal is
used to describe any system, which is not optimal (with respe
4 Straight Flute and Twist Drills
249
Fig. 4.47. Enhancing chip rigidity by providing ribs on the drill rake faces
However, it is often not sufficient to obtain the desirable chip shape and to avoid
s
400
Geometry of Single-point Turning Tools and Drills
Fig. 5.54. Graphic modeling of the conditions of drill free penetration
5.6.4.5 Conditions of Free Penetration
To understand these conditions, one
Appendix D: Hydraulic Losses: Basics and Gundrill Specifics
531
point b corresponds to the inlet of the coolant unit, R2 represents its
resistance.
a
+ I
V
m
I
R1
R10
b
k
R2
R9
c
i
R3
R8
d
h
R4
e
R7
g
4 Straight Flute and Twist Drills
313
The normal to each flank plane can be determined using the cross product of two
known vectors belonging to this plane (Fig. C.7, Appendix C). In the considered
ca
362
Geometry of Single-point Turning Tools and Drills
resistance. Another problem, however, has emerged: how to select the proper grade
for the given application from the great variety of available gr
4
Straight Flute and Twist Drills
Make everything as simple as possible, but not simpler.
Albert Einstein (18791955)
Abstract. This chapter discusses classification, geometry, and design of straight f
488
Geometry of Single-point Turning Tools and Drills
There are two options:
Single digit letter symbol see Table B.26. Designates the length of the cutting
edge in comparison to the standard length.
380
Geometry of Single-point Turning Tools and Drills
Because vectors afr, pm, and avr belong to the same flank plane, their scalar triple
product is equal to zero (Appendix C), i.e.,
a f r ( p m av r
4 Straight Flute and Twist Drills
207
Long drills drills having length-to-diameter ratio exceeds 10.
Classification based on number of flutes
Single-flute drills those having only one flute, e.g., gun
4 Straight Flute and Twist Drills
305
Fig. 4.101. Chisel edge geometry parameters for the grind shown in Fig. 4.100
Figure 4.102 shows a drill ground with the geometry parameters shown in Fig.
4.100.
Appendix D: Hydraulic Losses: Basics and Gundrill Specifics
539
Fig. D.14. Cross-sections of two carbide sticks having the same diameter (8.85 mm)
SECTION A-A
ENLARGED
A
A
dcp
vcp
Bottom of the
hole b
4 Straight Flute and Twist Drills
279
Fig. 4.78. Influence of the distance cct and the helix angle, d on the distribution of the
normal rake angle
4.8.3.5 Example 4.1
Compare the distributions of the
416
Geometry of Single-point Turning Tools and Drills
end in the axial direction. This flank and the bottom of the hole being drilled form
the step shown in Fig. 5.65c. In the simplified stepped (squa