Measures to eliminate machining faults of end mill

Fault
Occurrence situation
Measures
The machined
surface is not good
The surface is smooth, but there
are concaves and convexes
●Reduce feed.

●If it is double-flute, change it to 4-flute.
Chips are short and thin,
but there are sticky chips.
● Increase cutting speed.

●Use wet or compressed air (increase flow)

●Make miniature rounding passivation treatment.

●Change from conventional milling to climb milling.

● Increase feed or cutting allowance.
There are cross cutting marks
●Make miniature rounding passivation treatment.

●Use non-water soluble cutting fluid.

●Change from climb milling to conventional milling
There are excess cutting
marks left.
●Reduce cutting allowance.

●Increase cutting speed.

●Reduce feed.
Profile precision
is not good.
 The size of finish machining
is smaller.
● Change from conventional milling to climb milling.

●Reduce cutting allowance.

●Replace chuck or spring collet.

●Reduce overhanging volume of end mill.

●Increase cutting speed
Square trowel is not good.
●Reduce cutting allowance.

●Replace chuck or spring collet

●Reduce overhanging volume of end mill.

●Increase cutting speed.

●Change from double-flute to 4-flute.

●Reduce feed.

●Check wear, replace tools.
Vibrating
  
●Increase feed (reduce if more than 0.04mm/tooth)

●Try changing cutting speed.

●Replace chuck or spring collet.

●Reduce overhanging volume of end mill.

●Rough milling uses double-flute, finish milling uses 4-flute.

●Change from climb milling to conventional milling.

Measures to eliminate machining faults of end mill

◆General shank standard
  
  ·DIN 6535-HA
2 3 4 5
6
8
10
12 14
16 18
25
32
L7
+2
0
28
36
40
45
48
50
56
60

　　　·DIN 6535-HB

d1 h6

b1 +0.05
0

e1 0
hhhh-1
h1 h11

L1 +2
fg0

L2 +1
gg0
6
4.2
18.0
5.1
36.0
8
5.5
6.9
10
7.0
20.0
8.5
40.0
12
8.0
22.5
10.4
45.0
14
12.7
16
10.0
24.0
14.2
48.0
18
16.2
20
11.0
25.0
18.2
50.0
25
12.0
32.0
23.0
56.0
17.0
32
14.0
36.0
30.0
60.0
19.0

 

　　　·DIN 6535-HE

d1
(b)
(b1)
(h1)
(h2)
L1
L4
L5
R
6.0
4.3
..
5.1
..
36.0
25.0
18.0
1.2
8.0
5.5
..
6.9
..
10.0
7.1
..
8.5
..
40.0
28.0
20.0
12.0
8.2
..
10.4
..
45.0
33.0
22.5
14.0
9.1
..
12.7
..
16.0
10.1
..
14.2
..
48.0
36.0
24.0
1.6
18.0
10.8
..
16.2
..
20.0
11.4
..
18.2
..
50.0
38.0
25.0
25.0
13.6
9.3
23.0
24.1
56.0
44.0
32.0
32.0
15.5
9.9
30.0
31.2
60.0
48.0
35.0

 
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