ELECTRODES FOR OBLIQUE GATE
ELECTRODES FOR PIN–POINT GATE
EMPG (For processing of SR part)
EMSG
C0.5
C0.1
SR
R ≦ 0.2
30
SR
30
B
± 0.1
L
＋ 0.2 ＋ 0.1
M Material Tough pitch copper (C1100)
L
Q=2tan （ L － 30 － SR 2 ＋ 0.15 2 ）＋ P A 2
M Material Oxygen free copper (C1020)
B
Part Number
D
L
A°
Part Number
Part Number – L – A EMPG3 – 70 – A2
Type
＊ P SR 0.50 0.40 0.70 0.50 0.90 0.60 1.20 0.75 1.70 1.00
P A 10°
15°
20°
30°
P
L
A°
Type No.
Order
1.5 60
20
1.5
–
–
3.7 5.1 6.5
–
0.8
2
50 70
1 2 3
2
10.3 13.1
6.8 8.7
3.4 4.3
1
60 70
10 15 20 30
2.5
2.5
1.2 1.5
50 70 90
1 2 3
Delivery Quotation
60 70
10 15 20 30
3
3
16.0
10.6
7.9
5.2
2 50 70 901101 2 3
90
20 30
50 70 90
1 2 3
EMSG
60 70
10 15 20 30
6
2.5
2.20 1.25
4
4
21.7
14.4
10.8
7.1
110 1 2
90
20
EMPG
50 70 90
1 2 3
3
2.70 1.50
60 70
20 30
110 1 2
5
5
–
–
13.6
9.0
90
20
50 70
1 2 3
3.5
3.20 1.75
90
1 2
60 70
20 30
6
6
–
–
16.4
10.8
110 1
90
20
50 70
1 2 3
4
3.70 2.00
90
1 2
110 1
e Note that when ordering EMSG, there is no need to enter the letter A of the alphabet.
Part Number – L – A EMSG2 – 60 – 30
＊ This electrode is designed for a 0.15mm discharge gap on each side. e Because the center point of SR shifts 0.15mm from the center in one side, P dimension is 0.3mm less than nominal diameter (No.) = (2 × SR).
Order
EMPGA (For gate processing)
Delivery Quotation
C0.5
C0.1
• Oblique gates require angular hole processing that are often difficult by drilling. Electro discharging by EMSG is suitable for preparing an angular hole in places where the drill tip would not be well aligned or broken. • The d 1 dimension is dependent on the runner diameter (W). Select the appropriate P dimension in accordance with d 1 . e The electrode's tip may be bent if it is dropped or its tip directly touches other objects. If it is bent, make sure to perform dressing before using it.
Example
R ≦ 0.2
L － 30
30
L
B
M Material Oxygen free copper (C1020)
Q=2tan 1 ° （ L － 30 ）＋ P
■ B dimension choices No. B
Part Number
＊ P 0.50 0.70 0.90 1.20 1.70 2.20 2.70 3.20
L
G°
Type No.
0.8
G20 G30 G40 G50 G60 0.85 0.56 0.41 0.32 0.26 1.42 0.93 0.69 0.54 0.43 1.99 1.31 0.96 0.75 0.61 2.84 1.87 1.37 1.07 0.87 4.25 2.80 2.06 1.61 1.30 5.67 3.73 2.75 2.14 1.73 7.09 4.67 3.43 2.68 2.17 8.51 5.60 4.12 3.22 2.60 9.92 6.53 4.81 3.75 3.03
50 70
1
0.8
20 30 40 50 60
1.2 1.5
1
50 70 90
1.2 1.5
EMPGA
2
2.5
50 70 90 110
2
3
2.5
3.5
3
50 70 90
3.70 4 ＊ This electrode is designed for a 0.15mm discharge gap on each side. e P dimension is 0.3mm less than nominal diameter (No.).
3.5
4
e The electrode's tip may be bent if it is dropped or its tip directly touches other objects. If it is bent, make sure to perform dressing before using it.
Part Number – L – G EMPGA3 – 70 – G40
Order
EMPG
EMPGA
Delivery Quotation
Example
Part Number – L – G – (A) EMPGA3 – 70 – G40 – A1
Alterations
SR part
Gate
Alterations
Code
Spec.
Select the taper angle A° (available for EMPGA) 1° 3° Designation method 1° → A1, 3° → A3 x A3 is not available when L110 for No2.5 / 3 and L90 for No3.5 / 4 are chosen Q = 2tan (A/2)(L–30) + P
A
737
738
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