1. CONTENTS 1
The advantages of Servo Punch 2
Introduction of servo drive solution 3
Working Mode of servo punch 4
Testing data 5
ESTUN’s Total Solution

2. Typical case: AMADA, MURATEC
1. The advantages of Servo PUNCH
In the first decade of 21th century, Servo Direct Drive became a new trend.
Typical case: AMADA, MURATEC
Servo + Reducer+ Crank
Amada AE Series
Servo + Crank
Amada EM Series
Servo + Reducer
+ Crank toggle
MURATEC MOTORUM

3. 1. The advantages of Servo Punch
Servo Punch does not only keeps the advantages of traditional mechanical punch structure, but also has more
Extreme Energy Saving
Normally 60% energy saving。
Extreme Noise Reduction
10 dB noise reducing, up to 11%.
Extreme Mould lifetime Extension
Lower Inertia, less Impact

4. 1. The advantages of Servo PUNCH
Extreme Efficiency Increasing
Stroke and speed directly controlled, synchronized with feeding
1.4mm stroke，0.5mm gap，1800 strokes/min
Extreme High Accuracy, Manufacturability
High slider poisoning accuracy
Multiple punch mode: press, punching, forming
Maintenance Free
No hydraulic system
Only lubrication

5. Fake Direct Drive 2. Introduction of servo drive solution Solution
Advantages
Disadvantages
Servo
Reducer
Crank
Low motor torque; smaller;
Low punch rate
Reducer’s gap, noise, lifetime ——not direct drive
Need maintenance
Servo (single/double)
Simplest ;
Highest punch rate;
High accuracy;
No gap, high Manufacturability
Higher torque requires higher reliability
Crank toggle
Motor torque is less than the one of servo & crank plan
Punch rate is lower too
Complex structure, algorithm
Low manufacturability
Low punch head stroke
Fake Direct Drive

6. Single Servo Motor + Crank
2. Introduction of servo drive solution
ESTUN’s Turret Punch solution:
Single Servo Motor + Crank

7. 2. Introduction of servo drive solution
Servo Motor Features
Low speed & high Torque，more than 3 times overload
IP65
Water cooling
Rated speed: 500 rpm
Highest Speed: 600~650 rpm
Resolver，high endurance
Built-in thermo protection

8. 2. Introduction of servo drive solution Servo Drive Features
Specifically designed for punch and turret punch machine;
Built –in punch program ， perfectly compatible with Fanuc & Siemens control unite;
more than 3 times overload;
Current & acceleration feed forward control;
High response，1.6kHz Frequency Response;
Suppression of low frequency structural vibrations,
Automatic gain setting, online load inertia monitoring, sample parameter setting;
Motor parameter automatic recognition, online update, motor overheat protection
CANopen, MODBUS, PROFIBUS, EtherCAT, POWERLINK

9. refrigerating capacity
2. Introduction of servo drive solution
Model
Servo Motor
Servo Drive
refrigerating capacity
20 Tons
EMT2-200GW
EHD-5ZDEB
3.5~5 kW
30 Tons
EMT2-200HW
EHD-5ZDMB
6~9 kW
Control Unite
FANUC 0iPD
RS-232
Siemens 840D,802D,802DSL
PROFIBUS

10. 2. Introduction of servo drive solution
Servo Motor Technical Specification for 20 Tons Punch
型号Model
EMT2-200GW
额定功率 rated output power 41 kW
额定扭矩 rated torque
800
N∙m
最大转矩 peak torque
2400
额定转速 rated speed
500
rpm
最高转速 max.speed
600
额定电流 rated current 87
Arms
瞬时最大电流 instantaneous peak current
261
转子惯量(不带抱闸)
inertia of rotary moment
0.34
kg∙m2

11. 2. Introduction of servo drive solution
Servo Motor Technical Specification for 30 Tons Punch
型号 Model
EMT2-200HW
额定功率 rated output power 63 kW
额定扭矩 rated torque
1200
N∙m
最大转矩 peak torque
3500
额定转速 rated speed
500
rpm
最高转速 max. speed
600
额定电流 rated current
130
Arms
瞬时最大电流 instantaneous peak current
420
转子惯量(不带抱闸)
Inertia of rotary movement
0.53
kg∙m2

12. 2. Introduction of servo drive solution
Someone may ask
How can direct drive servo motor save energy when rated power is so high？
Servo motor only consumes energy when it runs;
Motor efficiency＞95%;
Direct drive and high torque requires high rated power;
Testing data：26 kW/h at 20 Tons punch machine, and worst working condition.

13. Typical Working Mode of Servo Punch：
High speed punch
Stepping punch
Forming punch
Mute punch
Mold calibration

14. Introduction Ram stroke 3. Working Mode of servo punch
Mechanical top dead center
Mould changing position
Top dead center (punching starting)
Ram stroke
Bottom dead center
Mechanical bottom dead center

15. Working Mode of Punch Head
3. Working Mode of servo punch
Working Mode of Punch Head
simple pendulum:
After received signal, motor runs from point A to point B, then return from point B to point A.
A: Top dead center (punching starting)
B: Bottom dead center
Forming:
After received signal, motor runs from point A to point B, then return from point B to point A after a while of stopping.
Rolling:
After received signal, motor runs from point A to point B, motor will keep in bottom dead center, then return from point B to point A after receiving press finishing signal.

16. 3. Working Mode of servo punch
Stamping Mode:
Stamping mode can be set two working mode by adjusting Pn212:
Mode 0: bottom dead center adjustable: After received starting signal, motor runs from point A to point B, then return from point B to point A. Motor will keep running like this, until it stops at point A, after receiving punching cancelling signal;
Mode 1：Mechanical bottom dead center will be fixed to bottom dead. As following image, ： After received starting signal, motor runs from point A to symmetrical position point C through point B. Motor will keep running like this. After receiving punching cancelling signal, motor will finish current circle, then return to point A and stop.
C: Top dead center
A: Top dead center
B: Bottom dead center

17. 3. Working Mode of servo punch
Double Pendulum:
After receiving starting signal, motor runs from point A to point B, then runs from point B to point C; After receiving next starting signal, motor runs from point C to point B, then runs from point B to point A. Point C must be  360 degree symmetrical with point A, B is mechanical bottom dead center and corresponding to 180 degree. Point C and point A correspond same slider position because of symmetry. Slider moves like simple pendulum mode. In this mode, modulus is deep and not adjustable, but punching speed is fast.
A: Top dead center
C: Top dead center
B: Bottom dead center

18. Temperature rise test: 30T
4. Testing Data
Temperature rise test: 30T
No.
Top dead center
Bottom dead center
Opening angle
Swing times
Total testing time 1
145.9
180
34.1*2
1520 s/min
60 min
Equal to r=16mm, l = 160mm, Stroke 3mm
Temperature setting of water cooling machine is 20° C， refrigerating capacity 5kw，flow 16.6L/min
The temperature of motor stator winding stabilized in 70°C

19. Equal to r = 16mm, l = 160mm, Stroke 8mm
4. Testing Data
Endurance test ，20T
No.
Top dead center
Bottom dead center
Opening angle
Swing times
Total testing time 1
120
180
60*2
400 s/min
3 months
Equal to r = 16mm, l = 160mm, Stroke 8mm
Temperature setting of water cooling machine is 20° C， refrigerating capacity 5kw，flow 13L/min
The temperature of motor stator winding stabilized in 80°C

20. 4. Testing Data Moment of Inertia Motor Rotor inertia EMT2-200GW 0.34
Kg∙m2
EMT2-200HW
0.53
Ram
（r=16mm；l=160mm）
Rotor inertia
20T
0.113
Kg∙m2
30T
0.168

21. Double Pendulum （ no- load ）
4. Testing Data
Double Pendulum （ no- load ）
Punch head frequency testing 20T
No.
Top dead center
Bottom dead center
Opening angle
Time
(ms)
Stroke
(mm)
Frequency
(Strokes/min) 1
152.4
180
27.6*2
31.1
2mm
1929 2
145.9
34.1*2
34.6
3mm
1734 3
140.4
39.6*2
38.2
4mm
1570 4
130.9
49.1*2
42.3
6mm
1418 5
122.4
57.6*2
46.4 (47.8)
8mm
1255 6
118.5
61.5*2
48.0 (50.0)
9mm
1200

22. Double Pendulum （ no- load ）
4. Testing Data
Double Pendulum （ no- load ）
Punch head frequency testing 30T
No.
Top dead center
Bottom dead center
Opening angle
Time
(ms)
Stroke
(mm)
Frequency
(Strokes/min) 1
152.4
180
27.6*2
32.3ms
2mm
1857 2
145.9
34.1*2
35.4ms
3mm
1695 3
140.4
39.6*2
39.0ms
4mm
1538 4
130.9
49.1*2
42.8ms
6mm
1400 5
122.4
57.6*2
47.0ms
8mm
1276 6
118.5
61.5*2
49.8ms
9mm
1204

23. noise reduction test of mute punch
4. Testing Data
noise reduction test of mute punch
Testing data at client’s side
Max speed of motor: 600RPM;
Please: production workshop.
Thickness：1mm Pre pressure point ：130.9 degree
Mould: 20× Punch speed: 50RPM
Speed conversion point: 135 degree
Normal punch noise: 93.4 dB
Mute punch noise: 84.4 dB. Reduce 9.6% noise.

24. All Servo Turret Punch Total Solution
5. ESTUN’s Total Solution
ESTUN
All Servo Turret Punch Total Solution
ProNet & EMS Servo System
EHD & EMT2 Direct Dive Servo System
Fagor 8055I Controller
Servo Punch Head

25. 5. ESTUN’s Total Solution
Electric cabinet

26. 5. ESTUN’s Total Solution
Electric cabinet

27. 5. ESTUN’s Total Solution
Punch frequency:
2 mm stroke 1900 times/min
3mm stroke 1700 times/min
4mm stroke 1500 times/min
Punch stroke：32mm
Nominal pressure ：200KN\300KN
Weight：270 kg (motor is not included)

28. FAGOR Efficiency Customization optimization Easy to re-development
5. ESTUN’s Total Solution
FAGOR
8055i 数控系统
FAGOR 8055i CNC System
Efficiency
Customization
optimization
Easy to re-development

29. Thank you!
Please contact us !