1. SANE KUEI MACHINERY CO., LTD
Electrical Discharge Machine
Manufacturer
YOUR EDM MACHINES MASTER ONLY
May 26, 2015
Brian Li / Sales rep.

2. THEMES ★ SKM Company in Brief ★ Overview to EDM
★ Introduction of SKM EDM Machines
★ Frequently Asked Questions

3. COMPANY PROFILE Year founded: November 9th 1990 Founders:
․President: Mr. David Chen
․General Manager: Mr. Peter Lin
Staff & employees: 30
Facilities: 150,000 m² (1,614,640ft²)
Business turnover:
What we do: EDM machines, ATC, C-axis
History & Development:

4. WHAT IS EDM MACHINE
A machine primarily used for unconventionally machining
1. hard metals, alloys, all materials conductive; or
2. heat-treated molds or dies; or
3. shapes of which impossible to do by conventional techniques like turning, milling, grinding, drilling…etc; or
4. precision requirements of which that ask the highest; or
5. surface roughness (Ra) of which to a certain deg., esp., the highest

5. MATERIALS OF ELECTRODE COMMONLY USED
․Silver tungsten
․Copper tungsten
․Copper Graphite
․Chromium Copper
․Electrolytic copper
․Graphite
․Bronze
․Aluminum alloy
․Steel

6. WORKING PRINCIPLE
To generate electric current through spark gap between tool electrode and work piece immersed in dielectric fluid to sparking (arcing), electric energy converts into thermal energy in high temperature that can melt the metal surface in an instant , then melt the work piece to a desired shape, surface roughness(Ra), & precision.
※In short:
Electricity > Heat > Melt > Form

7. APPLICABLE INDUSTRIES
Molds & dies:
․3Cs ( Computers, Communications,
Consumer electronics)
․Plastics & rubbers
․Automotive vehicles
․Powder metallurgy
․Super-hardened alloys
Any specific materials conductible:
․Prototyping

8. SKM CAPABILITY Standard production lines (OBM)
․ CNC series (Computer Numerical Control)
․ PNC series ( ZNC + Auto Positioning)
․ ZNC series (Die-sinking EDMs)
․ Small Hole Drilling EDM (D series)
․ SKM C-Axis
․ ATC (Automatic Tool Changer)
OEM
ODM

9. SKM EDM STRUCTURE

10. SKM POWER SYSTEM Modular design: Special circuit design:
․ Replaceable PCB
․ Examine easily
․ Maintain easily
Special circuit design:
․ Suitable to varied materials
․ Electrode wear rate less than 0.2%
․ Corner finishing (circle angle of sparking) lower than 0.02mm
․ M.F.D area reachable by:
∴Conventional: ∅20~30mm
∴Powder: ∅200mm

11. SKM DRIVE SYSTEM Z- axis (machine head): X-, Y- axis (slide):
․ Precision Ground Ball Screw
․ Swiss SCHNEEBERGER Guideway
X-, Y- axis (slide):
․ Precision Ball Screw
․ Precision Linear Guideway
․ Linear Roller Guideway
AC Servo motor
Optical Linear Scale:
․ Fargo 1 µm (X, Y, & Z axes)

12. SKM CONTROL SYSTEM Controller: Display: ․ Industrial-use CPU Processor
․ Industrial-use 64 bit Control Card
Display:
․ VGA, TFT

13. SKM FLUID RECOVERY SYSTEM
Work Tank
Flushing Nozzles
Dielectric Tank
Pumping Motor:
Filter tank & filters

14. SKM FIRE PROTECTION SYSTEM
Piezoelectric Lamp
Fire Guard Indicator
Infrared Detector
Oil Temperature Sensor
Fire Extinguisher

15. SKM MACHINE CASTINGS Casting Paints ․ Meehanite cast iron
․ Rustproof primer paint (marine grade)
․ Paste filler (vehicle grade)
․ Oil-resistant & erosion-proof paint (vehicle grade)

16. FEATURES FOR SKM CNC EDMs
․X, Y, & Z axis utilizes AC servo motor
․ Multi-cavity machining
․ Multi-side Orbit-cut machining for X,Y,Z axis
․ Helix machining
․ ATC (Automatic Tool Changer) available
․ C-axis available
․ Corner finishing (circle angle of sparking) lower than 0.02mm
․ Best Surface Roughness (Ra) better than 0.1µm
․High speed & long distance jumping
․Special Rib shape machining
․ M.F.D (Fine Mirror Finish)

17. LIST OF ALL MODELS (CNC) 1
Dual purposes on powder & fluid
․P60
․P90
Dielectric fluid (standard)
․S90
․S50
․S60

18. LIST OF ALL MODELS (CNC) 2
Single-head (ram-type)
․M430
․M750
․M2010
․M2210
․M3010
․M860
․M1470
․M1060
․M1510
․M1270
․M1675
․M1880

19. LIST OF ALL MODELS (CNC) 3
Double head EDM (ram type)
․M1510-2H
․M2010-2H
․M3010-2H
․M6215-2H
Gantry type
․M3018

20. FEATURES FOR SKM PNC EDMs
․X, Y, & Z axis utilizes AC servo motor
․ Auto-positioning
․ Multi-cavity machining
․ Program function
․ Corner finishing (circle angle of sparking) lower than 0.02mm
․ Best Surface Roughness (Ra) better than 0.1µm
․High speed & long distance jumping
․Special Rib shape machining

21. LIST OF ALL MODELS (PNC)
ZNC+Auto Positioning
․K50, K60
․K90

22. FEATURES FOR SKM ZNC EDMs
․Z axis utilizes AC servo motor
․ Program function
․ Corner finishing (circle angle of sparking) lower than 0.02mm
․ Best Surface Roughness (Ra) better than 0.1µm
․High speed & long distance jumping
․Special Rib shape machining

23. LIST OF ALL MODELS (ZNC)
Die-sinking EDM
․T50
․T30
․T60
․T90
․T120

24. FEATURES FOR SKM D series EDMs
Small Hole Drilling EDM
․ Manual type (D50, D60)
․ CNC type
․ Drilling capacity dia. Ф0.1mm ~ Ф6.0mm
․Verticality (Deviation) lower than 0.03mm
(EX.: Ф1.0mm pipe drilling 100mm deep)
․Inbuilt Water Filtration System (Pure water)
․Ion Exchange Resin Treatment Filter (one-to-many)
․Circuit design special to all kind of & super-hardened alloy materials.
․Discharge oil machining system optional for tungsten steel and special materials(D50 oil)

25. Small Hole Drilling EDM
LIST OF ALL MODELS ( D series)
Small Hole Drilling EDM
․D50 oil
․D50
․D60
․SD60 (CNC)

26. LIST OF ALL MODELS
SKM C-Axis
․Built-in
․External

27. ATC (Automatic tool changer)
LIST OF ALL MODELS
ATC (Automatic tool changer)
․ATC + 4 cutters
․ATC cutters
․ATC + 8 cutters
․ATC + C axis + CCD

28. ․Precision Electrode Clamps
LIST OF ALL MODELS
Standard Accessories (CNC series):
․Precision Electrode Clamps
․Piezoelectric Light
․Work Fastening Tool Kit
․Magnetic Induction Oil Nozzle
Base
․Operation Manual
․X Y Z axis Linear Scales (1µm)
․M.F.D. (Fine Mirror Finish) (C-06 PCB)

29. LIST OF ALL MODELS Additional Equipments (CNC series)
․ATC (Auto Tool Change)
․C-Axis
․”EROWA” Chuck-Swiss
․”3R” System Chuck-Swedish
․Di-electric Cooler
․Electric Oil
․Permanent Magnetic Chuck
․Automatic Fire Extinguisher
․Charge Coupled Device

30. OPERATION PROCEDURE 1. Turn on Power Switch
2. Pull up Emergency Stop button
3. Press Power On button
4. Align the horizontality & verticality of electrode by using dial gauge and by adjusting chuck

31. OPERATION PROCEDURE 5. Press F1 button to run “Manual” mode
6. Press YES button after showing “ Pls do home reference….” for running machine reference point or NO button to quit.

32. OPERATION PROCEDURE
7. Put work piece on permanent magnetic chuck of work table in position, where datum plane and X, Y directions being set and ready
8. Press F1 (Manual) -> F3 to do Edge Finding for Z-axis ( by zeroing or settings)
Choices:
Touch: Z-
Zero: Z-
Center: Z-
To zero: Z-

33. OPERATION PROCEDURE
9. To create new file with spark parameters or opt for specific edited program by pressing F3 (Edit) to run Edit mode

34. OPERATION PROCEDURE
10. Press F2 (Auto Run) to run program after exiting the Edit mode.

35. OPERATION PROCEDURE 11. Press button of Dielectric Fluid Pump Switch
12. Adjust Overflow Level Control Rod
13. Turn off the Piezoelectric light to energize the Fire Protection System

36. OPERATION PROCEDURE
14. Press NC start button to execute EDM program & machine
15. Take out the finished work piece after EDM operation being finished

37. FREQUENT ASKED Q Differentiation of ZNC, PNC, CNC
․ ZNC: Conventional type, hand-controlled, and Z axis is programmable.
․ PNC: Table movement in X-, Y- axis and auto-positioning by motor(s) and controlled NC, incapable of orbit cut functions
․ CNC: All 3 axes (X,Y&Z) controlled by CNC to run, simply compile the program and sparking conditions
․ Small Hole Drilling EDM: with a copper pipe to drill through hole , blind hole…

38. FREQUENT ASKED Q Machine specification: ․ X- & Y- axis travel
․ Z- axis travel
․ Max. table-quill (guide) distance
․ Table dimension
․ Max. electrode weight
․ Nominal current (power)
․ Max. stock removal rate
․ Best surface roughness (Ra)
․ Best electrode wear rate

39. FREQUENT ASKED Q Machine features (depending on model):
․ M.F.D (Fine Mirror Finish)
․ AC servo motors for X, Y, &Z axes
․ Multi-cavity machining
․ Orbit-cut machining
․ Helix machining
․ ATC (Automatic Tool Changer)
․ Best Surface Roughness (Ra)
․ Corner Finishing (Circle angle of sparking)
․ Rib shape machining
․ C-axis

40. FREQUENT ASKED Q Materials used in: ․ Tool Electrode
Any materials conductive, commonly used is :
1. Silver tungsten
6. Graphite
2. Copper tungsten
7. Bronze
3. Copper Graphite
8. Aluminum alloy
4. Chromium Copper
9. Steel
5. Electrolytic copper
․ Work piece
Any materials conductive

41. EXCELLENT EDM MACHINE ★ TO ASK: ★ TO BE PROVED: ․MACHINING SPEED
․PRECESION
․SURFACE ROUGHNESS (Ra)
․ELECTRODE WEAR RATE
★ TO BE PROVED:
․OVERALL PERFORMANCE
․SAMPLING OR PHYSICALLY APPLYING
․MEETING CUSTOMER’S REQUIREMENTS

42. CONCLUSION
․QUALITY
․SERVICE
․PRICE