Wire-Cut CNC Flat Linear Electric Discharge Machines

Hi-Thrust Flat (Planar) Linear Motors

Terminology (common use):
Electric Spark Discharge Wire-Cut Machine = Wire-Cut EDM = EDW

Excetek Wire-Cut EDMs with precision
HIWIN rigid flat linear motors

Excetek CNC W600I за нишкова ерозийна машина
Models:NP400LNP500LNP600L
XY travel400 × 300 mm500 × 300 mm600 × 400 mm
UV travel80 × 80 mm120 × 120 mm160 × 160 mm
Z travel 220 mm310 mm410 mm
Workpiecemax 500 kgmax 600 kg mx 800 kg

Please contact us for the
actual prices for the moment!

flat vs shaft linear motors

huge difference:

Some other machine-tools

∅28∼30 мм

Illustration from a manual of the shaft motor manufacture NPC 

Due to the longitudinal waves and the heterogeneity of the parameters of the individual magnets and their parts, the shaft deforms (plays)

EXCETEK – Flat Linear

Flat (Planar) Linear Motors or Shaft Motors: Your Choice?

Main disadvantages of the shaft motors:

  • thrust deficit (ЕМ coil are coreless!)
  • heat sink problems (or its absence!)
  • thrust is generated at a distance from the plane of movements – at any movement the motor pulls one side of the table down and the other – up
  • multidirectional runouts of the magnetic shaft and
    dynamic asymmetry of the gap (thrust vector
    “dances” chaotically from the direction of the feed!);
  • flimsy design (the shaft is attached only at the ends in
    tension and requires retensioning intermittently).

Main advantages of the flat Linear Motors:

  • reliability and longevity
  • thrust is generated in a plane
    close to the linear guides
    of the carriages
    ;
  • highest dynamic precision throughout the entire operation
    (the thrust vector coincides to the greatest extent with
    the feed direction);
  • high power and thrust due to core EM coils design;
  • perfect heat sink – the block of electromagnetic coils is
    attached with the entire plane to massive structural
    elements with high heat conductivity;
  • extra rigid structure;
  • unalterably constant unchanging gap

Wire-Cut EDM with Flat Linear Servo

rigid flat linear motors

  • Hi-thrust, high efficiency, low energy consumption 
  • Flat linear motors provide superb contour accuracy and super finish cutting  
  • NP wire-cut machine-tools are equipped with 0,01 µ (10 nano) scales

1,0 µ

0,01 µ
10 nano

Excetek Flat Linear EDW NP

The extra wide base of NP-series Wire-Cut EDMs prevents the work table from sagging at the extremes of travel ensuring horizontality precision.

NP-series Wire-Cut EDM – water cooling of the lower arm:
The water cooling (thermostating) of the lower arm (lower wire guide support arm) provided by the hydro unit prevents its thermal expansion in the process of electric spark cutting, increasing the final accuracy of the processed part.

LM roller guides guarantee the highest precision and stability.

The sturdy cast iron Meehanite base is designed using the Finite Element Analysis (FEM) method, which ensures rigidity and stability of the structure.

Excetek Wire-Cut EDM AWT photo

In 1990s Mr. Yoshikazu Matsuo invented and patented the world first automatic wire-threading device with wire annealing (Japanese Patent # 特許第2686796号). In later years his ingenious invention has been deeply modified and greatly improved. 
NP-series Wire-Cut EDM AWT is the latest modification of the reliable wire threading mechanism created by Mr. Y.Matsuo.

Linear Wire-Cut EDMs
+ Fast (10 seconds!) & Reliable
Automatic Wire Threading (AWT)

Wire-Cut EDM AWT by Mr. Y. Matsuo patent number

New W600i Controller
Soft Version W20A

  • CPU = Intel j1900
  • Reliable industrial version of Windows
  • CPU efficiency increases up to 600%
  • Large 19″ sense-touch screen
  • Graphics speed up to 600%. For a program of 30,000 blocks, the compilation speed is greatly different from the old version: 17 sec compared to 123 sec
  • New generation PCB
Excetek NP-series wire-cut EDM CNC W600i display

Hi-Precision:

SKD-11;
t = 20 mm; 
1 rough cut + 2 finishing;

contour accuracy 0 ∼ -2µ

DPM - Digital Power Management

The digital signals of the spark discharge density and state are fed to the CNC controller to facilitate calculation of the discharge area according to the discharge capacity,

Thus DPM enhances the precision of the discharge energy management and controls wire tension and water flow. The system improves the speed and accuracy especially in step shape parts machining.

Effects of DPM (step shape part cutting)Modeс DPMбез DPM
Time39 min58 min
Accuracy±3 µm± 15 µm

Stable Discharge Module

Continuous cutting of 50 holes with shape accuracy control of up to 4 μm (inner)

Results of an official SGS (Société Générale de Surveillance) test
achieved accuracy images

PRECISION: Pitch Error

 X  pitch error

Workpiece: SKD-11

Thickness: 30 mm

Number of cuts: 4  

  Y  pitch error

PRECISION: Roundness

Workpiece:
tungsten carbide

Thickness: 50 mm

Wire electrode: 
0,2 mm

Number of cuts:
1 rough + 2 finishing  

Roundness = 2.6 µm

Excetek Wire-Cut EDM AWT photo

In 1990s Mr. Yoshikazu Matsuo invented and patented the world first automatic wire-threading device with wire annealing (Japanese Patent # 特許第2686796号). In later years his ingenious invention has been deeply modified and greatly improved. 
NP-series Wire-Cut EDM AWT is the latest modification of the reliable wire threading mechanism created by Mr. Y.Matsuo.

Linear Wire-Cut EDMs
+ Fast & Reliable
Automatic Wire Threading (AWT)

Wire-Cut EDM AWT by Mr. Y. Matsuo patent number

Standard Accessories:

  • XY linear scales 10 nm (0.01 µm)
  • AWT (Automatic Wire Threading)
  • Brass wire electrode (× 1 reel / 3 kg)
  • Clamping tool (× 1 set)
  • Ion exchange resin (× 10 liters)
  • Vertical alignment jig (× 1 set)
  • Paper filters (× 2 pcs)
  • Diamond guides (× 2 pcs)
  • Upper & lower flushing nozzles (× 2 sets)

Options:

  • Clamping beam
  • Super Finish Circuit (< Ra=0.2 µm)
  • Rotary indexing table of W-axis
  • AVR 15кVA
  • Jumbo Feeder L-50A
  • SMS option
  • Signal Tower
  • Remote Monitor System
  • Auto Measuring System 

Specifications

NP400L

NP500L

NP600L

Max workpiece 750 × 550 × 215 mm850 × 550 × 300 mm1000 × 700 × 345 mm  
Max workpiece weight500 kg600 kg 800 kg
XY stroke400 × 300 mm500 × 300 mm600 × 400 mm
UV stroke80 × 80 mm120 × 120 mm160 × 160 mm 
Z stroke220 mm310 mm 410 mm
Wire diameter∅ 0,15 ∼ 0,30 mm

Simultaneous axes control

XY – flat linear drives
+ UVZ AC servo 
Max taper angle ±22°/80 mm (wide diamond guides + nozzles)±26°/80 мм (wide diamond guides + nozzles) ±30°/80 мм (wide diamond guides + nozzles)
Machine dimensions2260 × 2625 × 2100 mm2500 × 2650 × 2160 mm  2670 × 2965 × 2300 mm 
Machine weight3050 kg3350 kg 4700 kg
Water tank volume650 liters750 liters900 liters
Paper filter2
Deionizerautomatic
Water coolerautomatic

Machine-Tool Dimensions