Benefit A. Saving production time (Max
cutting speed: ***0mm2/min)
Benefit B. Saving tool cost (the electrode is
cheaper: around 1.2USD/pcs)
Benefit C. Saving material cost (the cutting gap
is smaller: 1.**2mm)
I.The machine
characteristics:
(1)The machine
utilizing anodic machining principle, cutting special steel that
cant be easily cut, such as high-temperature heat-resistant alloys,
high chromium, high nickel alloy, titanium alloy. It can also cut
steel rail.
(2)The
cutting efficiency is high, the maximum cutting speed is
***0mm2/min
(3)Use
steel as the electrode, the cost is rather
lower
(4)Cutting
gap, ≤2mm, save precious steel
II. Specification
Model
No.
EDS**0
EDS**0
EDS***0
Max. cutting
diameter
φ**0mm
φ**0
mm
φ***0
mm
Max. workpiece
width
**0mm
***0mm
***0mm
Max. cutting
travel
**0mm
**0mm
***0mm
Max. cutting
length
Unlimited
Unlimited
**0mm
Worktable
dimensions
**0x***0mm
***0x**0mm
***0x***0mm
Worktable moving
travel
**0mm
**0mm
**0mm
Max cutting
speed
***0mm2/min
***0mm2/min
***0mm2/min
Max. worktable
load
***0kg
***0kg
****0kg
Electrode
size
0.7～1.2(thickness)x****0(W)x***0(L)
0.7~1.2(thickness)x****0(W)x***0（L）
0.7~1.2(thickness)x****0(W)x***0（L）
Cutting
gap
≤2mm
≤2mm
≤2mm
Electrode
Material
Steel
steel
steel
Max. output
current
**0A
**0A
***0A
Controller
German
Siemens
German
Siemens
German
Siemens
Feeding
motor
Japan
Panasonic AC servo motor
Japan
Panasonic AC servo motor
Japan
Panasonic AC servo motor
III.
Introdution of Electrical Discharge Sawing
machine.
1、Working
theory
The
machine utilizing anodic machining principle, cutting special steel
that cant be easily cut, such as high-temperature heat-resistant
alloys, high chromium, high nickel alloy, titanium alloy. And the
electrode is the mild steel, which is running fast on the
pulleys.
The work
piece is positioned on the worktable. And the mild steel electrode
connects with the plus end of the power supply. And the work piece
to the minus end of the electrical power supply. There is a
flushing device which can supply sodium silicate solution (the
coolant) to the cutting area. The electrical discharging happens
continually between the mild steel and the work piece according to
the drawing
2、Simple
description
The
machine is equipped with the main machine body, working liquid
system and controller.
1) The
main machine body
The
machine is gantry structure which is made up with the worktable
parts, moving crossbeam and upright column the motorized electrode,
etc.
⑴ Worktable
The
worktable is used for holding and adjusting the work piece. The
worktable moves from point to point or continually, derived by the
motor and couple and ball screw on the V guide way of the machine
body.
⑵ Device of
running the belt type steel electrode.
This
device has functions of running& guiding and controlling the
tension of the belt type electrode steel and also the function of
higher power supply feeding, and checking and protection of
belt-breaking.
The belt
type steel electrode is running on the driving pulley and slave
drive ones which are installed on the both holders of two ends of
the crossbeam.
The
driving pulley is moved by the 3 phases motor and the slave drive
pulley by hydraulic pressure. The belt type steel electrode is
guided with two guiders in order to make sure the electrode is
under good tension condition. And the belt type steel electrode
tension can be adjusted by the hydraulic pressure. In case the belt
type electrode breaks or the tension is weak, the alarm will appear
at once and the machine will stop working too. The power supply
feeds through the pulley, installed with the power feed brush,
pulley axle and to the belt type steel electrode.
The steel
belt electrode is held by four sets of guiders in order to make the
electrode running in the same surface of the work piece cross
section and make the cutting gap as small as possible. There
are flushing mouths on the guiders, which offer the working liquid
to the cutting area.
⑶ Upright column
and device of the motorized belt type steel
electrode.
The
device of the motorized belt type steel electrode is moved by the
A/C servo motor which drives the gear reducing mechanism with ball
screw. So the belt type steel electrode can move to/away the work
piece.
The
upright columns are installed the linear guide ways, which hold the
device of the motorized belt type steel electrode. In order to make
the device move flexibly and reduce the loading of the servo motor,
there are the weight balance parts connected with the device of the
steel electrode by a roller chain inside of the upright
columns.
The
limited switches are installed on the device of the motorized
electrode. And there is a traveling ruler near to the device for
the operator to check the travel during
working.
2、The system of working
liquid
The
working liquid is taken to the flushing mouths by pump. And then it
flushes to the work piece by the adjustable mouths and return to
the collecting tank. The liquid after filter can be used
repeatedly.
The
supplier will supply the way how to mix the working liquid and the
installation floor plan. And the end user designs and builds the
liquid tank and the collecting liquid path according to the floor
plan and also the workshop area.
3、Electrical power
supply and control
⑴machining electrical
power supply
The
machine applies the special linear transform to exchange the 3
phases A/C electrical power into the lower voltage and high current
working power supply.
Main
specification of the power supply:
Input：3
Phases **0V *0Hz
Output：*2V～*0V divided into adjustable 4
levels.
Max
machining current：**0A/**0A/***0A subject to different
models.
⑵Controller
system
The
machine applies the programmable PLC to control the running of all
kinds of functions stable.
The
power units are 3 phases asynchronous motors expect the Panasonic
A/C motor that drives the device of the belt type steel electrode.
All motors return circuits are installed with the protecting
switches to avoid the overloading.
The system
of the auto feeding steel electrode can inspect the discharging gap
in real time, and it will adjust the feeding speed automatically
according to the working situation in order to make the cutting
under the stable and efficient condition.
