ELECTRO HYDRAULIC

Description

1. The machine body is in an overall welded and overall processed structure, and
   ANSYS finite element analysis software is applied to main parts of the machine
   body for analysis, which has ensured the reliability of machine tool and the
   precision of entire machine.

2. Closed loop control mode composed of electrohydraulic servo valve imported
from Germany and imported grating ruler is adopted for fhe main oil cylinders
on both sides, to break through the stroke control pattern of traditional bending
machines of mechanical stoppe-r type, typical of high feedback precision for
position of gliding block, accurate and stable operation, good synchronizing
performance and high repeated positioning precision of gliding block.

3. Imported parts are used for all the functional parts in the rear stopper to ensure
the stopping precision of rear stopper and the mechanism of rear stopper
will multiple stopping shafts for more complete functions is employed up to
customer requirements.

4. Integrated control system imported from Germany is adopted for the whole
hydraulic system, to simplify the installation of pipelines, and to ensures stable
operation as well as simple and nice appearance of the machine tool.

5. C-shaped plates are fitted on both sides of the machine body, and the high
precision grating ruler is mounted on the C-shaped plates, thus to avoid the
influence over pending precision arising from distortion of machine body during
bending process.

6. The lower workbench is fitted with automatic compensation mechanism for
hydraulic deflection, to achieve an effective dead zone free compensation with
high bending precision and long stability guaranteed.

7. The numeric control system refers to the numeric-control system special for
electrohydraulc servo bending machines of Italian ESA, Netherland DELEM, or
Swiss CYBELEC Companies, able to achieve the functions of graphic programming
for bending angle, compensation for angle amendment, automatic calculation
and adjustment of bending pressure, automatic calculation of compensation for
workbench distortion, extending length of workpieces, bending pressure for sole
pressing, open distance, and automatic withdrawal of rear stopper, etc.