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3D Stretch Bending Machine

3D Stretch Bending Machine

Position control Repeatability accuracy:<=±0.01mm;
can bend material tensile force requested range for 0.001 to 5.5 tons
Tension force control 2 to 5.5 Tons.
Die platform 1963*1300 mm(customized by request)

Description

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Max tension force 5.5 Tons

Position control Repeatability accuracy:<=±0.01mm;

can bend material tensile force requested range for 0.001 to 5.5 tons

Tension force control 2 to 5.5 Tons.

Die platform 1963*1300 mm(customized by request)

Automatic lubricating standard equiped

Swing arms warpped rigidity deformation,4mm (measured under 5 tons tensile force, the farthest position)

Jaw decline Within 5 years,2mm(decline tolerance while tension cylinders fully extended); Flatness adjustable.

Jaw height Min center height 980mm, 0-500mm adjustable.

Jaw style circle or rectangle as request.

Jaw rotation servo control,0-360°

Jaw distance Min 270mm , Max 3500mm

Jaw grip grip speed, force adjustable, no break material


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Stretch bending process:

The basic principle of the stretch forming is to apply the tangential tension while the profile is bent to overcome wrinkle instability on the inside and improve the stress distribution of cross section, reduces the springback and improves the shape accuracy. During the deformation process of the profile material, execute the radial tensile stress , ( execute stretch bending ) can reduce the stress difference between the inner and outer layers, therefore reducing the springback, improve the forming precision of parts.

According to different control methods, the bending can be divided into tension-controlled stretch forming and position-controlled mode.

When loading under the position mode, stretch forming directly control of the elongation of the profile by precisely controlling the movement trace of the jaw gripper, compared to the loading method under force control, by this way there is more superiority, high forming precision and higher consistency.


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Application: 

Roof rail, curtain wall, facade profiles, hollow profile, 3D profile, aerospace,escalator,bumper, rail transportation.

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