DescriptionThe DN 33 Draw Strip/Draw Bead Tester comprises a long stroke electro mechanical bal
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The STD-DN 33 Draw Strip/Draw Bead Tester comprises a long stroke electro mechanical ball screw actuator mounted horizontally on a steel bed plate in line with a tooling fixture. The actuator has an integral LVDT for displacement measurement and is controlled by means of a standard a.c. vector drive with encoder feedback.
The tooling fixture comprises two articulated arms, each carrying one half of a draw tool. The arms are connected to a fixed point on the machine bed-plate by means of a force transducer, in such a way as to measure the combined drawing force on the arms. The clamping force on the draw tool is by means of a hydraulic cylinder with force transducer feedback and controlled by means of a proportional control valve.
The standard specimen is a long strip of material of up to 25 mm width, which is connected to the actuator by means of standard mechanical grips.
| Drawing Speed: | 200 to 2.000mm/min |
| Speed Resolution: | +/- 1% of maximum speed |
| Maximum Clamping Force: | 1 kN to 68 kN |
| Clamping Force Load Cell: | 100 kN |
| Maximum Pulling Force: | 54.8 kN (18.4 kN for a lifetime of 2500 km) |
| Drawing Force Load Cell: | 100 kN |
| Maximum Drawing Length: | 400 mm |
| Maximum Strip Size: | 525 mm x 70 mm |
| Tool Size: | 35 mm x 45 mm (typical) |
| Tool Finish: | 0.05 – 0.02 microns Ra |
| Contact Conditions: | Flat on Flat |
| Cylinder on Flat (sliding) | |
| Cylinder on Flat (rolling) | |
| Draw Bead | |
| Fixed Bead/Roller Bead | |
| VDA Standard Flat on Flat: | Length 145 mm x Width 70 mm |
| Additional Features: | Strip Heating – Ceramic |
| Tool Heating – Cartridge | |
| Thermocouples x 2 | |
| Pyrometers x 2 | |
| Actuator: | Electro-thrust Ballscrew with a.c. Servo Motor |
| Clamping Force: | Hydraulic Ram |
| Power Pack: | 2 l/min at 210 bar |
| Interface: | USB Serial Link Interface Module |
| Software: | COMPEND 2000 |
| Automatically Controlled Parameters | Drawing Speed |
| Specimen Load | |
| Measured Parameters | Drawing Speed |
| Specimen Load | |
| Drawing Friction Force | |
| Drawing Displacement | |
| Services | |
| Electricity: | 220/240V, single phase, 50 Hz, 7.5 kW |
| 110/120 V, single phase, 60 Hz, 7.5 kW | |
| Installation | |
| Floor-standing: | 900 mm wide x 600 mm deep x 1.200 mm high, 250 kg |
| Control cabinet: | 530 mm x 800 mm x 300 mm high, 20 kg |
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