Mainly used for conducting repeated bending tests on metal sheets to evaluate the performance of plastic deformation and defects displayed by the metal sheets during repeated bending.
Test Principle: A sample of specific specifications is clamped between two jaws of predetermined dimensions using a special fixture. By pressing a button, the sample is bent from 0 to 180°. After the sample fractures, the machine stops automatically and records the number of bends. Depending on customer requirements, special fixtures can be equipped to perform bending tests on metal sheets with different specifications.
Major Technical Parameters:
1. Sample Length: 150-250mm
2. Bending Angle: 0-180° (in-plane bending)
3. Counting Range: 99999
4. Display Mode: Computer, touch screen display and control, automatic recording of the number of bends
5. Bending Speed: ≤60rpm
6. Motor Power: 1.5kw AC servo motor and driver
7. Power Supply: Two-phase, 220V, 50Hz
8. Dimensions: 740*628*1120mm
9. Machine Weight: Approximately 200kg
Structure Features and Working Principle:
This testing machine consists of a main unit and an electrical measurement and control system. It utilizes mechanical transmission to apply a testing torque to repeatedly bend the sample, and employs photoelectric switches to detect the number of bending tests. After the sample fractures, the machine stops automatically, the swing arm resets, and the touch screen displays and records the number of bending tests.
1. Main Unit:
The main unit consists of an AC servo motor that drives a worm gear through a belt pulley, which then drives a crank-lever swing arm mechanism. The swing arm drives a cylindrical gear to rotate 180°, thereby making the sleeve on the swing arm bend the sample from 0 to 180° to achieve the purpose of the test. A counting device is installed on the cylindrical gear, and the photoelectric switch collects a signal each time the sample bends, achieving the counting effect. After the test is completed, if the swing arm does not stop in the middle position, pressing the reset button will trigger another photoelectric switch to collect a signal and restore the swing arm to the middle position. The swing arm is equipped with a lever, and different-sized sleeves with different inner diameters are installed on the lever. For samples of different thicknesses, the lever is adjusted to different heights and different sleeves are used. Below the swing arm, there is a sample clamping device. By manually rotating the screw, the movable jaw moves horizontally to clamp the sample. For samples of different diameters, corresponding jaws and sleeves are replaced (with markings on the jaws and sleeves).
2. Electrical Measurement and Control System:
The electrical measurement and control system consists of high-voltage and low-voltage parts. The high-voltage part controls the AC servo motor, while the low-voltage part is divided into three parts: one part collects the bending countsignal through the photoelectric switch, shapes the pulse, and sends it to the computer for display and storage; another part is responsible for controlling the reset of the swing arm by the photoelectric switch, stopping the AC servo motor when the signal is received; finally, when the signal indicating that the AC servo motor has stopped is received, the system applies reverse braking to the AC servo motor, causing the swing arm to stop at the appropriate position.
Working Conditions:
1. Operating temperature: 10-45℃
2. Level placement on a stable base.
3. Environment without vibration.
4. No corrosive substances in the vicinity.
5. No significant electromagnetic interference.
6. Power supply voltage fluctuation range not exceeding ±10V of the rated voltage of 22V.
A certain amount of space should be left around the tester.
Test Principle: A sample of specific specifications is clamped between two jaws of predetermined dimensions using a special fixture. By pressing a button, the sample is bent from 0 to 180°. After the sample fractures, the machine stops automatically and records the number of bends. Depending on customer requirements, special fixtures can be equipped to perform bending tests on metal sheets with different specifications.
Major Technical Parameters:
1. Sample Length: 150-250mm
2. Bending Angle: 0-180° (in-plane bending)
3. Counting Range: 99999
4. Display Mode: Computer, touch screen display and control, automatic recording of the number of bends
5. Bending Speed: ≤60rpm
6. Motor Power: 1.5kw AC servo motor and driver
7. Power Supply: Two-phase, 220V, 50Hz
8. Dimensions: 740*628*1120mm
9. Machine Weight: Approximately 200kg
Structure Features and Working Principle:
This testing machine consists of a main unit and an electrical measurement and control system. It utilizes mechanical transmission to apply a testing torque to repeatedly bend the sample, and employs photoelectric switches to detect the number of bending tests. After the sample fractures, the machine stops automatically, the swing arm resets, and the touch screen displays and records the number of bending tests.
1. Main Unit:
The main unit consists of an AC servo motor that drives a worm gear through a belt pulley, which then drives a crank-lever swing arm mechanism. The swing arm drives a cylindrical gear to rotate 180°, thereby making the sleeve on the swing arm bend the sample from 0 to 180° to achieve the purpose of the test. A counting device is installed on the cylindrical gear, and the photoelectric switch collects a signal each time the sample bends, achieving the counting effect. After the test is completed, if the swing arm does not stop in the middle position, pressing the reset button will trigger another photoelectric switch to collect a signal and restore the swing arm to the middle position. The swing arm is equipped with a lever, and different-sized sleeves with different inner diameters are installed on the lever. For samples of different thicknesses, the lever is adjusted to different heights and different sleeves are used. Below the swing arm, there is a sample clamping device. By manually rotating the screw, the movable jaw moves horizontally to clamp the sample. For samples of different diameters, corresponding jaws and sleeves are replaced (with markings on the jaws and sleeves).
2. Electrical Measurement and Control System:
The electrical measurement and control system consists of high-voltage and low-voltage parts. The high-voltage part controls the AC servo motor, while the low-voltage part is divided into three parts: one part collects the bending countsignal through the photoelectric switch, shapes the pulse, and sends it to the computer for display and storage; another part is responsible for controlling the reset of the swing arm by the photoelectric switch, stopping the AC servo motor when the signal is received; finally, when the signal indicating that the AC servo motor has stopped is received, the system applies reverse braking to the AC servo motor, causing the swing arm to stop at the appropriate position.
Working Conditions:
1. Operating temperature: 10-45℃
2. Level placement on a stable base.
3. Environment without vibration.
4. No corrosive substances in the vicinity.
5. No significant electromagnetic interference.
6. Power supply voltage fluctuation range not exceeding ±10V of the rated voltage of 22V.
A certain amount of space should be left around the tester.
