High temperature sheet metal forming testing machine

Host function section

1. Dual hydraulic power structure, with two independent systems for edge pressing power and stretching power, which can independently control the direction, speed, and thrust of motion without affecting each other

2. Edge pressing mechanism: an independent pair of piston type hydraulic cylinders apply edge pressing thrust; Both edge pressing force and return force, as well as edge pressing speed and return speed, can be individually set and controlled

3. Closed loop control of edge pressure, with edge pressure curve output function, pre-set multi-point edge pressure values, the system needs to have a built-in curve fitting algorithm to output smooth edge pressure and control the edge pressure mechanism to follow the curve to output edge pressure

4. Configure a dynamic edge load balancing mechanism to ensure that the edge force is evenly distributed around the circumference

5. Optimize the motor speed of the edge pressing system, with a linear proportional relationship between speed and thrust, to achieve noise reduction and energy-saving emission reduction effects;

6. There are two working modes: stroke edge pressing and closed-loop edge pressing. Long press and hold the "stroke edge pressing" button to advance the edge pressing mold at a speed of 3mm/s, and release it to idle the 0.5mm/s "closed-loop edge pressing"

7. Stretching mechanism: Independent piston hydraulic cylinder applies stretching thrust; The thrust and return force of the stretching cylinder, as well as the stretching speed and return speed, can be set separately; Optimization of motor speed, with a linear proportional relationship between speed and thrust, to achieve noise reduction, energy conservation, and emission reduction effects

8. The output signal of the direct load sensor for tensile force does not require feedback from the oil chamber pressure sensor or conversion of piston area, and there is no theoretical error in the thrust resistance of the tensile cylinder

9. Automatic stretching shutdown mode: fixed load upper limit stretching shutdown, fixed stroke upper limit stretching shutdown, and stretching yield limit proportional shutdown

10. Software system: remotely connect through the network port to complete all device monitoring; All experimental parameters can be set; Collect the corresponding curve of stretching displacement stretching force edge pressure and generate an EXCEL data table

11. The zero point self calibration device for tensile displacement is used to ensure accurate collection of displacement values for low strength specification thin plates

12. Configure optical measurement synchronization trigger signal interface

13. Modular design of edge pressing mechanism, stretching mechanism, mold mechanism, power system, and measurement and control system, facilitating system maintenance and calibration

Experimental mold section

1. The mold assembly mechanism ensures that the concentricity deviation of the mold is less than 0.03mm, protecting the machine and the mold.

2. Install safety cushion rings to prevent rapid descent of the mold frame and prevent injury to the operator.

3. Specific mold configuration (to be selected by the customer).

Equipment security configuration

1. The testing machine is protected by an external protective cover and equipped with a protective door closing detection system. The machine cannot be activated and operated when the protective door is open

2. Both the test bench and the control end are equipped with emergency stop switches, which facilitate emergency braking and stopping.

3. The control software can be remotely connected to the platform through a network cable, and can be used in conjunction with cameras to remotely operate all experiments, parameter settings, and data collection for heating and water cooling system configuration.

4Five sets of water-cooled rings are used to cool the three machine crossbeams and upper and lower mold seats, respectively.

6Circulating water system with compression refrigeration, temperature adjustable. The circulating water cooler is equipped with three outlet pumps, which are used to control the temperature of the machine, the mold frame assembly, and the power of the high-frequency heater host.

7The concave mold is equipped with a heating tube and temperature sensor, which controls the temperature to "normal temperature -650 ℃", and the concave mold is in a red hot state. The top of the concave mold is equipped with an observation window and high transparency glass for online optical measurement.

8The edge pressing ring is equipped with a heating tube and temperature sensor, which controls the temperature to "normal temperature -650 ℃", and the concave mold is in a red hot state.

9The spherical die has a built-in heating tube and temperature sensor, which controls the temperature to "normal temperature -650 ℃", and the die is in a red hot state.

10The mold is equipped with a built-in heating method, ensuring uniform and stable temperature. Aluminum alloy can be directly heated to the desired temperature using the mold for testing; Hot formed steel can be preheated to above 900 ℃ in a high-temperature furnace and then transferred to a high-temperature mold for insulation and stretching forming.