The slider movement accuracy of the closed gantry double-point high-precision punch press is directly related to the quality and precision of the stamping products, and the in-depth study of its control technology is of great significance.
First of all, the precision design of the transmission system is the key link. The use of high-precision gear transmission or advanced ball screw transmission can effectively reduce the gap and error in the transmission process.
For example, in gear transmission, the accuracy and stability of power transmission can be ensured by adjusting the processing accuracy, tooth shape correction and reasonable meshing clearance of the gear. Ball screw transmission, with its low friction and high precision characteristics, enables the slider to be positioned more accurately when moving up and down. At the same time, the coupling and other components in the transmission system must also be strictly selected and installed and debugged to ensure that no additional deviation is introduced during high-speed operation, thereby providing a solid foundation for the slider movement accuracy.
Secondly, the optimization of the guide device cannot be ignored. The use of high-strength and high-precision guide rails, combined with high-quality slider structures, can effectively constrain the movement trajectory of the slider. The straightness, flatness and surface roughness of the guide rails must be strictly controlled within a very small range.
For example, steel-lined guide rails or linear guide rails are used, which have good wear resistance and guiding accuracy, can withstand large lateral forces, and ensure the smooth movement of the slider in the vertical direction. In addition, through the reasonable design of the lubrication system, the guide rail and the slider are always kept in a good lubrication state, further reducing friction resistance and wear, and maintaining the long-term stability of the slider's movement accuracy.
Furthermore, the accuracy and intelligence of the control system are the core elements. Using advanced CNC systems, the stroke, speed and acceleration of the slider can be accurately controlled. Through the analysis and programming of the stamping process, the best motion curve is preset, so that the slider can run at a suitable speed in different stamping stages, avoiding accuracy errors caused by sudden speed changes or overshoots. At the same time, high-precision sensors are used to monitor the position and movement state of the slider in real time, compare the feedback information with the preset value, and adjust the output of the drive motor in time to achieve closed-loop control.
For example, position sensors such as grating rulers can accurately measure the displacement of the slider and feed it back to the CNC system. The system fine-tunes the motor according to the deviation signal to ensure that the slider always runs accurately on the set trajectory.
Finally, the overall structural rigidity and thermal stability of the closed gantry double-point high-precision punch press also have an important influence on the movement accuracy of the slider. The body structure of the closed gantry double-point high-precision punch press should have sufficient rigidity to resist the huge impact force during the stamping process and prevent the body from deforming and affecting the movement of the slider. In addition, during long-term continuous operation, factors such as friction and motor heating will cause the temperature of the various components of the closed gantry double-point high-precision punch press to rise and cause thermal deformation. Therefore, it is necessary to adopt effective heat dissipation measures, such as cooling water channel design or temperature control devices, to reduce the interference of thermal deformation on the movement accuracy of the slider, and ensure that the closed gantry double-point high-precision punch press can maintain a high slider movement accuracy under different working conditions to meet the needs of high-precision stamping processing.
