In Punching and Handling Phase


  • Always be watchful during the punching process. This is especially necessary for the new punching program to make sure everything is right. Although the CAD/CAM technology is very advanced, there are always possibilities of errors in the programming phase, from either software bugs or human error.
  • Always keep an eye on all the sheet corners. Most of the time, especially with hard material, the punching strokes on the perforating process will make the sheet distort and create a bowing effect. Because of this bowing effect, the corner of the sheet tends to curve up or down. If this happens there will always be a risk that the corner will be trapped on the turret magazine. The operator must bend the corner down or up if this happens to make the perforating process less risky.
  • Listen carefully during the perforating process. During the perforating process, the tool tends to wear out quickly because it punches many holes. It is recommended that you check the tool and die sharpness during the process to ensure good punching. This can be evaluated by listening to the sound of the tool and the quality of the hole. If the sound gets noisy, this could be because the tool and die are becoming dull and it is time to stop the machine and reshape the tool.
  • Investigate the slug. The other way to check the tool and die sharpness is to check the slugs. If the slugs are getting “ugly” that means that the punch and die needs to be ground again.
  • Make sure the sheet is still properly lubricated during the punching process.
  • Check the slugs container and clear any slugs from the turret table to avoid slug marks during the punching process. If the slugs keep pulling out on the table, clear it regularly to ensure there are no marks on the sheet. If the slug container is full, empty it before resuming the punching process.