A1: Permanent electro magnetic chuck is a new workholding applied in metal cutting process. Comparing to traditional clamping tools, it have the advantage of 5-sides workable at single clamp, less deformation, higher efficiency, clamping force exist even after power failure.
A2: Permanent electromagneitc chuck use the Neodymium magnet inside as the energy to hold metal workpieces. It’s free of power during working, except few seconds when MAG & DEMAG. While Electromagnetic chuck need continuous current to transfer into magnetic holding force. That means PEM chuck have better efficiency and accurancy and less deformation and consumptions.
|Features||PEM chuck||EM chuck||Traditional workholdings|
|Machining surface||5 side at one clamp||5 side at one clamp||1 side at one clamp|
|Power Supply at work||No||Yes||No|
|Workpiece deformation||Less deformation||Few deformation||Large deformation|
|Operation||Easy & Fast||Fast||Hard and Slow|
|Tools consumption||Less consumption||Medium consumption||High consumption|
|Controled by cnc program||Yes||No||No|
A3: The Permanent Electromagnetic chuck use high performance epoxy resin to fill in the gap of poles, and could protect the surface from coolant oil and water.