Technology

he installation technology comprises the assembly of rotor and stator as individual semi-finished products and their final assembly in the motor. For this process, manual devices or completely automated lines with a capacity of 2,800 motors per shift are used according to the quality requirements and productivity. 

The following technologies are used for the assembly: 

• Stamping by controlling the force and path: shaft, commutator, balancing rings, bearings, terminals, flanges, casings, etc.  
• Inserting the groove insulation and installation of front insulation if the stack is not pre-insulated with injection moulding 
• Installation (stamping, affixing, potting) of magnets for EC application 
• Winding: 
  • Flyer technology  
  • Needle winding 
  • Pole-chain winding 
  • Prototype winding of samples 
  • Wire manipulation to contact position    
• Contacting: 
  • Terminal impressing/piercing the wire 
  • Crimping of terminals to wire 
  • Resistance welding of terminal and wire 
  • Laser welding of terminal and wire (in development) 
• Balancing: 
  • Milling of balancing rings or blades 
  • Cutting of sheet metal 
  • Adding balancing putty 
  • Drilling holes in balancing ring
• Impregnation: 
  • Varnish trickling 
  • Potting in vacuum 
• Bonding: 
  • Surface conditioning with laser, plasma, washing and sanding 
  • Orbital and standard riveting 
  • Laser welding of plastic materials 
  • Gluing with various materials 
  • Ultrasonic bonding 
  • Tight fit (also heating or cooling of components) 
  • Screwing with torque and turn control 
• Controls: 
  • Optical control, machine vision, 3D scanning 
  • Thermal vision control of contact 
  • Acoustic measurements 
  • Electrical measurements 
  • Vibration measurements 
  • Tightness measurements 
• Traceability:  
  • Labelling or laser engraving 
  • Material traceability per piece 
  • Traceability of process parameters per piece 
  • Traceability of all controls per piece