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Coil Forming Machine
Coil Forming Machine Coil Forming Machine Coil Forming Machine Coil Forming Machine Coil Forming Machine

Coil Forming Machine

Automatic coil former for manufacturing coils of power and traction motors

This coil forming machine is designed to produce motor coils by opening the loop and forming it into diamond-shaped coil. The parameters of coil forming machine can be programmed by microcomputer during the coil forming process. After manually loading the coil and press the start button, the coil processing machine can automatically control and realize the precise forming of coil evolutes. After a coil is formed, the clamp will be released automatically to enable the manual removal of finished coil, and then the equipment will be reset automatically. The diamond-shaped coils produced by this coil making machine do not have any mechanical damage, and the insulation between the turns of the coil is intact, which ensures the reliable electrical performance of the coil.

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Key Advantages

Coil forming machine runs based on the principle of synchronized and consistent movement, to ensure that the spanning distance between the two ends is consistent, and it can be accurately inserted into the motor slot.

Specifications
Overall loop length 700-3500mm
Slot length 600-3450mm
Slot part radius 15-20mm
Coil stack width 4-30mm
Coil stack height 12-70mm
Coil straight side length 230-2500mm
Coil length 520-3200mm
Coil width 150-1050mm
Lift 0-400mm
Evolute angle 0-30°
Angle accuracy ±0.1°
Coil Forming Machine
Features
    1. Top arc forming function for accurate coil positioning
    2. Uniform coil shape with precise control over angles and size
  • Coil forming machine is suitable for all types of stator coils. The main drive adopts servo and the clamp adopts hydraulic cylinder and regulating valve to ensure accurate positioning of each workstation. The four-arm stretching is driven by using servo motor and ball screw, thus resulting in an accurate positioning and high precision.
  • The operations of coil opening and coil evolutes forming can be adjusted seperately, with a high degree of automation and simple operation.
  • Coil former can work continuously to get higher production efficiency.
  • A CNC servo is adopted to control the angle of coil opening, therefore providing a finished coil with higher precision.
  • All data can be input directly through the touch screen, which is more convenient and quicker.
  • The coil can be automatically set and centered to ensure that the coil meets the design requirements.
  • Coil forming machine runs based on the principle of synchronized and consistent movement, to ensure that the spanning distance between the two ends is consistent, and it can be accurately inserted into the motor slot.
  • The top arc system adopts the rotating mode to ensure the forming requirements of different arcs and specifications of the coil ends.
  • All processes are automated except loading and unloading.

The process begins with preparing raw materials such as copper conductors and insulation films. The wire is then wound into the desired coil shape, followed by insulation taping. After that, coils are hot-pressed to stabilize the shape and ensure structural integrity. Final steps include quality inspection and process adjustments tailored to specific performance or application requirements.

One widely used method is the multi-resin mica tape wrapping technique. It involves annealing the copper wire, applying turn insulation, and wrapping the main insulation using a half-lapped approach. After wrapping, coils are heat-cured at around 160°C for 4 hours. A corona-resistant layer is then applied to control partial discharge and enhance insulation performance in high-voltage environments.

The process includes two main stages:

  • Component assembly: This includes installing the stator and rotor units.
  • Final assembly and testing: Bearings are mounted, the air gap is calibrated, and a series of functional tests are conducted to verify alignment, insulation strength, and mechanical stability.
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Coil Manufacturing Equipment

As a professional supplier of coil manufacturing equipment, Xianglong has committed itself to research and development for many years, each of our equipment is highly customizable.

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Company Profile

Xianglong is a company engaged in R&D, manufacture and supply of coil manufacturing equipment including loop winding machine, coil forming machine, coil taping machine, coil press, vacuum pressure impregnation system, vacuum drying equipment, motor coil dismantling machine and balancing machine. These motor coil machines have found extensive applications in the production processes for high voltage motors, wind generator motors, steam turbine generators, electrical appliance motors, permanent magnet motors, transformers, new energy motors and other products.

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