Epoxy Resin Sleeve Processing: How To Set The Ideal Feed Rate Parameters?

In the precision machining of electrical insulation components, the cutting performance of epoxy bushing manufacturer bushings often depends on the coordination of feed rate and spindle speed. Mastering these technical details can significantly improve the smoothness of the finished surface and reduce the additional costs caused by tool wear.

The Core Logic of Epoxy Resin Bushing Cutting Parameters

This type of composite material has high hardness and brittleness, requiring a balance between heat accumulation and the risk of chipping when setting feed rates. Typically, a travel range of 1500 to 3000 mm per minute is common. This setting allows the tool to advance stably within the resin matrix, preventing localized overheating that could soften the material.

Differences in Numerical Values ​​Between Roughing and Finishing

• Roughing Stage: A single-tooth feed rate of approximately 0.35 mm/rev can quickly remove excess material.

• Finishing Stage: It is recommended to reduce the value to 0.05 to 0.15 mm/rev.

• Depth Control: Maintain the depth of cut between 0.5 and 2.0 mm per pass.

The Impact of Feed Rate Parameters on Epoxy Resin Sleeve Quality

Excessive feed rate generates significant cutting forces, directly causing micro-cracks or delamination at the sleeve edges. This physical damage reduces the creepage distance of the insulation, creating potential electrical safety hazards. Maintaining a constant feed rate helps create continuous chips, preserving the integrity of the material structure.

Application of Climb Milling

In practice, climb milling is the preferred method for processing epoxy bushing for transformer sleeves. Unlike conventional milling, the thickness of the material contacted by the cutting edge decreases during climb milling. This physical characteristic reduces heat retention in the cutting zone. Combined with an appropriate feed increment, it can eliminate surface ripples, resulting in sleeves with an industrial-grade, fine texture.

Practical Tips for Improving Machining Accuracy

When adjusting parameters, the rigidity of the machine tool must be considered. Rigider equipment can support higher feed rates without inducing chatter. Using a dust extraction device to remove resin dust is equally important; this prevents dust accumulation at the cutting point and reduces frictional heat generation.