Heat Sink Manufacturer

Thin-Form Chip Saw / Grooving Process
Achieved significant cost reduction through an innovative cutting edge geometry

The Customer's Problem

・When heat sink grooves are perfectly straight, chamfering causes distortion in the chamfered areas, resulting in unstable machining quality.
・To improve cooling performance, the customer wants to reduce the spacing between fins and increase their quantity.
・Although carbide saws are currently used to narrow fin spacing, the cost burden is significant.

Our Approach

・By adding an angle to the forming groove of the chamfering section for grooving applications, the shape of the chamfered area was stabilized.
・While conventional chip saws were limited to a 45° groove angle between fins, our proprietary special grinding process enabled sharper angles below 45°, allowing narrower fin spacing and an increased number of fins.
・Although carbide saws addressed the thin-groove requirement, their high cost was a major issue. By switching to chip saws, tooling costs were significantly improved at every stage, resulting in substantial cost reduction.

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