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Chipbreakers break up chips into smaller debris which eject faster.
Chipbreakers can thus benefit the cutting operation by:
• increasing feedrates and therefore bigger chipload
• lowering cutting temperature
• improve chip ejection
The actual chipbreakers/serrations along the flutes are arranged in a staggered format, ensuring that one flute cuts with a breaker and one flute cuts with a finishing cut.
Chipbreakers versus Roughing Spirals (Hogger bits)
• main difference is tool geometry relating to the chipbreaker arrangement
• breakers are staggered on a 'chipbreaker' and each breaker is always complemented with a finishing flute
• roughing spirals have continuous breakers with no finishing flute to smooth the edge, literally shred the chip
• roughing spirals produce the smallest chip but at a loss of surface finish
• higher feedrates can be achieved with roughing spirals
CNC common practice:
• chipload is reduced by 25% when DOC exceeds 2 × CED
• chipload is reduced by 50% when DOC exceeds 3 × CED
Chipbreakers can reduce the 25% and 50% chipload loss because of better chip ejection; so faster feeds at greater DOC.
Recommended for thicker stock and CNC nesting, including hardwoods, softwoods, plywood, MDF, engineered boards and solid surface cut-outs where finish is of lesser concern.
|Make #||Shank||D(mm)||c/l(mm)||o/a(mm)||features||material||flute||Item Price Ex. VAT||Item Price Inc. VAT|
|Whiteside RD5125CB||12.7 mm (1/2")||12.7||31.75||76.2||down cut||solid tungsten carbide||2||£ 46.68||£ 56.02||Buy / Details|
|Whiteside RD5150CB||12.7 mm (1/2")||12.7||38.1||88.9||down cut||solid tungsten carbide||2||£ 48.79||£ 58.55||Buy / Details|
|Whiteside RD5200CB||12.7 mm (1/2")||12.7||50.8||101.6||down cut||solid tungsten carbide||2||£ 57.29||£ 68.75||Buy / Details|