BM Series: Edge Honing (Brushing) Machines for PcBN, PCD and Carbide

Brushing the edges of PcBN inserts enhances tool life significantly by a factor of two or three times. The brushing process removes the grinding marks which tend to initiate premature cracks on these brittle tool materials. Brushing PCD edge is also becoming popular.

There are 3 machine options available:

BM2A – this is a three station machine and is filted with a spindle drive rather than a motor. The PCD_PCBN/PCD tipped inserts are held in carriers at each statio. The stations move in a planetary motion and the brush, suitably loaded with diamond powder/paste, works from above. The brush load can be adjusted and the brushing time and brush rotation direction are timer controlled.

BM2B – this has the same 3 stations , as above, but uses a motor for the main drive.

BM3A - this is a single station machine with a spindle drive for lower volumes of production.

BM3B – this is a single station machine with an economy motor drive.

 
 
 
 
THE STRENGTHS - BM2/3
  • Allows tool life of PcBN inserts to be enhanced significantly

  • Typical cycle time of 3 – 5 minutes on PcBN

  • BM2A and BM3A are fitted with a 0.55kW Coborn spindle, sealed for life to give years of trouble free operation

  • BM2B and BM3B are filted with an economy motor drive

  • Tool rotation speed adjustable

  • Timer and brush pressure can be set to control degree of edge hone

  • Complex planetary motion and brush motion ensures tool radii and flanks are brushed uniformly

  • Brush fitted with natural hair bristles

  • Brush direction can be reversed to ensure uniform brush wear pattern

  • Carrier plates to any ISO insert format can be supplied

  • Can also be used to hone the edges of cemented carbide inserts