Layers Increased

Single Flute0.3*6.2 Drills processing Case

Drills：Ordinary 0.3*6.2 Single Flute 0.3*6.2 sheet Materials FR4 T1.5-4L

Revolution Speed：140krpm   Falling Speed：100ipm Retract：1000ipm Hole Limit：H3000

Cover Board：Ordinary Aluminum Sheet 0.20mm  Backing Plate：Wood Backing Plate2.5mm

Conclusion：The single flute drill has a unique design , It still can remain good precision on

 Hole's position even if we increased layers on workpieces

Drilling life improvement

Single Flute0.35*5.5 Drills processing Case

Drills：Ordinary 0.35*5.5 Single Flute 0.35*5.5  sheet Materials:HTG T1.0*3-10L

Revolution Speed：135krpm  Falling Speed：104ipm Retract：1000ipm Hole Limit：Refer to below Chart

Cover Board：Ordinary Aluminum Sheet0.20mm Backing Plate：Wood Backing Plate2.5mm

Hole’s Position precision Improvement

Single Flute0.35*5.5 Drills processing Case

Drills：Ordinary 0.40*6.5 Single FluteΦ0.40*6.5 sheet Materials： FR4 T1.6*3-6L

Revolution Speed：120krpm   Falling Speed：110ipm Retract：1000ipm Hole Limit：H2500

Cover Board：AL 0.20T Backing Plate：1.5TPhenothalin board

Conclusion：Due to the unique design of single flute drill, it can drastically get improvement of hole's position precision base on

 same processing condition, it can help customers to reduce scrappage because hole deviation and production cost

Top Tip

Testing Machine：HITACHIdrill machine(160KRPM) 

Testing sheet Materials：HF TaiguangT1.6*2pnl 8layers

Testing Cover board：Aluminum Sheet 0.15t   

Testing Backing Plate：Phenothalin board

Processing Condition：S155krpmF40mm/s  Hit Coefficient：H3000

Testing Data:Refer to below Chart

Testing result：The single flute drill have a excellent performance on hole’s position which remains a good inner

 drilling quality. The testing data can meet customer’s requirements in industry

The levels of roughness for wall of hole

Testing machine：HITACHI Drilling machine(160KRPM)

Testing Sheet Material：R1705 T1.6*2pnlDouble-sided board

Testing cover board：Aluminum sheet 0.15t  Testing Backing Plate：Phenothalin board

Processing Condition：S145krpmF45mm/s  Hit Coefficient：H3000

Result : level of roughness of wall of hole