Rohit Cutting Tools - Does Solid Carbide Drills on Inclined Surfaces causes headache to you ?

How to correctly use Solid Carbide Drills on Inclined Surfaces ?

When your Carbide Drill's are encountered with Inclined Surface at the Work-piece ENTRY ? What you should do>

• If Entry Angle = 1° To 5° ---> Reduce your Feed Rate to 1/3 i.e. to 33%
• If Entry Angle = 5° To 10° ---> Reduce your Feed Rate to 1/4 to 1/3 i.e 25~33%
• If Entry Angle greater than 10° ---> Caution: Never put our C3HS Or CTHS Carbide Drills directly instead first Mill a Flat Surface on the curved area with a 322 Series Flat End Mill and then with Drills Recommended parameters do the drilling with either C3HS-High Performance Carbide Drills Or CTHS Coolant Fed Drills

• Perform Centring Operation with a Short Carbide Spotting Drills first which should have a same Or Greater Point Angle so that your Solid Carbide Drills point angle is seated properly . So Always follow this rule that Spotting Drills Point Angle >= Carbide Drills Point Angle.
• Centring operation prevents deflection and extends the Tool life , also prevents drill breakage due to slippage and deflection which is common cause during

When your Carbide Drill's are encountered with Inclined Surface at the Work-piece EXIT ?

• If Exit Surface is Angled but less than 10° ---> Always reduce DRILLS RECOMMENDED FEED RATE to at least 1/3 (33%) and as much as 1/4 (25%) of the normal recommended Feed rate depending upon EXIT angle. More the EXIT ANGLE more reduction in the FEED.