Xcleen

+91 98672 30466

Drilling

Home Cutting Tools Drilling
Drill Parts

Drill Parts

Precision-crafted components engineered to maximize tool performance and reliability.

Point Angle and Force

Relief Angle

Point Angle and Burrs

Web Thinning

Chisel Width
Decreasing

Relation - edge treatment & cutting force

Drill Retention

Collect Selection and Maintenance

Ensure proper chucking of drills to prevent vibration. Collet type chucks are recommended, as the grip is strong and can be used with ease When replacing drills, regularly remove cutting chips inside the collet by cleaning the collet and the spindle with oil. Repair marks with an oilstone.

Drill Mounting

The peripheral runout of the drill mounted on the spindle must be within 0.03mm. D Do not chuck on the drill flute

If the drill flute is inside the holder, chip evacuation will be obstructed, causing damage to the drill.

Clamping of workpiece

High thrust forces occur during high-efficiency drilling. Therefore, the workpiece must be supported to prevent fractures caused by deformation. Large torques and horizontal cutting forces also occur. Therefore, the workpiece must be clamped firmly enough to withstand them.

Power Consump. & Thrust

Power consumption (kW) = HB×DC0.68×vc 1.27×f 0.59/36,000
Thrust (N)=0.24×HB×DC0.95×f 0.61×9.8

  • Ensures proper functioning of electrical components and indicators
  • To avoid uneven or excessive wear and tear, make sure to rotate the tires
  • We can help restore clarity to old headlights or replace them if they have turned colour
  • Equipped with the latest technology and experienced technicians

Like any other parts in your car, the batteries also need to be tested during car services to ensure it performs optimally and lasts longer. Over time, your car battery can deteriorate and the car engine may have trouble starting up.

Using Cutting Oil

Choosing Cutting Oil

If the cutting speed is more than 40m/min, cutting oil (JISW1 type 2) is recommended as its cooling effects and chip control capacity are good, and it is highly soluble. D For optimum tool life at cutting speeds of less than 40m/min, sulfo-chlorinated oil (JISA1 type 1) is recommended as it has a lubricating effect and is non-water soluble. * Insoluble cutting oil may be flammable. To prevent fire, a substantial amount of oil should be used to cool the component so that smoke and heat will not be generated

Supply of Coolant

External Coolant Supply There must be a sufficient external supply of coolant at the hole position. Coolant pressure 0.3 to 0.5MPa, coolant volume 3 to 10M/min is a guideline. D Internal Coolant Supply For holes ø4 or smaller, the oil pressure must be at least 1.5MPa to ensure a sufficient supply of coolant. For ø6 and above, if L/D is < 3, the pressures should be at 0.5 to 1.0MPa. If L/D is> 3, a hydraulic pressure of at least 1 to 2MPa is recommended.

Drill Regrinding

When to regrind When one or two feed marks (lines) appear on the margin, when corner wear reaches the margin width or when small chipping occurs, it indicates that the drill needs to be sent for regrinding. Regrind promptly. D How and where to regrind We recommend regrinding and recoating. Regrinding alone is fine, but if the work material is steel, recoating is recommended to prevent shortening of tool life. Note: Ask us or an approved vendor to recoat with our proprietary coating. D Regrinding on your own Customers regrinding their own drills can obtain MULTIDRILL Regrinding Instructions from us directly or their vendor.

  • Ensures proper functioning of electrical components and indicators
  • To avoid uneven or excessive wear and tear, make sure to rotate the tires
  • We can help restore clarity to old headlights or replace them if they have turned colour
  • Equipped with the latest technology and experienced technicians

Like any other parts in your car, the batteries also need to be tested during car services to ensure it performs optimally and lasts longer. Over time, your car battery can deteriorate and the car engine may have trouble starting up.

Troubleshooting for Drilling

# Failure Cause Basic Remedies Countermeasure Examples
1 Excessive Wear on Rake Face Inappropriate cutting conditions
  • Use higher cutting speeds
  • Increase feed rate
 Refer to the upper limit of recommended cutting conditions
Unsuitable coolant
  • Use internal coolant to reduce heat
  • Use coolant with more lubricity
  • 1/3Mc or less steam supply, 3x air at workbench LEA 2 or less
  • Use JIS A1 grade No. 1 or equivalent
Chisel Point Breakage
  • Reduce heat at entry
  • Pre-machine flat surface
  • Clamp cutting conditions to reduce resistance
 f = 0.05–0.12 mm/rev
2 Equipment/workpiece lack rigidity Cutting edge is too weak
  • Improve clamping
  • Increase feed rate
  • Increase honing
  • Drill flat base with FLAT MULTIDRILL
  • Increase f0 to reduce f (thrust)
Breakage on Peripheral Cutting Edge
  • Use 0.1–0.2mm chisel
  • Widen center finish area by 1.5x
 Refer to lower limit of recommended cutting conditions
3 Inappropriate cutting conditions Decrease cutting speed Reduce feed rate Refer to lower limit of recommended cutting conditions
Unsuitable coolant Use coolant with more lubricity Use JIS A1 grade No. 1 or equivalent
Same as metal at no rate Improve clamp strength
Cutting edge is too weak
  • Increase honing
  • Reduce front relief angle
  • Widen outer cutting edge 1.5x
  • Reduce relief angle by 3–5°
4 Fine Marginal Cutting Edge Increase margin width Reduce feed rate Increase margin width by 2–3x
Internal during sharpening
  • Increase honing
  • Reduce front relief angle
  • Use lower limit of cutting conditions
  • Widen outer cutting edge by 1.5x
Margin Wear
  • Decrease cutting speed
  • Reduce wear
  • Reduce relief angle by 2–5°
  • Use lower limit of cutting conditions
Unsuitable coolant
  • Use more/lubricating coolant
  • Use JIS A1 No. 1 or equivalent
  • Use internal coolant
Remaining margin wear
  • Regrind early
  • Increase back taper
  • Regrind to ≤1mm if damaged
  • Back taper: 0.4/100
5 Improper Tool Design Reduce margin width
  • Use optimal tools/conditions
  • Use more coolant
  • Reduce margin width to 2/3
  • Refer to catalogue
Drill Breakage (Chip blockage) Use more coolant Use internal coolant
Clamp too weak Use collet with strong grip
  • Replace damaged chuck
  • Use larger holder
6 Oversized Holes Weak workpiece clamp
  • Increase entry feed
  • Decrease cutting speed
  • f = 0.05–0.12 mm/rev
  • Use lower limit of cutting conditions
Off-centre starts Pre-machine flat surface Flat machining with end-mill
Low drill rigidity
  • Use suitable drill type
  • Improve rigidity
  • Refer to catalogue
  • Large web, small groove width
7 Drill Runout Low mounting precision Improve drill retention
  • Replace damaged chuck
  • Use larger holder
Weak clamp strength
8 Poor Surface Inappropriate cutting conditions
  • Increase speed
  • Reduce feed
  • Use upper/lower limit of catalogue
Roughness Use coolant with more lubricity Use JIS A1 No. 1 or equivalent
Ridge-like Increase feed rate Use upper limit of catalogue
Straight
  • Improve mounting
  • Improve retention
  • Replace damaged chuck
  • Use larger holder
9 Improper Drill Mount Weak clamp strength Select double margin tool Refer to catalogue
Equipment lacks rigidity
10 Chip Clogging Bad cutting conditions
  • Increase speed
  • Increase feed
  • Use upper limit of catalogue
Poor chip evacuation Increase feed using internal coolant
Long Stringy Chips
  • Increase feed
  • Increase speed
  • Use upper limit of catalogue
Strong cooling effect
  • Reduce internal coolant pressure
  • Reduce edge honing
  • ≤1 MPa pressure
  • Reduce width