Hole Guide Saw Metalworking Self Centering Opener Pilot Drill
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Product Details
| Customization: | Available |
|---|---|
| Customized: | Customized |
| Standard: | AISI, Carbide Alloy |
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Basic Info.
- Model NO.
- Center drill
- Length
- Jobber-length
- Type
- Center Drill Bit
- Material
- High Speed Steel
- Usage
- Wood Drilling, Metal Drilling
- Raw Materials
- 6542 or M35 or M42
- Handle
- Cylindrical Handle
- Angel
- 60 or 90 or 120 Degree
- Body Length
- 49-138mm
- Transport Package
- Wooden Box
- Specification
- small
- Trademark
- EDWIN
- Origin
- China
Product Description
Overview :
It is suitable for initial hole processing of pre-drilled holes to ensure the accuracy of drilling processing with ordinary drill bits;
Reserve chamfers for tapping to facilitate tapping processing
How to distinguish between pilot drills and center drills :
Center drilling: center drilling point hole + chamfering → drilling
Center drilling: Drill a point hole in the center → Drill the right arrow and chamfer with the chamfering knife
Why choose us?
*The surface of the fully ground cutting edge is titanium-plated, and its hardness is higher than that of the raw material. The cutting edge is sharp, strong and durable, and has excellent processing performance when drilling workpiece materials.
*The five-axis process grinding wheel is ground and formed in one go, and the accuracy of fixed-point chamfering is high.
*Processed from high-quality raw materials such as high-speed steel 6542, cobalt-containing M35, and cobalt-containing M42, it has high wear resistance.
*The two large chip grooves are processed by ultra-fine grain grinding wheels, and the unique shape of the chip flutes prevents the generation of chip accumulation.
*Universal chamfered round handle, clamping and fastening, quick assembly, widely used.
Precautions :
*The center drill can only be used for fixing, drilling and chamfering, and must not be used for drilling.
*Be sure to test the tool deflection before use. If it exceeds 0.01MM, please correct it first.
*The shorter the length of the tool protruding from the chuck, the better. If the tool protrudes longer, the rotation speed, feed speed or cutting amount needs to be reduced.
*The verticality of the electric hand drill cannot be guaranteed, so it is not recommended for buyers to use it.
*The cutting edge of the knife is sharp, please do not let children touch it and play with it.
*Before drilling, use a fixed-point drill to drill an initial hole with a depth of 1-2 times the diameter to ensure the accuracy of drilling with ordinary drills, and reserve chamfers for the tap to facilitate tapping processing;
*Fixed-point drilling with drill is suitable for high-speed, long-term drilling, dry processing, etc. before drilling;
*The top angle of the fixed-point drill should be equal to or greater than the final top angle of the micro-drill (if the top angle of the fixed-point drill is small, then when the micro-drill cuts in, the two cutting edges will contact the workpiece before the tip, which can easily cause chipping)
Centering drill selection method :
The center drill is formed by centering and chamfering in one step.
For example, if you want to process a 5mm hole (d1), you usually choose a 6mm*90" center drill (d2) so that subsequent drilling will not be offset and you can get a 0.5mm*90° chamfer.
Technical Data :
"·" means customizable production
It is suitable for initial hole processing of pre-drilled holes to ensure the accuracy of drilling processing with ordinary drill bits;
Reserve chamfers for tapping to facilitate tapping processing
How to distinguish between pilot drills and center drills :
Center drilling: center drilling point hole + chamfering → drilling
Center drilling: Drill a point hole in the center → Drill the right arrow and chamfer with the chamfering knife
Why choose us?
*The surface of the fully ground cutting edge is titanium-plated, and its hardness is higher than that of the raw material. The cutting edge is sharp, strong and durable, and has excellent processing performance when drilling workpiece materials.
*The five-axis process grinding wheel is ground and formed in one go, and the accuracy of fixed-point chamfering is high.
*Processed from high-quality raw materials such as high-speed steel 6542, cobalt-containing M35, and cobalt-containing M42, it has high wear resistance.
*The two large chip grooves are processed by ultra-fine grain grinding wheels, and the unique shape of the chip flutes prevents the generation of chip accumulation.
*Universal chamfered round handle, clamping and fastening, quick assembly, widely used.
Precautions :
*The center drill can only be used for fixing, drilling and chamfering, and must not be used for drilling.
*Be sure to test the tool deflection before use. If it exceeds 0.01MM, please correct it first.
*The shorter the length of the tool protruding from the chuck, the better. If the tool protrudes longer, the rotation speed, feed speed or cutting amount needs to be reduced.
*The verticality of the electric hand drill cannot be guaranteed, so it is not recommended for buyers to use it.
*The cutting edge of the knife is sharp, please do not let children touch it and play with it.
*Before drilling, use a fixed-point drill to drill an initial hole with a depth of 1-2 times the diameter to ensure the accuracy of drilling with ordinary drills, and reserve chamfers for the tap to facilitate tapping processing;
*Fixed-point drilling with drill is suitable for high-speed, long-term drilling, dry processing, etc. before drilling;
*The top angle of the fixed-point drill should be equal to or greater than the final top angle of the micro-drill (if the top angle of the fixed-point drill is small, then when the micro-drill cuts in, the two cutting edges will contact the workpiece before the tip, which can easily cause chipping)
Centering drill selection method :
The center drill is formed by centering and chamfering in one step.
For example, if you want to process a 5mm hole (d1), you usually choose a 6mm*90" center drill (d2) so that subsequent drilling will not be offset and you can get a 0.5mm*90° chamfer.
Technical Data :
| D(mm) | Length( mm ) | L1(mm) | 60o | 90o | 120o | HSS 6542 | Cobalt M35 | High Cobalt M42 |
| 2.0 | 49 | 8 | · | · | · | · | ||
| 3.0 | 50 | 10 | · | · | · | · | · | · |
| 4.0 | 52 | 12 | · | · | · | · | · | · |
| 5.0 | 60 | 15 | · | · | · | · | · | · |
| 6.0 | 66 | 20 | · | · | · | · | · | · |
| 8.0 | 79 | 25 | · | · | · | · | · | · |
| 10.0 | 89 | 25 | · | · | · | · | · | · |
| 12.0 | 102 | 30 | · | · | · | · | · | · |
| 14.0 | 115 | 35 | · | · | · | · | · | · |
| 16.0 | 115 | 35 | · | · | · | · | · | · |
| 18.0 | 130 | 40 | · | · | · | · | ||
| 20.0 | 131 | 40 | · | · | · | · | · | · |
| 25.0 | 138 | 45 | · | · | · | · |
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