120 DEG. TiN HSS-E 8% Cobalt M42 Spot Drill Bit, Cemented Hss Spot Drill Fixed Point Aluminum Solid Carbide Drill Bits, High Speed Steel 2 Flute Right Hand Cut Nc Spot Drill Bit 90° Point, HSS M42 Bit Spotting Drills with 90 Degree Angle, 120° HSS-COBALT SPOT DRILL SET 6, 8, 10, 12mm, Nc Spot Drill Hss Carbide Stub Center Bits 60 90 120 Degree, Carbide Spot Drill NC Spotting Drill Set, Woodworking Metalworking & Multipurpose Drill Bits China Supplier Factory
120 DEG. TiN HSS-E 8% Cobalt M42 Spot Drill Bit Specifications
120° Spotting Drill
HSS-E 8% Cobalt M42
Processing Type Medium Cutting
Feature Ingenious craft
Stable performance
Wide range of applications
Light and fast cutting
Various specifications
Standard ISO
Quantity 1pcs/box
Surface Finish Black Oxide (Black White, Gray Bright)
Package Plastic Box
Customized Support OEM, ODM
FAQ
Q1. Excessive aperture
Reasons: 1. The cemented carbide drill is not well clamped, and the runout of the spindle itself is too large
2. Asymmetrical sharp angle, excessive blade height difference, eccentric cross blade
Solution: 1. select high-quality tool handle and fixture, calibrate the spindle, and carefully measure and adjust each time the drill is clamped
2. Re sharpen and correct, and check the accuracy after sharpening
Q2. Poor consistency of aperture
Reasons: 1. Asymmetrical sharp angle, too large difference in blade height, eccentric transverse edge, and too much wear on edge surface
2. The cemented carbide drill bit is not properly clamped, the runout of the spindle itself is too large, and the workpiece is not firmly clamped 120° Spotting Drill HSS-Cobalt M35
3. Excessive feed speed
4. Insufficient cutting fluid supply
Solution: 1. Re sharpen the drill and check the accuracy after sharpening
2. Select a good tool handle and fixture, calibrate the spindle, and carefully measure and adjust each time the drill is clamped
3. Reduce the feed speed of cemented carbide drill
4. Change the cutting fluid supply method and increase the flow). 90° Long Spotting Drill HSS-Co M35
Q3. Poor hole straightness and verticality
Reasons: 1. Excessive tool wear
2. Asymmetrical sharp angle, excessive blade height difference, eccentric cross blade
3. Insufficient rigidity
4. Uneven cutting plane
Solution: 1. Re sharpen
2. Re sharpen and correct, and check the accuracy after sharpening 90° CARBIDE SPOTTING DRILL BIT HARD-X Coated
3. Improve the rigidity of machine tools, jigs, cemented carbide drills, etc
4. Check the levelness of the pre machined surface
Q4. Poor hole location and poor consistency of center distance
Reasons: 1. The drill bit is not properly clamped, and the spindle itself has excessive runout
2. Deviation during cutting
3. Machine tool accuracy loss
4. The centering effect of cemented carbide bit is poor, and the cross edge is eccentric HSS-E (M35 Cob) Red-X Coated NC SPOTTING DRILL BIT
Solution: 1. select a good tool handle and fixture, calibrate the spindle, and carefully measure and adjust each time the drill is clamped
2. Improve the rigidity of the cutter and machine tool, and the rigidity of the workpiece and fixture. Use the drill type with good cutting performance, and check the levelness of the cutting surface
3. Check the accuracy of the machine tool
4. Re sharpen the carbide bit, and check the accuracy after sharpening 90 DEG. HSS-E M35 COBALT TiN Coated NC SPOTTING DRILL BIT
|
SIZE
|
Diameter
|
Total Length
|
Flute Length
|
Cutting Angle
|
|
3.0
|
3
|
46
|
12
|
60° / 90° / 120°
|
|
4.0
|
4
|
55
|
14
|
60° / 90° / 120°
|
|
5.0
|
5
|
62
|
16
|
60° / 90° / 120°
|
|
6.0
|
6
|
66
|
18
|
60° / 90° / 120°
|
|
7.0
|
7
|
70
|
20
|
60° / 90° / 120°
|
|
8.0
|
8
|
79
|
22
|
60° / 90° / 120°
|
|
9.0
|
9
|
84
|
24
|
60° / 90° / 120°
|
|
10.0
|
10
|
89
|
26
|
60° / 90° / 120°
|
|
11.0
|
11
|
95
|
28
|
60° / 90° / 120°
|
|
12.0
|
12
|
102
|
30
|
60° / 90° / 120°
|
|
13.0
|
13
|
102
|
32
|
60° / 90° / 120°
|
