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Hss 4341 Hss Twist Drill Bits Set 3/4" 13/16" 3/4" 1" For Cobalt Machine Tools

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Shenzhen Bwin Precision Tools Co., Ltd.

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4" 1" For Cobalt Machine Tools

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Brand Name :	BWIN
Model Number :	1"
Price :	Negotiable
Payment Terms :	T/T, Western Union,
Supply Ability :	1-10000pcs 7days
Delivery Time :	7 work days

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Hss 4341 Hss Twist Drill Bits Set 3/4" 13/16" 3/4" 1" For Cobalt Machine Tools

Tungsten Carbide Drill Bits Hss 4341 Twist Set Cobalt Machine Tools 3/4" 13/16" 3/4" 1"

Quick Detail:

Sharp blade
Easy punching
Robust and durable
Smooth chip removal
Simple and portable
Wide scope of application

Description:

Made of high-quality high-speed steel, sharp and wear-resistant, with higher hardness and strong wear resistance
Large top angle design, double back angles, fast and accurate drilling, saving time and effort
Spiral design, effectively prevent the residue of chip buildup, with good chip removal performance
Triangular anti-skid design, supporting and fastening, no slip, wider application
The tungsten carbide drill bits set is packed in aluminum box to prevent the drill bit from oxidation and rust, which can better protect the drill bit

Specifications:

Brand	BWIN
Model	3/4" Tungsten Carbide Drill Bits For Machine Tools
Workpiece	Cast iron/Steel /Stainless steel /Aluminum /copper
Type	Nail Tungsten Carbide Drill Bit
Material	Tungsten Carbide Drill Bits
Processing Type	Medium Cutting
Feature	Sharp blade
	Easy punching
	Robust and durable
	Smooth chip removal
	Simple and portable
Standard	ISO
Quantity	1pcs/box
Surface Finish	Black Oxide (Black White, Gray Bright)
Package	Plastic Box
Customized Support	OEM, ODM

Lead Time:

antity(pieces)	1 - 3000	>3000
Lead time (days)	7	To be negotiated

Parameter:

3D/5D External Cooling Cutting Parameters

Processed materials	Mild steel HB≤180		Prehardened steel -40HRC		stainless steel		cast iron		aluminium alloy		heat-resisting alloy

vc/(m/min)	60~120m/min		40~70m/min		25~40m/min		60~120m/min		60~14m/min		15~25m/min
D(mm)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)

2	14000	0.06~ 0.08	9500	0.06~ 0.08	5500	0.02~ 0.05	14000	0.06~ 0.08	16000	0.06~ 0.08	3200	0.02~ 0.04

3	9500	0.09~ 0.12	6300	0.09~ 0.12	3700	0.03~ 0.07	9500	0.09~ 0.12	10600	0.09~ 0.12	1200	0.03~ 0.06

4	7000	0.10~ 0.15	4700	0.10~ 0.15	2700	0.04~ 0.08	7000	0.10~ 0.15	8000	0.10~ 0.15	1600	0.04~ 0.07

5	5700	0.12~ 0.18	3800	0.12~ 0.18	2200	0.05~ 0.10	5700	0.12~ 0.18	6400	0.12~ 0.18	1250	0.05~ 0.09

6	4700	0.14~ 0.20	3100	0.14~ 0.20	1850	0.06~ 0.12	4700	0.14~ 0.20	5300	0.14~ 0.20	1050	0.06~ 0.11

8	3600	0.16~ 0.24	2400	0.16~ 0.24	1400	0.08~ 0.16	3600	0.16~ 0.24	4000	0.16~ 0.24	800	0.08~ 0.14
10	2800	0.18~ 0.27	1900	0.18~ 0.27	1100	0.18~ 0.27	2800	0.27~ 0.18	3200	0.18~ 0.27	600	0.10~ 0.16

12	2400	0.20~ 0.3	1600	0.20~ 0.3	930	0.12~ 0.20	2400	0.20~ 0.3	2700	0.20~ 0.3	500	0.12~ 0.18

14	2100	0.22~ 0.35	1400	0.22~ 0.35	800	0.13~ 0.22	2100	0.22~ 0.35	2300	0.22~ 0.35	450	0.13~ 0.2

16	1800	0.25~ 0.36	1200	0.25~ 0.36	700	0.25~ 0.36	1800	0.25~ 0.36	2000	0.25~ 0.36	400	0.14~ 0.23

18	1600	0.28~ 0.38	1100	0.28~ 0.38	620	0.28~ 0.38	1600	0.28~ 0.38	1800	0.28~ 0.38	350	0.15~ 0.25

20	1400	0.30~ 0.4	950	0.30~ 0.4	550	0.30~ 0.4	1400	0.30~ 0.4	1600	0.30~ 0.4	320	0.16~ 0.28

3D/5D internal cooling cutting parameter

Processed materials	Mild steel HB≤180		Prehardened steel -40HRC		stainless steel		cast iron		aluminium alloy		heat-resisting alloy

vc/(m/min)	60~120m/min		40~70m/min		25~40m/min		60~120m/min		60~14m/min		15~25m/min
D(mm)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)	N (min)	F (mm/r)

3	12700	0.09~ 0.12	7400	0.09~ 0.12	6300	0.03~ 0.07	12700	0.09~ 0.12	15000	0.09~ 0.12	1200	0.03~ 0.06

4	9600	0.10~ 0.15	5600	0.10~ 0.15	4700	0.04~ 0.08	9600	0.10~ 0.15	11000	0.10~ 0.15	1600	0.04~ 0.07

5	7600	0.12~ 0.18	4500	0.12~ 0.18	3800	0.05~ 0.10	7600	0.12~ 0.18	9000	0.12~ 0.18	1250	0.05~ 0.09

6	6400	0.14~ 0.20	3700	0.14~ 0.20	3200	0.06~ 0.12	6400	0.14~ 0.20	7400	0.14~ 0.20	1050	0.06~ 0.11

8	4800	0.16~ 0.24	2800	0.16~ 0.24	2400	0.08~ 0.16	4800	0.16~ 0.24	5600	0.16~ 0.24	800	0.08~ 0.14
10	3800	0.18~ 0.27	2200	0.18~ 0.27	1900	0.18~ 0.27	3800	0.27~ 0.18	4500	0.18~ 0.27	600	0.10~ 0.16

12	3200	0.20~ 0.3	1900	0.20~ 0.3	1600	0.12~ 0.20	3200	0.20~ 0.3	3700	0.20~ 0.3	500	0.12~ 0.18

14	2700	0.22~ 0.35	1600	0.22~ 0.35	1350	0.13~ 0.22	2700	0.22~ 0.35	3200	0.22~ 0.35	450	0.13~ 0.2

16	2400	0.25~ 0.36	1400	0.25~ 0.36	1200	0.14~ 0.25	2400	0.25~ 0.36	2800	0.25~ 0.36	400	0.14~ 0.23

18	2100	0.28~ 0.38	1200	0.28~ 0.38	1050	0.15~ 0.28	2100	0.28~ 0.38	2500	0.28~ 0.38	350	0.15~ 0.25

20	1900	0.30~ 0.4	1100	0.30~ 0.4	950	0.16~ 0.30	1900	0.30~ 0.4	2300	0.30~ 0.4	320	0.16~ 0.28

When using this tungsten carbide drill bits for the first time, try to cut at 90% of the cutting speed or 85% of the feed speed according to the above data, and then increase the cutting speed and feed rate one by one after the cutting condition is stable
This standard cutting condition is applicable to water-soluble cutting fluid
When installing the tool, please use a clean chuck with defects removed, and control the radial runout of the drill bit within 0.02mm
The cutting conditions in this table are applicable to situations with hole depth below 5D

Notice:

When drilling steel parts, please ensure sufficient cooling capacity and use metal cutting fluid.
Good drill pipe rigidity and guide rail clearance can improve drilling accuracy and bit life.
Please ensure the flatness and cleanness between the magnetic base and the workpiece.
When drilling thin plates, reinforce the workpieces. When drilling large workpieces, ensure that the workpieces are stable.
At the beginning and end of drilling, the feed rate shall be reduced by 1/3.
For materials with large amount of fine powder during drilling, such as cast iron, cast copper, etc., compressed air can be used instead of coolant to help remove chips.
Please remove the iron scraps wrapped on the drill body in time to ensure smooth chip removal.

Applications:

Our tungsten carbide drill bits could to be processed Alloy steel, Tool steel, carbon steel, stainless steel, Cast iron and Titanium alloy. Working material as following:

Hss 4341 Hss Twist Drill Bits Set 3/4" 13/16" 3/4" 1" For Cobalt Machine Tools

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

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).

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

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

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

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