CN2079544U - Group twist drill capable of drilling deeply - Google Patents
Group twist drill capable of drilling deeply Download PDFInfo
- Publication number
- CN2079544U CN2079544U CN 90209890 CN90209890U CN2079544U CN 2079544 U CN2079544 U CN 2079544U CN 90209890 CN90209890 CN 90209890 CN 90209890 U CN90209890 U CN 90209890U CN 2079544 U CN2079544 U CN 2079544U
- Authority
- CN
- China
- Prior art keywords
- cutting edge
- cutting
- deep hole
- chip
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Abstract
The utility model discloses a drilling bit especially used for machining large diameter deep hole for metal articles. The utility model is provided with a first crescent slot and a second crescent slot on the cutting part of the existing deep-hole twist drill; a first circular arc edge, a first outer edge angle, a first feather edge angle, a second circular arc edge, and a second outer feather edge angle are formed. Three chip breaker grooves are opened at the front cutter surfaces of the lower parts of a main cutting edge, a first end cutting edge, and a drill tip. The cutting part of the drill bit is provided with an oil injecting groove and a cooling bath. By using the drill bit, the center of the processed work piece is positioned accurately, the service life of the drill bit can be increased by 6 to 8 times, and the borrow effect is good in the cutting process; the utility model has the advantages of high stability, good cooling effect, small cutting resistance, good cutting force, fluent chip removal, and no drill bit blocking phenomenon.
Description
The utility model relates to metal cutting tool, especially a kind of drill bit that is exclusively used in processing metal spare large aperture deep hole.
It is a lot of that the machinery industry is used for the tool category of deep hole machining, and commonly used have fried dough twist depth drill, a side set depth drill of interior chip removal etc., above-mentioned drill bit in use remains in some defectives, as since main cutting edge long, cutting width is big, the chip removal difficulty need be proposed the brill chip removal, otherwise can cause tool damage because smear metal is blocked, cooling condition is poor in addition, cutting speed is slow, and work efficiency is low, and precision and stability are all poor.
The purpose of this utility model is the deficiency that exists at above-mentioned drill bit, and it is good to design a kind of cooling condition, and chip-breaking performance is good, and chip removal is the deep hole Group twist drill smoothly.
Solution of the present utility model is: having now by the drilling rod part with by apex point, have chip dividing groove main cutting edge, seamed edge, and the bit cutting part drill bit dimerous basis that constitutes of front cutting edge on, whole cutting tip is improved, that is: symmetry has first crescent on the main cutting edge between apex point and the chip dividing groove, forms the first circular arc sword and the first outer cutting edge angle; Symmetry has second crescent on first front cutting edge between chip dividing groove and the seamed edge, forms the first cutting edge angle, the second circular arc sword and the second outer cutting edge angle; At main cutting edge, first front cutting edge and apex point below rake face equality row example have three road chip breaking platform troughs; Cooling bath stage casing and drill bit middle part at the second crescent side have the oil spout groove; At least have a cooling bath that intersects with chip dividing groove on the bit cutting part two back knife faces.
The utility model makes and has six main cutting edges on this drill bit by setting up crescent, four crescents, article four, land, changed original cutting level, concentrated the advantage of various drill bits, its boring working angles is: apex point contact work metal spare surface is arranged earlier, the chisel edge cutting, make the metalwork surface cut become a circle eye, along with the increase of circle eye and the increase of the degree of depth, the first outer cutting edge angle and main cutting edge enter cutting position, serve as main cutting task, enter first front cutting edge by chip dividing groove then, cut with having levels, the cutting of monoblock is become from level to level cutting, after the second circular arc sword of second crescent enters cutting position, its cutting basil is holed with metalwork blocks mutually, and drill bit is not swung in boring procedure, guarantees the perpendicularity of drill bit and work metal spare.The second outer cutting edge angle is in working angles, and main steadily, and smoothing replaces the effect of reamer, and the chip breaking platform trough that this drill bit rake face increases mainly plays the chip breaking effect in working angles, smear metal is discharged smoothly.Above-mentioned working angles has reached to bore the generation expansion, to bore the generation hinge, to bore for the purpose of scraping group's flower deep hole drill of the present utility model in boring procedure.
Group flower deep hole drill of the present utility model has: the centralized positioning of work piece hole is accurate, in the working angles borrow good, good stability, good cooling results, cutting resistance is little, cutting force is good, chip removal is smooth, can not produce to stop up the drill bit phenomenon.Can improve drilling life of bit 6-8 doubly.
Concrete structure of the present utility model is provided by the following drawings and embodiment.
Fig. 1 represents group colored deep hole drill master TV structure signal;
Fig. 2 is the left TV structure signal of group's flower deep hole drill shown in Figure 1.
Embodiment: on scheming, can be clear that group colored deep hole drill is a kind of improvement on existing fried dough twist deep hole drill basis, this bit cutting part 6 also has apex point 1, have the main cutting edge 3 of chip dividing groove 2, seamed edge 4, and front cutting edge 5, its improvement project is that symmetry is offered first crescent 7 on the main cutting edge 3 between apex point 1 and the chip dividing groove 2, form the first circular arc sword 8 and the first outer cutting edge angle 9, symmetry is offered second crescent 11 on first front cutting edge 10 between chip dividing groove 2 and the seamed edge 4, form the second circular arc sword 12, differing height h between the first cutting edge angle 13 and 14, the first cutting edge angles 13, the second outer cutting edge angle and the second outer cutting edge angle 14 is 4-6mm; The parallel example has three road chip breaking platform troughs 16,17,18 on main cutting edge 3, first front cutting edge 10, the apex point 1 below rake face 15, and the width of chip breaking platform trough 16 is 5-6mm, and the width of chip breaking platform trough 17,18 is 3-4mm, and the degree of depth is 1-3mm; Cooling bath 19 stage casings of second crescent, 11 sides and drill bit middle part 24 have oil spout groove 20,21; Oil spout groove 20 and 21 width are 10mm, and the degree of depth is 2mm; At least have a cooling bath 23 that intersects with chip dividing groove 2 on the two back knife faces 22 of bit cutting part 6, the width of cooling bath 23 is 2-3mm, and the degree of depth is 1-1.5mm, and the rear end of drill bit is a drilling rod 25.
Claims (5)
1, a kind of metal cutting tool, especially a kind of group flower deep hole drill that is exclusively used in processing metal spare large aperture deep hole comprises drilling rod 25 and by apex point 1, have the main cutting edge 3 of chip dividing groove 2, seamed edge 4, and the bit cutting part 6 of front cutting edge 5 formations is characterized in that:
A) symmetry has first crescent 7 on the main cutting edge 3 between apex point 1 and the chip dividing groove 2, forms the first circular arc sword 8 and the first outer cutting edge angle 9;
B) symmetry has second crescent 11 on first front cutting edge 10 between chip dividing groove 2 and the seamed edge 4, forms the second circular arc sword 12, and the first cutting edge angle 13 and the second outer cutting edge angle 14;
C) main cutting edge 3 and first front cutting edge 10 have three road chip breaking platform troughs 16,17,18 to apex point 1 below rake face 15;
D) cooling bath 19 stage casings of second crescent, 11 sides and drill bit middle part 24 has oil spout groove 20,21;
E) have 1 cooling bath 23 that intersects with chip dividing groove 2 at least on the bit cutting part two back knife faces 22.
2, group's flower deep hole drill according to claim 1, it is characterized in that differing between the second outer cutting edge angle 14 and the first cutting edge angle 13 height h is 4-6mm.
3, group's flower deep hole drill according to claim 1, the width that it is characterized in that chip breaking platform trough 16 is 5-6mm, and the width of chip breaking platform trough 17,18 is 3-4mm, and the degree of depth is 1-3mm.
4, group's flower deep hole drill according to claim 1, the width that it is characterized in that oil spout groove 20 and 21 is 10mm, the degree of depth is 2mm.
5, group's flower deep hole drill according to claim 1, the width that it is characterized in that cooling bath 23 is 2-3mm, the degree of depth is 1-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209890 CN2079544U (en) | 1990-07-05 | 1990-07-05 | Group twist drill capable of drilling deeply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90209890 CN2079544U (en) | 1990-07-05 | 1990-07-05 | Group twist drill capable of drilling deeply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2079544U true CN2079544U (en) | 1991-06-26 |
Family
ID=4889860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90209890 Withdrawn CN2079544U (en) | 1990-07-05 | 1990-07-05 | Group twist drill capable of drilling deeply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2079544U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489752A (en) * | 2011-12-05 | 2012-06-13 | 重庆川东船舶重工有限责任公司 | Deep hole drill |
| CN107486578A (en) * | 2017-07-17 | 2017-12-19 | 株洲钻石切削刀具股份有限公司 | Cold fluted drill in one kind |
| CN110280813A (en) * | 2019-07-30 | 2019-09-27 | 丹阳林锐工具有限公司 | A kind of high efficiency drill |
| CN112453509A (en) * | 2020-11-25 | 2021-03-09 | 深圳市蓝海永兴实业有限公司 | Drilling reamer tool with staggered blades for hole machining of composite material |
-
1990
- 1990-07-05 CN CN 90209890 patent/CN2079544U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489752A (en) * | 2011-12-05 | 2012-06-13 | 重庆川东船舶重工有限责任公司 | Deep hole drill |
| CN102489752B (en) * | 2011-12-05 | 2016-06-22 | 重庆川东船舶重工有限责任公司 | Deep hole drill |
| CN107486578A (en) * | 2017-07-17 | 2017-12-19 | 株洲钻石切削刀具股份有限公司 | Cold fluted drill in one kind |
| CN110280813A (en) * | 2019-07-30 | 2019-09-27 | 丹阳林锐工具有限公司 | A kind of high efficiency drill |
| CN112453509A (en) * | 2020-11-25 | 2021-03-09 | 深圳市蓝海永兴实业有限公司 | Drilling reamer tool with staggered blades for hole machining of composite material |
| CN112453509B (en) * | 2020-11-25 | 2021-08-06 | 深圳市蓝海永兴实业有限公司 | Drilling reamer tool with staggered blades for hole machining of composite material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |