CN201862821U - Cemented carbide shallow hole drilling blades capable of indexing - Google Patents
Cemented carbide shallow hole drilling blades capable of indexing Download PDFInfo
- Publication number
- CN201862821U CN201862821U CN2010202415660U CN201020241566U CN201862821U CN 201862821 U CN201862821 U CN 201862821U CN 2010202415660 U CN2010202415660 U CN 2010202415660U CN 201020241566 U CN201020241566 U CN 201020241566U CN 201862821 U CN201862821 U CN 201862821U
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- cutting edge
- main cutting
- chip
- carbide
- breaker
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Abstract
Disclosed are cemented carbide shallow hole drilling blades capable of indexing. The drilling blades are cemented carbide blades capable of indexing with sheet structures; and are rotated and symmetrically distributed around the rotation center axis to form a double-faced main cutting edge. The first main cutting edge and the second main cutting edge of the double-faced main cutting edge are arranged opposite to each other according to the rotation center; each main cutting edge of the double-faced main cutting edge is provided with curved surface type end surface chip breaker grooves formed by depressing the surface of the cemented carbide blade; the chip breaker surfaces formed by the chip breaker grooves are polygon inclined planes; and the chip discharging back surface of the chip breaker grooves is arranged from the top of the tip to the bottom of the blade. The shallow hole on the ends of steel rails can be drilled by the cemented carbide drilling tool combined by clamping; because each cemented carbide blade itself is provided with chip breaker grooves, the whole rigidity of the cutter hub is greatly increased; and because the integral cemented carbide blade is embedded on the cutter hub, the strength of the cemented carbide blade is greatly increased.
Description
Technical field
The utility model relates to a kind of boring processing blade, refers in particular to a kind of shallow hole drilling paring blade with carbide chip processing end of rail irregular surface.
Background technology
In machinery added, drilling was a kind of main machining mode, accounts for 25% of whole machining total amount; Described drilling just is meant and utilizes drilling tool to carry out drilling processing on the device of required boring; So be used for the drilling tool of drilling is the key of whole drilling processing.The drilling tool that is used for drilling at present is a lot, yet boring is but still based on the drilling tool of high-speed steel made (or claiming to bore flower), though the drilling tool low price of this high-speed steel made, make simple, but not wear-resisting, wearing and tearing easily, service life is short, therefore when the high hole of drilling deep hole or precision prescribed, the drilling tool difficulty of processing of high-speed steel made just increases greatly; And along with rigidity height such as Digit Control Machine Tool and machining centers, high-power lathe increasing requires also more and more highlyer to the drilling tool of drilling processing, and hope can have a kind of drilling tool that can be more wear-resisting than high-speed steel.Therefore carbide drill also just has been born, and carbide drill replaces high-speed steel drill can greatly improve the wearability of drilling tool, and this has also just greatly improved productivity ratio.Early stage carbide drill is the high speed steel twist drill of imitation standard, be the carbide chip of front end welding-on at drill bit, but cutting edge strength is poor like this, easy tipping, and time-consuming, efficient and low, quality can't guarantee.Existing carbide alloy is drilled with four classes, i.e. solid carbide drill, cemented carbide indexable insert formula drill bit, welded type carbide drill and replaceable carbide alloy crown drill bit.This patent has also been done objective commentary to the pluses and minuses of four types drill bit, has proposed the concrete improvement organization plan at replaceable carbide alloy crown drill bit.The achievement of patent is to change good stability in blade convenience, accurate intensity height, the use.
On the other hand, rail hole processing at present is that a kind of processing capacity is big, the machining that drilling tool consumption is many, but the used cutter of rail hole processing now still adopts traditional high-speed steel tool or carbide welding insert mostly, and the carbide chip that is welded is a kind of chip-breaker of not being with, so the difficulty of processing height, and rapid wear blade cutting tool, durability is low, and efficient is low, production cost height and quality instability.Necessary this is improved.
Only retrieve the patent that the following and the utility model have certain relation by preliminary search:
1, number of patent application is CN200780036058.X, the utility model name is called " method of fracture toughness of marginal layer that is used to improve the carbide-tipped cutter bit of drill bit ", this patent proposes a kind of method of fracture toughness of marginal layer of the carbide-tipped cutter bit that is used to improve drill bit, this drill bit is used for the hard material of impact type drilling processing, preferred rock or concrete.The combination that is characterised in that following various method steps of the present utility model: prepare a drill bit with carbide-tipped cutter bit of the profile carried out, by a kind of energy input of surface of machinery at least one regional area of the carbide-tipped cutter bit of carrying out profile is handled like this, promptly adopt the instrument of the no cusped edge that has a tool diameter that reaches 6mm in a large number respectively, steel ball for example, hammer, nail, roller, at least one regional area that they aim at carbide-tipped cutter bit with a kind of intrinsic momentum of quantitative adjusting is done work of deformation simultaneously on the marginal layer of regional area, form crackle in this is incorporated into local plastic deformation and internal pressure stress the marginal layer of being avoided in the processing of carbide-tipped cutter bit regional area in the marginal layer simultaneously.But the drilling tool that this patent proposed can not be suitable for the boring processing of rail.
2, number of patent application is CN200710135432.3, the utility model name is called " poly blade hard metal drill ", this patent proposes a kind of poly blade hard metal drill, comprise handle of a knife, chamfering cutting edge in the handle of a knife bottom, the screw thread processing sword in chamfering cutting edge bottom, centering sword in screw thread processing sword bottom, described chamfering cutting edge constitutes first groove with spiral-shaped and to extend the bottom in handle of a knife equally spacedly between the adjacent chamfering cutting edge; Described screw thread processing sword is with spiral and extend downwards along first bottom surface of chamfering cutting edge equally spacedly, constitute second groove that communicates with first groove between the adjacent chamfering cutting edge, described centering sword extends and converges each other in the centre to narrow one by one the contracting in center along second bottom surface of described screw thread processing sword, and each is felt relieved and constitutes the 3rd groove that communicates with second groove between the sword.This patent proposed is still the structure of similar common auger flower, has just changed material into carbide alloy.
In sum, existing various drilling tools are a kind of old spiral helicine version, but practical application finds this structure and have some defectives, still can not be suitable for the requirement of various borings fully; Especially for the stomidium on rail processing, because rail needs a kind of often irregular outer surface in surface of machining hole, and the degree of depth of being holed not is very dark, so belong to the shallow table hole processing of irregularity.This shallow table hole processing is bored flower with common helical form since the helical form brill the flowers are in blossom that the two sides bit-withdrawing slot is arranged, so intensity can be subjected to very big influence, drilling adds and is easy to man-hour the helical form drilling tool is fractureed.Therefore, in order to improve the intensity of drilling tool cutting edge, mostly present rail stomidium processing drilling tool is to adopt simple carbide chip of front end welding-on at drill bit to get main cutting edge as drilling tool, but this method just changes the front part of common fluted drill into carbide alloy with carbide chip, but because hard alloy blocks couples together by welding and drilling tool, so still exist cutting edge strength poor, easy tipping, and it is time-consuming, efficient is extremely low, the deficiency that quality can't guarantee is therefore necessaryly improved this.
The utility model content
The purpose of this utility model provides a kind of intensity better, and is difficult for tipping in order to overcome the deficiency of the stomidium processing drilling tool on the existing rail, the more wear-resisting special-purpose shallow hole drilling hole drill of novel rail paring blade.Use this kind drill insert can solve effectively that the rail surface irregularity causes boring colored tipping or Facing material makes the quick wear problems of drilling tool.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of Indexable hard alloy shallow hole drilling blade, drill insert is the indexable carbide chip that changes the outfit, carbide chip is a laminated structure, and carbide chip is symmetrically distributed with the rotation of drilling tool rotation central axis; Carbide chip is symmetrically distributed according to the pivot axis and forms two-sided main cutting edge, and first main cutting edge and second main cutting edge of two-sided main cutting edge are arranged in opposite directions according to pivot; The sharp angle h of carbide chip is 118 °～135 °, and primary clearance f is 7 °～11 °, and front clearance d is 6 °～9 °; Has the curved face type end face chip-breaker that caves inward by the carbide chip surface behind the main cutting edge of each main cutting edge of two-sided main cutting edge, the angle beta that chip-breaker is caved inward by main cutting edge is 7 °～15 °, chip-breaker 4 formed disconnected bevels are the polygon inclined-plane, the back side that goes out to cut of chip-breaker is the oblique layout in bottom from the sharp point top to blade, and the oblique angle C that goes out to cut the back side and rotary middle spindle is 15 °-20 °; The angle α that goes out to cut the back side and chip-breaker polygon inclined-plane is 110 °～145 °, is beneficial to chip removal; Each main cutting edge one side symmetric arrangement at sharp angle and chisel edge place has the sharp angle chip-breaker, to reduce cutting resistance; The sharp angle chip-breaker is oblique layout; Carbide chip is a symmetry with the pivot axis, is distributed with two reverse counterbores in first main cutting edge of two-sided main cutting edge part with the second main cutting edge part two sides; Bottom at carbide chip has locating groove, and carbide chip is inlaid in by locating groove on the draw-in groove of tool bodies, is fixed on the cutter hub from the two sides with carbide chip respectively by securing member again, and it is firm to make it clamping.Thereby improve the durability and the production efficiency of blade, stabilised quality.
The beneficial effects of the utility model are: by clamped combination carbide drill the end of rail shallow bore hole is processed, owing on carbide chip, itself be provided with chip-breaker, can no longer on cutter hub, open helicla flute, therefore improve the integral rigidity of cutter hub greatly, and be to adopt whole carbide chip to be embedded on the cutter hub, the intensity of carbide chip also improves greatly, so it is easy to use to have drilling tool, wearability is good, the cutting edge strength height, and the blade of blade is difficult for characteristics such as tipping.
Description of drawings:
Fig. 1 is a carbide chip structural representation of the present utility model;
Fig. 2 is a carbide chip structural representation vertical view of the present utility model;
Fig. 3 is a carbide chip master chip breaking grooved A-A generalized section of the present utility model;
Fig. 4 is carbide chip sharp angle of the present invention and primary clearance schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
From accompanying drawing 1-5 as can be seen, the utility model is that drill insert is the indexable carbide chip that changes the outfit, and carbide chip is a laminated structure, and carbide chip is symmetrically distributed with the rotation of drilling tool rotary middle spindle 1 line; Carbide chip be symmetrically distributed to form two-sided main cutting edge according to pivot, and first main cutting edge 2 of two-sided main cutting edge and second main cutting edge 3 are arranged in opposite directions according to pivot; The sharp angle h of carbide chip is 118 °～135 °, and primary clearance f is 7 °～11 °, and front clearance d is 6 °～9 °; Has the curved face type end face chip-breaker 4 that caves inward by the carbide chip surface behind the main cutting edge of each main cutting edge of two-sided main cutting edge, the angle beta that chip-breaker 4 is caved inward by main cutting edge is 7 °～15 °, chip-breaker 4 formed disconnected bevels are the polygon inclined-plane, the back side 5 that goes out to cut of chip-breaker 4 is bottom 7 oblique layouts from sharp point top 6 to blade, and the oblique angle C that goes out to cut the back side 5 and rotary middle spindle 1 is 15 °-20 °; The angle α that goes out to cut the back side 5 and chip-breaker 4 polygon inclined-planes is 110 °～145 °, is beneficial to chip removal; Each main cutting edge one side symmetric arrangement at sharp angle and chisel edge place 7 has sharp angle chip-breaker 8, to reduce cutting resistance; Sharp angle chip-breaker 8 is oblique layouts; Carbide chip is a symmetry with the pivot axis, is distributed with two reverse counterbores 9 in first main cutting edge of two-sided main cutting edge part with the second main cutting edge part two sides; Have locating groove 10 in the bottom of carbide chip, carbide chip is inlaid in by locating groove 10 on the draw-in groove of tool bodies, is fixed on the cutter hub from the two sides with carbide chip respectively by securing member again, and it is firm to make it clamping.Thereby improve the durability and the production efficiency of blade, stabilised quality.
Claims (6)
1. Indexable hard alloy shallow hole drilling blade, it is characterized in that: drill insert is the indexable carbide chip that changes the outfit, and carbide chip is a laminated structure, is symmetrically distributed with the rotation of drilling tool rotation central axis; Carbide chip is symmetrically distributed according to pivot and forms two-sided main cutting edge, and first main cutting edge and second main cutting edge of two-sided main cutting edge are arranged in opposite directions according to pivot; Has the curved face type end face chip-breaker that caves inward by the carbide chip surface behind the main cutting edge of each main cutting edge of two-sided main cutting edge, the formed disconnected bevel of chip-breaker is the polygon inclined-plane, and the back side that goes out to cut of chip-breaker is the oblique layout in bottom from the sharp point top to blade.
2. Indexable hard alloy shallow hole drilling blade as claimed in claim 1 is characterized in that: the sharp angle of carbide chip is 118 °～135 °, and primary clearance is 7 °～11 °, and front clearance is 6 °～9 °.
3. Indexable hard alloy shallow hole drilling blade as claimed in claim 1 is characterized in that: each the main cutting edge one side symmetric arrangement at sharp angle and chisel edge place has the sharp angle chip-breaker; The sharp angle chip-breaker is oblique layout.
4. Indexable hard alloy shallow hole drilling blade as claimed in claim 1 is characterized in that: the angle that chip-breaker is caved inward by main cutting edge is 7 °～15 °, and the angle that goes out to cut the back side and chip-breaker polygon inclined-plane is 110 °～145 °.
5. Indexable hard alloy shallow hole drilling blade as claimed in claim 1, it is characterized in that: carbide chip is a symmetry with the pivot axis, is distributed with two reverse counterbores in first main cutting edge of two-sided main cutting edge part with the second main cutting edge part two sides.
6. Indexable hard alloy shallow hole drilling blade as claimed in claim 1, it is characterized in that: the bottom at carbide chip has locating groove, carbide chip is inlaid on the draw-in groove of tool bodies by locating groove, from the two sides carbide chip is fixed on the cutter hub respectively by securing member again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202415660U CN201862821U (en) | 2010-06-30 | 2010-06-30 | Cemented carbide shallow hole drilling blades capable of indexing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202415660U CN201862821U (en) | 2010-06-30 | 2010-06-30 | Cemented carbide shallow hole drilling blades capable of indexing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201862821U true CN201862821U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202415660U Expired - Lifetime CN201862821U (en) | 2010-06-30 | 2010-06-30 | Cemented carbide shallow hole drilling blades capable of indexing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201862821U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639245A (en) * | 2017-10-30 | 2018-01-30 | 舟山飞达工具有限公司 | A kind of multifunctional alloy blade |
| CN108637325A (en) * | 2018-07-20 | 2018-10-12 | 台州华达工量具制造有限公司 | A kind of interchangeable bit of S types spiral chit drill point |
| CN112045228A (en) * | 2020-07-30 | 2020-12-08 | 厦门金鹭特种合金有限公司 | Central drilling blade and drilling tool thereof |
-
2010
- 2010-06-30 CN CN2010202415660U patent/CN201862821U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639245A (en) * | 2017-10-30 | 2018-01-30 | 舟山飞达工具有限公司 | A kind of multifunctional alloy blade |
| CN108637325A (en) * | 2018-07-20 | 2018-10-12 | 台州华达工量具制造有限公司 | A kind of interchangeable bit of S types spiral chit drill point |
| CN112045228A (en) * | 2020-07-30 | 2020-12-08 | 厦门金鹭特种合金有限公司 | Central drilling blade and drilling tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 412000 Zhuzhou City, Hunan Province, No. two road, No. 68 Patentee after: Zhuzhou Huarui precision tool Limited by Share Ltd Address before: 412007 No. 209 the Yellow River South Road, Tianyuan District, Zhuzhou, Hunan. Patentee before: Zhuzhou Huarui Cemented Carbide Tool Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |