CN101879620A - Indexable hard alloy shallow hole drilling method and drilling blade - Google Patents
Indexable hard alloy shallow hole drilling method and drilling blade Download PDFInfo
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- CN101879620A CN101879620A CN 201010212619 CN201010212619A CN101879620A CN 101879620 A CN101879620 A CN 101879620A CN 201010212619 CN201010212619 CN 201010212619 CN 201010212619 A CN201010212619 A CN 201010212619A CN 101879620 A CN101879620 A CN 101879620A
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Abstract
The invention relates to an indexable hard alloy shallow hole drilling method and a drilling blade. A combined-type drilling tool is used for drilling holes. A hard alloy blade is positioned through a groove and is installed on a cutter body through a tightening device to form a combined-type hard alloy drilling tool which is used for drilling holes. The combined-type hard alloy drilling tool is combined by the cutter body and the hard alloy blade, wherein the hard alloy blade is clamped on the cutter body and is fixed on the cutter body by the tightening device. The hard alloy blade is an integral indexable replaceable blade, is a flaky structure and is rotatably and symmetrically distributed by taking the rotating central axis of the drilling tool as a symmetrical line. Two reverse counter bores are symmetrically distributed on the two surfaces of the hard alloy blade by taking the rotating central axis as a symmetrical line. The front end part of the cutter body is provided with a through groove. The hard alloy blade is installed in the through hole of the cutter body and is fixed on the cutter by using tightening screws which penetrate through the counter bores of the blade. End holes of rails are machined through the integral hard alloy blade embedded into the front end part of the cutter body.
Description
Technical field
The present invention relates to a kind of drilling method and blade, refer in particular to a kind of method and drill insert with carbide chip processing shallow bore hole.
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 present invention have certain relation by preliminary search:
1, number of patent application is CN200780036058.X, denomination of invention is " being used to improve the method for fracture toughness of marginal layer of 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 invention is characterized in the combination of following various method steps: 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, denomination of invention is " 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.
Summary of the invention
Purpose of the present invention 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, special-purpose shallow bore hole boring method of more wear-resisting novel rail and drilling tool.This kind boring method 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 solution adopted for the present invention to solve the technical problems is: a kind of Indexable hard alloy shallow hole drilling method, take combined drilling tool boring, carbide chip is passed through the groove locate mode, be installed on the cutter hub by fastener, constitute the combined type carbide drill, hole with knockdown carbide drill again.Described combined type carbide drill is combined to form by cutter hub and carbide chip two parts, and carbide chip is to be stuck on the cutter hub by draw-in groove, is fixed on the cutter hub by fastener again.Described carbide chip is the indexable blade that changes the outfit, and carbide chip is a laminated structure, is symmetrically distributed with the rotation of drilling tool rotation central axis, and carbide chip is distributed with two reverse counterbores with the pivot axis on the two sides of blade; Described cutter hub is that leading section has groove, groove is slit into two round segmental part branches with the cutter hub fore-end, and round segmental part branch 1/2nd (hemicycle lacks part) of having an appointment, pruned, on dividing, remaining round segmental part is provided with the fixing threaded hole that matches with carbide chip, carbide chip is installed in the groove of cutter hub and by trip bolt and passes the blade counterbore, is fixed on the cutter hub.
In addition, have locating groove in the bottom of carbide chip, 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.Be symmetrically distributed with two-sided main cutting edge according to pivot on carbide chip, two-sided main cutting edge place has compound profile chip-breaker type, is beneficial to chip removal, and at sharp angle and chisel edge place symmetric design chip-breaker is arranged, to reduce cutting resistance.Thereby improve the durability and the production efficiency of blade, stabilised quality.
According to a kind of Indexable hard alloy shallow hole drilling blade that said method proposed, 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 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; 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 invention has the beneficial effects as follows: the end of rail shallow bore hole is processed by clamped combination carbide drill, 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 the overall structure schematic diagram of drilling tool of the present invention;
Fig. 2 is the structure of the cutter body schematic diagram of drilling tool of the present invention;
Fig. 3 is the structure of the cutter body end view of drilling tool of the present invention;
Fig. 4 is a carbide chip structural representation of the present invention;
Fig. 5 is a carbide chip structural representation vertical view of the present invention;
Fig. 6 is a carbide chip master chip breaking grooved A-A generalized section of the present invention;
Fig. 7 is carbide chip sharp angle of the present invention and primary clearance schematic diagram.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
From accompanying drawing 1-3 as can be seen, the present invention is a kind of Indexable hard alloy shallow hole drilling method, it relates to the stomidium processing mode on a kind of rail, take combined drilling tool boring, carbide chip 13 is passed through the groove locate mode, be installed on the cutter hub 12 by fastener 11, constitute the combined type carbide drill, hole with knockdown carbide drill again.Described combined type carbide drill is combined to form by cutter hub 12 and carbide chip 13 two parts, and carbide chip 13 is to be stuck on the cutter hub 12 by draw-in groove 14, is fixed on the cutter hub 12 by fastener 11 again.Described carbide chip 13 is the indexable blade that changes the outfit of monoblock type, carbide chip 13 is a laminated structure, be symmetrically distributed with 1 rotation of drilling tool rotation central axis, carbide chip 13 is distributed with two reverse counterbores with pivot axis 1 on the two sides of blade; Described cutter hub 12 has groove 15 for leading section, groove 15 is divided into two round segmental part branches with cutter hub 12 leading sections 16, and round segmental part divides 17 to have an appointment and 1/2nd pruned, on dividing, remaining round segmental part is provided with the fixing threaded hole 18 that matches with carbide chip, carbide chip is installed in the groove of cutter hub 12 and by fastener 11 and passes the blade counterbore, be fixed on the cutter hub 12, be inlaid in the stomidium on the whole hard alloy blade processing rail of cutter hub 12 leading sections by band.
In addition, have locating groove 14 in the bottom of carbide chip 13, carbide chip is inlaid in by locating groove 14 on the projection of cutter hub 12 grooves 15, is fixed on the cutter hub from the two sides with carbide chip respectively by fastener 11 again, and it is firm to make it clamping.On carbide chip 13, be symmetrically distributed with two-sided main cutting edge according to pivot, two-sided main cutting edge place has the curved face type end face chip-breaker 4 that is caved inward by the carbide chip surface, be beneficial to chip removal, and sharp angle chip-breaker 8 is arranged at sharp angle and chisel edge place symmetric arrangement, to reduce cutting resistance, sharp angle chip-breaker 8 is oblique layouts; Stomidium on the drilling tool processing rail of the carbide chip by band chip breaking grooved and sharp angle chip-breaker, thus the durability and the production efficiency of blade improved, stabilised quality.
According to a kind of Indexable hard alloy shallow hole drilling blade that said method proposed, structure such as accompanying drawing 4 are to shown in Figure 6, 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 (9)
1. Indexable hard alloy shallow hole drilling method, it is characterized in that: take combined drilling tool boring, carbide chip by the groove locate mode, is installed on the cutter hub by fastener, constitute the combined type carbide drill, hole with knockdown carbide drill again.
2. Indexable hard alloy shallow hole drilling method as claimed in claim 1, it is characterized in that: described combined type carbide drill is combined to form by cutter hub and carbide chip two parts, and carbide chip is to be stuck on the cutter hub by draw-in groove, is fixed on the cutter hub by fastener again; Described carbide chip is the indexable blade that changes the outfit of monoblock type, and carbide chip is a laminated structure, is symmetrically distributed with the rotation of drilling tool rotation central axis, and carbide chip is distributed with two reverse counterbores with the pivot axis on the two sides of blade; Described cutter hub is that leading section has groove, groove is slit into two round segmental part branches with the cutter hub fore-end, and the round segmental part branch is had an appointment and 1/2nd is pruned, on dividing, remaining round segmental part is provided with the fixing threaded hole that matches with carbide chip, carbide chip is installed in the groove of cutter hub and by trip bolt and passes the blade counterbore, be fixed on the cutter hub, be inlaid in the stomidium on the whole hard alloy blade processing rail of cutter hub leading section by band.
3. Indexable hard alloy shallow hole drilling method as claimed in claim 1 or 2, 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, be fixed on the cutter hub from the two sides with carbide chip respectively by securing member, it is firm to make it clamping again; Be symmetrically distributed with two-sided main cutting edge according to pivot on carbide chip, two-sided main cutting edge place has the curved face type end face chip-breaker that is caved inward by the carbide chip surface, and at sharp angle and chisel edge place symmetric arrangement the sharp angle chip-breaker is arranged; Stomidium on the drilling tool processing rail of the carbide chip by band chip breaking grooved and sharp angle chip-breaker.
4. 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.
5. 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 °.
6. 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.
7. Indexable hard alloy shallow hole drilling blade as claimed in claim 1, it is characterized in that: the angle that chip-breaker is caved inward by main cutting edge is 7 °～15 °, the oblique angle that goes out to cut the back side and rotary middle spindle is 10 °～20 °, and the angle that goes out to cut the back side and chip-breaker polygon inclined-plane is 110 °～145 °.
8. 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.
9. 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 |
|---|---|---|---|
| CN 201010212619 CN101879620A (en) | 2010-06-30 | 2010-06-30 | Indexable hard alloy shallow hole drilling method and drilling blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010212619 CN101879620A (en) | 2010-06-30 | 2010-06-30 | Indexable hard alloy shallow hole drilling method and drilling blade |
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| CN101879620A true CN101879620A (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010212619 Pending CN101879620A (en) | 2010-06-30 | 2010-06-30 | Indexable hard alloy shallow hole drilling method and drilling blade |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222845A (en) * | 2018-04-09 | 2018-06-29 | 成都百施特金刚石钻头有限公司 | The cyclic annular cutting alloy tooth of drill and petroleum extraction tools |
| CN109808384A (en) * | 2019-02-25 | 2019-05-28 | 蔡婕 | A kind of durable and efficient electro-motion pencil sharpener blade |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1562229A (en) * | 1975-12-12 | 1980-03-05 | Walter Gmbh Montanwerke | Cutting drill |
| US4642001A (en) * | 1983-10-31 | 1987-02-10 | Gill Geoffrey Y | Spade drill with replaceable cutting-insert carrier |
| CN2037278U (en) * | 1988-09-23 | 1989-05-10 | 哈尔滨第二工具厂 | Dual blade rotary centre flat-inlaid compound bit |
| US5957635A (en) * | 1998-08-21 | 1999-09-28 | Allied Machine & Engineering Corp. | Drill tool assembly |
| CN101547763A (en) * | 2006-12-25 | 2009-09-30 | 住友电工硬质合金株式会社 | Throw-away drill and tip arrangement method for the drill |
-
2010
- 2010-06-30 CN CN 201010212619 patent/CN101879620A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1562229A (en) * | 1975-12-12 | 1980-03-05 | Walter Gmbh Montanwerke | Cutting drill |
| US4642001A (en) * | 1983-10-31 | 1987-02-10 | Gill Geoffrey Y | Spade drill with replaceable cutting-insert carrier |
| CN2037278U (en) * | 1988-09-23 | 1989-05-10 | 哈尔滨第二工具厂 | Dual blade rotary centre flat-inlaid compound bit |
| US5957635A (en) * | 1998-08-21 | 1999-09-28 | Allied Machine & Engineering Corp. | Drill tool assembly |
| CN101547763A (en) * | 2006-12-25 | 2009-09-30 | 住友电工硬质合金株式会社 | Throw-away drill and tip arrangement method for the drill |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222845A (en) * | 2018-04-09 | 2018-06-29 | 成都百施特金刚石钻头有限公司 | The cyclic annular cutting alloy tooth of drill and petroleum extraction tools |
| CN108222845B (en) * | 2018-04-09 | 2024-04-26 | 成都百施特金刚石钻头有限公司 | Annular cutting alloy tooth for drilling and production tool |
| CN109808384A (en) * | 2019-02-25 | 2019-05-28 | 蔡婕 | A kind of durable and efficient electro-motion pencil sharpener blade |
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Application publication date: 20101110 |