CN201728398U - Indexable composite drill bit - Google Patents
Indexable composite drill bit Download PDFInfo
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- CN201728398U CN201728398U CN2010202698316U CN201020269831U CN201728398U CN 201728398 U CN201728398 U CN 201728398U CN 2010202698316 U CN2010202698316 U CN 2010202698316U CN 201020269831 U CN201020269831 U CN 201020269831U CN 201728398 U CN201728398 U CN 201728398U
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- drill bit
- drill
- indexable
- blade
- bit body
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Abstract
The utility model relates to an indexable hard alloy drill bit, in particular to an indexable composite drill bit matched with a numerical control machine to process large and deep apertures. The indexable composite drill bit includes a drill stem driven by the spindle of the machine, and a drill bit connected with the drill stem; a central drill is fixedly arranged in the middle of the body of the drill bit; a group of blades are fixedly arranged on the body of the drill bit; wherein the edges of the blades stretch out of the front surface of the body of the drill bit and are shorter than the distance of the central drill stretching out of the font surface of the body of the drill bit. The drilling depth of the indexable composite drill bit can be 8 times of a drilling diameter and the speed of the indexable composite drill bit is 5-7 times of a high speed steel drilling speed. As the blades are indexable, the utilization rate is high and the blades are convenient to be replaced; moreover, the overall efficiency of drilling is about 10 times of the using efficiency of a twist drill.
Description
Technical field
The utility model is the supporting usefulness of a kind of carbide drill, particularly Digit Control Machine Tool, processes big aperture, the indexable composite drill bit of deep hole warp.
Background technology
At present, the boring cutting is mainly with high speed steel twist drill processing, for the macropore processing of aperture more than 60-180mm, usually also adopt the method for repeatedly boring, expanding to finish with high speed steel twist drill, this processing mode efficient is low, integrated cost height, suitable single-piece work.The situation that has big metering-orifice to process on advanced Digit Control Machine Tool such as heavy-duty machinery, large-size machine, steam turbine, rail particularly, this is necessary to finish with advanced aperture knife tool.1996,12 phases of indexable formula drill bit " tool technique " of ISCARR.The indexable formula drill bit of ISCARR has adopted indexable triangular blade, and the aperture is 16-55mm, and maximum hole depth is 4 times of apertures.The Annular trepanning drill bit of Chinese patent 98200580.6, surface roughness can reach Ra6.3-3.2, and blade adopts outer cooling structure, and the Circularhole diameter that this drill bit can be processed is greater than 40mm, and working (machining) efficiency can improve 2-5 doubly than fluted drill.The problem that the rising prior art exists is that the processing aperture is less, and hole depth is more shallow, can not satisfy the requirement of Digit Control Machine Tool boring machining under many situations.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and the Circularhole diameter scope that provides a kind of drill bit to process is 20-300mm, and maximum hole depth is 8 times of apertures, and working (machining) efficiency can improve 10 times indexable composite drill bit than fluted drill.
Solution of the present utility model is: a kind of indexable composite drill bit, comprise the drilling rod that machine tool chief axis drives, the drill bit that links to each other with drilling rod, the bit body center fixed that is characterized in drill bit has centre drill, on bit body, be fixed with one group of blade, wherein the blade of blade stretches out the bit body front surface, and is shorter than the distance that centre drill stretches out the bit body front surface.
Its operation principle is: machine tool chief axis drives drilling rod and revolves axle at a high speed, drilling rod drives the drill bit rotation, do the feed motion of moving simultaneously to workpiece, centre drill is worked earlier, get out centre bore, and then the blade on centre drill both sides is participated in cutting movement, and the bottom outlet that centre bore is got out expands bit diameter to.Because the centre drill location is arranged, and working angles is steady, drilling depth can reach 8 times of bore diameter.Adopted carbide chip simultaneously, cutting speed is improved, and is 5-7 times of high-speed steel penetration rate.In addition, because blade is indexable, the utilization rate height, it is convenient to change, and the gross efficiency of boring is about 10 times of service efficiency of fluted drill.
Can adopt one group of blade to be separately fixed on two faces of bit body in the solution of the present utility model, blade is in alignment.Its effect is one group of blade when being fixed on face of bit body, and every blade is arranged in order, and the space is then arranged between the blade, can not cut processed object fully, has the surplus that is not switched to.If there is not the space between the blade, then blade is with overlapping, and influence boring is cut.This group blade is separately fixed on two faces of bit body, then can overcome the problems referred to above.
Blade is fixed on the bit body by edge bearing.When blade is broken in working angles, generally only be inconjunction with and break edge bearing, and be unlikely to damage bit body, can use again behind corresponding replacing edge bearing and the blade, thus the service efficiency of raising drill bit.
Be screwed centre drill on the bit body centre bore in the solution of the present utility model, centre drill can be done axial adjustment by the centre drill adjustment screw.
Can be fixed with the carbide alloy guide head in the bit body side in the solution of the present utility model.Its objective is that guide head with the hole wall guiding that drill bit gets out, prevents the drill bit swing,, make working angles steady with the dual location of centre drill.
Can adopt drilling rod to be provided with water feed apparatus in the solution of the present utility model, the water inlet tap of water feed apparatus is fixed on the air ring by screw thread, sealing ring is embedded in the air ring two ends, be enclosed within on the drilling rod, the sealing ring two ends are back-up rings, and outermost end is a jump ring, are stuck in the cannelure on the drilling rod, the water channel of water inlet tap reaches centre drill and bit body apopore by air ring passage, drilling rod center passage, methods for cooling in forming.Cooling fluid enters the cooling hole at drilling rod center by water inlet tap, air ring, and the apopore from centre drill and bit body flows out again, and blade and centre drill cool off, and simultaneously iron filings are taken out of.Advantage of the present utility model:
(1), be suitable for high-speed cutting, during the processing steel part, cutting speed can reach 80-120m/min, when using coated chip, cutting speed can reach 300m/min.
(2), once finish large diameter hole processing on solid material, reduce operation, production efficiency is 5-7 times of common fluted drill.
(3), the indexable use of blade, save non-cutting time and cost.
(4), hole depth can not only hole less than 4 times drill bit with the ratio in aperture, also can be used for operations such as bore hole, spot-facing.
(5), the dimensional accuracy of machining hole can reach IT10-IT12, the roughness Ra of finished surface is 6.3-3.2um..
(6), chip breaking is good, with the blade chip breaking of band chip-breaker, smear metal is easily got rid of.
(7), in the drilling process, stable cutting is felt relieved, friction.
(8), the bore diameter scope is 20-180mm, maximum drilling diameter can reach 300mm during the enough and good rigidly of machine power.
(9), drilling depth, shallow hole drilling be the aperture 2-4 doubly, compound brill be the aperture 6-8 doubly.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the drill bit stereogram.
The specific embodiment
The utility model embodiment as Fig. 1, Fig. 2, shown in, indexable composite drill bit comprises the drilling rod 10 that machine tool chief axis drives, by the drill bit 1 that spacer shell 3 links to each other with drilling rod 10, in the middle of the bit body 9 of drill bit 1 centre bore is arranged, centre drill 2 is fixed in the centre bore by screw 5; One group of blade 4 is fixed on 9 two faces of bit body by edge bearing 6 usefulness blade screws 7 respectively, and the blade of blade 4 is in alignment; Be fixed with carbide alloy guide head 8 in bit body 9 sides; Drilling rod 10 is provided with water feed apparatus, the water inlet tap 13 of water feed apparatus is fixed on the air ring 14 by screw thread, sealing ring 15 is embedded in air ring 14 two ends, be enclosed within on the drilling rod 10, sealing ring 15 two ends are back-up rings 12, and outermost end is a jump ring 11, and jump ring 11 is stuck in the cannelure on the drilling rod 10, the water channel of water inlet tap is by the apopore 16 of air ring 14 passages, drilling rod 10 center passages arrival centre drills 2 and bit body 9, methods for cooling in forming.Wherein 3 of spacer shells transmit moment of torsion and overload protective function.
Claims (6)
1. indexable composite drill bit, comprise the drilling rod (10) that machine tool chief axis drives, the drill bit (1) that links to each other with drilling rod (10), bit body (9) center fixed that it is characterized in that drill bit (1) has centre drill (2), on bit body (9), be fixed with one group of blade (4), wherein the blade of blade (4) stretches out bit body (9) front surface, and is shorter than the distance that centre drill (2) stretches out bit body (9) front surface.
2. indexable composite drill bit according to claim 1 is characterized in that one group of blade (4) is separately fixed on (9) two faces of bit body, and blade is in alignment.
3. indexable composite drill bit according to claim 1 and 2 is characterized in that blade (4) is fixed on the bit body (9) by edge bearing (6).
4. indexable compound brill according to claim 1 is characterized by on bit body (9) centre bore and is screwed centre drill (2), and centre drill (2) can be done axial adjustment by centre drill (2) adjustment screw (5).
5. indexable composite drill bit according to claim 1 is characterized in that being fixed with carbide alloy guide head (8) on bit body (9) side.
6. indexable composite drill bit according to claim 1, it is characterized in that drilling rod (10) is provided with water feed apparatus, the water inlet tap of water feed apparatus (13) is fixed on the air ring (14) by screw thread, sealing ring (15) is embedded in air ring (14) two ends, be enclosed within on the drilling rod (10), sealing ring (15) two ends are back-up ring (12), outermost end is jump ring (11), be stuck in the cannelure on the drilling rod (10), the water channel of water inlet tap (13) arrives the apopore (16) of centre drill (2) and bit body (9) by air ring (14) passage, drilling rod (10) center passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202698316U CN201728398U (en) | 2010-07-23 | 2010-07-23 | Indexable composite drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202698316U CN201728398U (en) | 2010-07-23 | 2010-07-23 | Indexable composite drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201728398U true CN201728398U (en) | 2011-02-02 |
Family
ID=43519556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202698316U Expired - Fee Related CN201728398U (en) | 2010-07-23 | 2010-07-23 | Indexable composite drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201728398U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335835A (en) * | 2011-07-15 | 2012-02-01 | 天津市宝涞精密机械有限公司 | System for supplying cooling liquid of cooling tool in multi-shaft gear box |
| CN103752885A (en) * | 2014-01-24 | 2014-04-30 | 山东青能动力股份有限公司 | Combination drill of drilling machine |
| CN108927555A (en) * | 2018-09-11 | 2018-12-04 | 浙江甬岭数控刀具有限公司 | Indexable depth drill |
| CN109158666A (en) * | 2018-09-14 | 2019-01-08 | 惠尔信机械（泰兴）有限公司 | Gang tool and the technique that slender holes are processed using it |
| CN110586992A (en) * | 2019-10-23 | 2019-12-20 | 浙江甬岭数控刀具有限公司 | Indexable large-diameter centering drill with internal cooling |
| CN112935313A (en) * | 2021-04-01 | 2021-06-11 | 宁波恺露重型锻造有限公司 | Horizontal punching device |
-
2010
- 2010-07-23 CN CN2010202698316U patent/CN201728398U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335835A (en) * | 2011-07-15 | 2012-02-01 | 天津市宝涞精密机械有限公司 | System for supplying cooling liquid of cooling tool in multi-shaft gear box |
| CN103752885A (en) * | 2014-01-24 | 2014-04-30 | 山东青能动力股份有限公司 | Combination drill of drilling machine |
| CN108927555A (en) * | 2018-09-11 | 2018-12-04 | 浙江甬岭数控刀具有限公司 | Indexable depth drill |
| CN109158666A (en) * | 2018-09-14 | 2019-01-08 | 惠尔信机械（泰兴）有限公司 | Gang tool and the technique that slender holes are processed using it |
| CN109158666B (en) * | 2018-09-14 | 2021-06-01 | 惠尔信机械（泰兴）有限公司 | Combined cutter and process for machining long pore by using same |
| CN110586992A (en) * | 2019-10-23 | 2019-12-20 | 浙江甬岭数控刀具有限公司 | Indexable large-diameter centering drill with internal cooling |
| CN112935313A (en) * | 2021-04-01 | 2021-06-11 | 宁波恺露重型锻造有限公司 | Horizontal punching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20160723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |