CN107363302A - The indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe - Google Patents
The indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe Download PDFInfo
- Publication number
- CN107363302A CN107363302A CN201710775591.3A CN201710775591A CN107363302A CN 107363302 A CN107363302 A CN 107363302A CN 201710775591 A CN201710775591 A CN 201710775591A CN 107363302 A CN107363302 A CN 107363302A
- Authority
- CN
- China
- Prior art keywords
- cutter hub
- knife
- handle
- indexable
- drill bit
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
Abstract
The present invention relates to a kind of indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe, it is the handle of a knife of column structure and cylinder with part hollow structure with global shape, and there is the cutter hub of one or several spiral shape chip areas at least a portion length, the handle of a knife and cutter hub are that metal material is made, the handle of a knife is lengthening handle of a knife, for being clamped on the indexable knife rest of numerical control screw thread lathe by chuck, the cutter hub is connected to one end of handle of a knife, the diameter of cutter hub uses conical design decrescence from coarse to fine, to realize in pipe end API SPEC 5DP requirements seamlessly transitting for reamer shape in hole forming Miu, the end of cutter hub is handled by thickening, and it is arranged with the blade for cutting in the both sides of cutter hub end.The drill bit can be used for machining small footpath endoporus, effectively reduce feed number, solves the transition of reamer shape in hole forming Miu in pipe end API SPEC 5DP requirements, reduces stress concentration, improves interior also Forming Quality, drastically increase production efficiency.
Description
Technical field
The invention belongs to aperture manufacture field, and in particular to a kind of indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe.
Background technology
The strength member that drilling rod is petroleum drilling and mining and geological prospecting enterprises largely use.In drilling process, with drill bit
Deeply need gradually increase drilling rod.Car has internal and external screw thread to two ends of drill respectively, by both ends internal and external screw thread connect by branch,
Therefore whole drilling rod is made up of body and nipple, coupling three parts.With modern oil well and the deep-well of well, underground is made
The deterioration of industry environment and the increase of drilling rod weight itself, it is strong to the connection between drilling rod between drill pipe body and tool joint
Degree requires also constantly increase, actually and constantly requires drilling rod intensity enhancing.And strengthen the bonding strength of drill rod pipe end, can
Pass through following several approach：
A. suitably increase the sectional area of pipe end connecting portion, that is, increase pipe end wall thickness；
B. from high-strength or super Materials with High Strength；
C. the sectional area of pipe end connecting portion is increased simultaneously and from high-strength or super Materials with High Strength.
And it is that end upsetting is generally to use method at present to select the first cross-sectional area for increasing pipe end connecting portion
One of.End upsetting is that high strength steel tube end is carried out into local heating deformation, makes internal diameter, external diameter that a certain degree of change occur
Become, reach end wall thickness increase, to strengthen its bonding strength.Three kinds of end upsetting mode point, i.e., in thickening, external upset (EU) and interior
External upset (EU).With the increasingly maturation of process for upsetting, thicken than improving constantly.Pipe end has been thickeied after Overheating Treatment, carries out pipe end
Inside and outside round turning, scale removal and tiny thicken produce the surface defects such as fold.Pipe end endoporus machining process is commonly used
Inner hole boring tool carries out the cutting process of metal material.And the limitation of this kind of method is small-bore endoporus cutting.Small-bore endoporus
Boring cutter has that cutting data is small, and cutting speed is low, and hole size is by knife, therefore the increase of feed number, has a strong impact on production efficiency.
The content of the invention
The technical problems to be solved by the invention are to overcome deficiency of the prior art, there is provided a kind of numerically controlled lathe is indexable
The U-shaped drill bit of knife rest pinhole type, the drill bit can be used for machining small footpath endoporus, effectively reduce feed number, solve pipe end
In API SPEC 5DP requirements in hole forming Miu reamer shape transition, reduce stress concentration, improve in also Forming Quality,
Drastically increase production efficiency.
Technical scheme：A kind of indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe, it is with global shape
Column structure and cylinder, which have on the handle of a knife of part hollow structure, and at least a portion length, has one or several spiral shapes to arrange
Consider the cutter hub of groove to be worth doing, the handle of a knife and cutter hub are that metal material is made, and the handle of a knife is lengthens handle of a knife, in numerical control screw thread car
Clamped on the indexable knife rest of bed by chuck, the cutter hub is connected to one end of handle of a knife, the diameter of cutter hub use by slightly to
Carefully conical design decrescence, to realize in pipe end API SPEC 5DP requirements seamlessly transitting for reamer shape in hole forming Miu, knife
The end of body is handled by thickening, and is arranged with the blade for cutting in the both sides of cutter hub end.
Further, the diameter of the cutter hub uses conical design decrescence from coarse to fine, and the taper of cutter hub is 10 30
Degree.
Further, the cutter hub is provided with two helical flutes being recessed along cutter hub.
Further, the handle of a knife is column structure, and part is hollow, and the length of handle of a knife is 165mm.
Further, the cutter hub is diameter entity cone structure from coarse to fine, and the length of cutter hub is 235mm.
The present invention has the advantages that compared with prior art：
1st, the present invention is simple in construction, using handle of a knife is lengthened, realizes and is carried out on the indexable knife rest of numerical control screw thread lathe by chuck
Clamping, adds cutter holding stability.
2nd, the end of cutter hub is handled by thickening, and is arranged with cutting tip in the both sides of cutter hub end so that pipe end
Thicken endoporus and thicken size uniform, dimensional uniformity is good, solve because clamping deviation causes tube end maching surplus uneven and
Knife bar is caused to vibrate, two side blades participate in cutting simultaneously had both increased cutter stability, while reduced cutting force, and then ensured and prolong
Numerically-controlled machine tool rest service life is grown.
3 cutter hub diameters use design decrescence from coarse to fine, mainly solve hole forming in pipe end API SPEC 5DP requirements
The transition of reamer shape in Miu, controlled by programming of NC-Lathe and trim Miu transitions smooths.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the use state figure of the present invention.
In figure：1- three-jaw chucks, 2- workpiece, 3-U type drill bits, 4- numerically-controlled invertible knife rests, 5- boring cutter jackets, 6- handle of a knifes,
7- cutter hubs, 8- blades, 9- chip areas.
Embodiment
With reference to Figure of description, the present invention is further illustrated, so that those skilled in the art can be preferably
Understand technical scheme.
A kind of indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe, as shown in figure 1, the drill bit has global shape
There is the handle of a knife 6 of part hollow structure for column structure and cylinder, and there are one or several spirals at least a portion length
The cutter hub 7 of shape chip area, the handle of a knife 6 and cutter hub 7 are that metal material is made.For the handle of a knife to lengthen handle of a knife, it is post
Body structure, and part is hollow, the length of handle of a knife is 165mm, for passing through chuck on the indexable knife rest of numerical control screw thread lathe
Clamped, to increase cutter holding stability.The cutter hub 7 is connected to one end of handle of a knife 6, and the diameter of cutter hub 7 is used by thick
To conical design carefully decrescence, the taper of cutter hub is 10 30 degree, to realize hole forming Miu in pipe end API SPEC 5DP requirements
Interior reamer shape seamlessly transits, and during processing, is controlled by programming of NC-Lathe and trims Miu transitions smooths.It is and traditional U-shaped
Bore, can only the consistent size of drill diameter endoporus.The end of cutter hub 7 is handled by thickening, and symmetrical in the both sides of the end of cutter hub 7
Provided with the blade 8 for cutting.Blade 8 is symmetrical arranged, and effect is that end upsetting endoporus thickens size uniform, dimensional uniformity
Good, to solve to cause knife bar to vibrate because clamping deviation causes tube end maching surplus uneven, two side blades are participated in and cut simultaneously
Cutting increases cutter stability and reduces cutting force, so as to ensure and extend numerically-controlled machine tool rest service life.And traditional processing
Center bores center insert with U and is only available for drilling reality core material, and for the hollow product of endoporus, traditional U-shaped drill blade is made without cutting
With.The cutter hub is diameter entity cone structure from coarse to fine, and the length of cutter hub is 235mm.Two edges are provided with cutter hub
The helical flute of cutter hub depression, for cutting swarf to be discharged.
In use, as shown in Fig. 2, by the clamping of workpiece 2 on the three-jaw chuck 1 of Digit Control Machine Tool, with boring cutter jacket 5 in number
Control and adjust lathe center on indexable knife rest 4（Adjusted by pad）, chuck 5 is compressed, U-shaped drill bit 3 is inserted into the hole of chuck 5
It is interior, drill bit is adjusted according to pipe end endoporus turning length to be processed and stretches out chuck length, cutting process is write, to knife and cuts
Cut.
Above-described embodiment is only used for skilled artisan understands that technical scheme, and is not that it is limited
System, all any modification, improvement or equivalent substitutions made within technical solution of the present invention, it should be included in the protection of the present invention
Within the scope of.
Claims (5)
- It is column structure and cylinder with part with global shape 1. the indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe Have the cutter hub of one or several spiral shape chip areas on the handle of a knife of hollow structure, and at least a portion length, the handle of a knife and Cutter hub is that metal material is made, it is characterized in that the handle of a knife is lengthening handle of a knife, in the indexable knife rest of numerical control screw thread lathe Upper to be clamped by chuck, the cutter hub is connected to one end of handle of a knife, and the diameter of cutter hub uses taper decrescence from coarse to fine Design, to realize in pipe end API SPEC 5DP requirements seamlessly transitting for reamer shape in hole forming Miu, the end of cutter hub passes through Thickening is handled, and is arranged with the blade for cutting in the both sides of cutter hub end.
- 2. the indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe according to claim 1, it is characterized in that：The cutter hub Diameter use conical design decrescence from coarse to fine, the taper of cutter hub is 10 30 degree.
- 3. the indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe according to claim 1, it is characterized in that：The cutter hub It is provided with two helical flutes being recessed along cutter hub.
- 4. the indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe according to claim 1, it is characterized in that：The handle of a knife For column structure, and part is hollow, and the length of handle of a knife is 165mm.
- 5. the indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe according to claim 1, it is characterized in that：The cutter hub For diameter entity cone structure from coarse to fine, the length of cutter hub is 235mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775591.3A CN107363302A (en) | 2017-08-31 | 2017-08-31 | The indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775591.3A CN107363302A (en) | 2017-08-31 | 2017-08-31 | The indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107363302A true CN107363302A (en) | 2017-11-21 |
Family
ID=60312106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710775591.3A Pending CN107363302A (en) | 2017-08-31 | 2017-08-31 | The indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815714U (en) * | 2010-09-28 | 2011-05-04 | 中国一拖集团有限公司 | Quick change chuck structure with quick change drill bush |
| CN102126038A (en) * | 2011-04-07 | 2011-07-20 | 许进 | Cone angle drill |
| CN203621577U (en) * | 2013-10-09 | 2014-06-04 | 强胜精密机械(苏州)有限公司 | Drilling tool |
| CN104107941A (en) * | 2014-06-20 | 2014-10-22 | 杭州浙锚预应力有限公司 | Integrated drill reamer |
| CN103157835B (en) * | 2013-03-28 | 2016-02-10 | 苏州阿诺精密切削技术股份有限公司 | For the taper hole drilling reamer of plate parts processing |
| CN207414433U (en) * | 2017-08-31 | 2018-05-29 | 山西风雷钻具有限公司 | The indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe |
-
2017
- 2017-08-31 CN CN201710775591.3A patent/CN107363302A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815714U (en) * | 2010-09-28 | 2011-05-04 | 中国一拖集团有限公司 | Quick change chuck structure with quick change drill bush |
| CN102126038A (en) * | 2011-04-07 | 2011-07-20 | 许进 | Cone angle drill |
| CN103157835B (en) * | 2013-03-28 | 2016-02-10 | 苏州阿诺精密切削技术股份有限公司 | For the taper hole drilling reamer of plate parts processing |
| CN203621577U (en) * | 2013-10-09 | 2014-06-04 | 强胜精密机械(苏州)有限公司 | Drilling tool |
| CN104107941A (en) * | 2014-06-20 | 2014-10-22 | 杭州浙锚预应力有限公司 | Integrated drill reamer |
| CN207414433U (en) * | 2017-08-31 | 2018-05-29 | 山西风雷钻具有限公司 | The indexable U-shaped drill bit of knife rest pinhole type of numerically controlled lathe |
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Application publication date: 20171121 |