CN203390262U - Chamfering bit with locating column - Google Patents
Chamfering bit with locating column Download PDFInfo
- Publication number
- CN203390262U CN203390262U CN201320538583.4U CN201320538583U CN203390262U CN 203390262 U CN203390262 U CN 203390262U CN 201320538583 U CN201320538583 U CN 201320538583U CN 203390262 U CN203390262 U CN 203390262U
- Authority
- CN
- China
- Prior art keywords
- cutter
- blade
- locating column
- head location
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a chamfering bit with a locating column, relating to a chamfering bit. The chamfering bit solves the problem that the integral quality of a rotor impeller is influenced because the surface precision is lowered due to oscillation marks on the surface of a chamfer when the chamfer of an orifice of a locking hole of a steam turbine rotor impellor is processed in the prior art. The chamfer bit with the locating column comprises a cutter body and a cutter holder, which are sequentially arranged from left to right, wherein the axial line of the cutter body is coincident with the geometric center line of the cutter holder, and the cutter body and the cutter handle form a whole body. The chamfering bit further comprises the head locating column, the head locating column and the cutter body are sequentially arranged from left to right, the axial line of the head locating column is coincident with the axial line of the cutter body, the head locating column and the cutter body form a whole body, and a guide cone chamfer is arranged at the left end of the head locating column. The cutter body comprises a cutter rod, cutting blades and four cutter teeth, wherein the four cutter teeth are arranged on the cutter rod in an annular array manner, and one cutting blade is arranged on each cutter tooth. The chamfering bit is used for chamfering the orifice of the locking hole of the steam turbine rotor impeller.
Description
Technical field
The utility model relates to a kind of chmfer bit, is specifically related to a kind of chmfer bit with locating dowel.
Background technology
The locking hole aperture of impeller of steam turbine rotor is designed with 0.5 * 45 ° of chamfering, at present when this orifice chamfer of processing, first use Twist Drill, use again reamer Jiao Zhun hole, finally with the drill bit ream of 90 ° of sharp angles, go out 0.5 * 45 ° of chamfering, chamfer surface after processing has oscillation mark like this, has reduced surface accuracy, affects the total quality of impeller of rotor.
Utility model content
The utility model is when solving current technology processing vapor turbine wheel impeller lock tieholen orifice chamfer, and chamfer surface has oscillation mark, has reduced surface accuracy, affects the problem of impeller of rotor total quality, a kind of chmfer bit with locating dowel of proposition.
The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: a kind of chmfer bit with locating dowel, it comprises blade and handle of a knife, described blade and handle of a knife set gradually from left to right, and the axis of blade overlaps with the geometric center lines of handle of a knife, described blade and handle of a knife are made one, described chmfer bit also comprises head location post, the cross section of described head location post is circular, described head location post and blade set gradually from left to right, and the axis of head location post and the dead in line of blade, described head location post and blade are made one, the left end of described head location post is provided with leading cone chamfering, described blade comprises knife bar, cutting edge and four cutters tooth, described four cutters tooth are arranged on knife bar with annular array form, form four toothings, on described each cutter tooth, be provided with a cutting edge.
The beneficial effect that the utility model compared with prior art comprises is:
1. the utility model is on existing cutter basis, by setting up head location post, head location post is positioned in locking hole, handle of a knife is installed and is positioned on outside knife bar, realize handle of a knife and the two-way location of head location post, make drill bit more firm in the process of work, reduce the oscillation mark on chamfer machining surface, finished surface precision is Ra12.5, has guaranteed the total quality of impeller of rotor.
2. the utility model is simple in structure, is convenient to manufacture, with low cost.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model, and Fig. 2 is the left view of Fig. 1, and Fig. 3 is the cutaway view at A-A place in Fig. 1.
The specific embodiment
The specific embodiment one: present embodiment is described in conjunction with Fig. 1-Fig. 3, a kind of chmfer bit with locating dowel of present embodiment, it comprises blade 2 and handle of a knife 3, described blade 2 and handle of a knife 3 set gradually from left to right, and the axis of blade 2 overlaps with the geometric center lines of handle of a knife 3, described blade 2 and handle of a knife 3 are made one, described chmfer bit also comprises head location post 1, the cross section of described head location post 1 is circular, described head location post 1 and blade 2 set gradually from left to right, and the dead in line of the axis of head location post 1 and blade 2, described head location post 1 and blade 2 are made one, the left end of described head location post 1 is provided with leading cone chamfering 1-1, described blade 2 comprises knife bar 2-2, cutting edge 2-3 and four cutter tooth 2-1, described four cutter tooth 2-1 are arranged on knife bar 2-2 with annular array form, form four toothings, on described each cutter tooth 2-1, be provided with a cutting edge 2-3.
The specific embodiment two: in conjunction with Fig. 1, present embodiment is described, present embodiment head location post 1 is provided with technique undercut 1-2 with the intersection of blade 2.So arrange, make cutter energy complete by chamfer machining out.Other composition and connected mode are identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 1 and Fig. 3, present embodiment is described, in present embodiment, the cross section of chmfer bit handle of a knife 3 is square.So arrange, facilitate the installation location of handle of a knife and outside knife bar.Other composition and connected mode are identical with the specific embodiment one or two.
The specific embodiment four: in conjunction with Fig. 1 and Fig. 2, present embodiment is described, the leading cone chamfering 1-1 angle [alpha] of present embodiment chmfer bit head location post 1 is 15 ° and so arranges, is convenient to head location post 1 and introduces in locking hole smoothly.Other composition and connected mode are identical with the specific embodiment three.
Operation principle
First handle of a knife is fixedly mounted externally on knife bar, then head location post is positioned in locking hole, drill bit is realized two-way location by handle of a knife and head location post like this, start lathe, by the cutting edge arranging on blade, the locking hole vent surface of impeller of steam turbine rotor is carried out to the processing of chamfering.
Claims (4)
1. the chmfer bit with locating dowel, it comprises blade (2) and handle of a knife (3), described blade (2) and handle of a knife (3) set gradually from left to right, and the axis of blade (2) overlaps with the geometric center lines of handle of a knife (3), described blade (2) and handle of a knife (3) are made one, it is characterized in that: described chmfer bit also comprises head location post (1), the cross section of described head location post (1) is circular, described head location post (1) and blade (2) set gradually from left to right, and the dead in line of the axis of head location post (1) and blade (2), described head location post (1) and blade (2) are made one, the left end of described head location post (1) is provided with leading cone chamfering (1-1), described blade (2) comprises knife bar (2-2), cutting edge (2-3) and four cutters tooth (2-1), described four cutters tooth (2-1) are arranged on knife bar (2-2) with annular array form, form four toothings, on described each cutter tooth (2-1), be provided with a cutting edge (2-3).
2. a kind of chmfer bit with locating dowel according to claim 1, is characterized in that: described head location post (1) is provided with technique undercut (1-2) with the intersection of blade (2).
3. according to a kind of chmfer bit with locating dowel described in claim 1 or 2, it is characterized in that: the cross section of described chmfer bit handle of a knife (3) is square.
4. a kind of chmfer bit with locating dowel according to claim 1, is characterized in that: leading cone chamfering (1-1) angle [alpha] of described chmfer bit head location post (1) is 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538583.4U CN203390262U (en) | 2013-08-30 | 2013-08-30 | Chamfering bit with locating column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538583.4U CN203390262U (en) | 2013-08-30 | 2013-08-30 | Chamfering bit with locating column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203390262U true CN203390262U (en) | 2014-01-15 |
Family
ID=49901824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320538583.4U Expired - Lifetime CN203390262U (en) | 2013-08-30 | 2013-08-30 | Chamfering bit with locating column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203390262U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752928A (en) * | 2014-01-23 | 2014-04-30 | 哈尔滨飞机工业集团有限责任公司 | Round hole chamfer cutter |
| CN105598514A (en) * | 2016-03-16 | 2016-05-25 | 温岭市百邦电动工具配件厂(普通合伙) | Piston inner hole chamfering machine |
-
2013
- 2013-08-30 CN CN201320538583.4U patent/CN203390262U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752928A (en) * | 2014-01-23 | 2014-04-30 | 哈尔滨飞机工业集团有限责任公司 | Round hole chamfer cutter |
| CN105598514A (en) * | 2016-03-16 | 2016-05-25 | 温岭市百邦电动工具配件厂(普通合伙) | Piston inner hole chamfering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
|
| CX01 | Expiry of patent term |