CN106392116A - Drill bit clamping mechanism of deflected drill - Google Patents
Drill bit clamping mechanism of deflected drill Download PDFInfo
- Publication number
- CN106392116A CN106392116A CN201610801868.0A CN201610801868A CN106392116A CN 106392116 A CN106392116 A CN 106392116A CN 201610801868 A CN201610801868 A CN 201610801868A CN 106392116 A CN106392116 A CN 106392116A
- Authority
- CN
- China
- Prior art keywords
- installing hole
- drill
- drill bit
- locking
- spiral plunger
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
Abstract
The invention discloses a drill bit clamping mechanism of a deflected drill. The drill bit clamping mechanism comprises a rotary shaft, a spring collet and a spiral plunger, wherein the spring collet comprises an annular barrel body; a plurality of locking gaps are formed in the barrel body along the axis of the barrel body; the locking gaps are annularly and uniformly arranged around the barrel body; a front conical surface and a rear conical surface are arranged at the two ends of the barrel body respectively; and the radiuses of both of the front conical surface and the rear conical surface are gradually reduced from the middle to the two ends, and a clamping groove is arranged between the front conical surface and the rear conical surface. According to the drill bit clamping mechanism disclosed by the invention, the plurality of locking gaps are arranged in the spring collet, the spring collet generates plastic deformation during use, is capable of effectively locking a drill bit, and has a high locking force and large locking size; and the drill bit cannot swing or play under the action of the spring collet during drilling, and is capable of drilling a hole body with high accuracy.
Description
Technical field
The present invention relates to steam turbine technology field, relate generally to a kind of Deflection drill drill bit clamping device.
Background technology
In the assembling process of steam turbine rotor vane, last blade (last years) of every one stage impeller is in assembling
When, need to process locking pin-and-hole at blade root, because impeller spacing at different levels very narrow it is necessary to be folded to carrying out using special plus
Work.But existing Deflection drill is less to the enclasping force of drill bit and unstable in boring procedure, and drill bit is normal in the course of the work
Swing and play phenomenon occur, and then leads to the error in hole processing larger, had a strong impact on the assembling quality of blade
With assembling progress.
Content of the invention
The technical problem to be solved in the present invention is：There is provided a kind of structure simple, easy to use, and drill bit is had preferably
The Deflection drill drill bit clamping device of gripping performance.
In order to solve above-mentioned technical problem, the technical scheme is that：
A kind of Deflection drill drill bit clamping device, including rotating shaft, collet and spiral plunger, described collet includes ring
The cylinder of shape, described cylinder has several locking seams along its axis, and described locking seam is uniformly arranged around cylinder annular, institute
The two ends stating cylinder are respectively arranged with inner cone and rear cone, the radius of described inner cone and rear cone by centre to two ends by
Gradual change is little, and is provided with draw-in groove between the two；Described rotating shaft horizontally rotates on the drill boom being arranged at Deflection drill, sets respectively inside it
Be equipped with the first installing hole being coaxial therewith line and the second installing hole, described second installing hole be bellmouth, and with described rear cone
Match；The right part of described spiral plunger is provided with the eccentric orfice passing through for described inner cone, the left side of described eccentric orfice
Be provided through the 3rd installing hole with described spiral plunger coaxial line, described 3rd installing hole be bellmouth and with described inner cone
Face matches, and is provided with, between described eccentric orfice and described 3rd installing hole, the boss matching with described draw-in groove, described spring
Chuck is set in spiral plunger by the 3rd installing hole, and this spiral plunger passes through threaded engagement in described first installing hole
Interior.
Improve further as the present invention, the left side of described spiral plunger has criss-cross locking slot.Setting with
Upper structure is conveniently to screw out during for more bit change or screw spiral plunger, easy to operate and hommization.
Contrast prior art, the invention has the beneficial effects as follows：
1st, multiple locking seams are provided with collet, during use, collet can be plastically deformed, can be effective by drill bit
Hold tightly, there is larger enclasping force, and the longer dimension held tightly, carrying out chuck during drilling will not in the effect of this kind of collet
Occur to swing or play, drilling can go out the higher hole body of precision.
2nd, it is provided with spiral plunger, inner cone and rear cone are provided with collet simultaneously, rear cone when being clamped
Can with rotating shaft on the firmly clamping of the second installing hole, simultaneously inner cone firmly withstood by the 3rd installing hole on spiral plunger.
When rotating screw plunger, this spiral plunger can enter the second installing hole by the 3rd installing hole goring push spring chuck, causes bullet
Increasingly tighter between the second installing hole on the rear cone and rotating shaft of spring chuck, finally make embracing between this collet and drill bit
Clamp force is increasing, has enough lengths of fit between collet and rotating shaft simultaneously, and carrying out drill bit rotation during drilling can more
Stable, safety.
3rd, it is provided with boss, this boss and draw-in groove are mutually clamped.Due to clamping between collet and rotating shaft, when need
Will more bit change when, rotating screw plunger, this boss and draw-in groove are mutually clamped, and can effectively extract collet, comparison side
Just and hommization.
4th, collet and spiral plunger are mounted on the inside of rotating shaft, and the external part not protruding rotating shaft thickness is deposited
So can effectively reduce the thickness of drill boom, the thickness boring wall is contracted to 150mm by I, in so narrow and small work
In the case of the internal drilling of gap, effectively reduce the thickness of drill boom using this kind of structure, inventor has paid the work of hardships, has
Certain creativeness.
5th, rotating shaft is arranged on the drill boom of Deflection drill by bearing, rubs for rolling between fixing-stable and rotating shaft and bearing
Wipe, effectively increase the service life of the present invention.
Brief description
Fig. 1 is the structural representation of Deflection drill drill bit clamping device of the present invention；
In figure：1st, drill boom, 2, rotating shaft, 3, collet, 4, spiral plunger, 5, cylinder, 6, locking seam, 7, inner cone, 8, rear bore
Face, 9, draw-in groove, the 10, first installing hole, the 11, second installing hole, 12, eccentric orfice, the 13, the 3rd installing hole, 14, boss, 15, locking
Groove.
Specific embodiment
The present invention will be further described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the invention provides a kind of Deflection drill drill bit clamping device, its structure includes, rotating shaft 2, spring clip
3 and spiral plunger 4.Collet 3 includes the cylinder 5 of annular, cylinder 5 has several along its axis and locks seam 6,
This locking seam 6 is uniformly arranged around cylinder 5 annular, and the two ends of cylinder 5 are respectively arranged with inner cone 7 and rear cone 8, inner cone 7
Tapered into two ends by centre with the radius of rear cone 8, and be provided with draw-in groove 9 between the two.As shown in figure 1, rotating shaft 2 water
Flat turn is moved in setting and the drill boom 1 of Deflection drill, has the first installing hole 10 being coaxial therewith line and the second installation inside it
Hole 11, the second installing hole 11 is bellmouth, and matches with described rear cone 8.As shown in figure 1, the right part of spiral plunger 4 sets
It is equipped with the eccentric orfice 12 passing through for described inner cone 7, the left side of this eccentric orfice 12 is provided through and spiral plunger 4 coaxial line
The 3rd installing hole 13.3rd installing hole 13 is bellmouth and is matched with described inner cone 7.Eccentric orfice 12 and the 3rd installing hole
It is provided with the boss 14 matching with described draw-in groove 9, collet 3 is set in spiral plunger by the 3rd installing hole 13 between 13
In 4, and this spiral plunger 4 passes through threaded engagement in described first installing hole 10.
Conveniently screw out during for more bit change or screw spiral plunger, as shown in figure 1, opening on the left side of spiral plunger 4
Locking slot 15 cruciferous.It is only necessary to pass through locking slot 15 turn spiral plunger 4 during use.
Contrast prior art, the invention has the beneficial effects as follows：
1st, multiple locking seams are provided with collet, during use, collet can be plastically deformed, can be effective by drill bit
Hold tightly, there is larger enclasping force, and the longer dimension held tightly, carrying out chuck during drilling will not in the effect of this kind of collet
Occur to swing or play, drilling can go out the higher hole body of precision.
2nd, it is provided with spiral plunger, inner cone and rear cone are provided with collet simultaneously, rear cone when being clamped
Can with rotating shaft on the firmly clamping of the second installing hole, simultaneously inner cone firmly withstood by the 3rd installing hole on spiral plunger.
When rotating screw plunger, this spiral plunger can enter the second installing hole by the 3rd installing hole goring push spring chuck, causes bullet
Increasingly tighter between the second installing hole on the rear cone and rotating shaft of spring chuck, finally make embracing between this collet and drill bit
Clamp force is increasing, has enough lengths of fit between collet and rotating shaft simultaneously, and carrying out drill bit rotation during drilling can more
Stable, safety.
3rd, it is provided with boss, this boss and draw-in groove are mutually clamped.Due to clamping between collet and rotating shaft, when need
Will more bit change when, rotating screw plunger, this boss and draw-in groove are mutually clamped, and can effectively extract collet, comparison side
Just and hommization.
4th, collet and spiral plunger are mounted on the inside of rotating shaft, and the external part not protruding rotating shaft thickness is deposited
So can effectively reduce the thickness of drill boom, the thickness boring wall is contracted to mm by I, in the so narrow and small working clearance
In the case of internal drilling, effectively reduce the thickness of drill boom using this kind of structure, inventor has paid the work of hardships, have certain
Creativeness.
5th, rotating shaft is arranged on drill boom by bearing, is rolling friction, effectively carries between fixing-stable and rotating shaft and bearing
The high service life of the present invention.
It should be noted that the present embodiment is the most preferred embodiment of the present invention, it is not that other forms are made to the present invention
Restriction, any technology contents all possibly also with the disclosure above for the those skilled in the art that belong to are changed or are modified as
Equivalent implementations with change.But on the premise of every principle without departing from the technology of the present invention, the technology according to the present invention is real
Any simple modification, equivalent variations and remodeling that confrontation embodiment of above is made, all should fall into scope of patent protection of the present invention.
Claims (2)
1. a kind of Deflection drill drill bit clamping device it is characterised in that：Including rotating shaft, collet and spiral plunger, described bullet
Spring chuck includes the cylinder of annular, described cylinder has several locking seams along its axis, described locking seam is around cylinder ring
Shape is uniformly arranged, and the two ends of described cylinder are respectively arranged with inner cone and rear cone, and the radius of described inner cone and rear cone is equal
Tapered into two ends from centre, and be provided with draw-in groove between the two；Described rotating shaft horizontally rotates the drill boom being arranged at Deflection drill
On, it is respectively arranged with the first installing hole being coaxial therewith line and the second installing hole inside it, described second installing hole is bellmouth,
And match with described rear cone；The right part of described spiral plunger is provided with the eccentric orfice passing through for described inner cone, institute
State the 3rd installing hole that the left side of eccentric orfice is provided through with described spiral plunger coaxial line, described 3rd installing hole is taper
Hole and being matched with described inner cone, is provided between described eccentric orfice and described 3rd installing hole and is matched with described draw-in groove
Boss, described collet is set in spiral plunger by the 3rd installing hole, and this spiral plunger passes through threaded engagement in institute
State the first installation in the hole.
2. new-type Deflection drill according to claim 1 it is characterised in that：Cross is had on the left side of described spiral plunger
The locking slot of shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801868.0A CN106392116A (en) | 2016-09-05 | 2016-09-05 | Drill bit clamping mechanism of deflected drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801868.0A CN106392116A (en) | 2016-09-05 | 2016-09-05 | Drill bit clamping mechanism of deflected drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106392116A true CN106392116A (en) | 2017-02-15 |
Family
ID=57998685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610801868.0A Pending CN106392116A (en) | 2016-09-05 | 2016-09-05 | Drill bit clamping mechanism of deflected drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106392116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193612A (en) * | 2019-07-02 | 2019-09-03 | 沈阳机床(集团)有限责任公司 | A kind of expansion set structure of bidirectional locking |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652100A (en) * | 1970-07-02 | 1972-03-28 | Houdaille Industries Inc | Collet chuck |
| CN2198056Y (en) * | 1994-07-29 | 1995-05-24 | 北京机床附件厂 | Easy unloading spring chuck |
| CN2579579Y (en) * | 2002-11-28 | 2003-10-15 | 东方汽轮机厂 | Deflection drill |
| CN102489737A (en) * | 2011-12-09 | 2012-06-13 | 青岛捷能汽轮机集团股份有限公司 | Punching device and punching machine using same |
| CN203109282U (en) * | 2013-03-25 | 2013-08-07 | 刘太恒 | Spring collet |
| CN206028781U (en) * | 2016-09-05 | 2017-03-22 | 山东齐鲁电机制造有限公司 | Roll over to boring drill bit fixture |
-
2016
- 2016-09-05 CN CN201610801868.0A patent/CN106392116A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652100A (en) * | 1970-07-02 | 1972-03-28 | Houdaille Industries Inc | Collet chuck |
| CN2198056Y (en) * | 1994-07-29 | 1995-05-24 | 北京机床附件厂 | Easy unloading spring chuck |
| CN2579579Y (en) * | 2002-11-28 | 2003-10-15 | 东方汽轮机厂 | Deflection drill |
| CN102489737A (en) * | 2011-12-09 | 2012-06-13 | 青岛捷能汽轮机集团股份有限公司 | Punching device and punching machine using same |
| CN203109282U (en) * | 2013-03-25 | 2013-08-07 | 刘太恒 | Spring collet |
| CN206028781U (en) * | 2016-09-05 | 2017-03-22 | 山东齐鲁电机制造有限公司 | Roll over to boring drill bit fixture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193612A (en) * | 2019-07-02 | 2019-09-03 | 沈阳机床(集团)有限责任公司 | A kind of expansion set structure of bidirectional locking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105386994A (en) | Centrifugal compressor impeller locking structure | |
| CN206028781U (en) | Roll over to boring drill bit fixture | |
| CN106392116A (en) | Drill bit clamping mechanism of deflected drill | |
| CN106217297B (en) | One kind builds municipal gardens installation tool | |
| CN206028798U (en) | New -type to brill | |
| CN104354071A (en) | Indexing mechanism | |
| CN102343447B (en) | A kind of Novel keyless drill chuck | |
| CN203917963U (en) | Lathe for turning impactor outer shell cylindrical | |
| CN207534009U (en) | A kind of structure improved depth drill | |
| CN207534016U (en) | Multi-functional compound step drill | |
| CN203843246U (en) | Threaded-connection-type lengthened drill bit | |
| CN206263295U (en) | A kind of guiding transition sleeve for connecting wrapping body and fairlead | |
| CN203875356U (en) | Special lathe for cylindrical turning of outer cylinder of impacter | |
| CN209774549U (en) | Broken pipe extractor | |
| CN106424818A (en) | Novel bending drill | |
| CN212497591U (en) | Dustproof drilling equipment for building engineering | |
| CN203917964U (en) | For processing the top of impactor outer shell | |
| CN106694949B (en) | It is a kind of for connect wrapping body and guide sleeve guiding transition sleeve | |
| CN203875355U (en) | Special center for machining outer cylinder of impacter | |
| CN218193799U (en) | Lathe fixture capable of adjusting rotary dynamic balance | |
| CN104708580B (en) | A kind of installation tool and its application method of compressor stator ring | |
| CN205020881U (en) | Blower fan wheel hub main shaft spot facing work jig | |
| CN206122763U (en) | Hole saw quick change adapter | |
| CN206028782U (en) | Increase tapering area of contact's high accuracy collet chuck | |
| CN213257150U (en) | Alloy material's live center mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |