CN206253699U - A kind of left-handed Step drill - Google Patents
A kind of left-handed Step drill Download PDFInfo
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- CN206253699U CN206253699U CN201621332672.3U CN201621332672U CN206253699U CN 206253699 U CN206253699 U CN 206253699U CN 201621332672 U CN201621332672 U CN 201621332672U CN 206253699 U CN206253699 U CN 206253699U
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Abstract
The utility model discloses a kind of left-handed Step drill, include drillstock bar and at least two main processing bars, two main processing bars are respectively preceding main processing bar and rear main processing bar, transition processing bar is connected between preceding main processing bar and rear main processing bar, the drillstock bar is integrally formed with the tail end of rear main processing bar and is connected, the front end of preceding main processing bar has apex point, all sides of preceding main processing bar are formed with preceding spiral cutting edge, all sides of main processing bar are formed with rear screw blade afterwards, by the tail end of preceding main processing bar, the main front end for processing bar gradually increases the external diameter of transition processing bar backward, all sides of transition processing bar are formed with curved blade and turn.By being provided with least two main processing bars, the external diameters of two main processing bars are different, and connected by transition processing bar between two main processing bars, using transition processing bar can device to hole process chamfering, coordinating multiple main processing bars can process stepped hole, for processing operation offers convenience.
Description
Technical field
The utility model is related to field of drill technology, refers in particular to a kind of left-handed Step drill.
Background technology
In part processing, the action of many punching and tapping is had, and drill bit is exactly to be punched on this workpiece
The instrument of processing, the drill bit of prior art is usually dextrorotation, and right direction rotary drilling processing is carried out on workpiece, in order to
Improve production efficiency, the workpiece of many very littles is just processed with automatic lathe, after workpiece has beaten hole with drill bit, directly changes screw tap
Tapping is carried out, production efficiency gets a promotion, but due to the difference of drill bit and the processing conditions of screw tap, production efficiency is not also special
It is good, and because drill bit easily weares and teares, the requirement of screw tap tapping is again special high, and such quality problem occurs as soon as a lot.
Thus, left-handed drill bit is occurred in that at present, and left-handed drill bit is when Drilling operation is carried out and tapping is processed without changing
Change direction of rotation, and the rigidity of drill bit can be strengthened, maintain bit cutting ability simultaneously to strengthen, it is ensured that chip removal in process
It is unobstructed.However, current left-handed drill bit is unable to chamfering and stepped hole, range of application is narrow.Therefore, it is necessary to current
Left-handed drill bit is improved.
The content of the invention
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of left-handed the utility model
Rank drill bit, it effectively solves the problems, such as that existing left-handed drill bit is unable to chamfering and stepped hole.
To achieve the above object, the utility model is using following technical scheme：
A kind of left-handed Step drill, includes drillstock bar and at least two main processing bars, and two main processing bars are respectively preceding master
Processing bar and rear main processing bar, it is preceding it is main processing bar and it is rear it is main processing bar between be connected with transition processing bar, the drillstock bar with
The tail end of main processing bar is integrally formed connection afterwards, and preceding main processing bar, transition processing bar, rear main processing bar and the drillstock bar coaxially set
Put, all sides that the front end of preceding main processing bar has apex point, preceding main processing bar are formed with preceding spiral cutting edge, and preceding spiral cutting edge is to the left
Rotation, the external diameter of the external diameter more than preceding main processing bar of the rear main processing bar, all sides of rear main processing bar are formed with rear screw knife
Sword, rear screw blade to anticlockwise, the external diameter of transition processing bar by preceding main processing bar tail end main processing bar backward front end
Gradually increase, all sides of transition processing bar are formed with curved blade, and the curved blade is to anticlockwise.
Preferably, the external diameter of the external diameter of the drillstock bar main processing bar after being more than.
Preferably, the length of main processing bar after the length of the preceding main processing bar is less than.
Preferably, the preceding main processing bar has preceding spiral grooves, and the rear main processing bar has rear screw groove, the rear spiral shell
Rotation groove is connected with preceding spiral grooves.
The utility model has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technology
Scheme understands：
By being provided with least two main processing bars, the external diameter of two main processing bars is different, and by mistake between two main processing bars
Cross processing bar connection, using transition processing bar can device to hole process chamfering, coordinate multiple main processing bars to process stepped hole, be
Processing operation offers convenience.
More clearly to illustrate architectural feature of the present utility model and effect, come right with specific embodiment below in conjunction with the accompanying drawings
The utility model is described in detail.
Brief description of the drawings
Fig. 1 is the front view of the preferred embodiment of the utility model.
Accompanying drawing identifier declaration：
10th, drillstock bar 20, preceding main processing bar
21st, apex point 22, preceding spiral cutting edge
23rd, preceding spiral grooves 30, rear main processing bar
31st, rear screw blade 32, rear screw groove
40th, transition processing bar 41, curved blade
Specific embodiment
Refer to shown in Fig. 1, that show the concrete structure of the preferred embodiment of the utility model, include drillstock bar
10 and at least two main processing bars, two main processing bars are respectively preceding main processing bar 20 and rear main processing bar 30, preceding main processing bar 20
Transition processing bar 40 is connected between rear main processing bar 30.
The drillstock bar 10 is integrally formed with the tail end of rear main processing bar 30 and is connected, preceding main processing bar 20, the transition processing bar
40th, rear main processing bar 30 and drillstock bar 10 are coaxially disposed, and the front end of preceding main processing bar 20 has apex point 21, preceding main processing bar 20
All sides are formed with preceding spiral cutting edge 22, and preceding spiral cutting edge 22 adds to anticlockwise, the external diameter of the rear main processing bar 30 more than preceding master
The external diameter of work bar 20, it is rear it is main processing bar 30 all sides be formed with rear screw blade 31, rear screw blade 31 to anticlockwise, the mistake
Cross processing bar 40 external diameter by it is preceding it is main processing bar 20 tail end backward it is main processing bar 30 front end gradually increase, transition processing bar 40
All sides be formed with curved blade 41, the curved blade 41 is to anticlockwise.
In the present embodiment, the external diameter of the external diameter of the drillstock bar 10 main processing bar 30 after being more than, the preceding main processing bar
The length of 20 length main processing bar 30 after being less than.
The preceding main processing bar 20 has preceding spiral grooves 23, and the rear main processing bar 30 has rear screw groove 32, after this
Spiral grooves 32 are connected with preceding spiral grooves 23.
Design focal point of the present utility model is：By being provided with least two main processing bars, the external diameter of two main processing bars is different,
And connected by transition processing bar between two main processing bars, using transition processing bar can device to hole process chamfering, coordinate multiple main
Processing bar can process stepped hole, for processing operation offers convenience.
Know-why of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With new principle, and can not by any way be construed to the limitation to the utility model protection domain.Based on explanation herein,
Those skilled in the art associates other specific embodiments of the present utility model by would not require any inventive effort,
These modes are fallen within protection domain of the present utility model.
Claims (4)
1. a kind of left-handed Step drill, it is characterised in that：Include drillstock bar and at least two main processing bars, two main processing bars point
Not Wei it is preceding it is main processing bar and rear main processing bar, it is preceding it is main processing bar and it is rear it is main processing bar between be connected with transition processing bar, should
Drillstock bar is integrally formed with the tail end of rear main processing bar and is connected, the preceding main processing bar, transition processing bar, rear main processing bar and drillstock
Bar is coaxially disposed, and all sides that the front end of preceding main processing bar has apex point, preceding main processing bar are formed with preceding spiral cutting edge, preceding spiral
To anticlockwise, more than the preceding main external diameter for processing bar, all sides of rear main processing bar are formed with the external diameter of the rear main processing bar blade
Rear screw blade, to anticlockwise, the external diameter of transition processing bar is by the preceding main tail end main processing backward for processing bar for rear screw blade
The front end of bar gradually increases, and all sides of transition processing bar are formed with curved blade, and the curved blade is to anticlockwise.
2. a kind of left-handed Step drill as claimed in claim 1, it is characterised in that：The external diameter of the drillstock bar is main after being more than to be added
The external diameter of work bar.
3. a kind of left-handed Step drill as claimed in claim 1, it is characterised in that：After the length of the preceding main processing bar is less than
The length of main processing bar.
4. a kind of left-handed Step drill as claimed in claim 1, it is characterised in that：The preceding main processing bar has preceding spiral goove
Groove, the rear main processing bar has rear screw groove, and the rear screw groove is connected with preceding spiral grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332672.3U CN206253699U (en) | 2016-12-07 | 2016-12-07 | A kind of left-handed Step drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621332672.3U CN206253699U (en) | 2016-12-07 | 2016-12-07 | A kind of left-handed Step drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206253699U true CN206253699U (en) | 2017-06-16 |
Family
ID=59028642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621332672.3U Active CN206253699U (en) | 2016-12-07 | 2016-12-07 | A kind of left-handed Step drill |
Country Status (1)
| Country | Link |
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| CN (1) | CN206253699U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107984176A (en) * | 2017-12-19 | 2018-05-04 | 盛瑞传动股份有限公司 | A kind of preliminary working technique of transfer matic processing gear chamber |
| CN108098273A (en) * | 2017-12-19 | 2018-06-01 | 盛瑞传动股份有限公司 | Transfer matic processes the processing technology of gear chamber |
| CN108405935A (en) * | 2018-06-11 | 2018-08-17 | 常熟市磊王合金工具有限公司 | A kind of drill bit using multitool access slot |
| CN111408760A (en) * | 2020-04-29 | 2020-07-14 | 宁波格林工艺玩具有限公司 | High-efficient perforating device |
-
2016
- 2016-12-07 CN CN201621332672.3U patent/CN206253699U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107984176A (en) * | 2017-12-19 | 2018-05-04 | 盛瑞传动股份有限公司 | A kind of preliminary working technique of transfer matic processing gear chamber |
| CN108098273A (en) * | 2017-12-19 | 2018-06-01 | 盛瑞传动股份有限公司 | Transfer matic processes the processing technology of gear chamber |
| CN107984176B (en) * | 2017-12-19 | 2020-03-10 | 盛瑞传动股份有限公司 | Initial machining process for machining gear chamber on automatic line |
| CN108098273B (en) * | 2017-12-19 | 2020-04-10 | 盛瑞传动股份有限公司 | Machining process for machining gear chamber on automatic line |
| CN108405935A (en) * | 2018-06-11 | 2018-08-17 | 常熟市磊王合金工具有限公司 | A kind of drill bit using multitool access slot |
| CN111408760A (en) * | 2020-04-29 | 2020-07-14 | 宁波格林工艺玩具有限公司 | High-efficient perforating device |
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