CN207415561U - Opening bit - Google Patents
Opening bit Download PDFInfo
- Publication number
- CN207415561U CN207415561U CN201721212259.8U CN201721212259U CN207415561U CN 207415561 U CN207415561 U CN 207415561U CN 201721212259 U CN201721212259 U CN 201721212259U CN 207415561 U CN207415561 U CN 207415561U
- Authority
- CN
- China
- Prior art keywords
- cutting
- sword
- mounting disc
- head
- main sword
- 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 - Fee Related
Links
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- Drilling Tools (AREA)
Abstract
The utility model discloses a kind of opening bits.It includes drillstock and is connected to the head of drillstock bottom, head includes the mounting disc mounted on drillstock bottom and the main sword of cutting for the pyramidal structure being wholely set with mounting disc, the bottom for cutting main sword sets the tapered cutting head for being less than and cutting main sword taper, it cuts and cutting pair sword is provided between main sword and mounting disc, marginal position extension of the cutting pair sword from cutting head to mounting disc, it cuts and discharge groove is formed between main sword and cutting pair sword, relief hole is placed in mounting disc.After above-mentioned structure, it can be drilled by cutting head and carry out reaming using cutting edge, it cuts main sword and the layout type of cutting pair sword is reasonable, can reaming quickly be carried out to workpiece surface, substantially increase stock-removing efficiency, the material bits formed during the cutting process can be discharged by discharge groove from the relief hole of mounting disc, in addition, the screw thread that the surface of cutting head is set, can improve and rotatably compress power, further improve processing efficiency.
Description
Technical field
The utility model is related to a kind of instrument of carpenter's cutting, specifically a kind of opening bits.
Background technology
Grooved bit is widely used in carpenter's cutting operation, and traditional grooved bit generally comprises the drill bit for drilling
And the cutting set for being used to cut circular hole set outside drill bit, cutting, which is put on, is provided with cutting tooth, in use, being drilled out by drill bit
Centre bore simultaneously passes through cutting set and forms circular hole, and traditional this structure can get circular hole, but since its structure design does not conform to
Reason is generally required often to clear up the sawdust being tucked into during punching in cutting set in drill process, thus reduced
Operating efficiency.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of smart structural designs, and punching is convenient and efficient, operation effect
The high opening bit of rate.
In order to solve the above-mentioned technical problem, the opening bit of the utility model including drillstock and is connected to drillstock bottom
Head, head include mounted on drillstock bottom mounting disc and the pyramidal structure being wholely set with mounting disc cutting master
Sword, the bottom for cutting main sword set the tapered cutting head for being less than and cutting main sword taper, cut and set between main sword and mounting disc
There is cutting pair sword, marginal position extension of the cutting pair sword from cutting head to mounting disc is cut and formed between main sword and cutting pair sword
Discharge groove is placed with relief hole in the mounting disc.
The main sword of the cutting and cutting pair sword are respectively provided with the angle of inclination of 35-75 degree.
The surface of the cutting head is provided with screw thread.
There is curved angle between the surface of the cutting pair sword and the main sword of cutting.
After above-mentioned structure, the main sword of cutting and cutting pair sword that are set due to installation tray bottom and the main sword of cutting
The taper that bottom is set is less than the cutting head for cutting main sword taper, it is possible thereby to be drilled by cutting head and utilize cutting edge
The layout type of progress reaming, the main sword of cutting and cutting pair sword is reasonable, quickly can carry out reaming to workpiece surface, carry significantly
High stock-removing efficiency, the material bits formed during the cutting process can be discharged by discharge groove from the relief hole of mounting disc, in addition, cutting
The screw thread that the surface of head is set is cut, can improve and rotatably compress power, further improve processing efficiency.
Description of the drawings
Fig. 1 is the structure diagram of the utility model opening bit.
Specific embodiment
With reference to the accompanying drawings and detailed description, the opening bit of the utility model is described in further detail.
As shown in the figure, the opening bit of the utility model, including drillstock 1 and the head 2 of drillstock bottom, head are connected to
2 include the mounting disc 3 mounted on drillstock bottom and the main sword 4 of cutting for the pyramidal structure being wholely set with mounting disc, cutting master
The bottom of sword 4 sets the tapered cutting head 5 for being less than and cutting main sword taper, cuts and is provided with cutting between main sword 4 and mounting disc 3
Secondary sword 6, marginal position extension of the cutting pair sword 6 from cutting head to mounting disc, cuts the row of being formed between main sword 4 and cutting pair sword 6
Hopper is placed with relief hole 8 in the mounting disc.
Further, the described main sword 4 of cutting and cutting pair sword 6 are respectively provided with the angle of inclination of 35-75 degree, cutting head 5
Surface is provided with screw thread, has curved angle between cutting pair sword 6 and the surface of the main sword 4 of cutting.
Claims (4)
1. a kind of opening bit, including drillstock（1）And it is connected to the head of drillstock bottom（2）, it is characterised in that：The head
（2）Mounting disc including being mounted on drillstock bottom（3）And the main sword of cutting for the pyramidal structure being wholely set with mounting disc（4）,
The main sword of cutting（4）Bottom the tapered cutting head for being less than and cutting main sword taper is set（5）, the main sword of cutting（4）With
Mounting disc（3）Between be provided with cutting pair sword（6）, the cutting pair sword（6）Extend from cutting head to the marginal position of mounting disc,
The main sword of cutting（4）With cutting pair sword（6）Between form discharge groove, be placed with relief hole in the mounting disc（8）.
2. opening bit described in accordance with the claim 1, it is characterised in that：The main sword of cutting（4）With cutting pair sword（6）Have
There is the angle of inclination of 35-75 degree.
3. according to the opening bit described in claim 1 or 2, it is characterised in that：The cutting head（5）Surface be provided with spiral shell
Line.
4. opening bit described in accordance with the claim 3, it is characterised in that：The cutting pair sword（6）With cutting main sword（4）Table
There is curved angle between face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212259.8U CN207415561U (en) | 2017-09-21 | 2017-09-21 | Opening bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721212259.8U CN207415561U (en) | 2017-09-21 | 2017-09-21 | Opening bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207415561U true CN207415561U (en) | 2018-05-29 |
Family
ID=62313662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721212259.8U Expired - Fee Related CN207415561U (en) | 2017-09-21 | 2017-09-21 | Opening bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207415561U (en) |
-
2017
- 2017-09-21 CN CN201721212259.8U patent/CN207415561U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20210921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |