CN207431441U - A kind of hole processing drill bit - Google Patents
A kind of hole processing drill bit Download PDFInfo
- Publication number
- CN207431441U CN207431441U CN201721462099.2U CN201721462099U CN207431441U CN 207431441 U CN207431441 U CN 207431441U CN 201721462099 U CN201721462099 U CN 201721462099U CN 207431441 U CN207431441 U CN 207431441U
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- CN
- China
- Prior art keywords
- teeth
- drill bit
- degree
- processing
- hole processing
- 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
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Abstract
The utility model provides a kind of hole processing drill bit, belongs to technical field of mechanical processing.It solves the problems, such as that existing processing drill machining accuracy is low, use flexibly is poor.This hole processing drill bit, including drill body and teeth, teeth tail end has axially extending neck, it is connected between neck and drill body by cylinder table, the tail end of drill body is provided with screw-tap threaded section, teeth top is provided with the starting taper in triangular shape, and the top length L1 to teeth tail end of starting taper is 13 millimeters, teeth are made of several circumferential spiral-distributed processing teeth, several processing tooth diameters are incremented by step by step at starting taper along tail end direction, and the tooth half-angle a between the adjacent processing tooth of each two is 60 degree, there are several tapping thread sections in screw-tap threaded section, and the rib apex angle b between adjacent tapping thread section is 19.3 degree, there is the Inner arc being recessed inwardly in the middle part of every section of tapping thread section.The utility model has many advantages, such as high precision machining, efficient stable.
Description
Technical field
The utility model belongs to technical field of mechanical processing, is related to a kind of drill bit, and more particularly to a kind of hole processing is bored
Head.
Background technology
Screw thread is the major way of existing machinery parts connection, and in threaded process is machined, screw thread is at one
On cylindrical axis（Or bore area）It is cut into cutter or emery wheel, workpiece is gone around at this time, and cutter is axially moved along workpiece
Dynamic a certain distance, the trace that cutter is cut out on workpiece is exactly screw thread.Therefore threaded hole drill bit has for the processing of screw thread
Vital effect.
The diameter of the most teeth of drill bit on existing market for processing screw thread is roughly the same with drill body diameter, processed
Cheng Zhong due to the dimensional problem of diameter, may cause the accuracy of thread processed to be difficult to reach standard, in using for part
Occur mismatch error in journey, meanwhile, because process unit is single, in processing different parts, it is necessary to replace instrument, cause to add
Work efficiency rate reduces.
The content of the invention
The purpose of this utility model be for the above-mentioned problems in the prior art, provide a kind of high precision machining,
The hole processing drill bit of efficient stable.
The purpose of this utility model can be realized by following technical proposal：A kind of hole processing drill bit, including drill body
And teeth, which is characterized in that the teeth tail end has axially extending neck, leads between the neck and drill body
It crosses cylinder table to be connected, the tail end of the drill body is provided with screw-tap threaded section, and the teeth top is provided in triangular shape
Starting taper, and the top length L1 to teeth tail end of starting taper is 13 millimeters, and the teeth are by several circumferential helical arrangements
Processing tooth composition, processing tooth diameter described in several is incremented by step by step at starting taper along tail end direction, and each two is adjacent
The tooth half-angle a processed between tooth is 60 degree, has several tapping thread sections, and adjacent tapping spiral shell in the screw-tap threaded section
Rib apex angle b between line section is 19.3 degree, has the Inner arc being recessed inwardly, inner circle arc angle c in the middle part of every section of tapping thread section
For 31.3 degree.
In a kind of above-mentioned hole processing drill bit, the horizontal tilt degree between the tip circle of the cylinder table and bottom circle
D is 20 degree.
In a kind of above-mentioned hole processing drill bit, the screw-tap threaded section top have it is axial raised top,
The top oblique angle is 45 degree.
In a kind of above-mentioned hole processing drill bit, the neck length L2 is 8 millimeters.
In a kind of above-mentioned hole processing drill bit, the ratio of the recess diameter D2 and drill body diameter D1 are 1.3:2.
In a kind of above-mentioned hole processing drill bit, the square footpath D3 of the screw-tap threaded section is 3.2 millimeters.
Compared with prior art, this hole processing drill bit both ends are respectively arranged with screw-tap threaded section and teeth, for full
The different processing part of foot, teeth are by several circumferential screw diameters from starting taper along tail end direction incremental processing tooth group step by step
Into, processing when, machining accuracy can be improved, there is high precision machining, efficient stable.
Description of the drawings
Fig. 1 is the middle body structure diagram of this hole processing drill bit.
Fig. 2 is the sectional view of this hole processing drill bit plug tap thread segment.
In figure, 1, drill body；2nd, teeth；3rd, neck；4th, cylinder table；5th, screw-tap threaded section；6th, starting taper；7th, tooth is processed；8th, attack
Silk thread segment；9th, Inner arc；10th, cone.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, this hole processing drill bit, overall length is arranged on 55.3 millimeters, including drill body 1 and teeth 2, tooth
2 tail end of tooth has axially extending neck 3, is connected between neck 3 and drill body 1 by cylinder table 4, the tail end of drill body 1 is set
Screw-tap threaded section 5 is equipped with, 2 top of teeth is provided with the starting taper 6 in triangular shape, and the top length to 2 tail end of teeth of starting taper 6
L1 is 13 millimeters, and teeth 2 are made of several circumferential spiral-distributed processing teeth 7, several processing 7 diameters of tooth are at starting taper 6
It is incremented by step by step along tail end direction, and the tooth half-angle a between the adjacent processing tooth 7 of each two is 60 degree, in Drilling operation,
Cutting angle is 8.7 degree, has several tapping thread sections 8, and the rib top between adjacent tapping thread section 8 in screw-tap threaded section 5
Angle b is 19.3 degree, and every section of 8 middle part of tapping thread section has the Inner arc 9 being recessed inwardly, and 9 jiaos of c of Inner arc are 31.3 degree.
It further describes in detail, the horizontal tilt degree d between the tip circle of cylinder table 4 and bottom circle is 20 degree.
It further describes in detail, 5 top of screw-tap threaded section has axial raised cone 10, and described top 10 oblique angle is
45 degree.
It further describes in detail, 3 length L2 of neck is 8 millimeters.
It further describes in detail, the ratio of 1 diameter D1 of 3 diameter D2 of neck and drill body is 1.3:2.
It further describes in detail, the square footpath D3 of screw-tap threaded section 5 is 3.2 millimeters.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although drill body 1, teeth 2, neck 3, cylinder table 4, screw-tap threaded section 5, starting taper 6, processing is used more herein
The terms such as tooth 7, tapping thread section 8, Inner arc 9, cone 10, but it does not preclude the possibility of using other terms.Use these
Term is used for the purpose of more easily describing and explaining the essence of the utility model；It is construed as any additional limit
System is all contrary to the spirit of the present invention.
Claims (6)
1. a kind of hole processing drill bit, overall length is arranged on 55.3 millimeters, including drill body（1）And teeth（2）, feature exists
In the teeth（2）Tail end has axially extending neck（3）, the neck（3）With drill body（1）Between pass through circle
Pylon（4）It is connected, the drill body（1）Tail end be provided with screw-tap threaded section（5）, the teeth（2）Top is provided with
In the starting taper of triangular shape（6）, and starting taper（6）It is top to teeth（2）The length L1 of tail end is 13 millimeters, the teeth（2）
By several circumferential spiral-distributed processing teeth（7）Composition, the processing tooth described in several（7）Diameter is from starting taper（6）Place is along tail
Extreme direction is incremented by step by step, and the processing tooth that each two is adjacent（7）Between tooth half-angle a be 60 degree, the screw-tap threaded section
（5）It is upper that there are several tapping thread sections（8）, and adjacent tapping thread section（8）Between rib apex angle b for 19.3 degree, every section of tapping
Thread segment（8）Middle part has the Inner arc being recessed inwardly（9）, Inner arc（9）Angle c is 31.3 degree.
A kind of 2. hole processing drill bit according to claim 1, which is characterized in that the cylinder table（4）Tip circle
Horizontal tilt degree d between justifying the bottom of with is 20 degree.
A kind of 3. hole processing drill bit according to claim 1, which is characterized in that the screw-tap threaded section（5）Top
End have it is axial raised top, the top oblique angle be 45 degree.
A kind of 4. hole processing drill bit according to claim 1, which is characterized in that the neck（3）Length L2 is 8 millis
Rice.
A kind of 5. hole processing drill bit according to claim 1, which is characterized in that the neck（3）Diameter D2 is with boring
Body（1）The ratio of diameter D1 is 1.3:2.
A kind of 6. hole processing drill bit according to claim 1, which is characterized in that the screw-tap threaded section（5）Side
Footpath D3 is 3.2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721462099.2U CN207431441U (en) | 2017-11-06 | 2017-11-06 | A kind of hole processing drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721462099.2U CN207431441U (en) | 2017-11-06 | 2017-11-06 | A kind of hole processing drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207431441U true CN207431441U (en) | 2018-06-01 |
Family
ID=62292055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721462099.2U Expired - Fee Related CN207431441U (en) | 2017-11-06 | 2017-11-06 | A kind of hole processing drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207431441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717144A (en) * | 2017-11-06 | 2018-02-23 | 温岭市多宝力工具厂（普通合伙） | A kind of hole processing drill bit |
-
2017
- 2017-11-06 CN CN201721462099.2U patent/CN207431441U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717144A (en) * | 2017-11-06 | 2018-02-23 | 温岭市多宝力工具厂（普通合伙） | A kind of hole processing drill bit |
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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: 20180601 Termination date: 20181106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |