CN217964927U - Composite stepped drill bit capable of prolonging grinding times - Google Patents
Composite stepped drill bit capable of prolonging grinding times Download PDFInfo
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- CN217964927U CN217964927U CN202221925836.9U CN202221925836U CN217964927U CN 217964927 U CN217964927 U CN 217964927U CN 202221925836 U CN202221925836 U CN 202221925836U CN 217964927 U CN217964927 U CN 217964927U
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Abstract
The utility model discloses a compound ladder drill bit of coping number of times can prolong, including the cutter body, cutter body one end has two step swords that set up along axial symmetry, the cutter body surface is located two be formed with main chip groove between the step sword, the cutter body surface is located two be provided with supplementary chip groove between the main chip groove afterbody, be provided with ladder chamfer sword on the step sword, the step sword extends to the cutter body front end and is provided with front end cutting sword, the conical surface angle of cutter body front end drill bit is 135 degrees, the utility model discloses the effectual current ladder drill bit cutting edge fatigue resistance of having solved is low and the chip removal performance is poor, and the coping number of times is many to the processing cost has been improved, unsatisfied user demand's problem.
Description
Technical Field
The utility model relates to a step drill technical field specifically is a compound step drill of coping number of times can prolong.
Background
The step drill is also called a step drill or a pagoda drill, and is mainly used for drilling and processing thin steel plates within 3mm, one drill can replace a plurality of drills to process holes with different diameters as required, and large holes can be processed at one time without replacing the drill, drilling positioning holes and the like.
The cutting edge of the existing stepped drill bit has low fatigue resistance, poor chip removal performance and more grinding times, thereby improving the processing cost and not meeting the use requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can prolong compound stepped drill of coping number of times to it is low and the chip removal performance is poor to solve current stepped drill cutting edge fatigue resistance, and the coping number of times is many, thereby has improved the problem of processing cost.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a compound ladder drill bit of coping number of times can prolong, includes the cutter body, cutter body one end has two step sword that set up along axial symmetry, the cutter body surface is located two be formed with main chip groove between the step sword, the cutter body surface is located two be provided with supplementary chip groove between the main chip groove afterbody, be provided with the ladder chamfer sword on the step sword, the step sword extends to the cutter body front end and is provided with the front end cutting sword.
Wherein, the conical surface angle of the drill bit at the front end of the cutter body is 130-140 degrees.
Wherein, the length of the main chip groove is 42mm-47mm.
The length of the cutter body is 100mm-110mm, and the diameter of the cutter body is 15mm-18mm.
Wherein the diameter of the front end of the cutter body is 12mm-13mm.
Compared with the prior art, the beneficial effects of the utility model are that:
through supplementary chip groove of edge processing and ladder chamfer sword machine-shaping behind front end cutting edge department, step sword and ladder chamfer sword distinguish wrong tooth abrasive machining, increase supplementary chip groove design, make difficult stifled bits production pile and scratch work piece surface lines of a knife in the cutter processing work piece actual process, can prolong the step sword, the repeated coping number of times of front end cutting sword has broken conventional cutter structure coping limitation, the utility model discloses a front end cutting sword and the ladder chamfer sword distribution cutting that set up have improved front end cutting sword fatigue resistance and good chip removal performance, have realized that processing ladder step length size is short, under the influence circumstances of cutting edge number limitation, have prolonged the coping number through improving structural design and have improved processing life greatly, reduce the processing cost and have improved efficiency and quality, improve cutting efficiency and effective approach of processingquality through cutter geometric construction design improvement cutting performance.
Drawings
Fig. 1 is the overall structure diagram of the present invention.
In the figure: 1. a front end cutting edge; 2. a main chip groove; 3. an auxiliary chip groove; 4. a stepped chamfer edge; 5. a step blade; 6. a knife body.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides a compound ladder drill of coping number of times can prolong, includes cutter body 6, 6 one end of cutter body has two step sword 5 along axial symmetry setting, 6 surfaces of cutter body are located two be formed with main chip groove 2 between the step sword 5, 6 surfaces of cutter body are located two be provided with supplementary chip groove 3 between the 2 afterbody of main chip groove, be provided with ladder chamfer sword 4 on the step sword 5, step sword 5 extends to 6 front ends of cutter body and is provided with front end cutting sword 1.
In one embodiment, the taper angle of the drill bit at the front end of the cutter body 6 is 135 degrees.
The length of the main chip removal groove 2 is 45mm, and chip removal performance is improved.
The length of the cutter body 6 is 106mm, and the diameter of the cutter body 6 is 18mm.
The diameter of the front end of the cutter body 6 is 12.55mm.
The working principle is as follows: during the use, follow the supplementary chip groove 3 of processing and ladder chamfer sword 4 machine-shaping behind the front end cutting edge 1 department, step sword 5 and ladder chamfer sword 4 distinguish wrong tooth abrasive machining, increase supplementary chip groove 3 design, make difficult stifled bits production built-up edge and scratch work piece surface knife lines etc. in the cutter processing work piece actual process, can prolong the repeated coping number of times of step sword 5, broken conventional cutter structure coping limitation, the utility model discloses a front end cutting edge 1 and the ladder chamfer sword 4 distribution cutting that sets up have improved cutting edge fatigue resistance and good chip removal performance, have realized that processing ladder step length size is short, under the influence circumstances of cutting edge coping number limitation, have prolonged the coping number through improving structural design and have improved processing life greatly, reduce the processing cost and improved efficiency and quality, improve cutting efficiency and processingquality effective approach through cutter geometric construction design.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a can prolong compound ladder drill of coping number of times, includes cutter body (6), its characterized in that: cutter body (6) one end has two step sword (5) that set up along axial symmetry, the cutter body surface is located two be formed with main chip groove (2) between step sword (5), cutter body (6) surface is located two be provided with supplementary chip groove (3) between main chip groove (2) the afterbody, be provided with ladder chamfer sword (4) on step sword (5), step sword (5) extend to cutter body (6) front end and are provided with front end cutting sword (1).
2. The compound stepped drill bit capable of prolonging the grinding times according to claim 1, wherein: the conical surface angle of the drill bit at the front end of the cutter body (6) is 130-140 degrees.
3. The compound stepped drill bit capable of prolonging the grinding times according to claim 1, wherein: the length of the main chip discharge groove (2) is 42mm-47mm.
4. The compound stepped drill bit capable of prolonging the grinding times according to claim 1, wherein: the length of the cutter body (6) is 100mm-110mm, and the diameter of the cutter body (6) is 15mm-18mm.
5. The compound stepped drill bit capable of prolonging the grinding times according to claim 1, wherein: the diameter of the front end of the cutter body (6) is 12mm-13mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221925836.9U CN217964927U (en) | 2022-07-25 | 2022-07-25 | Composite stepped drill bit capable of prolonging grinding times |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221925836.9U CN217964927U (en) | 2022-07-25 | 2022-07-25 | Composite stepped drill bit capable of prolonging grinding times |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217964927U true CN217964927U (en) | 2022-12-06 |
Family
ID=84281978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221925836.9U Active CN217964927U (en) | 2022-07-25 | 2022-07-25 | Composite stepped drill bit capable of prolonging grinding times |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217964927U (en) |
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2022
- 2022-07-25 CN CN202221925836.9U patent/CN217964927U/en active Active
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