CN215431692U - Efficient stepped drill bit - Google Patents
Efficient stepped drill bit Download PDFInfo
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- CN215431692U CN215431692U CN202122226080.0U CN202122226080U CN215431692U CN 215431692 U CN215431692 U CN 215431692U CN 202122226080 U CN202122226080 U CN 202122226080U CN 215431692 U CN215431692 U CN 215431692U
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Abstract
The utility model discloses a high-efficiency machining stepped drill bit which comprises a tool body, wherein the tool body consists of a rough machining area, a fine machining area and a tool shank area, one end of the rough machining area is provided with a drill point angle, the rough machining area is provided with a tooth clearance angle, the rough machining area is provided with a clear margin, the rough machining area is provided with a blade width, the rough machining area is provided with a first-order chamfer, the fine machining area is provided with an arc relief angle, the fine machining area is provided with a shovel back relief angle, and the fine machining area is provided with a chip pocket. When the tool is used, the problem that the tool needs to be repeatedly replaced in the production and processing process is solved, the surface quality of a workpiece is improved, one-step forming processing is realized, three procedures of drilling, finishing and chamfering are completed in one step, the chip removal capacity and the structural strength of the tool are enhanced by designing the unique core thickness, and the service life of the tool is prolonged under the condition of ensuring the quality.
Description
Technical Field
The utility model relates to the technical field of cutting tool equipment, in particular to a stepped drill bit capable of being efficiently machined.
Background
With the development of metal cutting machining tool technology, more and more tools are developed at present, such as a two-edge flat-head tool, a four-edge ball-head tool, a chamfering tool and the like, different tools are required to be matched in different use scenes and machining working conditions, in the prior art, the step hole is generally processed twice or more times, the cylindrical counter sink and the conical counter sink are processed on the processed holes, although the requirements of the processing on the cutter are not high, the frequent replacement of the cutter causes the low processing efficiency, the complexity and the time consumption, although the existing cutter can meet the existing processing requirements, the cutter is easy to wear in the processing process, so that the surface quality of the processed workpiece is not high, the service life of the cutter is not high, on the contrary, there is no one-step forming tool in the market with excellent machining effect, so we need to provide a high-efficiency machining stepped drill bit.
Disclosure of Invention
The utility model aims to provide a high-efficiency machining stepped drill bit, which solves the problem that a cutter needs to be repeatedly replaced and used in the production and machining process, improves the surface quality of a workpiece, realizes one-step forming machining, puts three working procedures of drilling, finishing and chamfering in place in one step, enhances the chip removal capability and the structural strength by designing a unique core thickness, prolongs the service life of the cutter under the condition of ensuring the quality and solves the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a high-efficiency machining stepped drill bit comprises a cutter body, wherein the cutter body consists of a rough machining area, a fine machining area and a cutter handle area;
one end of the rough machining area is provided with a sharp point angle, the rough machining area is provided with a tooth clearance angle, the rough machining area is provided with a clear margin, the rough machining area is provided with a blade width, and the rough machining area is provided with a first-order chamfer;
be provided with the circular arc relief angle on the truing processing region, be provided with shovel back relief angle on the truing processing region, the chip pocket has been seted up on the truing processing region.
Preferably, the edge length of the rough machining region is set to 7-7.5cm, the outer diameter of the rough machining region is set to 3.4cm, the edge length of the finishing machining region is set to 7.2-7.7cm, and the outer diameter of the finishing machining region is set to 3.5 cm.
Preferably, the angle of the drill point angle is set to 124 and 126 degrees, and the angle of the tooth clearance angle is set to 53-57 degrees.
Preferably, the size of the edge clearance is set to be 0.11cm, and the width of the leaf width is set to be 0.17 cm.
Preferably, the angle of the first-order chamfer is set to be 30 °, the arc relief angle is set to be a second-order chamfer, and the angle of the arc relief angle is set to be 45 °.
Preferably, the angle of the relief angle is set to 15 °.
Compared with the prior art, the utility model has the beneficial effects that:
1. compared with the traditional cutter body, when the traditional cutter body needs to complete the drilling and chamfering procedures, at least two types of cutters need to be used, and different cutters need to be frequently replaced when used, so that the efficiency is low, the cutter of the utility model can be replaced, the one-time drilling and chamfering procedures can be completed, and the production efficiency is improved;
2. according to the utility model, through the design of the first-order chamfer and the arc relief angle, the process is transited from rough machining to fine machining through the first-order chamfer, the process is transited from fine machining to the chamfer process through the second-order chamfer, the rigidity of the tool is increased under the condition of ensuring the rigidity through the unique arrangement of the small core thickness of the tool, the chip removal effect is better, the friction interference in the machining process is avoided through the arrangement of the shovel back relief angle, the surface quality of a workpiece is improved, and the service life of the tool body is prolonged to a certain extent.
Drawings
FIG. 1 is a schematic view of the structure of the tool body of the present invention;
FIG. 2 is a schematic view of the bottom edge of the drill according to the present invention;
fig. 3 is a partial enlarged view of fig. 2 of the present invention.
In the figure: 1. a cutter body; 2. drilling a sharp corner; 3. a tooth clearance angle; 4. margin clearing is carried out; 5. leaf width; 6. first-order chamfering; 7. arc relief angle; 8. back clearance angle of the shovel; 9. chip flutes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
a high-efficiency machining stepped drill bit comprises a cutter body 1, wherein the cutter body 1 consists of a rough machining area, a fine machining area and a cutter handle area, the edge length of the rough machining area is set to be 7-7.5cm, the outer diameter of the rough machining area is set to be 3.4cm, the edge length of the fine machining area is set to be 7.2-7.7cm, and the outer diameter of the fine machining area is set to be 3.5 cm;
one end of the rough machining area is provided with a drill point angle 2, the angle of the drill point angle 2 is set to be 124 plus 126 degrees, as the cutting force is mainly concentrated at the drill point part, the drill point angle of the traditional cutter is smaller and easy to wear, and the drill point angle 2 with larger diameter is arranged in the utility model, so that the rigidity of the tip end of the cutter is improved, and the wear resistance of the cutter is improved;
a tooth clearance angle 3 is arranged on the rough machining area, the angle of the tooth clearance angle 3 is set to be 53-57 degrees, the edge clearance 4 is arranged on the rough machining area, the size of the edge clearance 4 is set to be 0.11cm, the blade width 5 is arranged on the rough machining area, the width of the blade width 5 is set to be 0.17cm, and through the design of the larger blade width 5 and the smaller edge clearance 4, the rear cutter face is prevented from scraping the surface of the workpiece, and the surface quality of the workpiece is improved;
the rough machining area is provided with a first-order chamfer 6, the angle of the first-order chamfer 6 is set to be 30 degrees, and the drilling process can be smoothly transited from the rough machining area to the fine machining area through the setting of the first-order chamfer 6 of 30 degrees;
the finishing machining area is provided with an arc relief angle 7, the arc relief angle 7 is set to be a second-order chamfer, the angle of the arc relief angle 7 is set to be 45 degrees, and when the cutter body 1 is used for drilling, a 45-degree arc chamfer can be directly formed on the surface of a workpiece through the 45-degree arc relief angle 7;
be provided with shovel back relief angle 8 on the truing machining region, the angle of shovel back relief angle 8 sets up to 15, has seted up chip groove 9 on the truing machining region, and wherein shovel back relief angle 8 mainly avoids linking up the department to the interference of workpiece surface to through the setting of chip groove 9, improve smear metal exhaust's efficiency.
When the tool is used specifically, when the tool body 1 is used for drilling, cutting force is mainly concentrated on a drill point part, the traditional tool is easy to wear due to the fact that the drill point is small, and the tool is provided with the large drill point 2, so that the rigidity of the tip of the tool is improved, and the wear resistance of the tool is improved;
through the design of great leaf width 5 and less clear limit allowance 4, avoid the back knife face to produce the scraping to the workpiece surface, improve the quality on its surface, through the first-order chamfer 6 of 30 mild transition to the truing stage in rough machining region, through 45 circular arc relief angle 7 direct 45 circular arc chamfer of opening on the workpiece surface, wherein shovel back relief angle 8 mainly avoids linking up the interference of department to the workpiece surface, and through the setting of chip groove 9, improve smear metal exhaust efficiency, and reduce the thick size of afterbody core, under the circumstances of guaranteeing cutter body 1 rigidity, effectual its chip removal effect of having improved, still prolong cutter body 1's life to a certain extent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a high-efficient processing stepped drill bit, includes cutter body (1), its characterized in that: the cutter body (1) consists of a rough machining area, a fine machining area and a cutter handle area;
one end of the rough machining area is provided with a drilling point angle (2), the rough machining area is provided with a tooth clearance angle (3), the rough machining area is provided with a clear margin (4), the rough machining area is provided with a blade width (5), and the rough machining area is provided with a first-order chamfer (6);
be provided with circular arc relief angle (7) on the truing processing region, be provided with shovel back relief angle (8) on the truing processing region, chip groove (9) have been seted up on the truing processing region.
2. The high efficiency stepped drill bit of claim 1, wherein: the blade length of the rough machining area is set to be 7-7.5cm, the outer diameter of the rough machining area is set to be 3.4cm, the blade length of the finishing machining area is set to be 7.2-7.7cm, and the outer diameter of the finishing machining area is set to be 3.5 cm.
3. The high efficiency stepped drill bit of claim 1, wherein: the angle of the drill point angle (2) is set to be 124 degrees and 126 degrees, and the angle of the tooth clearance angle (3) is set to be 53-57 degrees.
4. The high efficiency stepped drill bit of claim 1, wherein: the size of the edge cleaning allowance (4) is set to be 0.11cm, and the width of the leaf width (5) is set to be 0.17 cm.
5. The high efficiency stepped drill bit of claim 1, wherein: the angle of the first-order chamfer (6) is set to be 30 degrees, the arc rear angle (7) is set to be a second-order chamfer, and the angle of the arc rear angle (7) is set to be 45 degrees.
6. The high efficiency stepped drill bit of claim 1, wherein: the angle of the shovel back clearance angle (8) is set to be 15 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122226080.0U CN215431692U (en) | 2021-09-15 | 2021-09-15 | Efficient stepped drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122226080.0U CN215431692U (en) | 2021-09-15 | 2021-09-15 | Efficient stepped drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215431692U true CN215431692U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122226080.0U Active CN215431692U (en) | 2021-09-15 | 2021-09-15 | Efficient stepped drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215431692U (en) |
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2021
- 2021-09-15 CN CN202122226080.0U patent/CN215431692U/en active Active
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