CN112428028B - Auxiliary blade processing method for plastic product drilling processing drill bit - Google Patents
Auxiliary blade processing method for plastic product drilling processing drill bit Download PDFInfo
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- CN112428028B CN112428028B CN202011313241.3A CN202011313241A CN112428028B CN 112428028 B CN112428028 B CN 112428028B CN 202011313241 A CN202011313241 A CN 202011313241A CN 112428028 B CN112428028 B CN 112428028B
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- edge
- avoidance
- drill bit
- drilling
- cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
- B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills
Abstract
The invention relates to a method for processing a secondary blade of a drill for plastic product drilling, belonging to the field of machining. Grinding the triangular connecting part of the auxiliary cutting edge and the main cutting edge by a drilling drill according to an angle of 118 degrees; to grind an avoidance surface; therefore, the problems that the cutting linear speed of the secondary cutting edge of the drill bit is higher than that of the main cutting edge, the cutting amount at the hole wall is large, the thickness of the cutting chip is thicker than that of the hole center, and the generated hole wall is strained and deformed, cannot be positioned, is broken by the drill bit, is collided, is thrown and the like under the action of toughness of the plastic product during the drilling process of the existing plastic product are solved.
Description
Technical Field
The invention relates to a method for processing a secondary blade of a drill for plastic product drilling, belonging to the field of machining.
Background
When plastic products are drilled and processed, the cutting linear speed of the secondary cutting edge of the drill bit is higher than that of the main cutting edge, so that the cutting amount at the hole wall is large, the thickness of the cutting cuttings is thicker than that at the hole center, and under the toughness dragging action of the plastic products, the dangers of hole wall scratching deformation, incapability of positioning, drill bit breakage, material collision, material throwing and the like exist, so that a great deal of inconvenience is brought to the drilling and processing of the plastic products. To the above-mentioned problem, the current solution is to make special fixture to solve the situation that the pore wall strains deformation, can't fix a position, drill bit rupture, hits the material, gets rid of the material through increasing the centre gripping dynamics, this kind of mode can play certain effect, but can't stop above-mentioned danger completely, and can increase manufacturing cost, reduce work efficiency. Therefore, there is a need for improvement thereof.
Disclosure of Invention
The invention aims to: the method for processing the auxiliary cutting edge of the drill bit for drilling and processing the plastic products can effectively solve the problems that the conventional plastic products have the risks of hole wall strain deformation, incapability of positioning, drill bit breakage, material collision, material throwing and the like because the cutting linear speed of the auxiliary cutting edge of the drill bit is higher than that of the main cutting edge during drilling and processing.
The technical scheme of the invention is as follows:
a method for processing a secondary blade of a drill for drilling plastic products is characterized in that: it comprises the following steps:
1) grinding the triangular connecting part of the auxiliary cutting edge and the main cutting edge by the drilling drill bit according to an angle of 118 degrees; to grind an avoidance surface;
2) when the triangular connection part of the auxiliary blade and the main blade is ground to form a triangular plane, the avoidance surface is primarily ground; the avoidance surface which is primarily ground comprises an avoidance edge a, an avoidance edge b and an avoidance edge c;
3) aligning the avoiding edge a of the avoiding surface with a grinding wheel of a knife grinder to continuously grind, so that the avoiding edge a of the avoiding surface forms a step shape; namely, the grinding of the avoiding surface is finished, and the secondary cutting edge of the drill bit is processed and finished.
The drilling processing drill bit is a universal twist drill bit.
The avoiding surface is a plane or a plane with small curvature and approximate curvature.
The length of the avoiding edge b is larger than that of the avoiding edge c and the avoiding edge a.
The length of the avoiding side a is 1/6-1/5 of the diameter of the drill bit for drilling.
The invention has the beneficial effects that:
the drill for drilling and processing after treatment has the advantages of simple structure and good practicability, and solves the problems that the cutting linear speed of the auxiliary cutting edge of the drill is higher than that of the main cutting edge, so that the cutting amount at the hole wall is large, the thickness of a drilling chip is thicker than that of the hole center, and the generated hole wall is strained and deformed, cannot be positioned, and is broken, collided and thrown under the action of the toughness of a plastic product.
Drawings
FIG. 1 is a schematic view of a 118 angle abrasive drilling bit of the present invention;
FIG. 2 is a schematic view of an abraded avoidance surface of the present invention;
fig. 3 is an enlarged schematic view at a in fig. 2.
In the figure: 1. Drilling a drill bit; 2. a secondary blade; 3. an avoidance surface; 4. avoiding the edge a; 5. avoiding the edge b; 6. avoiding the edge c; 7. knife grinder emery wheel.
Detailed Description
The method for processing the auxiliary cutting edge of the drill for drilling the plastic products comprises the following steps:
grinding the triangular connection part of the auxiliary cutting edge 2 and the main cutting edge by the drilling drill bit 1 according to an angle of 118 degrees; the drilling bit 1 is a universal twist drill; to grind the avoidance surface 3; when the triangular connection part of the auxiliary blade 2 and the main blade is ground to form a triangular plane, the avoiding surface 3 is primarily ground; the avoiding surface 3 is a plane or a plane with approximate small curvature.
The avoidance surface 3 which is finished by primary grinding comprises an avoidance edge a4, an avoidance edge b5, an avoidance edge c6 and a grinding wheel; the length of the avoidance edge b5 is greater than the avoidance edge c6 and the avoidance edge a 4. The length of the avoiding side a4 is 1/6-1/5 of the diameter of the drilling bit 1.
Aligning the avoiding edge a4 of the avoiding surface with a grinding wheel 7 of the knife grinder to continuously grind, so that the avoiding edge a4 of the avoiding surface 3 forms a step shape; the grinding of the avoiding surface 3 is completed, namely the processing of the secondary blade 2 of the drilling bit 1 is completed.
The drill bit 1 for drilling processing after treatment has simple structure and good practicability, and is ground by the avoiding surface 3; the cutting linear speed of the auxiliary blade 2 is reduced; the invention solves the problems that the cutting linear speed of the secondary blade of the drill bit is higher than that of the main blade, so that the cutting amount at the hole wall is large, the thickness of the drill cuttings is thicker than that at the hole center, and the generated hole wall is strained and deformed, cannot be positioned, and is broken, collided and thrown under the action of the toughness of the plastic product. The auxiliary cutting edge treatment of the invention does not damage the drilling bit 1, and the grinding and removing of the avoiding surface 3 can still be used as a common bit. Meanwhile, the invention is not only limited to the drilling operation of plastic parts, but also can be used for the drilling operation of non-metal parts such as rubber parts, PCB plates and the like.
Claims (1)
1. The technical scheme of the invention is as follows:
a method for processing a secondary blade of a drill for drilling plastic products is characterized in that: it comprises the following steps:
1) grinding the triangular connecting part of the auxiliary cutting edge (2) and the main cutting edge by the drilling drill bit (1) according to an angle of 118 degrees; to grind an avoidance surface (3); the drilling processing drill bit (1) is a universal twist drill bit, and the avoidance surface (3) is a plane or a plane with approximate small curvature;
2) when the triangular connection part of the auxiliary blade (2) and the main blade is ground to form a triangular plane, the avoidance surface (3) is primarily ground; the avoidance surface (3) which is subjected to primary grinding comprises an avoidance edge a (4), an avoidance edge b (5) and an avoidance edge c (6); the length of the avoidance edge b (5) is greater than that of the avoidance edge c (6) and the avoidance edge a (4), and the length of the avoidance edge a (4) is 1/6-1/5 of the diameter of the drilling bit (1);
3) aligning the avoiding edge a (4) of the avoiding surface (3) with a grinding wheel (7) of the knife grinder to continuously grind, so that the avoiding edge a (4) of the avoiding surface (3) forms a step shape; namely, the avoidance surface (3) is ground to finish-the auxiliary blade of the drill bit is drilled to finish processing, and the avoidance surface (3) is ground; so as to reduce the cutting linear speed of the auxiliary blade (2); the problems that when an existing plastic product is drilled and processed, due to the fact that the cutting linear speed of the secondary cutting edge of the drill bit is higher than that of the main cutting edge, the cutting amount of a hole wall is large, the thickness of a drilling cutting is thicker than that of a hole center, and under the action of toughness of the plastic product, the generated hole wall is strained and deformed, cannot be positioned, and the drill bit is broken, collided and thrown are solved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313241.3A CN112428028B (en) | 2020-11-20 | 2020-11-20 | Auxiliary blade processing method for plastic product drilling processing drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313241.3A CN112428028B (en) | 2020-11-20 | 2020-11-20 | Auxiliary blade processing method for plastic product drilling processing drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112428028A CN112428028A (en) | 2021-03-02 |
| CN112428028B true CN112428028B (en) | 2022-06-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313241.3A Active CN112428028B (en) | 2020-11-20 | 2020-11-20 | Auxiliary blade processing method for plastic product drilling processing drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112428028B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10208630A1 (en) * | 2001-10-12 | 2003-04-24 | Hawera Probst Gmbh | drilling |
| EP1687126B1 (en) * | 2003-11-17 | 2007-07-25 | Robert Bosch Gmbh | Drilling and/or chiselling tool |
| DE102008023856A1 (en) * | 2008-05-16 | 2009-11-19 | Gühring Ohg | Multi-bladed solid carbide drilling tool |
| CN103906592B (en) * | 2011-11-04 | 2016-03-16 | Osg株式会社 | drill bit |
| CN103692177B (en) * | 2013-06-14 | 2016-01-13 | 哈尔滨汽轮机厂有限责任公司 | A kind of extension drill processing method |
| CN204108410U (en) * | 2014-09-04 | 2015-01-21 | 艾森文具用品（太仓）有限公司 | One is used for drilling magnadure aperture flat drill bit |
-
2020
- 2020-11-20 CN CN202011313241.3A patent/CN112428028B/en active Active
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| CN112428028A (en) | 2021-03-02 |
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