CN114290012A - Preparation method of porous circular cutter with milling and grinding functions - Google Patents
Preparation method of porous circular cutter with milling and grinding functions Download PDFInfo
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- CN114290012A CN114290012A CN202111654339.XA CN202111654339A CN114290012A CN 114290012 A CN114290012 A CN 114290012A CN 202111654339 A CN202111654339 A CN 202111654339A CN 114290012 A CN114290012 A CN 114290012A
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Abstract
The invention discloses a preparation method of a porous circular knife with milling and grinding functions, which comprises the following three steps: s1, designing the structure and the size of the circular knife; s2, manufacturing a circular knife primary product; and S3, manufacturing the final finished product porous circular knife. According to the invention, the 3D additive printing technology is utilized, the circular knife can be rapidly manufactured without a die, the precision and the production efficiency of the circular knife are effectively improved, the manufacturing cost of the circular knife is reduced, the service life of the circular knife is effectively prolonged through mixing of the short-cut lignocellulose particles and the alloy microparticles, the burning loss of the short-cut lignocellulose particles is automatically eliminated by utilizing high temperature, irregular pores are left on the surface of the circular knife, the burning prevention effect of the circular knife is ensured, the service life of the circular knife is effectively improved, and meanwhile, the effect and the efficiency of the circular knife for processing the grinding sheet groove die are effectively improved.
Description
Technical Field
The invention belongs to the technical field of grinding sheet groove processing, and particularly relates to a preparation method of a porous circular cutter with milling and grinding functions.
Background
The grooves of the casting grinding plate groove need to have draft angles, namely demolding draft angles, which are designed on two sides of a die cavity for facilitating demolding, and the orientation of the demolding draft angles is determined according to the inner and outer size of the grinding plate groove mold. Vertical milling cutter is mostly adopted in traditional abrasive disc groove processing, because vertical milling cutter process velocity is slow, is unfavorable for large-scale production, and vertical milling cutter is a style of calligraphy vertical structure moreover, breaks very easily, so can bring certain economic loss when abrasive disc groove mold processing man-hour.
At present, the disc milling cutter is used for processing the grinding disc groove die, and due to the fact that the disc milling cutter can overheat and burn a cutter in the processing process, the cutter loss is serious, economic loss can be caused, the disc milling cutter is provided with a front blade and a rear blade, the rotating direction cannot be changed, the disc milling cutter needs to be replaced regularly during processing, the cutting efficiency is seriously influenced, and the processing and production cost is increased.
At present, a plurality of irregular holes are machined in the surface of a disc milling cutter to prevent the phenomenon of overheating and burning, but the disc milling cutter still cannot change the rotating direction, so that the cutting efficiency is low, the holes are formed through machining, the production cost is high, the service life is short, the disc milling cutter does not have draft inclination, the required draft inclination of a grinding sheet groove die cannot be formed at one time, and the machining effect and the machining efficiency are low. For example, chinese patent publication No. CN201317056Y, published 2008, 12.22.a, discloses a porous saw blade with oblique teeth, which herein proposes "comprising a base body and a cutter head, characterized in that: the base body is a thin circular ring body, a bearing hole for mounting a bearing is arranged at the center of the base body, and the surface of the base body is provided with a plurality of circular holes with different sizes; the cutter head is a circular ring body and is fixedly attached to the outer edge of the circular ring of the base body; the thickness of the tool bit is larger than that of the base body; the tool bit ring two sides comprise a plurality of skewed teeth of parallel arrangement, the skewed tooth of every side of tool bit is evenly separated by the wedge groove, the wedge groove embedding tool bit another side skewed tooth bottom of tool bit one side. "this prior art's base member surface has a plurality of circular ports of different sizes, though avoided the phenomenon of overheated fever sword, but prior art's circular port is the machine tooling and forms, and the cost is higher, owing to there is the setting of circular port, makes the rigidity of base member reduce to some extent, has shortened the life of base member to influence machining effect and efficiency. For this reason, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a preparation method of a porous circular cutter with milling and grinding functions, and aims to solve the problems of high production cost, short service life and poor processing effect and efficiency of the existing-stage disc milling cutter in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a porous circular knife with milling and grinding functions is characterized by comprising the following specific steps:
s1, the structure of the circular knife is set to be a blade and a cutting edge, the blade is arranged in the middle of the circular knife, the cutting edge is arranged at the end of the circular knife, the cutting edge is radially arranged on the outer edge of the blade in an isosceles triangle shape at equal intervals, an arc-shaped groove used for dispersing machining scraps is arranged at the bottom between the cutting edge and the cutting edge, the cutting edge comprises a knife head in a straight-line structure and a knife rest used for supporting the knife head, the knife rest is arranged on two sides of the knife head in an inclined mode of 5-90 degrees, the length of the knife head is 1-10 mm, the thickness of the blade is 2-20 mm, and the structure and the size of the circular knife are input to a 3D printer through three-dimensional drawing forming;
s2, mixing and stirring alloy microparticles with the particle size of 10-1000 microns and short-cut lignocellulose particles accounting for 5-10% of the weight of the alloy microparticles, wherein the alloy microparticles are required by the circular knife, stirring for 5-30 minutes, and then placing the mixture on a 3D printer for printing to obtain a circular knife primary product;
s3, placing the primary circular knife in a vacuum furnace, burning the short-cut lignocellulose particles at the temperature of 1380-1418 ℃, solidifying the alloy microparticles, keeping the temperature for 20-40 minutes, cooling to the temperature of 250-350 ℃, taking out, air cooling to the room temperature, and polishing to obtain the final finished porous circular knife.
Further, the alloy microparticles comprise the following components in percentage by weight: 0.21-0.26% of C, 85-88% of W, 2.2-2.9% of Co, Y2O31.2-3.6%, 20.8-3.5% of CeO20, 2.5-3.50% of Ni, 0.9-1.3% of Si, 1.3-1.5% of Mn, 0.25-0.35% of Mo, and the balance of Fe.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the 3D additive printing technology is utilized, the circular knife can be rapidly manufactured without a die, the precision and the production efficiency of the circular knife are effectively improved, the manufacturing cost of the circular knife is reduced, the service life of the circular knife is effectively prolonged through mixing of the short-cut lignocellulose particles and the alloy microparticles, the burning loss of the short-cut lignocellulose particles is automatically eliminated by utilizing high temperature, irregular pores are left on the surface of the circular knife, the burning prevention effect of the circular knife is ensured, the service life of the circular knife is effectively improved, and meanwhile, the effect and the efficiency of the circular knife for processing the grinding sheet groove die are effectively improved.
2. According to the circular knife, the blades are radially arranged in an isosceles triangle shape at equal intervals, so that the front blade and the rear blade of the circular knife can be effectively prevented from being divided, the rotating direction of the circular knife can be changed randomly according to a processed die, the circular knife does not need to be replaced, the processing efficiency of the circular knife is greatly improved, the circular knife is not easy to break, the processing effect of the circular knife is guaranteed, and the service life of the circular knife is effectively prolonged by more than two times.
3. The circular knife has the dual functions of milling and grinding, and the knife rest is arranged by inclining the two sides of the knife head by 5-90 degrees, so that the circular knife has the draft angle, and the drawing of a sand mold for casting a grinding sheet is facilitated, thereby ensuring the one-time forming rate of the processing of the grinding sheet groove die, effectively improving the smoothness and the precision of the circular knife processing, effectively improving the effect and the efficiency of the circular knife processing, and ensuring the processing frequency of the circular knife.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the structure of area A in FIG. 1;
fig. 3 is a side cross-sectional schematic view of the present invention.
Wherein: 1. a circular knife; 2. a blade; 3. a blade; 4. an arc-shaped groove; 5. a circular hole; 6. a cutter head; 7. a tool holder; 8. and (4) pores.
Detailed Description
The following examples are intended to further illustrate the invention and are not intended to limit the application of the invention.
Example 1:
firstly, selecting 0.23% of C, 86% of W, 2.5% of Co, Y2O31.6%, CeO22.5%, 2.9% of Ni, 0.93% of Si, 1.35% of Mn, 0.29% of Mo and the balance of Fe, and preparing alloy microparticles by a smelting or powder metallurgy method;
then, the alloy microparticles are selected to have a particle size of 200-300 microns according to the porosity requirement, and then chopped lignocellulose particles accounting for 6 wt% of the alloy microparticles are calculated by using an electronic scale to serve as a manufacturing material of the circular knife 1, before the alloy microparticles are used, cleaning dust needs to be firstly removed, then water is thrown off by a centrifugal machine, then drying is carried out, and the drying is kept, and the same alloy microparticles also need to be polished and dried before being used, so that the alloy microparticles and the chopped lignocellulose particles can meet the requirement of 3D printing.
As shown in fig. 1-3, firstly, the structure of a circular knife 1 is designed in a three-dimensional drawing tool, and is marked with dimensions, the structure of the circular knife 1 is provided with a blade 2 and a blade 3, the blade 2 is arranged in the middle of the circular knife 1, the middle of the blade 2 is provided with a circular hole 5 for a bearing to pass through, the blade 3 is arranged at the end of the circular knife 1, the blade 3 is radially and equidistantly arranged on the outer edge of the blade 2 in an isosceles triangle shape, an arc-shaped groove 4 for dispersing processing scraps is arranged at the bottom between the blade 3 and the blade 3, the blade 3 comprises a knife head 6 for processing a linear structure of a grinding sheet groove die and a knife rest 7 for supporting the knife head 6, the knife rest 7 is obliquely arranged at 60 degrees on two sides of the knife head 6 in the linear structure, so that the circular knife 1 has a draft slope for casting grinding sheet sand mold, thereby ensuring the one-time molding rate of the processing of the grinding sheet groove die, the length of the cutter head 6 is 5 mm, the thickness of the blade 2 is 15 mm, and the designed structure and size of the circular cutter 1 are input to a 3D printer; then, placing the prepared manufacturing material on a 3D printer, and printing a circular knife 1 primary product by using a 3D additive printing technology; and then placing the primary circular knife 1 into a vacuum furnace and heating to the temperature of 1380-1418 ℃ to solidify the primary circular knife 1, wherein the short-cut lignocellulose particles are burnt and lost along with high temperature in the solidification process to automatically form pores 8, meanwhile, the alloy microparticles are solidified at the temperature of 1380-1418 ℃, after the temperature is kept for 20-40 minutes, the primary circular knife 1 is cooled to the temperature of 250-350 ℃ along with the vacuum furnace, then the primary circular knife 1 is taken out to be air-cooled to the room temperature, and finally, simple polishing is carried out to obtain the final finished porous circular knife 1, wherein the diameter of the pores 8 on the porous circular knife 1 is 300 microns, and the porosity is 28%.
The working principle and the using method flow of the invention are as follows: as shown in fig. 1-3, when the circular knife 1 is required to process the groove of the grinding sheet die, an operator only needs to penetrate the bearing through the circular hole 5 and then control the blade 3 of the circular knife 1 to process the groove of the grinding sheet die, a large amount of heat and processed chips are generated on the blade 3 in the processing process, and at the moment, the heat on the blade 3 can be dispersed only through the arc-shaped groove 4 and dissipated, so that the groove processing efficiency of the grinding sheet die is effectively improved;
in order to better achieve the cooling effect, the cooling liquid is sprayed on the blade 2 and the blade 3 to cool in the high-speed processing and running process, at the moment, the cooling liquid can be contained in the hole 8, the cooling effect of the blade 2 and the blade 3 can be greatly improved, so that the phenomenon of burning is effectively avoided, the service life of the circular knife is prolonged by 2.2 times compared with that of a hole-free circular knife, and meanwhile, the two-grade smoothness of a grinding sheet groove die for processing the circular knife and the processing efficiency of 58% are effectively improved;
when the circular knife 1 rotates clockwise to work, the right blade becomes dull, and the left blade is still sharp, the circular knife 1 does not need to be changed into a counterclockwise direction to work, and the circular knife can be continuously used; when the circular knife 1 rotates anticlockwise to work, the left edge becomes dull, and the right edge becomes sharp due to the self-sharpening effect, the circular knife 1 does not need to be changed, and can be used again only by changing the circular knife 1 to work in the clockwise rotation direction; by analogy, the circular knife 1 can be repeatedly used, and the service life of the circular knife 1 can be prolonged by more than 2 times.
Example 2:
in this embodiment, the preparation method of the porous circular knife 1 is the same as that of embodiment 1, and only the mixture ratio of the manufacturing materials is inconsistent, which results in inconsistency in the diameter and porosity of the pores 8, that is: the alloy micro-particles are selected with the particle size of 100-150 microns according to the porosity requirement, and then 7 percent of chopped lignocellulose particles accounting for the weight percent of the alloy micro-particles are calculated by using electronic scale metering and weighing to serve as the manufacturing material of the circular knife 1, the diameter of the pores 8 on the prepared porous circular knife 1 is 150-micron, and the porosity is 35 percent.
Similarly, the method of using the porous circular knife 1 in this embodiment is the same as that in embodiment 1, and only the porosity is inconsistent, which results in inconsistent service life and processing efficiency, namely: when the porosity is improved to 32%, the service life of the grinding disc groove die is prolonged by 2.4 times compared with that of a round knife without a hole, and meanwhile, the two-grade smooth finish of the grinding disc groove die processed by the round knife and the processing efficiency of 65% are effectively improved.
Example 3:
in this embodiment, the preparation method of the porous circular knife 1 is the same as that of embodiment 1, and only the mixture ratio of the manufacturing materials is inconsistent, which results in inconsistency in the diameter and porosity of the pores 8, that is: the alloy micro-particles are selected with a particle size of 400-550 microns according to the porosity requirement, and 9 wt% of the chopped lignocellulose particles accounting for the alloy micro-particles are calculated by electronic scale weighing and serve as the manufacturing material of the circular knife 1, the diameter of the pores 8 on the prepared porous circular knife 1 is 400-550 microns, and the porosity is 46%.
Similarly, the method of using the porous circular knife 1 in this embodiment is the same as that in embodiment 1, and only the porosity is inconsistent, which results in inconsistent service life and processing efficiency, namely: when the porosity is improved to 46%, the service life of the grinding disc groove die is prolonged by 2.1 times compared with that of a round knife without a hole, and meanwhile, the two-grade smoothness of the grinding disc groove die processed by the round knife and the processing efficiency of 80% are effectively improved.
Claims (10)
1. A preparation method of a porous circular knife with milling and grinding functions is characterized by comprising the following specific steps:
s1, inputting the structure and the size of the circular knife to a 3D printer after three-dimensional drawing and forming;
s2, mixing and stirring the short lignocellulose particles and the alloy microparticles required by the circular knife uniformly, and then placing the mixture on a 3D printer for printing to obtain a circular knife primary product;
s3, placing the circular knife primary product into a vacuum furnace to burn the short-cut lignocellulose particles, solidifying the alloy microparticles, cooling, taking out, air-cooling to room temperature, and polishing to obtain the final finished product of the porous circular knife.
2. The method of claim 1, wherein the circular cutter comprises a blade and an edge, the blade is disposed at the middle of the circular cutter, and the edge is disposed at the end of the circular cutter in S1.
3. The method for preparing the porous circular cutter with the milling and grinding functions as claimed in claim 2, wherein the cutting edges are radially arranged on the outer side edge of the blade in an isosceles triangle shape at equal intervals, and an arc-shaped groove for dispersing processing chips is arranged at the bottom between the cutting edges.
4. The method for preparing a porous circular cutter with milling and grinding functions as claimed in claim 2 or 3, wherein the cutting edge comprises a cutter head with a straight-line structure and a cutter holder for supporting the cutter head, the cutter holder is arranged on two sides of the cutter head at an inclination of 5-90 degrees, the length of the cutter head is 1-10 mm, and the thickness of the blade is 2-20 mm.
5. The method for preparing the porous circular cutter with the milling and grinding functions as claimed in claim 1, wherein in S2, the chopped lignocellulose particles account for 5-10% of the alloy microparticles in percentage by weight.
6. The method for preparing the porous circular knife with the milling and grinding functions as claimed in claim 1 or 5, wherein the grain diameter of the alloy microparticles is 10-1000 microns.
7. The method for preparing the porous circular cutter with the milling and grinding functions as claimed in claim 6, wherein the alloy microparticles comprise the following components in percentage by weight: 0.21-0.26% of C, 85-88% of W, 2.2-2.9% of Co, Y2O31.2-3.6%, 20.8-3.5% of CeO20, 2.5-3.50% of Ni, 0.9-1.3% of Si, 1.3-1.5% of Mn, 0.25-0.35% of Mo, and the balance of Fe.
8. The method for preparing a porous circular knife with milling and grinding functions as claimed in claim 1, wherein in S2, the stirring time is 5-30 minutes.
9. The method as claimed in claim 1, wherein the heating temperature of the vacuum furnace in S3 is 1380-1418 ℃, and the holding time is 20-40 minutes.
10. The method for preparing a porous circular knife with milling and grinding functions as claimed in claim 1, wherein the cooling temperature in S3 is 250-350 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111654339.XA CN114290012A (en) | 2021-12-31 | 2021-12-31 | Preparation method of porous circular cutter with milling and grinding functions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111654339.XA CN114290012A (en) | 2021-12-31 | 2021-12-31 | Preparation method of porous circular cutter with milling and grinding functions |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207616416U (en) * | 2017-12-21 | 2018-07-17 | 河北柯能工具有限公司 | Dual-purpose type diamond disk |
| CN112404445A (en) * | 2020-08-19 | 2021-02-26 | 赵远云 | Preparation method and application of high-purity powder material and two-phase powder material |
| CN112692956A (en) * | 2020-12-28 | 2021-04-23 | 华侨大学 | Slurry direct-writing forming method of honeycomb-shaped diamond tool |
| CN113021204A (en) * | 2021-04-08 | 2021-06-25 | 华侨大学 | Porous ultrathin grinding wheel for cutting chip and preparation method thereof |
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2021
- 2021-12-31 CN CN202111654339.XA patent/CN114290012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207616416U (en) * | 2017-12-21 | 2018-07-17 | 河北柯能工具有限公司 | Dual-purpose type diamond disk |
| CN112404445A (en) * | 2020-08-19 | 2021-02-26 | 赵远云 | Preparation method and application of high-purity powder material and two-phase powder material |
| CN112692956A (en) * | 2020-12-28 | 2021-04-23 | 华侨大学 | Slurry direct-writing forming method of honeycomb-shaped diamond tool |
| CN113021204A (en) * | 2021-04-08 | 2021-06-25 | 华侨大学 | Porous ultrathin grinding wheel for cutting chip and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李志宏: "《陶瓷磨具制造》", 中国标准出版社, pages: 52 - 53 * |
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