CN211413925U - Reamer bit - Google Patents
Reamer bit Download PDFInfo
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- CN211413925U CN211413925U CN201922370858.8U CN201922370858U CN211413925U CN 211413925 U CN211413925 U CN 211413925U CN 201922370858 U CN201922370858 U CN 201922370858U CN 211413925 U CN211413925 U CN 211413925U
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- reamer
- cutting
- base
- cutting edge
- side wall
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Abstract
The utility model discloses a reamer, which comprises a knife handle, a knife neck and a knife head, wherein one end of the knife neck is fixedly connected with the knife handle, the other end of the knife neck is fixedly connected with the knife head, the knife head is provided with a plurality of mounting surfaces arranged at intervals along the circumferential direction of the knife head, and the mounting surfaces are arranged towards the outer side of the reamer; the reamer also comprises a plurality of blades, each blade is installed on one of the installation surfaces, the blades are made of polycrystalline diamond, each blade comprises a base, the base is installed on the installation surfaces, one side of the base, opposite to the installation surfaces, of the base is convexly provided with a first cutting edge and a second cutting edge, and the protruding direction of the first cutting edge and the protruding direction of the second cutting edge are arranged in an included angle mode. The technical scheme of the utility model aim at solving traditional reamer easy wearing and tearing, the processing stability is poor to and machining efficiency low problem.
Description
Technical Field
The utility model relates to a metal cutting tool field, in particular to reamer.
Background
The reamer is a rotary cutter for processing a metal surface, a milled hole can obtain accurate size and shape, the reamer is mainly used for improving the processing precision of the hole, increasing the smoothness of the hole and reducing the roughness of the surface of the hole, and the reamer is suitable for a finish-processed cutter and has small processing allowance generally. The traditional reamer is easy to wear, poor in processing stability and low in processing efficiency.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reamer aims at solving traditional reamer and easily wears and teares, and processing poor stability to and the problem that machining efficiency is low.
In order to achieve the purpose, the utility model provides a reamer, which comprises a knife handle, a knife neck and a knife head, wherein one end of the knife neck is fixedly connected with the knife handle, the other end of the knife neck is fixedly connected with the knife head, the knife head is provided with a plurality of mounting surfaces arranged at intervals along the circumferential direction of the knife head, and the mounting surfaces are arranged towards the outer side of the reamer;
the reamer also comprises a plurality of blades, each blade is installed on one of the installation surfaces, the blades are made of polycrystalline diamond, each blade comprises a base, the base is installed on the installation surfaces, one side of the base, opposite to the installation surfaces, of the base is convexly provided with a first cutting edge and a second cutting edge, and the protruding direction of the first cutting edge and the protruding direction of the second cutting edge are arranged in an included angle mode.
The utility model discloses an in the embodiment, first cutting edge includes follows first lateral wall, first cutting face and the second lateral wall that tool bit circumference set gradually and connect gradually, first cutting face towards the outside setting of reamer, deviating from of first lateral wall the side of first cutting face with the base is connected, deviating from of second lateral wall the side of first cutting face with the base is connected.
The utility model discloses an in the embodiment, the second cutting edge includes along tool bit circumference sets gradually and the third lateral wall, second cutting face and the fourth lateral wall that connects gradually, the second cutting face towards the outside setting of reamer, the deviation of third lateral wall the side of second cutting face with the base is connected, the deviation of fourth lateral wall the side of second cutting face with the base is connected.
In an embodiment of the present invention, the blade is provided with a chip groove facing the outside of the reamer, the chip groove is formed by the second side wall, the fourth side wall and the base.
In an embodiment of the present invention, an included angle between the protruding direction of the first cutting edge and the protruding direction of the second cutting edge is defined as β, and then β is not less than 20 ° and not more than 120 ° under the condition.
The utility model discloses an embodiment, the base includes top surface and the bottom surface that sets up back to back, the bottom surface with the installation face laminating sets up, the top surface towards the outside setting of reamer, the base is still including locating the bottom surface with first side and second side between the top surface, deviating from of first lateral wall the side of first cutting face connect in first side, first lateral wall with the contained angle setting is personally submitted to first side, deviating from of third lateral wall the side of second cutting face with the contained angle setting is personally submitted to the second side.
In an embodiment of the present invention, an included angle between the first side wall and the first side surface is defined as α, and then the condition of 90 ° or more and 170 ° or less is satisfied.
In an embodiment of the present invention, the width of the first cutting surface is 0.1mm to 1 mm;
and/or the width of the second cutting surface is 0.1 mm-1 mm.
In an embodiment of the present invention, the length of the blade along the axial direction of the tool bit is 2mm to 30 mm.
In an embodiment of the present invention, the handle, the neck and the tool bit are made of tungsten carbide-based cemented carbide.
The technical scheme of the utility model is that the reamer comprises a handle, a neck and a head, one end of the neck is fixedly connected with the handle, the other end is fixedly connected with the head, the handle is stably connected with an external rotating device to drive the neck and the head to rotate stably; the cutter head is provided with a plurality of mounting surfaces arranged at intervals along the circumferential direction, the mounting surfaces face the outer side of the reamer, and the mounting surfaces can be used for mounting the blades so that the blades are more stably and firmly arranged on the mounting surfaces and the stability of the blades is improved; the reamer also comprises a plurality of blades, each blade is arranged on a mounting table, the blades are made of polycrystalline diamond, the hardness of the blades can be effectively improved, so that the blade is more stable and is not easy to wear in the processing process, the blade comprises a base, the base is arranged on the mounting surface, a first cutting edge and a second cutting edge are convexly arranged on the outer side of a lateral reamer of the base, which is opposite to the mounting surface, the protruding direction of the first cutting edge and the protruding direction of the second cutting edge form an included angle, compared with the traditional blade which is only provided with one cutting edge, the utility model discloses a blade has two cutting edges, so that the blade has higher speed and higher precision and efficiency in the cutting edge process, and first cutting edge and second cutting edge are the contained angle setting, can increase the stability of blade to make the difficult wearing and tearing of blade, and reached the good and efficient effect of processing stability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of a reamer of the present invention;
fig. 2 is a left side view of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Knife |
200 | |
| 300 | |
400 | |
| 310 | |
410 | |
| 420 | |
430 | |
| 440 | |
411 | The |
| 412 | |
413 | |
| 414 | |
421 | |
| 422 | |
423 | |
| 431 | Second cutting surface | 432 | |
| 433 | The fourth side wall |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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 efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a reamer.
In the embodiment of the present invention, as shown in fig. 1 and 2, a reamer includes a handle 100, a neck 200 and a tool bit 300, one end of the neck 200 is fixedly connected to the handle 100, the other end is fixedly connected to the tool bit 300, the tool bit 300 is provided with a plurality of mounting surfaces 310 arranged at intervals along the circumferential direction, and the mounting surfaces 310 are arranged facing the outer side of the reamer; the reamer also comprises a plurality of blades 400, each blade 400 is installed on one installation surface 310, the material of the blade 400 is polycrystalline diamond, the blade 400 comprises a base 410, the base 410 is installed on the installation surface 310, a lateral reamer of the installation surface 310, which faces away from the base 410, is convexly provided with a first cutting edge 420 and a second cutting edge 430, the protruding direction of the first cutting edge 420 and the protruding direction of the second cutting edge 430 are arranged in an included angle mode, so that the blades are not easy to wear, and the effects of good processing stability and high efficiency are achieved.
In practical applications, the number of the mounting surfaces 310 may be two, three, or the like, and in the present embodiment, in consideration of stability during machining and improvement of machining precision, it is preferable to provide three mounting surfaces 310, the number of the blades 400 corresponds to the number of the mounting tables, each blade 400 is mounted on one mounting table, each blade 400 includes a first cutting edge 420 and a second cutting edge 430, so that the reamer has six cutting edges in total, and the six cutting edges enable cutting force of the reamer during reaming to be more dispersed, and the cutting process to be more stable.
The blade 400 can be made of various materials as long as the hardness and wear-resistant conditions of the blade 400 are met, in the embodiment, polycrystalline diamond is preferably adopted as the material of the blade 400, the polycrystalline diamond has extremely high hardness and wear resistance, high thermal conductivity and low thermal expansion coefficient, the heat dissipation is fast during cutting, the temperature of the blade 400 during cutting is lower, the thermal deformation is small, the friction coefficient of the polycrystalline diamond is small, the surface roughness of the blade 400 can be reduced, the stability and the service life of the blade 400 are improved, the machining efficiency of the reamer is improved, the mounting modes of the blade 400 and the cutter head 300 are various, fusion welding, pressure welding, brazing and the like can be adopted, the better technical effect is considered, brazing welding is preferably adopted, the brazing can enable the joint surface to be smooth and clean, the air tightness is good, the shape and the size are stable, and the tissue and the performance of a welding piece are not greatly.
The technical scheme of the utility model is that the reamer comprises a handle 100, a neck 200 and a tool bit 300, one end of the neck 200 is fixedly connected with the handle 100, the other end is fixedly connected with the tool bit 300, the handle 100 is used for being stably connected with an external rotating device so as to drive the neck 200 and the tool bit 300 to stably rotate; the cutter head 300 is provided with a plurality of mounting surfaces 310 arranged at intervals along the circumferential direction, the mounting surfaces 310 are arranged facing the outer side of the reamer, and the mounting surfaces 310 can be used for mounting the blades 400, so that the blades 400 are more stably and firmly arranged on the mounting surfaces 310, and the stability of the blades 400 is improved; the reamer also comprises a plurality of blades 400, each blade 400 is arranged on a mounting table, the blades 400 are made of polycrystalline diamond and polycrystalline diamond, the hardness of the blades 400 can be effectively improved, so that the blades 400 are more stable and are not easy to wear in the machining process, each blade 400 comprises a base 410, each base 410 is arranged on the mounting surface 310, a first cutting edge 420 and a second cutting edge 430 are convexly arranged on one side of each base 410, which is opposite to the mounting surface 310, towards the outer side of the reamer, the protruding direction of each first cutting edge 420 and the protruding direction of each second cutting edge 430 form an included angle, compared with the traditional blade 400, only one cutting edge is arranged on each blade 400, the reamer has two cutting edges, the speed of each blade 400 is higher in the cutting edge process, the precision and the efficiency are higher, the included angles of the first cutting edges 420 and the second cutting edges 430 are arranged, the stability of the blades 400 can be improved, and the blades are not easy to wear, and the effects of good processing stability and high efficiency are achieved.
In an embodiment of the present invention, referring to fig. 2, the first cutting edge 420 includes a first side wall 422, a first cutting surface 421 and a second side wall 423 that are sequentially disposed and connected along the circumferential direction of the cutter head 300, the first cutting surface 421 faces the outer side of the reamer, a side of the first side wall 422 that deviates from the first cutting surface 421 is connected to the base 410, and a side of the second side wall 423 that deviates from the first cutting surface 421 is connected to the base 410. The first cutting surface 421 faces the outer side of the reamer, so that the first cutting surface 421 is more convenient to cut, the first side wall 422 is connected with the base 410, and the second side wall 423 is connected with the base 410, so that the stability of the first cutting edge 420 can be further improved.
In an embodiment of the present invention, referring to fig. 2, the second cutting edge 430 includes a third side wall 432, a second cutting surface 431, and a fourth side wall 433 that are sequentially disposed and connected along the circumferential direction of the cutter head 300, the second cutting surface 431 is disposed facing the outer side of the reamer, a side of the third side wall 432 departing from the second cutting surface 431 is connected to the base 410, and a side of the fourth side wall 433 departing from the second cutting surface 431 is connected to the base 410. The second cutting surface 431 is arranged facing the outer side of the reamer, so that the cutting of the second cutting surface 431 is more convenient, the third side wall 432 is connected with the base 410, and the fourth side wall 433 is connected with the base 410, so that the stability of the second cutting edge 430 can be further improved.
In an embodiment of the present invention, referring to fig. 1 and 2, the blade 400 is provided with a chip groove 440 facing the outer side of the reamer, and the chip groove 440 is enclosed by the second side wall 423, the fourth side wall 433 and the base 410. The blade 400 is provided with a chip removal groove 440 facing the outer side of the reamer, the chip removal groove 440 can discharge chips generated during cutting of the blade 400 out of the reamer, the chips are prevented from being stuck on the blade 400, the processing precision and the processing efficiency of the blade 400 are affected, the chip removal groove 440 comprises a second side wall 423 and a fourth side wall 433, the chips of the first cutting edge 420 and the second cutting edge 430 can be discharged from the chip removal groove 440, a certain interval is reserved between every two blades 400, other chips can be discharged from the intervals, the chips are prevented from being stuck on the blade 400, and therefore the effect of improving the processing efficiency and the precision of the reamer is achieved.
In an embodiment of the present invention, referring to fig. 2, an included angle between the protruding direction of the first cutting edge 420 and the protruding direction of the second cutting edge 430 is defined as β, and then the condition 20 ° β is not less than 120 ° is satisfied. Beta is an included angle between the second side wall 423 and the fourth side wall 433, beta cannot be too large or too small, the excessively large beta can cause the chip discharge groove 440 to be too shallow, chips cannot timely get away from the first cutting edge 420 and the second cutting edge 430, a chip part can be adhered to the insert 400, the cutting effect is affected, the excessively small beta can cause the first cutting surface 421 and the second cutting surface 431 to be too flat, the cutting efficiency is reduced, the stability of the insert is not guaranteed, the machining precision is not improved, and therefore beta is limited to be 20-120 degrees.
In an embodiment of the present invention, referring to fig. 2, the base 410 includes a top surface 411 and a bottom surface 412 opposite to each other, the bottom surface 412 is attached to the mounting surface 310, the top surface 411 faces the outer side of the reamer, the base 410 further includes a first side surface 413 and a second side surface 414 between the bottom surface 412 and the top surface 411, a side of the first side wall 422 departing from the first cutting surface 421 is connected to the first side surface 413, the first side wall 422 and the first side surface 413 are disposed at an included angle, and a side of the third side wall 432 departing from the second cutting surface 431 is disposed at an included angle with the second side surface 414. The bottom surface 412 is attached to the mounting surface 310, so that the blade 400 is more stably mounted on the mounting surface 310, the base 410 further comprises a first side surface 413 and a second side surface 414, a side edge of the first side wall 422 departing from the first cutting surface 421 is connected to the first side surface 413 and is arranged at an included angle, a side edge of the third side wall 432 departing from the second cutting surface 431 is arranged at an included angle with the second side surface 414, so that the first cutting surface 421 and the second cutting surface 431 are more stressed and have higher cutting efficiency in the cutting process, and the blade 400 is more stably arranged on the mounting surface 310.
In an embodiment of the present invention, referring to fig. 2, an included angle between the first sidewall 422 and the first side 413 is defined as α, and then the condition of 90 ° < α < 170 ° is satisfied. The included angle between the third side wall 432 and the second side surface 414 is equal to α, α cannot be too small, which would cause the distance between the first side wall 422 and the base 410 to be too short, which is not favorable for the machining of the first cutting edge 420 and the second cutting edge 430, and too large would cause the distance between the first cutting edge 420 and the second cutting edge 430 to be too short, which would affect the machining precision, so α is limited to 90 ° to 170 °.
In an embodiment of the present invention, referring to fig. 2, the width of the first cutting surface 421 is 0.1mm to 1 mm;
and/or the width of the second cutting surface 431 is 0.1 mm-1 mm. The widths of the first and second cutting surfaces 421 and 431 cannot be too wide, so that the excessively wide machining accuracy is affected, the machined product is excessively rough, and the widths of the first and second cutting surfaces 421 and 431 are limited to 0.1 to 1mm in order to ensure the machining accuracy.
In an embodiment of the present invention, referring to fig. 1, the length of the blade 400 along the axial direction of the cutter head 300 is 2mm to 30 mm. Since the length of the insert 400 in the axial direction of the cutter head 300 cannot exceed the axial length of the cutter head 300 and is too short, cutting efficiency is deteriorated, the length of the insert 400 in the axial direction of the cutter head 300 is limited to 2mm to 30 mm.
In an embodiment of the present invention, referring to fig. 1, the material of the tool shank 100, the tool neck 200 and the tool bit 300 is tungsten carbide-based cemented carbide. The tool holder 100, the tool neck 200, and the tool tip 300 may be made of various materials, such as tungsten-cobalt hard alloy, tungsten-titanium-niobium hard alloy, etc., and in consideration of economic cost and hardness, tungsten carbide-based hard alloy is preferably used, which has high hardness and low price, and is suitable for mass production in factories.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A reamer is characterized by comprising a cutter handle, a cutter neck and a cutter head, wherein one end of the cutter neck is fixedly connected with the cutter handle, the other end of the cutter neck is fixedly connected with the cutter head, the cutter head is provided with a plurality of mounting surfaces arranged at intervals along the circumferential direction of the cutter head, and the mounting surfaces are arranged towards the outer side of the reamer;
the reamer also comprises a plurality of blades, each blade is installed on one of the installation surfaces, the blades are made of polycrystalline diamond, each blade comprises a base, the base is installed on the installation surfaces, one side of the base, opposite to the installation surfaces, of the base is convexly provided with a first cutting edge and a second cutting edge, and the protruding direction of the first cutting edge and the protruding direction of the second cutting edge are arranged in an included angle mode.
2. The reamer of claim 1, wherein the first cutting edge comprises a first side wall, a first cutting surface and a second side wall which are sequentially arranged along the circumferential direction of the cutter head and are sequentially connected, the first cutting surface is arranged to face the outer side of the reamer, the side of the first side wall facing away from the first cutting surface is connected with the base, and the side of the second side wall facing away from the first cutting surface is connected with the base.
3. The reamer of claim 1, wherein the second cutting edge comprises a third side wall, a second cutting surface and a fourth side wall which are sequentially arranged along the circumferential direction of the cutter head and are sequentially connected, the second cutting surface is arranged to face the outer side of the reamer, the side of the third side wall facing away from the second cutting surface is connected with the base, and the side of the fourth side wall facing away from the second cutting surface is connected with the base.
4. The reamer of claim 1 wherein the blades are provided with flutes directed toward the exterior of the reamer, the flutes being defined by the second and fourth side walls and the base.
5. The reamer of claim 3 wherein the condition of 20 ° β 120 ° is satisfied if the included angle between the direction of projection of the first cutting edge and the direction of projection of the second cutting edge is defined as β.
6. The reamer of claim 3, wherein the base comprises a top surface and a bottom surface which are oppositely arranged, the bottom surface is attached to the mounting surface, the top surface is arranged to face the outer side of the reamer, the base further comprises a first side surface and a second side surface which are arranged between the bottom surface and the top surface, the side of the first side wall which deviates from the first cutting surface is connected to the first side surface, the first side wall and the first side surface are arranged at an included angle, and the side of the third side wall which deviates from the second cutting surface and the second side surface are arranged at an included angle.
7. The reamer of claim 6 wherein the condition of 90 ° α 170 ° is satisfied if the angle between the first side wall and the first side surface is defined as α.
8. The reamer of claim 3 wherein the first cutting surface has a width of 0.1mm to 1 mm;
and/or the width of the second cutting surface is 0.1 mm-1 mm.
9. The reamer of any one of claims 1 to 8 wherein the length of the blades in the axial direction of the cutter head is from 2mm to 30 mm.
10. The reamer of any one of claims 1 to 8 wherein the shank, the neck and the cutting head are all of tungsten carbide based cemented carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370858.8U CN211413925U (en) | 2019-12-24 | 2019-12-24 | Reamer bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370858.8U CN211413925U (en) | 2019-12-24 | 2019-12-24 | Reamer bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211413925U true CN211413925U (en) | 2020-09-04 |
Family
ID=72254595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922370858.8U Active CN211413925U (en) | 2019-12-24 | 2019-12-24 | Reamer bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211413925U (en) |
-
2019
- 2019-12-24 CN CN201922370858.8U patent/CN211413925U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201120 Address after: Room 301, building F, Longjing science and Technology Park, 335 Bulong Road, Ma'antang community, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Muji superhard Technology Co., Ltd Address before: 518000 room 503, building 4, Shiji Huating, Longhua Town, Bao'an District, Shenzhen City, Guangdong Province Patentee before: Yue Guohan |