CN114290533B - Honing lathe tool for machining surface roughness of aviation graphite sleeve and use method - Google Patents
Honing lathe tool for machining surface roughness of aviation graphite sleeve and use method Download PDFInfo
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- CN114290533B CN114290533B CN202111658092.9A CN202111658092A CN114290533B CN 114290533 B CN114290533 B CN 114290533B CN 202111658092 A CN202111658092 A CN 202111658092A CN 114290533 B CN114290533 B CN 114290533B
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- cutter
- honing
- main body
- cutter bar
- bar main
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 45
- 239000010439 graphite Substances 0.000 title claims abstract description 45
- 238000003754 machining Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000003746 surface roughness Effects 0.000 title claims abstract description 13
- 239000010730 cutting oil Substances 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 10
- 239000010432 diamond Substances 0.000 claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 17
- 239000011159 matrix material Substances 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 4
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention belongs to the technical field of aviation, and relates to a honing lathe tool for machining surface roughness of an aviation graphite sleeve and a use method thereof, the honing lathe tool comprises a cutter bar main body, wherein a cutter head of the cutter bar main body is welded with a substrate to form a cutting edge, a diamond coating is arranged on the substrate, a cutter head avoiding part is arranged on the cutter head of the cutter bar main body, and an included angle formed by the cutter head of the cutter bar main body is 70 degrees. According to the invention, a honing cutter is innovatively developed in a mode of matching the turning tool with the honing cutter, so that the high-efficiency, stable and rapid processing of the aviation graphite sleeve can be realized; the 1200-mesh diamond honing strip is used, and the rotating speed of the main shaft of the part is adjusted to 800r/min, so that the surface roughness of the machined graphite sleeve can be effectively improved; the spraying pressure of the cutting oil is above 2MPa, so that graphite scraps generated in the machining process can be effectively washed out; the surface of the graphite sleeve is cleaned by cutting oil under high pressure on a machine tool, so that surface impurities are removed, and the surface of the graphite sleeve is prevented from being scratched in the follow-up circulation and detection processes.
Description
Technical Field
The invention belongs to the technical field of aviation, and relates to a honing lathe tool for machining surface roughness of an aviation graphite sleeve and a use method thereof.
Background
At present, a series of aluminum alloy, stainless steel and high-temperature alloy seat parts are produced in a factory, a graphite sleeve is required to be assembled after part of parts are machined, then an inner hole of the graphite sleeve is machined, the tolerance of the inner hole is +/-0.005 mm, and the roughness of the inner hole is Ra0.2um.
The graphite sleeve is a graphite material, is one of carbon crystal minerals, has a hexagonal plate shape, is generally flaky or scaly, is soft in texture, is brittle, is easy to break during machining, and has roughness which is difficult to reach more than Ra0.2um.
The diameter phi of the inner hole of the graphite sleeve is 12.7mm, the diameter of a cutter used in machining cannot exceed 12mm, and the inner hole is provided with a groove with the width of 1.2mm, so that the graphite sleeve belongs to intermittent turning, a bump is very easy to generate in the machining process, and the roughness can only reach about Ra1.2um. The common turning tool is processed by a squeezing and cutting mode, and the surface of the graphite sleeve is easy to generate uneven and wavy after squeezing and cutting, so that the roughness is unqualified. In addition, the graphite sleeve has large brittleness, and the collapse opening is easy to generate in the extrusion cutting process.
The rejection rate is very high in the whole machining process, the qualification rate of the traditional turning method is only 20%, so that a large number of parts and graphite sleeves are reworked and scrapped, the production cost is seriously affected, and the graphite sleeves cannot be sent according to the date required by customers.
Disclosure of Invention
Aiming at the problems, the invention provides the honing lathe tool for machining the surface roughness of the aviation graphite sleeve, which has reasonable and ingenious structure and can realize efficient and reliable machining of the graphite sleeve.
According to the technical scheme of the invention: a honing lathe tool for machining surface roughness of aviation graphite sleeves is characterized in that: the cutter comprises a cutter bar main body, wherein a cutter head of the cutter bar main body is welded with a substrate to form a cutting edge, and a diamond coating is arranged on the substrate.
As a further improvement of the invention, the cutter head of the cutter bar main body is provided with a cutter head avoiding part, and the included angle formed by the cutter head of the cutter bar main body is 70 degrees.
As a further development of the invention, the tool bar body is provided with a tool bar pressing station.
As a further improvement of the invention, the surface of the cutter bar main body is provided with a cooling pipe extending along the axial direction, and the liquid outlet end of the cooling pipe is bent towards the cutter head part.
According to the honing lathe tool provided by the invention, the honing knife and the lathe tool are combined, so that high-quality stable processing of the graphite sleeve can be efficiently and rapidly realized.
The invention also provides a use method of the honing lathe tool for machining the surface roughness of the aviation graphite sleeve, and the honing lathe tool comprises the following steps:
step one, designing the appearance of a cutter: designing the shape of a cutter according to the size of a cutter rest of the numerical control lathe and the shape of a part, so that the cutter bar does not interfere with the part in the turning process, and the shape of the cutter bar is consistent with the shape of a boring cutter of the lathe;
step two, embedding honing bars: welding a matrix on the cutter bar main body, embedding 1200 meshes of diamond on the matrix, wherein the height of the cutting edge of the honing strip is 0.1mm lower than the rotation center of the machine tool;
step three, cooling mode: the cutter bar main body is provided with a cooling pipe extending along the axial direction, cutting oil is introduced into the cooling pipe, and the spraying pressure of the cutting oil is at least 2MPa;
step four, a processing step: firstly, rough machining is carried out on the graphite sleeve by using a common turning tool, a margin of 0.02mm is reserved on one side, then finish machining is carried out by using a honing turning tool, the finish machining margin is reduced, and the dimensional accuracy and the roughness after machining are ensured;
step five, processing parameters: during finish machining, the rotating speed of the main shaft is kept at 800r/min, a cutter is used for machining out the allowance of 0.02mm, then the cutter is used for carrying out blank travel for one time, microscopic high points are removed, and the feeding amount is 0.1mm;
step six, high-pressure cleaning: after turning is finished, the surface of the part is cleaned at high pressure by using cutting oil, so that impurities on the surface of the graphite sleeve are removed, and the surface is prevented from being scratched in the follow-up detection and circulation processes.
The matrix adopts a cubic boron nitride matrix.
The invention has the technical effects that: according to the invention, a honing cutter is innovatively developed in a mode of matching the turning tool with the honing cutter, so that the high-efficiency, stable and rapid processing of the aviation graphite sleeve can be realized; the 1200-mesh diamond honing strip is used, and the rotating speed of the main shaft of the part is adjusted to 800r/min, so that the surface roughness of the machined graphite sleeve can be effectively improved; the spraying pressure of the cutting oil is above 2MPa, so that graphite scraps generated in the machining process can be effectively washed out; after machining is finished, the surface of the graphite sleeve is cleaned by cutting oil under high pressure on a machine tool, so that surface impurities are removed, and the surface of the graphite sleeve is prevented from being scratched in the subsequent circulation and detection processes.
Drawings
Figure 1 is a schematic view of the honing tool of the invention.
FIG. 2 is a schematic view of a graphite sleeve and parts suitable for the present invention.
FIG. 3 is a schematic process diagram of the present invention.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
In fig. 1-3, the tool bar comprises a tool bar main body 1, honing strips 2, a tool bit avoiding part 3, a cooling pipe 4, a tool bar compacting station 5, a graphite sleeve 6 and the like.
As shown in fig. 1, the honing lathe tool for machining the surface roughness of an aviation graphite sleeve comprises a cutter bar main body 1, wherein a cutter head of the cutter bar main body 1 is welded with a substrate to form a cutting edge, and a diamond coating is arranged on the substrate.
The tool bit of the tool bar main body 1 is provided with a tool bit avoiding part 3, and the included angle formed by the tool bit of the tool bar main body 1 is 70 degrees.
The cutter bar main body 1 is provided with a cutter bar pressing station 5.
The surface of the cutter bar main body 1 is provided with a cooling pipe 4 extending along the axial direction, and the liquid outlet end of the cooling pipe 4 is bent towards the cutter head part.
As shown in fig. 1 to 3, a method for using a honing lathe tool for machining surface roughness of an aviation graphite sleeve is characterized by comprising the following steps:
step one, designing the appearance of a cutter: designing the shape of a cutter according to the size of a cutter rest of the numerical control lathe and the shape of a part, so that the cutter bar does not interfere with the part in the turning process, and the shape of the cutter bar is consistent with the shape of a boring cutter of the lathe;
step two, embedding honing bars: welding a matrix on the cutter bar main body 1, wherein the matrix is a cubic boron nitride matrix, 1200 meshes of diamond is inlaid on the matrix, and the height of the cutting edge of the honing strip is 0.1mm lower than the rotation center of the machine tool;
step three, cooling mode: the cutter bar main body 1 is provided with a cooling pipe 4 extending along the axial direction, cutting oil is introduced into the cooling pipe 4, and the spraying pressure of the cutting oil is at least 2MPa;
step four, a processing step: firstly, rough machining is carried out on the graphite sleeve by using a common turning tool, a margin of 0.02mm is reserved on one side, then finish machining is carried out by using a honing turning tool, the finish machining margin is reduced, and the dimensional accuracy and the roughness after machining are ensured;
step five, processing parameters: during finish machining, the rotating speed of the main shaft is kept at 800r/min, a cutter is used for machining out the allowance of 0.02mm, then the cutter is used for carrying out blank travel for one time, microscopic high points are removed, and the feeding amount is 0.1mm;
step six, high-pressure cleaning: after turning is finished, the surface of the part is cleaned at high pressure by using cutting oil, so that impurities on the surface of the graphite sleeve are removed, and the surface is prevented from being scratched in the follow-up detection and circulation processes.
The honing lathe tool skillfully combines the lathe tool and the honing tool, thereby not only meeting the rigidity of the cutter bar, but also achieving the honing effect. The invention provides a concept of honing turning tool, which can be widely used in the actual production process, and besides the turning tool, the using conditions and methods are important, and the desired effect can be achieved only by strictly using the method and parameters described in the invention.
Firstly, a honing lathe tool is needed to be used in a numerical control lathe, and secondly, a diamond honing bar is used to achieve the honing effect; in addition, cutting oil with pressure of more than 2MPa is required to be used for cooling and lubricating in the processing process, so that the surface of the graphite sleeve can be lubricated at any time in the honing process, and meanwhile, the processed scraps are washed away by the pressure of 2MPa, so that the surface of the graphite sleeve is prevented from being scratched in the processing process. The processing parameters are also important, and the parameters provided above can ensure that the roughness of the processed graphite sleeve can reach more than Ra0.2. After finishing processing is finished, 2MPa cutting oil is used for cleaning the surface of the part, so that impurities on the surface of the graphite sleeve and impurities after processing are removed, and the surface of the graphite sleeve is prevented from being scratched in the subsequent circulation and detection processes.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (2)
1. The application method of the honing lathe tool for machining the surface roughness of the aviation graphite sleeve comprises a cutter bar main body (1), wherein a cutter head of the cutter bar main body (1) is welded with a substrate to form a cutting edge, and a diamond coating is arranged on the substrate; the cutter head of the cutter bar main body (1) is provided with a cutter head avoiding part (3), and an included angle formed by the cutter head of the cutter bar main body (1) is 70 degrees; the cutter bar main body (1) is provided with a cutter bar compression station (5); the surface of the cutter bar main body (1) is provided with a cooling pipe (4) extending along the axial direction, and the liquid outlet end of the cooling pipe (4) is bent towards the cutter head part; the method is characterized by comprising the following steps of:
step one, designing the appearance of a cutter: designing the shape of a cutter according to the size of a cutter rest of the numerical control lathe and the shape of a part, so that the cutter bar does not interfere with the part in the turning process, and the shape of the cutter bar is consistent with the shape of a boring cutter of the lathe;
step two, embedding honing bars: welding a matrix on a cutter bar main body (1), embedding 1200 meshes of diamond on the matrix, wherein the height of the cutting edge of a honing strip is 0.1mm lower than the rotation center of a machine tool;
step three, cooling mode: a cooling pipe (4) extending along the axial direction is arranged on the cutter bar main body (1), cutting oil is introduced into the cooling pipe (4), and the spraying pressure of the cutting oil is at least 2MPa;
step four, a processing step: firstly, rough machining is carried out on the graphite sleeve by using a common turning tool, a margin of 0.02mm is reserved on one side, then finish machining is carried out by using a honing turning tool, the finish machining margin is reduced, and the dimensional accuracy and the roughness after machining are ensured;
step five, processing parameters: during finish machining, the rotating speed of the main shaft is kept at 800r/min, a cutter is used for machining out the allowance of 0.02mm, then the cutter is used for carrying out blank travel for one time, microscopic high points are removed, and the feeding amount is 0.1mm;
step six, high-pressure cleaning: after turning is finished, the surface of the part is cleaned at high pressure by using cutting oil, so that impurities on the surface of the graphite sleeve are removed, and the surface is prevented from being scratched in the follow-up detection and circulation processes.
2. A method of using the honing tool for machining the surface roughness of aviation graphite sleeves according to claim 1, wherein: the matrix adopts a cubic boron nitride matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111658092.9A CN114290533B (en) | 2021-12-30 | 2021-12-30 | Honing lathe tool for machining surface roughness of aviation graphite sleeve and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111658092.9A CN114290533B (en) | 2021-12-30 | 2021-12-30 | Honing lathe tool for machining surface roughness of aviation graphite sleeve and use method |
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| Publication Number | Publication Date |
|---|---|
| CN114290533A CN114290533A (en) | 2022-04-08 |
| CN114290533B true CN114290533B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111658092.9A Active CN114290533B (en) | 2021-12-30 | 2021-12-30 | Honing lathe tool for machining surface roughness of aviation graphite sleeve and use method |
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| CN (1) | CN114290533B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1486818A (en) * | 2002-08-30 | 2004-04-07 | 日产自动车株式会社 | Honing method and honing equipment |
| CN101209499A (en) * | 2006-12-27 | 2008-07-02 | 天水星火机床有限责任公司 | Diamond bite special for ultra-precise turn |
| CN202539700U (en) * | 2012-03-30 | 2012-11-21 | 广西玉柴机器股份有限公司 | Honing and hinging tool |
| CN103372687A (en) * | 2013-08-05 | 2013-10-30 | 苏州信能精密机械有限公司 | High-precision vertical internal oil injection diamond reamer |
| CN103691969A (en) * | 2013-12-06 | 2014-04-02 | 大连理工大学 | Method for cutting black metal by diamond tool |
| CN204621103U (en) * | 2015-03-18 | 2015-09-09 | 石嘴山市新宇兰山电碳有限公司 | A kind of special boring cutter of processing graphite part elongated bore |
| CN110695837A (en) * | 2019-10-18 | 2020-01-17 | 苏州航发航空零部件有限公司 | Honing method for inner hole reticulate pattern of actuator cylinder of aircraft engine |
| CN211728773U (en) * | 2019-07-04 | 2020-10-23 | 深圳市力博刀具技术有限公司 | Graphite processing cutter |
| CN212071546U (en) * | 2020-04-03 | 2020-12-04 | 镇江市耐尔特超硬刀具有限公司 | Combined type honing rod with built-in oil spray hole |
| CN214980174U (en) * | 2021-05-06 | 2021-12-03 | 重庆捷灿机械有限公司 | Numerical control honing cutter |
-
2021
- 2021-12-30 CN CN202111658092.9A patent/CN114290533B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1486818A (en) * | 2002-08-30 | 2004-04-07 | 日产自动车株式会社 | Honing method and honing equipment |
| CN101209499A (en) * | 2006-12-27 | 2008-07-02 | 天水星火机床有限责任公司 | Diamond bite special for ultra-precise turn |
| CN202539700U (en) * | 2012-03-30 | 2012-11-21 | 广西玉柴机器股份有限公司 | Honing and hinging tool |
| CN103372687A (en) * | 2013-08-05 | 2013-10-30 | 苏州信能精密机械有限公司 | High-precision vertical internal oil injection diamond reamer |
| CN103691969A (en) * | 2013-12-06 | 2014-04-02 | 大连理工大学 | Method for cutting black metal by diamond tool |
| CN204621103U (en) * | 2015-03-18 | 2015-09-09 | 石嘴山市新宇兰山电碳有限公司 | A kind of special boring cutter of processing graphite part elongated bore |
| CN211728773U (en) * | 2019-07-04 | 2020-10-23 | 深圳市力博刀具技术有限公司 | Graphite processing cutter |
| CN110695837A (en) * | 2019-10-18 | 2020-01-17 | 苏州航发航空零部件有限公司 | Honing method for inner hole reticulate pattern of actuator cylinder of aircraft engine |
| CN212071546U (en) * | 2020-04-03 | 2020-12-04 | 镇江市耐尔特超硬刀具有限公司 | Combined type honing rod with built-in oil spray hole |
| CN214980174U (en) * | 2021-05-06 | 2021-12-03 | 重庆捷灿机械有限公司 | Numerical control honing cutter |
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| Publication number | Publication date |
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| CN114290533A (en) | 2022-04-08 |
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