CN114290533A - Honing turning tool for machining surface roughness of aviation graphite sleeve and using method - Google Patents
Honing turning tool for machining surface roughness of aviation graphite sleeve and using method Download PDFInfo
- Publication number
- CN114290533A CN114290533A CN202111658092.9A CN202111658092A CN114290533A CN 114290533 A CN114290533 A CN 114290533A CN 202111658092 A CN202111658092 A CN 202111658092A CN 114290533 A CN114290533 A CN 114290533A
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- Prior art keywords
- honing
- tool
- machining
- cutter
- graphite sleeve
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 53
- 239000010439 graphite Substances 0.000 title claims abstract description 53
- 238000003754 machining Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000003746 surface roughness Effects 0.000 title claims abstract description 16
- 239000010730 cutting oil Substances 0.000 claims abstract description 15
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 9
- 239000010432 diamond Substances 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000003825 pressing 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
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 238000004519 manufacturing process 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
- 238000010586 diagram 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- 238000006467 substitution reaction Methods 0.000 description 1
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention belongs to the technical field of aviation, and relates to a honing turning tool for machining the surface roughness of an aviation graphite sleeve and a using method thereof. According to the invention, a honing cutter is innovatively developed in a mode of matching a turning tool with the honing cutter, so that the high-efficiency, stable and rapid processing of an aviation graphite sleeve can be realized; the surface roughness of the graphite sleeve after machining can be effectively improved by using a 1200-mesh diamond honing strip and adjusting the rotating speed of a main shaft of the part to 800 r/min; the spraying pressure of the cutting oil is more than 2MPa, and the graphite scraps generated in the machining process can be effectively flushed out; the surface of the graphite sleeve is cleaned at high pressure by using cutting oil on a machine tool, surface impurities are removed, and the surface of the graphite sleeve is prevented from being scratched in the subsequent circulation and detection processes.
Description
Technical Field
The invention belongs to the technical field of aviation, and relates to a honing turning tool for machining the surface roughness of an aviation graphite sleeve and a using method thereof.
Background
At present, a series of aluminum alloy, stainless steel and high-temperature alloy seat body parts are produced in our factory, a graphite sleeve needs to be assembled after part of the parts are machined, then the 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 made of graphite material and is one of crystalline minerals of carbon, and the crystal is hexagonal plate-shaped and generally in a flake shape or a scaly shape, so that the texture is soft, the graphite sleeve is also very brittle, the graphite sleeve is easy to crack in the machining process, and the roughness 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, the inner hole is provided with a groove with the width of 1.2mm, the graphite sleeve belongs to intermittent turning, the graphite sleeve is extremely easy to generate a collision port in the machining process, and the roughness can only reach about Ra1.2um. The common lathe tool is processed in an extruding and cutting mode, and the surface of the graphite sleeve is easy to generate uneven undulation after extrusion and cutting, so that the roughness is unqualified. In addition, the graphite sleeve is large in brittleness, and the opening is easy to break 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 influenced, and the graphite sleeves cannot be delivered according to the date required by customers.
Disclosure of Invention
Aiming at the problems, the invention provides the honing turning tool for machining the surface roughness of the aviation graphite sleeve, the turning tool is reasonable and ingenious in structure, and the efficient and reliable machining of the graphite sleeve can be realized.
According to the technical scheme of the invention: the utility model provides a honing lathe tool of machine tooling aviation graphite cover roughness which characterized in that: the cutting tool comprises a tool bar main body, wherein a tool bit of the tool 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 improvement of the invention, the cutter bar main body is provided with a cutter 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.
The honing turning tool provided by the invention combines the honing tool and the turning tool, and can efficiently and quickly realize high-quality stable processing of the graphite sleeve.
The invention also provides a use method of the honing turning tool for machining the surface roughness of the aviation graphite sleeve, and the honing turning tool comprises the following steps:
step one, designing the shape of a cutter: designing the shape of a cutter according to the size of a cutter rest of the numerical control lathe and the appearance of a part, so that the cutter rest does not interfere with the part in the turning process, and the shape of the cutter bar is consistent with that of a boring cutter of the lathe;
step two, inlaying honing strips: welding a base body on the cutter bar main body, embedding 1200 meshes of diamond on the base body, and enabling the height of a cutting edge of the honing bar to be lower than the rotation center of the machine tool by 0.1 mm;
step three, a 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 2 MPa;
step four, processing steps: firstly, using a common lathe tool to perform rough machining on the graphite sleeve, reserving a margin of 0.02mm on a single side, and then using a honing lathe tool to perform finish machining, so that the finish machining margin is reduced, and the dimensional precision and the roughness after machining are ensured;
step five, processing parameters: during fine machining, the rotating speed of the main shaft is kept at 800r/min, the allowance of 0.02mm is machined once, then the main shaft is moved away once again, microscopic high points are removed, and the feeding amount is 0.1 mm;
step six, high-pressure cleaning: after the turning is finished, the cutting oil is used for aligning the surface of the part to be cleaned at high pressure, 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 use method of the honing turning tool for machining the surface roughness of the aviation graphite sleeve as claimed in claim 5, is characterized in that: the matrix is 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 a turning tool with the honing cutter, so that the high-efficiency, stable and rapid processing of an aviation graphite sleeve can be realized; the surface roughness of the graphite sleeve after machining can be effectively improved by using a 1200-mesh diamond honing strip and adjusting the rotating speed of a main shaft of the part to 800 r/min; the spraying pressure of the cutting oil is more than 2MPa, and the graphite scraps generated in the machining process can be effectively flushed out; after machining is completed, cutting oil is used on a machine tool to carry out high-pressure cleaning on the surface of the graphite sleeve, surface impurities are removed, and the surface of the graphite sleeve is prevented from being scratched in the follow-up circulation and detection processes.
Drawings
Fig. 1 is a schematic view of the honing turning tool structure of the invention.
FIG. 2 is a schematic diagram of a graphite sleeve and components suitable for use with the present invention.
FIG. 3 is a schematic view of the process of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In fig. 1 to 3, the honing tool comprises a tool bar main body 1, a honing bar 2, a tool bit avoiding part 3, a cooling pipe 4, a tool bar pressing station 5, a graphite sleeve 6 and the like.
As shown in figure 1, the invention relates to a honing turning tool for machining the surface roughness of an aviation graphite sleeve, which 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 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 turning tool for machining the surface roughness of an aviation graphite sleeve, which adopts the honing turning tool of claim 1, is characterized by comprising the following steps:
step one, designing the shape of a cutter: designing the shape of a cutter according to the size of a cutter rest of the numerical control lathe and the appearance of a part, so that the cutter rest does not interfere with the part in the turning process, and the shape of the cutter bar is consistent with that of a boring cutter of the lathe;
step two, inlaying honing strips: welding a substrate on the cutter bar main body 1, wherein the substrate is a cubic boron nitride substrate, 1200-mesh diamond is embedded on the substrate, and the height of a cutting edge of the honing strip is 0.1mm lower than the rotation center of a machine tool;
step three, a 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 2 MPa;
step four, processing steps: firstly, using a common lathe tool to perform rough machining on the graphite sleeve, reserving a margin of 0.02mm on a single side, and then using a honing lathe tool to perform finish machining, so that the finish machining margin is reduced, and the dimensional precision and the roughness after machining are ensured;
step five, processing parameters: during fine machining, the rotating speed of the main shaft is kept at 800r/min, the allowance of 0.02mm is machined once, then the main shaft is moved away once again, microscopic high points are removed, and the feeding amount is 0.1 mm;
step six, high-pressure cleaning: after the turning is finished, the cutting oil is used for aligning the surface of the part to be cleaned at high pressure, 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 turning tool is formed by skillfully combining the turning tool and the honing tool, so that the rigidity of the tool bar is met, and the honing effect is achieved. The invention provides a concept of honing the turning tool, which can be widely used in the actual production process, and the using conditions and the using method are important except the cutting tool, and the desired effect can be achieved only by using the method and the parameters which are strictly described in the invention.
The honing lathe tool is firstly a lathe tool which needs to be used by a numerical control lathe, and secondly, a diamond honing strip is used to achieve the honing effect; in addition, cutting oil with the pressure of more than 2MPa is required to be used for cooling and lubricating in the machining process, so that the surface of the graphite sleeve can be lubricated at any time in the honing process, and meanwhile, machined scraps are washed away by the pressure of 2MPa, and the surface of the graphite sleeve is prevented from being scratched in the machining 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 the final machining is finished, 2MPa of cutting oil is used for cleaning the surface of the part, impurities on the surface of the graphite sleeve and impurities obtained by machining are removed, and the surface of the graphite sleeve is prevented from being scratched in the subsequent flowing and detecting processes.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a honing lathe tool of machine tooling aviation graphite cover roughness which characterized in that: the cutting tool comprises a tool bar main body (1), wherein a tool bit of the tool bar main body (1) is welded with a substrate to form a cutting edge, and a diamond coating is arranged on the substrate.
2. A honing tool for machining the surface roughness of an aircraft graphite sleeve as claimed in claim 1, wherein: 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.
3. A honing tool for machining the surface roughness of an aircraft graphite sleeve as claimed in claim 1, wherein: the cutter bar main body (1) is provided with a cutter bar pressing station (5).
4. A honing tool for machining the surface roughness of an aircraft graphite sleeve as claimed in claim 1, wherein: 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.
5. The use method of the honing turning tool for machining the surface roughness of the aviation graphite sleeve adopts the honing turning tool as claimed in claim 1, and is characterized by comprising the following steps:
step one, designing the shape of a cutter: designing the shape of a cutter according to the size of a cutter rest of the numerical control lathe and the appearance of a part, so that the cutter rest does not interfere with the part in the turning process, and the shape of the cutter bar is consistent with that of a boring cutter of the lathe;
step two, inlaying honing strips: welding a base body on the cutter bar main body (1), embedding 1200-mesh diamond on the base body, and enabling the height of a cutting edge of the honing bar to be lower than the rotation center of a machine tool by 0.1 mm;
step three, a 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 2 MPa;
step four, processing steps: firstly, using a common lathe tool to perform rough machining on the graphite sleeve, reserving a margin of 0.02mm on a single side, and then using a honing lathe tool to perform finish machining, so that the finish machining margin is reduced, and the dimensional precision and the roughness after machining are ensured;
step five, processing parameters: during fine machining, the rotating speed of the main shaft is kept at 800r/min, the allowance of 0.02mm is machined once, then the main shaft is moved away once again, microscopic high points are removed, and the feeding amount is 0.1 mm;
step six, high-pressure cleaning: after the turning is finished, the cutting oil is used for aligning the surface of the part to be cleaned at high pressure, 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.
6. The use method of the honing turning tool for machining the surface roughness of the aviation graphite sleeve as claimed in claim 5, is characterized in that: the matrix is 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114290533A true CN114290533A (en) | 2022-04-08 |
| CN114290533B CN114290533B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| Country | Link |
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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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| CN114290533B (en) | 2024-02-09 |
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