CN111992746A - Processing device for realizing workpiece surface nanocrystallization and processing method for crankshaft device surface gradient nanocrystallization - Google Patents
Processing device for realizing workpiece surface nanocrystallization and processing method for crankshaft device surface gradient nanocrystallization Download PDFInfo
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- CN111992746A CN111992746A CN202010743329.2A CN202010743329A CN111992746A CN 111992746 A CN111992746 A CN 111992746A CN 202010743329 A CN202010743329 A CN 202010743329A CN 111992746 A CN111992746 A CN 111992746A
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- 238000012545 processing Methods 0.000 title claims abstract description 100
- 238000007709 nanocrystallization Methods 0.000 title claims abstract description 84
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000003754 machining Methods 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000002086 nanomaterial Substances 0.000 claims abstract description 21
- 238000005457 optimization Methods 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 19
- 238000005096 rolling process Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000012994 industrial processing Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 238000004098 selected area electron diffraction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
- B23B29/12—Special arrangements on tool holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a processing device for realizing workpiece surface nanocrystallization and a processing method for crankshaft device surface gradient nanocrystallization, and belongs to the technical field of metal material surface strengthening. This processingequipment includes handle of a knife, rotatable support knife rest, surface nanocrystallization processing tool bit and spherical processing ball, wherein: the rotatable supporting tool rest is arranged at the machining end of the tool handle and can rotate; the nanometer processing tool bit is fixed on the rotatable support tool rest, the spherical processing ball is arranged on the nanometer processing tool bit, and the spherical processing ball can roll freely. The spherical machining balls do not need to be retained by an additional protective cover, so that interference of a machining system and a crankshaft device is avoided. The surface nano-structure layer can be obtained on the surface of the crankshaft through the optimization of the surface nano-process parameters.
Description
Technical Field
The invention relates to the technical field of metal material surface strengthening, in particular to a processing device and a method for realizing surface nanocrystallization, and particularly relates to a processing device for realizing workpiece surface nanocrystallization and a processing method for crankshaft device surface gradient nanocrystallization.
Background
When the engine works, the crankshaft bears large alternating bending stress and torsional stress, the stress distribution is extremely uneven, fatigue cracks are easy to generate, and the occurrence of fatigue fracture is caused. The most severe stress concentrations are at the transition fillets of the connecting rod journal and the crank of the crankshaft, which are often the sources of fatigue cracks. The existing method for improving the performance of the crankshaft mainly adopts the technologies of nitriding, intermediate frequency quenching and fillet rolling. However, nitriding, as a technique having an influence on the environment, has restricted its large-scale application; medium frequency quenching is generally adopted in the crankshaft industry, but the quenching process is not easy to control, a hardening layer is easy to crack, and the quenched crankshaft is easy to generate larger deformation; although the fillet rolling can improve the fatigue property of the nodular cast iron crankshaft, the fillet rolling has limited strengthening effect on the crankshaft made of forged steel and other materials, often cannot meet the design requirement, and the surface layer residual compressive stress obtained by the fillet rolling technology is easy to release in the service process of the crankshaft, so that the strengthening effect is greatly reduced.
In order to solve the problems, a surface controllable composite strengthening technology of a crankshaft material is considered. The method combines heat treatment (quenching and tempering or medium-frequency quenching and low-temperature tempering) with surface mechanical rolling nano treatment (SMRT), and performs surface controllable composite strengthening treatment on a crankshaft material (such as 42CrMoA alloy steel) to prepare a surface gradient nano structure layer for strengthening the crankshaft material.
However, the special structure and size of the crankshaft solid device and other industrial processing devices, especially the connecting rod shaft fillet and main shaft fillet part of the crankshaft device, crank arm facade and the like have complex curved surface structures, the operable space is limited, and the surface nanocrystallization is greatly limited. The existing processing technology such as fillet rolling technology adopts a roller follow-up type of a rolling head to roll a fillet, and a residual compressive stress layer is preset, but the surface nanocrystallization effect cannot be achieved, and a surface gradient nanostructure layer cannot be generated. And the processing system structure that the normal realization simple pole material surface nanocrystallization was expected to be comparatively simple (like patent ZL201510776845.4), if when processing treatment to positions such as bent axle entity device especially fillet, processing system can take place to interfere with the peripheral structure of bent axle fillet, can not realize the surface nanocrystallization of positions such as bent axle device especially fillet, crank arm facade. Therefore, how to perform the surface nanocrystallization treatment of the crank solid device is an urgent problem to be solved.
Disclosure of Invention
The invention aims to provide a processing device for realizing workpiece surface nanocrystallization and a processing method for crankshaft device surface gradient nanocrystallization, which can realize the surface nanocrystallization of a device and obtain a surface nano-structure layer, thereby improving the performance of the device.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a realize processingequipment of work piece surface nanometer, includes handle of a knife, rotatable support knife rest, surface nanometer processing tool bit and spherical processing ball, wherein: the rotatable supporting tool rest is arranged at the machining end of the tool handle and can rotate; the nanometer processing tool bit is fixed on the rotatable support tool rest, the spherical processing ball is arranged on the nanometer processing tool bit, and the spherical processing ball can roll freely.
The knife handle is of a strip-shaped structure, an arc-shaped plate-shaped bulge is arranged at the machining end of the knife handle, and one surface of the arc-shaped plate-shaped bulge is connected with the rotatable support knife rest through a bolt.
The bottom surface of the rotatable supporting tool rest is connected with the processing end of the tool handle, a columnar groove is further formed in the rotatable supporting tool rest, and one end of the columnar groove is open while the other end is closed; and the nanocrystallization processing tool bit is embedded and fixed in the columnar groove.
The nano machining tool bit is of a cylindrical structure, and the size of the nano machining tool bit is matched with that of the cylindrical groove; a lubricating oil hole is formed in the nanocrystallization processing tool bit in the axial direction, and meanwhile, a spherical processing ball is further arranged at one end of the nanocrystallization processing tool bit and extends out of the opening end of the columnar groove; the spherical processing ball is used for carrying out nanocrystallization processing on the surface of a workpiece.
When the axis of the columnar groove on the rotatable supporting tool rest is parallel to the axis of the tool handle, the rotatable supporting tool rest can rotate in an angle range of-90 degrees to +90 degrees on the arc-shaped plate surface of the tool handle relative to the axis of the tool handle.
And the nanocrystallization machining tool bit is fixed in the columnar groove in a threaded connection and/or welding mode.
The spherical processing ball is detachably connected with the nanocrystallization processing tool bit; the rotatable supporting tool rest can be adaptively switched with different rotation angles according to the profile characteristics of the workpiece to be machined.
The processing method for the gradient nanocrystallization of the surface of the crankshaft device by using the processing device obtains a surface nano-structure layer on the surface of the crankshaft device through optimization of technological parameters, and specifically comprises the following steps: the machining process is controlled by the pressing depth of the spherical machining ball on the surface of the crankshaft, the machining path is planned according to the profile characteristics of the surface of the crankshaft, the spherical machining ball is fed tangentially along the surface of the crankshaft, the machining process is not less than 1 time, the pressing depth of each machining is increased compared with the previous pressing depth, so that large strain and a strain gradient are obtained, and the surface nanocrystallization of a crankshaft device is realized.
The to-be-processed part of the crankshaft device is the surface of one or more parts of a connecting rod shaft, a main shaft, a connecting rod shaft fillet, a main shaft fillet and a crank arm.
The rotatable supporting tool rest is switched by different rotation angles according to the profile characteristics of the crankshaft to be processed, so that the surface to be processed is mainly subjected to positive pressure to reduce shearing force, the stability of the nanocrystallization process is improved, different nanostructure layers and surface quality are obtained, and the crankshaft is finally provided with a surface gradient nanostructure layer.
The invention has the following advantages and beneficial effects:
the surface nanocrystallization processing device and the surface nanocrystallization processing method can process solid devices of the crankshaft, and particularly can realize the preparation of a surface gradient nanostructure aiming at parts with complex structures, such as a main shaft fillet, a connecting rod shaft fillet, a crank arm vertical surface and the like. Specifically, the surface gradient nanostructure preparation device fully considers the characteristic parameters such as the structure, the type and the size of a crankshaft entity device, meets the accessibility of a processing space position, avoids the interference with a crankshaft structure, optimizes the structural type of the processing device, and adopts a tool rest type processing device. The spherical processing ball is placed in the nanocrystallization processing tool bit and can freely roll, so that the use of a spherical processing ball protective cover is avoided, and the surface nanocrystallization treatment of narrow and small space positions such as a connecting rod shaft fillet and a main shaft fillet in a crankshaft device is realized. The surface gradient nanostructure of the crankshaft device can be successfully prepared by optimizing the preparation process parameters (excircle linear velocity, pressing depth, processing pass, feeding speed and the like) of the surface gradient nanostructure.
Meanwhile, when the surface nanocrystallization processing device disclosed by the invention operates, the stress on the surface of a crankshaft device to be processed is mainly positive pressure, so that the shearing force is reduced to the maximum extent, the stability of the surface nanocrystallization processing process is improved, and a deeper nano layer and better surface quality can be obtained. In addition, the surface nanocrystallization processing device can be seamlessly embedded into the existing production line, and the surface nanocrystallization technological process is easy to realize.
After the surface nanocrystallization method and the device of the invention are used for processing the parts of a crankshaft solid device, including fillets and the like, the surface crystal grain size reaches the nanoscale (10 nm-100 nm) or submicron scale (100 nm-1 micron), and the depth of a surface gradient nanostructure layer and a hardened layer is 100 microns-1000 microns. The surface roughness value Ra of the crankshaft round part reaches 0.01-0.6 micron. Different grain size grades, surface gradient nanostructure layer, hardened layer depth grades and surface roughness values are obtained by adjusting and matching surface nanocrystallization process parameters.
Compared with the crankshaft which is not processed by the surface nanocrystallization method, the crankshaft is processed by the surface nanocrystallization method and the surface nanocrystallization device, so that the surface gradient nanostructure layer is obtained, the surface smoothness of the crankshaft is greatly improved, the surface hardness is obviously improved, and the fatigue strength is also obviously improved. It should be noted that the device and the method of the invention can realize the surface nanocrystallization treatment of the fillet vertical surface, namely the crank arm vertical surface, and the existing crankshaft surface treatment method including the grinding method and the like is difficult to realize the processing or treatment of the part.
Drawings
FIG. 1 is a schematic view of the overall structure of the surface nanocrystallization processing apparatus of the present invention.
Fig. 2 is a sectional view (part) of a nanocrystallization machining tool tip in the surface nanocrystallization machining apparatus of the present invention.
FIG. 3 is a schematic view showing a surface processing process of a crankshaft device using the surface nanocrystallization processing apparatus of the present invention.
FIG. 4 is a photograph showing the surface of the crankshaft after the tool holder-type surface nanocrystallization treatment according to the present invention.
FIG. 5 is a TEM analysis result of the surface layer structure of the cross section of the crankshaft after the tool holder type surface nanocrystallization treatment according to the present invention; wherein: (a) bright field image and selected area electron diffraction photograph; (b) dark field imaging; (c) statistical distribution of grain size.
FIG. 6 shows the microhardness distribution of the cross section of the crankshaft in the depth direction after the tool holder type surface nanocrystallization treatment according to the present invention.
In the figure: 1-a knife handle; 2-rotatably supporting the tool post; 3-nanocrystallization machining of a tool bit; 4-lubricating oil holes; 5-processing ball balls in a spherical shape; 6-crankshaft device; 7-crankshaft fillet.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and examples.
The invention provides a processing device for realizing workpiece surface nanocrystallization, which is of a tool rest type structure and is shown in figures 1-3. The machining device comprises a cutter handle 1, a rotatable supporting cutter frame 2, a nanocrystallization machining cutter head 3 and spherical machining balls 5; the rotatable supporting tool rest 2 is arranged at the processing end of the tool handle 1, and the rotatable supporting tool rest 2 can rotate by-90 degrees to +90 degrees; the nanocrystallization processing tool bit 3 is fixed on the rotatable supporting tool rest 2, the spherical processing ball 5 can be detachably arranged on the nanocrystallization processing tool bit, the spherical processing ball 5 can freely roll, an extra protective cover is not needed for keeping, and therefore interference between a processing system and a crankshaft device 6 structure is avoided. The concrete structure of each part is as follows:
the knife handle is of a strip-shaped structure, an arc-shaped plate-shaped bulge is arranged at the machining end of the knife handle, and the rotatable supporting knife rest is connected to one surface of the arc-shaped plate-shaped bulge through a bolt (or in a welding mode).
The bottom surface of the rotatable supporting tool rest is connected with the machining end of the tool handle, a cylindrical groove with one open end is further formed in the rotatable supporting tool rest, and the nanocrystallization machining tool bit is embedded and fixed in the cylindrical groove in a threaded connection and/or welding mode.
When the axis of the columnar groove on the rotatable supporting tool rest is parallel to the axis of the tool shank, the rotatable supporting tool rest can rotate in an angle range of-90 degrees to +90 degrees relative to the axis of the tool shank on the plane of the arc-shaped plate-shaped protrusion of the tool shank. The rotatable supporting tool rest can adaptively switch different rotation angles according to the profile characteristics of a workpiece to be machined, so that the action of the nano machining tool bit is driven.
The nano machining tool bit is of a cylindrical structure, and the size of the nano machining tool bit is matched with that of the cylindrical groove; the axial of nanometer processing tool bit is equipped with lubricating-oil hole 4, and the one end of nanometer processing tool bit still is equipped with spherical processing ball simultaneously, spherical processing ball stretches out the open end of column groove. The specific connection mode of the nanocrystallization processing tool bit and the spherical processing ball is as follows: one end of the nanocrystallization processing tool bit is provided with an inner groove, the diameter of the circular notch is slightly smaller than that of the spherical processing rolling ball, so that most of the spherical processing rolling ball is limited in the inner groove, and the spherical processing rolling ball can freely rotate in the inner groove.
The process of machining by adopting the tool rest type surface nano machining device is as follows:
when the tool rest type surface nanocrystallization processing device is adopted, according to the surface profile characteristics (straight surfaces or curved surfaces) of the to-be-processed part of the crankshaft device 6, particularly the structural size characteristics of the crankshaft fillet 7, switching of different angles (-90 degrees) of the rotatable supporting tool rest 2 is carried out, interference of a processing device system and a crankshaft structure is avoided, the to-be-processed surface mainly bears positive pressure, shearing force is reduced, stability of a surface nanocrystallization process is improved, and a deeper gradient nanostructure layer and better surface quality are obtained.
After the angle of the rotatably supporting tool holder 2 is determined, the spherical machining ball 5 is directly placed in the nanocrystallized machining tool bit 3 without a protective cover holding. The nanomachined tool tip 3 is then secured to the rotatably supported tool holder 2 in a manner that may be selected from, but is not limited to, threaded connection or welding. The surface nanocrystallization processing device system can be lubricated and cooled by using the self-contained oil circuit system 4, and an external oil cooling system can also be used. The surface nanocrystallization processing process is controlled by the pressing depth of the spherical processing ball 5 on the surface of the crankshaft 6, the processing path is planned according to the surface profile characteristics of the crankshaft 6, the tangential feeding is carried out along the surface of the crankshaft 6, the processing process is not less than 1 time, and the pressing depth of each processing pass is increased compared with the previous pressing depth so as to obtain the expected strain amount and the expected strain gradient. After the surface nanocrystallization processing of the n passes, gradient nanostructure layers are generated on the surfaces of the crankshaft device 6 and the fillet 7, so that the surface nanocrystallization of the crankshaft device is realized.
Example 1:
the diameter of a main shaft of the target crankshaft device is 63mm, the target crankshaft device is made of 42CrMoA steel, positions to be processed are a main shaft fillet and peripheral positions, and the radius of the fillet is 4 mm. The tool rest type surface nano processing device is adopted for processing to obtain a surface gradient nano structure layer. And planning a machining path by taking the machining track of the spherical center of the spherical machining ball as a target point, and always ensuring that the pressing depth of the machining ball on the curved surface of the crankshaft is a fixed value under each machining pass. After 2 processing passes, the press-in depth of each processing pass is n1(～50μm)、n2(～100μm)。
After the surface nanocrystallization treatment, the surface roughness Ra of the crankshaft main shaft fillet part (shown in figure 4) is less than 0.3 μm. The surface produced a graded nanostructure layer, with the grain size of the surface layer refined to 63nm (fig. 5). The surface hardness is increased from 6.7GPa of the substrate to 7.5GPa (figure 6), the hardness value is in a gradient decreasing distribution state from the surface to the inner part, and the thickness of the surface gradient nano-structure layer and the hardened layer is 600 μm.
Although the detailed description section of the present specification mainly describes the surface nanocrystallization process of a crankshaft device in detail, after reading the entire content of the present specification and referring to the drawings, those skilled in the art can recognize that the processing device for realizing surface nanocrystallization described in the present application is also applicable to other industrial processing devices, such as wheel shafts, spindles, camshafts, connecting rods, pistons, cylinders, and the like.
Claims (10)
1. A processing device for realizing workpiece surface nanocrystallization is characterized in that: this processingequipment includes handle of a knife, rotatable support knife rest, surface nanocrystallization processing tool bit and spherical processing ball, wherein: the rotatable supporting tool rest is arranged at the machining end of the tool handle and can rotate; the nanometer processing tool bit is fixed on the rotatable support tool rest, the spherical processing ball is arranged on the nanometer processing tool bit, and the spherical processing ball can roll freely.
2. The machining device for realizing workpiece surface nanocrystallization according to claim 1, wherein: the knife handle is of a strip-shaped structure, an arc-shaped plate-shaped bulge is arranged at the machining end of the knife handle, and one surface of the arc-shaped plate-shaped bulge is connected with the rotatable support knife rest through a bolt.
3. The machining apparatus for realizing workpiece surface nanocrystallization according to claim 2, wherein: the bottom surface of the rotatable supporting tool rest is connected with the processing end of the tool handle, a columnar groove is further formed in the rotatable supporting tool rest, and one end of the columnar groove is open while the other end is closed; and the nanocrystallization processing tool bit is embedded and fixed in the columnar groove.
4. The machining device for realizing workpiece surface nanocrystallization according to claim 3, wherein: the nano machining tool bit is of a cylindrical structure, and the size of the nano machining tool bit is matched with that of the cylindrical groove; a lubricating oil hole is formed in the nanocrystallization processing tool bit in the axial direction, and meanwhile, a spherical processing ball is further arranged at one end of the nanocrystallization processing tool bit and extends out of the opening end of the columnar groove; the spherical processing ball is used for carrying out nanocrystallization processing on the surface of a workpiece.
5. The machining device for realizing workpiece surface nanocrystallization according to claim 3, wherein: when the axis of the columnar groove on the rotatable supporting tool rest is parallel to the axis of the tool handle, the rotatable supporting tool rest can rotate in an angle range of-90 degrees to +90 degrees on the arc-shaped plate surface of the tool handle relative to the axis of the tool handle.
6. The machining device for realizing workpiece surface nanocrystallization according to claim 3, wherein: and the nanocrystallization machining tool bit is fixed in the columnar groove in a threaded connection and/or welding mode.
7. The machining device for realizing workpiece surface nanocrystallization according to claim 1, wherein: the spherical processing ball is detachably connected with the nanocrystallization processing tool bit; the rotatable supporting tool rest can be adaptively switched with different rotation angles according to the profile characteristics of the workpiece to be machined.
8. A method for processing a surface gradient nanocrystallization of a crankshaft device by using the processing apparatus as set forth in any one of claims 1 to 7, characterized in that: the processing method obtains a surface nano-structure layer on the surface of a crankshaft device through optimization of technological parameters, and specifically comprises the following steps: the machining process is controlled by the pressing depth of the spherical machining ball on the surface of the crankshaft, the machining path is planned according to the profile characteristics of the surface of the crankshaft, the spherical machining ball is fed tangentially along the surface of the crankshaft, the machining process is not less than 1 time, the pressing depth of each machining is increased compared with the previous pressing depth, so that large strain and a strain gradient are obtained, and the surface nanocrystallization of a crankshaft device is realized.
9. The method for processing the surface gradient nanocrystallization of the crankshaft device as claimed in claim 8, wherein: the to-be-processed part of the crankshaft device is the surface of one or more parts of a connecting rod shaft, a main shaft, a connecting rod shaft fillet, a main shaft fillet and a crank arm.
10. The method for processing the surface gradient nanocrystallization of the crankshaft device as claimed in claim 8, wherein: the rotatable supporting tool rest is switched by different rotation angles according to the profile characteristics of the crankshaft to be processed, so that the surface to be processed is mainly subjected to positive pressure to reduce shearing force, the stability of the nanocrystallization process is improved, and different nanostructure layers and surface quality are obtained.
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| CN111850266A (en) * | 2020-07-29 | 2020-10-30 | 中国科学院金属研究所 | Machining method and machining device for realizing surface nanocrystallization of crankshaft device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202726092U (en) * | 2012-08-14 | 2013-02-13 | 盘起工业(大连)有限公司 | End face special-shape turning indexable cutter bar |
| KR20130092148A (en) * | 2012-02-10 | 2013-08-20 | 이근호 | Cutting tool that control cutting angle of machine tool that digital angle indication is equipped |
| CN103722342A (en) * | 2014-01-24 | 2014-04-16 | 宁波市精恒凯翔机械有限公司 | Spherical rolling and pressing cutter |
| CN105369024A (en) * | 2014-08-18 | 2016-03-02 | 中国科学院金属研究所 | Method for producing gradient nanometer structure on martensitic steel surface |
| CN105385829A (en) * | 2015-11-12 | 2016-03-09 | 中国科学院金属研究所 | Surface-controllable composite strengthening method for forged steel crankshaft material |
| CN105563007A (en) * | 2014-10-16 | 2016-05-11 | 邓殊维 | Process for machining gradient nano-structure layer on surface of metal material |
| CN106086344A (en) * | 2016-07-28 | 2016-11-09 | 中国科学院金属研究所 | A kind of metal material roller type method for making Nano surface |
| CN107604138A (en) * | 2016-07-12 | 2018-01-19 | 中国科学院金属研究所 | A kind of super low temperature method and apparatus for realizing making Nano surface of metal material |
| CN207787736U (en) * | 2018-01-16 | 2018-08-31 | 郑州市世博超硬刀具有限公司 | A kind of end faces PCD knife |
| CN209303745U (en) * | 2018-11-20 | 2019-08-27 | 歌尔科技有限公司 | Adjustable tools |
-
2020
- 2020-07-29 CN CN202010743329.2A patent/CN111992746A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130092148A (en) * | 2012-02-10 | 2013-08-20 | 이근호 | Cutting tool that control cutting angle of machine tool that digital angle indication is equipped |
| CN202726092U (en) * | 2012-08-14 | 2013-02-13 | 盘起工业(大连)有限公司 | End face special-shape turning indexable cutter bar |
| CN103722342A (en) * | 2014-01-24 | 2014-04-16 | 宁波市精恒凯翔机械有限公司 | Spherical rolling and pressing cutter |
| CN105369024A (en) * | 2014-08-18 | 2016-03-02 | 中国科学院金属研究所 | Method for producing gradient nanometer structure on martensitic steel surface |
| CN105563007A (en) * | 2014-10-16 | 2016-05-11 | 邓殊维 | Process for machining gradient nano-structure layer on surface of metal material |
| CN105385829A (en) * | 2015-11-12 | 2016-03-09 | 中国科学院金属研究所 | Surface-controllable composite strengthening method for forged steel crankshaft material |
| CN107604138A (en) * | 2016-07-12 | 2018-01-19 | 中国科学院金属研究所 | A kind of super low temperature method and apparatus for realizing making Nano surface of metal material |
| CN106086344A (en) * | 2016-07-28 | 2016-11-09 | 中国科学院金属研究所 | A kind of metal material roller type method for making Nano surface |
| CN207787736U (en) * | 2018-01-16 | 2018-08-31 | 郑州市世博超硬刀具有限公司 | A kind of end faces PCD knife |
| CN209303745U (en) * | 2018-11-20 | 2019-08-27 | 歌尔科技有限公司 | Adjustable tools |
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