CN206662988U - A kind of crankshaft polishing machine - Google Patents
A kind of crankshaft polishing machine Download PDFInfo
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- CN206662988U CN206662988U CN201720449050.7U CN201720449050U CN206662988U CN 206662988 U CN206662988 U CN 206662988U CN 201720449050 U CN201720449050 U CN 201720449050U CN 206662988 U CN206662988 U CN 206662988U
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- type fixture
- afterbody
- head
- bent axle
- fuselage
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Abstract
The utility model discloses a kind of crankshaft polishing machine, including afterbody V-type fixture, head V-type fixture, fuselage, burnishing device and mobile platform, afterbody V-type fixture and head V-type fixture are set on the fuselage, clamping has bent axle between the afterbody V-type fixture and head V-type fixture, stroke pad is placed with the afterbody V-type fixture and head V-type fixture, the stroke pad is arranged between bent axle and afterbody V-type fixture and head V-type fixture, the burnishing device is set on a mobile platform, and the mobile platform is movably arranged on fuselage.The position of crankshaft center is adjusted by increasing or reducing stroke pad, the centre of gyration line of lathe is overlapped with the center line of bent axle, the concentricity of both rotations is improved, prevents abrasive band from following the rotation of bent axle to be pulled away, greatly improve the surface roughness of bent axle.
Description
Technical field
It the utility model is related to polissoir technical field, more particularly to a kind of crankshaft polishing machine.
Background technology
Polishing refers to the effect using machinery, chemistry or electrochemistry, reduces workpiece surface roughness, to obtain light
Bright, flat surface processing method, carried out using polishing tool and abrasive grain or other polishing medium degree workpiece surfaces
Modification processing.Polishing is extensively using in the industrial production, and progress high-volume, the polishing of scale are all using polishing in industry
Machine, for bent axle after the completion of axle journal process is refined, surface roughness can reach Ra0.4, then need ion Plasma Nitriding Treatment, due to from
Son bombardment effect, the surface roughness of axle journal, which increases to Ra1.6, can not meet product requirement, the polishing mode used at present for
Traditional slip-type polishing（It is called servo-actuated polishing）Pressure head compresses abrasive band and journal surface is polished, in the course of work, abrasive band
Motionless axle journal is made to rotate at a high speed.
Patent No. Patent No. CN205074893U, applying date 2015-10-28, disclose a kind of crankshaft journal and throw
Ray machine, including base, backboard, board, first hydraulic cylinder, main shaft axle journal burnishing device, abrasive band fixture, connecting rod shaft neck polishing dress
Put, second hydraulic cylinder, abrasive band and work piece holder slide unit, it is characterised in that：The backboard and vertical welding on rear side of base, the machine
The chute and the slide rail of back plate surface that platform back opens up, which coordinate, to be installed, and described first hydraulic cylinder one end is connected with board and the first liquid
The cylinder pressure other end welds with backboard right-hand apron, installation main shaft axle journal burnishing device and the polishing of connecting rod shaft neck inside the board
Device, main shaft axle journal burnishing device and connecting rod the shaft neck burnishing device are connected through a screw thread installation abrasive band fixture, the work
The chute and the slide rail of susceptor surface that part fixture slide unit bottom opens up, which coordinate, to be installed, and described second hydraulic cylinder one end connects with backboard
Connect, the second hydraulic cylinder other end is connected with work piece holder slide unit.
Above-mentioned patent, which is realized once to be loaded, can polish the function of all axle journals, while the space that is loaded, fast and easy are loaded
Operation, is favorably improved production efficiency of equipment.But because the specification of various bent axles is different, the centre of gyration line and bent axle of lathe
Center line not on the same line, in polishing process, abrasive band easily follows the phenomenon that the rotation of bent axle is taken away, and influences to throw
Light effect, polish crankshaft journal complex operation.
Utility model content
The purpose of this utility model is to overcome the above-mentioned problems in the prior art, there is provided a kind of crankshaft polishing machine,
The device goes for the bent axle polishing process of different size model by the stroke pad changed on V-type clamp body, makes machine
The centre of gyration line of bed overlaps with the center line of bent axle, prevents abrasive band from following the rotation of bent axle to be pulled away, greatly improves bent axle
Surface roughness, suitable for the bent axle of different size, and it is reasonable in design, simple in construction, easy to operate, maintenance is easy, is manufactured into
This is low, and operating efficiency is high.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of crankshaft polishing machine, including afterbody V-type fixture, head V-type fixture, fuselage, burnishing device and mobile platform, its
It is characterised by：Afterbody V-type fixture and head V-type fixture, the afterbody V-type fixture and head V-type fixture are set on the fuselage
Between clamping have bent axle, stroke pad is placed with the afterbody V-type fixture and head V-type fixture, the stroke pad is set
Put between bent axle and afterbody V-type fixture and head V-type fixture, the burnishing device is set on a mobile platform, the movement
Platform activity is arranged on fuselage.
The burnishing device includes motor, abrasive band and segmental support, and one end of the segmental support is connected with driving wheel, the other end
Driven pulley, the driving wheel and motor connection are connected with, the driving wheel drives driven pulley by abrasive band.
The segmental support hinge on a mobile platform, and is provided with torsion spring at hinge, be provided with the driven pulley
Reel cage, counterweight is installed on the reel cage.
Bar hole is provided with the segmental support, the driven pulley is by bolts assemblies in bar hole.
Servomotor, guide rod and the screw mandrel parallel with guide rod are additionally provided with the fuselage, the servomotor is fixed
On fuselage, and one end of servomotor connection wire rod, one end of the mobile platform is provided with the through hole of guide rod cooperation, another
End is provided with the silk hole coordinated with screw mandrel.
Screw mandrel and the silk Kong Jun is driven using trapezoidal thread.
The stroke pad is bolted on afterbody V-type fixture and head V-type fixture.
The utility model has the advantages that.
1. adjusting the position of crankshaft center by increasing or reducing stroke pad, go for different size type
Number bent axle polishing process, the centre of gyration line of lathe is overlapped with the center line of bent axle, improve both rotation concentricity, prevent
Only abrasive band follows the rotation of bent axle to be pulled away, and greatly improves the surface roughness of bent axle, and reasonable in design, simple in construction, operation
Convenient, maintenance is easy, and manufacturing cost is low, and operating efficiency is high.
2. being driven by motor rotating driver has the abrasive band of annular, make revolution at a high speed motion abrasive band and the bent axle of revolution is entered
Row polishing, polishing is uniform, improves the finish of crankshaft surface, while improves polishing efficiency, shortens the time.
3. setting reel cage and counterweight by the driven pulley in segmental support one end, abrasive band is in the balancing weight of reel cage and its afterbody
The lower realization of effect is moved up and down, and abrasive band is polished along original radian of bent axle, keeps the circularity and cylindricity of bent axle, is completed
Automatic profiling.
4. by setting bar hole to install driven pulley on segmental support, abrasive band is convenient for changing, suitable for different sealing annular
Abrasive band, while the tightness in abrasive band can be adjusted.
5. mobile platform is set to be moved reciprocatingly relative to fuselage by screw rod transmission, simple in construction, handling ease, cost
It is low, transmission axial force is big, can self-locking, positioning precision it is high.
6. having by using trapezoidal thread, AutoLock feature, Bidirectional driving are good, wear-resisting and tightness is strong.
7. be bolted it is easy to loading and unloading, it is simple to operate.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is I structural representation gone out in Fig. 1.
Mark in figure for：1st, afterbody V-type fixture, 2, bent axle, 3, motor, 4, reel cage, 5, abrasive band, 6, driving wheel, 7, head
Portion's V-type fixture, 8, guide rod, 9, fuselage, 10, mobile platform, 11, stroke pad, 12, segmental support, 13, driven pulley, 14, screw mandrel.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Fig. 1 to 2, a kind of crankshaft polishing machine, including afterbody V-type fixture 1, head V-type fixture 7, fuselage 9, polishing
Device and mobile platform 10, set afterbody V-type fixture 1 and head V-type fixture 7 on the fuselage 9, the afterbody V-type fixture 1 with
Clamping has bent axle 2 between head V-type fixture 7, and stroke pad is placed with the afterbody V-type fixture 1 and head V-type fixture 7
11, the stroke pad 11 is arranged between bent axle 2 and afterbody V-type fixture 1 and head V-type fixture 7, and the burnishing device is set
On a mobile platform 10, the mobile platform 10 is movably arranged on fuselage 9.
Crankshaft polishing machine is provided with the main spindle box that lathe body 9, head V-type fixture 7 and afterbody V-type fixture 1 are attached separately to fuselage 9
With tailstock top, bent axle 2 is mounted between head V-type fixture 7 and afterbody V-type fixture 1, and briquetting compresses bent axle 2, and main spindle box power leads to
Cross head V-type clamp body 7 and pass to bent axle 2, it is another in the holding position being placed on one end of bent axle 2 on afterbody V-type fixture 1
End is placed on the holding position of head V-type fixture 7, then increase in the holding position of afterbody V-type fixture 1 and head V-type fixture 7 one or
The multiple stroke pads 11 of person, when the rotation of the polished place's rotation centerline and afterbody V-type fixture 1 and head V-type fixture 7 of bent axle 2
When turning center line coincidence, not in increase stroke pad 11, so as to ensure the concentricity of bent axle 2 and V-type fixture, afterbody V-type is pressed from both sides
Stroke pad 11 and bent axle 2, starting device, afterbody V-type fixture 1 and head V-type are stepped up in the holding position of tool 1 and head V-type fixture 7
Fixture 7 is rotated with dynamic crankshaft 2, and burnishing device moves left and right polishing on bent axle 2, and bent axle 2 is processed by shot blasting, passes through increase
Or stroke pad 11 is reduced to adjust the position at the center of bent axle 2, go for the buffer of bent axle 2 of different size model
Sequence, the centre of gyration line of lathe is overlapped with the center line of bent axle 2, improve the concentricity of both rotations, prevent abrasive band 5 from following song
The rotation of axle 2 is pulled away, and greatly improves the surface roughness of bent axle 2, and reasonable in design, simple in construction, easy to operate, and maintenance is held
Easily, manufacturing cost is low, and operating efficiency is high.
Embodiment 2,
As shown in Fig. 1 to 2, a kind of crankshaft polishing machine, including afterbody V-type fixture 1, head V-type fixture 7, fuselage 9, polishing
Device and mobile platform 10, set afterbody V-type fixture 1 and head V-type fixture 7 on the fuselage 9, the afterbody V-type fixture 1 with
Clamping has bent axle 2 between head V-type fixture 7, and stroke pad is placed with the afterbody V-type fixture 1 and head V-type fixture 7
11, the stroke pad 11 is arranged between bent axle 2 and afterbody V-type fixture 1 and head V-type fixture 7, and the burnishing device is set
On a mobile platform 10, the mobile platform 10 is movably arranged on fuselage 9.
The burnishing device includes motor 3, abrasive band 5 and segmental support 12, and one end of the segmental support 12 is connected with driving wheel
6, the other end is connected with driven pulley 13, and the driving wheel 6 is connected with motor 3, and the driving wheel 6 drives driven pulley by abrasive band 5
13。
The hinge of segmental support 12 on a mobile platform 10, and is provided with torsion spring at hinge, pacify on the driven pulley
Equipped with reel cage 4, counterweight is installed on the reel cage 4.
Crankshaft polishing machine is provided with the main spindle box that lathe body 9, head V-type fixture 7 and afterbody V-type fixture 1 are attached separately to fuselage 9
With tailstock top, bent axle 2 is mounted between head V-type fixture 7 and afterbody V-type fixture 1, and briquetting compresses bent axle 2, and main spindle box power leads to
Cross head V-type clamp body 7 and pass to bent axle 2, it is another in the holding position being placed on one end of bent axle 2 on afterbody V-type fixture 1
End is placed on the holding position of head V-type fixture 7, then increase in the holding position of afterbody V-type fixture 1 and head V-type fixture 7 one or
The multiple stroke pads 11 of person, when the rotation of the polished place's rotation centerline and afterbody V-type fixture 1 and head V-type fixture 7 of bent axle 2
When turning center line coincidence, not in increase stroke pad 11, so as to ensure the concentricity of bent axle 2 and V-type fixture, afterbody V-type is pressed from both sides
Stroke pad 11 and bent axle 2, starting device, afterbody V-type fixture 1 and head V-type are stepped up in the holding position of tool 1 and head V-type fixture 7
Fixture 7 is rotated with dynamic crankshaft 2, and burnishing device moves left and right polishing on bent axle 2, and bent axle 2 is processed by shot blasting, passes through increase
Or stroke pad 11 is reduced to adjust the position at the center of bent axle 2, go for the buffer of bent axle 2 of different size model
Sequence, the centre of gyration line of lathe is overlapped with the center line of bent axle 2, improve the concentricity of both rotations, prevent abrasive band 5 from following song
The rotation of axle 2 is pulled away, and greatly improves the surface roughness of bent axle 2, and reasonable in design, simple in construction, easy to operate, and maintenance is held
Easily, manufacturing cost is low, and operating efficiency is high.
Being driven by the rotating driver 6 of motor 3 has the abrasive band 5 of annular, makees bent axle of the revolution at a high speed motion abrasive band 5 to revolution
2 are polished, and polishing is uniform, improve the finish on the surface of bent axle 2, while improve polishing efficiency, shorten the time.
Reel cage 4 and counterweight, segmental support 12 and the hinge of mobile platform 10 are set by the driven pulley 13 in the one end of segmental support 12
Together, segmental support 12 by pivot hinge on a mobile platform 10, torsion spring is cased with axle, one end of torsion spring is stuck in bow
On shape frame 12, the other end is stuck in mobile platform 10, and reel cage 4 and counterweight drive one end of segmental support 12 relative on the work of segmental support 12
Lower circular motion, one end of segmental support 12 move downward, and are returned upwards under the restoring force effect of torsion spring, abrasive band 5 is being shaken
Realize and move up and down in the presence of the balancing weight of frame 4 and its afterbody, abrasive band 5 is polished along original radian of bent axle 2, is kept
The circularity and cylindricity of bent axle 2, automatic profiling is completed, motor 3, reel cage 4 and servomotor control by PLC, make sand
Follow the outer surface of bent axle 2 of revolution to move back and forth and be polished along original radian with 5, realize the outer surface of bent axle 2
Automatic polishing, improve production efficiency, convenient operation.
Embodiment 3
As shown in Fig. 1 to 2, a kind of crankshaft polishing machine, including afterbody V-type fixture 1, head V-type fixture 7, fuselage 9, polishing
Device and mobile platform 10, set afterbody V-type fixture 1 and head V-type fixture 7 on the fuselage 9, the afterbody V-type fixture 1 with
Clamping has bent axle 2 between head V-type fixture 7, and stroke pad is placed with the afterbody V-type fixture 1 and head V-type fixture 7
11, the stroke pad 11 is arranged between bent axle 2 and afterbody V-type fixture 1 and head V-type fixture 7, and the burnishing device is set
On a mobile platform 10, the mobile platform 10 is movably arranged on fuselage 9.
The burnishing device includes motor 3, abrasive band 5 and segmental support 12, and one end of the segmental support 12 is connected with driving wheel
6, the other end is connected with driven pulley 13, and the driving wheel 6 is connected with motor 3, and the driving wheel 6 drives driven pulley by abrasive band 5
13。
The hinge of segmental support 12 on a mobile platform 10, and is provided with torsion spring at hinge, pacify on the driven pulley
Equipped with reel cage 4, counterweight is installed on the reel cage 4.
Bar hole is provided with the segmental support 12, the driven pulley 13 is by bolts assemblies in bar hole.
Servomotor, guide rod 8 and the screw mandrel 14 parallel with guide rod 8, the servomotor are additionally provided with the fuselage 9
It is fixed on fuselage 9, and one end of servomotor connection wire rod 14, one end of the mobile platform 10 are provided with guide rod 8 and coordinated
Through hole, the other end be provided with screw mandrel 14 coordinate silk hole.
The screw mandrel 8 and silk Kong Jun are driven using trapezoidal thread.
The stroke pad 11 is bolted on afterbody V-type fixture 1 and head V-type fixture 7.
Crankshaft polishing machine is provided with the main spindle box that lathe body 9, head V-type fixture 7 and afterbody V-type fixture 1 are attached separately to fuselage 9
With tailstock top, bent axle 2 is mounted between head V-type fixture 7 and afterbody V-type fixture 1, and briquetting compresses bent axle 2, and main spindle box power leads to
Cross head V-type clamp body 7 and pass to bent axle 2, it is another in the holding position being placed on one end of bent axle 2 on afterbody V-type fixture 1
End is placed on the holding position of head V-type fixture 7, then increase in the holding position of afterbody V-type fixture 1 and head V-type fixture 7 one or
The multiple stroke pads 11 of person, when the rotation of the polished place's rotation centerline and afterbody V-type fixture 1 and head V-type fixture 7 of bent axle 2
When turning center line coincidence, not in increase stroke pad 11, so as to ensure the concentricity of bent axle 2 and V-type fixture, afterbody V-type is pressed from both sides
Stroke pad 11 and bent axle 2, starting device, afterbody V-type fixture 1 and head V-type are stepped up in the holding position of tool 1 and head V-type fixture 7
Fixture 7 is rotated with dynamic crankshaft 2, and burnishing device moves left and right polishing on bent axle 2, and bent axle 2 is processed by shot blasting, passes through increase
Or stroke pad 11 is reduced to adjust the position at the center of bent axle 2, go for the buffer of bent axle 2 of different size model
Sequence, the centre of gyration line of lathe is overlapped with the center line of bent axle 2, improve the concentricity of both rotations, prevent abrasive band 5 from following song
The rotation of axle 2 is pulled away, and greatly improves the surface roughness of bent axle 2, and reasonable in design, simple in construction, easy to operate, and maintenance is held
Easily, manufacturing cost is low, and operating efficiency is high.
Being driven by the rotating driver 6 of motor 3 has the abrasive band 5 of annular, makees bent axle of the revolution at a high speed motion abrasive band 5 to revolution
2 are polished, and polishing is uniform, improve the finish on the surface of bent axle 2, while improve polishing efficiency, shorten the time.
Reel cage 4 and counterweight, segmental support 12 and the hinge of mobile platform 10 are set by the driven pulley 13 in the one end of segmental support 12
Together, segmental support 12 by pivot hinge on a mobile platform 10, torsion spring is cased with axle, one end of torsion spring is stuck in bow
On shape frame 12, the other end is stuck in mobile platform 10, and reel cage 4 and counterweight drive one end of segmental support 12 relative on the work of segmental support 12
Lower circular motion, one end of segmental support 12 move downward, and are returned upwards under the restoring force effect of torsion spring, abrasive band 5 is being shaken
Realize and move up and down in the presence of the balancing weight of frame 4 and its afterbody, abrasive band 5 is polished along original radian of bent axle 2, is kept
The circularity and cylindricity of bent axle 2, automatic profiling is completed, motor 3, reel cage 4 and servomotor control by PLC, make sand
Follow the outer surface of bent axle 2 of revolution to move back and forth and be polished along original radian with 5, realize the outer surface of bent axle 2
Automatic polishing, improve production efficiency, convenient operation.
By setting bar hole to install driven pulley 13 on segmental support 12, abrasive band 5 is convenient for changing, suitable for different sealing ring
The abrasive band 5 of shape, while the tightness in abrasive band 5 can be adjusted.
By screw mandrel 14 transmission mobile platform 10 is moved reciprocatingly relative to fuselage 9, simple in construction, handling ease, into
This is low, transmission axial force is big, can self-locking, positioning precision height.
Have that AutoLock feature, Bidirectional driving are good, wear-resisting and tightness is strong by using trapezoidal thread.
Be bolted it is easy to loading and unloading, it is simple to operate.
Embodiment described above only expresses the embodiment of the application, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the application protection domain can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, on the premise of technical scheme design is not departed from, various modifications and improvements can be made, these belong to this
The protection domain of application.
Claims (7)
1. a kind of crankshaft polishing machine, including afterbody V-type fixture（1）, head V-type fixture（7）, fuselage（9）, burnishing device and movement
Platform（10）, it is characterised in that：The fuselage（9）Upper setting afterbody V-type fixture（1）With head V-type fixture（7）, the afterbody V
Type fixture（1）With head V-type fixture（7）Between clamping have bent axle（2）, the afterbody V-type fixture（1）With head V-type fixture（7）
On be placed with stroke pad（11）, the stroke pad（11）It is arranged on bent axle（2）With afterbody V-type fixture（1）With head V-type
Fixture（7）Between, the burnishing device is arranged on mobile platform（10）On, the mobile platform（10）It is movably arranged on fuselage
（9）On.
A kind of 2. crankshaft polishing machine as claimed in claim 1, it is characterised in that：The burnishing device includes motor（3）, abrasive band
（5）With segmental support (12), one end of the segmental support (12) is connected with driving wheel（6）, the other end is connected with driven pulley（13）, institute
State driving wheel（6）With motor（3）Connection, the driving wheel（6）Pass through abrasive band（5）Drive driven pulley（13）.
A kind of 3. crankshaft polishing machine as claimed in claim 2, it is characterised in that：The segmental support（12）Hinge is in mobile platform
（10）On, and torsion spring is provided with hinge, reel cage is installed on the driven pulley（4）, the reel cage（4）On be provided with and match somebody with somebody
Weight.
A kind of 4. crankshaft polishing machine as claimed in claim 2, it is characterised in that：Bar shaped is provided with the segmental support (12)
Hole, the driven pulley（13）By bolts assemblies in bar hole.
A kind of 5. crankshaft polishing machine as claimed in claim 1, it is characterised in that：The fuselage（9）On be additionally provided with servo electricity
Machine, guide rod（8）And and guide rod（8）Parallel screw mandrel（14）, the servomotor is fixed on fuselage（9）On, and servomotor
Connection wire rod（14）One end, the mobile platform（10）One end be provided with guide rod（8）The through hole of cooperation, the other end are provided with
With screw mandrel（14）The silk hole of cooperation.
A kind of 6. crankshaft polishing machine as claimed in claim 5, it is characterised in that：The screw mandrel（8）With silk Kong Jun using trapezoidal
Screw-driven.
A kind of 7. crankshaft polishing machine as claimed in claim 1, it is characterised in that：The stroke pad（11）It is bolted
In afterbody V-type fixture（1）With head V-type fixture（7）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720449050.7U CN206662988U (en) | 2017-04-26 | 2017-04-26 | A kind of crankshaft polishing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720449050.7U CN206662988U (en) | 2017-04-26 | 2017-04-26 | A kind of crankshaft polishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206662988U true CN206662988U (en) | 2017-11-24 |
Family
ID=60370889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720449050.7U Active CN206662988U (en) | 2017-04-26 | 2017-04-26 | A kind of crankshaft polishing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN206662988U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581766A (en) * | 2018-05-28 | 2018-09-28 | 河南华洋发动机制造有限公司 | Engine crankshaft processing burnishing device |
| CN109968179A (en) * | 2019-05-10 | 2019-07-05 | 滨州鲁德曲轴有限责任公司 | A kind of crankshaft polishing support device of included clearing function |
| CN111571334A (en) * | 2020-05-09 | 2020-08-25 | 黄淮学院 | Intelligent automatic grinding device of bent axle |
-
2017
- 2017-04-26 CN CN201720449050.7U patent/CN206662988U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581766A (en) * | 2018-05-28 | 2018-09-28 | 河南华洋发动机制造有限公司 | Engine crankshaft processing burnishing device |
| CN109968179A (en) * | 2019-05-10 | 2019-07-05 | 滨州鲁德曲轴有限责任公司 | A kind of crankshaft polishing support device of included clearing function |
| CN111571334A (en) * | 2020-05-09 | 2020-08-25 | 黄淮学院 | Intelligent automatic grinding device of bent axle |
| CN111571334B (en) * | 2020-05-09 | 2021-06-04 | 黄淮学院 | Intelligent automatic grinding device of bent axle |
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