CN110355631A - A kind of axle box axis hole automatic sander and polishing process - Google Patents
A kind of axle box axis hole automatic sander and polishing process Download PDFInfo
- Publication number
- CN110355631A CN110355631A CN201910794643.0A CN201910794643A CN110355631A CN 110355631 A CN110355631 A CN 110355631A CN 201910794643 A CN201910794643 A CN 201910794643A CN 110355631 A CN110355631 A CN 110355631A
- Authority
- CN
- China
- Prior art keywords
- axle box
- axis hole
- index dial
- mould group
- linear mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0046—Column grinding machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The application provides a kind of axle box axis hole automatic sander and polishing process, including feeding device and is arranged in the grinding device of feeding device side；Feeding device includes rotatable first index dial, and the first index dial is equipped with object disposing platform, and object disposing platform two sides are equipped with a pair of rotatable second index dial, can movably be connected to positioning plate on the second index plate；Grinding device includes linear mould group, and mill bar mechanism is connected in linear mould group, and mill bar mechanism is movably disposed in the top of object disposing platform by linear mould group.The beneficial effect of the application is: axle box is placed on positioning plate, axle box is moved to the appropriate location of corresponding grinding device by the first indexing disc spins, mill bar mechanism is moved in the axis hole for protruding into axle box by linear mould group, second indexing disc spins drive axis hole circle rotation that mill bar mechanism is polished in axle hole inner circle week, complete the automatically grinding work of axis hole, without manually participating in, working efficiency is increased, work quality is improved.
Description
Technical field
This disclosure relates to grinding technology field, and in particular to a kind of axle box axis hole automatic sander and polishing process.
Background technique
Axle box is typically complex as maintenance part, shape, and the axle box axis hole reprocessed has oil at edge and inside
Dirty or metal rusty stain, the presence of greasy dirt and metal rusty stain cause bad shadow to the maintenance of axle box and affect axle box
It uses, it is therefore desirable to polish the axis hole of axle box, and the polishing position of axle box and polishing region size requirements
It is general relatively stringenter.
The polishing of present axle box axis hole relies primarily on manual polishing, and manual polishing inefficiency, precision is not high, and artificial
Higher cost.
Summary of the invention
The purpose of the application is in view of the above problems, providing a kind of axle box axis hole automatic sander and polishing process.
In a first aspect, the application provides a kind of axle box axis hole automatic sander, including feeding device and setting in institute
State the grinding device of feeding device side；The feeding device includes rotatable first index dial, on first index dial
Equipped with object disposing platform, the object disposing platform two sides are equipped with a pair of rotatable second index dial, can live on second index plate
Dynamic ground can be connected to positioning plate；The grinding device includes linear mould group, is connected with mill bar mechanism, the mill in the linear mould group
Linkage is movably disposed in the top of the object disposing platform by the linear mould group.
According to technical solution provided by the embodiments of the present application, the mill bar mechanism includes support frame, support frame as described above connection
In the linear mould group, support frame as described above is equipped with motor, and the motor output end is connected with the rotary shaft being vertically arranged, institute
It states rotary shaft and is connected with polishing brush head far from the end of the motor.
According to technical solution provided by the embodiments of the present application, cylinder is equipped between the linear mould group and support frame as described above,
The piston output end of the cylinder is movably connected on support frame as described above.
According to technical solution provided by the embodiments of the present application, the linear mould group is set as two Axle mould groups, movably drives
The mill bar mechanism is moved to move horizontally or vertical shift.
According to technical solution provided by the embodiments of the present application, the object disposing platform is centrally disposed in first index dial
Axial line on.
According to technical solution provided by the embodiments of the present application, a pair of second index dial is symmetrically disposed in the glove
The two sides at the center of platform.
According to technical solution provided by the embodiments of the present application, the positioning plate is equipped with card interface and for being socketed axle box
Positioning column, the positioning plate is movably connected on second index dial by the card interface.
According to technical solution provided by the embodiments of the present application, the feeding device further includes a pair of second driving mechanism, and one
The second index dial rotating Vortex is movably driven respectively to second driving mechanism.
Second aspect, the application provide a kind of axle box axis hole automatically grinding method, comprising the following steps:
Axle box is socketed on the positioning column on second index dial so that the center of the axis hole of the axle box with
The central coaxial heart of second index dial；
First 180 ° of disc spins of the indexing is driven, so that the axle box being socketed on the second index dial is rotated to corresponding institute
State the lower section of rotary shaft；
The linear mould group vertical shift is driven, so that the polishing brush head protrudes into corresponding first setting height in the axis hole
Spend position；
The linear mould group is driven to move horizontally, so that the edge of the polishing brush head is fitted in the inner wall of the axis hole
On；
Driving is socketed the second indexing disc spins of the axle box, so that axle box carries out level by the center of circle of axis hole center
Rotation；
Start the motor, so that the polishing brush head carries out the circle of inner wall to the axis hole of the first set height position
Week polishing, the axle box, which rotates a circle, completes the polishing that the shaft hole inner wall one of the first set height position encloses.
According to technical solution provided by the embodiments of the present application, described first is driven to index after 180 ° of disc spins, further includes:
The axle box of next pre- polishing is socketed on the positioning plate of another second index dial.
Beneficial effects of the present invention: the application provides a kind of axle box axis hole automatic sander, including feeding device and
The grinding device of the feeding device side is set；The feeding device includes rotatable first index dial, and described first
Index dial is equipped with object disposing platform, and the object disposing platform two sides are equipped with a pair of rotatable second index dial, second indexing
Positioning plate can be movably connected on plate；The grinding device includes linear mould group, is connected with mill bar machine in the linear mould group
Structure, the mill bar mechanism are movably disposed in the top of the object disposing platform by the linear mould group.
Axle box is placed on positioning plate, axle box is moved to the appropriate of corresponding grinding device by the first indexing disc spins
Mill bar mechanism is moved in the axis hole for protruding into axle box by position, linear mould group, and the second indexing disc spins drive the rotation of axis hole circumference
Turn so that mill bar mechanism polishes in axle hole inner circle week, the automatically grinding work for completing axis hole increases work without manually participating in
Efficiency improves work quality.
According to technical solution provided by the embodiments of the present application, the mill bar mechanism includes support frame, support frame as described above connection
In the linear mould group, support frame as described above is equipped with motor, and the motor output end is connected with the rotary shaft being vertically arranged, institute
It states rotary shaft and is connected with polishing brush head far from the end of the motor.
The rotation of motor driven rotary shaft, rotary shaft end are equipped with polishing brush head, are protruded into polishing brush head by linear mould group
It is fitted on the inner wall of axis hole in axis hole and by polishing brush head outer edge, as axis hole is beaten in the rotation completion of polishing brush head
Mill.
According to technical solution provided by the embodiments of the present application, cylinder is equipped between the linear mould group and support frame as described above,
The piston output end of the cylinder is movably connected on support frame as described above.
Cylinder is equipped between linear mould group and the support frame of mill bar mechanism, it can be enterprising in shaft hole inner wall to abrasive brush head
Buffer function is played in the radial direction in polishing brush head when row rotary-grinding, avoids carrying out between polishing brush head and shaft hole inner wall
Hard polishing, ensure that the safety of bruting process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the application；
Fig. 2 is the flow diagram of second of embodiment of the application；
Label character described in figure indicates are as follows: the 110, first index dial；120, object disposing platform；130, the second index dial；
140, positioning plate；141, positioning column；210, linear mould group；211, Z axis mould group；212, X-axis mould group；221, support frame；222, electric
Machine；223, rotary shaft；224, polishing brush head；225, cylinder.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing to the application into
Row detailed description, the description of this part be only it is exemplary and explanatory, should not have any limitation to the protection scope of the application
Effect.
It is as shown in Figure 1 the first embodiment of the application, including feeding device and setting in the feeding device one
The grinding device of side；The feeding device includes rotatable first index dial 110, and first index dial 110 is equipped with and sets
Object platform 120,120 two sides of object disposing platform are equipped with a pair of rotatable second index dial 130, can on second index plate
Positioning plate 140 can be actively connected to；The grinding device includes linear mould group 210, is connected with mill bar in the linear mould group 210
Mechanism, the mill bar mechanism are movably disposed in the top of the object disposing platform 120 by the linear mould group 210.
In the present embodiment, the feeding device further includes a pair of second driving mechanism (not shown), and a pair of described the
Two driving mechanisms movably drive 130 rotating Vortex of the second index dial respectively.
In the present embodiment, the first index dial 110 is placed on the table, and it is flat that glove is fixed on the first index dial 110
Platform 120,120 two sides of object disposing platform are oppositely arranged a pair of second index dial 130, pass through positioning plate on a pair of second index dial 130
140 can be arranged axle box respectively, have axis hole on axle box.In the present embodiment, the first index dial 110 is in its first driving mechanism
Control under rotate, the second index dial 130 is rotatable under the second driving mechanisms control.In the present embodiment, on object disposing platform 120
Two the second index dials 130 are set, are arranged the axle box for carrying out sanding operation on one of them second index dial 130, separately
The axle box of next pre- polishing is arranged on one the second index dial 130.After an axle box is polished, the first index dial
The axle box blanking for finishing polishing after 110 180 ° of rotations, while the axle box of pre- polishing is rotated to corresponding brush head of polishing
In addition 224 position covers next one axle box on the second unloaded index dial 130 to prepare polishing behaviour after blanking
Make.In the present embodiment, the first index dial 110 rotates 180 ° every time during loading and unloading.
Axle box is placed on positioning plate 140, axle box is moved to corresponding grinding device by the rotation of the first index dial 110
Appropriate location, mill bar mechanism is moved in the axis hole for protruding into axle box by linear mould group 210, and the second index dial 130 rotates band
Shaft hole circle rotation makes mill bar mechanism polish in axle hole inner circle week, the automatically grinding work of axis hole is completed, without artificial ginseng
With increase working efficiency, improve work quality.
In a preferred embodiment, the mill bar mechanism includes support frame 221, and support frame as described above 221 is connected to the line
Property mould group 210 on, support frame as described above 221 is equipped with motor 222, and 222 output end of motor is connected with the rotation being vertically arranged
Axis 223, the rotary shaft 223 are connected with polishing brush head 224 far from the end of the motor 222.
Motor 222 drives rotary shaft 223 to rotate, and 223 end of rotary shaft is equipped with polishing brush head 224, passes through linear mould group 210
Polishing brush head 224 is protruded into axis hole and polishing 224 outer edge of brush head is fitted on the inner wall of axis hole, with polishing brush head
The polishing to axis hole is completed in 224 rotation.
Preferably, in above preferred embodiment, cylinder is equipped between the linear mould group 210 and support frame as described above 221
225, the piston output end of the cylinder 225 is movably connected on support frame as described above 221.
It is equipped with cylinder 225 between linear mould group 210 and the support frame 221 of mill bar mechanism, can exist to abrasive brush head 224
Buffer function is played in the radial direction in polishing brush head 224 when carrying out rotary-grinding on shaft hole inner wall, avoids polishing brush head 224
It is polished firmly between shaft hole inner wall, ensure that the safety of bruting process.
In the present embodiment, the linear mould group 210 is set as two Axle mould groups, movably drives mill bar mechanism water
Translation is moved or vertical shift.Linear mould group 210 includes orthogonal X-axis mould group 212 and Z axis mould group 211, the connection of mill bar mechanism
In X-axis mould group 212, X-axis mould group 212 can drive mill bar mechanism to move horizontally, and Z axis mould group 211 passes through driving X-axis mould group 212
Vertical shift and then drive mill bar mechanism vertical shift.
In a preferred embodiment, the axial line for being centrally disposed in first index dial 110 of the object disposing platform 120
On, a pair of second index dial 130 is symmetrically disposed in the two sides at the center of the object disposing platform 120.This preferred embodiment
The purpose of setting are as follows: carried out in 180 ° of rotary courses every time in the first index dial 110, each second index dial 130 revolves every time
Go to identical position.
In a preferred embodiment, the positioning plate 140 is equipped with card interface and the positioning column for being socketed axle box
141, the positioning plate 140 is movably connected on second index dial 130 by the card interface.
In the present embodiment, center and the institute of the axis hole of the axle box should be made when placing axle box on positioning plate 140
The central coaxial heart for stating the second index dial 130 is revolved using the center of axis hole as the center of circle when guaranteeing the rotation of the second index dial 130
Turn.
It is illustrated in figure 2 second of embodiment of the application, is the automatically grinding method of axle box axis hole, to axle box
For when first set height position of axis hole is polished, comprising the following steps:
On S10, the positioning column 141 being socketed in axle box on one the second index dial 130, so that the axis of the axle box
The central coaxial heart at the center in hole and second index dial 130.
S20, driving first index dial 110 rotate 180 °, so that the axle box rotation being socketed on the second index dial 130
Go to the lower section of the corresponding rotary shaft 223.
It further include that the axle box of next pre- polishing is socketed in another described second index dial 130 after this step
Positioning plate 140 on so that next time the first index dial 110 rotate 180 ° when this axle box can carry out sanding operation.
S30, driving linear 210 vertical shift of mould group, correspond to so that the polishing brush head 224 protrudes into the axis hole
First set height position.
In the present embodiment, the Z axis mould group 211 in linear mould group 210 is driven to carry out moving up and down for vertical direction first,
So that polishing brush head 224 extend into the axial centerline in axis hole, and rest on the first setting height of distance axis hole bottom
Position, brush head 224 of next polishing will carry out the polishing enclosed of circumference one of inner wall in the first set height position to axis hole.
S40, the driving linear mould group 210 move horizontally, so that the edge of the polishing brush head 224 is fitted in the axis
On the inner wall in hole.
In the present embodiment, it drives and is moved left and right in 212 horizontal direction of X-axis mould group in linear mould group 210, so that polishing
Brush head 224 is moved to fitting and is connected on the inner wall of axis hole, is ready for polishing.
S50, driving are socketed the second index dial 130 rotation of the axle box, so that axle box is using axis hole center as the center of circle
It is rotated horizontally.
S60, the starting motor 222 so that the polishing brush head 224 to the axis hole of the first set height position into
The circumference of row inner wall is polished, and the axle box, which rotates a circle, completes the polishing that the shaft hole inner wall one of the first set height position encloses.
Start motor 222, polishing brush head 224 starts horizontal circular-rotation, and brush head 224 of polishing is constantly to the axis hole being rotating
Inner wall is polished, as the rotary-grinding brush head 224 of axis hole polishes to one week of shaft hole inner wall.Due to abrasive brush at this time
First 224 are fixed on the first set height position in axis hole, thus axis hole rotate a circle after complete the first set height position
Shaft hole inner wall one enclose polishing.
Next, continuing that Z axis mould group 211 is driven to carry out moving up and down for vertical direction, so that polishing brush head 224 carries out it
The shaft hole inner wall of his height and position is polished.
Specific examples are used herein to illustrate the principle and implementation manner of the present application, the explanation of above example
It is merely used to help understand the present processes and its core concept.The above is only the preferred embodiment of the application, is answered
When pointing out due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the common skill of the art
For art personnel, under the premise of not departing from the application principle, several improvement, retouching or variation can also be made, can also be incited somebody to action
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or the not improved structure by application
Think and technical solution directly applies to other occasions, is regarded as the protection scope of the application.
Claims (10)
1. a kind of axle box axis hole automatic sander, which is characterized in that including feeding device and be arranged in the feeding device
The grinding device of side；
The feeding device includes rotatable first index dial (110), and first index dial (110) is equipped with object disposing platform
(120), object disposing platform (120) two sides are equipped with a pair of rotatable second index dial (130), can on second index plate
Positioning plate (140) can be actively connected to；
The grinding device includes linear mould group (210), is connected with mill bar mechanism, the mill bar on the linear mould group (210)
Mechanism is movably disposed in the top of the object disposing platform (120) by the linear mould group (210).
2. axle box axis hole automatic sander according to claim 1, which is characterized in that the mill bar mechanism includes support
Frame (221), support frame as described above (221) are connected on the linear mould group (210), and support frame as described above (221) is equipped with motor
(222), motor (222) output end is connected with the rotary shaft (223) being vertically arranged, and the rotary shaft (223) is far from described
The end of motor (222) is connected with polishing brush head (224).
3. axle box axis hole automatic sander according to claim 2, which is characterized in that the linear mould group (210) with
Cylinder (225) are equipped between support frame as described above (221), the piston output end of the cylinder (225) is movably connected described
On support frame (221).
4. axle box axis hole automatic sander according to claim 1, which is characterized in that the linear mould group (210) sets
Two Axle mould groups are set to, the mill bar mechanism is movably driven to move horizontally or vertical shift.
5. axle box axis hole automatic sander according to claim 1, which is characterized in that the object disposing platform (120)
It is centrally disposed on the axial line of first index dial (110).
6. axle box axis hole automatic sander according to claim 5, which is characterized in that a pair of second index dial
(130) two sides at the center of the object disposing platform (120) are symmetrically disposed in.
7. axle box axis hole automatic sander according to claim 1, which is characterized in that set on the positioning plate (140)
There are card interface and the positioning column (141) for being socketed axle box, the positioning plate (140) is movably blocked by the card interface
It connects on second index dial (130).
8. axle box axis hole automatic sander according to claim 1, which is characterized in that the feeding device further includes one
To the second driving mechanism, a pair of second driving mechanism movably drives second index dial (130) to revolve in the same direction respectively
Turn.
9. a kind of polishing process using sander described in any one of claim 1-8, which is characterized in that including following
Step:
Axle box is socketed on the positioning column (141) on second index dial (130), so that the axis hole of the axle box
The central coaxial heart at center and second index dial (130)；
Drive first index dial (110) to rotate 180 ° so that the axle box being socketed on the second index dial (130) rotate to
The lower section of the corresponding rotary shaft (223)；
Linear mould group (210) vertical shift is driven, so that the polishing brush head (224) is protruded into corresponding first in the axis hole
Set height position；
The linear mould group (210) is driven to move horizontally, so that the edge of polishing brush head (224) is fitted in the axis hole
On inner wall；
Driving is socketed the second index dial (130) rotation of the axle box, so that axle box carries out water by the center of circle of axis hole center
Flat rotation；
Start the motor (222), so that polishing brush head (224) is in the axis hole progress of the first set height position
The circumference of wall is polished, and the axle box, which rotates a circle, completes the polishing that the shaft hole inner wall one of the first set height position encloses.
10. axle box axis hole automatically grinding method according to claim 9, which is characterized in that driving first indexing
Disk (110) rotates after 180 °, further includes: the axle box of next pre- polishing is socketed in another second index dial
(130) on positioning plate (140).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910794643.0A CN110355631A (en) | 2019-08-27 | 2019-08-27 | A kind of axle box axis hole automatic sander and polishing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910794643.0A CN110355631A (en) | 2019-08-27 | 2019-08-27 | A kind of axle box axis hole automatic sander and polishing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110355631A true CN110355631A (en) | 2019-10-22 |
Family
ID=68224315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910794643.0A Pending CN110355631A (en) | 2019-08-27 | 2019-08-27 | A kind of axle box axis hole automatic sander and polishing process |
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| Country | Link |
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| CN (1) | CN110355631A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113427357A (en) * | 2021-06-22 | 2021-09-24 | 三峡大学 | Metal shell polishing system and polishing method thereof |
| CN113798953A (en) * | 2021-08-27 | 2021-12-17 | 龙兵 | Edge grinding device is used in plastic slab production |
-
2019
- 2019-08-27 CN CN201910794643.0A patent/CN110355631A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113427357A (en) * | 2021-06-22 | 2021-09-24 | 三峡大学 | Metal shell polishing system and polishing method thereof |
| CN113798953A (en) * | 2021-08-27 | 2021-12-17 | 龙兵 | Edge grinding device is used in plastic slab production |
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