CN113211307A - Swing grinding head of flat polishing machine - Google Patents
Swing grinding head of flat polishing machine Download PDFInfo
- Publication number
- CN113211307A CN113211307A CN202110574166.4A CN202110574166A CN113211307A CN 113211307 A CN113211307 A CN 113211307A CN 202110574166 A CN202110574166 A CN 202110574166A CN 113211307 A CN113211307 A CN 113211307A
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- Prior art keywords
- sleeve
- rotating shaft
- shaft
- transmission shaft
- transmission
- 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
- 238000005498 polishing Methods 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 68
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 238000007494 plate polishing Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000007517 polishing process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/002—Grinding heads
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- 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
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention discloses a swing grinding head of a flat polishing machine, which comprises a transmission shaft, a bracket, a telescopic part, a rotating shaft, a grinding wheel, a first sleeve, a telescopic part, a second sleeve and a mounting sleeve seat, wherein: the first sleeve is fixed on the support, the transmission shaft is rotatably installed in the first sleeve, the mounting sleeve seat is fixed on the support, the second sleeve is horizontally and slidably installed in the mounting sleeve seat, and the rotating shaft is rotatably installed in the second sleeve; one end of the rotating shaft, which is opposite to the transmission shaft, is arranged on the transmission shaft in a sliding way along the axis of the rotating shaft, and the part of the rotating shaft, which is matched with the transmission shaft, is provided with a convex part which extends along the rotating shaft or the transmission radial direction, so that the rotating shaft drives the transmission shaft to rotate when rotating; the telescopic piece is arranged on the mounting sleeve seat and is used for driving the second sleeve and the rotating shaft to do reciprocating motion along the axial direction of the rotating shaft; the grinding wheel is arranged on the part, far away from the rotating shaft, of the mounting shaft and extending out of the second sleeve. According to the invention, the swing grinding head of the flat polishing machine can avoid the generation of lines between two adjacent grinding paths, and the grinding effect is improved.
Description
Technical Field
The invention relates to the technical field of part polishing equipment, in particular to a swing grinding head of a flat plate polishing machine.
Background
The polishing process is currently used in various industries, and the commonly used mechanical polishing machine can be divided into the following parts due to the difference of polishing grinding heads: a grinding wheel polisher, a belt sander, etc. The grinding wheel in the existing grinding wheel polishing process only rotates relative to parts, and the polishing piece horizontally moves on the workbench to finish surface polishing of the polishing piece, so that grains along the horizontal moving direction of the polishing piece are often formed between one polishing track and the other polishing track, and the surface polishing effect is influenced.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a swing grinding head of a flat-plate polishing machine.
The invention provides a swing grinding head of a flat polishing machine, which comprises a transmission shaft, a support, an expansion piece, a rotating shaft, a grinding wheel, a first sleeve, an expansion piece, a second sleeve and a mounting sleeve seat, wherein:
the first sleeve is fixed on the bracket, the transmission shaft is rotatably arranged in the first sleeve,
the mounting sleeve seat is fixed on the support, the second sleeve is horizontally and slidably mounted in the mounting sleeve seat, the rotating shaft is rotatably mounted in the second sleeve, and the rotating shaft and the rotating axis of the transmission shaft are overlapped;
one end of the rotating shaft, which is opposite to the transmission shaft, is arranged on the transmission shaft in a sliding way along the axis of the rotating shaft, and the part of the rotating shaft, which is matched with the transmission shaft, is provided with a convex part which extends along the rotating shaft or the transmission radial direction, so that the rotating shaft drives the transmission shaft to rotate when rotating;
the telescopic piece is arranged on the mounting sleeve seat and is used for driving the second sleeve and the rotating shaft to do reciprocating motion along the axial direction of the rotating shaft;
the one end that the transmission shaft was kept away from to the installation axle extends the second sleeve, and the grinding wheel is installed and is kept away from the pivot at the installation axle and extend the part of second sleeve.
As a further optimized scheme of the invention, the part of the rotating shaft matched with the transmission shaft is an external spline shaft, the part of the transmission shaft matched with the rotating shaft is provided with an internal spline hole, and the internal spline hole is matched with the external spline shaft.
As a further optimized scheme of the invention, two groups of bearings are arranged between the second sleeve and the rotating shaft, and the two groups of bearings are respectively positioned at two ends of the second sleeve.
As a further optimized scheme of the invention, the outer diameter and the inner diameter of the two groups of bearings are not equal.
As a further optimized scheme of the invention, the rotating shaft is provided with a first shaft shoulder and a second shaft shoulder, and the first shaft shoulder and the second shaft shoulder are respectively used for positioning the two groups of bearings.
As a further optimized scheme of the invention, one group of bearings between the second sleeve and the rotating shaft are deep groove ball bearings, and the other group of bearings are two angular contact bearings which are oppositely arranged.
As a further optimized scheme of the invention, one end of the second sleeve, which is far away from the grinding wheel, is provided with an extension plate, and the extension plate is connected with the telescopic piece.
As a further optimized scheme of the invention, a driving wheel is fixed at one end of the transmission shaft, which is far away from the grinding wheel.
As a further preferred aspect of the invention, the displacement of the grinding wheel reciprocation is less than one-half of the grinding wheel width.
According to the swing grinding head of the flat plate polishing machine, the rotating shaft and the grinding wheel on the rotating shaft are driven to reciprocate along the axis direction of the rotating shaft through the telescopic piece, so that the grinding wheel horizontally slides relative to the grinding piece while rotating relative to the grinding piece in the grinding process, grinding lines are prevented from being generated, and the grinding effect is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is a schematic structural view of the grinding machine provided with the grinding wheel.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The swinging grinding head of the flat plate polishing machine shown in fig. 1-3 comprises a transmission shaft 1, a bracket 2, an expansion piece 3, a rotating shaft 4, a grinding wheel 5, a first sleeve 6, an expansion piece 3, a second sleeve 7 and a mounting sleeve seat 8, wherein:
the first sleeve 6 is fixed on the support 2, the transmission shaft 1 is rotatably installed in the first sleeve 6, the transmission shaft 1 is connected with the first sleeve 6 through bearings, two groups of bearings are arranged between the first sleeve 6 and the transmission shaft 1, and the two groups of bearings are deep groove ball bearings;
the mounting sleeve seat 8 is fixed on the bracket 2 by a welding mode, the second sleeve 7 is horizontally and slidably mounted in the mounting sleeve seat 8, the mounting sleeve seat 8 is provided with a sliding hole, the second sleeve 7 is coaxially and slidably mounted in the sliding hole and penetrates through the sliding hole, the rotating shaft 4 is rotatably mounted in the second sleeve 7 through a bearing, two groups of bearings are arranged between the second sleeve 7 and the rotating shaft 4, the two groups of bearings are respectively positioned at two ends of the second sleeve 7, the outer diameter and the inner diameter of the two groups of bearings are not equal, the rotating shaft 4 is provided with a first shaft shoulder 40 and a second shaft shoulder 41, the first shaft shoulder 40 and the second shaft shoulder 41 are respectively used for positioning the two groups of bearings, one group of bearings between the second sleeve 7 and the rotating shaft 4 is a deep groove ball bearing, the other group of bearings is two opposite angular contact bearings, the two opposite angular contact bearings are mounted at one end of the second sleeve 7 far away from the transmission shaft 1, the deep groove ball bearing is mounted at one end of the second sleeve 7 opposite to the transmission shaft 1, and the rotating shaft 4 is superposed with the rotating axis of the transmission shaft 1;
one end, opposite to the transmission shaft 1, of the rotating shaft 4 is slidably mounted on the transmission shaft 1 along the axis of the rotating shaft 4, a part, matched with the transmission shaft 1, of the rotating shaft 4 is provided with a protruding part extending along the rotating shaft 4 or the transmission radial direction, so that the rotating shaft 4 drives the transmission shaft 1 to rotate when rotating, in the embodiment, the part, matched with the transmission shaft 1, of the rotating shaft 4 is an external spline shaft, the part, matched with the rotating shaft 4, of the transmission shaft 1 is provided with an internal spline hole 10, and the internal spline hole 10 is matched with;
the extensible member 3 can be an electric cylinder, an air cylinder, a screw rod sliding block mechanism and other transmission mechanisms in the prior art, in the embodiment, the extensible member 3 is an electric cylinder, the transmission precision is high, the installation and the disassembly are convenient, the extensible member 3 is installed on the installation sleeve seat 8 and is used for driving the second sleeve 7 and the rotating shaft 4 to do reciprocating motion along the axial direction of the rotating shaft 4, one end, away from the grinding wheel 5, of the second sleeve 7 is provided with an extension plate 9, the extensible end of the extensible member 3 is fixed with the extension plate 9, and the position, in which the extensible member 3 drives the grinding wheel 5 to do reciprocating motion, is smaller than one half of the width of the grinding wheel 5;
one end of the mounting shaft, which is far away from the transmission shaft 1, extends out of a second sleeve 7, the grinding wheel 5 is mounted at the part of the mounting shaft, which is far away from the rotating shaft 4 and extends out of the second sleeve 7,
the support 2 is fixed on a frame of the grinding machine, one end of the transmission shaft 1, which is far away from the grinding wheel 5, is fixed with a transmission wheel 11, the transmission wheel 11 is a belt wheel, the transmission wheel 11 is connected with the transmission wheel 11 on the grinding machine through a transmission belt, and a motor on the frame of the grinding machine drives the transmission shaft 1 to rotate through a belt transmission mechanism, so as to drive the grinding wheel 5 to rotate.
In the working process of the embodiment: the motor drives transmission shaft 1 through taking drive mechanism to rotate, transmission shaft 1 drives pivot 4 and rotates and then drive grinding wheel 5 and rotate, 5 pivoted in-process grinding wheels, 3 drive the grinding wheel 5 and do regular back and forth movement along 4 axis directions of pivot, pivot 4 passes through the spline part with transmission shaft 1 and is connected, and then make it transmit reliable rotary power at the back and forth movement in-process, the line between two adjacent bar grinding route is then eliminated in the back and forth movement of grinding wheel 5, increase grinding effect.
In this embodiment, it is preferred that the part that pivot 4 and transmission shaft 1 complex is the external spline shaft, and transmission shaft 1 and the part that pivot 4 complex are opened there is internal spline hole 10, and internal spline hole 10 matches with the external spline shaft, and external spline shaft integrated into one piece makes, and then makes relative 4 radial bellied parts of pivot and pivot 4 integrated into one piece make, and the rigidity of increase pivot 4 guarantees to transmit reliable rotary power, guarantees transmission precision and increases its life.
In order to ensure the transmission precision and the transmission stability, it is preferable in this embodiment that two sets of bearings are provided between the second sleeve 7 and the rotating shaft 4, and the two sets of bearings are respectively located at two ends of the second sleeve 7.
In this embodiment, it is preferable that the outer diameter and the inner diameter of the two sets of bearings are different, so that the rotating shaft 4 can ensure the transmission precision and increase the stability of the grinding wheel 5 during the reciprocating motion.
In the embodiment, it is preferable that the rotating shaft 4 has a first shoulder 40 and a second shoulder 41, and the first shoulder 40 and the second shoulder 41 respectively position the two sets of bearings, thereby facilitating the installation and positioning of the bearings with different inner diameters
In order to further ensure the stability during the grinding process, it is preferable in this embodiment that one set of bearings between the second sleeve 7 and the rotating shaft 4 is a deep groove ball bearing, and the other set of bearings is two angular contact bearings arranged oppositely.
In order to facilitate the connection between the telescopic part 3 and the second sleeve 7, and further facilitate the telescopic part 3 to drive the sleeve and the rotating shaft 4 to reciprocate, in this embodiment, it is preferable that one end of the second sleeve 7, which is far away from the grinding wheel 5, is provided with an extension plate 9, and the extension plate 9 is connected with the telescopic part 3.
In this embodiment, preferably, a driving wheel 11 is fixed at an end of the transmission shaft 1 away from the grinding wheel 5, and the driving wheel 11 is a belt wheel, so as to facilitate driving the transmission shaft 1 to rotate.
In this embodiment, it is preferable that the reciprocating displacement of the grinding wheel 5 is less than half of the width of the grinding wheel 5, so that the telescopic speed of the telescopic member 3 is reduced on the premise of avoiding the generation of grinding lines, the energy consumption is further reduced, and the service life of the telescopic member 3 is prolonged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a dull and stereotyped burnishing machine swing bistrique, its characterized in that includes transmission shaft (1), support (2), extensible member (3), pivot (4), grinding wheel (5), first sleeve (6), extensible member (3), second sleeve (7) and mount pad (8), wherein:
the first sleeve (6) is fixed on the bracket (2), the transmission shaft (1) is rotatably arranged in the first sleeve (6),
the mounting sleeve seat (8) is fixed on the support (2), the second sleeve (7) is horizontally and slidably mounted in the mounting sleeve seat (8), the rotating shaft (4) is rotatably mounted in the second sleeve (7), and the rotating shaft (4) is overlapped with the rotating axis of the transmission shaft (1);
one end of the rotating shaft (4), which is opposite to the transmission shaft (1), is slidably mounted on the transmission shaft (1) along the axis of the rotating shaft (4), and the part of the rotating shaft (4), which is matched with the transmission shaft (1), is provided with a protruding part which extends along the rotating shaft (4) or the transmission radial direction, so that the rotating shaft (4) drives the transmission shaft (1) to rotate when rotating;
the telescopic piece (3) is arranged on the mounting sleeve seat (8) and is used for driving the second sleeve (7) and the rotating shaft (4) to do reciprocating motion along the axial direction of the rotating shaft (4);
one end of the mounting shaft, which is far away from the transmission shaft (1), extends out of a second sleeve (7), and the grinding wheel (5) is mounted on the part, which is far away from the rotating shaft (4) and extends out of the second sleeve (7), of the mounting shaft.
2. The oscillating grinding head of the flat plate polishing machine according to claim 1, wherein the part of the rotating shaft (4) matched with the transmission shaft (1) is an external spline shaft, the part of the transmission shaft (1) matched with the rotating shaft (4) is provided with an internal spline hole (10), and the internal spline hole (10) is matched with the external spline shaft.
3. The oscillating grinding head of a flat bed polishing machine according to claim 1, characterized in that two sets of bearings are provided between the second sleeve (7) and the rotating shaft (4), the two sets of bearings being located at the two ends of the second sleeve (7), respectively.
4. The flat bed polisher oscillating grinding head of claim 3 wherein both sets of bearings are of unequal outer and inner diameters.
5. The oscillating grinding head of a flat bed polishing machine according to claim 4, characterized in that the rotating shaft (4) has a first shoulder (40) and a second shoulder (41), the first shoulder (40) and the second shoulder (41) being positioned respectively for the two sets of bearings.
6. The oscillating grinding head of a flat bed polishing machine according to claim 3, characterized in that one set of bearings between the second sleeve (7) and the rotating shaft (4) is a deep groove ball bearing and the other set of bearings is two angular contact bearings arranged oppositely.
7. The oscillating grinding head of a flat bed polishing machine according to claim 1, characterised in that the end of the second sleeve (7) remote from the grinding wheel (5) is provided with an extension plate (9), the extension plate (9) being connected to the telescopic member (3).
8. The oscillating grinding head of a flat bed polishing machine according to claim 1, characterised in that the end of the transmission shaft (1) remote from the grinding wheel (5) is fixed with a transmission wheel (11).
9. The oscillating grinding head of a flat bed polishing machine according to claim 1, characterized in that the displacement of the reciprocating motion of the grinding wheel (5) is less than half the width of the grinding wheel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110574166.4A CN113211307A (en) | 2021-05-25 | 2021-05-25 | Swing grinding head of flat polishing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110574166.4A CN113211307A (en) | 2021-05-25 | 2021-05-25 | Swing grinding head of flat polishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113211307A true CN113211307A (en) | 2021-08-06 |
Family
ID=77098402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110574166.4A Pending CN113211307A (en) | 2021-05-25 | 2021-05-25 | Swing grinding head of flat polishing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113211307A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282479Y (en) * | 1997-01-15 | 1998-05-27 | 佛山市石湾区江湾五金电器公司明华模具厂 | Pneumatic compensated polishing grinding head |
| JP2003145395A (en) * | 2001-11-07 | 2003-05-20 | Takemasa:Kk | Spindle structure for ultrasonic working machine and supporting horn to be used for the same |
| CN202169523U (en) * | 2011-07-15 | 2012-03-21 | 洛阳新双合玻璃机械技术有限公司 | Automatic compensation-type grinding head mechanism of glass edge grinding machine |
| EP3085491A1 (en) * | 2015-04-24 | 2016-10-26 | Arku Maschinenbau Gmbh | Device for grinding and deburring of a planar workpiece |
| CN208246559U (en) * | 2018-03-30 | 2018-12-18 | 保特罗玻璃工业（佛山）有限公司 | A kind of grinding wheel head structure of glass edge-grinding machine |
| CN209887367U (en) * | 2019-01-23 | 2020-01-03 | 佛山市科润成机械设备有限公司 | Pneumatic constant-pressure grinding head seat device |
-
2021
- 2021-05-25 CN CN202110574166.4A patent/CN113211307A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282479Y (en) * | 1997-01-15 | 1998-05-27 | 佛山市石湾区江湾五金电器公司明华模具厂 | Pneumatic compensated polishing grinding head |
| JP2003145395A (en) * | 2001-11-07 | 2003-05-20 | Takemasa:Kk | Spindle structure for ultrasonic working machine and supporting horn to be used for the same |
| CN202169523U (en) * | 2011-07-15 | 2012-03-21 | 洛阳新双合玻璃机械技术有限公司 | Automatic compensation-type grinding head mechanism of glass edge grinding machine |
| EP3085491A1 (en) * | 2015-04-24 | 2016-10-26 | Arku Maschinenbau Gmbh | Device for grinding and deburring of a planar workpiece |
| CN208246559U (en) * | 2018-03-30 | 2018-12-18 | 保特罗玻璃工业（佛山）有限公司 | A kind of grinding wheel head structure of glass edge-grinding machine |
| CN209887367U (en) * | 2019-01-23 | 2020-01-03 | 佛山市科润成机械设备有限公司 | Pneumatic constant-pressure grinding head seat device |
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