CN107309767B - Polishing device - Google Patents

Polishing device Download PDF

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Publication number
CN107309767B
CN107309767B CN201710749714.6A CN201710749714A CN107309767B CN 107309767 B CN107309767 B CN 107309767B CN 201710749714 A CN201710749714 A CN 201710749714A CN 107309767 B CN107309767 B CN 107309767B
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CN
China
Prior art keywords
end cover
polishing
rocker arm
support
guide rod
Prior art date
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Active
Application number
CN201710749714.6A
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Chinese (zh)
Other versions
CN107309767A (en
Inventor
胥良
陈果
曾辉
贾登
余建波
刘小菲
罗友
张近
曾宪君
舒娅
董波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing General Aviation Industry Group Co ltd
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Chongqing General Aviation Industry Group Co ltd
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Publication date
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Priority to CN201710749714.6A priority Critical patent/CN107309767B/en
Publication of CN107309767A publication Critical patent/CN107309767A/en
Application granted granted Critical
Publication of CN107309767B publication Critical patent/CN107309767B/en
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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
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • B24B27/04—Grinding machines or devices in which the grinding tool is supported on a swinging arm
    • 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
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
    • 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
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • B24B5/35—Accessories
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention discloses a polishing device capable of improving polishing efficiency and polishing quality. The polishing device comprises an upper support, a lower support, an upper end cover, a lower end cover and a stand column which fixedly connects the upper end cover and the lower end cover together, wherein the upper end cover is supported on the upper support through an upper extending part and a bearing, the lower end cover is supported on the lower support through a lower extending part and a bearing, the upper end cover and the upper extending part are provided with inlet holes for workpieces to be polished, the outer edge of the lower end cover is provided with a surrounding wall which extends downwards, a mounting cavity is formed between the surrounding wall and the lower extending part, a guide rod is arranged in the mounting cavity, a sliding fit slider is arranged on the guide rod, a compression spring is arranged between the slider and the surrounding wall, a connecting rod is hinged on the slider, a rocker arm support is fixed on the lower end cover, the middle part of a rocker arm is hinged on the rocker arm support, a polishing component is arranged on the upper part of the rocker arm, the lower end of the rocker arm is inserted into an axial Kong Huana arranged on the connecting rod through a yielding hole on the upper end cover, and the slider slides radially along the lower end cover under the action of the centrifugal force and the compression spring, and drives the polishing component to move.

Description

Polishing device
Technical Field
The invention is used for surface treatment of a cylindrical bar blank before the cylindrical bar blank enters a die forging process, and particularly relates to a polishing device.
Background
At present, a bar blank is generally required to be heated before entering a die forging device, therefore, oxide skin is very easy to generate on the surface of the blank bar before entering a forging die, if the bar with the oxide skin is directly placed in the forging die, the oxide skin falling off from the bar after forging can be adhered to the die, the die is damaged, and the die forging precision is affected. At present, the oxide skin on the surface of the bar is manually polished by manpower, so that on one hand, the working efficiency is low, and on the other hand, the polishing quality of the bar is uneven due to different polishing technologies and different forces of different operators, and the quality of a final product is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a polishing device for improving polishing efficiency and polishing quality.
The purpose of the invention is realized in the following way:
a polishing device comprises an upper support, a lower support and a polishing mechanism arranged between the upper support and the lower support,
the polishing mechanism comprises an upper end cover, a lower end cover and a stand column which fixedly connects the upper end cover and the lower end cover together, a frame of the polishing mechanism is formed, the upper end cover is axially provided with an upper extension part, the upper extension part is supported in an upper positioning hole formed on an upper support through a bearing, the lower end cover is axially provided with a lower extension part, the lower extension part is supported in a lower positioning hole formed on a lower support through a bearing, the upper end cover and the upper extension part are axially provided with an inlet hole for a workpiece to be polished, the outer edge of the lower end cover is provided with a downwardly extending enclosing wall, an installation cavity is formed between the enclosing wall and the lower extension part, a guide rod is radially arranged in the installation cavity, a sliding block is slidably matched on the guide rod, a compression spring is sleeved on a guide rod part between the sliding block and the enclosing wall, a connecting rod is hinged on the sliding block, a rocker support is fixedly arranged on the frame, the upper part of the rocker arm is hinged with a polishing assembly, the lower end of the rocker arm passes through a yielding hole in the upper end cover and is inserted into an axial Kong Huana formed on the connecting rod,
when the polishing mechanism rotates, the sliding block radially slides along the lower end cover under the action of centrifugal force and the elasticity of the compression spring, and drives the polishing assembly on the upper part of the rocker arm to radially move along the lower end cover through the connecting rod.
Preferably, the number of the guide rods is three, the three guide rods are uniformly arranged in the mounting cavity of the lower end cover along the circumferential direction of the lower end cover, and each guide rod is respectively connected with a corresponding sliding block, a corresponding connecting rod, a corresponding rocker arm and a corresponding polishing assembly.
Preferably, the grinding assembly is fixedly mounted on the upper portion of the swing arm.
Preferably, the upper section of the rocker arm is parallel to the axis of the lower end cap, and the lower section of the rocker arm is inclined radially outwardly along the lower end cap.
Preferably, the lower end cover is axially provided with another access hole for a workpiece to be polished, and the access hole on the upper end cover are positioned on the same axis.
Preferably, the rocker arm support is fixed on the upper end face of the lower end cover, and the position of the rocker arm support can be adjusted along the radial direction of the lower end cover.
Preferably, the number of the stand columns is three, the three stand columns are uniformly arranged along the circumferential direction of the lower end cover, and the three stand columns are all positioned at the outer side of the inlet hole.
Preferably, one end of the guide rod is provided with threads, and one end of the guide rod provided with the threads is fixed in the threaded hole formed in the lower extension part through threads.
Preferably, the lower end of the lower extension portion extends through the lower support and fixes a pulley for connecting the motor.
Preferably, the polishing device is used for polishing the oxide skin of the bar blank before entering the die forging process.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1) The pressure applied by the polishing assembly to the workpiece can be accurately controlled, so that the workpiece is uniformly polished by the polishing assembly pressure during polishing, and the workpiece is fed radially at the same time, so that unbalanced load does not exist, and the polishing quality of the workpiece is uniformly ensured;
2) The mechanical polishing is used for replacing manual polishing, bar blanks with different diameters can be polished, and the polishing efficiency is improved;
3) The whole polishing process only needs to control the rotating speed of the motor, so that the automatic control can be realized more conveniently, and the polishing machine can be integrated into an automatic production line more conveniently;
4) Based on the three points, the cost is reduced, the quality is greatly improved, and the product competitiveness is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the bottom connection of the lower end cap;
fig. 4 is a schematic top view of the connection of the lower end cap.
Reference numerals
In the drawings, 1-a workpiece; 2-upper bearings; 3-upper support; 4-a first nut; 5-spring washer one; 6-an upper end cover; 7-stand columns; 8-a second nut; 9-a second spring washer; 10-a grinding assembly; 11-rocker arms; 12-a lower end cap; 13-connecting rods; 14-a slider; 15-a guide rod; 16-compressing the spring; 17-lower bearings; 18-a lower bracket; 19-a flat key; 20-pulleys; 21-a lock nut; 22-a third nut; 23-bolts; 24-rocker arm support; 25-rocker pin.
Detailed Description
Referring to fig. 1 to 4, an embodiment of a polishing apparatus is shown, in which the polishing apparatus is used to polish the scale of a bar stock prior to entering a swaging process.
The polishing device comprises an upper support, a lower support and a polishing mechanism arranged between the upper support and the lower support, and in actual use, the upper support and the lower support can be fixed on any machine body. The polishing mechanism comprises an upper end cover, a lower end cover and stand columns which are fixedly connected with the upper end cover and the lower end cover together, a polishing mechanism frame is formed, the number of the stand columns is three, the three stand columns are uniformly arranged along the circumference of the lower end cover, the upper end cover is axially provided with an upper extension part, the upper extension part is supported in an upper positioning hole formed in an upper support through an upper bearing, the lower end cover is axially provided with a lower extension part, the lower extension part is supported in a lower positioning hole formed in a lower support through a lower bearing, and the lower end of the lower extension part extends through the lower support and is fixedly used for connecting a belt wheel of a motor. The belt wheel is circumferentially positioned through the flat key and axially positioned through the lock nut. The upper end cover and the upper extension part are axially provided with an access hole for a workpiece to be polished. The lower end cover is axially provided with another access hole for a workpiece to be polished, the access hole is positioned on the same axis with the access hole on the upper end cover, the workpiece enters from the access hole on the upper end cover, the workpiece can be polished longer, and three stand columns are positioned on the outer side of the access hole.
The outer fringe of lower end cover is equipped with downwardly extending's enclosing wall, form the installation cavity between enclosing wall, the lower extension, radially be equipped with the guide arm in the installation cavity, in this embodiment, the quantity of guide arm is three, and three guide arm evenly sets up in the installation cavity of lower end cover along lower end cover circumference, the one end of guide arm is equipped with the screw thread, the one end screw thread that the guide arm was equipped with the screw thread is fixed in the screw hole that is equipped with on the lower extension. The guide rods are slidably matched with a sliding block, a compression spring is sleeved on the guide rod part between the sliding block and the surrounding wall, a connecting rod is hinged to each sliding block, the lower end of each connecting rod is of an inverted U shape, and two walls of the inverted U shape are located on two sides of the sliding block and are hinged to the sliding block through pin shafts. Three rocker supports are fixed on the upper end face of the lower end cover and can be adjusted in position along the radial direction of the lower end cover. In the embodiment, the rocker arm support is fixed on the lower end cover through the bolt and nut mechanism, and a kidney-shaped groove is formed in the lower end cover along the radial direction for the bolt and nut mechanism and the rocker arm support to adjust positions along the radial direction.
The rocker arm support is hinged to the middle of the rocker arm through a rocker arm pin shaft, and a polishing assembly is arranged on the upper portion of the rocker arm. The lower end of the rocker arm passes through the waist-shaped abdication hole on the upper end cover and is inserted into the axial hole slide arranged at the upper end of the connecting rod.
In this embodiment, the upper section of the rocker arm is parallel to the axis of the lower end cap, and the lower section of the rocker arm is inclined radially outwardly along the lower end cap. On the one hand, when polishing, the polishing assembly (comprising the rocker arm) is subjected to spring force, self centrifugal force, sliding block centrifugal force, pressure when a workpiece contacts the polishing assembly and the like, and the rotating speed of the motor and the position of the rocker arm support can be adjusted, so that the axis of the polishing assembly is just balanced at the moment parallel to the axis of the workpiece, namely the moment shown in figure 1;
on the other hand, even if the axis of the polishing assembly is inclined with the axis of the workpiece, a certain point in the axial direction of the polishing assembly is in contact with the workpiece, but the workpiece moves from top to bottom (the speed is far less than the revolution speed of the polishing assembly), the polishing assembly can always polish the whole outer cylindrical surface of the workpiece, and the workpiece is similar to turning, but the workpiece does not rotate, and the cutter rotates; in addition, the oxide layers are relatively brittle, and can fall off one by one only by extrusion, and the polishing process is mainly used for removing the oxide layers on the surfaces of the bar blanks to form a rough machining process. For this reason, the grinding quality is not affected even if the grinding assembly axis is tilted with respect to the workpiece axis.
The working principle is as follows:
at the initial moment, the motor drives the belt pulley 20 to rotate at a low speed, the centrifugal force generated by the sliding block 14 is smaller than the elastic force of the compression spring 16, the sliding block 14 moves towards the direction away from the axis under the action of the compression spring force, the rocker arm 11 is driven to swing, the lower end of the rocker arm 11 is close to the axis, the upper end of the rocker arm is far away from the axis, the polishing assembly 10 at the upper end of the rocker arm is further far away from the axis, the inscribed circle formed by the three polishing assemblies is enlarged, the workpiece 1 to be polished is placed from top to bottom at the moment, after the workpiece 1 is placed to a position needing to be polished, the rotating speed of the motor is increased, the rotating speed of the polishing device is also increased, along with the increase of the rotating speed, the centrifugal force of the sliding block 14 is also gradually increased, after the centrifugal force is larger than the elastic force of the compression spring 16, the sliding block 14 moves towards the direction away from the axis, the lower end of the rocker arm 11 is driven to move away from the axis, the upper end of the rocker arm 11 and the polishing assembly 10 together move towards the direction away from the axis until the workpiece 1 is pressed, the polishing assembly 10 revolves around the axis, and the friction force between the workpiece 1 and the polishing assembly 10 is driven to rotate along the axis. Because three sets of identical polishing assemblies 10 are uniformly arranged along the axis, the polishing assemblies 10 uniformly apply pressure to the workpiece 1 and have an automatic aligning effect on the workpiece, so that the polishing quality is effectively ensured. On the one hand, the workpiece 1 can be moved up and down at a uniform speed during polishing, so that the axial feeding of the workpiece 1 is completed; on the other hand, the rotating speed of the motor can be adjusted, so that the radial feeding of the grinding cutter to the workpiece 1 is completed. After polishing is finished, the rotating speed of the motor is reduced, the rotating speed of the sliding block 14 is reduced, the centrifugal force is reduced, after the centrifugal force is smaller than the elastic force of the compression spring 16, the sliding block 14 drives the lower end of the rocker arm 11 to move in the direction close to the axis, the upper end of the rocker arm 11 moves in the direction away from the axis with the polishing assembly 10, the diameter of an inscribed circle formed by the three polishing assemblies 10 is increased, and then a workpiece can be taken out to finish polishing of one workpiece.
In addition, the distance from the rocker arm support 24 to the axis can be adjusted according to the diameter of the workpiece to be polished, and the size of an inscribed circle formed by the three polishing assemblies is adjusted to be matched with the diameter of the workpiece to be polished, so that the polishing requirements of workpieces with different diameters can be met.
The invention is not limited to the above-described embodiments only, but the sanding assembly is mounted on the upper part of the swing arm by means of bearings. The two ends of the polishing assembly apply precompression by the compression springs, and a certain friction force is generated on the polishing assembly, so that the polishing assembly can rotate only when the friction force generated by the workpiece on the polishing assembly is larger than the friction force generated by the precompression of the compression springs on the two ends on the polishing assembly, namely the polishing assembly can rotate and revolve.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (6)

1. A polishing device is characterized by comprising an upper support, a lower support and a polishing mechanism arranged between the upper support and the lower support,
the polishing mechanism comprises an upper end cover, a lower end cover and a stand column which fixedly connects the upper end cover and the lower end cover together, a frame of the polishing mechanism is formed, the upper end cover is axially provided with an upper extension part, the upper extension part is supported in an upper positioning hole formed on an upper support through a bearing, the lower end cover is axially provided with a lower extension part, the lower extension part is supported in a lower positioning hole formed on a lower support through a bearing, the upper end cover and the upper extension part are axially provided with an inlet hole for a workpiece to be polished, the outer edge of the lower end cover is provided with a downwardly extending enclosing wall, an installation cavity is formed between the enclosing wall and the lower extension part, a guide rod is radially arranged in the installation cavity, a sliding block is slidably matched on the guide rod, a compression spring is sleeved on a guide rod part between the sliding block and the enclosing wall, a connecting rod is hinged on the sliding block, a rocker support is fixedly arranged on the frame, the upper part of the rocker arm is hinged with a polishing assembly, the lower end of the rocker arm passes through a yielding hole in the upper end cover and is inserted into an axial Kong Huana formed on the connecting rod,
when the polishing mechanism rotates, the sliding block radially slides along the lower end cover under the action of centrifugal force and the elasticity of the compression spring, and drives the polishing assembly at the upper part of the rocker arm to radially move along the lower end cover through the connecting rod;
the rocker arm support is fixed on the upper end face of the lower end cover and can adjust the position along the radial direction of the lower end cover;
the polishing device is used for polishing the oxide skin of the bar blank before entering the die forging process;
the number of the guide rods is three, the three guide rods are uniformly arranged in the mounting cavity of the lower end cover along the circumferential direction of the lower end cover, and each guide rod is respectively connected with a corresponding sliding block, a corresponding connecting rod, a corresponding rocker arm and a corresponding polishing assembly;
the lower end cover is axially provided with another access hole for a workpiece to be polished, and the access hole on the upper end cover are positioned on the same axis.
2. A sanding device according to claim 1 wherein the sanding assembly is fixedly mounted on an upper portion of the swing arm.
3. A sanding device according to claim 1 or 2, wherein the upper section of the rocker arm is parallel to the axis of the lower end cap, and the lower section of the rocker arm is inclined radially outwardly along the lower end cap.
4. The polishing device according to claim 1, wherein the number of the upright posts is three, the three upright posts are uniformly arranged along the circumferential direction of the lower end cover, and the three upright posts are all positioned outside the inlet hole.
5. A grinding apparatus as defined in claim 1, wherein the guide rod is threaded at one end thereof and the threaded end of the guide rod is threadedly secured within a threaded bore provided in the lower extension.
6. A sanding device according to claim 1 wherein the lower end of the lower extension extends past the lower support and secures a pulley for connection to the motor.
CN201710749714.6A 2017-08-28 2017-08-28 Polishing device Active CN107309767B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710749714.6A CN107309767B (en) 2017-08-28 2017-08-28 Polishing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710749714.6A CN107309767B (en) 2017-08-28 2017-08-28 Polishing device

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CN107309767A CN107309767A (en) 2017-11-03
CN107309767B true CN107309767B (en) 2023-06-20

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Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN108247488B (en) * 2018-02-09 2023-09-22 住重福惠动力机械有限公司 Centrifugal pipe end polishing device
CN112792629A (en) * 2021-01-12 2021-05-14 西安万翔航空科技有限公司 Quill shaft grinding device, be used for automatic grinding equipment of cable
CN113681455B (en) * 2021-09-16 2023-07-04 河南航天液压气动技术有限公司 Grinding and polishing tool
CN114770255A (en) * 2022-05-25 2022-07-22 宿州郑升轴承有限公司 Bearing surface treatment equipment and method thereof

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CN201366653Y (en) * 2009-03-25 2009-12-23 佛山市科达石材机械有限公司 Swing type polishing grinding head
CN203804698U (en) * 2014-04-22 2014-09-03 成都海凌达机械有限公司 Tire polishing device of small loader

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DE3103484A1 (en) * 1981-02-03 1982-08-26 Mutz & Fornach GmbH & Co KG, 5840 Schwerte Apparatus for grinding the surfaces, in particular of cylindrical objects
DE3244965A1 (en) * 1982-12-04 1984-06-07 Mutz & Fornach GmbH & Co KG, 5840 Schwerte Device for grinding the surfaces of, in particular cylindrical, objects
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318865A1 (en) * 1983-05-25 1984-11-29 Mutz & Fornach GmbH & Co KG, 5840 Schwerte Device for grinding in particular cylindrical objects by means of rotating grinding wheels
CN201366653Y (en) * 2009-03-25 2009-12-23 佛山市科达石材机械有限公司 Swing type polishing grinding head
CN203804698U (en) * 2014-04-22 2014-09-03 成都海凌达机械有限公司 Tire polishing device of small loader

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