CN109623659B - Friction driving dressing device and friction driving dressing method for superhard grinding wheel - Google Patents
Friction driving dressing device and friction driving dressing method for superhard grinding wheel Download PDFInfo
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- CN109623659B CN109623659B CN201811482061.0A CN201811482061A CN109623659B CN 109623659 B CN109623659 B CN 109623659B CN 201811482061 A CN201811482061 A CN 201811482061A CN 109623659 B CN109623659 B CN 109623659B
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- grinding wheel
- dressing
- superhard grinding
- superhard
- abrasive belt
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Classifications
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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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/04—Devices or means for dressing or conditioning abrasive surfaces of cylindrical or conical surfaces on abrasive tools or wheels
-
- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/006—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the speed
Abstract
The invention relates to a friction driving dressing device and a friction driving dressing method for a superhard grinding wheel. The dressing device comprises two revolving bodies, wherein at least one of the two revolving bodies is a driving revolving body, an annular abrasive belt is wound on the two revolving bodies and comprises a soft elastic belt body and abrasive materials, the dressing device further comprises a mounting shaft of the superhard grinding wheel, the mounting shaft is a shaft with a damping effect, a rotating speed measuring device is mounted on the mounting shaft, and the dressing device further comprises a pressing device used for mutually pressing the annular abrasive belt and the dressed superhard grinding wheel. The dressing device can be used for solving the problem of low dressing efficiency caused by poor continuity of the abrasive belt in the existing soft elastic dressing method, can also be used for solving the problem of influence on dressing effect caused by gradual increase of the traveling speed of the abrasive belt along with the running of the dressing device, and can also solve the problem of poor elastic effect caused by less contact parts of the abrasive belt and the superhard grinding wheel; the trimming method can simplify the whole trimming process and judge the trimming result accurately.
Description
Technical Field
The invention relates to a friction driving dressing device and a friction driving dressing method for a superhard grinding wheel.
Background
The superhard grinding wheel is a grinding wheel which is formed by adding superhard grinding materials into a grinding layer of the grinding wheel through a bonding agent, wherein the superhard grinding materials comprise artificial diamond and cubic boron nitride; the super-hard grinding wheel has excellent grinding performance and is one of the main research directions in the grinding industry at present.
The size of the surface of a manufactured super-hard grinding wheel is not the size required by use (for example, a cylindrical super-hard grinding wheel requiring perfect circle may not be perfect circle when being produced, and has a convex structure or an elliptic shape and the like), and the super-hard grinding materials are generally wrapped in a binding agent, so the super-hard grinding wheel generally needs to be dressed before use, the dressing of the super-hard grinding wheel comprises two processes of dressing and sharpening, the dressing is to perform micro-cutting or grinding on the super-hard grinding wheel, so that the super-hard grinding wheel achieves the required geometric shape and size precision, and the tip of the grinding materials is crushed slightly to form a sharp grinding edge; the sharpening process is to remove the bonding agent between the abrasives, so that a certain chip containing space is formed between the abrasives, and the sharpening edge protrudes out of the bonding agent to form a cutting edge. The dressing method of the superhard grinding wheel not only influences the size precision and the sharpness of a grinding edge of the superhard grinding wheel, but also influences the wear resistance, the grinding force, the grinding temperature, the surface roughness of a ground workpiece and the like of the superhard grinding wheel.
At present, a diamond pen is mostly adopted for dressing when the superhard grinding wheel is dressed, but when the diamond pen is transversely fed for dressing the superhard grinding wheel, a bus of the superhard grinding wheel is changed into a slant line or a convex line due to abrasion, and meanwhile, the diamond pen is abraded quickly when the superhard grinding wheel is dressed, and the shape and size precision of the dressed superhard grinding wheel are poor; the common method for trimming the superhard grinding wheel also comprises the diamond roller trimming, but the diamond roller has large pressure on the trimmed superhard grinding wheel, if the rigidity of a machine tool is insufficient, the superhard grinding wheel is easily trimmed into an oval shape, the surface quality is poor, and the diamond roller can only be used for shaping and is not suitable for sharpening when the superhard grinding wheel is trimmed. Both methods belong to rigid dressing methods of superhard grinding wheels, and based on the defects of the rigid dressing methods, elastic dressing methods of superhard grinding wheels are researched.
A chinese patent publication No. CN1060110C, published on 1/3/2001, discloses a soft elastic dressing method for a diamond grinding wheel, as shown in fig. 1, the supporting device of the soft elastic dressing method for a diamond grinding wheel comprises a winding wheel 101, a unwinding wheel 102 and a contact wheel 103, the winding wheel 101 is connected with a reducer (not shown in the figure), the reducer provides power for the winding wheel 101, and an abrasive belt 104 is wound on the unwinding wheel 102 and then wound on the winding wheel 101 through the contact wheel 103; the diamond grinding wheel 105 is positioned above the contact wheel 103, the abrasive belt 104 passes through the space between the diamond grinding wheel 105 and the contact wheel 103, the contact wheel 103 pushes the abrasive belt 104 upwards and presses the abrasive belt 104 on the diamond grinding wheel 105, and the diamond grinding wheel 105 is connected with a spindle (not shown in the figure) of the grinding machine; when the device is used, the speed reducer drives the belt winding wheel 101 to rotate at a lower speed, the grinding machine drives the diamond grinding wheel 105 to rotate at a higher speed, the abrasive belt 104 is pressed on the diamond grinding wheel 105 by the contact wheel 103, so that the diamond grinding wheel 105 and the abrasive belt 104 slide relatively to generate sliding friction force, and the abrasive belt 104 can trim the diamond grinding wheel 105 through the sliding friction force.
Although the soft elastic dressing method of the diamond grinding wheel avoids the damage of rigid dressing to the superhard grinding wheel, the method has the following problems: 1) the elastic finishing method is characterized in that the abrasive belt is pressed to be in contact with a finished grinding wheel through the contact wheel, the abrasive belt does not have the advantage of elasticity on the contact wheel and cannot penetrate into the bonding agent layer, the finishing process still means that the abrasive materials on the abrasive belt and the abrasive materials of the finished grinding wheel collide with each other to achieve the finishing effect, and the finishing effect is not obviously different from the traditional rigid finishing; 2) in the elastic finishing method, the grinding wheel rotates at a high speed during finishing, the belt winding wheel rotates slowly to drive the abrasive belt to move slowly, the abrasive belt with the lower speed is in a state of being ground by the grinding wheel under the same condition according to the common knowledge of the industry, the finishing effect cannot be achieved, the abrasive material of the superhard grinding wheel is the hardest two materials, the common abrasive belt cannot be used for finishing, and the finishing effect cannot be achieved even if the superhard abrasive belt is used; 3) as said in the text, "there is no comet tail of binder behind the abrasive material of diamond grinding wheel surface after sharpening, the abrasive material is protruding and highly moderate", this belongs to the synonymous substitution of traditional rigid finishing, the shaping effect of rigid finishing is large, do not play the role of sharpening almost; 4) the abrasive belt has poor continuity, and when the abrasive belt on the belt releasing wheel is released, the belt releasing wheel needs to be replaced, so that the dressing efficiency is reduced; 5) the total thickness of the abrasive belts wound on the shaft of the speed reducer is increased along with the increase of the number of turns of the abrasive belts wound on the belt winding wheel, and the walking speed of the abrasive belts is gradually increased due to the fixed rotating speed of the speed reducer, so that the dressing of the diamond grinding wheel is influenced; 6) the contact wheel presses the abrasive belt to be in contact with the finished grinding wheel, the contact part of the abrasive belt and the grinding wheel is only a small part, and the elastic effect is poor; 7) when the grinding wheel is dressed by the device, an operator generally uses a magnifier to observe the surface condition of the grinding wheel to judge whether the grinding wheel is dressed or not, the operation is troublesome, and the artificial perception error is large.
Disclosure of Invention
The invention aims to provide a friction driving dressing device for a superhard grinding wheel, which is used for solving the problem of low dressing efficiency caused by poor continuity of an abrasive belt in the existing soft elastic dressing method, solving the problem of influence on dressing effect caused by gradual increase of the traveling speed of the abrasive belt along with the operation of the dressing device and solving the problem of poor elastic effect caused by less contact parts of the abrasive belt and the superhard grinding wheel; the invention provides a friction driving dressing method of a superhard grinding wheel, which is used for solving the problems that the whole dressing process is troublesome and the artificial observation error is large because the existing dressing method of the superhard grinding wheel needs to repeatedly observe whether the dressing is finished or not in the dressing process.
In order to achieve the purpose, the friction drive dressing method of the superhard grinding wheel has the technical scheme that: the abrasive belt is tightly attached to the ground superhard grinding wheel arranged on the damping shaft and moves relative to the ground superhard grinding wheel, and grinding is carried out simultaneously; when the ground superhard grinding wheel rotates, whether the change amplitude of the speed of the ground superhard grinding wheel is within a certain range is detected, so that whether finishing is finished is judged.
The friction driving dressing method of the superhard grinding wheel has the beneficial effects that: by using the dressing method, the trouble caused by repeatedly observing whether the ground superhard grinding wheel is dressed can be avoided, whether the ground superhard grinding wheel is dressed can be judged only by detecting the change amplitude of the speed of the ground superhard grinding wheel, the dressing method is simple and convenient, and the probability of errors caused by artificial observation is reduced.
Further, a rotating speed measuring device is arranged on the damping shaft to detect the speed change amplitude of the ground superhard grinding wheel.
The beneficial effects of the improvement are as follows: a common method of detecting the magnitude of the change in speed of the superabrasive wheel being ground is provided.
Further, whether the speed variation amplitude of the grinded superhard grinding wheel is smaller than 10% or not is detected, and when the speed variation amplitude is smaller than 10%, finishing is judged to be finished.
The beneficial effects of the improvement are as follows: and providing a speed change amplitude set value which is suitable for judging finishing of most superhard grinding wheels.
The friction drive finishing device for the superhard grinding wheel has the technical scheme that: the dressing device comprises two revolving bodies, at least one of the two revolving bodies is a driving revolving body, annular abrasive belts used for dressing the superhard abrasive wheels are wound on the two revolving bodies, each annular abrasive belt comprises a soft elastic belt body and abrasive materials arranged on the soft elastic belt body, the dressing device further comprises a mounting shaft used for mounting the dressed superhard abrasive wheels, the mounting shaft is a shaft with a damping effect and slides in a manner of relative friction with the superhard abrasive wheels when the annular abrasive belts are driven to move by the driving revolving body, a rotating speed measuring device is mounted on the mounting shaft, and the dressing device further comprises a compressing device used for compressing the annular abrasive belts and the dressed superhard abrasive wheels mutually.
The friction driving trimming device for the superhard grinding wheel has the beneficial effects that: the superhard grinding wheel is dressed by the dressing device, and the abrasive belt of the dressing device is an annular abrasive belt, so that the two revolving bodies drive the annular abrasive belt to continuously work in the using process, the continuity is good, and the dressing efficiency cannot be influenced by the need of replacing the abrasive belt; the number of turns of the abrasive belt on the driving revolving body is not changed, so that the traveling speed of the annular abrasive belt is not changed under the condition that the rotating speed of the driving revolving body is constant, the dressing of the superhard grinding wheel is not changed, and the dressing effect is not influenced; moreover, when the annular abrasive belt slides relative to the superhard abrasive wheel, the abrasive materials on the annular abrasive belt can be extruded to the superhard abrasive wheel under the action of the soft elastic belt body, so that the bonding agents among the superhard abrasive materials on the superhard abrasive wheel can be more deeply removed, more superhard abrasive materials can be leaked out, and the sharpness of the superhard abrasive wheel is improved; the installation epaxial rotational speed measuring device that still installs can measure the speed variation range of the superhard grinding wheel of being repaiied through rotational speed measuring device, can judge when speed variation range is less than a definite value and repairment the completion, and is simple and convenient, is difficult to the artificial error of judging moreover to appear.
Further, the pressing device presses the annular abrasive belt and the repaired superhard grinding wheel by pressing the annular abrasive belt.
The beneficial effects of the improvement are as follows: the superhard grinding wheel and the annular abrasive belt are compacted by adjusting the mounting shaft of the superhard grinding wheel, one is that the superhard grinding wheel needs to be mounted on the mounting shaft firstly when the mounting shaft is adjusted, so that the position precision of the superhard grinding wheel relative to the annular abrasive belt is easily influenced when the mounting shaft is adjusted, if the mounting shaft is adjusted, the position of the superhard grinding wheel deviates, and the precision of the repaired superhard grinding wheel is easily out of tolerance; another is that if the endless sanding belt is long, by adjusting the mounting shaft downwards or upwards, it is easy to bring the two parallel sections of the endless sanding belt into contact and affect the use, which limits the length of the endless sanding belt from being too long, and if the endless sanding belt is short, the frequency of changing the endless sanding belt will be high, which will affect the dressing efficiency. However, the annular abrasive belt and the superhard grinding wheel are tightly pressed by pressing the annular abrasive belt, so that the two problems are avoided.
Furthermore, the two pressing devices are distributed on two sides of the repaired superhard grinding wheel.
The beneficial effects of the improvement are as follows: the two pressing devices are arranged on two sides of the superhard grinding wheel, so that the contact area of the annular abrasive belt and the superhard grinding wheel can be increased, and the dressing efficiency is improved.
Further, the pressing device is a tension wheel.
The beneficial effects of the improvement are as follows: a common compression device is provided.
Furthermore, the rotating speed measuring device is a speed measuring encoder.
The beneficial effects of the improvement are as follows: a conventional rotational speed measuring device is provided.
Drawings
FIG. 1 is a schematic structural view of a supporting device for a soft elastic dressing method of a diamond grinding wheel according to the background art;
FIG. 2 is a view showing a state in which the apparatus for frictionally driving dressing of a superhard grinding wheel according to embodiment 1 of the present invention is used;
in the attached figure 1: 101-winding wheel, 102-unwinding wheel, 103-contact wheel, 104-abrasive belt and 105-diamond grinding wheel;
in the attached fig. 2: 1-superhard grinding wheel, 2-driving roll, 3-driven roll, 4-annular abrasive belt and 5-tension wheel.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The embodiment 1 of the friction drive finishing device for the superhard grinding wheel comprises a driving roller 2 and a driven roller 3, wherein the driving roller 2 and the driven roller 3 form a revolving body together, the driving roller 2 also forms the driving revolving body, the driving roller 2 is driven by a motor, an annular abrasive belt 4 is arranged on the driving roller 2 and the driven roller 3, the annular abrasive belt 4 comprises a soft elastic belt body and superhard abrasive diamond embedded on the soft elastic belt body, and the soft elastic belt body is made of matrix materials such as polyurethane, polypropylene, polyethylene and the like. Of course, in other embodiments, two driving rollers may be provided to meet the requirements; in other embodiments, the abrasive material inlaid in the soft elastic belt body may be cubic boron nitride according to different processing objects, or may be other common abrasive materials, and may be selected according to specific processing objects.
The friction driving finishing device for the superhard grinding wheel further comprises an electromagnetic braking motor (not shown in the figure), wherein a speed measuring encoder (not shown in the figure) for measuring the rotating speed of a rotating shaft of the motor is arranged on the electromagnetic braking motor, an extension shaft of the electromagnetic braking motor is used for installing the superhard grinding wheel 1, the extension shaft of the electromagnetic braking motor forms a shaft with a damping effect, the speed measuring encoder forms a rotating speed measuring device, the superhard grinding wheel 1 is arranged above the annular abrasive belt 4 after being installed, the finishing device further comprises two tension pulleys 5 positioned on two sides of the superhard grinding wheel 1, the tension pulleys 5 form a pressing device, and the tension pulleys 5 press the annular abrasive belt 4 to press part of the annular abrasive belt 4 on the surface of the superhard grinding wheel 1. Of course, in other embodiments, the electromagnetic braking motor may be replaced by other devices as long as the installation shaft of the superhard grinding wheel is provided, and the damping structure and the speed measurement encoder are arranged at the part of the installation shaft where the superhard grinding wheel is not installed; the extension shaft of the electromagnetic braking motor can also be positioned below the annular abrasive belt or inside the annular abrasive belt, namely the superhard abrasive wheel is positioned below the annular abrasive belt or inside the annular abrasive belt, and the requirement is met as well, and the corresponding tension wheel can press the annular abrasive belt on the superhard abrasive wheel; only one tension wheel can be arranged to meet the requirement, and the area of the annular abrasive belt pressed on the superhard grinding wheel through the tension wheel is relatively small when only one tension wheel is arranged, so that the dressing efficiency is relatively reduced; the speed measuring encoder can be replaced by other rotating speed measuring devices as long as the rotating speed of the mounting shaft can be measured; the dressing device can be not provided with a rotating speed measuring device, and whether dressing is finished or not can be judged by observing the surface condition of the superhard grinding wheel by an operator; the tensioning wheel can be replaced by other structures, such as a pressing roller, as long as the annular abrasive belt can be pressed on the superhard abrasive wheel in an abutting mode, and the friction between the annular abrasive belt and the annular abrasive belt is small; the pressing device can also be a mechanism for controlling the movement of the mounting shaft of the superhard grinding wheel, such as a lead screw nut mechanism, and the pressing of the superhard grinding wheel is controlled, so that sufficient pressure is generated between the annular abrasive belt and the superhard grinding wheel, and further sufficient sliding friction force is generated.
The operation steps of the embodiment 1 of the friction drive dressing device for the superhard grinding wheel are as follows:
1) mounting the superhard grinding wheel 1 on an extension shaft of an electromagnetic braking motor, and adjusting a tension wheel 5 to ensure that an annular abrasive belt 4 is attached to the surface of the superhard grinding wheel 1 as much as possible;
2) starting a motor connected with the driving roller 2 to drive the driving roller 2 to rotate, so that the annular abrasive belt 4 rotates along with the driving roller 2, wherein the initial surface of the superhard abrasive wheel 1 is smooth, almost no abrasive material is exposed, the friction force is small, the superhard abrasive wheel 1 can hardly rotate under the damping action of the electromagnetic braking motor, and at the moment, the annular abrasive belt 4 only repairs the part in contact with the superhard abrasive wheel;
3) after the grinding materials of the part, in contact with the annular abrasive belt 4, of the superhard grinding wheel 1 slightly expose the edge, a certain friction force is formed between the superhard grinding wheel 1 and the annular abrasive belt 4, the friction force can be adjusted by lifting the tension wheel 5 at the moment, the friction force borne by the superhard grinding wheel 1 overcomes the damping of the electromagnetic braking motor to start rotating, when a new smooth surface is met, the friction coefficient is reduced, the friction force is smaller than the resistance force at the moment, and the annular abrasive belt 4 continues to trim the part, in contact with the superhard grinding wheel 1, of the annular abrasive belt;
4) after the whole surface of the superhard grinding wheel 1 is slightly exposed, the superhard grinding wheel 1 rotates at a constant speed under the driving of the friction force of the annular abrasive belt 4;
5) in the process of uniform motion of the annular abrasive belt 4, the superhard abrasive diamond in the annular abrasive belt 4 is in contact with the abrasive of the superhard grinding wheel 1, so that the abrasive of the superhard grinding wheel 1 is abraded or extruded and crushed, and when the superhard abrasive diamond in the annular abrasive belt 4 is in contact with the bonding agent of the superhard grinding wheel 1, the bonding agent is removed, so that the dressing effect is achieved;
6) when the speed measuring encoder on the electromagnetic braking motor measures that the rotating speed variation amplitude of the superhard grinding wheel 1 is less than 10%, the surface appearance of the superhard grinding wheel 1 is judged to be uniform, and finishing is stopped.
The embodiment of the friction drive dressing method of the superhard grinding wheel is the same as the use method of the friction drive dressing device of the superhard grinding wheel in embodiment 1, and the description is omitted here. Of course, in other embodiments, the speed variation range of the superhard grinding wheel can be set to other values, and is specifically set according to the precision requirement of the superhard grinding wheel.
Claims (8)
1. A friction drive dressing method of a superhard grinding wheel is characterized in that a grinding belt is attached to the grinded superhard grinding wheel tightly arranged on a damping shaft and moves relative to the grinded superhard grinding wheel, and grinding is carried out simultaneously; when the ground superhard grinding wheel rotates, whether the change amplitude of the speed of the ground superhard grinding wheel is within a certain range is detected, so that whether finishing is finished is judged.
2. A method of friction driven dressing of a superhard grinding wheel as claimed in claim 1, wherein a speed measuring means is mounted on the damper shaft to sense the magnitude of the speed change of the superhard grinding wheel being ground.
3. A method of friction driven dressing of a superhard grinding wheel according to claim 1 or claim 2, wherein it is detected whether the magnitude of the speed variation of the superhard grinding wheel being ground is less than 10%, and when the magnitude of the speed variation is less than 10%, it is judged that dressing is complete.
4. A friction driving trimming device for a superhard grinding wheel is characterized by comprising two revolving bodies, wherein at least one of the two revolving bodies is a driving revolving body, an annular abrasive belt for trimming the superhard grinding wheel is wound on the two revolving bodies, the annular abrasive belt comprises a soft elastic belt body and abrasive materials arranged on the soft elastic belt body, the trimming device further comprises an installation shaft for installing the trimmed superhard grinding wheel, the installation shaft is a shaft with a damping effect so as to slide with the superhard grinding wheel in a friction mode when the annular abrasive belt is driven to move by the driving revolving body, a rotating speed measuring device is installed on the installation shaft, and the trimming device further comprises a compressing device for compressing the annular abrasive belt and the trimmed superhard grinding wheel mutually.
5. A friction drive dressing apparatus for a superhard grinding wheel according to claim 4, wherein the compressing means compresses the endless abrasive belt against the superhard grinding wheel being dressed by pressing against the endless abrasive belt.
6. A frictionally actuated dressing device according to claim 5, wherein the pressing means are two and are disposed on either side of the superhard grinding wheel being dressed.
7. A friction drive dressing apparatus according to claim 5 or 6, wherein said pressing means is a tension wheel.
8. A friction drive truing apparatus for superhard grinding wheels as claimed in claim 4, 5 or 6, wherein the rotation speed measuring means is a tachometer encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482061.0A CN109623659B (en) | 2018-12-05 | 2018-12-05 | Friction driving dressing device and friction driving dressing method for superhard grinding wheel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482061.0A CN109623659B (en) | 2018-12-05 | 2018-12-05 | Friction driving dressing device and friction driving dressing method for superhard grinding wheel |
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| Publication Number | Publication Date |
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| CN109623659A CN109623659A (en) | 2019-04-16 |
| CN109623659B true CN109623659B (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811482061.0A Active CN109623659B (en) | 2018-12-05 | 2018-12-05 | Friction driving dressing device and friction driving dressing method for superhard grinding wheel |
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| CN (1) | CN109623659B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115351705A (en) * | 2022-10-21 | 2022-11-18 | 西安奕斯伟材料科技有限公司 | Apparatus and method for dressing grinding wheel |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1277195A (en) * | 1968-07-05 | 1972-06-07 | Leavlite Ltd | Abrasive element cleaning method |
| JPS62107973A (en) * | 1985-11-07 | 1987-05-19 | Takegawa Tekko Kk | Polishing device for belt sander |
| JPH06509519A (en) * | 1991-07-30 | 1994-10-27 | ミネソタ・マイニング・アンド・マニュファクチュアリング・カンパニー | Coated abrasive tool dressed with multi-point cutting tool |
| JP3404579B2 (en) * | 1993-07-09 | 2003-05-12 | 株式会社サンシン | Polishing device for both shafts |
| CN1060110C (en) * | 1995-05-26 | 2001-01-03 | 清华大学 | Soft-elastic dressing method for diamond grinding wheel |
| CN1586816A (en) * | 2004-09-16 | 2005-03-02 | 上海交通大学 | Device and method for continuous laser sharpening resin binder grinding wheel |
| CN203495721U (en) * | 2013-08-30 | 2014-03-26 | 陕西德赛新材料科技有限公司 | Coated abrasive tool finishing device |
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