CN109202692B - Grinding device and grinding operation method - Google Patents
Grinding device and grinding operation method Download PDFInfo
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- CN109202692B CN109202692B CN201710553084.5A CN201710553084A CN109202692B CN 109202692 B CN109202692 B CN 109202692B CN 201710553084 A CN201710553084 A CN 201710553084A CN 109202692 B CN109202692 B CN 109202692B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005498 polishing Methods 0.000 claims description 22
- 239000003082 abrasive agent Substances 0.000 claims description 11
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
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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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
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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
- B24B47/00—Drives or gearings; Equipment therefor
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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
- 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
- B24B49/18—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 presence of dressing tools
- B24B49/186—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 presence of dressing tools taking regard of the wear of the dressing tools
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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
- B24B53/12—Dressing tools; Holders therefor
- B24B53/14—Dressing tools equipped with rotary rollers or cutters; Holders therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The invention provides a grinding device, which comprises a first rotating shaft, a second rotating shaft and a third rotating shaft, wherein a first grinding wheel can be arranged on the first rotating shaft and can be driven to rotate, a second grinding wheel can be arranged on the second rotating shaft and can be driven to rotate, and a third grinding wheel can be arranged on the third rotating shaft and can be driven to rotate. The first rotating shaft can drive the first grinding wheel to move at least in two directions (such as in two XZ directions) under the driving action, so that the first grinding wheel can process the surface of the workpiece and can move to the second grinding wheel on the second rotating shaft. The second rotating shaft can drive the second grinding wheel to rotate under the driving action so that the second grinding wheel can finish the first grinding wheel on the first rotating shaft. The third rotating shaft can drive the third grinding wheel to rotate under the driving action so that the third grinding wheel can finish the second grinding wheel.
Description
Technical Field
The present invention relates to a grinding apparatus and a grinding operation method, and particularly to a grinding apparatus and a grinding operation method with an on-line grinding wheel dressing function.
Background
Grinding wheels (e.g., sintered grinding wheels) have excellent grinding performance and are widely used in the processing of hard materials such as metal and glass materials. However, grinding wheels are also clogged with swarf and deformed by wear during use, requiring dressing, especially when working with hard and brittle materials, which wears out the grinding wheel more quickly. It is now common practice in the industry to remove the grinding wheel or the mounting shaft associated with the grinding wheel from the machine, such as a CNC machine, and then mount the grinding wheel to a special dressing machine, to dress the grinding wheel with other types of grinding wheels or tools (typically including both dressing and dressing steps), and then mount the grinding wheel to the machine after dressing. The dressing mode can not realize the automatic dressing of the grinding wheel, the dressing period is long, the operation is inconvenient, and the quality of the workpiece is unstable due to the fact that the grinding wheel is clamped for the second time and errors are easily generated.
Therefore, the efficient and high-quality dressing technology of the grinding wheel becomes a key technology for realizing precise grinding, high-speed and efficient grinding and grinding automation of hard and brittle materials. Therefore, it is urgent to develop a method and apparatus for on-line dressing of a grinding wheel with low cost and high efficiency.
Disclosure of Invention
It is an object of the present invention to provide a grinding apparatus and method that can automatically dress a grinding wheel mounted on a machine, such as a CNC machine, without disassembling the grinding wheel.
According to an aspect of the present invention, there is provided a grinding apparatus comprising: the device comprises a first rotating shaft, a second rotating shaft, a first driving unit capable of driving the first rotating shaft and a second driving unit capable of driving the second rotating shaft. Wherein, the mountable first grinding miller is rotatory and drives first grinding miller rotation when driven in the first pivot, and the mountable second grinding miller is rotatory and drives the second grinding miller when driven in the second pivot. Furthermore, the grinding device also comprises a third rotating shaft and a third driving unit which can drive the third rotating shaft, and a third grinding wheel can be arranged on the third rotating shaft and can be driven to rotate when being driven. Moreover, the first rotating shaft can drive the first grinding wheel to move in at least two directions (such as two XZ directions) under the driving of the first driving unit, so that the first grinding wheel can perform surface processing on the workpiece and can move to the second grinding wheel on the second rotating shaft. The second rotating shaft can drive the second grinding wheel to rotate under the driving of the second driving unit so that the second grinding wheel can finish the first grinding wheel on the first rotating shaft. The third rotating shaft can drive the third grinding wheel to rotate under the driving of the third driving unit so that the third grinding wheel can finish the second grinding wheel.
According to another aspect of the present invention, there is provided a grinding apparatus comprising: the grinding device comprises a first rotating shaft, a second rotating shaft, a first grinding wheel capable of being mounted on the first rotating shaft, a second grinding wheel capable of being mounted on the second rotating shaft, a first driving unit capable of driving the first rotating shaft and a second driving unit capable of driving the second rotating shaft. Further, the grinding device also comprises a third rotating shaft, a third grinding wheel which can be arranged on the third rotating shaft and a third driving unit which can drive the third rotating shaft. The first rotating shaft can drive the first grinding wheel to rotate under the driving of the first driving unit and can move in at least two directions (such as two XZ directions), so that the first grinding wheel can perform surface processing on a workpiece and can move to the second grinding wheel. The second rotating shaft can drive the second grinding wheel to rotate under the driving of the second driving unit so that the second grinding wheel can finish the first grinding wheel, and when the second grinding wheel finishes the first grinding wheel, the contact between the first grinding wheel and the second grinding wheel comprises linear contact. The third rotating shaft can drive the third grinding wheel to rotate under the driving of the third driving unit so that the third grinding wheel can finish the second grinding wheel, and when the third grinding wheel finishes the second grinding wheel, the contact between the third grinding wheel and the second grinding wheel comprises linear contact.
According to yet another aspect of the present invention, there is provided a method of grinding operations comprising the steps of: driving the first rotating shaft to drive the first grinding wheel on the first rotating shaft to move towards a second grinding wheel arranged on the second rotating shaft; driving the first rotating shaft and the second rotating shaft to enable the first grinding wheel and the second grinding wheel to be in linear contact and enable the second grinding wheel to trim the first grinding wheel; driving the third rotating shaft to drive the third grinding wheel on the third rotating shaft to move towards the second grinding wheel arranged on the second rotating shaft; and driving the third rotating shaft and the second rotating shaft to enable the third grinding wheel to be in linear contact with the second grinding wheel and enable the third grinding wheel to trim the second grinding wheel.
The invention has the following beneficial effects: the grinding device and the grinding operation method provided by the invention can realize the online automatic dressing of the grinding wheel installed on equipment (such as a CNC machine tool) without disassembling the grinding wheel, simplify the dressing process, reduce the dressing period, improve the dressing efficiency and further improve the grinding efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the following drawings merely illustrate some embodiments of the present invention, and that other drawings may be obtained by those skilled in the art without inventive efforts. Moreover, these drawings should not be construed as limiting the invention in any way.
FIG. 1 is a schematic view showing a structure of a polishing apparatus according to an embodiment of the present invention;
fig. 2a, 2b, 2c are schematic structural views of applicable first, second and third grinding wheels, respectively, of the grinding apparatus according to the embodiment of the present invention.
Detailed Description
It should be noted that the following embodiments are exemplary illustrations of the present invention, and features in different embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to specific embodiments with reference to the attached drawings.
Fig. 1 is a schematic structural diagram of a polishing apparatus according to an embodiment of the present invention.
A grinding apparatus 100 comprising: the device comprises a first rotating shaft 10, a second rotating shaft 20, a first driving unit 11 capable of driving the first rotating shaft 10 and a second driving unit 21 capable of driving the second rotating shaft 20. The first rotating shaft 10 can be provided with a first grinding wheel 12 and drive the first grinding wheel 12 to rotate when being driven, and the second rotating shaft 20 can be provided with a second grinding wheel 22 and drive the second grinding wheel 22 to rotate when being driven. The polishing apparatus 100 further includes a third shaft 30 and a third driving unit 31 capable of driving the third shaft 30, wherein the third shaft 30 is capable of mounting a third polishing wheel 32 thereon and driving the third polishing wheel 32 to rotate when being driven.
The first rotating shaft 10 can move the first grinding wheel 12 in at least two directions, for example, in two directions XZ, under the driving of the first driving unit 11, so that the first grinding wheel 12 can be easily moved to the workpiece 60 on the table with a relatively simple driving. In various embodiments, the first grinding wheel 12 may be movable in all three directions XYZ, and although the driving arrangement may become complicated, the first grinding wheel 12 may be driven to move more flexibly. After the first grinding wheel 12 and the workpiece 60 are in place, the first driving unit 11 drives the first rotating shaft 10 to drive the first grinding wheel 12 to rotate so as to perform surface processing on the workpiece 60, such as surface polishing of the workpiece 60, edge polishing of the workpiece to a desired shape, and the like.
As the workpiece 60 is processed by the first grinding wheel 12, the first grinding wheel 12 is also worn to the extent that it needs to be dressed to maintain the desired contour. Therefore, the first rotating shaft 10 is configured to move the first grinding wheel 12 to the second grinding wheel 22 on the second rotating shaft 20 under the driving of the first driving unit 11. Preferably, the relative position of the second shaft 20 is fixed, which makes the whole dressing device easier and simplifies the operation. Of course, in other embodiments, the second rotating shaft 20 may also be configured to drive the second grinding wheel 22 to move in three directions of X or/and Y or/and Z under the driving of the second driving unit 21. The second shaft 20 is configured to drive the second grinding wheel 22 to rotate under the driving of the second driving unit 21 so that the second grinding wheel 22 trims the first grinding wheel 12 on the first shaft 10.
While the second grinding wheel 22 dresses the first grinding wheel 12 on the first shaft 10, the second grinding wheel 22 is worn away, and when the second grinding wheel 22 is worn to a degree that requires dressing to maintain the desired profile. Therefore, the third shaft 30 is configured to drive the third grinding wheel 32 to rotate under the driving of the third driving unit 31 to perform dressing on the second grinding wheel 22. Preferably, the third shaft 30 is configured to move at least in the X direction under the driving of the third driving unit 31 so as to move the third grinding wheel 33 toward the second grinding wheel 22 on the second shaft 20. In different embodiments, the third rotating shaft 30 can also be configured to move in XYZ directions under the driving of the third driving unit 31, so as to flexibly adjust the relative positions of the third grinding wheel 33 and the second grinding wheel 22, and achieve better matching of the outer contour of the grinding wheel during dressing.
In one embodiment, the relative position of the second rotating shaft 20 remains unchanged, so that the second grinding wheel 22 can make a rotational movement or extend or retract along the extending direction of the rotating shaft without being displaced in other directions. The axis of the third shaft 30 is parallel to the axis of the second shaft 20, and the third shaft 30 is connected to a mechanical structure (not shown) so as to be movable on a guide 33, such as an X-guide, as a whole or under the driving of the mechanical structure. The axes of the second spindle 20 and the first spindle 10 are parallel to each other when the second grinding wheel 22 dresses the first grinding wheel 12 on the first spindle 10. Of course, the first rotating shaft 10 can move the first grinding wheel 12 in at least two directions XZ under the driving of the first driving unit 11 to move the first grinding wheel 12 according to the position of the workpiece. Thus, the relative position of the second rotating shaft 20 is fixed, and the first rotating shaft 10 and the third rotating shaft 30 can move relatively, which not only can satisfy the basic functions of the present invention and achieve the required technical effects, but also can simplify the structure and the operation process.
In one embodiment, the rotational speeds of the first, second and third shafts 10, 20, 30 are optionally set such that the linear velocities of the first and third wheels 12, 32 in contact with each other are 2 to 4 times the linear velocity of the second wheel 22, respectively, when performing wheel truing. Preferably, the rotational speeds of the first and third rotating shafts 10 and 30 are set such that the linear speeds of the first and third grinding wheels 12 and 32 at the contact point are substantially equal and 2.5 times the linear speed of the second grinding wheel 22, respectively. Therefore, the dressing effect can be better ensured through controlling the speed. The "contact point" refers to the point or contour of the joint between the two abrasive wheels during dressing.
The first and second spindles 10, 20 are further configured such that when the second grinding wheel 22 dresses the first grinding wheel 12, the first grinding wheel 12 and the second grinding wheel 22 are in linear contact; the second and third shafts 20, 30 are further configured such that the third grinding wheel 32 makes linear contact with the second grinding wheel 22 when the third grinding wheel 32 dresses the second grinding wheel 22.
In some applications, depending on different requirements, especially when the grinding wheels have special configurations, the positional relationship between the first rotating shaft 10, the second rotating shaft 20 and the third rotating shaft 30 can be adjusted to adjust the contact between the first grinding wheel 12 and the second grinding wheel 22, and between the third grinding wheel 32 and the second grinding wheel 22, respectively, to be surface contact and then line contact, or even point contact in some cases, during the dressing process. During dressing, surface contact and line contact can improve dressing efficiency, point contact can improve dressing precision, and perfect combination of efficiency and precision can be realized through point, line and surface contact.
In an embodiment, the grinding apparatus 100 further includes a first grinding wheel 12, a second grinding wheel 22, and a third grinding wheel 32, wherein the first grinding wheel 12, the second grinding wheel 22, and the third grinding wheel 32 are correspondingly mounted on the first rotating shaft 10, the second rotating shaft 20, and the third rotating shaft 30, respectively. The first grinding wheel 12, the second grinding wheel 22 and the third grinding wheel 32 can be installed on the first rotating shaft 10, the second rotating shaft 20 and the third rotating shaft 30 correspondingly according to different requirements when the grinding device 100 is used. The polishing apparatus 100 is typically not included in the factory.
The first grinding wheel 12, second grinding wheel 22, and third grinding wheel 32 may be standard disk-shaped grinding wheels. In some particular cases, the first grinding wheel 12 may be in other shapes, such as a grinding wheel having a generally circular disk shape with curved sides at least partially contoured to provide a surface treatment to a workpiece to provide some irregular surface. Generally, the first grinding wheel 12 is selected based on the material of the workpiece and the surface desired to be obtained after machining the workpiece. The second grinding wheel 22 and the third grinding wheel 32 need to be selected according to the first grinding wheel 12.
In one embodiment, at least a portion of the outer contour of the outboard face of the first abrasive wheel 12 (which can also be understood as the contour of the face of the grinding wheel that is cut in the axial direction) is curvilinear, and at least a portion of the outer contour of the outboard face of the second abrasive wheel 22 mates with at least a portion of the curvilinear outer contour of the first abrasive wheel 12. Specifically, the engagement contours of the first grinding wheel 12 and the second grinding wheel 22 are matched, e.g., substantially complementary. At least a portion of the outer contour of the outboard face of the third abrasive wheel 32 and the curvilinear outer contour of the first abrasive wheel 12 may be coincident with each other, e.g., the portion of the outer contour at the juncture contour of the two abrasive wheels is of the same configuration and size. For example, as shown in fig. 2a, at least a part of the outer contour line 121 of the outer surface of the first grinding wheel 12 is a concave circular arc, as shown in fig. 2b, at least a part of the outer contour line 221 of the outer surface of the second grinding wheel 22 is a convex circular arc matched with the concave circular arc shaped outer contour line 121 of the first grinding wheel 12, and as shown in fig. 2c, at least a part of the outer contour line 321 of the outer surface of the third grinding wheel 32 is the same as the concave circular arc shaped curved outer contour line 121 of the first grinding wheel 12. Thus, when second abrasive wheel 22 dresses first abrasive wheel 12, first abrasive wheel 12 and second abrasive wheel 22 are in arcuate contact; third abrasive wheel 32 is in arcuate contact with second abrasive wheel 22 as third abrasive wheel 32 dresses second abrasive wheel 22. The linear contact between the grinding wheels improves the dressing efficiency of the grinding wheels, and the design of the outer contour line of the outer side surface of the grinding wheels enables the grinding wheels to be efficiently dressed to the required contour.
In terms of wheel hardness, the second wheel 22 contains abrasives having a hardness lower than the hardness of the abrasives contained in the first wheel 12 and the third wheel 32, and the second wheel 22 contains abrasives having a hardness higher than the hardness of the binder of the first wheel 12. In one embodiment, the first wheel 12 and the third wheel 32 include abrasives having a hardness that is approximately the same or 12 the first wheel includes abrasives having a hardness that is less than the hardness of the abrasives included in the third wheel 32. Preferably, the abrasive contained in the first grinding wheel 12 comprises diamond. The abrasive contained in the second grinding wheel 22 comprises ceramic. The abrasive contained in the third grinding wheel 32 comprises diamond or cubic boron nitride CBN.
In the industry, the first grinding wheel is also referred to as a grinding wheel, and the second and third grinding wheels are also referred to as dressing wheels.
It is understood that the first drive unit 11, the second drive unit 21 and the third drive unit 31 may be three separate drive elements or may be one and the same drive element. Specifically, three motors may be provided or one motor may drive three rotating shafts respectively. Generally, the first drive unit 11, the second drive unit 21 and the third drive unit 31 operate under the control of one or more control units.
Preferably, the grinding device provided by the embodiment of the invention is installed on a CNC (computer numerical control) machine tool, so that the existing CNC machine tool can be upgraded, and the grinding machine tool with the grinding wheel capable of being dressed online is formed. The automatic online dressing method has the advantages that the grinding wheel installed on the CNC machine tool can be automatically dressed online without disassembling the grinding wheel, the dressing process is simplified, the dressing period is shortened, and the dressing efficiency is improved.
The embodiment of the invention also provides a grinding operation method, which comprises the following steps:
driving the first rotating shaft to drive the first grinding wheel on the first rotating shaft to move towards a second grinding wheel arranged on the second rotating shaft;
driving the first rotating shaft and the second rotating shaft to enable the first grinding wheel and the second grinding wheel to be in linear contact and enable the second grinding wheel to trim the first grinding wheel;
driving the third rotating shaft to drive the third grinding wheel on the third rotating shaft to move towards the second grinding wheel arranged on the second rotating shaft;
and driving the third rotating shaft and the second rotating shaft to enable the third grinding wheel to be in linear contact with the second grinding wheel and enable the third grinding wheel to trim the second grinding wheel.
In an embodiment, after the second grinding wheel finishes dressing the first grinding wheel, the first rotating shaft is driven to drive the first grinding wheel to move towards the workpiece. And then the first rotating shaft is driven to drive the first grinding wheel on the first rotating shaft to perform surface treatment on the workpiece, such as grinding the surface of the workpiece. Preferably, in order to improve the efficiency, the third grinding wheel can be used for dressing the second grinding wheel when the first rotating shaft is driven to drive the first grinding wheel on the first rotating shaft to perform surface processing on the workpiece.
When the dressing is carried out, in order to realize better dressing effect, the rotating speeds of the first rotating shaft, the second rotating shaft and the third rotating shaft are adjusted to ensure that the linear speeds of the first grinding wheel and the third grinding wheel at the positions where the first rotating shaft, the second rotating shaft and the third rotating shaft are contacted with each other are respectively 2 times to 4 times of the linear speed of the second grinding wheel. Preferably, the rotating speeds of the first rotating shaft and the third rotating shaft are adjusted to make the linear speeds of the first grinding wheel and the third grinding wheel at the contact part of the first rotating shaft and the third rotating shaft approximately equal and respectively 2.5 times of the linear speed of the second grinding wheel.
It is to be understood that the above-described embodiments are merely illustrative and not restrictive of the current invention, and that modifications and variations may be made to the present invention without departing from the spirit and scope of the present invention as those skilled in the art understand. Such modifications and variations are considered to be within the purview and scope of the invention and the appended claims. The scope of protection of the invention is defined by the appended claims. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention. Use of the verb "comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The indefinite article "a" or "an" preceding an element or step does not exclude the presence of a plurality of such elements or steps.
Claims (20)
1. A grinding apparatus comprising: first pivot, second pivot, can drive the first drive unit of first pivot and can drive the second drive unit of second pivot, wherein, the mountable first grinding miller is rotatory and drives first grinding miller rotation when driven in the first pivot, the mountable second grinding miller is rotatory and drives the second grinding miller rotation when driven in the second pivot, its characterized in that:
the grinding machine also comprises a third rotating shaft and a third driving unit capable of driving the third rotating shaft, wherein a third grinding wheel can be mounted on the third rotating shaft and is driven to rotate;
the first rotating shaft can drive the first grinding wheel to move in at least two directions under the driving of the first driving unit, so that the first grinding wheel can process a workpiece and/or can move to the second grinding wheel on the second rotating shaft;
the second rotating shaft can drive the second grinding wheel to finish the first grinding wheel on the first rotating shaft under the driving of the second driving unit;
the third rotating shaft can drive the third grinding wheel to finish the second grinding wheel under the driving of the third driving unit,
the grinding device is arranged in such a way that when the first rotating shaft is driven by the first driving unit and drives the first grinding wheel to process a workpiece, the third rotating shaft can be driven by the third driving unit and drives the third grinding wheel to trim the second grinding wheel.
2. The polishing apparatus as claimed in claim 1, wherein the third shaft is driven by the third driving unit to move the third polishing wheel at least in the X direction so as to move the third polishing wheel toward the second polishing wheel on the second shaft.
3. A grinding apparatus according to claim 1 or claim 2, wherein the relative position of the second shaft is fixed.
4. A grinding apparatus according to claim 1 or 2, wherein the third shaft is arranged to be movable on a guide rail.
5. The abrading apparatus of claim 1 or 2, wherein the first and second rotating shafts are further configured such that when the second abrading wheel dresses the first abrading wheel, the contact of the first abrading wheel and the second abrading wheel comprises a line contact; the second rotating shaft and the third rotating shaft are further arranged so that when the third grinding wheel trims the second grinding wheel, the contact between the third grinding wheel and the second grinding wheel comprises line contact.
6. The grinding apparatus as claimed in claim 1, wherein the first rotating shaft, the second rotating shaft and the third rotating shaft are rotated at such speeds that the linear speeds of the first grinding wheel and the third grinding wheel at the point of contact with each other are 2 to 4 times the linear speed of the second grinding wheel, respectively, at the time of dressing.
7. A grinding apparatus according to claim 6, wherein the first and third shafts are rotated at such speeds that the linear speeds of the first and third grinding wheels at the point of contact with each other are equal to each other and are each 2.5 times the linear speed of the second grinding wheel.
8. The grinding device of claim 1, further comprising a first grinding wheel, a second grinding wheel, and a third grinding wheel, wherein the first grinding wheel, the second grinding wheel, and the third grinding wheel are respectively mounted on the first rotating shaft, the second rotating shaft, and the third rotating shaft.
9. The abrading apparatus of claim 8, wherein at least a portion of the outer side of the first abrasive wheel is curvilinear, wherein at least a portion of the outer side of the second abrasive wheel is complementary to at least a portion of the curvilinear outer side of the first abrasive wheel, and wherein at least a portion of the outer side of the third abrasive wheel is congruent with at least a portion of the curvilinear outer side of the first abrasive wheel.
10. The polishing apparatus as set forth in claim 8, wherein at least a part of the outer contour of the outer side surface of the first polishing wheel has a concave circular arc shape, at least a part of the outer contour of the outer side surface of the second polishing wheel has a convex circular arc shape matching the concave circular arc-shaped outer contour of the first polishing wheel, and at least a part of the outer contour of the outer side surface of the third polishing wheel is coincident with the concave circular arc-shaped curved outer contour of the first polishing wheel.
11. The abrading apparatus of claim 8, wherein the second wheel comprises an abrasive having a hardness that is less than a hardness of an abrasive of the first wheel and the third wheel, and wherein the second wheel comprises an abrasive having a hardness that is greater than a hardness of the bond of the first wheel.
12. The abrading apparatus of claim 8 or 11, wherein the first abrading wheel and the third abrading wheel comprise abrasive materials having a hardness that is comparable to or lower than the abrasive material of the third abrading wheel.
13. The abrading apparatus of claim 8 or 11, wherein the abrasive material contained in the first wheel comprises diamond.
14. The abrading apparatus of claim 8 or 11, wherein the abrasive material of the second wheel comprises ceramic.
15. The abrading apparatus of claim 8 or 11, wherein the abrasive material of the third wheel comprises diamond.
16. A grinding apparatus comprising: the grinding machine comprises a first rotating shaft, a second rotating shaft, a first grinding wheel capable of being mounted on the first rotating shaft, a second grinding wheel capable of being mounted on the second rotating shaft, a first driving unit capable of driving the first rotating shaft and a second driving unit capable of driving the second rotating shaft, and is characterized in that:
the grinding machine also comprises a third rotating shaft, a third grinding wheel which can be arranged on the third rotating shaft and a third driving unit which can drive the third rotating shaft; wherein,
the first rotating shaft can drive the first grinding wheel to rotate under the driving of the first driving unit and can move in at least two directions, so that the first grinding wheel can perform surface processing treatment on a workpiece and can move to the second grinding wheel;
the second rotating shaft can drive the second grinding wheel to rotate under the driving of the second driving unit so as to enable the second grinding wheel to trim the first grinding wheel, and the contact between the first grinding wheel and the second grinding wheel when the second grinding wheel trims the first grinding wheel comprises linear contact;
the third rotating shaft can drive the third grinding wheel to rotate under the driving of the third driving unit so as to enable the third grinding wheel to trim the second grinding wheel, and the contact between the third grinding wheel and the second grinding wheel when the third grinding wheel trims the second grinding wheel comprises linear contact,
the grinding device is arranged so that when the first rotating shaft is driven by the first driving unit and drives the first grinding wheel to machine a workpiece, the third rotating shaft can be driven by the third driving unit and drives the third grinding wheel to dress the second grinding wheel.
17. The abrading apparatus of claim 16, wherein the first abrasive wheel and the second abrasive wheel are in arcuate contact when the second abrasive wheel dresses the first abrasive wheel; when the third grinding wheel trims the second grinding wheel, the third grinding wheel and the second grinding wheel are in arc linear contact.
18. The polishing apparatus as claimed in claim 16, wherein the relative position of the second shaft is kept unchanged, and the third shaft is driven by the third driving unit to move the third polishing wheel at least in the X direction so as to move the third polishing wheel toward the second polishing wheel on the second shaft.
19. A method of grinding operations comprising the steps of:
driving the first rotating shaft to drive the first grinding wheel on the first rotating shaft to move towards a second grinding wheel arranged on the second rotating shaft;
driving the first rotating shaft and the second rotating shaft to enable the first grinding wheel and the second grinding wheel to be in linear contact and enable the second grinding wheel to trim the first grinding wheel;
driving the third rotating shaft to drive the third grinding wheel on the third rotating shaft to move towards the second grinding wheel arranged on the second rotating shaft;
the third rotating shaft and the second rotating shaft are driven to enable the third grinding wheel to be in linear contact with the second grinding wheel and enable the third grinding wheel to finish the second grinding wheel,
wherein the first spindle can be driven to move the first grinding wheel in at least two directions, so that the first grinding wheel can process a workpiece and/or can move to the second grinding wheel on the second spindle,
the method further comprises the following steps: and driving the first rotating shaft to drive the first grinding wheel on the first rotating shaft to perform surface processing treatment on the workpiece, and driving the third grinding wheel to trim the second grinding wheel.
20. The method of claim 19, wherein after the dressing of the first abrasive wheel by the second abrasive wheel is completed, the first rotating shaft is driven to move the first abrasive wheel thereon toward the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| KR102339948B1 (en) * | 2019-07-02 | 2021-12-17 | (주)미래컴퍼니 | Polishing system and polishing method |
| CN110509126B (en) * | 2019-08-27 | 2020-07-14 | 江阴塞特精密工具有限公司 | Multi-grinding-wheel molding line shoveling and grinding process of ultra-small module gear hob |
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| JP2961504B2 (en) * | 1994-11-25 | 1999-10-12 | 克雄 庄司 | Truing method and apparatus for grinding wheel |
| JP3808236B2 (en) * | 1999-05-07 | 2006-08-09 | 株式会社日立製作所 | Flattening device |
| JP4441823B2 (en) * | 2003-11-26 | 2010-03-31 | 株式会社東京精密 | Truing method and chamfering device for chamfering grindstone |
| JP4742845B2 (en) * | 2005-12-15 | 2011-08-10 | 信越半導体株式会社 | Method for processing chamfered portion of semiconductor wafer and method for correcting groove shape of grindstone |
| DE102008004848A1 (en) * | 2008-01-17 | 2009-07-23 | Vollmer Werke Maschinenfabrik Gmbh | Apparatus and method for dressing a machining disk by means of a rotary dressing tool and machine tool with such a device |
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