Grinding machine and working method of a grinding machine

Abstract

The application provides a grinding machine and a working method of the grinding machine, and relates to the technical field of grinding machine dressing. The grinding machine is used for machining a first blade, and comprises a grinding wheel and a second blade. The grinding wheel comprises a grinding surface, and the hardness of the second blade is greater than that of the first blade. The grinding surface is in contact with the second blade when the grinding surface is in contact with the first blade. When the grinding machine is used for machining the first blade, the grinding wheel can grind the first blade and the second blade at the same time. Since the hardness of the second blade is greater than that of the first blade, the wear of the grinding wheel when grinding the second blade is greater than that when grinding the first blade. In this way, the grinding wheel is cleaned by the second blade, and the cleaning cost of the grinding wheel is reduced. Meanwhile, when the second blade cleans the grinding wheel, the grinding wheel also machines the second blade, so that the utilization rate of the grinding wheel is improved.

Description

Technical Field

[0001] This application relates to the field of grinding machine dressing technology, and in particular to a grinding machine and a method of working on the grinding machine. Background Technology

[0002] Peripheral grinders are machine tools that grind the periphery of a workpiece by rotating and feeding a main grinding wheel. They are mainly used in the superhard tool grinding industry.

[0003] The main grinding wheel is primarily made of diamond. Irregularly shaped diamond particles of the same size and diameter are sintered onto the grinding wheel matrix using a binder, resulting in an uneven microscopic surface. Microscopically, the diamond particles protrude from the grinding wheel, forming "peaks" to maintain sharpness. However, when the main grinding wheel grinds a workpiece, the material particles that fall off the workpiece during grinding adhere to the main grinding wheel, clogging the gaps between the diamond particles. This makes the microscopic surface of the grinding wheel smooth, causing it to lose its sharpness and reducing grinding force.

[0004] The current mainstream method for dealing with grinding wheel clogging is to install a cleaning wheel on the grinding machine. This cleaning wheel, made of large-particle white fused alumina, grinds against the main grinding wheel during the grinding process to remove clogging from its surface. This method of cleaning and smoothing the grinding wheel consumes both the main grinding wheel and the dressing wheel. Because the hardness of the main grinding wheel is much greater than that of the white fused alumina cleaning wheel, the consumption of cleaning wheels is significant, resulting in high grinding costs. Summary of the Invention

[0005] In view of this, this application provides a grinding machine and a method of working on the grinding machine to solve the problem of high cost of cleaning grinding wheels using white corundum cleaning wheels.

[0006] According to one aspect of this application, a grinding machine is provided for processing a first cutting tool. The grinding machine includes a grinding wheel and a second cutting tool. The grinding wheel includes a grinding surface, and the hardness of the second cutting tool is greater than that of the first cutting tool.

[0007] When the grinding surface contacts the first cutting tool, the grinding surface contacts the second cutting tool.

[0008] Preferably, the second blade is disposed on one side of the first blade in a predetermined direction, and the grinding machine further includes a drive mechanism connected to the grinding wheel. The drive mechanism is capable of driving the grinding wheel to rotate and driving the grinding wheel to move between a first position and a second position along the predetermined direction.

[0009] When the grinding wheel is in the first position, the first cutting blade is arranged at intervals with the grinding wheel along the predetermined direction, and the second cutting blade is in contact with the grinding surface.

[0010] When the grinding wheel is in the second position, both the first cutting tool and the second cutting tool are in contact with the grinding surface.

[0011] Preferably, the grinding machine includes a frame and a clamping fixture, the clamping fixture being fixed on the frame, the second blade and the first blade being fixed on the clamping fixture, and the second blade and the first blade being stacked along the predetermined direction.

[0012] Preferably, the grinding machine includes a frame, a drive mechanism, and two clamping fixtures. The two clamping fixtures are arranged at intervals along the circumference of the grinding wheel. Both clamping fixtures are mounted on the frame. The first cutting tool and the grinding wheel are respectively fixed on the two clamping fixtures. The drive mechanism can drive the grinding wheel to rotate.

[0013] Preferably, the grinding wheel has a rotation axis, the grinding wheel rotates about the rotation axis, and the distance between the first blade and the rotation axis is equal to the distance between the second blade and the rotation axis.

[0014] Preferably, the first blade is a PCBN blade and the second blade is a PCD blade.

[0015] Preferably, the first blade is a cemented carbide blade, and the second blade is a PCBN blade.

[0016] Preferably, the first blade is a ceramic blade, and the second blade is a cemented carbide blade.

[0017] Preferably, both the first blade and the second blade are PCBN blades, and the CBN content of the first blade is less than the CBN content of the second blade.

[0018] According to another aspect of this application, a method for operating a grinding machine is provided, the method of operating the grinding machine described above, the method of operating the grinding machine comprising:

[0019] S1. Select the second blade based on the material of the first blade;

[0020] S2. Fix the first blade and the second blade, and move the grinding wheel so that when the grinding surface contacts the first blade, the grinding surface contacts the second blade;

[0021] S3. Set the feed speed and rotation speed of the grinding wheel, and control the grinding wheel to grind the first blade and the second blade.

[0022] In the grinding machine of this application, the grinding machine includes a grinding wheel and a second cutting tool. The grinding wheel includes a grinding surface, and the hardness of the second cutting tool is greater than that of the first cutting tool. When the grinding surface contacts the first cutting tool, it also contacts the second cutting tool. When the grinding machine processes the first cutting tool, the grinding wheel can simultaneously grind both the first and second cutting tools. Because the hardness of the second cutting tool is greater than that of the first cutting tool, the wear of the grinding wheel when grinding the second cutting tool is greater than the wear when grinding the first cutting tool. Therefore, the grinding wheel can be cleaned using the second cutting tool. Compared to cleaning the grinding wheel using a white corundum cleaning wheel, cleaning the grinding wheel using the second cutting tool results in less wear, thus reducing the cleaning cost of the grinding wheel. Simultaneously, while the second cutting tool is cleaning the grinding wheel, the grinding wheel also processes the second cutting tool, thereby improving the utilization rate of the grinding wheel. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A partial structural schematic diagram of the grinding machine according to Embodiment 1 of the present invention is shown;

[0025] Figure 2 A partial structural schematic diagram of the grinding machine according to Embodiment 2 of the present invention is shown;

[0026] Figure 3 A flowchart illustrating the working method of a grinding machine.

[0027] Icons: 1-grinding wheel; 11-grinding surface; 2-first cutting tool; 3-second cutting tool; L-predetermined direction. Detailed Implementation

[0028] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0029] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0030] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0031] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0032] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0033] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0034] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0035] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0036] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0037] According to one aspect of this application, a grinding machine is provided, such as... Figure 1 and Figure 2 As shown, a grinding machine is used to process a first insert 2. The grinding machine includes a grinding wheel 1 and a second insert 3. The grinding wheel 1 includes a grinding surface 11, and the hardness of the second insert 3 is greater than that of the first insert 2. When the grinding surface 11 contacts the first insert 2, it also contacts the second insert 3. When the grinding machine processes the first insert 2, the grinding wheel 1 can simultaneously grind both the first insert 2 and the second insert 3. Because the hardness of the second insert 3 is greater than that of the first insert 2, the wear of the grinding wheel 1 when grinding the second insert 3 is greater than the wear when grinding the first insert 2. Therefore, the second insert 3 can be used to clean the grinding wheel 1. Compared to using a white corundum cleaning wheel, using the second insert 3 to clean the grinding wheel 1 results in less wear on the grinding wheel 1, thus reducing the cleaning cost. Simultaneously, while the second insert is cleaning the grinding wheel, the grinding wheel also processes the second insert, thereby improving the utilization rate of the grinding wheel.

[0038] In addition, after the second blade 3 has been used for a period of time, the second blade 3 is ground and can be used normally. In other words, the grinding wheel 1 can also perform grinding on the second blade 3 during the cleaning process, thereby improving the utilization rate of the grinding wheel 1.

[0039] Furthermore, the grinding machine includes a frame and a drive mechanism. The grinding wheel 1 has a rotation axis, and the drive mechanism is fixed to the frame and connected to the grinding wheel 1, thereby driving the grinding wheel 1 to translate and rotate about the rotation axis. The drive mechanism can be a drive mechanism used in existing grinding machines for driving the translation and rotation of the grinding wheel 1, which will not be described in detail here.

[0040] Optionally, the mounting positions of the first blade 2 and the second blade 3 can be selected according to requirements, as will be discussed below. Figure 1 Example 1 and Figure 2 The second embodiment describes the installation positions of the first blade 2 and the second blade 3.

[0041] Example 1

[0042] In this embodiment, as Figure 1 As shown, the second cutting tool 3 is positioned on one side of the first cutting tool 2 along a predetermined direction L. Specifically, the grinding machine includes a clamping fixture connected to a frame. Both the second cutting tool 3 and the first cutting tool 2 are fixed to the clamping fixture, and the second cutting tool 3 and the first cutting tool 2 are stacked along the predetermined direction L, such that the second cutting tool 3 is located on one side of the first cutting tool 2 along the predetermined direction L. When grinding the first cutting tool 2 using the grinding machine, the predetermined direction L is parallel to the grinding surface 11.

[0043] Furthermore, when the drive mechanism moves the grinding wheel 1 to the position where the grinding surface 11 contacts the second cutting tool 3 and the first cutting tool 2 does not contact the grinding surface 11, the grinding wheel 1 is in the first position. Afterward, the drive mechanism can drive the grinding wheel 1 to rotate and move it along a predetermined direction L between the first and second positions. When the grinding wheel 1 is in the first position, the first cutting tool 2 is spaced apart from the grinding wheel 1 along the predetermined direction L, and the second cutting tool 3 contacts the grinding surface 11. When the grinding wheel 1 is in the second position, both the first cutting tool 2 and the second cutting tool 3 are in contact with the grinding surface 11. The grinding wheel 1 can move along the predetermined direction L between the first and second positions while rotating. During this movement, the position where the grinding wheel 1 contacts the first cutting tool 2 can contact the second cutting tool 3 to grind the second cutting tool 3. Since the hardness of the second cutting tool 3 is greater than that of the first cutting tool 2, the second cutting tool 3 can clean the position where the grinding wheel 1 contacts the first cutting tool 2.

[0044] Example 2

[0045] In this embodiment, the grinding machine includes two clamping fixtures, both connected to a frame. The two fixtures are spaced apart circumferentially along the grinding wheel 1 and are radially opposite to each other. The second cutting insert 3 and the first cutting insert 2 are respectively fixed to the two clamping fixtures, ensuring they are radially opposite to each other on the grinding wheel 1. The radial distance between the second cutting insert 3 and the axis of rotation of the grinding wheel 1 is equal to the radial distance between the grinding insert and the axis of rotation of the grinding wheel 1, ensuring that the second cutting insert 3 can contact the position on the grinding wheel 1 used for grinding the first cutting insert 2. When the grinding machine grinds the first cutting insert 2, the grinding wheel 1 simultaneously grinds both the second cutting insert 3 and the first cutting insert 2.

[0046] Furthermore, after the driving mechanism drives the grinding wheel 1 to move until the grinding surface 11 is in contact with both the first blade 2 and the second blade 3, the driving mechanism can drive the grinding wheel 1 to rotate. During the rotation of the grinding wheel 1, the position where the grinding wheel 1 contacts the first blade 2 can contact the second blade 3 to grind the second blade 3. Since the hardness of the second blade 3 is greater than that of the first blade 2, the second blade 3 can clean the position of the grinding wheel 1 that is in contact with the first blade 2.

[0047] It should be noted that in the above-mentioned Embodiment 1 and Embodiment 2, the clamping fixture used to fix the first blade 2 and the second blade 3 can be the existing clamping fixture used to clamp the blades in the grinding machine, and the connection method between the clamping fixture and the frame can also be the existing connection method between the clamping fixture and the frame in the grinding machine.

[0048] Optionally, in the above-described embodiments one and two, the grinding wheel 1 can be a resin-bonded diamond grinding wheel, a ceramic-bonded diamond grinding wheel, or a CBN grinding wheel (Cubic boron nitride), etc. The specific form of the grinding wheel 1 can be selected based on the material of the first cutting tool 2. For example, when the first cutting tool 2 is a PCBN cutting tool, the grinding wheel 1 can be a ceramic-bonded diamond grinding wheel; when the first cutting tool 2 is a cemented carbide cutting tool, the grinding wheel 1 can be a CBN grinding wheel.

[0049] Furthermore, the material of the second blade 3 can be selected based on the condition that its hardness is greater than that of the first blade 2. For example, when the first blade 2 is a PCBN blade, the second blade 3 is a PCD blade; when the first blade 2 is a cemented carbide blade, the second blade 3 is a PCBN blade; when the first blade 2 is a ceramic blade, the second blade 3 is a PCBN blade or a cemented carbide blade; when both the first blade 2 and the second blade 3 are PCBN blades, the CBN content in the first blade 2 is less than the CBN content in the second blade 3.

[0050] When the first insert 2 is a PCBN insert, the grinding wheel 1 should be a ceramic-bonded diamond grinding wheel, and the second insert 3 should be a PCD insert. The grinding wheel 1 can only grind 200 PCD inserts when grinding alone, and only 1300 PCBN inserts when grinding alone. When using the grinding machine of this invention, the grinding wheel 1 can grind 1250 PCBN inserts and 100 PCD inserts, thus improving the utilization rate of the grinding wheel 1.

[0051] When the grinding machine of this application is used, the grinding wheel 1 grinds the first cutting tool 2 while the second cutting tool 3 cleans the grinding wheel 1. Compared with using a white corundum cleaning wheel to clean the grinding wheel 1, the wear of the grinding wheel 1 is less, thereby reducing the cleaning cost of the grinding wheel 1.

[0052] According to another aspect of this application, a method for operating a grinding machine is provided, the method acting on the grinding machine, such as... Figure 3 As shown, the working method of the grinding machine includes:

[0053] S1. Based on the material of the first blade 2, select the second blade 3;

[0054] S2. Fix the first blade 2 and the second blade 3, and move the grinding wheel 1 so that when the grinding surface 11 contacts the first blade 2, the grinding surface 11 contacts the second blade 3.

[0055] S3. Set the feed speed and rotation speed of the grinding wheel 1, and control the grinding wheel 1 to grind the first blade 2 and the second blade 3.

[0056] By using the above-described grinding machine working method, the first blade 2 and the second blade 3 can be ground simultaneously, which allows the second blade 3 to clean the grinding wheel 1.

[0057] Furthermore, in step S1, the material of the second blade 3 is selected based on the premise that the hardness of the second blade 3 is greater than that of the first blade 2. For example, when the first blade 2 is a PCD blade, a PCBN blade is selected as the second blade 3; when the first blade 2 is a cemented carbide blade, a PCBN blade is selected as the second blade 3; when the first blade 2 is a ceramic blade, either a PCBN blade or a cemented carbide blade is selected as the second blade 3; when both the first blade 2 and the second blade 3 are PCBN blades, a PCBN blade with a lower CBN content is selected as the first blade 2, and a PCBN blade with a higher CBN content is selected as the second blade 3.

[0058] In addition, the material of the grinding wheel 1 can also be selected based on the material of the first blade 2 in step S1. For example, when the first blade 2 is a PCBN blade, the grinding wheel 1 can be a ceramic bonded diamond grinding wheel, and when the first blade 2 is a cemented carbide blade, the grinding wheel 1 can be a CBN grinding wheel.

[0059] In step S2, the fixing methods of the first blade 2 and the second blade 3 differ when using grinding machines from different embodiments. Specifically, when using the grinding wheel 1 in Embodiment 1, as follows: Figure 1 As shown, the first blade 2 and the second blade 3 are fixed by a clamping fixture. After fixing the first blade 2 and the second blade 3, it is necessary to ensure that when the grinding wheel 1 is in the first position, the first blade 2 and the grinding wheel 1 are arranged at intervals along a predetermined direction L, and the second blade 3 is in contact with the grinding surface 11. Furthermore, when the grinding wheel 1 is in the second position, both the first blade 2 and the second blade 3 are in contact with the grinding surface 11. When the grinding wheel 1 initially starts working, the grinding wheel 1 is in the first position. When using the grinding wheel 1 in Embodiment 2, as shown... Figure 2 As shown, the first blade 2 and the second blade 3 are fixed by two clamping fixtures respectively. After the first blade 2 and the second blade 3 are fixed, the second blade 3 needs to be able to contact the position of the grinding wheel 1 used for grinding the first blade 2.

[0060] In step S3, the feed rate and rotational speed of the grinding wheel 1 can be selected based on the grinding requirements of the first cutting tool 2.

[0061] In addition, when using the grinding machine in Embodiment 1, it is necessary to set the range of reciprocating movement of the grinding wheel 1 in the predetermined direction L to ensure that the grinding wheel 1 moves between the first position and the second position along the predetermined direction L.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding machine for machining a first cutting tool, characterized in that, The grinding machine includes a grinding wheel and a second cutting tool. The grinding wheel includes a grinding surface, and the hardness of the second cutting tool is greater than that of the first cutting tool. When the grinding surface contacts the first cutting tool, the grinding surface contacts the second cutting tool; The second cutting edge is disposed on one side of the first cutting edge in a predetermined direction. The grinding machine further includes a drive mechanism connected to the grinding wheel. The drive mechanism can drive the grinding wheel to rotate and move the grinding wheel between a first position and a second position along the predetermined direction. When the grinding wheel is in the first position, the first cutting edge and the grinding wheel are spaced apart along the predetermined direction, and the second cutting edge is in contact with the grinding surface. When the grinding wheel is in the second position, both the first cutting edge and the second cutting edge are in contact with the grinding surface. The grinding machine includes a frame and a clamping fixture. The clamping fixture is fixed on the frame, and both the second cutting edge and the first cutting edge are fixed on the clamping fixture. The second cutting edge and the first cutting edge are stacked along the predetermined direction. Alternatively, the grinding machine includes a frame, a drive mechanism, and two clamping fixtures. The two clamping fixtures are arranged at intervals along the circumference of the grinding wheel. Both clamping fixtures are mounted on the frame. The first cutting edge and the grinding wheel are respectively fixed on the two clamping fixtures. The drive mechanism can drive the grinding wheel to rotate. The grinding wheel has a rotation axis and rotates around the rotation axis. The distance between the first cutting edge and the rotation axis is equal to the distance between the second cutting edge and the rotation axis.

2. The grinding machine according to claim 1, characterized in that, The first blade is a PCBN blade, and the second blade is a PCD blade.

3. The grinding machine according to claim 1, characterized in that, The first blade is a cemented carbide blade, and the second blade is a PCBN blade.

4. The grinding machine according to claim 1, characterized in that, The first blade is a ceramic blade, and the second blade is a cemented carbide blade.

5. The grinding machine according to claim 1, characterized in that, Both the first blade and the second blade are PCBN blades, and the CBN content in the first blade is less than the CBN content in the second blade.

6. A method for operating a grinding machine, characterized in that, The working method of the grinding machine is applied to the grinding machine according to any one of claims 1-5, and the working method of the grinding machine includes: S1. Based on the material of the first blade, select the second blade; S2. Fix the first blade and the second blade, and move the grinding wheel so that when the grinding surface contacts the first blade, the grinding surface contacts the second blade; S3. Set the feed speed and rotation speed of the grinding wheel, and control the grinding wheel to grind the first blade and the second blade.

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