Online electrolytic dressing device for grinding wheel

Abstract

The invention relates to the technical field of online grinding wheel repairing, in particular to an online grinding wheel electrolytic dressing device which comprises an arc-shaped cover plate. The arc-shaped cover plate is installed on a rack of an external grinding wheel polisher, a grinding wheel shaft of the grinding wheel polisher is electrically connected with an anode electric brush, arc-shaped grooves are formed in the front end and the rear end of the outer side face of the arc-shaped cover plate, and arc-shaped sliding blocks are slidably connected to the inner side faces of the arc-shaped grooves. A liquid inlet nozzle is mounted on the first sealing box body, and a cathode binding post is mounted on the liquid inlet nozzle; according to the online electrolytic dressing device for the grinding wheel, a grinding layer on the outer surface of the grinding wheel can be repaired online, so that the grinding wheel is always in an optimal working state, the grinding machining quality of a workpiece is effectively guaranteed, and meanwhile, the electrolytic dressing efficiency can be adaptively adjusted according to the rotating speed of the grinding wheel, so that the grinding wheel is always in the optimal working state; the arc-shaped cover plate is used for preventing grinding fluid from splashing, and the grinding fluid is sprayed to the metal bond grinding wheel rotating at a high speed through the liquid inlet nozzle.

Description

Technical Field

[0001] The present application relates to the technical field of grinding wheel online repair, and in particular to an online electrolytic sharpening device for grinding wheels. Background Art

[0002] Grinding machines play an important role in many aspects of bearing processing. From rough machining to fine machining and finally super finishing, grinding wheels are needed to remove excess material and improve surface quality.

[0003] When grinding bearings, the abrasive grains on the surface of the grinding wheel will gradually become blunt, resulting in increased friction and temperature, which may cause chatter or burns, seriously affecting the surface quality and processing accuracy of the workpiece. In order to maintain the best working condition of the grinding wheel (that is, the correct shape and sharpness), it must be dressed regularly. Dressing includes two main steps: shaping and sharpening.

[0004] Shaping: Adjust the working surface of the grinding wheel to the required geometric accuracy through micro-grinding, and slightly break the tip of the abrasive grain to form a new sharp edge.

[0005] Dressing: Removing part of the bond material (reducing its height) so that the abrasive grain protrudes above the bond, thereby creating an effective grinding edge and sufficient space to accommodate the chips.

[0006] For grinding wheels made of ordinary materials, these two processes can be completed at the same time; but for grinding wheels made of superhard materials, they usually need to be performed separately. Traditional grinding wheel dressing methods such as turning, rolling and grinding have problems such as low efficiency, insufficient precision, severe tool wear, etc. when applied to superhard materials, and it is difficult to achieve automatic control. To overcome these limitations, researchers have developed online electrolytic sharpening technology (ELID) as one of the solutions. This technology uses the dissolution reaction of metal binders in a specific electrolyte under the action of power to achieve the purpose of removal, so that the abrasive particles inside the grinding wheel can be exposed to form an ideal grinding angle and chip clearance. In addition, as the oxide layer that is continuously formed during use is continuously worn away, the entire process is in a dynamic equilibrium state, which not only prevents the premature failure of the grinding wheel but also ensures good grinding performance. Compared with traditional methods, this method has higher dressing efficiency, simpler operation process and better quality effect.

[0007] During high-speed grinding, the rapid rotation of the grinding wheel will form a layer of airflow barrier in the circumferential direction that flows at high speed in the direction of rotation. The speed and pressure of this airflow barrier increase with the increase of the grinding wheel speed, which in turn hinders the grinding fluid flowing out of the cathode from filling into the inter-electrode gap, making it difficult for the grinding fluid to fully contact the grinding wheel surface. At this time, a state similar to "vacuum" is formed in the inter-electrode gap, which directly affects the effect of electrolytic sharpening of the grinding wheel. At the same time, the existing ELID device has poor adjustability, and the electrolytic sharpening efficiency of the grinding wheel always remains constant. When the grinding wheel rotates at high speed for a long time, if the electrolytic sharpening efficiency remains unchanged, the contact time between the metal binder on the outer surface of the grinding wheel and the electrolyte will become shorter, resulting in low electrolytic efficiency, which in turn affects the sharpening efficiency of the grinding wheel. Summary of the invention

[0008] The present application provides an online electrolytic sharpening device for a grinding wheel, which can perform online repair on the grinding layer on the outer surface of the grinding wheel, so that the grinding wheel is always in the best working state, effectively ensuring the grinding processing quality of the workpiece. At the same time, the efficiency of the electrolytic sharpening can be adaptively adjusted according to the rotation speed of the grinding wheel, so that the grinding wheel is always in the best working state, which can effectively solve the problems in the background technology.

[0009] To achieve the above-mentioned objectives, the present application provides the following technical solutions: an online electrolytic sharpening device for a grinding wheel, comprising an arc-shaped cover plate; the arc-shaped cover plate is installed on the frame of an external grinding wheel grinder, the grinding wheel shaft of the grinding wheel grinder is electrically connected to the anode brush, arc-shaped grooves are provided at both front and rear ends of the outer side surface of the arc-shaped cover plate, an arc-shaped slider is slidably connected to the inner side surface of the arc-shaped groove, a sealing box body is provided in the middle of the upper surface of the arc-shaped cover plate, a liquid inlet nozzle is installed on the sealing box body, and a cathode terminal is installed on the liquid inlet nozzle.

[0010] The upper left and right sides of the outer side of the arc-shaped cover plate are both equipped with a sealed box body 2, the inner side of the sealed box body 2 is slidably connected with a baffle, the arc-shaped slider contacts the outer side of the baffle, and the upper surface of the sealed box body 2 is equipped with an adjustment mechanism for controlling the lifting and lowering of the baffle.

[0011] Preferably, the cross section of the arc-shaped cover plate is U-shaped.

[0012] Preferably, brackets are provided on both the front and rear sides of the lower end of the outer side surface of the arc-shaped cover plate, a bearing sleeve is installed on the lower end of the outer side surface of the bracket, the bearing sleeve is rotatably connected to the grinding wheel shaft of the grinding machine through a bearing, and an anode brush is arranged inside the bearing sleeve.

[0013] Preferably, a mounting seat is provided at the lower end of the outer side surface of the bracket, and the mounting seat is fixed to the outer shell of the grinding wheel grinder by bolts.

[0014] Preferably, the arc groove is covered with a sealing cover plate, which is fixed to the arc cover plate by bolts, and at least one positioning stud is installed on the outer side of the arc slider, which is fixed to the sealing cover plate by nuts.

[0015] Preferably, a guide groove is provided on the outer side surface of the arc-shaped slider away from the sealing cover plate, and the guide groove is arranged along the curvature direction of the arc-shaped slider.

[0016] Preferably, the cathode terminal is electrically connected to the negative electrode of the external power supply, and the cathode terminal is in contact with the grinding fluid inside the liquid inlet nozzle.

[0017] Preferably, after the grinding wheel is installed, the arc-shaped sliding block is arranged close to the outer side surface of the grinding wheel, and the arc-shaped sliding block is not in direct contact with the grinding wheel.

[0018] Preferably, the positioning mechanism includes an end cover, which is fixed to the sealing box body 2 by bolts, and a sleeve is installed on the outer side of the end cover, and the sleeve is threadedly connected to a headed stud through a threaded hole arranged on the outer side of the sleeve, and the inner side of the sleeve is slidably connected to a hollow rod, and the end of the headed stud is tightly pressed against the outer side of the hollow rod, and one end of the hollow rod is fixedly connected to the baffle.

[0019] Preferably, a positioning rod is sleeved inside the hollow rod, the lower end of the positioning rod passes through a through hole provided on the baffle, an ear plate is provided on the upper end of the outer side of the hollow rod, and the outer side surface of the positioning rod is connected to the inner side surface of the hollow rod through a spring.

[0020] Compared with the prior art, the beneficial effects of this application are: 1. This grinding wheel online electrolytic sharpening device can repair the grinding layer on the outer surface of the grinding wheel online, so that the grinding wheel is always in the best working state, effectively ensuring the grinding quality of the workpiece. At the same time, the efficiency of electrolytic sharpening can be adaptively adjusted according to the rotation speed of the grinding wheel, so that the grinding wheel is always in the best working state; 2. The arc-shaped cover plate is used to prevent the splash of the grinding fluid. The grinding fluid is sprayed onto the high-speed rotating metal-bonded grinding wheel through the liquid inlet nozzle. The metal-bonded grinding wheel is connected to the positive electrode of the external power supply through the anode brush, and the cathode terminal is electrically connected to the negative electrode of the power supply. The electrolytic grinding fluid sprayed from the liquid inlet nozzle enters the gap between the cathode terminal and the surface of the grinding wheel. Under the operation of the external power supply, the anode dissolution effect in the electrolysis process is used to electrolyze and remove the metal binder on the surface of the grinding wheel. Since the abrasive grains buried in the surface of the grinding wheel will not be electrolyzed, the abrasive grains will gradually expose the surface of the grinding wheel, thereby forming a sharpening effect on the grinding wheel; 3. During the electrolytic sharpening process, an insulating oxide film will be formed on the surface of the grinding wheel; the thickness of the oxide film directly affects the conductivity, which can slow down or even prevent the further electrolysis of the metal binder of the grinding wheel, thereby reducing the electrolysis speed and avoiding excessive wear of the grinding wheel. As the grinding process proceeds, when the abrasive grains on the surface of the grinding wheel are worn, the height of the abrasive grains will decrease; at this time, due to the scratching effect of the workpiece material, the oxide film will gradually become thinner, and the conductivity will be restored, resulting in the acceleration of the electrolysis process of the metal binder; this prompts the electrolysis process on the surface of the grinding wheel to continue, and the height of the abrasive grains will increase accordingly, and then the oxide film begins to thicken again, and so on, forming a cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an illustration of the structure of this application Figure 1 ; Figure 2 This is an illustration of the structure of this application Figure 2 ; Figure 3 This is the main view of this application; Figure 4 for Figure 3 A partial enlarged schematic diagram in the middle; Figure 5 It is a structural schematic diagram of the arc slider.

[0022] In the figure: 1 sealing box body 1, 2 liquid inlet nozzle, 3 arc-shaped cover plate, 4 adjustment mechanism, 41 headed stud, 42 spring, 43 positioning plug rod, 44 ear plate, 45 sleeve, 46 end cover, 47 hollow rod, 5 sealing box body 2, 6 sealing cover plate, 7 positioning stud, 8 bracket, 9 anode brush, 10 mounting seat, 11 baffle, 12 cathode terminal, 13 arc-shaped slider. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] In the description of this application, if the orientation description is involved, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the attached Figure 3The orientation or position relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. When a feature is referred to as being "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0025] See also Figure 1-5 The present application provides the following technical solutions: an online electrolytic sharpening device for a grinding wheel, comprising an arc-shaped cover plate 3; the arc-shaped cover plate 3 is installed on the frame of an external grinding wheel grinder, the grinding wheel shaft of the grinding wheel grinder is electrically connected to the anode brush 9, arc-shaped grooves are provided at both the front and rear ends of the outer side surface of the arc-shaped cover plate 3, an arc-shaped slider 13 is slidably connected to the inner side surface of the arc-shaped groove, a sealing box body 1 is provided in the middle of the upper surface of the arc-shaped cover plate 3, a liquid inlet nozzle 2 is installed on the sealing box body 1, and a cathode terminal 12 is installed on the liquid inlet nozzle 2.

[0026] Specifically, the arc-shaped cover plate 3 is used to prevent the splashing of the grinding fluid. The grinding fluid is sprayed onto the high-speed rotating metal-bonded grinding wheel through the liquid inlet nozzle 2. The metal-bonded grinding wheel is connected to the positive electrode of the external power supply through the anode brush 9. The cathode terminal 12 is electrically connected to the negative electrode of the power supply. The electrolytic grinding fluid sprayed from the liquid inlet nozzle 2 enters the gap between the cathode terminal 12 and the surface of the grinding wheel. Under the operation of the external power supply, the anode dissolution effect in the electrolysis process is utilized to electrolyze and remove the metal binder on the surface of the grinding wheel. Since the abrasive grains buried in the surface of the grinding wheel will not be electrolyzed, the abrasive grains will gradually expose the surface of the grinding wheel, thereby forming a sharpening effect on the grinding wheel.

[0027] More specifically, during the electrolytic sharpening process, the anode reaction principle causes the surface binder metal of the grinding wheel, which serves as the anode, to be electrolyzed, forming electrolytic ions that dissolve into the grinding fluid. This process causes the abrasive grains on the surface of the grinding wheel to protrude, while forming an insulating oxide film on the surface of the grinding wheel. The thickness of the oxide film directly affects the conductivity, which can slow down or even prevent the further electrolysis of the grinding wheel metal binder, thereby reducing the electrolysis speed and avoiding excessive wear of the grinding wheel.

[0028] As the grinding process progresses, when the abrasive grains on the grinding wheel surface are worn, the height of the abrasive grains will decrease. At this time, due to the scraping effect of the workpiece material, the oxide film will gradually become thinner, and the conductivity will be restored, resulting in the acceleration of the electrolysis process of the metal binder. This prompts the electrolysis process on the grinding wheel surface to continue, and the height of the abrasive grains will increase accordingly, and then the oxide film will begin to thicken again. This cycle repeats itself.

[0029] A sealing box body 5 is installed on both sides of the upper end of the outer side of the arc cover plate 3, and a baffle 11 is slidably connected to the inner side of the sealing box body 5. The arc slider 13 contacts the outer side of the baffle 11, and a positioning mechanism 4 for controlling the lifting and lowering of the baffle 11 is installed on the upper surface of the sealing box body 5.

[0030] Specifically, the baffle 11 can be raised and lowered by the positioning mechanism 4. When the grinding wheel is worn, the height of the baffle 11 is adjusted downward accordingly so that the height between the lower surface of the baffle 11 and the outer surface of the grinding wheel remains unchanged.

[0031] More specifically, the two baffles 11 and the two arc-shaped sliders 13 are arranged close to the outer surface of the grinding wheel. Therefore, after the grinding fluid is sprayed, a part of the grinding fluid will be discharged through the gap between the baffle 11 and the arc-shaped slider 13 and the grinding wheel. The discharged grinding fluid is used to cool the grinding process, and the other part of the grinding fluid gathers on both sides of the inner side of the arc-shaped cover plate 3 to form a liquid pool. The grinding layer of the grinding wheel is immersed in the liquid pool, which is beneficial to the electrolysis of the surface layer of the grinding wheel.

[0032] Furthermore, the cross section of the arc-shaped cover plate 3 is U-shaped.

[0033] Specifically, the U-shaped cross section can prevent the grinding fluid from splashing and can also allow the grinding fluid to gather inside the arc-shaped cover plate 3, thereby facilitating the electrolysis.

[0034] Furthermore, brackets 8 are provided on both the front and rear sides of the lower end of the outer side surface of the arc-shaped cover plate 3, and a bearing sleeve is installed on the lower end of the outer side surface of the bracket 8. The bearing sleeve is rotatably connected to the grinding wheel shaft of the grinding machine through a bearing, and an anode brush 9 is arranged inside the bearing sleeve.

[0035] Specifically, the anode brush 9 is electrically connected to the grinding wheel.

[0036] Furthermore, a mounting seat 10 is provided at the lower end of the outer side surface of the bracket 8, and the mounting seat 10 is fixed to the outer shell of the grinding wheel grinder by bolts.

[0037] Specifically, the mounting seat 10 is used to fix the bracket 8 .

[0038] Furthermore, the arc groove is covered with a sealing cover plate 6, which is fixed to the arc cover plate 3 by bolts. The outer side of the arc slider 13 is equipped with at least one positioning stud 7, which is fixed to the sealing cover plate 6 by nuts.

[0039] Specifically, the sealing cover plate 6 is used to prevent liquid from overflowing from the arc-shaped groove, and the positioning stud 7 is arranged through a through hole arranged on the sealing cover plate 6 .

[0040] Furthermore, a guide groove is provided on the outer side surface of the arc-shaped slider 13 away from the sealing cover plate 6 , and the guide groove is provided along the curvature direction of the arc-shaped slider 13 .

[0041] Specifically, the guide grooves provided on the outer surface of the sealing cover plate 6 are used to collect the grinding fluid to the two sides of the arc-shaped cover plate 3 .

[0042] Furthermore, the cathode terminal 12 is electrically connected to the negative electrode of the external power source, and the cathode terminal 12 is in contact with the grinding fluid inside the liquid inlet nozzle 2 .

[0043] Specifically, the cathode terminal 12 is inserted into the liquid inlet nozzle 2 .

[0044] Furthermore, after the grinding wheel is installed, the arc-shaped sliding block 13 is arranged close to the outer side surface of the grinding wheel, and the arc-shaped sliding block 13 is not in direct contact with the grinding wheel.

[0045] Specifically, the presence of the arc-shaped slider 13 allows part of the cutting fluid to always be in contact with the outer surface of the grinding wheel, thereby ensuring the normal electrolytic sharpening.

[0046] Furthermore, the positioning mechanism 4 includes an end cover 46, which is fixed to the sealing box body 5 by bolts. A sleeve 45 is installed on the outer side of the end cover 46. The sleeve 45 is threadedly connected to a headed stud 41 through a threaded hole set on its outer side. The inner side of the sleeve 45 is slidably connected to a hollow rod 47. The end of the headed stud 41 is tightly pressed against the outer side of the hollow rod 47, and one end of the hollow rod 47 is fixedly connected to the baffle 11.

[0047] Specifically, the head stud 41 is loosened, and the lifting and lowering of the baffle 11 can be adjusted through the hollow rod 47, so that the baffle 11 is close to the outer surface of the grinding wheel, which can effectively ensure the collection of the grinding fluid. When fixing the position of the baffle 11, it is only necessary to lock the head stud 41.

[0048] Furthermore, a positioning rod 43 is sleeved inside the hollow rod 47, and the lower end of the positioning rod 43 is arranged through a through hole set on the baffle 11. An ear plate 44 is provided on the upper end of the outer surface of the hollow rod 47, and the outer side surface of the positioning rod 43 is connected to the inner side surface of the hollow rod 47 through a spring 42.

[0049] Specifically, when adjusting the position of the baffle 11, the positioning rod 43 is pressed down so that the positioning rod 43 reaches the maximum stroke. At this time, the spring 42 is compressed, the head stud 41 is loosened, and the ear plate 44 is held to push the hollow rod 47 downward until the end of the positioning rod 43 contacts the outer surface of the grinding wheel, locking the head stud 41 so that the end of the head stud 41 is tightly pressed against the outer surface of the hollow rod 47, thereby fixing the position of the hollow rod 47, loosening the positioning rod 43, and the spring 42 pushes the positioning rod 43 to reset. At this time, the distance between the baffle 11 and the grinding wheel is the optimal value.

[0050] During use: the anode brush 9 is sleeved on the grinding wheel shaft, and the mounting base 10 is installed on the equipment housing. The positions of the two baffles 11 and the two arc-shaped sliders 13 are adjusted to the best, so that the distance between the baffles 11 and the arc-shaped sliders 13 and the grinding wheel is 2-4 mm. When the grinding wheel rotates at high speed, the grinding fluid is sprayed onto the outer surface of the grinding wheel through the liquid inlet nozzle 2. The sprayed grinding fluid is gathered on both sides of the inner part of the arc-shaped cover plate 3 through the guidance of the arc-shaped cover plate 3 and the arc-shaped sliders 13, so that a liquid pool is formed on the left and right sides of the arc-shaped cover plate 3.

[0051] At this time, the working surface of the grinding wheel is immersed in the liquid pool to achieve electrolytic sharpening. When the grinding wheel rotates, part of the grinding fluid will be brought out, thereby playing a role in grinding and cooling.

[0052] The external sensor detects the rotation speed of the grinding wheel shaft. When the rotation speed of the grinding wheel increases, the contact time between the grinding wheel surface and the liquid pool becomes shorter. At this time, it is necessary to increase the contact area between the liquid pool and the grinding wheel. By increasing the injection speed of the grinding fluid, the injection speed of the grinding fluid is achieved by increasing the jet speed of the liquid out of the liquid inlet nozzle 2. Specifically, a flow control valve is installed on the liquid inlet nozzle 2. The flow control valve is an electrically controlled valve until the interior of the arc cover plate 3 is completely filled with grinding fluid. At this time, the electrolytic sharpening efficiency is the highest.

[0053] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An on-line electrolytic sharpening device for a grinding wheel, characterized in that: The arc-shaped cover plate (3) comprises an arc-shaped cover plate (3); the arc-shaped cover plate (3) is installed on the frame of an external grinding wheel grinder, the grinding wheel shaft of the grinding wheel grinder is electrically connected to the anode brush (9), the outer side surface of the arc-shaped cover plate (3) is provided with arc-shaped grooves at both the front and rear ends, the inner side surface of the arc-shaped groove is slidably connected with an arc-shaped slider (13), a sealing box body (1) is provided in the middle of the upper surface of the arc-shaped cover plate (3), a liquid inlet nozzle (2) is installed on the sealing box body (1), and a cathode terminal (12) is installed on the liquid inlet nozzle (2); The upper left and right sides of the outer side surface of the arc-shaped cover plate (3) are both provided with a sealing box body (5), the inner side surface of the sealing box body (5) is slidably connected with a baffle (11), the arc-shaped slider (13) is in contact with the outer side surface of the baffle (11), and the upper surface of the sealing box body (5) is provided with a positioning mechanism (4) for controlling the lifting and lowering of the baffle (11).

2. The on-line electrolytic sharpening device for grinding wheels according to claim 1, characterized in that: The cross section of the arc-shaped cover plate (3) is U-shaped.

3. The on-line electrolytic sharpening device for grinding wheels according to claim 1, characterized in that: Brackets (8) are provided at both the front and rear sides of the lower end of the outer side surface of the arc-shaped cover plate (3), and a bearing sleeve is installed at the lower end of the outer side surface of the bracket (8). The bearing sleeve is rotatably connected to the grinding wheel shaft of the grinding machine through a bearing, and an anode brush (9) is arranged inside the bearing sleeve.

4. The on-line electrolytic sharpening device for grinding wheels according to claim 3, characterized in that: A mounting seat (10) is provided at the lower end of the outer side surface of the bracket (8), and the mounting seat (10) is fixed to the outer housing of the grinding wheel grinder by means of bolts.

5. The on-line electrolytic sharpening device for grinding wheels according to claim 1, characterized in that: The arc groove is covered with a sealing cover plate (6), which is fixed to the arc cover plate (3) by bolts. The outer side of the arc slider (13) is equipped with at least one positioning stud (7), which is fixed to the sealing cover plate (6) by nuts.

6. The on-line electrolytic sharpening device for grinding wheels according to claim 5, characterized in that: A guide groove is provided on the outer side surface of the arc-shaped sliding block (13) away from the sealing cover plate (6), and the guide groove is arranged along the curvature direction of the arc-shaped sliding block (13).

7. The on-line electrolytic sharpening device for grinding wheels according to claim 1, characterized in that: The cathode terminal (12) is electrically connected to the negative electrode of an external power source, and the cathode terminal (12) is in contact with the grinding fluid inside the fluid inlet nozzle (2).

8. The on-line electrolytic sharpening device for grinding wheels according to claim 1, characterized in that: After the grinding wheel is installed, the arc-shaped slide block (13) is arranged close to the outer side surface of the grinding wheel, and the arc-shaped slide block (13) does not directly contact the grinding wheel.

9. The on-line electrolytic sharpening device for grinding wheels according to claim 1, characterized in that: The positioning mechanism (4) comprises an end cover (46) which is fixed to the second sealing box body (5) by means of bolts. A sleeve (45) is mounted on the outer side of the end cover (46). The sleeve (45) is threadedly connected to a headed stud (41) through a threaded hole provided on the outer side of the sleeve (45). A hollow rod (47) is slidably connected to the inner side of the sleeve (45). The end of the headed stud (41) is tightly pressed against the outer side of the hollow rod (47). One end of the hollow rod (47) is fixedly connected to the baffle (11).

10. The on-line electrolytic sharpening device for grinding wheels according to claim 9, characterized in that: A positioning rod (43) is sleeved inside the hollow rod (47), the lower end of the positioning rod (43) passes through a through hole provided on the baffle (11), an ear plate (44) is provided at the upper end of the outer side surface of the hollow rod (47), and the outer side surface of the positioning rod (43) is connected to the inner side surface of the hollow rod (47) via a spring (42).

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