Ceramic grinding wheel for blade grinding and special fixing flange thereof

Abstract

The utility model discloses a kind of ceramic grinding wheel and its special fixing flange for blade grinding, and the both sides of the grinding wheel main body of ceramic grinding wheel are respectively equipped with multiple limit edge grooves of equidivided circumference distribution.Special fixing flange includes flange upper disc and flange lower disc, and inner ring and outer ring are slidably connected between, the bottom of inner ring is equipped with upper disc center cylinder, and upper disc center cylinder is equipped with external thread, the bottom of outer ring is equipped with upper disc limit edge pyramid, and at least two equidivided circumference distribution rotating stress holes are further equipped on inner ring, and flange lower disc includes lower disc baffle ring, the top of lower disc baffle ring is equipped with lower disc center cylinder, and lower disc center cylinder is hollowly arranged, and inner thread is equipped on hole inner wall, the inner diameter of lower disc center cylinder threaded section matches the outer diameter of upper disc center cylinder threaded section, and the top of lower disc baffle ring is further equipped with lower disc limit edge pyramid.The utility model has the advantages of reasonable structure, good stability, high grinding precision.

Description

Technical Field

[0001] This utility model belongs to the field of grinding wheels, specifically relating to a ceramic grinding wheel for blade grinding and its special fixing flange. Background Technology

[0002] Ceramic grinding wheels (ceramic bonded grinding wheels) are high-performance grinding tools widely used in various industrial fields, especially demonstrating unique advantages when processing high-hardness materials. These wheels play a vital role in industrial grinding, polishing, and lapping due to their high hardness, heat resistance, oil resistance, water resistance, acid and alkali resistance, as well as their good self-sharpening and dressability.

[0003] In existing ceramic grinding wheels, the wheel is directly fitted onto the rotating shaft of the grinding machine, and clamped and fixed on both sides with flanges. This fixing structure creates a risk of slippage between the grinding wheel and the flanges during grinding, resulting in poor stability and affecting grinding accuracy. Furthermore, this fixing method requires each bolt to be tightened sequentially with consistent torque to ensure even stress distribution on the flange. If the torque on any bolt is too high during tightening, it can cause localized stress concentration, making the grinding wheel prone to cracking at the stress concentration point. Utility Model Content

[0004] The purpose of this utility model is to provide a ceramic grinding wheel for blade grinding and its special fixing flange. It changes the traditional structure of fixing the grinding wheel flange with multiple bolts, which avoids the defect of local stress concentration causing the grinding wheel to burst. At the same time, the flange and the grinding wheel are limited by limiting cones and limiting grooves to prevent the grinding wheel from sliding between the grinding wheel and the flange, thereby improving the grinding accuracy.

[0005] This utility model is achieved through the following technical solution:

[0006] A ceramic grinding wheel for blade grinding includes a grinding wheel body and a grinding wheel center hole in the middle of the grinding wheel body. The grinding wheel is characterized by having multiple equally spaced circumferentially distributed limiting grooves on both sides of the grinding wheel, and the chambers of the limiting grooves are triangular pyramids or quadrangular pyramids.

[0007] The ceramic grinding wheel of this invention is clamped and fixed between flanges. The limiting grooves on both sides cooperate with the limiting pyramids of the flanges on the corresponding sides to limit the positioning of the ceramic grinding wheel and the flanges, thereby preventing the grinding wheel from sliding between the grinding wheel and the flanges and improving the grinding accuracy.

[0008] The limiting groove of this invention does not penetrate the grinding wheel body, thus having little impact on the strength of the grinding wheel.

[0009] Furthermore, the limiting grooves on both sides of the grinding wheel of this invention are preferably symmetrically distributed.

[0010] The limiting grooves on both sides of the grinding wheel of this invention can also be asymmetrically distributed.

[0011] Furthermore, the grinding wheel of this invention preferably has three limiting grooves on each side.

[0012] A special fixing flange for a ceramic grinding wheel used for blade grinding is characterized by comprising an upper flange plate and a lower flange plate. The upper flange plate consists of a concentric outer ring and an inner ring, which are slidably connected. The inner side of the inner ring has a protruding upper flange center cylinder, and the outer side of the upper flange center cylinder has external threads. The bottom of the outer ring has an upper flange limiting pyramid around the upper flange center cylinder. The number and position of the upper flange limiting pyramids correspond to the limiting grooves on the corresponding side of the grinding wheel body. The inner ring also has at least two circumferentially distributed rotational force-bearing holes. The lower flange plate includes a lower flange retaining ring. The inner side of the lower flange retaining ring has a protruding lower flange center cylinder. The lower flange center cylinder is hollow, and the inner wall of the hole has internal threads. The inner diameter of the threaded section of the lower flange center cylinder matches the outer diameter of the threaded section of the upper flange center cylinder. The top of the lower flange retaining ring also has a lower flange limiting pyramid around the lower flange center cylinder. The shape, number, and position of the lower flange limiting pyramids correspond to the limiting grooves on the corresponding side of the grinding wheel body.

[0013] That is, the upper plate limiting pyramid and the lower plate limiting pyramid of this utility model are triangular pyramids or quadrangular pyramids.

[0014] The principle of assembling the flange and ceramic grinding wheel in this utility model is as follows:

[0015] The upper and lower flange plates are located on both sides of the ceramic grinding wheel. First, insert the lower flange plate's center cylinder into the grinding wheel's center hole, so that its lower plate's limiting pyramid is inserted into the corresponding limiting groove of the ceramic grinding wheel on the side. Then, insert the upper flange plate's center cylinder into the grinding wheel's center hole and align it with the lower flange plate's center cylinder. Insert a tool into the rotating force hole of the inner ring, and rotate the inner ring to drive the upper flange plate's center cylinder to rotate, so that the upper and lower flange plate's center cylinders are threadedly connected until the upper and lower flange plates clamp the ceramic grinding wheel. During the above operation, rotate the outer ring so that its upper flange plate's limiting pyramid is inserted into the corresponding limiting groove of the ceramic grinding wheel on the side.

[0016] In this invention, the upper and lower flange plates are connected by threads of the upper and lower plate center cylinders, which clamp the ceramic grinding wheel. The ceramic grinding wheel is subjected to uniform force, and there will be no local stress concentration.

[0017] The ceramic grinding wheel is positioned relative to the upper and lower flange plates by limiting pyramids and grooves, preventing slippage between the ceramic grinding wheel and the flange and improving stability.

[0018] In actual manufacturing, due to limitations in machining accuracy and errors, the fit accuracy between the limiting pyramid and the limiting groove will decrease. To solve this problem:

[0019] Furthermore, the upper and lower limiting pyramids of this utility model are provided with limiting pyramid mounting threaded holes. The bottom of the upper and lower limiting pyramids is provided with T-shaped adjusting bolt holes. The adjusting bolt holes include head holes and screw through holes. Adjusting bolts are installed in the adjusting bolt holes. The head of the adjusting bolt is a flat cylindrical shape. The outer end of the screw of the adjusting bolt is a hollow structure with an internal hexagonal blind hole. The head of the adjusting bolt is installed in the head hole of the adjusting bolt hole. The screw passes through the screw through hole and is threadedly connected to the limiting pyramid mounting threaded hole.

[0020] With the above setup, after clamping the ceramic grinding wheel on the upper and lower flange plates, use an Allen wrench to insert it through the threaded hole of the limiting pyramid into the blind hole of the adjusting bolt. Rotating the adjusting bolt will adjust the limiting pyramid to move it forward and deeply insert it into the corresponding limiting groove. This ensures that the cone surface of the limiting pyramid fits as closely as possible to the groove surface of the limiting groove, improving the fit accuracy between the two, preventing slippage between the ceramic grinding wheel and the flange, and enhancing stability.

[0021] Furthermore, each of the upper and lower limiting pyramids of this utility model is provided with a square baffle groove on its cone surface. A baffle shaft is provided near the cone tip of the baffle groove, and a first spring connecting base is provided near the cone bottom of the baffle groove. A square baffle is provided inside the baffle groove. The front end of the baffle is fitted onto the baffle shaft, and a second spring connecting base is provided on the inner side of the rear end of the baffle. A spring is provided between the first spring connecting base and the second spring connecting base.

[0022] Due to the limitations of machining precision, even if the depth of the limiting pyramid inserted into the limiting groove is adjusted, there will still be a certain gap between the cone surfaces. In this invention, each limiting pyramid has a baffle on its cone surface. The baffle flips outward under the action of spring force. When the limiting pyramid is inserted into the corresponding limiting groove, the outward-flipped baffle will automatically stick to the inner wall of the limiting groove, filling the gap between the two, further improving the fitting precision and enhancing stability.

[0023] Furthermore, the rear end face of the baffle of this utility model is an arc surface.

[0024] When disassembling the flange and grinding wheel, the rear end of the baffle uses an arc surface to prevent it from getting stuck when the limiting pyramid separates from the limiting groove.

[0025] The inner and outer rings of the flange plate of this utility model are slidably connected, and the following two solutions are adopted:

[0026] Option 1)

[0027] The rotating mechanism between the inner and outer rings of this utility model is a bearing, which is installed between the inner and outer rings.

[0028] Option 2)

[0029] The rotating mechanism between the inner and outer rings of this utility model consists of a limiting ring groove and a limiting ring. The outer side of the inner ring is provided with a limiting ring groove with a T-shaped cross section, and the inner side of the outer ring is provided with a limiting ring with a T-shaped cross section. The limiting ring is inserted into the limiting ring groove to connect the inner and outer rings.

[0030] The sliding connection between the inner ring and the lower ring of the flange plate of this utility model is not limited to the above two solutions. Other solutions known in the prior art can be used to enable the inner ring to rotate relative to the outer ring.

[0031] This invention has the advantages of reasonable structure, good stability, and high grinding precision. Using this invention, the grinding wheel is firmly clamped between the flanges, ensuring uniform force distribution and preventing breakage due to localized stress concentration. The grinding wheel and flange are controlled by limiting pyramids and grooves, preventing slippage. This ensures stable grinding and improves grinding precision. Attached Figure Description

[0032] Figure 1 This is a three-dimensional exploded view of the ceramic grinding wheel and flange of this utility model during assembly;

[0033] Figure 2 This is a three-dimensional structural diagram of the ceramic grinding wheel of this utility model;

[0034] Figure 3 This is a three-dimensional structural diagram of the flange lower plate after removing the lower plate limiting pyramid.

[0035] Figure 4 This is a three-dimensional structural diagram of the inner ring of the flange plate of this utility model;

[0036] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the middle AA section;

[0037] Figure 6 This is a three-dimensional structural diagram of the outer ring of the flange plate of this utility model;

[0038] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure of the middle BB section;

[0039] Figure 8 This is a three-dimensional structural diagram of the lower plate limiting pyramid of this utility model;

[0040] Figure 9 This is a three-dimensional structural diagram of the lower plate limiting pyramid after removing the adjusting bolts, baffles, and springs.

[0041] Figure 10 This is a schematic diagram of the planar structure of the lower plate limiting pyramid of this utility model;

[0042] Figure 11 for Figure 10 Schematic diagram of the CC cross-section structure in the image;

[0043] Figure 12 This is a three-dimensional structural diagram of the baffle of the lower plate limiting pyramid of this utility model;

[0044] Figure 13 This is a three-dimensional structural diagram of the adjusting bolt of the lower plate limiting pyramid of the utility model.

[0045] As shown in the figure: 1. Ceramic grinding wheel; 2. Lower flange plate; 3. Upper flange plate; 11. Grinding wheel body; 12. Grinding wheel center hole; 13. Limiting groove; 21. Lower plate retaining ring; 22. Lower plate center cylinder; 23. Internal thread; 24. Limiting pyramid mounting threaded hole; 25. Lower plate limiting pyramid; 31. Inner ring; 32. Upper plate center cylinder; 33. External thread; 34. Limiting ring groove; 35. Rotational force-bearing hole; 36. Upper plate limiting pyramid; 37. Outer ring; 38. Limiting ring; 39. Limiting pyramid mounting threaded hole; 251. Adjusting bolt; 252. Spring; 253. Baffle; 254. 255. Adjusting bolt hole; 256. First spring connecting base; 257. Baffle groove; 258. Baffle shaft; 259. Second spring connecting base; 2501. Head; 2512. Screw; 2513. Internal hexagon blind hole; 2541. Head hole; 2542. Screw hole; 2531. Baffle shaft hole. Detailed Implementation

[0046] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to limit its scope of protection. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0047] like Figure 1 As shown: The upper flange 3 and the lower flange 2 are located on both sides of the ceramic grinding wheel 1. The inner sides of the upper flange 3 and the lower flange 2 are respectively provided with three upper flange limiting pyramids 25 and three lower flange limiting pyramids 36 that are equally divided into circles. The upper flange limiting pyramids 25 and the lower flange limiting pyramids 36 are both triangular pyramids.

[0048] like Figure 2As shown: The grinding wheel body 11 of the ceramic grinding wheel 1 is provided with a grinding wheel center hole 12, and three equally divided circumferentially distributed limiting grooves 13 are provided on both sides of the grinding wheel body 11. The chamber of the limiting groove 13 is a triangular pyramid.

[0049] like Figure 3 As shown: The flange lower plate 2 includes a lower plate retaining ring 21. The inner side of the lower plate retaining ring 21 (the side closer to the ceramic grinding wheel 1) is provided with a protruding lower plate central cylinder 22. The lower plate central cylinder 22 is hollow and the inner wall of the hole is provided with internal threads 23. Three lower plate limiting pyramids 36 are distributed around the lower plate central cylinder 22 in equal parts on the inner side of the lower plate retaining ring 21. The position of the lower plate limiting pyramids 36 corresponds to the limiting grooves 13 on the corresponding side of the grinding wheel body 11.

[0050] like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown: The flange upper plate 3 comprises a concentric outer ring 39 and an inner ring 31. The outer surface of the inner ring 31 is provided with a T-shaped limiting ring groove 34, and the inner surface of the outer ring 39 is provided with a T-shaped limiting ring 38. The limiting ring 38 is inserted into the limiting ring groove 34 to slide and connect the inner and outer rings, that is, the inner ring 31 and the outer ring 39 can rotate relative to each other. The inner side of the inner ring 31 (the side closer to the ceramic grinding wheel 1) is provided with a protruding upper plate center cylinder 32. The lower outer side of the disc center cylinder 32 is provided with an external thread 33. The inner diameter of the threaded section of the lower disc center cylinder 22 matches the outer diameter of the threaded section of the upper disc center cylinder 32. The bottom of the outer ring 39 is provided with three equally divided circumferentially distributed upper disc limiting pyramids 36 around the upper disc center cylinder 32. The positions of the three upper disc limiting pyramids 36 correspond to the three limiting grooves 13 on the corresponding side of the grinding wheel body 11. The inner ring 31 is also provided with two equally divided circumferentially distributed rotating force holes 35.

[0051] When the aforementioned limiting ring 38 and limiting ring groove 34 are assembled, the limiting ring groove 34 is initially a two-piece structure. First, the limiting ring 38 is inserted into one piece, and then the other piece is closed and connected into a whole structure by bolts or welding.

[0052] The upper plate limiting pyramid 25 and the lower plate limiting pyramid 36 have the same structure and are respectively installed on the inner side of the outer ring 39 and the lower plate retaining ring 21. Taking the upper plate limiting pyramid 25 as an example, its structure is explained in detail. Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13As shown: The bottom surface of the upper plate limiting pyramid 25 is provided with an adjusting bolt hole 254 with a T-shaped cross-section. The adjusting bolt hole 254 includes a head hole 2542 and a screw through hole 2541. An adjusting bolt 251 is installed in the adjusting bolt hole 254. The head 2511 of the adjusting bolt 251 is a flat cylindrical shape. The outer end of the screw 2512 of the adjusting bolt 251 is a hollow structure with an internal hexagonal blind hole 2513. The head 2511 of the adjusting bolt 251 is installed in the head hole 2542 of the adjusting bolt hole 254. The screw 2512 passes through the screw through hole 2541 and is connected to the limiting bolt on the outer ring 39. The upper plate limiting pyramid is threaded through the threaded hole 24. Each cone surface of the upper plate limiting pyramid is provided with a square baffle groove 256. A baffle shaft 257 is provided near the cone tip of the baffle groove 256. A first spring connecting base 255 is provided near the cone bottom of the baffle groove 256. A square baffle 253 is provided inside the baffle groove 256. The front end of the baffle 253 is fitted onto the baffle shaft 257. A second spring connecting base 258 is provided on the inner side of the rear end of the baffle 253. The rear end face of the baffle 253 is an arc surface. A spring 252 is provided between the first spring connecting base 255 and the second spring connecting base 258.

[0053] When the adjusting bolt 251 and adjusting bolt hole 254 are assembled, the upper plate limiting pyramid 25 is initially a split structure, with the upper part and the lower part of the pyramid separated from the head hole 2542. First, the screw of the adjusting bolt 251 is inserted into the lower part of the upper plate pyramid, and then the lower part and the upper part of the pyramid are connected into a whole structure by bolts or welding.

[0054] When assembling the ceramic grinding wheel 1 and flange of this utility model, first insert the lower plate center cylinder 22 of the flange lower plate 2 into the grinding wheel center hole 12 of the ceramic grinding wheel 1, so that its three lower plate limiting pyramids 25 are inserted into the three limiting grooves 13 of the ceramic grinding wheel 1 on the corresponding side. Align the upper plate center cylinder 32 of the flange upper plate 3 with the lower plate center cylinder 22, and insert a tool into the two rotation force holes 35 of the inner ring 31. Rotate the inner ring 31 to drive the upper plate center cylinder 32 to rotate, so that the upper plate center cylinder 32 and the lower plate center cylinder 22 are threadedly connected. During the rotation, rotate the outer ring 39 so that its three upper plate limiting pyramids 36 are inserted into the three limiting grooves 13 of the ceramic grinding wheel 1 on the corresponding side. Rotate the inner ring 31 until the flange upper plate 3 and the flange lower plate 22 are connected. The ceramic grinding wheel 1 is clamped in disc 2. Then, using an Allen wrench, the wrench is inserted through the threaded holes 24 of the limiting pyramids on the upper disc 3 and the lower disc 2 of the flange into the blind holes 2513 of the adjusting bolt 251. By rotating the adjusting bolt 251, the corresponding limiting pyramid is adjusted to move forward and deeply insert into the corresponding limiting groove 13. This ensures that the cone surface of the limiting pyramid fits as closely as possible to the groove surface of the limiting groove 13. Under the elastic force of the spring 252, the baffle 253 on the cone surface of each limiting pyramid flips outward. The outwardly flipped baffle 253 automatically fits against the inner wall of the limiting groove 13, filling the gap between them. This improves the fitting accuracy between the limiting pyramid and the limiting groove 13 and enhances the stability of the ceramic grinding wheel during grinding.

[0055] This utility model is not limited to the above embodiments. For example, a bearing can be used to achieve a sliding connection between the inner ring and the outer ring, and the bearing is installed between the inner ring and the outer ring.

[0056] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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. Such 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 this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A ceramic grinding wheel for blade grinding, comprising a grinding wheel body and a grinding wheel center hole in the middle of the grinding wheel body, characterized in that... The grinding wheel body has multiple equally spaced circumferentially distributed limiting grooves on both sides, and the chambers of the limiting grooves are triangular or quadrangular pyramidal.

2. The ceramic grinding wheel for blade grinding according to claim 1, characterized in that... The limiting grooves on both sides of the grinding wheel are symmetrically distributed.

3. The ceramic grinding wheel for blade grinding according to claim 1, characterized in that... Three limiting grooves are provided on each side of the grinding wheel.

4. A special fixing flange for ceramic grinding wheels for blade grinding according to claim 1, characterized in that... The flange includes an upper flange and a lower flange. The upper flange consists of a concentric outer ring and an inner ring, which are slidably connected. The inner side of the inner ring has a protruding upper flange center cylinder, and the outer side of the upper flange center cylinder has external threads. The bottom of the outer ring has an upper flange limiting pyramid around the upper flange center cylinder. The number and position of the upper flange limiting pyramids correspond to the limiting grooves on the corresponding side of the grinding wheel body. The inner ring also has at least two circumferentially distributed rotating force holes. The lower flange includes a lower flange retaining ring. The inner side of the lower flange retaining ring has a protruding lower flange center cylinder. The lower flange center cylinder is hollow, and the inner wall of the hole has internal threads. The inner diameter of the threaded section of the lower flange center cylinder matches the outer diameter of the threaded section of the upper flange center cylinder. The top of the lower flange retaining ring also has a lower flange limiting pyramid around the lower flange center cylinder. The shape, number, and position of the lower flange limiting pyramids correspond to the limiting grooves on the corresponding side of the grinding wheel body.

5. A special fixing flange for ceramic grinding wheels used in blade grinding according to claim 4, characterized in that... The upper and lower limiting pyramids are provided with limiting pyramid mounting threaded holes. The bottom of the upper and lower limiting pyramids is provided with T-shaped adjusting bolt holes. The adjusting bolt holes include head holes and screw through holes. Adjusting bolts are installed in the adjusting bolt holes. The head of the adjusting bolt is a flat cylindrical shape. The outer end of the adjusting bolt is a hollow structure with an internal hexagon blind hole. The head of the adjusting bolt is installed in the head hole of the adjusting bolt hole. The screw passes through the screw through hole and is threadedly connected to the limiting pyramid mounting threaded hole.

6. A special fixing flange for ceramic grinding wheels used in blade grinding according to claim 4 or 5, characterized in that... Each of the upper and lower limiting pyramids has a square baffle groove on its cone surface. A baffle shaft is provided near the cone tip of the baffle groove. A first spring connecting base is provided near the cone bottom of the baffle groove. A square baffle is provided inside the baffle groove. The front end of the baffle is fitted onto the baffle shaft. A second spring connecting base is provided on the inner side of the rear end of the baffle. A spring is provided between the first spring connecting base and the second spring connecting base.

7. A special fixing flange for ceramic grinding wheels used in blade grinding according to claim 4 or 5, characterized in that... The rear end face of the baffle is a circular arc surface.

8. A special fixing flange for ceramic grinding wheels used in blade grinding according to claim 4, characterized in that... The rotating mechanism between the inner and outer rings is a bearing, which is installed between the inner and outer rings.

9. A special fixing flange for ceramic grinding wheels used in blade grinding according to claim 4, characterized in that... The rotation mechanism between the inner ring and the outer ring consists of a limiting ring groove and a limiting ring. The outer side of the inner ring is provided with a limiting ring groove with a T-shaped cross section, and the inner side of the outer ring is provided with a limiting ring with a T-shaped cross section. The limiting ring is inserted into the limiting ring groove to connect the inner ring and the outer ring.

Images