Tooth grinding wheel for machining broken teeth and tooth grinding module applying tooth grinding wheel

Abstract

The utility model discloses a tooth grinding wheel for machining broken teeth and a tooth grinding module applying the tooth grinding wheel. The tooth grinding wheel comprises a cylindrical body, first single-face grinding teeth and second single-face grinding teeth. The middle of the cylindrical body is fixedly connected with a rotating shaft, the first single-face grinding tooth is provided with a right grinding face and a left suspension face, the second single-face grinding tooth is provided with a left grinding face and a right suspension face, the left grinding face is integrally connected to the right side of the right grinding face, and the axial distance between the left grinding face and the right grinding face is at least two times of the pitch of a to-be-ground piece; when a to-be-ground piece is machined, the left suspension face and the right suspension face do not make contact with the to-be-ground piece, the right grinding face machines a left tooth mountain of front teeth of the to-be-ground piece, the left grinding face machines a right tooth mountain of rear teeth of the to-be-ground piece in a tooth jumping mode, and the grinding starting point of the left tooth mountain is earlier than that of the right tooth mountain all the time. The tool has the advantages of being high in universality, high in grinding efficiency and suitable for machining a to-be-ground piece with a cylindrical blade on the left side tooth mountain and without a cylindrical blade on the right side tooth mountain, and the service life of the to-be-ground piece is long.

Description

Technical Field

[0001] This utility model relates to the field of machining tool grinding, and in particular to a grinding wheel for skipped teeth machining and a grinding module using the same. Background Technology

[0002] In the machining industry, taps and similar tools are commonly used to process workpieces. Tap processing involves a grinding process. Current grinding tools are of single-tooth single-line or single-tooth multi-line structure. During grinding, the height of the left and right teeth is consistent along the axial direction. The left and right halves of a tooth simultaneously contact and grind the right tooth of the left side and the right tooth of the left side. The disadvantages are: firstly, single-tooth single-line grinding tools do not have a fixed pitch and can grind taps of various pitches, making them highly versatile, but with low production efficiency; secondly, single-tooth multi-line grinding tools are highly efficient, but one specification can only process taps of the corresponding pitch. Firstly, taps have poor versatility. Secondly, for certain cutting tools where the starting points of the left and right halves of the tap are different, the left side of the tap will experience greater force than the right side. Therefore, the left side is required to have a certain cylindrical cutting edge, while the right side experiences less force and should ideally have no cylindrical cutting edge. In this case, a single-tooth grinding method is used, which often results in the right half of the tap contacting first and the left half contacting later. When the left half of the tap has a cylindrical cutting edge, the right half of the tap will definitely have a cylindrical cutting edge, and the width of the cylindrical cutting edge is larger than that of the left side. When the width of the cylindrical cutting edge is large, it increases the cutting resistance of the tap and makes it easy to break. Utility Model Content

[0003] To address one or more of the aforementioned problems, this utility model provides a tooth grinding wheel for skipped tooth processing and a tooth grinding module using the same.

[0004] According to one aspect of the present invention, a tooth grinding wheel for skipped tooth processing includes: a cylindrical body, a first single-sided grinding tooth, and a second single-sided grinding tooth;

[0005] The cylindrical body has a central shaft hole in the middle for fixed connection of the rotating shaft;

[0006] The first single-sided grinding tooth is integrally formed on the left side of the circumferential wall of the cylindrical body. The left and right tooth surfaces of the first single-sided grinding tooth are the left suspended surface and the right grinding surface, respectively.

[0007] The second single-sided grinding tooth is integrally formed on the right side of the circumferential wall of the cylindrical body. The left and right tooth surfaces of the second single-sided grinding tooth are the left grinding surface and the right overhang surface. The inner ends of the left grinding surface and the right grinding surface are integrally connected, and the axial distance between the two is at least twice the tooth pitch of the workpiece to be ground.

[0008] When machining the workpiece, the left and right overhanging surfaces do not contact the workpiece. The right grinding surface machines the left tooth ridge of the anterior tooth of the workpiece, while the left grinding surface skips at least one tooth to machine the right tooth ridge of the posterior tooth of the workpiece, so that the grinding start point of the left tooth ridge is always earlier than that of the right tooth ridge.

[0009] In some embodiments, the angle between the right grinding surface and the vertical surface of the first single-sided grinding tooth is equal to the tooth profile half angle of the workpiece to be ground, and the angle between the left overhanging surface and the vertical surface is less than the tooth profile half angle of the workpiece to be ground, thereby forming a single-sided grinding tooth with right tooth surface grinding and left tooth surface overhang.

[0010] The angle between the left grinding surface and the vertical surface of the second single-sided grinding tooth is equal to the half angle of the tooth profile of the workpiece to be ground, and the angle between the right overhanging surface and the vertical surface is less than the half angle of the tooth profile of the workpiece to be ground, thus forming a single-sided grinding tooth with the left tooth surface being ground and the right tooth surface being overhanging.

[0011] In some embodiments, the median diameter of the first single-sided grinding tooth and the second single-sided grinding tooth is higher than the median diameter of the tooth profile of the workpiece to be ground, thereby forming a single-sided grinding tooth with one side in contact and the other side suspended.

[0012] In some embodiments, the first single-sided grinding tooth and the second single-sided grinding tooth are fine grinding teeth, and the grinding wheel also includes several coarse grinding teeth. The several coarse grinding teeth are integrally formed on the circumferential wall of the cylindrical body, and the right side face and the left overhang face of the rightmost coarse grinding tooth are integrally connected.

[0013] In some implementations, the included angles of the left and right sides and the vertical plane of several coarse grinding teeth are all equal to the tooth profile half angle of the workpiece to be ground.

[0014] Or the grinding depth of several coarse grinding teeth gradually increases.

[0015] In some embodiments, a first fillet is provided at the connection between adjacent coarse grinding teeth, at the connection between the left grinding surface and the right grinding surface, and at the connection between the rightmost coarse grinding tooth and the left overhanging surface.

[0016] In some embodiments, a number of coarse grinding teeth, a first single-sided grinding tooth, and a second single-sided grinding tooth are integrally formed on the middle convex ring of the cylindrical body from left to right. The coarse grinding teeth and the right suspended surface are integrally connected to the two end faces of the convex ring through an inclined transition surface.

[0017] In some implementations, the grinding wheel is a grinding roller or a grinding wheel;

[0018] Or the workpiece to be ground is a spiral tap;

[0019] Or the grinding wheel is made of diamond.

[0020] In some embodiments, the axial distance between the first single-sided grinding tooth and the second single-sided grinding tooth is twice the tooth pitch of the workpiece to be ground.

[0021] This skip-tooth grinding wheel has a first single-sided grinding tooth and a second single-sided grinding tooth with skip-tooth grinding function, ensuring that the grinding start point of the left tooth is always earlier than that of the right tooth. Its advantages are: First, the first and second single-sided grinding teeth are independent and have no fixed pitch, allowing for grinding of workpieces with various pitches, offering strong versatility. Furthermore, both teeth can be processed simultaneously, resulting in high grinding efficiency. Second, the skip-tooth grinding function of the first and second single-sided grinding teeth ensures that the grinding start point of the left tooth is always earlier than that of the right tooth. Within a certain width, this allows for the grinding of the workpiece to have a cylindrical cutting edge on the left tooth while the right tooth does not, enabling the workpiece to withstand higher cutting loads and significantly extending its service life. It is suitable not only for ordinary machining but also for special tool machining, thus expanding its applicability.

[0022] According to another aspect of the present invention, a teeth grinding module includes any of the above-mentioned teeth grinding wheels, a rotating shaft, and a mounting end plate;

[0023] The cylindrical body of the grinding wheel has several connecting screw holes evenly distributed on both sides of its circumference. The central shaft of the grinding wheel is keyed to one end of a rotating shaft. The two sides of the grinding wheel are fitted with the positioning end plate and mounting end plate of the rotating shaft, and their connecting screw holes and the two are detachably connected via threaded components. The other end of the rotating shaft is fixed to the drive unit. Its advantages are: firstly, this grinding module features a new type of grinding wheel, which is highly versatile, has high processing efficiency, and is suitable for processing special cutting parts such as spiral taps; secondly, this grinding module is securely fixed and has high installation accuracy, enabling stable and high-precision grinding operations. Attached Figure Description

[0024] Figure 1 This is a cross-sectional schematic diagram of a tooth grinding wheel for skipped tooth processing according to one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A partial schematic diagram of a grinding wheel used in skipped tooth machining is shown.

[0026] Figure 3 for Figure 2 The diagram shows an enlarged view of the H section of a grinding wheel used in skip-tooth machining.

[0027] Figure 4 for Figure 1 The diagram shown illustrates a raised middle diameter structure for the grinding wheel.

[0028] Figure 5 for Figure 1 The diagram shows a grinding wheel used for machining a workpiece.

[0029] Figure 6 This is a schematic diagram of a molar module according to one embodiment of the present invention;

[0030] Grinding wheel 00, cylindrical body 1, central shaft hole 10, convex ring 11, connecting screw hole 12, first single-sided grinding tooth 2, right grinding surface 20, left overhang surface 21, second single-sided grinding tooth 3, left grinding surface 30, right overhang surface 31, coarse grinding tooth 4, first fillet 5, inclined transition surface 6, second fillet 7.

[0031] Rotating shaft 01, positioning end plate 011;

[0032] Part 02 to be ground has a left-side toothed bevel 021 and a right-side toothed bevel 022.

[0033] Install end plate 03. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0035] Figures 1 to 5 A grinding wheel for skipped tooth machining according to one embodiment of the present invention is schematically shown. As shown, the grinding wheel for skipped tooth machining includes: a cylindrical body 1, a first single-sided grinding tooth 2, and a second single-sided grinding tooth 3;

[0036] The cylindrical body 1 has a central shaft hole 10 in the middle for fixed connection of the rotating shaft 01;

[0037] The first single-sided grinding tooth 2 is integrally formed on the left side of the circumferential wall of the cylindrical body 1. The left and right tooth surfaces of the first single-sided grinding tooth 2 are the left suspended surface 21 and the right grinding surface 20, respectively. A preferred structure of the first single-sided grinding tooth 2 is that the angle between the right grinding surface 20 and the vertical plane is equal to the half-angle of the tooth profile of the workpiece 02 to be ground, and the angle between the left suspended surface 21 and the vertical plane is less than the half-angle of the tooth profile of the workpiece 02 to be ground, thus forming a single-sided grinding tooth with the right tooth surface ground and the left tooth surface suspended. Another preferred structure of the first single-sided grinding tooth 2 is that the mean diameter of the first single-sided grinding tooth 2 is higher than the mean diameter of the tooth profile of the workpiece 02 to be ground, thus forming a single-sided grinding tooth with one side in contact and the other side suspended. Preferably, the first single-sided grinding tooth 2 can also be configured as a single-sided grinding tooth having both of the above structures simultaneously.

[0038] The second single-sided grinding tooth 3 is integrally formed on the right side of the circumferential wall of the cylindrical body 1. The left and right tooth surfaces of the second single-sided grinding tooth 3 are the left grinding surface 30 and the right suspended surface 31. A preferred structure of the second single-sided grinding tooth 3 is that the angle between the left grinding surface 30 and the vertical plane is equal to the half-angle of the tooth profile of the workpiece 02 to be ground, and the angle between the right suspended surface 31 and the vertical plane is less than the half-angle of the tooth profile of the workpiece 02 to be ground, thus forming a single-sided grinding tooth with the left tooth surface ground and the right tooth surface suspended. Another preferred structure of the second single-sided grinding tooth 3 is that the mean diameter of the second single-sided grinding tooth 3 is higher than the mean diameter of the tooth profile of the workpiece 02 to be ground, thus forming a single-sided grinding tooth with one side in contact and the other side suspended. Preferably, the second single-sided grinding tooth 3 can also be configured as a single-sided grinding tooth having both of the above structures simultaneously.

[0039] The inner ends of the left grinding surface 30 and the right grinding surface 20 are integrally connected, and the axial distance between them is at least twice the tooth pitch of the workpiece 02 to be ground; wherein the axial distance between the first single-sided grinding tooth 2 and the second single-sided grinding tooth 3 is preferably twice the tooth pitch of the workpiece 02 to be ground.

[0040] When machining the workpiece 02, the left overhanging surface 21 and the right overhanging surface 31 do not contact the workpiece 02. The right grinding surface 20 processes the left tooth crest 021 of the anterior tooth of the workpiece 02, and the left grinding surface 30 skips at least one tooth to process the right tooth crest 022 of the posterior tooth of the workpiece 02, so that the grinding start point of the left tooth crest 021 is always earlier than that of the right tooth crest 022.

[0041] This skip-tooth grinding wheel has a first single-sided grinding tooth 2 and a second single-sided grinding tooth 3 with skip-tooth grinding function, ensuring that the grinding start point of the left tooth 021 is always earlier than that of the right tooth 022. Its advantages are: First, the first single-sided grinding tooth 2 and the second single-sided grinding tooth 3 are independent and have no fixed pitch, allowing for grinding of workpieces 02 with various pitches, providing strong versatility. Furthermore, both grinding teeth can be processed simultaneously, resulting in high grinding efficiency. Second, the skip-tooth grinding function of the first single-sided grinding tooth 2 and the second single-sided grinding tooth 3 ensures that the grinding start point of the left tooth 021 is always earlier than that of the right tooth 022. Within a certain width, it can be processed so that the left tooth of the workpiece 02 has a cylindrical cutting edge, while the right tooth does not. This allows the workpiece 02 to withstand higher cutting loads, greatly extending its service life. It is suitable not only for ordinary machining but also for special tool machining, thus expanding its applicability.

[0042] Furthermore, the first single-sided grinding tooth 2 and the second single-sided grinding tooth 3 are fine grinding teeth. The grinding wheel 00 also includes several coarse grinding teeth 4, which are integrally formed on the circumferential wall of the cylindrical body 1, and the right side face and the left overhanging face 21 of the rightmost coarse grinding tooth 4 are integrally connected. Preferably, the included angles of the left and right sides and the vertical plane of the several coarse grinding teeth 4 are all set to be equal to the tooth profile half angle of the workpiece 02 to be ground. Preferably, the grinding depth of the several coarse grinding teeth 4 gradually increases. The beneficial effect is that the coarse grinding teeth 4 are set for coarse grinding, which can use a larger grinding depth to quickly remove most of the excess material on the surface of the part, while fine grinding uses a very small grinding depth to ensure the micro-machining and high smoothness of the surface of the part. This grinding wheel can complete the dressing work of the workpiece 02 to be ground in one go, ensuring both processing speed and grinding accuracy.

[0043] Preferably, a first fillet 5 is provided at the connection points of adjacent coarse grinding teeth 4, the connection points of the left grinding surface 30 and the right grinding surface 20, and the connection points of the rightmost coarse grinding tooth 4 and the left overhanging surface 21. The beneficial effects are: the first fillet 5 can improve the strength and durability of the part; by eliminating sharp angles, the fillet can disperse stress and reduce stress concentration, thereby improving the strength and durability of the part.

[0044] Furthermore, the outermost coarse grinding tooth 4 and the outer side of the right overhanging surface 31 are also provided with an inclined transition surface 6; its beneficial effect is that the inclined surface can ensure good strength and avoid the workpiece.

[0045] A second fillet 7 is also provided at the junction of the inclined transition surface 6, the coarse grinding tooth 4, and the right overhanging surface 31. Its beneficial effect is that the second fillet 7 can improve the strength and durability of the part. By eliminating sharp angles, the fillet can disperse stress and reduce stress concentration, thereby improving the strength and durability of the part.

[0046] Furthermore, a convex ring 11 is formed in the middle of the cylindrical body 1, and open ends are formed at both ends; several coarse grinding teeth 4, first single-sided grinding teeth 2, and second single-sided grinding teeth 3 are integrally formed on the convex ring 11 from left to right. The coarse grinding teeth 4 and the right open surface 31 are integrally connected to the two end faces of the convex ring 11 through an inclined transition surface 6. Its beneficial effect is that the structure is easy to process.

[0047] Preferably, the grinding wheel 00 is a grinding roller or a grinding wheel. Its advantage is that this selection provides excellent grinding function.

[0048] Preferably, the grinding wheel 00 is made of diamond. Its advantages are: high hardness, high machining accuracy, and long service life.

[0049] Figure 6 The diagram schematically shows a teeth grinding module according to one embodiment of the present invention, including any of the above-mentioned teeth grinding wheels 00, a rotating shaft 01, and a mounting end plate 03;

[0050] The cylindrical body 1 of the grinding wheel 00 has several connecting screw holes 12 evenly distributed on both sides of its circumference. The central shaft hole 10 of the grinding wheel 00 is keyed to one end of the rotating shaft 01. The two sides of the grinding wheel 00 are fitted with the positioning end plate 011 and the mounting end plate 03 of the rotating shaft 01, and their connecting screw holes 12 and the two are detachably connected by threaded parts. The other end of the rotating shaft 01 is fixed to the drive unit. Its advantages are: firstly, this grinding module has a new type of grinding wheel, which is highly versatile and has high processing efficiency, and is also suitable for processing special cutting parts such as spiral taps; secondly, this grinding module is firmly fixed and has high installation accuracy, enabling stable and high-precision grinding work.

[0051] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A grinding wheel for skipped tooth machining, characterized in that, Includes: a cylindrical body (1), a first single-sided grinding tooth (2), and a second single-sided grinding tooth (3); The cylindrical body (1) has a central shaft hole (10) in the middle for fixing and connecting the rotating shaft (01); The first single-sided grinding tooth (2) is integrally formed on the left side of the circumferential wall of the cylindrical body (1). The left and right tooth surfaces of the first single-sided grinding tooth (2) are the left suspended surface (21) and the right grinding surface (20), respectively. The second single-sided grinding tooth (3) is integrally formed on the right side of the circumferential wall of the cylindrical body (1). The left and right tooth surfaces of the second single-sided grinding tooth (3) are the left grinding surface (30) and the right overhang surface (31). The inner ends of the left grinding surface (30) and the right grinding surface (20) are integrally connected, and the axial distance between the two is at least twice the tooth pitch of the workpiece (02) to be ground. When machining the workpiece (02), the left overhanging surface (21) and the right overhanging surface (31) do not contact the workpiece (02). The right grinding surface (20) processes the left tooth crest (021) of the anterior tooth of the workpiece (02), and the left grinding surface (30) skips at least one tooth to process the right tooth crest (022) of the posterior tooth of the workpiece (02), so that the grinding start point of the left tooth crest (021) is always earlier than that of the right tooth crest (022).

2. The grinding wheel for skipped tooth processing according to claim 1, characterized in that, The angle between the right grinding surface (20) and the vertical surface of the first single-sided grinding tooth (2) is equal to the tooth profile half angle of the workpiece to be ground (02), and the angle between the left suspended surface (21) and the vertical surface is less than the tooth profile half angle of the workpiece to be ground (02), thus forming a single-sided grinding tooth with right tooth surface grinding and left tooth surface suspended. The angle between the left grinding surface (30) and the vertical surface of the second single-sided grinding tooth (3) is equal to the tooth profile half angle of the workpiece to be ground (02), and the angle between the right suspended surface (31) and the vertical surface is less than the tooth profile half angle of the workpiece to be ground (02), thus forming a single-sided grinding tooth with left tooth surface grinding and right tooth surface suspended.

3. The grinding wheel for skipped tooth processing according to claim 2, characterized in that, The median diameter of the first single-sided grinding tooth (2) and the second single-sided grinding tooth (3) is higher than the median diameter of the tooth profile of the workpiece to be ground (02), thus forming a single-sided grinding tooth with one side in contact and the other side suspended.

4. The grinding wheel for skipped tooth processing according to claim 1, characterized in that, The first single-sided grinding tooth (2) and the second single-sided grinding tooth (3) are fine grinding teeth. The grinding wheel (00) also includes several coarse grinding teeth (4). Several coarse grinding teeth (4) are integrally formed on the circumferential wall of the cylindrical body (1), and the right side surface of the rightmost coarse grinding tooth (4) and the left overhang surface (21) are integrally connected.

5. A grinding wheel for skipped tooth machining according to claim 4, characterized in that, The included angles of the left and right sides and the vertical plane of several of the coarse grinding teeth (4) are all equal to the tooth profile half angle of the workpiece (02) to be ground; Or the grinding depth of several of the coarse grinding teeth (4) gradually increases.

6. A grinding wheel for skipped tooth machining according to claim 4, characterized in that, The connection points of adjacent coarse grinding teeth (4), the connection points of the left grinding surface (30) and the right grinding surface (20), and the connection points of the rightmost coarse grinding tooth (4) and the left overhanging surface (21) are all provided with a first rounded corner (5).

7. A grinding wheel for skipped tooth machining according to any one of claims 1 to 6, characterized in that, The cylindrical body (1) has several coarse grinding teeth (4), first single-sided grinding teeth (2), and second single-sided grinding teeth (3) integrally formed from left to right on the middle convex ring (11). The coarse grinding teeth (4) and the right suspended surface (31) are integrally connected to the two end faces of the convex ring (11) through the inclined transition surface (6).

8. A grinding wheel for skipped tooth machining according to claim 7, characterized in that, The grinding wheel (00) is a grinding roller or a grinding wheel; Or the workpiece to be ground (02) is a spiral tap; Or the grinding wheel (00) may be made of diamond.

9. A grinding wheel for skipped tooth machining according to claim 8, characterized in that, The axial spacing between the first single-sided grinding tooth (2) and the second single-sided grinding tooth (3) is twice the tooth pitch of the workpiece to be ground (02).

10. A molar module, characterized in that, Includes the grinding wheel (00) as described in any one of claims 1 to 9, as well as the rotating shaft (01) and the mounting end plate (03); The cylindrical body (1) of the grinding wheel (00) has several connecting screw holes (12) evenly distributed on both sides of the circumference. The central shaft hole (10) of the grinding wheel (00) is keyed to one end of the rotating shaft (01). The two sides of the grinding wheel (00) are attached to the positioning end plate (011) and mounting end plate (03) of the rotating shaft (01), and their connecting screw holes (12) and the two are detachably connected by threaded parts. The other end of the rotating shaft (01) is fixed to the drive unit.

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