阅读说明：本技术 一种高转速杯形砂轮 (High-rotation-speed cup-shaped grinding wheel ) 是由 宋京新 梁安宁 龙慧玲 叶勇 王志勇 赵亮 秦凤明 于 2020-04-15 设计创作，主要内容包括：本发明涉及一种高转速杯形砂轮,包括环状的基体和若干齿片；齿片沿周向间隔排列的固定在基体上的一侧形成齿环,齿环远离基体的一侧为环形的工作面,并且相邻两个齿片之间隔开形成向工作面输送冷却水的通水槽；还包括分流结构；分流结构固定在齿环上并将冷却水分流成两个支路,其中第一支路通过通水槽内部向工作面外侧的区域输送冷却水,第二支路通过通水槽外部向工作面内侧的区域输送冷却水,并再将冷却水从工作面的内侧区域输送至工作面的外侧区域。该杯形砂轮在高速转动时,其利用离心力可以将基体内的冷却水分流成两个支路,进而实现冷却水将工作面全部覆盖,确保杯形砂轮加工时所需的冷却水。(The invention relates to a high-rotation-speed cup-shaped grinding wheel which comprises an annular base body and a plurality of tooth sheets; one side of each tooth piece which is arranged at intervals along the circumferential direction and fixed on the base body forms a tooth ring, one side of each tooth ring, which is far away from the base body, is an annular working surface, and a water through groove for conveying cooling water to the working surface is formed between every two adjacent tooth pieces at intervals; the device also comprises a shunting structure; the split structure is fixed on the toothed ring and splits the cooling water into two branches, wherein the first branch conveys the cooling water to the area outside the working face through the inside of the water through groove, and the second branch conveys the cooling water to the area inside the working face through the outside of the water through groove and conveys the cooling water from the area inside the working face to the area outside the working face. When the cup-shaped grinding wheel rotates at a high speed, the cooling water in the base body can be divided into two branches by using centrifugal force, so that the working face is completely covered by the cooling water, and the cooling water required by cup-shaped grinding wheel machining is ensured.)

1. A high-speed cup-shaped grinding wheel comprises an annular base body (1) and a plurality of tooth sheets (2); the tooth sheets (2) are fixed on one side of the base body (1) at intervals along the circumferential direction to form a tooth ring, one side of the tooth ring, which is far away from the base body (1), is an annular working surface, and a water passing groove (3) for conveying cooling water to the working surface is formed between every two adjacent tooth sheets (2) at intervals; the device is characterized by also comprising a shunting structure; the split structure is fixed on the gear ring and splits cooling water into two branches, wherein the first branch conveys the cooling water to the area outside the working surface through the inside of the water through groove (3) under the action of the centrifugal force of the rotation of the base body (1), the second branch conveys the cooling water to the area inside the working surface through the outside of the water through groove (3) under the action of the centrifugal force of the rotation of the base body (1), and the second branch conveys the cooling water to the area outside the working surface from the area inside the working surface under the blockage of the machined workpiece.

2. A high speed cup wheel according to claim 1, wherein the flow dividing structure comprises an outer ring body (4) and an inner ring body (5); the outer ring body (4) is fixed on the outer side of the toothed ring, the inner ring body (5) is fixed on the inner side of the toothed ring, a water through hole (6) communicated with the water through groove (3) is formed in the position, corresponding to the water through groove (3), of the side wall of the inner ring body (5), the first branch is formed in the region from the water through hole (6) to the outer side of the working face through the water through groove (3), and the second branch is formed in the region from the inner side wall of the inner ring body (5) to the inner side of the working face.

3. High speed cup wheel according to claim 2, characterized in that said water passage holes (6) are of annular configuration provided with a ring on the side wall of said inner ring (5).

4. A high speed cup wheel according to claim 3, wherein the water passage holes (6) are provided in the side wall of the inner ring (5) at the end remote from the working surface.

5. A high speed cup wheel according to claim 2, wherein the water passage hole (6) is an annular structure having two or more turns in the side wall of the inner ring (5).

6. A high-speed cup wheel according to claim 2, wherein the inner and outer ends of the tooth plate (2) are respectively provided with a second arc block (8) and a first arc block (7), and the two sides of the second arc block (8) are respectively provided with a notch (9); after the tooth sheets (2) are fixed on the base body (1), the first arc blocks (7) on all the tooth sheets (2) are spliced into the outer ring body (4), the second arc blocks (8) on all the tooth sheets (2) are spliced into the inner ring body (5), and after two adjacent second arc blocks (8) are spliced, the notches (9) on the second arc blocks are butted into the water through holes (6) communicated with the corresponding water through grooves (3).

7. High speed cup wheel according to claim 6, characterized in that said first (7) and second (8) arc-shaped blocks are integral with the respective tooth plate (2).

8. A high speed cup wheel according to claim 1, wherein the water channel (3) is of straight channel configuration radially coincident with the body (1).

9. A high speed cup wheel according to claim 1, wherein the water channel (3) is of a tapered slot configuration inclined radially with respect to the body (1).

10. A high speed cup wheel according to any of claims 1 to 9, further comprising a coupling disc (10) for connection to a spindle of a machine tool; the connecting disc (10) is fixed on one side, far away from the gear ring, of the base body (1).

11. A high speed cup wheel according to any of claims 1 to 9, wherein the water trough (3) is provided with a plurality of grooves (11) on one side or both sides, and the working surface is easily and rapidly worn at the positions corresponding to the grooves (11) and forms circumferential grooves (12), and the grooves (12) and the water trough (3) are staggered to form grooves with a net structure on the working surface.

12. High speed cup wheel according to claim 11, characterized in that said grooves (11) are arranged on different diameters of said ring gear, and the connection of said grooves (11) on the same diameter circumference of said ring gear is arranged in a single arc or in a plurality of arcs, said single arc having a maximum length of half a turn of the corresponding circumference and said plurality of arcs having a maximum cumulative length of half a turn of the corresponding circumference.

13. High speed cup wheel according to claim 2, characterized in that the thickness of the outer ring (4) and of the inner ring (5) is set at 3mm or below 1 mm.

14. The high-speed cup wheel according to claim 9, wherein when the rotational linear velocity of the base (1) reaches 45m/s or more, the end of the water passage groove (3) closer to the outside of the ring gear is inclined at an angle θ in the direction of rotation of the base with respect to the end of the water passage groove (3) closer to the inside of the ring gear, and the value of the angle θ increases as the rotational linear velocity of the base (1) increases.

Technical Field

The invention relates to the field of superhard material grinding tools, in particular to a high-rotation-speed cup-shaped grinding wheel.

Background

A diamond working gear ring of the cup-shaped grinding wheel of the existing medium-low rotating speed processing technology mainly adopts the forms of a through gear ring (comprising oblique through teeth), an inner gear ring (comprising oblique inner teeth), an outer gear ring (comprising oblique outer teeth) and a toothless ring. During high-speed machining, a layer of 'airflow barrier' is formed on the inner wall, the outer wall and the working surface of the grinding wheel, and the various types of cup-shaped grinding wheels have the defect that cooling water cannot fully act on the whole working surface under the action of the 'airflow barrier' and centrifugal force. Therefore, the prior art cup wheel is not adaptable to high speed machining, as follows:

Disclosure of Invention

In summary, in order to overcome the defects of the prior art, the invention provides a high-speed cup-shaped grinding wheel.

The technical scheme for solving the technical problems is as follows: a high-speed cup-shaped grinding wheel comprises an annular base body and a plurality of tooth sheets; one side of each tooth piece, which is fixed on the base body, is arranged at intervals along the circumferential direction to form a tooth ring, one side of each tooth ring, which is far away from the base body, is an annular working surface, and a water passing groove for conveying cooling water to the working surface is formed between every two adjacent tooth pieces at intervals; the device also comprises a shunting structure; the split structure is fixed on the gear ring and splits cooling water into two branches, wherein the first branch conveys the cooling water to the area outside the working surface through the inside of the water through groove under the action of the centrifugal force of the rotation of the base body, and the second branch conveys the cooling water to the area inside the working surface through the outside of the water through groove under the action of the centrifugal force of the rotation of the base body, and conveys the cooling water to the area outside the working surface from the area inside the working surface under the blockage of the processed workpiece.

The invention has the beneficial effects that: when the cup-shaped grinding wheel rotates at a high speed, the cup-shaped grinding wheel can divide cooling water entering the inner diameter cavity into two branches by utilizing centrifugal force, the two branches respectively convey cooling water to the outer side and the inner side of the working surface, and therefore the working surface is completely covered by the cooling water and is fully cooled, and cooling guarantee is provided for high-speed, high-quality and high-efficiency grinding.

On the basis of the technical scheme, the invention can be further improved as follows:

further, the shunt structure comprises an outer ring body and an inner ring body; the outer ring body is fixed on the outer side of the toothed ring, the inner ring body is fixed on the inner side of the toothed ring, a water through hole communicated with the water through groove is formed in the position, corresponding to the water through groove, of the side wall of the inner ring body, the first branch is formed in the area from the water through hole to the outer side of the working face through the water through groove, and the second branch is formed in the area from the inner side wall of the inner ring body to the inner side of the working face.

The beneficial effect of adopting the further technical scheme is as follows: the cooling water entering the inner diameter cavity is divided into two branches, and the two branches respectively convey the cooling water to the areas outside and inside the working face.

Furthermore, the limber hole is of an annular structure, and a circle of limber hole is arranged on the side wall of the inner ring body.

Further, the limber hole is located the one end that the working face was kept away from on the inner ring body lateral wall.

The beneficial effect of adopting the further technical scheme is as follows: when the cooling water is supplied to the inner diameter cavity from the direction passing through the base body or when the cooling water is supplied to the inner diameter cavity from the direction of the working end face but the converging device is arranged on the base body, the cooling water in the base body is limited to be divided into two branches, the utilization rate of the cooling water is improved, and the cooling water is more uniformly distributed on the working face.

Further, the limber hole is an annular structure, and two or more circles are arranged on the side wall of the inner ring body.

The beneficial effect of adopting the further technical scheme is as follows: when the cooling water is supplied from the working end face direction to the inner diameter cavity direction in a spraying mode and the base body is not provided with the confluence device, the utilization rate of the cooling water can be improved, and the cooling water is more uniformly distributed on the working face.

Furthermore, a second arc block and a first arc block are respectively arranged at the inner end and the outer end of the tooth sheet, and notches are respectively arranged at two sides of the second arc block; after the tooth sheets are fixed on the base body, the first arc blocks on all the tooth sheets are spliced into the outer ring body, the second arc blocks on all the tooth sheets are spliced into the inner ring body, and after two adjacent second arc blocks are spliced, the notches on the second arc blocks are butted to form the water through holes communicated with the corresponding water through grooves.

Further, the first arc block and the second arc block are integrally formed with the corresponding tooth piece.

Further, the water passing groove is of a straight groove structure which is consistent with the radial direction of the base body.

Further, the water passing groove is of a chute structure which is inclined relative to the radial direction of the base body.

Further, the machine tool also comprises a connecting disc connected with the main shaft of the machine tool; the connecting disc is fixed on one side of the base body, which is far away from the gear ring.

The beneficial effect of adopting the further technical scheme is as follows: and the connection with the main shaft of the machine tool is realized.

Furthermore, a plurality of grooves are formed in one side or two sides of the water passing groove, the positions, corresponding to the grooves, on the working surface are easy to wear quickly, circumferential grooves are formed, and grooves and the water passing groove are staggered to form groove bodies of a net structure on the working surface.

The beneficial effect of adopting the further technical scheme is as follows: the groove bodies of the net structure enable cooling water to be distributed to all positions on the working face, so that the working face can be covered by the cooling water more easily, and cooling can be fully carried out.

Furthermore, the grooves are arranged on different diameters of the toothed ring, connecting lines of the grooves on the circumference of the same diameter of the toothed ring are uniformly distributed in a single-section circular arc or multiple-section circular arcs, the longest length of the single-section circular arc is a half circle of the corresponding circumference, and the longest accumulated length of the multiple-section circular arcs is a half circle of the corresponding circumference.

The beneficial effect of adopting the further technical scheme is as follows: the groove arrangement on the same diameter circumference does not link up whole circumference, has formed unsmooth wave form on this circumference promptly, during the emery wheel edging, can produce axial and radial micro vibration promptly, plays the effect of the intermittent grinding of impacted style, and the retardation of cuttings is the frequency and relaxs, very big increase chip removal, cooling effect.

Further, the thickness of the outer ring and the inner ring is set to 3mm or 1mm or less.

Further, when the rotational linear velocity of the base body reaches 45m/s or more, the end of the water passage groove near the outside of the ring gear is inclined by an angle θ in the direction in which the base body rotates with respect to the end of the water passage groove near the inside of the ring gear, and the value of the angle θ is larger as the rotational linear velocity of the base body is higher.

The beneficial effect of adopting the further technical scheme is as follows: when the grinding wheel rotates at a high speed to reach a certain value, the defects that the excessive cooling water is quickly thrown out from the end face of the outer ring of the grinding wheel due to the increase of centrifugal force, but the working face of the inner ring is cooled due to water shortage are avoided. The water passing grooves are reversely arranged, so that the radial rapid leakage of the cooling water is retarded, and a 'fountain' effect is formed, and the cooling effect of the cooling water on a working surface is enhanced.

Drawings

FIG. 1 is a schematic structural view of a straight-tooth annular cup wheel of the prior art;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic diagram of a prior art annular cup wheel with skewed teeth;

FIG. 5 is a schematic diagram of a prior art internal tooth annular cup wheel;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a cross-sectional view B-B of FIG. 6;

FIG. 8 is a schematic diagram of a prior art toothless annular cup wheel;

FIG. 9 is a schematic diagram of a prior art external tooth annular cup wheel;

FIG. 10 is a three-dimensional view of a first embodiment of the present invention;

FIG. 11 is a top view of FIG. 10;

FIG. 12 is a cross-sectional view C-C of FIG. 11;

FIG. 13 is a three-dimensional view of a second embodiment of the present invention;

FIG. 14 is a top view of FIG. 13;

FIG. 15 is a cross-sectional view D-D of FIG. 14;

FIG. 16 is a three-dimensional view of a third embodiment of the present invention;

FIG. 17 is a three-dimensional view of a tooth plate in accordance with a third embodiment of the present invention;

FIG. 18 is a three-dimensional view showing a water passage tank of a straight tank structure and a groove formed in one side of the water passage tank in the fourth embodiment;

FIG. 19 is a three-dimensional view showing a water passage tank of a chute structure and a groove formed in one side of the water passage tank in the fourth embodiment;

FIG. 20 is a three-dimensional view showing a water passage tank of a chute structure and grooves formed on both sides of the water passage tank in a fourth embodiment;

FIG. 21 is an enlarged view E of FIG. 20;

FIG. 22 is a three-dimensional view of grooves which form a net structure on the working surface after the toothed ring is worn in the fourth embodiment;

FIG. 23 is an enlarged view F of FIG. 22;

FIG. 24 is a schematic view of the arrangement of grooves on the same diameter circle;

FIG. 25 is a schematic view showing a rotation direction of a grinding wheel and a forward direction of an inclined direction of a water passage groove in a conventional machining process;

FIG. 26 is a schematic view showing the fifth embodiment in which the rotational direction of the grindstone is opposite to the inclination direction of the water passage tank.

Wherein the arrows indicate the flow direction of the cooling water or the rotation direction of the grinding wheel.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the water-through hole-type water-cooling device comprises a base body, 2 parts of a tooth piece, 3 parts of a water-through groove, 4 parts of an outer ring, 5 parts of an inner ring, 6 parts of a water-through hole, 7 parts of a first arc block, 8 parts of a second arc block, 9 parts of a notch, 10 parts of a connecting disc, 11 parts of a groove, 12 parts of a groove.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.