An outer cylindrical surface water supply grinding wheel with improved cooling rate

Abstract

The present invention relates to an outer cylindrical surface water supply grinding wheel with improved cooling rate, comprising a grinding wheel body, a water storage channel, a water collecting plate and a plurality of blades; the annular end surface of the outer periphery of the bottom end of the grinding wheel body is a grinding layer, the water storage channel is circumferentially opened on the outer cylindrical surface of the grinding wheel body to drain cooling water from the top end of the grinding wheel body to the bottom end, the water collecting plate is detachably connected to the bottom end of the grinding wheel body and gathers the atomized cooling water flowing to the bottom end, and drains it to the grinding layer under the action of centrifugal force; the water storage channel forms a trumpet-shaped inclined channel between the side wall of the grinding wheel body and the water collecting plate; a plurality of blades are circumferentially and spaced apart in the water storage channel and are located above the water collecting plate. The present invention can solve the problem that there is a narrow gap area between the grinding wheel and the external device and the cooling water cannot be pumped into the inner cavity to cool the grinding layer, and realizes the conversion of external cooling into internal cooling mode. The cooling effect is greatly improved compared with the external cooling mode, which is conducive to the implementation of a grinding process that increases the rotation speed, improves work efficiency and improves quality.

Description

Technical Field

[0001] The invention relates to the technical field of grinding wheel tools, in particular to an outer cylindrical surface water-supplying grinding wheel with improved cooling rate. Background Art

[0002] The working parts of the diamond cup wheel and disc wheel in the prior art are the end face and the outer cylindrical surface. When the spindle has no internal cooling water supply structure, this type of end face grinding tool adopts external cooling. When the end face grinding tool is working, if the inner diameter is blocked by the workpiece and water cannot be pumped into the inner cavity, the water is only supplied by the outer diameter. The end face working surface of the end face grinding tool is minimally affected by the cooling water, and the closer to the inner diameter, the worse the cooling effect. The following methods are usually used to improve it:

[0003] 1. Open a water groove that runs through the inner and outer diameters on the circumferential surface of the end face grinding tool, then spray cooling water into the water groove, enter the inner cavity through the water groove, and then flow through the end face of the grinding tool under the action of centrifugal force on the inner wall to achieve end face cooling. This method has a certain effect at low speeds. At high speeds, the amount of water entering is extremely small, and the larger the ring width of the grinding tool, the smaller the amount of water entering.

[0004] 2. A water tank is opened on the end face of the base body opposite to the working end face of the end face grinding tool, which is connected to the inner cavity. Then water is sprayed into the water tank, enters the inner cavity through the water tank, and then flows through the end face of the grinding tool under the action of centrifugal force on the inner wall to achieve end face cooling. The effect is relatively good, such as the patent "An external rotation and internal cooling mechanism for grinding tools (ZL201921429751.X)", but this method can be implemented only if there is enough space to install the water supply channel. In reality, there is often a situation where there is not enough space to install the water supply pipe so that its water outlet is facing the axial direction of the water tank. When the motor flange Φ1 and the inner diameter φ of the end face mold are close in size and the b value is small, the water supply pipe is difficult to install, and in the slit area of ​​​​b, the strength and radial thickness of the airflow barrier are very large. When water is injected from the slit, it is easily affected by the airflow into the atomized state. Using the method of this patent, it is difficult for the water supply to enter the inner cavity of the mold axially in a beam state, the water intake is small, and the effect is greatly reduced; another example is the patent "A structure for improving the utilization rate of cooling water (ZL202020813767.7)", but this method cannot face the axial direction of the water supply pipe to the water inlet of the grinding wheel, but only injects water laterally in parallel to the slit area of ​​​​b. Especially when the water inlet channel is vertical and there is no water storage area, the water intake is still small, and the effect is not good. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an outer cylindrical surface water supply grinding wheel with improved cooling rate in view of the deficiencies of the prior art.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: an outer cylindrical surface water supply grinding wheel with improved cooling rate, comprising a grinding wheel body, a water storage channel, a water collection tray and a plurality of blades;

[0007] The water storage channel is arranged around the inside of the grinding wheel body and extends along the axial direction of the grinding wheel body, dividing the grinding wheel body into an inner ring base and an outer ring base;

[0008] A connecting through hole for connecting to the main shaft flange is provided at the center of the top end of the inner ring base, an open area is provided at the bottom end of the inner ring base, and the ring end surface at the bottom end of the outer ring base is a grinding layer;

[0009] The top of the outer ring base is lower than the top of the inner ring base, a gap is provided between the top of the outer ring base and the inner ring base for cooling water to enter, the top of the water storage channel is open and communicated with the gap, and the inside of the water storage channel is connected from top to bottom to form a channel for guiding cooling water from the top open to the bottom of the grinding wheel body;

[0010] The water collecting plate is an annular plate, the water collecting plate is coaxial with the grinding wheel body and is located at the bottom end of the water storage channel, and one end of the water collecting plate is installed at the bottom end of the inner ring base, and the other end of the water collecting plate extends outward and leaves an annular gap between the outer ring base to guide the cooling water flowing to the bottom end to the grinding layer;

[0011] The water storage channel forms a trumpet-shaped inclined channel along the outer side wall of the inner ring base and the inner side wall of the outer ring base;

[0012] A plurality of blades are arranged in the water storage channel at intervals along the circumferential direction and are located above the water collecting tray.

[0013] The beneficial effects of the present invention are: it can solve the problem that there is a slit area between the grinding wheel and the external device (such as the spindle flange) and cooling water cannot be pumped into the inner cavity to cool the grinding layer. A water storage channel is opened on the grinding wheel body, and cooling water is drained from the top of the grinding wheel body to the bottom through the water storage channel. The effect of the slit water supply of the water storage channel is significantly better than the situation where no water storage channel is set, and the atomized cooling water flowing to the bottom is gathered through the water collecting tray and drained to the grinding layer under the action of centrifugal force to prevent the cooling water from directly passing through the bottom, thereby realizing the conversion from external cooling to internal cooling mode. The cooling effect is greatly improved compared with the external cooling mode, which is conducive to the implementation of a grinding process with increased rotation speed, improved work efficiency and improved quality; the blades are arranged above the water collecting tray and below the water storage area of ​​the water storage channel, which effectively reduces the proportion of atomized supply water caused by the blades, and is conducive to the water in a beam state entering the inner cavity of the end face grinding wheel.

[0014] Based on the above technical solution, the present invention can also be improved as follows.

[0015] Furthermore, the angle between the water storage channel along the outer side wall of the inner ring base and the inner side wall of the outer ring base and the water collecting tray is θ, and 0°<θ<90°.

[0016] The beneficial effect of adopting the above further scheme is that the water entering the water storage area has an axial component of force in the direction of the inner cavity of the end face mold under the action of centrifugal force, thereby increasing the flow rate and flow rate of cooling water entering the inner cavity of the end face mold.

[0017] Furthermore, the water collecting tray is detachably mounted on the bottom end of the inner ring base by means of screws.

[0018] Furthermore, the blades span between the inner ring base and the outer ring base and are fixedly connected to the inner ring base and the outer ring base at the inner and outer sides respectively.

[0019] Furthermore, the plurality of blades are all inclined from one side to the other side in the processing rotation direction, and the inclination directions and angles of the plurality of blades are the same, forming a turbine shape.

[0020] The beneficial effect of adopting the above further solution is that the multiple blades generate thrust to suck the injected cooling water into the water storage channel, thereby increasing the water storage capacity.

[0021] Furthermore, the grinding wheel body is a cup wheel or a disc wheel.

[0022] Furthermore, when the grinding wheel body is a disc-shaped wheel, the outer ring matrix includes a water retaining layer, a base layer and the grinding layer, the diameters of which gradually increase from the top to the bottom, and the water retaining layer, the base layer and the grinding layer are connected to each other via threads.

[0023] The beneficial effect of adopting the above further solution is that the outer ring matrix of the disc wheel is divided into multiple layers, which can facilitate the production and processing of the entire grinding wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a grinding wheel body provided in an embodiment of the present invention being a cup wheel;

[0025] Figure 2 A cross-sectional view of a cup wheel in which the grinding wheel body provided in an embodiment of the present invention is a cup wheel;

[0026] Figure 3 A schematic diagram of a grinding wheel body provided in an embodiment of the present invention being a disc-shaped wheel;

[0027] Figure 4 One of the cross-sectional views of the grinding wheel body provided in the embodiment of the present invention as a disc-shaped wheel

[0028] Figure 5 The second cross-sectional view of the grinding wheel body provided in the embodiment of the present invention is a disc-shaped wheel.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Grinding wheel body; 101. Grinding layer; 102. Inner ring matrix; 103. Outer ring matrix;

[0031] 2. Water storage channel;

[0032] 3. Water collection tray;

[0033] 4. Leaves;

[0034] 5. Spindle flange; 501. Connecting through hole;

[0035] 6. Screws. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] Embodiment 1:

[0038] like Figure 1-5 As shown, an outer cylindrical surface water supply grinding wheel with improved cooling rate is characterized in that it includes a grinding wheel body 1, a water storage channel 2, a water collecting tray 3 and a plurality of blades 4;

[0039] The water storage channel 2 is arranged inside the grinding wheel body 1 in a circumferential manner and extends along the axial direction of the grinding wheel body 1, dividing the grinding wheel body 1 into an inner ring base 102 and an outer ring base 103;

[0040] A connecting through hole 501 for connecting to the spindle flange 5 is provided at the center of the top of the inner ring base 102, an open area is provided at the bottom of the inner ring base 102, and the ring end surface at the bottom of the outer ring base 103 is a grinding layer 101;

[0041] The top of the outer ring substrate 103 is lower than the top of the inner ring substrate 102. A gap is provided between the top of the outer ring substrate 103 and the inner ring substrate 102 for cooling water to enter. The top of the water storage channel 2 is open and connected to the gap. The interior of the water storage channel 2 is connected from top to bottom to form a channel for guiding cooling water from the top open to the bottom of the grinding wheel body 1.

[0042] The water collecting plate 3 is an annular plate, and is coaxial with the grinding wheel body 1 and is located at the bottom end of the water storage channel 2, and one end of the water collecting plate 3 is installed at the bottom end of the inner ring base 102, and the other end of the water collecting plate 3 extends outward and leaves an annular gap between the outer ring base 103 to guide the cooling water flowing to the bottom end to the grinding layer 101;

[0043] The water storage channel 2 forms a trumpet-shaped inclined channel along the outer side wall of the inner ring base 102 and the inner side wall of the outer ring base 103;

[0044] The plurality of blades 4 are arranged in the water storage channel 2 at intervals along the circumferential direction and are located above the water collecting tray 3 .

[0045] It should be understood that the upper end portion of the water storage channel 2, that is, the upper portion of the blades, forms a water storage area.

[0046] In the above embodiment, the problem that there is a slit area between the grinding wheel and the external device (such as the spindle flange) and cooling water cannot be pumped into the inner cavity to cool the grinding layer can be solved. A water storage channel 2 is opened on the grinding wheel body 1, and the cooling water is drained from the top of the grinding wheel body 1 to the bottom through the water storage channel 2. The effect of the slit water supply of the water storage channel 2 is obviously better than the case where no water storage channel is set, and the atomized cooling water that flows to the bottom through the water collecting tray 3 is gathered and drained to the grinding layer 101 under the action of centrifugal force to prevent the cooling water from directly passing through the bottom, thereby realizing the conversion from external cooling to internal cooling mode. The cooling effect is greatly improved compared with the external cooling mode, which is conducive to the implementation of a grinding process with increased rotation speed, improved work efficiency and improved quality; the blades 4 are arranged above the water collecting tray 3 and below the water storage area of ​​the water storage channel 2, which effectively reduces the proportion of atomized water supplied by the blades, and is conducive to the water in the beam state entering the inner cavity of the end face grinding wheel.

[0047] Figure 2 or Figure 4 The arrow indicates the water inlet direction, and b indicates the gap between the top of the inner ring base 102 and the bottom of the main shaft flange 5 . Cooling water is pumped into the water storage channel 2 through the gap b.

[0048] In the above embodiment, the water storage channel 2 divides the grinding wheel body 1 into an inner ring matrix 102 and an outer ring matrix 103, that is, the water storage channel 2 is located between the inner ring matrix 102 and the outer ring matrix 103, forming a slit type water supply. Compared with the external cooling mode of the prior art, the external cooling is converted into the internal cooling mode, and the cooling effect is greatly improved compared with the external cooling mode. The setting of the water collecting tray 3 increases the amount of cooling water reaching the grinding layer 101, thereby improving the cooling rate.

[0049] Based on Example 1, Example 2:

[0050] like Figure 2 or Figure 4 As shown, the angle between the water storage channel 2 along the outer side wall of the inner ring base 102 and the inner side wall of the outer ring base 103 and the water collecting tray 3 is θ, and 0°<θ<90°.

[0051] Preferably, θ is 45°

[0052] In the above embodiment, the water entering the water storage area has an axial force component in the direction of the inner cavity of the end face mold under the action of centrifugal force, thereby increasing the flow rate and flow rate of cooling water entering the inner cavity of the end face mold.

[0053] Based on Example 1, Example 3:

[0054] The water collecting tray 3 is detachably mounted on the bottom end of the inner ring base 102 by means of screws 6 .

[0055] Specifically, a screw hole is opened at the bottom end of the inner ring base 102 and a screw hole is also opened on the water collecting tray 3 . The screw 6 passes through the screw hole on the water collecting tray 3 from bottom to top and is threadedly connected with the screw hole of the inner ring base 102 .

[0056] In the above embodiment, the water collecting tray 3 can be quickly installed on the inner ring base 102 .

[0057] Based on Example 2, Example 4:

[0058] The blade 4 spans between the inner ring base 102 and the outer ring base 103 and is fixedly connected to the inner ring base 102 and the outer ring base 103 at the inner and outer sides thereof.

[0059] Specifically, the blades 4 are integrally formed with the inner ring base 102 and the outer ring base 103 through a welding process.

[0060] Specifically, the plurality of blades 4 are all inclined from one side to the other side in the machining rotation direction, and the inclination directions and angles of the plurality of blades 4 are the same, forming a turbine shape.

[0061] In the above embodiment, the plurality of blades generate thrust to draw the injected cooling water into the water storage channel 2, thereby increasing the water storage capacity.

[0062] Based on Examples 1 to 4, Example 5:

[0063] The grinding wheel body 1 is a cup wheel or a disc wheel.

[0064] Specifically, the grinding wheel body 1 is a disc-shaped wheel, the outer ring matrix 103 includes a water-retaining layer, a base layer and the grinding layer 101 with diameters gradually increasing from the top to the bottom, and the water-retaining layer, the base layer and the grinding layer 101 are connected to each other via threads.

[0065] Specifically, the bottom end of the water retaining layer, the top and bottom end of the base layer and the top end of the grinding layer 101 are provided with interconnected large-diameter threads, and the water retaining layer, the base layer and the grinding layer 101 are connected as a whole through a large-diameter thread process.

[0066] Dividing the outer ring substrate 103 of the disc wheel into multiple layers can facilitate the production and processing of the entire grinding wheel.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An outer cylindrical surface water supply grinding wheel with improved cooling rate, characterized in that: It comprises a grinding wheel body (1), a water storage channel (2), a water collecting tray (3) and a plurality of blades (4); The water storage channel (2) is arranged around the grinding wheel body (1) and extends along the axial direction of the grinding wheel body (1), dividing the grinding wheel body (1) into an inner ring base (102) and an outer ring base (103); A connecting through hole (501) for connecting to the spindle flange (5) is provided at the center of the top end of the inner ring base (102); an open area is provided at the bottom end of the inner ring base (102); and the ring end surface at the bottom end of the outer ring base (103) is a grinding layer (101); The top of the outer ring substrate (103) is lower than the top of the inner ring substrate (102); a gap is provided between the top of the outer ring substrate (103) and the inner ring substrate (102) for cooling water to enter; the top of the water storage channel (2) is open and communicates with the gap; the interior of the water storage channel (2) is connected from top to bottom to form a channel for guiding cooling water from the open top to the bottom of the grinding wheel body (1); The water collecting plate (3) is an annular plate, the water collecting plate (3) is coaxial with the grinding wheel body (1) and is located at the bottom end of the water storage channel (2), and one end of the water collecting plate (3) is installed at the bottom end of the inner ring base (102), and the other end of the water collecting plate (3) extends outward and leaves an annular gap between the water collecting plate (3) and the outer ring base (103) for guiding the cooling water flowing to the bottom end to the grinding layer (101); The water storage channel (2) forms a trumpet-shaped inclined channel along the outer side wall of the inner ring base (102) and the inner side wall of the outer ring base (103); A plurality of blades (4) are arranged at intervals along the circumferential direction in the water storage channel (2) and are located above the water collection tray (3).

2. The outer cylindrical surface water supply grinding wheel according to claim 1, characterized in that: The angle between the water storage channel (2) along the outer side wall of the inner ring base (102) and the inner side wall of the outer ring base (103) and the water collecting tray (3) is θ, wherein 0°<θ<90°.

3. The outer cylindrical surface water supply grinding wheel according to claim 2, characterized in that: The blade (4) spans between the inner ring base (102) and the outer ring base (103) and is fixedly connected to the inner ring base (102) and the outer ring base (103) at the inner and outer sides respectively.

4. The outer cylindrical surface water supply grinding wheel according to claim 3, characterized in that: The plurality of blades (4) are all inclined from one side to the other side in the processing rotation direction, and the inclination direction and angle of the plurality of blades (4) are the same, forming a turbine shape.

5. The outer cylindrical surface water supply grinding wheel according to claim 1, characterized in that: The water collecting tray (3) is detachably mounted on the bottom end of the inner ring base (102) by means of screws (6).

6. The outer cylindrical surface water supply grinding wheel according to any one of claims 1 to 5, characterized in that: The grinding wheel body (1) is a cup wheel or a disc wheel.

7. The outer cylindrical surface water supply grinding wheel according to claim 6, characterized in that: The grinding wheel body (1) is a disc-shaped wheel, and the outer ring base (103) comprises a water-retaining layer, a base layer and the grinding layer (101) whose diameters gradually increase from the top to the bottom, and the water-retaining layer, the base layer and the grinding layer (101) are connected to each other via threads.

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