阅读说明：本技术 一种高速杯形砂轮冷却结构及杯形砂轮 (High-speed cup-shaped grinding wheel cooling structure and cup-shaped grinding wheel ) 是由 宋京新 梁安宁 叶勇 龙慧玲 杜海 秦凤明 王志勇 赵亮 于 2020-05-15 设计创作，主要内容包括：本发明涉及一种高速杯形砂轮冷却结构及杯形砂轮,包括水流压缩盘,水流压缩盘设置在杯形砂轮的敞口区域内且可拆卸连接,水流压缩盘包括分流盘、多个叶轮片和进水孔,分流盘的外边缘延伸至杯形砂轮的侧壁和底面的交汇处,且倾斜设置,形成环形倾斜面结构,分流盘与杯形砂轮的内壁之间留有缝隙,多个叶轮片周向且间隔的分布在分流盘的同一侧面上,且位于分流盘与杯形砂轮底面之间,多个叶轮片之间周向的形成多个汇流通道。杯形砂轮在高速旋转的过程中,水流压缩盘的分流盘和多个叶轮片使射入的冷却水束迅速贴向砂轮内壁,能够对杯形砂轮内的冷却水加压和加速,防止冷却水离散、失效,从而保证加工过程中的全面冷却。(The invention relates to a high-speed cup-shaped grinding wheel cooling structure and a cup-shaped grinding wheel, which comprise a water flow compression disc, wherein the water flow compression disc is arranged in an open area of the cup-shaped grinding wheel and is detachably connected with the open area of the cup-shaped grinding wheel, the water flow compression disc comprises a flow distribution disc, a plurality of impeller blades and a water inlet hole, the outer edge of the flow distribution disc extends to the intersection of the side wall and the bottom surface of the cup-shaped grinding wheel and is obliquely arranged to form an annular inclined plane structure, a gap is reserved between the flow distribution disc and the inner wall of the cup-shaped grinding wheel, the impeller blades are circumferentially and alternately distributed on the same side surface of the flow distribution disc and are positioned between the flow distribution disc and the bottom. In the process of high-speed rotation of the cup-shaped grinding wheel, the flow distribution disc of the water flow compression disc and the impeller blades enable the injected cooling water beams to be quickly attached to the inner wall of the grinding wheel, so that the cooling water in the cup-shaped grinding wheel can be pressurized and accelerated, the cooling water is prevented from dispersing and losing efficacy, and the comprehensive cooling in the machining process is guaranteed.)

1. A high-speed cup-shaped grinding wheel cooling structure comprises a cup-shaped grinding wheel (1), wherein an open area is formed in the middle of the cup-shaped grinding wheel (1), an equipment hole used for being connected with external equipment is formed in the center of the bottom surface of the cup-shaped grinding wheel, the annular end surface of the periphery of the cup-shaped grinding wheel (1) is a grinding surface, the high-speed cup-shaped grinding wheel cooling structure is characterized by further comprising a water flow compression disc (2), the water flow compression disc (2) is arranged in the open area of the cup-shaped grinding wheel (1) and is detachably connected with the bottom surface of the cup-shaped grinding wheel (1), the water flow compression disc (2) comprises a splitter disc (201), a plurality of impeller blades (202) and a water inlet hole (203) used for allowing cooling water to enter the cup-shaped grinding wheel (1), the outer edge of the splitter disc (201) extends to the intersection of the side wall and the bottom surface of the cup-shaped grinding wheel (1), the direction from the water inlet hole (203) to the junction of the side wall and the bottom surface of the cup-shaped grinding wheel of the diverter disc (201) is obliquely arranged to form an annular inclined surface structure, and gaps for cooling water to flow are reserved between the outer edge of the diverter disc (201) and the side wall and the bottom surface of the cup-shaped grinding wheel (1); the impeller blades (202) are positioned between the diverter plate (201) and the bottom surface of the cup-shaped grinding wheel (1) and are arranged on the diverter plate (201) at intervals along the circumferential direction, and the impeller blades (202) divide the gap into a plurality of confluence channels.

2. A high-speed cup wheel cooling arrangement as claimed in claim 1, wherein the impeller blades (202) each extend radially from the inlet opening (203) in the direction of the outer edge of the diverter disc (201) and are formed integrally with the diverter disc (201).

3. A high-speed cup wheel cooling configuration as claimed in claim 2, wherein none of the extended lines of the plurality of impeller blades (202) passes through the center of the diverter disc (201) to form an eddy.

4. A high-speed cup wheel cooling arrangement as claimed in claim 1, further comprising an air flow baffle (204), said air flow baffle (204) being circumferentially disposed at an outer edge of an upper surface of said diverter disc (201), said air flow baffle (204) and an inner wall of said cup wheel (1) forming an air flow isolation path therebetween for isolating air flow.

5. A high-speed cup wheel cooling arrangement according to claim 4, wherein the gas flow retainer ring (204) extends parallel to and from the side wall of the cup wheel (1) towards the bottom surface.

6. A high speed cup wheel cooling arrangement as claimed in claim 4, wherein the gas flow retainer ring (204) is inclined from the outside to the inside in a direction towards the underside along the side wall of the cup wheel (1).

7. The cooling structure for the high-speed cup-shaped grinding wheel according to claim 1, further comprising a circular connecting disc (3), wherein a connecting hole for connecting external equipment is formed in the center of the circular connecting disc, the connecting hole is coaxially arranged with the equipment hole, the bottom surfaces of the impeller blades (202) are provided with notches, each notch extends outwards from the inner side wall of the impeller blade (202) to a position close to the outer side wall and forms a circular groove body along the circumferential direction, and the connecting disc (3) is placed in the circular groove body.

8. A high-speed cup wheel cooling structure according to claim 6, further comprising a spindle screw (4), said spindle screw (4) penetrating a connection hole of said connection plate (3) and an equipment hole of said cup wheel (1) in this order and being screw-connected with a spindle (7) of an external equipment.

9. A high-speed cup wheel cooling structure according to any one of claims 1 to 8, further comprising an impeller attachment screw (5), wherein a threaded hole is provided through the diverter plate (201) corresponding to the impeller blade (202), a screw groove is provided on the cup wheel (1) corresponding to the threaded hole, an internal thread is provided in the screw groove, and the impeller attachment screw (5) is provided through the threaded hole and threadedly engaged with the screw groove to integrally connect the cup wheel (1) and the water flow compression plate (2).

10. A high speed cup wheel, characterized by comprising a cup wheel and a water flow compression disc (2) according to claims 1-9.

Technical Field

The invention relates to the technical field of grinding wheel tools, in particular to a high-speed cup-shaped grinding wheel cooling structure and a cup-shaped grinding wheel.

Background

As shown in fig. 1-2, a current cup wheel 1 is provided with a flow dividing cover 101, and fig. 2 shows a flow schematic of cooling water, which is injected from an inlet of the cup wheel 1, and due to the high speed rotation of the cup wheel 1, an "air flow barrier" is formed around the inner and outer walls and the end face of the cup wheel 1, which forms a "weak area of the air flow barrier" at the intersection of the bottom face and the inner wall of the cup wheel 1, and a "male area of the air flow barrier" at the end area of the cup wheel. Cooling water sprayed to the inner wall of the cup-shaped grinding wheel through the water outlet of the flow dividing cover is atomized by airflow when a part of the cooling water passes through the airflow barrier; part of cooling water is sprayed on the inner wall of the grinding wheel to be scattered by air flow, and under the action of scattering of an air flow barrier and atomization, part of cooling water is scattered and loses efficacy, so that the quantity of the cooling water entering the grinding surface of the cup-shaped grinding wheel is greatly reduced, the water supply of the grinding surface is insufficient, and the comprehensive cooling in the machining process cannot be ensured.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a high-speed cup-shaped grinding wheel cooling structure and a cup-shaped grinding wheel.

The technical scheme for solving the technical problems is as follows: a high-speed cup-shaped grinding wheel cooling structure comprises a cup-shaped grinding wheel, wherein an open area is formed in the middle of the cup-shaped grinding wheel, an equipment hole used for being connected with external equipment is formed in the center of the bottom surface of the cup-shaped grinding wheel, the annular end face of the periphery of the cup-shaped grinding wheel is a grinding face, the cup-shaped grinding wheel further comprises a water flow compression disc, the water flow compression disc is arranged in the open area of the cup-shaped grinding wheel and is detachably connected with the bottom surface of the cup-shaped grinding wheel, the water flow compression disc comprises a splitter disc, a plurality of impeller blades and a water inlet hole used for allowing cooling water to enter the cup-shaped grinding wheel, the outer edge of the splitter disc extends to the junction between the side wall and the bottom surface of the cup-shaped grinding wheel, the water inlet hole coaxial with the equipment hole is formed in the center of the splitter disc, the splitter disc is obliquely arranged from the, gaps for cooling water to flow are reserved between the outer edge of the flow distribution disc and the side wall and the bottom surface of the cup-shaped grinding wheel; the impeller blades are positioned between the splitter plate and the bottom surface of the cup-shaped grinding wheel and are arranged on the splitter plate at intervals along the circumferential direction, and the impeller blades divide the gap into a plurality of confluence channels.

Furthermore, an airflow retainer ring can be arranged on the outer circumference of the flow distribution disc, and the airflow retainer ring and the inner wall of the grinding wheel form an airflow isolation channel.

Another technical solution of the present invention for solving the above technical problems is as follows: a high speed cup wheel comprising a cup wheel and a water flow compression disc as described above.

The invention has the beneficial effects that: in the process of high-speed rotation of the cup-shaped grinding wheel, the flow distribution disc of the water flow compression disc and the impeller blades enable the supplied cooling water beams to be quickly attached to the inner wall of the grinding wheel, the cooling water in the cup-shaped grinding wheel can be pressurized and accelerated, the cooling water beams can conveniently pass through an air flow barrier area through an air flow barrier weak area, meanwhile, splashing of the cooling water beams to impact the inner wall is reduced, the influence of air flow on the cooling water of an air flow isolation channel is reduced by the air flow retaining ring, the cooling water is prevented from being scattered and losing efficacy, the amount of the cooling water entering the grinding surface of the cup-shaped grinding wheel is greatly increased, and therefore comprehensive cooling in the machining process is guaranteed.

Drawings

FIG. 1 is a schematic diagram of a prior art cup wheel and diverter housing according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of cooling water flow within a prior art cup wheel provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a cooling structure provided in an embodiment of the present invention;

FIG. 4 is a plan cross-sectional view of a cooling structure without lands provided by an embodiment of the present invention;

FIG. 5 is a perspective cross-sectional view of a cooling structure without a connecting disc according to an embodiment of the present invention;

FIG. 6 is a plan sectional view of a cooling structure with connecting discs according to an embodiment of the present invention;

fig. 7 is a perspective cross-sectional view of a cooling structure with a connecting disc according to an embodiment of the present invention;

FIG. 8 is a distribution diagram of impeller blades without a center of a circle according to an embodiment of the present invention;

FIG. 9 is a top view of an impeller blade without a center of a circle according to an embodiment of the present invention;

FIG. 10 is a top view of an over-center impeller blade provided in accordance with an embodiment of the present invention;

FIG. 11 is a side view of an impeller blade provided in accordance with an embodiment of the present invention;

fig. 12 is a schematic view of the flow of cooling water in the cooling structure according to the embodiment of the present invention.

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

1. the device comprises a cup-shaped grinding wheel, 2, a water flow compression disc, 3, a connecting disc, 4, a spindle screw, 5, an impeller connecting screw, 6, a connecting disc connecting screw, 7, a spindle, 101, a flow dividing cover, 201, a flow dividing disc, 202, an impeller blade, 203, a water inlet hole, 204, an air flow retaining ring, A, an air flow barrier weak area, B, an air flow barrier, C and an air flow isolation channel.

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.

As shown in fig. 3 to 5, a high-speed cup grinding wheel cooling structure comprises a cup grinding wheel 1, wherein an open area is formed in the middle of the cup grinding wheel 1, an equipment hole for connecting external equipment is formed in the center of the bottom surface of the cup grinding wheel 1, the annular end surface of the outer periphery of the cup grinding wheel 1 is a grinding surface, the cup grinding wheel further comprises a water flow compression disc 2, the water flow compression disc 2 is arranged in the open area of the cup grinding wheel 1 and is detachably connected with the bottom surface of the cup grinding wheel 1, the water flow compression disc 2 comprises a splitter disc 201, a plurality of impeller blades 202 and a water inlet hole 203 for allowing cooling water to enter the cup grinding wheel 1, the outer edge of the splitter disc 201 extends to the ' junction ' of the side wall and the bottom surface of the cup grinding wheel 1 ', the water inlet hole 203 coaxial with the equipment hole is formed in the center of the splitter disc 201, the splitter disc is arranged in an inclined manner from the water inlet hole to the ' junction ' of the, forming an annular inclined plane structure, and reserving gaps for cooling water to flow between the outer edge of the diverter disc 201 and the side wall and the bottom surface of the cup-shaped grinding wheel 1; the impeller blades 202 are positioned between the diverter plate 201 and the bottom surface of the cup wheel 1 and are arranged on the diverter plate 201 at intervals along the circumferential direction, and the impeller blades 202 divide the gap into a plurality of confluence passages.

It will be appreciated that the outer edge of the diverter disc 201 is closer to the bottom surface of the cup wheel 1 than the inner edge.

It should be understood that the gap between the cup-shaped grinding wheel base body and the cup-shaped grinding wheel base body forms a confluence channel, also called confluence action zone, the confluence action zone contains flowing water and water drops, when the flowing water and the water drops pass through the confluence action zone and reach the confluence channel, a large amount of water drops are gathered into water flow, and the water flow is acted by centrifugal force to form water beams (beam flow), wherein the water beams refer to water flowing along the inner wall.

In the above embodiment, as shown in fig. 12, during the high-speed rotation of the cup-shaped grinding wheel, the flow distribution plate and the plurality of impeller blades of the water flow compression plate make the supplied cooling water beam quickly adhere to the inner wall of the grinding wheel, so as to pressurize and accelerate the cooling water in the cup-shaped grinding wheel, and facilitate the cooling water beam to pass through the air flow barrier region through the air flow barrier weak region, and simultaneously reduce the splashing of the cooling water beam striking the inner wall, and the air flow retainer ring reduces the influence of the air flow on the cooling water in the air flow isolation channel, prevents the cooling water from dispersing and losing efficacy, and greatly increases the amount of the cooling water entering the grinding surface of the cup-shaped grinding wheel, thereby ensuring the overall cooling in the machining process.

Alternatively, as an embodiment of the present invention, as shown in fig. 8 and 11, the impeller blades 202 extend radially from the water inlet 203 to the outer edge of the diverter tray 201, and are integrally formed with the diverter tray 201.

In the above embodiment, the impeller blades 202 are arranged on the confluence disc body, when the cup wheel rotates, the impeller blades 202 change the direction of the cooling water, the cooling water is pushed to the inner wall of the grinding wheel from the water inlet 203, the cooling water pushed to the inner wall can be effectively acted by centrifugal force, the cooling water attached to the inner wall carries out cooling action on the grinding surface along the inner wall or through the water tank, water supply from the inner diameter direction to the outer diameter direction of the cup wheel is realized, and the comprehensive cooling of the grinding surface is ensured.

Alternatively, as an embodiment of the present invention, as shown in fig. 9, no extension line of the plurality of impeller blades 202 passes through the center of the flow distribution plate 201, forming a vortex shape.

The other situation is as follows: as shown in fig. 10, the extension lines of the impeller blades 202 all pass through the center of the splitter plate 201 to form a star shape.

The beneficial effect of adopting the further scheme is that: the vortex-shaped impeller blades and the star-shaped impeller blades push cooling water, so that the obstruction of an airflow barrier is broken, the inner wall of the cup-shaped wheel is effectively attached, and the efficiency of the cooling water is improved.

Optionally, as an embodiment of the present invention, the cup grinding wheel further includes an airflow baffle 204, the airflow baffle 204 is disposed around an outer edge of the upper surface of the diverter tray 201, and an airflow isolation channel for isolating airflow is formed between the airflow baffle 204 and the inner wall of the cup grinding wheel 1.

Alternatively, as shown in fig. 6, the air flow retainer 204 is parallel to the side wall of the cup wheel 1 and extends from the side wall toward the bottom surface.

Alternatively, as an embodiment of the present invention, as shown in fig. 12, the air flow retainer 204 is inclined from the outside to the inside in the direction from the side wall to the bottom surface of the cup wheel 1.

Specifically, the air flow retainer 204 may be disposed parallel to the inner wall of the cup wheel 1 or may be disposed obliquely.

In the above embodiment, as shown in fig. 4 and 12, the airflow retainer 204 can separate the "airflow separation passage (shown as C in fig. 12)" and form the cooling water into a water jet, and the water jet is moved against the inner wall of the grinding wheel by the centrifugal force to prevent the cooling water from scattering and failing.

Alternatively, as an embodiment of the present invention, as shown in fig. 6 to 7, a circular connecting plate 3 is further included, a connecting hole for connecting an external device is formed in the center of the connecting plate, the connecting hole is coaxially arranged with the device hole, a notch is formed in the bottom surface of the impeller blades 202, each notch extends outwards from the inner side wall of the impeller blade 202 to a position close to the outer side wall, and a circular groove is formed along the circumferential direction, and the connecting plate 3 is placed in the circular groove.

In the above embodiment, the coupling disk 3 can reinforce the coupling between the cup wheel 1 and the water flow compression disk 2 to prevent the cup wheel from coming off.

Optionally, as an embodiment of the present invention, as shown in fig. 6, the present invention further includes a spindle screw 4, and the spindle screw 4 sequentially penetrates through the connection hole of the connection disc 3 and the device hole of the cup wheel 1 and is screwed with a spindle 7 of an external device.

Specifically, as shown in fig. 4, another connection mode is that, instead of using the connection disc 3, a washer 8 is used instead of the connection disc 3, and the spindle screw 4 penetrates through the washer 8 and the device hole of the cup-shaped grinding wheel 1 in sequence and is connected with the spindle 7 of the external device in a threaded manner.

It will be appreciated that, by means of a gasket, no notch is provided in the impeller blades 202, said impeller blades 202 resting against the bottom surface of said cup wheel 1.

In the above embodiment, the connection plate 3 and the cup wheel can be quickly and firmly connected to the spindle 7 of the external device.

Optionally, as an embodiment of the present invention, an impeller connecting screw 5 is further included, and the water flow compression disk 2 is detachably connected to the cup-shaped grinding wheel 1 through the impeller connecting screw 5.

Specifically, when the land 3 is not provided, the connection manner is: the impeller blades 202 abut against the bottom surface of the cup-shaped grinding wheel 1, the splitter disc 201 is provided with through screw holes corresponding to the impeller blades 202, screw grooves corresponding to the screw holes are formed in the cup-shaped grinding wheel 1, internal threads are arranged in the screw grooves, and impeller connecting screws 5 penetrate through the screw holes and are in threaded connection with the screw grooves to connect the cup-shaped grinding wheel 1 and the water flow compression disc 2 into a whole. The impeller connecting screw 5 can be provided in a plurality of numbers, and a plurality of impeller blades 202 distributed in the impeller connecting screw are arranged around the circumference.

Specifically, when the connection disc 3 is provided, the cooling structure further comprises a connection disc connection screw, and the connection mode is as follows: the connecting disc 3 is provided with a screw hole, the impeller blade 202 is provided with a screw groove, and the connecting disc connecting screw penetrates through the screw hole of the connecting disc 3 and is in threaded connection with the screw groove, so that the connecting disc 3 and the impeller blade 202 are connected into a whole. The connecting disc connecting screw may be provided in plurality, around a circumference, at a plurality of impeller blades 202 distributed therein.

Specifically, the impeller blades 202 provided with the screw grooves are thicker than the impeller blades 202 not provided with the screw grooves, and the impeller blades 202 provided with the screw grooves can be prevented from being broken.

In the above embodiment, the components can be prevented from coming off when the grinding wheel is rotated at high speed.

Alternatively, as another embodiment of the invention, a high speed cup wheel includes a cup wheel and a water flow compression disc 2 as described above.

As shown in fig. 12, the water flow compression disc 2 of the present invention replaces the diversion cover 101 provided in the conventional cup wheel 1, and in the super high speed rotation of the cup wheel 1, there is a greater significance than the diversion cover 101 in the improvement of the working condition of the grinding surface:

the cooling water can be forced to advance: the impeller 202 of the water flow compression disc 2 is in a star-shaped or vortex shape, and the cooling water is strongly pushed to the inner wall of the cup-shaped grinding wheel 1 at the position with the weakest air flow barrier, and is attached to the inner wall, so that the cooling water is maximally acted on the grinding surface along the inner wall or the water through groove by virtue of centrifugal force (minimally influenced by air flow).

The effect of reducing the airflow barrier can be reduced: in the conventional mode of water supply, the air flow barrier has the strongest effect at the place where the cooling water is located, namely the defects that the effective rate of the cooling water is reduced and the influence is the greatest are caused; the water flow compression disc 2 can break the bottleneck, cooling water is input into an area which is beneficial to cooling of the cup-shaped grinding wheel 1 in a weak area (shown as A in figure 12) of the air flow barrier, the air flow retainer ring reduces the influence of air flow on the cooling water of the air flow isolation channel, so that the cooling water in a flow state is bundled, the cooling water is attached to the inner wall and acts on the grinding area from inside to outside under the assistance of centrifugal force, the cooling water is prevented from being dispersed and losing efficacy, and the cooling effect is stronger.

Can improve cooling water utilization ratio: the cooling water in the traditional cup-shaped grinding wheel 1 is sprayed, and the proportion of atomized cooling water is higher; and the clearance between the water flow compression disc 2 and the cup-shaped grinding wheel 1 forms a converging channel, so that the flow path of cooling water is changed, the cooling water is in a beam state, the atomized proportion is lower, and the utilization rate of the cooling water is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.