CN110480506B - Internal cooling grooving grinding wheel device for forming grinding - Google Patents
Internal cooling grooving grinding wheel device for forming grinding Download PDFInfo
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- CN110480506B CN110480506B CN201910681493.2A CN201910681493A CN110480506B CN 110480506 B CN110480506 B CN 110480506B CN 201910681493 A CN201910681493 A CN 201910681493A CN 110480506 B CN110480506 B CN 110480506B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/16—Bushings; Mountings
Abstract
An internal cooling slotting grinding wheel device for forming grinding comprises a main shaft and a grinding wheel assembly; the lower end of the main shaft is connected with the upper base body and the lower base body of the grinding wheel through bolts. The lower end of the main shaft is provided with threads, and the clamping nut fastens the upper matrix and the lower matrix of the grinding wheel on the main shaft; the lower end face of the main shaft is provided with a cooling liquid inlet which is connected with a cooling liquid inlet pipe through a pneumatic rotary joint; the upper grinding wheel base body and the lower grinding wheel base body are connected through bolts, and channels for placing cooling liquid passages are arranged in the upper grinding wheel base body and the lower grinding wheel base body; the branched channels are a plurality of groups of arc branched channels which are uniformly arranged around the axis, the inlets of the arc branched channels are communicated with the liquid storage cavity, the outlets of the arc branched channels point to the grinding area on the outer circumferential surface of the grinding wheel, and the cooling liquid flies out of the grinding area at high speed to wash the workpiece; the centrifugal force generated when the grinding wheel rotates is utilized, so that the cooling liquid is sprayed to the grinding arc area from the outlets of the channels in a high-speed and high-pressure state, the temperature of the grinding arc area is greatly reduced, and the processing quality of the workpiece is remarkably improved.
Description
Technical Field
The invention belongs to the technical field of grinding tools, and particularly relates to an internal cooling grooving grinding wheel device for forming grinding.
Background
The relevant data show that the grinding represents 30% of the total machining. Form grinding is a method widely applied in machining and manufacturing, and in grinding, the cutting motion of a grinding wheel and a workpiece generates a large amount of grinding heat in a grinding area, so that the temperature of the grinding area is rapidly increased. The temperature rise of the grinding area not only can cause burning and grinding cracks on the machined surface of the part, but also can reduce the strength of abrasive grains of the grinding wheel and accelerate the abrasion of the grinding wheel. If the temperature of the grinding area cannot be effectively reduced, the surface quality of the gear and the service life of the grinding wheel can be seriously influenced. Control of the grinding temperature during grinding is therefore important. The liquid supply mode of the grinding liquid is improved, the cooling effect is enhanced, the grinding temperature can be effectively reduced, and the grinding quality is improved. The forming and grinding process generally adopts a spray cooling mode, the mode has the characteristics of simple structure, large cooling liquid amount and the like, but due to the sealing of a grinding area and external air flow generated by a grinding wheel rotating at high speed, external cooling liquid can hardly enter the grinding area fully, and the cooling effect of the cooling liquid is poor. With the continuous progress of cooling technology and manufacturing technology, internal cooling is gradually applied to grinding. Compare and spray the cooling method, adopt inside refrigerated mode can fully act on the grinding region with the coolant liquid, can effectual reduction grinding region's temperature, guarantee the processingquality of part.
The cooling liquid channel structure of the internal cooling grinding wheel influences the jet cooling effect of the cooling liquid.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an internal cooling grooved grinding wheel device for forming grinding, which solves the problem that the excessive grinding zone temperature influences the quality of the machined surface of a part during forming grinding, and further improves the grinding quality of the workpiece.
In order to achieve the above object, the invention adopts the technical scheme that:
an internal cooling slotting grinding wheel device for forming grinding comprises a main shaft and a rotating assembly, wherein the lower end of the main shaft is connected with an upper grinding wheel base body and a lower grinding wheel base body; the lower end of the main shaft is provided with threads, and the grinding wheel upper matrix and the grinding wheel lower matrix are fastened on the main shaft through clamping nuts; when the main shaft rotates at a high speed, the grinding wheel assembly is driven to rotate at the high speed together; a cooling liquid inlet is formed in the lower end face of the main shaft and is connected with a cooling liquid inlet pipe through a pneumatic rotary joint;
the grinding wheel component comprises an upper grinding wheel base body, a grinding block, a lower grinding wheel base body, a liquid storage cavity and a wing-shaped arc-shaped branched channel; the upper grinding wheel base body is connected with the lower grinding wheel base body through a connecting bolt; a stop gasket is arranged between the bolt and the upper matrix and the lower matrix of the grinding wheel, and the upper matrix and the lower matrix of the grinding wheel are locked by a clamping nut; annular liquid storage cavities and a plurality of branched channels communicated with the liquid storage cavities are embedded in the upper matrix and the lower matrix of the grinding wheel, and the branched channels form cooling liquid channels.
A cooling liquid inlet is formed in the inner diameter of the grinding wheel and communicated with the liquid storage cavity; the grinding area of the outer circumferential surface of the grinding wheel is provided with an outlet of the channel; the section of the channel along the circumferential tangential direction of the grinding wheel is rectangular; the height of the liquid storage cavity is greater than that of the wing-shaped arc-shaped branched channel;
the liquid storage cavity is an annular channel, one side close to the inner diameter of the grinding wheel is provided with a cooling liquid inlet, and the other side is connected with the inlet of each group of wing-shaped arc-shaped branched channels;
the branched channels with the same inlet are a channel group, and a plurality of channel groups are arranged around the axis of the grinding wheel in an annular array.
Each channel group is branched n times, and n is more than or equal to 1.
The number of the channel groups is N epsilon [8, 20 ].
The number of the channel groups is 10.
And each channel group is provided with n +1 outlets, and the grinding surface between the outlets of the adjacent channel groups is adhered with the grinding block.
The radian of the arc of the branched channel can be changed according to the difference of the diameter of the grinding wheel and the number of the channel groups; in principle, the included angle between the flow velocity vector direction at the outlet of the cold channel in the grinding wheel and the relative motion direction of the grinding surface is as follows: the included angle is more than or equal to 5 degrees and less than or equal to 15 degrees.
The abrasive particle blocks are respectively adhered to the grinding end surfaces of the grinding wheel upper base body and the grinding wheel lower base body through ceramic binders.
The annular liquid storage cavity is connected with the wing-shaped arc-shaped branched channel through a groove.
The inside of emery wheel is equipped with the coolant liquid passageway that a plurality of groups wing form arc branching passageway constitutes, and annular stock solution chamber and the emery wheel outer peripheral surface grinding district of emery wheel are equipped with the entry and the export of coolant liquid respectively. The channels with the same initial inlet are a channel group; each group of flow channels comprises a flow channel inlet and a plurality of flow channel outlets, the flow channel inlets are connected with the annular liquid storage cavity of the grinding wheel, and the flow channel outlets are positioned on the grinding area of the outer circumferential surface of the grinding wheel.
The internal cooling grooving grinding wheel utilizes an external pressurizing device to inject cooling liquid into an internal liquid storage cavity of the grinding wheel in a high-pressure mode, and the cooling liquid is directly sprayed to a grinding arc area from a micro-channel in a high-speed and high-pressure state through external pressure, self gravity and centrifugal force generated when the grinding wheel rotates at a high speed, so that the temperature of the grinding arc area is reduced, and the processing quality of a workpiece is improved.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention designs the internal cooling channel structure of the grinding wheel by using an efficient transportation conduit system of animals and plants in nature. By utilizing the characteristic of 'quasi-self-similarity', the useful geometric characteristics in the biological microtube system are applied to the structure of the internal cooling grooved grinding wheel channel so as to improve the cooling efficiency of the internal cooling grooved grinding wheel. In nature, the veins of the wings of the insect (as shown in fig. 4) and the veins of the leaves (as shown in fig. 5) are all natural micro-channel structures with good heat dissipation and transportation characteristics. The invention designs the internal cooling channel structure of the grinding wheel by using a vein distribution network (as shown in figure 4) of the front wing of the lepidoptera, which is the largest lepidoptera in insects. In order to improve the heat exchange effect of the cooling liquid, the channel presents a certain bending radian along the flow direction, so that the included angle between the flow direction of the cooling liquid at the outlet of the channel and the relative movement direction of the workpiece is as small as possible. The jet impact speed of the cooling liquid is improved by continuously reducing the cross section of the channel, the cooling liquid is efficiently utilized, and the enhanced heat exchange of a grinding area is increased; in addition, the outlet quantity of the channel group is several times more than that of the conventional parallel channels, so that the cooling liquid can be output at high frequency to continuously flush the grinding arc area, the influence of overhigh temperature on the surface quality of the gear is avoided, the quality of intermittent grinding is improved, the strength of the grinding wheel is improved, and the service life of the grinding wheel is prolonged.
The invention provides an internal cooling grinding wheel for gear forming and grinding, which adopts a plurality of groups of arc-shaped branched channels to form a cooling liquid passage. The internal cooling channel is branched along the flowing direction of the cooling liquid, and one flow channel group is provided with a plurality of cooling liquid outlets. The branched channels are arc branched channels distributed around the shaft center, the inlets of the arc branched channels are communicated with the liquid storage cavity, the outlets of the arc branched channels point to the grinding area on the outer circumferential surface of the grinding wheel, and the cooling liquid flies out of the grinding area at high speed to wash the workpiece. The whole structure utilizes the centrifugal force generated when the grinding wheel rotates, so that the cooling liquid is sprayed to the grinding arc area from the outlets of the channels in a high-speed and high-pressure state, the temperature of the grinding arc area is greatly reduced, and the processing quality of the workpiece is remarkably improved.
Compared with the conventional internal cooling grinding wheel, the internal cooling channel of the grinding wheel has a certain bending radian along the flow direction, so that the included angle between the flow direction of the cooling liquid at the outlet of the channel and the relative movement direction of the workpiece is as small as possible, and the cooling efficiency of the cooling liquid is improved; in addition, the number of the channel outlets is multiplied, and the pressure and the flow speed of the cooling liquid at the outlets are obviously improved. In the grinding process of the grinding wheel, the high-speed and high-pressure cooling liquid can be sprayed and washed away from the micro-channel as continuously as possible, so that the temperature of a grinding arc area can be effectively reduced, and the processing quality of the workpiece is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a full sectional view of the overall structure of the present invention.
FIG. 3(a) is a schematic structural view of the internally cooled bifurcated passage of the grinding wheel of the present invention.
FIG. 3(b) is a 3D printed physical diagram of the internal cooling channel of the grinding wheel internal cooling bifurcated channel
FIG. 4 is a wing vein diagram of insect wings, which is a high efficiency delivery conduit system for animals and plants in nature by which the present invention is used.
FIG. 5 is a leaf vein map of oak leaves, a high efficiency transport conduit system for natural animals and plants, according to the present invention.
Fig. 6(a) is a graph showing the influence of the grinding feed amount of the grinding wheel on the grinding temperature under three grinding conditions.
FIG. 6(b) is a graph showing the influence of the rotational speed of the grinding wheel on the grinding temperature in the comparative example under three grinding conditions.
FIG. 6(c) is a graph showing the effect of inlet pressure on grinding temperature.
Fig. 7 shows a structure of a finned curved bifurcated coolant channel in which a secondary channel is added in embodiment 2 of the present application.
In the figure: 1-a main shaft, 2-a connecting bolt, 3-an upper substrate, 4-a grinding block, 5-a lower substrate, 6-a stop gasket, 7-a clamping nut, 8-a pneumatic rotary joint, 9-a cooling liquid inlet pipe, 10-a cooling liquid inlet, 11-a liquid storage cavity, 12-a sealing ring and 13-a branched channel;
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description and accompanying drawings.
Example 1
As shown in fig. 1, the internal cooling slotting grinding wheel device for form grinding comprises a main shaft and a rotating assembly, wherein the lower end of the main shaft 1 is connected with an upper matrix 3 and a lower matrix 5 of a grinding wheel; the lower end of the main shaft is provided with threads, and the grinding wheel upper matrix 3 and the grinding wheel lower matrix 5 are fastened on the main shaft 1 through a clamping nut 7; when the main shaft 1 rotates at a high speed, the grinding wheel assembly is driven to rotate at the high speed together; a cooling liquid inlet is formed in the lower end face of the main shaft, and a cooling liquid inlet 10 is connected with a cooling liquid inlet pipe 9 through a pneumatic rotary joint 8;
the grinding wheel component comprises an upper grinding wheel base body 3, an abrasive particle block 4, a lower grinding wheel base body 5, a liquid storage cavity 11 and a wing-shaped arc-shaped branched channel 13; the upper grinding wheel base body 3 is connected with the lower grinding wheel base body 5 through a connecting bolt 2; a stop gasket 6 is arranged between the bolt and the grinding wheel upper matrix 3 and the grinding wheel lower matrix 5 in a padding way, and the grinding wheel upper matrix 3 and the grinding wheel lower matrix 5 are locked by a clamping nut; annular liquid storage cavities 11 and a plurality of branched channels 13 communicated with the liquid storage cavities 11 are embedded in the upper grinding wheel base body 3 and the lower grinding wheel base body 5, and the branched channels 13 form a cooling liquid passage.
A cooling liquid inlet is formed in the inner diameter of the grinding wheel and communicated with the liquid storage cavity 11; the grinding area of the outer circumferential surface of the grinding wheel is provided with an outlet of the channel; the section of the channel along the circumferential tangential direction of the grinding wheel is rectangular; the height of the liquid storage cavity 11 is greater than that of the wing-shaped arc-shaped branched channel; grooves are dug in the upper end part and the lower end part of the liquid storage cavity 11, and the expansion ring sealing rings 12 are placed in the grooves to ensure that cooling liquid cannot leak when entering the liquid storage cavity.
The liquid storage cavity 11 is an annular channel, a cooling liquid inlet is arranged on one side close to the inner diameter of the grinding wheel, and the other side is connected with the inlet of each group of wing-shaped arc-shaped branched channels;
the branched channels with the same inlet are a channel group, and a plurality of channel groups are arranged around the axis of the grinding wheel in an annular array.
Each channel group is branched n times, and n is more than or equal to 1. The number of the channel groups is N E [8, 20] in consideration of the cooling effect and the space size structural limitation, and 10 is selected in this example.
And each channel group is provided with n +1 outlets, and the grinding surface between the outlets of the adjacent channel groups is adhered with the grinding block.
The shape of the branched channel is a wing-shaped arc, and the radian of the arc can be changed according to the difference of the diameter of the grinding wheel and the number of the channel groups; in order to improve the heat exchange effect, the included angle between the flow velocity vector direction at the outlet of the cold channel in the grinding wheel and the relative motion direction of the grinding surface is as follows in principle: the included angle is more than or equal to 5 degrees and less than or equal to 15 degrees.
The cooling liquid channel is a fin-shaped arc-shaped branched channel 13.
The grinding wheel upper base body 3 and the grinding wheel lower base body 5 are fastened on the main shaft 1 through a clamping nut 7.
The grinding wheel upper base body 3 and the grinding wheel lower base body 5 are connected through the connecting bolt 2, and a stop gasket 6 is arranged between the grinding wheel lower base body 5 and the connecting bolt 2 to prevent looseness.
An inlet of cooling liquid is formed in the inner wall of the grinding wheel, and a circular liquid storage cavity 11 is processed between the upper grinding wheel base body 3 and the lower grinding wheel base body 5 and used for storing the cooling liquid and stabilizing the flow.
The grinding block 4 is adhered to the grinding end faces of the grinding wheel upper matrix 3 and the grinding wheel lower matrix 5 through ceramic binders.
Grooves for placing the annular liquid storage cavity and a plurality of groups of wing-shaped arc-shaped branched channels communicated with the annular liquid storage cavity are processed on the inner surfaces of the grinding wheel upper base body 3 and the grinding wheel lower base body 5.
And the cooling liquid inlet pipe 9 is connected with the main shaft 1 through a pneumatic rotary joint 8 to provide cooling liquid for the interior of the grinding wheel. Under the effect of external pressure, the annular liquid storage cavity (11) is processed out in the middle of base member 5 under base member 3 and the emery wheel on the emery wheel after the coolant liquid lets in main shaft inner bore, and then flows into the inside branching passageway 13 of emery wheel for the coolant liquid direct action realizes the internal cooling of gear forming processing in the grinding arc district.
As shown in fig. 2, the upper grinding wheel base body 3 and the lower grinding wheel base body 5 are connected through a connecting bolt 2, a channel capable of being embedded with the liquid storage cavity 11 and the branch channel 13 is processed between the upper grinding wheel base body 3 and the lower grinding wheel base body 5, and in order to prevent the cooling liquid from leaking from the boundary of the upper and lower grinding wheel base bodies, a cooling liquid passage inside the grinding wheel is processed in a 3D printing mode and is embedded into a corresponding position between the upper grinding wheel base body 3 and the lower grinding wheel base body 5 as shown in fig. 3 (b). An expansion ring sealing ring is adopted between the liquid storage cavity and the grinding wheel base body for sealing. The abrasive grain block 4 is bonded on the grinding end faces of the grinding wheel upper base body 3 and the grinding wheel lower base body 5 by adopting ceramic bond. When the grinding wheel starts to work, cooling liquid flows into the liquid storage cavity 11 through the cooling liquid inlet 10, flows into the wing-shaped arc-shaped branched channel 13 after being subjected to steady flow and pressure adjustment in the liquid storage cavity, and then flies out of the channel outlet along the tangential direction under the action of gravity, external pressure and centrifugal force to wash out the cooling grinding arc area.
Grinding test studies were conducted on an internally cooled grinding wheel using a finned bifurcated channel with channel group number n-10 and the results obtained were compared with grinding results of a dry grinding without coolant and a conventional externally cast cooled grinding wheel. The trend of the change curve of the grinding temperature along with the grinding depth and the rotating speed of the grinding wheel under different working conditions is shown in fig. 6(a) to (b), wherein fig. 6(a) shows the influence of the grinding feed on the temperature of a grinding arc area, and it can be seen that the temperature of the grinding arc area is increased along with the increase of the grinding feed when dry grinding, traditional external pouring method and internal cooling grinding, the temperature of the grinding arc area is increased by 71 ℃ when the grinding feed is increased from 15 mu m to 20 mu m during dry grinding, and the temperature of the grinding arc area is increased by 16 ℃ when the grinding feed is increased from 20 mu m to 25 mu m. When the grinding feed amount is increased from 15 mu m to 20 mu m during cooling by the traditional external casting method, the temperature of the grinding arc area is increased by 48 ℃, and when the grinding feed amount is increased from 20 mu m to 25 mu m, the temperature of the grinding arc area is increased by 38 ℃. When the grinding feed amount is increased from 15 μm to 20 μm at the time of internal cooling, the temperature of the grinding arc area is increased by 43 ℃, and when the grinding feed amount is increased from 20 μm to 25 μm, the temperature of the grinding arc area is increased by 34 ℃. As can be seen from fig. 6(a), compared with the external casting method, the temperature of the grinding arc region is reduced by about 30% when the grinding is performed by the internal cooling method, so that the temperature of the grinding arc region can be effectively reduced.
Fig. 6(b) shows the influence of the grinding rotational speed on the temperature of the grinding arc region, and it can be seen that the higher the rotational speed of the grinding wheel, the higher the temperature of the grinding arc region in dry grinding, conventional outside casting method and internal cooling grinding. During dry grinding, when the rotating speed of the grinding wheel is increased from 1200rpm to 1400rpm, the temperature of the grinding arc area is increased by 29 ℃, and when the rotating speed of the grinding wheel is increased from 1400rpm to 1600rpm, the temperature of the grinding arc area is increased by 39 ℃. When the traditional external casting method is cooled, the temperature of the grinding arc area is increased by 17 ℃ when the rotating speed of the grinding wheel is increased from 1200rpm to 1400rpm, and the temperature of the grinding arc area is increased by 42 ℃ when the rotating speed of the grinding wheel is increased from 1400rpm to 1600 rpm. When the rotating speed of the grinding wheel is increased from 1200rpm to 1400rpm during internal cooling, the temperature of the grinding arc area is increased by 19 ℃, and when the rotating speed of the grinding wheel is increased from 1400rpm to 1600rpm, the temperature of the grinding arc area is increased by 39 ℃. Compared with external casting cooling, the cooling effect of internal cooling is better, and the temperature is reduced by about 30%.
Fig. 6(c) shows the influence of the coolant inlet pressure on the grinding arc temperature, and it can be seen that the grinding arc temperature decreases in both the conventional outside casting method and the inside cooling grinding as the inlet pressure increases. When the traditional external pouring method is used for cooling, the temperature of the grinding arc area is reduced by 15 ℃ when the inlet pressure is increased from 0.4MPa to 0.5MPa, and the temperature of the grinding arc area is reduced by 42 ℃ when the rotating speed of the grinding wheel is increased from 0.5MPa to 0.6 MPa. When the rotating speed of the grinding wheel is increased from 0.4MPa to 0.5MPa during internal cooling, the temperature of the grinding arc region is reduced by 19 ℃, and when the rotating speed of the grinding wheel is increased from 0.5MPa to 0.6MPa, the temperature of the grinding arc region is reduced by 39 ℃, and compared with the external casting method for cooling, the temperature of the grinding region is reduced by about 30%.
Example 2
In this embodiment, referring to the structure of the insect's veins, secondary channels are designed between two adjacent sets of channels to further improve the uniformity of the flow pressure and velocity of the coolant between the channels, as shown in fig. 7.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (4)
1. An internal cooling slotting grinding wheel device for forming grinding comprises a main shaft and a rotating assembly, and is characterized in that the lower end of the main shaft (1) is connected with an upper grinding wheel base body (3) and a lower grinding wheel base body (5); the lower end of the main shaft is provided with threads, and the grinding wheel upper base body (3) and the grinding wheel lower base body (5) are fastened on the main shaft (1) through a clamping nut (7); when the main shaft (1) rotates at a high speed, the grinding wheel assembly is driven to rotate at the same high speed;
the grinding wheel component comprises an upper grinding wheel base body (3), a grinding block (4), a lower grinding wheel base body (5), a liquid storage cavity (11) and a wing-shaped arc-shaped branched channel (13); the upper grinding wheel base body (3) is connected with the lower grinding wheel base body (5) through a connecting bolt (2); a stop gasket (6) is arranged between the bolt and the upper grinding wheel base body (3) as well as the lower grinding wheel base body (5), and the upper grinding wheel base body (3) and the lower grinding wheel base body (5) are locked by a clamping nut; an annular liquid storage cavity (11) and a plurality of branched channels (13) communicated with the liquid storage cavity (11) are embedded in the upper grinding wheel base body (3) and the lower grinding wheel base body (5), and the branched channels (13) form a cooling liquid passage;
a cooling liquid inlet is formed in the inner diameter of the grinding wheel and communicated with the liquid storage cavity (11); the grinding area of the outer circumferential surface of the grinding wheel is provided with an outlet of the channel; the section of the channel along the circumferential tangential direction of the grinding wheel is rectangular; the height of the liquid storage cavity (11) is greater than that of the wing-shaped arc-shaped branched channel;
the liquid storage cavity (11) is an annular channel, a cooling liquid inlet is arranged at one side close to the inner diameter of the grinding wheel, and the other side is connected with the inlet of each group of fin-shaped arc-shaped branched channels;
the branched channels with the same inlet are a channel group, each channel group is branched n times, n is more than or equal to 1, and a plurality of channel groups are arranged around the axis of the grinding wheel in an annular array;
the radian of the arc of the branched channel changes according to the difference of the diameter of the grinding wheel and the number of the channel groups; in principle, the included angle between the flow velocity vector direction at the outlet of the cold channel in the grinding wheel and the relative motion direction of the grinding surface is as follows: the included angle is more than or equal to 5 degrees and less than or equal to 15 degrees.
2. An internally cooled grooved grinding wheel unit for form grinding in accordance with claim 1 wherein the number of sets of channels is N e [8, 20 ].
3. An internally cooled grooved grinding wheel unit for form grinding as set forth in claim 1 wherein the number of sets of channels is 10.
4. The internally cooled grooved wheel unit for form grinding of claim 1 wherein the number of sets of channels, each set of channels having n +1 outlets, has abrasive grain blocks bonded to the grinding face between adjacent sets of channels.
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| CN201910681493.2A CN110480506B (en) | 2019-07-26 | 2019-07-26 | Internal cooling grooving grinding wheel device for forming grinding |
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| CN201910681493.2A CN110480506B (en) | 2019-07-26 | 2019-07-26 | Internal cooling grooving grinding wheel device for forming grinding |
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| CN112355918A (en) * | 2020-10-20 | 2021-02-12 | 黄莉 | Grinding wheel structure and machining process thereof |
| CN112536720A (en) * | 2020-11-16 | 2021-03-23 | 湖南大学 | Dust removal cooling method for self-adaptive grinding wheel device of grinding machine |
| CN112372448B (en) * | 2020-11-16 | 2022-01-28 | 湖南大学 | Self-adaptive grinding wheel device of grinding machine |
| CN112692739B (en) * | 2021-01-26 | 2022-06-28 | 山东理工大学 | Body armor type grinding wheel internally storing micro-nano abrasive particle mixed shear thickening fluid |
| CN112792673B (en) * | 2021-02-05 | 2023-01-20 | 宁波北仑稳展机械有限公司 | Grinding machine grinding device |
| CN113664738A (en) * | 2021-09-06 | 2021-11-19 | 湘潭大学 | Internal cooling grinding wheel |
| CN117182677A (en) * | 2023-09-23 | 2023-12-08 | 江苏保捷精锻有限公司 | Grinding machine tool for automobile hub outer ring bearing |
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| GB1348305A (en) * | 1970-04-15 | 1974-03-13 | Shaw M C | Grinding wheel |
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| CN207522407U (en) * | 2017-12-07 | 2018-06-22 | 江苏砺源科技有限公司 | Limit cooling medium stream to grinding wheel |
| CN108406620A (en) * | 2018-05-03 | 2018-08-17 | 西安增材制造国家研究院有限公司 | With spray lubricating fluid grinding wheel in modularization abrasive grain and including the grinding attachment of the grinding wheel |
| CN109773674A (en) * | 2019-02-26 | 2019-05-21 | 江苏芯工半导体科技有限公司 | Semiconductor wafer composite structure grinding wheel |
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2019
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| GB1348305A (en) * | 1970-04-15 | 1974-03-13 | Shaw M C | Grinding wheel |
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