CN112122673A

CN112122673A - Cooling device capable of automatically controlling water quantity and having high-temperature protection function

Info

Publication number: CN112122673A
Application number: CN202010961830.6A
Authority: CN
Inventors: 罗邪
Original assignee: Taizhou Kaigui Machinery Technology Co ltd
Current assignee: Taizhou Kaigui Machinery Technology Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2020-12-25

Abstract

The invention discloses a cooling device capable of automatically controlling water quantity and having high-temperature protection function, which comprises a transverse plate 11, wherein a fixed shaft cavity with a downward opening is arranged at the lower side of the right end of the transverse plate, a fixed shaft is fixedly connected between the front wall and the rear wall in the fixed shaft cavity, a fixed rod is arranged on the outer circular surface of the fixed shaft in a sliding manner, a transmission cavity is arranged at the lower end in the fixed rod, a driving rotating member capable of sliding up and down is arranged in the transmission cavity, and a driving spline shaft cavity with a downward opening is arranged in the driving rotating member. Thereby prolonging the service life of the milling cutter.

Description

Cooling device capable of automatically controlling water quantity and having high-temperature protection function

Technical Field

The invention relates to the technical field of milling, in particular to a cooling device capable of automatically controlling water quantity and having a high-temperature protection function.

Background

In the milling process, milling cutter can produce higher temperature because of high-speed rotation, adopt the coolant liquid can reduce milling cutter's temperature effectively this moment, thereby reduce the wearing and tearing of cutter and can better extension milling cutter's life, but general milling device is in operation, the coolant liquid is cooling work to the cutter all the time, and the cutter temperature is not high at times need not spray the coolant liquid to it, then the waste of coolant liquid has been led to, and the production cost is improved, simultaneously can lead to producing too high temperature when milling cutter high-speed rotation, at this moment refrigerate immediately with the coolant liquid and can lead to milling cutter to take place the crackle to damaging. The cooling device capable of automatically controlling water quantity and having the high-temperature protection function can solve the problems.

Disclosure of Invention

In order to solve the problems, the cooling device capable of automatically controlling water quantity and having a high-temperature protection function is designed in the embodiment, the cooling device capable of automatically controlling water quantity and having a high-temperature protection function comprises a transverse plate, a fixed shaft cavity with a downward opening is formed in the lower side of the right end of the transverse plate, a fixed shaft is fixedly connected between the front wall and the rear wall in the fixed shaft cavity, a fixed rod is arranged on the outer circular surface of the fixed shaft in a sliding manner, a transmission cavity is formed in the lower end of the fixed rod, a driving rotating member capable of sliding up and down is arranged in the transmission cavity, a driving spline shaft cavity with a downward opening is formed in the driving rotating member, a driving spline shaft is connected in a spline manner in the driving spline cavity, a connecting block is fixedly connected to the lower end surface of the fixed rod, a rotating block cavity is formed in the upper end of the connecting block, a rotating block is, the driving rotating piece is used for controlling the rotation of the driving spline shaft by sliding up and down, so that the rotation of the rotating block is controlled by the driving spline shaft, the lower end surface in the connecting block is fixedly connected with a spray head, the upper end of the spray head and the lower end in the connecting block are communicated with a piston plate cavity, a piston plate capable of sliding up and down is arranged in the piston plate cavity, the piston plate sprays cooling liquid in the piston plate cavity to a milling cutter through the spray head by continuous up-and-down reciprocating motion so as to cool, the rotating spline shaft is rotationally arranged on the left end surface of the lower side in the fixing rod, the left end of the rotating spline shaft extends to the left side of the fixing rod and is connected with a power rotating piece, a rotating inner piece is splined to the left end in the power rotating piece, a main shaft block is slidably arranged on the left side of the power rotating piece, when the power shaft rotates, the internal rotating part can be driven to rotate, and when the main shaft block slides left and right, the internal rotating part can stretch and move left and right in the power rotating part, a fixed block is fixedly arranged on the outer circular surface of the right end of the power rotating part, a spring slider is slidably arranged in the fixed block, a sliding rod is slidably arranged on the upper side of the fixed block, a slider is fixedly arranged at the right end of the sliding rod, the lower end surface of the left side of the sliding rod can be in contact connection with the upper end surface of the spring slider, when the rotating speed of the power shaft is too high, the power shaft drives the fixed block to rotate rapidly through the internal rotating part, the spring slider slides outwards to push the sliding rod to slide upwards, the sliding rod drives the active rotating part to slide upwards through the slider, and the active rotating part controls the rotating block to, therefore, cooling liquid is not sprayed in the spray head any more, the phenomenon that the cooling effect cannot be achieved due to the fact that the main shaft block is too far away from the spray head is avoided, when the main shaft block is close to the spray head, the spray head works to cool the milling cutter at the lower end of the main shaft block through spraying the cooling liquid, and consumption of the cooling liquid is reduced.

Preferably, a fixed block cavity with an upward opening is formed in the fixed block, the spring slide block slides up and down in the fixed block cavity, a fixed block spring is fixedly arranged between the lower wall in the fixed block cavity and the inner lower end face of the spring slide block, openings are symmetrically arranged at the left end and the right end in the spring slide block and face the fixture block cavities of the left wall and the right wall in the fixed block respectively, openings are symmetrically arranged at the left end and the right end in the fixed block and face the fixture block spring cavity of the spring slide block, a fixture block is arranged in the fixture block spring cavity in a sliding manner, a fixture block is arranged in the fixture block spring cavity in a mode of being far away from the inner wall on one side of the spring slide block and far away from the fixture block.

But preferably, the center is equipped with the coolant liquid chamber in the rotation block, the coolant liquid intracavity upper wall left and right sides symmetry and fixed inlet tube that is equipped with, the coolant liquid intracavity lower wall left and right sides symmetry and intercommunication have logical chamber, the left and right sides lead to intracavity lower wall and communicate respectively and have centrifugal slide board chamber, the left and right sides centrifugal slide board intracavity slides respectively and is equipped with centrifugal slide, the left and right sides centrifugal slide board is kept away from coolant liquid intracavity center one end respectively with the left and right sides fixedly connected with extension spring between the centrifugal slide board intracavity wall, the left and right sides centrifugal slide board chamber is kept away from extension spring one side inner wall lower extreme is fixed respectively and is equipped with the delivery port.

Preferably, the right side of the lower end face of the rotating block is fixedly provided with a fixed connecting block, the lower wall in the rotating block cavity is communicated with a sliding plate cavity, a sliding plate which can be contacted with the lower end face of the fixed connecting block is arranged in the sliding plate cavity in a sliding manner, the left side of the upper end face of the sliding plate is fixedly provided with a sliding plate block, the upper end of the sliding plate block upwards extends to the inner part of the rotating block cavity and is connected with the fixed connecting block in a sliding manner, the sliding plate cavity is arranged in the center of the lower end face of the sliding plate, a sliding plate rod is fixedly arranged in the center of the lower end face of the sliding plate, and compression.

Preferably, the center of the upper end face of the piston plate is fixedly connected with the lower end face of the sliding plate rod, and the upper side of the inner rear wall of the cavity of the piston plate is communicated with a cooling liquid port.

Preferably, the fixed rod is internally provided with a sliding rod cavity with a left opening at the upper side of the transmission cavity, the right wall of the sliding rod cavity is communicated with a sliding block cavity, a sliding block is arranged in the sliding block cavity in a sliding mode, the right end of the sliding rod extends rightwards to the inner side of the sliding rod cavity and is fixedly connected with the left end face of the sliding block, a sliding rod spring is fixedly arranged between the upper end face of the sliding rod and the upper wall of the sliding rod cavity, and a sliding block pull rope is fixedly connected with the center of the lower end of the sliding block.

Preferably, the outer disc of the driving rotation part is fixedly provided with a switching bevel gear, the upper end of the driving rotation part is positioned in the transmission cavity, a ball bearing is connected to a bearing in the transmission cavity, the upper end of the ball bearing is symmetrically and fixedly provided with an annular spring between the upper wall of the transmission cavity, the left side and the right side of the upper end of the ball bearing are symmetrically and fixedly provided with an annular spring pull rope connected with the slider pull rope, and the right end of the rotating spline shaft extends rightwards to the transmission cavity, and the driving bevel gear meshed with the switching bevel gear is fixedly arranged on the right end of the rotating spline shaft.

Preferably, a rotating internal part cavity with a leftward opening is formed in the left side in the power rotating part, the rotating internal part cavity is in splined connection with the outer circular surface of the rotating internal part, a restoring slider is slidably arranged between the right end of the rotating internal part and the right wall in the rotating internal part cavity, a restoring spring is fixedly arranged between the restoring slider and the rotating internal part cavity, a restoring pull rope connected with the clamp block pull rope is fixedly connected to the center of the right end of the restoring slider, and a cavity is formed in the power rotating part and located on the outer circular surface of the rotating internal part.

Preferably, a spline shaft cavity with a right opening is formed in the right end of the main shaft block and located on the right side of the power cavity, a power spline shaft rotationally connected to the center of the left wall in the spline shaft cavity is connected to the internal spline of the rotating internal part through an internal spline, a rotating bevel gear is fixedly arranged in the power cavity in a manner of extending the left end of the power spline shaft leftwards, and a power bevel gear meshed with the rotating bevel gear is fixedly arranged on the outer circular surface of the power shaft.

The invention has the beneficial effects that: according to the invention, the cooling liquid discharge is automatically adjusted through the rotation speed and position of the milling cutter, the cooling liquid discharge is controlled through the centrifugal sliding plate, the cooling liquid spraying speed is adjusted through the piston plate according to the rotation speed, the consumption of the cooling liquid is reduced, and meanwhile, the cooling liquid discharge is closed through the mode that the rotation speed of the milling cutter is too high, so that the milling cutter is prevented from being cooled under the condition of too high temperature to cause damage, and the service life of the milling cutter is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of A in FIG. 1;

FIG. 3 is an enlarged schematic view of B of FIG. 1;

FIG. 4 is an enlarged schematic view of C in FIG. 3;

fig. 5 is an enlarged schematic view of D in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a cooling device capable of automatically controlling water quantity and having high temperature protection function, which comprises a transverse plate 11, wherein a fixed shaft cavity 19 with a downward opening is arranged at the lower side of the right end of the transverse plate 11, a fixed shaft 20 is fixedly connected between the front wall and the rear wall in the fixed shaft cavity 19, a fixed rod 18 is arranged on the outer circular surface of the fixed shaft 20 in a sliding manner, a transmission cavity 13 is arranged at the lower end in the fixed rod 18, a driving rotating member 15 capable of sliding up and down is arranged in the transmission cavity 13, a driving spline shaft cavity 14 with a downward opening is arranged in the driving rotating member 15, a driving spline shaft 12 is connected in the driving spline shaft cavity 14 in a spline manner, a connecting block 71 is fixedly connected on the lower end surface of the fixed rod 18, a rotating block cavity 72 is arranged at the upper end in the connecting block 71, a rotating block 60 is rotatably arranged in the rotating block cavity 72, the lower end of, the driving rotation part 15 controls the rotation of the driving spline shaft 12 by sliding up and down, so that the rotation of the rotation block 60 is controlled by the driving spline shaft 12, the lower end face in the connecting block 71 is fixedly connected with the spray head 21, the upper end of the spray head 21 is positioned at the lower end in the connecting block 71 and is communicated with the piston plate cavity 69, the piston plate 66 capable of sliding up and down is arranged in the piston plate cavity 69, the piston plate 66 sprays cooling liquid in the piston plate cavity 69 to the milling cutter through the spray head 21 by continuous up-and-down reciprocating motion so as to cool, the left end face of the lower side in the fixing rod 18 is rotatably provided with the rotation spline shaft 23, the left end of the rotation spline shaft 23 extends to the left side of the fixing rod 18 and is connected with the power rotation part 73 through splines, the left end in the power rotation part 73 is connected with the rotation internal, a power cavity 35 is arranged in the main shaft block 36, a power shaft 34 is rotatably arranged at the center of the upper wall and the lower wall of the power cavity 35, the power shaft 34 can drive the internal rotating member 27 to rotate when rotating, the internal rotating member 27 can move in the power rotating member 73 in a left-right telescopic manner when the main shaft block 36 slides left and right, a fixed block 37 is fixedly arranged on the outer circumferential surface of the right end of the power rotating member 73, a spring slider 38 is slidably arranged in the fixed block 37, a sliding rod 57 is slidably arranged on the upper side of the fixed block 37, a slider 55 is fixedly arranged on the right end of the sliding rod 57, the lower end surface of the left side of the sliding rod 57 can be in contact connection with the upper end surface of the spring slider 38, when the rotating speed of the power shaft 34 is too high, the power shaft 34 drives the fixed block 37 to rotate through the internal rotating member 27, and the spring slider 38 slides outward to push, the sliding rod 57 drives the driving rotation member 15 to slide upwards through the sliding block 55, the driving rotation member 15 controls the rotation block 60 to stop rotating, so that the cooling liquid is not sprayed in the spray head 21, the problem that the cooling effect cannot be achieved due to the fact that the spindle block 36 is too far away from the spray head 21 is solved, when the spindle block 36 is close to the spray head 21, the spray head 21 works to cool the milling cutter at the lower end of the spindle block 36 through spraying the cooling liquid, and consumption of the cooling liquid is reduced.

Beneficially, a fixed block cavity 42 with an upward opening is formed in the fixed block 37, the spring slider 38 slides up and down in the fixed block cavity 42, a fixed block spring 43 is fixedly arranged between a lower wall in the fixed block cavity 42 and a lower end face in the spring slider 38, fixture block cavities 44 with openings facing a left wall and a right wall in the fixed block 37 are symmetrically formed at left and right ends in the spring slider 38, fixture block spring cavities 41 with openings facing the spring slider 38 are symmetrically formed at left and right ends in the fixed block 37, a fixture block 45 is slidably arranged in the fixture block spring cavity 41, a fixture block spring 39 is fixedly arranged between an inner wall of one side of the fixture block spring cavity 41, which is far away from the spring slider 38, and one end face of the fixture block 45, which is far away from the spring slider 38, and a fixture block pull rope 40 is fixedly arranged at the.

Beneficially, the rotating block 60 is provided with a cooling liquid cavity 59 in the center, the cooling liquid cavity 59 is provided with water inlet pipes 58 symmetrically and fixedly on the left and right sides of the inner upper wall, the cooling liquid cavity 59 is provided with a through cavity 49 symmetrically and communicated with the left and right sides of the inner lower wall, the through cavity 49 is provided with a centrifugal sliding plate cavity 46 communicated with the inner lower wall, the centrifugal sliding plate cavity 46 is provided with a centrifugal sliding plate 47 in a sliding manner, the centrifugal sliding plate 47 is far away from the left and right sides of the inner center of the cooling liquid cavity 59, one end of the centrifugal sliding plate 47 is respectively and fixedly connected with an extension spring 48 between the inner walls of the centrifugal sliding plate cavity 46, and the centrifugal sliding plate cavity 46 is far away from the lower end of the inner wall of one side.

Beneficially, a fixed connecting block 62 is fixedly arranged on the right side of the lower end face of the rotating block 60, a sliding plate cavity 67 is communicated with the lower wall in the rotating block cavity 72, a sliding plate 61 capable of contacting with the lower end face of the fixed connecting block 62 is slidably arranged in the sliding plate cavity 67, a sliding plate block 65 is fixedly arranged on the left side of the upper end face of the sliding plate 61, the upper end of the sliding plate block 65 extends upwards to the rotating block cavity 72 and can be slidably connected with the fixed connecting block 62, a sliding plate rod 63 is fixedly arranged in the sliding plate cavity 67 and located at the center of the lower end face of the sliding plate 61, and compression springs 64 are fixedly arranged between the lower wall in the sliding plate cavity 67 and the lower end face of the sliding plate 61 and located on the.

Advantageously, the center of the upper end face of the piston plate 66 is fixedly connected with the lower end face of the sliding plate rod 63, and a cooling liquid port 68 is communicated with the upper side of the inner rear wall of the piston plate cavity 69.

Beneficially, a sliding rod cavity 17 with a leftward opening is formed in the fixed rod 18 and located on the upper side of the transmission cavity 13, a slider cavity 16 is communicated with the right wall in the sliding rod cavity 17, a slider 55 is slidably disposed in the slider cavity 16, the right end of the sliding rod 57 extends rightward to the inside of the sliding rod cavity 17 and is fixedly connected with the left end face of the slider 55, a sliding rod spring 56 is fixedly disposed between the upper end face of the sliding rod 57 and the upper wall in the sliding rod cavity 17, and a slider pull rope 53 is fixedly connected to the center of the lower end of the slider 55.

Beneficially, a switching bevel gear 70 is fixedly arranged on the outer circumferential surface of the driving rotation member 15, a ball bearing 54 is bearing-connected to the upper end of the driving rotation member 15 and located in the transmission cavity 13, an annular spring 52 is fixed and bilaterally symmetrical between the upper end of the ball bearing 54 and the inner upper wall of the transmission cavity 13, an annular spring pull rope 51 connected with the slider pull rope 53 is fixed and bilaterally symmetrical to the upper end of the ball bearing 54, and a driving bevel gear 22 capable of being meshed with the switching bevel gear 70 is fixedly arranged in the transmission cavity 13 and extends rightwards from the right end of the rotation spline shaft 23.

Advantageously, a rotating inner part cavity 25 with a leftward opening is formed in the power rotating part 73 on the left side, the rotating inner part cavity 25 is in splined connection with the outer circular surface of the rotating inner part 27, a return sliding block 28 is slidably arranged between the right end of the rotating inner part 27 and the right wall in the rotating inner part cavity 25, a return spring 24 is fixedly arranged between the return sliding block 28 and the rotating inner part cavity 25, a return pull rope 26 connected with the fixture pull rope 40 is fixedly connected to the center of the right end of the return sliding block 28, and a cavity 29 is formed in the power rotating part 73 and located on the outer circular surface of the rotating inner part 27.

Advantageously, a right-opening spline shaft cavity 30 is formed at the right end in the main shaft block 36 and at the right side of the power cavity 35, a power spline shaft 31 rotatably connected to the center of the left wall in the spline shaft cavity 30 is splined in the rotating inner part 27, the left end of the power spline shaft 31 extends leftwards to the inside of the power cavity 35 and is fixedly provided with a rotating bevel gear 32, and a power bevel gear 33 engaged with the rotating bevel gear 32 is fixedly arranged on the outer circumferential surface of the power shaft 34.

The following will describe in detail the usage steps of a cooling device with automatic water quantity control and high temperature protection function in this document with reference to fig. 1 to 5:

in an initial state, the upper end of the spindle block 36 is connected with a milling spindle, the lower end of the spindle block 36 is connected with a milling cutter, when the power shaft 34 rotates, the milling cutter can be driven to perform milling operation, the power shaft 34 stops working, the internal rotating member 27 is located at the right end in the internal rotating member cavity 25, the fixture block 45 is located in the fixture block spring cavity 41, the sliding rod 57 is located at the lower end in the sliding rod cavity 17, the driving bevel gear 22 is meshed with the switching bevel gear 70, the sliding plate 61 is located at the upper end in the sliding plate cavity 67, the piston plate 66 is located at the upper end in the piston plate cavity 69, the centrifugal sliding plate 47 seals the through cavity 49, and external cooling liquid enters the cooling liquid cavity 59 through.

When the milling machine works, the power shaft 34 is started to perform milling work, the power shaft 34 rotates to drive the rotating bevel gear 32 through the power bevel gear 33 so as to drive the power spline shaft 31 to rotate, the power spline shaft 31 drives the power rotating piece 73 to rotate through the rotating inner piece 27, the power rotating piece 73 drives the driving bevel gear 22 through the rotating spline shaft 23 so as to drive the switching bevel gear 70 so as to drive the driving rotating piece 15 to rotate, the driving rotating piece 15 drives the rotating block 60 through the driving spline shaft 12 to rotate so as to drive the left and right centrifugal sliding plates 47 to slide towards one side far away from the water outlet 50 through centrifugal force, so that the through cavity 49 is opened, when the milling rotating speed is higher, the rotating speed of the power shaft 34 is higher, the rotating speed of the rotating block 60 is higher, the centrifugal force is higher, the opening of the centrifugal sliding plate 47 to open the through cavity 49 is, the cooling liquid enters the cooling liquid port 68 through the water outlet 50 and then enters the piston plate cavity 69 to be sprayed to the milling cutter through the spray head 21;

meanwhile, the rotating block 60 drives the fixed connecting block 62 to rotate and further press the sliding plate 65 downwards by intermittently contacting with the sliding plate 65, the sliding plate 65 presses the piston plate 66 downwards through the sliding plate rod 63 to perform continuous up-and-down reciprocating motion, the faster the rotating speed of the power shaft 34 is, the faster the piston plate 66 reciprocates up and down, and the piston plate 66 presses the cooling liquid in the piston plate cavity 69 downwards through the up-and-down reciprocating motion, so that the cooling liquid is sprayed outwards through the spray head 21.

When the rotating speed of the power shaft 34 is too high, the milling cutter generates high temperature due to rapid rotation, general milling cutters are easy to crack and further cause damage when being cooled at high temperature, cooling is not suitable to be performed at the moment, when the rotating speed is too high, the centrifugal force spring sliding block 38 slides outwards to push the sliding rod 57 upwards to pull the sliding block pulling rope 53 upwards through the sliding block 55, the sliding block pulling rope 53 pulls the ball bearing 54 upwards through the annular spring pulling rope 51 to drive the driving rotating piece 15 to slide upwards, the driving bevel gear 22 is separated from the switching bevel gear 70, the driving rotating piece 15 does not rotate any more, the rotating block 60 stops, the centrifugal sliding plate 47 seals the through cavity 49, and the spray head 21 does not spray cooling liquid any more.

When the main shaft block 36 slides leftwards, when the main shaft block 36 is too far away from the spray head 21, the power rotating piece 73 drives the fixed block 37 to slide leftwards and is separated from the sliding rod 57, the right end of the internal rotating piece 27 enters the cavity 29, the return spring 24 drives the internal rotating piece cavity 25 to slide leftwards, then the return pull rope 26 drives the fixture block pull rope 40 to drive the fixture block 45 to enter the fixture block cavity 44, the spring slider 38 and the fixed block 37 are fixed, other equipment is prevented from being damaged due to the upward sliding of the spring slider 38, the power rotating piece 73 is not connected with the rotating piece 27, the power rotating piece 73 stops rotating, then the spray head 21 is driven to not spray cooling liquid any more, when the main shaft block 36 and the spray head 21 are close to each other again, the internal rotating piece 27 drives.

When the rotation speed is reduced, the fixed block spring 43 drives the spring slide block 38 to slide downwards for resetting, the sliding rod spring 56 drives the sliding rod 57 to further drive the switching bevel gear 70 to slide downwards to be meshed with the driving bevel gear 22 again, and the spray head 21 starts to cool the milling cutter.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a cooling device that ability automatic control water yield and have high temperature protect function, includes diaphragm 11, its characterized in that: a fixed shaft cavity with a downward opening is arranged at the lower side of the right end of the transverse plate, a fixed shaft is fixedly connected between the front wall and the rear wall in the fixed shaft cavity, a fixed rod is arranged on the outer surface of the fixed shaft in a sliding manner, a transmission cavity is arranged at the inner lower end of the fixed rod, a driving rotating part capable of sliding up and down is arranged in the transmission cavity, a driving spline shaft cavity with a downward opening is arranged in the driving rotating part, a driving spline shaft is connected in the driving spline shaft cavity through a spline, a connecting block is fixedly connected to the lower end surface of the fixed rod, a rotating block cavity is arranged at the inner upper end of the connecting block, a rotating block is rotatably arranged in the rotating block cavity, the lower end of the driving spline shaft extends downwards into the rotating block cavity and is fixedly connected with the upper end surface of, the upper end and the lower end of the nozzle are communicated with a piston plate cavity, a piston plate capable of sliding up and down is arranged in the piston plate cavity, the piston plate sprays cooling liquid in the piston plate cavity to a milling cutter through the nozzle by continuous up-and-down reciprocating motion so as to cool, a rotating spline shaft is rotatably arranged on the left end face of the lower side in the fixed rod, the left end of the rotating spline shaft extends to the left side of the fixed rod and is connected with a power rotating part through a spline, a rotating internal part is connected with the spline of the left end in the power rotating part, a main shaft block is slidably arranged on the left side of the power rotating part, a power cavity is arranged in the main shaft block, a power shaft is rotatably arranged at the center of the upper wall and the lower wall of the power cavity, the rotating internal part can be driven to rotate when the power shaft rotates, and when the main, the rotating inner part can stretch and move left and right in the power rotating part, a fixed block is fixedly arranged on the outer circular surface of the right end of the power rotating part, a spring sliding block is arranged in the fixed block in a sliding mode, a sliding rod is arranged on the upper side of the fixed block in a sliding mode, a sliding block is fixedly arranged at the right end of the sliding rod, the lower end face of the left side of the sliding rod can be in contact connection with the upper end face of the spring sliding block, when the rotating speed of the power shaft is too high, the power shaft drives the fixed block to rotate rapidly through the rotating inner part, the spring sliding block slides outwards to push the sliding rod to slide upwards, the sliding rod drives the active rotating part to slide upwards through the sliding block, the active rotating part controls the rotating block to stop rotating, so that cooling liquid is not sprayed in the spray head any more, and, when the spindle block is close to the spray head, the spray head works to cool the milling cutter at the lower end of the spindle block by spraying cooling liquid, so that the consumption of the cooling liquid is reduced.

2. The cooling device of claim 1, which can automatically control water amount and has high temperature protection function, characterized in that: the fixture block spring assembly is characterized in that a fixed block cavity with an upward opening is formed in the fixed block, the spring slide block slides up and down in the fixed block cavity, a fixed block spring is fixedly arranged between the lower wall of the fixed block cavity and the inner lower end face of the spring slide block, openings are symmetrically arranged at the left end and the right end in the spring slide block and face the fixture block cavities of the left wall and the right wall in the fixed block respectively, openings face the fixture block spring cavity of the spring slide block is symmetrically arranged at the left end and the right end in the fixed block, a fixture block is arranged in the fixture block spring cavity in a sliding mode, a fixture block is arranged in the fixture block spring cavity in a far away mode, the inner wall of one side of the spring slide block.

3. The cooling device of claim 1, which can automatically control water amount and has high temperature protection function, characterized in that: the center is equipped with the coolant liquid chamber in the rotation piece, coolant liquid intracavity upper wall left and right sides symmetry and fixed inlet tube that is equipped with, the symmetry of coolant liquid intracavity lower wall left and right sides and intercommunication have logical chamber, the left and right sides lead to intracavity lower wall and communicate respectively and have centrifugal slide chamber, the left and right sides centrifugal slide intracavity slides respectively and is equipped with centrifugal slide, the left and right sides centrifugal slide is kept away from coolant liquid intracavity center one end respectively with the left and right sides fixedly connected with extension spring between the centrifugal slide intracavity wall, the left and right sides centrifugal slide chamber is kept away from extension spring one side inner wall lower extreme is fixed respectively and is equipped with the delivery port.

4. The cooling device of claim 1, which can automatically control water amount and has high temperature protection function, characterized in that: the fixed connecting block that is equipped with in bottom surface right side under the turning block, turning block intracavity lower wall intercommunication has the sliding plate chamber, the sliding plate intracavity slip be equipped with can with the sliding plate that fixed connecting block bottom end contacted, the fixed sliding plate that is equipped with in sliding plate up end left side, the sliding plate upper end upwards extend to turning block intracavity can with fixed connecting block sliding connection, the sliding plate intracavity just is located the fixed sliding plate pole that is equipped with in terminal surface center under the sliding plate, sliding plate intracavity lower wall with just be located under the sliding plate between the terminal surface sliding plate the fixed compression spring that is equipped with in sliding plate pole left and right sides.

5. The cooling device capable of automatically controlling water amount and having high temperature protection function as claimed in claim 4, wherein: the center of the upper end face of the piston plate is fixedly connected with the lower end face of the sliding plate rod, and the upper side of the inner rear wall of the cavity of the piston plate is communicated with a cooling liquid port.

6. The cooling device of claim 1, which can automatically control water amount and has high temperature protection function, characterized in that: the slide bar is characterized in that the fixed rod is arranged in a slide bar cavity with a left opening at the upper side of the transmission cavity, the right wall of the slide bar cavity is communicated with the slide block cavity, a slide block is arranged in the slide block cavity in a sliding mode, the right end of the slide bar extends rightwards to the inside of the slide bar cavity and is fixedly connected with the left end face of the slide block, a slide bar spring is fixedly arranged between the upper end face of the slide bar and the upper wall of the slide bar cavity, and a slide block pull rope is fixedly connected with the center of the lower.

7. The cooling device of claim 1, which can automatically control water amount and has high temperature protection function, characterized in that: the outer disc of the initiative rotation piece is fixed and is equipped with the switching bevel gear, the initiative rotation piece upper end just is located transmission intracavity bearing is connected with ball bearing, ball bearing upper end with bilateral symmetry just fixes being equipped with annular spring between the transmission intracavity upper wall, ball bearing upper end bilateral symmetry just fixed be equipped with the annular spring stay cord that the slider stay cord is connected, the rotation integral key shaft right-hand member extends to right the transmission intracavity fixed be equipped with can with switching bevel gear engaged with drive bevel gear.

8. The cooling device of claim 2, which can automatically control the amount of water and has a high temperature protection function, wherein: the inner left side of the power rotating part is provided with a rotating inner part cavity with a leftward opening, the rotating inner part cavity is in splined connection with the outer circular surface of the rotating inner part, a return sliding block is arranged between the right end of the rotating inner part and the right wall of the rotating inner part cavity in a sliding mode, a return spring is fixedly arranged between the return sliding block and the rotating inner part cavity, the center of the right end of the return sliding block is fixedly connected with a return pull rope connected with the pull rope of the clamping block, and a cavity is formed in the power rotating part and located on the outer circular surface of the.

9. The cooling device of claim 1, which can automatically control water amount and has high temperature protection function, characterized in that: the right end of the main shaft block is positioned on the right side of the power cavity, a spline shaft cavity with a right opening is formed in the right end of the main shaft block, a power spline shaft which is rotatably connected to the center of the left wall in the spline shaft cavity is connected to the inner spline of the rotating inner part through an internal spline, the left end of the power spline shaft extends leftwards to the inside of the power cavity, a rotating bevel gear is fixedly arranged in the power cavity, and a power bevel gear meshed with the rotating bevel gear is fixedly arranged.