Ball screw pair with built-in circulating cooling system

Abstract

The invention discloses a ball screw pair with a built-in circulating cooling system, and relates to the technical field of mechanical structures, the ball screw pair comprises a cooling mechanism, a circulating mechanism is arranged on the left side of the cooling mechanism, a lubricating mechanism is arranged on the outer side of the cooling mechanism, and the lubricating mechanism is movably connected with the outer surface of the cooling mechanism. The right side of the circulating mechanism is fixedly connected with the left side of the cooling mechanism; the cooling mechanism comprises a lead screw, closed-loop oil ways are formed in the left side and the right side of the interior of the lead screw correspondingly, a plurality of cooling oil ways are formed in the lead screw, and the multiple cooling oil ways are arranged in an annular array with the lead screw as the center. The left sides and the right sides of the multiple cooling oil ways are matched with the outer sides of the closed-loop oil ways correspondingly. According to the ball screw pair with the built-in circulating cooling system, heat dissipation can be conducted from inside to outside, meanwhile, heat dissipation can be conducted on the inner center position of the screw rod, the heat dissipation radiation range of the ball screw pair is expanded, and the heat dissipation speed is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical structures, in particular to a ball screw pair with a built-in circulating cooling system. BACKGROUND

[0002] The ball screw pair, also known as ball screw pair or ball screw pair, is composed of a screw and a nut, and is the most precise and commonly used transmission device in current transmission machinery, suitable for various scenes. During its operation, heat is generated due to the high-speed mechanical operation of the screw, which causes the following problems.

[0003] As the core component of precise linear transmission, the temperature rise of the ball screw pair directly affects the positioning accuracy and service life. Under the current trend of high-speed development, traditional grease lubrication cannot meet the heat dissipation demand. Oil cooling technology can alleviate the temperature rise but cannot be used for a long time. Air cooling technology has insufficient heat dissipation efficiency and is prone to poor lubrication. Among them, the existing oil cooling technology passes through a straight cooling channel in the screw rod and injects cooling oil to dissipate heat. However, the heat dissipation area radiated by such a channel is small, and the cooling oil at the center of the cooling channel cannot spread the cooling effect in the first time, but needs to wait for the heat dissipation effect of the outer cooling oil to take effect, and then the temperature of the cooling oil at the center and the outer cooling oil is balanced. The temperature transfer is limited by the medium of the cooling oil and is slow.

[0004] Therefore, there is an urgent need for a ball screw pair with a built-in circulating cooling system. SUMMARY

[0005] To achieve the above purpose, the present application provides the following technical scheme: a ball screw pair with a built-in circulating cooling system, comprising a cooling mechanism, the left side of the cooling mechanism is provided with a circulating mechanism, the outer side of the cooling mechanism is provided with a lubricating mechanism, the outer surface of the lubricating mechanism and the cooling mechanism is movably connected, the right side of the circulating mechanism and the left side of the cooling mechanism are fixedly connected. The cooling mechanism comprises a screw rod, the inside of the screw rod is provided with a closed loop oil path on the left and right sides, the inside of the screw rod is provided with a cooling oil path, the cooling oil path is provided with a plurality of cooling oil paths, the cooling oil path is provided with a plurality of cooling oil paths, and the cooling oil path is provided with a plurality of cooling oil paths. The circulating mechanism comprises a temperature control valve, the left side of the temperature control valve is fixedly connected with an oil return tank, the outer side of the oil return tank is fixedly connected with a first liquid pipe, the left side of the first liquid pipe is fixedly connected with a cooling tank, the front side of the cooling tank is provided with a groove, the groove is fixedly connected with a heat exchange plate, the front side of the heat exchange plate is provided with a conductor group, the back of the conductor group is fixedly connected with a heat absorption end, the back of the heat absorption end is fixedly connected with the front side of the heat exchange plate, and the front side of the conductor group is fixedly connected with a heat release end.

[0006] Preferably, the right side of the lead screw is fixedly connected with an oil inlet pipe, the right side of the oil inlet pipe is provided with an oil tank, the left side of the oil tank is fixedly connected with a first liquid pump, the left side of the first liquid pump is fixedly connected with the right side of the oil inlet pipe, the left side of the lead screw is fixedly connected with an oil outlet pipe, the right side of the closed loop oil circuit is matched with the oil inlet pipe, and the left side of the closed loop oil circuit is matched with the oil outlet pipe.

[0007] Preferably, the right side of the oil return tank is fixedly connected with the left side of the oil outlet pipe, the left side of the cooling tank is fixedly connected with a mounting plate, the right side of the mounting plate is fixedly connected with a fan, and the right side of the fan is matched with the heat release end.

[0008] Preferably, the left side of the cooling tank is fixedly connected with a second liquid pump, the left side of the second liquid pump is fixedly connected with a second liquid pipe, and the right side of the second liquid pipe is fixedly connected with a storage tank.

[0009] Preferably, the front side of the storage tank is fixedly connected with a heat resistance plate, and the front side of the heat resistance plate is fixedly connected with the back of the cooling tank.

[0010] Preferably, the right side of the storage tank is fixedly connected with a third liquid pipe, and the right side of the third liquid pipe is fixedly connected with the left side of the oil return tank.

[0011] Preferably, the inside of the storage tank is fixedly connected with a liquid level detector, the inside of the cooling tank is fixedly connected with a temperature detector, the liquid level detector is electrically connected with the third liquid pipe, the liquid level detector is electrically connected with the first liquid pump, the liquid level detector is electrically connected with the first liquid pipe, and the temperature detector is electrically connected with the second liquid pump.

[0012] Preferably, the lubricating mechanism comprises a nut, the nut is threadedly connected with the lead screw, the outer side of the nut is fixedly connected with a compressed gas tank, the outer side of the nut is fixedly connected with a lubricating oil tank, the outer surface of the nut is fixedly connected with a mixing bin, the outer side of the mixing bin is respectively fixedly connected with the compressed gas tank and the lubricating oil tank, and the outer side of the mixing bin is fixedly connected with a nozzle.

[0013] Preferably, the nozzle is provided with a plurality of nozzles, the plurality of nozzles are arranged in a ring array with the mixing bin as the center, and the output ends of the plurality of nozzles are matched with the same lead screw.

[0014] In summary, the application provides a ball screw pair with a built-in circulating cooling system, which has the following beneficial effects: 1. The ball screw pair with a built-in circulating cooling system sets up a closed loop oil path and a cooling oil path in the screw rod to form a complete cooling medium circulation channel. The cooling oil path branches from the closed loop oil path through a small channel to flow from the outer layer of the screw rod, allowing it to radiate heat from the inside to the outside, while radiating heat to the internal center position of the screw rod, expanding its heat radiation range, accelerating the heat dissipation speed, achieving effective cooling of the screw rod, and improving the working stability and service life of the ball screw pair. The oil tank is used to store the cooling medium, and the first liquid pump provides power to pump the cooling medium in the oil tank into the closed loop oil path inside the screw rod through the oil inlet pipe. After the cooling medium circulates inside the screw rod, it flows out through the oil outlet pipe, realizing the circulation of the cooling medium and continuously cooling the screw rod.

[0015] 2、The built-in circulating cooling system of the ball screw pair, through the temperature control valve can automatically control its flow according to the temperature of the cooling medium, realize intelligent cooling control, the oil return tank is used to collect the cooling medium from the cooling mechanism, when the cooling oil temperature in the screw is higher, the temperature control valve opens, the cooling oil with higher temperature is transported into the oil return tank, and through the first liquid pipe, the cooling oil with higher temperature is transported into the cooling tank, when the temperature is lower, the temperature control valve is closed, at this time, through the direct current input of the conductor group, the potential energy exchange of the electrons in the current occurs at the interface of the two materials, due to the different carrier concentrations of the two materials, the electrons will migrate from the high concentration area to the low concentration area, when passing through the interface, exchange energy with the outside, so that the heat absorbing end can absorb heat through the heat exchange plate as the temperature exchange, cool the cooling oil in the cooling tank, and release the temperature through the heat releasing end, the oil return tank collects the cooling medium flowing out of the oil outlet pipe for subsequent treatment and recycling, the fan blows air to the heat releasing end to accelerate the flow of air around the heat releasing end, improve the heat dissipation efficiency, enhance the cooling effect, so that the cooling medium can be cooled faster and reused, the second liquid pump provides power, and through the second liquid pipe, the cooling medium in the cooling tank is transported to the storage tank to realize the storage and distribution of the cooling medium, the check valve is built in the second liquid pipe to avoid the backflow of the cooled cooling oil, the heat blocking plate plays a heat insulation role to prevent the heat in the cooling tank from being transferred to the storage tank, ensure the temperature stability of the cooling medium in the storage tank, and avoid affecting the cooling effect due to temperature rise, when the cooling medium in the storage tank needs to be supplemented to the circulating system, the flow of the cooling medium can be realized through the third liquid pipe, the third liquid pipe is in the default closed state to prevent liquid from entering the storage tank from the oil return tank, and also prevent the stored cooling oil in the storage tank from flowing out before the release condition is reached, the temperature detector is used to detect the temperature of the cooling oil in the cooling tank, when the cooling oil temperature decreases to the normal use temperature, the second liquid pump is opened to pump out the cooling oil that has been cooled in the internal, at the same time, the liquid level detector is used to detect the liquid level of the cooling oil that has been cooled in the storage tank, when the liquid level is high, the liquid level detector sends an electrical signal to open the third liquid pipe, at the same time, the first liquid pump works in reverse, and the first liquid pipe is closed, cutting off the connection between the oil return tank and the cooling tank, the cooling oil that has been cooled well passes through the closed loop oil way and the cooling oil way in the screw, part of which returns to the oil tank for storage, and part of which stays in the screw for cooling, when the liquid level is low, the liquid level detector sends a signal to close the third liquid pipe, and the first liquid pump works in the forward direction to continue cooling, achieving automatic circulation.

[0016] 3、The built-in circulating cooling system ball screw pair, through the nut and screw rod cooperation realizes the transmission function of ball screw pair, the compressed gas tank provides compressed gas, the lubricating oil tank stores lubricating oil, the mixing bin mixes compressed gas and lubricating oil to form lubricating spray, the nozzle sprays the lubricating spray to the screw rod surface uniformly, realizes the lubrication of the screw rod, reduces the friction, reduces the abrasion, a plurality of nozzles arranged in annular array can spray lubricating spray to the screw rod surface from different directions at the same time, ensures that each part of the screw rod surface can be fully lubricated, improves the lubricating effect, at the same time, when the lubricating spray covers the screw rod surface, the cooling oil in the screw rod internal passage can also carry out synchronous cooling effect, so that the lubricating spray can maintain in a normal temperature range, prolongs the lubricating effect, avoids the influence of gas cooling heat dissipation on the lubricating spray in the conventional technology. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole three-dimensional structure schematic diagram of the application; Figure 2 It is the three-dimensional structure schematic diagram of the cooling mechanism of the application; Figure 3 It is the sectional structure schematic diagram of the cooling mechanism of the application; Figure 4 It is the three-dimensional structure schematic diagram of the circulating mechanism of the application; Figure 5 It is the disassembled structure schematic diagram of the circulating mechanism of the application; Figure 6 It is the three-dimensional structure schematic diagram of the lubricating mechanism of the application; Figure 7 It is the disassembled structure schematic diagram of the lubricating mechanism of the application.

[0018] Mark explanation: 1, cooling mechanism;2, circulating mechanism;3, lubricating mechanism;101, screw rod;102, closed loop oil circuit;103, cooling oil circuit;104, oil inlet pipe;105, oil outlet pipe;106, oil tank;107, first liquid pump;201, temperature control valve;202, oil return tank;203, first liquid pipe;204, cooling tank;205, heat exchange plate;206, heat absorption end;207, conductor group;208, heat release end;209, mounting plate;210, fan;211, second liquid pump;212, second liquid pipe;213, storage tank;214, third liquid pipe;215, temperature detector;216, liquid level detector;217, heat blocking plate;301, nut;302, compressed gas tank;303, lubricating oil tank;304, mixing bin;305, nozzle. DETAILED DESCRIPTION

[0019] The specific embodiment of the application will be described in further detail below with reference to the drawings. EMBODIMENT

[0020] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 And Figure 7 The invention provides a technical scheme: a ball screw pair with built-in circulating cooling system, comprising a cooling mechanism 1, the left side of the cooling mechanism 1 is provided with circulating mechanism 2, the outer side of the cooling mechanism 1 is provided with lubricating mechanism 3, the lubricating mechanism 3 is movably connected with the outer surface of the cooling mechanism 1, the right side of the circulating mechanism 2 is fixedly connected with the left side of the cooling mechanism 1, the used cooling oil with rising temperature is cooled by the circulating mechanism 2 after being cooled by the cooling mechanism 1, and then is sent back to the cooling mechanism 1, and meanwhile, the lubricating mechanism 3 can achieve better operation effect with the assistance of the cooling mechanism 1; The cooling mechanism 1 comprises a screw rod 101, the inside of the screw rod 101 is provided with a closed loop oil way 102 on the left and right sides, respectively, the inside of the screw rod 101 is provided with a cooling oil way 103, the cooling oil way 103 is provided with a plurality of cooling oil ways 103, the plurality of cooling oil ways 103 are arranged in a ring array with the screw rod 101 as the center, and the left and right sides of the plurality of cooling oil ways 103 are respectively matched with the outer side of the closed loop oil way 102, the closed loop oil way 102 and the cooling oil way 103 are arranged in the screw rod 101, and a complete cooling medium circulation channel is formed, wherein the cooling oil way 103 branches the cooling oil coming from the closed loop oil way 102 through a small channel, and the cooling oil passes through the outer inner layer of the screw rod 101, so that the cooling oil can be cooled from inside to outside, and the inner center position of the screw rod 101 is cooled, the cooling radiation range is expanded, the cooling speed is accelerated, the screw rod 101 is effectively cooled, and the working stability and service life of the ball screw pair are improved; The circulating mechanism 2 comprises a temperature control valve 201, the left side of the temperature control valve 201 is fixedly connected with an oil return tank 202, the outer side of the oil return tank 202 is fixedly connected with a first liquid pipe 203, the left side of the first liquid pipe 203 is fixedly connected with a cooling tank 204, the front surface of the cooling tank 204 is provided with a groove, the groove is fixedly connected with a heat exchange plate 205, the front surface of the heat exchange plate 205 is provided with a conductor group 207, the back surface of the conductor group 207 is fixedly connected with a heat absorption end 206, the back surface of the heat absorption end 206 is fixedly connected with the front surface of the heat exchange plate 205, the front surface of the conductor group 207 is fixedly connected with a heat release end 208, the temperature control valve 201 can automatically control the flow direction according to the temperature of the cooling medium, intelligent cooling control is realized, the oil return tank 202 is used for collecting the cooling medium flowing back from the cooling mechanism 1, when the temperature of the cooling oil in the lead screw 101 is relatively high, the temperature control valve 201 is opened, the cooling oil with a relatively high temperature is transported into the oil return tank 202, and the cooling oil with a relatively high temperature is transported into the cooling tank 204 through the first liquid pipe 203, when the temperature is relatively low, the temperature control valve 201 is closed, at this time, through direct current input of the conductor group 207, the potential energy of electrons in the current is exchanged at the interface of the two materials, the electrons migrate from the high-concentration area to the low-concentration area, and the interface exchanges energy with the outside, so that the heat absorption end 206 can absorb heat through the heat exchange plate 205 as a temperature exchange, the cooling oil in the cooling tank 204 is cooled, and the temperature is released through the heat release end 208.

[0021] As shown in Figure 1 , Figure 2 and Figure 3 , the right side of the lead screw 101 is fixedly connected with an oil inlet pipe 104, the right side of the oil inlet pipe 104 is provided with an oil tank 106, the left side of the oil tank 106 is fixedly connected with a first liquid pump 107, the left side of the first liquid pump 107 is fixedly connected with the right side of the oil inlet pipe 104, the left side of the lead screw 101 is fixedly connected with an oil outlet pipe 105, the right side of the closed loop oil circuit 102 is matched with the oil inlet pipe 104, the left side of the closed loop oil circuit 102 is matched with the oil outlet pipe 105, the oil tank 106 is used for storing the cooling medium, the first liquid pump 107 provides power, pumps the cooling medium in the oil tank 106 into the closed loop oil circuit 102 in the lead screw 101 through the oil inlet pipe 104, after the cooling medium circulates in the lead screw 101, the cooling medium flows out through the oil outlet pipe 105, the circulation of the cooling medium is realized, and the lead screw 101 is continuously cooled.

[0022] As shown in Figure 1 , Figure 4 and Figure 5As shown, the right side of the oil return tank 202 is fixedly connected with the left side of the oil outlet pipe 105, the left side of the cooling tank 204 is fixedly connected with the mounting plate 209, the right side of the mounting plate 209 is fixedly connected with the fan 210, the right side of the fan 210 is matched with the heat dissipation end 208, the oil return tank 202 collects the cooling medium flowing out of the oil outlet pipe 105 for subsequent treatment and recycling, the fan 210 blows air to the heat dissipation end 208 to accelerate the flow of air around the heat dissipation end 208, improve the heat dissipation efficiency, enhance the cooling effect, and enable the cooling medium to be cooled faster and reused.

[0023] As shown in Figure 1 , Figure 4 and Figure 5 , the left side of the cooling tank 204 is fixedly connected with the second liquid pump 211, the left side of the second liquid pump 211 is fixedly connected with the second liquid pipe 212, and the right side of the second liquid pipe 212 is fixedly connected with the storage tank 213. The second liquid pump 211 provides power to deliver the cooling medium in the cooling tank 204 to the storage tank 213 through the second liquid pipe 212 to realize storage and distribution of the cooling medium. The second liquid pipe 212 is provided with a check valve to prevent the cooled cooling oil from flowing back.

[0024] As shown in Figure 1 , Figure 4 and Figure 5 , the front of the storage tank 213 is fixedly connected with the heat-resistant plate 217, and the front of the heat-resistant plate 217 is fixedly connected with the back of the cooling tank 204. The heat-resistant plate 217 plays a heat insulation role to prevent heat in the cooling tank 204 from being transmitted to the storage tank 213, ensure the temperature stability of the cooling medium in the storage tank 213, and avoid affecting the cooling effect due to temperature rise.

[0025] As shown in Figure 1 , Figure 4 and Figure 5 , the right side of the storage tank 213 is fixedly connected with the third liquid pipe 214, the right side of the third liquid pipe 214 is fixedly connected with the left side of the oil return tank 202, and the third liquid pipe 214 forms a channel between the storage tank 213 and the oil return tank 202. When the cooling medium in the storage tank 213 needs to be supplemented to the circulating system, the flow of the cooling medium can be realized through the third liquid pipe 214. The third liquid pipe 214 is in a closed state by default to prevent liquid from entering the storage tank 213 from the oil return tank 202 and to prevent the stored cooling oil in the storage tank 213 from flowing out before the release condition is met.

[0026] As shown in Figure 1 , Figure 4 and Figure 5As shown, the inside of the storage tank 213 is fixedly connected with a liquid level detector 216, the inside of the cooling tank 204 is fixedly connected with a temperature detector 215, the liquid level detector 216 is electrically connected with the third liquid pipe 214, the liquid level detector 216 is electrically connected with the first liquid pump 107, the liquid level detector 216 is electrically connected with the first liquid pipe 203, the temperature detector 215 is electrically connected with the second liquid pump 211, the temperature detector 215 is used for detecting the cooling oil temperature in the cooling tank 204, when the cooling oil temperature decreases to a normal use temperature, the second liquid pump 211 is opened, the cooling oil in the inside which has completed cooling is pumped out, at the same time, the liquid level detector 216 is used for detecting the liquid level of the cooling oil in the inside which has completed cooling, when the liquid level is high, the liquid level detector 216 sends an electrical signal to open the third liquid pipe 214, at the same time, the first liquid pump 107 is reversely operated, and the first liquid pipe 203 is closed, the connection between the oil return tank 202 and the cooling tank 204 is cut off, the cooling oil which has been cooled is passed through the closed loop oil way 102 and the cooling oil way 103 in the lead screw 101, part of which is returned to the oil tank 106 for storage, and part of which stays in the inside of the lead screw 101 for cooling, when the liquid level is low, the liquid level detector 216 sends a signal to close the third liquid pipe 214, and the first liquid pump 107 is positively operated to continue cooling, so as to achieve automatic circulation.

[0027] As shown in Figure 1 , Figure 6 and Figure 7 , the lubricating mechanism 3 comprises a nut 301, the nut 301 is threadedly connected with the lead screw 101, the outside of the nut 301 is fixedly connected with a compressed gas tank 302, the outside of the nut 301 is fixedly connected with a lubricating oil tank 303, the outer surface of the nut 301 is fixedly connected with a mixing bin 304, the outside of the mixing bin 304 is fixedly connected with the compressed gas tank 302 and the lubricating oil tank 303 respectively, the outside of the mixing bin 304 is fixedly connected with a nozzle 305, the nut 301 cooperates with the lead screw 101 to realize the transmission function of the ball screw pair, the compressed gas tank 302 provides compressed gas, the lubricating oil tank 303 stores lubricating oil, the mixing bin 304 mixes the compressed gas and the lubricating oil to form lubricating spray, the nozzle 305 uniformly sprays the lubricating spray to the surface of the lead screw 101, realizes the lubrication of the lead screw 101, reduces friction and wear.

[0028] As shown in Figure 1 , Figure 6 and Figure 7As shown, the nozzles 305 are provided in multiple, the multiple nozzles 305 are arranged in a ring array with the mixing bin 304 as the center, the output ends of the multiple nozzles 305 are all matched with the same screw rod 101, the multiple nozzles 305 arranged in a ring array can simultaneously spray lubricating spray to the surface of the screw rod 101 from different directions, ensuring that each part of the surface of the screw rod 101 can be fully lubricated, improving the lubricating effect, at the same time, when the lubricating spray covers the surface of the screw rod 101, it can also be cooled synchronously by the cooling oil in the internal passage of the screw rod 101, so that the lubricating spray can be maintained in a normal temperature range, prolonging the lubricating effect, avoiding the influence of air cooling heat dissipation on the lubricating spray in the conventional technology.

[0029] In use, the closed loop oil circuit 102 and the cooling oil circuit 103 are arranged in the lead screw 101 to form a complete cooling medium circulation channel, wherein the cooling oil in the closed loop oil circuit 102 is branched through a small channel by the cooling oil circuit 103, flows out from the outer inner layer of the lead screw 101, and can be cooled from the inside to the outside, while the inner center position of the lead screw 101 is cooled, the heat radiation range is expanded, the heat dissipation speed is accelerated, the lead screw 101 is effectively cooled, and the working stability and service life of the ball screw pair are improved. The oil tank 106 is used to store the cooling medium, the first liquid pump 107 provides power, the cooling medium in the oil tank 106 is pumped into the closed loop oil circuit 102 in the lead screw 101 through the oil inlet pipe 104, and after the cooling medium circulates in the lead screw 101, it flows out through the oil outlet pipe 105 to realize the circulation of the cooling medium and continuously cool the lead screw 101.The temperature control valve 201 can automatically control the flow direction of the cooling medium according to the temperature of the cooling medium, realize intelligent cooling control, the oil return tank 202 is used for collecting the cooling medium flowing back from the cooling mechanism 1, when the temperature of the cooling oil in the lead screw 101 is higher, the temperature control valve 201 opens, the cooling oil with higher temperature is transported into the oil return tank 202, and the cooling oil with higher temperature is transported into the cooling tank 204 through the first liquid pipe 203, when the temperature is lower, the temperature control valve 201 is closed, at this time, through the direct current input of the conductor group 207, the potential energy exchange of electrons in the current occurs at the interface of the two materials, due to the different carrier concentrations of the two materials, the electrons migrate from the high concentration area to the low concentration area, and exchange energy with the outside through the interface, so that the heat absorbing end 206 can absorb heat through the heat exchange plate 205 as a temperature exchange, cool the cooling oil in the cooling tank 204, and release the temperature through the heat releasing end 208, the oil return tank 202 collects the cooling medium flowing out of the oil outlet pipe 105 for subsequent treatment and recycling, the fan 210 blows air to the heat releasing end 208 to accelerate the flow of air around the heat releasing end 208, improve the heat dissipation efficiency, enhance the cooling effect, so that the cooling medium can be cooled faster and reused, the second liquid pump 211 provides power, and the cooling medium in the cooling tank 204 is transported to the storage tank 213 through the second liquid pipe 212 to realize the storage and distribution of the cooling medium, the check valve is built in the second liquid pipe 212 to avoid the backflow of the cooled cooling oil, the heat blocking plate 217 plays a heat insulation role to prevent the heat in the cooling tank 204 from being transmitted to the storage tank 213, ensure the temperature stability of the cooling medium in the storage tank 213, and avoid affecting the cooling effect due to temperature rise, when the cooling medium in the storage tank 213 needs to be supplemented to the circulating system, the flow of the cooling medium can be realized through the third liquid pipe 214, the third liquid pipe 214 is in the default closed state to prevent liquid from entering the storage tank 213 from the oil return tank 202, and also prevent the stored cooling oil in the storage tank 213 from flowing out before the release condition is reached, the temperature detector 215 is used to detect the temperature of the cooling oil in the cooling tank 204, when the temperature of the cooling oil decreases to a normal use temperature, the second liquid pump 211 is opened to pump out the cooling oil that has been cooled in the interior, at the same time, the liquid level detector 216 is used to detect the liquid level of the cooling oil that has been cooled in the storage tank 213, when the liquid level is high, the liquid level detector 216 sends an electric signal to open the third liquid pipe 214, and reversely operates the first liquid pump 107 and closes the first liquid pipe 203 to cut off the connection between the oil return tank 202 and the cooling tank 204, so that the cooled cooling oil passes through the closed loop oil way 102 and the cooling oil way 103 in the lead screw 101, part of which is stored in the oil tank 106, and part of which stays in the lead screw 101 for cooling, when the liquid level is low, the liquid level detector 216 sends a signal to close the third liquid pipe 214 and make the first liquid pump 107 work in the forward direction to continue cooling, and realize automatic circulation.The nut 301 cooperates with the screw rod 101 to realize the transmission function of the ball screw pair, the compressed gas tank 302 provides compressed gas, the lubricating oil tank 303 stores lubricating oil, the mixing bin 304 mixes the compressed gas and the lubricating oil to form lubricating spray, and the nozzle 305 uniformly sprays the lubricating spray to the surface of the screw rod 101, realizes the lubrication of the screw rod 101, reduces the friction, reduces the wear, and the plurality of nozzles 305 arranged in the annular array can spray the lubricating spray to the surface of the screw rod 101 from different directions at the same time, ensures that each part of the surface of the screw rod 101 can be fully lubricated, improves the lubricating effect, simultaneously, when the lubricating spray covers the surface of the screw rod 101, can also realize the synchronous cooling effect through the cooling oil in the internal passage of the screw rod 101, makes the lubricating spray can maintain in a normal temperature range, prolongs the lubricating effect, avoids the influence of the gas cooling heat dissipation on the lubricating spray in the conventional technology.

[0030] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A ball screw pair with built-in circulation cooling system, comprising a cooling mechanism (1), characterized in that: The left side of the cooling mechanism (1) is provided with a circulating mechanism (2), the outer side of the cooling mechanism (1) is provided with a lubricating mechanism (3), the lubricating mechanism (3) is movably connected with the outer surface of the cooling mechanism (1), and the right side of the circulating mechanism (2) is fixedly connected with the left side of the cooling mechanism (1). The cooling mechanism (1) comprises a lead screw (101), the inside of the lead screw (101) is provided with a closed loop oil path (102) on the left side and the right side, respectively, and the inside of the lead screw (101) is provided with a cooling oil path (103); a plurality of cooling oil paths (103) are arranged in a ring array around the lead screw (101), and the left side and the right side of the plurality of cooling oil paths (103) are matched with the outer side of the closed loop oil path (102), respectively. The circulating mechanism (2) comprises a temperature control valve (201), the left side of the temperature control valve (201) is fixedly connected with an oil return tank (202), the outer side of the oil return tank (202) is fixedly connected with a first liquid pipe (203), the left side of the first liquid pipe (203) is fixedly connected with a cooling tank (204), the front surface of the cooling tank (204) is provided with a groove, the groove is fixedly connected with a heat exchange plate (205), the front surface of the heat exchange plate (205) is provided with a conductor group (207), the back surface of the conductor group (207) is fixedly connected with a heat absorption end (206), the back surface of the heat absorption end (206) is fixedly connected with the front surface of the heat exchange plate (205), and the front surface of the conductor group (207) is fixedly connected with a heat release end (208).

2. A recirculating ball screw assembly according to claim 1, wherein: The right side of the lead screw (101) is fixedly connected with an oil inlet pipe (104), the right side of the oil inlet pipe (104) is provided with an oil tank (106), the left side of the oil tank (106) is fixedly connected with a first liquid pump (107), the left side of the first liquid pump (107) is fixedly connected with the right side of the oil inlet pipe (104), the left side of the lead screw (101) is fixedly connected with an oil outlet pipe (105), the right side of the closed loop oil path (102) is matched with the oil inlet pipe (104), and the left side of the closed loop oil path (102) is matched with the oil outlet pipe (105).

3. The recirculating ball screw assembly of claim 1, wherein: The right side of the oil return tank (202) is fixedly connected with the left side of the oil outlet pipe (105), the left side of the cooling tank (204) is fixedly connected with a mounting plate (209), the right side of the mounting plate (209) is fixedly connected with a fan (210), and the right side of the fan (210) is matched with the heat release end (208).

4. The recirculating ball screw assembly of claim 1, wherein: The left side of the cooling tank (204) is fixedly connected with a second liquid pump (211), the left side of the second liquid pump (211) is fixedly connected with a second liquid pipe (212), and the right side of the second liquid pipe (212) is fixedly connected with a storage tank (213).

5. A recirculating ball screw assembly according to claim 4, wherein: The front surface of the storage tank (213) is fixedly connected with a heat blocking plate (217), and the front surface of the heat blocking plate (217) is fixedly connected with the back surface of the cooling tank (204).

6. A recirculating ball screw assembly of claim 4, wherein: The right side of the storage tank (213) is fixedly connected with a third liquid pipe (214), and the right side of the third liquid pipe (214) is fixedly connected with the left side of the oil return tank (202).

7. A recirculating ball screw assembly according to claim 5, wherein: The inside of the storage tank (213) is fixedly connected with a liquid level detector (216), and the inside of the cooling tank (204) is fixedly connected with a temperature detector (215); the liquid level detector (216) is electrically connected with the third liquid pipe (214), the liquid level detector (216) is electrically connected with the first liquid pump (107), the liquid level detector (216) is electrically connected with the first liquid pipe (203), and the temperature detector (215) is electrically connected with the second liquid pump (211).

8. The recirculating ball screw assembly of claim 1, wherein: The lubricating mechanism (3) comprises a nut (301), the nut (301) is in threaded connection with the screw rod (101), the outer side of the nut (301) is fixedly connected with a compressed gas tank (302), the outer side of the nut (301) is fixedly connected with a lubricating oil tank (303), the outer surface of the nut (301) is fixedly connected with a mixing bin (304), the outer side of the mixing bin (304) is fixedly connected with the compressed gas tank (302) and the lubricating oil tank (303) respectively, and the outer side of the mixing bin (304) is fixedly connected with a nozzle (305).

9. A recirculating ball screw assembly according to claim 8, wherein: A plurality of nozzles (305) are arranged in a ring array around the mixing bin (304), and the output ends of the plurality of nozzles (305) are all adapted to the same screw rod (101).

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