Lead screw pair cooling mechanism and cooling control method

Abstract

The invention discloses a lead screw pair cooling mechanism and a cooling control method. The lead screw pair cooling mechanism comprises a lead screw, a rear cooling plate and a cooling generation device. An axial coolant inlet channel is arranged in the screw rod, and a plurality of coolant backflow channels are uniformly arranged around the screw rod; one end of the screw rod is rotationally connected with the rear cooling plate, and the coolant inlet channel and the coolant return channel are communicated in the other end; the rear cooling plate is provided with a rear coolant backflow groove for communicating the plurality of coolant backflow channels, and is provided with a rear coolant inlet hole for communicating the coolant inlet channel; the rear cooling plate is provided with a rear coolant backflow hole communicated with the rear coolant backflow groove, and the rear coolant backflow hole and the rear coolant inlet hole are respectively connected with the cooling generation device through pipelines. According to the lead screw pair cooling mechanism and the cooling control method, the cooling channel arranged in the lead screw is connected with the cooling generation device, cooling medium circulation is dynamically adjusted, efficient heat dissipation is achieved, stable performance of the lead screw is guaranteed, and the service life of the lead screw is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical transmission, and in particular to a screw pair cooling mechanism and a cooling control method. Background Art

[0002] The screw pair has precise movement, low noise and high accuracy, and has been widely used in various occasions. In some sports occasions, the operating load of the screw pair is large and the operating frequency is fast. Under high-speed and heavy-load conditions, it is easy to cause performance degradation due to frictional heat and short service life. Traditional cooling methods are inefficient and complex in structure.

[0003] The present invention solves the above technical problems by optimizing the cooling structure and closed-loop control. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a screw pair cooling mechanism and a cooling control method, which dynamically adjusts the circulation of cooling medium by connecting a cooling channel arranged inside the screw with a cooling generating device, realizes efficient heat dissipation, ensures stable performance of the screw and extends the service life of the screw.

[0005] To achieve the above object, the technical solution of the present invention is: A screw rod pair cooling mechanism, comprising a screw rod, a rear cooling plate and a cooling generating device; An axial coolant inlet channel is provided in the screw rod, and a plurality of coolant return channels are evenly provided around the screw rod; one end of the screw rod is rotatably connected to the rear cooling plate, and the coolant inlet channel and the coolant return channel are connected to each other inside the other end; The rear cooling plate is provided with a rear coolant reflux groove to connect the plurality of the coolant reflux channels, and is provided with a rear coolant inlet hole to connect the coolant inlet channels; The rear cooling plate is provided with a rear coolant reflux hole connected to the rear coolant reflux groove, and the rear coolant reflux hole and the rear coolant inlet hole are respectively connected to the cooling generating device through pipelines.

[0006] The screw rod pair cooling mechanism is connected to a cooling channel and a cooling generating device by arranging a coolant inlet channel and a coolant return channel inside the screw rod, driving the cooling medium to circulate between the cooling channel and the cooling generating device, achieving efficient heat dissipation, ensuring stable screw rod performance and extending the service life of the screw rod.

[0007] A further optimized solution further includes a seal, which separates the coolant inlet channel from the coolant return channel and seals the cooling medium therein. The setting of the seal prevents leakage of the cooling medium and avoids the cooling medium in the inlet channel and the return channel from flowing into each other and affecting the cooling effect.

[0008] A further optimized solution further includes a front cooling plate, which is arranged on the other end of the screw rod opposite to the rear cooling plate and is fixedly connected to the screw rod; the coolant inlet channel and the coolant return channel are interconnected in the rear cooling plate. The arrangement of the front cooling plate facilitates the processing and manufacturing of the coolant inlet channel and the coolant return channel in the screw rod, and also facilitates the processing of the connecting channel between the coolant inlet channel and the coolant return channel on the front cooling plate.

[0009] In a further optimized solution, a rear coolant connection hole is provided between the rear coolant inlet hole and the coolant inlet channel on the rear cooling plate, and the diameter of the rear coolant connection hole is larger than the rear coolant inlet hole and is adapted to the coolant inlet channel. The diameter of the rear coolant connection hole is larger than the rear coolant inlet hole, which is conducive to the cooling medium in the rear coolant inlet hole to smoothly enter the coolant inlet channel, avoiding backflow caused by high inlet pressure.

[0010] A further optimized solution is that a plurality of front coolant return holes and front coolant inlet holes are provided on the front cooling plate; the front coolant return holes are connected to the coolant return channels one by one, and the front coolant inlet holes are connected to the coolant inlet channels; the front coolant return holes are connected to the front coolant inlet holes.

[0011] According to a further optimization scheme, the front cooling plate is provided with a front coolant inlet hole and a front coolant return groove which are interconnected; the front coolant inlet hole is connected to the coolant inlet channel, and the front coolant return groove is connected to the coolant return channel.

[0012] A further optimized solution also includes a screw nut, a temperature detection device and a control system; the screw nut is installed on the screw, and the temperature detection device is arranged on the screw nut; the control system signal connects the temperature detection device and the cooling device to realize automatic opening and closing of the cooling device.

[0013] The temperature of the screw nut is monitored in real time by a temperature detection device, and the control system is set up to achieve automatic control.

[0014] A further optimized solution also includes a supporting platform, a rear fixed plate and a front fixed plate, wherein the rear fixed plate and the front fixed plate are respectively arranged on the supporting platform, the rear fixed plate is rotatably connected to one end of the screw rod through a first bearing module, and the front fixed plate is rotatably connected to the other end of the screw rod through a second bearing module.

[0015] A further optimized solution also includes a movable plate and a linear guide rail, wherein the movable plate is arranged on the linear guide rail and moves linearly along the linear guide rail, and the lead screw nut is arranged on the movable plate.

[0016] A screw pair cooling control method, using the above screw pair cooling mechanism, comprises the following steps: 1) Real-time monitoring of the temperature of the screw nut by the temperature detection device; 2) When the temperature exceeds the set value T0, the control system starts the cooling device, drives the cooling medium to enter the coolant inlet channel of the screw rod through the rear cooling plate, and returns to the cooling device through the coolant return channel; 3) Circulate cooling until the temperature is lower than T0 and stop the cooling medium output.

[0017] Compared with the prior art, the present invention has the following technical advantages: 1. The screw rod pair cooling mechanism is connected to the cooling channel and the cooling generating device by arranging a coolant inlet channel and a coolant return channel inside the screw rod, driving the cooling medium to circulate between the cooling channel and the cooling generating device, achieving efficient heat dissipation, ensuring the stable performance of the screw rod and extending the service life of the screw rod; 2. The control system connects the temperature detection device and the cooling device to realize automatic opening and closing of the cooling device, automatic control, and timely and accurate temperature regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of a specific embodiment of the screw rod pair cooling mechanism of the present invention; Figure 2 yes Figure 1 A side cross-sectional view of Figure 3 yes Figure 1 Front view of the middle and rear cooling plate; Figure 4 yes Figure 3 A side cross-sectional view of Figure 5 yes Figure 1 Front view of the middle front cooling plate; Figure 6 yes Figure 5 A side cross-sectional view of Figure 7 yes Figure 1 A front view of a front cooling plate of another structure; Figure 8 yes Figure 7 A side cross-sectional view of Fig. 9 yes Figure 1 Schematic diagram of the cooling medium circulation direction.

[0019] In the figure: control system 1, signal line 2, bearing 3, rear cooling plate 4, first cooling joint 5, second cooling joint 6, first cooling pipe 7, second cooling pipe 8, cooling generating device 9, supporting platform 10, synchronous pulley 11, first bearing module 12, rear fixing plate 13, screw 14, coolant inlet channel 15, coolant return channel 16, temperature detection device 17, screw nut 18, movable plate 19, linear guide 20, second bearing module 21, front fixing plate 22, front cooling plate 23, motor 24, synchronous belt 25; seal 26, rear coolant reflux groove 27, rear coolant reflux hole 28, rear coolant connection hole 29, rear coolant inlet hole 30, front coolant reflux hole 31, front coolant inlet hole 32, front coolant reflux groove 33, cooling medium 34. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the embodiments in the accompanying drawings.

[0021] like Figures 1 to 9 As shown, a specific embodiment of the screw pair cooling mechanism of the present invention.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, the screw rod pair cooling mechanism of this embodiment includes a screw rod 14, a rear cooling plate 4 and a cooling generating device 9; an axial coolant inlet channel 15 is provided in the screw rod 14, and four coolant return channels 15 are evenly provided around the screw rod 14; one end of the screw rod 14 is rotatably connected to the rear cooling plate 4 through the bearing 3, and the coolant inlet channel 15 and the coolant return channel 15 are connected to each other inside the other end. Among them, the inner ring of the bearing 3 rotates with the screw rod 14, and the outer ring of the bearing 3 and the rear cooling plate 4 remain fixed.

[0023] like Figure 3 and Figure 4 As shown, the rear cooling plate 4 is provided with a rear coolant return groove 27 to connect a plurality of coolant return channels 15, and a rear coolant inlet hole 30 is provided to connect the coolant inlet channel 15. The rear cooling plate 4 is provided with a rear coolant return hole 28 to connect the rear coolant return groove 27, and the rear coolant return hole 28 and the rear coolant inlet hole 30 are connected to the cooling generating device 9 through the first cooling joint 5, the first cooling pipe 7 and the second cooling joint 6, the second cooling pipe 8 respectively.

[0024] The screw pair cooling mechanism is connected to the cooling channel by arranging a coolant inlet channel 15 and a coolant return channel 15 inside the screw 14, driving the cooling medium 34 to circulate between the cooling channel and the cooling generating device 9, thereby achieving efficient heat dissipation, ensuring the stable performance of the screw 14 and extending the service life of the screw 14.

[0025] like Figure 1 As shown, the screw rod pair cooling mechanism further includes a front cooling plate 23, which is arranged on the other end of the screw rod 14 opposite to the rear cooling plate 4 and is fixedly connected to the screw rod 14; the coolant inlet channel 15 and the coolant return channel 15 are interconnected in the rear cooling plate 4. The arrangement of the front cooling plate 23 facilitates the processing and manufacturing of the coolant inlet channel 15 and the coolant return channel 15 in the screw rod 14, and also facilitates the processing of the connecting channel between the coolant inlet channel 15 and the coolant return channel 15 on the front cooling plate 23.

[0026] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the screw pair cooling mechanism also includes a plurality of seals 26, which separate the coolant inlet channel 15 from the coolant return channel 15 and seal the cooling medium 34 therein. The setting of the seals 26 prevents leakage of the cooling medium 34, and avoids the cooling medium 34 in the inlet channel and the return channel from flowing into each other and affecting the cooling effect.

[0027] like Figure 1 , Figure 3 and Figure 4 As shown, a rear coolant connection hole 29 is provided between the rear coolant inlet hole 30 and the coolant inlet channel 15 on the rear cooling plate 4. The diameter of the rear coolant connection hole 29 is larger than the rear coolant inlet hole 30 and is adapted to the coolant inlet channel 15. The larger diameter of the rear coolant connection hole 29 than the rear coolant inlet hole 30 is conducive to the cooling medium 34 in the rear coolant inlet hole 30 to smoothly enter the coolant inlet channel 15, avoiding backflow caused by high inlet pressure.

[0028] like Figure 5 and Figure 6 As shown, four front coolant return holes 31 and front coolant inlet holes 32 are provided on the front cooling plate 23; the front coolant return holes 31 are connected to the coolant return channels 15 one by one, and the front coolant inlet holes 32 are connected to the coolant inlet channels 15; the front coolant return holes 31 are connected to the front coolant inlet holes 32.

[0029] like Figure 7 and Figure 8 As shown, another structure of the front cooling plate 23: the front cooling plate 23 is provided with a front coolant inlet hole 32 and a front coolant return groove 33 which are interconnected; the front coolant inlet hole 32 is connected to the coolant inlet channel 15, and the front coolant return groove 33 is connected to the coolant return channel 15.

[0030] like Figure 1As shown, the screw pair cooling mechanism also includes a screw nut 18, a temperature detection device 17 and a control system 1; the screw nut 18 is installed on the screw 14, and the temperature detection device 17 is arranged on the screw nut 18; the control system 1 is connected to the temperature detection device 17 and the cooling generating device 9 through the signal line 2 respectively to realize the automatic opening and closing of the cooling generating device 9.

[0031] The temperature of the screw nut 18 is monitored in real time by the temperature detection device 17 , and the setting of the control system 1 realizes automatic control.

[0032] like Figure 1 As shown, the screw pair cooling mechanism also includes a supporting platform 10, a rear fixing plate 13 and a front fixing plate 22. The rear fixing plate 13 and the front fixing plate 22 are respectively arranged on the supporting platform 10. The rear fixing plate 13 is rotatably connected to one end of the screw 14 through the first bearing module 12, and the front fixing plate 22 is rotatably connected to the other end of the screw 14 through the second bearing module 21.

[0033] like Figure 1 As shown, the screw pair cooling mechanism also includes a movable plate 19 and a linear guide rail 20 . The movable plate 19 is disposed on the linear guide rail 20 and moves linearly along the linear guide rail 20 . The screw nut 18 is disposed on the movable plate 19 , and the linear guide rail 20 is disposed on the supporting platform 10 .

[0034] like Figure 1 As shown, the screw 14 of the screw pair cooling mechanism is provided with a synchronous pulley 11, which is located between the rear fixing plate 13 and the rear cooling plate 4. Figure 2 As shown, the motor 24 is fixed on the rear fixed plate 13, the synchronous pulley 11 is rotated by the motor 24 and the synchronous belt 25, thereby driving the screw 14 to rotate, and the movable plate 19 is driven to move linearly on the linear guide rail 20 through the transmission of the screw nut 18.

[0035] A screw pair cooling control method, using the screw pair cooling mechanism, the cooling medium 34 circulation direction is as follows Fig. 9 As shown, the following steps are included: 1) Real-time monitoring of the temperature of the screw nut 18 by the temperature detection device 17; 2) When the temperature exceeds the set value T0, the control system 1 starts the cooling generating device 9, drives the cooling medium 34 to enter the coolant inlet channel 15 of the screw rod 14 through the rear cooling plate 4, flows through the front cooling plate 23, and returns to the cooling generating device 9 through the coolant return channel 15; 3) Circulate cooling until the temperature is lower than T0, and stop outputting the cooling medium 34.

[0036] The screw pair cooling mechanism and cooling control method have compact structure, precise control, and high heat dissipation efficiency, and can be widely used in high-precision screw transmission systems such as CNC machine tools and automation equipment, significantly extending the life of the screw and improving operational stability.

[0037] In summary, the present invention is as described in the specification and the illustrations, and actual samples are made and tested for multiple times. From the test results, it is proved that the invention can achieve the expected purpose and its practicality is beyond doubt. The above embodiments are only used to facilitate the description of the content of the invention, and are not formally limited to it; any equivalent embodiments made by partial changes or modifications made by anyone with common knowledge in the technical field of the invention without departing from the scope of the technical features and similar features of the present invention and using the technical content disclosed by the invention, all belong to the protection scope of the present invention.

Claims

1. A screw pair cooling mechanism, characterized in that: It comprises a screw rod (14), a rear cooling plate (4) and a cooling generating device (9); An axial coolant inlet channel (15) is provided in the screw rod (14), and a plurality of coolant return channels (16) are evenly provided around the screw rod; one end of the screw rod (14) is rotatably connected to the rear cooling plate (4), and the other end internally connects the coolant inlet channel (15) and the coolant return channel (16) to each other; The rear cooling plate (4) is provided with a rear coolant return groove (27) for connecting the plurality of coolant return channels (16), and is provided with a rear coolant inlet hole (30) for connecting the coolant inlet channel (15); The rear cooling plate (4) is provided with a rear coolant return hole (28) connected to the rear coolant return groove (27), and the rear coolant return hole (28) and the rear coolant inlet hole (30) are respectively connected to the cooling generating device (9) through pipelines.

2. The screw pair cooling mechanism according to claim 1 is characterized in that: It also includes a sealing member (26), wherein the sealing member (26) separates the coolant inlet channel (15) from the coolant return channel (16) and seals the cooling medium therein.

3. The screw pair cooling mechanism according to claim 1 or 2, characterized in that: It also includes a front cooling plate (23), which is arranged on the other end of the screw rod (14) opposite to the rear cooling plate (4) and is fixedly connected to the screw rod (14); the coolant inlet channel (15) and the coolant return channel (16) are interconnected in the rear cooling plate (4).

4. The screw pair cooling mechanism according to claim 1 is characterized in that: A rear coolant connection hole (29) that is interconnected is provided between the rear coolant inlet hole (30) and the coolant inlet channel (15) on the rear cooling plate (4); the diameter of the rear coolant connection hole (29) is larger than that of the rear coolant inlet hole (30) and is compatible with the coolant inlet channel (15).

5. The screw pair cooling mechanism according to claim 3 is characterized in that: The front cooling plate (23) is provided with a plurality of front coolant return holes (31) and front coolant inlet holes (32); the front coolant return holes (31) are connected to the coolant return channels (16) one by one, and the front coolant inlet holes (32) are connected to the coolant inlet channels (15); the front coolant return holes (31) are in communication with the front coolant inlet holes (32).

6. The screw pair cooling mechanism according to claim 3 is characterized in that: The front cooling plate (23) is provided with a front coolant inlet hole (32) and a front coolant return groove (33) which are connected to each other; the front coolant inlet hole (32) is connected to the coolant inlet channel (15), and the front coolant return groove (33) is connected to the coolant return channel (16).

7. The screw pair cooling mechanism according to claim 1 is characterized in that: It also includes a screw nut (18), a temperature detection device (17) and a control system (1); the screw nut (18) is mounted on the screw (14), and the temperature detection device (17) is arranged on the screw nut (18); the control system (1) connects the temperature detection device (17) and the cooling device (9) via a signal to realize automatic opening and closing of the cooling device (9).

8. The screw pair cooling mechanism according to claim 1, characterized in that: The invention also comprises a support platform (10), a rear fixing plate (13) and a front fixing plate (22), wherein the rear fixing plate (13) and the front fixing plate (22) are respectively arranged on the support platform (10), the rear fixing plate (13) is rotatably connected to one end of the screw rod (14) via a first bearing module (12), and the front fixing plate (22) is rotatably connected to the other end of the screw rod (14) via a second bearing module (21).

9. The screw pair cooling mechanism according to claim 7, characterized in that: It also includes a movable plate (19) and a linear guide rail (20), wherein the movable plate (19) is arranged on the linear guide rail (20) and moves linearly along the linear guide rail, and the lead screw nut (18) is arranged on the movable plate (19).

10. A screw pair cooling control method, characterized in that: The screw pair cooling mechanism according to claim 7 comprises the following steps: 1) real-time monitoring of the temperature of the screw nut (18) by means of the temperature detection device (17); 2) when the temperature exceeds a set value T0, the control system (1) starts the cooling generating device (9), drives the cooling medium to enter the coolant inlet channel (15) of the screw rod (14) through the rear cooling plate (4), and returns to the cooling generating device (9) through the coolant return channel (16); 3) Circulate cooling until the temperature is lower than T0 and stop the cooling medium output.

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