Lead screw pair cooling mechanism

Abstract

The utility model discloses a lead screw pair cooling mechanism which comprises a lead screw, a rear cooling plate and a cooling generating 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, the cooling channel arranged in the lead screw is connected with the cooling generation device, circulation of cooling media 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 utility model relates to mechanical drive technical field especially a screw rod pair cooling mechanism. BACKGROUND

[0002] Screw rod pair movement precision, low noise, high precision, has been widely applied in various occasions, under certain movement occasion, the running load of screw rod pair is big, running frequency is fast, under high speed heavy load working condition, easily causes the performance to decline because of friction heat, service life is short, and traditional cooling mode is low in efficiency and complex in structure.

[0003] The application solves the above technical problems by optimizing the cooling structure and closed-loop control. SUMMARY

[0004] The utility model discloses to the above technical problem provides a screw rod pair cooling mechanism, is connected with the cooling generation device through the cooling channel of setting in the screw rod, and dynamic adjustment cooling medium circulation realizes high -efficient heat dissipation, guarantees the stable performance of screw rod and prolongs the service life of screw rod.

[0005] To achieve the above object, the technical scheme of the utility model is:

[0006] A screw rod pair cooling mechanism, including the screw rod and screw rod nut that are connected and are arranged on the support platform, rear cooling plate and cooling generation device;

[0007] The screw rod is provided with an axial coolant inlet channel, and a plurality of coolant return channels are uniformly arranged around the screw rod;The one end of the screw rod is rotatably connected to the rear cooling plate, and the other end of the screw rod is internally connected to the coolant inlet channel and the coolant return channel;

[0008] The rear cooling plate is provided with a rear coolant return groove for connecting the plurality of coolant return channels, and is provided with a rear coolant inlet hole for connecting the coolant inlet channel.

[0009] The rear cooling plate is provided with a rear coolant return hole for connecting the rear coolant return groove, and the rear coolant return hole and the rear coolant inlet hole are respectively connected to the cooling generation device by pipelines.

[0010] The screw rod pair cooling mechanism is connected with the cooling generation device by setting the coolant inlet channel and the coolant return channel in the screw rod to form a cooling channel, drives the cooling medium to circulate between the cooling channel and the cooling generation device, realizes high -efficient heat dissipation, guarantees the stable performance of screw rod and prolongs the service life of screw rod.

[0011] Further optimization scheme, still includes sealing element, sealing element separates the coolant into the channel with the coolant return channel, and seals the cooling medium in it. The setting of the sealing element prevents the leakage of the cooling medium, avoids the mutual influence of the cooling effect of the cooling medium in the inlet channel and the return channel.

[0012] Further optimization scheme, still includes front cooling plate, the front cooling plate is arranged on the lead screw at the other end opposite to the rear cooling plate, and is fixedly connected with the lead screw; the coolant inlet channel and the coolant return channel are communicated with each other in the rear cooling plate. The setting of the front cooling plate facilitates the processing and manufacturing of the coolant inlet channel and the coolant return channel in the lead screw, and also facilitates the processing of the connecting channel of the coolant inlet channel and the coolant return channel on the front cooling plate.

[0013] Further optimization scheme, the rear cooling plate is provided with a rear cooling medium connecting hole communicated with the rear cooling medium inlet hole and the coolant inlet channel. The diameter of the rear cooling medium connecting hole is larger than that of the rear cooling medium inlet hole and is matched with the coolant inlet channel. The diameter of the rear cooling medium connecting hole is larger than that of the rear cooling medium inlet hole, which is beneficial to the smooth entry of the cooling medium in the rear cooling medium inlet hole into the coolant inlet channel, avoiding the backflow caused by large inlet pressure.

[0014] Further optimization scheme, the front cooling plate is provided with a plurality of front cooling medium return holes and front cooling medium inlet holes; the front cooling medium return holes are communicated with the coolant return channel one by one, and the front cooling medium inlet holes are communicated with the coolant inlet channel; the front cooling medium return holes and the front cooling medium inlet holes are communicated.

[0015] Further optimization scheme, the front cooling plate is provided with a front cooling medium inlet hole and a front cooling medium return groove communicated with each other; the front cooling medium inlet hole is communicated with the coolant inlet channel, and the front cooling medium return groove is communicated with the coolant return channel.

[0016] Further optimization scheme, still includes temperature detection device and control system; the lead screw nut is installed on the lead screw, the temperature detection device is arranged on the lead screw nut; the control system is signal connected with the temperature detection device and the cooling generating device to realize the automatic opening and closing of the cooling generating device.

[0017] The temperature detection device monitors the temperature of the lead screw nut in real time, and the setting of the control system realizes automatic control.

[0018] Further optimization scheme, still includes rear fixed plate and front fixed plate, the rear fixed plate and the front fixed plate are arranged on the support platform respectively, one end of the lead screw is rotatably connected with the rear fixed plate through the first bearing module, and the other end of the lead screw is rotatably connected with the front fixed plate through the second bearing module.

[0019] Further optimization scheme, it also includes movable plate and linear guide, movable plate is arranged on linear guide and linearly moves along it, screw rod nut is arranged on movable plate.

[0020] The utility model has the following technical advantages compared with prior art:

[0021] 1、 the screw rod pair cooling mechanism passes through setting coolant inlet channel and coolant backflow channel in screw rod inside and is connected with cooling channel and cooling generating device, drives cooling medium to circulate and flow between cooling channel and cooling generating device, realizes high -efficient heat dissipation, guarantees that screw rod performance is stable and prolongs screw rod life -span;

[0022] 2、 control system connects temperature detection device and cooling generating device and realizes the automatic opening and closing of cooling generating device, automatic control, realizes temperature regulation in time accurately. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the section view schematic diagram of one embodiment of the utility model screw rod pair cooling mechanism;

[0024] Figure 2 It is Figure 1 The side sectional view of;

[0025] Figure 3 It is Figure 1 The front cooling plate of another structure of;

[0026] Figure 4 It is Figure 3 The side sectional view of;

[0027] Figure 5 It is Figure 1 The front cooling plate of another structure of;

[0028] Figure 6 It is Figure 5 The side sectional view of;

[0029] Figure 7 It is Figure 1 The front cooling plate of another structure of;

[0030] Figure 8 It is Figure 7 The side sectional view of;

[0031] Figure 9 It is Figure 1 The schematic diagram of cooling medium circulation direction of;

[0032] In the diagram: 1. Control system; 2. Signal line; 3. Bearing; 4. Rear cooling plate; 5. First cooling connector; 6. Second cooling connector; 7. First cooling pipe; 8. Second cooling pipe; 9. Cooling generator; 10. Support platform; 11. Synchronous pulley; 12. First bearing module; 13. Rear fixed plate; 14. Lead screw; 15. Coolant inlet channel; 16. Coolant return channel; 17. Temperature detection device; 18. Lead screw nut; 19. Movable plate; 20. Linear guide rail; 21. Second bearing module; 22. Front fixed plate; 23. Front cooling plate; 24. Motor; 25. Synchronous belt; 26. Seal; 27. Rear coolant return channel; 28. Rear coolant return hole; 29. ​​Rear coolant connection hole; 30. Rear coolant inlet hole; 31. Front coolant return hole; 32. Front coolant inlet hole; 33. Front coolant return channel; 34. Cooling medium. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0034] like Figures 1 to 9 As shown, this is a specific embodiment of the lead screw pair cooling mechanism of this utility model.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, the lead screw cooling mechanism of this embodiment includes a lead screw 14, a rear cooling plate 4, and a cooling generating device 9. The lead screw 14 has an axial coolant inlet channel 15 and four coolant return channels 15 evenly distributed around its perimeter. One end of the lead screw 14 is rotatably connected to the rear cooling plate 4 via a bearing 3, and the other end internally connects the coolant inlet channel 15 and the coolant return channel 15. The inner ring of the bearing 3 rotates together with the lead screw 14, while the outer ring of the bearing 3 and the rear cooling plate 4 remain fixed.

[0036] like Figure 3 and Figure 4 As shown, the rear cooling plate 4 is provided with a rear coolant return channel 27 that connects several coolant return channels 15, and is provided with a rear coolant inlet hole 30 that connects to the coolant inlet channels 15. The rear cooling plate 4 is provided with a rear coolant return hole 28 that connects to the rear coolant return channel 27. The rear coolant return hole 28 and the rear coolant inlet hole 30 are respectively connected to the cooling generating device 9 through the first cooling connector 5, the first cooling pipe 7 and the second cooling connector 6, the second cooling pipe 8.

[0037] The lead screw cooling mechanism forms a cooling channel by setting a coolant inlet channel 15 and a coolant return channel 15 inside the lead screw 14, which is connected to the cooling generating device 9. The cooling medium 34 is driven to circulate between the cooling channel and the cooling generating device 9 to achieve efficient heat dissipation, ensure the stable performance of the lead screw 14 and extend the service life of the lead screw 14.

[0038] likeFigure 1 As shown in the drawings, the screw pair cooling mechanism further comprises a front cooling plate 23, which is arranged on the other end of the screw 14 opposite to the rear cooling plate 4 and fixedly connected with the screw 14; the coolant inlet channel 15 and the coolant return channel 15 are communicated with each other in the rear cooling plate 4. The arrangement of the front cooling plate 23 facilitates the machining of the coolant inlet channel 15 and the coolant return channel 15 in the screw 14, and also facilitates the machining of the connecting channel of the coolant inlet channel 15 and the coolant return channel 15 on the front cooling plate 23.

[0039] As shown in the drawings, Figure 3 , Figure 4 , Figure 5 and Figure 6 , the screw pair cooling mechanism further comprises a plurality of sealing members 26, which separate the coolant inlet channel 15 and the coolant return channel 15 and seal the cooling medium 34 therein. The arrangement of the sealing members 26 prevents the leakage of the cooling medium 34 and avoids the mutual flow of the cooling medium 34 in the inlet channel and the return channel to affect the cooling effect.

[0040] As shown in the drawings, Figure 1 , Figure 3 and Figure 4 , the rear cooling plate 4 is provided with a rear cooling medium connecting hole 29 which is communicated with the rear cooling medium inlet hole 30 and the coolant inlet channel 15; the diameter of the rear cooling medium connecting hole 29 is greater than that of the rear cooling medium inlet hole 30 and is adapted to the coolant inlet channel 15. The diameter of the rear cooling medium connecting hole 29 being greater than that of the rear cooling medium inlet hole 30 is beneficial to the smooth entry of the cooling medium 34 in the rear cooling medium inlet hole 30 into the coolant inlet channel 15, avoiding the backflow caused by large inlet pressure.

[0041] As shown in the drawings, Figure 5 , Figure 6 , the front cooling plate 23 is provided with four front cooling medium return holes 31 and a front cooling medium inlet hole 32; the front cooling medium return holes 31 are respectively and correspondingly communicated with the coolant return channel 15, and the front cooling medium inlet hole 32 is communicated with the coolant inlet channel 15; the front cooling medium return holes 31 and the front cooling medium inlet hole 32 are communicated with each other.

[0042] As shown in the drawings, Figure 7 , Figure 8 , another structure of the front cooling plate 23: the front cooling plate 23 is provided with a front cooling medium inlet hole 32 and a front cooling medium return groove 33 which are communicated with each other; the front cooling medium inlet hole 32 is communicated with the coolant inlet channel 15, and the front cooling medium return groove 33 is communicated with the coolant return channel 15.

[0043] As shown in the drawings, Figure 1As shown, the screw pair cooling mechanism further comprises a screw nut 18, a temperature detection device 17 and a control system 1; the screw nut 18 is installed on the screw rod 14, and the temperature detection device 17 is arranged on the screw nut 18; the control system 1 is connected with the temperature detection device 17 and the cooling generating device 9 through signal lines 2 to realize automatic opening and closing of the cooling generating device 9.

[0044] The temperature of the screw nut 18 is monitored in real time by the temperature detection device 17, and the control system 1 is set to realize automatic control.

[0045] As shown in the figure, Figure 1 The screw pair cooling mechanism further comprises a support platform 10, a rear fixed plate 13 and a front fixed plate 22, the rear fixed plate 13 and the front fixed plate 22 are arranged on the support platform 10, the rear fixed plate 13 is rotatably connected with one end of the screw rod 14 through a first bearing module 12, and the front fixed plate 22 is rotatably connected with the other end of the screw rod 14 through a second bearing module 21.

[0046] As shown in the figure, Figure 1 The screw pair cooling mechanism further comprises a movable plate 19 and a linear guide rail 20, the movable plate 19 is arranged on the linear guide rail 20 and moves linearly along the linear guide rail 20, the screw nut 18 is arranged on the movable plate 19, and the linear guide rail 20 is arranged on the support platform 10.

[0047] As shown in the figure, Figure 1 The screw rod 14 of the screw pair cooling mechanism is provided with a synchronous pulley 11 located between the rear fixed plate 13 and the rear cooling plate 4. As shown in the figure, Figure 2 The motor 24 is fixed on the rear fixed plate 13, the synchronous pulley 11 is driven to rotate through the motor 24 and a synchronous belt 25, thereby driving the screw rod 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.

[0048] A screw pair cooling control method is applied to the above-mentioned screw pair cooling mechanism, and the circulation direction of the cooling medium 34 is as shown in the figure, Figure 9 The method comprises the following steps:

[0049] 1) The temperature of the screw nut 18 is monitored in real time by the temperature detection device 17;

[0050] 2) When the temperature exceeds the set value T0, the control system 1 starts the cooling generating device 9 to drive the cooling medium 34 to enter the coolant inlet channel 15 of the screw rod 14 through the rear cooling plate 4, and then return to the cooling generating device 9 through the coolant return channel 15 after flowing through the front cooling plate 23;

[0051] 3) The cooling is circulated until the temperature is lower than T0, and the output of the cooling medium 34 is stopped.

[0052] The screw rod pair cooling mechanism and the cooling control method are compact in structure, accurate in control, high in heat dissipation efficiency, and can be widely applied to high-precision screw rod transmission systems of numerical control machine tools, automatic equipment and the like, significantly prolong the service life of the screw rod and improve the operation stability.

[0053] In summary, the utility model as the content of the description and the drawing, made actual sample and after many times of use test, from the test effect, prove that the utility model can achieve the expected purpose, practicality is self-evident. The above examples are only used to facilitate the content of the utility model, and not limited in form; any person skilled in the art without departing from the technical features and similar features of the utility model, using the equivalent embodiments of the utility model disclosed in the technical content of partial change or modification, all belong to the protection scope of the utility model.

Claims

1. A mechanism for cooling a screw pair, characterized by: It includes the connected screw rod (14) and screw nut (18), rear cooling plate (4) and cooling generating device (9) arranged on the support platform (10); The screw rod (14) is internally provided with an axial coolant inlet channel (15) and a plurality of coolant return channels (16) uniformly arranged around; one end of the screw rod (14) is rotationally connected with the rear cooling plate (4), and the other end internally connects the coolant inlet channel (15) and the coolant return channel (16) with 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 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) for connecting the rear coolant return groove (27), and the rear coolant return hole (28) and the rear coolant inlet hole (30) are respectively connected with the cooling generating device (9) by pipelines.

2. The mechanism according to claim 1, wherein It further includes a sealing member (26) for separating the coolant inlet channel (15) from the coolant return channel (16) and sealing the cooling medium therein.

3. The mechanism according to claim 1 or 2, wherein It further includes a front cooling plate (23) arranged on the other end of the screw rod (14) opposite to the rear cooling plate (4) and fixedly connected with the screw rod (14); the coolant inlet channel (15) and the coolant return channel (16) are connected with each other in the rear cooling plate (4).

4. The mechanism according to claim 1, wherein The rear cooling plate (4) is provided with a rear coolant connection hole (29) for connecting the rear coolant inlet hole (30) and the coolant inlet channel (15), and the diameter of the rear coolant connection hole (29) is greater than that of the rear coolant inlet hole (30) and is matched with the coolant inlet channel (15).

5. The mechanism according to claim 3, wherein The front cooling plate (23) is provided with a plurality of front coolant return holes (31) and a front coolant inlet hole (32); the front coolant return holes (31) are respectively and one-to-one connected with the coolant return channels (16), and the front coolant inlet hole (32) is connected with the coolant inlet channel (15); the front coolant return holes (31) and the front coolant inlet hole (32) are connected with each other.

6. The mechanism according to claim 3, wherein The front cooling plate (23) is provided with a front coolant inlet hole (32) and a front coolant return groove (33) connected with each other; the front coolant inlet hole (32) is connected with the coolant inlet channel (15), and the front coolant return groove (33) is connected with the coolant return channel (16).

7. The mechanism according to claim 1, wherein It further includes a temperature detection device (17) and a control system (1); the screw nut (18) is mounted on the screw rod (14), the temperature detection device (17) is arranged on the screw nut (18), and the control system (1) is signal connected with the temperature detection device (17) and the cooling generating device (9) to realize automatic opening and closing of the cooling generating device (9).

8. The mechanism according to claim 1, wherein It also includes a rear fixed plate (13) and a front fixed plate (22), which are respectively arranged on the support platform (10), the rear fixed plate (13) is rotatably connected to one end of the lead screw (14) through a first bearing module (12), and the front fixed plate (22) is rotatably connected to the other end of the lead screw (14) through a second bearing module (21).

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

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