Oil-cooled transmission device with integrated temperature feedback

Abstract

The utility model provides an oil -cooled drive device of integrated temperature feedback, including drive base, oil inlet nozzle, oil outlet nozzle, temperature sensor, drive motor, screw rod, first bearing assembly, fixed base, second bearing assembly, screw rod is connected with drive base inner wall rotation through first bearing assembly, screw rod is connected with fixed base inner wall rotation through second bearing assembly, drive motor fixed mounting is in drive base, and drive motor output end is connected with screw rod, drive base is along the middle axis direction and is opened and is installed cavity body in the middle, and oil inlet hole and oil outlet hole all are connected with installation cavity body, and the inner wall of installation cavity body is opened and has the oil ditch, and the oil ditch is connected with oil inlet hole, oil outlet hole, drive base top is opened and is installed the mounting hole of temperature sensor, and the mounting hole is connected with installation cavity body. Through the inside integrated oil circuit of drive base cooperation assembly temperature sensor real -time monitoring, the whole temperature rise problem of drive base is efficiently, intelligently solved.

Description

[Technical Field]

[0001] This utility model relates to CNC machine tool technology and the field, specifically to an oil-cooled transmission device with integrated temperature feedback. [Background Technology]

[0002] In CNC machine tools and high-precision transmission devices, the lead screw drive mechanism generates high-speed rotation due to servo motor drive, causing frictional heating of the lead screw, bearings, and transmission seat, leading to thermal deformation and severely affecting transmission accuracy and equipment lifespan. Existing cooling solutions for transmission devices (such as CN220592489U) mostly focus on heat dissipation of the lead screw body by opening an oil cooling cavity inside the lead screw, but they do not solve the problem of overall temperature rise of the transmission seat, and lack an active temperature control mechanism for the transmission seat body, resulting in insufficient cooling efficiency and sluggish response.

[0003] In view of this, this case involves in-depth research into the aforementioned issues, which led to the formation of this case. [Utility Model Content]

[0004] This invention aims to solve the technical problems of existing transmission devices, such as insufficient overall temperature rise of the transmission seat, inadequate cooling efficiency, and slow response. It provides an oil-cooled transmission device with integrated temperature feedback. By integrating an oil circuit (oil groove + inlet / outlet oil hole) inside the transmission seat and coordinating with a temperature sensor for real-time monitoring, the overall temperature rise problem of the transmission seat is solved efficiently and intelligently.

[0005] This utility model is implemented as follows: An oil-cooled transmission device with integrated temperature feedback includes a transmission base, an oil inlet, an oil outlet, a temperature sensor, a drive motor, a lead screw, a first bearing assembly, a fixed base, and a second bearing assembly. The oil inlet is installed on the oil inlet hole of the transmission base, and the oil outlet is installed on the oil outlet hole of the transmission base. The lead screw is rotatably connected to the inner wall of the transmission base through the first bearing assembly, and the lead screw is rotatably connected to the inner wall of the fixed base through the second bearing assembly. The drive motor is fixedly installed on the transmission base, and the output end of the drive motor is connected to the drive end of the lead screw. The transmission base has a mounting cavity through which the first bearing assembly and the lead screw are installed along the central axis. The oil inlet and oil outlet are both connected to the mounting cavity. The inner wall of the mounting cavity has an oil groove that is connected to the oil inlet and oil outlet. The top of the transmission base has a mounting hole for assembling the temperature sensor, and the mounting hole is connected to the mounting cavity.

[0006] Furthermore, the mounting cavity includes a first inner cavity and a second inner cavity that are coaxially arranged and connected, with the inner diameter of the first inner cavity being larger than the inner diameter of the second inner cavity to form a limiting step for abutting against the first bearing assembly.

[0007] Furthermore, the oil groove is formed in the first inner cavity, and the oil groove is a plurality of intersecting grooves that cover the contact area between the inner wall of the first inner cavity and the first bearing assembly.

[0008] Furthermore, the oil groove is formed in the first inner cavity, and the oil groove is a threaded groove covering the contact area between the inner wall of the first inner cavity and the first bearing assembly.

[0009] Furthermore, the oil inlet is located on the left side wall of the transmission seat, and the oil outlet is located on the right side wall of the transmission seat.

[0010] Furthermore, a convex ring is formed on the inner wall of the second inner cavity; the side of the convex ring forms a clearance step with the inner wall of the second inner cavity; the inner diameter of the convex ring is larger than the outer diameter of the lead screw.

[0011] Furthermore, the transmission seat includes a bearing cap that seals the first inner cavity.

[0012] Furthermore, the transmission seat includes an oil seal that blocks the second inner cavity.

[0013] Furthermore, the drive motor is a servo motor, which is connected to the lead screw via a coupling.

[0014] Furthermore, it also includes a base, on which both the transmission seat and the fixed seat are fixedly mounted.

[0015] The integrated temperature feedback oil-cooled transmission device of this utility model has the following beneficial technical effects:

[0016] 1. By integrating an internal oil circuit (oil groove + inlet / outlet oil holes) and a temperature sensor for real-time monitoring, the problem of overall temperature rise in the transmission seat caused by the self-rotation of the lead screw driven by the servo motor is systematically, efficiently, and intelligently solved. Specifically, cooling lubricating oil is injected into the mounting cavity through the oil inlet. The cooling lubricating oil flows through the oil groove and carries away the heat generated by friction between the first bearing assembly and the mounting cavity. It then returns to the oil cooler from the oil outlet, forming a complete oil cooling circulation loop. The oil cooling circulation loop directly and efficiently cools the heat source. In addition, by installing a temperature sensor on the mounting hole of the transmission seat, the internal temperature signal of the transmission seat is monitored in real time and fed back to the oil cooler. The oil cooler dynamically adjusts the cooling intensity and delivery speed of the cooling lubricating oil based on the received temperature signal.

[0017] 2. Highly targeted cooling: Oil grooves and inlet / outlet holes are designed directly inside the transmission housing to guide the cooling lubricating oil through the core area where heat is generated, effectively removing the heat between the first bearing assembly and the transmission housing, achieving direct and efficient heat dissipation.

[0018] 3. Intelligent temperature control: The transmission base can integrate a temperature sensor to monitor the temperature of key parts in real time and feed the signal back to the oil cooler. The oil cooler dynamically adjusts the cooling intensity and oil flow rate accordingly, thereby optimizing the cooling efficiency and avoiding overcooling (wasting energy) or insufficient cooling (overheating and damage to equipment), thus improving the reliability and energy efficiency of the transmission system.

[0019] 4. The multi-groove cross design (or threaded groove) of the oil groove significantly increases the contact area and path between the cooling lubricating oil and the inner wall of the transmission seat, enhances the heat exchange efficiency, and ensures uniform cooling. [Attached Image Description]

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

[0021] Figure 1 This is a schematic diagram of the structure of the oil-cooled transmission device with integrated temperature feedback in this utility model.

[0022] Figure 2 This is a partial cross-sectional view of the oil-cooled transmission device with integrated temperature feedback in this utility model.

[0023] Figure 3 This is a schematic diagram of the transmission seat in this utility model.

[0024] Figure 4 This is one of the cross-sectional views of the transmission seat in this utility model.

[0025] Figure 5 This is the second sectional view of the transmission seat in this utility model.

[0026] Reference numerals: transmission seat 100, oil inlet 200, oil outlet 300, temperature sensor 400, drive motor 500, lead screw 600, first bearing assembly 700, fixed seat 800, second bearing assembly 900, base 1000, oil inlet hole 1, oil outlet hole 2, mounting cavity 3, first inner cavity 31, second inner cavity 32, limiting step 33, oil groove 4, groove 41, mounting hole 5, convex ring 6, clearance step 7, bearing cover 8, oil seal 9, O-ring 10.

Detailed Implementation Methods

[0027] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Please see Figures 1 to 5As shown, this utility model provides an oil-cooled transmission device with integrated temperature feedback, including a transmission base 100, an oil inlet 200, an oil outlet 300, a temperature sensor 400, a drive motor 500, a lead screw 600, a first bearing assembly 700, a fixed base 800, and a second bearing assembly 900. The oil inlet 200 is installed on the oil inlet hole 1 of the transmission base 100, and the oil outlet 300 is installed on the oil outlet hole 2 of the transmission base 100. The lead screw 600 is rotatably connected to the inner wall of the transmission base 100 through the first bearing assembly 700, and the lead screw 600 is rotatably connected to the inner wall of the fixed base 800 through the second bearing assembly 900. The motor 500 is fixedly installed on the transmission base 100, and the output end of the drive motor 500 is connected to the drive end of the lead screw 600. The transmission base 100 has a mounting cavity 3 through which the first bearing assembly 700 and the lead screw 600 are installed. The oil inlet hole 1 and the oil outlet hole 2 are both connected to the mounting cavity 3. The inner wall of the mounting cavity 3 has an oil groove 4, which is connected to the oil inlet hole 1 and the oil outlet hole 2. The design of the oil inlet hole 1, the oil outlet hole 2 and the oil groove 4 directly guides the cooling lubricating oil to flow through the mounting area of ​​the first bearing assembly 700, realizing direct and efficient heat dissipation of the contact surface between the first bearing assembly 700 and the transmission base 100. The top of the transmission seat 100 is provided with a mounting hole 5 for assembling a temperature sensor 400. The mounting hole 5 is connected to the mounting cavity 3, which increases the temperature monitoring function. The mounting hole 5 is located at the top, which makes it easy to install the temperature sensor 400 from top to bottom. The bottom of the temperature sensor 400 will not come into contact with the cooling lubricating oil, and it can monitor the oil temperature or the wall temperature of the transmission seat 100 in real time in the area closest to the heat source.

[0029] This invention also includes an oil cooler. The output end of the oil cooler is connected to the oil inlet 200 via an oil pipe, and the input end is connected to the oil outlet 300 via an oil pipe. A temperature sensor 400 provides real-time temperature feedback to the oil cooler. The oil cooler adjusts the cooling intensity (such as compressor power and fan speed) and delivery speed (oil pump flow rate) of the cooling lubricating oil based on the signal from the temperature sensor 400. The oil cooler injects the cooled lubricating oil into the internal oil groove 4 of the transmission seat 100. The cooled lubricating oil carries the heat back to the oil cooler within the transmission seat 100 through flow, and the oil cooler then cools the lubricating oil that has been carried out. This process is repeated. The oil cooler is existing technology and will not be described in detail further.

[0030] In this invention, the mounting cavity 3 includes a first inner cavity 31 and a second inner cavity 32 coaxially arranged and connected. The inner diameter of the first inner cavity 31 is larger than the inner diameter of the second inner cavity 32, forming a limiting step 33 for abutting against the first bearing assembly 700. The limiting step 33 precisely limits and supports the first bearing assembly 700. The first inner cavity 31 is used to install the first bearing assembly 700 and the lead screw 600.

[0031] In this invention, the depth of the oil groove 9 is 2-5 mm. The oil groove 4 is formed in the first inner cavity 31, and the oil groove 4 is a plurality of intersecting grooves 41 that cover the contact area between the inner wall of the first inner cavity 31 and the first bearing assembly 700. The plurality of intersecting grooves 41 cover the key contact area, which greatly increases the flow path and contact area of ​​the cooling lubricating oil in the inner wall of the transmission seat 100, and more thoroughly removes the concentrated heat generated by friction, preventing heat from accumulating in the key parts of the transmission seat 100. This not only significantly improves the heat exchange efficiency, but also makes the cooling more uniform, further enhancing the cooling effect.

[0032] In another specific embodiment, the oil groove 4 is formed in the first inner cavity 31. The oil groove 4 is a threaded groove 41 covering the contact area between the inner wall of the first inner cavity 31 and the first bearing assembly 700. The threaded groove 41 greatly increases the flow path and contact area of ​​the cooling lubricating oil on the inner wall of the transmission seat 100, more thoroughly removing the concentrated heat generated by friction and preventing heat accumulation in key parts of the transmission seat 100. This not only significantly improves the heat exchange efficiency but also makes the cooling more uniform, further enhancing the cooling effect. The groove 41 of the oil groove 4 can also be other irregular or regular shapes, as long as it is connected to the oil inlet hole 1 and the oil outlet hole 2 and is distributed over a large area on the inner wall of the first inner cavity 31.

[0033] In this invention, the oil inlet 1 is located on the left side wall of the transmission base 100, and the oil outlet 2 is located on the right side wall of the transmission base 100, which facilitates the connection and layout of external oil pipes. The oil inlet 1 and the oil outlet 2 are arranged opposite to each other, further increasing the flow path of the cooling lubricating oil.

[0034] In this invention, a raised ring 6 is formed on the inner wall of the second inner cavity 32; a clearance step 7 is formed between the side of the raised ring 6 and the inner wall of the second inner cavity 32; the design of the clearance step 7 creates a certain gap between the side of the raised ring 6 and the first bearing assembly 700, reducing the force-bearing area of ​​the first bearing assembly 700, preventing accuracy deviation problems caused by excessive force-bearing area, and transferring the force-bearing point. The gap allows cooling lubricating oil to flow smoothly from the first inner cavity 31 (main cooling area) axially into the area of ​​the second inner cavity 32 near the root of the lead screw 600.

[0035] In this invention, the inner diameter of the convex ring 6 is larger than the outer diameter of the lead screw 600, which further optimizes the internal oil passage and creates a space for the flow of cooling lubricating oil around the lead screw 600. This ensures that the cooling oil can effectively flow around the root of the lead screw 600, helping to remove the heat conducted from the lead screw 600 to the transmission seat 100, and significantly improving the comprehensiveness and effectiveness of cooling.

[0036] In this invention, the transmission seat 100 includes a bearing cap 8 and an O-ring 10 that seal the first inner cavity 31. The O-ring 10 serves a sealing function, and the bearing cap 8 is used to axially fix the first bearing assembly 700 to prevent it from moving around, while also assisting in sealing the first inner cavity 31. Together with the oil seal 9, they ensure the sealing of the internal oil passage.

[0037] In this utility model, the transmission seat 100 includes an oil seal 9 and an O-ring 10 that seal the second inner cavity 32. The O-ring 10 plays a sealing role, effectively preventing internal cooling lubricating oil leakage, while preventing external contaminants from entering the transmission seat 100, protecting the first bearing assembly 700 and the oil circuit cleanliness, and ensuring the long-term reliable operation of the cooling system.

[0038] In this invention, the drive motor 500 is a servo motor, which is connected to the lead screw 600 via a coupling. The servo motor is a FANUC Bis22 / 3000. The coupling is existing technology and will not be described in detail here.

[0039] This utility model also includes a base 1000, on which the transmission seat 100 and the fixed seat 800 are both fixedly installed.

[0040] The integrated temperature feedback oil-cooled transmission device of this utility model has the following beneficial technical effects:

[0041] 1. By integrating an internal oil circuit (oil groove 4 + inlet / outlet oil hole 2) and a temperature sensor 400 for real-time monitoring, the problem of overall temperature rise in the transmission seat 100 caused by the rotation of the servo motor-driven lead screw 600 is systematically, efficiently, and intelligently solved. Specifically, cooling lubricating oil is injected into the mounting cavity 3 through the oil inlet 200. The cooling lubricating oil flows through the oil groove 4 and carries away the heat generated by friction between the first bearing assembly 700 and the mounting cavity 3. Then, it returns to the oil cooler from the oil outlet 300, forming a complete oil cooling circulation loop. The oil cooling circulation loop directly and efficiently cools the heat source. Furthermore, by installing the temperature sensor 400 on the mounting hole 5 of the transmission seat 100, the internal temperature signal of the transmission seat 100 is monitored in real time and fed back to the oil cooler. The oil cooler dynamically adjusts the cooling intensity and delivery speed of the cooling lubricating oil based on the received temperature signal.

[0042] 2. Highly targeted cooling: Oil grooves 4 and oil inlet / outlet holes 2 are designed directly inside the transmission housing 100 to guide the cooling lubricating oil through the core area where heat is generated, effectively removing the heat between the first bearing assembly 700 and the transmission housing 100, thus achieving direct and efficient heat dissipation.

[0043] 3. Intelligent temperature control: The transmission base 100 can integrate a temperature sensor 400 to monitor the temperature of key parts in real time and feed the signal back to the oil cooler. The oil cooler dynamically adjusts the cooling intensity and oil flow rate accordingly, thereby optimizing the cooling efficiency, avoiding overcooling (wasting energy) or insufficient cooling (overheating and damage to equipment), and improving the reliability and energy efficiency of the transmission system.

[0044] 4. The multi-groove 41 cross design of the oil groove 4 (or threaded groove 41) significantly increases the contact area and path between the cooling lubricating oil and the inner wall of the transmission seat 100, enhances the heat exchange efficiency, and ensures uniform cooling.

[0045] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An oil-cooled transmission device with integrated temperature feedback, characterized in that: The system includes a transmission base, an oil inlet, an oil outlet, a temperature sensor, a drive motor, a lead screw, a first bearing assembly, a fixed base, and a second bearing assembly. The oil inlet is mounted on the oil inlet hole of the transmission base, and the oil outlet is mounted on the oil outlet hole of the transmission base. The lead screw is rotatably connected to the inner wall of the transmission base via the first bearing assembly, and the lead screw is rotatably connected to the inner wall of the fixed base via the second bearing assembly. The drive motor is fixedly mounted on the transmission base, and its output end is connected to the drive end of the lead screw. The transmission seat has a mounting cavity for mounting the first bearing assembly and the lead screw through the central axis. The oil inlet and oil outlet are connected to the mounting cavity. The inner wall of the mounting cavity has an oil groove, which is connected to the oil inlet and oil outlet. The top of the transmission base has a mounting hole for assembling a temperature sensor, and the mounting hole is connected to the mounting cavity.

2. The oil-cooled transmission device with integrated temperature feedback as described in claim 1, characterized in that: The mounting cavity includes a first inner cavity and a second inner cavity that are coaxially arranged and connected. The inner diameter of the first inner cavity is larger than the inner diameter of the second inner cavity, forming a limiting step for abutting against the first bearing assembly.

3. The oil-cooled transmission device with integrated temperature feedback as described in claim 2, characterized in that: The oil groove is formed in the first inner cavity, and the oil groove is a series of intersecting grooves that cover the contact area between the inner wall of the first inner cavity and the first bearing assembly.

4. The oil-cooled transmission device with integrated temperature feedback as described in claim 2, characterized in that: The oil groove is formed in the first inner cavity, and the oil groove is a threaded groove that covers the contact area between the inner wall of the first inner cavity and the first bearing assembly.

5. The oil-cooled transmission device with integrated temperature feedback as described in claim 3 or 4, characterized in that: The oil inlet is located on the left side wall of the transmission seat, and the oil outlet is located on the right side wall of the transmission seat.

6. The oil-cooled transmission device with integrated temperature feedback as described in claim 5, characterized in that: The inner wall of the second inner cavity is formed with a convex ring; the side of the convex ring forms a clearance step with the inner wall of the second inner cavity; the inner diameter of the convex ring is larger than the outer diameter of the lead screw.

7. The oil-cooled transmission device with integrated temperature feedback as described in claim 6, characterized in that: The transmission seat includes a bearing cap that seals the first inner cavity.

8. The oil-cooled transmission device with integrated temperature feedback as described in claim 7, characterized in that: The transmission seat includes an oil seal that blocks the second inner cavity.

9. The oil-cooled transmission device with integrated temperature feedback as described in claim 8, characterized in that: The drive motor is a servo motor, which is connected to the lead screw via a coupling.

10. The oil-cooled transmission device with integrated temperature feedback as described in claim 9, characterized in that: It also includes a base, and both the transmission seat and the fixed seat are fixedly installed on the base.

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