A cooling system for a turn-mill-complex machine

Abstract

This invention relates to the field of mill-turning machine technology and discloses a cooling system for a mill-turning machine, including a machine base with several mounting bosses for mounting guide rails. Cooling channels are arranged on the machine base, including a switchable channel branch one and a channel branch two. Channel branch one forms a series cooling circuit with multiple mounting bosses, and channel branch two forms an independent parallel cooling circuit with multiple mounting bosses. This invention, by setting switchable channel branches one and two, combined with the coordinated control of a processing unit and a temperature sensor, achieves adaptive switching between series and parallel cooling modes. This effectively solves the problems of temperature rise at the end of existing series cooling systems (attenuation and uneven cooling) and the high energy consumption and complex piping of parallel cooling systems. It balances the low energy consumption under low-heat conditions with the uniform temperature cooling requirements under high-heat conditions, suppresses thermal deformation of the machine base, ensures the machining accuracy of the machine tool, and is adaptable to different machining conditions of mill-turning machines.

Description

Technical Field

[0001] This invention relates to the field of turning-milling composite machine technology, and more particularly to a cooling system for a turning-milling composite machine. Background Technology

[0002] During long-term continuous operation, high-speed feed, and heavy-duty cutting, the core components of milling and turning machines, such as the machine base, multiple linear guides, and transmission screws, continuously generate heat. The uniformity of temperature distribution of these core components directly determines the overall machining accuracy and operational stability of the machine tool. Once local overheating or excessive overall temperature difference occurs, it can easily lead to thermal deformation of the machine base and misalignment of the guide rail mounting reference surface, resulting in guide rail jamming and excessive workpiece machining dimensional deviations, thus failing to meet the requirements of precision machining.

[0003] Currently, the industry generally adopts a fixed series cooling structure for cooling the core components of turning and milling composite machines. The machine base of this turning and milling composite machine is a one-piece molded structure with multiple guide rails on it. The multiple guide rails correspond to multiple base mounting positions on the machine base. Existing cooling systems all use a single cooling channel to connect multiple base mounting positions corresponding to the guide rails in series. The coolant flows through each guide rail mounting position sequentially along the preset channel path, and after completing the cooling of each one, it is uniformly returned for heat exchange.

[0004] This series cooling structure relies on a single flow channel to cool multiple parts, featuring a simple piping layout. It is compatible with the pre-casting process of an integrated base, resulting in low production difficulty and controllable manufacturing costs. Under low-heat conditions of light load, low speed, and short processing time, it can meet basic cooling requirements. However, it exhibits significant technical shortcomings under the high-heat conditions of actual industrial production. The coolant absorbs a large amount of heat as it flows through the first guide rail mounting point, causing its temperature to rise rapidly. As it flows through subsequent guide rail mounting points, the temperature difference with the parts to be cooled decreases significantly, and the heat removal efficiency decreases progressively. The closer the guide rail mounting point is to the end of the flow channel, the lower the efficiency becomes. The worse the cooling effect, the less uniform cooling of multiple guide rails and corresponding mounting parts can be achieved. Under prolonged high-heat processing conditions, significant temperature differences will form in the mounting areas of each guide rail of the machine base. The one-piece molded machine base will experience uneven thermal expansion due to temperature differences, directly damaging the straightness of the guide rails and the overall structural precision of the machine base. At the same time, the fixed series flow channels cannot adapt to the heat dissipation requirements of different processing conditions of the machine tool. The cooling capacity is insufficient under high-heat conditions, while there is a problem of flow redundancy and waste under low-heat conditions. It is difficult to balance cooling effect, processing accuracy and operating economy, and cannot meet the high-efficiency and stable processing requirements of current high-precision turning and milling composite machine tools. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a cooling system for a milling and turning machine that can adaptively switch cooling modes based on the coolant temperature rise. It can achieve two control methods: local series-independent cooling and full-channel independent parallel cooling, taking into account both low-energy operation and high-precision uniform temperature cooling requirements, and is suitable for use in different machining conditions of milling and turning machines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A cooling system for a milling and turning machine includes a base with a plurality of mounting bosses for mounting guide rails. Cooling channels are arranged on the base, each including a switchable channel branch one and a channel branch two. Channel branch one forms a series cooling circuit for multiple mounting bosses, and channel branch two forms an independent parallel cooling circuit for multiple mounting bosses. The cooling system also includes a processing unit that controls the switching of the cooling channels between a series cooling mode and a parallel cooling mode.

[0007] Preferably, the first flow channel branch is equipped with an inlet pipe and an outlet pipe. The inlet pipe is fitted with a pipe connector 1. The cooling channels of each mounting boss are respectively fitted with pipe connectors 2, 3, 4, 5, 6 and 7, so as to achieve a sealed connection between the cooling pipe and the cooling channel of the mounting boss, and provide a structural basis for the formation of a series cooling circuit.

[0008] Preferably, connecting pipe one and connecting pipe two are connected between the pipe joints corresponding to adjacent mounting bosses. The pipe joint seven is connected to the drain pipe through drain pipe one, so that the cooling channels of each mounting boss are connected in sequence to form a series cooling circuit, ensuring that the coolant can flow through each mounting boss in sequence to achieve low-energy-consumption basic cooling under low-heat conditions.

[0009] Preferably, the second flow channel branch is equipped with multiple sets of tee connectors, delivery pipes, control valves, and drain pipes. The tee connectors include tee connector one, tee connector two, tee connector three, tee connector four, tee connector five, tee connector six, tee connector seven, and tee connector eight. The delivery pipes include delivery pipe one, delivery pipe two, and delivery pipe three. The control valves include at least control valve one, control valve two, control valve three, control valve four, control valve five, and control valve six. The drain pipes include drain pipe two and drain pipe three. This provides hardware support for switching between series and parallel modes and enables independent cooling control of each mounting boss.

[0010] Preferably, a T-connector 1 is connected to the liquid inlet pipe, and the T-connector 1 is connected to the T-connector 2 through the delivery pipe 1. The T-connector 2 is connected to the delivery pipe 2 and the delivery pipe 3 respectively to realize the diversion of the low temperature coolant and provide channels for independent liquid supply for the intermediate and end mounting bosses.

[0011] Preferably, a three-way connector three, a control valve three, and a three-way connector five are sequentially installed on the connecting pipe one. The three-way connector three is connected to the three-way connector four via the drain pipe two and the control valve one. The three-way connector four is connected to the drain pipe one. The conveying pipe two is equipped with a control valve two, which can control the series connection and disconnection of the connecting pipe one, so as to realize independent drainage of the first mounting boss and independent liquid supply of the middle mounting boss.

[0012] Preferably, a three-way connector six, a control valve six, and a three-way connector seven are sequentially installed on the connecting pipe two. The three-way connector six is ​​connected to the three-way connector eight via the drain pipe three and the control valve four. The three-way connector eight is connected to the drain pipe. A control valve five is installed on the delivery pipe three, which can control the series connection and disconnection of the connecting pipe two, so as to realize independent draining of the middle mounting boss and independent supply of liquid of the end mounting boss.

[0013] Preferably, it also includes temperature sensor one and temperature sensor two. Temperature sensor one is installed on the connecting pipe one near pipe joint three, and temperature sensor two is installed on the connecting pipe two near pipe joint five. Temperature sensor one and temperature sensor two are both connected to the processing unit for signal connection, and can detect the coolant temperature rise status in real time, providing accurate data basis for the processing unit to switch cooling modes.

[0014] Preferably, the processing unit has a built-in preset temperature threshold. When the temperature sensor 2 detects that the coolant temperature exceeds the standard and the temperature sensor 1 detects that the temperature is normal, the processing unit controls the control valves 4, 5, and 6 to operate, cutting off the series path of the connecting pipe 2 and connecting the drain pipe 3 and the delivery pipe 3, so that the rear mounting boss is cooled independently and the front mounting boss is kept in series for cooling, taking into account both cooling effect and energy consumption, and specifically solving the problem of insufficient cooling of the end mounting boss.

[0015] Preferably, when the temperature sensor detects that the coolant temperature exceeds the standard, the processing unit synchronously controls the opening and closing of all control valves, cuts off the series flow path of the connecting pipe one and the connecting pipe two, and respectively connects each delivery pipe and the corresponding drain pipe, so that the cooling channel of each mounting boss forms an independent parallel cooling circuit, completely eliminates the temperature rise attenuation of series cooling, ensures uniform cooling of each mounting boss, and suppresses thermal deformation of the base.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention, by setting up two switchable flow channel branches, combined with the coordinated control of the processing unit and temperature sensor, enables adaptive switching between series and parallel cooling modes. This effectively solves the problems of temperature rise decay and uneven cooling at the end of existing series cooling systems, as well as high energy consumption and complex piping in parallel cooling systems. It takes into account both low energy consumption under low heat conditions and uniform temperature cooling requirements under high heat conditions, suppresses thermal deformation of the machine base, ensures the machining accuracy of the machine tool, and is suitable for different machining conditions of milling and turning composite machine tools. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural view of the cooling channel of the present invention; Figure 3 This is a structural view of the flow channel branch of the present invention; Figure 4 This is a structural view of the flow channel branch of the present invention; Figure 5 This is a schematic diagram of the cooling system structure of the present invention; Figure 6 This is a schematic diagram of the cooling system of the present invention in series cooling state; Figure 7 This is a schematic diagram of the cooling system of the present invention in series cooling mode; Figure 8 This is a schematic diagram of the fully parallel cooling state of the cooling system of the present invention.

[0019] Drawing number explanation: 1. Base; 11. Mounting boss; 2. Cooling channel; 21. Channel branch 1; 211. Pipe connector 1; 212. Liquid inlet pipe; 213. Pipe connector 2; 214. Pipe connector 3; 215. Connecting pipe 1; 216. Pipe connector 4; 217. Pipe connector 5; 218. Connecting pipe 2; 219. Pipe connector 6; 2110. Pipe connector 7; 2111. Drain pipe 1; 2112. Drain pipe; 22. Channel branch 2; 221. T-connector 1; 222. T-connector 2; 223. Inlet pipe; 1. Feed pipe 1; 224. T-connector 3; 225. Control valve 1; 226. T-connector 4; 227. Drain pipe 2; 228. Delivery pipe 2; 229. Control valve 2; 230. T-connector 5; 231. Control valve 3; 232. T-connector 6; 233. Control valve 4; 234. Drain pipe 3; 235. Delivery pipe 3; 236. Control valve 5; 237. T-connector 7; 238. Control valve 5; 239. T-connector 8; 3. Temperature sensor 1; 4. Temperature sensor 2; 5. Processing unit. Detailed Implementation

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

[0021] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0022] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0023] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0024] Example: Please see Figure 1-8A cooling system for a milling and turning machine includes a base 1 with several mounting bosses 11 for mounting guide rails. Each mounting boss 11 is arranged sequentially along the length of the base 1, and each mounting boss 11 has an embedded independent cooling channel for heat exchange and cooling of the corresponding guide rail mounting area and a local area of ​​the base 1. Cooling channels 2 are arranged on the base 1, including a switchable channel branch 21 and a channel branch 22. Channel branch 21 can connect the cooling channels inside the multiple mounting bosses 11 sequentially through external pipes, forming multiple cooling channels. The cooling circuit is connected in series with the mounting boss 11. The second branch of the flow channel 22 can be controlled by valves to cut off the series flow path and supply low temperature coolant to the cooling channel of each mounting boss 11 separately, forming an independent parallel cooling circuit for multiple mounting bosses 11. The cooling system also includes a processing unit 5. The processing unit 5 can directly use the dedicated programmable control module that comes with the machine tool and is fixedly installed in the machine tool's electrical control box. The processing unit 5 receives temperature detection signals in real time and controls the opening and closing actions of each valve in the cooling flow channel 2 accordingly, so as to realize the automatic and stable switching between series cooling mode and parallel cooling mode of the cooling flow channel 2.

[0025] Branch channel 21 is equipped with an inlet pipe 212 and an outlet pipe 2112. The inlet pipe 212 serves as the system's main inlet, connected to an external cooling circulation pump and heat exchanger, for continuously supplying low-temperature coolant to the entire cooling channel 2. The outlet pipe 2112 serves as the system's main return pipe, for returning the high-temperature coolant heated by heat exchange to the heat exchanger for circulation and cooling. A pipe connector 211 is fitted at the inlet end of the inlet pipe 212. The pipe connector 211 is used for sealing and connecting the inlet pipe 212 to the external circulation pipe, facilitating connection and smooth flow along the cooling channel. In the direction of liquid flow, the first cooling channel with mounting boss 11 has a sealing assembly pipe joint 213 at the inlet end and a sealing assembly pipe joint 314 at the outlet end; the second cooling channel with mounting boss 11 has a sealing assembly pipe joint 416 at the inlet end and a sealing assembly pipe joint 517 at the outlet end; and the third cooling channel with mounting boss 11 has a sealing assembly pipe joint 619 at the inlet end and a sealing assembly pipe joint 7110 at the outlet end. All pipe joints are sealed and fixed at the inlet and outlet ports of the corresponding cooling channels. The cooling channels are sealed and connected to the external pipelines, with no risk of leakage.

[0026] Adjacent mounting bosses 11 are respectively connected by sealing pipe 1 215 and connecting pipe 2 218 to their corresponding pipe fittings. The outlet of pipe fitting 3 214 is connected to the inlet of pipe fitting 4 216 by sealing pipe 1 215. The outlet of pipe fitting 5 217 is connected to the inlet of pipe fitting 6 219 by sealing pipe 2 218. Both connecting pipe 1 215 and connecting pipe 2 218 are made of oil-resistant and heat-resistant metal tubing, suitable for machine tool workshops that are humid and contain cutting oil. In the harsh working environment of fog, the outlet of pipe joint 7 2110 is sealed and connected to the drain pipe 2112 through drain pipe 1 2111. After the coolant flows in through the inlet pipe 212, it can flow through the cooling channels of each mounting boss 11, the connecting pipe 1 215 and the connecting pipe 2 218 in sequence, and finally flow into the drain pipe 2112 through drain pipe 1 2111, thus forming a closed-loop series cooling circuit in which the cooling channels of each mounting boss 11 are connected in sequence and flow in one direction.

[0027] The second branch of the flow channel 22 is equipped with multiple sets of tee joints, delivery pipes, control valves and drain pipes. Each tee joint is dedicated to realizing the diversion and merging of the pipeline. Each control valve is an electromagnetic on / off valve and is electrically connected to the processing unit 5 to achieve precise switching of pipeline on / off. The delivery pipe diverts and delivers low-temperature coolant from the main inlet to the corresponding cooling channel. The drain pipe is dedicated to collecting the coolant after heat exchange in each independent cooling channel into the main drain pipe 2112. The tee fittings include tee fitting 1 221, tee fitting 2 222, tee fitting 3 224, tee fitting 4 226, tee fitting 5 230, tee fitting 6 232, tee fitting 7 237, and tee fitting 8 239. The delivery pipes include delivery pipe 1 223, delivery pipe 2 228, and delivery pipe 3 235. The control valves include control valve 1 225, control valve 2 229, control valve 3 231, control valve 4 233, control valve 5 236, and control valve 6 238. The drain pipes include drain pipe 2 227 and drain pipe 3 234. All pipes, fittings, and control valves adopt standardized sealed assembly connections without welding gaps to avoid leakage and cracking caused by long-term vibration.

[0028] On the inlet pipe 212, the pipe section located between pipe joint 1 211 and pipe joint 213 is fixedly connected to tee joint 1 221. The main flow channel of tee joint 1 221 is coaxially connected to the inlet pipe 212. The branch port realizes the stable branching of the main flow channel of the inlet pipe 212. The branch port of tee joint 1 221 is sealed and connected to the main flow inlet of tee joint 222 through delivery pipe 1 223. The two branch outlets of tee joint 222 are respectively sealed and connected to the inlet end of delivery pipe 228 and the inlet end of delivery pipe 3 235. The low temperature coolant can be stably transported from the inlet pipe 212 through tee joint 1 221 and delivery pipe 1 223 to tee joint 222, and then distributed by tee joint 222 to delivery pipe 228 and delivery pipe 3 235, so as to independently supply low temperature coolant to the cooling channels of the two mounting bosses 11 at the rear end.

[0029] On connecting pipe 1 215, along the coolant flow direction from the end near pipe joint 3 214 to the end near pipe joint 4 216, a tee joint 3 224, a control valve 3 231, and a tee joint 5 230 are sequentially fixedly installed. When control valve 3 231 is fully open, connecting pipe 1 215 maintains a series flow state. When control valve 3 231 is fully closed, the series path of connecting pipe 1 215 is completely cut off, blocking the series flow direction. The lateral diversion port of tee joint 3 224, through drain pipe 2 227 and control valve 224, allows coolant to flow through the drain pipe 2 227 and control valve 224. 5. A sealed connection tee connector 426 is sealed and connected to drain pipe 1 2111. When control valve 1 225 is opened, the coolant after heat exchange in the cooling channel of the first mounting boss 11 can flow directly into drain pipe 1 2111 via drain pipe 2 227, without entering the subsequent series pipeline. Control valve 2 229 is fixedly installed on the pipeline of delivery pipe 2 228. Control valve 2 229 is dedicated to controlling the flow of coolant in delivery pipe 2 228, realizing the start and stop control of independent liquid supply to the cooling channel of the second mounting boss 11.

[0030] On connecting pipe 218, along the coolant flow direction from the end near pipe joint 5 217 to the end near pipe joint 6 219, a tee joint 6 232, a control valve 6 238, and a tee joint 7 237 are sequentially fixedly installed. When control valve 6 238 is fully closed, it can completely cut off the series flow path of connecting pipe 218, blocking the series passage between the first two mounting bosses 11 and the third mounting boss 11. The lateral diversion port of tee joint 6 232, through drain pipe 3 234 and control valve 4 233, is sealed. The tee connector 8239 is sealed and connected to the drain pipe 2112. When the control valve 4233 is opened, the coolant after heat exchange on the second mounting boss 11 can flow directly into the drain pipe 2112 through the drain pipe 3234 without entering the subsequent series pipes. The control valve 5236 is fixedly installed on the delivery pipe 3235. The control valve 5236 is dedicated to controlling the flow of coolant in the delivery pipe 3235, realizing the start and stop control of independent liquid supply to the cooling channel of the third mounting boss 11.

[0031] The present invention also includes a temperature sensor 3 and a temperature sensor 4. Temperature sensor 3 is fixedly installed on the connecting pipe 215 and is located close to the outlet of the pipe joint 214. It is used to detect the temperature of the coolant after heat exchange through the cooling channel of the first mounting boss 11. Temperature sensor 4 is fixedly installed on the connecting pipe 218 and is located close to the outlet of the pipe joint 217. It is used to detect the temperature of the coolant after heat exchange through the cooling channels of the first two mounting bosses 11. Temperature sensor 3 and temperature sensor 4 are both connected to the processing unit 5 via signal lines to transmit the detected coolant temperature signal to the processing unit 5 in real time, providing data basis for automatic switching of cooling mode.

[0032] The processing unit 5 has a built-in customizable temperature threshold, which can be flexibly calibrated according to the machining accuracy requirements of the machine tool. When the temperature sensor 24 detects that the coolant temperature exceeds the preset threshold, and the temperature sensor 13 detects that the temperature is within the normal range, it means that the series cooling effect of the first two mounting bosses 11 is sufficient. Only the coolant flowing through the end has an excessively high temperature rise, which cannot meet the cooling requirements of the third mounting boss 11. The processing unit 5 controls the control valves 4 233, 5 236, and 6 238 to act synchronously. The control valve 6 238 closes, completely cutting off the series path of the connecting pipe 2 218. The control valves 4 233 and 5 236 open synchronously, respectively connecting the drain pipe 3 234 and the delivery pipe 3 235, so that the third mounting boss 11 completely cuts off the series path and connects to an independent coolant supply circuit and an independent drain circuit. This achieves independent cooling of the rear mounting boss 11, while the front two mounting bosses 11 still maintain a series cooling state, balancing the cooling effect and operating energy consumption.

[0033] When temperature sensor 3 detects that the coolant temperature exceeds the preset threshold, it means that the coolant temperature rise after heat exchange at the first mounting boss 11 has exceeded the reasonable cooling range. Continuing to supply coolant in series will cause a significant decrease in the cooling effect of all subsequent mounting bosses 11, completely failing to meet the uniform temperature cooling requirement. At this time, processing unit 5 synchronously controls control valves 225, 229, 231, 233, 236, and 238 to open and close in a coordinated manner, while control valves 231 and 238 close synchronously. The bottom cuts off all the series flow paths of connecting pipe 1 215 and connecting pipe 2 218. At the same time, control valve 1 225, control valve 229, control valve 4 233 and control valve 5 236 are opened simultaneously, respectively connecting each delivery pipe and the corresponding drain pipe. The cooling channel of each mounting boss 11 is independently connected to the low temperature coolant supply circuit and the heat exchange drain circuit, so that the cooling channels of the three mounting bosses 11 form completely independent parallel cooling circuits, ensuring uniform cooling of all parts of the base 1 in all aspects and completely eliminating the risk of thermal deformation caused by series temperature rise attenuation.

[0034] Under normal use, this invention operates in three modes: conventional series cooling mode, local independent cooling mode, and full-channel parallel cooling mode. It can automatically and adaptively switch between modes according to the machine tool's operating conditions. The specific operating process is as follows: Under normal conditions, the milling and turning machine tool operates under low-heat processing conditions such as light load, low speed, and idling. Processing unit 5 controls all control valves to remain in their default closed state. At this time, flow channel branch 1 21 is fully open and operates independently. Low-temperature coolant is stably supplied to the inlet pipe 212 by an external circulation pump, enters the cooling channel inside the first mounting boss 11 via pipe connector 213, fully absorbs heat from the machine base 1 and guide rail, and then flows out through pipe connector 3 214 into connecting pipe 1 215, and then flows through pipe connector 4 216 into the first... The cooling channels of the two mounting bosses 11 continue to exchange heat. After the heat exchange is completed, the heat flows out through pipe joint 5 217 and into connecting pipe 2 218. It then flows through pipe joint 6 219 into the cooling channel of the third mounting boss 11 to complete the end heat exchange. Finally, it flows through pipe joint 7 2110 and drain pipe 1 2111 into drain pipe 2112 and returns to the external heat exchange device for cooling circulation. The entire process adopts a single-path series flow, with low pipeline resistance, low pressure loss, and low cooling pump energy consumption, which fully meets the basic cooling requirements under low heat conditions.

[0035] When the machine tool enters the medium-load machining condition, the heat generated by the rear mounting boss 11 continues to rise. After the coolant exchanges heat with the first two mounting bosses 11, its temperature rises significantly. Temperature sensor 24 detects in real time that the coolant temperature exceeds the preset threshold, while temperature sensor 13 detects that the temperature is within the normal and reasonable range. At this time, the processing unit 5 automatically triggers the local cooling switching logic, controls control valve 6 238 to close, completely cutting off the series flow path of connecting pipe 218. At the same time, controls control valve 4 233 and control valve 5 236 open synchronously, and the low-temperature coolant in the inlet pipe 212 flows through the tee. Connector 1 221, delivery pipe 1 223, and tee connector 2 222 are diverted to delivery pipe 3 235, directly supplying fresh low-temperature coolant to the cooling channel of the third mounting boss 11. After heat exchange at the end, the coolant flows steadily into the drain pipe 2112 via drain pipe 3 234 and tee connector 8 239. Meanwhile, the first two mounting bosses 11 maintain their original series cooling state through connecting pipe 1 215, realizing a zoned cooling mode with series connection at the front end and independent operation at the rear end. This avoids the additional energy consumption caused by full parallel operation and completely solves the problems of insufficient cooling and uneven temperature drop at the end.

[0036] When the machine tool enters heavy-duty high-speed milling mode, all three mounting bosses 11 continuously generate a large amount of heat. Temperature sensor 11 first detects that the temperature of the coolant flowing out of the first mounting boss 11 exceeds the standard. After the signal is transmitted to the processing unit 5 in real time, the processing unit 5 immediately controls all control valves to act in tandem. Control valve 3 231 and control valve 6 238 are closed simultaneously, completely cutting off all series flow paths of connecting pipe 1 215 and connecting pipe 2 218. At the same time, control valve 1 225, control valve 2 229, control valve 4 233, and control valve 5 236 are all opened. The low-temperature coolant is diverted from the inlet pipe 212 through the tee connector 1 221 and then flows through the delivery pipe 2 2 28. The three delivery pipes 235 supply coolant independently to the second and third mounting bosses 11. The coolant after heat exchange at the first mounting boss 11 is directly discharged into the first drain pipe 2111 via the second drain pipe 227. The coolant after heat exchange at the second and third mounting bosses 11 is merged into the drain pipe 2112 via the third drain pipe 234. The cooling channels of the three mounting bosses 11 achieve independent liquid inlet, independent liquid outlet, and independent heat exchange, forming a fully parallel cooling mode. Each channel is supplied with brand new low-temperature coolant, completely eliminating the problem of gradual temperature rise and decay in series cooling, ensuring uniform and stable temperature in all parts of the machine base 1, suppressing thermal deformation from the source, and continuously ensuring high-precision machining of the machine tool.

[0037] When the machine tool processing load decreases, returns to a light load condition, and the coolant temperature drops to within the preset threshold, temperature sensor 3 and temperature sensor 4 transmit the low-temperature signal to the processing unit 5 in real time. The processing unit 5 controls all control valves to reset and close synchronously. The system automatically and smoothly switches to the conventional series cooling mode of the return channel branch 21, restores the low-energy consumption and stable operation state, and realizes adaptive intelligent switching under all working conditions without manual intervention.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A cooling system for a turn-mill-complex machine, characterized by: Includes a base (1), on which a plurality of mounting bosses (11) for mounting guide rails are provided, and a cooling channel (2) is arranged on the base (1). The cooling channel (2) includes a switchable channel branch one (21) and a channel branch two (22). The channel branch one (21) forms a series cooling circuit of multiple mounting bosses (11), and the channel branch two (22) forms an independent parallel cooling circuit of multiple mounting bosses (11). The cooling system also includes a processing unit (5), which controls the cooling channel (2) to switch between series cooling mode and parallel cooling mode.

2. A cooling system for a hybrid machine as defined in claim 1, wherein: The flow channel branch (21) is equipped with an inlet pipe (212) and an outlet pipe (2112), and the inlet pipe (212) is fitted with a pipe connector (211). The cooling channels of each mounting boss (11) are respectively equipped with pipe joints 2 (213), 3 (214), 4 (216), 5 (217), 6 (219) and 7 (2110).

3. A cooling system for a hybrid turning and milling machine according to claim 2, wherein: The pipe joints corresponding to the adjacent mounting bosses (11) are respectively connected by connecting pipe one (215) and connecting pipe two (218). The pipe joint seven (2110) is connected to the drain pipe (2112) through drain pipe one (2111) so that the cooling channels of each mounting boss (11) are connected in sequence to form a series cooling circuit.

4. A cooling system for a hybrid turning and milling machine according to claim 3, wherein: The second branch of the flow channel (22) is equipped with multiple sets of three-way connectors, delivery pipes, control valves and drain pipes. The three-way connectors include three-way connector one (221), three-way connector two (222), three-way connector three (224), three-way connector four (226), three-way connector five (230), three-way connector six (232), three-way connector seven (237) and three-way connector eight (239). The delivery pipes include delivery pipe one (223), delivery pipe two (228) and delivery pipe three (235). The control valves include at least control valve one (225), control valve two (229), control valve three (231), control valve four (233), control valve five (236) and control valve six (238). The drain pipes include drain pipe two (227) and drain pipe three (234).

5. A cooling system for a hybrid machine as defined in claim 4, wherein: The liquid inlet pipe (212) is connected to a three-way connector one (221), the three-way connector one (221) is connected to a three-way connector two (222) through a delivery pipe one (223), and the three-way connector two (222) is connected to the delivery pipe two (228) and the delivery pipe three (235) respectively.

6. The cooling system of a turning-milling composite machine according to claim 5, characterized in that: The connecting pipe 1 (215) is sequentially equipped with a three-way connector 3 (224), a control valve 3 (231) and a three-way connector 5 (230). The three-way connector 3 (224) is connected to the three-way connector 4 (226) via the drain pipe 2 (227) and the control valve 1 (225). The three-way connector 4 (226) is connected to the drain pipe 1 (2111). The conveying pipe 2 (228) is equipped with a control valve 2 (229).

7. The cooling system of a turning-milling composite machine according to claim 6, characterized in that: The connecting pipe 2 (218) is sequentially equipped with a three-way connector 6 (232), a control valve 6 (238) and a three-way connector 7 (237). The three-way connector 6 (232) is connected to the three-way connector 8 (239) via the drain pipe 3 (234) and the control valve 4 (233). The three-way connector 8 (239) is connected to the drain pipe (2112). The conveying pipe 3 (235) is equipped with a control valve 5 (236).

8. The cooling system of a turning-milling composite machine according to claim 1, characterized in that: It also includes temperature sensor one (3) and temperature sensor two (4). Temperature sensor one (3) is located on the connecting pipe one (215) near the pipe joint three (214), and temperature sensor two (4) is located on the connecting pipe two (218) near the pipe joint five (217). Temperature sensor one (3) and temperature sensor two (4) are both connected to the processing unit (5) for signal connection.

9. The cooling system of a turning-milling composite machine according to claim 8, characterized in that: The processing unit (5) has a built-in preset temperature threshold. When the temperature sensor 2 (4) detects that the coolant temperature exceeds the standard and the temperature sensor 1 (3) detects that the temperature is normal, the processing unit (5) controls the control valve 4 (233), control valve 5 (236), and control valve 6 (238) to operate, cut off the series path of the connecting pipe 2 (218), and connect the drain pipe 3 (234) and the delivery pipe 3 (235) so that the rear mounting boss (11) is cooled independently and the front mounting boss (11) is kept in series cooling.

10. The cooling system of a turning-milling composite machine according to claim 8, characterized in that: When the temperature sensor (3) detects that the coolant temperature exceeds the standard, the processing unit (5) synchronously controls the opening and closing of all control valves, cuts off the series flow path of the connecting pipe (215) and the connecting pipe (218), and respectively connects each delivery pipe and the corresponding drain pipe, so that the cooling channel of each mounting boss (11) forms an independent parallel cooling circuit.

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