Centralized refrigerating system for machine tool spindle

Abstract

The utility model discloses a machine tool spindle concentrated refrigeration system, which comprises a concentrated refrigeration station, a machine tool and a pipeline system, the concentrated refrigeration station provides cooling liquid meeting temperature requirements for the whole system, the pipeline system plays a role in conveying the cooling liquid and is divided into a liquid supply pipeline and a liquid return pipeline, and the concentrated refrigeration station is connected with the machine tool through the pipeline system. The system can adjust the flow of cooling liquid and control the pressure of the cooling liquid. The scheme is reasonable, the effect that one main shaft centralized refrigerating system is applied to a plurality of different refrigerating objects can be achieved, the equipment configuration cost and the maintenance cost are saved, energy is saved, and use is safe and stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool refrigeration, and in particular relates to a centralized refrigeration system for a machine tool spindle. Background Art

[0002] To ensure the machining accuracy and service life of machine tools, strict control of various process parameters and their accuracy is necessary. Temperature control of various machine tool components is one such requirement. High-speed spindle rotation generates significant heat, as does turntable and screw motion. Heat is also generated by the heat exchanger in the machine's internal electrical control cabinet. If this heat is not promptly addressed, it can affect the precision and service life of the spindle, screw, and turntable, and may even cause deformation of these components, impacting the machine's machining accuracy and service life. Therefore, cooling various heat-generating areas of a machine tool to meet operating temperature requirements is crucial to ensuring machining needs and accuracy.

[0003] Existing technology primarily uses a one-to-one cooling system for machine tools. Each machine tool is equipped with a refrigerator that cools each heat-generating component, meeting the required temperature control and precision, ensuring normal machine tool operation. However, a one-to-one cooling system in a workshop requires multiple refrigerators. This creates significant challenges, particularly with a large number of machine tools. The cost of deploying, using, and maintaining these refrigerators can be challenging, especially with a large number of machines. Furthermore, this system's low level of automation makes it difficult to meet the demands of automated production lines requiring one-touch start and control.

[0004] Chinese patent CN 204278282 U, a silicon wafer cutting machine tool cooling system, proposes a cooling system consisting of three machine tools, three refrigerators, a water inlet pipe, a water return pipe, and a control valve. The system uses a ball valve to switch on and off to achieve a dual-use, one-backup cooling mode, and a PLC control panel to control the three refrigerators for centralized control. While this patent provides a controllable and adjustable centralized cooling mode for small-scale machine tools, it uses a large number of refrigerators, cannot monitor the internal flow of the pipes in real time, and cannot adjust the internal pressure of the pipes in real time, making it unsuitable for automated production lines with a large number of machine tools. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a centralized cooling system for machine tool spindles in response to the above-mentioned deficiencies in the existing technology, so that in the process of meeting the cooling needs of machine tools, the equipment use cost, equipment maintenance cost, and energy use cost can be saved, and the use needs of automated production lines can be met.

[0006] The utility model adopts the following technical solutions:

[0007] A centralized refrigeration system for a machine tool spindle comprises a centralized refrigeration station 1, a machine tool 2 and a piping system; the centralized refrigeration station 1 provides coolant meeting temperature requirements for the entire system; the piping system transports the coolant and is divided into a liquid supply pipeline and a liquid return pipeline; the centralized refrigeration station 1 is connected to the machine tool 2 via the piping system; a centralized refrigeration station liquid outlet 3 and a centralized refrigeration station liquid return port 4 are provided on the centralized refrigeration station 1; the centralized refrigeration station 1 is connected to the liquid supply pipeline via the centralized refrigeration station liquid outlet 3 and to the liquid return pipeline via the centralized refrigeration station liquid return port 4.

[0008] Furthermore, the liquid supply pipeline includes a liquid supply main line 13, a liquid supply trunk line 15, and a liquid supply branch line 16, and each part is connected in sequence through a pipeline adapter, and the low-temperature coolant generated by the centralized refrigeration station 1 is transported to the machine tool 2 through the liquid supply pipeline; the return liquid pipeline includes a return liquid main line 9, a return liquid trunk line 11, and a return liquid branch line 12, and each part is connected in sequence through a pipeline adapter, and the high-temperature coolant generated by the machine tool 2 is transported to the centralized refrigeration station 1 for cooling through the return liquid pipeline.

[0009] Furthermore, ball valves are provided in the piping system to regulate the system flow rate. A liquid supply main line ball valve 5 is provided between the liquid supply rubber tube 7 and the liquid supply main line 9, a return liquid main line ball valve 6 is provided between the return liquid rubber tube 8 and the return liquid main line 9, a liquid supply branch line ball valve 20 is provided between the liquid supply branch line 16 and the liquid supply PU pipe 21-1, and a return liquid branch line ball valve 18 is provided between the return liquid branch line 12 and the return liquid PU pipe 19.

[0010] Specifically, a flow sensor 22 is provided between the liquid supply PU pipe 1 21 - 1 and the liquid supply PU pipe 2 21 - 2 entering the machine tool to monitor the flow entering the machine tool end in real time.

[0011] Specifically, a spring-loaded safety valve 17 is provided between the liquid return line 11 and the liquid supply line 15 to ensure normal pressure in the pipeline.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] The utility model can realize the effect of applying a set of spindle centralized refrigeration system to multiple different refrigeration objects, and transport the coolant over long distances through the refrigeration pipeline without the need to equip multiple refrigerators, thus saving equipment costs, maintenance costs, energy, and reducing the equipment footprint.

[0014] Furthermore, the system can regulate and monitor the flow of coolant flowing into the machine tool, thereby meeting the flow requirements of different types of machine tools in a system.

[0015] Furthermore, the system can relieve the pressure of the coolant in the refrigeration pipeline when the pressure is too high, so as to meet the pressure requirements of the entire system and ensure the safety of the system.

[0016] In summary, the solution of the utility model is reasonable, saves equipment cost and maintenance cost, saves energy, and is safe and stable to use.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the local structure of the utility model Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the local structure of the utility model Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the local structure of the utility model Figure 3 ;

[0022] Figure 5 This is a schematic diagram of the local structure of the utility model Figure 4 ;

[0023] Among them: 1- centralized refrigeration station, 2- machine tool, 3- liquid outlet of centralized refrigeration station, 4- liquid return port of centralized refrigeration station, 5- liquid supply main line ball valve, 6- liquid return main line ball valve, 7- liquid supply rubber tube, 8- liquid return rubber tube, 9- liquid return main line, 10- liquid return transfer line, 11- liquid return main line, 12- liquid return branch line, 13- liquid supply main line, 14- liquid supply transfer line, 15- liquid supply main line, 16- liquid supply branch line, 17- spring type safety valve, 18- liquid return branch line ball valve, 19- liquid return PU tube, 20- liquid supply branch line ball valve, 21-1- liquid supply PU tube 1, 21-2- liquid supply PU tube 2, 22- flow sensor. DETAILED DESCRIPTION

[0024] See also Figures 1 to 5 This embodiment provides a centralized cooling system for machine tool spindles, which meets the cooling needs of machine tools while achieving cost savings, easy maintenance, and applicability to automated production lines. The system includes a centralized cooling station 1, a machine tool 2, and a piping system.

[0025] The centralized refrigeration station 1 provides coolant that meets the temperature requirements for the entire system and is connected to the machine tool 2 through a pipeline system. A centralized refrigeration station liquid outlet 3 and a centralized refrigeration station liquid return port 4 are left on the centralized refrigeration station. The centralized refrigeration station liquid outlet 3 is connected to the liquid supply rubber tube 7 of the pipeline system, and is connected to the liquid return rubber tube 8 through the centralized refrigeration station liquid return port 4.

[0026] The piping system serves to transport coolant and is divided into a liquid supply pipeline and a liquid return pipeline. The liquid supply pipeline includes a liquid supply main line 13, a liquid supply trunk line 15, and a liquid supply branch line 16. Each part is connected in sequence through a pipeline adapter. The low-temperature coolant generated by the centralized refrigeration station 1 is transported to the machine tool 2 through the liquid supply pipeline; the liquid return pipeline includes a liquid return main line 9, a liquid return trunk line 11, and a liquid return branch line 12. Each part is also connected in sequence through a pipeline adapter. The high-temperature coolant generated by the machine tool 2 is transported to the centralized refrigeration station 1 for cooling through the liquid return pipeline.

[0027] In order to facilitate pipeline installation and adjust the system flow, ball valves are set in the entire pipeline system. A liquid supply main line ball valve 5 is set between the liquid supply rubber tube 7 and the liquid supply main line 9, a return liquid main line ball valve 6 is set between the return liquid rubber tube 8 and the return liquid main line 9, a liquid supply branch line ball valve 20 is set between the liquid supply branch line 16 and the liquid supply PU pipe 21-1, and a return liquid branch line ball valve 18 is set between the return liquid branch line 12 and the return liquid PU pipe 19.

[0028] In order to monitor the flow entering the machine tool end in real time, a flow sensor 22 is set between the liquid supply PU pipe 1 21-1 and the liquid supply PU pipe 2 21-2; and to ensure the normal pressure of the pipeline, a spring-loaded safety valve 17 is set between the return liquid trunk line 11 and the liquid supply trunk line 15.

[0029] The application process of this utility model is as follows:

[0030] Start the centralized refrigeration station 1, and the low-temperature coolant flows into the liquid supply pipeline from the centralized refrigeration station outlet 3, and passes through the liquid supply rubber tube 7, the liquid supply main road 13, the liquid supply trunk road 15, the liquid supply branch road 16, the liquid supply PU pipe 1 21-1, and the liquid supply PU pipe 2 21-2 in sequence before flowing into the machine tool 2 to cool the heat-generating parts of the machine tool such as the spindle, screw, and turntable; the high-temperature coolant that passes through the heat-generating parts of the machine tool passes through the return liquid PU pipe 19, the return liquid branch road 12, the return liquid trunk road 11, and the return liquid main road 9 in sequence, and enters the centralized refrigeration station 1 from the centralized refrigeration station return liquid port 4.

[0031] The flow of coolant entering the machine tool is regulated by adjusting the liquid supply branch ball valve 20 , and the flow rate is monitored in real time by the flow sensor 22 .

[0032] When replacing or repairing a refrigeration station, the main liquid supply ball valve 5 and the main liquid return ball valve 6 must be closed. When replacing a machine tool, the branch liquid supply ball valve 20 and the return liquid branch ball valve 18 must be closed to ensure that the coolant does not flow out.

[0033] The coolant in the entire piping system must meet certain pressure requirements. When the pipeline is blocked or other abnormal conditions occur, causing the pressure in the pipeline to be too high, the spring-loaded safety valve 17 opens, and the liquid supply trunk line 15 is connected to the liquid return trunk line 11 to release the pressure and ensure normal use of the system.

[0034] The above content is only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A centralized cooling system for a machine tool spindle, characterized in that: The invention comprises a centralized refrigeration station (1), a machine tool (2) and a piping system, wherein the piping system comprises a liquid supply piping and a liquid return piping, wherein the centralized refrigeration station (1) is connected to the machine tool (2) via the liquid supply piping and the liquid return piping respectively; a centralized refrigeration station liquid outlet (3) and a centralized refrigeration station liquid return outlet (4) are provided on the centralized refrigeration station (1), wherein the centralized refrigeration station (1) is connected to the liquid supply piping via the centralized refrigeration station liquid outlet (3) and is connected to the liquid return piping via the centralized refrigeration station liquid return outlet (4).

2. The centralized cooling system for a machine tool spindle according to claim 1, characterized in that: The liquid supply pipeline includes a liquid supply main line (13), a liquid supply trunk line (15), and a liquid supply branch line (16), and each part is connected in sequence through a pipeline adapter. The low-temperature coolant generated by the centralized refrigeration station (1) is transported to the machine tool (2) through the liquid supply pipeline. The return liquid pipeline includes a return liquid main line (9), a return liquid trunk line (11), and a return liquid branch line (12). Each part is connected in sequence through a pipeline adapter. The high-temperature coolant generated by the machine tool (2) is transported to the centralized refrigeration station (1) for cooling through the return liquid pipeline.

3. The centralized cooling system for a machine tool spindle according to claim 1, characterized in that: Ball valves are provided in the piping system. A main liquid supply line ball valve (5) is provided between the liquid supply rubber tube (7) and the main liquid supply line (13). A main liquid return line ball valve (6) is provided between the liquid return rubber tube (8) and the main liquid return line (9). A liquid supply line ball valve (20) is provided between the liquid supply branch line (16) and the liquid supply PU pipe 1 (21-1). A liquid return line ball valve (18) is provided between the liquid return branch line (12) and the liquid return PU pipe (19).

4. The centralized cooling system for a machine tool spindle according to claim 3, characterized in that: A flow sensor (22) is provided between the liquid supply PU pipe 1 (21-1) and the liquid supply PU pipe 2 (21-2) to monitor the flow of the coolant entering the machine tool end in real time.

5. The centralized cooling system for a machine tool spindle according to claim 2, characterized in that: A spring-loaded safety valve (17) is provided between the return liquid main line (11) and the supply liquid main line (15) to ensure normal pressure in the pipeline.

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