Numerical control machine tool ball screw cooling device

Abstract

The utility model discloses a cooling device for a ball screw of a numerical control machine tool, which relates to the technical field of numerical control machine tools and comprises a machine tool body, a temperature monitoring component, a cold air knife component and a control cabinet. The machine tool body comprises a ball screw; the temperature monitoring assembly is detachably mounted on one side of the ball screw on the machine tool body, and the temperature monitoring assembly is used for detecting the temperature of the ball screw; the cold air knife assembly is detachably installed on the other side of the ball screw on the machine tool body and used for blowing air to cool the ball screw. The control cabinet is connected with the temperature monitoring assembly and the cold air knife assembly, and the control cabinet is used for controlling starting or closing of the cold air knife assembly according to signals of the temperature monitoring assembly. According to the arrangement, due to the fact that the cooling mode adopted by the cold air knife assembly is air cooling, and the cooling medium is air, the temperature of the ball screw in the working process is reduced, meanwhile, pollution to the environment is avoided, and the structural strength of the ball screw does not need to be changed.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a ball screw cooling device for CNC machine tools. Background Technology

[0002] During the use of CNC machine tools, especially large gantry machining centers, the ball screws of the X / Y / Z axes operate repeatedly and continuously. Due to the large load, the friction between the ball screw and the screw nut generates a lot of heat during operation, which causes the temperature of the ball screw to rise and cause thermal deformation, resulting in a decrease in the accuracy of the ball screw.

[0003] Currently, most ball screws are cooled by machining them into a hollow shape, with the cooling medium flowing inside to carry away the heat. However, machining the ball screw into a hollow shape reduces its strength and greatly increases the probability of failure. In addition, the cooling medium is usually coolant, rust inhibitor, oil, etc., which increases the risk of environmental pollution.

[0004] Therefore, how to provide a cooling device that can reduce the operating temperature of the ball screw without changing its structure or polluting the environment is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a cooling device that reduces the operating temperature of the ball screw without altering its structure or polluting the environment.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cooling device for ball screws in CNC machine tools, comprising:

[0008] The machine tool body includes a ball screw extending along a first direction;

[0009] A temperature monitoring component is detachably mounted on the machine tool body along a first direction, and the temperature monitoring component is located on one side of the ball screw. The temperature monitoring component is used to detect the temperature of the ball screw.

[0010] The cold air knife assembly is detachably mounted on the machine tool body along the first direction, and the cold air knife assembly is located on the other side of the ball screw. The cold air knife assembly is used to blow air to cool the ball screw.

[0011] The control cabinet is connected to the temperature monitoring component and the cold air knife component respectively. The control cabinet is used to control the start or stop of the cold air knife component according to the signal from the temperature monitoring component.

[0012] Preferably, the temperature monitoring component includes:

[0013] The two first support mounting seats are detachably mounted on the machine tool body, and the line connecting the two first support mounting seats is parallel to the axis of the ball screw.

[0014] The sensor mounting plate is rotatably mounted between two first bracket mounting bases, and its rotation axis is parallel to the first direction;

[0015] Several sensor components are installed at intervals and evenly on the sensor mounting plate.

[0016] As a preferred embodiment, the cold air knife assembly includes:

[0017] Two second bracket mounting seats are detachably mounted on the machine tool body and are located on the side of the ball screw away from the temperature monitoring component. The line connecting the two first bracket mounting seats is parallel to the axis of the ball screw.

[0018] The air knife mounting plate is rotatably mounted between two first bracket mounting seats, and its rotation axis is parallel to the first direction;

[0019] Several air knives are installed at even intervals on the air knife mounting plate.

[0020] Preferably, both the first bracket mounting base and the second bracket mounting base are provided with an arc-shaped waist-shaped groove for limiting the rotation of the sensor mounting plate and the air knife mounting plate.

[0021] Preferably, the sensor assembly includes a sensor bracket and an infrared temperature sensor. The sensor bracket has an L-shaped structure, with one side detachably mounted to the sensor mounting plate by bolts, and the other side used to mount the infrared temperature sensor.

[0022] Preferably, the control cabinet is equipped with several solenoid valves that are connected to the air knife. The air knife is connected to the solenoid valves through an air inlet hose, and the solenoid valves are used to control whether air is supplied to the air knife.

[0023] Preferably, the cold air knife assembly also includes a triple air filter and a refrigerated dryer. One end of the triple air filter is connected to the air source, and the other end is connected to the refrigerated dryer. The refrigerated dryer is connected to a solenoid valve. The triple filter is used to filter impurities in the passing gas, and the refrigerated dryer is used to dry the passing gas.

[0024] Preferably, a single filter is connected between the refrigerated dryer and the solenoid valve.

[0025] Preferably, the air knife is connected to the air intake hose via an adapter.

[0026] Preferably, the gas source is an air pump or an air storage tank.

[0027] Compared to the aforementioned background technology, the present invention provides a CNC machine tool ball screw cooling device, comprising: a machine tool body, a temperature monitoring component, a cold air knife component, and a control cabinet; the machine tool body includes a ball screw extending along a first direction; the temperature monitoring component is detachably installed on the machine tool body along the first direction, and is located on one side of the ball screw, and is used to detect the temperature of the ball screw; the cold air knife component is detachably installed on the machine tool body along the first direction, and is located on the other side of the ball screw, and is used to cool the ball screw by blowing air; the control cabinet is connected to the temperature monitoring component and the cold air knife component respectively, and is used to control the start or stop of the cold air knife component according to the signal from the temperature monitoring component.

[0028] Specifically, the ball screw is mounted on the upper side of the machine tool body. In addition, a temperature monitoring component and a cooling air knife component are respectively installed on the upper side of the machine tool body and near both sides of the ball screw. The temperature monitoring component detects the temperature of the ball screw in real time. When it reaches a preset critical value, it sends a signal to the control cabinet. The control cabinet then controls the cooling air knife component to start blowing air onto the ball screw to cool it down until the temperature detected by the temperature monitoring component drops below the critical value. With this setup, since the cooling method used by the cooling air knife component is air cooling and the cooling medium is air, the temperature of the ball screw during operation is reduced without causing environmental pollution, and the structural strength of the ball screw itself is not changed. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the installation state structure of the cooling device provided in the embodiment of this utility model;

[0031] Figure 2 for Figure 1 Another structural diagram;

[0032] Figure 3 This is a schematic diagram of the temperature monitoring component structure provided in an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of the cold air knife assembly structure provided in an embodiment of the present utility model;

[0034] Figure 5 for Figure 4Another structural diagram from a different angle.

[0035] in:

[0036] 100 - Machine tool body; 110 - Ball screw;

[0037] 200 - Temperature monitoring component, 210 - First bracket mounting base, 220 - Sensor mounting plate, 230 - Sensor bracket, 240 - Infrared temperature sensor;

[0038] 300-Cold air knife assembly, 310-Second bracket mounting base, 320-Air knife mounting plate, 330-Air knife, 340-Inlet hose, 350-Triple air filter, 360-Refrigerated dryer, 370-Single filter, 380-Adapter;

[0039] 400-Control Cabinet. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0043] The purpose of this invention is to provide a cooling device that reduces the operating temperature of the ball screw without altering its structure or polluting the environment.

[0044] It should be noted that in this embodiment, the direction of X in the accompanying drawings is defined as the first direction.

[0045] To achieve the above objectives, the present invention provides the following technical solution:

[0046] Please see Figures 1 to 5This embodiment provides a ball screw cooling device for CNC machine tools, including: a machine tool body 100, a temperature monitoring component 200, a cold air knife assembly 300, and a control cabinet 400; the machine tool body 100 includes a ball screw 110 extending along a first direction; the temperature monitoring component 200 is detachably installed on the machine tool body 100 along the first direction, and the temperature monitoring component 200 is located on one side of the ball screw 110, and the temperature monitoring component 200 is used to detect the temperature of the ball screw 110; the cold air knife assembly 300 is detachably installed on the machine tool body 100 along the first direction, and the cold air knife assembly 300 is located on the other side of the ball screw 110, and the cold air knife assembly 300 is used to cool the ball screw 110 by blowing air; the control cabinet 400 is connected to the temperature monitoring component 200 and the cold air knife assembly 300 respectively, and the control cabinet 400 is used to control the start or stop of the cold air knife assembly 300 according to the signal of the temperature monitoring component 200.

[0047] Specifically, such as Figure 2 As shown, the ball screw 110 is mounted on the upper side of the machine tool body 100, both extending along the first direction. In this embodiment, the ball screw 110 is a standard screw and is not machined into a hollow shape. Furthermore, a temperature monitoring component 200 and a cold air knife component 300 are respectively installed on the upper side of the machine tool body 100 and near both sides of the ball screw 110. The temperature monitoring component 200 monitors the temperature at various locations of the ball screw 110 in real time. When a preset critical value is reached, this critical value can be set according to actual conditions. When the critical value is reached, a signal will be sent to the control cabinet 400, which will then control the cold air knife assembly 300 to start blowing air onto the ball screw 110 to cool it down until the temperature detected by the temperature monitoring assembly 200 drops below the critical value. With this setup, since the cooling method used by the cold air knife assembly 300 is air cooling and the cooling medium is air, the temperature of the ball screw 110 during operation will be reduced without causing environmental pollution, and the structural strength of the ball screw 110 itself will not be changed.

[0048] Preferably, the temperature monitoring component 200 includes: two first bracket mounting seats 210, a sensor mounting plate 220, and a plurality of sensor components; the two first bracket mounting seats 210 are detachably mounted on the machine tool body 100, and the line connecting the two first bracket mounting seats 210 is parallel to the axis of the ball screw 110; the sensor mounting plate 220 is rotatably mounted between the two first bracket mounting seats 210, and its rotation axis is parallel to a first direction; the plurality of sensor components are spaced apart and evenly mounted on the sensor mounting plate 220.

[0049] Specifically, such as Figure 3As shown, the two first bracket mounting seats 210 are arranged opposite each other and are detachably mounted to the upper side of the machine tool body 100 by screws. The sensor mounting plate 220 is a base plate that carries a number of sensors. It is mounted between the two first bracket mounting seats 210. A suitable number of sensor assemblies can be mounted on its upper side along its extension direction. The sensor assemblies are evenly spaced, and the spacing can be adjusted according to the actual situation. However, it should be noted that in order to ensure that the entire ball screw 110 is under monitoring, the length of the sensor mounting plate 220 should be greater than or equal to the length of the ball screw 110. It can also be understood that, in order to facilitate the installation of sensor assemblies and increase the convenience of use, the sensor mounting plate 220 can rotate between the two first bracket mounting seats 210, and its axis of rotation is parallel to the first direction. In this way, the angle of the sensor mounting plate 220 can be adjusted to adjust the angle of the sensor assembly relative to the ball screw 110, so that the sensor assembly can accurately monitor the temperature of the ball screw 110.

[0050] Preferably, the cold air knife assembly 300 includes: two second bracket mounting seats 310, an air knife mounting plate 320, and a plurality of air knives 330; the two second bracket mounting seats 310 are detachably mounted on the machine tool body 100 and are located on the side of the ball screw 110 away from the temperature monitoring assembly 200, and the line connecting the two first bracket mounting seats 210 is parallel to the axis of the ball screw 110; the air knife mounting plate 320 is rotatably mounted between the two first bracket mounting seats 210 and its rotation axis is parallel to the first direction; the plurality of air knives 330 are evenly spaced and mounted on the air knife mounting plate 320.

[0051] like Figure 4 and Figure 5 As shown, the structure of the cold air knife assembly 300 is similar to that of the temperature monitoring assembly 200. It is installed on the other side of the ball screw 110. The cold air knife assembly 300 and the temperature monitoring assembly 200 are arranged opposite each other with the ball screw 110 as the axis of symmetry. Specifically, the two second bracket mounting seats 310 are arranged opposite each other, and the air knife mounting plate 320 is also rotatably installed between the two first bracket mounting seats. At the same time, multiple air knives 330 are arranged sequentially along the air knife mounting plate 320. Similarly, in order to ensure the cooling effect of the air knives 330 on the ball screw 110, the number and spacing of the air knives 330 must be adjusted according to actual needs. At the same time, the length of the air knife mounting plate 320 is also greater than or equal to the length of the ball screw 110.

[0052] In this embodiment, the air knife 330 is specifically an aluminum alloy air knife 330.

[0053] Preferably, both the first bracket mounting base 210 and the second bracket mounting base 310 are provided with an arc-shaped waist-shaped groove for limiting the rotation of the sensor mounting plate 220 and the air knife mounting plate 320.

[0054] Understandably, to prevent the sensor mounting plate 220 and the air knife mounting plate 320 from rotating too much, causing the sensor assembly or the air knife 330 to collide with the ball screw 110 or the machine tool body 100, in this embodiment, it is necessary to limit the rotation of the sensor mounting plate 220 and the air knife mounting plate 320. Therefore, on the side opposite to the first bracket mounting base 210 and the second bracket mounting base 310, that is, the side abutting against the sensor mounting plate 220 and the air knife mounting plate 320, an arc-shaped waist-shaped groove is provided, wherein the center of the waist-shaped groove can be the axis of rotation of the sensor mounting plate 220 and the air knife mounting plate 320, specifically as follows: Figure 3 As shown, once the sensor mounting plate 220 and the air knife mounting plate 320 are rotated into place, they can be fixed by screwing bolts into the slot.

[0055] Preferably, the sensor assembly includes a sensor bracket 230 and an infrared temperature sensor 240. The sensor bracket 230 has an L-shaped structure, with one side detachably mounted to the sensor mounting plate 220 by bolts, and the other side used to mount the infrared temperature sensor 240.

[0056] In this embodiment, the sensor assembly consists of a sensor bracket 230 and an infrared temperature sensor 240. The sensor bracket 230 has an overall L-shaped structure, with one right-angled side mounted to the upper side of the sensor mounting plate 220 by screws, and the other right-angled side facing the ball screw 110. The infrared temperature sensor 240 is mounted to this right-angled side.

[0057] Preferably, the control cabinet 400 is equipped with several solenoid valves that are connected to the air knife 330. The air knife 330 is connected to the solenoid valves through the air inlet hose 340. The solenoid valves are used to control whether to supply air to the air knife 330.

[0058] Understandably, to save energy and avoid wasting costs, the multiple air blades 330 in this embodiment will not operate simultaneously. Specifically, the control cabinet 400 in this embodiment is equipped with several solenoid valves, each connected to one air blade 330, and each solenoid valve is also connected to the infrared temperature sensor 240 corresponding to its connected air blade 330. That is, each area of ​​the ball screw 110 corresponds to one infrared temperature sensor 240 and one air blade 330. It should be noted that the infrared temperature sensor 240 and the air blade 330 are connected to the same solenoid valve simultaneously. In this way, each infrared temperature sensor 240 can monitor the temperature of a section of the ball screw 110 and transmit the signal to the control cabinet 400. When the detected temperature is higher than a preset value, the control cabinet 400 will control the corresponding solenoid valve to open, that is, control the air blade 330 corresponding to that area to operate until the temperature of that area drops below the preset value. With this setting, the device can be used at a lower economic cost without affecting the cooling of the ball screw 110.

[0059] Preferably, the cold air knife assembly 300 also includes a triple air filter 350 and a refrigerated dryer 360. One end of the triple air filter 350 is connected to the air source, and the other end is connected to the refrigerated dryer 360. The refrigerated dryer 360 is connected to a solenoid valve. The triple filter is used to filter impurities in the passing gas, and the refrigerated dryer 360 is used to dry the passing gas.

[0060] Specifically, such as Figure 1 and Figure 2 As shown, in order to ensure the cooling effect of the ball screw 110 and to prevent impurities from being blown out by the air knife 330 and scratching the ball screw 110 during air cooling, in this embodiment, the air entering the control cabinet 400 needs to be filtered and dried between the solenoid valves. Specifically, the air filtration is achieved by a triple air filter 350, and the air drying and cooling are achieved by a dry-cooling unit. In this embodiment, the triple air filter 350 is installed between the dry-cooling unit and the air source. That is, after the air comes out of the air source, it will first pass through the triple air filter 350 for filtration before it is delivered to the dry-cooling unit for drying and cooling. This setting can avoid impurities from damaging subsequent components.

[0061] Preferably, a single filter 370 is connected between the refrigerated dryer 360 and the solenoid valve.

[0062] Understandably, this setting allows for further filtration of the air entering the solenoid valve, ensuring that the air blown out by the air knife 330 is clean and dry.

[0063] Preferably, the air knife 330 is connected to the air intake hose 340 via an adapter 380.

[0064] In this embodiment, the solenoid valve and the air knife 330 are connected by a transparent air inlet hose 340. In order to facilitate the installation and replacement of the air knife 330, the air knife 330 is connected to the air inlet hose 340 through a universal adapter 380.

[0065] Preferably, the gas source is an air pump or an air storage tank.

[0066] In this embodiment, the gas source can be either connected to an air pump to draw gas directly from the atmosphere, or a gas storage tank can be used. The specific choice can be made according to the actual situation, and no specific limitation is made in this article.

[0067] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0069] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A cooling device for ball screws in CNC machine tools, characterized in that, include: The machine tool body (100) includes a ball screw (110) extending along a first direction. A temperature monitoring component (200) is detachably mounted on the machine tool body (100) along the first direction, and the temperature monitoring component (200) is located on one side of the ball screw (110). The temperature monitoring component (200) is used to detect the temperature of the ball screw (110). A cold air knife assembly (300) is detachably mounted on the machine tool body (100) along the first direction, and the cold air knife assembly (300) is located on the other side of the ball screw (110). The cold air knife assembly (300) is used to blow air to cool the ball screw (110). The control cabinet (400) is connected to the temperature monitoring component (200) and the cold air knife component (300) respectively. The control cabinet (400) is used to control the start or stop of the cold air knife component (300) according to the signal of the temperature monitoring component (200).

2. The CNC machine tool ball screw cooling device according to claim 1, characterized in that, The temperature monitoring component (200) includes: Two first bracket mounting seats (210) are detachably mounted on the machine tool body (100), and the line connecting the two first bracket mounting seats (210) is parallel to the axis of the ball screw (110); The sensor mounting plate (220) is rotatably mounted between the two first bracket mounting bases (210), and its rotation axis is parallel to the first direction; Several sensor assemblies are installed at intervals and evenly on the sensor mounting plate (220).

3. The CNC machine tool ball screw cooling device according to claim 2, characterized in that, The cold air knife assembly (300) includes: Two second bracket mounting seats (310) are detachably mounted on the machine tool body (100) and are located on the side of the ball screw (110) away from the temperature monitoring component (200). The line connecting the two first bracket mounting seats (210) is parallel to the axis of the ball screw (110). The air knife mounting plate (320) is rotatably mounted between the two first bracket mounting seats (210), and its rotation axis is parallel to the first direction; Several air knives (330) are evenly spaced and installed on the air knife mounting plate (320).

4. The CNC machine tool ball screw cooling device according to claim 2 or 3, characterized in that, Both the first bracket mounting base (210) and the second bracket mounting base (310) are provided with an arc-shaped waist-shaped groove for limiting the rotation of the sensor mounting plate (220) and the air knife mounting plate (320).

5. The CNC machine tool ball screw cooling device according to claim 2, characterized in that, The sensor assembly includes a sensor bracket (230) and an infrared temperature sensor (240). The sensor bracket (230) has an L-shaped structure, with one side detachably mounted to the sensor mounting plate (220) by bolts, and the other side used to mount the infrared temperature sensor (240).

6. The CNC machine tool ball screw cooling device according to claim 3, characterized in that, The control cabinet (400) is equipped with several solenoid valves that are connected to the air knife (330). The air knife (330) is connected to the solenoid valves through an air inlet hose (340). The solenoid valves are used to control whether air is supplied to the air knife (330).

7. The CNC machine tool ball screw cooling device according to claim 6, characterized in that, The cold air knife assembly (300) also includes a triple air filter (350) and a refrigerated dryer (360). One end of the triple air filter (350) is connected to the air source, and the other end is connected to the refrigerated dryer (360). The refrigerated dryer (360) is connected to the solenoid valve. The triple filter is used to filter impurities in the gas passing through it, and the refrigerated dryer (360) is used to dry the gas passing through it.

8. The CNC machine tool ball screw cooling device according to claim 7, characterized in that, A single filter (370) is connected between the refrigerated dryer (360) and the solenoid valve.

9. The CNC machine tool ball screw cooling device according to claim 6, characterized in that, The air knife (330) is connected to the air intake hose (340) via an adapter (380).

10. The ball screw cooling device for CNC machine tools according to claim 7, characterized in that, The gas source is specifically an air pump or an air storage tank.

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