Spindle cooling device of numerical control machine tool
By designing a cooling device with upper and lower cooling frames and cooling pipes on the spindle of a CNC machine tool, the problem of heat generated by the spindle due to long-term high-speed rotation is solved, achieving efficient cooling of the spindle and improving machining accuracy and reliability.
Patent Information
- Application Number
- CN202520337362.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Traditional CNC machine tool spindles generate a lot of heat when rotating at high speed for a long time, which can cause spindle deformation or affect the working condition, and there is a lack of effective cooling devices.
Design a CNC machine tool spindle cooling device, including an upper cooling frame and a lower cooling frame, to cool the spindle motor and reducer and the heat generated when the spindle rotates, respectively, and to achieve efficient cooling by using cooling pipes and temperature sensors.
This effectively avoids the deformation problem caused by the heat generated by the spindle during long-term high-speed rotation, thus improving the machining accuracy and reliability of CNC machine tools.
Smart Images
Figure CN223834098U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooling technology, specifically a CNC machine tool spindle cooling device. Background Technology
[0002] The spindle of a CNC machine tool is one of the most critical components of a machine tool. Its performance directly affects the machining accuracy, efficiency, and reliability of the entire machine tool. The main function of the spindle is to support and drive the tool or workpiece to rotate. Therefore, its speed, rigidity, and accuracy are crucial to the machining effect. High-speed spindles can achieve high material removal rates, shorten machining time, and improve production efficiency. However, high-speed spindles will dissipate a lot of heat over long periods of time, so spindle cooling is also essential.
[0003] In the existing technology, the traditional CNC machine tool spindle is mainly composed of a spindle box, spindle, bearings, and transmission device. These components work together to ensure the smooth operation of the spindle.
[0004] However, traditional CNC machine tool spindles, lacking cooling devices, generate significant heat during prolonged high-speed rotation. This heat can cause spindle deformation or affect operational status due to heat conduction. Therefore, this invention proposes a CNC machine tool spindle cooling device to address these issues. Utility Model Content
[0005] The purpose of this invention is to provide a CNC machine tool spindle cooling device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a CNC machine tool spindle cooling device, the CNC machine tool spindle cooling device comprising: a spindle motor, a reducer mounted on one end of the spindle motor, and an upper cooling frame provided on the outside of the reducer;
[0007] The spindle box has a lower cooling frame at one end, and the spindle is located inside the lower cooling frame.
[0008] Preferably, the spindle motor is located at the upper end of the spindle box, and a reducer is provided at one end of the spindle motor. The outer wall of the reducer is covered with an upper cooling frame.
[0009] Preferably, the upper cooling frame is a hollow cylindrical structure, with the inner wall of the upper cooling frame fitting against the outer wall of the reducer and the outer wall of the upper cooling frame fitting against the inner wall of the spindle box. A temperature sensor is installed on the upper cooling frame near the spindle motor end, and two sets of mounting holes are opened on the surface of the upper cooling frame. An upper cooling pipe is installed inside the upper cooling frame.
[0010] Preferably, the upper cooling pipe passes through the mounting holes at both ends and is positioned on the outside. The upper cooling pipe has upper interfaces at both ends and is in an "S" shape, fitting against the inner surface of the upper cooling frame.
[0011] Preferably, the spindle box is a hollow cylindrical structure, with two sets of mounting holes at the end of the spindle box away from the spindle motor, and a lower cooling frame is installed on the inner wall of the end of the spindle box away from the spindle motor.
[0012] Preferably, the inner wall of the lower cooling frame is in contact with the outer wall of the spindle, a temperature sensor is installed at the end of the lower cooling pipe near the spindle motor, the lower cooling pipe is provided inside the lower cooling frame, the two ends of the lower cooling pipe pass through the mounting holes and are placed on the outside, and the two ends of the lower cooling pipe are equipped with lower interfaces.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This invention proposes a CNC machine tool spindle cooling device. In use, an upper cooling frame is installed between one end of the spindle box and the reducer. The upper cooling frame can cool the heat generated by the spindle motor and the reducer during operation. A lower cooling frame is installed at the other end of the spindle box between the spindle and the spindle box. The lower cooling frame can cool the heat generated when the spindle rotates, thereby achieving overall cooling of the device. This avoids the problem of spindle deformation caused by excessive heat generated during long-term high-speed rotation of the CNC machine tool spindle. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is an exploded view of the structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the internal structure of the upper cooling frame of this utility model.
[0018] Figure 4 The diagram shows the internal structure of the cooling frame at the lower end of the present invention.
[0019] In the diagram: 1. Spindle motor; 2. Reducer; 3. Upper cooling frame; 4. Spindle box; 5. Lower cooling frame; 6. Spindle; 7. Temperature sensor; 8. Upper cooling pipe; 9. Upper interface; 10. Mounting hole; 11. Lower cooling pipe; 12. Lower interface. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] In the description of this utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.
[0024] Example 1: Please refer to Figures 1 to 4 This utility model provides a technical solution: a CNC machine tool spindle cooling device, the CNC machine tool spindle cooling device includes: a spindle motor 1, a reducer 2 installed at one end of the spindle motor 1, and an upper cooling frame 3 provided on the outside of the reducer 2;
[0025] The spindle box 4 has a lower cooling frame 5 at one end, and the spindle 6 is installed inside the lower cooling frame 5.
[0026] In use, an upper cooling frame 3 is provided between one end of the spindle box 4 and the reducer 2. The upper cooling frame 3 can cool the heat generated by the spindle motor 1 and the reducer 2 during operation. At the other end of the spindle box 4, a lower cooling frame 5 is provided between the spindle 6 and the spindle box 4. The lower cooling frame 5 can cool the heat generated by the spindle 6 when it rotates, thereby achieving overall cooling of the device. This avoids the problem of the spindle 6 deforming due to the large amount of heat generated by the high-speed rotation of the CNC machine tool spindle for a long time.
[0027] Example 2: Based on Example 1, an upper cooling frame 3 is provided to reduce heat conduction between components. The upper cooling frame 3 is a hollow cylindrical structure. The inner wall of the upper cooling frame 3 is attached to the outer wall of the reducer 2, and the outer wall of the upper cooling frame 3 is attached to the inner wall of the spindle box 4. A temperature sensor 7 is installed on the end of the upper cooling frame 3 near the spindle motor 1. Two sets of mounting holes 10 are opened on the surface of the upper cooling frame 3. An upper cooling pipe 8 is installed inside the upper cooling frame 3. The spindle motor 1 is located at the upper end of the spindle box 4, and a reducer 2 is installed at one end of the spindle motor 1. The upper cooling frame 3 is wrapped around the outer wall of the reducer 2. The upper cooling frame 3 is located at the upper end of the spindle box 4 and can cool the heat generated by the reducer 2 and the spindle motor 1 during operation.
[0028] The spindle box 4 has a hollow cylindrical structure. Two sets of mounting holes 10 are provided at the end of the spindle box 4 away from the spindle motor 1. A lower cooling frame 5 is installed on the inner wall of the end of the spindle box 4 away from the spindle motor 1. The inner wall of the lower cooling frame 5 is in contact with the outer wall of the spindle 6. A temperature sensor 7 is installed at the end of the lower cooling pipe 11 near the spindle motor 1. The lower cooling pipe 11 is installed inside the lower cooling frame 5. The two ends of the lower cooling pipe 11 pass through the mounting holes 10 and are placed on the outside. The lower interface 12 is installed at both ends of the lower cooling pipe 11. The lower cooling frame 5 is located between the spindle box 4 and the spindle 6. The lower cooling frame 5 and the upper cooling frame 3 are located at the upper and lower ends of the spindle box 4, respectively. Both the lower cooling frame 5 and the upper cooling frame 3 are located between the moving parts and the spindle box 4, separating the moving parts from the spindle box 4, thereby reducing heat transfer while cooling the parts.
[0029] Example 3: Based on Example 2, an upper cooling pipe 8 is provided to cool the component more quickly. The two ends of the upper cooling pipe 8 pass through the mounting holes 10 and are placed on the outside. The upper cooling pipe 8 is provided with upper interfaces 9 at both ends. The upper cooling pipe 8 is in an "S" shape and fits into the inner surface of the upper cooling frame 3. The upper cooling pipe 8 is connected to the coolant device through the upper interfaces 9 at both ends. The upper cooling pipe 8 is in an "S" shape and fits into the inner surface of the upper cooling frame 3, which makes the cooling effect of the upper cooling pipe 8 on the upper cooling frame 3 stronger, so that the component can be cooled more quickly.
[0030] Working principle: In actual use, an upper cooling frame 3 is set between one end of the spindle box 4 and the reducer 2. The upper cooling frame 3 can cool the heat generated by the spindle motor 1 and the reducer 2 during operation. At the other end of the spindle box 4, a lower cooling frame 5 is set between the spindle 6 and the spindle box 4. The lower cooling frame 5 can cool the heat generated when the spindle 6 rotates, thereby achieving overall cooling of the device. This avoids the problem of the CNC machine tool spindle 6 deforming due to the large amount of heat generated by long-term high-speed rotation.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A CNC machine tool spindle cooling device, characterized in that: The CNC machine tool spindle cooling device includes: a spindle motor (1), a reducer (2) installed at one end of the spindle motor (1), and an upper cooling frame (3) provided on the outside of the reducer (2); The spindle box (4) has a lower cooling frame (5) at one end, and the spindle (6) is installed inside the lower cooling frame (5).
2. The CNC machine tool spindle cooling device according to claim 1, characterized in that: The main spindle motor (1) is located at the upper end of the main spindle box (4). A reducer (2) is provided at one end of the main spindle motor (1), and the outer wall of the reducer (2) is covered with an upper cooling frame (3).
3. The CNC machine tool spindle cooling device according to claim 1, characterized in that: The upper cooling frame (3) is a hollow cylindrical structure. The inner wall of the upper cooling frame (3) is in contact with the outer wall of the reducer (2), and the outer wall of the upper cooling frame (3) is in contact with the inner wall of the spindle box (4). A temperature sensor (7) is installed on the upper cooling frame (3) near the spindle motor (1). Two sets of mounting holes (10) are opened on the surface of the upper cooling frame (3). An upper cooling pipe (8) is installed inside the upper cooling frame (3).
4. A CNC machine tool spindle cooling device according to claim 3, characterized in that: The upper cooling pipe (8) passes through the mounting holes (10) at both ends and is placed on the outside. The upper cooling pipe (8) is provided with upper interfaces (9) at both ends. The upper cooling pipe (8) is in an "S" shape and fits into the inner surface of the upper cooling frame (3).
5. A CNC machine tool spindle cooling device according to claim 1, characterized in that: The spindle box (4) is a hollow cylindrical structure. Two sets of mounting holes (10) are provided at the end of the spindle box (4) away from the spindle motor (1). A lower cooling frame (5) is installed on the inner wall of the end of the spindle box (4) away from the spindle motor (1).
6. A CNC machine tool spindle cooling device according to claim 1, characterized in that: The inner wall of the lower cooling frame (5) is in contact with the outer wall of the spindle (6). A temperature sensor (7) is installed at the end of the lower cooling pipe (11) near the spindle motor (1). The lower cooling pipe (11) is installed inside the lower cooling frame (5). The two ends of the lower cooling pipe (11) pass through the mounting holes (10) and are placed on the outside. The two ends of the lower cooling pipe (11) are equipped with lower interfaces (12).