A high-speed CNC lathe spindle with adaptive dynamic balancing function

Abstract

The utility model discloses a high-speed CNC lathe spindle with adaptive dynamic balancing function, which relates to the technical field of lathes, and specifically, a high-speed CNC lathe spindle with adaptive dynamic balancing function. It includes a main body, a servo motor, an active rotating shaft, a driven rotating shaft, a high-speed CNC lathe spindle, a balancing block, a supporting rib, a booster cylinder, a temperature controller, a temperature sensor, and a turbo fan. In the utility model, an innovative high-speed CNC lathe spindle with three core functions of adaptive dynamic balancing, thermal deformation compensation and active cooling is provided. It adjusts the position of the balancing block through a servo motor to compensate for the unbalanced force of high-speed rotation in real time; uses a temperature sensor to monitor and automatically compensate for the influence of thermal deformation on accuracy; and uses a booster cylinder and a turbo fan to enhance the cooling effect of the spindle and control the temperature rise.

Description

Technical Field

[0001] The utility model relates to the technical field of lathes, in particular to a high-speed CNC lathe spindle with an adaptive dynamic balancing function. Background Art

[0002] A high-speed CNC lathe spindle with adaptive dynamic balancing function integrates three core technologies: adaptive dynamic balancing, thermal deformation compensation and active cooling. Adaptive dynamic balancing adjusts the position of the balancing block through a servo motor to compensate for the unbalanced force of high-speed rotation in real time; thermal deformation compensation uses a temperature sensor to monitor and automatically compensate for the impact of thermal deformation on accuracy; active cooling uses a booster cylinder and a turbo fan to enhance the cooling effect of the spindle and control the temperature rise. An existing high-speed CNC lathe spindle (publication number: CN105290430A) has the following drawbacks and needs further improvement.

[0003] 1. When traditional equipment rotates at high speed, it is very easy to vibrate due to factors such as uneven distribution of workpiece mass and unbalanced cutting force, which affects the processing accuracy and surface roughness. Moreover, as the spindle speed increases, the centrifugal unbalanced force will also increase rapidly, and the vibration problem will become more serious. It will reduce the processing efficiency and workpiece quality, and will also accelerate the wear of the spindle bearings and shorten the service life. Therefore, the traditional spindle has obvious limitations in the field of high-speed and high-precision processing, and it is difficult to meet the increasing processing requirements. Therefore, there is an urgent need for a CNC lathe spindle with adaptive dynamic balancing function.

[0004] 2. Traditional equipment will inevitably produce temperature rise and thermal deformation due to factors such as friction and cutting heat during long-term high-speed operation. This thermal deformation will cause slight radial and axial displacement of the spindle, thus affecting the processing accuracy. Especially in some precision processing fields with extremely high precision requirements, such as aerospace manufacturing, the impact of thermal deformation is more significant and cannot be ignored. However, due to the lack of thermal deformation detection and compensation mechanism, the traditional spindle cannot be actively adjusted to offset the thermal deformation effect. Therefore, the processing accuracy will gradually decrease when running at high speed for a long time, and the dimensional accuracy and geometric accuracy of the manufactured workpiece are difficult to guarantee, which restricts the further improvement of processing quality and efficiency. Therefore, there is an urgent need for a CNC lathe spindle with thermal deformation compensation.

[0005] 3. When traditional equipment runs at high speed for a long time, the spindle temperature is very likely to be too high due to the continuous accumulation of friction and cutting heat. Overheating of the spindle will not only aggravate the problem of thermal deformation and further affect the processing accuracy, but may also lead to a series of serious consequences such as lubrication failure and premature wear of bearings, thereby greatly shortening the service life of the spindle. However, traditional spindles usually only rely on simple fans to dissipate heat, and the cooling effect is limited, and the temperature rise problem during high-speed operation cannot be effectively controlled. Therefore, in the field of high-speed and high-precision processing, the cooling capacity of traditional spindles often cannot meet the requirements, which restricts the overall processing performance of the machine tool and also limits the ability of the spindle to operate at higher speeds and for longer periods of time. Therefore, there is an urgent need for a CNC lathe spindle with a spindle cooling design. Utility Model Content

[0006] The main purpose of the utility model is to provide a high-speed CNC lathe spindle with an adaptive dynamic balancing function, which can effectively solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: there is a high-speed CNC lathe spindle with adaptive dynamic balancing function, a servo motor is installed above the main body, an active rotating shaft is installed above the main body, a driven rotating shaft is installed above the active rotating shaft, a high-speed CNC lathe spindle is installed on one side of the main body, a balancing block is installed above the high-speed CNC lathe spindle, a temperature controller is installed on one side of the high-speed CNC lathe spindle, a temperature sensor is installed above the temperature controller, support ribs are installed on one side of the high-speed CNC lathe spindle, and a rear booster cylinder is installed above the support ribs.

[0008] Preferably, the exterior of the main body adopts a rounded corner design.

[0009] Preferably, the turbofan is rotatable and has a streamlined design.

[0010] Preferably, a cooling fan is installed outside the servo motor.

[0011] Preferably, slide rails are installed on both sides of the main shaft of the high-speed CNC lathe to interact with the balancing block.

[0012] Preferably, the active rotating shaft and the boost cylinder adopt a unified shaft design.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model can adjust the position of the balancing block in real time by adding a servo motor and a balancing block, thereby generating a corresponding centrifugal force, effectively offsetting the unbalanced force when the spindle rotates, and realizing adaptive dynamic balance. This adaptive dynamic balancing mechanism can significantly reduce the vibration of the spindle when it rotates at high speed, improve the processing accuracy and surface roughness, avoid reducing the processing efficiency and workpiece quality due to vibration, and can also slow down the wear of the spindle bearing and extend the service life.

[0015] 2. The utility model can monitor in real time the temperature rise of the spindle caused by factors such as friction and cutting heat during long-term high-speed operation by adding a temperature sensor and a temperature controller. When the spindle temperature rise is detected, the temperature controller will calculate the radial and axial displacement of the spindle caused by thermal expansion based on the temperature rise data, and make corresponding compensation adjustments to the spindle motion trajectory, thereby effectively offsetting the influence of thermal deformation on the processing accuracy. Through this thermal deformation detection and compensation mechanism, it can be ensured that the spindle can automatically correct its motion trajectory and keep the processing accuracy unaffected even if a certain degree of temperature rise and thermal deformation occurs during long-term high-speed processing. This is particularly important for precision processing fields such as aerospace that have extremely high requirements for dimensional and geometric accuracy. It can avoid the problem of reduced workpiece accuracy caused by thermal deformation, thereby ensuring a steady improvement in processing quality and efficiency.

[0016] 3. The utility model can provide high-pressure airflow around the spindle by adding a boost cylinder and a turbofan, while the turbofan uses its rotation and streamlined design to generate a strong rotating airflow, which forms a synergistic effect with the boost airflow, greatly enhancing the cooling efficiency of the spindle. This active cooling mechanism can effectively accelerate the heat dissipation on the spindle surface, and promptly remove the cutting heat and friction heat accumulated due to long-term high-speed operation, thereby effectively controlling the temperature rise of the spindle and avoiding overheating problems. Compared with traditional passive fan heat dissipation, the active enhanced cooling performance of this design is more outstanding, and can significantly extend the operating time of the spindle under high-temperature and high-speed conditions. Adequate cooling can not only slow down the thermal deformation of the spindle, but also ensure the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of part A of the utility model.

[0019] In the figure: 1. Main body; 2. Servo motor; 3. Active rotating shaft; 4. Driven rotating shaft; 5. High-speed CNC lathe spindle; 6. Balance block; 7. Support ribs; 8. Booster cylinder; 9. Temperature controller; 10. Temperature sensor; 11. Turbofan. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Example

[0024] See also Figure 1-2 , the utility model provides a technical solution:

[0025] A high-speed CNC lathe spindle with an adaptive dynamic balancing function, wherein a servo motor 2 is installed above the main body 1, an active rotating shaft 3 is installed above the main body 1, a driven rotating shaft 4 is installed above the active rotating shaft 3, a high-speed CNC lathe spindle 5 is installed on one side of the main body 1, a balancing block 6 is installed above the high-speed CNC lathe spindle 5, a temperature controller 9 is installed on one side of the high-speed CNC lathe spindle 5, a temperature sensor 10 is installed above the temperature controller 9, a support rib 7 is installed on one side of the high-speed CNC lathe spindle 5, and a rear booster cylinder 8 is installed above the support rib 7.

[0026] In this embodiment, first, a servo motor, an active rotating shaft and a driven rotating shaft are installed on the main body of the device. A balancing block is installed above the spindle of the high-speed CNC lathe. When the spindle rotates at high speed, if centrifugal unbalanced force is generated due to uneven distribution of workpiece mass or unbalanced cutting force, vibration problems will occur. At this time, the servo motor will adjust the position of the balancing block in real time according to the detected vibration signal, thereby generating corresponding centrifugal force, effectively offsetting the unbalanced force when the spindle rotates, and realizing adaptive dynamic balance. This adaptive dynamic balancing mechanism can significantly reduce the vibration of the spindle when it rotates at high speed, improve machining accuracy and surface quality, avoid reducing machining efficiency and workpiece quality due to vibration, and can also slow down the wear of the spindle bearings and extend the service life.

[0027] The device is equipped with a temperature controller and a temperature sensor on one side of the spindle. The temperature sensor is used to monitor the temperature rise of the spindle in real time due to factors such as friction and cutting heat during long-term high-speed operation. When the spindle temperature rise is detected, the temperature controller will calculate the radial and axial displacement of the spindle caused by thermal expansion based on the temperature rise data, and make corresponding compensation adjustments to the spindle motion trajectory, thereby effectively offsetting the impact of thermal deformation on machining accuracy. Through this thermal deformation detection and compensation mechanism, it can ensure that the spindle maintains machining accuracy without being affected by thermal deformation during long-term high-speed machining.

[0028] The equipment is equipped with support ribs and a booster cylinder on one side of the spindle, and a rotatable streamlined turbofan is designed. The booster cylinder can provide high-pressure airflow around the spindle, while the turbofan uses its rotation and streamlined design to generate a strong rotating airflow, which forms a synergistic effect with the booster airflow, greatly enhancing the cooling efficiency of the spindle. This active cooling mechanism can effectively accelerate the heat dissipation on the spindle surface, and promptly remove the cutting heat and friction heat accumulated due to long-term high-speed operation, thereby effectively controlling the temperature rise of the spindle and avoiding overheating problems. Adequate cooling can not only slow down the thermal deformation of the spindle and ensure machining accuracy, but more importantly, it can prevent serious consequences such as lubrication failure and premature wear of bearings due to overheating, fundamentally extending the service life of the spindle.

[0029] The following is a comparison of parameters between the utility model and traditional equipment:

[0030] parameter The utility model Traditional equipment Maximum spindle speed (rpm) 3000 20000 Maximum vibration value (μm) ＜1 ＞5 Surface roughness(μm) ＜0.2 ＞0.4 Axial thermal displacement (μm) ＜10 ＞30

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-speed CNC lathe spindle with adaptive dynamic balancing function, comprising a main body (1) and a turbo fan (11), characterized in that: A servo motor (2) is installed above the main body (1), an active rotating shaft (3) is installed above the main body (1), a driven rotating shaft (4) is installed above the active rotating shaft (3), a high-speed CNC lathe spindle (5) is installed on one side of the main body (1), a balancing block (6) is installed above the high-speed CNC lathe spindle (5), a temperature controller (9) is installed on one side of the high-speed CNC lathe spindle (5), a temperature sensor (10) is installed above the temperature controller (9), a support rib (7) is installed on one side of the high-speed CNC lathe spindle (5), and a rear boost cylinder (8) is installed above the support rib (7).

2. The high-speed CNC lathe spindle with adaptive dynamic balancing function according to claim 1 is characterized in that: The exterior of the main body (1) adopts a rounded corner design.

3. The high-speed CNC lathe spindle with adaptive dynamic balancing function according to claim 1 is characterized in that: The turbo fan (11) is rotatable and has a streamlined design.

4. The high-speed CNC lathe spindle with adaptive dynamic balancing function according to claim 1 is characterized in that: A cooling fan is installed outside the servo motor (2).

5. The high-speed CNC lathe spindle with adaptive dynamic balancing function according to claim 1 is characterized in that: Slide rails are installed on both sides of the high-speed CNC lathe main shaft (5) to interact with the balance block (6).

6. The high-speed CNC lathe spindle with adaptive dynamic balancing function according to claim 1 is characterized by: The active rotating shaft (3) and the boosting cylinder (8) adopt a unified shaft design.

Images