Balancing device and machine tool having the same
By combining hydraulic cylinders and pressure regulators with grating rulers and braking components, the problem of insufficient spindle gravity balance in machine tools was solved, enabling stable operation of machine tools under different working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG UCAN ROBOT TECH CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-29
AI Technical Summary
The existing balancing devices of machine tools cannot effectively balance the weight of the spindle when the spindle mass is large, resulting in unstable operation of the machine tool.
A hydraulic cylinder is used to generate force to balance the weight of the spindle, and the force generated by the hydraulic cylinder is adjusted by a pressure regulator to adapt to the vertical load of the spindle under different working conditions. Combined with a grating ruler to measure the movement distance and a braking component to provide vertical guidance and braking.
It achieves effective balance of spindle gravity under different working conditions, improving the machine tool's operational stability and applicability.
Smart Images
Figure CN224295368U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical processing equipment technology, and in particular to a balancing device and a machine tool having the same. Background Technology
[0002] When a machine tool is machining a workpiece, the machine tool spindle frequently needs to move up and down. Because the spindle needs to overcome gravity to move upwards, the driving force required for upward movement is greater than that required for downward movement, which may cause the machine tool to run unevenly. To ensure smooth operation, machine tools are usually equipped with balancing devices to balance the weight of the spindle. However, in existing technology, the balancing devices can only balance a relatively small force, and when the spindle mass is large, the balancing devices may not function properly. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a balancing device and a machine tool having the same, which can generate force through a hydraulic cylinder to balance the weight of the spindle, and can also adjust the magnitude of the force generated by the hydraulic cylinder to adapt to the vertical load of the spindle under different working conditions.
[0004] In a first aspect, the present invention provides a balancing device, which includes: a base; a lifting mechanism including a lifting assembly, a hydraulic cylinder, an oil reservoir, and a pressure regulator. The lifting assembly is movably mounted on the base in a vertical direction and is used to support the main shaft. The piston rod of the hydraulic cylinder is connected to the base, and the cylinder body of the hydraulic cylinder is mounted on the lifting assembly. The oil reservoir stores hydraulic oil and is connected to the cylinder body of the hydraulic cylinder. The pressure regulator is connected to the oil reservoir and is used to apply pressure to the hydraulic oil so that the piston rod balances the vertical load on the lifting assembly.
[0005] The balancing device provided by the first aspect of this utility model has at least the following beneficial effects:
[0006] The piston rod of the hydraulic cylinder can exert a force on the lifting assembly. The pressure regulator can change the force applied to the hydraulic oil in the reservoir to change the magnitude of the force generated by the piston rod of the hydraulic cylinder on the lifting assembly. On the one hand, it can realize the force generated by the hydraulic cylinder to balance the weight of the spindle. On the other hand, it can realize the adjustment of the magnitude of the force generated by the hydraulic cylinder to adapt to the vertical load of the spindle under different working conditions.
[0007] In one embodiment of this implementation, the balancing device further includes a grating ruler that extends vertically and can measure the vertical movement distance of the lifting assembly.
[0008] In one embodiment of this implementation, the lifting mechanism includes a braking component, which can be connected to the lifting component to provide a braking force to the lifting component in the vertical direction.
[0009] In one embodiment of this implementation, the base is equipped with a vertical guide rail, and the braking assembly includes a guide rail clamp, the guide rail clamp and the vertical guide rail working together to provide vertical guidance for the lifting assembly.
[0010] In one embodiment of this implementation, the lifting mechanism further includes a translation component, which is movably disposed on the base along a first horizontal direction, and the lifting component is movably disposed on the translation component along a vertical direction.
[0011] In one embodiment of this implementation, the hydraulic cylinder is located on one side of the lifting assembly along a second horizontal direction, which is perpendicular to the first horizontal direction.
[0012] In one embodiment of this implementation, a horizontal guide rail is mounted on the base, and the translation component and the horizontal guide rail are slidably engaged with the horizontal guide rail in a horizontal direction.
[0013] In one embodiment of this implementation, a limiting member is provided on the base. The limiting member is relatively close to and connected to the lifting assembly, and is used to limit the movement distance of the lifting assembly in the vertical direction.
[0014] In one embodiment of this implementation, the lifting mechanism further includes a drive component mounted on the base, which can drive the lifting component to move in the vertical direction.
[0015] Secondly, the present invention provides a machine tool, which includes a base, a spindle, and a balancing device as described in any embodiment of the first aspect of the invention. The balancing device is mounted on the base, and the spindle is mounted on the lifting assembly.
[0016] The machine tool provided by the second aspect of this utility model has at least the following beneficial effects:
[0017] By incorporating the balancing device of the first aspect of this invention into the machine tool, the gravity of the spindle can be balanced by a hydraulic cylinder.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0020] Figure 1This is a three-dimensional structural schematic diagram of the balancing device according to one embodiment of the present invention;
[0021] Figure 2 yes Figure 1 A side view of the balancing device;
[0022] Figure 3 yes Figure 1 A schematic diagram of part of the balancing device.
[0023] Figure label:
[0024] Balancing device 100; base 10; lifting mechanism 20; lifting assembly 21; translation assembly 22; hydraulic cylinder 23; piston rod 231; cylinder body 232; oil reservoir 24; guide rail clamp 25; drive assembly 26; grating ruler 30; vertical guide rail 40; horizontal guide rail 50; limiting component 60; first horizontal direction 70; second horizontal direction 80. Detailed Implementation
[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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 device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0029] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0030] Please see Figure 1 , Figure 1 This is a three-dimensional structural schematic diagram of a balancing device 100 according to one embodiment of the present invention. The present invention provides a balancing device 100, which includes a base 10 and a lifting mechanism 20. The lifting mechanism 20 includes a lifting assembly 21, a hydraulic cylinder 23, an oil reservoir 24, and a pressure regulator (not shown). The lifting assembly 21 is movably mounted on the base 10 in a vertical direction and is used to support a main shaft (not shown). The piston rod 231 of the hydraulic cylinder 23 is connected to the base 10, and the cylinder body 232 of the hydraulic cylinder 23 is mounted on the lifting assembly 21. The oil reservoir 24 stores hydraulic oil and is connected to the cylinder body 232 of the hydraulic cylinder 23. The pressure regulator is connected to the oil reservoir 24 and is used to apply pressure to the hydraulic oil so that the piston rod 231 balances the vertical load on the lifting assembly 21.
[0031] Specifically, the lifting assembly 21 and the base 10 can be slidably engaged in the vertical direction, the hydraulic cylinder 23 is driven in the vertical direction, the oil reservoir 24 is connected to the hydraulic cylinder 23 through an oil pipe (unlabeled), and the cylinder body 232 of the hydraulic cylinder 23 is located on one side of the lifting assembly 21 in the horizontal direction.
[0032] Understandably, the reservoir 24 stores hydraulic oil and gas. The gas exerts pressure on the hydraulic oil, forcing it through the oil pipe into the cylinder body 232 of the hydraulic cylinder 23. This, in turn, causes the hydraulic oil to push the piston rod 231 of the hydraulic cylinder 23, thereby generating force on the lifting assembly 21. The pressure regulator can change the gas pressure in the reservoir 24 by adding or removing gas, thus altering the pressure exerted by the gas on the hydraulic oil. This, in turn, changes the force exerted by the piston rod 231 on the lifting assembly 21, allowing the piston rod 231 to balance the vertical load on the lifting assembly 21.
[0033] In the balancing device 100 provided by this embodiment of the utility model, the piston rod 231 of the hydraulic cylinder 23 can generate a force on the lifting assembly 21, and the pressure regulator can change the force applied to the hydraulic oil in the oil reservoir 24, so as to change the magnitude of the force generated by the piston rod 231 of the hydraulic cylinder 23 on the lifting assembly 21. On the one hand, it can realize the force generated by the hydraulic cylinder 23 to balance the weight of the spindle. On the other hand, it can realize the adjustment of the magnitude of the force generated by the hydraulic cylinder 23 to adapt to the vertical load of the spindle under different working conditions.
[0034] In one embodiment of this implementation, please refer to Figure 3 , Figure 3 yes Figure 1 A schematic diagram of a portion of the structure of the balancing device 100. The balancing device 100 also includes a grating ruler 30, which extends vertically and can measure the vertical movement distance of the lifting assembly 21.
[0035] Specifically, the grating ruler 30 is mounted on the lifting assembly 21. It can be understood that the grating ruler 30 can measure the vertical movement distance of the lifting assembly 21, and the grating ruler 30 can be electrically connected to the machine tool controller (not shown). This configuration is beneficial for measuring the vertical position of the spindle mounted on the lifting assembly 21.
[0036] In one embodiment of this implementation, please refer to Figure 3 The lifting mechanism 20 includes a braking assembly (not labeled), which can be connected to the lifting assembly 21 to provide a braking force on the lifting assembly 21 in the vertical direction. It is understood that the braking assembly can be connected to the base 10 to prevent the lifting assembly 21 from falling when the balancing device is de-energized.
[0037] In one embodiment of this implementation, please refer to Figure 1 and Figure 3 The base 10 is equipped with a vertical guide rail 40, and the braking assembly includes a guide rail clamp 25. The guide rail clamp 25 and the vertical guide rail 40 work together to provide vertical guidance for the lifting assembly 21. Specifically, the guide rail clamp 25 is slidably engaged with the vertical guide rail 40 in the vertical direction. It is understood that the guide rail clamp 25 can clamp the vertical guide rail 40 to provide vertical braking for the lifting assembly 21.
[0038] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 , Figure 2 yes Figure 1A side view of the balancing device 100. The lifting mechanism 20 also includes a translation component 22, which is movably mounted on the base 10 along a first horizontal direction 70, and a lifting component 21 is movably mounted on the translation component 22 along a vertical direction. It is understood that the translation component 22 enables the lifting component 21 to move along the first horizontal direction 70, thereby enabling the main shaft mounted on the lifting component 21 to move along the first horizontal direction 70. This arrangement improves the applicability of the balancing device 100.
[0039] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 The hydraulic cylinder 23 is located on one side of the lifting assembly 21 along the second horizontal direction 80, which is perpendicular to the first horizontal direction 70. Specifically, the base 10, the translation assembly 22, the lifting assembly 21, and the hydraulic cylinder 23 are arranged sequentially along the second horizontal direction 80. It can be understood that the lifting assembly 21 can move along the first horizontal direction 70 with the translation assembly 22. The location of the hydraulic cylinder 23 on one side of the lifting assembly 21 along the second horizontal direction 80 reduces the overall size of the hydraulic cylinder 23 and the lifting assembly 21 in the first horizontal direction 70, thereby increasing the movable distance of the lifting assembly 21 in the first horizontal direction 70.
[0040] In one embodiment of this implementation, please refer to Figure 1 and Figure 2 A horizontal guide rail 50 is mounted on the base 10, and the translation component 22 is slidably engaged with the horizontal guide rail 50 in a horizontal direction. Specifically, the horizontal guide rail 50 extends along a first horizontal direction 70. It can be understood that the horizontal guide rail 50 can provide guidance for the movement of the translation component 22 in the first horizontal direction 70.
[0041] In one embodiment of this implementation, please refer to Figure 1 A limiting member 60 is provided on the base 10. The limiting member 60 can approach and connect with the lifting assembly 21 to limit the vertical movement distance of the lifting assembly 21. Specifically, two limiting members 60 are provided, one on each side of the lifting assembly 21 along the vertical direction. It can be understood that when the lifting assembly 21 moves vertically, it can approach and abut against the limiting member 60. By placing the two limiting members 60 on each side of the lifting assembly 21 along the vertical direction, the limiting member 60 can stop the moving lifting assembly 21, thereby limiting the vertical movement distance of the lifting assembly 21.
[0042] In one embodiment of this implementation, please refer to Figure 3The lifting mechanism 20 also includes a drive assembly 26, which is mounted on the base 10 and can drive the lifting assembly 21 to move vertically. Specifically, the drive assembly 26 is a linear motor, with its mover mounted on the base 10 and its stator connected to the lifting assembly 21. It can be understood that by setting the drive assembly 26 to drive the lifting assembly 21 to move vertically, the main shaft (not shown) mounted on the lifting assembly 21 can be driven to move vertically, which improves the applicability of the balancing device 100.
[0043] This utility model also provides a machine tool (not shown), including a base (not shown), a spindle (not shown), and a balancing device 100. The balancing device 100 is mounted on the base, and the spindle is mounted on a lifting assembly 21. Specifically, the base 10 of the balancing device 100 is connected to the base, and the lifting assembly 21 and the base 10 are located on the same side of the base in the vertical direction. It can be understood that the lifting assembly 21 can drive the spindle to move closer to or further away from the base in the vertical direction.
[0044] By adding the balancing device 100 of this embodiment to the machine tool, the gravity of the spindle can be balanced by the hydraulic cylinder 23.
[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A balancing device (100), characterized in that, include: Base (10); The lifting mechanism (20) includes a lifting assembly (21), a hydraulic cylinder (23), an oil reservoir (24), and a pressure regulator. The lifting assembly (21) is movably mounted on the base (10) in the vertical direction. The lifting assembly (21) is used to support the main shaft. The piston rod (231) of the hydraulic cylinder (23) is connected to the base (10). The cylinder body (232) of the hydraulic cylinder (23) is mounted on the lifting assembly (21). The oil reservoir (24) stores hydraulic oil and is connected to the cylinder body (232) of the hydraulic cylinder (23). The pressure regulator is connected to the oil reservoir (24) and is used to apply pressure to the hydraulic oil so that the piston rod (231) balances the vertical load on the lifting assembly (21).
2. The balancing device (100) according to claim 1, characterized in that, The balancing device (100) also includes a grating ruler (30) that extends vertically and can measure the vertical movement distance of the lifting assembly (21).
3. The balancing device (100) according to claim 1, characterized in that, The lifting mechanism (20) includes a braking assembly that can be connected to the lifting assembly (21) to provide braking force to the lifting assembly (21) in the vertical direction.
4. The balancing device (100) according to claim 3, characterized in that, The base (10) is equipped with a vertical guide rail (40), and the braking assembly includes a guide rail clamp (25). The guide rail clamp (25) and the vertical guide rail (40) work together to provide vertical guidance for the lifting assembly (21).
5. The balancing device (100) according to claim 1, characterized in that, The lifting mechanism (20) further includes a translation component (22), which is movably mounted on the base (10) along the first horizontal direction (70), and the lifting component (21) is movably mounted on the translation component (22) along the vertical direction.
6. The balancing device (100) according to claim 5, characterized in that, The hydraulic cylinder (23) is located on one side of the lifting assembly (21) along the second horizontal direction (80), which is perpendicular to the first horizontal direction (70).
7. The balancing device (100) according to claim 5, characterized in that, A horizontal guide rail (50) is installed on the base (10), and the translation component (22) and the horizontal guide rail (50) can slide together in the horizontal direction.
8. The balancing device (100) according to claim 1, characterized in that, A limiting member (60) is provided on the base (10). The limiting member (60) can be relatively close to and connected to the lifting assembly (21) to limit the movement distance of the lifting assembly (21) in the vertical direction.
9. The balancing device (100) according to claim 1, characterized in that, The lifting mechanism (20) further includes a drive assembly (26), which is mounted on the base (10) and can drive the lifting assembly (21) to move in the vertical direction.
10. A machine tool, characterized in that, It includes a base, a spindle, and a balancing device (100) according to any one of claims 1 to 9, the balancing device (100) being mounted on the base, and the spindle being disposed on the lifting assembly (21).