Magnetic suspension driving high-speed machine head

Abstract

The utility model discloses a magnetic suspension driving high-speed machine head, and aims to solve the problems that the loss of a motor is accelerated and the normal processing effect of machine head parts is influenced under the condition of large current ratio difference. According to the technical scheme, the machine head is characterized by comprising a machine head body, the machine head body is connected with an extension frame, the extension frame is connected with a locking air cylinder, the locking air cylinder is fixedly arranged on a ram, and the machine head body is arranged on the ram in a sliding mode. The locking air cylinder can provide upward driving force for the linear motor during upward driving, so that the load of the motor is reduced, the current ratio difference of up-down driving can be controlled to be about 20%, the loss of the motor is effectively reduced, the normal machining effect of machine head parts is guaranteed, meanwhile, the machine head can fall down in case of sudden power failure, and the working efficiency is improved. The buffering effect can be achieved through the locking air cylinder, the falling amount is controlled to be 0.01 mm, and the effect of protecting the workpiece and the machine head is achieved.

Description

Technical Field

[0001] The utility model relates to the field of gantry machining, and more specifically, it relates to a high-speed head driven by magnetic levitation. Background Art

[0002] A gantry machining center refers to a machining center in which the axis of the main shaft Z is perpendicular to the workbench. The machining center is composed of multiple components, and the process performance of each component directly affects its use efficiency. The head component plays a very important role in machining.

[0003] When the existing head component is driven upward and downward, a linear motor is generally used, so that the weight of the Z-axis will be directly fed back to the motor thrust. Therefore, when driving upward: the linear motor must overcome the action of gravity and other additional loads. Therefore, a larger driving force is usually required for upward driving, resulting in higher current consumption.

[0004] When driving downward: In contrast, gravity may become a helping force, reducing the driving force required by the motor. Therefore, the current consumption during downward driving is usually lower, thus forming a large current ratio difference. In this case of a large current ratio difference, the loss of the motor will be accelerated, affecting the normal machining effect of the head component.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0006] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a high-speed head driven by magnetic levitation to solve the above problems.

[0007] The utility model realizes the above purpose through the following technical solutions: A high-speed head driven by magnetic levitation includes a head main body, the head main body is connected with an extension frame, the extension frame is connected with a locking cylinder, the locking cylinder is fixedly arranged on the ram, and the head main body is slidably arranged on the ram.

[0008] The utility model is further arranged as: There are two locking cylinders, and they are symmetrically arranged on both sides of the head main body.

[0009] The utility model is further arranged as: The head main body is of an integral structure.

[0010] The utility model is further arranged as: A number of ribs are arranged inside the head main body.

[0011] The utility model is further arranged as: The ribs include vertical ribs arranged along the height direction of the head main body and annular ribs arranged perpendicular to the height direction of the head main body. Both the vertical ribs and the annular ribs are arranged inside the head main body.

[0012] The utility model is further configured such that the vertical ribs and the annular ribs are intertwined with each other.

[0013] The utility model is further configured such that the interweaving net formed by the intersection of the vertical ribs and the annular ribs is symmetrically arranged along the main axis center line of the machine head body.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] When the locking cylinder drives upward, it can provide an upward driving force for the linear motor at the same time, thereby reducing the motor load. The current ratio difference of the up and down driving can be controlled at about 20%, effectively reducing the loss of the motor, ensuring the normal processing effect of the machine head components. At the same time, when a sudden power failure occurs, the machine head will fall, and the locking cylinder can play a buffering effect, controlling the falling amount to 0.01 mm, achieving the effect of protecting the workpiece and the machine head. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Reference numerals: 1, machine head body; 2, extension frame; 3, locking cylinder; 4, vertical ribs; 5, annular ribs. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment:

[0020] A magnetically levitated driven high-speed machine head, as Figure 1As shown in the figure, it includes a machine head main body 1. The machine head main body 1 is connected to an extension frame 2, and the extension frame 2 is connected to a locking cylinder 3. The locking cylinder 3 is fixedly arranged on the ram. The ram is a sliding member arranged on the crossbeam. The component for driving the machine head main body 1 to move left and right is a prior art and will not be introduced in detail here. The machine head main body 1 is slidably arranged on the ram. When the locking cylinder 3 drives upward, it can provide an upward driving force for the linear motor together, thereby reducing the motor load. The current ratio difference of the up and down drive can be controlled at about 20%, effectively reducing the loss of the motor and ensuring the normal processing effect of the machine head components. At the same time, in the event of a sudden power failure, the machine head will drop, and the locking cylinder 3 can play a buffering effect, controlling the drop amount to 0.01 mm, protecting the workpiece and the machine head.

[0021] There are two locking cylinders 3, and they are symmetrically arranged on both sides of the machine head main body 1. Through the symmetrical arrangement, the overall force on the machine head main body 1 is more uniform, better realizing the effect of controlling the current ratio difference. At the same time, the symmetrical layout realizes the effect of reasonably distributing the mass, thereby reducing the vibration and unbalanced moment of the machine tool, and further ensuring the stability and accuracy of the machine tool during the processing process.

[0022] The machine head main body 1 is of an integral structure, thereby improving the structural rigidity of the machine head main body 1, effectively preventing the influence of resonance and thermal changes generated during processing, and strengthening the cutting rigidity.

[0023] At the same time, there are several rib strips inside the machine head main body 1. The rib strips strengthen the structural strength of the machine head main body 1, can effectively resist the suction force of the linear motor magnetic plate in the stroke axial direction, are not easily deformed compared with the traditional cast machine head, and the accuracy is not easily changed to ensure the processing effect.

[0024] And the rib strips include vertical rib strips 4 arranged along the height direction of the machine head main body 1 and annular rib strips 5 arranged perpendicular to the height direction of the machine head main body 1. The vertical rib strips 4 and the annular rib strips 5 are both arranged inside the machine head main body 1. By making the vertical rib strips 4 provide good tensile force for the machine head main body 1, it can effectively resist the suction force of the linear motor magnetic plate in the stroke axial direction, further improving the structural strength of the machine head main body 1. The annular rib strips 5 connect the inner wall surfaces of the machine head main body 1 together, improving the stability of the machine head main body 1.

[0025] At the same time, the vertical rib strips 4 and the annular rib strips 5 are intertwined with each other, thus forming a network structure. Through the network structure, a multi-directional strengthening and connecting effect is formed, better ensuring the effect of resisting the suction force of the linear motor magnetic plate in the stroke axial direction.

[0026] Meanwhile, the interweaving net formed by the vertical ribs 4 and the annular ribs 5 is symmetrically arranged along the main axis center line of the machine head body 1. Thus, through the symmetrical arrangement, the overall force on the machine head body 1 is more uniform, and at the same time, the effect of reasonable mass distribution is achieved by adopting a symmetrical layout, thereby reducing the vibration and unbalanced torque of the machine tool, and further ensuring the stability and accuracy of the machine tool during the machining process.

[0027] And through the above settings, the main axis center line is close to the Z-axis track at the position of the movement center of gravity, effectively eliminating the generation of unbalanced torque, and ensuring the accuracy of micro-feed and long-term machining accuracy.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-speed head driven by magnetic levitation, characterized in that: It includes a machine head main body, the machine head main body is connected with an extension frame, the extension frame is connected with a locking cylinder, the locking cylinder is fixedly arranged on the ram, and the machine head main body is slidably arranged on the ram.

2. The high-speed machine head driven by magnetic levitation according to claim 1, wherein: There are two locking cylinders, and they are symmetrically arranged on both sides of the machine head main body.

3. A magnetic levitation drive high-speed machine head according to claim 1, characterized in that: The machine head main body is of an integral structure.

4. A magnetic levitation drive high-speed machine head according to claim 1, characterized in that: A number of rib strips are arranged inside the machine head main body.

5. A magnetic levitation drive high-speed machine head according to claim 4, characterized in that: The rib strips include vertical rib strips arranged along the height direction of the machine head main body and annular rib strips arranged perpendicular to the height direction of the machine head main body. Both the vertical rib strips and the annular rib strips are arranged inside the machine head main body.

6. The magnetic levitation drive high-speed machine head according to claim 5, characterized in that: The vertical rib strips and the annular rib strips are intertwined with each other.

7. A magnetic levitation drive high-speed machine head according to claim 6, characterized in that: The intertwined network formed by the intersection of the vertical rib strips and the annular rib strips is symmetrically arranged along the main axis center line of the machine head main body.

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