Sliding connection structure for linear motion of machine tool spindle

Abstract

The utility model relates to a sliding connection structure for linear motion of a machine tool spindle, which comprises a sliding body, a transverse bottom plate and a guide rail pair, the spindle is mounted in the sliding body, and the sliding body is connected with the transverse bottom plate through the guide rail pair; two mutually vertical side surfaces of the sliding body are respectively connected with the guide rail pair; the transverse bottom plate is of an L-shaped structure, and the two inner side faces perpendicular to each other are connected with the guide rail pairs respectively. The L-shaped sliding connection structure is adopted, and the supporting guide rails are arranged on the two side faces, perpendicular to each other, of the sliding body respectively, so that the connection rigidity and the dynamic performance are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of numerical control machine tools, and particularly relates to a sliding connection structure for the linear motion of a main shaft of a machine tool. Background Art

[0002] The linear motion of the machine tool spindle is achieved through the sliding connection between the slide and the guide rail. The slide, as the moving part that directly carries the spindle, is one of the main force-bearing parts during the processing, and its rigidity plays an important role in the processing effect of the workpiece. However, in order to achieve the high responsiveness and low inertia characteristics of the slide, its structure often adopts a lightweight design, which makes it difficult to achieve high rigidity.

[0003] In addition, the existing sliding connection structure is usually a sliding body connected to two parallel and coplanar guide rails. For vertical machining centers, due to different processing conditions, the sliding body will bear forces in various directions when moving up and down. Relying on a single-direction guide rail to provide support forces in various directions for the sliding body to perform processing operations, it is easy to cause the problem of insufficient rigidity of the sliding body in the direction where the bearing capacity of the guide rail is weak. Especially when the sliding body is in the limit stroke position, the problem of increased torque caused by the large overhang is difficult to solve. At the same time, since the connection surface of the sliding body is located on the same side surface, its force center is not concentric with the center of gravity, and there is an eccentric force problem, which will also affect the dynamic performance of the sliding body. Summary of the invention

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a sliding connection structure for the linear motion of a machine tool spindle with good rigidity and good dynamic performance.

[0005] In order to solve the above technical problems, the utility model is implemented through the following technical solutions: a sliding connection structure for the linear motion of a machine tool spindle, comprising a sliding body, a transverse base plate and a guide rail pair, the sliding body is equipped with a spindle, the sliding body and the transverse base plate are connected by a guide rail pair; two mutually perpendicular side surfaces of the sliding body are respectively connected to the guide rail pair; the transverse base plate is an L-shaped structure, and two mutually perpendicular inner side surfaces are respectively connected to the guide rail pair.

[0006] The above-mentioned sliding connection structure for the linear motion of the machine tool spindle, the guide pair includes a linear guide and a guide slider, the linear guide is respectively installed on the sliding body, the guide slider is respectively installed on the horizontal bottom plate, and the linear guide and the guide slider are slidably matched.

[0007] In the above-mentioned sliding connection structure for linear motion of a machine tool spindle, the number of the guide rail pairs is three, two of which are connected to the same side surface of the sliding body, and one is connected to a vertical side surface of the same side surface.

[0008] In the above-mentioned sliding connection structure for linear motion of a machine tool spindle, the transverse bottom plate is an integrally formed structure or is formed by fixedly connecting two flat plates.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts an L-shaped sliding connection structure, and by respectively arranging support rails on two mutually perpendicular sides of the sliding body, the load can be shared while also making up for the bearing capacity of the weak direction, greatly improving the connection rigidity. Moreover, the force center after the three guide rails are combined is closer to the center of gravity of the sliding body, the center of gravity force structure has a small torsional tendency, the corresponding connection matching parts have a smaller load, and the dynamic performance is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is one of the structural schematic diagrams provided in the embodiment of the utility model.

[0011] Figure 2 This is the second structural schematic diagram provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0012] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0013] In the description of the embodiments of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0014] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0015] Combination Figure 1 and Figure 2As shown, a sliding connection structure for linear motion of a machine tool spindle provided by an embodiment of the utility model comprises a sliding body 1, a transverse base plate 2, a first guide pair 3, a second guide pair 4 and a third guide pair 5. The sliding body 1 is used to install and clamp the machine tool spindle. The transverse base plate 2 is an L-shaped structure consisting of a rear base plate and a side base plate. The rear side surface of the sliding body 1 is connected to the rear base plate of the transverse base plate 2 through the first guide pair 3 and the second guide pair 4; the right side surface of the sliding body 1 is connected to the side base plate of the transverse base plate 2 through the third guide pair 5.

[0016] The first guide pair 3, the second guide pair 4 and the third guide pair 5 are all composed of a linear guide and a guide slider, and the linear guide and the guide slider are correspondingly slidably matched. The linear guides of the first guide pair 3 and the second guide pair 4 are both installed on the rear side of the sliding body 1, and the guide slider is installed on the rear bottom plate of the horizontal bottom plate 2; the linear guide of the third guide pair 5 is installed on the right side of the sliding body 1, and the guide slider is installed on the side bottom plate of the horizontal bottom plate 2.

[0017] The rear bottom plate and the side bottom plates of the transverse bottom plate 2 may be an integrally formed structure, or the rear bottom plate and the side bottom plates may be separate structures, and the rear bottom plate and the side bottom plates are fixedly connected.

[0018] When the embodiment of the utility model is used, the sliding body 1 moves up and down. Since the side and rear of the sliding body 1 are provided with guide rails for connection, the force directions thereof will be perpendicular to each other during the movement, which can effectively make up for the bearing capacity of the weak direction, thereby improving the rigidity of the sliding connection. Moreover, since the force center after the axis of the three linear guide rails is combined is closer to the center of gravity of the sliding body 1 than the existing structure, the torsion tendency of the center of gravity force structure is small, the load of the corresponding connection parts is smaller, and the dynamic performance is better.

[0019] Although the utility model is described in detail above, the utility model is not limited thereto, and those skilled in the art can make various modifications according to the principle of the utility model. Therefore, all modifications made according to the principle of the utility model should be understood to fall within the protection scope of the utility model.

Claims

1. A sliding connection structure for linear motion of a machine tool spindle, comprising a sliding body, a transverse bottom plate and a guide rail pair, wherein the main shaft is installed in the sliding body, and the sliding body and the transverse bottom plate are connected by the guide rail pair; characterized in that: The two mutually perpendicular side surfaces of the sliding body are respectively connected to the guide rail pair; the transverse bottom plate is an L-shaped structure, and the two mutually perpendicular inner side surfaces are respectively connected to the guide rail pair.

2. The sliding connection structure for linear motion of a machine tool spindle according to claim 1, characterized in that: The guide rail pair comprises a linear guide rail and a guide rail slider. The linear guide rail is respectively installed on the sliding body, and the guide rail slider is respectively installed on the transverse bottom plate. The linear guide rail and the guide rail slider are slidably matched.

3. The sliding connection structure for linear motion of a machine tool spindle according to claim 2, characterized in that: The number of the guide rail pairs is three, two of which are connected to the same side surface of the sliding body, and one is connected to a vertical side surface of the same side surface.

4. A sliding connection structure for linear motion of a machine tool spindle according to any one of claims 1 to 3, characterized in that: The transverse bottom plate is an integrally formed structure or is formed by fixedly connecting two flat plates.

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