A vertical five-axis cradle machine tool

Abstract

The utility model provides a vertical five -axis cradle lathe belongs to lathe equipment technical field. It solved the machining precision of existing vertical five -axis cradle lathe is insufficient and so on problem. This vertical five -axis cradle lathe, including base and Y axle sliding table, be connected with X axle moving mechanism on Y axle sliding table, be connected with Z axle moving mechanism on X axle moving mechanism, be fixed with main shaft box on Z axle moving mechanism, the front end fixed connection of base has cradle mechanism, the top fixed connection of base has seat frame of the integral type structure of showing '' M '' shape, the top of two vertical walls of seat frame is fixedly connected with Y axle guide rail respectively, the middle part fixed connection of seat frame roof beam has two Y axle additional guide rails of parallelly arranged with Y axle guide rail, and the both ends of Y axle sliding table are supported and slidingly connected on two Y axle guide rails, and the middle part of Y axle sliding table is supported and slidingly connected on Y axle additional guide rail. This lathe has improved the machining precision.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool equipment technology and relates to a vertical five-axis cradle machine tool. Background Technology

[0002] High-end CNC machine tools possess multiple functions such as high speed, high precision, intelligence, composite operation, multi-axis linkage, and internet communication. Their development level is an important indicator of a country's modern industrialization. High-speed cutting has become an important means of machining and manufacturing technology. Five-axis milling and turning machining centers are capable of machining many complex and special key parts. Five-axis machine tools have become a key basic equipment for the rapid research and development of equipment manufacturing and advanced defense weaponry products.

[0003] For example, a five-axis vertical cradle machining center with a box-in-box design (application number: CN202010736479.0; publication number: CN111730364A) disclosed in Chinese patent literature includes a base, a cradle mechanism, a tool magazine holder, a Y-axis moving mechanism, and an X-axis moving mechanism. The cradle mechanism has a first cradle support unit and a second cradle support unit at its two ends, respectively. A rocker arm is located between the first and second cradle support units, and an A-axis turntable is mounted on the rocker arm. A C-axis worktable is mounted on the A-axis turntable. A first column and a second column are fixedly mounted on both sides of the base. The Y-axis moving mechanism includes a Y-axis motor and a Y-axis slide connected to the Y-axis motor. The two ends of the Y-axis slide are slidably connected to the end faces of the first and second columns, respectively. The X-axis moving mechanism is fixedly mounted on the Y-axis slide between the first and second columns and reciprocates along the Y-axis direction under the drive of the Y-axis motor. The Z-axis moving mechanism is mounted on the X-axis moving mechanism and moves along the X-axis under the drive of the X-axis moving mechanism. The spindle box is mounted on the Z-axis moving mechanism and is perpendicular to the X-axis direction. The spindle box reciprocates along the Z-axis under the drive of the Z-axis moving mechanism.

[0004] The two ends of the Y-axis slide are connected to the top of the first column and the top of the second column, respectively, so that the Y-axis slide forms a structure similar to a simply supported beam with the middle suspended. The Y-axis slide bears the weight of the X-axis moving mechanism, the Z-axis moving mechanism and the spindle box, etc. The heavy weight of the components makes the Y-axis slide subject to a large bending moment, which makes it prone to large bending deformation, resulting in a reduction in machining accuracy. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a vertical five-axis cradle machine tool, which solves the technical problem of how to improve the machining accuracy of the machine tool.

[0006] The objective of this utility model can be achieved through the following technical solutions: A vertical five-axis cradle machine tool includes a base and a Y-axis slide. An X-axis moving mechanism is connected to the Y-axis slide, and a Z-axis moving mechanism is connected to the X-axis moving mechanism. A spindle box is fixed to the Z-axis moving mechanism. A cradle mechanism is fixedly connected to the front end of the base. The machine tool is characterized in that a U-shaped integrated frame is fixedly connected above the base. Y-axis guide rails are fixedly connected to the top of the two vertical walls of the frame. Two additional Y-axis guide rails, parallel to the Y-axis guide rails, are fixedly connected to the middle of the upper beam of the frame. The two ends of the Y-axis slide are supported and slidably connected to the two Y-axis guide rails, and the middle of the Y-axis slide is supported and slidably connected to the additional Y-axis guide rails.

[0007] When the machine tool is working, the Y-axis slide moves back and forth along the Y-axis on the Y-axis guide rail and the Y-axis auxiliary guide rail. The frame is a one-piece structure in the shape of a "U", which can increase the structural strength of the frame and make the frame more stable. The two ends of the Y-axis slide are supported by two Y-axis guide rails, and the middle of the Y-axis slide is supported by two Y-axis auxiliary guide rails. The four supports between the Y-axis slide and the frame can distribute the force, which can reduce the bending moment on the Y-axis slide and thus reduce the bending deformation of the Y-axis slide, thereby improving the machining accuracy of the machine tool.

[0008] In the aforementioned vertical five-axis cradle machine tool, several rectangular holes are arranged sequentially along the Y-axis on the outer surfaces of the top of the two vertical walls of the frame. These rectangular holes can reduce stress concentration at the connection between the vertical walls and the upper beam, and decrease local elastic deformation of the frame at stress concentration points, thereby improving the machining accuracy of the machine tool.

[0009] In the aforementioned vertical five-axis cradle machine tool, several triangular holes are also provided on the outer surfaces of the two vertical walls of the frame, and these triangular holes are located below the rectangular holes. The triangular structure is stable, and the triangular holes can reduce the weight of the frame while ensuring the structural stability of the vertical walls.

[0010] In the above-mentioned vertical five-axis cradle machine tool, a Y-axis drive motor located between two additional Y-axis guide rails is fixedly connected to the upper beam of the frame, and the drive shaft of the Y-axis drive motor is connected to the middle of the Y-axis slide.

[0011] The Y-axis drive motor is located between two additional Y-axis guide rails. The Y-axis drive motor acts on the middle of the Y-axis slide to drive the Y-axis slide, which can avoid force offset during the sliding process of the Y-axis slide and make the Y-axis slide smoothly.

[0012] In the aforementioned vertical five-axis cradle machine tool, a support plate is fixedly connected to the upper surface of the Y-axis slide, and the cable chains of the X-axis moving mechanism and the Z-axis moving mechanism are both placed on the support plate. The support plate can separate the cable chains from the Y-axis slide to avoid interference.

[0013] In the aforementioned vertical five-axis cradle machine tool, a chain-type tool magazine is provided between the base and the frame, located behind the cradle mechanism. The rear end of the chain-type tool magazine extends to the rear of the base. The chain-type tool magazine can accommodate more tools, facilitating tool changing and machining.

[0014] Compared with the prior art, the present invention has the following advantages: The frame is a one-piece structure in the shape of a "U". The two ends of the Y-axis slide are supported by two Y-axis guide rails, and the middle of the Y-axis slide is supported by two additional Y-axis guide rails. The four supports between the Y-axis slide and the frame can distribute the force, which can reduce the bending moment on the Y-axis slide and thus reduce the bending deformation of the Y-axis slide, thereby improving the machining accuracy of the machine tool. Attached Figure Description

[0015] Figure 1 This is a first-person perspective 3D view of this vertical five-axis cradle machine tool.

[0016] Figure 2 This is a second-view perspective 3D view of this vertical five-axis cradle machine tool.

[0017] Figure 3 This is a 3D perspective view of the vertical five-axis cradle machine tool.

[0018] In the diagram, 1. Base; 2. Frame; 2a. Vertical wall; 2a1. Rectangular hole; 2a2. Triangular hole; 2b. Top beam; 3. Y-axis slide; 4. Y-axis guide rail; 5. Y-axis auxiliary guide rail; 6. Y-axis drive motor; 7. Support plate; 8. Cradle mechanism; 9. X-axis moving mechanism; 10. Z-axis moving mechanism; 11. Spindle box; 12. Chain tool magazine. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1 and Figure 2As shown, a vertical five-axis cradle machine tool includes a base 1, a frame 2, and a Y-axis slide 3. A cradle mechanism 8 is fixedly connected to the front end of the base 1. An X-axis moving mechanism 9 is connected to the Y-axis slide 3, and a Z-axis moving mechanism 10 is connected to the X-axis moving mechanism 9. A spindle box 11 is fixed to the Z-axis moving mechanism 10, and a cutting tool is mounted on the spindle box 11. A chain-type tool magazine 12 is provided between the base 1 and the frame 2, located behind the cradle mechanism 8, with its rear end extending to the rear of the base 1. The X-axis moving mechanism 9, the Z-axis moving mechanism 10, the spindle box 11, and the cradle mechanism 8 can be referenced in patent documents with publication numbers CN111730364A, CN109940395A, or CN104117858A. The chain-type tool magazine 12 can be referenced in patent document with publication number CN113118839A.

[0021] like Figure 1 and Figure 3 As shown, the base 2 is a one-piece "U"-shaped structure, located above the base 1. The bottom ends of the two vertical walls 2a of the base 2 are fixedly connected to the base 1. Y-axis guide rails 4 are fixedly connected to the top ends of the two vertical walls 2a of the base 2, respectively. Two additional Y-axis guide rails 5, parallel to the Y-axis guide rails 4, are fixedly connected to the middle of the upper beam 2b of the base 2. The two additional Y-axis guide rails 5 are positioned rearward on the base 2 relative to the Y-axis guide rails 4. The two ends of the Y-axis slide 3 are supported and slidably connected to the two Y-axis guide rails 4, and the middle of the Y-axis slide 3 is supported and slidably connected to the additional Y-axis guide rails 5. A Y-axis slider corresponding to the Y-axis guide rail 4 and a Y-axis auxiliary slider corresponding to the Y-axis auxiliary guide rail 5 are fixedly connected to the bottom surface of the Y-axis slide 3. The Y-axis slider is sleeved on the Y-axis guide rail 4, and the Y-axis auxiliary slider is sleeved on the Y-axis auxiliary guide rail 5. A Y-axis drive motor 6 located between the two Y-axis auxiliary guide rails 5 is fixedly connected to the upper beam 2b of the frame 2. The drive shaft of the Y-axis drive motor 6 is connected to the middle of the Y-axis slide 3. A lead screw and nut assembly is provided between the drive shaft of the Y-axis drive motor 6 and the Y-axis slide 3. A support plate 7 is fixedly connected to the upper end surface of the Y-axis slide 3. The two ends of the support plate 7 extend outward from the sides of the Y-axis slide 3, and the two side edges of the support plate 7 have protruding flanges. The drag chains on the X-axis moving mechanism 9 and the Z-axis moving mechanism 10 are both placed on the support plate 7.

[0022] like Figure 1 and Figure 2As shown, several rectangular holes 2a1 arranged sequentially along the Y-axis are provided on the outer surfaces of the top ends of the two vertical walls 2a of the base 2. Y-axis holes, also arranged along the Y-axis, are provided inside the top ends of the two vertical walls 2a of the base 2. These Y-axis holes communicate with the rectangular holes 2a1, which can reduce stress concentration and decrease the weight of the base 2. Several triangular holes 2a2 are also provided on the outer surfaces of the two vertical walls 2a of the base 2, located below the rectangular holes 2a1.

[0023] During machine tool operation, the Y-axis slide 3 reciprocates along the Y-axis on the Y-axis guide rail 4 and the Y-axis auxiliary guide rail 5. The frame 2 has a U-shaped integrated structure, which increases the structural strength and stability of the frame 2. The two ends of the Y-axis slide 3 are supported by two Y-axis guide rails 4, and the middle of the Y-axis slide 3 is supported by two Y-axis auxiliary guide rails 5. The four supports between the Y-axis slide 3 and the frame 2 can distribute the force, reduce the bending moment on the Y-axis slide 3, and thus reduce the bending deformation of the Y-axis slide 3, thereby improving the machining accuracy of the machine tool.

[0024] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A vertical five-axis cradle machine tool, comprising a base (1) and a Y-axis slide (3), wherein an X-axis moving mechanism (9) is connected to the Y-axis slide (3), a Z-axis moving mechanism (10) is connected to the X-axis moving mechanism (9), a spindle box (11) is fixed on the Z-axis moving mechanism (10), and a cradle mechanism (8) is fixedly connected to the front end of the base (1), characterized in that, A base (1) is fixedly connected to a frame (2) with an integrated "U" shape. Y-axis guide rails (4) are fixedly connected to the top of the two vertical walls (2a) of the frame (2). Two additional Y-axis guide rails (5) are fixedly connected to the middle of the upper beam (2b) of the frame (2) and are parallel to the Y-axis guide rails (4). The two ends of the Y-axis slide (3) are supported and slidably connected to the two Y-axis guide rails (4). The middle of the Y-axis slide (3) is supported and slidably connected to the additional Y-axis guide rails (5).

2. The vertical five-axis cradle machine tool according to claim 1, characterized in that, The base (2) has several rectangular holes (2a1) arranged sequentially along the Y-axis on the outer surface of the top of the two vertical walls (2a).

3. The vertical five-axis cradle machine tool according to claim 2, characterized in that, Several triangular holes (2a2) are also provided on the outer side of the two upright walls (2a) of the frame (2), and the triangular holes (2a2) are located below the rectangular hole (2a1).

4. The vertical five-axis cradle machine tool according to any one of claims 1-3, characterized in that, A Y-axis drive motor (6) is fixedly connected to the upper beam (2b) of the frame (2) between two additional Y-axis guide rails (5), and the drive shaft of the Y-axis drive motor (6) is connected to the middle of the Y-axis slide (3).

5. The vertical five-axis cradle machine tool according to any one of claims 1-3, characterized in that, A tray (7) is fixedly connected to the upper surface of the Y-axis slide (3), and the drag chain on the X-axis moving mechanism (9) and the drag chain of the Z-axis moving mechanism (10) are both placed on the tray (7).

6. The vertical five-axis cradle machine tool according to any one of claims 1-3, characterized in that, A chain-type tool magazine (12) is provided between the base (1) and the frame (2) and located behind the cradle mechanism (8), with the rear end of the chain-type tool magazine (12) extending to the rear of the base (1).

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