Single-arm five-axis gantry machining center

Abstract

The embodiment of the application provides a single-arm five-axis gantry machining center, which comprises a rack, a translation mechanism, a cradle driving mechanism, a single-arm cradle and a workbench. The translation mechanism is slidably arranged on the rack, the cradle driving mechanism is arranged on the translation mechanism, the single-arm cradle has only one extension arm, the extension arm is connected to the cradle driving mechanism, the cradle driving mechanism can drive the single-arm cradle to rotate around a first axis, and the workbench is arranged on the cradle rotary table and can rotate around a second axis. The single-arm five-axis gantry machining center of the application adopts a single-arm cradle, one side of the single-arm cradle away from the cradle driving mechanism has no rotating support structure, the structure is simplified, the single-arm cradle is more flexible, and the interference problem caused by the complex structure of a double-arm cradle in the prior art is avoided.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment technology, specifically to a single-arm five-axis gantry machining center. Background Technology

[0002] A five-axis gantry machining center is a high-tech, high-precision machine tool specifically designed for machining complex curved surfaces. This type of machine tool system has a significant impact on a country's aerospace, military, scientific research, precision instruments, and high-precision medical equipment industries. The cradle mechanism of the five-axis gantry machining center provided in related technologies is a double-arm cradle. The cradle includes a main body, with extension arms on opposite sides. Both extension arms are rotatably connected to corresponding rotating seats on the machine frame. Because of the two extension arms, the cradle has a relatively complex structure, limited flexibility, and is prone to interference. One extension arm connects to the drive mechanism, while the other extension arm requires a support seat on the machine tool, creating significant obstruction on that side and increasing the likelihood of interference.

[0003] In view of the above, this application is hereby submitted. Utility Model Content

[0004] To address one of the aforementioned technical deficiencies, this application provides a single-arm five-axis gantry machining center.

[0005] The present invention adopts the following technical solution: A single-arm five-axis gantry machining center, comprising: frame; A translation mechanism, which is slidably mounted on the frame; A cradle drive mechanism, wherein the cradle drive mechanism is disposed on the translation mechanism; A single-arm cradle, wherein the single-arm cradle has only one extension arm, the extension arm is connected to the cradle drive mechanism, and the cradle drive mechanism can drive the single-arm cradle to rotate about a first axis; A worktable is provided on the cradle turntable and is rotatable about a second axis.

[0006] Optionally, the translation mechanism includes a slide and a mounting housing; The slide table is slidably mounted on the frame; The mounting housing is disposed on the slide table, and the cradle drive mechanism is disposed on the mounting housing; The single-arm cradle has gaps with the slide and the frame.

[0007] Optionally, the slide table is provided with an avoidance groove on one side corresponding to the single-arm cradle.

[0008] Optionally, the mounting housing and the single-arm cradle are arranged sequentially along the moving direction of the slide, and the single-arm cradle is located on one side of the end of the slide.

[0009] Optionally, a slider is provided on the slide table, and a guide rail is provided on the frame; The slider is slidably connected to the guide rail; The slide and the mounting shell are integrally formed.

[0010] Optionally, the mounting housing has a transverse groove; The cradle drive mechanism includes a roller cam assembly and a drive shaft; The drive shaft is rotatably mounted in the transverse groove; The roller cam assembly is mounted on the mounting housing and is connected to the drive shaft. The drive shaft and the single-arm cradle are connected by a drive shaft.

[0011] Optionally, the transverse groove extends through the mounting housing; The transverse groove includes a central groove and outwardly expanding grooves located at both ends of the central groove; A bearing is installed inside the outer expansion groove; The drive shaft passes through the transverse groove, and the bearing is sleeved on the drive shaft.

[0012] Optionally, the mounting housing has a longitudinal groove; The longitudinal groove connects to the transverse groove; The roller cam assembly includes a roller component and a cam component, wherein the roller component is rotatably disposed in the longitudinal groove; The cam element is located in the transverse groove, and the cam element is connected to the drive shaft in a driving connection. The roller component and the cam component are in a transmission engagement.

[0013] Optionally, the single-arm five-axis gantry machining center includes a base; The base has fixing holes; A connecting rod is provided on the frame, and the connecting rod passes through the fixing hole; The frame is supported on the base.

[0014] Optionally, the connecting rod has external threads; The fixing hole passes through the base; The connecting rod passes through the fixing hole, and a limit nut is threadedly connected to the structural section of the connecting rod extending out of the base. A foot cup seat is provided at the bottom end of the connecting rod.

[0015] By adopting the above technical solution, this application has the following beneficial effects: The single-arm five-axis gantry machining center of this application adopts a single-arm cradle. The side of the single-arm cradle away from the cradle drive mechanism has no support structure, which simplifies the structure and makes the single-arm cradle move more nimbly, avoiding the interference problem caused by the complex structure of the double-arm cradle in the prior art. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This shows a perspective view of the single-arm five-axis gantry machining center provided in an embodiment of this application; Figure 2 This illustration shows a schematic diagram of the cooperative structure of the translation mechanism, cradle drive mechanism, and single-arm cradle of the single-arm five-axis gantry machining center provided in an embodiment of this application. Figure 3 This diagram shows a schematic of the mounting housing of a single-arm five-axis gantry machining center provided in an embodiment of this application. Figure 4 This shows another perspective view of the mounting housing of the single-arm five-axis gantry machining center provided in an embodiment of this application; Figure 5 An exploded view shows the cooperative structure of the translation mechanism, cradle drive mechanism, and single-arm cradle of the single-arm five-axis gantry machining center provided in the embodiments of this application.

[0017] In the diagram: 1. Frame; 11. Guide rail; 2. Translation mechanism; 21. Slide table; 211. Clearance groove; 22. Mounting shell; 221. Transverse groove; 2211. Central groove; 2212. Outer expansion groove; 222. Longitudinal groove; 23. First motor; 3. Cradle drive mechanism; 31. Drive shaft; 32. Roller component; 33. Cam component; 34. Bearing; 35. Rotation drive component; 4. Single-arm cradle; 41. Extension arm; 6. Base; 7. Y-axis translation mechanism; 71. Y-axis translation seat; 72. Second motor; 8. Z-axis translation mechanism; 81. Z-axis translation seat; 82. Third motor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] like Figures 1 to 5 As shown in the figure, this application embodiment provides a single-arm five-axis gantry machining center, including: a frame 1, a translation mechanism 2, a cradle drive mechanism 3, a single-arm cradle 4, and a worktable (not shown). The translation mechanism 2 is slidably mounted on the frame 1, the cradle drive mechanism 3 is mounted on the translation mechanism 2, and the single-arm cradle 4 has only one extension arm 41, that is, the single-arm cradle 4 has a cradle body, the extension arm 41 is mounted on one side of the cradle body, and the other side of the cradle body is suspended without a rotational support structure. The extension arm 41 is connected to the cradle drive mechanism 3, which can drive the single-arm cradle 4 to rotate around a first axis. The worktable is mounted on the cradle turntable and can rotate around a second axis.

[0022] It should be noted that the worktable can be mounted on the cradle body. The worktable has a rotating base for loading the workpiece and can rotate the workpiece to adjust its angle. Alternatively, a rotary drive mechanism can be installed on the cradle body, with the worktable mounted on it, and the rotary drive mechanism driving the entire worktable to rotate. The workpiece to be processed is mounted on the worktable. It should be noted that regardless of the arrangement method used, these are mature technologies in the field, and this application does not improve the worktable or the mating structure between the worktable and the cradle.

[0023] The single-arm five-axis gantry machining center of this application adopts a single-arm cradle 4. The side of the single-arm cradle 4 away from the cradle drive mechanism 3 has no support structure, which simplifies the structure and makes the single-arm cradle 4 move more flexibly, avoiding the interference problem caused by the complex structure of the double-arm cradle in the prior art.

[0024] In some possible implementations, the translation mechanism 2 includes a slide 21 and a mounting housing 22. The slide 21 is slidably mounted on the frame 1, and the mounting housing 22 is mounted on the slide 21. The cradle drive mechanism 3 is mounted on the mounting housing 22. The single-arm cradle 4 has gaps between itself and both the slide 21 and the frame 1. No rotational support structure is provided between the single-arm cradle 4 and the slide 21, thus simplifying the structure and avoiding the interference problems associated with a rotational support structure.

[0025] In some possible implementations, the slide 21 is provided with a clearance groove 211 on one side corresponding to the single-arm cradle 4. When the single-arm cradle 4 rotates, part of the structure passes through the clearance groove 211 and will not directly contact the slide 21.

[0026] In some possible implementations, such as Figure 2 As shown, the mounting shell 22 and the single-arm cradle 4 are arranged sequentially along the moving direction of the slide table 21, and the single-arm cradle 4 is located on one end side of the slide table 21. In this embodiment, the end of the single-arm cradle 4 opposite to the extension arm 41 is suspended, and the extension arm 41 is not required. Therefore, there is no need to reserve a position for a rotating support seat on the slide table 21, so that the cradle body of the single-arm cradle 4 can be set at the end of the slide table 21 opposite to the mounting shell 22, which helps to reduce the size of the slide table 21 and save space.

[0027] In some possible implementations, a slider is provided on the slide table 21, and a guide rail 11 is provided on the frame 1. The slider is slidably connected to the guide rail 11. The slide table 21 and the mounting shell 22 are not fixedly connected by screws or welding. The slide table 21 and the mounting shell 22 are integrally formed, such as by casting, forging or stamping. The outer shell of the translation mechanism 2 is a single piece, with high structural strength and high structural precision, which is conducive to performing high-precision operation tasks.

[0028] In some possible implementation schemes, combined Figures 3 to 5 As shown, the mounting housing 22 has a transverse groove 221, and the cradle drive mechanism 3 includes a roller cam assembly and a drive shaft 31. The drive shaft 31 is rotatably disposed in the transverse groove 221. The roller cam assembly is disposed on the mounting housing 22 and is connected to the drive shaft 31. The drive shaft 31 is connected to the single-arm cradle 4.

[0029] The cradle drive mechanism 3 of this application adopts a roller cam assembly, which has the advantages of high precision, high efficiency, low maintenance cost and long service life, and is conducive to achieving precision machining.

[0030] In some possible implementations, the transverse groove 221 extends through the mounting shell 22. The transverse groove 221 includes a central groove 2211 and an outer expansion groove 2212 located at both ends of the central groove 2211. A bearing 34 is disposed in the outer expansion groove 2212. The drive shaft 31 passes through the transverse groove 221, and the bearing 34 is sleeved on the drive shaft 31.

[0031] In this application, the slide table 21 and the mounting shell 22 are integrally formed, and the transmission shaft 31 has a large outer diameter and strong rigidity, which is beneficial to the transmission of power. The two bearings 34 are set to support the transmission shaft 31 and reduce the rotational resistance of the transmission shaft 31.

[0032] In some possible implementations, the mounting housing 22 has a longitudinal groove 222 that communicates with the transverse groove 221. The roller cam assembly includes a roller 32 and a cam 33. The roller 32 is rotatably disposed in the longitudinal groove 222, and the cam 33 is located in the transverse groove 221. The cam 33 is drive-connected to the drive shaft 31, and the roller 32 and the cam 33 are drive-engaged.

[0033] The cradle drive mechanism 3 also includes a rotary drive component 35, such as a motor, transmitter, or generator, located outside the mounting housing 22 and secured to the mounting opening by fasteners. The rotary drive component 35 and the roller component 32 are connected in a driving manner.

[0034] In some possible implementations, the single-arm five-axis gantry machining center includes a base 6 with fixing holes, a connecting rod on the frame 1 passing through the fixing holes, and the frame 1 supported on the base 6.

[0035] In this implementation scheme, the frame 1 can be made of cast iron, and the base 6 can be made of marble. The marble base 6, with its high flatness and straightness, provides a stable reference surface for the machine tool, ensuring machining accuracy. Marble undergoes long-term natural aging, resulting in a uniform structure that is not easily deformed by temperature changes and has a low coefficient of linear expansion. Marble also has high hardness, strong wear resistance, long service life, and is rust-free and resistant to acid and alkali corrosion.

[0036] In some possible implementations, the connecting rod has external threads, a fixing hole passes through the base 6, the connecting rod extends through the fixing hole, and a limit nut is threadedly connected to the structural section of the connecting rod extending out of the base 6. A foot cup seat is provided at the bottom end of the connecting rod. The nut is located between the base 6 and the foot cup seat, and the nut serves to limit the movement of the marble base 6. The marble base 6 can be leveled by tightening the nuts on each connecting rod.

[0037] It should be noted that the translation structure mentioned above is an X-axis translation structure. The X-axis translation structure also includes a first motor 23 and a first lead screw. The first lead screw is threaded onto a nut on the slide table 21. The first motor is mounted on the frame 1. The first motor 23 and the second lead screw are connected in a transmission connection to drive the slide table 21 to translate.

[0038] The frame 1 can also be equipped with a Y-axis translation mechanism 72. The Y-axis translation mechanism 72 includes a Y-axis translation seat 71, a second motor 72, and a second lead screw. The Y-axis translation seat 71 is slidably mounted on the machine tool. The second lead screw is threadedly connected to the Y-axis translation seat 71. The second motor 72 is mounted on the machine tool and is driven by the second lead screw to drive the Y-axis translation seat 71 to translate along the Y direction.

[0039] A Z-axis translation mechanism 82 can also be installed on the frame 1. The Z-axis translation mechanism 82 includes a Z-axis translation seat 81, a third motor 82, and a third lead screw. The Z-axis translation seat 81 is slidably mounted on the Y-axis translation seat 71. The third lead screw is threadedly connected to the Z-axis translation seat 81. The third motor 82 is mounted on the Y-axis translation seat 71 and is driven by the third lead screw to drive the Z-axis translation seat 81 to translate along the Z direction. A cutting head is provided at the end of the Z-axis translation seat 81 for machining the workpiece.

[0040] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0041] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0042] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A single-arm five-axis gantry machining center, characterized in that, include: frame; A translation mechanism, which is slidably mounted on the frame; A cradle drive mechanism, wherein the cradle drive mechanism is disposed on the translation mechanism; A single-arm cradle, wherein the single-arm cradle has only one extension arm, the extension arm is connected to the cradle drive mechanism, and the cradle drive mechanism can drive the single-arm cradle to rotate about a first axis; A worktable is provided on the cradle turntable and is rotatable about a second axis.

2. The single-arm five-axis gantry machining center according to claim 1, characterized in that, The translation mechanism includes a slide and a mounting housing; The slide table is slidably mounted on the frame; The mounting housing is disposed on the slide table, and the cradle drive mechanism is disposed on the mounting housing; The single-arm cradle has gaps with the slide and the frame.

3. The single-arm five-axis gantry machining center according to claim 2, characterized in that, The slide is provided with an avoidance groove on one side corresponding to the single-arm cradle.

4. The single-arm five-axis gantry machining center according to claim 2, characterized in that, The mounting housing and the single-arm cradle are arranged sequentially along the moving direction of the slide, and the single-arm cradle is located on one side of the end of the slide.

5. The single-arm five-axis gantry machining center according to claim 2, characterized in that, A slider is provided on the slide table, and a guide rail is provided on the frame; The slider is slidably connected to the guide rail; The slide and the mounting shell are integrally formed.

6. The single-arm five-axis gantry machining center according to claim 2, characterized in that, The mounting housing has a transverse groove; The cradle drive mechanism includes a roller cam assembly and a drive shaft; The drive shaft is rotatably mounted in the transverse groove; The roller cam assembly is mounted on the mounting housing and is connected to the drive shaft. The drive shaft and the single-arm cradle are connected by a drive shaft.

7. The single-arm five-axis gantry machining center according to claim 6, characterized in that, The transverse groove extends through the mounting shell; The transverse groove includes a central groove and outwardly expanding grooves located at both ends of the central groove; A bearing is installed inside the outer expansion groove; The drive shaft passes through the transverse groove, and the bearing is sleeved on the drive shaft.

8. The single-arm five-axis gantry machining center according to claim 7, characterized in that, The mounting housing has longitudinal grooves; The longitudinal groove connects to the transverse groove; The roller cam assembly includes a roller component and a cam component, wherein the roller component is rotatably disposed in the longitudinal groove; The cam element is located in the transverse groove, and the cam element is connected to the drive shaft in a driving connection. The roller component and the cam component are in a transmission engagement.

9. The single-arm five-axis gantry machining center according to claim 1, characterized in that, Including the base; The base has fixing holes; A connecting rod is provided on the frame, and the connecting rod passes through the fixing hole; The frame is supported on the base.

10. The single-arm five-axis gantry machining center according to claim 9, characterized in that, The connecting rod has external threads; The fixing hole passes through the base; The connecting rod passes through the fixing hole, and a limit nut is threadedly connected to the structural section of the connecting rod extending out of the base. A foot cup seat is provided at the bottom end of the connecting rod.

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