Portal frame of movable column type gantry machine tool

Abstract

The utility model discloses a portal frame of a movable column type gantry machine tool, which relates to the technical field of gantry machine tools and particularly comprises a stand column and a cross beam, rollers are uniformly and movably connected to the bottom of the stand column, the cross beam is fixedly connected with the top of the stand column, and a rotating rod is movably connected to the middle of the cross beam. The bottom of the rotating rod is fixedly connected with a rotating beam, the outer ring of the bottom end of the rotating rod is movably sleeved with a vacuum suction cup, the vacuum suction cup is connected with the cross beam through a supporting rod, and the bottom of the vacuum suction cup makes contact with the top of the rotating beam. According to the portal frame of the movable column type portal machine tool, through the arrangement of the stand columns, the portal frame can be driven to move through a moving structure, and the consistency of the two sides of the portal frame in the moving process is guaranteed; through the arrangement of the first servo motor, rotation of the first servo motor can drive the rotating beam to rotate, the deflection angle of the rotating beam is changed, when the portal frame does not move, the moving range of the main shaft is enlarged, and the movable column type gantry machine tool can machine workpieces conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry machine tools, in particular to a gantry frame of a moving column type gantry machine tool. Background Art

[0002] Gantry machine tool is a large CNC (controlled) machine tool, its structure is similar to gantry crane, also known as gantry machining center, mainly suitable for processing large parts. Moving column gantry machine tool is a kind of gantry machine tool, when in use, the workbench is fixed and the gantry is movable. The gantry is one of the main structures of the moving column gantry machine tool. In the prior art, some schemes about the moving column gantry machine tool are disclosed, such as the schemes disclosed in the authorized patent documents with application numbers CN202321490526.3, CN202320619969.1 or CN202320213623.1, etc. The gantry disclosed in the above schemes usually only has the function of supporting the main shaft, and the moving direction of the main shaft is fixed. If the main shaft wants to move in the direction in which the gantry moves, it needs to be driven by the gantry. However, the gantry has a large gravity and is inconvenient to move. Moreover, the moving range of the main shaft in the moving direction of the gantry is limited by the moving range of the gantry, which in turn affects the processing range of the gantry machine tool; and the two columns of the gantry are in a separated state and are driven respectively by the moving structure. Under the influence of factors such as wear, it is difficult for the two columns to always maintain the consistency of movement; based on this, the present application proposes a gantry of a moving column gantry machine tool. Utility Model Content

[0003] The utility model provides a gantry of a moving column type gantry machine tool, which solves the problem that the main shaft moving direction of the gantry machine tool proposed in the above background technology is fixed, and if the main shaft wants to move in the direction in which the gantry moves, it needs to be driven by the gantry, which is inconvenient to use; the moving range of the main shaft in the moving direction of the gantry is limited by the moving range of the gantry, reducing the processing range of the gantry machine tool; and the two columns of the gantry are in a separated state and are driven respectively by a moving structure. Under the influence of factors such as wear, it is difficult for the two columns to always maintain the consistency of movement.

[0004] The utility model provides the following technical solutions: a gantry of a moving column type gantry machine tool, comprising a column and a crossbeam, the bottom of the column is evenly and movably connected with a roller, the crossbeam is fixedly connected to the top of the column, the middle of the crossbeam is movably connected with a rotating rod, the bottom of the rotating rod is fixedly connected with a rotating beam, the outer ring of the bottom end of the rotating rod is movably sleeved with a vacuum suction cup, the vacuum suction cup is connected to the crossbeam through a support rod, the bottom of the vacuum suction cup contacts the top of the rotating beam, a vacuum pump is fixed on the crossbeam, and the vacuum suction cup is connected to the vacuum pump through a vacuum pipe;

[0005] A fixed support block is fixed on the inner side of the top of the column, and support structures are provided on both sides of the top of the column. The support structure includes a fixed plate fixedly connected to the column, a ball screw movably connected to the fixed plate, a threaded block threadedly connected to the ball screw, a hydraulic telescopic rod 1 fixedly connected to the top of the threaded block, and a movable support block fixedly connected to the other end of the hydraulic telescopic rod 1.

[0006] Preferably, the column is a U-shaped structure, the rotating beam is movably connected to the inner cavity of the column, the roller is movably connected to the bottom of the horizontal end of the column, the cross beam is fixedly connected to the top of the vertical end of the column, and a reinforcing rod is fixed to the top of the inner cavity of the column, and the reinforcing rod is in contact with the bottom of the cross beam.

[0007] Preferably, a servo motor 1 is provided on one side of the column, and the rotating rod is driven by the servo motor 1.

[0008] Preferably, the top of the fixed support block, the bottom of the rotating beam and the top of the movable support block are all in the same plane, the fixed support block is located between two movable support blocks, and fixed support blocks are fixed on both sides of the top of the column.

[0009] Preferably, a servo motor 2 is provided on one side of the fixing plate, and an output shaft of the servo motor 2 is connected to the end of the ball screw.

[0010] Preferably, an electric ball valve is provided at one end of the vacuum tube.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The gantry of the moving column type gantry machine tool can drive the gantry to move by using a moving structure through the setting of the columns, so as to ensure the consistency of the movement of the two sides of the gantry; through the setting of the reinforcing rod, the reinforcing rod can support the crossbeam to reduce the probability of deformation of the crossbeam; through the setting of the fixed support block, the vacuum suction cup and the movable support block, the fixed support block or the movable support block can support the rotating beam, and when the vacuum suction cup is connected to the rotating beam under negative pressure, the rotating beam can be lifted and pulled, so as to reduce the probability of deformation of the rotating beam and facilitate the movement of the spindle in the direction where the rotating beam is located.

[0013] 2. The gantry of the moving column gantry machine tool is set with a servo motor. The rotation of the servo motor can drive the rotating beam to rotate and change the deflection angle of the rotating beam. When the gantry does not move, the moving range of the spindle is expanded, which is convenient for the moving column gantry machine tool to process the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the structure of the utility model;

[0015] Figure 2 The utility model structure Figure 1 Back diagram;

[0016] Figure 3 The utility model structure Figure 1 Bottom schematic diagram;

[0017] Figure 4 This is a schematic diagram of the support of the rotating beam by the movable support block of the utility model structure;

[0018] Figure 5 The utility model structure Figure 4 Explosion diagram.

[0019] In the figure: 1. column; 2. crossbeam; 3. rotating beam; 4. fixed support block; 5. servo motor 1; 6. vacuum pump; 7. fixed plate; 8. ball screw; 9. roller; 10. hydraulic telescopic rod 1; 11. vacuum suction cup; 12. movable support block; 13. reinforcing rod; 14. servo motor 2; 15. rotating rod; 16. vacuum tube; 17. threaded block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a gantry of a moving column type gantry machine tool, comprising a column 1 and a crossbeam 2, the column 1 being a U-shaped structure, the bottom of the horizontal end of the column 1 being evenly and movably connected with a roller 9, through the arrangement of the column 1, the gantry can be driven by a moving structure when moving, thereby ensuring the consistency of movement of both sides of the gantry, the moving structure can be a linear guide rail, and through the arrangement of the roller 9, the friction force of the gantry when moving can be reduced, thereby facilitating the movement of the gantry.

[0022] A crossbeam 2 is fixed on the top of the column 1, and the crossbeam 2 is fixedly connected to the top of the vertical end of the column 1. A reinforcing rod 13 is fixed to the top of the inner cavity of the column 1, and the reinforcing rod 13 is in contact with the bottom of the crossbeam 2. Through the setting of the reinforcing rod 13, the reinforcing rod 13 can support the crossbeam 2, reduce the probability of deformation of the crossbeam 2, and facilitate the use of the gantry.

[0023] The middle part of the crossbeam 2 is movably connected with a rotating rod 15, and a servo motor 15 is provided on one side of the column 1. The rotating rod 15 is driven by the servo motor 15, and in some embodiments of the present application, a synchronous wheel 1 is fixed to the end of the output shaft of the servo motor 15 and the top of the rotating rod 15, and the two synchronous wheels 1 are connected through a synchronous belt transmission, and a synchronous wheel 1 is fixed to the end of the output shaft of the servo motor 15 through a reducer. Through the setting of the servo motor 15, the rotation of the servo motor 15 can drive the synchronous wheel 1 fixedly connected thereto to rotate, and the rotating synchronous wheel 1 can drive the rotating rod 15 to rotate through the synchronous belt.

[0024] The bottom of the rotating rod 15 is fixedly connected with the rotating beam 3, and the rotating beam 3 is movably connected to the inner cavity of the column 1. When the rotating rod 15 rotates, the rotating rod 15 can drive the rotating beam 3 fixedly connected thereto to rotate.

[0025] From the above description, it can be seen that when the gantry is in use, the moving direction of the spindle and other components of the moving column gantry machine tool arranged on the rotating beam 3 can be changed, thereby expanding the moving range of the spindle, and the gantry does not need to be moved, and the spindle can move in the moving direction of the gantry, thereby improving the convenience of using the gantry.

[0026] The outer ring at the bottom of the rotating rod 15 is movably sleeved with a vacuum suction cup 11, which is connected to the cross beam 2 through a support rod, and the bottom of the vacuum suction cup 11 contacts the top of the rotating beam 3. A vacuum pump 6 is fixed on the cross beam 2, and the vacuum suction cup 11 is connected to the vacuum pump 6 through a vacuum tube 16, and an electric ball valve is provided at one end of the vacuum tube 16. Through the arrangement of the vacuum pump 6 and the vacuum suction cup 11, the operation of the vacuum pump 6 can make the vacuum suction cup 11 negatively connected to the rotating beam 3, so that the position of the rotating beam 3 is fixed, the stability of the workpiece during processing is improved, and it is convenient for the moving column gantry machine tool to process the workpiece.

[0027] Fixed support blocks 4 are fixed on both sides of the top of the inner cavity of the column 1. The top of the fixed support block 4 is at the same height as the bottom of the rotating beam 3. When the rotating beam 3 and the cross beam 2 are in a parallel state, the fixed support block 4 can support the rotating beam 3 to improve the firmness of the connection between the rotating beam 3 and the rotating rod 15.

[0028] Support structures are provided on both sides of the top of the column 1, and the support structures include a fixed plate 7 fixedly connected to the column 1, a ball screw 8 movably connected to the fixed plate 7, a threaded block 17 threadedly connected to the ball screw 8, a hydraulic telescopic rod 10 fixedly connected to the top of the threaded block 17, and a movable support block 12 fixedly connected to the other end of the hydraulic telescopic rod 10. The bottom of the rotating beam 3 and the top of the movable support block 12 are both in the same plane, the fixed support block 4 is located between the two movable support blocks 12, and a servo motor 2 14 is provided on one side of the fixed plate 7, and the output shaft of the servo motor 2 14 is connected to the end of the ball screw 8. Through the setting of the servo motor 2 14, the rotation of the servo motor 2 14 can drive the ball screw 8 to rotate, and the rotation of the ball screw 8 can make the threaded block 17 threadedly connected thereto move in the direction of the ball screw 8. When the threaded block 17 moves, it can drive the hydraulic telescopic rod 10 to move, and the hydraulic telescopic rod 10 can drive the movable support block 12 fixedly connected thereto to move, and the extension and retraction of the hydraulic telescopic rod 10 can change the position of the movable support block 12, so that the movable support block 12 can support the rotating beam 3.

[0029] In some embodiments of the present application, the end of the ball screw 8 is fixedly connected to a synchronous wheel 2, and the end of the output shaft of the servo motor 2 14 is fixed to another synchronous wheel 2 through a reducer. The two synchronous wheels 2 are connected through a synchronous belt drive. When the servo motor 2 14 rotates, the servo motor 2 14 can drive the ball screw 8 to rotate.

[0030] The electrical components involved in this application are all prior art, and technicians in this field are familiar with their connection methods. Through these technicians, all the electrical components in this application are connected to their compatible power supplies through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in a sequential working order, and the detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation of the electrical control is given.

[0031] In summary: when the gantry of the moving column gantry machine tool is used, the gantry is arranged on the workbench of the moving column gantry machine tool through a moving structure, and the gantry is driven to move by the moving structure, and the moving structure can be a linear guide rail in the prior art. The spindle of the moving column gantry machine tool is arranged on the rotating beam 3. When the moving column gantry machine tool processes the workpiece, the fixed support block 4 or the movable support block 12 supports the rotating beam 3, and the vacuum suction cup 11 is negatively connected to the rotating beam 3 to fix the position of the rotating beam 3, thereby improving the stability of the rotating beam 3 when the spindle processes the workpiece, and when the vacuum suction cup 11 is released from fixing the rotating beam 3, the rotation of the servo motor 15 can drive the rotating beam 3 to rotate, and change the deflection angle of the rotating beam 3, so that when the gantry does not move, the moving range of the spindle is expanded, thereby increasing the processing range of the gantry, and facilitating the moving column gantry machine tool to process the workpiece.

[0032] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gantry of a moving column type gantry machine tool, comprising a column (1) and a crossbeam (2), characterized in that: The bottom of the column (1) is evenly and movably connected with a roller (9), the cross beam (2) is fixedly connected to the top of the column (1), the middle of the cross beam (2) is movably connected with a rotating rod (15), the bottom of the rotating rod (15) is fixedly connected to the rotating beam (3), the outer ring of the bottom end of the rotating rod (15) is movably sleeved with a vacuum suction cup (11), the vacuum suction cup (11) is connected to the cross beam (2) through a support rod, the bottom of the vacuum suction cup (11) is in contact with the top of the rotating beam (3), a vacuum pump (6) is fixed on the cross beam (2), and the vacuum suction cup (11) is connected to the vacuum pump (6) through a vacuum pipe (16); A fixed support block (4) is fixed on the inner side of the top of the column (1), and support structures are provided on both sides of the top of the column (1), wherein the support structure comprises a fixed plate (7) fixedly connected to the column (1), a ball screw (8) movably connected to the fixed plate (7), a threaded block (17) threadedly connected to the ball screw (8), a hydraulic telescopic rod (10) fixedly connected to the top of the threaded block (17), and a movable support block (12) fixedly connected to the other end of the hydraulic telescopic rod (10).

2. The gantry of a moving column gantry machine tool according to claim 1, characterized in that: The column (1) is a U-shaped structure, the rotating beam (3) is movably connected to the inner cavity of the column (1), the roller (9) is movably connected to the bottom of the horizontal end of the column (1), the cross beam (2) is fixedly connected to the top of the vertical end of the column (1), and a reinforcing rod (13) is fixed to the top of the inner cavity of the column (1), and the reinforcing rod (13) is in contact with the bottom of the cross beam (2).

3. The gantry of a moving column gantry machine tool according to claim 1, characterized in that: A servo motor (5) is provided on one side of the column (1), and the rotating rod (15) is driven by the servo motor (5).

4. The gantry of a moving column type gantry machine tool according to claim 2, characterized in that: The top of the fixed support block (4), the bottom of the rotating beam (3) and the top of the movable support block (12) are all in the same plane, the fixed support block (4) is located between the two movable support blocks (12), and fixed support blocks (4) are fixed on both sides of the top of the column (1).

5. The gantry of a moving column gantry machine tool according to claim 1, characterized in that: A servo motor 2 (14) is provided on one side of the fixing plate (7), and an output shaft of the servo motor 2 (14) is connected to the end of the ball screw (8).

6. The gantry of a moving column gantry machine tool according to claim 1, characterized in that: An electric ball valve is provided at one end of the vacuum tube (16).

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