Five-axis machining center

Abstract

The utility model discloses a five-axis machining center. The five-axis machining center comprises a machine tool; the moving table is slidably connected to the machine tool in the front-back direction, a driving motor is connected to the bottom side of the moving table, a transmission shaft is rotationally connected to the bottom side of the moving table, the driving motor can drive the transmission shaft to rotate, and at least two transmission gears are arranged on the transmission shaft in the left-right direction at intervals. Transmission racks are arranged at the positions, directly facing all the transmission gears, of the top side of the machine tool, and the multiple transmission gears are engaged with the multiple transmission racks correspondingly. The rotary table is arranged on the moving table; the machining table is arranged on the top side of the rotary table; the portal frame stretches across the machine tool in the left-right direction and is connected with the machine tool; the translation seat is arranged on the portal frame; according to the numerical control machining center, the phenomenon that stress is uneven when the movable table is driven to move is effectively reduced, the stability of the movable table moving in the front-back direction is greatly improved, and therefore the machining quality of workpieces is improved.

Description

Technical Field

[0001] The utility model relates to a machine tool, in particular to a five-axis machining center. Background Art

[0002] In a five-axis machining center, a traditional machining table is placed along the front-to-back direction. In order to realize the front-to-back movement of the machining table, an electric screw is usually set in the middle of the bottom side of the machining table to provide driving force. However, the machining table placed front and back will cause the overall space to be larger. Therefore, some five-axis machining centers currently place the machining table along the left-to-right direction. At this time, due to the large span of the machining table along the left-to-right direction, the electric screw driven only in the middle of the bottom side of the machining table is prone to jamming and poor stability when driving the worktable to move. Therefore, a five-axis machining center with a more stable machining table movement is urgently needed. Utility Model Content

[0003] The utility model aims to provide a five-axis machining center to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A five-axis machining center comprises: a machine tool; a movable table, which is slidably connected to the machine tool in a front-to-rear direction, a driving motor is connected to the bottom side of the movable table, a transmission shaft is rotatably connected to the bottom side of the movable table, the driving motor can drive the transmission shaft to rotate along a rotation axis in a left-right direction, at least two transmission gears are arranged on the transmission shaft at intervals in the left-right direction, a transmission rack is arranged at a position on the top side of the machine tool facing all the transmission gears, and a plurality of the transmission gears and a plurality of the transmission racks are respectively meshed with each other; a turntable, which is arranged on the movable table, and the turntable can rotate along the rotation axis in the left-right direction; a processing table, which is arranged on the top side of the turntable, and the processing table can rotate along the rotation axis in the up-down direction; a gantry, which spans the machine tool in the left-right direction and is interconnected with the machine tool; a translation seat, which is arranged on the gantry, and the translation seat can move in the left-right direction; a processing head, which is arranged on the translation seat, and the processing head can move in the up-down direction.

[0006] The technical solution has at least the following beneficial effects: a movable table that can move in the front and rear directions is provided on the machine tool, a turntable that can rotate along a rotation axis in the left and right directions is provided on the movable table, a translation seat that can rotate along a rotation axis in the up and down directions is provided on the turntable, and the translation seat on the gantry can also move in the left and right directions, and the processing head can move in the up and down directions. A workpiece to be processed is loaded on the processing table, and the processing head can realize multi-angle processing of the workpiece. For the movement of the processing table, a drive motor on the bottom side of the processing table drives the transmission shaft to move, and the transmission shaft drives at least two transmission gears spaced apart on the left and right to rotate, and the transmission gears on the top side of the machine tool through the transmission gears are meshed with each other, thereby realizing the front and rear movement of the movable table, a transmission gear and a transmission rack that are meshed with each other form a power pair, and a plurality of power pairs are arranged on the bottom side of the movable table along the left and right directions to provide power drive, which effectively reduces the phenomenon of uneven force when driving the movable table to move, greatly improves the stability of the movable table in the front and rear directions, thereby improving the processing quality of the workpiece.

[0007] As a further improvement of the above technical solution, the top side of the machine tool is provided with a limit frame at the positions on the left and right sides of the moving platform, and the two limit frames are provided with a slide groove on the sides facing each other, and the left and right sides of the moving platform are provided with a slider, and the two sliders are respectively connected in the two slide grooves. The left and right sides of the moving platform are connected to each other through the slider and the slide grooves on the two limit frames, so as to realize the forward and backward sliding connection of the moving platform on the machine tool, and the two limit frames are used to limit the left and right sides of the moving platform, which can effectively prevent the moving platform from shaking left and right, better maintain the mutual meshing of the transmission gear and the transmission rack, and further improve the stability of the moving platform during movement.

[0008] As a further improvement of the above technical solution, the bottom sides of the two limit frames are provided with waist-shaped holes extending in the left-right direction, and screws are inserted into the plurality of waist-shaped holes and connected to the machine tool. When the two limit frames are fixed to the machine tool respectively, the positions of the two limit frames can be adjusted along the length direction of the waist-shaped holes, so that the limit frames can better adapt to the width of the moving platform, and after the adjustment is completed, the screws are tightened and fixed, so that the limit frames are fastened to the machine tool.

[0009] As a further improvement of the above technical solution, the two limiting frames are detachably connected to a fixed plate on one side facing each other, and the two slide grooves are respectively formed on the two fixing plates. By disassembling and replacing different fixing plates, the height of the slide groove can be easily adjusted, making the sliding connection between the mobile platform and the limiting frame more compact and stable, and facilitating the adjustment of the meshing of the transmission gear and the transmission rack, thereby ensuring a stable transmission connection between the two.

[0010] As a further improvement of the above technical solution, the top side of the machine tool is provided with an avoidance groove, the avoidance groove extends in the front-back direction, and the drive motor is directly opposite to the avoidance groove. The bottom side of the machine tool is provided with an avoidance groove for avoiding the installation of the drive motor, which can reduce the installation height of the entire mobile platform, reduce the overall volume, and make the overall structure more compact.

[0011] As a further improvement of the above technical solution, the translation seat is connected to the gantry frame in a sliding manner in the left-right direction, the gantry frame is provided with an electric screw, the translation seat is connected to the electric screw, and the electric screw can drive the translation seat to slide in the left-right direction. The electric screw is installed on the gantry frame, and the electric screw provides a driving force in the left-right direction to the translation seat, thereby driving the translation seat to move left and right.

[0012] As a further improvement of the above technical solution, the gantry is provided with first guide rails on both upper and lower sides of the electric screw, the translation seat is provided with first guide grooves at positions facing the two first guide rails, and the two first guide rails are respectively connected with the two first guide grooves. A first guide rail and a first guide groove are connected to each other to form a sliding pair, and two sliding pairs are arranged between the translation seat and the gantry along the vertical direction, further improving the stability of the translation seat in the left and right directions, thereby improving the processing quality of the workpiece.

[0013] As a further improvement of the above technical solution, a slide is connected to the top of the translation seat, a second guide groove extending in the left-right direction is provided on the bottom side of the slide, a second guide rail is provided on the top side of the gantry, and the second guide rail and the second guide groove are connected with each other. The slide forms a sliding connection in the left-right direction with the second guide rail on the top side of the gantry through the second guide groove on the bottom side thereof, and thus cooperates with the sliding connection between the first guide rail and the first guide groove, thereby improving the stability of the translation seat from multiple directions.

[0014] As a further improvement of the above technical solution, the front and rear sides of the bottom of the gantry are provided with support protrusions, which increase the ground contact area of ​​the bottom of the gantry, further lower the center of gravity of the gantry, and improve the support stability of the gantry. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0016] Figure 1 It is an overall front view of the utility model.

[0017] Figure 2 It is an overall side view of the utility model.

[0018] In the accompanying drawings: 1-machine tool, 11-limit frame, 12-fixed plate, 13-avoidance groove, 2-moving table, 21-drive motor, 22-transmission shaft, 23-transmission gear, 24-transmission rack, 25-slider, 3-turntable, 4-processing table, 5-gantry, 51-electric screw, 52-first guide rail, 53-second guide rail, 54-support protrusion, 6-translation seat, 61-slide seat, 7-processing head. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connecting accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0020] Reference Figure 1 and Figure 2 , a five-axis machining center, comprising:

[0021] Machine tool 1;

[0022] A movable platform 2 is slidably connected to the machine tool 1 along the front-rear direction, a driving motor 21 is connected to the bottom side of the movable platform 2, a transmission shaft 22 is rotatably connected to the bottom side of the movable platform 2, the driving motor 21 can drive the transmission shaft 22 to rotate along the rotation axis in the left-right direction, at least two transmission gears 23 are arranged on the transmission shaft 22 at intervals along the left-right direction, and a transmission rack 24 is arranged at the top side of the machine tool 1 facing all the transmission gears 23. For example, when the number of transmission gears 23 on the transmission shaft 22 is two, the number of transmission racks 24 on the top side of the machine tool 1 is also two, and the two transmission gears 23 are respectively meshed with the two transmission racks 24;

[0023] A turntable 3 is rotatably connected to the mobile platform 2. The mobile platform 2 is also provided with a reduction motor, which is transmission-connected to the turntable 3, so that the turntable 3 can rotate along a rotation axis in a left-right direction;

[0024] The processing table 4 is rotatably connected to the top side of the turntable 3. The turntable 3 is also provided with a reduction motor. At this time, the reduction motor is transmission-connected to the processing table 4, so that the processing table 4 can rotate along the rotation axis in the up-down direction;

[0025] A gantry 5, which spans the machine tool 1 in the left-right direction and is connected to the machine tool 1;

[0026] A translation seat 6, which is arranged on the gantry 5, and the translation seat 6 can move in the left and right directions;

[0027] The processing head 7 is slidably connected to the translation seat 6 in the up-down direction. A lifting screw is provided on the translation seat 6. The processing head 7 is connected to the lifting screw, and the processing head 7 is driven by the lifting screw to move in the up-down direction.

[0028] In this five-axis machining center, a movable table 2 that can move in the front-back direction is provided on the machine tool 1, a turntable 3 that can rotate along the left-right rotation axis is provided on the movable table 2, and a translation seat 6 that can rotate along the up-down rotation axis is provided on the turntable 3, and the translation seat 6 on the gantry 5 can also move in the left-right direction, and the processing head 7 can move in the up-down direction. The workpiece to be processed is loaded on the processing table 4, and the processing head 7 can realize multi-angle processing of the workpiece. For the movement of the processing table 4, the drive motor 21 at the bottom of the processing table 4 drives the transmission shaft 22 to move The transmission shaft 22 drives at least two transmission gears 23 spaced apart from each other to rotate, and the transmission gears 23 on the top side of the machine tool 1 are meshed with each other through the transmission gears 23, thereby realizing the forward and backward movement of the movable platform 2. A transmission gear 23 and a transmission rack 24 meshed with each other form a power pair. A plurality of power pairs are arranged along the left and right directions on the bottom side of the movable platform 2 to provide power drive, which effectively reduces the uneven force phenomenon when driving the movable platform 2 to move, greatly improves the stability of the movable platform 2 along the forward and backward directions, thereby improving the processing quality of the workpiece.

[0029] As for the sliding connection between the mobile platform 2 and the machine tool 1, in this embodiment, the top side of the machine tool 1 is provided with a limit frame 11 at the left and right sides of the mobile platform 2, and the two limit frames 11 are provided with a slide groove on the side facing each other, and the left and right sides of the mobile platform 2 are provided with a slider 25, and the two sliders 25 are respectively connected in the two slide grooves. The left and right sides of the mobile platform 2 are connected to each other through the slider 25 and the slide grooves on the two limit frames 11, so as to realize the forward and backward sliding connection of the mobile platform 2 on the machine tool 1, and the two limit frames 11 are used to limit the left and right sides of the mobile platform 2, which can effectively prevent the mobile platform 2 from shaking left and right, better maintain the mutual meshing of the transmission gear 23 and the transmission rack 24, and further improve the stability of the mobile platform 2 during movement.

[0030] In order to facilitate the adjustment of the left and right positions of the limiting frames 11 on the machine tool 1, in this embodiment, waist-shaped holes extending in the left and right directions are provided on the bottom sides of the two limiting frames 11, and screws are inserted into the waist-shaped holes and connected to the machine tool 1. When the two limiting frames 11 are fixed to the machine tool 1, the positions of the two limiting frames 11 can be adjusted along the length direction of the waist-shaped holes, so that the limiting frames 11 can better adapt to the width of the moving platform 2. After the adjustment is completed, the screws are tightened and fixed, so that the limiting frames 11 are fastened to the machine tool 1.

[0031] Since the moving seat is slidably connected to the limiting frame 11, the limiting frame 11 can provide an upward supporting force for the moving seat. When the limiting frame 11 lifts the moving seat too high, the transmission gear 23 and the transmission rack 24 will be released from mutual meshing. In order to ensure the transmission stability between the transmission gear 23 and the transmission rack 24, the limiting frame 11 needs to provide appropriate support for the moving seat. In this embodiment, the two sides of the two limiting frames 11 facing each other can be detachably connected with a fixed plate 12, and the two slide grooves are respectively formed on the two fixed plates 12. By disassembling and replacing different fixed plates 12, the height of the slide groove can be easily adjusted, so that the sliding connection between the moving platform 2 and the limiting frame 11 is more compact and stable, and it is conducive to adjusting the meshing of the transmission gear 23 and the transmission rack 24, ensuring a stable transmission connection between the two.

[0032] In some embodiments, the top side of the machine tool 1 is provided with an avoidance groove 13, the avoidance groove 13 extends in the front-back direction, and the drive motor 21 is directly opposite to the avoidance groove 13. The bottom side of the machine tool 1 is provided with an avoidance groove 13 for avoiding the installation of the drive motor 21, so that the installation height of the entire moving platform 2 can be reduced, the overall volume can be reduced, and the overall structure can be more compact.

[0033] Regarding the sliding connection structure of the translation seat 6 on the gantry 5, in this embodiment, the translation seat 6 is connected to the gantry 5 in a sliding manner in the left-right direction, and the gantry 5 is provided with an electric screw 51, and the translation seat 6 is connected to the electric screw 51, and the electric screw 51 can drive the translation seat 6 to slide in the left-right direction. The electric screw 51 is installed on the gantry 5, and the electric screw 51 provides a driving force in the left-right direction to the translation seat 6, thereby driving the translation seat 6 to move left and right.

[0034] Furthermore, the gantry 5 is provided with first guide rails 52 on both upper and lower sides of the electric screw rod 51, and the translation seat 6 is provided with first guide grooves at positions facing the two first guide rails 52, and the two first guide rails 52 are respectively connected with the two first guide grooves. One first guide rail 52 is connected with one first guide groove to form a sliding pair, and two sliding pairs are provided between the translation seat 6 and the gantry 5 at intervals in the vertical direction, which further improves the stability of the translation seat 6 in the left-right direction, thereby improving the processing quality of the workpiece.

[0035] Furthermore, a slide 61 is connected to the top of the translation seat 6, and a second guide groove extending in the left-right direction is provided on the bottom side of the slide 61. A second guide rail 53 is provided on the top side of the gantry 5, and the second guide rail 53 and the second guide groove are connected with each other. The slide 61 forms a sliding connection in the left-right direction with the second guide rail 53 on the top side of the gantry 5 through the second guide groove on the bottom side thereof, and thus cooperates with the sliding connection between the first guide rail 52 and the first guide groove, thereby improving the stability of the sliding of the translation seat 6 from multiple directions.

[0036] In some embodiments, the front and rear sides of the bottom of the gantry 5 are both provided with support protrusions 54. The support protrusions 54 increase the ground contact area of ​​the bottom of the gantry 5, further lower the center of gravity of the gantry 5, and improve the support stability of the gantry 5.

[0037] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A five-axis machining center, characterized in that: include: Machine tools (1); A movable platform (2) is slidably connected to the machine tool (1) in the front-rear direction, a driving motor (21) is connected to the bottom side of the movable platform (2), a transmission shaft (22) is rotatably connected to the bottom side of the movable platform (2), the driving motor (21) can drive the transmission shaft (22) to rotate along a rotation axis in the left-right direction, at least two transmission gears (23) are arranged on the transmission shaft (22) at intervals in the left-right direction, a transmission rack (24) is arranged at the top side of the machine tool (1) facing all the transmission gears (23), and a plurality of the transmission gears (23) and a plurality of the transmission racks (24) are respectively meshed with each other; A turntable (3), which is arranged on the moving platform (2), and the turntable (3) can rotate along a rotation axis in a left-right direction; A processing table (4), which is arranged on the top side of the turntable (3), and the processing table (4) can rotate along a rotation axis in the up-down direction; A gantry (5) spanning the machine tool (1) in the left-right direction and connected to the machine tool (1); A translation seat (6) is arranged on the gantry (5), and the translation seat (6) can move in the left and right directions; A processing head (7) is arranged on the translation seat (6), and the processing head (7) can move in the up and down directions.

2. A five-axis machining center according to claim 1, characterized in that: The top side of the machine tool (1) is provided with a limit frame (11) at positions on the left and right sides of the movable platform (2), and the two limit frames (11) are provided with a slide groove on the sides facing each other. The left and right sides of the movable platform (2) are provided with a slider (25), and the two sliders (25) are respectively connected in the two slide grooves.

3. A five-axis machining center according to claim 2, characterized in that: The bottom sides of the two limiting frames (11) are each provided with a waist-shaped hole extending in the left-right direction, and screws are respectively inserted into the plurality of waist-shaped holes and connected to the machine tool (1).

4. A five-axis machining center according to claim 2, characterized in that: One side of the two limiting frames (11) facing each other is detachably connected to a fixing plate (12), and the two sliding grooves are respectively formed on the two fixing plates (12).

5. The five-axis machining center according to claim 1, characterized in that: The top side of the machine tool (1) is provided with an avoidance groove (13), the avoidance groove (13) extends in the front-rear direction, and the drive motor (21) is directly opposite to the avoidance groove (13).

6. A five-axis machining center according to claim 1, characterized in that: The translation seat (6) is connected to the gantry (5) in a sliding manner in the left-right direction. The gantry (5) is provided with an electric screw rod (51). The translation seat (6) is connected to the electric screw rod (51). The electric screw rod (51) can drive the translation seat (6) to slide in the left-right direction.

7. A five-axis machining center according to claim 6, characterized in that: The gantry (5) is provided with first guide rails (52) at both upper and lower sides of the electric screw rod (51), and the translation seat (6) is provided with first guide grooves at positions facing the two first guide rails (52), and the two first guide rails (52) are respectively connected to the two first guide grooves in cooperation with each other.

8. A five-axis machining center according to claim 6, characterized in that: The top of the translation seat (6) is connected to a slide seat (61), the bottom side of the slide seat (61) is provided with a second guide groove extending in the left-right direction, the top side of the gantry (5) is provided with a second guide rail (53), and the second guide rail (53) and the second guide groove are mutually matched and connected.

9. The five-axis machining center according to claim 1, characterized in that: Support protrusions (54) are provided on both the front and rear sides of the bottom of the gantry (5).

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