Machining center

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a machining center which comprises a base, a portal frame, a workbench, a movable frame, a lifting mechanism, a mounting frame, an overturning plate, a rotary driving piece and a plurality of sets of cutting main shafts. The gantry frame is arranged on the base, and the workbench is arranged on the base and located on the bottom side of the gantry frame. The cross beam is provided with a driving mechanism for driving the movable frame to translate; the lifting mechanism is arranged on the moving frame, the mounting frame is arranged at the bottom end of the lifting mechanism, the mounting frame is provided with two mounting plates extending downwards, the turnover plate is rotationally connected between the two mounting plates, and the rotary driving part is arranged on one side of one mounting plate, is connected with the turnover plate and is used for driving the turnover plate to rotate; the multiple sets of cutting main shafts are arranged on one side of the overturning plate. The machining center is provided with multiple sets of cutting spindles, different positions of workpieces can be machined at the same time, and production efficiency is improved; the top face and the side face of the workpiece are cut in cooperation with the driving mechanism, the lifting mechanism, the rotary driving piece and the overturning plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing, in particular to a processing center. Background Art

[0002] Machining center generally refers to CNC milling machine, which is an automatic processing equipment developed on the basis of general milling machine. The processing technology of the two is basically the same, and the structure is somewhat similar. CNC milling machine generally includes bed part, milling head part, worktable part, horizontal feed part and lifting platform part. One clamping can complete most of the cutting processing of the workpiece and ensure the processing accuracy of the workpiece.

[0003] For example, the Chinese patent document with publication number CN207736450U discloses a woodworking processing center, including a machine, a workbench slidably arranged on the machine, a limit device fixed on the workbench, a displacement device slidably arranged on one side of the machine, and a CNC cutting device slidably arranged on the displacement device for cutting wooden workpieces to be processed, a cutter head is installed at the center of the CNC cutting device, a pair of connecting rods are extended toward the workbench on the peripheral wall of the CNC cutting device, a roller brush is detachably connected between the connecting rods, and a collecting groove is circumferentially opened on the side wall of the workbench to complete the cutting of the workpiece.

[0004] In the technical solution of the above patent document, a displacement device is slidably provided with a CNC cutting device, a cutter head is installed at the center of the CNC cutting device, and the displacement device is slidably provided on a machine table. The cutter head of the CNC cutting device can only complete the cutting process of a single workpiece during processing, and the processing efficiency is relatively low. Utility Model Content

[0005] The utility model aims to provide a machining center to solve the problem of low machining efficiency of the existing woodworking machining center which has only one cutting device.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a machining center, including a base, a gantry, a worktable, a movable frame, a lifting mechanism, a mounting frame, a flip plate, a rotating drive member and multiple groups of cutting spindles; the gantry is mounted on the base, the worktable is arranged on the base and is located on the bottom side of the gantry; the movable frame is mounted on the crossbeam of the gantry, and the crossbeam is provided with a driving mechanism for driving the movable frame to translate; the lifting mechanism is arranged on the movable frame, the mounting frame is arranged at the bottom end of the lifting mechanism, the mounting frame is provided with two mounting plates extending downward, the flip plate is rotatably connected between the two mounting plates, the rotating drive member is arranged on one side of the mounting plate, and is connected to the flip plate, for driving the flip plate to rotate; multiple groups of cutting spindles are arranged on one side of the flip plate.

[0007] Furthermore, each of the cutting spindles is arranged on the same side of the flip plate, and when the spindle head of the cutting spindle faces downward, each of the cutting spindles is located at the front side of the flip plate.

[0008] Furthermore, the cutting spindle includes a rotating mechanism and a spindle, the rotating mechanism is arranged on the flip plate, the spindle is arranged at the rotating end of the rotating mechanism, and the rotating mechanism is used to drive the spindle to rotate.

[0009] Furthermore, an installation cavity is provided in the flip plate, and the rotating mechanism is arranged in the installation cavity; the rotating mechanism includes a harmonic reducer, a rotating seat and a first motor, the harmonic reducer and the first motor are arranged in the installation cavity, and the rotating seat is arranged at one end of the harmonic reducer; the main shaft is arranged on one side of the rotation.

[0010] Furthermore, it also includes a tool magazine, which is arranged on the bottom side of the beam.

[0011] Furthermore, the tool magazine includes a base plate, a push member and multiple sets of tool clamps; the base plate is slidably connected to the bottom side of the beam, the push member connects the beam and the base plate, and multiple sets of tool clamps are arranged on one side of the base plate, and the tool clamps are used to clamp the tool.

[0012] Furthermore, the knife clamp comprises a clamping plate, and the clamping plate is provided with a clamping opening opening upward; two elastic clamping arms are formed on both sides of the clamping opening, and the elastic clamping arms are provided with limiting portions, and the limiting portions extend toward the inner side of the clamping opening.

[0013] Furthermore, an open groove is provided on the inner side of the clamp arm, and the open groove forms an elastic arm on the inner side of the clamp arm.

[0014] Furthermore, the lifting mechanism includes an electric screw mechanism, and the lifting mechanism also includes two counterweight cylinders, and the counterweight cylinders are connected to the moving frame and the mounting frame.

[0015] Furthermore, the driving mechanism includes a rack, a guide rail, a second motor and a gear; the rack is arranged on the top side of the beam, the guide rail is arranged on the front side of the beam, and the movable frame is slidably connected to the guide rail; a motor seat is provided on the back side of the movable frame, the second motor is arranged on the motor seat, the gear is arranged on the main shaft of the second motor, and the gear is meshed with the rack; the gear is a helical gear, and the rack is a helical rack.

[0016] The above one or more technical solutions in the machining center provided by the embodiment of the utility model have at least the following technical effects:

[0017] Because the machining center is equipped with multiple cutting spindles, different positions of the workpiece can be processed at the same time, and multiple identical workpieces can be processed at the same time, which improves production efficiency. The rotating drive member rotates the flip plate to switch the cutting spindle to vertical or horizontal at any time, so that the cutting spindle can process the top and side surfaces of the workpiece; in conjunction with the driving mechanism and the lifting mechanism, the cutting spindle can be driven to move in the horizontal and vertical directions to expand the processing range of the cutting spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A three-dimensional diagram of a machining center provided in an embodiment of the utility model.

[0020] Figure 2 This is a front view of a machining center provided by an embodiment of the utility model.

[0021] Figure 3 Another stereoscopic view of the machining center provided by the embodiment of the utility model.

[0022] Figure 4 A partial structural diagram of the turning plate and cutting spindle of a machining center provided in an embodiment of the utility model.

[0023] Figure 5 A structural diagram of a tool magazine for a machining center provided in an embodiment of the utility model.

[0024] Figure 6 A structural diagram of a tool holder for a machining center provided in an embodiment of the utility model.

[0025] In the figure, 100, base, 200, gantry, 210, beam, 300, workbench, 400, mobile frame, 410, drive mechanism, 411, rack, 412, guide rail, 413, second motor, 414, gear, 415, motor seat, 500, lifting mechanism, 510, electric screw mechanism, 520, counterweight cylinder, 600, mounting frame, 610, mounting plate, 700, flip plate, 710, installation Cavity, 720, rotating drive member, 800, cutting spindle, 810, rotating mechanism, 811, harmonic reducer, 812, rotating seat, 813, first motor, 820, spindle, 900, tool magazine, 910, base plate, 920, push member, 930, tool clamp, 931, clamp, 932, clamping mouth, 933, elastic clamping arm, 934, limiting part, 935, opening groove, 936, elastic arm, 940, tool. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] In one embodiment of the machining center of the utility model, please refer to Figure 1 to Figure 6 The machining center includes a base 100, a gantry 200, a worktable 300, a mobile frame 400, a lifting mechanism 500, a mounting frame 600, a flip plate 700, a rotary drive member 720 and a plurality of cutting spindles 800. The gantry 200 is arranged on the base 100, the worktable 300 is arranged on the base 100 and is located at the bottom side of the gantry 200; the mobile frame 400 is arranged on the crossbeam 210 of the gantry, and the crossbeam 210 is provided with a drive mechanism 410 for driving the mobile frame 400 to translate. The lifting mechanism 500 is arranged on the mobile frame 400, the mounting frame 600 is arranged at the bottom end of the lifting mechanism 500, the mounting frame 600 is provided with two mounting plates 610 extending downward, the flip plate 700 is rotatably connected between the two mounting plates 610, and the rotary drive member 720 is arranged on one side of a mounting plate 610 and connected to the flip plate 700, and is used to drive the flip plate 700 to rotate. Multiple groups of cutting spindles 800 are arranged on one side of the flip plate 700. Specifically, since the machining center is provided with multiple groups of cutting spindles 800, multiple different workpieces can be processed at the same time, and different positions of the workpieces can also be processed at the same time, thereby improving production efficiency. The rotary drive member 720 rotates the flip plate 700 to switch the cutting spindle 800 to a vertical or horizontal position at any time, so that the cutting spindle 800 can process the top and side surfaces of the workpiece; cooperate with the driving mechanism 410 and the lifting mechanism 500 to drive the cutting spindle 800 to move in the horizontal and vertical directions to expand the processing range of the cutting spindle. Preferably, the workbench 300 can be a mobile workbench, and the gantry 200 can be fixed, so there is no need for the gantry 200 to move. In addition, the workbench 300 can be two or more groups, so workpieces can be set on different workbenches 300 to further expand the processing range and improve production efficiency.

[0031] Furthermore, each cutting spindle 800 is arranged on the same side of the flip plate 700, and when the spindle head of the cutting spindle 800 is facing downward, each cutting spindle 800 is located in front of the flip plate 700. Specifically, each cutting spindle 800 is arranged on the same side of the flip plate 700, and the processing stroke of the cutting spindle 800 can be uniformly controlled; when the spindle head of the cutting spindle 800 is facing downward, each cutting spindle 800 is located in front of the flip plate 700, so when the rotary drive member 720 drives the flip plate 700 to rotate so that the spindle head of the cutting spindle 800 is horizontal, the cutting spindle 800 is located at the top of the flip plate 700, so that the flip plate 700 can better carry the cutting spindle 800, thereby further ensuring the processing accuracy. In addition, when the cutting spindle 800 cuts the workpiece, it is also convenient for the staff to observe the dynamics of the cutting spindle 800.

[0032] Furthermore, the cutting spindle 800 includes a rotating mechanism 810 and a spindle 820. The rotating mechanism 810 is disposed on the flip plate 700, and the spindle 820 is disposed at the rotating end of the rotating mechanism 810. The rotating mechanism 810 is used to drive the spindle 820 to rotate. Specifically, the rotating mechanism 810 drives the spindle 820 to rotate on one side of the flip plate 700, so that the spindle 820 can adapt to cutting at various angles. In conjunction with the driving mechanism 410 and the lifting mechanism 500, the cutting spindle 800 can cut and process the top and side surfaces of the workpiece in all directions.

[0033] Furthermore, a mounting cavity 710 is provided in the flip plate 700, and a rotating mechanism 810 is provided in the mounting cavity 710; the rotating mechanism 810 includes a harmonic reducer 811, a rotating seat 812 and a first motor 813, the harmonic reducer 811 and the first motor 813 are provided in the mounting cavity 710, and the rotating seat 812 is provided at one end of the harmonic reducer 811; the spindle 820 is provided on the rotating side. Specifically, the rotating mechanism 810 is provided in the mounting cavity 710 of the flip plate, which can block dust and debris; the harmonic reducer 811 is used to increase the torque and reduce the rotation speed, so as to facilitate the adjustment of the cutting force of the spindle 820.

[0034] Furthermore, the machining center of this embodiment further includes a tool magazine 900, which is arranged at the bottom side of the beam 210. Specifically, the tool magazine 900 can realize online replacement of the tool of the cutting spindle 800 in the machining center, meet different machining requirements, save downtime time for manual replacement, and improve production efficiency.

[0035] Further, the tool magazine 900 includes a bottom plate 910, a push piece 920 and a plurality of tool holders 930; the bottom plate 910 is slidably connected to the bottom side of the crossbeam 210, the push piece 920 connects the crossbeam 210 and the bottom plate 910, and the plurality of tool holders 930 are arranged on one side of the bottom plate 910, and the tool holders 930 are used to clamp the tool 940. Specifically, the push piece 920 can drive the bottom plate 910 to move forward and backward. When the rotary drive member 720 drives the flip plate 700 to rotate so that the spindle 820 of the cutting spindle faces the tool holder 930, the push piece 920 drives the bottom plate 910 to approach the spindle, and the lifting mechanism 500 moves the mounting frame 600 up and down to make the cutting spindle 800 release the tool and place it in the tool holder 930 of the tool magazine, and then the driving mechanism 410 moves the moving frame 400 so that the cutting spindle 800 clamps the tool 940 of the tool magazine, and the replacement of the cutting tool is completed.

[0036] Furthermore, the tool holder 930 includes a clamping plate 931, and the clamping plate 931 is provided with a clamping opening 932 with an opening facing upward; two elastic clamping arms 933 are formed on both sides of the clamping opening 932, and the elastic clamping arms 933 are provided with a limiting portion 934, and the limiting portion 934 extends to the inner side of the clamping opening 932. Specifically, the elastic clamping arms 933 and the limiting portion 934 are provided, so that the tool can be clamped and limited at the clamping opening 932 to prevent the tool from shaking and falling. In addition, the clamping opening 932 of the clamping plate 931 faces upward, and when the tool is placed on the clamping plate 931, and during the tool changing process, the problem of the tool falling can be avoided.

[0037] Furthermore, an opening slot 935 is provided on the inner side of the clamp arm 933, and the opening slot 935 forms an elastic arm 936 on the inner side of the clamp arm. Specifically, the opening slot 935 is provided to form the elastic arm 936 on the inner side of the clamp arm, and when the tool is pressed from the limiting portion 934 toward the clamping opening, the elastic arm 936 opens toward the two sides of the clamp arm and fixes the tool, and the opening slot 935 further limits and stabilizes the tool; when the cutting spindle 800 needs to remove the tool, a large upward driving force needs to be applied to the tool, which further ensures the stability of the tool 940.

[0038] Further, the lifting mechanism 500 includes an electric screw mechanism 510, and the lifting mechanism 500 also includes two counterweight cylinders 520, and the counterweight cylinders 520 are connected to the moving frame 400 and the mounting frame 600. Specifically, the lifting mechanism 500 is provided with the counterweight cylinder 520, which can provide an auxiliary thrust when the electric screw mechanism 510 drives the mounting frame 600 upward, reduce the force on the screw, and reduce the wear of the electric screw mechanism 510 during the driving process.

[0039] Further, the driving mechanism 410 includes a rack 411, a guide rail 412, a second motor 413 and a gear 414; the rack 411 is arranged on the top side of the beam 210, the guide rail 412 is arranged on the front side of the beam 210, and the mobile frame 400 is slidably connected to the guide rail 412; a motor seat 415 is arranged on the back side of the mobile frame 400, the second motor 413 is arranged on the motor seat 415, the gear 414 is arranged on the main shaft of the second motor 413, and the gear 414 is meshed with the rack 411; the gear 414 is a helical gear, and the rack 411 is a helical rack. Specifically, the gear 414 is meshed with the rack 411, the gear 414 is arranged on the main shaft of the second motor 413, and the motor seat 415 of the second motor is arranged on the back side of the mobile frame 400, so that when the second motor 413 can drive the gear 414 to move left and right on the rack 411. Since the gear 414 is a helical gear and the rack 411 is a helical rack, the gear 414 can provide an upward supporting force for the moving frame 400 during the moving process, thereby preventing the moving frame 400 from tilting during the moving process.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A machining center, characterized in that: It includes a base, a gantry, a workbench, a mobile frame, a lifting mechanism, a mounting frame, a flip plate, a rotating drive member and multiple groups of cutting spindles; the gantry is mounted on the base, the workbench is mounted on the base and is located at the bottom side of the gantry; the mobile frame is mounted on the crossbeam of the gantry, and the crossbeam is provided with a driving mechanism for driving the mobile frame to translate; the lifting mechanism is arranged on the mobile frame, the mounting frame is arranged at the bottom end of the lifting mechanism, the mounting frame is provided with two mounting plates extending downward, the flip plate is rotatably connected between the two mounting plates, the rotating drive member is arranged on one side of the mounting plate and is connected to the flip plate to drive the flip plate to rotate; multiple groups of cutting spindles are arranged on one side of the flip plate.

2. The machining center according to claim 1, characterized in that: Each of the cutting spindles is arranged on the same side of the flip plate. When the spindle heads of the cutting spindles face downward, each of the cutting spindles is located at the front side of the flip plate.

3. The machining center according to claim 1 or 2, characterized in that: The cutting spindle comprises a rotating mechanism and a spindle. The rotating mechanism is arranged on the flip plate, and the spindle is arranged at the rotating end of the rotating mechanism. The rotating mechanism is used to drive the spindle to rotate.

4. The machining center according to claim 3, characterized in that: An installation cavity is provided in the flip plate, and the rotating mechanism is arranged in the installation cavity; the rotating mechanism includes a harmonic reducer, a rotating seat and a first motor, the harmonic reducer and the first motor are arranged in the installation cavity, and the rotating seat is arranged at one end of the harmonic reducer; the main shaft is arranged on one side of the rotation.

5. The machining center according to claim 1 or 2, characterized in that: It also includes a tool magazine, which is arranged on the bottom side of the crossbeam.

6. The machining center according to claim 5, characterized in that: The tool magazine includes a base plate, a push piece and multiple sets of tool clamps; the base plate is slidably connected to the bottom side of the beam, the push piece connects the beam and the base plate, and multiple sets of tool clamps are arranged on one side of the base plate, and the tool clamps are used to clamp tools.

7. The machining center according to claim 6, characterized in that: The knife clamp comprises a clamping plate, and the clamping plate is provided with a clamping opening with an opening facing upward; two elastic clamping arms are formed on both sides of the clamping opening, and the elastic clamping arms are provided with a limiting portion, and the limiting portion extends toward the inner side of the clamping opening.

8. The machining center according to claim 7, characterized in that: An open slot is also provided on the inner side of the clamp arm, and the open slot forms an elastic arm on the inner side of the clamp arm.

9. The machining center according to claim 1, characterized in that: The lifting mechanism includes an electric screw mechanism, and the lifting mechanism also includes two counterweight cylinders, and the counterweight cylinders are connected to the moving frame and the mounting frame.

10. The machining center according to claim 1, characterized in that: The driving mechanism includes a rack, a guide rail, a second motor and a gear; the rack is arranged on the top side of the beam, the guide rail is arranged on the front side of the beam, and the movable frame is slidably connected to the guide rail; a motor seat is arranged on the back side of the movable frame, the second motor is arranged on the motor seat, the gear is arranged on the main shaft of the second motor, and the gear is meshed with the rack; the gear is a helical gear, and the rack is a helical rack.

Images