A gantry-type five-axis vertical machining center with a vertical and horizontal 90° indexing table

Abstract

The present invention discloses a portal-type five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable, the machining center comprises a first Y-axis guide rail, a second Y-axis guide rail and a third Y-axis guide rail arranged on the bed; the plane height where the third Y-axis guide rail is located is higher than the plane height where the first Y-axis guide rail and the second Y-axis guide rail are located; the Y-axis vertical and horizontal 90° indexing worktable is installed sideways on the bed, protective pull plates are provided on both sides of the bed, a chip removal channel is provided between the worktable base and the protective pull plate on one side of the first Y-axis guide rail on the bed, the machining center has the remarkable feature of five-sided machining of a five-axis machining center machine tool, and has the advantages of convenient installation and disassembly of workpieces and convenient chip removal.

Description

Technical Field

[0001] The invention relates to the field of numerically controlled machine tools, and in particular to a portal-type five-axis vertical machining center equipped with a vertical or horizontal 90-degree indexing worktable. Background Art

[0002] Vertical five-axis machining centers can be mainly divided into double-swing head vertical five-axis machining centers with two rotating axes at the spindle end and single-swing head with a rotary table structure with a rotating axis arranged at the spindle end and the worktable end. In order to meet the cutting workpiece's requirements for large cutting force and large torque, the structural dimensions of the swing head are generally designed to be relatively large and the structure is relatively complex, resulting in long overhangs of the swing head and spindle and poor rigidity. It is generally widely used on larger gantry machine tools.

[0003] For small vertical machining centers, most of them use a cradle structure to realize five-axis series products. The existing CNC center with a cradle structure requires two cradle support seats, which are fixed with a drive motor. The workbench is set between the two cradle support seats, and the workbench is driven to rotate by the drive motor. The existing CNC machine tools have the following problems: 1. Since the two cradle support seats are respectively arranged on both sides of the bed, and the workbench is arranged between the two cradle support seats, the cradle support seats cause a certain obstruction to the workbench, making it inconvenient to install and remove the parts to be processed on the workbench, and at the same time, it is inconvenient to observe the processing progress; 2. Since the cradle support seat and the workbench span across the bed, it is not convenient to remove chips. Summary of the invention

[0004] In view of the above problems, the present invention proposes a gantry five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable, which solves the problem that when the existing machining center adopts a cradle structure, the cradle support seat obstructs the worktable and makes it inconvenient to install and disassemble the workpiece. At the same time, it solves the problem of inconvenience in chip removal.

[0005] The technical means adopted by the present invention are as follows:

[0006] A gantry-type five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable, comprising a bed, a column, an X-axis guide rail, an X-axis lead screw, an X-axis saddle, an electric cabinet unit, a Y-axis guide rail, a Y-axis vertical and horizontal 90° indexing worktable, a Y-axis lead screw, a Z-axis guide rail, a Z-axis slide block, a Z-axis ram spindle box, a tool magazine, and a tool changing manipulator;

[0007] The bed is arranged horizontally, the column is arranged at one end of the bed, the X-axis guide rail is arranged on the column, the X-axis saddle is arranged on the X-axis guide rail, the Z-axis slider is arranged on the X-axis saddle, the Z-axis slider is arranged on the Z-axis ram spindle box, the Z-axis ram spindle box is connected with the Z-axis slider through the Z-axis guide rail, and the tool magazine and the tool changing manipulator are installed on the column;

[0008] The Y-axis guide rail comprises a first Y-axis guide rail, a second Y-axis guide rail and a third Y-axis guide rail;

[0009] The first Y-axis guide rail, the second Y-axis guide rail and the third Y-axis guide rail are arranged on the bed, the third Y-axis guide rail is arranged on one side of the bed, and the plane height of the third Y-axis guide rail is higher than the plane height of the first Y-axis guide rail and the second Y-axis guide rail;

[0010] The Y-axis vertical and horizontal 90° indexing worktable is installed on the Y-axis guide rail, and the Y-axis vertical and horizontal 90° indexing worktable includes a worktable slide, a rotating base and a rotating worktable. The worktable slide is provided with a mounting surface, and the mounting surface is inclined downward from the side of the bed body provided with the third Y-axis guide rail to the side provided with the first Y-axis guide rail. The mounting surface is parallel to the Y-axis direction of the machine tool, and the rotating base is installed on the mounting surface;

[0011] The bed is provided with protective pull plates on both sides, and a chip removal channel is provided between the worktable slide and the protective pull plate on one side of the bed provided with the first Y-axis guide rail;

[0012] Furthermore, two chip removal inner protection plates are also provided on the worktable slide. In the Y-axis direction of the machine tool, the two chip removal inner protection plates are respectively arranged on both sides of the worktable slide, and the chip removal inner protection plates are inclined downward from the side of the bed body where the third Y-axis guide rail is provided to the side of the first Y-axis guide rail;

[0013] Further, the column includes a crossbeam, a first support column, a second support column and an oblique support column, the first support column and the second support column are installed at one end of the bed, the oblique support column is installed at the upper end of the first support column, the upper ends of the oblique support column and the second support column are installed with the crossbeam, the X-axis guide rail is installed on the crossbeam, and the tool magazine is installed on the oblique support column;

[0014] Furthermore, the mounting surface is at an angle of 45° to the upper surface of the bed, a first torque motor is mounted on the worktable slide, the first torque motor is connected to the rotating base, the axis of the first torque motor is perpendicular to the mounting surface, the axis of the first torque motor forms the B-axis of the vertical and horizontal 90° indexing worktable, and a second torque motor is also provided on the rotating base, the second torque motor can drive the rotating worktable to rotate around the central axis of the rotating worktable, the axial direction of the second torque motor forms the C-axis of the vertical and horizontal 90° indexing worktable, and the axis of the second torque motor forms an angle of 45° with the axis of the first torque motor.

[0015] Compared with the prior art, the gantry five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable described in the present invention has the following beneficial effects: 1. The vertical and horizontal 90° indexing worktable is installed sideways on the bed, so that when the worktable is in a horizontal state, the worktable faces the operating station side of the machine tool, that is, the position for loading and unloading workpieces is closer to the operator, which is convenient for installing and disassembling workpieces; 2. A chip removal channel is provided between the worktable base and the protective pull plate, so that the chip removal channel is arranged along the length direction of the bed, and the chip removal channel can conveniently remove the processed chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a gantry-type five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable disclosed in the present invention;

[0017] Figure 2 This is a schematic diagram of the asymmetric door opening structure after the bed and the column are combined;

[0018] Figure 3 It is a coordinate schematic diagram of a gantry-type five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable disclosed in the present invention;

[0019] Figure 4 It is a schematic diagram showing that the work turntable of the vertical and horizontal 90° turning worktable is in a horizontal state;

[0020] Figure 5 This is a schematic diagram of the working turntable of the vertical and horizontal 90° turning worktable in a vertical state.

[0021] In the figure: 1. bed, 2. column, 3. Z-axis guide, 4. X-axis guide, 5. X-axis screw, 6. X-axis saddle, 7. electric cabinet unit, 8. Z-axis slide ram spindle box, 9. tool changing robot, 10. tool magazine, 11. Y-axis vertical and horizontal 90° indexing worktable, 12. third Y-axis guide, 13. second Y-axis guide, 14. first Y-axis guide, 15. chip removal channel, 16. Y-axis screw, 17. worktable slide, 18. rotating base, 19. mounting surface, 20. crossbeam, 21. first support column, 22. second support column, 23. inclined support column, 24. chip removal inner protection plate, 25. protection pull plate, 26. rotating worktable. DETAILED DESCRIPTION

[0022] like Figure 1The present invention discloses a gantry-type five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable, which is characterized by comprising a bed 1, a column 2, an X-axis guide rail 4, an X-axis lead screw 5, an X-axis saddle 6, an electric cabinet unit 7, a Y-axis guide rail, a Y-axis vertical and horizontal 90° indexing worktable 11, a Y-axis lead screw 16, a Z-axis guide rail 3, a Z-axis ram spindle box 8, a tool magazine 10, and a tool changing manipulator 9. The bed 1 is arranged horizontally, and one end of the bed 1 is provided with the column 2, and the side of the column 2 facing the bed is provided with the X-axis guide rail 4, and the rear end of the column 2 is provided with an electric cabinet unit 7, and the X-axis guide rail 4 is provided with the X-axis saddle 6, and the X-axis saddle 6 is connected to the X-axis lead screw 5, and one end of the X-axis lead screw 5 is connected to a torque motor, and the torque motor can drive the lead screw to rotate, thereby driving the electric spindle of the CNC machine tool to move along the X direction.

[0023] The X-axis saddle 6 is provided with the Z-axis slider, the Z-axis ram spindle box 8 is provided with the Z-axis guide rail 3, the Z-axis ram spindle box 8 is connected to the Z-axis slider through the Z-axis guide rail 3, the Z-axis ram spindle box is connected with a Z-axis lead screw, one end of the Z-axis lead screw is connected to a torque motor, thereby driving the electric spindle to move along the Z direction, the tool magazine 10 and the tool changing robot 9 are installed on the column 2, and the electric spindle tool can be quickly replaced.

[0024] The Y-axis guide rail comprises a first Y-axis guide rail 14, a second Y-axis guide rail 13 and a third Y-axis guide rail 12, wherein the first Y-axis guide rail 14, the second Y-axis guide rail 13 and the third Y-axis guide rail 12 are arranged on the bed 1, and the third Y-axis guide rail 12 is arranged on one side of the bed 1. Figure 1 The third Y-axis guide rail 12 is arranged on the left side of the bed (facing the column), and the plane height of the third Y-axis guide rail 12 is higher than the plane height of the first Y-axis guide rail 14 and the second Y-axis guide rail 12.

[0025] The Y-axis vertical and horizontal 90° indexing workbench 11 is installed on the Y-axis guide rail. The Y-axis vertical and horizontal 90° indexing workbench includes a workbench slide 17, a rotating base 18 and a rotating workbench 26. A mounting surface 19 is provided on the workbench base 17. The mounting surface 19 is inclined downward from the side where the third Y-axis guide rail 12 is provided on the bed 1 to the side where the first Y-axis guide rail 14 is provided. The mounting surface 19 is parallel to the Y-axis direction of the machine tool. The rotating base 18 is installed on the mounting surface 19. The rotating base 18 can rotate around the axis perpendicular to the mounting surface 19 on the mounting surface 19. Specifically, a driving mechanism is installed on the workbench slide, and the driving mechanism can drive the rotating base 18 to rotate around the axis perpendicular to the mounting surface 19. The driving mechanism can be a torque motor or a torque motor and a reduction mechanism. When the driving mechanism drives the rotating base 18 to rotate around the axis perpendicular to the mounting surface 19, the working turntable 18 can be flipped from a horizontal state and a vertical state.

[0026] The bed 1 is provided with protective pull plates 25 on both sides, and a chip removal channel 15 is provided between the workbench base 17 and the protective pull plate 25 on one side of the bed provided with the first Y-axis guide rail, and a spiral chip removal structure can be provided in the chip removal channel 15.

[0027] In the gantry-type five-axis vertical machining center disclosed in the present invention, since the mounting surface of the worktable base of the Y-axis vertical-horizontal 90° indexing worktable is tilted toward one side of the bed, when the worktable is in a horizontal state, the worktable faces the personnel operating area of ​​the gantry-type five-axis vertical machining center, and there are no obstacles between the worktable and the operator, so it is convenient to load and unload materials and operate. At the same time, since the mounting surface is an inclined structure, a chip removal channel is provided between the worktable base and the protective pull plate. Therefore, the chips generated during the workpiece processing will automatically slide into the chip removal channel along the inclined mounting surface to facilitate chip removal. At the same time, since the chip removal channel is also on one side of the operating area and there is no blocking structure on the chip removal channel, it is convenient to carry out machine chip removal or manual chip removal.

[0028] Furthermore, two chip removal inner protection plates 24 are also provided on the worktable slide 17. In the Y-axis direction of the machine tool, the two chip removal inner protection plates 24 are respectively arranged on both sides of the worktable slide 17. The chip removal inner protection plates 24 are inclined downward from the side where the third Y-axis guide rail is provided on the bed 1 to the side of the first Y-axis guide rail. The chip removal inner protection plates can allow the chips falling off from both sides of the worktable slide to slide into the chip removal channel, thereby preventing the chips from falling into the bed and causing pollution and wear of the bed surface or hindering the movement of the Y-axis vertical and horizontal 90° rotation worktable.

[0029] Furthermore, if Figure 2 As shown, the column 2 includes a crossbeam 20, a first support column 21, a second support column 22 and an inclined support column 23. In this embodiment, the column is an integrated structure. The first support column 21 and the second support column 22 are fixed to one end of the bed 1, and the inclined support column 23 is installed on the upper end of the first support column 21. The inclined support column 23 is inclined upward from the edge direction of the bed to the center line direction of the bed, as shown in FIG. Figure 2 In the figure, the oblique support column 23 is inclined from the lower left to the upper right, and the crossbeam 20, the first support column 21, the second support column 22 and the oblique support column 23 form a gate-type asymmetric structure, which is firmly connected with the bed 1 to form an overall asymmetric door structure, and the upper ends of the oblique support column 23 and the second support column 22 are installed with the crossbeam 20, the X-axis guide rail 4 is installed on the crossbeam 20, and the tool magazine 10 is installed on the oblique support column 23. Since the tool magazine is directly installed on the oblique support column, the overall volume of the machine tool can be reduced, and it is convenient to quickly replace the tool.

[0030] Furthermore, if Figure 3 As shown, the axis of the B axis on the vertical and horizontal 90° indexing workbench forms an angle of 45° with the plane formed by the XY coordinates and the plane formed by the YZ coordinates.

[0031] Specifically, Figure 4 and Figure 5 As shown, the mounting surface is 45° to the upper surface of the bed, a first torque motor is mounted on the worktable slide, the first torque motor is connected to the rotating base, the axis of the first torque motor is perpendicular to the mounting surface, the axis of the first torque motor forms the B-axis of the vertical and horizontal 90° indexing worktable, the first torque motor can drive the rotating base to rotate along the MM direction, a second torque motor and a circular rotating worktable 26 are provided on the rotating base, the second torque motor can drive the rotating worktable 26 to rotate around the central axis of the rotating worktable, that is, in the direction of NN in the figure, the axis direction of the second torque motor forms the C-axis of the vertical and horizontal 90° indexing worktable, and the axis of the second torque motor forms an angle of 45° with the axis of the first torque motor.

[0032] The five-axis machining of the machine tool can be realized by the horizontal and vertical flipping of the rotating base of the vertical and horizontal 90° indexing worktable (rotation in the MM direction), the rotation of the rotary table around its own axis driven by the second torque motor (rotation in the NN direction), the movement of the vertical and horizontal 90° indexing worktable in the Y direction driven by the Y-axis lead screw, and the movement of the electric spindle in the X-axis and Y-axis guide rails.

[0033] The gantry-type five-axis vertical machining center turntable axes of the vertical and horizontal 90° indexing worktable of this embodiment are all directly driven by torque motors, which greatly improves the response speed of the B-axis and the C-axis. The zero-gap transmission enables the functional components to operate smoothly, thereby improving the overall stability of the machine tool. The overall size of the worktable is reduced, making the structure of the whole machine more compact.

[0034] The vertical and horizontal 90° indexing worktable of this embodiment is driven by a servo motor to move forward and backward along the Y axis, which can ensure that there is no vibration and distortion when the Y axis moves at high speed, the center of gravity remains unchanged, and the operation is stable.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gantry-type five-axis vertical machining center equipped with a vertical and horizontal 90° indexing worktable, characterized in that: It includes bed, column, X-axis guide rail, X-axis lead screw, X-axis saddle, electric cabinet unit, Y-axis guide rail, Y-axis vertical and horizontal 90° indexing table, Y-axis lead screw, Z-axis guide rail, Z-axis slide block, Z-axis ram spindle box, tool magazine and tool changing robot; The bed is arranged horizontally, one end of the bed is provided with the column, the column is provided with the X-axis guide rail, the X-axis saddle is provided on the X-axis guide rail, the Z-axis slider is provided on the X-axis saddle, the Z-axis slider is provided on the Z-axis ram spindle box, the Z-axis ram spindle box is connected with the Z-axis slider through the Z-axis guide rail, and the tool magazine and the tool changing manipulator are installed on the column; The Y-axis guide rail comprises a first Y-axis guide rail, a second Y-axis guide rail and a third Y-axis guide rail; The first Y-axis guide rail, the second Y-axis guide rail and the third Y-axis guide rail are arranged on the bed, the third Y-axis guide rail is arranged on one side of the bed, and the plane height of the third Y-axis guide rail is higher than the plane height of the first Y-axis guide rail and the second Y-axis guide rail; The Y-axis vertical and horizontal 90° indexing worktable is installed on the Y-axis guide rail, and the Y-axis vertical and horizontal 90° indexing worktable includes a worktable slide, a rotating base and a rotating worktable. The worktable slide is provided with a mounting surface, and the mounting surface is inclined downward from the side of the bed body provided with the third Y-axis guide rail to the side provided with the first Y-axis guide rail, and the mounting surface is parallel to the Y-axis direction of the machine tool. The rotating base is installed on the worktable slide, and the rotating base can rotate around an axis perpendicular to the mounting surface, and the rotating worktable is installed on the rotating base; Protective pull plates are provided on both sides of the bed, and a chip removal channel is provided between the workbench slide and the protective pull plate on one side of the first Y-axis guide rail on the bed.

2. The gantry-type five-axis vertical machining center with a vertical and horizontal 90° indexing worktable according to claim 1 is characterized in that: Two chip removal inner protection plates are also provided on the worktable slide. In the Y-axis direction of the machine tool, the two chip removal inner protection plates are respectively arranged on both sides of the worktable slide. The chip removal inner protection plates are inclined downward from the side of the bed where the third Y-axis guide rail is provided to the side of the first Y-axis guide rail.

3. The gantry-type five-axis vertical machining center with a vertical and horizontal 90° indexing worktable according to claim 1 or 2, characterized in that: The columns include a crossbeam, a first support column, a second support column and an oblique support column. The first support column and the second support column are installed at one end of the bed, the oblique support column is installed at the upper end of the first support column, the upper ends of the oblique support column and the second support column are installed with the crossbeam, the X-axis guide rail is installed on the crossbeam, and the tool magazine is installed on the oblique support column.

4. The gantry-type five-axis vertical machining center with a vertical and horizontal 90° indexing worktable according to claim 3 is characterized in that: The mounting surface of the worktable slide forms an angle of 45° with the upper surface of the bed. A first torque motor is installed on the worktable slide. The first torque motor is connected to the rotating base. The axis of the first torque motor is perpendicular to the mounting surface. The axis of the first torque motor forms the B-axis of the vertical and horizontal 90° indexing worktable. A second torque motor is provided on the rotating base. The second torque motor can drive the rotating worktable to rotate around the central axis of the rotating worktable. The axis direction of the second torque motor forms the C-axis of the vertical and horizontal 90° indexing worktable. The axis of the second torque motor forms an angle of 45° with the axis of the first torque motor.

Images