A turning and milling combined gantry machining center

Abstract

The application relates to a turning and milling combined gantry machining center, and relates to the technical field of machining centers, which comprises a guide rail base, a gantry is slidably connected to the guide rail base, a cross beam sliding plate is slidably connected to the gantry, a Z-direction sliding table is slidably connected to the cross beam sliding plate, a main shaft is installed on the Z-direction sliding table, a servo rotary table is further provided, and a base is further provided; the servo rotary table is used for mounting a workpiece; a side milling head and a turning tool seat are placed on the base; a placing groove one for the side milling head to enter is arranged on the top surface of the base; a placing groove two for the turning tool seat to enter is arranged on the top surface of the base; and the placing groove one penetrates through to the front surface of the base. The main shaft can automatically change tools; after the workpiece is clamped, end face machining, side wall turning and milling machining can be completed at one time; the degree of automation is high; and the efficiency is improved; through the servo rotary table, turning operation is realized, the orientation of the workpiece can be accurately adjusted, and the machining of specific positions of the side wall is facilitated; through the side milling head, milling operation on the side surface of the workpiece is realized.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of machining centers, in particular to a turning and milling combined gantry machining center. BACKGROUND

[0002] The gantry machining center refers to a machining center comprising a gantry frame, the gantry frame slides along a guide rail base, a machining spindle has left and right movement and lifting functions, so as to adjust the machining position in XYZ three directions, and different tools are replaced at the lower end of the machining spindle, so as to realize different machining purposes.

[0003] For example, the utility model patent with the announcement number CN215546688U discloses a dynamic column gantry machining center, which comprises a bed body, a column, a workbench and a moving structure; the column is installed on the bed body, the workbench is installed on the bed body, and the moving structure is installed on the column; the moving structure comprises a horizontal transverse moving assembly, a horizontal longitudinal moving assembly and a vertical moving assembly; the horizontal transverse moving assembly is installed on the bed body, the horizontal longitudinal moving assembly is installed on the horizontal transverse moving assembly, and the vertical moving assembly is installed on the horizontal longitudinal moving assembly. The slide ram adopts a ball screw direct transmission type design mechanism, is driven by an alternating current servo motor, the slide ram boring and milling head is provided with an automatic loosening tool device, and is loosened by gas-liquid pressure and is tightened by a disc spring.

[0004] According to the related technology, the gantry machining center can complete the machining of the top surface of the workpiece, but it is difficult to turn and mill the side surface of the workpiece, for example, the machining of the butterfly valve body, and other machine tools need to be used or the position of the workpiece needs to be frequently adjusted, which is relatively cumbersome. Utility model content

[0005] The application provides a turning and milling combined gantry machining center, which can complete end face machining, side wall turning and milling machining at one time after clamping the workpiece, and the efficiency is improved.

[0006] The application provides a turning and milling combined gantry machining center, which adopts the following technical scheme:

[0007] A turning and milling combined gantry machining center comprises a guide rail base, a gantry frame is slidably connected to the guide rail base, a cross beam sliding plate is slidably connected to the gantry frame, a Z-direction sliding table is slidably connected to the cross beam sliding plate, a main shaft is installed on the Z-direction sliding table, a servo rotating table and a base are further included, the servo rotating table is used for installing a workpiece, a side milling head and a turning tool holder are placed on the base, a placing groove one for the side milling head and a placing groove two for the turning tool holder are arranged on the top surface of the base, and the placing groove one penetrates through to the front surface of the base.

[0008] By adopting the technical scheme, the top end face of the workpiece can be drilled and milled by installing the cutter at the bottom of the main shaft; when the main shaft uses the turning tool holder, the main shaft does not rotate, the servo rotary table drives the workpiece to rotate, and the main shaft can move to turn the outer circle of the workpiece; when the main shaft uses the side milling head, the servo rotary table drives the workpiece to rotate to the direction that the flange faces the side milling head, then the servo rotary table is locked, the main shaft drives the milling cutter of the side wall of the side milling head to rotate, the workpiece remains not rotating, and the flange on one side of the valve body can be milled by moving the main shaft.

[0009] Optionally, a mechanical hand device and a tool holder are arranged beside the guide rail seat, and the mechanical hand device is used to transfer the cutter between the tool holder and the main shaft.

[0010] By adopting the technical scheme, for smaller cutters, the main shaft is automatically changed by the mechanical hand device, and according to different cutters, the end face of the valve body can be milled, drilled and the like.

[0011] Optionally, the mechanical hand device is a mechanical hand with at least five axes, a pneumatic clamping jaw is fixed to the free end of the mechanical hand device, an arc-shaped positioning strip is fixed to the inner wall of the clamping jaw, and the positioning strip is used to be embedded in the annular groove outside the cutter.

[0012] By adopting the technical scheme, the mechanical hand device is a mechanical hand with at least five axes to improve the degree of freedom; the positioning strip is used to be embedded in the annular groove outside the cutter, and accurate positioning can be formed after the pneumatic clamping jaw clamps the cutter.

[0013] Optionally, a support frame is fixed in the first placing groove, and the side milling head is placed on the support frame through the grooves on two sides.

[0014] By adopting the technical scheme, the cooperation of the support frame and the grooves on two sides of the side milling head can avoid the self-rotation of the side milling head and the deviation of the angle, and can also avoid the contact between the side milling head and the inner wall of the first placing groove to generate abrasion.

[0015] Optionally, the top surface of the base is provided with a pad on both sides of the second placing groove, the pad is made of non-metallic material, and the turning tool holder is placed on the pad.

[0016] By adopting the technical scheme, the turning tool holder is placed on the pad. The pad will not abrade the turning tool holder, the turning tool holder is raised by the pad, and abrasion between the turning tool holder and the inner wall of the second placing groove is avoided.

[0017] Optionally, a positioning pin is fixed on the top surface of the base, the positioning pin penetrates the pad, and the positioning pin is inserted into the positioning hole in the bottom surface of the turning tool holder.

[0018] By adopting the technical scheme, the position of the turning tool holder is accurately positioned by the positioning pin.

[0019] Optionally, the guide rail seat is long strip-shaped and symmetrically provided with two, and the two guide rail seats are respectively in sliding connection with two lower ends of the gantry, and the servo rotary table and the base are located between the two guide rail seats.

[0020] By adopting the above technical scheme, by providing two guide rail seats, transportation is facilitated, the servo rotary table and the base are not raised, and the overall height requirement of the gantry is reduced.

[0021] Optionally, the top surface of the side milling head and the tool holder is fixed with a plurality of positioning blocks in the circumferential direction, and the bottom surface of the main shaft is provided with a positioning groove corresponding in shape and position to the positioning blocks.

[0022] By adopting the above technical scheme, by the plug-in cooperation of the positioning blocks and the positioning groove, on the one hand, the main shaft is accurately positioned with the side milling head or the tool holder, and on the other hand, the shell of the side milling head or the tool holder is prevented from rotating.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The main shaft can automatically change tools, and after clamping the workpiece, the end face machining, the side wall turning and the milling machining can be completed at one time, the degree of automation is high, and the efficiency is improved;

[0025] 2. By the servo rotary table, turning operation is realized, and the orientation of the workpiece can also be accurately adjusted, facilitating the machining of the specific position of the side wall;

[0026] 3. By providing the side milling head, milling operation on the side of the workpiece is realized. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of a turning and milling combined gantry machining center of an embodiment;

[0028] Figure 2 is a perspective view of a base, a side milling head and a tool holder of an embodiment;

[0029] Figure 3 is a cooperation structure diagram of a pneumatic clamping jaw and a tool of an embodiment.

[0030] BRIEF DESCRIPTION OF DRAWINGS: 1, guide rail seat; 2, servo rotary table; 3, base; 11, gantry; 12, cross beam sliding plate; 13, Z-direction sliding table; 14, main shaft; 41, side milling head; 42, tool holder; 31, placement groove one; 32, placement groove two; 33, support frame; 34, cushion block; 35, positioning pin; 43, positioning block; 5, mechanical hand device; 6, tool holder; 51, pneumatic clamping jaw; 52, positioning strip. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below with reference to the drawings.

[0032] Referring to Figure 1 The embodiment discloses a turning and milling combined gantry machining center, which comprises a guide rail seat 1, a servo rotary table 2 and a base 3. The guide rail seat 1 is slidably connected with a gantry 11. The gantry 11 is slidably connected with a cross beam sliding plate 12. The cross beam sliding plate 12 is slidably connected with a Z-direction sliding table 13. The Z-direction sliding table 13 is installed with a main shaft 14. The gantry 11 slides forward and backward. The cross beam sliding plate 12 slides left and right. The Z-direction sliding table 13 slides up and down. The gantry 11, the cross beam sliding plate 12 and the Z-direction sliding table 13 are respectively driven to move by respective servo motors and screw mechanisms, so that the position can be accurately adjusted, and thus the accurate adjustment of the lower end position of the main shaft 14 in the XYZ three directions is realized.

[0033] The guide rail seat 1 is long strip-shaped and symmetrically provided with two guide rail seats 1. The two guide rail seats 1 are respectively slidably connected with two lower ends of the gantry 11. The servo rotary table 2 and the base 3 are located between the two guide rail seats 1. By arranging the two guide rail seats 1, transportation is facilitated, the servo rotary table 2 and the base 3 are prevented from being raised, and the overall height requirement of the gantry 11 is reduced.

[0034] The servo rotary table 2 is used for mounting a workpiece. The servo rotary table 2 is driven to rotate by a servo motor and can rotate and stop at any angle position. The servo rotary table 2 has a braking or locking function and can keep stable and immobile when stopping rotating.

[0035] Referring to Figure 2 The base 3 is provided with a side milling head 41 and a turning tool holder 42. The top surface of the base 3 is provided with a placing groove one 31 for the side milling head 41 to enter and a placing groove two 32 for the turning tool holder 42 to enter. The placing groove two 32 is provided with two placing grooves two 32 and is located on the two sides of the placing groove one 31. The placing groove one 31 penetrates to the front surface of the base 3. The height of the side milling head 41 is high, so that the side milling head 41 can move to the front surface and away from the base 3. The turning tool holder 42 can move upward and away from the base 3.

[0036] The placing groove one 31 is fixed with a support frame 33. The side milling head 41 is placed on the support frame 33 through the grooves on the two sides. Through the cooperation of the support frame 33 and the grooves on the two sides of the side milling head 41, the side milling head 41 is prevented from rotating and deviating from the angle, and the side milling head 41 is prevented from contacting the inner wall of the placing groove one 31 to generate abrasion.

[0037] The top surface of the base 3 is fixed with a cushion block 34 on both sides of the placing groove two 32, the cushion block 34 is made of non-metallic material such as rubber, polyurethane or Teflon, and the tool holder 42 is placed on the cushion block 34. The cushion block 34 will not wear the tool holder 42, and the tool holder 42 is lifted by the cushion block 34, which avoids the wear caused by the contact between the tool holder 42 and the inner wall of the placing groove two 32. The top surface of the base 3 is fixed with a positioning pin 35, the positioning pin 35 penetrates the cushion block 34, and the positioning pin 35 is inserted into the positioning hole in the bottom surface of the tool holder 42, so that the position of the tool holder 42 is accurately positioned by the positioning pin 35.

[0038] The top surface of the side milling head 41 and the tool holder 42 is fixed with a plurality of positioning blocks 43 in the circumferential direction, the plurality of positioning blocks 43 make the top surface of the side milling head 41 and the tool holder 42 present a gear ring shape, and the bottom surface of the main shaft 14 is provided with a positioning groove corresponding to the shape and position of the positioning block 43. Through the plug-in cooperation of the positioning block 43 and the positioning groove, on the one hand, the main shaft 14 is accurately positioned with the side milling head 41 or the tool holder 42, and on the other hand, the rotation of the shell of the side milling head 41 or the tool holder 42 is avoided.

[0039] Referring to Figure 1 and Figure 3 , a mechanical hand device 5 and a tool holder 6 are arranged beside the guide rail base 1, and a plurality of tools are arranged and placed on the tool holder 6, wherein the tools include milling cutters, drills, taps, chamfering tools and the like. The mechanical hand device 5 is used to transfer the tools between the tool holder 6 and the main shaft 14. When the tools are changed, the main shaft 14 moves to a position close to the mechanical hand device 5. The mechanical hand device 5 is a mechanical hand with at least five axes to improve the degree of freedom. The free end of the mechanical hand device 5 is fixed with a pneumatic gripper 51, the inner wall of the gripper of the pneumatic gripper 51 is fixed with a circular arc-shaped positioning strip 52, the positioning strip 52 is used to be embedded in the ring groove on the outer side of the tool, and accurate positioning can be formed after the pneumatic gripper 51 clamps the tool. The mechanical hand device 5 acts according to the pre-set program.

[0040] The main shaft 14 is disassembled and assembled with the side milling head 41 or the tool holder 42 or other tools through axial movement. The inside of the main shaft 14 clamps the side milling head 41 or the tool holder 42 or other tools through an electric or hydraulic mechanism, which is a standardized general structure and will not be described here.

[0041] The implementation principle of the turning and milling combined gantry machining center in the embodiment of the application is that the workpiece to be machined is placed on the servo rotary table 2, the workpiece is clamped by a clamp, and the workpiece is arranged concentrically with the servo rotary table 2. A turning tool is installed on the tool holder 42 in advance, and a milling cutter is installed on the outer end of the side milling head 41. The movement trajectory of the main shaft 14 is controlled by the controller, so as to realize automatic tool changing.

[0042] Taking the valve body of a butterfly valve as an example, when the main shaft 14 uses the turning tool holder 42, the main shaft 14 does not rotate, the workpiece is rotated by the servo rotary table 2, and the main shaft 14 can move to turn the outer circle of the workpiece; when the main shaft 14 uses the side milling head 41, the servo rotary table 2 rotates the workpiece to the direction in which the flange is opposite to the side milling head 41, then the servo rotary table 2 is locked, the main shaft 14 rotates the milling cutter of the side wall of the side milling head 41, the workpiece remains not rotating, and the main shaft 14 can move to mill the end face of the flange on one side of the valve body.

[0043] For other smaller tools, the main shaft 14 is changed by the manipulator device 5, and according to different tools, the end face of the valve body can be milled, drilled and the like.

[0044] In summary, through the turning and milling combined gantry machining center, after the workpiece is clamped, the end face machining, the side wall turning (for example, turning the outer circle) and the milling (for example, milling the end face of the flange) can be completed at one time, the degree of automation is high, and the efficiency is improved.

[0045] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A milling and turning gantry machining center, comprising a guide rail base (1), a gantry frame (11) slidably connected to the guide rail base (1), a crossbeam slide plate (12) slidably connected to the gantry frame (11), a Z-axis slide table (13) slidably connected to the crossbeam slide table (12), and a spindle (14) mounted on the Z-axis slide table (13), characterized in that: It also includes a servo rotary table (2) and a base (3). The servo rotary table (2) is used to install workpieces. The base (3) is used to place a side milling head (41) and a tool holder (42). The top surface of the base (3) is provided with a placement groove 1 (31) for the side milling head (41) to enter and a placement groove 2 (32) for the tool holder (42) to enter. The placement groove 1 (31) extends through to the front of the base (3).

2. The milling-turning gantry machining center according to claim 1, characterized in that: A robotic arm device (5) and a tool holder (6) are provided next to the guide rail seat (1). The robotic arm device (5) is used to transfer the tool between the tool holder (6) and the spindle (14).

3. A turning-milling composite gantry machining center according to claim 2, characterized in that: The robotic arm device (5) is a robotic arm with at least five axes. A pneumatic gripper (51) is fixed to the free end of the robotic arm device (5). An arc-shaped positioning strip (52) is fixed to the inner wall of the gripper of the pneumatic gripper (51). The positioning strip (52) is used to be embedded in the annular groove on the outside of the tool.

4. The milling-turning gantry machining center according to claim 1, characterized in that: A support frame (33) is fixed in the placement slot (31), and the side milling head (41) is placed on the support frame (33) through the grooves on both sides.

5. A turning-milling composite gantry machining center according to claim 1, characterized in that: On the top surface of the base (3), pads (34) are fixed on both sides of the placement groove (32). The pads (34) are made of non-metallic material, and the lathe tool holder (42) is placed on the pads (34).

6. A turning-milling composite gantry machining center according to claim 5, characterized in that: A positioning pin (35) is fixed on the top surface of the base (3). The positioning pin (35) passes through the pad (34) and is inserted into the positioning hole on the bottom surface of the tool holder (42).

7. A turning-milling composite gantry machining center according to claim 1, characterized in that: The guide rail base (1) is long and symmetrically arranged in two. The two guide rail bases (1) are slidably connected to the two lower ends of the gantry frame (11) respectively. The servo rotary table (2) and the base (3) are located between the two guide rail bases (1).

8. A turning-milling composite gantry machining center according to claim 1, characterized in that: The top surfaces of the side milling head (41) and the tool holder (42) are fixed with a plurality of positioning blocks (43) along the circumferential direction, and the bottom surface of the spindle (14) is provided with positioning grooves corresponding to the shape and position of the positioning blocks (43).

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