Multi-axis numerical control machining center

Abstract

The invention relates to the technical field of metal cutting and forming machine tools, and particularly discloses a multi-axis numerical control machining center which comprises a rack, a base used for fixing a workpiece is fixedly arranged at the lower end of the rack, and a multi-axis driving device used for driving a cutter to move on the X axis, the Y axis and the Z axis is arranged at the upper end of the rack. The multi-axis driving device comprises an X-axis driving mechanism, a Y-axis driving mechanism and a Z-axis driving mechanism, and the X-axis driving mechanism is arranged at the upper end of the rack and used for driving the Y-axis driving mechanism and the Z-axis driving mechanism to reciprocate in the X-axis direction; the Y-axis driving mechanism is arranged on the X-axis driving mechanism and used for driving the Z-axis driving mechanism to reciprocate in the Y-axis direction, and the Z-axis driving mechanism is arranged on the Y-axis driving mechanism and used for driving a cutter to reciprocate in the Z-axis direction. The machining center has the advantages that the machining center can be debugged conveniently, and therefore the production efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of metal cutting and forming machine tools, and in particular to a multi-axis CNC machining center. Background Art

[0002] CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC system suitable for machining complex parts. CNC machining center is one of the most productive and widely used CNC machine tools in the world.

[0003] Machining centers usually have three drive directions, namely the X-axis, Y-axis, and Z-axis, and the drive structures in the three directions are distributed in different parts of the machining center. For example, the base used to fix the workpiece is driven on the X-axis and Y-axis, and the tool used to cut the workpiece is driven on the Z-axis to complete the machining operation on the workpiece. This method increases the difficulty of debugging the machining center, and after long-term use, the re-debugging time after accidents such as tool rolling and tool breakage is greatly prolonged, which reduces the production efficiency of the workpiece. This problem needs to be solved urgently. Summary of the invention

[0004] In order to facilitate debugging of a machining center and thus improve production efficiency, the present application provides a multi-axis CNC machining center.

[0005] The present application provides a multi-axis CNC machining center, which adopts the following technical solution: A multi-axis CNC machining center comprises a frame, a base for fixing a workpiece is fixedly arranged at the lower end of the frame, a multi-axis driving device for driving a tool to move on an X-axis, a Y-axis and a Z-axis is arranged at the upper end of the frame, the multi-axis driving device comprises an X-axis driving mechanism, a Y-axis driving mechanism and a Z-axis driving mechanism, the X-axis driving mechanism is arranged at the upper end of the frame for driving the Y-axis driving mechanism and the Z-axis driving mechanism to reciprocate in the X-axis direction, the Y-axis driving mechanism is arranged on the X-axis driving mechanism for driving the Z-axis driving mechanism to reciprocate in the Y-axis direction, and the Z-axis driving mechanism is arranged on the Y-axis driving mechanism for driving the tool to reciprocate in the Z-axis direction.

[0006] By adopting the above technical scheme, the frame supports the base, the tool and the multi-axis drive device. When the workpiece needs to be processed, the base fixes the workpiece, the X-axis drive mechanism drives the Y-axis drive mechanism and the Z-axis drive mechanism to reciprocate in the X-axis direction, the Y-axis drive mechanism drives the Z-axis drive mechanism to reciprocate in the Y-axis direction, and the Z-axis drive mechanism drives the tool to reciprocate in the Z-axis direction, so that the tool can move flexibly and process the workpiece. Various mobile drives are concentrated on the drive of the tool, which is convenient for the staff to debug, and the re-debugging time after accidents such as tool rolling and tool breaking is greatly reduced, which is conducive to improving production efficiency.

[0007] Preferably, the X-axis driving mechanism includes a first driving member, a first screw rod and a first movable seat, the first screw rod is horizontally rotatably connected to the upper end of the frame, the first driving member is arranged at the upper end of the frame to drive the first screw rod to reciprocate, the first movable seat is horizontally slidably connected to the upper end of the frame, and the first movable seat is threadedly sleeved on the first screw rod, and the Y-axis driving mechanism and the Z-axis driving mechanism are arranged on the first movable seat.

[0008] By adopting the above technical solution, the first driving member drives the first screw to rotate reciprocatingly, the reciprocating rotation of the first screw drives the first movable seat to move reciprocatingly in the X-axis direction, and the first movable seat drives the Y-axis driving mechanism and the Z-axis driving mechanism to move reciprocatingly in the X-axis direction, thereby driving the tool connected to the Z-axis driving mechanism to move reciprocatingly in the X-axis direction.

[0009] Preferably, the first driving member and the first screw rod are provided in two groups, and the two groups of the first driving member and the first screw rod are arranged on opposite sides of the Y-axis driving mechanism, the two first screw rods are located in the same horizontal plane and are arranged in parallel, and the two ends of the first movable seat in the horizontal direction are respectively threadedly sleeved on the two first screw rods.

[0010] By adopting the above technical solution, this arrangement is conducive to improving the stability of the first movable seat when it moves, thereby helping to improve the stability of the tool when it moves in the X-axis direction.

[0011] Preferably, the Y-axis driving mechanism includes a second driving member, a second screw rod and a second movable seat, the second screw rod is horizontally rotatably connected to the first movable seat, the second screw rod is vertically arranged to the first screw rod, the second driving member is arranged on the first movable seat to drive the second screw rod to reciprocate, the second movable seat is horizontally slidably connected to the side wall of the first movable seat, and the second movable seat is threadedly sleeved on the second screw rod, and the Z-axis driving mechanism is arranged on the second movable seat.

[0012] By adopting the above technical solution, the second driving member drives the second screw rod to rotate reciprocatingly, the reciprocating rotation of the second screw rod drives the second movable seat to move reciprocatingly in the Y-axis direction, and the second movable seat drives the Z-axis driving mechanism to move reciprocatingly in the Y-axis direction, thereby driving the tool connected to the Z-axis driving mechanism to move reciprocatingly in the Y-axis direction.

[0013] Preferably, the Z-axis driving mechanism includes a third driving member, a third screw rod and a tool holder, the third screw rod is vertically rotatably connected to the second movable seat, the third screw rod and the second screw rod and the first screw rod are arranged perpendicular to each other, the third driving member is arranged on the second movable seat to drive the third screw rod to reciprocate, the tool holder is vertically slidably connected to the side wall of the second movable seat, and the tool holder is threadedly sleeved on the third screw rod, and the tool is detachably connected to the bottom of the tool holder.

[0014] By adopting the above technical solution, the third driving member drives the third screw rod to reciprocate, and the reciprocating rotation of the third screw rod drives the tool holder to reciprocate in the Z-axis direction, thereby realizing that the tool holder drives the tool to reciprocate in the Y-axis direction.

[0015] Preferably, a water spray pipe is connected to the side wall of the knife seat, and the end of the water spray pipe faces the knife.

[0016] By adopting the above technical solution, when the tool is processing the workpiece, the end of the water spray pipe sprays cutting fluid toward the tool, which is beneficial to improving the processing quality.

[0017] Preferably, a support plate for supporting the base is provided at the lower end of the frame, the base is located in the middle of the support plate, and a drainage hole is provided on the support plate around the base.

[0018] By adopting the above technical solution, the support plate supports the base, which is beneficial to improving the stability of the base fixing the workpiece, and the drain hole drains the cutting fluid flowing out of the spray pipe to prevent the accumulation of cutting fluid from interfering with the processing operation of the workpiece.

[0019] Preferably, the drain hole is arranged in a funnel shape.

[0020] By adopting the above technical solution, this arrangement facilitates the drainage operation of the cutting fluid.

[0021] Preferably, a water collecting trough is provided at the bottom of the frame below the support plate, and the vertical cross-section of the water collecting trough is in an inverted trapezoidal shape.

[0022] By adopting the above technical solution, the water collecting trough also drains the cutting fluid, which is beneficial to prevent the cutting fluid from overflowing during the drainage process and is beneficial to improving the production environment.

[0023] Preferably, a water collecting box is provided at the bottom of the frame below the water collecting trough, the bottom of the water collecting trough is open, the upper end of the water collecting box is open, and the bottom of the water collecting trough is connected to the water collecting box.

[0024] By adopting the above technical solution, the water collecting tank collects the discharged cutting fluid, making it easy to process the cutting fluid.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. A multi-axis drive device is provided for driving the tool to move on the X-axis, Y-axis and Z-axis, and the multi-axis drive device includes an X-axis drive mechanism, a Y-axis drive mechanism and a Z-axis drive mechanism. After the base fixes the workpiece, the X-axis drive mechanism drives the Y-axis drive mechanism and the Z-axis drive mechanism to move back and forth in the X-axis direction, the Y-axis drive mechanism drives the Z-axis drive mechanism to move back and forth in the Y-axis direction, and the Z-axis drive mechanism drives the tool to move back and forth in the Z-axis direction, so that the tool can move flexibly and perform processing operations on the workpiece. Various mobile drives are concentrated on the drive of the tool, which is convenient for the staff to debug, and the re-debugging time after accidents such as tool rolling and tool breakage is greatly reduced, which is conducive to improving production efficiency.

[0026] 2. By setting a first driving member, a first screw rod and a first moving seat, the first driving member drives the first screw rod to rotate back and forth, the reciprocating rotation of the first screw rod drives the first moving seat to move back and forth in the X-axis direction, and the first moving seat drives the Y-axis driving mechanism and the Z-axis driving mechanism to move back and forth in the X-axis direction, thereby driving the tool connected to the Z-axis driving mechanism to move back and forth in the X-axis direction.

[0027] 3. By providing two sets of first driving members and first screw rods, it is helpful to improve the stability of the first moving seat when it moves, thereby helping to improve the stability of the tool when it moves in the X-axis direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the multi-axis CNC machining center in the embodiment of the present application.

[0029] Figure 2 It is a structural schematic diagram of the multi-axis CNC machining center from another perspective in the embodiment of the present application.

[0030] Description of reference numerals: 1. Frame; 2. Base; 3. Tool; 4. Multi-axis driving device; 41. X-axis driving mechanism; 411. First driving motor; 412. First screw rod; 413. First moving seat; 42. Y-axis driving mechanism; 421. Second driving motor; 422. Second screw rod; 423. Second moving seat; 43. Z-axis driving mechanism; 431. Third driving motor; 432. Third screw rod; 433. Tool holder; 5. Spray pipe; 6. Support plate; 7. Drain hole; 8. Water collecting trough; 9. Water collecting tank. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-2 This application is described in further detail.

[0032] The present application embodiment discloses a multi-axis CNC machining center, referring to Figure 1 and Figure 2 , including a frame 1, a base 2 for fixing a workpiece is fixedly provided at the lower end of the frame 1, and the base 2 fixes the workpiece in a conventional clamping manner, which will not be described in detail here. A multi-axis driving device 4 for driving a tool 3 to move on the X-axis, Y-axis and Z-axis is provided at the upper end of the frame 1. Specifically, the multi-axis driving device 4 includes an X-axis driving mechanism 41, a Y-axis driving mechanism 42 and a Z-axis driving mechanism 43. The X-axis driving mechanism 41 is provided at the upper end of the frame 1 to drive the Y-axis driving mechanism 42 and the Z-axis driving mechanism 43 to reciprocate in the X-axis direction, the Y-axis driving mechanism 42 is provided on the X-axis driving mechanism 41 to drive the Z-axis driving mechanism 43 to reciprocate in the Y-axis direction, and the Z-axis driving mechanism 43 is provided on the Y-axis driving mechanism 42 to drive the tool 3 to reciprocate in the Z-axis direction. When the staff fixes the workpiece on the base 2, the tool 3 moves on the X-axis, Y-axis and Z-axis under the drive of the multi-axis drive device 4 to perform processing operations on the fixed workpiece, which is convenient and quick. When debugging operations are required, it is only necessary to debug the X-axis drive mechanism 41, the Y-axis drive mechanism 42 and the Z-axis drive mechanism 43 at one time, without the need for separate debugging multiple times, thereby facilitating debugging work and helping to improve production efficiency.

[0033] Reference Figure 1 and Figure 2The X-axis driving mechanism 41 includes a first driving member, a first screw rod 412 and a first moving seat 413. The first screw rod 412 is horizontally rotatably connected to the upper end of the frame 1. It should be noted that the length direction of the first screw rod 412 is the driving direction of the X-axis. The first driving member is arranged at the upper end of the frame 1 to drive the first screw rod 412 to reciprocate. In this embodiment, the first driving member is arranged as a first driving motor 411, which is horizontally fixed on the frame 1, and the first screw rod 412 is coaxially fixedly connected with the output shaft of the first driving motor 411. The first moving seat 413 is horizontally slidably connected to the upper end of the frame 1, and the first moving seat 413 is threadedly sleeved on the first screw rod 412. The Y-axis driving mechanism 42 and the Z-axis driving mechanism 43 are arranged on the first moving seat 413. The first drive motor 411 drives the first screw rod 412 to rotate, and the rotation of the first screw rod 412 drives the first movable seat 413 to move along the length direction of the first screw rod 412, and the first movable seat 413 drives the Y-axis drive mechanism 42 and the Z-axis drive mechanism 43 to move synchronously to realize driving the tool 3 to move in the X-axis direction.

[0034] Reference Figure 1 and Figure 2 There are two groups of first drive motors 411 and first screw rods 412, and the two groups of first drive motors 411 and first screw rods 412 are arranged on opposite sides of the Y-axis drive mechanism 42. The two first screw rods 412 are located on the same horizontal plane and are arranged in parallel. The two ends of the first movable seat 413 in the horizontal direction are respectively threaded on the two first screw rods 412, so that the two groups of first drive motors 411 and first screw rods 412 can drive the first movable seat 413 to move at the same time, so as to improve the stability of the first movable seat 413 when moving.

[0035] Reference Figure 1 and Figure 2The Y-axis driving mechanism 42 includes a second driving member, a second screw rod 422 and a second moving seat 423. The second screw rod 422 is horizontally rotatably connected to the first moving seat 413. It should be noted that the second screw rod 422 is vertically arranged with the first screw rod 412. The length direction of the second screw rod 422 is the driving direction of the Y-axis. The second driving member is arranged on the first moving seat 413 to drive the second screw rod 422 to reciprocate. In this embodiment, the second driving member is arranged as a second driving motor 421. The second driving motor 421 is horizontally fixed to the side wall of the first moving seat 413, and the second screw rod 422 is coaxially fixedly connected to the output shaft of the second driving motor 421. The second moving seat 423 is horizontally slidably connected to the side wall of the first moving seat 413, and the second moving seat 423 is threadedly sleeved on the second screw rod 422. The Z-axis driving mechanism 43 is arranged on the second moving seat 423. The second driving motor 421 drives the second screw rod 422 to rotate, and the rotation of the second screw rod 422 drives the second moving seat 423 to move along the length direction of the second screw rod 422, and the second moving seat 423 drives the Z-axis driving mechanism 43 to move synchronously to realize driving the tool 3 to move in the Y-axis direction.

[0036] Reference Figure 1 and Figure 2 The Z-axis driving mechanism 43 includes a third driving member, a third screw rod 432 and a knife seat 433. The third screw rod 432 is vertically rotatably connected to the second movable seat 423. It should be noted that the third screw rod 432 is vertically arranged to be perpendicular to the second screw rod 422 and the first screw rod 412. The length direction of the third screw rod 432 is the driving direction of the Z-axis. The third driving member is arranged on the second movable seat 423 to drive the third screw rod 432 to reciprocate. In this embodiment, the third driving member is set to a third driving motor 431, and the third driving motor 431 is vertically fixed to the side wall of the second movable seat 423, and the third screw rod 432 is coaxially fixedly connected to the output shaft of the third driving motor 431. The tool seat 433 is vertically slidably connected to the side wall of the second movable seat 423, and the tool seat 433 is threadedly sleeved on the third screw rod 432. The tool 3 is detachably connected to the bottom of the tool seat 433, and the tool 3 rotates at high speed during processing operations to drive the tool 3 to move in the Z-axis direction. The structure in which the tool 3 is detachably connected to the tool seat 433 is a conventional structure on a CNC machine tool and will not be elaborated here.

[0037] Reference Figure 1 and Figure 2 The side wall of the tool holder 433 is connected with a water spray pipe 5, and the end of the water spray pipe 5 faces the tool 3. When the tool 3 processes the workpiece, the water spray pipe 5 sprays cutting fluid to the position where the tool 3 cuts the workpiece, so as to reduce the temperature of the workpiece being cut, thereby facilitating improving the workpiece processing quality.

[0038] Reference Figure 1 and Figure 2 The lower end of the frame 1 is provided with a support plate 6 for supporting the base 2. The support plate 6 is horizontally fixed on the frame 1, and the base 2 is located in the middle of the support plate 6. At the same time, the support plate 6 is provided with a drain hole 7 around the base 2, so that the ejected cutting fluid can be discharged from the base 2 to avoid the cutting fluid from interfering with the machining operation of the workpiece. It is worth mentioning that the drain hole 7 is arranged in a funnel shape to facilitate drainage operation.

[0039] Reference Figure 1 and Figure 2 A water collecting trough 8 is provided at the bottom of the frame 1 below the support plate 6, and the vertical section of the water collecting trough 8 is in an inverted trapezoidal shape. The drainage trough receives the cutting fluid discharged from the drain hole 7 and continues to drain the cutting fluid, which is beneficial to prevent the cutting fluid from overflowing during the drainage process, thereby improving the production environment.

[0040] Reference Figure 1 and Figure 2 A water collecting box 9 is provided at the bottom of the frame 1 below the water collecting tank 8. The bottom of the water collecting tank 8 is open, and the upper end of the water collecting box 9 is open. The bottom of the water collecting tank 8 is connected to the water collecting box 9, so that the water discharged from the bottom of the water collecting tank 8 flows into the water collecting box 9 for collection. The staff can centrally process the discharged cutting fluid through the water collecting box 9. It should be noted that the water collecting box 9 can be detachably connected to the bottom of the frame 1 by pulling, so as to facilitate the staff to process the cutting fluid.

[0041] The implementation principle of a multi-axis CNC machining center in an embodiment of the present application is as follows: when a workpiece needs to be processed, the staff fixes the workpiece on the base 2, and the tool 3 rotates at high speed on the tool holder 433. The first drive motor 411 drives the first screw rod 412 to rotate, and the first screw rod 412 drives the first movable seat 413 to reciprocate in the X-axis direction. The second drive motor 421 drives the second screw rod 422 to rotate, and the second screw rod 422 drives the second movable seat 423 to reciprocate in the Y-axis direction. The third drive motor 431 drives the third screw rod 432 to rotate, and the third screw rod 432 drives the tool holder 433 to reciprocate in the Z-axis direction, thereby realizing the processing operation of the tool 3 on the workpiece. Multiple mobile drives are concentrated on the drive of the tool 3, which is convenient for the staff to perform debugging work, and the re-debugging time after accidents such as tool rolling and tool breaking is greatly reduced, which is conducive to improving production efficiency.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-axis CNC machining center, characterized in that: The invention comprises a frame (1), wherein a base (2) for fixing a workpiece is fixedly arranged at the lower end of the frame (1), and a multi-axis driving device (4) for driving a tool (3) to move on an X-axis, a Y-axis and a Z-axis is arranged at the upper end of the frame (1); the multi-axis driving device (4) comprises an X-axis driving mechanism (41), a Y-axis driving mechanism (42) and a Z-axis driving mechanism (43); the X-axis driving mechanism (41) is arranged at the upper end of the frame (1) and is used to drive the Y-axis driving mechanism (42) and the Z-axis driving mechanism (43) to reciprocate in the X-axis direction; the Y-axis driving mechanism (42) is arranged on the X-axis driving mechanism (41) and is used to drive the Z-axis driving mechanism (43) to reciprocate in the Y-axis direction; and the Z-axis driving mechanism (43) is arranged on the Y-axis driving mechanism (42) and is used to drive the tool (3) to reciprocate in the Z-axis direction.

2. A multi-axis CNC machining center according to claim 1, characterized in that: The X-axis driving mechanism (41) comprises a first driving member, a first screw rod (412) and a first moving seat (413); the first screw rod (412) is horizontally rotatably connected to the upper end of the frame (1); the first driving member is arranged at the upper end of the frame (1) and is used to drive the first screw rod (412) to reciprocate; the first moving seat (413) is horizontally slidably connected to the upper end of the frame (1), and the first moving seat (413) is threadedly sleeved on the first screw rod (412); the Y-axis driving mechanism (42) and the Z-axis driving mechanism (43) are arranged on the first moving seat (413).

3. A multi-axis CNC machining center according to claim 2, characterized in that: The first driving member and the first screw rod (412) are provided in two groups, and the two groups of the first driving member and the first screw rod (412) are respectively arranged on opposite sides of the Y-axis driving mechanism (42), and the two first screw rods (412) are located on the same horizontal plane and are arranged in parallel, and the two ends of the first movable seat (413) in the horizontal direction are respectively threadedly sleeved on the two first screw rods (412).

4. A multi-axis CNC machining center according to claim 2, characterized in that: The Y-axis driving mechanism (42) comprises a second driving member, a second screw rod (422) and a second movable seat (423); the second screw rod (422) is horizontally rotatably connected to the first movable seat (413); the second screw rod (422) is vertically arranged with the first screw rod (412); the second driving member is arranged on the first movable seat (413) for driving the second screw rod (422) to reciprocate; the second movable seat (423) is horizontally slidably connected to the side wall of the first movable seat (413); and the second movable seat (423) is threadedly sleeved on the second screw rod (422); and the Z-axis driving mechanism (43) is arranged on the second movable seat (423).

5. A multi-axis CNC machining center according to claim 4, characterized in that: The Z-axis driving mechanism (43) comprises a third driving member, a third screw rod (432) and a tool seat (433); the third screw rod (432) is vertically rotatably connected to the second movable seat (423); the third screw rod (432) and the second screw rod (422) and the first screw rod (412) are arranged perpendicular to each other; the third driving member is arranged on the second movable seat (423) to drive the third screw rod (432) to reciprocate; the tool seat (433) is vertically slidably connected to the side wall of the second movable seat (423), and the tool seat (433) is threadedly sleeved on the third screw rod (432); and the tool (3) is detachably connected to the bottom of the tool seat (433).

6. A multi-axis CNC machining center according to claim 5, characterized in that: A water spray pipe (5) is connected to the side wall of the knife seat (433), and the end of the water spray pipe (5) faces the knife (3).

7. The multi-axis CNC machining center according to claim 1, characterized in that: A support plate (6) for supporting the base (2) is provided at the lower end of the frame (1); the base (2) is located in the middle of the support plate (6); and a water discharge hole (7) is provided on the support plate (6) surrounding the base (2).

8. A multi-axis CNC machining center according to claim 7, characterized in that: The water discharge hole (7) is arranged in a funnel shape.

9. The multi-axis CNC machining center according to claim 7, characterized in that: A water collecting trough (8) is provided at the bottom of the frame (1) below the support plate (6), and the vertical cross-section of the water collecting trough (8) is in the shape of an inverted trapezoid.

10. A multi-axis CNC machining center according to claim 9, characterized in that: A water collecting box (9) is provided at the bottom of the frame (1) below the water collecting trough (8); the bottom of the water collecting trough (8) is open, the upper end of the water collecting box (9) is open, and the bottom of the water collecting trough (8) is in communication with the water collecting box (9).

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