Six-axis polyhedron machining center

Abstract

This utility model relates to the field of machining centers and discloses a six-axis multi-faceted machining center, including a base, a frame, a worktable, and a tool assembly. A rotary table assembly is mounted on the worktable, and the rotary table assembly includes a mounting base fixed to the worktable. A first drive assembly is mounted inside the mounting base. The first drive assembly has two first output ends, which are respectively located on both sides of the mounting base. Each of the two first output ends is equipped with a rotating arm assembly. The first output ends can drive the rotating arm assemblies to rotate. A second drive assembly is provided at the end of the rotating arm assembly. The second drive assembly has two second output ends, which are respectively located on both sides of the rotating arm assembly. The second output ends are connected to a rotary table for mounting workpieces. This machining center has the advantages of high machining efficiency, compact space design, and low cost.

Description

Technical Field

[0001] This utility model relates to the field of machining centers, and in particular to a six-axis polyhedral machining center. Background Technology

[0002] Existing conventional CNC milling machines can only machine one surface and its hole (cannot machine at arbitrary angles) in a single clamping condition, or perform three-axis milling of simple curved surfaces. If multiple surfaces need to be machined, not only are there many clamping times, but the machining accuracy, especially the geometrical accuracy, is not high, the process range is narrow, and the machining efficiency is low, which greatly limits the use of CNC milling.

[0003] Chinese patent publication number CN209998865U discloses a high-efficiency multi-faceted machining tool, which discloses a rotary table structure combined with multi-axis control to achieve 5-axis linkage. However, this solution can only process one workpiece at a time, resulting in low space utilization, and chip removal requires a separate design space and equipment. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a six-axis polyhedral machining center.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method: A six-axis polyhedral machining center includes a base, a frame, a worktable, and a tool assembly; A turntable assembly is mounted on the worktable. The turntable assembly includes a mounting base fixed on the worktable. A first drive assembly is installed inside the mounting base. The first drive assembly has two first output ends, which are respectively located on both sides of the mounting base. A rotating arm assembly is mounted on each of the two first output ends. The first output ends can drive the rotating arm assembly to rotate. A second drive assembly is provided at the end of the rotating arm assembly. The second drive assembly has two second output ends, which are respectively located on both sides of the rotating arm assembly. The second output ends are connected to a rotary table for mounting workpieces.

[0006] Preferably, the base is equipped with a Y-axis moving platform, and the worktable is mounted on the Y-axis moving platform and driven by it to move along the Y-axis direction. The frame is vertically mounted on the edge of the base, and an X-axis moving platform is mounted on its upper part; a Z-axis moving platform is mounted on the X-axis moving platform, and the Z-axis moving platform can move along the X-axis direction under the drive of the X-axis moving platform; the tool assembly is mounted on the Z-axis moving platform and is driven by it to move along the Z-axis.

[0007] Preferably, the axis of the first output terminal is in the X-axis direction, and the axis of the second output terminal is perpendicular to the axis of the first output terminal.

[0008] Preferably, both the first drive assembly and the second drive assembly are composite DD motor assemblies, which have two independently controlled DD motor units, each DD motor unit having an output terminal.

[0009] Preferably, the base is quadrilateral in shape, with inclined panels extending from the four sides of the base to form a chip discharge port in the middle area of ​​the base. The chip discharge port is located directly below the worktable, and the machining chips are guided by the inclined panels around the worktable to fall directly below the worktable.

[0010] Preferably, it also includes a support platform, which is set along the Y-axis direction. The Y-axis moving platform is installed on the support platform. It also includes transverse support ribs, which are arranged in a cross shape with the support platform. The two ends of the support ribs are located on two other inclined panels. The support platform, support ribs and base are interconnected and form an integral structure.

[0011] Preferably, the chip discharge port is a flared opening that is wider at the top and narrower at the bottom, and the cross-sectional shape of the support rib is a triangle that is narrower at the top and wider at the bottom.

[0012] Preferably, both the first output end and the second output end are flange-type structures, and the swing arm assembly and the rotary table are installed and connected to the corresponding first output end or second output end by bolts.

[0013] Preferably, the first output end is a first flange, which is connected to the output end of the DD motor. The first flange has pin grooves arranged radially, and the pin grooves are evenly arranged in the circumferential direction and are not interconnected. The part of the swing arm assembly near the first output end is provided with a connecting plate corresponding to the first flange. The connecting plate is provided with a locking hole. The pin groove is a T-shaped groove and also includes a locking pin. The cross-sectional shape of the locking pin corresponds to the locking groove, and the locking pin is provided with a fixing hole.

[0014] Compared with existing technologies, this solution offers the following advantages: This solution designs a 6-axis machining center capable of machining multiple workpieces from multiple angles and achieving multi-faceted machining. Furthermore, each axis is driven by a DD motor, providing advantages such as high control precision and ease of collaborative work. Moreover, DD motor technology is highly mature, facilitating future upgrades and maintenance. Additionally, the chip removal port is directly integrated with the base, achieving a spatially integrated design and providing a larger workspace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the machining center.

[0016] Figure 2 This is a schematic diagram of the overall structure of the first drive assembly, with the first flange hidden on one side.

[0017] Figure 3 yes Figure 2 A diagram showing the view from the opposite side.

[0018] Figure 4 This is a schematic diagram of the second drive assembly without the outer base and a turntable.

[0019] Figure 5 This is a schematic diagram of the base structure.

[0020] The technical names of the reference numerals in the figure are as follows: 1—Base, 2—Frame, 3—Worktable, 4—Tool assembly, 5—Turntable assembly, 6—First drive assembly, 7—Second drive assembly, 8—Rotating arm assembly, 9—X-axis moving platform, 10—Y-axis moving platform, 11—Z-axis moving platform, 12—First output end, 13—Second output end, 14—Slanted panel, 16—Chip discharge port, 17—Support platform, 18—Support rib, 19—First flange, 20—Locking groove, 21—Connecting plate, 22—Fixing hole, 23—Rotating table. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] Example 1 A six-axis multi-faceted machining center includes a base 1, a frame 2, a worktable 3, and a tool assembly 4; wherein the base 1 and the frame 2 are connected by fixing bolts, and the frame 2 is designed on the edge of the base 1 to leave sufficient machining space in the middle area of ​​the base 1.

[0023] Secondly, a turntable assembly 5 is installed on the worktable 3. The turntable assembly 5 is the core of the 6-axis system, with all 6 working axes located on it. The 6 axes referred to here represent 6 rotary axes. The turntable assembly 5 includes a mounting base fixed to the worktable 3. A first drive assembly 6 is installed inside the mounting base. The first drive assembly 6 has two first output ends 12, which rotate. The two first output ends 12 are located on opposite sides of the mounting base, and each of the two first output ends 12 is equipped with a rotating arm assembly 8. The first output ends 12 can drive the rotating arm assembly 8 to rotate. The two first output ends 12 are independently controlled, so the rotating arm assemblies 8 on both sides rotate independently.

[0024] In this embodiment, a second drive assembly 7 is provided at the end of the rotary arm assembly 8. The second drive assembly 7 has two second output ends 13, which are located on both sides of the rotary arm assembly 8. The second output ends 13 are connected to a rotary table 23 for mounting workpieces. The rotary table 23 is a loading platform for mounting workpieces. The linkage control of the first output end 12 and the second output end 13 of the rotary table 23 can realize the switching of any angle in spatial position. In conjunction with the cutting tool and the slide mechanism, multi-angle or multi-faceted machining can be realized.

[0025] Specifically in this embodiment, the base 1 is equipped with a Y-axis moving platform 10, and the worktable 3 is installed on the Y-axis moving platform 10 and is driven by it to move along the Y-axis direction. The frame 2 is vertically mounted on the edge of the base 1, and an X-axis moving platform 9 is installed on its upper part. A Z-axis moving platform 11 is installed on the X-axis moving platform 9, and the Z-axis moving platform 11 can move along the X-axis direction under the drive of the X-axis moving platform 9. The tool assembly 4 is installed on the Z-axis moving platform 11 and is driven by it to move along the Z-axis. The X-axis moving platform 9, Y-axis moving platform 10, and Z-axis moving platform 11 are all composed of a motor, a lead screw and nut pair, and a slide rail. The part to be moved is installed on the lead screw and nut pair, and the motor drives the lead screw to rotate, causing the part to be moved to slide along the slide rail.

[0026] In this embodiment, the axis of the first output terminal 12 is the X-axis direction, and the axis of the second output terminal 13 is perpendicular to the axis of the first output terminal 12.

[0027] Both the first drive assembly 6 and the second drive assembly 7 are composite DD motor assemblies, each with two independently controlled DD motor units, each with one output terminal. A DD motor, or Direct Drive Motor, is a mechanical device developed based on servo technology, widely used in industrial automation, precision positioning, and robotics. It replaces the traditional reducer structure with a direct drive method, directly connecting the load through a flange to eliminate backlash and vibration, and features low speed, high torque, low noise, low maintenance, and high response speed.

[0028] The base 1 is quadrilateral in shape, and the four sides of the base 1 extend with inclined panels 14 on the inside, thereby forming a chip discharge port 16 in the middle area of ​​the base 1. The chip discharge port 16 is located directly below the worktable 3, and the machining chips are guided by the inclined panels 14 around the worktable 3 to fall directly below the worktable 3.

[0029] Specifically, this embodiment also includes a support platform 17, which is arranged along the Y-axis. The Y-axis moving platform 10 is mounted on the support platform 17. It also includes transverse support ribs 18, which are arranged in a cross shape with the support platform 17. The two ends of the support ribs 18 are located on two other inclined panels 14. The support platform 17, support ribs 18, and base 1 are interconnected and form an integral structure. This structural design of the base 1 not only fulfills the normal support function of the base 1 but also enables chip removal, saving space.

[0030] Specifically, in this embodiment, the chip discharge port 16 is a flared opening that is larger at the top and smaller at the bottom, and the cross-sectional shape of the support rib 18 is a triangle that is smaller at the top and larger at the bottom.

[0031] This solution achieves multi-angle control of each mounting platform through the linkage of multiple DD motors, and at the same time, it combines the linkage of X, Y, and Z slides to achieve machining of different angles and surfaces.

[0032] Example 2 Compared with Example 1, this example has the following differences: the chip discharge port 16 is a flared opening that is larger at the top and smaller at the bottom, and the cross-sectional shape of the support rib 18 is a triangle that is smaller at the top and larger at the bottom.

[0033] Both the first output end 12 and the second output end 13 are flange-type structures. The swing arm assembly 8 and the rotary table 23 are installed and connected to the corresponding first output end 12 or second output end 13 by bolts. The first output end 12 is a first flange 19, which is connected to the output end of the DD motor. The first flange 19 has pin grooves arranged radially, and the pin grooves are evenly arranged in the circumferential direction and are not interconnected. The part of the swing arm assembly 8 near the first output end 12 is provided with a connecting plate 21 corresponding to the first flange 19. The connecting plate 21 is provided with a locking hole, and the pin groove is a T-shaped groove. It also includes a locking pin, the cross-sectional shape of which corresponds to the locking groove 20. The locking pin is provided with a fixing hole 22.

Claims

1. A six-axis polyhedron machining center, characterized by: Includes a base (1), a frame (2), a worktable (3), and a tool assembly (4); A turntable assembly (5) is installed on the workbench (3). The turntable assembly (5) includes a mounting base fixed on the workbench (3). A first drive assembly (6) is installed in the mounting base. The first drive assembly (6) has two first output ends (12). The two first output ends (12) are respectively located on both sides of the mounting base. A rotating arm assembly (8) is installed on both first output ends (12). The first output ends (12) can drive the rotating arm assembly (8) to rotate. A second drive assembly (7) is provided at the end of the rotating arm assembly (8). The second drive assembly (7) has two second output ends (13). The two second output ends (13) are respectively located on both sides of the rotating arm assembly (8). A rotary table (23) for installing workpieces is connected to the second output ends (13).

2. The hexa-axis polyhedron machining center according to claim 1, wherein: The base (1) is equipped with a Y-axis moving platform (10), and the worktable (3) is installed on the Y-axis moving platform (10) and driven by it to move along the Y-axis direction; The frame (2) is vertically set on the edge of the base (1), and an X-axis moving platform (9) is installed on its upper part; a Z-axis moving platform (11) is installed on the X-axis moving platform (9), and the Z-axis moving platform (11) can move along the X-axis direction under the drive of the X-axis moving platform (9); the tool assembly (4) is installed on the Z-axis moving platform (11) and is driven by it to move along the Z-axis.

3. The hexa-axis polyhedron machining center according to claim 1, wherein: The axis of the first output terminal (12) is in the X-axis direction, and the axis of the second output terminal (13) is perpendicular to the axis of the first output terminal (12).

4. The hexa-axis polyhedron machining center according to claim 1, wherein: The first drive assembly (6) and the second drive assembly (7) are both composite DD motor assemblies, which have two independently controlled DD motor units, each of which has an output terminal.

5. The hexa-axis polyhedron machining center according to claim 2, wherein: The base (1) is quadrilateral in shape. The four sides of the base (1) have inclined plates (14) extending on the inside, thus forming a chip discharge port (16) in the middle area of ​​the base (1). The chip discharge port (16) is located directly below the worktable (3). The machining chips are guided by the inclined plates (14) around the worktable (3) and fall directly below the worktable (3).

6. A six-axis polyhedron machining center according to claim 5, characterized in that: It also includes a support platform (17), which is set along the Y-axis. The Y-axis moving platform (10) is installed on the support platform (17). It also includes a transverse support rib (18), which is arranged in a cross shape with the support platform (17). The two ends of the support rib (18) are located on two other inclined panels (14). The support platform (17), the support rib (18) and the base (1) are connected to each other and are an integral structure.

7. A six-axis polyhedron machining center according to claim 6, characterized in that: The chip discharge port (16) is a flared opening that is larger at the top and smaller at the bottom, and the cross-sectional shape of the support rib (18) is a triangle that is smaller at the top and larger at the bottom.

8. The hexa-axis polyhedron machining center according to claim 1, wherein: Both the first output end (12) and the second output end (13) are flange-type structures. The rotating arm assembly (8) and the rotary table (23) are installed and connected to the corresponding first output end (12) or second output end (13) by bolts.

9. A six-axis polyhedron machining center according to claim 8, characterized in that: The first output end (12) is the first flange (19), which is connected to the output end of the DD motor. The first flange (19) has a pin groove along its radial direction. The pin grooves are evenly arranged along the circumference and are not connected to each other. The part of the swing arm assembly (8) near the first output end (12) is provided with a connecting plate (21) corresponding to the first flange (19). The connecting plate (21) is provided with a locking hole. The pin groove is a groove with a T-shaped cross section and also includes a locking pin. The cross-sectional shape of the locking pin corresponds to the locking groove (20). The locking pin is provided with a fixing hole (22).

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