Rotary swing head structure of five-axis linkage machining equipment

Abstract

The invention relates to the field of processing machine tools, in particular to a rotary swing head structure of five-axis linkage processing equipment, which comprises a spindle seat, a DD (direct drive) motor, a spindle box and a spindle, a rotary shaft mounting hole is arranged at the lower part of the spindle seat, the DD motor is fixed in the rotary shaft mounting hole and comprises a rotary shaft, and the spindle box is fixedly connected with the rotary shaft. The main shaft is arranged on the main shaft box, the torque servo DD direct-drive motor is additionally arranged between the main shaft base and the main shaft, so that the main shaft completes L-shaped right-angle reversing on the main shaft base of an original vertical structure, and then the main shaft can rotate by 360 degrees through the DD direct-drive motor, so that the main shaft can rotate by any angle; therefore, the main shaft can achieve vertical machining in a vertical state and horizontal machining in a horizontal state, interpolation machining at any angle can be achieved, the flexibility of the machine head is improved, and the use performance and the machining efficiency of five-axis linkage machining equipment are improved.

Description

Technical Field

[0001] The present invention relates to the field of machining tools, and particularly to a rotary swing head structure of a five-axis linkage machining device. Background Art

[0002] With the development of industry, five-axis linkage machining centers are widely used due to their own flexibility and precision. A five-axis linkage machining center is an automated machine tool equipped with a program control system, mainly composed of mechanical equipment and a numerical control system. It is equipped with an automatic tool magazine and has an automatic tool change function, enabling continuous processing of multiple processes after a workpiece is clamped once, and can complete processing operations such as drilling, boring, milling, reaming, and tapping.

[0003] Most of the existing five-axis machining centers on the market are three-axis machining centers that achieve five-axis linkage machining by additionally installing a two-axis cradle structure on the workbench. However, the cradle structure is an on-axis design, which is prone to axial clearance and displacement accuracy deviation during reciprocating motion, and the rotation passability is limited, and workpieces with larger sizes cannot pass through. Moreover, heavier workpieces are prone to positioning errors during reciprocating motion due to the principle of inertia.

[0004] Therefore, in view of the above problems, the present invention is proposed to fill this defect. Summary of the Invention

[0005] The purpose of the present invention is to provide a rotary swing head structure of a five-axis linkage machining device in view of the deficiencies of the prior art. Its structure is scientific. By adding a DD direct drive motor between the spindle seat and the spindle, the spindle can complete an L-shaped right-angle commutation on the spindle seat with the original vertical structure, and then the spindle can rotate 360° through the DD direct drive motor, enabling the spindle to rotate at any angle, so that the spindle can realize vertical machining in the vertical state and horizontal machining in the horizontal state, and can also realize interpolation machining at any angle, increasing the flexibility of the machine head and improving the service performance and machining efficiency of the five-axis linkage machining device.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A rotary swing head structure of a five-axis linkage machining device includes: a spindle seat, a DD direct drive motor, a spindle box, and a spindle. The spindle seat is of a T-shaped structure, a rotating shaft installation hole is provided at the lower part of the spindle seat, the DD direct drive motor is fixed inside the rotating shaft installation hole, the DD direct drive motor includes a rotating shaft, the spindle box is fixedly connected to the rotating shaft, and the spindle is arranged on the spindle box.

[0008] Preferably, the rotating shaft on the DD direct drive motor and the main view installation surface of the spindle seat are in a vertically intersecting structure, and the rotating shaft intersects with the spindle seat

[0009] It is a torque servo motor, and the DD direct drive motor is internally provided with a hydraulic brake and a high-resolution encoder.

[0010] Preferably, the spindle box is a side-mounted T-shaped structure. There is a through cylindrical structure between two symmetric sides of the spindle box. The spindle is embedded inside the through cylindrical structure on the spindle box, and the independent surface of the spindle box is fixedly connected to the rotating shaft of the DD direct drive motor.

[0011] Preferably, the rotation angle of the rotating shaft on the DD direct drive motor is 0° to 360°, and the spindle and the spindle box are synchronously rotated 0° to 360° by the drive of the DD direct drive motor.

[0012] Compared with the prior art, the present invention provides a rotary swivel head structure of a five-axis linkage machining device, having the following beneficial effects:

[0013] 1. By adding a DD direct drive motor between the spindle base and the spindle, the present invention enables the spindle to complete an L-shaped right-angle commutation on the spindle base with the original vertical structure, and then the spindle can be rotated 360° through the DD direct drive motor, so that the spindle can realize arbitrary-angle rotation, thereby enabling the spindle to perform vertical machining in the vertical state and horizontal machining in the horizontal state, and can also realize interpolation machining at any angle, increasing the flexibility of the machine head and improving the use performance and machining efficiency of the five-axis linkage machining device.

[0014] 2. By adding a DD direct drive motor between the spindle base and the spindle, the present invention enables the spindle to be connected to the DD direct drive motor through the spindle box, and then the DD direct drive motor is connected to the spindle base. The multi-mechanism combination method reduces the problem that the current integral spindle swivel head is prone to heat up and reduces the influence of the spindle thermal elongation phenomenon. While improving the flexibility of the spindle, the machining accuracy is greatly improved. Description of the Drawings

[0015] Figure 1 is the overall structure schematic diagram of the present invention;

[0016] Figure 2 is the schematic diagram of the exploded structure of the present invention;

[0017] Figure 3 is the schematic diagram of the DD direct drive motor part of the present invention;

[0018] Figure 4 is the schematic diagram of the first embodiment of the present invention;

[0019] Figure 5 is the schematic diagram of the second embodiment of the present invention;

[0020] Figure 6 is the schematic diagram of the third embodiment of the present invention. Detailed Embodiments

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or / several" used herein includes any and all combinations of one or more of the related listed items.

[0023] As Figures 1-3 shown, a rotating swing head structure of a five-axis linkage processing device of the present invention includes: a spindle base 1, a DD direct drive motor 2, a spindle box 3, and a spindle 4. The spindle base 1 is a T-shaped structure, and a rotating shaft mounting hole 10 is provided at the lower part of the spindle base 1. The DD direct drive motor 2 is fixed inside the rotating shaft mounting hole 10. The DD direct drive motor 2 includes a rotating shaft 20. The spindle box 3 is fixedly connected to the rotating shaft 20, and the spindle 4 is arranged on the spindle box 3.

[0024] The rotating shaft 20 on the DD direct drive motor 2 and the main viewing mounting surface of the spindle base 1 form a vertical intersection structure. The rotating shaft 20 and the spindle base 1 intersect to form an L-shaped structure. By adding a DD direct drive motor between the spindle base and the spindle, the spindle completes an L-shaped right-angle commutation on the spindle base with the original vertical structure. Then, through the DD direct drive motor, it can rotate 360°, enabling the spindle to rotate at any angle. Thus, the spindle can achieve vertical machining in the vertical state and horizontal machining in the horizontal state, and can also achieve interpolation machining at any angle, increasing the flexibility of the machine head and improving the use performance and machining efficiency of the five-axis linkage processing device.

[0025] The DD direct drive motor 2 is a torque servo motor, featuring a large output torque. The DD direct drive motor 2 is internally provided with a hydraulic brake device 21 and a high-resolution encoder 22. The DD direct drive motor is also equipped with a high-resolution encoder, so it has high precision. And by adopting a direct drive method, compared with the conventional lead screw nut drive, gear rack drive, and synchronous belt drive methods, the error caused by the mechanical structure is reduced, ensuring the machining accuracy.

[0026] The main spindle box 3 has a side-mounted T-shaped structure. There is a through cylindrical structure between the two symmetrical sides of the main spindle box 3. The main spindle 4 is embedded inside the through cylindrical structure on the main spindle box 3. The independent surface of the main spindle box 3 is fixedly connected to the rotating shaft of the DD direct drive motor. The main spindle 4 is embedded on the main spindle box 3 and driven by the DD direct drive motor 2. The combination of multiple mechanisms reduces the problem that the current integrated main spindle swing head is prone to heat up and reduces the influence of the main spindle thermal elongation phenomenon. While improving the flexibility of the main spindle, the machining accuracy is greatly improved.

[0027] The rotation angle of the rotating shaft 20 on the DD direct drive motor 2 is 0° to 360°. The main spindle 4 and the main spindle box 3 are driven by the DD direct drive motor 2 to rotate synchronously by 0° to 360°. As Figure 4 shown, when the main spindle 4 is driven by the DD direct drive motor 2 to be in the vertical position, vertical machining is realized from the top of the workpiece; as Figure 5 shown, when the main spindle 4 is driven by the DD direct drive motor 2 to be in the horizontal position, horizontal machining is realized from the side of the workpiece; as Figure 6 shown, the main spindle 4 can also be driven by the DD direct drive motor 2 to rotate to any other angle. After the main spindle 4 probes to the lower side of the workpiece, the tool on the main spindle 4 rotates to the upward mode, and the interpolation machining of the bottom surface of the workpiece can be completed.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary swing head structure of a five-axis linkage machining device, comprising: Spindle seat (1), DD direct drive motor (2), spindle box (3), spindle (4), characterized in that: the spindle seat (1) is of a T-shaped structure, a rotating shaft mounting hole (10) is provided at the lower part of the spindle seat (1), the DD direct drive motor (2) is fixed inside the rotating shaft mounting hole (10), the DD direct drive motor (2) includes a rotating shaft (20), the spindle box (3) is fixedly connected to the rotating shaft (20), and the spindle (4) is arranged on the spindle box (3).

2. The rotary swing head structure of a five-axis linkage machining device according to claim 1, characterized in that: The rotating shaft (20) on the DD direct drive motor (2) and the mounting surface in the front view direction of the spindle seat (1) are of a vertically intersecting structure, and the rotating shaft (20) and the spindle seat (1) intersect to form an L-shaped structure.

3. The rotating swing head structure of a five-axis linkage machining device according to claim 1, characterized in that: The DD direct drive motor (2) is a torque servo motor, and the DD direct drive motor (2) is internally provided with a hydraulic brake (21) and a high-resolution encoder (22).

4. The rotary swing head structure of a five-axis linkage machining device according to claim 1, characterized in that: The spindle box (3) is of a side-mounted T-shaped structure, and the structure between the two symmetric sides of the spindle box (3) is a through cylindrical structure. The spindle (4) is embedded inside the through cylindrical structure on the spindle box (3), and the independent surface of the spindle box (3) is fixedly connected to the rotating shaft (20) of the DD direct drive motor (2).

5. The rotating swing head structure of a five-axis linkage machining device according to claim 1, characterized in that: The rotation angle of the rotating shaft (20) on the DD direct drive motor (2) is 0° to 360°, and the spindle (4) and the spindle box (3) are synchronously driven by the DD direct drive motor (2) to rotate 0° to 360°.

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