Four-axis swing head mechanism and numerical control machine tool

Abstract

This utility model discloses a four-axis swivel head mechanism and a CNC machine tool, including a slide, a four-axis rotary table, a booster cylinder assembly, a spindle box, and an electric spindle mounted on the spindle box; the four-axis rotary table and the booster cylinder assembly are respectively disposed at both axial ends of the slide, and the spindle box is rotatably mounted on the four-axis rotary table; the booster cylinder assembly includes a first booster cylinder and a second booster cylinder, the first booster cylinder and the second booster cylinder are respectively used to drive the four-axis rotary table and the electric spindle, thus replacing the AC swivel head, effectively reducing the overall machine cost, and meeting the five-axis machining requirements.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a four-axis tilting head mechanism and a CNC machine tool. Background Technology

[0002] Currently, most machining centers use three-axis machining, which cannot meet customers' needs for workpiece clamping in one go. If an AC swing head is added, five-axis machining can be achieved, but this results in high overall machine cost and cannot be used for workpieces with low precision requirements and low unit price. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a four-axis swivel head mechanism and a CNC machine tool that can replace the AC swivel head, effectively reduce the overall machine cost, and simultaneously meet the requirements of five-axis machining.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model provides a four-axis oscillating head mechanism, including a slide, a four-axis rotary table, a booster cylinder assembly, a spindle box, and an electric spindle mounted on the spindle box; the four-axis rotary table and the booster cylinder assembly are respectively disposed at both axial ends of the slide, and the spindle box is rotatably mounted on the four-axis rotary table; the booster cylinder assembly includes a first booster cylinder and a second booster cylinder, the first booster cylinder and the second booster cylinder being used to drive the four-axis rotary table and the electric spindle, respectively.

[0006] Furthermore, the four-axis rotary table includes a servo motor, a transmission assembly, and a four-axis indexing plate. The servo motor is mounted on the slide block and is driven by the transmission assembly to rotate the four-axis indexing plate. The spindle box is fixedly connected to the four-axis indexing plate.

[0007] Furthermore, the four-axis indexing plate is provided with a plurality of spaced limiting grooves on the side facing the spindle box, and each limiting groove is equipped with a corresponding limiting block; the limiting block is fixedly connected to the spindle box so that the four-axis indexing plate and the spindle box are arranged to rotate synchronously.

[0008] Furthermore, the limiting groove is a T-shaped groove with openings on both sides, and the limiting block is T-shaped; the limiting block is detachably inserted into the corresponding limiting groove; a detachable fastener is provided between the spindle box and the limiting block, the fastener passes through the spindle box and is fastened to the limiting block.

[0009] Furthermore, the fastener is a screw or bolt.

[0010] Furthermore, multiple limiting grooves are provided on the central axis of the four-axis indexing plate.

[0011] Furthermore, the slide block is provided with a mounting groove for mounting the four-axis rotary table.

[0012] This utility model provides a CNC machine tool, which includes at least the aforementioned four-axis tilting head mechanism.

[0013] The technical solution provided by this utility model has the following beneficial effects:

[0014] By rotatably mounting the spindle box onto the four-axis rotary table, the electric spindle is driven to rotate accordingly, thereby realizing the swing machining of the workpiece. This allows the workpiece to be machined at different angles and directions, effectively solving the workpiece clamping problem and reducing secondary clamping time. This can replace the AC swing head, effectively reduce the overall machine cost, and meet the five-axis machining requirements. Attached Figure Description

[0015] Figure 1 The diagram shown is a structural schematic of the four-axis oscillating head mechanism in Embodiment 1;

[0016] Figure 2 As shown Figure 1 Enlarged view of area A in the middle;

[0017] Figure 3 The diagram shown is a schematic of the four-axis rotary table in Embodiment 1;

[0018] Figure 4 The diagram shown is a schematic of the limiting block in Embodiment 1;

[0019] Figure 5 The diagram shown is a schematic of the slide block in Embodiment 1. Detailed Implementation

[0020] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] Reference Figures 1 to 5 Example 1 provides a four-axis swivel head mechanism, which is mounted on the slide of a CNC machine tool, thus enabling five-axis machining.

[0024] like Figure 1 As shown, the four-axis oscillating head mechanism in this embodiment includes a four-axis turntable 2, a booster cylinder group 3, a spindle box 4, and so on. Figure 5 The square slide 1 shown, the electric spindle 5 mounted on the spindle box 4, the four-axis rotary table 2 and the booster cylinder group 3 are respectively set at both ends of the axial (i.e., the long direction) of the slide 1, and the spindle box 4 is rotatably mounted on the four-axis rotary table 2.

[0025] The booster cylinder group 3 includes a first booster cylinder 31 and a second booster cylinder 32, which are used to drive the four-axis rotary table 2 and the electric spindle 5, respectively.

[0026] In this embodiment, the slide block 1 is provided with a mounting groove 11 for mounting the four-axis rotary table 2, and the four-axis rotary table 2 is mounted in the mounting groove 11.

[0027] More specifically, such as Figure 3 As shown, the four-axis rotary table 2 includes a servo motor 21, a transmission assembly, and a four-axis indexing plate 22. The servo motor 21 is mounted in the mounting slot 11 of the slide block 1. The servo motor 21 drives the four-axis indexing plate 22 through the transmission assembly to drive the four-axis indexing plate 22 to rotate, and drive the spindle box 4 and the electric spindle 5 to rotate together, thus realizing the swing machining.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the four-axis indexing plate 22 has eight spaced limiting grooves 221 on the upper side facing the spindle box 4. The eight limiting grooves 221 are arranged around the central axis of the four-axis indexing plate 22, and each limiting groove 221 is equipped with a corresponding limiting block 222.

[0029] The limiting block 222 is fixedly connected to the spindle box 4 by fasteners (such as screws or bolts) to fix the spindle box 4 to the four-axis indexing plate 22 and make the four-axis indexing plate 22 and the spindle box 4 rotate synchronously.

[0030] By rotatably mounting the spindle box 4 onto the four-axis rotary table 2, the electric spindle 5 is driven to rotate accordingly, thereby realizing the swing machining of the workpiece. This allows the workpiece to be machined at different angles and directions, effectively solving the workpiece clamping problem and reducing the time for secondary clamping. This can replace the AC swing head, effectively reduce the overall machine cost, and meet the five-axis machining requirements.

[0031] Of course, in other embodiments, the number of limiting slots 221 may also be 4, 6 or other.

[0032] In a further preferred embodiment, eight limiting grooves 221 are evenly spaced and arranged around the central axis of the four-axis indexing plate 22 to ensure uniform force distribution.

[0033] In another preferred embodiment, the limiting groove 221 is a T-shaped groove with openings on both sides, the openings being an upper opening and a circumferential opening, respectively, and the limiting block 222 is T-shaped.

[0034] The limiting block 222 is detachably inserted into the corresponding limiting groove 221. The spindle box 4 and the limiting block 222 are fixedly connected by a detachable fastener, that is, the fastener passes through the spindle box 4 and is fastened to the limiting block 222.

[0035] In this specific embodiment, such as Figure 1 and Figure 2 As shown, the spindle box 4 has 8 mounting holes 41, and each limiting groove 221 extends unidirectionally to the circumferential surface of the four-axis indexing plate 22 and the upper surface away from the slide block 1.

[0036] When it is necessary to assemble the spindle box 4 on the four-axis rotary table 2, first insert the limit blocks 222 one by one into the corresponding limit grooves 221 through the circumferential openings of the limit grooves 221. Then, align the mounting holes 41 of the spindle box 4 with the electric spindle 5 with the screw holes of the limit blocks 222. Then, insert the fasteners from the mounting holes 41, pass through the upper opening of the limit grooves 221, and then screw them into the screw holes of the limit blocks 222 to complete the fixing of the spindle box 4 with the electric spindle 5 on the four-axis rotary table 2.

[0037] Example 2

[0038] Embodiment 2 provides a CNC machine tool, which includes at least the four-axis tilting head mechanism of Embodiment 1.

[0039] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A four-axis oscillating head mechanism, characterized in that: It includes a slide block, a four-axis rotary table, a booster cylinder group, a spindle box, and an electric spindle assembled in the spindle box; The four-axis rotary table and the booster cylinder assembly are respectively disposed at both ends of the slide block, and the spindle box is rotatably mounted on the four-axis rotary table; The booster cylinder assembly includes a first booster cylinder and a second booster cylinder, which are used to drive the four-axis rotary table and the electric spindle, respectively.

2. The four-axis oscillating head mechanism according to claim 1, characterized in that: The four-axis rotary table includes a servo motor, a transmission assembly, and a four-axis indexing plate. The servo motor is mounted on the slide block and is driven by the transmission assembly to rotate the four-axis indexing plate. The spindle box is fixedly connected to the four-axis indexing plate.

3. The four-axis oscillating head mechanism according to claim 2, characterized in that: The four-axis indexing plate has multiple spaced limiting grooves on the side facing the spindle box, and each limiting groove is equipped with a corresponding limiting block; the limiting block is fixedly connected to the spindle box so that the four-axis indexing plate and the spindle box rotate synchronously.

4. The four-axis oscillating head mechanism according to claim 3, characterized in that: The limiting groove is a T-shaped groove with openings on both sides, and the limiting block is T-shaped; the limiting block is detachably inserted into the corresponding limiting groove; a detachable fastener is provided between the spindle box and the limiting block, the fastener passes through the spindle box and is fastened to the limiting block.

5. The four-axis oscillating head mechanism according to claim 4, characterized in that: The fastener is a screw or bolt.

6. The four-axis oscillating head mechanism according to any one of claims 3-5, characterized in that: Multiple limiting groove rings are provided on the central axis of the four-axis indexing plate.

7. The four-axis oscillating head mechanism according to any one of claims 1-5, characterized in that: The slide is provided with a mounting groove for mounting the four-axis turntable.

8. A CNC machine tool, characterized in that: It includes at least the four-axis oscillating head mechanism as described in any one of claims 1-7.

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