A new five-axis tilting table machining center

Abstract

The utility model relates to a novel five -axis turnover plate type machining center, including pedestal, fixing device and processing device, fixing device includes first hollow rotating platform, second hollow rotating platform and third hollow rotating platform, and first hollow rotating platform, second hollow rotating platform and third hollow rotating platform set up on same axis, processing device includes saddle, stand, sliding seat, support seat, numerical control rotating platform and main shaft box, wherein, the transmission structure in first hollow rotating platform, the transmission structure in second hollow rotating platform and the transmission structure in third hollow rotating platform can all rotate around horizontal axis, thereby form the turnover shaft of work piece, the utility model has cancelled the large -scale rotary table below original stand and main shaft slide pillar structure, not only has promoted the swing speed and positioning accuracy, also is helpful to reduce the vibration in the motion process, thereby obtains higher surface processing quality, in addition, has cancelled main shaft slide pillar structure, will main shaft box directly fixed on support seat and numerical control rotating platform, formed short overhanging, high rigidity structure layout, effectively suppressed the chattering that may occur when heavy -duty cutting, promoted the stability and depth of cutting process, secondly, the stand no longer participates in the rotation movement, and the connection between it and the saddle can be designed to be more stable, further enhancing the rigidity of the entire tool side system.

Description

Technical Field

[0001] This utility model relates to the field of machining center technology, and in particular to a novel five-axis flip-plate machining center. Background Technology

[0002] Currently, five-axis machining centers on the market typically have the following structures:

[0003] The cradle turntable is equipped with three linear axes and a vertical spindle (or horizontal spindle).

[0004] A horizontal rotary table is used in conjunction with three linear axes and a main shaft that swings up and down (or swings left and right).

[0005] A table without a rotary table, three linear axes, and a spindle capable of swinging up, down, left, and right.

[0006] The tilting worktable can swing up and down (tilt), and it works with three linear axes and a spindle that can swing left and right.

[0007] Disadvantages of the background technology:

[0008] The cradle turntable structure involves clamping the workpiece onto its platform. The platform rotates with the workpiece and can also swing at an angle, achieving five-axis linkage with three linear axes. Because this structure requires the workpiece to not only rotate but also swing at an angle (tilting the workpiece), it is only suitable for machining small workpieces.

[0009] A horizontal rotary table structure features a horizontally positioned turntable that can rotate with the workpiece without requiring an angle of inclination. The spindle can swing up and down, and together with three linear axes, it achieves five-axis linkage. This structure is suitable for machining medium-sized workpieces, especially square or round ones, but it is less suitable for longer workpieces.

[0010] In this structure, the worktable does not participate in rotation or oscillation. The corner axis and oscillation axis are both on the main spindle. In other words, the main spindle can oscillate up, down, left, and right (i.e., the change of the main spindle direction has two corner axes). Combined with three linear axes, five-axis linkage is achieved. Since the workpiece does not participate in rotation or does not need to be tilted, this structure is more suitable for processing large workpieces, especially very long workpieces.

[0011] The workpiece is clamped on the worktable and swings up and down (tilts) with the worktable. Long strip workpieces can be processed. However, since the workpiece needs to be mounted on the worktable, only one large surface and the surrounding side of the workpiece can be processed. The other large surface cannot be processed in one go because it must cooperate with the worktable.

[0012] For elongated workpieces, existing five-axis machining centers are either unsuitable for elongated workpieces, or while they can be machined, the large size of the equipment results in high costs and a large footprint. Furthermore, all of the aforementioned five-axis machining centers share a common drawback: the workpiece must be clamped on the worktable, and the bottom surface of the workpiece cannot be machined during the machining process. The workpiece must be removed, flipped, and re-clamped using a different fixture to complete the machining. This not only increases fixture and labor costs, but also inevitably leads to a loss of accuracy during re-clamping, significantly impacting machining efficiency.

[0013] In summary, for a large number of long, strip-shaped workpieces, such as aircraft structural components, that require machining in all directions, how to complete the machining in one clamping operation, and further improve accuracy and efficiency, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0014] The technical solution of this utility model to solve the above-mentioned technical problems is to provide a novel five-axis flip-type machining center, including a base, a fixing device and a machining device. The fixing device includes a first hollow rotary table, a second hollow rotary table and a third hollow rotary table. The first hollow rotary table is fixed on the base, and the second hollow rotary table and the third hollow rotary table are movably arranged on the base along the length direction of the base, and the first hollow rotary table, the second hollow rotary table and the third hollow rotary table are arranged on the same axis.

[0015] The machining device includes a saddle, a column, a slide, a support base, a CNC rotary table, and a spindle box. The saddle is movably mounted on the base along its length. The column is movably mounted on the saddle above it along its width. The slide is movably mounted on the column in a direction perpendicular to the base. The CNC rotary table is rotatably mounted on the slide (swinging left and right ±15 degrees). The spindle box is fixed to the CNC rotary table via the support base.

[0016] The transmission structures in the first hollow turntable, the second hollow turntable, and the third hollow turntable can all rotate around a horizontal axis, thereby forming a workpiece flipping axis.

[0017] Furthermore, the movement of the saddle along the length of the base, the movement of the column above the saddle along the width of the base, and the movement of the slide are respectively driven by a motor and a lead screw mechanism.

[0018] Furthermore, the rotation of the transmission structure in the first hollow turntable, the transmission structure in the second hollow turntable, and the transmission structure in the third hollow turntable are respectively driven by motors.

[0019] Furthermore, the movement of the second and third hollow turntables along the length of the base is driven by a motor and a lead screw mechanism, respectively.

[0020] Compared with the prior art, the horizontal five-axis flip machining center provided by this utility model has the following significant advantages:

[0021] 1. By employing three independent hollow rotary tables to form the workpiece rotation axis, the traditional single large integral rotary table is replaced, significantly reducing the load mass required to drive each rotary table. This "divide and conquer" structure effectively reduces the moment of inertia of rotational motion, making the start, stop, and reversal of the workpiece rotation axis faster and more agile, thereby significantly improving the dynamic response performance of the machining center and laying the foundation for high-speed and high-efficiency machining.

[0022] 2. The tableless structure allows the workpiece to pass through the hollow turntable and be clamped before being processed directly. Both sides of the workpiece can be processed in one clamping, which greatly simplifies the process and improves efficiency.

[0023] 3. This invention creatively eliminates the large rotary table and spindle slide structure located beneath the original column. Instead, a small CNC rotary table is integrated onto the slide, driving the spindle box to achieve ±15° oscillation, sufficient to meet the requirements of machining similar aircraft structural components. This design makes the total mass and volume of the oscillating components (CNC rotary table, support base, spindle box) significantly smaller than the column requiring overall oscillation in traditional structures, greatly reducing the moment of inertia. This not only improves oscillation speed and positioning accuracy but also helps reduce vibration during movement, thereby achieving higher surface finish.

[0024] 4. Enhanced overall rigidity and stability: First, the spindle slide structure has been eliminated, and the spindle box is directly fixed to the support base and CNC rotary table, forming a short overhang, high-rigidity structural layout. This effectively suppresses chatter that may occur during heavy cutting, improving the stability and depth of cut. Second, the column itself no longer participates in rotational motion, allowing for a more robust connection between it and the saddle, further enhancing the rigidity of the entire tool-side system. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1This is a front structural diagram of the novel five-axis flip-plate machining center described in this utility model;

[0027] Figure 2 This is a schematic diagram of the back structure of the novel five-axis flip-plate machining center described in this utility model.

[0028] Explanation of icon numbers:

[0029] 1. Fixing device; 11. First hollow rotary table; 12. Second hollow rotary table; 13. Third hollow rotary table; 2. Machining device; 21. Saddle; 22. Column; 23. Slide; 24. Support seat; 25. CNC rotary table; 26. Spindle box; 3. Base. Detailed Implementation

[0030] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "several" or "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] This utility model proposes a novel five-axis flip-plate machining center, aiming to design a new type of horizontal five-axis machining center.

[0036] The novel five-axis flip-plate machining center proposed in this utility model will be described below in specific embodiments:

[0037] In the technical solution of this embodiment, a novel five-axis flip-plate machining center, such as... Figure 1 , Figure 2 The device includes a base 3, a fixing device 1, and a processing device 2. The fixing device 1 includes a first hollow turntable 11, a second hollow turntable 12, and a third hollow turntable 13. The first hollow turntable 11 is fixed on the base 3. The second hollow turntable 12 and the third hollow turntable 13 are movably arranged on the base 3 along the length direction of the base 3, and the first hollow turntable 11, the second hollow turntable 12, and the third hollow turntable 13 are arranged on the same axis.

[0038] The machining device 2 includes a saddle 21, a column 22, a slide 23, a support base 24, a CNC rotary table 25, and a spindle box 26. The saddle 21 is movably mounted on the base 3 along the length direction of the base 3; the column 22 is movably mounted on the saddle 21 along the width direction of the base 3; the slide 23 is movably mounted on the column 22 along the direction perpendicular to the base 3; the CNC rotary table 25 is rotatably mounted on the slide 23 (swinging left and right ±15 degrees); and the spindle box 26 is fixed on the CNC rotary table 25 through the support base 24.

[0039] The transmission structures in the first hollow turntable 11, the second hollow turntable 12, and the third hollow turntable 13 can all rotate around a horizontal axis, thereby forming a workpiece flipping axis.

[0040] Furthermore, the movement of the saddle 21 along the length of the base 3, the movement of the column 22 along the width of the base 3, and the movement of the slide 23 are driven by a motor and a lead screw mechanism, respectively.

[0041] Furthermore, the rotation of the transmission structure in the first hollow turntable 11, the transmission structure in the second hollow turntable 12, and the transmission structure in the third hollow turntable 13 are respectively driven by motors.

[0042] Furthermore, the movement of the second hollow turntable 12 and the third hollow turntable 13 along the length of the base 3 is driven by a motor and a lead screw mechanism, respectively.

[0043] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A novel five-axis flip-plate machining center, comprising a base, a fixing device, and a machining device, characterized in that: The fixing device includes a first hollow turntable, a second hollow turntable and a third hollow turntable. The first hollow turntable is fixed on the base, and the second hollow turntable and the third hollow turntable are movably arranged on the base along the length direction of the base, and the first hollow turntable, the second hollow turntable and the third hollow turntable are arranged on the same axis. The processing device includes a saddle, a column, a slide, a support base, a CNC rotary table, and a spindle box. The saddle is movably mounted on the base along its length; the column is movably mounted on the saddle along its width; the slide is movably mounted on the column in a direction perpendicular to the base; the CNC rotary table is rotatably mounted on the slide, and the spindle box is fixed on the CNC rotary table via the support base. The transmission structures in the first hollow turntable, the second hollow turntable, and the third hollow turntable can all rotate around a horizontal axis, thereby forming a workpiece flipping axis.

2. The novel five-axis flip-plate machining center according to claim 1, characterized in that: The movement of the saddle along the length of the base, the movement of the column above the saddle along the width of the base, and the movement of the slide are respectively driven by a motor and a lead screw mechanism.

3. The novel five-axis flip-plate machining center according to claim 1, characterized in that: The rotation of the transmission structure in the first hollow turntable, the transmission structure in the second hollow turntable, and the transmission structure in the third hollow turntable are driven by independent motors.

4. The novel five-axis flip-plate machining center according to claim 1, characterized in that: The second and third hollow turntables are driven by a motor and a lead screw mechanism, respectively, along the length of the base.

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