Five-axis polyhedron multi-piece machining tool

Abstract

The invention provides a five-axis polyhedron multi-piece machining tool, and relates to the technical field of tool structures. The bottom plate is used for mounting the base on a rack; at least two self-centering vises are arranged on the base; the magnetic attraction positioner is suitable for being detachably connected to the self-centering jaw vice in a magnetic attraction mode and comprises a positioning rod, the positioning rod is adjustably installed on the magnetic attraction positioner, and the magnetic attraction positioner is suitable for positioning a workpiece to the corresponding position of the self-centering jaw vice through the positioning rod. And the self-centering jaw vice can be switched and connected on each self-centering jaw vice under the disassembly and assembly of a user, so that a workpiece on each self-centering jaw vice can be positioned. Through the scheme, the clamping efficiency is improved, and the positioning precision is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of tooling structures, and more particularly, to a five-axis polyhedron multi-piece machining tooling. Background Art

[0002] During the machining process of existing five-axis machine tools, five-axis machine tools are mostly used for machining polyhedron workpieces, but usually only single-piece machining can be carried out, and collisions with positioning devices are likely to occur during the machining process. In addition, existing five-axis machine tools generally adopt ordinary vise structures. In the machining of polyhedron workpieces, especially in five-axis machine tools, there is no workpiece blank positioning piece for the workpiece blank, and the workpiece blank cannot be positioned, resulting in large clamping position errors. It is necessary to increase the blank size for machining, which limits the machining efficiency and accuracy of five-axis machine tools. If the workpiece positioning device of the existing two-axis machining tooling is used, since the workpiece positioning device is fixed on the machine tool, collisions are likely to occur and it is not practical. Therefore, if quick die change is to be achieved, a zero-point positioning device for the vise is required, which is too costly and slow in efficiency. Summary of the Invention

[0003] The present invention discloses a five-axis polyhedron multi-piece machining tooling, which realizes the quick switching connection of the positioning device between different vise structures through a magnetic adsorption positioner, so as to achieve the quick positioning of multiple workpieces, reduce the machining preparation time and improve the machining accuracy.

[0004] The present invention adopts the following scheme:

[0005] A five-axis polyhedron multi-piece machining tooling, comprising:

[0006] A bottom plate for mounting the base on the machine frame;

[0007] A base, on which at least two self-centering vises are provided;

[0008] A magnetic adsorption positioner, which is detachably connected to the self-centering vise by magnetic adsorption. It includes a positioning rod, and the positioning rod is adjustably installed on the magnetic adsorption positioner. The magnetic adsorption positioner is adapted to position the workpiece at the corresponding position of the self-centering vise through the positioning rod, and is convenient for switching and connecting on each self-centering vise under the disassembly and assembly of the user.

[0009] Further, the self-centering vise is inclined on the base.

[0010] Further, three self-centering vises are provided, and the three self-centering vises are evenly distributed around the circumference.

[0011] Further, the magnetic adsorption positioner includes a magnetic adsorption base and a support block connected to the magnetic adsorption base, and the positioning rod is connected to the support block.

[0012] Further, the positioning rod is locked on the support block by a locking screw.

[0013] Further, the self-centering vise includes two movable clamping blocks, a clamping groove adapted to clamp a workpiece is formed between the two movable clamping blocks, and the positioning rod is adapted to extend into the clamping groove.

[0014] Further, a standard mounting surface is provided on the magnetic base, a positioning surface adapted to cooperate with the standard mounting surface is provided on the self-centering vise, and the standard mounting surface is adapted to be attached to the positioning surface so that the positioning rod is parallel to the length extension direction of the clamping groove.

[0015] Further, the self-centering vise is detachably mounted on the base.

[0016] Further, a clearance portion is provided on the base between adjacent self-centering vises.

[0017] Further, a plurality of bolt holes are provided on the bottom plate for adapting to various specifications of the machine frame.

[0018] Advantageous effects:

[0019] 1. In this solution, by setting a magnetic positioner, the position where the workpiece is clamped on the self-centering vise can be positioned by the positioning rod. And since the magnetic positioning device is convenient for disassembly and assembly, it can be alternately installed on the self-centering vise after adjusting the length of the positioning rod to ensure the position of each workpiece on the self-centering vise, and ensure that the positioning accuracy of the workpiece on each vise is consistent. Thus, there is no need for repeated calibration during processing, which greatly improves the processing efficiency. The detachable design of the magnetic positioning device simplifies the operation process and facilitates the clamping and replacement of workpieces. In addition, through the rapid and accurate positioning of the magnetic positioning device, rapid die change can be achieved. A single magnetic positioning device can meet the use of multiple vises for the project tooling. If a zero-point positioning device is used for the same number of workstations, twice the number of zero-point positioning devices is required to achieve the same effect.

[0020] 2. Further, by setting three self-centering vises distributed circumferentially, three workpieces can be processed simultaneously, and a clearance portion is provided between adjacent self-centering vises so that they do not interfere with each other during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the base of a five-axis polyhedron multi-piece processing tooling according to an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of a magnetic positioner of a five-axis polyhedron multi-piece processing tooling according to an embodiment of the present invention mounted on the base;

[0023] Figure 3Schematic diagram of the magnetic adsorption positioner structure of a five-axis polyhedron multi-piece processing tooling according to an embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the structure of the bottom plate of a five-axis polyhedron multi-piece processing tooling according to an embodiment of the present invention;

[0025] Reference numerals: bottom plate 1, base 2, clearance part 21, self-centering vise 3, positioning surface 31, clamping groove 32, magnetic adsorption positioner 4, magnetic adsorption base 41, support block 42, positioning rod 43, locking bolt 44, workpiece 5. Specific embodiments

[0026] Combined with Figures 1 to 4 As shown, this embodiment provides a five-axis polyhedron multi-piece processing tooling, including: a base 2, on which at least two self-centering vises 3 are inclined; and a magnetic adsorption positioner 4, which is adapted to be detachably connected to the self-centering vise 3 by magnetic adsorption. The magnetic adsorption positioner 4 includes a positioning rod 43, and the positioning rod 43 is adjustably installed on the magnetic adsorption positioner 4. The magnetic adsorption positioner 4 is adapted to position the workpiece 5 at the corresponding position of the self-centering vise 3 through the positioning rod 43, and can be switched and connected on the self-centering vise 3 under the disassembly and assembly of the user, so that the positioning position of the workpiece 5 on each self-centering vise 3 is the same.

[0027] In this embodiment, the base 2 is installed on the frame through the bottom plate 1, and a plurality of bolt holes are provided on the bottom plate 1 for adapting to various specifications of the frame. Through the plurality of bolt holes, corresponding bolt holes can be selected for mating connection according to the different positions of the mounting holes on different frames. In one embodiment, the base 2 can be installed on the rotating mechanism of the frame through the bottom plate 1, so that the base 2 can be rotated by the rotating mechanism during processing to switch the self-centering vise 3 to the processing position.

[0028] In this embodiment, a self-centering vise 3 is selected. The self-centering vise 3 can be regarded as two movable jaws. During clamping, the product blank is squeezed towards the center, and the size of the product blank does not affect the center of the product after clamping. The self-centering vise 3 is inclined on the base, which can meet the processing at multiple angles of the five-axis machine tool and has a larger space for avoidance. The self-centering vise can be provided with two, three, four or more. Preferably, in this embodiment, three self-centering vises are provided, and the three self-centering vises are evenly distributed around the circumference on the base. Through the three self-centering vises 3 evenly distributed around the circumference, the interference of five-axis machining can be effectively avoided, while meeting five-sided machining, and at the same time making the base 2 meet a certain rigidity. In addition, the uniform circumferential distribution conforms to the operation of the five-axis machine tool turntable (360-degree rotation), which is convenient for calculating angle changes and can reduce the programming difficulty.

[0029] Combined withFigure 1 As shown, three mounting parts for mounting the self-centering vise 3 are provided on the base 2, and a clearance part 21 is provided between adjacent mounting parts, which can provide a movement space for the five-axis tool and play a role in machining avoidance to avoid interference during the machining process. The self-centering vise 3 is connected to the mounting part of the base 2 through fasteners such as bolts, so that the self-centering vise 3 is detachably mounted on the base 2, which is convenient for replacement to adapt to workpieces 5 of different specifications. The three self-centering vises 3 are evenly distributed around the circumference, that is, arranged in a layout of three equal parts of the circumference, so that when the base 2 is mounted on the rotating mechanism, the rotating mechanism rotates 120° each time to switch different workpieces 5 to the same machining position, ensuring that the workpiece 5 is at the same machining position after each switch.

[0030] The self-centering vise 3 can adopt an existing structure, which includes two movable clamping blocks. A clamping groove 32 suitable for clamping the workpiece 5 is formed between the two movable clamping blocks, and a positioning surface 31 is provided on the outside of the self-centering vise 3 for mounting the magnetic positioning device 4.

[0031] Combined Figure 2 and Figure 3 As shown, the magnetic positioning device 4 includes a magnetic base 41, a support block 42 connected to the magnetic base 41, and a positioning rod 43 connected to the support block 42. The positioning rod 43 is suitable for extending into the clamping groove 32 to position the blank workpiece placed in the clamping groove. Here, the support block 42 is fixed to the magnetic base 41 by bolts, and the positioning rod 43 is adjustably mounted on the support block 42 through a locking bolt 44. Specifically, the positioning rod 43 is matched with the support block 42 in the form of precision holes. After adjusting to the required length, it is locked and fixed by the locking screw or locking bolt 44 on the side. Here, a through hole is provided on the support block 42 for the positioning rod 43 to pass through, and the locking bolt 44 is suitable for vertically passing through the through hole to lock the positioning rod 43; when adjusting the positioning rod 43, only the locking bolt 44 needs to be loosened or tightened. In this embodiment, a standard mounting surface is formed on the magnetic base 41, and the standard mounting surface is suitable for fitting on the positioning surface 31 of the self-centering vise 3, so that the positioning rod 43 is parallel to the length extension direction of the clamping groove 32, thereby positioning the workpiece 5. Here, the positioning rod 43 is movable before being fixed to the support block 42, and the length is determined and fixed by using a caliper or a height gauge outside the machine according to the requirements of the program sheet.

[0032] In an embodiment, during use, the working process is as follows:

[0033] 1. Clean the workbench and the machining fixture;

[0034] 2. After installation, the processing tooling is located at positions X0±0.5 and Y0±0.5 in the machine tool coordinates;

[0035] 3. Fix the processing tooling to the workbench surface through the corresponding screw holes on the tooling;

[0036] 4. Calibrate the straight edge of the processing tooling;

[0037] 5. Center the φ40 hole on the processing tooling at X0 and Y0, and the surface of the processing tooling is Z0;

[0038] 6. Adjust the length of the positioning rod 43 according to the prompt of the program sheet;

[0039] 7. Fix the magnetic positioning device 4 on the positioning surface 31 of the self-centering vise 3;

[0040] 8. Locate and clamp the workpiece 5 according to the end position of the positioning rod 43;

[0041] 9. Remove the magnetic positioning device 4 and perform five-axis machining.

[0042] In this embodiment, through the processing tooling, 3 workpieces 5 can be clamped at one time. Using the clamping method of the traditional self-centering vise 3, turning the wrench can clamp the workpiece 5. Cooperating with the magnetic positioning device 4 for rapid and precise positioning, it can be removed after positioning, avoiding flipping interference during processing, and the repeat positioning accuracy is relatively high (the normal test error is within 0.03MM - 0.07MM). 3 workpieces 5 can be clamped at one time, and there is no need to re-center after positioning, reducing the downtime.

[0043] Through the solution of this embodiment, the workpiece 5 can be quickly positioned during clamping, and has good repeat positioning accuracy; after the workpiece 5 is positioned, the workpiece 5 can be simply and easily clamped firmly, and there is no need to repeatedly confirm the positioning of the workpiece 5 during the locking process.

[0044] It should be understood that the above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention.

[0045] The above introduction to the drawings used in the embodiments only shows some embodiments of the present invention and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

Claims

1. A five-axis polyhedron multi-piece processing tool, characterized in that: include: A base plate for mounting the base on a rack; A base, wherein at least two self-centering vises are provided on the base; The magnetic positioner is suitable for being detachably connected to the self-centering vise by magnetic attraction, and includes a positioning rod, which is adjustably mounted on the magnetic positioner. The magnetic positioner is suitable for positioning the workpiece at a corresponding position of the self-centering vise through the positioning rod, and is convenient for switching the connection on each of the self-centering vises during disassembly and assembly by the user.

2. The five-axis polyhedron multi-piece machining tool according to claim 1, characterized in that: The self-centering vise is arranged obliquely on the base.

3. The five-axis polyhedron multi-piece machining tool according to claim 1, characterized in that: The self-centering vises are provided in three numbers, and the three self-centering vises are evenly distributed around the circumference.

4. The five-axis polyhedron multi-piece machining tool according to claim 1, characterized in that: The magnetic positioner comprises a magnetic base and a support block connected to the magnetic base, and the support block is connected to the positioning rod.

5. The five-axis polyhedron multi-piece machining tool according to claim 1, characterized in that: The positioning rod is locked on the supporting block by a locking screw.

6. The five-axis polyhedron multi-piece machining tool according to claim 4, characterized in that: The self-centering vise comprises two movable clamping blocks, a clamping groove suitable for clamping a workpiece is formed between the two movable clamping blocks, and the positioning rod is suitable for extending into the clamping groove.

7. The five-axis polyhedron multi-piece machining tool according to claim 6, characterized in that: The magnetic base is provided with a standard mounting surface, the self-centering vise is provided with a positioning surface suitable for cooperating with the standard mounting surface, and the standard mounting surface is suitable for being fitted on the positioning surface so that the positioning rod is parallel to the length extension direction of the clamping groove.

8. The five-axis polyhedron multi-piece machining tool according to claim 1, characterized in that: The self-centering vise is detachably mounted on the base.

9. The five-axis polyhedron multi-piece machining tool according to claim 8, characterized in that: The base is provided with a space-avoiding portion between adjacent self-centering vises.

10. The five-axis polyhedron multi-piece machining tool according to claim 1, characterized in that: The bottom plate is provided with a plurality of bolt holes for adapting to racks of various specifications.

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