An optical-assisted wire cutting device

Abstract

Embodiments of the present disclosure provide an optical auxiliary based wire cutting device, comprising: a mounting base; an optical positioning structure arranged on the mounting base, the optical positioning structure being configured to emit a positioning light beam of a planned cutting path; a stylus assembly coaxially arranged with the optical positioning structure, the stylus assembly being configured to mechanically pre-position a hole to be cut; and a wire cutting structure; wherein the optical positioning structure is configured to calibrate the positioning light beam through the stylus assembly, and the wire cutting unit performs wire cutting according to the positioning light beam. In the present application, the mechanical pre-positioning position of the hole is first determined by the stylus assembly, i.e. the initial positioning of the hole is provided, and the optical positioning structure is also provided with a light path calibration reference. By using the above mechanical pre-positioning + optical positioning arrangement, the positioning accuracy can be effectively improved, and the problem of deviation can be effectively overcome, thereby the processing time can be shortened.

Description

Technical Field

[0001] The embodiments disclosed herein belong to the field of wire electrical discharge machining technology, specifically relating to an optically assisted wire cutting device. Background Technology

[0002] Wire EDM technology, as a special processing technology, has been widely used in mechanical processing and production due to its high processing accuracy, high production efficiency, low power consumption, and low manufacturing cost.

[0003] However, when cutting small holes in complex components, the centering time accounts for 70% of the total processing time during wire cutting due to the small hole diameter. Furthermore, there is still a chance of misalignment during centering, which may result in the cut hole not meeting the accuracy requirements.

[0004] Therefore, how to solve the above problems has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The embodiments disclosed herein are intended to at least address one of the technical problems existing in the prior art, and to provide an optically assisted wire cutting device.

[0006] One aspect of the embodiments of this disclosure provides an optically assisted wire cutting device, comprising: a mounting base;

[0007] An optical positioning structure is disposed on the mounting base and is used to emit a positioning beam with a planned cutting path.

[0008] A needle insertion assembly, which is coaxially arranged with the optical positioning structure, is used for mechanical pre-positioning of the channel to be cut; and a wire cutting structure;

[0009] The optical positioning structure is configured to calibrate the positioning beam through the needle assembly, and the wire cutting unit performs wire cutting according to the positioning beam.

[0010] Optionally, the plug needle assembly includes a plug needle base connected to the optical positioning structure, and a plug needle connected to the plug needle base and coaxially disposed with respect to the optical positioning structure.

[0011] Optionally, the needle base is detachably connected to the optical positioning structure.

[0012] Optionally, the needle base is threadedly connected to the optical positioning structure.

[0013] Optionally, the plug needle is detachably connected to the plug needle base.

[0014] Optionally, the plug needle is threadedly connected to the plug needle base.

[0015] Optionally, the mounting base includes a worktable and a multi-degree-of-freedom mounting assembly disposed on the worktable, wherein the optical positioning structure is disposed at the end of the multi-degree-of-freedom mounting assembly.

[0016] Optionally, the multi-degree-of-freedom mounting assembly is detachably connected to the worktable.

[0017] Optionally, the multi-degree-of-freedom mounting assembly is magnetically connected to the worktable.

[0018] Optionally, the multi-degree-of-freedom mounting assembly includes an electromagnetic base disposed on the worktable and a multi-degree-of-freedom robotic arm connected to the electromagnetic base, wherein the optical positioning structure is provided at the end of the multi-degree-of-freedom robotic arm.

[0019] The beneficial effects of the embodiments of this disclosure include:

[0020] In this application, the mechanical pre-positioning position of the channel is first determined using a plug pin assembly, thus providing initial positioning of the channel and also providing an optical path calibration reference for the optical positioning structure. By adopting the above-mentioned mechanical pre-positioning + optical positioning setup, positioning accuracy can be effectively improved, and the problem of offset can be effectively overcome, thereby shortening processing time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an optically assisted wire cutting device according to an embodiment of the present disclosure.

[0022] In the figure, 1. Mounting base; 2. Optical positioning structure; 3. Needle assembly; 4. Wire cutting structure; 5. Fixture; 6. Component; 7. Channel; 11. Worktable; 12. Multi-degree-of-freedom mounting assembly; 121. Electromagnetic base; 122. Multi-degree-of-freedom robotic arm; 31. Needle base; 32. Needle. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed descriptions and accompanying drawings of the following embodiments are used to exemplarily illustrate the principles of this application, but should not be used to limit the scope of this application; that is, this application is not limited to the described embodiments. In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances.

[0026] like Figure 1 As shown, an optically assisted wire cutting device includes a mounting base 1, an optical positioning structure 2, and a needle plug assembly 3.

[0027] The optical positioning structure 2 is disposed on the mounting base 1, and is used to emit a positioning beam for planning the cutting path. The plug needle assembly 3 is coaxially disposed with the optical positioning structure 2, and is used for mechanical pre-positioning of the channel to be cut, as well as the wire cutting structure 4.

[0028] The optical positioning structure 2 is configured to calibrate the positioning beam via the needle assembly 3, and the wire cutting unit performs wire cutting based on the positioning beam. The optical positioning structure 2 emits a positioning beam coaxial with the needle assembly 3, and the angle of the beam is adjusted by the needle assembly 3 to perform wire cutting angle calibration.

[0029] In this application, the mechanical pre-positioning position of the channel is first determined using the plug needle assembly 3, which provides initial positioning of the channel and also provides an optical path calibration reference for the optical positioning structure 2. By adopting the above-mentioned mechanical pre-positioning + optical positioning setup, the positioning accuracy can be effectively improved and the problem of offset can be effectively overcome, thereby shortening the processing time.

[0030] In some embodiments, the wire cutting structure 4 includes a molybdenum wire.

[0031] In some embodiments, the optical positioning structure 2 includes an adjustable-angle positioning light.

[0032] In some embodiments, the plug needle assembly 3 includes a plug needle base 31 connected to the optical positioning structure 2, and a plug needle 32 connected to the plug needle base 31 and coaxially disposed with the optical positioning structure 2.

[0033] In some embodiments, the needle base 31 is detachably connected to the optical positioning structure 2.

[0034] In some embodiments, the needle base 31 is threadedly connected to the optical positioning structure 2. Specifically, the needle base 31 is fastened to the positioning lamp by internal and external thread connection. It is understood that the detachable fixing method between the needle base 31 and the positioning lamp includes, but is not limited to, threaded connection, and may also be other detachable connection methods.

[0035] In some embodiments, the plug needle 32 is detachably connected to the plug needle base 31.

[0036] In some embodiments, the plug pin 32 is threadedly connected to the plug pin base 31. It is understood that the detachable connection between the plug pin 32 and the plug pin base 31 can be, but is not limited to, a threaded connection, or other detachable connection methods. By coaxially aligning the plug pin 32 with the optical positioning structure 2, the coaxiality of the positioning beam can be ensured.

[0037] In some embodiments, the mounting base 1 includes a worktable 11 and a multi-degree-of-freedom mounting assembly 12 disposed on the worktable 11, and the optical positioning structure 2 is disposed at the end of the multi-degree-of-freedom mounting assembly 12.

[0038] In some embodiments, the multi-degree-of-freedom mounting assembly 12 is detachably connected to the worktable 11.

[0039] In some embodiments, the multi-degree-of-freedom mounting assembly 12 is magnetically connected to the worktable 11.

[0040] In some embodiments, the multi-degree-of-freedom mounting assembly 12 includes an electromagnetic base 121 disposed on the worktable 11, and a multi-degree-of-freedom robotic arm 122 connected to the electromagnetic base 121, wherein the optical positioning structure 2 is disposed at the end of the multi-degree-of-freedom robotic arm.

[0041] Specifically, the electromagnetic base 121 is magnetically controlled by a knob to allow for detachable connection with the worktable 11.

[0042] In some embodiments, the radial dimension of the plug needle 32 is set to match the minimum radial dimension of the channel 7 in the component 6.

[0043] In some embodiments, the wire cutting device further includes a clamp 5 for holding the member 6. It is understood that the structure of the clamp 5 is not limited, as long as it can achieve the clamping function.

[0044] This application also utilizes the above-mentioned wire cutting device to provide a wire cutting method, including: step 1, clamping the sample component 6, and during the clamping process, estimating the cutting path of the channel 7 to ensure that the clamping does not affect the wire cutting.

[0045] Step 2: Adjust the angle of the positioning light, insert the plug pin 32 into the channel 7, and use the plug pin 32 for mechanical pre-positioning and calibration of the positioning beam of the positioning light.

[0046] Step 3: Unscrew the needle base 31 from the positioning light.

[0047] Step 4: Based on the position of the positioning beam, set the starting and ending points of the cutting and plan the cutting path.

[0048] Step 5: Cut the sample.

[0049] The wire cutting method of this application can improve the cutting accuracy when cutting micro-channels and reduce the cutting time.

[0050] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A wire cutting device based on optical assistance, characterized in that, include: Mounting substrate; An optical positioning structure is disposed on the mounting base and is used to emit a positioning beam with a planned cutting path. A needle insertion assembly, which is coaxially arranged with the optical positioning structure, is used for mechanical pre-positioning of the channel to be cut; and a wire cutting structure; The optical positioning structure is configured to calibrate the positioning beam through the needle assembly, and the wire cutting unit performs wire cutting according to the positioning beam.

2. The wire cutting device according to claim 1, characterized in that, The plug needle assembly includes a plug needle base connected to the optical positioning structure, and a plug needle connected to the plug needle base and coaxially disposed with respect to the optical positioning structure.

3. The wire cutting device according to claim 2, characterized in that, The needle base is detachably connected to the optical positioning structure.

4. The wire cutting device according to claim 3, characterized in that, The needle base is threadedly connected to the optical positioning structure.

5. The wire cutting device according to claim 2, characterized in that, The plug needle is detachably connected to the plug needle base.

6. The wire cutting apparatus according to claim 5, characterized in that, The plug needle is threadedly connected to the plug needle base.

7. The wire cutting device according to claim 1, characterized in that, The mounting base includes a worktable and a multi-degree-of-freedom mounting assembly disposed on the worktable, and the optical positioning structure is disposed at the end of the multi-degree-of-freedom mounting assembly.

8. The wire cutting apparatus according to claim 7, characterized in that, The multi-degree-of-freedom mounting assembly is detachably connected to the worktable.

9. The wire cutting apparatus according to claim 8, characterized in that, The multi-degree-of-freedom mounting assembly is magnetically connected to the worktable.

10. The wire cutting apparatus according to claim 7, characterized in that, The multi-degree-of-freedom mounting assembly includes an electromagnetic base disposed on the worktable and a multi-degree-of-freedom robotic arm connected to the electromagnetic base, wherein the optical positioning structure is disposed at the end of the multi-degree-of-freedom robotic arm.

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