A fixture device for micro-wire laser welding and a clamping method thereof

Abstract

The present application relates to a kind of fixture device for microfilament laser welding and its clamping method, fixture device includes base, recess adjusting device and cover plate;Base is equipped with for accommodating microfilament base recess, base recess width is adjustable, its section gradually increases from bottom to top;Recess adjusting device is connected to base, for by adjusting the height position of microfilament in base recess by adjusting base recess width, to make the top end height of microfilament not lower than the top end height of base recess;Cover plate is arranged above base recess and is pressed on microfilament.Base and cover plate are respectively pressed on microfilament from different directions, and microfilament is stably clamped in base recess.During welding, microfilament does not need to be fixed by hand, will not cause the relative position change of microfilament, can smoothly clamp microfilament, and the welding quality of laser welding microfilament is good, and it is favorable to improve welding efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser micro-connection technology, in particular to a clamp device for laser welding of micro-wire and a clamping method thereof. BACKGROUND

[0002] The connection of micro-wire (diameter less than 0.2mm) is often involved in the aviation electronics industry. The traditional resistance welding requires a higher level of operation of workers and has a lower joint yield, which is difficult to meet the production demand.

[0003] Laser has the characteristics of small focusing spot size, small heat-affected zone, high energy density and precise controllable heat input, which is very suitable for precise connection of micro-wire. Laser welding technology not only can meet the requirements of mass production, miniaturization and precise connection of aviation devices, but also can meet the technical demand of micro-connection for the development of new technology in the aviation field. It is the development trend of micro-wire connection technology.

[0004] When laser welding micro-wire, the micro-wire needs to be fixed before welding. Since the diameter of the micro-wire is very small, it is difficult to control the relative position of the micro-wire during manual operation. Even if the position of the micro-wire is properly placed, the shaking of the hand during the welding process will cause the relative position of the micro-wire to change, resulting in the failure to weld together or the substandard welding quality.

[0005] In summary, how to stably clamp the micro-wire during the laser welding of the micro-wire becomes a technical problem to be solved by the technical personnel in the field. SUMMARY

[0006] In view of the problems existing in the prior art, one of the purposes of the present application is to provide a clamp device for laser welding of micro-wire, which can stably clamp the micro-wire and improve the welding efficiency.

[0007] The second purpose of the present application is to provide a clamping method for laser welding of micro-wire.

[0008] In order to achieve the above purposes, the present application adopts the following technical solutions:

[0009] A clamp device for laser welding of micro-wire, comprising a base, a groove adjusting device and a cover plate;

[0010] The base is provided with a base groove for accommodating the micro-wire, and the width of the base groove is adjustable, and the cross section gradually increases from bottom to top;

[0011] The groove adjusting device is connected to the base, and is used to adjust the height position of the micro-wire in the base groove by adjusting the width of the base groove, so that the top end height of the micro-wire is not lower than the top end height of the base groove;

[0012] The cover plate is arranged above the base recess and presses against the micro-wire.

[0013] Further, the base comprises a first base and a second base arranged adjacently; the first base is provided with a first inclined surface, the second base is provided with a second inclined surface, and the base recess is formed between the first inclined surface and the second inclined surface; the recess adjusting device comprises a clamping portion arranged on the first base and a sliding groove arranged on the second base correspondingly, and the clamping portion slides on the sliding groove to adjust the transverse distance between the first inclined surface and the second inclined surface.

[0014] Further, the second base is provided with a vertical adjusting device, which abuts against the clamping portion of the first base, for adjusting the vertical spacing between the first base and the second base.

[0015] Further, the vertical adjusting device comprises a locking bolt, which is threadedly connected to the second base and vertically abuts against the clamping portion.

[0016] Further, the second inclined surface and the contact position of the cover plate with the micro-wire are both provided with a rounded corner; the rounded corner of the cover plate is tangent to the first inclined surface.

[0017] Further, the cover plate is provided with a pressure adjusting assembly for adjusting the pressure of the cover plate pressing against the micro-wire in the base recess.

[0018] Further, the pressure adjusting assembly comprises a threaded block and a tension spring, the threaded block is threadedly connected to the second base, and the two ends of the tension spring are connected to the lower end of the cover plate and the threaded block respectively.

[0019] Further, the cover plate is connected with a connecting assembly, the connecting assembly is provided with a horizontal position adjusting groove and a vertical position adjusting groove, the second base is slidingly connected to the horizontal position adjusting groove, and the cover plate is slidingly connected to the vertical position adjusting groove.

[0020] A clamping method for micro-wire laser welding, which adopts a clamping device for micro-wire laser welding, and comprises the following steps,

[0021] Placing the micro-wire in the base recess,

[0022] Adjusting the width of the base recess by using the recess adjusting device to adjust the height position of the micro-wire in the base recess, so that the top end of the micro-wire is not lower than the top end of the base recess;

[0023] Placing the cover plate above the base recess and pressing it against the micro-wire.

[0024] Further, when the micro-wire is taken out, an upward force is applied to the micro-wire in the base recess to overcome the downward pulling force of the tension spring on the cover plate, so that the cover plate is opened and the micro-wire slides out along the rounded corner of the cover plate.

[0025] In general, the present application has the following advantages:

[0026] When the micro-wire is laser welded, the micro-wire is first placed in the base groove. Since the width of the base groove is adjustable and the cross section gradually increases from bottom to top, the height position of the micro-wire in the base groove can be adjusted by adjusting the width of the base groove by the groove adjusting device. When the width of the base groove increases, the height position of the micro-wire in the base groove decreases; when the width of the base groove decreases, the height position of the micro-wire in the base groove increases. After the micro-wire is adjusted to a height position whose top end height is not lower than the top end height of the base groove by the groove adjusting device, the cover plate is placed above the base groove and pressed against the micro-wire. The base and the cover plate press against the micro-wire from different directions, and the micro-wire is stably clamped in the base groove. During the welding process, the micro-wire does not need to be fixed by hand, the relative position of the micro-wire will not change, the micro-wire can be stably clamped, the welding quality of the laser welding micro-wire is good, and the welding efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the three-dimensional structure of another perspective of an embodiment of the present application;

[0029] Figure 3 is a schematic diagram of the middle section of an embodiment of the present application;

[0030] Figure 4 is an enlarged schematic diagram of A of Figure 3

[0031] Figure 5 is a schematic diagram of the three-dimensional structure of the clamp base of an embodiment of the present application;

[0032] Figure 6 is a schematic diagram of the three-dimensional structure of a "C" type base of an embodiment of the present application;

[0033] Figure 7 is a clamping geometric relationship diagram when the micro-wire has the minimum diameter of an embodiment of the present application;

[0034] Figure 8 is a clamping geometric relationship diagram of another situation of an embodiment of the present application.

[0035] In the drawings:

[0036] ​1 is the fixture base, 1a is the trapezoidal groove, 1b is the "C" shaped positioning groove, 2 is the first screw, 3 is the second screw, 4 is the third vertical positioning bolt and nut, 5 is the second locking bolt, 6 is the cover plate, 7 is the second straight connecting plate, 8 is the second "T" shaped connecting plate, 9 is the threaded block, 10 is the fourth vertical positioning bolt and nut, 11 is the cover plate bracket, 12 is the first straight connecting plate, 13 is the first "T" shaped connecting plate, 14 is the second vertical positioning bolt and nut, 15 is the first vertical positioning bolt and nut, 16 is the first horizontal positioning bolt, 17 is the first locking bolt, 18 is the first spring washer, 19 is the first gasket, 20 is the "C" shaped base, 20a is the snap-fit ​​part, 21 is the micro wire, 22 is the second horizontal positioning bolt, 23 is the tension spring, 24 is the pull rod, 25 is the second gasket, and 26 is the second spring washer. Detailed Implementation

[0037] The present invention will now be described in further detail.

[0038] like Figures 1-6 As shown, a fixture device for microfilament laser welding includes a base, a groove adjustment device, and a cover plate 6.

[0039] The base is provided with a base groove for accommodating the microfilament 21. The width of the base groove is adjustable, and its cross-section gradually increases from bottom to top.

[0040] The groove adjustment device is connected to the base and is used to adjust the height position of the microfilament 21 in the groove of the base by adjusting the width of the groove of the base, so that the height of the top of the microfilament 21 is not lower than the height of the top of the groove of the base.

[0041] The cover plate 6 is located above the groove of the base and presses against the microfilament 21.

[0042] When using laser welding of the micro-wire 21, the micro-wire 21 is first placed in the base groove. Since the width of the base groove is adjustable, and its cross-section gradually increases from bottom to top, the height of the micro-wire 21 within the groove can be adjusted by using a groove adjustment device. When the width of the base groove increases, the height of the micro-wire 21 within the groove decreases; when the width of the base groove decreases, the height of the micro-wire 21 within the groove increases. After adjusting the micro-wire 21 so that its top height is not lower than the top height of the base groove using the groove adjustment device, the cover plate 6 is placed above the base groove and presses against the micro-wire 21. The base and cover plate 6 press against the micro-wire 21 from different directions, stably clamping the micro-wire 21 within the base groove. During the welding process, there is no need to manually fix the micro-wire 21, preventing changes in its relative position and ensuring stable clamping. Laser welding of the micro-wire 21 results in good welding quality and improves welding efficiency.

[0043] The base comprises a first base and a second base arranged adjacently; the first base is provided with a first slope, the second base is provided with a second slope, and a base groove is formed between the first slope and the second slope.

[0044] The groove adjusting device comprises a clamping portion 20a provided on the first base and a sliding groove provided on the second base correspondingly; the clamping portion 20a slides on the sliding groove to adjust the transverse distance between the first slope and the second slope.

[0045] Specifically, the first base is a “C”-shaped base 20 provided with a “C”-shaped clamping portion 20a; the second base is a clamp base 1, and the sliding groove of the clamp base 1 is preferably a “C”-shaped positioning groove. By corresponding the “C”-shaped clamping portion 20a and the “C”-shaped positioning groove 1b, the position of the “C”-shaped base 20 on the clamp base 1 is ensured. By sliding the “C”-shaped clamping portion 20a on the “C”-shaped positioning groove, the transverse distance between the first slope and the second slope can be adjusted to adjust the width of the base groove, and then the height position of the micro-wire 21 in the base groove is adjusted.

[0046] The second slope is provided with a rounded corner, and the first slope and the second slope combine to form a nearly “V”-shaped base groove. Compared with a flat surface, the arc-shaped second slope enhances the structural strength, prevents the bottom of the second slope from being too thin to withstand pressure and causing a fracture gap, and avoids affecting the clamping stability.

[0047] After welding, the micro-wire 21 needs to be taken out of the clamp for the next welding. Since the micro-wire 21 is very thin, and the clamp of the prior art is usually relatively bulky, the clamp must be carefully disassembled when taking out the micro-wire 21, which results in a longer taking-out time and reduces the welding efficiency. Moreover, the taking-out process is easy to scratch the micro-wire 21, affecting the physical properties of the micro-wire 21.

[0048] In the embodiment, the cover plate 6 is provided with a rounded corner at the contact position with the micro-wire 21, and preferably, the rounded corner of the cover plate 6 is tangent to the first slope. When the micro-wire 21 needs to be taken out of the base groove after welding, the micro-wire 21 can be pulled and slid upward along the rounded corner of the cover plate 6 and then slid out from between the cover plate 6 and the first slope, without the need to carefully disassemble the clamp. This can achieve rapid unloading after welding, avoid scratches on the surface of the micro-wire 21, and further ensure the physical properties of the micro-wire 21.

[0049] Preferably, the first slope of the “C”-shaped base 20, the rounded corner of the cover plate 6, and the rounded corner of the clamp base 1 are respectively tangent to the cylindrical surface of the micro-wire 21.

[0050] The clamp base 1 is provided with a vertical adjusting device abutting against the clamping portion 20a of the “C”-shaped base, for adjusting the vertical distance between the clamp base 1 and the base 20.

[0051] Specifically, the vertical adjusting device comprises a first locking bolt 17 and a second locking bolt 5. The "C"-shaped positioning groove of the clamp base 1 is provided with threaded through holes on both sides, which are respectively threaded connected with the first locking bolt 17 and the second locking bolt 5. The first locking bolt 17 is provided with a first gasket 19 and a first spring washer 18 between the first locking bolt 17 and the clamp base 1, and the end surface of the first locking bolt 17 is abutted against the bottom surface of the clamping portion 20a on one side of the "C"-shaped base 20. The second locking bolt 5 is provided with a second gasket 25 and a second spring washer 26 between the second locking bolt 5 and the clamp base 1, and the end surface of the second locking bolt 5 is abutted against the bottom surface of the clamping portion 20a on the other side of the "C"-shaped base 20. By adjusting the first locking bolt 17 and the second locking bolt 5, the position of the "C"-shaped base 20 is ensured to be stable and unchanged.

[0052] The cover plate 6 is provided with a pressure adjusting assembly for adjusting the pressure of the cover plate 6 against the micro wires 21 in the base groove. The pressure adjusting assembly comprises a threaded block 9 and a tension spring 23, the threaded block 9 is threaded connected with the second base, and the two ends of the tension spring 23 are respectively connected with the lower end of the cover plate 6 and the threaded block 9.

[0053] Specifically, the clamp base 1 is provided with three vertical threaded through holes in parallel in the middle, the middle threaded through hole is threaded connected with the threaded block 9, and the two side threaded through holes are used for fixing the clamp base 1. The clamp base 1 is provided with a trapezoidal groove 1a at the top for placing the cover plate 6, one end of the trapezoidal groove 1a close to the "C"-shaped base 20 is processed into a second inclined surface, and the second inclined surface of the clamp base 1 is provided with a rounded corner to form a circular arc surface, which is combined with the first inclined surface of the "C"-shaped base 20 to form a split "V"-shaped base groove, so as to facilitate the placement and positioning of the micro wires 21.

[0054] One end of the threaded block 9 is provided with a hook connected with the tension spring 23, the other end of the threaded block 9 is provided with a cross slot, the other end of the tension spring 23 is connected with a pull rod 24, the middle of the cover plate 6 is provided with a rectangular through hole provided with a clamping groove, the pull rod 24 is horizontally clamped in the clamping groove in the middle of the cover plate 6, the position of the threaded block 9 on the second base is adjusted by adjusting the cross slot of the threaded block 9 to adjust the tension of the tension spring 23, and further adjust the tension of the cover plate 6. The tension adjusting range is wide, which can not only keep the pressure of the cover plate 6 against the micro wires 21 to realize stable clamping, but also enable the cover plate 6 to automatically close after the micro wires 21 slide out along the rounded corner of the cover plate 6, thereby improving the operation efficiency.

[0055] The cover plate 6 is connected with a connecting assembly provided with a horizontal position adjusting groove and a vertical position adjusting groove, and the second base is slidingly connected with the horizontal position adjusting groove; the cover plate 6 is slidingly connected with the vertical position adjusting groove.

[0056] Specifically, the cover plate 6 is provided with a cover plate support 11 below, and the cover plate 6 is fixed with the cover plate support 11 through the first screw 2 and the second screw 3.

[0057] The connecting assembly comprises a first "T" type connecting plate 13, a first straight connecting plate 12, a second "T" type connecting plate 8 and a second straight connecting plate 7. The first "T" type connecting plate 13 is provided with horizontal and vertical position adjusting grooves. The clamp base 1 is provided with positioning grooves on both sides. The first "T" type connecting plate 13 is fixed in the positioning groove of the clamp base 1 by a first horizontal positioning bolt 16. The first straight connecting plate 12 is provided with three through holes. The first straight connecting plate 12 is fixed on the vertical position adjusting groove of the first "T" type connecting plate 13 by a first vertical positioning bolt nut 15 and a second vertical positioning bolt nut 14. The upper side through hole of the first straight connecting plate 12 is in sliding connection with the cover plate support 11. The second "T" type connecting plate 8 is provided with horizontal and vertical position adjusting grooves. The second "T" type connecting plate 8 is fixed in the positioning groove of the clamp base 1 by a second horizontal positioning bolt 22. The second straight connecting plate 7 is provided with three through holes. The second straight connecting plate 7 is fixed on the vertical position adjusting groove of the second "T" type connecting plate 8 by a third vertical positioning bolt nut 4 and a fourth vertical positioning bolt nut 10. The upper side through hole of the second straight connecting plate 7 is in sliding connection with the cover plate support 11. The horizontal positions of the first "T" type connecting plate 13 in the positioning groove at the bottom of the clamp base 1 and the second "T" type connecting plate 8 in the positioning groove at the other side of the bottom of the clamp base 1 are adjusted to ensure that the cover plate 6 is in a suitable horizontal clamping position. The positions of the first straight connecting plate 12 on the vertical position adjusting groove of the first "T" type connecting plate 13 and the second straight connecting plate 7 on the vertical position adjusting groove of the second "T" type connecting plate 8 are adjusted to ensure that the cover plate 6 is in a suitable vertical clamping position.

[0058] As shown in Figure 7 When the first inclined surface of the "C" type base 20 is tangent to the arc surface of the second inclined surface round corner of the clamp base 1, the first inclined surface of the "C" type base 20 is coincident with the inclined end surface of the cover plate 6, the first inclined surface of the "C" type base 20 is tangent to the arc surface of the cover plate 6 round corner, the bottom surface of the cover plate 6 is coincident with the bottom surface of the trapezoidal groove 1a at the top of the clamp base 1, and the first inclined surface of the "C" type base 20, the arc surface of the cover plate 6 round corner and the arc surface of the second inclined surface round corner of the clamp base 1 are respectively tangent to the cylindrical surface of the micro wire 21, the micro wire 21 has the minimum diameter, and the minimum diameter D x of the micro wire 21 is as follows:

[0059]

[0060] Wherein, R a is the radius of the round corner tangent to the cover plate 6 and the micro wire 21, R c is the radius of the round corner tangent to the clamp base 1 and the micro wire 21, α is the inclined angle of the "C" type base 20 tangent to the micro wire 21, and H is the distance from the bottom surface of the trapezoidal groove 1a at the top of the clamp base 1 to the upper surface of the "C" type positioning groove 1b. The minimum diameter D xThe formula can provide a theoretical basis for the design optimization of the related parameters of the clamp device.

[0061] A clamping method for micro-wire laser welding, comprising the following steps:

[0062] Placing the micro-wire 21 in the base groove,

[0063] Adjusting the width of the base groove by using the groove adjusting device to adjust the height position of the micro-wire 21 in the base groove, so that the top end of the micro-wire 21 is not lower than the top end of the base groove;

[0064] Placing the cover plate 6 above the base groove and pressing against the micro-wire 21.

[0065] The specific steps include the following:

[0066] Step 1: Before using the device, adjust the horizontal position of the "C" shaped base 20 to ensure that the first inclined surface of the "C" shaped base 20 is tangent to the circular arc surface of the second inclined surface of the clamp base 1;

[0067] Step 2: Adjust the horizontal position of the first "T" shaped connecting plate 13 and the second "T" shaped connecting plate 8 to ensure that the inclined end surface of the cover plate 6 coincides with the first inclined surface of the "C" shaped base 20;

[0068] Step 3: Adjust the vertical position of the first straight connecting plate 12 and the second straight connecting plate 7 to ensure that the bottom surface of the cover plate 6 coincides with the bottom surface of the trapezoidal groove 1a of the top of the clamp base 1;

[0069] Step 4: Rotate the threaded block 9 to adjust the tension on the cover plate 6 to an appropriate size to ensure that the micro-wire 21 can be easily removed;

[0070] Step 5: When using the device, use a special tool to straighten the clamped part of the micro-wire 21, press one end of the cover plate support 11 of the cover plate 6 to open the cover plate 6, place the micro-wire 21 into the split near "V" shaped groove composed of the second inclined surface of the clamp base 1 and the first inclined surface of the "C" shaped base 20, and place the cover plate 6 to complete the clamping;

[0071] Step 6: After welding is completed, apply an upward force to the micro-wire 21 at both ends of the cover plate 6, and when the upward tension on the cover plate 6 is greater than the downward tension of the tension spring 23, the cover plate 6 automatically opens. When there are impurities in the bottom of the split near "V" shaped groove composed of the clamp base 1 and the "C" shaped base 20 affecting the clamping of the micro-wire 21, loosen the first locking bolt 17 and the second locking bolt 5, and remove the "C" shaped base 20 to clean the impurities.

[0072] It should be noted that, as shown in Figure 7 , Figure 8 When the diameter of the micro-wire 21 is greater than the minimum diameter D of the micro-wire 21 of the clamp devicex At this time, the distance L from the round center of the clamp base 1 to the first inclined surface of the "C" type base 20, the horizontal and vertical positions of the cover plate 6, and the position of the threaded block 9 can be adjusted to achieve stable clamping of the micro wire 21.

[0073] Compared with the prior art, the present application has the following technical effects:

[0074] 1) The second inclined surface of the clamp base 1 and the first inclined surface of the "C" type base are combined into a split near "V" type groove design, and the triangular clamping and supporting positioning mode in which the first inclined surface of the "C" type base, the second inclined surface of the clamp base 1, and the arc surface of the cover plate 6 are tangent to the micro wire 21, solves the problem that the micro wire 21 with a wire diameter as low as 0.02mm cannot be stably positioned, and expands the wire diameter range that can be accurately positioned by the wire clamp.

[0075] 2) The smallest diameter D of the micro wire 21 that can be clamped by the clamp device is derived x The formula determines the influence of the related parameters of the clamp device on the smallest diameter of the micro wire 21, and determines the smallest diameter of the micro wire 21 that can be stably clamped according to the actual parameters of the clamp device. At the same time, the detachable split "V" type groove solves the problem of the influence of the accumulation at the bottom of the groove on the positioning of the micro wire 21 during long-term use.

[0076] 3) The device uses a pressure adjusting assembly and a connecting assembly to achieve automatic opening and closing of the cover plate 6 when the micro wire 21 is taken out. The clamp device has small volume, simple structure, convenient operation, reliable clamping, strong universality, and low clamp quality of about 30g, and is widely applicable to different bearing type motion platforms.

[0077] The above embodiments are the preferred embodiments of the present application, but the embodiments of the present application are not limited by the above embodiments, and any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present application are equivalent replacement methods and are included in the protection scope of the present application.

Claims

1. A clamping device for micro-wire laser welding, characterized in that: Includes a base, a groove adjustment device, and a cover plate; The base has a base groove for accommodating the microfilaments. The width of the base groove is adjustable, and its cross-section gradually increases from bottom to top. The groove adjustment device is connected to the base and is used to adjust the height position of the microfilament in the groove of the base by adjusting the width of the groove, so that the height of the top of the microfilament is not lower than the height of the top of the groove of the base. The cover plate is positioned above the groove in the base and presses against the microfilaments; The base includes a first base and a second base arranged adjacent to each other; the first base is provided with a first inclined surface, the second base is provided with a second inclined surface, and a base groove is formed between the first inclined surface and the second inclined surface; the groove adjustment device includes a snap-fit ​​part provided on the first base and a corresponding sliding groove provided on the second base, the snap-fit ​​part slides on the sliding groove to adjust the lateral distance between the first inclined surface and the second inclined surface. The second base is provided with a vertical adjustment device, which abuts against the snap-fit ​​part of the first base and is used to adjust the vertical distance between the first base and the second base. The second inclined surface and the microfilament contact point, as well as the cover plate and the microfilament contact point, are both provided with rounded corners; the rounded corners of the cover plate are tangent to the first inclined surface; The cover plate is equipped with a pressure adjustment component to adjust the pressure of the cover plate pressing against the micro-wires in the groove of the base; The pressure regulating assembly includes a threaded block and a tension spring. The threaded block is threadedly connected to the second base, and the two ends of the tension spring are respectively connected to the lower end of the cover plate and the threaded block.

2. The fixture device for micro-wire laser welding according to claim 1, characterized in that: The vertical adjustment device includes a locking bolt, which is threaded to the second base and vertically abuts against the snap-fit ​​part.

3. The fixture device for micro-wire laser welding according to claim 1, characterized in that: The cover plate is connected to a connecting component, which has a horizontal position adjustment groove and a vertical position adjustment groove. The second base is slidably connected to the horizontal position adjustment groove, and the cover plate is slidably connected to the vertical position adjustment groove.

4. A clamping method for laser welding of microfilaments, characterized in that: The fixture device for microfilament laser welding according to any one of claims 1-3 includes the following steps: Place the microfilaments into the groove of the base. The width of the base groove is adjusted by using a groove adjustment device to adjust the height position of the microfilament in the base groove, so that the height of the top of the microfilament is not lower than the top of the base groove. Place the cover plate above the groove in the base and press it against the microfilament.

5. The clamping method for micro-wire laser welding according to claim 4, characterized in that: When removing the microfilament, apply an upward force to the microfilament in the groove of the base to overcome the downward pull of the tension spring on the cover plate and open the cover plate, so that the microfilament slides upward along the rounded corner of the cover plate.

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