A wire sharpening device and sharpening process

Abstract

The application discloses a metal wire rolling tip device and a rolling tip process, and relates to the field of metal wire processing.The device comprises a polishing machine and a fixing device, the fixing device is provided with a first wire clamping mechanism and a second wire clamping mechanism, the first wire clamping mechanism and the second wire clamping mechanism are used for fixing the metal wire to be rolled into a tip between a fixing plate and a rotating plate, the tension of the fixed metal wire can be adjusted by pulling the rotating plate, the polishing machine comprises a rotatable grinding wheel and a polishing wheel, the grinding wheel or the polishing wheel is used for polishing the fixed metal wire and making the metal wire broken, and the rolling tip is completed.The device is suitable for rolling the tip of the metal wire with a diameter of 0.1mm-1mm, the structure is simple, the operation is easy and labor-saving, the obtained conical tip can easily pass through a die, the device does not have any professional degree or proficiency requirement for the operator, does not involve the risk of electric shock, is pollution-free, and is suitable for the operation of the novice operator in the wire drawing experiment in the laboratory.

Description

Technical Field

[0001] This invention relates to the field of metal wire processing, and in particular to a metal wire tipping device and tipping process. Background Technology

[0002] For wire drawing of metal materials, especially alloys containing a ductile second phase, the second phase undergoes fibrosis and refinement after drawing. When a certain amount of wire drawing deformation is achieved, nanofiber composite materials and ultra-high performance are easily obtained. Wire drawing requires first sharpening the wire tip to make it thinner before it can be passed through a die for drawing. For thicker metal wires or rods, common sharpening machines can be used for sharpening. However, as the wire diameter decreases, especially below 1 mm, using conventional sharpening machines with rollers becomes difficult. Especially in the laboratory, to obtain nanoscale structures, it is often necessary to draw the wire very thin, even down to 0.1 mm in diameter. In such cases, other methods of sharpening are required, such as acid etching, electrothermal melting, or flame melting.

[0003] However, the above common tipping methods all have some drawbacks: acid corrosion is not only environmentally unfriendly, but also requires high ventilation and other facilities, otherwise it can easily damage the respiratory tract of operators.

[0004] The flame melting method usually involves holding a pair of pliers in each hand to hold the wire, heating it to red-hot and softening it with an alcohol torch or alcohol lamp, and then pulling the wire off with force. The broken part will form a smooth, burr-free, slender cone shape. However, the flame temperature is difficult to control. When used to process wires with low melting points, such as copper alloys, the flame temperature may be too high, and the broken end of the wire may be directly burned into a sphere, instead of obtaining a cone-shaped tip.

[0005] The electrothermal melting method is similar to the flame melting method, except that it uses direct current heating and can use a current controller to adjust the current and control the heating temperature of the metal wire. However, the electrothermal melting method requires the electrodes to be connected to both ends of the metal wire to be rolled, which is equivalent to short-circuiting the power supply with the metal wire. This places certain requirements on the equipment, and it is very dangerous if any fault occurs, as there is a risk of electric shock.

[0006] It is evident that the common tipping methods described above require a certain level of skill and strength from the operators and pose certain safety hazards. They are not suitable for use in laboratories, especially by novice operators during wire drawing. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a metal wire tipping device and tipping process, which has a simple structure, is easy to operate without effort, does not involve the risk of electric shock, and is pollution-free. It is suitable for novice operators to use in wire drawing experiments in the laboratory.

[0008] To achieve the above objectives, the present invention provides the following solution: This invention provides a wire tipping device, comprising a polishing machine and a fixing device. The fixing device includes a base plate, a handle, a fixing plate, a rotating plate, an elastic component, a first wire clamping mechanism, and a second wire clamping mechanism. The handle and the fixing plate are respectively disposed at both ends of the same side of the base plate. One end of the rotating plate is hinged to the base plate and located between the handle and the fixing plate. One end of the elastic component is connected to the side of the rotating plate near the fixing plate, and the other end is connected to the base plate. The first wire clamping mechanism is disposed at the end of the fixing plate away from the base plate and is used to clamp and fix a portion of the wire. The second wire clamping mechanism is disposed at the end of the rotating plate away from the base plate and is used to clamp and fix another portion of the wire. The polishing machine includes a rotatable grinding wheel and a polishing wheel. The grinding wheel or the polishing wheel is used to grind the fixed wire and break it to complete the tipping process.

[0009] Preferably, the fixing device further includes a U-shaped rod, which is fixed to the side of the rotating plate near the handle, and the opening of the U-shaped rod is oriented towards the rotating plate.

[0010] Preferably, the fixing device further includes a wire guide mechanism, one end of which is mounted on the end of the rotating plate away from the substrate and located on the side away from the fixing plate. The wire guide mechanism is used to guide the metal wire away from the polishing machine.

[0011] Preferably, the second wire clamping mechanism includes a second bolt, a second nut, and a second elastic washer. The rotating plate has a second threaded hole at one end away from the base plate. The second bolt is installed in the second threaded hole and extends to the outside of the rotating plate. The second elastic washer and the second nut are installed sequentially at the end of the second bolt extending to the outside of the rotating plate. The wire guiding mechanism has a through hole for the second bolt to pass through and is located between the rotating plate and the head of the second bolt.

[0012] Preferably, the guide wire mechanism includes a first strip plate, an inclined plate, a second strip plate, and a rectangular tube. The first strip plate has a through hole located between the rotating plate and the head of the second bolt. One end of the first strip plate away from the rotating plate is connected to one end of the inclined plate, and the other end of the inclined plate is connected to one end of the second strip plate. The other end of the second strip plate is connected to the rectangular tube. The length directions of the first strip plate, the second strip plate, and the rectangular tube are all consistent. The bottom surface of the rectangular tube is flush with the second strip plate, and the top surface of the rectangular tube has a strip hole penetrating both ends.

[0013] Preferably, the rotating plate includes a U-shaped plate and a main plate. The U-shaped plate includes a base plate and two side plates respectively disposed on the upper sides of the base plate. The two side plates are respectively disposed on both sides of the substrate and rotatably mounted on the substrate by means of pins. The upper part of the base plate is provided with a horizontal surface and an inclined surface in sequence from the end near the elastic member to the end away from the elastic member. The inclined surface is inclined from the end near the horizontal surface to the end away from the horizontal surface toward the side away from the substrate. The lower part of the base plate is connected to the main plate, and the end of the main plate away from the base plate is provided with the second wire clamping mechanism.

[0014] Preferably, the first wire clamping mechanism includes a first bolt, a first nut, and a first elastic washer. The end of the fixing plate away from the base plate is provided with a first threaded hole. The first bolt is installed in the first threaded hole and extends to the outside of the fixing plate. The end of the first bolt extending to the outside of the fixing plate is sequentially equipped with the first elastic washer and the first nut.

[0015] Preferably, the elastic component is a spring.

[0016] Preferably, the polishing machine further includes a dual-output shaft motor and a protective cover. The grinding wheel and the polishing wheel are respectively fixedly sleeved on the two power output shafts of the dual-output shaft motor. The upper part of the protective cover is provided with an upper opening. The protective cover is fixed to the housing of the dual-output shaft motor and covers the outside of the lower part of the grinding wheel.

[0017] The present invention also provides a wire tipping process based on a wire tipping device, comprising the following steps: Step 1: Clamp and fix a portion of the metal wire to the fixed plate using the first wire clamping mechanism, clamp and fix the other portion of the metal wire to the rotating plate using the second wire clamping mechanism, and leave the metal wire located between the fixed plate and the rotating plate in a relaxed state; Step 2: Start the polishing machine, hold the fixing device and move it above the polishing machine, press the metal wire fixed between the fixing plate and the rotating plate against the grinding wheel or the polishing wheel, so that the metal wire is rubbed and softened by red heat; Step 3: Continue pressing down on the fixing device until the metal wire is broken by tension. A smooth, burr-free, slender, tapered tip can be obtained at the break point, completing the tipping process. If pressing down on the fixing device alone is insufficient to break the metal wire, turn the rotating plate towards the side closer to the handle to tighten the metal wire until it breaks, completing the tipping process.

[0018] The present invention achieves the following technical effects compared to the prior art: In this invention, a first wire-clamping mechanism is located at the end of the fixed plate away from the substrate and is used to clamp and fix a portion of the metal wire. A second wire-clamping mechanism is located at the end of the rotating plate away from the substrate and is used to clamp and fix the other portion of the metal wire. The first and second wire-clamping mechanisms are used to fix the metal wire to be tipped between the fixed plate and the rotating plate, and the tension of the fixed metal wire can be adjusted by moving the rotating plate. The polishing machine includes a rotatable grinding wheel and a polishing wheel. The grinding wheel or polishing wheel is used to grind the fixed metal wire and break it, thus completing the tipping process. This device is suitable for tipping metal wires with a diameter of 0.1mm to 1mm. It has a simple structure, is easy to operate, and requires minimal effort. The obtained tapered tip easily passes through the die. It requires no specialization or skill from the operator, poses no risk of electric shock, and is pollution-free, making it suitable for novice operators in laboratory wire drawing experiments. This device can also be used in wire drawing factories. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the fixing device in the wire tipping device provided by the present invention in its natural state; Figure 2 A schematic diagram of the structure of the fixing device in the wire tipping device provided by the present invention when the rotating plate is moved; Figure 3 A schematic diagram of the installation of the first wire clamping mechanism in the fixing device of the metal wire tipping device provided by the present invention; Figure 4 This is a schematic diagram showing the installation of the second wire clamping mechanism and the wire guiding mechanism of the fixing device in the wire tipping device provided by the present invention. Figure 5 This is a schematic diagram of the wire guide mechanism of the fixing device in the wire tipping apparatus provided by the present invention. Figure 6 Right view of the rotating plate of the fixing device in the wire tipping apparatus provided by the present invention; Figure 7 for Figure 6 Sectional view along the AA direction; Figure 8 This is a schematic diagram of the polishing machine in the wire tipping device provided by the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Handle; 3. Fixing plate; 4. Rotating plate; 41. U-shaped plate; 411. Base plate; 412. Side plate; 413. Horizontal plane; 414. Inclined plane; 42. Main plate; 43. Second threaded hole; 5. Elastic component; 6. U-shaped rod; 7. First wire clamping mechanism; 71. First bolt; 72. First nut; 73. First elastic washer; 8. Second wire clamping mechanism; 81. Second bolt; 82. Second nut; 83. Second elastic washer; 9. Wire guiding mechanism; 91. First strip plate; 92. Inclined plate; 93. Second strip plate; 94. Rectangular tube; 95. Strip opening; 96. Through hole; 10. Pin; 11. Metal wire; 12. Winding spool; 13. Dual output shaft motor; 14. Protective cover; 15. Grinding wheel; 16. Polishing wheel; 17. Base; 18. Digital display screen; 19. Speed ​​knob. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The purpose of this invention is to provide a metal wire tipping device and tipping process, which has a simple structure, is easy to operate without effort, does not involve the risk of electric shock, and is pollution-free, making it suitable for novice operators in wire drawing experiments in the laboratory.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1-8 As shown, this embodiment provides a wire tipping device, including a polishing machine and a fixing device. The fixing device includes a base plate 1, a handle 2, a fixing plate 3, a rotating plate 4, an elastic component 5, a first wire clamping mechanism 7, and a second wire clamping mechanism 8. The handle 2 and the fixing plate 3 are respectively provided at both ends of the same side of the base plate 1. One end of the rotating plate 4 is hinged to the base plate 1 and located between the handle 2 and the fixing plate 3, i.e., the handle 2, the rotating plate 4, and the fixing plate 3 are sequentially arranged on the same side of the base plate 1. One end of the elastic component 5 is connected to the side of the rotating plate 4 near the fixing plate 3, and the other end is connected to the base plate 1 and located between the fixing plate 3 and the rotating plate 4. The first wire clamping mechanism 7 is located at the end of the fixing plate 3 away from the base plate 1 and is used to clamp and fix a portion of the wire 11. The second wire clamping mechanism 8 is located at the end of the rotating plate 4 away from the base plate 1 and is used to clamp and fix another portion of the wire 11.

[0026] The polishing machine includes a rotating grinding wheel 15 and a polishing wheel 16. The grinding wheel 15 or the polishing wheel 16 is used to grind the fixed metal wire 11 and break it to complete the tipping process. In use, the grinding wheel 15 or the polishing wheel 16 can be selected for grinding depending on the diameter of the metal wire 11. Taking copper alloy wire tipping as an example, copper alloy wires with a diameter of 0.3mm to 1mm are suitable for grinding with the grinding wheel 15, while copper alloy wires with a diameter less than 0.3mm are suitable for grinding with the polishing wheel 16.

[0027] To facilitate the operation of the rotating plate 4, the fixing device also includes a U-shaped rod 6, which is fixed to the side of the rotating plate 4 near the handle 2, and the opening of the U-shaped rod 6 is set facing the rotating plate 4.

[0028] When it is necessary to turn the rotating plate 4 towards the side closer to the handle 2, hold the handle 2 and hook the U-shaped rod 6 with the four fingers other than the thumb, so as to rotate the rotating plate 4 towards the side closer to the handle 2. This will apply an axial tension to the fixed metal wire 11, making the metal wire 11 taut. During the process of the metal wire 11 being softened by friction with the grinding wheel 15 or polishing wheel 16, the metal wire 11 will be thinned and broken. At the same time, the elastic component 5 will be stretched during this process. After releasing the U-shaped rod 6, under the action of the elastic component 5, the rotating plate 4 will rotate towards the side away from the handle 2, so that the rotating plate 4 returns to its original position.

[0029] The fixing device also includes a wire guide mechanism 9. One end of the wire guide mechanism 9 is mounted on the end of the rotating plate 4 away from the base plate 1 and is located on the side away from the fixing plate 3. The wire guide mechanism 9 is used to guide the metal wire 11 away from the polishing machine, thereby preventing the metal wire 11 from getting caught in the rotating grinding wheel 15 or polishing wheel 16.

[0030] The second wire clamping mechanism 8 includes a second bolt 81, a second nut 82, and a second elastic washer 83. The end of the rotating plate 4 away from the base plate 1 is provided with a second threaded hole 43. The second bolt 81 is installed in the second threaded hole 43 and extends to the outside of the rotating plate 4. The end of the second bolt 81 extending to the outside of the rotating plate 4 is sequentially provided with a second elastic washer 83 and a second nut 82. The wire guide mechanism 9 is provided with a through hole 96 for the second bolt 81 to pass through, and is located between the rotating plate 4 and the head of the second bolt 81. During assembly, the included angle between the wire guide mechanism 9 and the rotating plate 4 can be adjusted according to actual needs.

[0031] It should be noted that in this embodiment, the second bolt 81 is threadedly connected to the rotating plate 4. Alternatively, the second bolt 81 can be welded to the rotating plate 4 as a whole. In this case, the angle between the wire guide mechanism 9 and the rotating plate 4 is no longer adjustable.

[0032] Specifically, the second elastic washer 83 is attached to the side of the second nut 82 near the rotating plate 4, and the second elastic washer 83 is a circular washer.

[0033] like Figure 4 and Figure 5 As shown, the wire guiding mechanism 9 includes a first strip plate 91, an inclined plate 92, a second strip plate 93, and a rectangular tube 94. The first strip plate 91 has a through hole 96 located between the rotating plate 4 and the head of the second bolt 81. The end of the first strip plate 91 away from the rotating plate 4 is connected to one end of the inclined plate 92, and the other end of the inclined plate 92 is connected to one end of the second strip plate 93. The other end of the second strip plate 93 is connected to the rectangular tube 94. The length directions of the first strip plate 91, the second strip plate 93, and the rectangular tube 94 are all consistent. The bottom surface of the rectangular tube 94 is flush with the second strip plate 93. The top surface of the rectangular tube 94 has a strip opening 95 that passes through both ends, so that the metal wire 11 can enter the rectangular tube 94 through the strip opening 95, thereby guiding the metal wire 11 through the rectangular tube 94.

[0034] In this embodiment, the structure of the first strip plate 91, the inclined plate 92, and the second strip plate 93 are combined to make the surface of the second strip plate 93 flush with the surface of the rotating plate 4.

[0035] like Figure 6 and Figure 7 As shown, the rotating plate 4 includes a U-shaped plate 41 and a main plate 42. The U-shaped plate 41 includes a base plate 411 and two side plates 412 respectively disposed on the upper sides of the base plate 411. The two side plates 412 are respectively disposed on both sides of the base plate 1 and are rotatably mounted on the base plate 1 by means of a pin 10. The upper part of the base plate 411 is provided with a horizontal surface 413 and an inclined surface 414 in sequence from the end near the elastic member 5 to the end away from the elastic member 5. The inclined surface 414 is inclined from the end near the horizontal surface 413 to the end away from the horizontal surface 413 toward the side away from the base plate 1. Through the structure of the horizontal surface 413 and the inclined surface 414 cooperating, the horizontal surface 413 restricts the rotation of the rotating plate 4 toward the side near the fixed plate 3, and the inclined surface 414 allows the rotating plate 4 to rotate toward the side near the handle 2. The lower part of the base plate 411 is connected to the main plate 42. The end of the main plate 42 away from the base plate 411 is provided with a second wire clamping mechanism 8. Specifically, the end of the main plate 42 away from the base plate 411 is provided with a second threaded hole 43.

[0036] like Figure 3 As shown, the first wire clamping mechanism 7 includes a first bolt 71, a first nut 72 and a first elastic washer 73. The end of the fixing plate 3 away from the base plate 1 is provided with a first threaded hole. The first bolt 71 is installed in the first threaded hole and extends to the outside of the fixing plate 3. The first elastic washer 73 and the first nut 72 are installed in sequence at the end of the first bolt 71 that extends to the outside of the fixing plate 3.

[0037] It should be noted that in this embodiment, the first bolt 71 is threadedly connected to the fixing plate 3, but the first bolt 71 and the fixing plate 3 can also be welded together.

[0038] Specifically, the first elastic washer 73 is attached to the side of the first nut 72 near the fixing plate 3, and the first elastic washer 73 is a circular washer.

[0039] In use, turn the first nut 72 outward to place a portion of the metal wire 11 between the first elastic washer 73 and the fixing plate 3. Turn the first nut 72 inward to clamp and fix a portion of the metal wire 11 between the first elastic washer 73 and the fixing plate 3. The first elastic washer 73 is used to prevent the metal wire 11 from being flattened and deformed when the first nut 72 is tightened. Turn the second nut 82 outward to place the other portion of the metal wire 11 between the second elastic washer 83 and the rotating plate 4. Turn the second nut 82 inward to clamp and fix the other portion of the metal wire 11 between the second elastic washer 83 and the rotating plate 4. The second elastic washer 83 is used to prevent the metal wire 11 from being flattened and deformed when the second nut 82 is tightened.

[0040] In this specific embodiment, the elastic component 5 is a spring. The first elastic pad 73 and the second elastic pad 83 are both polytetrafluoroethylene pads or rubber pads.

[0041] like Figure 8 As shown, the polishing machine also includes a dual-output shaft motor 13 and a protective cover 14. The dual-output shaft motor 13 is mounted on a base 17. A digital display screen 18 and a speed knob 19 are provided on the front side of the base 17. The grinding wheel 15 and the polishing wheel 16 are respectively fixedly mounted on the two power output shafts of the dual-output shaft motor 13. The upper part of the protective cover 14 is provided with an upper opening. The protective cover 14 is fixed on the housing of the dual-output shaft motor 13 and covers the outside of the lower part of the grinding wheel 15.

[0042] In this embodiment, the protective cover 14 covers the lower two-thirds of the grinding wheel 15, while the upper one-third of the grinding wheel 15 is on the outside, which facilitates the friction of the metal wire 11 from above. That is, without affecting the operation of the grinding wheel 15, it reduces the possibility of fragments generated by cracks in the grinding wheel 15 flying to the outside, thus improving the safety performance of the polishing machine.

[0043] When using grinding wheel 15, to prevent friction debris from splashing onto the operator, the rotation direction of the polishing machine needs to be adjusted according to the situation. If the operator is facing... Figure 8 In the direction of the polishing machine, the upper end of the grinding wheel 15 should rotate in the direction away from the operator.

[0044] This embodiment also provides a wire tipping process based on a wire tipping device, including the following steps: Step 1, as follows Figure 1 As shown, the metal wire 11 is initially wound on the winding reel 12, and a section of the metal wire 11 is released from the winding reel 12. A portion of the metal wire 11 is clamped and fixed to the fixed plate 3 by the first wire clamping mechanism 7, and another portion of the metal wire 11 is clamped and fixed to the rotating plate 4 by the second wire clamping mechanism 8. The metal wire 11 located between the fixed plate 3 and the rotating plate 4 is in a slack state, that is, the metal wire 11 cannot be taut after initial fixing. The remaining metal wire 11 is guided away from the polishing machine by the wire guiding mechanism 9.

[0045] If the metal wire 11 is stretched too tightly, the contact friction surface between the metal wire 11 and the grinding wheel 15 or polishing wheel 16 in step two will be too small, almost just a single point. This will result in the metal wire 11 having an excessively short red-hot softening zone, leading to an excessively short cone tip after rolling, which is not conducive to die threading. Therefore, when grinding the metal wire 11, it is necessary to ensure that a certain length of the metal wire 11 is in close contact with the grinding wheel 15 or polishing wheel 16 for friction.

[0046] Step 2: Start the polishing machine and adjust it to an appropriate speed. Move the hand-held fixing device above the polishing machine and press the metal wire 11 fixed between the fixing plate 3 and the rotating plate 4 against the grinding wheel 15 or the polishing wheel 16, so that the metal wire 11 is rubbed and softened by red heat.

[0047] Step 3: Continue pressing down on the fixing device until the metal wire 11 is broken by tension. A smooth, burr-free, slender, tapered tip will be obtained at the break, completing the tipping process. Immediately after the metal wire 11 breaks, lift the fixing device to prevent the polishing machine from rubbing against it. If pressing down on the fixing device alone is insufficient to break the metal wire 11, such as... Figure 2 As shown, the rotating plate 4 is turned toward the side closer to the handle 2, so that the metal wire 11 is taut until it breaks, thus completing the tipping.

[0048] In this embodiment, the metal wires 11 of different diameters were tipped, specifically including the following situations.

[0049] The copper alloy wire with a diameter of 0.15mm is tipped so that it can pass through a die with a diameter of 0.14mm. After the tip of the copper alloy wire passes through the die, a longer section of the wire can still be exposed, making it easy to use pliers to pull it out for the next step of wire drawing.

[0050] After the tip of a 0.5mm diameter copper alloy wire is rolled, the tip becomes a narrow, elongated cone shape. After the rolling process, the tip can easily pass through a 0.46mm diameter die, and can also pass directly through dies with diameters of 0.44mm, 0.4mm, and 0.38mm.

[0051] When a copper alloy wire with a diameter of 1mm is rolled into a point, the tip protrudes slightly after passing through a die with a diameter of 0.9mm, but it can still be easily pulled out with pliers with almost no impact.

[0052] However, for thicker copper alloy wires with a diameter of 2mm, the device and process described in this embodiment cannot produce a smooth, conical tip. Instead, it results in a narrow, wedge-shaped tip that is flattened by the grinding wheel 15, unsuitable for direct die-cutting. However, after slightly polishing and refining the wedge-shaped tip with the grinding wheel 15, it can still be die-cut and drawn. Therefore, the device and process described in this embodiment can process metal wires 11 with a diameter of 1mm to 2mm, but the tip needs to be polished and refined after tip-cutting. For metal wires 11 with a diameter greater than 2mm, the device and process described in this embodiment are no longer applicable; a traditional tip-cutting machine with rollers is more suitable.

[0053] As can be seen, the device in this embodiment is suitable for tipping metal wires 11 with a diameter less than 1 mm, and the tipping effect is still very good for micro-wires with a diameter of 0.1 mm to 0.2 mm, thus meeting the laboratory's needs for tipping micro-wires. Its structure is simple, easy to operate, and requires minimal effort. The obtained conical tip easily passes through the die. It requires no special expertise or skill from the operator, poses no risk of electric shock, and is pollution-free, avoiding damage to the operator's respiratory tract. It is suitable for novice operators in laboratory wire drawing experiments. Simultaneously, this device can also be used in wire drawing factories.

[0054] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A wire tipping device, characterized in that, The device includes a polishing machine and a fixing device. The fixing device includes a base plate, a handle, a fixing plate, a rotating plate, an elastic component, a first wire clamping mechanism, and a second wire clamping mechanism. The handle and the fixing plate are respectively provided at both ends of the same side of the base plate. One end of the rotating plate is hinged to the base plate and located between the handle and the fixing plate. One end of the elastic component is connected to the side of the rotating plate near the fixing plate, and the other end is connected to the base plate. The first wire clamping mechanism is located at the end of the fixing plate away from the base plate and is used to clamp and fix a portion of the metal wire. The second wire clamping mechanism is located at the end of the rotating plate away from the base plate and is used to clamp and fix another portion of the metal wire. The polishing machine includes a rotatable grinding wheel and a polishing wheel. The grinding wheel or the polishing wheel is used to grind the fixed metal wire and break it to complete the tipping.

2. The wire tipping device according to claim 1, characterized in that, The fixing device also includes a U-shaped rod, which is fixed to the side of the rotating plate near the handle, and the opening of the U-shaped rod is oriented towards the rotating plate.

3. The wire tipping device according to claim 1, characterized in that, The fixing device further includes a wire guiding mechanism, one end of which is mounted on the end of the rotating plate away from the substrate and located on the side away from the fixing plate. The wire guiding mechanism is used to guide the metal wire away from the polishing machine.

4. The wire tipping device according to claim 3, characterized in that, The second wire clamping mechanism includes a second bolt, a second nut, and a second elastic washer. The rotating plate has a second threaded hole at one end away from the base plate. The second bolt is installed in the second threaded hole and extends to the outside of the rotating plate. The second elastic washer and the second nut are installed in sequence at the end of the second bolt extending to the outside of the rotating plate. The wire guiding mechanism has a through hole for the second bolt to pass through and is located between the rotating plate and the head of the second bolt.

5. The wire tipping device according to claim 4, characterized in that, The wire guide mechanism includes a first strip plate, an inclined plate, a second strip plate, and a rectangular tube. The first strip plate has a through hole located between the rotating plate and the head of the second bolt. One end of the first strip plate away from the rotating plate is connected to one end of the inclined plate, and the other end of the inclined plate is connected to one end of the second strip plate. The other end of the second strip plate is connected to the rectangular tube. The length directions of the first strip plate, the second strip plate, and the rectangular tube are all consistent. The bottom surface of the rectangular tube is flush with the second strip plate, and the top surface of the rectangular tube has a strip hole penetrating both ends.

6. The wire tipping device according to claim 1, characterized in that, The rotating plate includes a U-shaped plate and a main plate. The U-shaped plate includes a base plate and two side plates respectively disposed on the upper sides of the base plate. The two side plates are respectively disposed on both sides of the substrate and are rotatably mounted on the substrate by means of pins. The upper part of the base plate has a horizontal surface and an inclined surface arranged sequentially from the end near the elastic member to the end away from the elastic member. The inclined surface is inclined from the end near the horizontal surface to the end away from the horizontal surface toward the side away from the substrate. The lower part of the base plate is connected to the main plate. The end of the main plate away from the base plate is provided with the second wire clamping mechanism.

7. The wire tipping device according to claim 1, characterized in that, The first wire clamping mechanism includes a first bolt, a first nut, and a first elastic washer. The end of the fixing plate away from the base plate is provided with a first threaded hole. The first bolt is installed in the first threaded hole and extends to the outside of the fixing plate. The first elastic washer and the first nut are installed in sequence at the end of the first bolt extending to the outside of the fixing plate.

8. The wire tipping device according to claim 1, characterized in that, The elastic component is a spring.

9. The wire tipping device according to claim 1, characterized in that, The polishing machine also includes a dual-output shaft motor and a protective cover. The grinding wheel and the polishing wheel are respectively fixedly sleeved on the two power output shafts of the dual-output shaft motor. The upper part of the protective cover is provided with an upper opening. The protective cover is fixed to the housing of the dual-output shaft motor and covers the outside of the lower part of the grinding wheel.

10. A wire tipping process based on the wire tipping apparatus as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Clamp and fix a portion of the metal wire to the fixed plate using the first wire clamping mechanism, clamp and fix the other portion of the metal wire to the rotating plate using the second wire clamping mechanism, and leave the metal wire located between the fixed plate and the rotating plate in a relaxed state; Step 2: Start the polishing machine, hold the fixing device and move it above the polishing machine, press the metal wire fixed between the fixing plate and the rotating plate against the grinding wheel or the polishing wheel, so that the metal wire is rubbed and softened by red heat; Step 3: Continue pressing down on the fixing device until the metal wire is broken by tension. A smooth, burr-free, slender, tapered tip can be obtained at the break point, completing the tipping process. If pressing down on the fixing device alone is insufficient to break the metal wire, turn the rotating plate towards the side closer to the handle to tighten the metal wire until it breaks, completing the tipping process.

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