A portable wire cutting sampler

Abstract

The embodiment of the present invention discloses a portable wire cutting sampling machine, including a cutting feed mechanism, a wire feeding mechanism, a pulse power supply and a water supply device, wherein the cutting feed mechanism includes a stepping displacement platform for lifting, the wire feeding mechanism includes a wire feeding bracket, a micro damper, a micro wire feeding motor and an electrode wire, a first guide wheel is arranged below the micro damper, a second guide wheel is arranged below the micro wire feeding motor, one end of the electrode wire is connected to the micro damper, and the other end is passed around the first guide wheel and the second guide wheel in sequence, and is wound around the micro wire feeding motor, so that the electrode wire between the first guide wheel and the second guide wheel is used for cutting, the pulse power supply is used to apply a pulse voltage to the contact part between the electrode wire and the workpiece, and water is supplied by the water supply device. The present invention uses the principle of electric spark discharge cutting to cut the workpiece, and the whole is a compact structure composed of small devices, which is easy to carry and convenient for cutting and sampling large equipment or large workpieces.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of non-destructive testing, and in particular to a portable wire cutting sampler. Background Art

[0002] In the petrochemical, coal chemical, thermal power and nuclear power industries, the on-site regular inspection of material degradation of in-service equipment often involves the detection of local performance on site. In addition to various non-destructive testing methods, the most direct method is to cut part of the material in a minimally invasive manner for metallographic, hardness and mechanical property analysis. However, the devices currently capable of cutting materials are usually large machine tools, and are mainly used for cutting small workpieces. There is a lack of portable devices for cutting large equipment or large workpieces. Summary of the invention

[0003] To this end, an embodiment of the present invention provides a portable wire cutting sampling machine to solve the problem in the prior art of lack of portable devices for cutting and sampling large equipment or large workpieces.

[0004] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0005] According to a first aspect of an embodiment of the present invention, a portable wire cutting sampling machine comprises:

[0006] A cutting feed mechanism, the cutting feed mechanism comprising a stepping displacement platform for being fixed on the surface of a workpiece and realizing lifting and lowering;

[0007] A wire-feeding mechanism, the wire-feeding mechanism comprising a wire-feeding bracket, a micro damper, a micro wire-feeding motor and an electrode wire, the wire-feeding bracket being mounted on a stepping displacement platform, the micro damper and the micro wire-feeding motor being fixed on both sides of the wire-feeding bracket respectively, for the micro damper to release the wire, and the micro wire-feeding motor to reel in the wire, a first guide wheel mounted on the bottom of the wire-feeding bracket being arranged below the micro damper, a second guide wheel mounted on the bottom of the wire-feeding bracket being arranged below the micro wire-feeding motor, one end of the electrode wire being wound around the output shaft of the micro damper, the other end being wound around the first guide wheel and the second guide wheel in sequence, and being wound around the output shaft of the micro wire-feeding motor, for the electrode wire between the first guide wheel and the second guide wheel to contact the part of the workpiece to be cut;

[0008] A pulse power supply, the pulse power supply is used to apply a pulse voltage to the contact part between the electrode wire and the workpiece to form an electric spark, wherein the second guide wheel is provided with an electrode terminal for externally connecting the pulse power supply;

[0009] The water supply device comprises a micro submersible pump and a universal water pipe. The micro submersible pump is placed in an external water basin. The nozzle at one end of the universal water pipe is connected to the water outlet of the micro submersible pump, and the nozzle at the other end is arranged facing the contact part between the electrode wire and the workpiece.

[0010] Furthermore, the stepping displacement table includes a stepping motor, a support frame, a lead screw and a slide. The support frame is vertically arranged, the lead screw is vertically installed on the support frame, the slide is horizontally arranged on one side of the support frame and is threadedly connected to the lead screw for installation of the wire feeding bracket, and the output end of the stepping motor is connected to the bottom end of the lead screw for driving the slide to move up and down along the axial direction of the lead screw.

[0011] Furthermore, the cutting feed mechanism also includes a magnetic base, the stepping platform is fixed on the magnetic base, and the magnetic base is used to be fixed on the surface of the ferromagnetic workpiece by magnetic attraction.

[0012] Furthermore, the wire-moving bracket includes a base plate and a main frame fixedly connected to the base plate, the main frame presents a C-shaped frame structure with an opening toward the base plate, a first longitudinal beam arranged in parallel is provided on the inner side of the left side wall of the main frame, a second longitudinal beam arranged in parallel is provided on the inner side of the right side wall of the main frame, and one end of the two longitudinal beams is fixedly connected to the top wall of the main frame, and the other end is fixedly connected to the base plate, for forming a wire-receiving area between the first longitudinal beam and the left side wall of the main frame, and a wire-releasing area between the second longitudinal beam and the right side wall of the main frame, the miniature damper is fixedly connected to the right side wall of the main frame, and its output shaft horizontally passes through the right side wall of the main frame and is rotatably connected to the second longitudinal beam, and the miniature wire-moving motor is fixedly connected to the first longitudinal beam, and its output shaft horizontally passes through the first longitudinal beam and is rotatably connected to the left side wall of the main frame.

[0013] Furthermore, the middle portion of the base plate is recessed upward between the first longitudinal beam and the second longitudinal beam, and forms an assembly groove for being mounted on the stepping translation stage, the assembly groove is a C-shaped structure with an opening facing downward, the first guide wheel and the second guide wheel are respectively mounted on the outer edges on both sides of the base plate slot, and through holes for the electrode wire to pass through and wrap around the guide wheels are respectively provided on the horizontal plate surfaces on both sides of the base plate.

[0014] Furthermore, electrical insulating patches are arranged on the side wall surfaces of the wire travel support, the first longitudinal beam and the second longitudinal beam.

[0015] Furthermore, a micro-wiring device is installed in the wire-receiving area of ​​the wire-moving bracket, and the micro-wiring device is arranged below the output shaft of the micro-wire-moving motor, so as to evenly wind the electrode wire around the output shaft of the micro-wire-moving motor through the micro-wiring device after the electrode wire passes around the first guide wheel.

[0016] Furthermore, the micro wiring device includes a winding stepper motor, a micro screw and a winding wire guide, the micro screw is horizontally arranged in the wire taking-up area, and its two ends are rotatably connected to the left side wall of the main frame and the first longitudinal beam respectively, the winding wire guide is threadedly connected to the micro screw, and a vertical channel is opened inside the winding wire guide for the electrode wire to run from the bottom of the winding wire guide to the top of the winding wire guide, the winding stepper motor is fixedly connected to the left side wall of the main frame, and the output shaft of the winding stepper motor is fixedly connected to the micro screw, which is used to drive the winding wire guide to reciprocate along the axial direction of the micro screw, wherein micro guide rods are provided above and below the micro screw and horizontally pass through the winding wire guide.

[0017] Furthermore, micro limit switches are provided on both sides of the winding wire guide, one of which is installed on the left side wall of the main frame, and the other is installed on the first longitudinal beam, and the two micro limit switches are electrically connected to the winding stepper motor, so as to activate the contact action of the micro limit switch after colliding with the winding wire guide and control the direction of the winding stepper motor.

[0018] Furthermore, a control box for controlling the motor speed is installed on the outer wall of the main frame. The control box is electrically connected to the micro wire-feeding motor and the winding stepping motor respectively, and is used to control the synchronous rotation of the micro wire-feeding motor and the winding stepping motor.

[0019] The embodiment of the present invention has the following advantages: by setting a cutting feed mechanism, a wire feeding mechanism, a pulse power supply and a water supply device, the wire feeding mechanism is fixed on the stepping platform through a wire feeding bracket so that it can be raised and lowered with the stepping platform, and the wire feeding is completed by a micro damper, a micro wire feeding motor, a first guide wheel and a second guide wheel installed on the wire feeding bracket. It is only necessary to fix the stepping platform on the horizontal surface of a large device or a large workpiece, and make the electrode wire between the first guide wheel and the second guide wheel contact the part to be cut of the workpiece. By applying a pulse power supply at the cutting part, the electric spark discharge cutting principle between the electrode wire and the workpiece is used to realize the cutting function of the metal on the surface of the workpiece, and the electrode wire is driven to perform a cutting feed action as the stepping platform moves. At the same time, the submersible pump is turned on to supply water, and the universal water pipe is adjusted so that the water flows directly to the contact position between the electrode wire and the workpiece, thereby achieving the effect of cooling and lubrication. The structure is simple, and the overall structure is a compact structure composed of small devices. Compared with large cutting machine tools, it is easy to carry and convenient for cutting and obtaining materials from large equipment or large workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 A schematic diagram of the overall structure of a portable wire cutting sampling machine provided by an embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram of a wire-feeding mechanism of a portable wire-cut sampling machine provided in an embodiment of the present invention.

[0024] In the figure: 1. cutting feed mechanism; 11. stepping displacement stage; 111. support frame; 112. lead screw; 113. slide; 12. magnetic base; 2. wire feeding mechanism; 21. wire feeding bracket; 211. bottom plate; 2111. assembly groove; 212. main frame; 213. first longitudinal beam; 214. second longitudinal beam; 22. micro damper; 221. first guide wheel; 23. micro wire feeding motor; 231. second guide wheel; 24. electrode wire; 3. pulse power supply; 31. electrode terminal; 4. water supply device; 41. micro submersible pump; 42. universal water pipe; 5. micro wiring device; 51. winding stepping motor; 52. micro screw; 53. winding wire guide; 54. micro guide rod; 55. micro limit switch; 6. control box; 7. electrical insulation patch. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figure 1 and Figure 2 As shown, the embodiment of the present invention provides a portable wire cutting sampling machine, including a cutting feeding mechanism 1, a wire feeding mechanism 2, a pulse power supply 3 and a water supply device 4, which are specifically configured as follows:

[0028] The cutting feed mechanism 1 includes a stepping platform 11 for fixing on the surface of the workpiece and realizing lifting and lowering, and a magnetic base 12 installed at the bottom of the stepping platform 11. Specifically, the stepping platform 11 includes a stepping motor, a support frame 111, a lead screw 112 and a slide 113. The support frame 111 is vertically arranged, the lead screw 112 is vertically installed on the support frame 111, and the slide 113 is horizontally arranged on one side of the support frame 111 and is threadedly connected to the lead screw 112 for installation of the wire mechanism 2. The output end of the stepping motor is connected to the bottom end of the lead screw 112 to drive the slide 113 to reciprocate up and down along the axial direction of the lead screw 112. The magnetic base 12 is fixed to the bottom of the support frame 111. By using the principle of magnetic attraction, the magnetic base 12 can be fixed on the surface of any ferromagnetic equipment or workpiece by magnetic attraction, so that the stepping platform 11 with the wire mechanism 2 installed can be quickly fixed on large equipment or large workpieces.

[0029] The wire-moving mechanism 2 includes a wire-moving support 21, a micro damper 22, a micro wire-moving motor 23, and an electrode wire 24. The wire-moving support 21 is mounted on the stepping platform 11, and includes a bottom plate 211 and a main frame 212 fixedly connected to the bottom plate 211. The main frame 212 is a C-shaped frame structure with an opening facing the bottom plate 211. A first longitudinal beam 213 arranged in parallel is provided on the inner side of the left side wall of the main frame 212, and a second longitudinal beam 214 arranged in parallel is provided on the inner side of the right side wall of the main frame 212. One end of the two longitudinal beams is fixedly connected to the top wall of the main frame 212, and the other end is fixedly connected to the bottom plate 211, so that a retracting space is formed between the first longitudinal beam 213 and the left side wall of the main frame 212. A wire-laying area is formed between the second longitudinal beam 214 and the right side wall of the main frame 212, wherein the middle part of the bottom plate 211 is recessed upward between the first longitudinal beam 213 and the second longitudinal beam 213, and forms an assembly groove 2111 for cooperating with the assembly groove 2111 mounted on the slide 113, and the assembly groove 2111 is a C-shaped structure with an opening downward, and the wire-feeding mechanism 2 can be quickly fixed on the stepping displacement table 11 by simply mounting the bottom plate 211 of the wire-feeding bracket 21 on the slide 113 along the assembly groove 2111 and then fixing it with bolts. The micro damper 22 and the micro wire-moving motor 23 are respectively fixed on both sides of the wire-moving bracket 21, and are used for the micro damper 22 to release the wire and the micro wire-moving motor 23 to reel in the wire. Specifically, the micro damper 22 is fixedly connected to the right side wall of the main frame 212, and its output shaft horizontally passes through the right side wall of the main frame 212 and is rotatably connected to the second longitudinal beam 214. The micro wire-moving motor 23 is fixedly connected to the first longitudinal beam 213, and its output shaft horizontally passes through the first longitudinal beam 213 and is rotatably connected to the left side wall of the main frame 212. A first guide wheel 221 installed at the bottom of the wire travel support 21 is also provided below the micro damper 22, and a second guide wheel 231 installed at the bottom of the wire travel support 21 is provided below the micro wire travel motor 23. One end of the electrode wire 24 is wound around the output shaft of the micro damper 22, and the other end of the electrode wire 24 is passed around the first guide wheel 221 and the second guide wheel 231 in sequence, and is wound around the output shaft of the micro wire travel motor 23, so that the electrode wire 24 between the first guide wheel 221 and the second guide wheel 231 is used for cutting, and is contacted with the part to be cut of the workpiece, and driven by the stepping stage 11, the electrode wire 24 performs cutting feeding action. Among them, the first guide wheel 221 and the second guide wheel 231 are respectively installed on the outer edges of both sides of the notch of the bottom plate 211, and through holes for the electrode wire 24 to pass through and be wound around the guide wheels are respectively opened on the horizontal plate surfaces on both sides of the bottom plate 211.

[0030] The pulse power supply 3 is a universal portable electric spark machining power supply with a power of 300 to 800 watts, which is used to apply a pulse voltage to the contact point between the electrode wire 24 and the workpiece to form an electric spark, wherein an electrode terminal 31 for an external pulse power supply 3 is arranged on the second guide wheel 231, thereby utilizing the electric spark discharge cutting principle between the electrode wire 24 and the workpiece to realize the cutting function of the metal on the surface of the workpiece, and the miniature damper 22 is used to store the undischarged electrode wire 24 and control the tension of the electrode wire 24, and the miniature wire-feeding motor 23 is used to drive the wire-feeding action of the electrode wire 24 and store the discharged electrode wire 24. The water supply device 4 includes a micro submersible pump 41 and a universal water pipe 42. The micro submersible pump 41 is placed in an external water basin, and the nozzle of one end of the universal water pipe 42 is connected to the water outlet of the micro submersible pump 41. Then, the nozzle of the other end of the universal water pipe 42 is manually adjusted to face the contact position between the electrode wire 24 and the workpiece, so that the water flows through the contact position between the electrode wire and the workpiece, thereby performing a cutting feeding action on the electrode wire 24. At the same time, the micro submersible pump 41 is turned on to supply water, which has the effect of cooling and lubricating. Preferably, the side wall surfaces of the wire support 21, the first longitudinal beam 213 and the second longitudinal beam 214 are uniformly provided with electrical insulating patches 7.

[0031] As described above, the wire-feeding action of the electrode wire 24 is as follows: driven by the rotation and winding of the micro-wire-feeding motor 23, the undischarged electrode wire 24 is pulled out from the micro-damper 22, passes through the first guide wheel 221, and slides across the near surface of the workpiece to participate in electric spark discharge cutting, and then passes through the second guide wheel 231 and is wound and recovered by the micro-wire-feeding motor 23.

[0032] The feeding action of the wire feeding mechanism 2 during the electric spark wire cutting process is as follows: while the electrode wire 24 and the workpiece are electrically sparking, the pulse power supply 3 monitors the discharge voltage and current, and adjusts the position of the slide 113 of the stepping displacement table 11 in real time according to the changes in voltage and current, so that it slowly moves intermittently toward the workpiece, and the wire feeding bracket 21 of the wire feeding mechanism 2 is fixed to the slide 113 and moves therewith, thereby completing the feeding action.

[0033] The embodiment of the present invention is provided with a cutting feed mechanism 1, a wire feeding mechanism 2, a pulse power supply 3 and a water supply device 4, and the wire feeding mechanism 2 is fixed on the stepping displacement platform 11 through a wire feeding bracket 21, so that it can be lifted and lowered along with the stepping displacement platform 11, and the wire feeding is completed by a micro damper 22, a micro wire feeding motor 23, a first guide wheel 221 and a second guide wheel 231 installed on the wire feeding bracket 21. It is only necessary to fix the stepping displacement platform 11 on the horizontal surface of a large device or a large workpiece, and to contact the electrode wire 24 between the first guide wheel 221 and the second guide wheel 231 with the workpiece to be fed. The cutting part applies a pulse power supply 3 at the cutting part, utilizes the principle of electric spark discharge cutting between the electrode wire 24 and the workpiece to realize the cutting function of the metal on the surface of the workpiece, and drives the electrode wire 24 to perform cutting feeding action as the stepping displacement table 11 moves. At the same time, the submersible pump 41 is turned on to supply water, and the universal water pipe 42 is adjusted to make the water flow directly toward the contact position between the electrode wire 24 and the workpiece, thereby achieving the effect of cooling and lubrication. The structure is simple, and the overall structure is a compact structure composed of small devices. Compared with large cutting machine tools, it is easy to carry and convenient for cutting and obtaining materials from large equipment or large workpieces.

[0034] Example 2

[0035] The difference from Example 1 is that Figure 2As shown, a micro-wiring device 5 is installed in the wire-receiving area of ​​the wire-moving bracket 21, and the micro-wiring device 5 is arranged below the output shaft of the micro-wire-moving motor 23, so as to allow the electrode wire 24 to pass around the first guide wheel 221 and then be evenly wound around the output shaft of the micro-wire-moving motor 23 through the micro-wiring device 5. Specifically, the micro wiring device 5 includes a winding stepper motor 51, a micro screw 52 and a winding wire guide 53. The micro screw 52 is horizontally arranged in the wire taking-up area, and its two ends are rotatably connected to the left side wall of the main frame 212 and the first longitudinal beam 213 respectively. The winding wire guide 53 is threadedly connected to the micro screw 52, ​​and a vertical channel is opened inside the winding wire guide 53 for the electrode wire 24 to run from the bottom of the winding wire guide 53 to the top of the winding wire guide 53. The winding stepper motor 51 is fixedly connected to the left side wall of the main frame 212, and the output shaft of the winding stepper motor 51 is fixedly connected to the end of the micro screw 52. The winding stepper motor 51 is used to drive the winding wire guide 53 to reciprocate along the axial direction of the micro screw 52, ​​so that the electrode wire 24 can be evenly collected on the output shaft of the micro wire-feeding motor 23. Preferably, micro guide rods 54 are provided above and below the micro screw 52, ​​which pass through the winding guide 53 horizontally, so as to prevent the winding guide 53 from shaking and ensure that the winding guide 53 can move left and right stably. Preferably, a control box 6 for controlling the motor speed is installed on the outer wall of the main frame 212, and the controller in the control box 6 is electrically connected to the micro wire-moving motor 23 and the winding stepping motor 51 respectively, and a controller is used to control them simultaneously, so that the micro wire-moving motor 23 and the winding stepping motor 51 can rotate synchronously, ensuring that the wire-moving speed matches the winding reciprocating motion.

[0036] As described above, micro limit switches 55 are provided on both sides of the winding wire guide 53, one of which is installed on the left side wall of the main frame 212, and the other micro limit switch 55 is installed on the first longitudinal beam 213, and the two micro limit switches 55 are electrically connected to the winding stepping motor 51, so that the micro limit switch 55 starts the contact action after colliding with the winding stepping motor 51, and controls the direction of the winding stepping motor 51. That is, when the winding wire guide 53 moves to the left to the stop position and hits the micro limit switch 55 on the left side wall of the main frame 212, the contact of the micro limit switch 55 is actuated, and the winding stepping motor 51 is controlled to reverse, driving the winding wire guide 53 to move to the right. Similarly, when the winding wire guide 53 moves to the right to the stop position and hits the micro limit switch 55 on the first longitudinal beam 213, the contact of the micro limit switch 55 is actuated, and the winding stepping motor 51 is controlled to reverse, driving the winding wire guide 53 to move to the left.

[0037] The micro-wiring device 5 and the micro-wire-moving motor 23 jointly complete the winding recovery action, specifically: the micro-wire-moving motor 23 recovers the electrode wire 24 in a rotating winding manner, and at the same time, the micro-wiring device 5 controls the electrode wire 24 to reciprocate along the output shaft of the micro-wire-moving motor through its winding wire guide 53, thereby ensuring that the electrode wire is evenly distributed on the output shaft of the micro-wire-moving motor 23.

[0038] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A portable wire cutting sampler, characterized in that: The portable wire cutting sampler comprises: A cutting feed mechanism (1), the cutting feed mechanism (1) comprising a stepping displacement platform (11) for being fixed on a workpiece surface and realizing lifting and lowering; A wire-travelling mechanism (2), the wire-travelling mechanism (2) comprising a wire-travelling support (21), a micro damper (22), a micro wire-travelling motor (23) and an electrode wire (24), the wire-travelling support (21) being mounted on a stepping platform (11), the micro damper (22) and the micro wire-travelling motor (23) being respectively fixed on both sides of the wire-travelling support (21), and being used for the micro damper (22) to release the wire, and the micro wire-travelling motor (23) to reel in the wire, and a micro damper (22) being mounted on the bottom of the wire-travelling support (21) being provided below the micro damper (22). A first guide wheel (221) is provided on the micro-wire motor (23); a second guide wheel (231) is provided below the micro-wire motor (23) and is installed at the bottom of the wire support (21); one end of the electrode wire (24) is wound around the output shaft of the micro-damper (22); the other end of the electrode wire (24) is wound around the first guide wheel (221) and the second guide wheel (231) in sequence, and is wound around the output shaft of the micro-wire motor (23), so that the electrode wire (24) between the first guide wheel (221) and the second guide wheel (231) contacts the part to be cut of the workpiece; A pulse power supply (3), the pulse power supply (3) being used to apply a pulse voltage to a contact portion between the electrode wire (24) and the workpiece to form an electric spark, wherein an electrode terminal (31) for externally connecting the pulse power supply (3) is arranged on the second guide wheel (231); A water supply device (4), the water supply device (4) comprising a micro submersible pump (41) and a universal water pipe (42), the micro submersible pump (41) being placed in an external water basin, the pipe mouth at one end of the universal water pipe (42) being connected to the water outlet of the micro submersible pump (41), and the pipe mouth at the other end being arranged facing the contact portion between the electrode wire (24) and the workpiece; The cutting feed mechanism (1) further comprises a magnetic base (12), the stepping platform (11) is fixed on the magnetic base (12), and the magnetic base (12) is used to be fixed on the surface of a ferromagnetic workpiece by magnetic attraction; The wire walking support (21) comprises a bottom plate (211) and a main frame (212) fixedly connected to the bottom plate (211), wherein the main frame (212) is a C-shaped frame structure with an opening facing the bottom plate (211), a first longitudinal beam (213) arranged in parallel is provided on the inner side of the left side wall of the main frame (212), and a second longitudinal beam (214) arranged in parallel is provided on the inner side of the right side wall of the main frame (212), and one end of the two longitudinal beams is fixedly connected to the top wall of the main frame (212), and the other end is fixedly connected to the bottom plate (211), and the first longitudinal beam (213) is provided to the inner side of the right side wall of the main frame (212). 13) and the left side wall of the main frame (212) form a wire taking-up area, and the second longitudinal beam (214) and the right side wall of the main frame (212) form a wire releasing area, the micro damper (22) is fixedly connected to the right side wall of the main frame (212), and its output shaft horizontally passes through the right side wall of the main frame (212) and is rotatably connected to the second longitudinal beam (214), and the micro wire-moving motor (23) is fixedly connected to the first longitudinal beam (213), and its output shaft horizontally passes through the first longitudinal beam (213) and is rotatably connected to the left side wall of the main frame (212); A micro-wiring device (5) is installed in the wire-receiving area of ​​the wire-moving support (21), and the micro-wiring device (5) is arranged below the output shaft of the micro-wire-moving motor (23) and is used for the electrode wire (24) to be evenly wound around the output shaft of the micro-wire-moving motor (23) through the micro-wiring device (5) after the electrode wire (24) passes around the first guide wheel (221); The micro wiring device (5) comprises a winding stepping motor (51), a micro screw (52) and a winding wire guide (53). The micro screw (52) is horizontally arranged in a wire receiving area, and its two ends are respectively rotatably connected to the left side wall of the main frame (212) and the first longitudinal beam (213). The winding wire guide (53) is threadedly connected to the micro screw (52), and a supply electrode wire (24) is provided inside the winding wire guide (53) for the winding wire guide (53). A vertical channel extends downwardly toward the top of the winding guide (53), wherein the winding stepper motor (51) is fixedly connected to the left side wall of the main frame (212), and the output shaft of the winding stepper motor (51) is fixedly connected to the micro screw (52) for driving the winding guide (53) to reciprocate along the axial direction of the micro screw (52), wherein micro guide rods (54) are provided above and below the micro screw (52) and horizontally pass through the winding guide (53).

2. A portable wire cutting sampling machine according to claim 1, characterized in that: The stepping displacement platform (11) comprises a stepping motor, a support frame (111), a lead screw (112) and a slide (113); the support frame (111) is arranged vertically, the lead screw (112) is vertically mounted on the support frame (111), the slide (113) is horizontally arranged on one side of the support frame (111) and is threadedly connected to the lead screw (112) for mounting a wire travel bracket (21); the output end of the stepping motor is connected to the bottom end of the lead screw (112) for driving the slide (113) to move up and down along the axial direction of the lead screw (112).

3. A portable wire cutting sampling machine according to claim 1, characterized in that: The middle portion of the bottom plate (211) is concave upwards between the first longitudinal beam (213) and the second longitudinal beam (214), and forms an assembly groove (2111) for mounting on the stepping displacement stage (11); the assembly groove (2111) is a C-shaped structure with an opening facing downwards; the first guide wheel (221) and the second guide wheel (231) are respectively mounted on the outer edges of both sides of the groove of the bottom plate (211); and through holes for the electrode wire (24) to pass through and be wound around the guide wheels are respectively provided on the horizontal plate surfaces on both sides of the bottom plate (211).

4. A portable wire cutting sampling machine according to claim 1, characterized in that: Electrically insulating patches (7) are arranged on the side wall surfaces of the wire support (21), the first longitudinal beam (213) and the second longitudinal beam (214).

5. The portable wire cutting sampling machine according to claim 1, characterized in that: Micro limit switches (55) are provided on both sides of the winding wire guide (53), wherein one micro limit switch (55) is installed on the left side wall of the main frame (212), and the other micro limit switch (55) is installed on the first longitudinal beam (213), and the two micro limit switches (55) are electrically connected to the winding stepping motor (51), so as to start contact action after the micro limit switch (55) collides with the winding wire guide (53) and control the direction of the winding stepping motor (51).

6. A portable wire cutting sampling machine according to claim 5, characterized in that: A control box (6) for controlling the motor speed is installed on the outer wall of the main frame (212); the control box (6) is electrically connected to the micro-wire motor (23) and the winding stepping motor (51) respectively, and is used to control the micro-wire motor (23) and the winding stepping motor (51) to rotate synchronously.

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