Wire saw semi-automatic threading device and threading method

Abstract

The application discloses a kind of wire cutting semi-automatic threading device and threading method, it includes: processing platform, is provided with threading hole on it;Roller is adjacent to processing platform, and the side of roller close to processing platform is provided with burning wire electrode;Damper is arranged above processing platform;Clamp wire mechanism is arranged below processing platform, and clamp wire mechanism has clamp wire gas claw that can move between roller and processing platform;Wherein, the two ends of electrode wire that pass through damper and threading hole in sequence are connected around roller.The application can solve the problem that automatic threading is difficult to complete at present, threading process is complex, and automatic threading technology is difficult to apply on reciprocating wire-cut electrical discharge machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric spark machining equipment, and particularly relates to a wire cutting semi-automatic wire threading device and a wire threading method for reciprocating wire. BACKGROUND

[0002] Electric spark machining is a processing method for reasonably utilizing electric corrosion. The method is used to complete material shape processing by means of material removal through pulse spark discharge between a tool electrode and a workpiece electrode. In electric spark wire cutting, the tool electrode is an electrode wire, and the workpiece electrode is a workpiece to be cut. When spark discharge occurs under the excitation of a pulse power supply, heat is generated to melt or even vaporize the workpiece. The explosion generated in this process throws the removed material away from the workpiece and carries it away by a working liquid and filters it.

[0003] Electric spark wire cutting adopts electric processing principles, and thus can process many materials that are difficult to process by ordinary processing methods, such as PCD materials with high hardness, materials with high melting points and high brittleness that are difficult to process by mechanical means, and the like. Electric spark wire cutting technology has been widely used in the fields of automobiles, aviation, machine tool production and the like due to its strong applicability, high precision and low cost.

[0004] Currently, electric spark wire cutting technology includes unidirectional wire cutting and reciprocating wire cutting. In the unidirectional wire cutting electric spark machine tool, the electrode wire is used in one direction, and is wound on a wire drum after use and then enters a waste wire box. In the reciprocating wire cutting electric spark machine tool, the electrode wire makes high-speed reciprocating motion, and can be repeatedly used. The electrode wire is wound on a roller, and the roller drives the electrode wire to make reciprocating motion up and down at the workpiece during processing.

[0005] In the actual production process of electric spark wire cutting, on the one hand, the electrode wire may be broken, and on the other hand, the electrode wire needs to be actively broken to form a hole. In these cases, the operator needs to fix the wire on a specific position of the roller, which causes interruption of the processing flow and reduction of the processing efficiency. The installation influencing factors include whether the roller is stopped at a specified position, the proficiency of the operator in clamping the wire, and the like, and the uncertainty is large, and a long time is required for adjustment. Moreover, the current automatic wire threading technology is not mature, and the control system and the overall structure have high requirements and high cost in the use process.

[0006] The current automatic wire threading technology is relatively mature in unidirectional wire cutting electric spark wire cutting. However, for reciprocating wire cutting electric spark wire cutting, the automatic wire threading is difficult to complete, the structure is complex, the success rate is limited, and it is difficult to be widely applied. Therefore, there is no automatic wire threading device for reciprocating wire cutting electric spark cutting machine tools. SUMMARY

[0007] The application aims to provide a wire cutting semi-automatic threading device and a threading method, which are applied to a reciprocating wire electric discharge machine tool, and solve the problem that it is difficult to apply automatic threading technology to the reciprocating wire electric discharge machine tool due to high difficulty in automatic threading completion and complex threading process.

[0008] The above implementation purposes of the application are mainly realized by the following technical solutions.

[0009] In one aspect, the application provides a wire cutting semi-automatic threading device, which comprises:

[0010] A machining platform, on which a threading hole is arranged;

[0011] A roller, which is arranged adjacent to the machining platform, and one side of the roller close to the machining platform is provided with a burning wire electrode;

[0012] A damper, which is arranged above the machining platform;

[0013] A wire clamping mechanism, which is arranged below the machining platform, and the wire clamping mechanism has a wire clamping air claw capable of moving between the roller and the machining platform;

[0014] Wherein, two ends of the electrode wire passing through the damper and the threading hole in sequence are spliced on the roller.

[0015] In a preferred embodiment of the application, the bottom of the machining platform is provided with a first guide wheel, and the electrode wire passing through the threading hole is spliced on the roller after passing around the first guide wheel.

[0016] In a preferred embodiment of the application, the bottom of the machining platform is provided with a guide block capable of moving along the extension direction of the electrode wire, and the first guide wheel is located on the guide block.

[0017] In a preferred embodiment of the application, the damper has two damping wheels located on both sides of the electrode wire and capable of approaching each other to clamp the electrode wire.

[0018] In a preferred embodiment of the application, a guide mechanism is arranged directly above the threading hole, the guide mechanism has an upper guide and a lower guide arranged oppositely, the electrode wire passing through the damper enters the threading hole in sequence after passing through the upper guide and the lower guide, and a workpiece to be processed is located between the upper guide and the lower guide.

[0019] In a preferred embodiment of the application, a guide rail is arranged below the machining platform, a base of the wire clamping mechanism is movably connected to the guide rail, and the wire clamping air claw is rotatably connected to the base.

[0020] In a preferred embodiment of the present application, a tension wire mechanism is further included, which is located above the machining platform, and has a movable tension wire wheel, through which the electrode wire wound on the drum passes before entering the damper.

[0021] In another aspect, the present application further provides a wire cutting semi-automatic threading method, which is implemented by using the wire cutting semi-automatic threading device as described above, and includes the following steps:

[0022] The drum is rotated counterclockwise until one end of the electrode wire contacts the wire burning electrode;

[0023] The damper is opened;

[0024] The drum and the wire burning electrode are powered to burn the electrode wire;

[0025] The drum is rotated counterclockwise until the electrode wire exits from the threading hole;

[0026] The wire clamping air claw is moved directly below the threading hole;

[0027] The electrode wire is manually threaded through the pre-made hole on the workpiece and the threading hole;

[0028] The wire clamping air claw is opened, the electrode wire passing through the threading hole is clamped and pulled to below the drum;

[0029] The electrode wire on the wire clamping air claw is manually fixed on the drum, and the damper is closed.

[0030] In a preferred embodiment of the present application, the wire clamping mechanism has a base, and the wire clamping air claw is rotatably connected to the base;

[0031] The threading method further includes:

[0032] After the wire clamping air claw is moved directly below the threading hole, the wire clamping air claw is rotated to be opposite to the threading hole;

[0033] After the wire clamping air claw is opened to clamp the electrode wire, the wire clamping air claw is rotated to reset;

[0034] After the wire clamping air claw pulls the electrode wire to below the drum, the wire clamping air claw is rotated until the electrode wire contacts the drum;

[0035] After the electrode wire on the wire clamping air claw is manually fixed on the drum, the wire clamping air claw is rotated to reset.

[0036] In a preferred embodiment of the present application, the bottom of the processing platform is provided with a guide block capable of moving along the extension direction of the electrode wire, and the guide block is provided with a first guide wheel;

[0037] The wire threading method further comprises:

[0038] Before the wire clamping air claw moves to the position directly below the wire threading hole, the guide block drives the first guide wheel to move in a direction away from the wire threading hole;

[0039] After the wire clamping air claw is opened to clamp and rotate the electrode wire back to the original position, the guide block is moved back to the position below the wire threading hole.

[0040] In a preferred embodiment of the present application, the wire cutting semi-automatic wire threading device is provided with a wire tensioning mechanism, and the wire tensioning mechanism is provided with a wire tensioning wheel capable of moving;

[0041] The wire threading method further comprises:

[0042] After the damper is closed, the wire tensioning mechanism is opened, and the tension of the electrode wire is adjusted by moving the wire tensioning wheel.

[0043] Compared with the prior art, the technical scheme of the present application has the following characteristics and advantages:

[0044] 1. The wire cutting semi-automatic wire threading device of the present application replaces the manual operation process of pulling the electrode wire by setting the damper and the wire clamping mechanism, realizes the semi-automatic wire threading of the electrode wire on the reciprocating wire cutting machine tool, and can improve the operation efficiency of the reciprocating wire cutting machine tool and effectively reduce the operation difficulty of the manual operation.

[0045] 2. The wire cutting semi-automatic wire threading method of the present application automatically completes the relatively simple steps of breaking the wire (breaking the wire during the processing process or manually breaking the wire), moving the wire from the roller to above the workpiece, moving the wire from below the workpiece to the roller, and the like, and only retains the two processes of threading the wire through the workpiece and the guide and fixing the wire on the roller which are difficult to be automatically processed for the manual operation, greatly reduces the manual operation difficulty, and improves the operation efficiency of the wire cutting machine tool. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort. In the drawings:

[0047] Figure 1The first state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0048] Figure 2 The second state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0049] Figure 3 The third state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0050] Figure 4 The fourth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0051] Figure 5 The fifth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0052] Figure 6 The sixth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0053] Figure 7 The seventh state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0054] Figure 8 The eighth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0055] Figure 9 The ninth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0056] Figure 10 The tenth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0057] Figure 11 The eleventh state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0058] Figure 12 The twelfth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0059] Figure 13 The thirteenth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0060] Figure 14 The fourteenth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0061] Figure 15 The fifteenth state schematic diagram of the wire cutting semi-automatic threading device of the present application;

[0062] Figure 16 The flow chart of the wire cutting semi-automatic threading method of the present application.

[0063] BRIEF DESCRIPTION OF DRAWINGS

[0064] 10, processing platform; 11, threading hole; 12, guide block; 13, first guide wheel; 14, conductive block;

[0065] 20, roller; 21, electrode wire; 22, consumable electrode;

[0066] 30, damper; 31, damping wheel;

[0067] 40, wire clamping mechanism; 41, base; 42, guide rail; 43, wire clamping air claw; 44, rotary air cylinder;

[0068] 50, guide mechanism; 51, upper guide; 52, lower guide;

[0069] 60, wire tensioning mechanism; 61, wire tensioning wheel;

[0070] 70, second guide wheel; 71, third guide wheel; 72, fourth guide wheel;

[0071] 80, workpiece; 81, preformed hole. DETAILED DESCRIPTION

[0072] In order to make the technical solution in the present application better understood by the person skilled in the art, the technical solution in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without making creative efforts should belong to the scope of protection of the present application.

[0073] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for the purpose of illustration only and are not intended to be limiting.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0075] Embodiment one:

[0076] The present application provides a kind of wire cutting semi-automatic threading device, it includes: processing platform 10, which is provided with threading hole 11;Roller 20, it is adjacent to processing platform 10, the side of roller 20 close to processing platform 10 is equipped with burning wire electrode 22;Damper 30, it is arranged above processing platform 10;Clamp wire mechanism 40, it is arranged below processing platform 10, clamp wire mechanism 40 has the clamp wire gas claw 43 that can move between roller 20 and processing platform 10;Wherein, the two ends of electrode wire 21 that pass through damper 30 and threading hole 11 in sequence are around on roller 20.

[0077] The wire cutting semi-automatic threading device provided by the present application, by setting damper 30 and clamp wire mechanism 40, replace the operation process of manually pulling electrode wire 21, realize the semi-automatic threading of electrode wire 21 on reciprocating wire cutting machine tool, can improve the operation efficiency of reciprocating wire cutting machine tool, while effectively reducing the operation difficulty of manual operation.

[0078] Specifically, as shown in Figure 1 The present application provides a kind of wire cutting semi-automatic threading device for reciprocating wire cutting machine tool. Roller 20 is fixed on the back side of processing platform 10, and the two ends of electrode wire 21 are respectively fixed on the two ends of roller 20, and the middle part of electrode wire 21 is not wound on roller 20;With the reciprocating rotation of roller 20, electrode wire 21 can reciprocate and cut the workpiece 80 to be processed. A plurality of guide wheels for guiding electrode wire 21 are arranged on the upper part of roller 20 and processing platform 10. In this embodiment, second guide wheel 70, third guide wheel 71 and fourth guide wheel 72 are arranged, and electrode wire 21 passes through second guide wheel 70, third guide wheel 71 and fourth guide wheel 72 in sequence and then passes through threading hole 11 on processing platform 10.

[0079] Threading hole 11 is arranged on processing platform 10 in vertical direction, and workpiece 80 to be processed is located on processing platform 10;During the processing of workpiece 80, the middle part of electrode wire 21 passes through workpiece 80 and threading hole 11, and under the driving of roller 20, electrode wire 21 reciprocates to cut workpiece 80 on processing platform 10.

[0080] Burning wire electrode 22 is arranged on the right lower side of roller 20, which is used to actively burn electrode wire 21. When the middle part of workpiece 80 needs to be processed, electrode wire 21 needs to be burned first, and then the burned electrode wire 21 is fixed and wound on roller 20 after passing through the preformed hole 81 on workpiece 80. In this embodiment, when electrode wire 21 needs to be burned, roller 20 rotates counterclockwise until the end of electrode wire 21 contacts with burning wire electrode 22 (as shown in Figure 2(as shown in the diagram), and then energize between the drum 20 and the burning electrode 22 to burn off the electrode wire 21.

[0081] A damper 30 is installed above the processing platform 10. In this embodiment, the damper 30 is located directly above the wire-threading hole 11. The electrode wire 21, which passes around the third guide wheel 71, passes through the damper 30 and then through the wire-threading hole 11 on the processing platform 10. When the damper 30 is in the open state, it can provide a certain amount of damping for the movement of the electrode wire 21, preventing the electrode wire 21 from falling off the multiple guide wheels after being actively burned out. The installation position of the damper 30 can be determined according to actual needs, as long as the damper 30 can provide a certain tension for the electrode wire 21 that passes around the guide wheel, preventing the electrode wire 21 from falling off the guide wheel.

[0082] According to one embodiment of the present invention, such as Figure 1 As shown, the damper 30 includes two damping wheels 31 located on both sides of the electrode wire 21 and able to approach each other to clamp the electrode wire 21. Before the electrode wire 21 is actively burned out, the damper 30 is activated, that is, the two damping wheels 31 approach each other to clamp the electrode wire 21, providing a certain resistance to the movement of the electrode wire 21.

[0083] According to one embodiment of the present invention, such as Figure 1 As shown, the bottom of the processing platform 10 is provided with a first guide wheel 13. The electrode wire 21, which passes through the wire-threading hole 11, is wound around the first guide wheel 13 and then onto the roller 20. The first guide wheel 13 is located at the lower part of the wire-threading hole 11. The first guide wheel 13 serves to guide the electrode wire and at the same time can prevent the electrode wire 21 from forming a large angle with the axis of the wire-threading hole 11, thereby aggravating the wear of the wire-threading hole 11.

[0084] According to one embodiment of the present invention, such as Figure 1 As shown, a guide mechanism 50 is provided directly above the wire-passing hole 11. The guide mechanism 50 has an upper guide 51 and a lower guide 52 arranged opposite each other. The electrode wire 21 passing through the damper 30 passes through the upper guide 51 and the lower guide 52 in sequence and then enters the wire-passing hole 11. The workpiece 80 to be processed is located between the upper guide 51 and the lower guide 52.

[0085] The upper guide 51 and the lower guide 52 form the processing area of ​​the workpiece 80. The upper guide 51 and the lower guide 52 guide the electrode wire 21 located in the processing area, so that the electrode wire 21 has sufficient stability in the processing area and ensures the quality of wire cutting.

[0086] Specifically, such as Figure 1As shown, the guide device is located between the damper 30 and the wire threading hole 11, wherein the lower guide 52 is fixed on the processing platform 10 and corresponds to the position of the guide hole, and the upper guide 51 is located directly above the lower guide 52.

[0087] like Figure 1 As shown, a wire clamping mechanism 40 is provided below the processing platform 10. The wire clamping mechanism 40 has a wire clamping pneumatic gripper 43 that can move between the roller 20 and the processing platform 10.

[0088] The wire clamping gripper 43 on the wire clamping mechanism 40 of the present invention can clamp the electrode wire 21 and pull the electrode wire 21, thereby replacing the manual pulling of the electrode wire 21 and realizing the semi-automatic threading of the electrode wire 21 on the reciprocating wire cutting machine. This can improve the working efficiency of the reciprocating wire cutting machine and effectively reduce the difficulty of manual operation during the operation.

[0089] Specifically, such as Figure 1 , Figures 5 to 12 As shown, a guide rail 42 is provided below the processing platform 10, and the direction of the guide rail 42 extends along the length direction of the processing platform 10. The wire clamping mechanism 40 has a wire clamping gripper 43 capable of clamping the electrode wire 21. The wire clamping gripper 43 is rotatably connected to the base 41, and the base 41 of the wire clamping mechanism 40 is movably connected to the guide rail 42. When re-threading the electrode wire 21, the electrode wire 21 that has passed through the workpiece 80 and the threading hole 11 needs to be pulled from the processing platform 10 to the position of the roller 20, such as... Figures 5 to 12 As shown, the wire clamping mechanism 40 is moved from below the drum 20 to below the processing platform 10. Then, the wire clamping gripper 43 is rotated so that the position of the wire clamping gripper 43 corresponds to the position of the wire threading hole 11 on the processing platform 10. Then, the wire clamping gripper 43 is activated to clamp the electrode wire 21. After the wire clamping gripper 43 is rotated to reset, the wire clamping mechanism 40 is moved from below the wire threading hole 11 to below the drum 20, thereby pulling the electrode wire 21 from the processing platform 10 to the drum 20.

[0090] According to one embodiment of the present invention, such as Figure 1 , Figures 5 to 11 As shown, the bottom of the processing platform 10 is provided with a guide block 12 that can move along the extension direction of the electrode wire 21, and a first guide wheel 13 is located on the guide block 12. Since the first guide wheel 13 is fixed directly below the wire-threading hole 11, the position of the first guide wheel 13 will restrict the rotation of the wire-clamping gripper 43 during the wire-clamping operation, causing the wire-clamping gripper 43 to not correspond to the position of the wire-threading hole 11. The first guide wheel 13, which is provided on the guide block 12, can move aside during the wire-clamping process of the wire-clamping gripper 43, avoiding the above problem, so that the wire-clamping gripper 43 can quickly and accurately clamp the electrode wire 21.

[0091] Specifically, the guide block 12 is located at the bottom of the machining platform 10 and can move along the length of the machining platform 10. The first guide wheel 13 is located on the guide block 12. Figures 6 to 11 As shown, when the wire clamping gripper 43 performs wire clamping operation, before the wire clamping gripper 43 moves to below the wire threading hole 11, the guide block 12 moves away from the wire threading hole 11, thereby driving the first guide wheel 13 to move away from the position directly below the wire threading hole 11, so that the rotated wire clamping gripper 43 can correspond to the position of the wire threading hole 11; after the wire clamping gripper 43 clamps the electrode wire 21 and rotates to reset, the guide block 12 moves towards the wire threading hole 11, thereby driving the first guide wheel 13 to reset.

[0092] Furthermore, such as Figure 1 As shown, a conductive block 14 is also provided on the guide block 12. The conductive block 14 is located between the wire threading hole 11 and the first guide wheel 13. The conductive block 14 is in contact with the electrode wire 21 to provide voltage for the cutting process.

[0093] According to one embodiment of the present invention, such as Figure 1 As shown, the semi-automatic wire EDM threading device of the present invention further includes a wire tensioning mechanism 60, which is located above the processing platform 10. The wire tensioning mechanism 60 has a movable wire tensioning wheel 61. The electrode wire 21, wound on the roller 20, passes through the wire tensioning wheel 61 and enters the damper 30. The wire tensioning wheel 61 on the wire tensioning mechanism 60 can adjust the tension of the electrode wire 21 in real time after the wire threading process is completed, ensuring that the tension on the electrode wire 21 is maintained within a certain range during the processing of the workpiece 80, so that the wire EDM processing can be carried out stably.

[0094] Specifically, such as Figure 1 As shown, in this embodiment, the wire tensioning mechanism 60 is located between the third guide wheel 71 and the fourth guide wheel 72. The electrode wire 21 pulled from the roller 20 passes sequentially around the second guide wheel 70, the third guide wheel 71, the wire tensioning wheel 61, and the fourth guide wheel 72 before entering the damper 30. Figure 1 As shown, in this embodiment, the moving direction of the wire tensioning wheel 61 is parallel to the moving direction of the wire clamping gripper 43. When the tension on the electrode wire 21 is small, the wire tensioning wheel 61 moves horizontally to the left; when the tension on the electrode wire 21 is large, the wire tensioning wheel 61 moves horizontally to the right. The installation position and moving direction of the wire tensioning wheel 61 can be set according to actual needs and are not specifically limited here, as long as the wire tensioning mechanism 60 can ensure stable tension on the electrode wire 21 throughout the wire cutting process.

[0095] Implementation Method Two:

[0096] like Figures 1 to 16As shown, the present application also provides a wire cutting semi-automatic threading method, which is implemented by using the wire cutting semi-automatic threading device as described in Embodiment One. The threading method described in the present application is suitable for workpieces 80 that need to be directly machined internally, i.e., suitable for machining processes that need to first thread the electrode wire 21 through the pre-made hole 81 on the workpiece 80, and then perform cutting operations inside the workpiece 80.

[0097] As shown, the threading method described in the present application includes the following steps: Figure 16

[0098] Step S1: Rotate the roller 20 counterclockwise until one end of the electrode wire 21 contacts the wire burning electrode 22;

[0099] Step S2: Turn on the damper 30;

[0100] Step S3: Apply power to the roller 20 and the wire burning electrode 22 to burn off the electrode wire 21;

[0101] Step S4: Rotate the roller 20 counterclockwise until the electrode wire 21 exits the threading hole 11;

[0102] Step S5: Move the wire clamping air claw 43 directly below the threading hole 11;

[0103] Step S6: Manually thread the electrode wire 21 through the pre-made hole 81 on the workpiece 80 and the threading hole 11;

[0104] Step S7: Turn on the wire clamping air claw 43, clamp the electrode wire 21 that has passed through the threading hole 11, and pull it to the lower side of the roller 20;

[0105] Step S8: Manually fix the electrode wire 21 on the wire clamping air claw 43 to the roller 20 and turn off the damper 30.

[0106] The wire cutting semi-automatic threading method described in the present application automatically completes the relatively simple steps of breaking the wire (breaking the wire during the machining process or manually breaking the wire), moving the electrode wire 21 from the roller 20 to the upper side of the workpiece 80, and moving the electrode wire 21 from the lower side of the workpiece 80 to the roller 20, etc. Only the two processes of threading the electrode wire 21 through the workpiece 80 and the guide, and fixing the electrode wire 21 on the roller 20, which are difficult to automate, are left to manual operation, greatly reducing the difficulty of manual operation and improving the operating efficiency of the wire cutting machine tool.

[0107] Specifically, in step S1, as shown, the wire cutting semi-automatic threading device described in the present application is in an unused state, and the electrode wire 21 is in a ready-to-use state. When the internal part of the workpiece 80 needs to be wire-cut machined, the wire needs to be broken first, as shown in Figure 1 Figure 2 ​​As shown, rotate the roller 20 counterclockwise until the electrode wire 21 at one end of the roller 20 is completely wound into the other end of the roller 20 (during normal processing, the roller 20 will not be moved too close to the two ends of the electrode wire 21 to prevent the electrode wire 21 from being pulled off), at this time, one end of the electrode wire 21 is no longer tightly attached to the surface of the roller 20, but instead moves away from the surface of the roller 20 until the electrode wire 21 contacts the burning electrode 22.

[0108] In step S2, as shown, the damper 30 is turned on, and the two damping wheels 31 move close to each other to clamp the electrode wire 21, providing a certain resistance to the movement of the electrode wire 21. Figure 2

[0109] In step S3, as shown, Figure 3 the power is turned on between the roller 20 and the burning electrode 22 to burn off the electrode wire 21, leaving a small section of the electrode wire 21 on the roller 20 as waste wire. Due to the presence of the damping provided by the damping wheels 31, the electrode wire 21 wound around the second guide wheel 70, the third guide wheel 71, the tensioning wheel 61, and the fourth guide wheel 72 still has a certain tension and will not relax and fall off from the second guide wheel 70, the third guide wheel 71, the tensioning wheel 61, and the fourth guide wheel 72.

[0110] In step S4, as shown, Figure 4 and Figure 5 continue to rotate the roller 20 counterclockwise, one end of the electrode wire 21 that has been burned off will exit from the threading hole 11 and the lower guide 52 until the one end of the electrode wire 21 is located between the upper guide 51 and the lower guide 52.

[0111] In step S5, as shown, Figure 6 and Figure 7 move the wire clamping air claw 43 in the horizontal direction, moving the wire clamping air claw 43 from below the roller 20 to below the threading hole 11.

[0112] In step S6, as shown, Figure 9 place the workpiece 80 to be processed on the processing platform 10, and then manually pass one end of the electrode wire 21 through the pre-made hole 81 on the workpiece 80, the lower guide 52, and the threading hole 11.

[0113] In step S7, as shown, Figure 12 the end of the electrode wire 21 that passed through the threading hole 11 in step S6 can contact the wire clamping air claw 43, the wire clamping air claw 43 is turned on to clamp the electrode wire 21, and then the wire clamping air claw 43 is moved in the horizontal direction to pull the electrode wire 21 from below the threading hole 11 to below the roller 20.

[0114] In step S8, as shown, Figure 14 ​and Figure 15 As shown, first, the remaining small section of waste electrode wire 21 on the roller 20 is manually removed, the electrode wire 21 on the wire clamping gripper 43 is removed and fixed on the roller 20, and then the damper 30 is turned off.

[0115] According to one embodiment of the present invention, such as Figures 8 to 10 , Figures 13 to 15 As shown, the semi-automatic wire cutting method of the present invention further includes:

[0116] like Figure 8 As shown, in step S5, after the wire clamping gripper 43 moves to directly below the wire threading hole 11, the wire clamping gripper 43 rotates to be opposite to the wire threading hole 11. In this embodiment, after the wire clamping gripper 43 moves horizontally to the right and into position, the wire clamping gripper 43 is rotated counterclockwise until the end of the wire clamping gripper 43 corresponds to the lower part of the wire threading hole 11, so that the wire clamping gripper 43 can clamp the electrode wire 21.

[0117] like Figure 10 As shown, in step S7, after the wire clamping gripper 43 opens and clamps the electrode wire 21, the wire clamping gripper 43 rotates to reset. In this embodiment, after clamping the electrode wire 21, the wire clamping gripper 43 rotates clockwise to the horizontal direction to ensure that the wire clamping gripper 43 can move smoothly in the horizontal direction and avoid the wire clamping gripper 43 being too high, which would cause interference during the horizontal movement.

[0118] like Figure 13 As shown, in step S7, after the wire clamping gripper 43 pulls the electrode wire 21 to the bottom of the roller 20, the wire clamping gripper 43 rotates until the electrode wire 21 contacts the roller 20. In this embodiment, after the wire clamping gripper 43 moves horizontally to the left and into position, it rotates counterclockwise until the electrode wire 21 contacts the roller 20, so that one end of the electrode wire 21 can be manually removed from the wire clamping gripper 43 and fixed on the roller 20.

[0119] like Figure 15 As shown, in step S8, after manually fixing the electrode wire 21 on the wire clamping gripper 43 to the roller 20, the wire clamping gripper 43 rotates to reset; in this embodiment, after removing the electrode wire 21 from the wire clamping gripper 43, the wire clamping gripper 43 rotates clockwise to reset to the horizontal direction.

[0120] According to one embodiment of the present invention, such as Figures 6 to 11 As shown, the semi-automatic wire cutting method of the present invention further includes:

[0121] like Figure 6As shown in step S5, before the wire clamping air claw 43 moves to the position directly below the threading hole 11, the guide block 12 drives the first guide wheel 13 to move away from the threading hole 11; in the embodiment, the guide block 12 is moved horizontally to the left before the wire clamping air claw 43 is moved horizontally to the right, and the guide block 12 drives the first guide wheel 13 to move away from the position below the threading hole 11, so as to facilitate the clamping operation of the wire clamping air claw 43.

[0122] As shown in step S5, before the wire clamping air claw 43 moves to the position directly below the threading hole 11, the guide block 12 drives the first guide wheel 13 to move away from the threading hole 11; in the embodiment, the guide block 12 is moved horizontally to the left before the wire clamping air claw 43 is moved horizontally to the right, and the guide block 12 drives the first guide wheel 13 to move away from the position below the threading hole 11, so as to facilitate the clamping operation of the wire clamping air claw 43. Figure 11 As shown in step S7, after the wire clamping air claw 43 clamps and rotates the electrode wire 21 to reset, the guide block 12 is moved to the position below the threading hole 11; in the embodiment, after the wire clamping air claw 43 rotates clockwise to reset, the guide block 12 is moved horizontally to the right until the first guide wheel 13 is located below the threading hole 11, so that the electrode wire 21 can be guided by the first guide wheel 13 when the wire clamping air claw 43 is moved horizontally to the left.

[0123] According to one embodiment of the present application, the wire cutting semi-automatic threading method further comprises:

[0124] After the damper 30 is closed, the wire tensioning mechanism 60 is opened, and the tension of the electrode wire 21 is adjusted by moving the wire tensioning wheel 61.

[0125] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above-described specific embodiments are only for the specific embodiments of the present application and are not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A wire saw semi-automatic threading device, characterized in that, include: A processing platform with threading holes; A roller is disposed adjacent to the processing platform, and a wire-sintering electrode is provided on the side of the roller closest to the processing platform; A damper is disposed above the machining platform; A wire clamping mechanism is disposed below the processing platform, and the wire clamping mechanism has a wire clamping pneumatic gripper that can move between the roller and the processing platform; The electrode wire, which passes through the damper and the wire-passing hole in sequence, is wound around the drum at both ends. Driven by the drum, the electrode wire reciprocates to cut the workpiece on the processing platform. With the electrode wire cut by the wire-burning electrode and pulled backward from the wire-threading hole by the roller, the end of the electrode wire is manually passed downward through the pre-made hole and the wire-threading hole on the workpiece. The wire-clamping air gripper clamps the end of the electrode wire passing through the wire-threading hole and pulls it to the bottom of the roller. The electrode wire on the wire-clamping air gripper is then manually fixed on the roller to achieve the wire breakage and re-threading operation.

2. The semi-automatic wire threading device for wire cutting according to claim 1, characterized in that, The bottom of the processing platform is provided with a first guide wheel, and the electrode wire passing through the wire threading hole is wound around the first guide wheel and then connected to the roller.

3. The semi-automatic wire threading device for wire cutting according to claim 2, characterized in that, The bottom of the processing platform is provided with a guide block that can move along the extension direction of the electrode wire, and the first guide wheel is located on the guide block.

4. The semi-automatic wire threading device for wire cutting according to claim 1, characterized in that, The damper has two damping wheels located on both sides of the electrode wire and able to approach each other to clamp the electrode wire.

5. The semi-automatic wire threading device for wire cutting according to claim 1, characterized in that, A guiding mechanism is provided directly above the wire-threading hole. The guiding mechanism has an upper guide and a lower guide arranged opposite each other. The electrode wire passing through the damper passes through the upper guide and the lower guide in sequence and then enters the wire-threading hole. The workpiece to be processed is located between the upper guide and the lower guide.

6. The semi-automatic wire threading device for wire cutting according to claim 1, characterized in that, A guide rail is provided below the processing platform, the base of the wire clamping mechanism is movably connected to the guide rail, and the wire clamping pneumatic gripper is rotatably connected to the base.

7. The semi-automatic wire threading device for wire cutting according to claim 6, characterized in that, It also includes a wire tensioning mechanism located above the processing platform. The wire tensioning mechanism has a movable wire tensioning wheel, and the electrode wire wound on the drum passes around the wire tensioning wheel and enters the damper.

8. A semi-automatic wire threading method for wire cutting, characterized in that, The method employs the semi-automatic wire-threading device for wire cutting as described in any one of claims 1 to 7, and includes the following steps: The roller rotates counterclockwise until one end of the electrode wire contacts the wire-burning electrode; Turn on the damper; An electric current is applied to the drum and the burning electrode to burn off the electrode wire; The roller rotates counterclockwise until the electrode wire exits from the wire-threading hole; The wire-clamping gripper moves to directly below the wire-threading hole; The electrode wire is manually passed through the pre-made hole and the wire-passing hole on the workpiece; Activate the wire clamping gripper to clamp the electrode wire passing through the wire threading hole and pull it below the roller; The electrode wire on the wire clamping gripper is manually fixed to the roller and the damper is turned off.

9. The semi-automatic wire threading method for wire cutting according to claim 8, characterized in that, The wire clamping mechanism has a base, and the wire clamping pneumatic gripper is rotatably connected to the base; The threading method also includes: After the wire clamping gripper moves to directly below the wire threading hole, the wire clamping gripper rotates to be opposite to the wire threading hole; After the wire clamping gripper opens and clamps the electrode wire, the wire clamping gripper rotates to reset. After the wire-clamping gripper pulls the electrode wire to the bottom of the drum, the wire-clamping gripper rotates until the electrode wire contacts the drum; After the electrode wire on the wire clamping gripper is manually fixed to the roller, the wire clamping gripper rotates to reset.

10. The semi-automatic wire threading method for wire cutting according to claim 9, characterized in that, The bottom of the processing platform is provided with a guide block that can move along the extension direction of the electrode wire, and the guide block is provided with a first guide wheel; The threading method also includes: Before the wire-clamping gripper moves to directly below the wire-threading hole, the guide block drives the first guide wheel to move away from the wire-threading hole; After the wire clamping gripper opens to clamp the electrode wire and rotates to reset, the guide block moves and resets to below the wire threading hole.

11. The semi-automatic wire threading method for wire cutting according to any one of claims 8-10, characterized in that, The wire cutting semi-automatic wire threading device has a wire tensioning mechanism, which has a movable wire tensioning wheel; The threading method also includes: After the damper is turned off, the wire tensioning mechanism is turned on, and the tension of the electrode wire is adjusted by moving the wire tensioning wheel.

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