Unidirectional wire-cut machine tool can be externally connected with thin wire cutting wire feeding system

Abstract

The application provides a fine wire cutting wire conveying system which can be externally hung for use in a unidirectional wire-cut electrical discharge machine, comprising a cutting machine body, a wire releasing panel fixedly connected to the left side of the cutting machine body, a wire collecting panel fixedly connected to the right side of the cutting machine body, a wire drum shaft rotatably connected to the front side of the wire releasing panel, and a fine wire drum arranged on the wire drum shaft. The first servo motor is used to control the wire conveying speed, the angle displacement sensor is used to feed back the wire releasing speed, the rotation speed of the wire conveying speed wheel can be controlled, the tension of the electrode wire and the wire conveying speed are kept constant, the stability of the machining process is improved, the probability of wire breakage is reduced, and the consistency of the kerf width is maintained. The fine wire cutting wire conveying system can be used alone to form a numerical control unidirectional wire-cut electrical discharge machine, or can be used as a matching accessory of a conventional numerical control unidirectional wire-cut electrical discharge machine and externally hung on the conventional numerical control unidirectional wire-cut electrical discharge machine.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of filament cutting wire system, specifically, the filament cutting wire system of one-way wire-cutting machine tool can be externally hung, belong to the technical field of filament cutting processing wire. BACKGROUND

[0002] Numerical control one-way wire-cutting machine tool uses high-precision alloy wire as electrode, high-efficiency, micro-precision nanosecond level resistance-free pulse power is applied between electrode and conductive workpiece to carry out controlled discharge etching workpiece, deionized water quality working fluid is used to force flushing, cooling, chip removal for machining gap.In the process of processing, according to the processing state, the pulse power, each numerical control shaft, working fluid, the speed and tension of wire system and other process parameters are self-adaptive, servo and intelligent control, fine wire cutting refers to the wire diameter of electrode ≤Φ0.1mm wire-cutting processing, microstructure processing, various precision parts, micro-machinery, precision narrow gap, narrow slot processing and many other key parts processing and manufacturing,

[0003] Fine wire electrode wire diameter is small, and the tensile strength is weak, and the wire is easy to break in cutting process, in the process of fine wire cutting, some fine wire cutting wire system cannot guarantee the stability and reliability of fine wire cutting, which leads to the surface quality of workpiece cannot be well controlled and the probability of wire breakage increases, therefore, a kind of fine wire cutting wire system of one-way wire-cutting machine tool can be externally hung. SUMMARY

[0004] Therefore, the present application provides a kind of fine wire cutting wire system of one-way wire-cutting machine tool can be externally hung, to solve or alleviate the technical problems existing in the prior art, at least provide a kind of beneficial choice.

[0005] The technical scheme of the embodiment of the present application is implemented as follows: the unidirectional wire-cutting machine tool can be externally connected with a thin wire cutting and conveying system, which comprises a cutting machine tool body, a wire releasing panel fixedly connected to the left side of the cutting machine tool body, a wire collecting panel fixedly connected to the right side of the cutting machine tool body, a wire cylinder shaft rotatably connected to the front side of the wire releasing panel, a thin wire cylinder arranged on the wire cylinder shaft, a first transition wheel arranged on the wire releasing panel, a wire releasing speed wheel arranged on the wire releasing panel, a first roller and a first tensioning wheel rotatably connected to the wire releasing panel, a same first wire pressing flat belt in transmission connection with the wire releasing speed wheel and the first tensioning wheel, a second transition wheel rotatably connected to the wire releasing panel, an upper inductive switch and a lower inductive switch fixedly installed on the wire releasing panel, a tension transition wheel arranged on the wire releasing panel, a counterweight movably contacted with the tension transition wheel, a wire blocking rod arranged on one side of the second transition wheel, a wire conveying speed wheel, a second roller and a second tensioning wheel rotatably connected to the wire collecting panel, a same second wire pressing flat belt in transmission connection with the second tensioning wheel, the second roller and the wire conveying speed wheel, a wire discharging wheel and a wire collecting wheel rotatably connected to the wire collecting panel, a servo speed regulating assembly and a swing assembly arranged on the wire releasing panel, a guide assembly arranged on one side of the cutting machine tool body, and a speed control assembly arranged on the wire collecting panel.

[0006] Further preferably, the servo speed regulating assembly comprises a first roller shaft, a first support plate, and a screw.

[0007] The first roller shaft is fixedly connected to the wire releasing panel, the first support plate is hinged to the first roller shaft and fixed by the screw, a rolling bearing is fixedly connected to the first roller shaft, the outer circle of the rolling bearing is fixedly connected with the first roller, and the first tensioning wheel is supported and connected to the first support plate by the rolling bearing.

[0008] Further preferably, the swing assembly comprises a swing rod, a swing transmission shaft, a coupling, and an angular displacement sensor.

[0009] The tension transition wheel is supported and arranged on the swing rod by the rolling bearing, the swing rod is arranged on the swing transmission shaft, the swing transmission shaft is supported by the rolling bearing, and the coupling is connected with the swing transmission shaft and the angular displacement sensor respectively.

[0010] Further preferably, the guide assembly comprises a third transition wheel, an upper guide, a lower guide, a fourth transition wheel, and a fifth transition wheel.

[0011] The upper guide and the lower guide are fixedly installed on the cutting machine tool body respectively, the third transition wheel is arranged on one side of the upper guide, and the fourth transition wheel and the fifth transition wheel are arranged on one side of the lower guide.

[0012] Further preferably, the speed control assembly comprises a second roller, a second roller shaft, and a second support plate.

[0013] The second support plate is movably connected to the wire collecting panel, the rolling bearing is installed on the wire collecting panel through the second roller shaft, the first servo motor is fixedly connected to the wire collecting panel, the output shaft of the first servo motor is fixedly connected to the wire conveying speed wheel, the second tensioning wheel is supported by the rolling bearing and installed on the second support plate, the second support plate is hingedly connected to the second roller shaft and fixed by a screw.

[0014] Further preferably, the upper guide and the lower guide are used for guiding, feeding and spraying liquid to the wire electrode.

[0015] Further preferably, the second servo motor is fixedly connected to the wire releasing panel, the wire releasing speed wheel is installed on the shaft of the second servo motor, the first tensioning wheel is supported by the rolling bearing and installed on the first support plate, the first support plate is hingedly connected to the first roller shaft and fixed by a screw.

[0016] Further preferably, the first transition wheel, the second transition wheel, the third transition wheel, the fourth transition wheel and the fifth transition wheel are all provided with V-shaped grooves.

[0017] The embodiment of the present application has the following advantages due to the above technical solutions.

[0018] The first servo motor is used for setting and controlling the wire conveying speed, the wire releasing speed is fed back to the second servo motor by the angle displacement sensor, the rotation speed of the wire releasing speed wheel can be servo-controlled, the tension of the wire electrode and the wire conveying speed are kept stable and constant, the stability of the machining process is improved, the probability of wire breakage is reduced, and the consistency of the cutting seam width is maintained.

[0019] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above described illustrative aspects, embodiments and features, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative effort.

[0021] Figure 1 Structure diagram of the present application;

[0022] Figure 2 Structure diagram of the present application Figure 1 Structure diagram of the present application

[0023] Figure 3 Structure diagram of the present application Figure 1 Structure diagram of the present application

[0024] Figure 4 Structure diagram of the present application Figure 1 Structure diagram of the present application

[0025] Figure 5 Structure diagram of the present application Figure 1 Structure diagram of the present application

[0026] Label: 1, cutting machine main body; 2, wire releasing panel; 3, wire drum shaft; 4, fine wire drum; 5, first transition wheel; 6, wire releasing speed wheel; 7, first roller; 8, first wire pressing flat belt; 9, first tensioning wheel; 10, second transition wheel; 11, upper inductive switch; 12, tension transition wheel; 13, lower inductive switch; 14, counterweight piece; 15, wire blocking rod; 16, wire collecting panel; 17, wire conveying speed wheel; 18, second roller; 19, second wire pressing flat belt; 20, second tensioning wheel; 21, wire discharging wheel; 22, wire collecting wheel; 23, servo speed regulating assembly; 24, first roller shaft; 25, first support plate; 26, second roller shaft; 27, screw; 28, swinging assembly; 29, swinging rod; 30, swinging transmission shaft; 31, second support plate; 32, coupling; 33, angular displacement sensor; 34, guiding assembly; 35, third transition wheel; 36, upper guide; 37, second servo motor; 38, lower guide; 39, fourth transition wheel; 40, fifth transition wheel; 41, speed control assembly; 42, first servo motor. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] like Figures 1-5 As shown, this embodiment of the invention provides a wire feeding system for unidirectional wire EDM machines that can be externally attached. The system includes a main body 1, a wire feeding panel 2 fixedly connected to the left side of the main body 1, a wire take-up panel 16 fixedly connected to the right side of the main body 1, a wire spool shaft 3 rotatably connected to the front of the wire feeding panel 2, a wire spool 4 mounted on the wire spool shaft 3, a first transition wheel 5 mounted on the wire feeding panel 2, a wire feeding speed wheel 6 mounted on the wire feeding panel 2, and a first roller rotatably connected to the wire feeding panel 2. 7 and the first tensioning wheel 9, the yarn feeding speed wheel 6 and the first tensioning wheel 9 are connected by the same first pressure flat belt 8, the yarn feeding panel 2 is rotatably connected to the second transition wheel 10, the yarn feeding panel 2 is fixedly installed with the upper induction switch 11 and the lower induction switch 13, the yarn feeding panel 2 is provided with a tension transition wheel 12, the tension transition wheel 12 is in contact with a counterweight 14, the second transition wheel 10 is provided with a yarn-blocking rod 15 on one side, the take-up panel 16 is rotatably connected to the yarn feeding speed wheel 17, the second roller 18 and The second tensioning roller 20, the second roller 18, and the wire feeding speed roller 17 are all connected by the same second pressure flat belt 19. The take-up panel 16 is rotatably connected to the wire feeding roller 21 and the take-up roller 22. The wire feeding panel 2 is equipped with a servo speed control component 23 and a swing component 28. A guide component 34 is located on one side of the cutting machine body 1. The take-up panel 16 is equipped with a speed control component 41. The wire feeding speed is set and controlled by the first servo motor 42 and by the angular displacement sensor 33. The wire feeding speed is fed back to the second servo motor 37, which can servo control the rotation speed of the wire feeding speed wheel 6, so that the tension of the electrode wire and the wire feeding speed remain stable and constant, thereby improving the stability of the processing, reducing the probability of wire breakage and maintaining the consistency of the kerf width. This wire cutting and feeding system can be used alone to form a CNC unidirectional wire EDM wire cutting machine, or it can be used as an optional accessory for conventional CNC unidirectional wire EDM wire cutting machines, and can be installed externally on conventional CNC unidirectional wire EDM wire cutting machines.

[0030] In one embodiment, the servo speed control component 23 includes a first roller shaft 24, a first support plate 25, and a screw 27;

[0031] A first roller shaft 24 is fixedly connected to the feeding panel 2. A first support plate 25 on the feeding panel 2 is hinged to the first roller shaft 24 and fixed by screws 27. A rolling bearing is fixedly connected to the first roller shaft 24, and the outer circle of the rolling bearing is fixedly connected to the first roller 7. The first tensioning wheel 9 is supported by the rolling bearing and connected to the first support plate 25.

[0032] In one embodiment, the swing assembly 28 comprises a swing rod 29, a swing transmission shaft 30, a coupling 32, an angular displacement sensor 33;

[0033] The tension transition wheel 12 is supported by rolling bearings and mounted on the swing rod 29, the swing rod 29 is mounted on the swing transmission shaft 30, the swing transmission shaft 30 is supported by rolling bearings, and the coupling 32 is connected with the swing transmission shaft 30 and the angular displacement sensor 33 respectively.

[0034] In one embodiment, the guide assembly 34 comprises a third transition wheel 35, an upper guide 36, a lower guide 38, a fourth transition wheel 39, and a fifth transition wheel 40.

[0035] The upper guide 36 and the lower guide 38 are fixedly installed on the cutting machine bed main body 1, one side of the upper guide 36 is provided with the third transition wheel 35, and one side of the lower guide 38 is provided with the fourth transition wheel 39 and the fifth transition wheel 40.

[0036] In one embodiment, the speed control assembly 41 comprises a second roller 18, a second roller shaft 26, and a second support plate 31.

[0037] The second support plate 31 is movably contacted on the wire collecting panel 16, the rolling bearings are installed on the wire collecting panel 16 through the second roller shaft 26, the wire collecting panel 16 is fixedly connected with a first servo motor 42, the output shaft of the first servo motor 42 is fixedly connected with the wire running speed wheel 17, the second tension wheel 20 is supported by rolling bearings and mounted on the second support plate 31, the second support plate 31 is hinged on the second roller shaft 26 and fixed by the screw 27.

[0038] In one embodiment, the upper guide 36 and the lower guide 38 are used for guiding, feeding and spraying liquid to the fine wire electrode wire, the wire running plane of the fine wire cutting wire running system is staggered with the wire running plane of the conventional numerical control single-direction wire-cut electric discharge wire-cutting machine bed by a certain distance, and the distance is the distance between the upper guide 36 of the fine wire cutting and the guide of the conventional numerical control single-direction wire-cut electric discharge wire-cutting machine bed.

[0039] In one embodiment, the wire collecting panel 2 is fixedly connected with a second servo motor 37, the wire running speed wheel 6 is mounted on the shaft of the second servo motor 37, the first tension wheel 9 is supported by rolling bearings and mounted on the first support plate 25, the first support plate 25 is hinged on the first roller shaft 24 and fixed by the screw 27, and the second servo motor 37 plays a role in balancing the wire running speed.

[0040] In one embodiment, the first transition wheel 5, the second transition wheel 10, the third transition wheel 35, the fourth transition wheel 39 and the fifth transition wheel 40 are all provided with V-shaped grooves for guiding the wire.

[0041] In use, the first servo motor 42 sets and controls the wire feeding speed, the angular displacement sensor 33 feeds back the wire feeding speed to servo control the second servo motor 37, the rotating speed of the wire feeding speed wheel 6 can be controlled, the tension of the wire electrode and the wire feeding speed are kept stable and constant, the stability of the machining process is improved, the probability of wire breakage is reduced, and the consistency of the cutting seam width is kept, the first wire pressing flat belt 8 and the second wire pressing flat belt 19 are soft elastic materials, the wire electrode is not damaged and does not slip on the first roller 7 and the second roller 18 when the wire electrode is pressed and runs, the wire electrode passes through the first transition wheel 5 to the first roller 7, after winding the first roller 7 once, the wire electrode passes through the tension transition wheel 12 to the second transition wheel 10, and then enters the upper guide 36 through the third transition wheel 35, after passing through the upper guide 36, the wire electrode enters the lower guide 38, and then passes through the fourth transition wheel 39 and the fifth transition wheel 40 to the second roller 18, after winding the second roller 18 once, the wire electrode passes through the wire arranging wheel 21 to the wire collecting wheel 22 to wind and collect the used wire electrode, when the wire feeding speed controlled by the second servo motor 37 does not match the wire collecting speed controlled by the first servo motor 42, the tension transition wheel 12 moves upward or downward, moves upward when the wire feeding speed is slow, and moves downward when the wire feeding speed is fast, the tension transition wheel 12 drives the swing rod 29 to move upward or downward, drives the swing transmission shaft 30 to rotate, and then drives the angular displacement sensor 33 to rotate through the coupling 32, the angular displacement sensor 33 feeds back to the second servo motor 37 to control the rotating speed of the wire feeding wheel in a closed loop, so that the wire feeding speed controlled by the second servo motor 37 matches the wire collecting speed controlled by the first servo motor 42, the tension of the wire electrode and the wire feeding speed are kept stable and constant, when the wire electrode breaks, the tension transition wheel 12 drives the swing rod 29 to move downward, the swing rod 29 touches the lower inductive switch 13, the lower inductive switch 13 sends a wire breakage signal to the numerical control system, when the wire electrode does not break, the swing rod 29 touches the lower inductive switch 13, which is the position of the tension transition wheel 12 that is too low when the wire feeding speed is kept constant, the tension transition wheel 12 is adjusted upward, the swing rod 29 touches the upper inductive switch 11, which is the position of the tension transition wheel 12 that is too high when the wire feeding speed is kept constant, the tension transition wheel 12 is adjusted downward, and the angular displacement sensor 33 feedback is reliable, the wire electrode is not easy to jump out of the V-shaped groove of the guide wire, the wire cutting and wire feeding system can be used alone to form a numerical control unidirectional wire-cutting EDM machine tool, and can be used as a matching accessory of a conventional numerical control unidirectional wire-cutting EDM machine tool.

[0042] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wire cutting and wire feeding system for externally attaching to a unidirectional wire electro-discharge machine, comprising a main body of the machine (1), characterized in that: The left side of the cutting machine body (1) is fixedly connected with a yarn feeding panel (2), the right side of the cutting machine body (1) is fixedly connected with a yarn collecting panel (16), the front side of the yarn feeding panel (2) is rotatably connected with a yarn cylinder shaft (3), the yarn cylinder shaft (3) is provided with a fine yarn cylinder (4), the yarn feeding panel (2) is provided with a first transition wheel (5), the upper side of the yarn feeding panel (2) is provided with a yarn feeding speed wheel (6), the yarn feeding panel (2) is rotatably connected with a first roller (7) and a first tension wheel (9), the yarn feeding speed wheel (6) and the first tension wheel (9) are rotatably connected with a same first yarn pressing flat belt (8), the yarn feeding panel (2) is rotatably connected with a second transition wheel (10), the yarn feeding panel (2) is fixedly connected with an upper inductive switch (11) and a lower inductive switch (13), the yarn feeding panel (2) is provided with a tension transition wheel (12), the tension transition wheel (12) is movably connected with a counterweight piece (14), one side of the second transition wheel (10) is provided with a yarn blocking rod (15), the yarn collecting panel (16) is rotatably connected with a yarn conveying speed wheel (17), a second roller (18) and a second tension wheel (20), the second tension wheel (20), the second roller (18) and the yarn conveying speed wheel (17) are rotatably connected with a same second yarn pressing flat belt (19), the yarn collecting panel (16) is rotatably connected with a yarn discharging wheel (21) and a yarn collecting wheel (22), the yarn feeding panel (2) is provided with a servo speed regulating assembly (23) and a swing assembly (28), one side of the cutting machine body (1) is provided with a guide assembly (34), the yarn collecting panel (16) is provided with a speed control assembly (41); The swing assembly (28) comprises a swing rod (29), a swing transmission shaft (30), a shaft coupling (32) and an angular displacement sensor (33); The tension transition wheel (12) is supported by a rolling bearing on the swing rod (29), the swing rod (29) is mounted on the swing transmission shaft (30), the swing transmission shaft (30) is supported by a rolling bearing, and the shaft coupling (32) is connected with the swing transmission shaft (30) and the angular displacement sensor (33) respectively; The speed control assembly (41) comprises a second roller (18), a second roller shaft (26) and a second supporting plate (31); The second roller (18) is mounted on the yarn collecting panel (16) through the second roller shaft (26), the yarn collecting panel (16) is fixedly connected with a first servo motor (42), the output shaft of the first servo motor (42) is fixedly connected with the yarn conveying speed wheel (17), the second tension wheel (20) is supported by a rolling bearing on the second supporting plate (31), the second supporting plate (31) is hinged on the second roller shaft (26) and is fixed by a screw (27), and the yarn collecting panel (16) movably contacts the second supporting plate (31). The second servo motor (37) is fixedly connected to the yarn releasing panel (2), the yarn releasing speed wheel (6) is mounted on the shaft of the second servo motor (37), the first tensioning wheel (9) is supported by a rolling bearing and mounted on the first support plate (25), the first support plate (25) is hingedly supported on the first roller shaft (24) and fixed by the screw (27); The first yarn pressing flat belt (8) and the second yarn pressing flat belt (19) are made of soft elastic material and do not slip on the first roller (7) and the second roller (18) when the thin wire electrode wire is pressed.

2. The wire cutting system of claim 1, wherein the wire cutting system is externally attached to the unidirectional wire erosion machine. The servo speed regulating assembly (23) comprises the first roller shaft (24), the first support plate (25) and the screw (27). The first roller shaft (24) is fixedly connected to the yarn releasing panel (2), the first support plate (25) is hingedly supported on the first roller shaft (24) and fixed by the screw (27), the rolling bearing is fixedly connected to the first roller shaft (24), and the outer circle of the rolling bearing is fixedly connected to the first roller (7).

3. The wire cutting system of claim 1, wherein the wire cutting system is externally attached to the wire-cut EDM machine. The guiding assembly (34) comprises the third transition wheel (35), the upper guide (36), the lower guide (38), the fourth transition wheel (39) and the fifth transition wheel (40). The upper guide (36) and the lower guide (38) are fixedly mounted on the cutting machine bed body (1), one side of the upper guide (36) is provided with the third transition wheel (35), and one side of the lower guide (38) is provided with the fourth transition wheel (39) and the fifth transition wheel (40).

4. The wire cutting system of claim 3, wherein the wire cutting system is externally attached to the wire-cut EDM machine. The upper guide (36) and the lower guide (38) are used for guiding, feeding and spraying liquid to the thin wire electrode wire.

5. The wire cutting system of claim 1, wherein the wire cutting system is externally attached to the wire-cut EDM machine. The first transition wheel (5), the second transition wheel (10), the third transition wheel (35), the fourth transition wheel (39) and the fifth transition wheel (40) are all provided with V-shaped grooves.

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