A wire electrical discharge machining machine

Abstract

The present invention discloses a wire electrical discharge machine. The key points of its technical solution are as follows: A wire electrical discharge machine includes a workpiece mounting seat for mounting a workpiece, a base, a sliding seat horizontally slidably connected to the base, and a cutting wire provided on the sliding seat for cutting the workpiece. The sliding seat is provided with a driving mechanism for driving the cutting wire to move and cutting the workpiece, and an inclined cutting mechanism for making the cutting wire in an inclined state and realizing inclined cutting. The present invention enables the cutting wire to be inclined in the space range and inclinedly cut the workpiece, and effectively avoids the problem that the cutting wire is hard pulled and causes equipment wear.

Description

Technical Field

[0001] The present invention relates to the field of electric spark cutting, and particularly to an electric spark wire cutting machine. Background Art

[0002] An electric spark wire cutting machine (abbreviated as WEDM for Wire Electrical Discharge Machining) belongs to the category of electro - machining. When the Soviet couple Lazarenko studied the phenomenon and causes of the damage of switch contacts due to spark discharge corrosion, they found that the instantaneous high temperature of the electric spark can melt and oxidize the local metal and corrode it, thus pioneering and inventing the electric spark machining method.

[0003] The existing electric spark cutting machines generally cut workpieces with the cutting wire in a vertical state, and generally can only cut vertical surfaces and cannot cut inclined surfaces normally. Or, the cutting wire is forced to be in an inclined state by strongly pulling the cutting wire for cutting. However, when the cutting wire is strongly pulled, it is easy to cause the cutting wire to disengage from the guide wheel, or the cutting wire to move eccentrically with the guide wheel, increasing the friction force and easily leading to equipment failures.

[0004] Therefore, it is necessary for us to improve such a structure to overcome the above - mentioned defects. Summary of the Invention

[0005] The purpose of the present invention is to provide an electric spark wire cutting machine, which can realize the inclination of the cutting wire within a spatial range and obliquely cut the workpiece, and at the same time effectively avoid the problem of equipment wear caused by the hard pulling of the cutting wire.

[0006] The above - mentioned technical purpose of the present invention is achieved through the following technical solutions: an electric spark wire cutting machine, including a workpiece mounting seat for mounting a workpiece, a base, a sliding seat horizontally slidably connected to the base, and a cutting wire provided on the sliding seat and used for cutting the workpiece. The sliding seat is provided with a driving mechanism for driving the cutting wire to move and cutting the workpiece, and an inclined cutting mechanism for making the cutting wire in an inclined state and realizing inclined - surface cutting;

[0007] The driving mechanism includes a driving seat slidably connected to the sliding seat along the sliding direction of the sliding seat, a driving column rotatably connected thereto, a driving motor provided on the driving frame, and a control component provided between the driving column and the sliding seat and used for controlling the movement of the conveying driving seat. The rotation axis of the driving column is parallel to the sliding direction of the sliding seat, the cutting wire is wound around the driving column, and the driving column rotates to drive the cutting wire to move;

[0008] The diagonal cutting mechanism includes a guiding column fixedly connected to the sliding seat and extending to the position of the workpiece mounting seat, a first adjusting assembly arranged at the end of the guiding seat away from the sliding seat for adjusting the angle of the cutting wire, a diagonal cutting seat slidably connected to the sliding seat along the sliding direction of the sliding seat, a sliding table arranged on the diagonal cutting seat, a second adjusting assembly arranged on the sliding table for adjusting the angle of the cutting wire, and a positioning assembly arranged between the diagonal cutting seat and the sliding seat to adapt the cutting wire to position changes. The second adjusting assembly is located above the first adjusting assembly, and the cutting wire between the first adjusting assembly and the second adjusting assembly can cut the workpiece in an inclined state. The cutting wire circulates between the driving column, the positioning assembly, the second adjusting assembly, and the first adjusting assembly in sequence.

[0009] The further setting of the present invention is that the first adjusting assembly includes a first rotating motor arranged on the guiding column, a first adjusting frame arranged on the output shaft of the first rotating motor, and a first adjusting guide wheel arranged on the first adjusting frame for guiding the cutting wire. The rotation axial direction of the output shaft of the first rotating motor is horizontal and perpendicular to the sliding direction of the sliding seat, and the rotation axial direction of the first adjusting guide wheel is parallel to the sliding direction of the sliding seat. The second adjusting assembly includes a second rotating motor arranged on the sliding table, a second adjusting frame arranged on the output shaft of the second rotating motor, a second adjusting guide wheel arranged on the second adjusting frame for guiding the cutting wire, the output shaft of the second rotating motor is parallel to the output shaft of the first rotating motor, and the axes of the second adjusting guide wheel and the first adjusting guide wheel are parallel to each other.

[0010] The further setting of the present invention is that the positioning assembly includes a first positioning wheel arranged on the sliding seat, a positioning rod rotatably connected to the sliding seat, a positioning shaft arranged between the positioning rod and the sliding seat for allowing the positioning rod to rotate relatively, a second positioning wheel arranged on the positioning rod and corresponding to the first positioning wheel, a third positioning wheel arranged on the positioning rod and corresponding to the second adjusting guide wheel, and a synchronous structure arranged between the diagonal cutting seat and the positioning rod for driving the positioning rod to rotate synchronously. The rotation axial direction of the positioning shaft is horizontal and perpendicular to the moving direction of the sliding seat. The positioning shaft, the first positioning wheel, and the first adjusting guide wheel are located in the same vertical plane. The cutting wire winds around the corresponding positions on the lower side walls of the first positioning wheel and the second positioning wheel, and the axis of the positioning shaft is located on the same horizontal straight line. When the positioning rod is vertical, the first positioning wheel, the second positioning wheel, the third positioning wheel, and the first adjusting guide wheel are located in the same vertical plane.

[0011] A further setting of the present invention is that: the synchronization structure includes a connection block fixedly connected to the bevel seat, a threading rod rotatably connected to the connection block at one end, a threading sleeve fixedly connected to the positioning rod and through which the threading rod passes, the threading sleeve is located at the middle position of the connecting rod, the axis of the threading sleeve is parallel to the length direction of the positioning rod, and the rotation axis of the threading rod is horizontal and perpendicular to the sliding direction of the sliding seat.

[0012] A further setting of the present invention is that: the sliding table is slidably connected to the bevel seat perpendicular to the sliding direction of the bevel seat, a lifting table is arranged between the sliding table and the second rotating motor, the lifting table is slidably connected to the sliding table in the vertical direction, the second rotating motor is fixedly connected to the lifting table, both the first adjusting frame and the second adjusting frame are provided with cutting wire guides, and both the first adjusting frame and the second adjusting frame are provided with guide rotating components for adjusting the positions of the corresponding cutting wire guides. The guide rotating component includes a steering block rotatably connected to the first adjusting frame or the second adjusting frame and fixedly connected to the cutting wire guide, a speed reducer arranged on the first adjusting frame or the second adjusting frame and driving the steering block to rotate, and a steering motor connected to the speed reducer. The rotation axis of the steering block is parallel to the moving direction of the sliding seat.

[0013] A further setting of the present invention is that: the body of the steering motor is fixedly connected to the speed reducer, and the body of the steering motor connected to the first adjusting frame is fixed to the lower end face of the speed reducer, and the body of the steering motor connected to the second adjusting frame is fixed to the upper end face of the speed reducer.

[0014] A further setting of the present invention is that: the sliding seat is provided with a tensioning mechanism for keeping the cutting wire in a tensioned state. The tensioning mechanism includes a counterweight guide rod arranged vertically on the sliding seat, a counterweight block slidably connected to the counterweight guide rod in the vertical direction, a counterweight guide wheel arranged on the counterweight block and around which the cutting wire passes, and two counterweight connecting wheels respectively arranged on both sides of the counterweight guide rod. The cutting wire passes through one counterweight connecting wheel, the counterweight guide wheel, the other counterweight connecting wheel in sequence from the driving column and then enters the first positioning wheel. The counterweight block drives the counterweight guide wheel to move downward under the action of gravity and keeps the cutting wire in a tensioned state.

[0015] A further setting of the present invention is that: the sliding seat is provided with a recovery guide wheel around which the cutting wire passes. The recovery guide wheel is located between the first adjusting guide wheel and the driving column. The lower side wall of the recovery guide wheel and the lower side wall of the first adjusting guide wheel are located on the same horizontal straight line position, and the cutting wire is pulled by the second adjusting guide wheel through the recovery guide wheel and then wound around the driving column.

[0016] A further setting of the present invention is that a sliding guiding assembly is arranged between the recycling guide wheel and the driving column. The sliding guiding assembly includes a horizontally arranged sliding guiding rod, a sliding block slidably connected to the sliding guiding rod in the horizontal direction, and a sliding guide wheel arranged on the sliding block. The sliding guide wheel is located between the recycling guide wheel and the driving column, and the sliding guide wheel is located below the recycling guide wheel. The length direction of the sliding guiding rod is perpendicular to the sliding direction of the sliding seat.

[0017] A further setting of the present invention is that the control assembly includes a bidirectional reciprocating lead screw rotatably connected to the driving seat, a lead screw nut arranged on the sliding seat and threadedly connected to the bidirectional reciprocating lead screw, and a core shaft arranged on the driving column. The core shaft and the bidirectional reciprocating lead screw are synchronously belt-driven.

[0018] In summary, the present invention has the following beneficial effects:

[0019] During use, the core shaft and the driving column are driven to rotate by the driving motor, so as to drive the cutting wire to move and cut the workpiece. At the same time, the core shaft drives the bidirectional reciprocating lead screw to rotate synchronously, and the lead screw nut moves relative to the bidirectional reciprocating lead screw, realizing that the driving column reciprocates along the sliding direction of the sliding seat, which can avoid the cutting wire from maintaining contact with the driving column at the same position, prevent the driving column from being quickly worn, and is beneficial to the heat dissipation of the cutting wire.

[0020] When cutting, the cutting line sequentially passes through the driving column, the first positioning wheel, the second positioning wheel, the third positioning wheel, the second adjusting guide wheel, the first adjusting guide wheel and then winds back to the driving column, and the workpiece is located between the second adjusting guide wheel and the first adjusting guide wheel, and the workpiece is cut by the cutting line between the second adjusting guide wheel and the first adjusting guide wheel; when the workpiece needs to be cut obliquely, the second adjusting guide wheel and the first adjusting guide wheel are offset by the oblique cutting seat sliding relative to the sliding seat. At the same time, the corresponding first adjusting frame and the second adjusting frame are driven by the first rotating motor and the second rotating motor to rotate by a corresponding angle, so that the first adjusting guide wheel and the second adjusting guide wheel are located in the same plane, and the cutting line is tangent to the first adjusting guide wheel and the second adjusting guide wheel; at the same time, after the oblique cutting seat slides, the positioning rod is driven by the synchronous structure to rotate by a corresponding angle synchronously, and the cutting line can be smoothly moved from the third positioning wheel to the second adjusting guide wheel by deflecting the third positioning wheel by a corresponding angle, reducing the friction force generated by the cutting line changing from a straight line to an inclined line on the second adjusting guide wheel; and because the corresponding positions of the lower side walls of the first positioning wheel and the second positioning wheel where the cutting line is wound are on the same horizontal straight line as the axis of the positioning shaft, after the positioning rod deflects relative to the sliding seat, the cutting line can still be smoothly wound from the first positioning wheel to the second positioning wheel, reducing wear. In addition, in the synchronous structure, the threading rod is threaded through the threading sleeve to ensure that after the cutting seat moves and the positioning rod deflects, the threading rod and the threading sleeve can always be kept connected and adapt to the position and angle changes of the positioning rod and the cutting seat.

[0021] When the sliding table moves relative to the oblique cutting seat, the cutting line can be inclined within the spatial range, realizing oblique cutting of the workpiece in different directions, expanding the cutting range, and the cutting line guide can effectively avoid the situation of the cutting line skipping when cutting the workpiece and the cutting line breaking away from the first adjusting guide wheel and the second adjusting guide wheel. The corresponding steering motor and reducer are used to drive the cutting line guide to rotate by a corresponding angle to adapt to the change of the cutting line position.

[0022] By changing the installation position of the steering motor, the deflection angles of the first rotating motor and the second rotating motor driving the first adjusting frame and the second adjusting frame can be effectively increased, and the oblique cutting range of the workpiece can be improved.

[0023] When the cutting line obliquely cuts the workpiece, the cutting line is pulled, that is, the cutting line between the two counterweight connecting wheels pulls the counterweight guide wheel and the counterweight block to move upward, and the length of the cutting line between the two counterweight connecting wheels is shortened, adapting to the change of the cutting line length when obliquely cutting the workpiece.

[0024] The cutting line winds from the first adjusting guide wheel around the recovery guide wheel and the sliding guide wheel in sequence and then winds to the driving column, and through the relative sliding of the sliding block of the sliding guide wheel, the sliding guide wheel is located at the central position between the recovery guide wheel and the driving column, playing a regulating role. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the present invention;

[0026] Figure 2 is a schematic partial structure of the present invention Figure 1 for showing the oblique cutting mechanism and the tensioning mechanism;

[0027] Figure 3 is a schematic partial structure of the present invention Figure 2 for showing the oblique cutting mechanism;

[0028] Figure 4 is a schematic diagram of the running of the cutting line of the present invention;

[0029] Figure 5 is a cross-sectional view of the driving mechanism in the present invention.

[0030] The corresponding component names indicated by the numbers in the figure: 1, workpiece mounting seat; 2, base; 3, sliding seat; 4, cutting line; 5, driving seat; 6, driving column; 7, driving motor; 8, bi-directional reciprocating lead screw; 9, lead screw nut; 10, mandrel; 11, fixing block; 12, card slot; 13, guiding column; 14, oblique cutting seat; 15, sliding table; 16, first rotating motor; 17, first adjusting frame; 18, first adjusting guide wheel; 19, second rotating motor; 20, second adjusting frame; 21, second adjusting guide wheel; 22, first positioning wheel; 23, positioning rod; 24, positioning shaft; 25, second positioning wheel; 26, third positioning wheel; 27, connecting block; 28, threading rod; 29, threading sleeve; 30, lifting table; 31, cutting line guide; 32, turning block; 33, speed reducer; 34, turning motor; 35, counterweight guide rod; 36, counterweight block; 37, counterweight guide wheel; 38, counterweight connecting wheel; 39, recovery guide wheel; 40, sliding guide rod; 41, sliding block; 42, sliding guide wheel; 43, slider; 44, fourth positioning wheel. Detailed Embodiment

[0031] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with the drawings and specific embodiments.

[0032] As Figures 1 to 5 shown, a wire electrical discharge machine tool proposed by the present invention includes a workpiece mounting seat 1 for mounting a workpiece, a base 2, a sliding seat 3 horizontally slidably connected to the base 2, a cutting line 4 provided on the sliding seat 3 and used for cutting the workpiece, a driving mechanism provided on the sliding seat 3 for moving the cutting line 4 to cut the workpiece, and an oblique cutting mechanism for making the cutting line 4 in an inclined state to realize oblique cutting.

[0033] Among them, the driving mechanism includes a driving seat 5 slidably connected to the sliding seat 3 along the sliding direction of the sliding seat 3, a driving column 6 rotatably connected thereto, a driving motor 7 provided on the driving frame, and a control assembly provided between the driving column 6 and the sliding seat 3 to control the movement of the conveying driving seat 5. The driving column 6 is hollow, and the rotation axis of the driving column 6 is parallel to the sliding direction of the sliding seat 3. The cutting wire 4 is wound around the driving column 6, and the rotation of the driving column 6 drives the movement of the cutting wire 4. The control assembly includes a bidirectional reciprocating lead screw 8 rotatably connected to the driving seat 5, a lead screw nut 9 installed on the sliding seat 3 and threadedly connected to the bidirectional reciprocating lead screw 8, and a core shaft 10 provided on the driving column 6. Synchronous belt transmission is provided between the core shaft 10 and the bidirectional reciprocating lead screw 8. The core shaft 10 passes through the central position of the driving column 6 and is fixedly connected to the driving column 6, and the end face of the core shaft 10 is connected to the output shaft of the driving motor 7. During use, the driving motor 7 drives the core shaft 10 and the driving column 6 to rotate, thereby driving the movement of the cutting wire 4 and cutting the workpiece. At the same time, the core shaft 10 drives the bidirectional reciprocating lead screw 8 to rotate synchronously, and the lead screw nut 9 moves relative to the bidirectional reciprocating lead screw 8, realizing the reciprocating movement of the driving column 6 along the sliding direction of the sliding seat 3. This can prevent the cutting wire 4 from maintaining contact with the driving column 6 at the same position, avoid rapid wear of the driving column 6, and is conducive to the heat dissipation of the cutting wire 4.

[0034] To ensure the opposite rotation of the driving column 6 and prevent the relative movement of the driving column 6, two fixing blocks 11 respectively abutting against both ends of the driving column 6 are fixedly installed on the driving seat 5. The fixing blocks 11 are provided with clamping grooves 12 for the end faces of the driving column 6 to be inserted into and defining the rotation axis of the driving column 6. The core shaft 10 passes through the two fixing blocks 11. The relative positions of the driving column 6 are effectively positioned through the two fixing blocks 11 and the corresponding clamping grooves 12, ensuring the rotation axis of the driving column 6. And to improve the safety protection performance, the driving seat 5 is provided with a protective cover partially shielding the driving column 6.

[0035] The oblique cutting mechanism includes a guide column 13 fixedly connected to the sliding seat 3 and extending to the position of the workpiece mounting seat 1, a first adjustment assembly provided at the end of the guide column 13 away from the sliding seat 3 for adjusting the angle of the cutting wire 4, an oblique cutting seat 14 slidably connected to the sliding seat 3 along the sliding direction of the sliding seat 3, a sliding table 15 installed on the oblique cutting seat 14, a second adjustment assembly provided on the sliding table 15 for adjusting the angle of the cutting wire 4, and a positioning assembly provided between the oblique cutting seat 14 and the sliding seat 3 to adapt the cutting wire 4 to position changes. The oblique cutting seat 14 and the sliding seat 3 are driven by a motor lead screw structure (prior art) to move the oblique cutting seat 14. The guide column 13 is horizontally arranged and the length direction is perpendicular to the sliding direction of the sliding seat 3. The second adjustment assembly is located above the first adjustment assembly, and the cutting wire 4 between the first adjustment assembly and the second adjustment assembly can cut the workpiece in an inclined state. The cutting wire 4 circulates between the driving column 6, the positioning assembly, the second adjustment assembly, and the first adjustment assembly in sequence.

[0036] Among them, the first adjustment component includes a first rotating motor 16 arranged on the guide post 13, a first adjustment bracket 17 arranged on the output shaft of the first rotating motor 16, and a first adjustment guide wheel 18 arranged on the first adjustment bracket 17 for guiding the cutting wire 4. The rotation axis of the output shaft of the first rotating motor 16 is horizontal and perpendicular to the sliding direction of the sliding seat 3, and the rotation axis of the first adjustment guide wheel 18 is parallel to the sliding direction of the sliding seat 3. The second adjustment component has a structure similar to that of the first adjustment component, including a second rotating motor 19 arranged on the sliding table 15, a second adjustment bracket 20 arranged on the output shaft of the second rotating motor 19, a second adjustment guide wheel 21 arranged on the second adjustment bracket 20 for guiding the cutting wire 4, the output shaft of the second rotating motor 19 is parallel to the output shaft of the first rotating motor 16, and the axis of the second adjustment guide wheel 21 is parallel to the axis of the first adjustment guide wheel 18. The positioning component includes a first positioning wheel 22 arranged on the sliding seat 3, a positioning rod 23 rotatably connected to the sliding seat 3, a positioning shaft 24 arranged between the positioning rod 23 and the sliding seat 3 for allowing the positioning rod 23 to rotate relatively, a second positioning wheel 25 arranged on the positioning rod 23 corresponding to the first positioning wheel 22, a third positioning wheel 26 arranged on the positioning rod 23 corresponding to the second adjustment guide wheel 21, and a synchronization structure arranged between the bevel cutting seat 14 and the positioning rod 23 for driving the positioning rod 23 to rotate synchronously. The rotation axis of the positioning shaft 24 is horizontal and perpendicular to the moving direction of the sliding seat 3. The positioning shaft 24, the first positioning wheel 22, and the first adjustment guide wheel 18 are located in the same vertical plane. The cutting wire 4 is wound around the corresponding positions on the lower side wall of the first positioning wheel 22 and the lower side wall of the second positioning wheel 25, and the axis of the positioning shaft 24 is located on the same horizontal straight line. When the positioning rod 23 is vertical, the first positioning wheel 22, the second positioning wheel 25, the third positioning wheel 26, and the first adjustment guide wheel 18 are located in the same vertical plane. In this embodiment, the second positioning wheel 25 and the first positioning wheel 22 are respectively located at both ends of the positioning rod 23, and a fourth positioning wheel 44 is arranged at the middle position of the positioning rod 23. The fourth positioning wheel 44, the second positioning wheel 25, and the third positioning wheel 26 are arranged in a straight line.

[0037] The synchronization structure includes a connection block 27 fixedly connected to the bevel cutting seat 14, a penetrating rod 28 with one end rotatably connected to the connection block 27, a penetrating sleeve 29 fixedly connected to the positioning rod 23 for the penetrating rod 28 to pass through. The penetrating sleeve 29 is located at the middle position of the connecting rod, and the axis of the penetrating sleeve 29 is parallel to the length direction of the positioning rod 23. The rotation axis of the penetrating rod 28 is horizontal and perpendicular to the sliding direction of the sliding seat 3.

[0038] When cutting, the cutting line 4 successively passes through the driving column 6, the first positioning wheel 22, the second positioning wheel 25, the third positioning wheel 26, the second adjusting guide wheel 21, the first adjusting guide wheel 18 and then winds back to the driving column 6. The workpiece is located between the second adjusting guide wheel 21 and the first adjusting guide wheel 18, and the workpiece is cut by the section of the cutting line 4 between the second adjusting guide wheel 21 and the first adjusting guide wheel 18. When the workpiece needs to be cut obliquely, the second adjusting guide wheel 21 and the first adjusting guide wheel 18 are offset by the oblique cutting seat 14 sliding relative to the sliding seat 3. At the same time, the corresponding first adjusting frame 17 and the second adjusting frame 20 are driven by the first rotating motor 16 and the second rotating motor 19 to rotate by corresponding angles, so that the first adjusting guide wheel 18 and the second adjusting guide wheel 21 are located in the same plane, and the cutting line 4 is tangent to the first adjusting guide wheel 18 and the second adjusting guide wheel 21. At the same time, after the oblique cutting seat 14 slides, the positioning rod 23 is driven by the synchronous structure to rotate by a corresponding angle, and the cutting line 4 can smoothly move from the third positioning wheel 26 to the second adjusting guide wheel 21 by deflecting the third positioning wheel 26 by a corresponding angle, reducing the friction force generated by the cutting line 4 changing from a straight line to an oblique line on the second adjusting guide wheel 21. And because the corresponding positions of the lower side walls of the first positioning wheel 22 and the second positioning wheel 25 where the cutting line 4 winds around are located on the same horizontal straight line as the axis of the positioning shaft 24, after the positioning rod 23 deflects relative to the sliding seat 3, the cutting line 4 can still smoothly wind from the first positioning wheel 22 to the second positioning wheel 25, reducing wear. In addition, in the synchronous structure, the threading rod 28 is inserted into the threading sleeve 29 to ensure that after the cutting seat moves and the positioning rod 23 deflects, the threading rod 28 and the threading sleeve 29 can always be kept connected and adapt to the position and angle changes of the positioning rod 23 and the cutting seat.

[0039] Two first adjusting guide wheels 18 and two second adjusting guide wheels 21 corresponding to the first adjusting frame 17 and the second adjusting frame 20 are provided for the cutting line 4 to bypass, and the two first adjusting guide wheels 18 and the two second adjusting guide wheels 21 are both located in the same plane position. By respectively providing two first adjusting guide wheels 18 and two second adjusting guide wheels 21 on the first adjusting frame 17 and the second adjusting frame 20, the moving direction during cutting can be ensured.

[0040] To facilitate the inclination of the cutting line 4 in the plane perpendicular to the sliding direction of the sliding seat 3, the sliding table 15 is set to be horizontal and slidably connected to the upper end surface of the oblique cutting seat 14 perpendicular to the sliding direction of the oblique cutting seat 14, and the sliding table 15 and the oblique cutting seat 14 are driven by a motor and a lead screw structure (which is the prior art). An elevating platform 30 is installed between the sliding table 15 and the second rotating motor 19. The elevating platform 30 is slidably connected to the sliding table 15 in the vertical direction, and the elevating platform 30 and the sliding table 15 are also driven by a motor and a lead screw structure (which is the prior art). The second rotating motor 19 is fixedly installed on the elevating platform 30.

[0041] Cutting line guides 31 are provided on both the first adjusting frame 17 and the second adjusting frame 20. The cutting line guides 31 are provided with holes for the cutting line 4 to pass through (the cutting line guides 31 are prior art and will not be elaborated here). Both the first adjusting frame 17 and the second adjusting frame 20 are provided with guide rotating components for adjusting the positions of the corresponding cutting line guides 31. The guide rotating components include a steering block 32 rotatably connected to the first adjusting frame 17 or the second adjusting frame 20 and fixedly connected to the cutting line guide 31, a speed reducer 33 installed on the first adjusting frame 17 or the second adjusting frame 20 and driving the steering block 32 to rotate, and a steering motor 34 connected to the speed reducer 33. The rotation axis of the steering block 32 is parallel to the moving direction of the sliding seat 3. In this way, after the sliding table 15 moves relative to the bevel cutting seat 14, the cutting line 4 can be inclined within the spatial range, realizing bevel cutting of the workpiece in different directions, expanding the cutting range, and through the cutting line guide 31, it can effectively avoid the situation of the cutting line 4 jumping during cutting of the workpiece and the cutting line 4 breaking away from the first adjusting guide wheel 18 and the second adjusting guide wheel 21. By means of the corresponding steering motor 34 and speed reducer 33, the cutting line guide 31 is driven to rotate by a corresponding angle to adapt to the position change of the cutting line 4.

[0042] When rotating the first rotating motor 16 and the second rotating motor 19, to avoid the corresponding steering motor 34 touching the workpiece after deflection and affecting normal cutting; the body of the steering motor 34 is fixedly connected to the speed reducer 33, and the body of the steering motor 34 connected to the first adjusting frame 17 is fixed to the lower end face of the speed reducer 33, the body of the steering motor 34 connected to the second adjusting frame 20 is fixed to the upper end face of the speed reducer 33, and the steering motor 34 and the speed reducer 33 are connected by a synchronous belt. By changing the installation position of the steering motor 34, the deflection angles of the first adjusting frame 17 and the second adjusting frame 20 driven by the first rotating motor 16 and the second rotating motor 19 can be effectively increased, improving the bevel cutting range of the workpiece.

[0043] To ensure that the cutting wire 4 remains taut, the sliding seat 3 is provided with a tensioning mechanism for keeping the cutting wire 4 taut. The tensioning mechanism includes a vertically arranged counterweight guide rod 35 mounted on the sliding seat 3, a counterweight block 36 slidably connected to the counterweight guide rod 35 in the vertical direction, a counterweight guide wheel 37 provided on the counterweight block 36 and around which the cutting wire 4 passes, and two counterweight connecting wheels 38 respectively disposed on both sides of the counterweight guide rod 35. Among them, two counterweight guide rods 35 are provided, and the two counterweight guide rods 35 are vertical and parallel. The cutting wire 4 passes through one counterweight connecting wheel 38, the counterweight guide wheel 37, and the other counterweight connecting wheel 38 in sequence by the driving column 6 and then enters the first positioning wheel 22. The counterweight block 36 drives the counterweight guide wheel 37 to move downward under the action of gravity and keeps the cutting wire 4 taut. When the cutting wire 4 performs an oblique cutting on the workpiece, the cutting wire 4 is pulled, that is, the cutting wire 4 between the two counterweight connecting wheels 38 pulls the counterweight guide wheel 37 and the counterweight block 36 upward, and shortens the length of the cutting wire 4 between the two counterweight connecting wheels 38, and adapts to the change in the length of the cutting wire 4 when obliquely cutting the workpiece.

[0044] The sliding seat 3 is provided with a recovery guide wheel 39 for guiding a section of the cutting wire 4 that enters the driving column 6 after cutting the workpiece. The recovery guide wheel 39 is located in the same vertical plane position as the counterweight guide wheel 37 and the counterweight connecting wheel 38. The recovery guide wheel 39 is located between the first adjustment guide wheel 18 and the driving column 6. The lower side wall of the recovery guide wheel 39 and the lower side wall of the first adjustment guide wheel 18 are located on the same horizontal straight line position, and the cutting wire 4 is pulled by the second adjustment guide wheel 21, passes through the recovery guide wheel 39, and then winds around the driving column 6.

[0045] A sliding guide assembly is provided between the recovery guide wheel 39 and the driving column 6. The sliding guide assembly includes a horizontally arranged sliding guide rod 40, a sliding block 41 slidably connected to the sliding guide rod 40 in the horizontal direction, and a sliding guide wheel 42 provided on the sliding block 41. Two sliding guide rods 40 are provided and arranged horizontally. The sliding guide wheel 42 is located between the recovery guide wheel 39 and the driving column 6, and the sliding guide wheel 42 is located below the recovery guide wheel 39. The length direction of the sliding guide rod 40 is perpendicular to the sliding direction of the sliding seat 3. To prevent the cutting wire 4 from contacting the protective cover or the driving seat 5, a guide wheel for guiding the cutting wire is installed between the sliding guide wheel 42 and the driving column 6. The cutting wire 4 winds around the recovery guide wheel 39, the sliding guide wheel 42, the guide wheel, and then winds around the driving column 6 in sequence from the first adjustment guide wheel 18. And through the relative sliding of the sliding guide wheel 42 and the sliding block 41, the sliding guide wheel 42 reaches the central position between the recovery guide wheel 39 and the driving column 6, playing an adjustment role.

[0046] To facilitate the adjustment of the counterweight of the counterweight block 36, a slider 43 is provided between the counterweight block 36 and the counterweight guide rod 35. The counterweight guide rod 35 passes through the slider 43, and the counterweight block 36 is bolted to the slider 43. By bolting the counterweight block 36 to the slider 43, it is convenient to replace different counterweight blocks 36 and facilitate adjustment.

[0047] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire electrical discharge machining machine, comprising a workpiece mounting base (1) for mounting a workpiece, a base (2), a sliding seat (3) horizontally slidably connected to the base (2), and a cutting wire (4) provided on the sliding seat (3) for cutting the workpiece, characterized in that: The sliding seat (3) is provided with a driving mechanism for driving the cutting wire (4) to move and cutting the workpiece, and an inclined cutting mechanism for inclining the cutting wire (4) to perform inclined surface cutting; The driving mechanism includes a driving seat (5) slidably connected to the sliding seat (3) along the sliding direction of the sliding seat (3), a driving column (6) rotatably connected to the driving seat (5), a driving motor (7) provided on the driving seat (5), and a control component provided between the driving column (6) and the sliding seat (3) to control the movement of the conveying driving seat (5). The rotation axis of the driving column (6) is parallel to the sliding direction of the sliding seat (3). The cutting wire (4) is wound around the driving column (6), and the driving column (6) rotates to drive the cutting wire (4) to move; The inclined cutting mechanism includes a guide column (13) fixedly connected to the sliding seat (3) and extending to the position of the workpiece mounting seat (1), a first adjusting component provided at the end of the guide seat away from the sliding seat (3) for adjusting the angle of the cutting wire (4), an inclined cutting seat (14) slidably connected to the sliding seat (3) along the sliding direction of the sliding seat (3), a sliding table (15) provided on the inclined cutting seat (14), a second adjusting component provided on the sliding table (15) for adjusting the angle of the cutting wire (4), and a positioning component provided between the inclined cutting seat (14) and the sliding seat (3) to adapt the cutting wire (4) to position changes. The second adjusting component is located above the first adjusting component, and the cutting wire (4) between the first adjusting component and the second adjusting component can be in an inclined state to cut the workpiece. The cutting wire (4) circulates and moves between the driving column (6), the positioning component, the second adjusting component, and the first adjusting component in sequence; The first adjusting component includes a first rotating motor (16) provided on the guide column (13), a first adjusting frame (17) provided on the output shaft of the first rotating motor (16), and a first adjusting guide wheel (18) provided on the first adjusting frame (17) for guiding the cutting wire (4). The rotation axis of the output shaft of the first rotating motor (16) is horizontal and perpendicular to the sliding direction of the sliding seat (3), and the rotation axis of the first adjusting guide wheel (18) is parallel to the sliding direction of the sliding seat (3); The second adjusting component includes a second rotating motor (19) provided on the sliding table (15), a second adjusting frame (20) provided on the output shaft of the second rotating motor (19), a second adjusting guide wheel (21) provided on the second adjusting frame (20) for guiding the cutting wire (4), the output shaft of the second rotating motor (19) is parallel to the output shaft of the first rotating motor (16), and the axes of the second adjusting guide wheel (21) and the first adjusting guide wheel (18) are parallel; The positioning component includes a first positioning wheel (22) arranged on the sliding seat (3), a positioning rod (23) rotatably connected to the sliding seat (3), a positioning shaft (24) arranged between the positioning rod (23) and the sliding seat (3) for the positioning rod (23) to rotate relative to, a second positioning wheel (25) arranged on the positioning rod (23) and corresponding to the first positioning wheel (22), a third positioning wheel (26) arranged on the positioning rod (23) and corresponding to the second adjusting guide wheel (21), and a synchronization structure arranged between the bevel cutting seat (14) and the positioning rod (23) to drive the positioning rod (23) to rotate synchronously. The rotation axis of the positioning shaft (24) is horizontal and perpendicular to the moving direction of the sliding seat (3). The positioning shaft (24), the first positioning wheel (22), and the first adjusting guide wheel (18) are located in the same vertical plane. The cutting line (4) is wound around the corresponding positions on the lower side walls of the first positioning wheel (22) and the second positioning wheel (25), and the axis of the positioning shaft (24) is located on the same horizontal straight line. When the positioning rod (23) is vertical, the first positioning wheel (22), the second positioning wheel (25), the third positioning wheel (26), and the first adjusting guide wheel (18) are located in the same vertical plane; The control component includes a bidirectional reciprocating lead screw (8) rotatably connected to the driving seat (5), a lead screw nut (9) arranged on the sliding seat (3) and threadedly connected to the bidirectional reciprocating lead screw (8), and a core shaft (10) arranged on the driving column (6). A synchronous belt transmission is provided between the core shaft (10) and the bidirectional reciprocating lead screw (8).

2. An electric discharge wire cutting machine according to claim 1, characterized in that: The synchronization structure includes a connecting block (27) fixedly connected to the bevel cutting seat (14), a penetrating rod (28) with one end rotatably connected to the connecting block (27), a penetrating sleeve (29) fixedly connected to the positioning rod (23) for the penetrating rod (28) to penetrate through. The penetrating sleeve (29) is located at the middle position of the positioning rod (23). The axis of the penetrating sleeve (29) is parallel to the length direction of the positioning rod (23). The rotation axis of the penetrating rod (28) is horizontal and perpendicular to the sliding direction of the sliding seat (3).

3. A wire electrical discharge machine according to claim 1, characterized in that: The sliding table (15) is slidably connected to the bevel cutting base (14) perpendicular to the sliding direction of the bevel cutting base (14). A lifting table (30) is arranged between the sliding table (15) and the second rotating motor (19). The lifting table (30) is slidably connected to the sliding table (15) in the vertical direction. The second rotating motor (19) is fixedly connected to the lifting table (30). The first adjusting frame (17) and the second adjusting frame (20) are both provided with a cutting wire guide (31). The first adjusting frame (17) and the second adjusting frame (20) are both provided with a guide rotating assembly for adjusting the position of the corresponding cutting wire guide (31). The guide rotating assembly includes a steering block (32) rotatably connected to the first adjusting frame (17) or the second adjusting frame (20) and fixedly connected to the cutting wire guide (31), a speed reducer (33) arranged on the first adjusting frame (17) or the second adjusting frame (20) and driving the steering block (32) to rotate, and a steering motor (34) connected to the speed reducer (33). The rotation axis of the steering block (32) is parallel to the moving direction of the sliding seat (3).

4. A wire electrical discharge machine according to claim 3, characterized in that: The body of the steering motor (34) is fixedly connected to the speed reducer (33). The body of the steering motor (34) connected to the first adjusting frame (17) is fixed to the lower end face of the speed reducer (33), and the body of the steering motor (34) connected to the second adjusting frame (20) is fixed to the upper end face of the speed reducer (33).

5. A wire electrical discharge machine according to claim 1, wherein: The sliding seat (3) is provided with a tensioning mechanism for keeping the cutting wire (4) in a tensioned state. The tensioning mechanism includes a weight guide rod (35) arranged on the sliding seat (3) and vertically arranged, a weight block (36) slidably connected to the weight guide rod (35) in the vertical direction, a weight guide wheel (37) arranged on the weight block (36) and around which the cutting wire (4) passes, and two weight connecting wheels (38) respectively arranged on both sides of the weight guide rod (35). The cutting wire (4) passes through one weight connecting wheel (38), the weight guide wheel (37), and the other weight connecting wheel (38) in sequence by the driving column (6) and then enters the first positioning wheel (22). The weight block (36) drives the weight guide wheel (37) to move downward under the action of gravity and keeps the cutting wire (4) in a tensioned state.

6. An electric discharge wire cutting machine according to claim 5, characterized in that: The sliding seat (3) is provided with a recovery guide wheel (39) around which the cutting wire (4) passes. The recovery guide wheel (39) is located between the first adjusting guide wheel (18) and the driving column (6). The lower side wall of the recovery guide wheel (39) and the lower side wall of the first adjusting guide wheel (18) are located on the same horizontal straight line position. And the cutting wire (4) is pulled by the second adjusting guide wheel (21) through the recovery guide wheel (39) and then wound around the driving column (6).

7. The wire electrical discharge machine according to claim 6, wherein: A sliding guide assembly is provided between the recovery guide wheel (39) and the driving column (6). The sliding guide assembly includes a horizontally arranged sliding guide rod (40), a sliding block (41) slidably connected to the sliding guide rod (40) in the horizontal direction, and a sliding guide wheel (42) provided on the sliding block (41). The sliding guide wheel (42) is located between the recovery guide wheel (39) and the driving column (6), and the sliding guide wheel (42) is located below the recovery guide wheel (39). The length direction of the sliding guide rod (40) is perpendicular to the sliding direction of the sliding seat (3).

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