Novel precise medium-speed large-swing wire cutting machine tool

Abstract

The invention discloses a novel precise medium-speed wire-walking large-swing linear cutting machine tool, relates to the field of linear cutting machine tools, and aims to solve the problems that when a large angle is cut, an upper wire frame and a lower wire frame are generally fixedly arranged, taper cutting is carried out only through adjustment of a UV module, and the cutting angle is very limited. According to the technical scheme, one end, close to a stand column, of a lower wire frame body is rotationally connected with a wire frame sliding rod, one end, close to the stand column, of an upper wire frame body is rotationally connected with the wire frame sliding rod, and the ends, away from the stand column, of the upper wire frame body and the lower wire frame body are rotationally provided with electrode wire follow-up assemblies; the upper wire frame body, the lower wire frame body and the wire frame sliding rod are located on the same plane, the upper wire frame body, the lower wire frame body and the wire frame sliding rod form a large-taper connecting rod mechanism capable of moving at a large angle, and the upper wire frame body is movably arranged. And the effect that a parallelogram linkage structure is formed by rotating relative to the lower wire frame body, and the taper cutting range is enlarged is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wire cutting machines, and particularly to a new type of precision medium-speed wire cutting machine with large swing. Background Art

[0002] The present invention relates to the technical field of wire cutting, belonging to the category of reciprocating high-speed wire electrical discharge machining (WEDM) machines. The function of multiple cuts is realized on a high-speed reciprocating wire WEDM machine, which is commonly known as "medium-speed wire cutting". In a medium-speed wire cutting discharge machining machine, a moving metal wire is used as the tool electrode, and discharge is generated in the gap between the metal wire electrode and the workpiece, so as to machine the workpiece into the desired shape. Its wire feeding speed and workpiece quality are between those of high-speed wire cutting and slow-speed wire cutting, so it is called medium-speed wire cutting.

[0003] The mechanical mechanism of a general medium-speed wire cutting machine generally includes: a bed body, a transmission mechanism, a middle carriage, an upper carriage, a lower wire frame body, a workpiece frame support, a lower water spraying plate assembly, an upper water spraying plate assembly, an upper wire frame body, a Z-axis lifting mechanism, a column, and a wire transporting assembly. The Z-axis lifting mechanism, the head of the upper wire frame body, and the upper water spraying plate assembly are fixed on the column and finally fixed to the bed body. The bed body plays a physical support role for the entire machine tool. The electrode wire for cutting the workpiece is wound on the wire transporting assembly and sequentially passes through the wire tensioning mechanism, the upper wire frame body, the water spraying plate assembly, and the lower wire frame body, and finally returns to the wire transporting assembly to form a closed winding, thereby realizing the reciprocating cutting of the workpiece.

[0004] The wire frame heads of ordinary reciprocating machine tools are all fixed types. The deflection of the molybdenum wire is controlled by the wire guiding nozzles on the upper and lower spindle heads. A small angle is acceptable. When cutting at a large angle, the electrode wire will have hard friction with the hole edges of the gem water nozzles on the water spraying plate. The wear of both the electrode wire and the gem water nozzles will be aggravated. Even because the electrode wire is bent too much, excessive stress will cause the electrode wire to break, affecting wire cutting processing. Therefore, a large swing wire cutting machine is needed to achieve the effect of large taper processing. Summary of the Invention

[0005] The purpose of the present invention is to provide a new type of precision medium-speed wire cutting machine with large swing to solve the problem that when cutting at a large angle, the general upper wire frame and lower wire frame are both fixedly arranged and the cutting angle is very limited.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: It includes a bed body, and a wire feeding component, an XY-axis transmission mechanism, a middle carriage, an upper carriage, a workpiece support frame and a column are arranged in a supporting manner on the bed body. A wire expanding component is fixedly installed on the side wall of the column. An offline frame body is fixedly arranged on the outer wall of one end of the column close to the bed body. A Z-axis slide pillow moving along the Z-axis and a Z-axis lifting mechanism for driving the Z-axis slide pillow to move are fixedly installed on the outer wall of the column. A UV module is slidably arranged at the lower end of the Z-axis slide pillow. The UV module is fixedly connected with an online frame body. One end of the offline frame body close to the column is rotatably connected with a wire frame slide rod. One end of the online frame body close to the column is rotatably connected with the wire frame slide rod. An electrode wire follower component is rotatably installed at one end of the online frame body, the offline frame body and the wire frame slide rod away from the column. The online frame body, the offline frame body and the wire frame slide rod are located in the same plane. The online frame body, the offline frame body and the wire frame slide rod form a large taper link mechanism with large-angle movement.

[0007] By adopting the above technical solutions, the bed body is in a triangular structure. The part supporting the wire feeding component is a narrow side, and the part supporting the XY-axis transmission mechanism is a wide side. While taking into account the design accuracy, the overall mechanical strength is ensured. At the same time, the supporting strength at the limit position can be achieved during the actual machining movement of the machine tool, and the accuracy of the mechanical structure is ensured. The wire expanding component is installed on the side of the column. The middle of the column is hollowed out, which is convenient for the installation and arrangement of equipment such as counterweight blocks, water pipes, and cables. The Z-axis lifting mechanism is installed on the outer wall of the column. The reinforcing ribs are optimized to optimize the overall mechanical strength and ensure the mechanical accuracy during the movement of the Z-axis lifting mechanism and the UV axis. When in use, the electrode wire penetrates from the end of the online frame body into the end of the offline frame body. The online frame body, the offline frame body and the wire frame slide rod form a parallelogram with the electrode wire. Since the wire frame slide rod is rotatably connected to the offline frame body, and the online frame body is rotatably connected to the wire frame slide rod and is controlled by the connection of the UV module, when the UV module slides, it drives the online frame body to move synchronously. Also, since the wire frame slide rod, the offline frame body and the online frame body rotate in the same plane, the electrode wire can move synchronously with the large taper link mechanism under the tensioned state of the wire expanding component. The state of the electrode wire can be adjusted along the movement trajectory of the parallelogram to achieve the effect of independently adjusting the cutting angle according to actual needs.

[0008] Further, a lower wire frame bushing is fixedly arranged at one end of the lower wire frame body close to the column, the wire frame slide bar is fixedly connected to the lower wire frame bushing, an upper wire frame bushing is fixedly arranged at one end of the upper wire frame body close to the wire frame slide bar, the wire frame slide bar penetrates through the upper wire frame bushing, and the upper wire frame bushing is slidably arranged along the length direction of the wire frame slide bar. The electrode wire follow-up assembly includes an upper rotating shaft rotatably connected to the upper wire frame body and a lower rotating shaft rotatably connected to the lower wire frame body. Upper wire frame bearings and lower wire frame bearings are respectively arranged for the upper rotating shaft and the lower rotating shaft. Upper wire frame assemblies and lower wire frame assemblies are respectively fixedly arranged at the ends of the upper rotating shaft and the lower rotating shaft. Upper water spraying plates and lower water spraying plates are respectively hinged to the upper wire frame assemblies and the lower wire frame assemblies. An upper wire frame connecting rod is hinged to the upper water spraying plate, and a lower wire frame connecting rod is hinged to the lower water spraying plate. The end of the upper wire frame connecting rod is hinged to the upper wire frame bushing, and the end of the lower wire frame connecting rod is hinged to the lower wire frame bushing.

[0009] By adopting the above technical solution, the UV module will perform a linear motion, which will drive the upper wire frame body to perform a synchronous linear motion, and rotate back and forth along the hinge points at the ends of the upper wire frame connecting rod and the lower wire frame connecting rod, that is, a large taper connecting rod mechanism that moves along a parallelogram frame. The angle of movement of the UV module will be transmitted to the electrode wire through the large taper connecting rod mechanism, and finally act on the electrode wire, causing the cutting angle of the workpiece to change, thereby realizing precise cutting of the taper. At the same time, since the upper wire frame connecting rod is respectively hinged to the upper wire frame bushing and the upper water spraying plate, and the lower wire frame connecting rod is respectively hinged to the lower wire frame bushing and the lower water spraying plate, when the large taper connecting rod mechanism moves, the upper wire frame connecting rod and the lower wire frame connecting rod will drive the upper water spraying plate and the lower water spraying plate to adaptively follow under the action of the parallelogram frame, so as to effectively adjust the water spraying angle.

[0010] Further, the upper water spraying plate and the lower water spraying plate include U-shaped plates hinged to the upper wire frame body and the lower wire frame body. A rotating bearing is rotatably arranged between the U-shaped plates. Hinge holes are formed through both sides of the U-shaped plates. A gem water nozzle is fixedly arranged at one end of the U-shaped plate far from the hinge point. A liquid passing cavity is connected and communicated to the side of the gem water nozzle. A water inlet joint and an auxiliary water outlet are connected and communicated to the outer wall of the liquid passing cavity. The upper wire frame connecting rod and the lower wire frame connecting rod are hinged to the liquid passing cavity.

[0011] By adopting the above technical solution, during use, the electrode wire first passes through the rolling bearing and then passes out of the gem water nozzle. The water inlet joint is externally connected to the working fluid circulation system. The working fluid flows through the liquid cavity. The hinge hole is used for the hinge of the C-shaped plate and the end of the upper wire frame body or the lower wire frame body. Due to the existence of the electrode wire follow-up component, the water spraying angles of the upper water spraying plate and the lower water spraying plate will be adaptively adjusted to cooperate with the cutting angle conversion of the electrode wire. During large taper wire cutting, the water spraying part plays a key role. When water spraying operation is carried out, the upper wire frame connecting rod moves synchronously with the movement of the UV module, and the connected water spraying plate will naturally move along. Since the gem water nozzle will always maintain the same angle with the electrode wire and the axis of the gem water nozzle is always parallel to the electrode wire, the wire walking will not touch the edge of the gem water nozzle. It can effectively avoid the hard friction phenomenon between the electrode wire and the edge of the gem water nozzle during taper cutting, reduce the wear of both while effectively reducing the jitter of the electrode wire during the processing, and can effectively improve the stability during the processing, thereby improving the processing accuracy and the surface finish of the processed surface. The auxiliary water outlet can also be additionally connected to a universal joint water spraying pipe, which can freely adjust the water spraying angle and position, further optimize the water spraying effect, and then improve the accuracy and stability of the large taper.

[0012] Further, the Z-axis lifting mechanism includes a Z-axis slide rail fixedly arranged on the outer wall of the column. The Z-axis slide rail is fitted and slidably provided with a guide rail slider. The Z-axis ram is provided with a first driving motor and a first lead screw arranged for positioning rotation. The first lead screw is fixedly arranged on the outer wall of the column and one end is fixedly connected to the rotating shaft of the first driving motor. The first lead screw is threadedly engaged and penetrates through the guide rail slider. The Z-axis ram is fixedly connected to the guide rail slider. The lower end of the Z-axis ram is fixedly provided with an upper plate. The upper plate is provided with a UV slide rail along the length direction of the upper wire frame body. The UV slide rail is engaged and slidably provided with a UV slider. The bottom wall of the UV slider is fixedly installed with a middle plate. The UV module is fixedly arranged on the bottom wall of the middle plate. The bottom end of the UV module is fixedly provided with a lower plate fixedly connected to the upper wire frame body. The outer wall of the Z-axis ram is fixedly provided with a second lead screw arranged for positioning rotation and a second driving motor for driving the second lead screw to rotate. The second lead screw is threadedly engaged and penetrates through the UV slider.

[0013] By adopting the above technical solution, during use, the first driving motor cooperates with the first lead screw. By controlling the rotation of the first lead screw, the guide rail slider is controlled to slide up and down through screw thread cooperation. The guide rail slider drives the Z-axis ram to move up and down along the Z-axis slide rail. By controlling the number of turns of the first driving motor, the distance of the Z-axis slide rail moving up and down can be accurately controlled. Similarly, the second driving motor cooperates with the second lead screw to further accurately control the movement distance of the UV module in the horizontal direction. The first driving motor has a built-in brake function to prevent the machine head from moving down after power failure. The Z-axis ram is designed as a trapezoidal inclined rib frame casting structure, which can ensure high rigidity while reducing weight. When the Z-axis ram moves upward through the guide rail slider, the upper wire rack body moves through the traction of the wire rack slide bar. During the movement of the Z-axis ram, it will pull the guide rail slider and the UV module to drive the upper wire rack body to move simultaneously. Since they are on the same center, the error during movement will be reduced and the accuracy will not be affected. The UV module has the function of adjusting the angle of the upper wire rack body on the U and V axes. Since the upper wire rack body is connected to the wire rack slide bar through the upper wire rack bushing, and the upper wire rack assembly and the lower wire rack assembly are respectively rotatably connected to the upper wire rack body and the lower wire rack body, the angle can be adaptively adjusted when the UV module adjusts the U and V axes, further increasing the adjustable range of taper processing.

[0014] At the same time, the central positions of the upper wire rack body and the lower wire rack body are the same, and the accuracy is relatively high during coordinated movement, and the resulting error will be very small. The entire module operates smoothly with small errors and has stability. Generally, the Z-axis lifting mechanism ensures sufficient rigidity during the movement of the Z, U, and V axes, thus ensuring the cutting accuracy and stability.

[0015] Furthermore, the wire tightening assembly includes a wire tightening panel fixedly arranged on the outer wall of the column. A guide wheel seat is fixedly arranged on the outer wall of the top of the wire tightening panel. A vertical wire tightening slide rail is opened at the center of the wire tightening panel. A weight slider group is fitted and slidably arranged in the wire tightening slide rail. A limiting mounting plate extends from the outer wall of the guide wheel seat. A wire tightening control bolt is slidably arranged through the limiting mounting plate. A pin hole for the wire tightening control bolt to be fitted and locked is opened on the outer wall of the weight slider group. Elastic limiting anti-collision blocks are distributed on both sides at the bottom end of the wire tightening slide rail. The limiting anti-collision blocks are fixedly arranged on the outer wall of the wire tightening panel. A first fixed guide wheel and a second fixed guide wheel are fixedly installed on the outer wall of the guide wheel seat on both sides of the wire tightening slide rail. A moving guide wheel cooperating with the first fixed guide wheel and the second fixed guide wheel is fixedly arranged on the outer wall of the weight slider group.

[0016] By adopting the above technical scheme, when in use, the electrode wire passes through the first fixed guide wheel, the movable guide wheel and the second fixed guide wheel in sequence, and reciprocates on the guide wheel group. By controlling the two states of locking and unlocking of the wire expansion control bolt, the pre-hanging of the heavy hammer slider group can be achieved. After the operation is completed, the wire expansion control bolt is switched to another state to release the lock with the pin hole, so that the electrode wire can be naturally pulled by the heavy hammer slider group, and it can play a buffering role, which can compensate for the tension loss caused by the long-term use of the electrode wire and ensure the constant tension of the electrode wire. A limited anti-collision block is arranged under the wire expansion panel, which can prevent rigid collision and limit the position. The heavy hammer slider group moves linearly up and down on the wire expansion panel along the wire expansion slide rail, ensuring that the pulling direction of the electrode wire is always constant. The first fixed guide wheel, the second fixed guide wheel and the movable guide wheel are designed at a certain angle so that the electrode wire is always in a vertical state, so that the tension acting on the electrode wire during the up and down movement of the heavy hammer slider group can be always constant.

[0017] Furthermore, the large-taper connecting rod mechanism is equipped with an electrode wire protection device, which includes an upper water spray plate and a lower water spray plate that wrap the electrode wire. An upper wire rack water receiving tray is spaced apart and connected below the upper wire rack body. A first water baffle and a second water baffle are installed on both sides of the UV module above the upper wire rack body. The first water baffle is fixedly connected to the top wall of the upper wire rack, and the second water baffle is slidably pushed and pulled on the outer wall of the UV module. The first water baffle and the second water baffle cover the upper wire rack body. A wire rising groove is opened on the outer wall of the column for the wire rising assembly to be embedded and placed, and a wire rising guard plate covering the wire rising groove is hingedly provided on the outer wall of the column.

[0018] By adopting the above technical solution, there is also a high-speed running electrode wire above the upper wire rack body, and the working fluid attached to it will also splash everywhere. The upper wire rack water tray is located below it, which is responsible for collecting the dripping working fluid into the machine tool water tank, and then discharging it centrally, and then recycling it after filtering through the water tank. The first water baffle and the second water baffle are located above the upper wire rack to prevent the working fluid from splashing around, which can effectively prevent other foreign matter from entering, avoid affecting the operation of the electrode wire, ensure the safety and stability of wire cutting processing, and prevent the working fluid attached to the high-speed moving electrode wire from splashing. The wire expansion guard plate reserves the operation of the wire expansion control device The window also uses a hinge to facilitate the opening and closing of the wire expansion guard plate to completely wrap up all the electrode wires. The second water baffle is close to the end part of the upper wire rack body. Because the movement space here is limited and there is a UV module above, it is designed as a linear push-pull structure. Through the linear bearing assembly, it can achieve linear motion. When it is necessary to replace the electrode wire and other operations, you only need to push the second water baffle toward the UV module. At this time, the electrode wire will be exposed, which is convenient for operation. When the electrode wire is in normal cutting processing, push the second water baffle in the opposite direction to wrap up the electrode wire as a whole to achieve the purpose of protection, safety and environmental protection.

[0019] Furthermore, the wire transport assembly includes a wire transport drum, which is rotatably mounted on the top wall of the bed, and the wire transport drum is wound with an electrode wire.

[0020] Through the above technical solution, the electrode wire passes through the wire expansion assembly, the upper wire rack body and the lower wire rack body in sequence and then revolves around the wire conveying drum, thereby achieving a complete closed-loop reciprocating wire cutting effect on the workpiece.

[0021] Furthermore, the end of the wire rack slide rod is movably connected with a positioning plate, the positioning plate is fixedly arranged on the outer wall of the column, the bottom wall of the positioning plate is an arc surface that matches the rotation angle of the wire rack slide rod, the arc surface is provided with a slide rail groove along the length direction, and the slide rail groove is provided with an embedding groove on both sides along the length direction. The end of the wire rack slide rod is fixedly provided with a slider that fits the slide rail groove, and sliding strips that match the embedding groove are fixedly arranged on both sides of the slider. A limit plate covering one end of the slide rail groove is detachably fixed on one side of the positioning plate, and a limit block covering the slide rail groove is fixedly arranged on the side of the positioning plate away from the limit plate, and a hemispherical guide block is fixedly arranged on the side of the positioning plate close to the limit plate. The guide blocks are arranged in pairs, and the outer wall of the limit plate is provided with a guide groove that matches the guide block.

[0022] By adopting the above technical solution, since the large taper connecting rod mechanism is installed in a two-point fixed manner by means of the offline frame body and fixedly connecting the UV module, during the movement process, due to the small number of fixed points and all being movable connections, the overall structural strength and movement stability of the device are lacking. In the long-term use, the service life and stability are far less than those of the fixed installation structure. Therefore, the positioning plate added at the end of the wire frame slide bar, while allowing the wire frame slide bar to freely move at a fixed angle, adds another movable connection point with the column, thereby effectively enhancing the movement stability of the large taper connecting rod mechanism. During use, the slider at the end of the wire frame slide bar rotates at an angle along the hinge point of the wire frame slide bar and the offline frame body through the cooperation of the slide bar and the fitting groove and its own cooperation with the slide rail groove. The positioning plate can effectively suppress the shaking of the large taper connecting rod mechanism in the lateral direction. The limiting plate is detachably arranged. When removed, the slide rail groove is completely exposed, facilitating the installation of the slider. When installing the limiting plate, press the limiting plate against the surface of the positioning plate, and quickly find the installation position through the cooperation of the guiding block and the guiding groove, making the installation more convenient.

[0023] In summary, the beneficial technical effects of the present invention are as follows: 1. The large taper connecting rod mechanism is adopted, and the electrode wire can move synchronously with the large taper connecting rod mechanism under the tensioned state of the wire tightening assembly. The state of the electrode wire can be adjusted along the parallelogram movement trajectory to achieve the effect of independently adjusting the cutting angle according to actual needs; 2. The electrode wire follower assembly is adopted. When the large taper connecting rod mechanism moves, the upper wire frame connecting rod and the lower wire frame connecting rod will drive the upper water spraying plate and the lower water spraying plate to adaptively follow under the action of the parallelogram frame, thereby effectively adjusting the water spraying angle. Since the precious stone nozzle will always maintain the same angle as the electrode wire and the axis of the precious stone nozzle is always parallel to the electrode wire, the edge of the precious stone nozzle will not be touched during wire movement, effectively avoiding the hard friction phenomenon between the electrode wire and the edge of the precious stone nozzle during taper cutting; 3. The electrode wire protection device is adopted, which can effectively prevent other foreign objects from entering, avoid affecting the operation of the electrode wire, ensure the safety and stability of wire cutting processing, and at the same time prevent the working fluid attached to the high-speed moving electrode wire from splashing; 4. The Z-axis lifting mechanism and the UV module are adopted. When they cooperate in movement, the accuracy is relatively high, and the error caused is very small. The entire module operates smoothly with small errors and has stability. Generally, the Z-axis lifting mechanism ensures sufficient rigidity during the movement of the Z, U, and V axes, thereby ensuring the cutting accuracy and stability; 5. The positioning plate is adopted. While allowing the wire frame slide bar to freely move at a fixed angle, it adds another movable connection point with the column, thereby effectively enhancing the movement stability of the large taper connecting rod mechanism. Description of the Drawings

[0024] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification, and do not constitute a limitation to the present invention. In the accompanying drawings: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall structure of the expanding wire assembly in the present invention; Figure 3 is a schematic diagram of the overall structure of the Z-axis lifting mechanism in the present invention; Figure 4 is a front view structural schematic diagram of the large taper link mechanism in the present invention; Figure 5 is a schematic diagram of the overall structure of the C-shaped plate in the present invention Figure 1 ; Figure 6 is a schematic diagram of the overall structure of the C-shaped plate in the present invention Figure 2 ; Figure 7 is a schematic diagram of the overall structure of the Z-axis ram in the invention; Figure 8 is a rear view structural schematic diagram of the large taper link mechanism in the present invention; Figure 9 is an exploded structural schematic diagram of the positioning plate in the present invention Figure 1 ; Figure 10 is an exploded structural schematic diagram of the positioning plate in the present invention Figure 2 .

[0025] In the figure, 1 is the bed body; 101 is the XY-axis transmission mechanism; 102 is the middle carriage; 103 is the upper carriage; 104 is the workpiece support frame; 105 is the column; 2 is the wire feeding assembly; 3 is the wire tensioning assembly; 31 is the wire tensioning panel; 32 is the guide wheel seat; 33 is the wire tensioning slide rail; 34 is the weight slider group; 35 is the limit mounting plate; 36 is the wire tensioning control bolt; 37 is the pin hole; 38 is the limit anti-collision block; 39 is the first fixed guide wheel; 391 is the second fixed guide wheel; 40 is the moving guide wheel; 4 is the lower wire frame body; 41 is the lower wire frame bushing; 42 is the lower rotating shaft; 43 is the lower wire frame bearing; 44 is the lower wire frame assembly; 5 is the Z-axis lifting mechanism; 51 is the Z-axis ram; 52 is the Z-axis slide rail; 53 is the guide rail slider; 6 is the UV module; 7 is the upper wire frame body; 71 is the upper wire frame bushing; 72 is the upper rotating shaft; 73 is the upper wire frame bearing; 74 is the upper wire frame assembly; 8 is the wire frame slide bar; 9 is the wire electrode follower assembly; 10 is the large taper link mechanism; 11 is the upper water spraying plate; 111 is the upper wire frame link; 12 is the lower water spraying plate; 121 is the lower wire frame link; 13 is the C-shaped plate; 131 is the hinge hole; 132 is the gem water nozzle; 133 is the liquid passing cavity; 134 is the water inlet joint; 135 is the auxiliary water outlet; 136 is the rotating bearing; 14 is the first driving motor; 141 is the first lead screw; 142 is the upper plate; 143 is the UV slide rail; 144 is the UV slider; 145 is the middle plate; 146 is the lower plate; 15 is the second lead screw; 151 is the second driving motor; 16 is the wire electrode protection device; 161 is the upper wire frame water receiving tray; 162 is the first water baffle; 163 is the second water baffle; 164 is the wire tensioning groove; 165 is the wire tensioning guard plate; 17 is the wire feeding roller; 18 is the positioning plate; 181 is the slide rail groove; 182 is the fitting groove; 183 is the slider; 184 is the slide bar; 185 is the limit plate; 186 is the limit block; 187 is the guiding block; 188 is the guiding groove. Detailed implementation manners

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1 - 10 , the present invention provides the following technical solutions: It includes a bed body 1, and the bed body 1 is equipped with a wire feeding component 2, an XY-axis transmission mechanism 101, an intermediate carriage 102, an upper carriage 103, a workpiece support frame 104, and a column 105. A wire expanding component 3 is fixedly installed on the side wall of the column 105. An offline frame body 4 is fixedly arranged on the outer wall of the column 105 near one end of the bed body 1. A Z-axis slide pillow 51 that moves along the Z-axis and a Z-axis lifting mechanism 5 that drives the movement of the Z-axis slide pillow 51 are fixedly installed on the outer wall of the column 105. A UV module 6 is slidably arranged at the lower end of the Z-axis slide pillow 51. The UV module 6 is fixedly connected to an online frame body 7. One end of the offline frame body 4 close to the column 105 is rotatably connected to a wire frame slide rod 8. One end of the online frame body 7 close to the column 105 is rotatably connected to the wire frame slide rod 8. An electrode wire follower assembly 9 is rotatably installed at one end of the online frame body 7 and the offline frame body 4 away from the column 105. The online frame body 7, the offline frame body 4, and the wire frame slide rod 8 are located in the same plane. The online frame body 7, the offline frame body 4, and the wire frame slide rod 8 form a large taper link mechanism 10 with large-angle movement. The bed body 1 is in a triangular structure. The part that supports the wire feeding component 2 is the narrow side, and the part that supports the XY-axis transmission mechanism 101 is the wide side. While taking into account the design accuracy, the overall mechanical strength is ensured, and at the same time, the support strength at the limit position can be achieved during the actual machining movement of the machine tool, ensuring the accuracy of the mechanical structure. The wire expanding component 3 is installed on the side of the column 105. The middle of the column 105 is hollowed out, which is convenient for the installation and layout of equipment such as counterweight blocks, water pipes, and cables. The Z-axis lifting mechanism 5 is installed on the outer wall of the column 105. The reinforcing ribs are optimized to optimize the overall mechanical strength and ensure the mechanical accuracy during the movement of the Z-axis lifting mechanism 5 and the UV axis. When in use, the electrode wire passes through the end of the offline frame body 4 from the end of the online frame body 7. The online frame body 7, the offline frame body 4, and the wire frame slide rod 8 form a parallelogram with the electrode wire. Since the wire frame slide rod 8 is rotatably connected to the offline frame body 4, and the online frame body 7 is rotatably connected to the wire frame slide rod 8 and is controlled by the connection of the UV module 6, when the UV module 6 slides, it drives the online frame body 7 to move synchronously. Also, because the wire frame slide rod 8, the offline frame body 4, and the online frame body 7 rotate in the same plane, the electrode wire can move synchronously with the large taper link mechanism 10 under the tensioned state of the wire expanding component 3, and the state of the electrode wire can be adjusted along the movement trajectory of the parallelogram to achieve the effect of independently adjusting the cutting angle according to actual needs.

[0029] One end of the lower wire rack body 4 close to the column 105 is fixedly provided with a lower wire rack bushing 41, and the wire rack slide rod 8 is fixedly connected to the lower wire rack bushing 41. One end of the upper wire rack body 7 close to the wire rack slide rod 8 is fixedly provided with an upper wire rack bushing 71, and the wire rack slide rod 8 is arranged through the upper wire rack bushing 71. The upper wire rack bushing 71 is slidably arranged along the length direction of the wire rack slide rod 8. The wire electrode follow-up assembly 9 includes an upper rotating shaft 72 rotatably connected to the upper wire rack body 7 and a lower rotating shaft 42 rotatably connected to the lower wire rack body 4. The upper rotating shaft 72 and the lower rotating shaft 42 are respectively provided with an upper wire rack bearing 73 and a lower wire rack bearing 43. The ends of the upper rotating shaft 72 and the lower rotating shaft 42 are respectively fixedly provided with an upper wire rack assembly 74 and a lower wire rack assembly 44. The upper wire rack assembly 74 and the lower wire rack assembly 44 are respectively hinged with an upper water spraying plate 11 and a lower water spraying plate 12. The upper water spraying plate 11 is hinged with an upper wire rack connecting rod 111, and the lower water spraying plate 12 is hinged with a lower wire rack connecting rod 121. The end of the upper wire rack connecting rod 111 is hinged with the upper wire rack bushing 71, and the end of the lower wire rack connecting rod 121 is hinged with the lower wire rack bushing 41. The UV module 6 will perform a linear motion, which will drive the upper wire rack body 7 to perform a synchronous linear motion, and rotate in the front-rear direction along the hinge points at the ends of the upper wire rack connecting rod 111 and the lower wire rack connecting rod 121, that is, the large taper connecting rod mechanism 10 that moves along the parallelogram frame. The movement angle of the UV module 6 will be transmitted to the wire electrode through the large taper connecting rod mechanism 10, and finally act on the wire electrode, causing the cutting angle of the workpiece to change, thereby realizing the precise cutting of the taper. At the same time, since the upper wire rack connecting rod 111 is respectively hinged with the upper wire rack bushing 71 and the upper water spraying plate 11, and the lower wire rack connecting rod 121 is respectively hinged with the lower wire rack bushing 41 and the lower water spraying plate 12, when the large taper connecting rod mechanism 10 moves, the upper wire rack connecting rod 111 and the lower wire rack connecting rod 121 will drive the upper water spraying plate 11 and the lower water spraying plate 12 to adaptively follow under the action of the parallelogram frame, so as to effectively adjust the water spraying angle.

[0030] The upper water spraying plate 11 and the lower water spraying plate 12 include a U-shaped plate 13 that hinges the upper wire frame body 7 and the lower wire frame body 4. A rotating bearing 136 is rotatably connected between the U-shaped plates 13. Hinge holes 131 are drilled through both sides of the U-shaped plate 13. A precious stone water nozzle 132 is fixedly arranged at one end of the U-shaped plate 13 away from the hinge point. A liquid passing cavity 133 is connected and communicated on the side of the precious stone water nozzle 132. A water inlet pipe joint 134 and an auxiliary water outlet 135 are connected and communicated on the outer wall of the liquid passing cavity 133. The upper wire frame connecting rod 111 and the lower wire frame connecting rod 121 are hinged to the liquid passing cavity 133. During use, the electrode wire first passes through the rolling bearing and then passes through the precious stone water nozzle 132. The water inlet pipe joint 134 is externally connected to the working liquid circulation system. The working liquid flows through the liquid passing cavity 133. The hinge hole 131 is used for the hinge of the U-shaped plate 13 and the end of the upper wire frame body 7 or the lower wire frame body 4. Due to the existence of the electrode wire follow-up component 9, the water spraying angles of the upper water spraying plate 11 and the lower water spraying plate 12 will be adaptively adjusted to cooperate with the cutting angle conversion of the electrode wire. During large taper wire cutting, the water spraying part plays a key role. When water spraying operation is carried out, the upper wire frame connecting rod 111 moves synchronously with the movement of the UV module 6, and the connected water spraying plate will naturally move accordingly. Since the precious stone water nozzle 132 will always maintain the same angle with the electrode wire, the axis of the precious stone water nozzle 132 is always parallel to the electrode wire. Therefore, the wire walking will not touch the edge of the precious stone water nozzle 132, which can effectively avoid the hard friction phenomenon between the electrode wire and the edge of the precious stone water nozzle 132 during taper cutting. While reducing the wear of both, it can also effectively reduce the jitter of the electrode wire during the processing, which can effectively improve the stability during the processing, thereby improving the processing accuracy and the surface finish of the processing. The auxiliary water outlet 135 can also be additionally connected to a universal joint water spraying pipe, and the water spraying angle and position can be freely adjusted to further optimize the water spraying effect, and then improve the accuracy and stability of the large taper.

[0031] The Z-axis lifting mechanism 5 includes a Z-axis slide rail 52 fixedly arranged on the outer wall of the column 105, the Z-axis slide rail 52 is slidably provided with a guide rail slider 53, the Z-axis slide ram 51 is equipped with a first drive motor 14 and a first lead screw 141 for positioning and rotating, the first lead screw 141 is fixedly arranged on the outer wall of the column 105 and one end is fixedly connected to the rotating shaft of the first drive motor 14, the first lead screw 141 is threadedly matched to penetrate the guide rail slider 53, the Z-axis slide ram 51 is fixedly connected to the guide rail slider 53, the lower end of the Z-axis slide ram 51 is fixedly provided with an upper plate 142, and the upper plate 142 is provided with a UV slide rail 143 along the length direction of the upper wire rack body 7 The UV slide rail 143 is slidably engaged with a UV slider 144, a middle plate 145 is fixedly installed on the bottom wall of the UV slider 144, a UV module 6 is fixedly arranged on the bottom wall of the middle plate 145, a lower plate 146 fixedly connected to the upper wire rack body 7 is fixedly arranged at the bottom end of the UV module 6, a second lead screw 15 for positioning and rotation and a second drive motor 151 for driving the second lead screw 15 to rotate are fixedly arranged on the outer wall of the Z-axis slide 51, the second lead screw 15 is threadedly matched to penetrate the UV slider 144, when in use, the first drive motor 14 cooperates with the first lead screw 141, and controls the rotation of the first lead screw 141 to control the guide rail slider 53 through thread matching. The guide rail slider 53 drives the Z-axis slide 51 to move up and down along the Z-axis slide rail 52. By controlling the number of revolutions of the first drive motor 14, the up and down movement distance of the Z-axis slide rail 52 can be accurately controlled. Similarly, the second drive motor 151 cooperates with the second lead screw 15 to further accurately control the horizontal movement distance of the UV module 6. The first drive motor 14 has a built-in brake function to prevent the head from moving down after power failure. The Z-axis slide 51 is designed as a trapezoidal oblique rib frame casting structure to ensure high rigidity while reducing weight. When the Z-axis slide 51 moves upward through the guide rail slider 53, the upper wire rack body 7 is connected to the wire rack slide rod 8. During the traction movement, the Z-axis slide 51 will pull the guide rail slider 53 and the UV module 6 to pull the upper wire rack body 7 to move at the same time. Since they are at the same center, the error in the movement process will be reduced and the accuracy will not be affected. The UV module 6 has the function of adjusting the angle of the upper wire rack body 7 in the U and V axes. Since the upper wire rack body 7 is connected to the wire rack slide rod 8 through the upper wire rack shaft sleeve 71 and the upper wire rack assembly 74 and the lower wire rack assembly 44 are rotatably connected to the upper wire rack body 7 and the lower wire rack body 4 respectively, the angle can be adaptively adjusted when the UV module 6 adjusts the U and V axes to further improve the adjustable range of taper processing.

[0032] At the same time, the center positions of the upper wire rack body 7 and the lower wire rack body 4 are the same, and the accuracy during coordinated movement is relatively high, the error caused will be very small, the entire module can be operated smoothly, the error is small, and it has stability. Overall, the Z-axis lifting mechanism 5 ensures sufficient rigidity during the movement of the Z, U, and V axes, thereby ensuring the accuracy and stability of cutting.

[0033] The wire tensioning assembly 3 includes a wire tensioning panel 31 fixedly arranged on the outer wall of the column 105. A guide wheel seat 32 is fixedly arranged on the outer wall of the top of the wire tensioning panel 31. A vertical wire tensioning slide rail 33 is opened at the center of the wire tensioning panel 31. A weight slider group 34 is fitted and slidably arranged in the wire tensioning slide rail 33. A limit mounting plate 35 extends from the outer wall of the guide wheel seat 32. A wire tensioning control bolt 36 is slidably arranged through the limit mounting plate 35. A pin hole 37 for the wire tensioning control bolt 36 to be fitted and locked is opened on the outer wall of the weight slider group 34. Elastic limit anti-collision blocks 38 are distributed on both sides at the bottom end of the wire tensioning slide rail 33. The limit anti-collision blocks 38 are fixedly arranged on the outer wall of the wire tensioning panel 31. A first fixed guide wheel 39 and a second fixed guide wheel 391 are fixedly installed on the outer wall of the guide wheel seat 32 on both sides of the wire tensioning slide rail 33. A moving guide wheel 40 is fixedly arranged on the outer wall of the weight slider group 34 to cooperate with the first fixed guide wheel 39 and the second fixed guide wheel 391. During use, the electrode wire sequentially passes through the first fixed guide wheel 39, the moving guide wheel 40, and the second fixed guide wheel 391 and reciprocates on the guide wheel group. By controlling the two states of locking and unlocking of the wire tensioning control bolt 36, pre-hanging of the weight slider group 34 can be achieved. After the operation is completed, switching to the other state of the wire tensioning control bolt 36 to release the locking with the pin hole 37 can achieve that the electrode wire is naturally pulled by the weight slider group 34, and it can play a buffering role, compensate for the tension loss caused by the elongation of the electrode wire during long-term use, and ensure the constant tension of the electrode wire. A limit anti-collision block 38 is arranged below the wire tensioning panel 31, and the limit anti-collision block 38 can play a role in preventing rigid collision and limiting. The weight slider group 34 moves linearly up and down on the wire tensioning panel 31 along the wire tensioning slide rail 33, ensuring that the pulling force direction of the electrode wire is always constant. Through a certain angle design of the first fixed guide wheel 39, the second fixed guide wheel 391, and the moving guide wheel 40, the electrode wire is always in a vertical state, so that the tension acting on the electrode wire during the up and down movement of the weight slider group 34 is always constant.

[0034] The large taper connecting rod mechanism 10 is equipped with an electrode wire protection device 16. The electrode wire protection device 16 includes an upper water spraying plate 11 and a lower water spraying plate 12 that wrap the electrode wire. A wire upper support body water receiving tray 161 is connected at intervals below the wire upper support body 7. Above the wire upper support body 7, a first water baffle 162 and a second water baffle 163 located on both sides of the UV module 6 are installed. The first water baffle 162 is fixedly connected to the top wall of the wire upper support. The second water baffle 163 is slidably pushed and pulled on the outer wall of the UV module 6. The first water baffle 162 and the second water baffle 163 cover the upper part of the wire upper support body 7. A wire expanding groove 164 for fitting and placing the wire expanding assembly 3 is provided on the outer wall of the column 105. A wire expanding protection plate 165 that covers the wire expanding groove 164 is hingedly provided on the outer wall of the column 105. There is also a high-speed rotating electrode wire above the wire upper support body 7, and the working fluid attached to it will also splash everywhere. The wire upper support body water receiving tray 161 is located below it and is responsible for collecting and aggregating the dripping working fluid into the machine tool water tank, and then discharging it centrally. After being filtered by the water tank, it is recycled. The first water baffle 162 and the second water baffle 163 are located above the wire upper support. The purpose is to prevent the working fluid from splashing around, which can effectively prevent other foreign objects from entering, avoid affecting the operation of the electrode wire, ensure the safety and stability of wire cutting processing, and at the same time prevent the working fluid attached to the high-speed moving electrode wire from splashing. The wire expanding protection plate 165 reserves an operation window for the wire expanding control device and also facilitates the opening and closing of the wire expanding protection plate 165 through a hinge, wrapping all the electrode wires completely. The end part of the second water baffle 163 close to the wire upper support body 7 is designed as a linear push-pull structure through a linear bearing assembly because the movement space is limited here and there is a UV module 6 above it, so that it can achieve linear movement. When operations such as replacing the electrode wire are required, only need to push the second water baffle 163 towards the UV module 6, and at this time the electrode wire will be exposed, facilitating the operation. When the electrode wire is in normal cutting processing, push the second water baffle 163 in the opposite direction to wrap the whole electrode wire, achieving the purpose of protection, which is safe and environmentally friendly.

[0035] The wire transporting assembly 2 includes a wire transporting roller 17. The wire transporting roller 17 is rotatably installed on the top wall of the bed body 1, and the electrode wire is wound around the wire transporting roller 17.

[0036] Through the above technical solution, the electrode wire passes through the wire expanding assembly 3, the wire upper support body 7, and the wire lower support body 4 in sequence and is wound around the wire transporting roller 17, achieving the function of a complete closed-loop reciprocating wire movement for cutting the workpiece.

[0037] The end of the wire rack sliding rod 8 is movably connected with a positioning plate 18. The positioning plate 18 is fixedly arranged on the outer wall of the upright column 105. The bottom wall of the positioning plate 18 is an arc surface that matches the rotation angle of the wire rack sliding rod 8. A slide rail groove 181 is opened along the length direction of the arc surface. Fitting grooves 182 are opened on both sides of the slide rail groove 181 along the length direction. A slider 183 that fits the slide rail groove 181 is fixedly arranged at the end of the wire rack sliding rod 8. Slide bars 184 that match the fitting grooves 182 are fixedly arranged on both sides of the slider 183. A limiting plate 185 that covers one end of the slide rail groove 181 is detachably fixed on one side of the positioning plate 18. A limiting block 186 that covers the slide rail groove 181 is fixedly arranged on the side of the positioning plate 18 away from the limiting plate 185. A hemispherical guiding block 187 is fixedly arranged on the surface of the positioning plate 18 close to the limiting plate 185. The guiding blocks 187 are arranged in pairs. A guiding groove 188 that matches the guiding block 187 is opened on the outer wall of the limiting plate 185.

[0038] By adopting the above technical solution, since the large taper link mechanism 10 is installed in a two-point fixed manner by connecting the lower wire rack body 4 and the fixedly connected UV module 6, during the movement process, due to the small number of fixed points and all being movably connected, the overall structural strength and movement stability of the device are lacking. In the long-term use, the service life and stability are far less than those of the fixed installation structure. Therefore, the positioning plate 18 added at the end of the wire rack sliding rod 8, while allowing the wire rack sliding rod 8 to freely move at a fixed angle, adds another movable connection point with the upright column 105, thereby effectively enhancing the movement stability of the large taper link mechanism 10. During use, the slider 183 at the end of the wire rack sliding rod 8 rotates at an angle along the hinge point of the wire rack sliding rod 8 and the lower wire rack body 4 through the cooperation of the slide bar 184 and the fitting groove 182 and its own cooperation with the slide rail groove 181. The positioning plate 18 can effectively suppress the shaking of the large taper link mechanism 10 in the lateral direction. The limiting plate 185 is detachably arranged. When removed, the slide rail groove 181 is completely exposed, facilitating the installation of the slider 183. When installing the limiting plate 185, press the limiting plate 185 against the surface of the positioning plate 18, and quickly find the installation position through the cooperation of the guiding block 187 and the guiding groove 188, making the installation more convenient.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to this process, method, article or device.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A novel precision medium-speed large-swing wire cutting machine tool, comprising a bed (1), wherein the bed (1) is equipped with a wire transport component (2), an XY axis transmission mechanism (101), a middle support plate (102), an upper support plate (103), a workpiece support frame (104) and a column (105), characterized in that: A wire tensioning assembly (3) is fixedly installed on the side wall of the column (105); a lower wire rack body (4) is fixedly installed on the outer wall of the column (105) close to one end of the bed (1); a Z-axis slide (51) that moves along the Z-axis and a Z-axis lifting mechanism (5) that drives the Z-axis slide (51) to move are fixedly installed on the outer wall of the column (105); a UV module (6) is slidably installed on the lower end of the Z-axis slide (51); the UV module (6) is fixedly connected to the upper wire rack body (7); the lower wire rack body (4) is close to the column (105). One end is rotatably connected to a wire rack slide bar (8); one end of the upper wire rack body (7) close to the column (105) is rotatably connected to the wire rack slide bar (8); one end of the upper wire rack body (7) and the lower wire rack body (4) away from the column (105) is rotatably installed with an electrode wire follower assembly (9); the upper wire rack body (7), the lower wire rack body (4) and the wire rack slide bar (8) are located in the same plane; the upper wire rack body (7), the lower wire rack body (4) and the wire rack slide bar (8) form a large-taper connecting rod mechanism (10) with large-angle movement.

2. According to claim 1, a new type of precision medium-speed large-swing wire cutting machine tool is characterized by: A lower wire rack shaft sleeve (41) is fixedly provided at one end of the lower wire rack body (4) close to the column (105); the wire rack slide rod (8) is fixedly connected to the lower wire rack shaft sleeve (41); an upper wire rack shaft sleeve (71) is fixedly provided at one end of the upper wire rack body (7) close to the wire rack slide rod (8); the wire rack slide rod (8) passes through the upper wire rack shaft sleeve (71); the upper wire rack shaft sleeve (71) is slidably provided along the length direction of the wire rack slide rod (8); the electrode wire follower assembly (9) comprises an upper rotating shaft (72) rotatably connected to the upper wire rack body (7) and a lower rotating shaft (42) rotatably connected to the lower wire rack body (4); the upper rotating shaft (72) and the lower rotating shaft (42) are respectively An upper wire rack bearing (73) and a lower wire rack bearing (43) are provided in a matching manner. An upper wire rack assembly (74) and a lower wire rack assembly (44) are fixedly provided at the ends of the upper rotating shaft (72) and the lower rotating shaft (42), respectively. An upper water spray plate (11) and a lower water spray plate (12) are hingedly provided on the upper wire rack assembly (74) and the lower wire rack assembly (44), respectively. The upper water spray plate (11) is hingedly provided with an upper wire rack connecting rod (111), and the lower water spray plate (12) is hingedly provided with a lower wire rack connecting rod (121). The end of the upper wire rack connecting rod (111) is hingedly connected to an upper wire rack shaft sleeve (71), and the end of the lower wire rack connecting rod (121) is hingedly connected to a lower wire rack shaft sleeve (41).

3. According to claim 2, a new type of precision medium-speed large-swing wire cutting machine tool is characterized by: The upper water spray plate (11) and the lower water spray plate (12) include a profile plate (13) which is hinged to the upper wire rack body (7) and the lower wire rack body (4); a rotating bearing (136) is provided between the profile plates (13) for rotational connection; hinge holes (131) are provided through both sides of the profile plates (13); a jewel water nozzle (132) is fixedly provided at one end of the profile plate (13) away from the hinge point; a liquid cavity (133) is provided on the side of the jewel water nozzle (132); a water inlet pipe joint (134) and an auxiliary water outlet (135) are provided on the outer wall of the liquid cavity (133); and the upper wire rack connecting rod (111) and the lower wire rack connecting rod (121) are hingedly provided to the liquid cavity (133).

4. According to claim 1, a new type of precision medium-speed large-swing wire cutting machine tool is characterized by: The Z-axis lifting mechanism (5) comprises a Z-axis slide rail (52) fixedly arranged on the outer wall of the column (105); the Z-axis slide rail (52) is slidably provided with a guide rail slider (53); the Z-axis slide ram (51) is matched with a first drive motor (14) and a first lead screw (141) arranged for positioning and rotation; the first lead screw (141) is fixedly arranged on the outer wall of the column (105) and one end of the first lead screw (141) is fixedly connected to the rotating shaft of the first drive motor (14); the first lead screw (141) is threadedly matched to penetrate the guide rail slider (53); the Z-axis slide ram (51) is fixedly connected to the guide rail slider (53); the lower end of the Z-axis slide ram (51) is fixedly provided with an upper plate (142); The upper plate (142) is provided with a UV slide rail (143) along the length direction of the upper wire rack body (7); the UV slide rail (143) is slidably engaged with a UV slider (144); a middle plate (145) is fixedly installed on the bottom wall of the UV slider (144); the UV module (6) is fixedly arranged on the bottom wall of the middle plate (145); a lower plate (146) fixedly connected to the upper wire rack body (7) is fixedly arranged at the bottom end of the UV module (6); a second lead screw (15) for positioning and rotating and a second drive motor (151) for driving the second lead screw (15) to rotate are fixedly arranged on the outer wall of the Z-axis slide (51); the second lead screw (15) is threadedly matched to penetrate the UV slider (144).

5. According to claim 1, the novel precision medium-speed large-swing wire cutting machine tool is characterized by: The wire-raising assembly (3) comprises a wire-raising panel (31) fixedly arranged on the outer wall of the column (105); a guide wheel seat (32) is fixedly arranged on the top outer wall of the wire-raising panel (31); a vertical wire-raising slide rail (33) is provided at the center of the wire-raising panel (31); a heavy hammer slider group (34) is slidably arranged in the wire-raising slide rail (33); a limit mounting plate (35) is extended from the outer wall of the guide wheel seat (32); a wire-raising control bolt (36) is slidably arranged through the limit mounting plate (35); and a wire-raising control bolt (36) is slidably arranged on the outer wall of the heavy hammer slider group (34). A pin hole (37) is provided for locking the wire tension control bolt (36). Elastic limit anti-collision blocks (38) are distributed on both sides of the bottom end of the wire tension slide rail (33). The limit anti-collision blocks (38) are fixedly arranged on the outer wall of the wire tension panel (31). The outer wall of the guide wheel seat (32) is fixedly installed with a first fixed guide wheel (39) and a second fixed guide wheel (391) located on both sides of the wire tension slide rail (33). The outer wall of the heavy hammer slider group (34) is fixedly provided with a movable guide wheel (40) that cooperates with the first fixed guide wheel (39) and the second fixed guide wheel (391).

6. According to claim 3, the novel precision medium-speed large-swing wire cutting machine tool is characterized by: The large-taper connecting rod mechanism (10) is equipped with an electrode wire protection device (16), and the electrode wire protection device (16) includes an upper water spray plate (11) and a lower water spray plate (12) that wrap the electrode wire. An upper wire rack water receiving tray (161) is spaced and connected below the upper wire rack body (7). A first water baffle plate (162) and a second water baffle plate (163) located on both sides of the UV module (6) are installed above the upper wire rack body (7). The first water baffle plate (162) and the second water baffle plate (163) are installed above the upper wire rack body (7). The plate (162) is fixedly connected to the top wall of the upper wire rack, the second water baffle plate (163) is slidably pushed and pulled on the outer wall of the UV module (6), the first water baffle plate (162) and the second water baffle plate (163) are arranged to cover the upper wire rack body (7), the outer wall of the column (105) is provided with a wire expansion groove (164) for the wire expansion assembly (3) to be embedded and placed, and the outer wall of the column (105) is hingedly provided with a wire expansion guard plate (165) covering the wire expansion groove (164).

7. According to claim 1, the novel precision medium-speed large-swing wire cutting machine tool is characterized by: The wire transport assembly (2) comprises a wire transport roller (17), the wire transport roller (17) is rotatably mounted on the top wall of the bed (1), and the wire transport roller (17) is wound with an electrode wire.

8. The novel precision medium-speed large-swing wire cutting machine tool according to claim 6 is characterized by: The end of the wire rack slide rod (8) is movably connected with a positioning plate (18), and the positioning plate (18) is fixedly arranged on the outer wall of the column (105). The bottom wall of the positioning plate (18) is an arc surface that matches the rotation angle of the wire rack slide rod (8). The arc surface is provided with a slide rail groove (181) along the length direction, and the slide rail groove (181) is provided with a fitting groove (182) on both sides along the length direction. A slider (183) that fits the slide rail groove (181) is fixedly arranged at the end of the wire rack slide rod (8), and matching fitting grooves (182) are fixedly arranged on both sides of the slider (183). 2) of the slide bar (184), a limiting plate (185) covering one end of the slide rail groove (181) is detachably fixed on one side of the positioning plate (18), a limiting block (186) covering the slide rail groove (181) is fixedly arranged on the side of the positioning plate (18) away from the limiting plate (185), a hemispherical guide block (187) is fixedly arranged on the side of the positioning plate (18) close to the limiting plate (185), the guide blocks (187) are arranged in pairs, and a guide groove (188) cooperating with the guide block (187) is opened on the outer wall of the limiting plate (185).

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