Gear set metal cutting machining device

Abstract

The application discloses a gear set metal cutting processing device and belongs to the technical field of gear processing. The device comprises a machine base, a sliding table located at the end of the machine base, a wire cutting main machine installed on the top of the sliding table, and wire racks symmetrically installed on the side of the wire cutting main machine. The sealing cover is tightly attached to the top of the gear blank through the attaching mechanism, a relatively sealed environment is formed in the processing area, and the diversion and diffusion of the working liquid are avoided. In combination with the water pump and the negative pressure fan on the side of the circulating filter bin, the working liquid is directionally transported into the sealing cover through the drain pipe on the one hand, and the directional guiding airflow is formed in the wire pipe by the negative pressure fan on the other hand. The penetration speed of the working liquid along the cutting route to the narrow processing gap is forcedly accelerated, and the working liquid precisely covers the discharge core area. The design can not only quickly remove the metal scraps generated by the electric erosion, solve the secondary discharge problem caused by the retention of the scraps in the gap, but also efficiently guide the heat in the discharge area, so that the electrode wire is prevented from being burnt out due to local high temperature.

Description

Technical Field

[0001] This invention relates to a cutting and processing device, and more particularly to a metal cutting and processing device for gear sets, belonging to the field of gear processing technology. Background Technology

[0002] As the core component of a mechanical transmission system, the gear set's tooth profile accuracy directly determines the transmission efficiency, operational stability, and equipment service life. In the existing gear set wire EDM machining process, it is necessary to pre-drill wire-passing holes in the tooth groove area of ​​the circular gear blank to allow molybdenum wire or copper wire to pass through. Then, high-frequency electrical pulse discharge between the electrode wire and the workpiece is used to erode the metal material using the high temperature of the electric arc, gradually cutting out the tooth profile that meets the design requirements.

[0003] However, the diameter of the electrode wire is usually only 0.03-0.2mm, and the machining gap is extremely narrow. In the existing water-spraying working fluid supply method, it is difficult to accurately spray the working fluid into the narrow discharge gap. As a result, the metal debris generated by electro-erosion in the gap cannot be discharged in time, which can easily cause secondary discharge and cause defects such as pitting and streaks on the tooth surface. This seriously reduces the surface roughness and tooth profile accuracy. At the same time, the heat in the discharge area cannot be efficiently removed. Local high temperature can easily cause the electrode wire to vibrate and burn out. This not only interrupts the processing flow, but also causes the cumulative tooth pitch error to exceed the standard due to electrode wire deviation. In addition, the working fluid will splash outward, which not only wastes the working fluid, but also contaminates the equipment workbench and surrounding parts, increasing the workload of equipment cleaning and maintenance.

[0004] To address this issue, a gear set metal cutting and processing device was designed. Summary of the Invention

[0005] The main objective of this invention is to provide a gear set metal cutting processing device. A sealing cover is tightly fitted to the top of the gear blank using a bonding mechanism, creating a relatively sealed environment in the processing area to prevent the working fluid from diverting and spreading. Combined with a water pump and negative pressure fan on the side of the circulating filter chamber, the working fluid is directionally delivered into the sealing cover through a drain pipe. Simultaneously, the negative pressure fan creates a directional airflow in the upper pipe, forcibly accelerating the penetration speed of the working fluid along the cutting path into the narrow processing gap. This ensures that the working fluid accurately covers the core discharge area. This design not only quickly removes metal debris generated by electro-erosion, solving the problem of secondary discharge caused by debris retention in the gap, but also efficiently dissipates heat from the discharge area, preventing electrode wire burnout due to localized high temperatures. The device uses a bonding mechanism to tightly fit the receiving cover to the bottom of the gear blank, combined with a negative pressure suction design in the lower pipe and air inlet pipe, to form a... Directional guidance and negative pressure recovery completely eliminate the splashing of working fluid, ensuring the equipment's workbench and surrounding environment remain dry and clean. Simultaneously, the working fluid is directly introduced into the circulating filter chamber via a DC pipe through the receiving hood, eliminating the need for additional collection processes. Combined with the purification treatment of the filter element and demister within the chamber, a closed-loop circulation of the working fluid is achieved, enhancing its practicality. A fixing mechanism consisting of a fixed plate, first guide groove, first slider, bidirectional screw, adjusting wheel, clamping plate, V-groove, limiting groove, steel belt, control chamber, second guide groove, second slider, tension spring, and extrusion roller is installed at the end of the machine base. The V-groove on the clamping plate achieves bidirectional centering and extrusion limiting. The steel belt adheres to the outer circumference of the gear blank, significantly increasing the contact area and achieving rotational limiting and stable clamping of the blank. The tension spring and extrusion roller within the control chamber adapt to changes in the blank's outer diameter, maintaining the steel belt's tension at all times, effectively preventing blank displacement or shaking during processing.

[0006] The objective of this invention can be achieved by adopting the following technical solution: A metal cutting processing device for gear sets includes a base, a slide table located at the end of the base, a wire cutting host mounted on the top of the slide table, and wire frames symmetrically mounted on the sides of the wire cutting host. An upper wire tube is fixedly installed between the opposite ends of the two sets of wire frames. A sealing cover is fixedly connected to the bottom end of the upper wire tube. A lower wire tube is set directly below the sealing cover. A receiving cover is fixedly sleeved on the outside of the lower wire tube. The electrode wire of the wire cutting host passes through the interior of the upper wire tube and the sealing cover in sequence and exits from the interior of the lower wire tube. A bonding mechanism is provided between the two sets of wire frames. The bonding mechanism drives the sealing cover and the receiving cover to fit tightly against the top and bottom of the gear blank, respectively. The machine base is equipped with a circulating filter chamber. A water pump is installed on the side of the circulating filter chamber. The input end of the water pump is connected to the inside of the circulating filter chamber, and the output end of the water pump is connected to the inside of the sealing cover by a drain pipe. A negative pressure fan is fixedly installed on the top of the circulating filter chamber. An exhaust pipe is connected between the output end of the negative pressure fan and the inside of the upper pipe to form a directional airflow in the upper pipe to accelerate the penetration of the working fluid into the processing gap. A DC pipe connects the receiving hood to the interior of the circulating filter chamber, and an air inlet pipe connects the lower pipe to the interior of the circulating filter chamber, which is used to recover the processed working fluid under negative pressure and introduce it into the circulating filter chamber. A fixing mechanism is provided at the top of the machine base away from the wire EDM host to position and clamp the gear blank.

[0007] Preferably, the bonding mechanism includes a vertical rod, a sliding sleeve, a compression spring, and a fixing rod; The vertical pole is fixedly installed between two sets of wire frames. The sliding sleeves are symmetrically slidably fitted at both ends of the vertical pole. The compression springs are symmetrically fitted at both ends of the vertical pole, and the two ends of the compression springs abut against the sliding sleeves and the wire frames respectively. The sides of the sliding sleeves are fixed with fixing rods. The two sets of fixing rods are fixedly connected to the upper wire tube and the lower wire tube respectively.

[0008] Preferably, the outer side of the sliding sleeve is threaded with positioning bolts, and the positioning bolts extend to the inner side of the sliding sleeve and contact the side of the vertical rod.

[0009] Preferred configuration: The interior of the circulating filter chamber is horizontally equipped with an installation plate, on which a filter element can be detachably installed. A demister is provided at the top of the circulating filter chamber, and the DC pipe and air inlet pipe extend to the bottom of the demister.

[0010] Preferably, the bottom of the sealing cover and the top of the receiving cover are both provided with sealing rings, the top of the lower tube is conical, and the top of the lower tube is lower than the top horizontal plane of the receiving cover.

[0011] Preferred: The fixing mechanism includes a fixing plate, a clamping plate, a V-groove, a limiting groove, a steel strip, a spacing adjustment component, and a tensioning component; The fixing plate is vertically fixed to the end of the machine base. The fixing plate is symmetrically equipped with clamping plates on its inner side. The fixing plate is equipped with a spacing adjustment component for adjusting the position of the two sets of clamping plates. The inner side of each clamping plate is provided with a V-shaped groove. The inner side of each V-shaped groove is provided with a limiting groove. A steel strip is provided between the two ends of the limiting groove. The inside of each clamping plate is provided with a tensioning component to fit the steel strip with the blank.

[0012] Preferably, the spacing adjustment assembly includes a first guide groove, a first slider, and a bidirectional screw; The first guide groove is opened on the inner side of the fixed plate parallel to the width direction of the base. The first slider is slidably arranged at both ends of the first guide groove. Two sets of clamping plates are respectively fixed on the first slider. A bidirectional screw is rotatably installed between the two ends of the first guide groove. The two ends of the bidirectional screw are respectively threaded to the first slider.

[0013] Preferably, one end of the bidirectional screw extends to the side of the fixed plate, and an adjusting wheel is fixed to the end of the bidirectional screw located outside the fixed plate, and a hand crank is provided on the outside of the adjusting wheel.

[0014] Preferably, the tensioning assembly includes a control cavity, a second guide groove, a second slider, a tensioning spring, and a compression roller; The two ends of the steel strip are connected end to end. The control cavity is opened inside the clamping plate. The two ends of the inner side of the control cavity are provided with second guide grooves. The second slider is slidably arranged inside the second guide groove. A tension spring is provided between the side of the second slider near the V-shaped groove and the inner end of the second guide groove. An extrusion roller that fits against the inner side of the steel strip is rotatably mounted on the second slider.

[0015] Preferably, the outer side of the steel strip is uniformly provided with anti-slip texture, and the anti-slip texture is perpendicular to the length direction of the steel strip.

[0016] The beneficial effects of this invention are as follows: This invention provides a gear set metal cutting processing device. By using a bonding mechanism to tightly bond the sealing cover to the top of the gear blank, a relatively sealed environment is formed in the processing area, preventing the working fluid from diverting and spreading. In conjunction with the water pump and negative pressure fan on the side of the circulating filter chamber, the working fluid is directionally delivered into the sealing cover through the drain pipe. On the other hand, the negative pressure fan forms a directional airflow in the upper pipe, forcibly accelerating the penetration speed of the working fluid along the cutting path into the narrow processing gap. This ensures that the working fluid accurately covers the core discharge area. This design can not only quickly remove the metal debris generated by electro-erosion and solve the problem of secondary discharge caused by debris retention in the gap, but also efficiently dissipate heat from the discharge area, avoiding the electrode wire burnout caused by local high temperature.

[0017] The device uses a bonding mechanism to tightly bond the receiving cover to the bottom of the gear blank. Combined with the negative pressure suction design of the lower pipe and the air inlet pipe, it directionally guides and recovers the working fluid flowing down the cutting path, completely eliminating the phenomenon of working fluid splashing outward and ensuring that the equipment workbench and surrounding environment are dry and clean. At the same time, the working fluid is directly introduced into the circulating filter chamber through the receiving cover and the DC pipe, without the need for an additional collection process. With the purification treatment of the filter element and demister in the chamber, the working fluid can be recycled in a closed loop, making it more practical.

[0018] By setting a fixing mechanism at the end of the machine base, consisting of a fixed plate, a first guide groove, a first slider, a bidirectional screw, an adjusting wheel, a clamping plate, a V-groove, a limiting groove, a steel belt, a control cavity, a second guide groove, a second slider, a tension spring, and an extrusion roller, bidirectional centering extrusion and limiting are achieved through the V-groove on the clamping plate. The steel belt fits against the outer circumference of the gear blank, greatly increasing the contact area and achieving rotational limiting and stable clamping of the blank. The tension spring and extrusion roller in the control cavity can adapt to changes in the outer diameter of the blank, always maintaining the tension of the steel belt, effectively preventing the blank from shifting or shaking during processing. Attached Figure Description

[0019] Figure 1 This is the front view of the present invention; Figure 2 This is a partial structural diagram of the wireframes of the present invention; Figure 3 This is a diagram showing the external structure of the sliding sleeve and vertical rod of the present invention; Figure 4 This is a cross-sectional view of the upper conduit and sealing cover of the present invention; Figure 5 This is a cross-sectional view of the lower tube and receiving cover of the present invention; Figure 6 This is a cross-sectional view of the internal circulation filter chamber of the present invention; Figure 7 This is a diagram of the fixing mechanism of the present invention; Figure 8 This is a cross-sectional view of the internal structure of the clamping plate of the present invention; Figure 9 This is a diagram showing the connection between the extrusion roller and the steel strip of the present invention.

[0020] In the diagram: 1. Machine base; 101. Slide table; 102. Wire EDM main unit; 103. Wire frame; 2. Upper conduit; 3. Sealing cover; 4. Lower conduit; 5. Receiving cover; 6. Fitting mechanism; 601. Vertical rod; 602. Sliding sleeve; 603. Compression spring; 604. Fixing rod; 605. Positioning bolt; 7. Circulating filter chamber; 701. Mounting plate; 702. Filter element; 703. Demister; 8. Water pump; 9. Drain pipe; 10. Negative pressure fan; 11. Exhaust pipe; 12. Direct current pipe; 13. Air inlet pipe; 14. Fixing mechanism; 1401. Fixing plate; 1402. First guide groove; 1403. First slider; 1404. Bidirectional screw; 1405. Adjusting wheel; 1406. Clamping plate; 1407. V-groove; 1408. Limiting groove; 1409. Steel strip; 1410. Control cavity; 1411. Second guide groove; 1412. Second slider; 1413. Tensioning spring; 1414. Squeeze roller. Detailed Implementation

[0021] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0022] Example 1 like Figures 1-9As shown, this embodiment provides a gear set metal cutting processing device, including a base 1, a slide table 101 located at the end of the base 1, a wire cutting host 102 installed on the top of the slide table 101, and wire frames 103 symmetrically installed on the sides of the wire cutting host 102. An upper wire tube 2 is fixedly installed between the opposite ends of the two sets of wire frames 103. A sealing cover 3 is fixedly connected to the bottom end of the upper wire tube 2. A lower wire tube 4 is correspondingly arranged directly below the sealing cover 3. A receiving cover 5 is fixedly sleeved on the outside of the lower wire tube 4. The electrode wire of the wire cutting host 102 passes through the interior of the upper wire tube 2 and the sealing cover 3 in sequence and exits from the interior of the lower wire tube 4. A bonding mechanism 6 is provided between the two sets of wire frames 103. The bonding mechanism 6 drives the sealing cover 3 and the receiving cover 5 to fit tightly against the top and bottom of the gear blank, respectively. The base 1 has a circulating filter chamber 7 inside, and a water pump 8 is installed on the side of the circulating filter chamber 7. The input end of the water pump 8 is connected to the inside of the circulating filter chamber 7, and the output end of the water pump 8 is connected to the inside of the sealing cover 3 by a drain pipe 9. A negative pressure fan 10 is fixedly installed on the top of the circulating filter chamber 7. An exhaust pipe 11 is connected between the output end of the negative pressure fan 10 and the interior of the upper pipe 2, which is used to form a directional airflow in the upper pipe 2 to accelerate the penetration of the working fluid into the processing gap. A DC pipe 12 is connected between the receiving cover 5 and the interior of the circulating filter chamber 7, and an air inlet pipe 13 is connected between the lower pipe 4 and the interior of the circulating filter chamber 7, which is used to recover the processed working fluid under negative pressure and introduce it into the circulating filter chamber 7. A fixing mechanism 14 is provided at the top of the machine base 1 away from the wire EDM host 102, which is used to position and clamp the gear blank.

[0023] The gear blank to be processed is placed on the top of the machine base 1 at the position corresponding to the fixing mechanism 14. The fixing mechanism 14 positions and clamps the gear blank to ensure that the blank does not shift or shake during processing. Then, the bonding mechanism 6 drives the sealing cover 3 to fit tightly against the top of the gear blank and the receiving cover 5 to fit tightly against the bottom of the gear blank, forming a relatively sealed space in the processing area to prevent the working fluid from spreading over a large area. After the equipment is started, the wire cutting host 102 starts, and its electrode wire passes through the upper wire tube 2, the inside of the sealing cover 3, and out through the lower wire tube 4 to form a cutting circuit. At the same time, the water pump 8 on the side of the circulating filter chamber 7 starts, drawing the purified working fluid from the circulating filter chamber 7 and directionally transporting it to the sealing cover 3 through the drain pipe 9. The negative pressure fan 10 at the top of the circulating filter chamber 7 starts synchronously, and directional airflow is delivered to the upper wire tube 2 through the exhaust pipe 11. The directional airflow forcibly accelerates the working fluid in the sealing cover 3 to penetrate into the narrow processing gap along the electrode wire direction, ensuring that the working fluid accurately covers the core discharge area. The electrode wire and gear blank are eroded by high-frequency electrical pulse discharge. The working fluid quickly carries away the metal debris generated by the electrical erosion, preventing debris from accumulating in the gap and causing secondary discharge. At the same time, it efficiently dissipates the heat in the discharge area, preventing the electrode wire from vibrating or burning due to local high temperature. The processed working fluid flows downward along the processing gap. Most of the working fluid is received by the receiving hood 5 and then enters the circulating filter chamber 7 through the DC pipe 12. A small portion of the working fluid flowing down along the electrode wire is quickly sucked into the circulating filter chamber 7 through the negative pressure recovery channel formed by the air inlet pipe 13, preventing the working fluid from splashing. The working fluid entering the circulating filter chamber 7 is purified and regenerated after being separated by the demister 703 and filtered by the filter element 702. This continuously provides water to the water pump 8, forming a closed-loop circulation of the working fluid. During the processing, the position of the wire cutting host 102 can be adjusted by the slide table 101 to complete the precise cutting of the gear teeth in conjunction with the movement of the electrode wire.

[0024] Example 2 The solution in Example 1 will be further described below with reference to its specific working method. In this embodiment, the bonding mechanism 6 includes a vertical rod 601, a sliding sleeve 602, a compression spring 603, and a fixing rod 604; The vertical rod 601 is fixedly installed between the two sets of wire frames 103. The sliding sleeve 602 is symmetrically slidably sleeved at both ends of the vertical rod 601. The compression spring 603 is symmetrically sleeved at both ends of the vertical rod 601, and the two ends of the compression spring 603 respectively abut against the sliding sleeve 602 and the wire frame 103. The sides of the sliding sleeve 602 are fixed with fixing rods 604. The two sets of fixing rods 604 are fixedly connected to the upper wire tube 2 and the lower wire tube 4 respectively.

[0025] The core function of the bonding mechanism 6 is to drive the sealing cover 3 and the receiving cover 5 to tightly bond to the top and bottom of the gear blank, respectively, to create a relatively sealed processing space, providing a basis for the precise supply and recovery of working fluid. The vertical rod 601 is fixedly installed between the two sets of wire frames 103, serving as a guide reference for the sliding sleeve 602. The compression springs 603, symmetrically sleeved at both ends of the vertical rod 601, are always in a pre-compressed state, continuously applying a thrust towards the gear blank to the sliding sleeve 602 by means of their own elastic force. Under the action of this thrust, the sliding sleeve 602 slides along the vertical rod 601 towards the gear blank, while the fixing rod 604 fixed on the side of the sliding sleeve 602 moves synchronously with the sliding sleeve 602. The two sets of fixing rods 604 are fixedly connected to the upper wire tube 2 and the lower wire tube 4, respectively, thereby driving the sealing cover 3 at the bottom of the upper wire tube 2 to move towards the top of the gear blank and the receiving cover 5 on the outside of the lower wire tube 4 to move towards the bottom of the gear blank, ultimately achieving a tight bond between the sealing cover 3, the receiving cover 5, and the gear blank, completing the relative sealing of the processing area.

[0026] In this embodiment, positioning bolts 605 are threadedly installed on the outer side of the sliding sleeve 602, and the positioning bolts 605 extend to the inner side of the sliding sleeve 602 and contact the side of the vertical rod 601.

[0027] The positioning bolt 605 is used to fix the position of the sliding sleeve 602 during the gear blank installation and electrode wire insertion stages, preventing the bonding mechanism 6 from prematurely driving the sealing cover 3 and receiving cover 5 to bond, which would affect the operation process. Before placing the gear blank, the positioning bolt 605 is rotated so that its end abuts against the side of the vertical rod 601, locking the position of the sliding sleeve 602 on the vertical rod 601 through friction. At this time, the compression spring 603 remains compressed. After the gear blank is fixed by the fixing mechanism 14 and the electrode wire is inserted into the upper tube 2, sealing cover 3, and lower tube 4, the positioning bolt 605 is rotated in the opposite direction so that its end is disengaged from the vertical rod 601, releasing the lock on the sliding sleeve 602. The compression spring 603 releases its elastic force, pushing the sliding sleeve 602 to drive the sealing cover 3 and receiving cover 5 to complete the bonding action. After processing, the positioning bolt 605 can be tightened again to fix the sliding sleeve 602, making it easy to remove the processed gear product.

[0028] In this embodiment, an installation plate 701 is horizontally installed inside the circulating filter chamber 7, and a filter element 702 is detachably installed on the installation plate 701. A demister 703 is provided at the top inside the circulating filter chamber 7, and the DC pipe 12 and the air inlet pipe 13 both extend to the bottom of the demister 703.

[0029] The processed working fluid is transported to the circulating filter chamber 7 through the DC pipe 12 and the air inlet pipe 13. The output ends of the DC pipe 12 and the air inlet pipe 13 extend to the bottom of the demister 703. The demister 703 quickly separates the mist entrained in the working fluid, preventing the mist from diffusing and being directly discharged to the outside by the negative pressure fan 10. The working fluid falls naturally onto the mounting plate 701, which provides stable support for the filter element 702. The filter element 702 is designed to be detachable for easy cleaning or replacement. When the working fluid flows through the filter element 702, the filter element 702 intercepts metal debris, processing impurities, etc., to achieve purification and regeneration of the working fluid. The purified working fluid is stored at the bottom of the circulating filter chamber 7 to provide a clean water source for the water pump 8, ensuring a closed-loop circulation supply of the working fluid.

[0030] In this embodiment, sealing rings are provided at the bottom of the sealing cover 3 and the top of the receiving cover 5. The top of the lower tube 4 is conical and is lower than the top horizontal plane of the receiving cover 5.

[0031] When the sealing cover 3 and the receiving cover 5 are respectively attached to the top and bottom of the gear blank, the sealing ring will be squeezed and deformed, filling the tiny gap between the contact surfaces, greatly improving the sealing performance of the processing area, effectively preventing the working fluid from leaking from the contact point, avoiding waste of working fluid and equipment contamination; the top of the lower pipe 4 is designed to be conical, and the top is lower than the top horizontal plane of the receiving cover 5, which can prevent the working fluid in the receiving cover 5 from excessively flowing into the lower pipe 4, ensuring that the receiving cover 5 effectively collects most of the falling working fluid.

[0032] In this embodiment, the fixing mechanism 14 includes a fixing plate 1401, a clamping plate 1406, a V-groove 1407, a limiting groove 1408, a steel strip 1409, a spacing adjustment assembly, and a tensioning assembly. The fixing plate 1401 is vertically fixed to the end of the machine base 1. The fixing plate 1401 is symmetrically provided with clamping plates 1406 on its inner side. The fixing plate 1401 is provided with a spacing adjustment component for adjusting the position of the two sets of clamping plates 1406. The inner side of each clamping plate 1406 is provided with a V-shaped groove 1407. The inner side of each V-shaped groove 1407 is provided with a limiting groove 1408. A steel strip 1409 is provided between the two ends of the limiting groove 1408. The inside of each clamping plate 1406 is provided with a tensioning component to fit the steel strip 1409 with the blank.

[0033] The fixing plate 1401 is vertically fixed to the end of the machine base 1, providing an installation base for the entire fixing mechanism 14. The clamping plates 1406, symmetrically arranged on the inner side of the fixing plate 1401, have their relative positions adjusted by a spacing adjustment component to accommodate circular gear blanks of different sizes. The V-shaped grooves 1407 on the inner side of the clamping plates 1406 utilize centering properties; when the clamping plates 1406 approach the blank, the two side walls of the V-shaped grooves 1407 contact the outer circumferential surface of the blank, automatically calibrating the center position of the blank and achieving precise positioning. The limiting groove 1408 inside the groove 1407 provides installation space for the steel strip 1409. The two ends of the steel strip 1409 are connected and wrapped around the limiting groove 1408. It works with the tensioning component to keep it in close contact with the outer circumference of the billet. The tensioning component automatically adapts to the change of the outer diameter of the billet and always keeps the steel strip 1409 in a taut state. Through the bidirectional extrusion limiting of the V-groove 1407 and the wrapping and clamping of the steel strip 1409, the contact area with the billet is greatly increased, realizing the rotation limiting and stable fixation of the billet.

[0034] In this embodiment, the spacing adjustment assembly includes a first guide groove 1402, a first slider 1403, and a bidirectional screw 1404; The first guide groove 1402 is opened on the inner side of the fixed plate 1401 parallel to the width direction of the base 1. The first slider 1403 is slidably arranged at both ends of the first guide groove 1402. Two sets of clamping plates 1406 are respectively fixed on the first slider 1403. A bidirectional screw 1404 is rotatably installed between the two ends of the first guide groove 1402. The two ends of the bidirectional screw 1404 are threadedly connected to the first slider 1403.

[0035] When adjusting the distance between the two sets of clamping plates 1406, the bidirectional screw 1404 is controlled to rotate within the first guide groove 1402 inside the fixed plate 1401. Since the threads at both ends of the bidirectional screw 1404 turn in opposite directions and are respectively threadedly connected to the first sliders 1403 at both ends inside the first guide groove 1402, under the action of the threads, the two sets of first sliders 1403 slide synchronously towards each other along the first guide groove 1402, while the two sets of clamping plates 1406 are respectively fixed on the two sets of first sliders 1403, and move synchronously with the first sliders 1403, gradually approaching the gear blank.

[0036] In this embodiment, one end of the bidirectional screw 1404 extends to the side of the fixing plate 1401, and an adjusting wheel 1405 is fixed to the end of the bidirectional screw 1404 located outside the fixing plate 1401, and a hand crank is provided on the outer side of the adjusting wheel 1405.

[0037] By leveraging the hand crank, the force required to rotate the bidirectional screw 1404 can be reduced, allowing operators to more easily adjust the spacing of the clamps 1406 and improving operational convenience.

[0038] In this embodiment, the tensioning assembly includes a control cavity 1410, a second guide groove 1411, a second slider 1412, a tensioning spring 1413, and a compression roller 1414; The two ends of the steel strip 1409 are connected end to end. The control cavity 1410 is opened inside the clamping plate 1406. The two ends of the inner side of the control cavity 1410 are provided with second guide grooves 1411. The second slider 1412 is slidably arranged inside the second guide groove 1411. A tension spring 1413 is provided between the side of the second slider 1412 near the V-shaped groove 1407 and the inner end of the second guide groove 1411. A squeeze roller 1414 that is in contact with the inner side of the steel strip 1409 is rotatably mounted on the second slider 1412.

[0039] When the clamping plate 1406 approaches the billet, the billet squeezes the steel strip 1409 to expand outward. The steel strip 1409 pushes the extrusion roller 1414, which in turn drives the second slider 1412 to move along the second guide groove 1411 toward the V-groove 1407, compressing the tension spring 1413. The reaction force of the tension spring 1413 is transmitted to the extrusion roller 1414 through the second slider 1412. The extrusion roller 1414 continuously pushes the steel strip 1409, so that the steel strip 1409 is always tightly attached to the outer circumference of the billet. Even if there is a slight deviation in the outer diameter of the billet, it can be adaptively adjusted by the elastic deformation of the tension spring 1413 to maintain clamping stability.

[0040] In this embodiment, the outer side of the steel strip 1409 is uniformly provided with anti-slip textures, and the anti-slip textures are perpendicular to the length direction of the steel strip 1409.

[0041] When the steel strip 1409 adheres to the billet under the action of the tensioning component, the anti-slip texture is embedded in the tiny bumps and depressions on the surface of the billet, forming a mechanical interlocking effect, which effectively prevents relative slippage between the billet and the steel strip 1409 during processing.

[0042] Example 3 The solutions in Embodiment 1 and Embodiment 2 will be further described below with reference to their specific working methods. Before processing, the gear blank to be processed is hoisted to the area corresponding to the fixing mechanism 14 at the top of the machine base 1. The operator rotates the hand crank on the outside of the adjusting wheel 1405, which drives the bidirectional screw 1404 to rotate in the first guide groove 1402. The two sets of first sliders 1403 slide towards each other along the first guide groove 1402, thereby pushing the two sets of clamping plates 1406 closer to the blank until the V-shaped groove 1407 on the inner side of the clamping plate 1406 contacts the two sides of the blank, completing the initial positioning. During the initial fixing, the tension spring 1413 in the control cavity 1410 is compressed, which pushes the second slider 1412 to move along the second guide groove 1411. The extrusion roller 1414 pushes the steel strip 1409, so that the steel strip 1409 tightly wraps the outer circumference of the blank. The anti-slip texture on the outside of the steel strip 1409 increases the friction, realizing the all-round stable clamping of the blank.

[0043] Subsequently, the positioning bolts 605 on the outside of the sliding sleeve 602 are loosened, and the compression springs 603 at both ends of the vertical rod 601 release their elastic force, pushing the two sets of sliding sleeves 602 to slide up and down along the vertical rod 601 towards the blank. The sliding sleeves 602 drive the upper tube 2 and the lower tube 4 to move synchronously through the fixing rod 604, so that the sealing cover 3 at the bottom of the upper tube 2 fits with the top of the blank, and the receiving cover 5 on the outside of the lower tube 4 fits with the bottom of the blank, forming a relatively sealed processing area.

[0044] After the electrode wire is threaded, the equipment is started. The wire EDM host 102 starts, and the electrode wire maintains a stable tension under the guidance of the upper wire tube 2 and the lower wire tube 4, generating a high-frequency electrical pulse discharge between the electrode wire and the workpiece to remove the metal. At the same time, the water pump 8 on the side of the circulating filter chamber 7 starts, drawing the purified working fluid from the chamber and delivering it to the sealing cover 3 through the drain pipe 9. The negative pressure fan 10 at the top of the circulating filter chamber 7 starts synchronously, delivering directional airflow to the upper wire tube 2 through the exhaust pipe 11, forcing the working fluid to penetrate along the electrode wire into the narrow processing gap, quickly removing the metal debris and heat generated by the discharge, and avoiding secondary discharge and electrode wire burnout.

[0045] The processed working fluid, carrying debris, flows down along the processing gap. Most of the working fluid is received by the receiving hood 5 and then enters the circulating filter chamber 7 through the DC pipe 12. A small portion of the working fluid flowing down along the electrode wire is quickly sucked into the circulating filter chamber 7 through the negative pressure recovery channel formed by the air inlet pipe 13, preventing the working fluid from splashing. The working fluid flows through the filter element 702 on the mounting plate 701 to filter debris. The purified working fluid is stored at the bottom of the chamber to continuously supply water to the water pump 8, forming a closed-loop circulation.

[0046] During the processing, the position of the wire cutting host 102 can be adjusted by the slide table 101, and the precise cutting of the gear teeth can be completed in conjunction with the movement of the electrode wire. After processing, the processed gear is removed, the debris on the filter element 702 is cleaned, and the next batch of blanks can be processed.

[0047] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A gear set metal cutting processing device, comprising a base (1), a slide (101) located at the end of the base (1), a wire cutting host (102) mounted on the top of the slide (101), and wire frames (103) symmetrically mounted on the sides of the wire cutting host (102). Its features are: An upper wire tube (2) is fixedly installed between the opposite ends of the two sets of wire frames (103). A sealing cover (3) is fixedly connected to the bottom end of the upper wire tube (2). A lower wire tube (4) is provided directly below the sealing cover (3). A receiving cover (5) is fixedly sleeved on the outside of the lower wire tube (4). The electrode wire of the wire cutting host (102) passes through the interior of the upper wire tube (2) and the sealing cover (3) in sequence and exits from the interior of the lower wire tube (4). A bonding mechanism (6) is provided between the two sets of wire frames (103). The bonding mechanism (6) drives the sealing cover (3) and the receiving cover (5) to fit tightly with the top and bottom of the gear blank, respectively. The machine base (1) is equipped with a circulating filter chamber (7), and a water pump (8) is provided on the side of the circulating filter chamber (7). The input end of the water pump (8) is connected to the inside of the circulating filter chamber (7), and the output end of the water pump (8) is connected to the inside of the sealing cover (3) by a drain pipe (9). A negative pressure fan (10) is fixedly installed on the top of the circulating filter chamber (7). An exhaust pipe (11) is connected between the output end of the negative pressure fan (10) and the interior of the upper pipe (2) to form a directional airflow in the upper pipe (2) to accelerate the penetration of the working fluid into the processing gap. A DC pipe (12) is connected between the inside of the receiving cover (5) and the inside of the circulating filter chamber (7), and an air inlet pipe (13) is connected between the lower pipe (4) and the inside of the circulating filter chamber (7) for negative pressure recovery of the processed working fluid and introduction into the circulating filter chamber (7). A fixing mechanism (14) is provided at the top of the machine base (1) away from the wire EDM host (102) for positioning and clamping the gear blank.

2. The gear set metal cutting and processing device according to claim 1, characterized in that: The bonding mechanism (6) includes a vertical rod (601), a sliding sleeve (602), a compression spring (603), and a fixing rod (604). The vertical rod (601) is fixedly installed between the two sets of wire frames (103). The sliding sleeve (602) is symmetrically slidably sleeved at both ends of the vertical rod (601). The compression spring (603) is symmetrically sleeved at both ends of the vertical rod (601), and the two ends of the compression spring (603) abut against the sliding sleeve (602) and the wire frame (103) respectively. The sides of the sliding sleeve (602) are fixed with fixing rods (604). The two sets of fixing rods (604) are fixedly connected to the upper wire tube (2) and the lower wire tube (4) respectively.

3. The gear set metal cutting and processing device according to claim 2, characterized in that: The outer side of the sliding sleeve (602) is threaded with positioning bolts (605), and the positioning bolts (605) extend to the inner side of the sliding sleeve (602) and contact the side of the vertical rod (601).

4. The gear set metal cutting and processing device according to claim 1, characterized in that: An installation plate (701) is horizontally installed inside the circulating filter chamber (7). A filter element (702) is detachably installed on the installation plate (701). A demister (703) is provided at the top inside the circulating filter chamber (7). The direct current pipe (12) and the air inlet pipe (13) both extend to the bottom of the demister (703).

5. The gear set metal cutting and processing device according to claim 1, characterized in that: The bottom of the sealing cover (3) and the top of the receiving cover (5) are both provided with sealing rings. The top of the lower tube (4) is conical and the top of the lower tube (4) is lower than the top horizontal plane of the receiving cover (5).

6. The gear set metal cutting and processing device according to claim 1, characterized in that: The fixing mechanism (14) includes a fixing plate (1401), a clamping plate (1406), a V-groove (1407), a limiting groove (1408), a steel strip (1409), a spacing adjustment assembly, and a tensioning assembly; The fixing plate (1401) is vertically fixed to the end of the machine base (1). The fixing plate (1401) is symmetrically provided with clamping plates (1406) on its inner side. The fixing plate (1401) is provided with a spacing adjustment component for adjusting the position of the two sets of clamping plates (1406). The inner side of each clamping plate (1406) is provided with a V-shaped groove (1407). The inner side of each V-shaped groove (1407) is provided with a limiting groove (1408). A steel strip (1409) is provided between the two ends of the limiting groove (1408). The inside of each clamping plate (1406) is provided with a tensioning component to fit the steel strip (1409) with the blank.

7. A gear set metal cutting and processing device according to claim 6, characterized in that: The spacing adjustment assembly includes a first guide groove (1402), a first slider (1403), and a bidirectional screw (1404). The first guide groove (1402) is opened on the inner side of the fixed plate (1401) in the width direction parallel to the base (1). The first slider (1403) is slidably arranged at both ends of the first guide groove (1402). Two sets of clamping plates (1406) are respectively fixed on the first slider (1403). A bidirectional screw (1404) is rotatably installed between the two ends of the first guide groove (1402). The two ends of the bidirectional screw (1404) are threadedly connected to the first slider (1403).

8. The gear set metal cutting and processing device according to claim 7, characterized in that: One end of the double-ended screw (1404) extends to the side of the fixed plate (1401). An adjusting wheel (1405) is fixed to the end of the double-ended screw (1404) located outside the fixed plate (1401), and a hand crank is provided on the outside of the adjusting wheel (1405).

9. A gear set metal cutting and processing device according to claim 6, characterized in that: The tensioning assembly includes a control chamber (1410), a second guide groove (1411), a second slider (1412), a tensioning spring (1413), and a pressure roller (1414). The two ends of the steel strip (1409) are connected end to end. The control cavity (1410) is opened inside the clamping plate (1406). The two ends of the inner side of the control cavity (1410) are provided with second guide grooves (1411). The second slider (1412) is slidably arranged inside the second guide groove (1411). The side of the second slider (1412) near the V-shaped groove (1407) is provided with a tension spring (1413) between it and the inner end of the second guide groove (1411). The extrusion roller (1414) that is in contact with the inner side of the steel strip (1409) is rotatably mounted on the second slider (1412).

10. A gear set metal cutting and processing device according to claim 6, characterized in that: The outer side of the steel strip (1409) is uniformly provided with anti-slip texture, and the anti-slip texture is perpendicular to the length direction of the steel strip (1409).

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