A wire sawing apparatus

Abstract

This utility model relates to the field of mechanical processing and manufacturing technology. It provides a wire cutting device, including a frame and a housing for fixing the target part. The frame contains a support frame and a translation mechanism for driving the horizontal movement of the housing. The support frame has a wire feeding mechanism for adjusting the vertical angle of the molybdenum wire. The translation mechanism within the frame enables the horizontal movement of the housing. The wire feeding mechanism on the support frame, through upper and lower adjustable guide rails and combinations of movable and fixed pulleys on the upper and lower adjustable guide rails, forms an adjustable vertical angle cyclic cutting path for the molybdenum wire, achieving large-angle cutting. A spherical grinding nozzle, in conjunction with the spherical surface of the adjusting guide rail, enables omnidirectional rotation, adapting to the molybdenum wire angle, reducing wire friction, lowering the risk of wire breakage, and extending the wire's service life. A laser probe detects the position of the target part, and the translation mechanism and rotary motor adjust the position, achieving intelligent adjustment and improving processing efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing and manufacturing technology, and more specifically, to a wire cutting device. Background Technology

[0002] In the field of mechanical processing and manufacturing, wire EDM equipment is an indispensable and crucial piece of equipment, whose performance significantly impacts the quality of parts processing and production efficiency. With the maturation of industrial systems, mechanical structure designs are becoming increasingly complex, and the difficulty of parts processing is constantly rising. Inclined wire EDM has become the norm, and the demand for processing small-sized parts is also increasing. However, existing wire EDM equipment is mainly semi-automatic, and manual alignment and straightening operations can affect the processing accuracy of parts. When processing large inclination angles, as the inclination angle of the molybdenum wire increases, the wear of the molybdenum wire by the grinding nozzle intensifies, leading to a sharp reduction in the lifespan of the molybdenum wire and increasing processing costs. When processing small-sized parts, the surface quality is easily damaged when the part falls onto the worktable after cutting, and the part's own weight can significantly reduce the accuracy in the latter half of the wire EDM process. Currently, the method of manually holding the part by hand at the end of the cutting process to reduce the impact of its own weight poses safety hazards such as electric shock, seriously threatening the lives of workers. Utility Model Content

[0003] The purpose of this invention is to provide a wire cutting device that solves the problems of low processing accuracy and efficiency, easy wear of molybdenum wire, and safety hazards in existing wire cutting devices.

[0004] This utility model is achieved through the following technical solution: A wire cutting device includes a frame and a box for fixing the target part. A support frame and a translation mechanism for driving the box to move horizontally are provided inside the frame. A wire feeding mechanism for adjusting the vertical angle of the molybdenum wire is provided on the support frame. The wire feeding mechanism includes a drive shaft and adjustment guides respectively arranged at the upper and lower ends of the drive shaft. A linear actuator is provided in the adjustment guide. The output shaft of the linear actuator is rotatably connected to a movable pulley that slides along the adjustment guide. A fixed pulley is rotatably connected to the end of the adjustment guide away from the movable pulley. The molybdenum wire is driven by the drive shaft to pass through the fixed pulley and movable pulley of the upper adjustment guide in sequence, and the movable pulley and fixed pulley of the lower adjustment guide to form a constant tension cyclic cutting path. A spherical groove is provided at one end of the movable pulley of the adjustment guide. A spherical grinding nozzle for adapting the angle of the molybdenum wire is fitted in the spherical groove.

[0005] Furthermore, a rotary motor is installed inside the box, and the rotary motor is coaxially connected to a carrier plate for placing the target part. A pressure block for clamping and limiting the target part is connected to the carrier plate.

[0006] Furthermore, the carrier includes an outer wheel, an inner wheel, and a first auxiliary support plate. The top of the outer wheel has an arc-shaped slot for bolting the first auxiliary support plate. The first auxiliary support plate has a first slot for bolting the pressure block. The inner wheel is arranged below the target part to support the target part in the center.

[0007] Furthermore, slide rails are provided on the two oppositely arranged ends of the box body, and a second auxiliary support plate for supporting the two ends of the target part is slidably connected in the slide rails. The support plate has a second hole for bolting the pressure block.

[0008] Furthermore, the adjusting guide rail consists of two adjusting plates, with an elastic element limiting one end of the movable pulley between the adjusting plates, and an electromagnet for clamping and locking the spherical grinding nozzle is provided on the adjusting plate.

[0009] Furthermore, the adjusting plate includes a mounting block detachably connected to its end, the mounting block being used to connect the ball-shaped grinding nozzle, the elastic element, and the electromagnet.

[0010] Furthermore, the translation mechanism includes a transverse translation component and a longitudinal translation component. The transverse translation component includes a transverse guide rail and a transverse translation motor, and the longitudinal translation component includes a longitudinal translation frame and a longitudinal translation motor. The longitudinal translation frame is laterally slidably connected to the transverse guide rail, and the box body is longitudinally slidably connected to the longitudinal translation frame. The transverse translation motor is connected to a first lead screw threadedly connected to the longitudinal translation frame via a coupling, and the longitudinal translation motor is connected to a second lead screw threadedly connected to the box body via a coupling.

[0011] Furthermore, a hydraulic lifting frame is installed inside the frame, and a mounting platform for positioning and installing the laser probe is connected to the hydraulic lifting frame. The height of the laser probe is adjusted by the hydraulic lifting frame to detect the relative position of the target part and the frame.

[0012] Furthermore, auxiliary clamps are connected to the support frame via shaped flexible tubing.

[0013] Furthermore, auxiliary lighting is connected to the support frame via a shaped flexible tube.

[0014] This utility model has at least the following advantages and beneficial effects:

[0015] (1) The horizontal movement of the box is achieved by the translation mechanism set in the frame. The wire feeding mechanism on the support frame forms an adjustable vertical angle cyclic cutting path for the molybdenum wire through the upper and lower end adjustment guide rails and the combination of movable pulleys and fixed pulleys set in the upper and lower end adjustment guide rails respectively, so as to achieve large tilt angle cutting and meet the tilt cutting requirements of complex parts.

[0016] (2) By cooperating with the spherical surface of the adjusting guide rail, the spherical grinding nozzle can achieve universal rotation. When the inclination angle of the molybdenum wire changes, the spherical grinding nozzle will automatically rotate along the groove of the spherical surface to adapt to the angle of the molybdenum wire, reduce the friction of the molybdenum wire, reduce the risk of molybdenum wire breakage, and improve the service life of the molybdenum wire.

[0017] (3) The position of the target part is detected by a laser probe, and the position is adjusted by a translation mechanism and a rotary motor to achieve intelligent adjustment, which effectively improves the processing accuracy and efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a wire cutting device provided by this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of a wire cutting device provided by this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the box body in a wire cutting device provided by this utility model.

[0021] Figure 4 This utility model provides a schematic diagram of the connection structure between the support frame and the wire feeding mechanism in a wire cutting device.

[0022] Figure 5 This is a schematic diagram of the wire feeding mechanism in a wire EDM device provided by this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the adjusting plate in a wire cutting device provided by this utility model.

[0024] Figure 7 This is a schematic diagram of the support frame in a wire cutting device provided by this utility model.

[0025] Figure 8 This is a schematic diagram of the structure of a hydraulic lifting frame in a wire cutting device provided by this utility model.

[0026] Reference numerals: 1-Frame, 2-Box, 20-Rotary motor, 21-Slide rail, 22-Second auxiliary support plate, 220-Second hole, 3-Support frame, 31-Auxiliary clamp, 32-Auxiliary lighting, 4-Translation mechanism, 41-Transverse guide rail, 42-Transverse motor, 43-Longitudinal frame, 44-First lead screw, 45-Second lead screw, 5-Wire feeding mechanism, 51-Drive shaft, 52-Adjusting guide rail, 520-Spherical groove, 53-Linear driver, 54-Moving pulley, 55-Fixed pulley, 56-Spherical grinding nozzle, 57-Adjusting plate, 571-Mounting block, 58-Elastic element, 59-Electromagnet, 6-Carrier plate, 60-Pressure block, 61-Outer wheel, 62-Inner wheel, 63-First auxiliary support plate, 630-First hole, 7-Hydraulic lifting frame, 71-Mounting platform, 72-Laser probe. Detailed Implementation

[0027] The specific implementation method is described below with reference to the accompanying drawings.

[0028] Example

[0029] like Figures 1 to 8 As shown, this embodiment mainly discloses a wire cutting device, including a frame 1 and a housing 2 for fixing the target part. A support frame 3 and a translation mechanism 4 for driving the housing 2 to move horizontally are provided inside the frame 1. A wire feeding mechanism 5 for adjusting the vertical angle of the molybdenum wire is provided on the support frame 3. The wire feeding mechanism 5 includes a drive shaft 51 and adjusting guide rails 52 respectively arranged at the upper and lower ends of the drive shaft 51. A linear actuator 53 is provided inside the adjusting guide rails 52. The output shaft of the linear actuator 53 is rotatably connected to an adjusting guide rail. The adjustable guide rail 52 has a sliding pulley 54, and a fixed pulley 55 is rotatably connected to the end of the adjustable guide rail 52 away from the sliding pulley 54. A molybdenum wire is driven by the drive shaft 51 to sequentially pass over the fixed pulley 55 and the sliding pulley 54 of the upper adjustable guide rail 52, and the sliding pulley 54 and the fixed pulley 55 of the lower adjustable guide rail 52, forming a constant tension cyclic cutting path. The adjustable guide rail 52 has a spherical groove 520 at one end of the sliding pulley 54, and a spherical grinding nozzle 56, through which the molybdenum wire is threaded, is fitted for adaptive angle adjustment. Specifically, the frame 1 is stably placed on a plane by support feet, and the box 2, as a carrier for mounting the target part, is stably set on the translation mechanism 4. The cyclic cutting path only contacts the target part and does not structurally interfere with the box 2. The linear actuator 53 can be an existing hydraulic cylinder, and the drive shaft 51 is driven by a motor built into the support frame 3. The translation mechanism 4 installed inside the frame 1 enables the horizontal movement of the box 2. The wire feeding mechanism 5 on the support frame 3, through the combination of the upper and lower adjusting guide rails 52 and the movable pulleys 54 and fixed pulleys 55 respectively installed on the upper and lower adjusting guide rails 52, tightens the molybdenum wire, forming an adjustable vertical angle cyclic cutting path. The target part to be cut is fixed on the box 2. The translation mechanism 4 drives the box 2 to position the part for cutting. The wire feeding mechanism 5 drives the movable pulleys 54 to slide through the linear actuator 53, changing the relative position of the upper and lower movable pulleys 54, so that the molybdenum wire tilts to form the required tilt angle. With the adaptive adjustment of the spherical groove 520 of the spherical grinding nozzle 56, a large tilt angle cutting can be achieved, which can meet the tilt cutting requirements of complex parts. The molybdenum wire circulation path is tension compensated by the movable pulleys 54 (the linear actuator 53 drives the shaft 51 with constant torque output), ensuring that the tension is constant during the cutting process and avoiding molybdenum wire breakage or rough cutting surface due to tension fluctuations. In addition, the spherical grinding nozzle 56 and the adjusting guide rail 52 are in spherical cooperation to achieve universal rotation. When the inclination angle of the molybdenum wire changes, the spherical grinding nozzle 56 automatically rotates along the spherical groove 520 to adapt to the angle of the molybdenum wire, reducing the friction of the molybdenum wire, reducing the risk of molybdenum wire breakage, and improving the service life of the molybdenum wire.

[0030] Furthermore, in specific implementation, such as Figure 3As shown, a rotary motor 20 is provided inside the box 2 provided in this embodiment of the utility model. The rotary motor 20 is coaxially rotatably connected to a carrier plate 6 for placing the target part. A clamping block 60 for clamping and limiting the target part is connected to the carrier plate 6. Specifically, the rotary motor 20 can realize the horizontal rotation of the target part. With the vertical tilt angle adjustment of the wire feeding mechanism 5, complex trajectory cutting in three-dimensional space can be achieved. The clamping surface of the clamping block 60 can be set as serrated or a rubber layer can be added to increase friction and prevent the part from slipping. The carrier plate 6 includes an outer wheel 61, an inner wheel 62, and a first auxiliary support plate 63. The top of the outer wheel 61 has an arc-shaped slot for bolting the first auxiliary support plate 63. The first auxiliary support plate 63 has a first slot 630 for bolting the clamping block 60. The inner wheel 62 is arranged below the target part to support the target part in the center. The first auxiliary support plate 63 and the clamping block 60 cooperate to clamp small-sized parts smaller than the size of the outer wheel 61 for wire cutting. Two first auxiliary support plates 63 are bolted through the first hole 630 and the arc-shaped hole, respectively, and fastened to the outer wheel 61. This allows the first auxiliary support plates 63 to support both ends of the target part. The pressure block 60 is bolted to the first auxiliary support plate 63, clamping the edge of the target part onto the first auxiliary support plate 63, thus securing the target part. The inner wheel 62 supports the center to prevent sagging and avoid stress deformation.

[0031] Furthermore, in specific implementation, such as Figure 3 As shown in the embodiment of this utility model, slide rails 21 are provided on the two oppositely arranged end faces of the box 2. Second auxiliary support plates 22 for supporting the two ends of the target part are slidably connected within the slide rails 21. The support plates have second holes 220 for bolting the pressure blocks 60. For large parts whose length exceeds the diameter of the carrier plate 6, the second auxiliary support plates 22 at both ends cooperate with the carrier plate 6 to form a three-point support, offsetting the bending moment during cutting and effectively improving the flexibility and adaptability of processing.

[0032] Furthermore, in specific implementation, such as Figures 4 to 6 As shown, the adjusting guide rail 52 provided in this embodiment of the present invention consists of two adjusting plates 57. An elastic element 58 is provided between the adjusting plates 57 at one end of the movable pulley 54, and an electromagnet 59 for clamping and locking the spherical grinding nozzle 56 is provided on the adjusting plates 57. Specifically, the elastic element 58 can be a spring. When the inclination angle of the molybdenum wire is adjusted, the elastic element 58 provides floating space for the spherical grinding nozzle 56 to adapt to the change in the angle of the molybdenum wire; when cutting, the electromagnet 59 is energized to generate magnetic force, pressing the spherical grinding nozzle 56 between the adjusting plates 57, eliminating the gap, and locking the spherical grinding nozzle 56. After cutting, the electromagnet 59 is de-energized and loses its magnetic force, and returns to its original position under the elastic restoring force of the elastic element.

[0033] Furthermore, in specific implementation, such as Figure 6 As shown, the adjusting plate 57 provided in this embodiment of the present invention includes a mounting block 571 detachably connected to its end. The mounting block 571 is used to connect the spherical grinding nozzle 56, the elastic element 58, and the electromagnet 59. Specifically, the easily worn part of the adjusting plate 57 is separated into a separate mounting block 571, which is connected to the adjusting plate 57 by bolts, making it detachable and easy to replace individually after wear. In addition, the separate mounting block 571 also facilitates the self-locking of the spherical grinding nozzle 56 by the electromagnet 59 and the elastic element 58.

[0034] Furthermore, in specific implementation, such as Figure 2 As shown, the translation mechanism 4 provided in this embodiment of the present invention includes a transverse translation component and a longitudinal translation component. The transverse translation component includes a transverse guide rail 41 and a transverse motor 42, and the longitudinal translation component includes a longitudinal frame 43 and a longitudinal motor. The longitudinal frame 43 is laterally slidably connected to the transverse guide rail 41, and the housing 2 is longitudinally slidably connected to the longitudinal frame 43. The transverse motor 42 is connected to a first lead screw 44 threadedly connected to the longitudinal frame 43 via a coupling, and the longitudinal motor is connected to a second lead screw 45 threadedly connected to the housing 2 via a coupling. Specifically, the translation mechanism 4 includes a transverse guide rail 41 (X-axis) and a longitudinal translation component (Y-axis). The transverse motor 42 drives the longitudinal frame 43 to move laterally via the first lead screw 44, and the longitudinal motor drives the housing 2 to move longitudinally via the second lead screw 45. The pitch of the first lead screw 44 and the second lead screw 45 can be 1mm, which, in conjunction with a stepper motor (step angle 1.8°), achieves micro-step control. The first lead screw 44 and the second lead screw 45 convert the rotational motion into linear motion, and the longitudinal frame 43 and the box 2 slide along the transverse guide rail 41 and the longitudinal guide rail respectively.

[0035] Furthermore, in specific implementation, such as Figure 8 As shown in the embodiment of this utility model, a hydraulic lifting frame 7 is provided inside the frame 1. A mounting platform 71 for positioning and installing a laser probe 72 is connected to the hydraulic lifting frame 7. The laser probe 72 adjusts its height via the hydraulic lifting frame 7 to detect the relative position of the target part and the frame 1. Specifically, the laser probe 72 emits a beam of light onto the surface of the part, receives the reflected light to calculate the distance, and the control system generates a compensation signal based on the distance difference, driving the translation mechanism 4 and / or the rotary motor 20 to adjust the position of the part, achieving automatic alignment.

[0036] Furthermore, in specific implementation, such as Figure 7As shown, an auxiliary clamp 31 is connected to the support frame 3 provided in this embodiment of the present invention via a shaping hose. The auxiliary clamp 31 is a pneumatic gripper, and the position of the gripper can be adjusted by bending the shaping hose. Specifically, before cutting small parts, the auxiliary clamp 31 is moved above the part, and the pneumatic system drives the gripper to close and hold the part. After cutting, it is released to prevent the part from falling and being damaged. An auxiliary lighting lamp 32 is connected to the support frame 3 via a shaping hose. The auxiliary lighting lamp 32 provides local strong light illumination to highlight the details of the part cutting area, making it easier for the operator to observe the cutting trajectory and surface quality. In addition, a control panel is also provided on the support frame 3. The control panel is connected to the translation mechanism 4, the rotary motor 20, the drive wheel motor, the linear actuator 53, the hydraulic lifting frame 7, the laser probe 72, and the auxiliary lighting lamp 32.

Claims

1. A wire cutting device, characterized in that, The device includes a frame (1) and a box (2) for fixing the target part. The frame (1) contains a support frame (3) and a translation mechanism (4) for driving the box (2) to move horizontally. The support frame (3) has a wire feeding mechanism (5) for adjusting the vertical angle of the molybdenum wire. The wire feeding mechanism (5) includes a drive shaft (51) and adjusting guide rails (52) respectively arranged at the upper and lower ends of the drive shaft (51). A linear actuator (53) is installed inside the adjusting guide rail (52). The output shaft of the linear actuator (53) is rotatably connected to a movable pulley (54) that slides along the adjusting guide rail (52). The adjusting guide rail (52) is rotatably connected to a fixed pulley (55) at the end away from the movable pulley (54). The molybdenum wire is driven by the drive shaft (51) to pass through the fixed pulley (55) and the movable pulley (54) of the upper adjusting guide rail (52) and the movable pulley (54) and the fixed pulley (55) of the lower adjusting guide rail (52) to form a constant tension cyclic cutting path. The adjusting guide rail (52) has a spherical groove (520) at one end of the movable pulley (54). A spherical grinding nozzle (56) for adapting the angle of the molybdenum wire is fitted in the spherical groove (520).

2. The wire cutting equipment according to claim 1, characterized in that, The box (2) is equipped with a rotary motor (20), which is coaxially connected to a carrier plate (6) for placing the target part. A clamping block (60) for clamping and limiting the target part is connected to the carrier plate (6).

3. The wire cutting equipment according to claim 2, characterized in that, The carrier plate (6) includes an outer wheel plate (61), an inner wheel plate (62), and a first auxiliary support plate (63). The top of the outer wheel plate (61) is provided with an arc-shaped slot for bolting the first auxiliary support plate (63). The first auxiliary support plate (63) is provided with a first slot (630) for bolting the pressure block (60). The inner wheel plate (62) is arranged below the target part to support the target part in the center.

4. The wire cutting equipment according to claim 2, characterized in that, The box body (2) is provided with slide rails (21) on its two oppositely arranged ends. A second auxiliary support plate (22) for supporting the two ends of the target part is slidably connected in the slide rail (21). The support plate has a second hole (220) for bolting the pressure block (60).

5. The wire cutting equipment according to claim 1, characterized in that, The adjusting guide rail (52) consists of two adjusting plates (57). An elastic element (58) is provided between the adjusting plates (57) at one end of the movable pulley (54), and an electromagnet (59) is provided on the adjusting plate (57) for clamping and locking the spherical grinding nozzle (56).

6. The wire cutting equipment according to claim 5, characterized in that, The adjusting plate (57) includes a mounting block (571) detachably connected to its end, the mounting block (571) being used to connect the spherical grinding nozzle (56), the elastic element (58), and the electromagnet (59).

7. The wire cutting equipment according to claim 1, characterized in that, The translation mechanism (4) includes a transverse component and a longitudinal component. The transverse component includes a transverse guide rail (41) and a transverse motor (42). The longitudinal component includes a longitudinal frame (43) and a longitudinal motor. The longitudinal frame (43) is slidably connected to the transverse guide rail (41) laterally. The box (2) is slidably connected to the longitudinal frame (43) longitudinally. The transverse motor (42) is connected to a first lead screw (44) threadedly connected to the longitudinal frame (43) via a coupling. The longitudinal motor is connected to a second lead screw (45) threadedly connected to the box (2) via a coupling.

8. The wire cutting equipment according to claim 1, characterized in that, A hydraulic lifting frame (7) is provided inside the frame (1). A mounting platform (71) for positioning and installing a laser probe (72) is connected to the hydraulic lifting frame (7). The laser probe (72) is adjusted in height by the hydraulic lifting frame (7) to detect the relative position of the target part and the frame (1).

9. A wire cutting device according to claim 1, characterized in that, An auxiliary clamp (31) is connected to the support frame (3) via a shaped flexible tube.

10. A wire cutting device according to claim 1, characterized in that, An auxiliary lighting lamp (32) is connected to the support frame (3) via a shaped flexible tube.

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