Tension adjusting auxiliary device for medium-speed wire feeding machine tool
By designing a sliding groove, adjustment components, and elastic buffer structure within the frame of the wire feeding machine, the problems of wear and lack of adjustability of the tension adjustment device were solved, achieving stable operation and precise tension adjustment of the molybdenum wire and improving machining accuracy.
Patent Information
- Application Number
- CN202520601404.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-01
AI Technical Summary
The existing tension adjustment device of wire feeding machine is prone to accelerated wear and lack of adjustability when sliding adjustment, which affects the stability of the electrode wire and the machining accuracy.
A tension adjustment auxiliary device was designed, comprising a frame, a slide, an adjustment component, a rotating wheel, a slider, a ball bearing guide, and a dual-stage variable diameter spring. The device ensures the stability of the molybdenum wire tension through sliding contact and elastic deformation buffering, and achieves precise adjustment through a motor and a fine-thread rod.
It reduces the impact of friction, extends service life, ensures stable operation of molybdenum wire, improves processing accuracy and adjustment precision, and prevents vibration and processing quality degradation caused by tension fluctuations.
Smart Images
Figure CN223916853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medium-speed wire EDM machine technology, specifically to a tension adjustment auxiliary device for a medium-speed wire EDM machine. Background Technology
[0002] Medium-speed wire EDM machines, widely used in mold manufacturing, precision parts machining, and other fields, operate by using a continuously moving electrode wire as the tool electrode. The high temperature generated by pulsed discharge etches away imperfections from the workpiece. In this process, the electrode wire acts like a "carving tool," and its condition directly affects the machining result. Ideally, the electrode wire should maintain a stable and appropriate tension. When the electrode wire tension is too low, it is prone to vibration during machining. This vibration leads to an unstable discharge gap between the electrode wire and the workpiece, resulting in noticeable streaks and increased roughness on the workpiece surface, severely impacting the workpiece's surface quality.
[0003] For example, patent CN214640803U discloses a molybdenum wire tension adjustment device for a wire feeding machine, including a base, a fixed plate, fixed bolts, a cover plate, a first rotating wheel, a movable block, a second rotating wheel, a limiting plate, an adjusting rod, adjusting components, a spring, and a buffer. The base is an L-shaped seat composed of a horizontal plate and a vertical plate. The base has symmetrically arranged protrusions, and an adjusting rod passing through the movable block is symmetrically fixed between the two protrusions. The outer side of the adjusting rod has an external thread, and two adjusting components are screwed onto the outer side of the external thread. A spring is sleeved on the rod body located between the adjusting components and the movable block. Buffers are connected between the upper and lower sides of the movable block and the corresponding protrusions. This utility model has a reasonable structural design. By adjusting the position of the adjusting components on the adjusting rod, the restoring capacity of the spring can be adjusted according to the needs, better meeting the usage requirements.
[0004] However, the aforementioned tension adjustment device for wire feeding machines is prone to accelerated wear due to sliding friction when adjusting tension, which can affect subsequent tension adjustments and makes it less adjustable. Utility Model Content
[0005] The present invention aims to solve the problems mentioned in the background art by providing an auxiliary device for tension adjustment of a medium wire EDM machine.
[0006] The specific technical solution is as follows:
[0007] A tension adjustment auxiliary device for a medium-speed wire EDM machine includes: a frame fixedly installed on the frame of the medium-speed wire EDM machine; the upper half of both sides of the inner wall of the frame are provided with sliding grooves; adjustment components are slidably connected in both sets of sliding grooves; a first rotating wheel is rotatably connected between the two sets of adjustment components; a second rotating wheel is provided below the first rotating wheel; the middle section of both sides of the inner wall of the frame is provided with a moving groove; an adjustment wheel is provided between the two sets of moving grooves; the adjustment wheel is located between the second rotating wheel and the first rotating wheel; annular grooves for sleeved molybdenum wire are opened on the surfaces of the second rotating wheel and the first rotating wheel; a rotating shaft is rotatably connected to both sides of the second rotating wheel; and the other side of the rotating shaft is rotatably installed on both sides of the frame.
[0008] As a preferred embodiment of this utility model, each of the two sets of moving slots is slidably connected with a linkage block, the adjusting wheel is fixed between the two sets of linkage blocks, one end of one of the two sets of linkage blocks is provided with a threaded hole, and a fine-tooth threaded rod is threadedly connected in the threaded hole.
[0009] As a preferred embodiment of this utility model, the adjusting wheel is provided with a guide wire hole, one end of the moving groove is provided with an empty groove, a motor is provided in the empty groove, and the output shaft of the motor is connected to one end of the fine thread rod.
[0010] In a preferred embodiment of this utility model, the adjusting component includes a slider, a ball bearing guide rail is provided on one side of the inner wall of the slide groove, and a rail groove is provided on the side of the inner wall of the slider that is in contact with the slide groove. The slider forms rolling contact with the ball bearing guide rail through the rail groove, and a rotating shaft is rotatably mounted on one side of the slider, with one end of the first rotating wheel rotatably connected to one end of the rotating shaft.
[0011] As a preferred embodiment of this utility model, a rubber block is bonded to the upper surface of the slider, and a through hole is provided at one end of the lower surface of the slider, with a double-section variable diameter spring connected inside the through hole.
[0012] As a preferred embodiment of this utility model, the other end of the double-section variable diameter spring is connected to a damper, and the damper is fixedly installed on one end of the lower surface of the inner wall of the slide groove.
[0013] This utility model has the following beneficial effects:
[0014] 1. The tension adjustment auxiliary device for a wire EDM machine provided by this utility model, through the design of a slide groove, adjustment components, a first rotating wheel, and a guide hole, causes the first rotating wheel to move up and down when the tension of the molybdenum wire changes. The first rotating wheel, through the adjustment components connected to both sides, can provide buffering and stabilization, ensuring the stability of the molybdenum wire operation and preventing high-frequency vibration caused by tension fluctuations. This keeps the molybdenum wire stable during operation and reduces the impact of vibration on machining accuracy. Then, by starting the motor, the fine-pitch thread rod drives the linkage block located in the moving groove to move the adjustment wheel fixedly connected to it. Since the molybdenum wire passes through the guide hole of the adjustment wheel, the change in the position of the adjustment wheel will change the path of the molybdenum wire, thereby changing the tension of the molybdenum wire.
[0015] 2. The tension adjustment auxiliary device for a wire EDM machine provided by this utility model, through the design of a slider, ball bearing guide rail, rubber block, and double-stage variable diameter spring, allows the slider to slide within the groove when the first rotating wheel moves due to changes in the molybdenum wire tension. Because the groove on the inner wall of the slider forms rolling contact with the ball bearing guide rail on one side of the inner wall of the groove, the frictional force is effectively reduced compared to sliding friction. This allows the slider to respond more sensitively to the movement of the first rotating wheel, ensuring the device can react promptly to changes in molybdenum wire tension, extending its service life. Furthermore, the sliding of the slider within the groove generates... The double-section variable-diameter spring, with its two sections of different diameters, stores or releases the energy generated by changes in molybdenum wire tension through its own elastic deformation, thus buffering and regulating the molybdenum wire tension. Furthermore, when the fine-pitch threaded rod adjusts the position of the adjusting wheel, it works in conjunction with the adjusting assembly. During adjustment, the slider moves accordingly, making the adjustment of molybdenum wire tension more precise. The adjusting assembly can respond promptly to tension changes caused by the fine-pitch threaded rod adjustment and makes fine adjustments through the double-section variable-diameter spring and damper, ensuring that the molybdenum wire tension is always kept within a suitable range, thereby improving the machining accuracy of the wire EDM machine. Attached Figure Description
[0016] Figure 1 A schematic diagram of the overall structure of the tension adjustment auxiliary device for a medium-speed wire EDM machine provided in this embodiment of the utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of the frame of the tension adjustment auxiliary device for a medium-speed wire EDM machine provided in an embodiment of the present invention;
[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the frame of the tension adjustment auxiliary device for a medium-speed wire EDM machine provided in an embodiment of the present invention;
[0019] Figure 4 A schematic diagram of the adjustment component structure of the tension adjustment auxiliary device for a medium-speed wire EDM machine provided in this embodiment of the utility model;
[0020] Figure 5 A schematic diagram of the ball guide structure of the tension adjustment auxiliary device for a wire EDM machine provided in this embodiment of the present invention.
[0021] In the attached image:
[0022] 1. Frame; 101. Slide rail;
[0023] 2. Adjustment assembly; 201. Slider; 202. Rubber block; 203. Rail groove; 204. Rotating shaft; 205. Double-stage variable diameter spring; 206. Damper; 207. Ball bearing guide;
[0024] 3. First rotating wheel; 301. Second rotating wheel; 302. Rotating shaft;
[0025] 4. Moving groove; 401. Fine thread rod; 402. Linkage block; 403. Adjusting wheel; 404. Motor; 405. Guide wire hole. Detailed Implementation
[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0027] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] Example 1
[0031] The tension adjustment auxiliary device for the medium-speed wire EDM machine provided in this embodiment, such as... Figures 1-5 As shown, the device includes: a frame 1 fixedly mounted on the frame of a wire EDM machine; grooves 101 are provided on the upper half of both sides of the inner wall of the frame 1; adjusting components 2 are slidably connected within each set of grooves 101; a first rotating wheel 3 is rotatably connected between the two sets of adjusting components 2; a second rotating wheel 301 is located below the first rotating wheel 3; moving grooves 4 are provided on the middle sections of both sides of the inner wall of the frame 1; an adjusting wheel 403 is located between the two sets of moving grooves 4; the adjusting wheel 403 is located between the second rotating wheel 301 and the first rotating wheel 3; annular grooves for mounting molybdenum wire are opened on the surfaces of both the second rotating wheel 301 and the first rotating wheel 3; rotating shafts 302 are rotatably connected to both sides of the second rotating wheel 301; the other side of the rotating shafts 302 is rotatably mounted on both sides of the frame 1. Linkage blocks 402 are slidably connected within each set of moving grooves 4; the adjusting wheel 403 is fixed between the two sets of linkage blocks 402; one end of one set of linkage blocks 402 has a threaded hole, and a fine-pitch threaded rod 401 is threaded into the threaded hole. The adjusting wheel 403 has a guide wire hole 405, and one end of the moving groove 4 has an empty groove. The empty groove contains a motor 404, and the output shaft of the motor 404 is connected to one end of the fine thread rod 401.
[0032] Through the design of the slide groove 101, the adjusting component 2, the first rotating wheel 3, and the guide hole 405, when the tension of the molybdenum wire changes, it will drive the first rotating wheel 3 to move up and down. The first rotating wheel 3, through the adjusting component 2 connected to both sides, can provide a buffering and stabilizing effect, ensuring the running stability of the molybdenum wire, preventing the molybdenum wire from generating high-frequency vibration due to tension fluctuations, so that the molybdenum wire always remains stable during operation, reducing the impact of vibration on processing accuracy. Then, by starting the motor 404, the fine thread rod 401 drives the linkage block 402 located in the moving groove 4 to move the adjusting wheel 403 fixedly connected to it. Since the molybdenum wire passes through the guide hole 405 of the adjusting wheel 403, the change in the position of the adjusting wheel 403 will change the path of the molybdenum wire, thereby changing the tension of the molybdenum wire.
[0033] Example 2
[0034] The tension adjustment auxiliary device for the medium-speed wire EDM machine provided in this embodiment, such as... Figures 4-5 As shown, the adjustment assembly 2 includes a slider 201. A ball bearing guide 207 is provided on one side of the inner wall of the slide groove 101, and a rail groove 203 is provided on the side of the inner wall of the slider 201 that fits against the slide groove 101. The slider 201 forms rolling contact with the ball bearing guide 207 through the rail groove 203. A rotating shaft 204 is rotatably mounted on one side of the slider 201, and one end of the first rotating wheel 3 is rotatably connected to one end of the rotating shaft 204. A rubber block 202 is bonded to the upper surface of the slider 201, and a through hole is provided at one end of the lower surface of the slider 201. A double-stage variable-diameter spring 205 is connected inside the through hole. A damper 206 is connected to the other end of the double-stage variable-diameter spring 205, and the damper 206 is fixedly installed at one end of the lower surface of the inner wall of the slide groove 101.
[0035] Through the design of slider 201, ball guide rail 207, rubber block 202, and double-stage variable diameter spring 205, when the first rotating wheel 3 moves due to the change in molybdenum wire tension, it will drive slider 201 to slide within the groove 101. Since the groove 203 on the inner wall of slider 201 forms rolling contact with the ball guide rail 207 on one side of the inner wall of groove 101, the friction force can be effectively reduced compared to sliding friction. This allows slider 201 to respond more sensitively to the movement of the first rotating wheel 3, ensuring that the device can respond to changes in molybdenum wire tension in a timely manner, extending its service life. Furthermore, when slider 201 slides within groove 101, it will stretch the double-stage variable diameter spring 205. The double-section variable diameter spring 205, with its two sections of different diameters, stores or releases the energy generated by the change in molybdenum wire tension through its own elastic deformation, thus buffering and regulating the molybdenum wire tension. Furthermore, when the fine-pitch thread rod 401 adjusts the position of the adjusting wheel 403, it works in conjunction with the adjusting component 2. During adjustment, the slider 201 moves accordingly, making the adjustment of the molybdenum wire tension more precise. The adjusting component 2 can respond promptly to the tension changes caused by the adjustment of the fine-pitch thread rod 401 and make fine adjustments through the double-section variable diameter spring 205 and the damper 206 to ensure that the molybdenum wire tension is always kept within a suitable range, thereby improving the machining accuracy of the medium-speed wire cutting machine.
[0036] In summary, the tension adjustment auxiliary device for wire EDM provided in this embodiment has the following advantages: it can reduce the impact of friction during use, extend the service life, ensure that there will be no inconvenience in the later use process due to friction, and make it more convenient to adjust the tension.
[0037] In use, when the tension of the molybdenum wire changes, it drives the first rotating wheel 3 to move up and down. The first rotating wheel 3 slides in the groove 101 through the sliders 201 connected to both sides. Since the rail groove 203 on the inner wall of the slider 201 forms rolling contact with the ball guide rail 207 on one side of the inner wall of the groove 101, the friction can be effectively reduced. When the slider 201 slides in the groove 101, it will stretch or compress the double-section variable diameter spring 205. The two sections of the double-section variable diameter spring 205 have different diameters. Through its own elastic deformation, it stores or releases the energy generated by the change in the tension of the molybdenum wire, which plays a role in buffering and regulating the tension of the molybdenum wire. When the fine thread rod 401 drives the adjusting wheel 403 to adjust the position of the molybdenum wire, it works in conjunction with the adjusting component 2 to make the adjustment of the molybdenum wire tension more precise. The adjusting component 2 can respond to the tension change brought about by the adjustment of the fine thread rod 401 in a timely manner, and make fine adjustments through the double-section variable diameter spring 205 and the damper 206 to ensure that the tension of the molybdenum wire is always kept within a suitable range, thereby improving the machining accuracy of the wire feed machine.
[0038] The frictional force described above is merely a preferred embodiment of this utility model and is not intended to limit the implementation method and protection scope of this utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of this utility model should be included within the protection scope of this utility model.
Claims
1. A tension adjustment auxiliary device for a medium-speed wire EDM machine, characterized in that, include: A frame (1) is fixedly installed on the frame of a wire EDM machine. The upper half of both sides of the inner wall of the frame (1) is provided with a sliding groove (101). An adjustment component (2) is slidably connected in both sets of the sliding grooves (101). A first rotating wheel (3) is rotatably connected between the two sets of the adjustment components (2). A second rotating wheel (301) is provided below the first rotating wheel (3). The middle section of both sides of the inner wall of the frame (1) is provided with a moving groove (4). An adjustment wheel (403) is provided between the two sets of the moving grooves (4). The adjustment wheel (403) is located between the second rotating wheel (301) and the first rotating wheel (3). The surfaces of the second rotating wheel (301) and the first rotating wheel (3) are provided with annular grooves for fitting molybdenum wire. A rotating shaft (302) is rotatably connected to both sides of the second rotating wheel (301). The other side of the rotating shaft (302) is rotatably installed on both sides of the frame (1).
2. The tension adjustment auxiliary device for a medium-speed wire EDM machine according to claim 1, characterized in that, Both sets of moving slots (4) are slidably connected with linkage blocks (402), and the adjusting wheel (403) is fixed between the two sets of linkage blocks (402). One end of one set of linkage blocks (402) is provided with a threaded hole, and a fine thread rod (401) is threadedly connected in the threaded hole.
3. The tension adjustment auxiliary device for a medium-speed wire EDM machine according to claim 1, characterized in that, The adjusting wheel (403) is provided with a guide wire hole (405), and one end of the moving groove (4) is provided with an empty groove. The empty groove is provided with a motor (404), and the output shaft of the motor (404) is connected to one end of the fine thread rod (401).
4. The tension adjustment auxiliary device for a medium-speed wire EDM machine according to claim 1, characterized in that, The adjustment component (2) includes a slider (201), a ball guide rail (207) is provided on one side of the inner wall of the slide groove (101), and a rail groove (203) is provided on the side of the inner wall of the slider (201) that is in contact with the slide groove (101). The slider (201) forms a rolling contact with the ball guide rail (207) through the rail groove (203). A rotating shaft (204) is rotatably installed on one side of the slider (201), and one end of the first rotating wheel (3) is rotatably connected to one end of the rotating shaft (204).
5. The tension adjustment auxiliary device for a medium-speed wire EDM machine according to claim 4, characterized in that, A rubber block (202) is bonded to the upper surface of the slider (201), and a through hole is provided at one end of the lower surface of the slider (201), and a double-section variable diameter spring (205) is connected in the through hole.
6. The tension adjustment auxiliary device for a medium-speed wire EDM machine according to claim 5, characterized in that, The other end of the double-section variable diameter spring (205) is connected to a damper (206), which is fixedly installed on one end of the lower surface of the inner wall of the slide groove (101).