Wire electrode constant tension device of linear cutting machine
By using pneumatic pressure and tension sensing devices in the online cutting machine tool, the tension of the molybdenum wire is adjusted in real time, which solves the problems of loosening and lagging of the molybdenum wire and improves the processing efficiency and quality.
Patent Information
- Application Number
- CN202422232144.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The molybdenum wires of existing wire cutting machines are prone to single-sided loose wires during high-speed forward and reverse rotation, resulting in reduced processing efficiency and rough surface of the workpiece. The existing wire tensioning devices are prone to failure in harsh environments, affecting the processing quality.
Pneumatic pressure is used as a constant source of tension and is equipped with a tension sensing device to adjust the tension of the tightening wheel through the cylinder and linear guide rails, real-time tension control is achieved and the guide wheel structure is simplified.
The problems of molybdenum wire lag and failure are solved, cutting efficiency and processing quality are improved, and the operation process is simplified.
Smart Images
Figure CN223056881U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wire cutting machine tools, and particularly relates to a constant tension device for an electrode wire of a wire cutting machine tool. Background Technique
[0002] A wire cutting machine tool, also known as a numerically controlled electro-discharge wire cutting machine tool, is a machine tool that uses the principle of electro-discharge machining to process workpieces. When the gap between the workpiece and the wire electrode (usually a metal wire, such as molybdenum wire) is large enough to be broken down by a pulsed voltage, a spark discharge occurs between the two, thereby corroding local metal and realizing the cutting process of the workpiece.
[0003] In existing wire cutting machine tools, most use molybdenum wire containing molybdenum as the electrode wire. Due to the high-speed forward and reverse rotation of the machine tool, after long-term use, the molybdenum wire will show a situation of unilateral loose wire, which not only causes the surface of the machined part to be very rough, with streaks on the workpiece surface, but also reduces the processing efficiency. Therefore, various wire tensioning devices or structures have emerged on the market. At present, most wire tensioning devices use spring tension, or motor-driven tension, or gravity tension. Due to the very poor wire cutting environment, the wire tensioning devices often lose their due functions, thus affecting the processing efficiency of the equipment. Content of the Utility Model
[0004] The purpose of the utility model is to provide a constant tension device for an electrode wire of a wire cutting machine tool aiming at the deficiencies and defects in the prior art. This device uses pneumatic pressure as a constant tension source, can solve the problem of constant tension of the machine tool, and adds a tension sensing device for tension detection, so as to be able to control the tension adjustment of the wire tightening wheel at all times. This device can not only solve the problems of molybdenum wire jamming and failure caused by a dirty and complex environment, but also simplifies more guide wheels, and its operation is more concise and convenient, thereby improving the cutting efficiency.
[0005] To achieve the above object, the utility model adopts the following technical solutions: A constant-tension device for the electrode wire of a wire-cutting machine tool, which includes a main machine box base 6. On the upper end of the main machine box base 6, a wire-feeding spool 2, a constant-tension device 4, and an XY slide 5 are successively installed from left to right. And a wire-feeding motor 3 is provided on the wire-feeding spool 2. The constant-tension device 4 includes a support column 41. A lower extension plate 410 and an upper extension plate 414 are fixedly connected to the support column 41. A second wire-aligning wheel 46 and a second wire-tightening assembly 47 are arranged between the lower extension plate 410 and the upper extension plate 414. Both the second wire-aligning wheel 46 and the second wire-tightening assembly 47 are installed on the support column 41. A first wire-passing wheel 42 is provided at one end of the upper extension plate 414. A taper device 413 is installed at the other end of the upper extension plate 414. And the upper extension plate 414 is connected to a second guide wheel 412 through the taper device 413. A third wire-aligning wheel 48 is installed at one end of the lower extension plate 410. A first guide wheel 411 is installed at the other end of the lower extension plate 410. And a tension sensing device 49 is provided in the middle of the lower extension plate 410. An extension plate 44 is installed on one side of the support column 41. A first wire-aligning wheel 45 is provided on the extension plate 44. A first wire-tightening assembly 43 is fixedly connected to one side of the support column 41.
[0006] Further, the wire-feeding spool 2 is arranged on one side of the constant-tension device 4, and the XY slide 5 is arranged on the other side of the constant-tension device 4.
[0007] Further, a support pad 1 for increasing the anti-slip property and stability of the main machine box base 6 is installed on the bottom of the main machine box base 6.
[0008] Further, the first wire-tightening assembly 43 includes a first wire-tightening cylinder 43-4 and a first wire-tightening linear guide 43-1. One end of the first wire-tightening cylinder 43-4 and one end of the first wire-tightening linear guide 43-1 are both arranged on the support column 41. And a first wire-tightening ejector rod 43-3 is provided on the output end of the first wire-tightening cylinder 43-4. An upper wire-tightening wheel 43-2 is provided at the other end of the first wire-tightening linear guide 43-1.
[0009] Further, the second wire-tightening assembly 47 includes a second wire-tightening cylinder 47-1. A second wire-tightening linear guide 47-3 is provided on one side of the second wire-tightening cylinder 47-1. And the second wire-tightening linear guide 47-3 is installed on the support column 41. A lower wire-tightening wheel 47-4 is provided on the side of the second wire-tightening linear guide 47-3 away from the second wire-tightening cylinder 47-1. And a second wire-tightening ejector rod 47-2 is provided on the output end of the second wire-tightening cylinder 47-1.
[0010] Further, the outer end of the tension sensing device 49 is in contact with the electrode wire.
[0011] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: This device uses pneumatic pressure as a constant tension source, which can solve the problem of constant tension of the machine tool, and adds a tension sensing device for tension detection, so as to be able to control the tension adjustment of its wire tightening wheel at any time. This device can not only solve the problems of wire jamming and failure of molybdenum wire caused by dirty and complex environment, but also simplifies more guide wheels, and its operation is more concise and convenient, thereby improving the cutting efficiency. Brief Description of the Drawings
[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0013] Figure 1 is a schematic structural diagram of the present utility model.
[0014] Figure 2 is a schematic structural diagram of the constant tension device in the present utility model.
[0015] Figure 3 is a schematic structural diagram of the first wire tightening assembly in the present utility model
[0016] Figure 4 is a schematic structural diagram of the second wire tightening assembly in the present utility model.
[0017] Figure 5 is a schematic diagram of the working state of the present utility model.
[0018] Description of the reference numerals: support pad 1, wire transporting spool 2, wire transporting motor 3, constant tension device 4, XY carriage 5, main chassis base 6, support column 41, first wire guiding wheel 42, first wire tightening assembly 43, extension plate 44, first wire fixing wheel 45, second wire fixing wheel 46, second wire tightening assembly 47, third wire fixing wheel 48, tension sensing device 49, lower extension plate 410, first guide wheel 411, second guide wheel 412, taper device 413, upper extension plate 414, first wire tightening linear guide 43-1, upper wire tightening wheel 43-2, first wire tightening ejector rod 43-3, first wire tightening cylinder 43-4, second wire tightening cylinder 47-1, second wire tightening ejector rod 47-2, second wire tightening linear guide 47-3, lower wire tightening wheel 47-4. Detailed Description of the Embodiment
[0019] Refer to Figures 1-5As shown in the figure, the technical solution adopted in this specific embodiment is as follows: It includes a main chassis base 6. On the upper end of the main chassis base 6, a wire feeding spool 2, a constant tension device 4, and an XY slide 5 are sequentially installed from left to right. And a wire feeding motor 3 is provided on the wire feeding spool 2; The constant tension device 4 includes a support column 41. A lower extension plate 410 and an upper extension plate 414 are fixedly connected to the support column 41. A second wire guiding wheel 46 and a second wire tightening assembly 47 are provided between the lower extension plate 410 and the upper extension plate 414. Both the second wire guiding wheel 46 and the second wire tightening assembly 47 are installed on the support column 41. A first wire guiding wheel 42 is provided at one end of the upper extension plate 414. A taper device 413 is installed at the other end of the upper extension plate 414. And the upper extension plate 414 is connected to a second guide wheel 412 through the taper device 413. A third wire guiding wheel 48 is installed at one end of the lower extension plate 410. A first guide wheel 411 is installed at the other end of the lower extension plate 410. And a tension sensing device 49 is provided in the middle of the lower extension plate 410. An extension plate 44 is installed on one side of the support column 41. A first wire guiding wheel 45 is provided on the extension plate 44. A first wire tightening assembly 43 is fixedly connected to one side of the support column 41.
[0020] More specifically, the wire feeding spool 2 is arranged on one side of the constant tension device 4, and the XY slide 5 is arranged on the other side of the constant tension device 4. The wire feeding motor 3 drives its wire feeding spool 2 to move, thereby driving the molybdenum wire to rotate on the constant tension device 4. And the XY slide 5 is used to place the item to be processed and can move and adjust the item to be processed through the XY slide 5.
[0021] More specifically, a support pad 1 for increasing the anti-slip property and stability of the main chassis base 6 is installed on the bottom of the main chassis base 6.
[0022] More specifically, the first wire tightening assembly 43 includes a first wire tightening cylinder 43-4 and a first wire tightening linear guide 43-1. One end of the first wire tightening cylinder 43-4 and one end of the first wire tightening linear guide 43-1 are both arranged on the support column 41. And a first wire tightening ejector rod 43-3 is provided on the output end of the first wire tightening cylinder 43-4. A upper wire tightening wheel 43-2 is provided at the other end of the first wire tightening linear guide 43-1. When in use, the upper wire tightening wheel 43-2 is arranged on the first wire tightening linear guide 43-1. And when it is necessary to adjust its tightness, the first wire tightening cylinder 43-4 can be made to drive the first wire tightening ejector rod 43-3. The upper wire tightening wheel 43-2 is pushed through the first wire tightening ejector rod 43-3, thereby adjusting the relative position of the upper wire tightening wheel 43-2.
[0023] More specifically, the second wire tightening assembly 47 includes a second wire tightening cylinder 47-1. On one side of the second wire tightening cylinder 47-1, there is a second wire tightening linear guide 47-3, and the second wire tightening linear guide 47-3 is installed on the support column 41. On the side of the second wire tightening linear guide 47-3 away from the second wire tightening cylinder 47-1, there is a lower wire tightening wheel 47-4, and on the output end of the second wire tightening cylinder 47-1, there is a second wire tightening ejector rod 47-2. When it is necessary to adjust its tightness, the lower wire tightening wheel 47-4 can be pushed by the second wire tightening ejector rod 47-2, and by changing the position of the lower wire tightening wheel 47-4, the tightness of the molybdenum wire can be adjusted.
[0024] More specifically, the outer end of the tension sensing device 49 is in contact with the electrode wire. Through the tension sensing device 49, the tightness of the molybdenum wire can be sensed in a timely manner, and then the tightness of the molybdenum wire can be adjusted through the first wire tightening assembly 43 and the second wire tightening assembly 47.
[0025] The working principle of the present utility model: When in use, the wire feeding motor 3 drives the wire feeding spool 2 to move, and the wire feeding spool 2 drives the molybdenum wire to rotate. When rotating, the molybdenum wire first comes from the wire feeding spool 2, and then successively winds around the first fixed wire wheel 45, the upper wire tightening wheel 43-2, the first wire passing wheel 42 and the second guide wheel 412, then winds around the first guide wheel 411, and after passing through the tension sensing device 49, winds around the third fixed wire wheel 48, the lower wire tightening wheel 47-4, and the second fixed wire wheel 46, and finally winds back to the wire feeding spool 2. When the molybdenum wire becomes loose, the tension sensing device 49 will sense it, and thus the first wire tightening cylinder 43-4 and the second wire tightening cylinder 47-1 will be started. The first wire tightening cylinder 43-4 and the second wire tightening cylinder 47-1 respectively push the first wire tightening ejector rod 43-3 and the second wire tightening ejector rod 47-2, and use the first wire tightening ejector rod 43-3 and the second wire tightening ejector rod 47-2 to push and adjust the upper wire tightening wheel 43-2 and the lower wire tightening wheel 47-4, and use the upper wire tightening wheel 43-2 and the lower wire tightening wheel 47-4 to adjust the tightness of the molybdenum wire. Among them, a cylinder can be used as a constant tension for this device, or elasticity can be used as the tension. Or it can be driven by a motor, a lead screw, and a gear to drive the wire tightening wheel.
[0026] The above is only used to illustrate the technical solution of the present utility model and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model, as long as they do not depart from the spirit and scope of the technical solution of the present utility model, should be covered within the scope of the claims of the present utility model.
Claims
1. A constant tension device for the electrode wire of a wire cutting machine tool, characterized in that: It includes a main chassis base (6). An electrode wire spool (2), a constant tension device (4), and an XY slide (5) are successively installed on the upper end of the main chassis base (6) from left to right. And a wire feeding motor (3) is provided on the electrode wire spool (2). The constant tension device (4) includes a support column (41). A lower extension plate (410) and an upper extension plate (414) are fixedly connected to the support column (41). A second wire fixing wheel (46) and a second wire tightening assembly (47) are provided between the lower extension plate (410) and the upper extension plate (414). Both the second wire fixing wheel (46) and the second wire tightening assembly (47) are installed on the support column (41). A first wire passing wheel (42) is provided at one end of the upper extension plate (414). A taper device (413) is installed at the other end of the upper extension plate (414). And the upper extension plate (414) is connected to a second guide wheel (412) through the taper device (413). A third wire fixing wheel (48) is installed at one end of the lower extension plate (410). A first guide wheel (411) is installed at the other end of the lower extension plate (410). And a tension sensing device (49) is provided in the middle of the lower extension plate (410). An extension plate (44) is installed on one side of the support column (41). A first wire fixing wheel (45) is provided on the extension plate (44). A first wire tightening assembly (43) is fixedly connected to one side of the support column (41).
2. The constant tension device for the electrode wire of a wire cutting machine tool according to claim 1, characterized in that: The electrode wire spool (2) is arranged on one side of the constant tension device (4), and the XY slide (5) is arranged on the other side of the constant tension device (4).
3. The constant tension device for the electrode wire of a wire cutting machine tool according to claim 1, wherein: Support pads (1) for increasing the anti-slip property and stability of the main chassis base (6) are installed on the bottom of the main chassis base (6).
4. The constant tension device for the electrode wire of a wire cutting machine tool according to claim 1, characterized in that: The first wire tightening assembly (43) includes a first wire tightening cylinder (43-4) and a first wire tightening linear guide (43-1). One end of the first wire tightening cylinder (43-4) and one end of the first wire tightening linear guide (43-1) are both arranged on the support column (41). And a first wire tightening ejector rod (43-3) is provided on the output end of the first wire tightening cylinder (43-4). An upper wire tightening wheel (43-2) is provided at the other end of the first wire tightening linear guide (43-1).
5. The constant tension device for the electrode wire of a wire cutting machine tool according to claim 1, wherein: The second wire tightening assembly (47) includes a second wire tightening cylinder (47-1). A second wire tightening linear guide (47-3) is provided on one side of the second wire tightening cylinder (47-1). And the second wire tightening linear guide (47-3) is installed on the support column (41). A lower wire tightening wheel (47-4) is provided on the side of the second wire tightening linear guide (47-3) away from the second wire tightening cylinder (47-1). A second wire tightening ejector rod (47-2) is provided on the output end of the second wire tightening cylinder (47-1).
6. The constant tension device for the electrode wire of a wire cutting machine tool according to claim 1, wherein: The outer end of the tension sensing device (49) is in contact with the electrode wire.