Linear cutting wire tightening device and numerical control linear cutting machine tool
By designing a wire cutting filament device that includes exterior tube, slider, guide wire wheel, and elastic loading parts, the problem of difficulty stabilizing the electrode swelling tightness is solved, and the stability of the electrode wire is tightened. Accuracy and surface quality.
Patent Information
- Application Number
- CN202421170852.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-27
Smart Images
Figure CN222386078U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wire cutting processing equipment, in particular to a wire cutting wire tightening device and a numerically controlled wire cutting machine tool. Background Art
[0002] CNC EDM wire cutting uses a molybdenum wire that is passed through a pulse current and moves at high speed as an electrode. It generates electric sparks through the discharge between the pulse and the workpiece for cutting. It is especially suitable for contour cutting of molds or components. Wire cutting is affected by factors such as processing speed, cutting wire tension, discharge and coolant flushing. In particular, the cutting wire tension requires high tension. Otherwise, the processing route of the electrode wire will be deformed, which will have a serious impact on the processing accuracy and surface quality, and even make the processed parts scrapped. At the same time, with the wear of the cutting dead wire and the guide wheel during CNC EDM wire cutting, the tension of the electrode wire will decrease. Therefore, a tension control device for the electrode wire is needed to stably maintain the tension of the electrode wire and ensure the processing quality.
[0003] Therefore, it is necessary to develop a wire cutting wire tightening device for the above problems. Utility Model Content
[0004] The utility model aims to provide a wire cutting wire tightening device and a CNC wire cutting machine tool to solve the problems existing in the above-mentioned prior art, with a simple structure, effectively and stably maintaining the tension of the electrode wire, and effectively ensuring the processing quality.
[0005] To achieve the above purpose, the utility model provides the following solutions:
[0006] The utility model provides a wire cutting wire tightening device, comprising: an outer guide cylinder, a sliding member, a wire guide wheel and an elastic loading member, wherein the outer guide cylinder is used to be fixedly connected to the upper wire rack of the numerical control wire cutting machine; the sliding member is provided with a portion inside the outer guide cylinder and slidably connected to the outer guide cylinder; the wire guide wheel is rotatably connected to one end of the sliding member extending out of the outer guide cylinder, and the wire guide wheel is used to tighten the cutting wire; one end of the elastic loading member is connected to the bottom of the outer guide cylinder, and the other end is used to be connected to the sliding member to push the sliding member to move toward the outside of the outer guide cylinder so as to provide a tightening force for the wire guide wheel to tighten the cutting wire to a required degree.
[0007] Preferably, the sliding member includes a directional inner guide cylinder, a first bearing seat bracket, a second bearing seat bracket, a wire guide wheel shaft, a first bearing and a second bearing, the directional inner guide cylinder is slidably connected to the outer guide cylinder, one end of the first bearing seat bracket extends into the outer guide cylinder and is fixedly connected to the directional inner guide cylinder, and the other end is fixedly connected to the first bearing, one end of the second bearing seat bracket extends into the outer guide cylinder and is fixedly connected to the directional inner guide cylinder, and the other end is fixedly connected to the second bearing, one end of the wire guide wheel shaft is fixedly connected to the inner ring of the first bearing, and the other end is fixedly connected to the inner ring of the second bearing, and the wire guide wheel sleeve is fixed on the outside of the wire guide wheel shaft.
[0008] Preferably, the sliding member also includes a first guide block and a second guide block, a first guide groove and a second guide groove are provided on the inner side wall of the outer guide cylinder, a connecting line of the first guide groove and the second guide groove passes through the axial center line of the outer guide cylinder, the first guide block and the second guide block are fixedly connected to the outer side of the directional inner guide cylinder, the first guide block is used to be slidably connected in the first guide groove, and the second guide block is used to be slidably connected in the second guide groove.
[0009] Preferably, the elastic loading member includes a spring, the opening of the directional inner guide cylinder is arranged toward the bottom of the outer guide cylinder, one end of the spring is connected to the bottom of the outer guide cylinder, and the other end is used to extend into the directional inner guide cylinder and abut against the directional inner guide cylinder.
[0010] Preferably, it also includes a loading inner guide cylinder, a loading nut and a loading screw, wherein the loading inner guide cylinder is slidably connected in the outer guide cylinder, and the opening of the loading inner guide cylinder faces the directional inner guide cylinder, and the end of the spring away from the directional inner guide cylinder is used to extend into the loading inner guide cylinder, and a through hole is provided at the bottom of the outer guide cylinder, and the loading nut is fixedly connected to the outside of the through hole, and the loading screw is threadedly connected to the loading nut and passes through the through hole to extend into the outer guide cylinder to tighten the loading inner guide cylinder.
[0011] Preferably, the end of the loading screw rod used for contacting the loading inner guide cylinder is a tapered end, and the end of the tapered end with a smaller cross-sectional area is used for contacting the loading inner guide cylinder.
[0012] Preferably, a limit screw is further included. A threaded hole is provided on the side wall of the opening of the outer guide tube. The limit screw is threadedly connected to the threaded hole and extends into the outer guide tube to limit the extreme position of the sliding of the directional inner guide tube in the outer guide tube.
[0013] Preferably, it also includes a fixed bridge arm, one end of which is used to be fixedly connected to the outer guide cylinder, and the other end of the fixed bridge arm is provided with a first bridge arm screw hole and a second bridge arm screw hole, and the first bridge arm screw hole and the second bridge arm screw hole are used to allow bolts to pass through and be fastened to the upper wire rack of the CNC wire cutting machine.
[0014] The utility model also provides a numerically controlled wire cutting machine tool, comprising a wire cutting wire tightening device as described in any one of the above items;
[0015] Compared with the prior art, the utility model has achieved the following technical effects:
[0016] The utility model provides a wire cutting wire tightening device and a numerically controlled wire cutting machine tool, wherein the outer guide cylinder is fixedly connected to the upper wire frame of the numerically controlled wire cutting machine tool, the wire guide wheel is pressed against the cutting wire, and the elastic loading device is adjusted to make the sliding part slide so as to provide a tightening force for the wire guide wheel so that the cutting wire is tightened to a required degree. The utility model has a simple structure, can effectively and stably maintain the tightening force of the electrode wire, and effectively ensures the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 A schematic diagram of the structure of the wire cutting and tightening device provided by the utility model;
[0019] Figure 2 A cross-sectional schematic diagram of a wire cutting and tightening device provided by the utility model;
[0020] Figure 3 for Figure 2 A cross-sectional view of the middle surface;
[0021] Figure 4 A schematic structural diagram of the wire cutting and tightening device provided by the utility model when in use;
[0022] In the figure: 28, wire cutting wire tensioning device; 1, outer guide cylinder; 2, wire guide wheel shaft; 3, first bearing; 4, second bearing; 5, wire guide wheel; 6, first bracket of bearing seat; 7, second bracket of bearing seat; 8, first guide groove; 9, second guide groove; 10, directional inner guide cylinder; 11, first guide block; 12, second guide block; 13, limit screw; 14, spring; 15, loading inner guide cylinder; 16, loading nut; 17, loading screw; 18, fixed bridge arm; 19, first screw hole of bridge arm; 20, second screw hole of bridge arm; 21, wire storage cylinder; 22, original position of wire cutting; 23, position after wire cutting is installed; 24, first bolt; 25, second bolt; 26, wire guide wheel of bed; 27, upper wire rack. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The utility model aims to provide a wire cutting wire tightening device and a CNC wire cutting machine tool to solve the problems existing in the above-mentioned prior art, with a simple structure, effectively and stably maintaining the tension of the electrode wire, and effectively ensuring the processing quality.
[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0026] Embodiment 1
[0027] This embodiment provides a wire cutting and tightening device 28, such as Figures 1 to 4 As shown, it includes: an outer guide cylinder 1, a sliding member, a wire guide wheel 5 and an elastic loading member, the outer guide cylinder 1 is used to be fixedly connected to the upper wire frame 27 of the CNC wire cutting machine; the sliding member is provided with a sliding connection with the inner part of the outer guide cylinder 1 and with the outer guide cylinder 1; the wire guide wheel 5 is rotatably connected to one end of the sliding member extending out of the outer guide cylinder 1, and the wire guide wheel 5 is used to tighten the cutting wire; one end of the elastic loading member is connected to the bottom of the outer guide cylinder, and the other end is used to connect with the sliding member to push the sliding member to move to the outside of the outer guide cylinder 1 so as to provide a tightening force for the wire guide wheel 5 to tighten the cutting wire to a required degree, the outer guide cylinder 1 is fixedly connected to the upper wire frame 27 of the CNC wire cutting machine, the wire guide wheel 5 is pressed against the cutting wire, the elastic loading device is adjusted to make the sliding member slide, thereby providing a tightening force for the wire guide wheel 5 to tighten the cutting wire to a required degree, the structure is simple, and the tightening force of the electrode wire is effectively and stably maintained, thereby effectively ensuring the processing quality.
[0028] In a preferred scheme of the present embodiment, the sliding member includes a directional inner guide cylinder 10, a first bearing seat bracket 6, a second bearing seat bracket 7, a wire guide wheel shaft 2, a first bearing 3 and a second bearing 4. The directional inner guide cylinder 10 is slidably connected to the outer guide cylinder 1. One end of the first bearing seat bracket 6 extends into the outer guide cylinder 1 and is fixedly connected to the directional inner guide cylinder 10, and the other end is fixedly connected to the first bearing 3. One end of the second bearing seat bracket 7 extends into the outer guide cylinder 1 and is fixedly connected to the directional inner guide cylinder 10, and the other end is fixedly connected to the second bearing. One end of the wire guide wheel shaft 2 is fixedly connected to the inner ring of the first bearing 3, and the other end is fixedly connected to the inner ring of the second bearing 4. The wire guide wheel 5 is sleeved and fixed on the outside of the wire guide wheel shaft 2.
[0029] In a preferred solution of the present embodiment, the sliding member further includes a first guide block 11 and a second guide block 12, a first guide groove 8 and a second guide groove 9 are provided on the inner side wall of the outer guide cylinder 1, a connecting line of the first guide groove 8 and the second guide groove 9 passes through the axial center line of the outer guide cylinder 1, the first guide block 11 and the second guide block 12 are fixedly connected to the outer side of the directional inner guide cylinder 10, the first guide block 11 is used for sliding connection in the first guide groove 8, and the second guide block 12 is used for sliding connection in the second guide groove 9.
[0030] In a preferred solution of the present embodiment, the elastic loading member includes a spring 14, and the opening of the directional inner guide cylinder 10 is arranged toward the bottom of the outer guide cylinder 1. One end of the spring 14 is connected to the bottom of the outer guide cylinder 1, and the other end is used to extend into the directional inner guide cylinder and abut against the directional inner guide cylinder. The two grooves of the directional inner guide cylinder 10 and the loading inner guide cylinder 15 are used to place the spring 14, which can position and stabilize the spring 14.
[0031] In a preferred solution of the present embodiment, the wire cutting tightening device 28 further comprises a loading inner guide cylinder 15, a loading nut 16 and a loading screw 17. The loading inner guide cylinder 15 is slidably connected to the outer guide cylinder 1, and the opening of the loading inner guide cylinder 15 faces the directional inner guide cylinder 10. The two grooves of the directional inner guide cylinder 10 and the loading inner guide cylinder 15 are used to place the spring 14, so that the spring 14 can be positioned and stabilized. The end of the spring 14 away from the directional inner guide cylinder 10 is used to extend into the loading inner guide cylinder 15. The outer guide cylinder 1 is provided with a through hole at the bottom, a loading nut 16 is fixedly connected to the outer side of the through hole, a loading screw 17 is threadedly connected with the loading nut 16 and passes through the through hole to extend into the outer guide cylinder 1 to tighten the loading inner guide cylinder 15. When loading, the loading inner guide cylinder 15 is pushed by rotating the loading screw 17 to drive the spring 14 to load the directional inner guide cylinder 10, and the directional inner guide cylinder 10 drives two bearing seat brackets and the wire wheel to apply the expansion force to the cutting wire, so that the cutting wire is expanded to the required degree, and the expansion force can be continuously adjusted.
[0032] In a preferred solution of this embodiment, the end of the loading screw 17 that is used to contact the loading inner guide cylinder 15 is a tapered end, and the end with a smaller cross-sectional area of the tapered end is used to contact the loading inner guide cylinder 15. When the loading screw 17 is rotated, friction can be reduced, making it easier to adjust the tightening force.
[0033] In a preferred solution of the present embodiment, the wire cutting tensioning device 28 also includes a limit screw 13, and a threaded hole is provided on the side wall at the opening of the outer guide tube 1. The limit screw 13 is threadedly connected to the threaded hole and extends into the outer guide tube 1 to limit the sliding limit position of the directional inner guide tube 10 in the outer guide tube 1, thereby preventing the directional inner guide tube 10 from falling out of the outer guide tube.
[0034] In a preferred scheme of the present embodiment, the wire cutting wire tensioning device 28 also includes a fixed bridge arm 18, one end of the fixed bridge arm 18 is used to be fixedly connected to the outer guide tube 1, and the other end of the fixed bridge arm 18 is provided with a first bridge arm screw hole 19 and a second bridge arm screw hole 20, and the first bridge arm screw hole 19 and the second bridge arm screw hole 20 are used to allow bolts to pass through and be fastened to the upper wire frame 27 of the CNC wire cutting machine.
[0035] Embodiment 2
[0036] This embodiment also provides a CNC wire cutting machine tool, including a wire cutting wire tensioning device 28 as described above, an upper wire rack 27, a wire storage drum 21 and a bed wire guide wheel, wherein the wire cutting wire tensioning device is arranged between the wire storage drum 21 and the bed wire guide wheel 26.
[0037] Embodiment 3
[0038] This embodiment also provides a method for using the wire cutting and tightening device 28 as in the first embodiment, comprising the following steps:
[0039] The first bolt 24 and the second bolt 25 pass through the first screw hole 19 and the second screw hole 20 of the bridge arm that fix the bridge arm 18 respectively on the upper wire rack 27 of the CNC wire cutting machine, and the brick arch rack screw causes the wire guide wheel 5 to expand the cutting wire from the original position 22 of the wire cutting wire to the position 23 after the wire cutting wire is installed, thereby ensuring that the cutting wire is accurately arranged on the wire storage tube 21.
[0040] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A wire cutting and tightening device, characterized in that: include: An outer guide cylinder, the outer guide cylinder is used to be fixedly connected to an upper wire frame of a CNC wire cutting machine tool; A sliding member, the sliding member is arranged in sliding connection with the outer guide cylinder and the outer guide cylinder; A wire guide wheel, the wire guide wheel is rotatably connected to one end of the sliding member extending out of the outer guide cylinder, and the wire guide wheel is used to tighten the cutting wire; as well as An elastic loading member, one end of which is connected to the bottom of the outer guide cylinder, and the other end is used to connect to the sliding member to push the sliding member to move toward the outside of the outer guide cylinder so as to provide a tightening force for the wire guide wheel to tighten the cutting wire to a required degree.
2. The wire cutting and tightening device according to claim 1, characterized in that: The sliding member includes a directional inner guide cylinder, a first bearing seat bracket, a second bearing seat bracket, a wire guide wheel shaft, a first bearing and a second bearing. The directional inner guide cylinder is slidably connected to the outer guide cylinder, one end of the first bearing seat bracket extends into the outer guide cylinder and is fixedly connected to the directional inner guide cylinder, and the other end is fixedly connected to the first bearing, one end of the second bearing seat bracket extends into the outer guide cylinder and is fixedly connected to the directional inner guide cylinder, and the other end is fixedly connected to the second bearing, one end of the wire guide wheel shaft is fixedly connected to the inner ring of the first bearing, and the other end is fixedly connected to the inner ring of the second bearing, and the wire guide wheel sleeve is fixed on the outside of the wire guide wheel shaft.
3. The wire cutting and tightening device according to claim 2, characterized in that: The sliding member also includes a first guide block and a second guide block, a first guide groove and a second guide groove are provided on the inner side wall of the outer guide cylinder, a connecting line of the first guide groove and the second guide groove passes through the axial center line of the outer guide cylinder, the first guide block and the second guide block are fixedly connected to the outer side of the directional inner guide cylinder, the first guide block is used for sliding connection in the first guide groove, and the second guide block is used for sliding connection in the second guide groove.
4. The wire cutting and tightening device according to claim 2, characterized in that: The elastic loading member includes a spring, the opening of the directional inner guide cylinder is arranged toward the bottom of the outer guide cylinder, one end of the spring is connected to the bottom of the outer guide cylinder, and the other end is used to extend into the directional inner guide cylinder and abut against the directional inner guide cylinder.
5. The wire cutting and tightening device according to claim 4, characterized in that: It also includes a loading inner guide cylinder, a loading nut and a loading screw, wherein the loading inner guide cylinder is slidably connected to the outer guide cylinder, and the opening of the loading inner guide cylinder faces the directional inner guide cylinder, and the end of the spring away from the directional inner guide cylinder is used to extend into the loading inner guide cylinder, and a through hole is provided at the bottom of the outer guide cylinder, and the loading nut is fixedly connected to the outside of the through hole, and the loading screw is threadedly connected to the loading nut and passes through the through hole to extend into the outer guide cylinder to tighten the loading inner guide cylinder.
6. The wire cutting and tightening device according to claim 5, characterized in that: The end of the loading screw rod used for contacting the loading inner guide cylinder is a tapered end, and the end of the tapered end with a smaller cross-sectional area is used for contacting the loading inner guide cylinder.
7. The wire cutting and tightening device according to claim 6, characterized in that: It also includes a limit screw. A threaded hole is provided on the side wall of the opening of the outer guide tube. The limit screw is threadedly connected to the threaded hole and extends into the outer guide tube to limit the extreme position of the sliding of the directional inner guide tube in the outer guide tube.
8. The wire cutting and tightening device according to claim 1, characterized in that: It also includes a fixed bridge arm, one end of which is used to be fixedly connected to the outer guide cylinder, and the other end of the fixed bridge arm is provided with a first bridge arm screw hole and a second bridge arm screw hole, and the first bridge arm screw hole and the second bridge arm screw hole are used to allow bolts to pass through and be fastened to the upper wire rack of the CNC wire cutting machine.
9. A CNC wire cutting machine tool, characterized in that: It comprises the wire cutting and tightening device as described in any one of claims 1 to 8.