Medium-speed wire cutting device with wire tensioning mechanism

Abstract

The invention discloses a medium-speed wire cutting device with a wire tensioning mechanism, and relates to the technical field of medium-speed wire cutting, the medium-speed wire cutting device comprises a machine tool, the upper surface of the machine tool is fixedly connected with a first mounting plate, a second mounting plate and a portal frame in sequence from front to back, the first mounting plate is provided with a wire feeding assembly, the second mounting plate is provided with a wire tensioning assembly, and the portal frame is provided with a wire tensioning mechanism. An adjusting assembly is arranged between the portal frame and the wire tensioning assembly. According to the medium-speed wire cutting device with the wire tensioning mechanism, medium-speed wire cutting is conducted on a workpiece by arranging the wire walking assembly, when the wire walking assembly conducts cutting, the adjusting assembly pulls the wire tensioning assembly passively, the wire tensioning assembly adjusts a wire in a self-adaptive mode, the tension of the wire is uniform and constant, and the wire cutting efficiency is improved. And the influence on processing is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medium-speed wire cutting, and in particular to a medium-speed wire cutting device with a wire tensioning mechanism. Background Art

[0002] Wire cutting is an important term in wire EDM, which refers to the way the metal wire used as the electrode moves during the machining process in the wire EDM machine. Wire EDM is a technology that uses a continuously moving wire as an electrode to perform pulsed spark discharge to erode metal and cut into shape on the workpiece.

[0003] Medium wire cutting does not mean that the wire speed is between high speed and low speed, but a compound wire cutting wire cutting machine. The wire cutting principle is to use thick electrode wire at high speed during rough machining, and use thin electrode wire at low speed during fine machining. In this way, the operation is relatively stable with little jitter, and the errors caused by material deformation and molybdenum wire loss are reduced through multiple cutting, so that the processing quality is relatively improved.

[0004] Since medium-speed wire cutting requires frequent adjustment of the working state and switching between high-speed and low-speed wire cutting, the wire tension needs to be constantly changed according to the working state during operation so that the wire tension can always remain uniform and constant, so as to smoothly and accurately cut the workpiece by wire. Moreover, when performing high-speed wire cutting, if the wire tension is uneven or changes too much, it may cause the wire to break. Therefore, it is also necessary to protect the wire in time during high-speed wire cutting to prevent the wire from breaking. Summary of the invention

[0005] The object of the present invention is to provide a medium-wire cutting device with a wire tensioning mechanism to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A medium-speed wire cutting device with a wire tensioning mechanism comprises a machine tool, a first mounting plate, a second mounting plate and a gantry are fixedly connected to the upper surface of the machine tool in sequence from front to back, a wire traveling assembly is arranged on the first mounting plate, a wire tensioning assembly is arranged on the second mounting plate, and an adjustment assembly is arranged between the gantry and the wire tensioning assembly;

[0008] When the wire-travelling assembly performs wire-travelling cutting, the adjusting assembly passively pulls the wire-tensioning assembly, so that the wire-tensioning assembly adaptively adjusts the wire.

[0009] As a further preferred solution in the embodiment of the present invention, a through hole is provided in the first mounting plate, and the wire running assembly includes a differential shaft rotatably connected inside the through hole, and one end of the differential shaft is connected to a first wire running wheel.

[0010] As a further preferred scheme in the embodiment of the present invention, the wire walking assembly also includes a clamping bolt threadedly connected to the other end of the differential shaft, and a clamping bearing is rotatably connected to the middle part of the differential shaft, and a clamping spring is connected between the clamping bearing and the clamping bolt, and the clamping spring is arranged on the outside of the differential shaft, and a differential wheel, a friction wheel and a clamping wheel are installed in sequence from left to right between the first mounting plate and the clamping bearing, and the differential wheel, friction wheel and clamping wheel are all rotatably matched with the differential shaft.

[0011] As a further preferred scheme in the embodiment of the present invention, a wire tensioning track is provided inside the second mounting plate, and the wire tensioning assembly includes a wire tensioning shaft slidably connected inside the wire tensioning track, and a wire tensioning wheel is connected to the surface of the wire tensioning shaft, and mounting frames are rotatably connected to both ends of the wire tensioning shaft.

[0012] As a further preferred scheme in the embodiment of the present invention, a third mounting plate is fixedly connected to the upper surface of the second mounting plate, a wire transport motor is provided on one side surface of the third mounting plate, a circular hole is provided on the third mounting plate, and the output end of the wire transport motor is connected to the second wire feeding wheel through the circular hole.

[0013] As a further preferred solution in the embodiment of the present invention, an electrode wire is rotatably connected to the surface of the second wire-feeding wheel, one end of the electrode wire is rotatably connected to the surface of the wire tensioning wheel, and the other end of the electrode wire is rotatably connected to the first wire-feeding wheel.

[0014] As a further preferred scheme in the embodiment of the present invention, the adjustment component includes a first connecting rope connected to one end of the mounting frame, and one end of the first connecting rope is connected to the adjustment frame, and the adjustment frame is rotatably connected to an adjustment shaft inside, and the surface of the adjustment shaft is connected to an adjustment wheel, and the other end of the adjustment frame is connected to a second connecting rope.

[0015] As a further preferred solution in the embodiment of the present invention, the adjustment assembly also includes a connecting frame connected to the surface of one side of the gantry, and the first guide wheel and the second guide wheel are rotatably connected inside the connecting frame.

[0016] As a further preferred scheme in the embodiment of the present invention, the other end of the second connecting rope is connected to a counterweight frame after passing through the first guide wheel, the adjustment wheel and the second guide wheel in sequence, a counterweight groove is provided on the surface of one side of the machine tool, the counterweight frame is slidably connected to the counterweight groove, and a counterweight block is provided in the counterweight frame.

[0017] As a further preferred solution in the embodiment of the present invention, a processing groove is provided on the upper surface of the machine tool, and a base is fixedly connected to the lower surface of the machine tool.

[0018] In the above technical solution, the medium-speed wire cutting device with a wire tensioning mechanism provided by the present invention has the following beneficial effects:

[0019] The present invention performs mid-wire cutting on a workpiece by arranging a wire-feeding assembly. When the wire-feeding assembly is cutting, the adjusting assembly passively pulls the wire-tensioning assembly, so that the wire-tensioning assembly adaptively adjusts the wire, making the wire tension uniform and constant, thereby reducing the impact on processing.

[0020] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0021] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application 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 recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the overall structure from another perspective provided by an embodiment of the present invention;

[0025] Figure 3 The embodiment of the present invention provides Figure 2 A is an enlarged structural diagram;

[0026] Figure 4 The embodiment of the present invention provides Figure 2 The enlarged structural diagram at B in FIG.

[0027] Figure 5 A schematic diagram of a local structure provided by an embodiment of the present invention;

[0028] Figure 6 The embodiment of the present invention provides Figure 5 The enlarged structural diagram at C in FIG.

[0029] Figure 7 The embodiment of the present invention provides Figure 5 The enlarged structural diagram at D in FIG.

[0030] Figure 8 The embodiment of the present invention provides Figure 5 The enlarged structural diagram at E in FIG.

[0031] Fig. 9An exploded view of a wire-travel assembly provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 100, machine tool; 101, machining groove; 102, counterweight groove; 103, base; 200, first mounting plate; 201, first wire wheel; 202, differential wheel; 203, friction wheel; 204, clamping wheel; 205, clamping bearing; 207, clamping spring; 208, clamping bolt; 209, differential shaft; 300, second mounting plate; 301, wire track; 302, wire shaft; 303, tension Wire wheel; 304, mounting frame; 400, third mounting plate; 401, wire transport motor; 402, second wire wheel; 403, electrode wire; 500, adjusting frame; 501, adjusting shaft; 502, adjusting wheel; 503, first connecting rope; 504, second connecting rope; 600, gantry; 601, connecting frame; 602, first guide wheel; 603, second guide wheel; 604, counterweight frame; 605, counterweight block. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0035] See also Figure 1 - Fig. 9 A medium-speed wire cutting device with a wire tensioning mechanism comprises a machine tool 100, a first mounting plate 200, a second mounting plate 300 and a gantry 600 are fixedly connected to the upper surface of the machine tool 100 from front to back in sequence, a wire traveling assembly is arranged on the first mounting plate 200, a wire tensioning assembly is arranged on the second mounting plate 300, and an adjustment assembly is arranged between the gantry 600 and the wire tensioning assembly;

[0036] When the wire-feeding assembly performs wire-feeding cutting, the adjusting assembly passively pulls the wire-tensioning assembly, so that the wire-tensioning assembly adaptively adjusts the wire.

[0037] The present invention performs mid-wire cutting on a workpiece by arranging a wire-feeding assembly. When the wire-feeding assembly is cutting, the adjusting assembly passively pulls the wire-tensioning assembly, so that the wire-tensioning assembly adaptively adjusts the wire, making the wire tension uniform and constant, thereby reducing the impact on processing.

[0038] In an embodiment further provided by the present invention, a through hole is provided in the first mounting plate 200 , and the wire running assembly includes a differential shaft 209 rotatably connected inside the through hole, and one end of the differential shaft 209 is connected to the first wire running wheel 201 .

[0039] In the embodiment further provided by the present invention, the wire walking assembly also includes a clamping bolt 208 threadedly connected to the other end of the differential shaft 209, and a clamping bearing 205 is rotatably connected to the middle part of the differential shaft 209, and a clamping spring 207 is connected between the clamping bearing 205 and the clamping bolt 208, and the clamping spring 207 is arranged on the outside of the differential shaft 209, and the differential wheel 202, friction wheel 203 and clamping wheel 204 are installed from left to right between the first mounting plate 200 and the clamping bearing 205, and the differential wheel 202, friction wheel 203 and clamping wheel 204 are all rotatably matched with the differential shaft 209.

[0040] Furthermore, the friction wheel 203 is made of felt or other materials with friction damping, so that there is a certain damping between the friction wheel 203 and the slip shaft 209.

[0041] Specifically, when the first wire wheel 201 rotates, it drives the slip shaft 209 to rotate. When the speed of the first wire wheel 201 is too fast, the differential wheel 202 is overloaded. The first wire wheel 201 and the differential wheel 202 rotate asynchronously, causing the slip shaft 209 to slip inside the differential wheel 202, thereby preventing the electrode wire 403 from breaking.

[0042] Furthermore, the clamping bolt 208 is rotated to move and change its position on the differential shaft 209, so that the clamping bolt 208 stretches or pushes the clamping spring 207, thereby changing the clamping force between the clamping bearing 205 and the clamping wheel 204, thereby changing the deformation size of the friction wheel 203, causing the damping between the friction wheel 203 and the differential shaft 209 to change, thereby changing the overload limit and operating in accordance with the wire feeding speed of the device.

[0043] In an embodiment further provided by the present invention, a wire tensioning track 301 is provided inside the second mounting plate 300, and the wire tensioning assembly includes a wire tensioning shaft 302 slidably connected inside the wire tensioning track 301, and a wire tensioning wheel 303 is connected to the surface of the wire tensioning shaft 302, and mounting frames 304 are rotatably connected to both ends of the wire tensioning shaft 302.

[0044] Furthermore, the wire tensioning wheel 303 rotates on the mounting frame 304 to cooperate with the wire feeding.

[0045] Furthermore, the wire tensioning wheel 303 slides in the wire tensioning track 301 to adjust the position so as to adjust the tension of the electrode wire 403 .

[0046] In an embodiment further provided by the present invention, a third mounting plate 400 is fixedly connected to the upper surface of the second mounting plate 300, a wire transport motor 401 is provided on one side surface of the third mounting plate 400, a circular hole is provided on the third mounting plate 400, and the output end of the wire transport motor 401 is connected to the second wire feeding wheel 402 through the circular hole.

[0047] In an embodiment further provided by the present invention, an electrode wire 403 is rotatably connected to the surface of the second wire wheel 402 , one end of the electrode wire 403 is rotatably connected to the surface of the tensioning wheel 303 , and the other end of the electrode wire 403 is rotatably connected to the first wire wheel 201 .

[0048] Specifically, the wire transport motor 401 drives the second wire feeding wheel 402 to rotate, and drives the first wire feeding wheel 201 to rotate under the drive of the electrode wire 403, so that the electrode wire 403 is fed.

[0049] Furthermore, the wire tensioning wheel 303 is disposed on the electrode wire 403 between the first wire feeding wheel 201 and the second wire feeding wheel 402 to adjust the tension of the electrode wire 403 .

[0050] In an embodiment further provided by the present invention, the adjustment component includes a first connecting rope 503 connected to one end of the mounting frame 304, and one end of the first connecting rope 503 is connected to the adjustment frame 500, and the adjustment frame 500 is internally rotatably connected to an adjustment shaft 501, and the surface of the adjustment shaft 501 is connected to an adjustment wheel 502, and the other end of the adjustment frame 500 is connected to a second connecting rope 504.

[0051] Specifically, the adjusting wheel 502 rotates on the adjusting frame 500 .

[0052] In an embodiment further provided by the present invention, the adjustment assembly also includes a connecting frame 601 connected to a surface of one side of the gantry 600 , and the connecting frame 601 is internally rotatably connected with a first guide wheel 602 and a second guide wheel 603 .

[0053] Furthermore, the first guide wheel 602 and the second guide wheel 603 reduce the weight required for transmission and make the transmission smoother.

[0054] In an embodiment further provided by the present invention, the other end of the second connecting rope 504 is connected to a counterweight frame 604 after passing through the first guide wheel 602, the adjusting wheel 502 and the second guide wheel 603 in sequence. A counterweight groove 102 is provided on the surface of one side of the machine tool 100. The counterweight frame 604 is slidably connected to the counterweight groove 102, and a counterweight block 605 is provided inside the counterweight frame 604.

[0055] Furthermore, depending on whether the processing type to be performed is high-speed wire cutting or low-speed wire cutting, the counterweight block 605 is increased or decreased in the counterweight frame 604. The change in the weight of the counterweight block 605 in the counterweight frame 604 will synchronously change the horizontal position of the adjusting wheel 502 to change the tension of the electrode wire 403.

[0056] Furthermore, after the second connecting rope 504 pulls the adjusting frame 500 , it first rotates along the first guide wheel 602 , then rotates along the adjusting wheel 502 , and then rotates through the second guide wheel 603 , and is connected to the counterweight frame 604 .

[0057] Specifically, the counterweight block 605 is placed in the counterweight frame 604, and the counterweight frame 604 slides downward in the counterweight slot 102, thereby driving the second connecting rope 504 to move, so that the second connecting rope 504 pulls the adjusting frame 500 after passing through the first guide wheel 602 and the second guide wheel 603 for smooth force reduction transmission, so that the adjusting frame 500 moves horizontally, thereby pulling the tensioning wheel 303 under the action of the first connecting rope 503, so that it slides and adjusts its position in the tensioning track 301 to adjust the tension of the electrode wire 403.

[0058] In an embodiment further provided by the present invention, a machining groove 101 is provided on the upper surface of the machine tool 100 , and a base 103 is fixedly connected to the lower surface of the machine tool 100 .

[0059] In the present invention, the workpiece is first placed in the processing groove 101, and then the electrode wire 403 is wound around the surfaces of the first wire wheel 201, the second wire wheel 402 and the tensioning wheel 303. Then, according to whether the processing type is high-speed wire or low-speed wire, the clamping bolt 208 is rotated to move and change its position on the differential shaft 209, so that the clamping bolt 208 stretches or pushes the clamping spring 207, thereby changing the clamping force between the clamping bearing 205 and the clamping wheel 204, thereby changing the deformation size of the friction wheel 203, so that the damping between the friction wheel 203 and the differential shaft 209 changes, thereby changing the overload limit; and adding a counterweight block 605 of appropriate weight to the counterweight frame 604, so that the counterweight frame 604 slides downward in the counterweight groove 102, thereby driving the second connecting rope 504 to move, so that the second connecting rope 504 passes through the first guide wheel 602 and the second guide wheel 603 after the smooth force reduction transmission. , pull the adjustment frame 500 to make the adjustment frame 500 move horizontally, so that the tensioning wheel 303 is pulled under the action of the first connecting rope 503, so that it slides and adjusts its position in the tensioning track 301 to adjust the tension of the electrode wire 403; start the wire transport motor 401 to drive the second wire wheel 402 to rotate, and drive the first wire wheel 201 to rotate under the drive of the electrode wire 403, so that the electrode wire 403 is wired, and the tensioning wheel 303 rotates on the mounting frame 304 to cooperate with the wire running; when the first wire wheel 201 rotates, it drives the slip shaft 209 to rotate. When the speed of the first wire wheel 201 is too fast, the slip wheel 202 is overloaded, and the first wire wheel 201 and the slip wheel 202 rotate asynchronously, so that the slip shaft 209 slips in the slip wheel 202 to prevent the electrode wire 403 from breaking; the electrode wire 403 runs on the workpiece and cuts the workpiece, so that the workpiece is processed into a part with a complex shape.

[0060] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A medium-speed wire cutting device with a wire tensioning mechanism, comprising a machine tool (100), characterized in that: The upper surface of the machine tool (100) is fixedly connected with a first mounting plate (200), a second mounting plate (300) and a gantry (600) in sequence from front to back, the first mounting plate (200) is provided with a wire feeding assembly, the second mounting plate (300) is provided with a wire tensioning assembly, and an adjustment assembly is provided between the gantry (600) and the wire tensioning assembly; When the wire-travelling assembly performs wire-travelling cutting, the adjusting assembly passively pulls the wire-tensioning assembly, so that the wire-tensioning assembly adaptively adjusts the wire.

2. A medium-speed wire cutting device with a wire tensioning mechanism according to claim 1, characterized in that: A through hole is provided in the first mounting plate (200), and the wire running assembly comprises a differential shaft (209) rotatably connected inside the through hole, and one end of the differential shaft (209) is connected to a first wire running wheel (201).

3. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 2, characterized in that: The wire walking assembly also includes a clamping bolt (208) threadedly connected to the other end of the differential shaft (209), and a clamping bearing (205) is rotatably connected to the middle part of the differential shaft (209), and a clamping spring (207) is connected between the clamping bearing (205) and the clamping bolt (208), and the clamping spring (207) is arranged outside the differential shaft (209), and a differential wheel (202), a friction wheel (203) and a clamping wheel (204) are installed in sequence from left to right between the first mounting plate (200) and the clamping bearing (205), and the differential wheel (202), the friction wheel (203) and the clamping wheel (204) are all rotatably matched with the differential shaft (209).

4. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 3, characterized in that: A wire tensioning track (301) is provided inside the second mounting plate (300), and the wire tensioning assembly comprises a wire tensioning shaft (302) slidably connected inside the wire tensioning track (301), a wire tensioning wheel (303) is connected to the surface of the wire tensioning shaft (302), and mounting frames (304) are rotatably connected at both ends of the wire tensioning shaft (302).

5. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 4, characterized in that: The upper surface of the second mounting plate (300) is fixedly connected to a third mounting plate (400), a wire-moving motor (401) is provided on one side surface of the third mounting plate (400), a circular hole is provided on the third mounting plate (400), and the output end of the wire-moving motor (401) is connected to a second wire-moving wheel (402) through the circular hole.

6. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 5, characterized in that: The surface of the second wire-moving wheel (402) is rotatably connected to an electrode wire (403), one end of the electrode wire (403) is rotatably connected to the surface of the wire tensioning wheel (303), and the other end of the electrode wire (403) is rotatably connected to the first wire-moving wheel (201).

7. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 6, characterized in that: The adjustment assembly comprises a first connecting rope (503) connected to one end of a mounting frame (304), one end of the first connecting rope (503) is connected to an adjustment frame (500), an adjustment shaft (501) is rotatably connected inside the adjustment frame (500), an adjustment wheel (502) is connected to the surface of the adjustment shaft (501), and the other end of the adjustment frame (500) is connected to a second connecting rope (504).

8. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 7, characterized in that: The adjustment assembly further comprises a connecting frame (601) connected to a surface of one side of the gantry (600), and a first guide wheel (602) and a second guide wheel (603) are rotatably connected inside the connecting frame (601).

9. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 8, characterized in that: The other end of the second connecting rope (504) is connected to a counterweight frame (604) after passing through the first guide wheel (602), the adjusting wheel (502) and the second guide wheel (603) in sequence. A counterweight groove (102) is provided on one side surface of the machine tool (100). The counterweight frame (604) is slidably connected to the counterweight groove (102). A counterweight block (605) is provided inside the counterweight frame (604).

10. The medium-speed wire cutting device with a wire tensioning mechanism according to claim 9, characterized in that: The upper surface of the machine tool (100) is provided with a processing groove (101), and the lower surface of the machine tool (100) is fixedly connected with a base (103).

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