Wire breaking prevention structure of linear cutting machine tool

Abstract

The utility model discloses a wire breaking prevention structure of a wire cutting machine tool, and relates to the technical field of wire cutting equipment. The cutting device comprises a rack and a cutting line, a guide wheel is rotationally connected to the inner wall of the rack through a wheel shaft, a motor is fixedly installed on the outer wall of the rack, the output end of the motor extends into the rack and is fixedly connected with a driving wheel in a sleeved mode, and the cutting line is sequentially connected to the outer side of the guide wheel and the outer side of the driving wheel in a wound mode. Through cooperation of the movable arm, the tensioning wheel and the spring, a cutting line can be tensioned in a self-adaptive mode, the cutting line is prevented from loosening, and when the cutting line is clamped on a workpiece, the movable arm is driven to move upwards to compress the spring through gradual tensioning of the cutting line, so that the cutting line is prevented from loosening. And the pressure testing end face at the bottom of the pressure sensor is extruded through the ejector rod, and when the pressure exceeds a set value, the motor can be stopped through the controller from continuing rotating to tighten the cutting wire, so that cutting wire breakage caused by wire clamping during wire cutting can be prevented.

Description

Technical Field

[0001] This utility model belongs to the technical field of wire cutting equipment, and in particular relates to an anti-wire breakage structure for wire cutting machine tools. Background Technology

[0002] Wire EDM machines, falling under the category of electrical discharge machining, operate on the principle that free positive ions and electrons accumulate in an electric field, quickly forming an ionized conductive channel. During the cutting process, various factors can cause the cutting wire to jam. When this happens, the motor-driven drive wheel further tightens the wire, potentially causing it to break due to excessive force. Therefore, we propose an anti-breakage structure for wire EDM machines. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0004] This utility model relates to an anti-wire breakage structure for a wire EDM machine, comprising a frame and a cutting wire. A guide wheel is rotatably connected to the inner wall of the frame via an axle. A motor is fixedly mounted on the outer wall of the frame, with its output end extending into the frame and fitted with a drive wheel. The cutting wire is sequentially wound around the outer sides of the guide wheel and the drive wheel. A controller is fixedly mounted on the outer wall of the frame above the motor. A fixed base is fixedly connected to the inner wall of the frame, and a movable arm is elastically connected to the fixed base via a spring. A tensioning wheel is rotatably connected to the lower end of the movable arm, and the cutting wire is wound around the outer side of the tensioning wheel. A push rod is fixedly connected to the upper end of the movable arm. A fixed support plate is fixedly connected to the inner side wall of the frame above the fixed base, and a pressure sensor is fixedly mounted at the bottom of the fixed support plate. The upper end of the push rod abuts against the test end face at the bottom of the pressure sensor.

[0005] Preferably, the movable arm movably passes through the fixed base.

[0006] Preferably, a lower limit plate is fixedly installed on the movable arm below the fixed base, and an upper limit plate is fixedly installed on the movable arm above the fixed base.

[0007] Preferably, the spring is sleeved on the movable arm between the fixed seat and the lower limit plate, with the lower end of the spring abutting against the lower limit plate and the upper end of the spring abutting against the fixed seat.

[0008] Preferably, the controller is electrically connected to an external power source via a wire, and the motor and pressure sensor are electrically connected to the controller via wires respectively.

[0009] Preferably, the guide wheel is movably sleeved on one end of the axle via a bearing, and the end of the axle away from the guide wheel is fixedly connected to the inner side wall of the frame.

[0010] This utility model has the following beneficial effects:

[0011] This utility model discloses an anti-wire breakage structure for a wire EDM machine. Through the cooperation of a movable arm, a tensioning wheel, and a spring, the cutting wire can be adaptively tensioned to prevent slack. When the cutting wire gets stuck, the gradual tension of the cutting wire causes the movable arm to move upward and compress the spring. The pressure sensor's bottom pressure test end face is then squeezed by a push rod. When the pressure exceeds a set value, the controller stops the motor from rotating and tightens the cutting wire, thus preventing wire breakage caused by wire jamming during wire EDM. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a top view schematic diagram of the anti-wire breakage structure of a wire cutting machine tool according to the present invention;

[0014] Figure 2 This is a bottom view schematic diagram of the anti-wire breakage structure of a wire cutting machine tool according to the present invention;

[0015] Figure 3 This utility model relates to an anti-wire breakage structure for wire EDM machines. Figure 1 A magnified view of the structure in the middle.

[0016] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0017] 1. Frame; 2. Cutting line; 3. Axle; 4. Guide wheel; 5. Motor; 6. Controller; 7. Fixed base; 8. Movable arm; 81. Lower limit plate; 82. Upper limit plate; 9. Tensioning wheel; 10. Fixed support plate; 11. Pressure sensor; 12. Spring; 13. Top rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 As shown, this utility model provides a technical solution:

[0020] A wire breakage prevention structure for a wire EDM machine includes a frame 1 and a cutting wire 2. A guide wheel 4 is rotatably connected to the inner wall of the frame 1 via a wheel axle 3. The guide wheel 4 is movably sleeved on one end of the wheel axle 3 via a bearing. The end of the wheel axle 3 away from the guide wheel 4 is fixedly connected to the inner side wall of the frame 1. A motor 5 is fixedly installed on the outer wall of the frame 1. The output end of the motor 5 extends into the interior of the frame 1 and is sleeved and fixedly connected to a drive wheel. The cutting wire 2 is sequentially wound around the outer side of the guide wheel 4 and the drive wheel. The motor 5 drives the drive wheel to rotate, which can drive the cutting wire 2 to move at a certain speed, thereby realizing wire EDM processing.

[0021] A controller 6 is fixedly mounted on the outer wall of the frame 1 above the motor 5. The controller 6 is electrically connected to an external power supply via wires. A fixed base 7 is fixedly connected to the inner wall of the frame 1. A movable arm 8 is elastically connected to the fixed base 7 via a spring 12. The movable arm 8 movably passes through the fixed base 7. A lower limit plate 81 is fixedly installed on the movable arm 8 below the fixed base 7, and an upper limit plate 82 is fixedly installed on the movable arm 8 above the fixed base 7. The spring 12 is sleeved on the movable arm 8 between the fixed base 7 and the lower limit plate 81, and the lower end of the spring 12 abuts against the lower limit plate 81. The upper end of spring 12 abuts against the fixed base 7. The lower end of the movable arm 8 is rotatably connected to the tension wheel 9. The cutting line 2 is wrapped around the outside of the tension wheel 9. The upper end of the movable arm 8 is fixedly connected to the push rod 13. A fixed support plate 10 is fixedly connected to the inner wall of the frame 1 above the fixed base 7. A pressure sensor 11 is fixedly installed at the bottom of the fixed support plate 10. The motor 5 and the pressure sensor 11 are electrically connected to the controller 6 through wires. The upper end of the push rod 13 abuts against the test end face at the bottom of the pressure sensor 11. Through the cooperation of the movable arm 8, the tension wheel 9 and the spring 12 The device can adaptively tension the cutting wire 2 to prevent it from slack. When the cutting wire 2 gets stuck, the gradual tension of the cutting wire 2 causes the movable arm 8 to move upward, compressing the spring 12. The push rod 13 then presses against the pressure test end face of the pressure sensor 11. When the pressure exceeds the set value, the controller 6 can stop the motor 5 from rotating and tighten the cutting wire 2, thus preventing the cutting wire 2 from breaking due to wire jamming. During the wire cutting process, when the cutting wire 2 gets stuck, the motor 5 drives the drive wheel to tighten the cutting wire 2. The cutting wire 2 can drive the tension wheel 9 and the movable arm 8 to move upward together and compress the spring 12. The upward movement of the movable arm 8 can drive the push rod 13 to move upward and press against the pressure test end face of the pressure sensor 11. At the same time, the pressure data detected by the pressure sensor 11 can be transmitted to the controller 6 for analysis. When the pressure exceeds the set value, the controller 6 can stop the motor 5 from rotating, preventing the drive wheel from further tightening the cutting wire 2, thus preventing the cutting wire 2 from breaking due to stress.

[0022] Working principle: During use, the motor 5 drives the drive wheel to rotate, which in turn moves the cutting wire 2 at a certain speed. Wire cutting is achieved through the cutting wire 2. During the wire cutting process, when the cutting wire 2 gets stuck, the motor 5 drives the drive wheel to tighten the cutting wire 2. The cutting wire 2 can then drive the tension wheel 9 and the movable arm 8 to move upward together, compressing the spring 12. The upward movement of the movable arm 8 can drive the top rod 13 to move upward, and the top rod 13 can press the pressure test end at the bottom of the pressure sensor 11. At the same time, the pressure data detected by the pressure sensor 11 can be transmitted to the controller 6 for analysis. When the pressure exceeds the set value, the controller 6 can stop the motor 5 from rotating, preventing the drive wheel from further tightening the cutting wire 2, thereby preventing the cutting wire 2 from breaking due to stress.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. A wire breakage prevention structure for a wire EDM machine, comprising a frame (1) and a cutting wire (2), wherein a guide wheel (4) is rotatably connected to the inner wall of the frame (1) via a wheel axle (3), a motor (5) is fixedly mounted on the outer wall of the frame (1), the output end of the motor (5) extends into the interior of the frame (1) and is fitted with a drive wheel, the cutting wire (2) is sequentially wound around the outer sides of the guide wheel (4) and the drive wheel, and a controller (6) is fixedly mounted on the outer wall of the frame (1) above the motor (5), characterized in that: A fixed seat (7) is fixedly connected to the inner wall of the frame (1). A movable arm (8) is elastically connected to the fixed seat (7) via a spring (12). A tension wheel (9) is rotatably connected to the lower end of the movable arm (8). The cutting line (2) is wrapped around the outside of the tension wheel (9). A top rod (13) is fixedly connected to the upper end of the movable arm (8). A fixed support plate (10) is fixedly connected to the inner wall of the frame (1) above the fixed seat (7). A pressure sensor (11) is fixedly installed at the bottom of the fixed support plate (10). The upper end of the top rod (13) abuts against the test end face at the bottom of the pressure sensor (11).

2. The anti-wire breakage structure for a wire EDM machine tool according to claim 1, characterized in that, The movable arm (8) moves through the fixed seat (7).

3. The anti-wire breakage structure for a wire EDM machine tool according to claim 2, characterized in that, A lower limit plate (81) is fixedly installed on the movable arm (8) below the fixed base (7), and an upper limit plate (82) is fixedly installed on the movable arm (8) above the fixed base (7).

4. The anti-wire breakage structure for a wire EDM machine tool according to claim 3, characterized in that, The spring (12) is sleeved on the movable arm (8) between the fixed seat (7) and the lower limit plate (81). The lower end of the spring (12) abuts against the lower limit plate (81), and the upper end of the spring (12) abuts against the fixed seat (7).

5. The anti-wire breakage structure for a wire EDM machine tool according to claim 1, characterized in that, The controller (6) is electrically connected to an external power source via wires, and the motor (5) and pressure sensor (11) are electrically connected to the controller (6) via wires respectively.

6. The anti-wire breakage structure for a wire EDM machine tool according to claim 1, characterized in that, The guide wheel (4) is movably sleeved on one end of the axle (3) via a bearing, and the end of the axle (3) away from the guide wheel (4) is fixedly connected to the inner wall of the frame (1).

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