Arc Cutting Resistance Device and Test Method for Aviation Wires

Abstract

This invention provides an arc-resistant cutting device and testing method for aviation wires. The device includes a drive assembly and a cutting assembly. The slide of the drive assembly is connected to the slide of the cutting assembly. Terminal blocks are provided on both sides of the cutting assembly. The drive assembly, cutting assembly, and terminal blocks are all mounted on a base. The positive and negative terminals on the terminal blocks are connected to the wire harness under test via wires. This invention uses a crank-slider mechanism to convert the rotation of the fixed base into the linear movement of the slide. The eccentricity between the connecting rod and the fixed base is adjusted by the screw and the adjusting slider, thereby adjusting the cutting stroke. The cutting depth of the wire harness under test can be fed back in real time by a laser sensor and a light target. The cutting blade is adjusted to a suitable height according to the specifications of the wire harness under test by the cooperation of the guide post and the linear bearing. Through the coordinated setting of the drive assembly and the cutting assembly, automatic cutting of the wire harness under test is achieved, effectively improving the cutting accuracy and efficiency of the wire harness under test.

Description

Technical Field

[0001] This invention relates to the field of wire testing technology, specifically to an arc-cutting resistant device for aviation wires and its testing method. Background Technology

[0002] Aviation wires are mainly used in aviation, aerospace, satellites and aircraft due to their light weight, high temperature resistance and high wear resistance. Before application, the arc resistance performance of the insulation of aviation wires needs to be tested.

[0003] Patent document CN113926959A discloses a wire and cable cutting device, which includes a support plate, a connecting frame, a first connecting shaft, and bushings. The connecting frame is installed on the rear side of the support plate, and the first connecting shaft is rotatably mounted on the upper part of the connecting frame. Bushings are symmetrically arranged on the left and right sides of the first connecting shaft. The operator can wind the wire and cable onto the bushings, and the wire and cable can be automatically fed under the guidance of pulleys and the transmission of a flat belt, without the need for manual pulling and feeding. The operator can control the height of the rodless cylinder to raise and lower according to different needs of the wire and cable, so that the cutter and the clamping plate cooperate to cut the wire and cable to the corresponding fixed length.

[0004] In existing arc-resistant cutting testing devices for aviation wires, the mechanical cutting device is complex to manufacture, and its mechanical stop needs to be adjusted frequently to accommodate different test pieces. Its spring structure struggles to maintain long-term elasticity, and the cutting table, supported by a metal pillar, wobbles during high-speed cutting due to component clearance issues. This requires additional operator intervention to stabilize the cutting process. Furthermore, it can only cut cable trays of the same specifications, and the cutting head is too high to be adjusted, resulting in incomplete cuts at the lower end when cutting smaller wire harnesses. Therefore, it is necessary to design an arc-resistant cutting device and testing method for aviation wires. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides an arc-resistant cutting device and testing method for aviation wires. It employs a crank-slider mechanism to convert the rotation of the fixed base into the linear movement of the slide table. The eccentricity of the connecting rod is adjusted by a screw and an adjusting slider, thereby regulating the cutting stroke. A laser sensor and a light target provide real-time feedback on the cutting depth of the wire harness under test. The cutting blade is adjusted to a suitable height based on the wire harness under test, with the cooperation of a guide post and a linear bearing. Through the coordinated design of the drive assembly and the cutting assembly, the cutting of aviation wires is achieved, effectively improving the cutting accuracy and efficiency of the wire harness under test.

[0006] This invention provides an arc-resistant cutting device for aviation wires, comprising a drive assembly and a cutting assembly. The drive assembly includes a drive motor, a fixed base, a screw, an adjusting slider, a locking member, a connecting rod, and a slide. The first end face of the fixed base is connected to the output shaft of the drive motor, which is mounted on a base plate. A groove is formed in the middle of the second end face of the fixed base, and the screw is disposed in the groove. The adjusting slider is fitted onto the screw and is kinetically connected to it. A groove is formed on the side end face of the fixed base, and the locking member passes through the groove and is threadedly connected to a threaded hole on the adjusting slider. The first end of the connecting rod is rotatably connected to the adjusting slider, and the second end of the connecting rod is rotatably connected to the slide. The cutting assembly includes a slide table, a slide rail, and a guide post. The system comprises a linear bearing, a guide block, a cutting blade, a counterweight, a light target, a laser sensor, and a cutting table. The bottom of the cutting table is slidably connected to a slide rail, which is mounted on a base. A guide post is vertically mounted on the cutting table. The guide block is fitted onto the guide post and slidably connected to the guide post via the linear bearing. The cutting blade is fixedly connected to the middle of the guide block. The counterweight is located at both ends of the cutting blade. The light target is fixedly mounted at the bottom of the guide block. The laser sensor is located above the light target and is mounted on the base via a support frame. The cutting table is located below the cutting blade. The slide of the drive assembly is connected to the slide of the cutting assembly. Terminal blocks are provided on both sides of the cutting assembly. The drive assembly, the cutting assembly, and the terminal blocks are all mounted on the base.

[0007] Preferably, the terminal block is provided with a positive terminal and a negative terminal, which are respectively connected to the wire harness under test through wires. The wire harness under test is located below the cutting blade, and the cutting blade is pressed against the wire harness under test by the gravity of the counterweight.

[0008] Preferably, the drive motor drives the fixed base to rotate, and the eccentric distance of the connecting rod is adjusted by the screw and the adjusting slider. With the cooperation of the screw and the connecting rod, the rotational motion of the fixed base is converted into the linear sliding of the slide table on the slide rail, adjusting the cutting blade to above the wire harness to be tested. The cutting blade is slidably connected to the guide post through the guide block and adjusted to a suitable height according to the specifications of the wire harness to be tested. During cutting, the laser sensor and the light target provide real-time feedback on the cutting depth of the wire harness to be tested.

[0009] Preferably, the guide post is arranged perpendicular to the slide rail, and the cutting blade is arranged parallel to the slide rail.

[0010] Preferably, the slide rail is arranged perpendicular to the axial direction of the wire harness to be tested.

[0011] Preferably, the laser sensor is connected to the input terminal of the host computer controller, and the output terminal of the host computer controller is electrically connected to the drive motor.

[0012] Preferably, the cutting blade is made of an alloy material.

[0013] A second aspect of the present invention provides a test method for the aforementioned arc-cutting resistant device for aviation wires, comprising the following steps:

[0014] S1. Input the parameter data of the wire harness to be tested into the host computer system and obtain the maximum cutting depth △H;

[0015] S2. In the cutting assembly, the laser beam of the laser sensor is projected onto the light target. When the cutting blade cuts the wire bundle to be tested, the guide block slides on the guide post through the linear bearing. The host computer obtains the moving distance through the distance measured by the laser sensor.

[0016] S3. The host computer obtains the initial position data H1 of the laser sensor;

[0017] S4. Start the cutting device, drive the motor to rotate the fixed seat, and then the fixed seat drives the slide table to slide back and forth on the slide rail through the connecting rod, so that the cutting blade cuts the wire harness to be tested under the gravity of the counterweight.

[0018] S5. During the cutting operation, the host computer monitors the real-time position data H2 of the laser sensor and compares it with the initial position data H1 to obtain the current cutting depth △H. 1 Specifically:

[0019] △H 1 =|H2-H1|;

[0020] Determine the current cutting depth △H 1 Has the maximum limit △H been reached? If the current cutting depth △H 1 If the current cutting depth is less than the maximum limit △H, the cutting blade continues to cut the wire harness under test; if the current cutting depth △H 1 If the value is greater than or equal to the maximum limit △H, the cutting operation is stopped, a stop command is sent to the host computer, and the current cutting depth is marked as the maximum cutting depth value.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The present invention provides an arc-resistant cutting device for aviation wires, which uses a crank-slider mechanism to convert the rotation of the fixed base into the linear movement of the slide table. The eccentricity of the connecting rod is adjusted by the screw and the adjusting slider, thereby adjusting the cutting stroke. The cutting frequency is adjusted by adjusting the speed of the drive motor, thereby realizing the automatic cutting of the wire harness under test and effectively improving the cutting accuracy of the wire harness under test.

[0023] 2. The arc-resistant cutting device for aviation wires of the present invention can provide real-time feedback on the cutting depth of the wire harness through a laser sensor and a light target. The cutting blade can be adjusted to a suitable height according to the wire harness to be tested through the cooperation of the guide post and the linear bearing. The counterweight can effectively prevent the spring force from failing. Through the cooperation of the drive component and the cutting component, the wire harness to be tested can be effectively cut, which effectively improves the cutting efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the aviation wire arc-resistant cutting device of the present invention;

[0025] Figure 2 This is an isometric view of the arc-resistant cutting device for aviation wires of the present invention;

[0026] Figure 3 This is a side view schematic diagram of the arc-resistant cutting device for aviation wires of the present invention;

[0027] Figure 4 This is a partially enlarged schematic diagram of the arc-resistant cutting device for aviation wires of the present invention;

[0028] Figure 5 This is a flowchart of the test method for the arc-resistant cutting device for aviation wires of the present invention.

[0029] Key reference numerals:

[0030] Drive assembly 1, drive motor 11, fixed base 12, slide 121, groove 122, screw 13, adjusting slider 14, locking part 15, connecting rod 16, slide block 17, cutting assembly 2, slide table 201, slide rail 202, guide post 203, linear bearing 204, guide block 205, cutting blade 206, counterweight 207, light target 208, laser sensor 209, cutting table 210, terminal block 3, positive terminal 31, negative terminal 32, base 4, wire harness under test 5. Detailed Implementation

[0031] To fully describe the technical content, structural features, objectives, and effects of this invention, a detailed description will be provided below in conjunction with the accompanying drawings.

[0032] This invention relates to an arc-resistant cutting device for aviation wires, such as... Figure 1 and Figure 2As shown, it includes a drive assembly 1 and a cutting assembly 2. The drive assembly 1 includes a drive motor 11, a fixed base 12, a screw 13, an adjusting slider 14, a locking member 15, a connecting rod 16, and a slide block 17. The first end face of the fixed base 12 is connected to the output shaft of the drive motor 11. The drive motor 11 is mounted on the base plate 4. A groove 121 is formed in the middle of the second end face of the fixed base 12. The screw 13 is disposed in the groove 121 of the fixed base 12. The adjusting slider 14 is fitted onto the screw 13 and is connected to the screw 13 in a transmission manner. A groove 122 is formed on the side end face of the fixed base 12. The locking member 15 passes through the groove 122 and engages with the adjusting slider 17. The threaded hole on block 14 is threadedly connected, the first end of connecting rod 16 is rotatably connected to adjusting slider 14, and the second end of connecting rod 16 is rotatably connected to slide 17; the slide 17 of drive assembly 1 is connected to slide 201 of cutting assembly 2, and terminal blocks 3 are provided on both sides of cutting assembly 2. The terminal blocks 3 are provided with positive terminal 31 and negative terminal 32. The positive terminal 31 and negative terminal 32 are respectively connected to the wire harness 5 to be tested through wires. The wire harness 5 to be tested is located below the cutting blade 206. The cutting blade 206 is pressed against the wire harness 5 to be tested under the gravity of counterweight block 207. Drive assembly 1, cutting assembly 2 and terminal blocks 3 are all set on base 4.

[0033] like Figure 3 and Figure 4As shown, the cutting assembly 2 includes a slide table 201, a slide rail 202, a guide post 203, a linear bearing 204, a guide block 205, a cutting blade 206, a counterweight 207, a light target 208, a laser sensor 209, and a cutting table 210. The bottom of the slide table 201 is slidably connected to the slide rail 202, which is mounted on the base 4. The guide post 203 is vertically mounted on the slide table 201. The guide block 206 is fitted onto the guide post 203, and the guide block 205 is slidably connected to the guide post 203 via the linear bearing 204. The cutting blade 206 is fixedly connected to the middle of the guide block 205. The counterweight 207 is located at both ends of the cutting blade 206. The cutting blade 206 is made of alloy material. The light target 208 is fixedly mounted on the bottom of the guide block 205. The laser sensor 209 is located above the light target 208 and is mounted on the base 4 via a support frame. The cutting table 210 is located below the cutting blade 206. The guide post 203 is perpendicular to the slide rail 202, and the cutting blade 206 is arranged parallel to the slide rail 202. The arrangement direction of the slide rail 202 is perpendicular to the axis of the wire harness 5 to be tested. The laser sensor 209 is connected to the input terminal of the host computer controller, and the output terminal of the host computer controller is electrically connected to the drive motor 11. The drive motor 11 drives the fixed base 12 to rotate. The eccentric distance of the connecting rod 16 is adjusted by the screw 13 and the adjusting slider 14. With the cooperation of the screw 13 and the connecting rod 16, the rotational motion of the fixed base 12 is converted into the linear sliding of the slide table 201 on the slide rail 202, adjusting the cutting blade 206 above the wire harness 5 to be tested. The cutting blade 206 is slidably connected to the guide post 203 through the guide block 205 and adjusted to a suitable height according to the specifications of the wire harness 5 to be tested. During cutting, the laser sensor 209 and the light target 208 provide real-time feedback on the cutting depth of the wire harness to be tested.

[0034] like Figure 5 As shown, the test method for an arc-cutting resistant device for aviation wires includes the following steps:

[0035] S1. Input the parameter data of the wire harness 5 to be tested into the host computer system and obtain the maximum cutting depth △H;

[0036] S2. The laser beam of the laser sensor 209 in the cutting assembly 2 is projected onto the light target 208. When the cutting blade 206 cuts the wire bundle 5 to be tested, the guide block 205 slides on the guide post 203 through the linear bearing 204. The host computer obtains the moving distance through the distance measured by the laser sensor 209.

[0037] S3. The host computer obtains the initial position data H1 of the laser sensor 209;

[0038] S4. Start the cutting device, drive the motor 11 to drive the fixed seat 12 to rotate, and then the fixed seat 12 drives the slide table 201 to slide back and forth on the slide rail 202 through the connecting rod 16, so that the cutting blade 206 cuts the wire harness 5 to be tested under the gravity of the counterweight 207.

[0039] S5. During the cutting operation, the host computer monitors the real-time position data H2 of the laser sensor 209 and compares it with the initial position data H1 to obtain the current cutting depth △H. 1 Specifically:

[0040] △H 1 =|H2-H1|;

[0041] Determine the current cutting depth △H 1 Has the maximum limit △H been reached? If the current cutting depth △H 1 If the current cutting depth is less than the maximum limit △H, then the cutting blade 206 continues to cut the wire harness 5 to be tested; if the current cutting depth △H 1 If the value is greater than or equal to the maximum limit △H, the cutting operation is stopped, a stop command is sent to the host computer, and the current cutting depth is marked as the maximum cutting depth value.

[0042] The following describes the arc-resistant cutting device for aviation wires and its testing method of the present invention in further detail with reference to embodiments:

[0043] The test method for the arc-cut resistant device for aviation wires of the present invention is described below:

[0044] This test requires that the maximum cutting depth not exceed 1 / 2 of the diameter of the wire harness 5 under test, and the minimum cutting stroke required for the test is 15mm. Adjust the screw 13, drive the motor 11 to drive the fixed seat 12 to rotate, and the slide table 201 moves a distance greater than 15mm on the slide rail 202. After adjusting to the appropriate position, the screw 13 is fixed on the fixed seat 12 by the locking part 15.

[0045] S1. Fix the wire harness 5 to be tested on the cutting table 210, adjust the cutting blade 1 above the wire harness 5 to be tested, input the parameter data of the wire harness 5 to be tested into the host computer system, and obtain the maximum cutting depth △H.

[0046] S2. According to the specifications of the wire harness 5 to be tested, place an adjustment shim with a thickness of 1 / 2 the diameter of the wire gauge (thickness accuracy of 0.2mm) below the stop position. The laser beam of the laser sensor 209 in the cutting assembly 2 is projected onto the light target 208. When the cutting blade 206 cuts the wire harness 5 to be tested, the guide block 205 slides on the guide post 203 through the linear bearing 204. The host computer obtains the moving distance through the distance measured by the laser sensor 209.

[0047] S3. Adjust and fix the height of the cutting blade 206 on the guide post 203, remove the adjusting shim, use a pressure gauge to measure the upward spring force of the cutting table 210, and adjust the buckle so that the spring force is 2.5±0.1N.

[0048] S4. Start the cutting device, drive the motor 11 to drive the fixed seat 12 to rotate, and then the fixed seat 12 drives the slide table 201 to slide back and forth on the slide rail 202 through the connecting rod 16, so that the cutting blade 206 cuts the wire harness 5 to be tested under the gravity of the counterweight 207.

[0049] During the cutting operation, the host computer monitors the real-time position data H2 of the laser sensor 209 and compares it with the initial position data H1 to obtain the current cutting depth △H1, specifically: △H1=|H2-H1|. It then determines whether the current cutting depth △H1 has reached the maximum limit △H. If the current cutting depth △H1 is less than the maximum limit △H, the cutting blade 206 continues to cut the wire harness 5 to be tested. If the current cutting depth △H1 is greater than or equal to the maximum limit △H, the cutting operation is stopped, a stop command is sent to the host computer, and the current cutting depth is marked as the maximum cutting depth value.

[0050] The present invention relates to an arc-resistant cutting device for aviation wires and its testing method. A crank-slider mechanism converts the rotation of the fixed base 12 into linear movement of the slide table 201. The eccentricity of the connecting rod 16 is adjusted by the screw 13 and the adjusting slider 14, thereby regulating the cutting stroke. The cutting depth of the test piece is detected by the laser sensor 209 and the optical target 208. The cutting blade 206 is adjusted to a suitable height according to the wire harness 5 under test, with the cooperation of the guide post 203 and the linear bearing 204. Through the coordinated arrangement of the drive assembly 1 and the cutting assembly 2, automatic cutting of the wire harness 5 under test is achieved, effectively improving the cutting accuracy and efficiency of the wire harness 5 under test.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An arc-resistant cutting device for aviation wires, characterized in that, It includes a driving component and a cutting component. The drive assembly includes a drive motor, a fixed base, a screw, an adjusting slider, a locking member, a connecting rod, and a slide block. The first end face of the fixed base is connected to the output shaft of the drive motor, which is mounted on a base plate. A groove is formed in the middle of the second end face of the fixed base. The screw is disposed in the groove of the fixed base. The adjusting slider is fitted onto the screw and is pulsatorically connected to the screw. A groove is formed on the side end face of the fixed base. The locking member passes through the groove and is threadedly connected to a threaded hole on the adjusting slider. The first end of the connecting rod is rotatably connected to the adjusting slider, and the second end of the connecting rod is rotatably connected to the slide block. The cutting assembly includes a slide table, a slide rail, a guide post, a linear bearing, a guide block, a cutting blade, a counterweight, a light target, a laser sensor, and a cutting table. The bottom of the slide table is slidably connected to the slide rail, which is mounted on a base. The guide post is vertically mounted on the slide table. The guide block is fitted onto the guide post and is slidably connected to the guide post via the linear bearing. The cutting blade is fixedly connected to the middle of the guide block. The counterweight is located at both ends of the cutting blade. The light target is fixedly mounted on the bottom of the guide block. The laser sensor is located above the light target and is mounted on the base via a support frame. The cutting table is located below the cutting blade. The slide of the drive assembly is connected to the slide of the cutting assembly, and the cutting assembly has terminals on both sides. The drive assembly, the cutting assembly and the terminals are all mounted on the base. The terminal block is provided with a positive terminal and a negative terminal. The positive terminal and the negative terminal are respectively connected to the wire harness under test through wires. The wire harness under test is located below the cutting blade. The cutting blade is pressed against the wire harness under test by the gravity of the counterweight. The cutting blade is arranged parallel to the slide rail; the slide rail is arranged perpendicular to the axial direction of the wire harness to be tested.

2. The arc-resistant cutting device for aviation wires according to claim 1, characterized in that, The drive motor drives the fixed base to rotate. The eccentric distance of the connecting rod is adjusted by the screw and the adjusting slider. With the cooperation of the screw and the connecting rod, the rotational motion of the fixed base is converted into the linear sliding of the slide table on the slide rail. The cutting blade is adjusted to be above the wire harness to be tested. The cutting blade is slidably connected to the guide post through the guide block. The height is adjusted to a suitable height according to the specifications of the wire harness to be tested. During cutting, the laser sensor and the light target can provide real-time feedback on the cutting depth of the wire harness to be tested.

3. The arc-resistant cutting device for aviation wires according to claim 1, characterized in that, The guide post is perpendicular to the slide rail.

4. The arc-resistant cutting device for aviation wires according to claim 1, characterized in that, The laser sensor is connected to the input terminal of the host computer controller, and the output terminal of the host computer controller is electrically connected to the drive motor.

5. The arc-resistant cutting device for aviation wires according to claim 1, characterized in that, The cutting blade is made of alloy material.

6. A test method for the arc-cutting resistant device for aviation wires as described in any one of claims 1 to 5, characterized in that, Includes the following steps: S1. Input the parameter data of the wire harness to be tested into the host computer system and obtain the maximum cutting depth △H; S2. In the cutting assembly, the laser beam of the laser sensor is projected onto the light target. When the cutting blade cuts the wire bundle to be tested, the guide block slides on the guide post through the linear bearing. The host computer obtains the moving distance through the distance measured by the laser sensor. S3. The host computer obtains the initial position data H1 of the laser sensor; S4. Start the cutting device, drive the motor to rotate the fixed seat, and then the fixed seat drives the slide table to slide back and forth on the slide rail through the connecting rod, so that the cutting blade cuts the wire harness to be tested under the gravity of the counterweight. S5. During the cutting operation, the host computer monitors the real-time position data H2 of the laser sensor and compares it with the initial position data H1 to obtain the current cutting depth △H. 1 Specifically: △H 1 =|H2-H1|; Determine the current cutting depth △H 1 Has the maximum limit △H been reached? If the current cutting depth △H 1 If the current cutting depth is less than the maximum limit △H, the cutting blade continues to cut the wire harness under test; if the current cutting depth △H 1 If the value is greater than or equal to the maximum limit △H, the cutting operation is stopped, a stop command is sent to the host computer, and the current cutting depth is marked as the maximum cutting depth value.

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