Single-wire cutting machine suitable for workpiece half-and-half cutting

Abstract

The utility model discloses a single-wire cutting machine suitable for workpiece half-and-half cutting. The single-wire cutting machine is provided with a machine body frame, a cutting executing mechanism, a workbench assembly, an image collecting system and a PLC control system. The machine body frame is fixed on the horizontal ground; the workbench assembly is arranged below the cutting line and comprises a workbench horizontal moving mechanism and a workbench rotating mechanism arranged on the workbench horizontal moving mechanism, and a workpiece to be cut is arranged on the workbench rotating mechanism; the image acquisition system is provided with a camera, a clamping assembly, a camera horizontal moving mechanism and a camera lifting mechanism, the camera is assembled with the camera lifting mechanism through the clamping assembly, the camera lifting mechanism is assembled with the camera horizontal moving mechanism, and the image acquisition system is in communication connection with a PLC control system of the single-wire cutting machine. The utility model ensures that the central surface of the workpiece is aligned with the cutting line, and achieves the purposes of improving the product percent of pass and reducing the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of wire cutting, in particular to a single-wire cutting machine and a cutting method suitable for cutting a circular ring or cylindrical ceramic workpiece in half. Background Art

[0002] As attached Figure 1 , Figure 2 As shown, some ring-shaped or cylindrical ceramic workpieces 1 need to be cut in half according to the requirements of the product drawings to obtain two semi-ring or semi-cylindrical products with the same size specifications.

[0003] According to the characteristics of ceramic materials, it is more appropriate to use wire cutting for the cutting of the above products. However, the positioning of the workpiece before cutting is more difficult, especially for workpieces with symmetrical holes 1-1 or grooves on the end face. If the center surface 1-2 of the workpiece cannot be aligned with the cutting line, the two products cut will be unqualified or even scrapped at the same time, which not only reduces the product qualification rate, but also increases the material and labor costs. To solve this problem, it is necessary to optimize the design of a single-wire cutting machine and cutting method for cutting workpieces in half. Utility Model Content

[0004] The utility model provides a single-wire cutting machine suitable for half-cutting a workpiece, which is used to realize half-cutting of annular or cylindrical ceramic workpieces, ensures that the center surface of the workpiece is aligned with the cutting line, and achieves the purpose of improving product qualification rate and reducing production cost.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A single-wire cutting machine suitable for cutting a workpiece in half is provided with a machine frame, a cutting actuator, a worktable assembly, an image acquisition system and a PLC control system; the machine frame is fixed on a horizontal ground, and the cutting actuator, the worktable assembly, the image acquisition system and the PLC control system are arranged on the machine frame; the cutting actuator drives two sets of horizontally arranged guide wheels to move up and down through a guide wheel driving motor and a guide wheel lead screw nut transmission assembly, so that the cutting line between the two sets of horizontally arranged guide wheels moves in a vertical direction to achieve cutting of the workpiece; the worktable assembly is arranged below the cutting line, and includes a worktable horizontal moving mechanism and a worktable rotating mechanism arranged on the worktable horizontal moving mechanism, and the workpiece to be cut is placed on the worktable rotating mechanism; the image acquisition system is provided with a camera, a clamping assembly, a camera horizontal moving mechanism and a camera lifting mechanism, the camera is assembled with the camera lifting mechanism through the clamping assembly, the camera lifting mechanism is matched with the camera horizontal moving mechanism, and the image acquisition system is communicatively connected with the PLC control system of the single-wire cutting machine.

[0007] The above-mentioned single-wire cutting machine suitable for cutting workpieces in half, the image acquisition system consists of two parts arranged on the left and right, in each part, its camera horizontal movement mechanism includes a screw nut transmission unit driven by a camera horizontal motor and a camera horizontal slider, the nut in the screw nut transmission unit driven by the camera horizontal motor is fixedly connected to the camera horizontal slider.

[0008] The above-mentioned single-wire cutting machine suitable for cutting workpieces in half, the camera lifting mechanism in the image acquisition system is installed on the camera horizontal slider of the camera horizontal moving mechanism, the camera lifting mechanism includes a screw nut transmission unit driven by a vertical motor and a camera lifting slider, the nut in the screw nut transmission unit driven by the vertical motor is fixedly connected to the camera lifting slider; the camera is installed on the camera lifting slider through a clamping assembly.

[0009] The above-mentioned single-wire cutting machine suitable for cutting a workpiece in half, the clamping assembly is provided with a clamping seat and a manual adjustment knob, the clamping seat is hingedly assembled with the camera lifting slider, and the clamping seat can be locked and fixed by the manual adjustment knob.

[0010] The above-mentioned single-wire cutting machine is suitable for cutting the workpiece in half, and the horizontal moving mechanism of the worktable includes a screw nut transmission unit driven by a horizontal motor of the worktable, a horizontal slide and a slide guide rail. The nut in the screw nut transmission unit driven by the horizontal motor of the worktable is fixedly connected with the horizontal slide, and the horizontal slide is assembled with the slide guide rail.

[0011] The above-mentioned single-wire cutting machine suitable for cutting workpieces in half, the worktable rotating mechanism includes a worm gear transmission unit and a turntable driven by a rotating motor; the rotating motor is fixed on the horizontal slide of the worktable horizontal moving mechanism, and the output shaft of the rotating motor is connected to the worm in the worm gear transmission unit; the worm in the worm gear transmission unit is fixedly assembled with the turntable, and a workpiece clamping and positioning fixture is arranged on the turntable.

[0012] The above-mentioned single-wire cutting machine suitable for cutting a workpiece in half is provided with a rotation angle scale on the outer wall of the turntable, a fixing seat is provided on the horizontal slide, and an angle indication mark is provided on the fixing seat.

[0013] A cutting method suitable for cutting a workpiece in half, which completes the workpiece in half cutting operation by the above-mentioned single-wire cutting machine, and the specific operation steps are as follows:

[0014] a. Input the diameter of the workpiece to be cut or the center distance between two identification points in the PLC control system processor of the single-wire cutting machine. The identification points are the center points of the symmetrical holes or grooves on the workpiece;

[0015] b. Place the workpiece to be cut on the turntable, fix it with the workpiece clamping and positioning fixture, and then perform the alignment operation. The two sets of horizontally arranged guide wheels in the cutting actuator move downward under the drive of the motor, so that the cutting line between the two sets of horizontally arranged guide wheels just contacts the upper end surface of the workpiece;

[0016] c. Adjust the image acquisition system, adjust the camera to the position above the workpiece through the camera horizontal movement mechanism and camera lifting mechanism, and manually adjust the camera's elevation angle to align the camera lens with the upper end surface of the workpiece;

[0017] d. Start the camera to take pictures and transmit the image information to the PLC control system processor, identify the maximum horizontal distance of the outer edge of the workpiece or the center position of the two identification points through the processor, and then determine the center plane of the workpiece according to the data, and then compare it with the direction of the cutting line between the two sets of guide wheels arranged in the horizontal direction, and calculate the distance and / or angle between the center plane of the workpiece and the cutting line between the two sets of guide wheels arranged in the horizontal direction;

[0018] e. Reset the camera to its initial position through the camera horizontal movement mechanism and camera lifting mechanism;

[0019] f. Use the PLC control system command to activate the worktable rotation mechanism and / or the worktable horizontal movement mechanism to adjust the workpiece position and placement posture so that the center plane of the workpiece is aligned with the cutting line between the two sets of horizontally arranged guide wheels;

[0020] g. The PLC control system instructs the cutting actuator to operate and complete the workpiece half-cutting operation.

[0021] The above-mentioned cutting method suitable for cutting a workpiece in half, in the step b, when the workpiece to be cut is placed on the turntable, the center plane of the workpiece is aligned with the cutting line between the two sets of guide wheels arranged horizontally as much as possible through manual identification.

[0022] The above-mentioned cutting method suitable for cutting the workpiece in half, in the steps c and d, when the diameter size of the workpiece or the distance between the two identification points is small, one group of cameras is selected to adjust its position, and then one group of cameras is used to take pictures of the workpiece and transmit the information to the PLC control system; when the diameter size of the workpiece or the distance between the two identification points is large, two groups of cameras are selected to adjust its position, and then two groups of cameras are used to take pictures of the workpiece and transmit the information to the PLC control system.

[0023] The utility model provides a single-wire cutting machine suitable for cutting a workpiece in half. An image acquisition system is arranged on the single-wire cutting machine, and a worktable rotating mechanism and a worktable horizontal moving mechanism are arranged in the worktable assembly. Therefore, when cutting a circular ring or cylindrical ceramic workpiece in half, the workpiece position information can be collected by a camera in the image acquisition system, and the shape or identification point of the workpiece to be cut can be identified by a PLC control system processor to determine the position of the center plane of the workpiece, and the distance and / or angle between the center plane of the workpiece and the cutting line between two groups of horizontally arranged guide wheels can be calculated. Then, the worktable rotating mechanism and the worktable horizontal moving mechanism cooperate to adjust the position and / or posture of the workpiece, and then the cutting actuator completes the workpiece cutting operation in half. It can be seen that the utility model can ensure that when cutting a circular ring or cylindrical ceramic workpiece in half, the center plane of the workpiece is aligned with the cutting line between the two groups of horizontally arranged guide wheels, thereby achieving the purpose of improving the product qualification rate and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the workpiece to be cut targeted by the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the workpiece after cutting and processing;

[0026] Figure 3 It is a structural schematic diagram of the single-wire cutting machine described in the utility model;

[0027] Figure 4 yes Figure 3 K-direction view;

[0028] Figure 5 yes Figure 4 Schematic diagram of the AA section structure;

[0029] Figure 6 This is a schematic diagram of the structure of the workbench of the single-wire cutting machine described in the utility model;

[0030] Figure 7 yes Figure 6 The schematic diagram of the cross-sectional structure of the single-wire cutting machine workbench is shown in;

[0031] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle BB section (partial);

[0032] Fig. 9 It is a schematic diagram of the image acquisition system of the single-wire cutting machine described in the utility model;

[0033] Fig.10 It is a top view of the image acquisition system of the single-wire cutting machine of the utility model;

[0034] Fig.11 It is a schematic diagram of the relative position between the camera and the workpiece when taking pictures in the image acquisition system;

[0035] Fig.12 It is a schematic diagram of the deviation between the center plane of the workpiece and the cutting line between two sets of horizontally arranged guide wheels in the image captured by the camera.

[0036] Explanation of the symbols in the figure:

[0037] 1 is the workpiece, 1-1 is the symmetrical hole, and 1-2 is the center plane;

[0038] 2 is single wire cutting machine

[0039] 2-1 is the body frame;

[0040] 2-2 is the cutting actuator, 2-2-1 is the guide wheel, 2-2-2 is the cutting line, 2-2-3 is the guide wheel drive motor, and 2-2-4 is the guide wheel lead screw nut transmission assembly;

[0041] 2-3 is the workbench assembly, 2-3-1 is the screw nut transmission unit driven by the horizontal motor of the workbench, 2-3-2 is the slide rail, 2-3-3 is the horizontal slide, 2-3-4 is the worm gear transmission unit driven by the rotary motor, and 2-3-5 is the turntable;

[0042] 2-4 is the image acquisition system, 2-4-1 is the camera, 2-4-2 is the lead screw nut transmission unit driven by the vertical motor, 2-4-3 is the lead screw nut transmission unit driven by the camera horizontal motor, 2-4-4 is the camera lifting slider, 2-4-5 is the camera horizontal slider, 2-4-6 is the clamping seat, and 2-4-7 is the manual adjustment knob. DETAILED DESCRIPTION

[0043] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] See Figure 1. Figure 2 Some ring or cylinder-shaped ceramic workpieces 1 need to be cut in half according to the requirements of the product drawings to obtain two semi-ring or semi-cylinder products with the same size specifications.

[0045] See also Figure 3 , Figure 4In order to improve the qualified rate of half-cutting of a circular or cylindrical ceramic workpiece 1 and reduce the cutting processing cost, the utility model provides a single-wire cutting machine suitable for half-cutting of the workpiece, the single-wire cutting machine 2 is provided with a body frame 2-1, a cutting actuator 2-2, a workbench assembly 2-3, an image acquisition system 2-4 and a PLC control system; the body frame 2-1 is fixed on a horizontal ground, the cutting actuator 2-2, the workbench assembly 2-3, the image acquisition system 2-4 and the PLC control system are arranged on the body frame 2-1, and the workpiece 1 is placed on the workbench assembly 2-3.

[0046] See also Figure 4 , Figure 5 The single-wire cutting machine suitable for cutting a workpiece in half described in the utility model has a cutting actuator 2-2 provided with a guide wheel 2-2-1 and a cutting line 2-2-2, wherein two sets of guide wheels 2-2-1 arranged horizontally on both sides of the cutting line operation area are also provided with a guide wheel drive motor 2-2-3 and a guide wheel lead screw nut transmission assembly 2-2-4, and the two sets of guide wheels 2-2-1 arranged horizontally can be driven to rise and fall by the guide wheel drive motor 2-2-3 and the guide wheel lead screw nut transmission assembly 2-2-4, so that the cutting line 2-2-2 between the two sets of guide wheels arranged horizontally can be moved in the vertical direction, thereby realizing the cutting of the workpiece 1 arranged on the workbench assembly 2-3.

[0047] See also Figure 6 , Figure 7 , Figure 8 The single-wire cutting machine suitable for cutting a workpiece in half described in the utility model has a worktable assembly 2-3 arranged below the cutting line 2-2-2, including a worktable horizontal moving mechanism and a worktable rotating mechanism, and the worktable rotating mechanism is arranged above the worktable horizontal moving mechanism; the worktable horizontal moving mechanism includes a screw nut transmission unit 2-3-1 driven by a horizontal motor of the worktable, a horizontal slide 2-3-3 and a slide guide rail 2-3-2, the screw nut transmission unit 2-3-1 driven by the horizontal motor of the worktable has a nut fixedly connected to the horizontal slide 2-3-3, and the horizontal slide 2-3-3 is assembled with the slide guide rail 2-3-2; the worktable The worktable rotating mechanism includes a worm gear transmission unit 2-3-4 and a turntable 2-3-5 driven by a rotating motor. The rotating motor is fixed on the horizontal slide 2-3-3 of the horizontal moving mechanism of the worktable. The output shaft of the rotating motor is connected to the worm in the worm gear transmission unit. The worm in the worm gear transmission unit is fixedly assembled with the turntable 2-3-5. A workpiece clamping and positioning fixture is arranged on the turntable 2-3-5. The workpiece 1 to be cut is fixed on the turntable 2-3-5 by the workpiece clamping and positioning fixture. A rotation angle scale is arranged on the outer wall of the turntable 2-3-5. A fixed seat is arranged on the horizontal slide 2-3-3, and an angle indication mark is arranged on the fixed seat.

[0048] See also Fig. 9 , Fig.10 The single-wire cutting machine suitable for cutting workpieces in half described in the utility model has an image acquisition system 2-4 that is communicatively connected to the PLC control system of the single-wire cutting machine 2. The image acquisition system 2-4 includes two parts arranged on the left and right, and a camera 2-4-1, a clamping assembly, a camera horizontal moving mechanism and a camera lifting mechanism are arranged in each part; the camera horizontal moving mechanism includes a screw nut transmission unit 2-4-3 driven by a camera horizontal motor and a camera horizontal slider 2-4-5, and the nut in the screw nut transmission unit 2-4-3 driven by the camera horizontal motor is fixedly connected to the camera horizontal slider 2-4-5; the camera lifting mechanism is installed on The camera horizontal slider 2-4-5 of the camera horizontal moving mechanism includes a screw nut transmission unit 2-4-2 driven by a vertical motor and a camera lifting slider 2-4-4, wherein the nut in the screw nut transmission unit 2-4-2 driven by the vertical motor is fixedly connected to the camera lifting slider 2-4-4; the camera 2-4-1 is installed on the camera lifting slider 2-4-4 through a clamping assembly, and the clamping assembly is provided with a clamping seat 2-4-6 and a manual adjustment knob 2-4-7, and the clamping seat 2-4-6 is hingedly assembled with the camera lifting slider 2-4-4, and the clamping seat 2-4-6 can be locked and fixed by the manual adjustment knob 2-4-7.

[0049] See also Figures 1 to 12 The utility model also provides a cutting method suitable for cutting a workpiece in half, which uses the above-mentioned single-wire cutting machine 2 to complete the half-cutting operation of the workpiece 1, and can collect the workpiece position information by taking pictures with the camera 2-4-1 in the image acquisition system 2-4, and identify the shape or identification point of the workpiece to be cut through the PLC control system processor, so as to determine the position of the center plane 1-2 of the workpiece 1, and calculate the distance and angle θ between the center plane 1-2 of the workpiece and the cutting line 2-2-2 between the two sets of horizontally arranged guide wheels, and then adjust the position and posture of the workpiece through the cooperation of the worktable rotating mechanism and the worktable horizontal moving mechanism, and then complete the half-cutting operation of the workpiece through the cutting actuator 2-2, the specific operation steps are as follows:

[0050] a. Input the diameter size of the workpiece 1 to be cut or the center distance between two identification points in the PLC control system processor of the single-wire cutting machine 2, where the identification points are the center points of the symmetrical holes 1-1 or grooves set on the workpiece 1;

[0051] b. Place the workpiece 1 to be cut on the turntable 2-3-5, and use human eyes to identify the workpiece 1, and try to align the center plane 1-2 of the workpiece 1 with the cutting line 2-2-2 between the two sets of horizontally arranged guide wheels 2-2-1, and then fix it with the workpiece clamping and positioning fixture, and then perform the alignment operation. The two sets of horizontally arranged guide wheels 2-2-1 in the cutting actuator 2-2 are driven by the motor to move downward, so that the cutting line 2-2-2 between the two sets of horizontally arranged guide wheels just contacts the upper end surface of the workpiece 1;

[0052] c. Adjust the image acquisition system. Adjust the camera 2-4-1 to the position above the workpiece 1 through the camera horizontal movement mechanism and the camera lifting mechanism. Manually adjust the elevation angle of the camera 2-4-1 so that the camera lens is aligned with the upper end surface of the workpiece 1. When the diameter size of the workpiece 1 or the distance between the two identification points is small, select one group of cameras 2-4-1 to adjust its position; when the diameter size of the workpiece 1 or the distance between the two identification points is large, select two groups of cameras 2-4-1 to adjust its position;

[0053] d. Start the camera to take pictures. When the diameter size of the workpiece 1 or the distance between the two identification points is small, a group of cameras 2-4-1 are used to take pictures of the workpiece 1. When the diameter size of the workpiece 1 or the distance between the two identification points is large, two groups of cameras 2-4-1 are selected to take pictures of the workpiece 1, and the image information is transmitted to the PLC control system processor. If the workpiece 1 is not provided with a symmetrical hole 1-1 or a groove, the processor can be used to identify the maximum horizontal distance of the outer edge of the workpiece 1 in the image. At this time, the line connecting the two points of the maximum horizontal distance is the center plane 1-2 of the workpiece 1, and then the distance between the center plane 1-2 of the workpiece and the cutting line 2-2-2 between the two groups of horizontally arranged guide wheels is calculated. If the workpiece 1 is provided with a symmetrical hole 1-1 or a groove, the processor is used to identify the centers of the two symmetrical holes of the workpiece 1 in the image, and the line connecting the centers of the two symmetrical holes is the center plane 1-2 of the workpiece 1, and then the angle between the center plane 1-2 of the workpiece and the cutting line 2-2-2 between the two groups of horizontally arranged guide wheels and / or the distance between the two are calculated.

[0054] e. Reset the camera 2-4-1 to its initial position through the camera horizontal movement mechanism and the camera lifting mechanism;

[0055] f. The worktable rotating mechanism and / or the worktable horizontal moving mechanism are activated through the PLC control system command to adjust the position and placement posture of the workpiece 1 so that the center plane 1-2 of the workpiece 1 is aligned with the cutting line 2-2-2 between the two sets of guide wheels 2-2-1 arranged in the horizontal direction;

[0056] g. The PLC control system instructs the cutting actuator 2-2 to operate and complete the workpiece half-cutting operation.

Claims

1. A single-wire cutting machine suitable for cutting a workpiece in half, characterized in that: The single-wire cutting machine (2) is provided with a machine frame (2-1), a cutting actuator (2-2), a workbench assembly (2-3), an image acquisition system (2-4) and a PLC control system; the machine frame (2-1) is fixed on a horizontal ground, and the cutting actuator (2-2), the workbench assembly (2-3), the image acquisition system (2-4) and the PLC control system are arranged on the machine frame (2-1); the cutting actuator (2-2) drives two sets of horizontally arranged guide wheels (2-2-1) to move up and down through a guide wheel driving motor (2-2-3) and a guide wheel lead screw nut transmission assembly (2-2-4), so that the cutting line (2-2-1) between the two sets of horizontally arranged guide wheels is moved upward and downward. 2-2) moves in a vertical direction to realize cutting of a workpiece (1); the worktable assembly (2-3) is arranged below the cutting line (2-2-2), and includes a worktable horizontal moving mechanism and a worktable rotating mechanism arranged above the worktable horizontal moving mechanism, and the workpiece (1) to be cut is placed on the worktable rotating mechanism; the image acquisition system (2-4) is provided with a camera (2-4-1), a clamping assembly, a camera horizontal moving mechanism and a camera lifting mechanism, the camera (2-4-1) is assembled with the camera lifting mechanism through the clamping assembly, the camera lifting mechanism is assembled with the camera horizontal moving mechanism, and the image acquisition system (2-4) is communicatively connected with the PLC control system of the single-line cutting machine (2).

2. The single-wire cutting machine suitable for cutting a workpiece in half according to claim 1, characterized in that: The image acquisition system (2-4) comprises two parts arranged on the left and right, and in each part, its camera horizontal movement mechanism comprises a screw nut transmission unit (2-4-3) driven by a camera horizontal motor and a camera horizontal slider (2-4-5), and the nut in the screw nut transmission unit (2-4-3) driven by the camera horizontal motor is fixedly connected to the camera horizontal slider (2-4-5).

3. The single-wire cutting machine suitable for cutting a workpiece in half according to claim 2, characterized in that: The camera lifting mechanism in the image acquisition system (2-4) is mounted on a camera horizontal slider (2-4-5) of a camera horizontal moving mechanism, the camera lifting mechanism comprising a lead screw nut transmission unit (2-4-2) driven by a vertical motor and a camera lifting slider (2-4-4), the nut in the lead screw nut transmission unit (2-4-2) driven by the vertical motor being fixedly connected to the camera lifting slider (2-4-4); the camera (2-4-1) is mounted on the camera lifting slider (2-4-4) via a clamping assembly.

4. The single-wire cutting machine suitable for cutting a workpiece in half according to claim 3, characterized in that: The clamping assembly is provided with a clamping seat (2-4-6) and a manual adjustment knob (2-4-7); the clamping seat (2-4-6) is hingedly assembled with a camera lifting slider (2-4-4); and the clamping seat (2-4-6) can be locked and fixed by the manual adjustment knob (2-4-7).

5. The single-wire sawing machine suitable for cutting a workpiece in half according to any one of claims 1 to 4, characterized in that: The workbench horizontal movement mechanism comprises a screw nut transmission unit (2-3-1) driven by a horizontal motor of the workbench, a horizontal slide (2-3-3) and a slide guide rail (2-3-2); a nut in the screw nut transmission unit (2-3-1) driven by a horizontal motor of the workbench is fixedly connected to the horizontal slide (2-3-3), and the horizontal slide (2-3-3) is assembled with the slide guide rail (2-3-2).

6. The single-wire cutting machine suitable for cutting a workpiece in half according to claim 5, characterized in that: The worktable rotating mechanism comprises a worm gear transmission unit (2-3-4) driven by a rotating motor and a turntable (2-3-5); the rotating motor is fixed on a horizontal slide (2-3-3) of a horizontal moving mechanism of the worktable, and the output shaft of the rotating motor is connected to a worm in the worm gear transmission unit; the worm in the worm gear transmission unit is fixedly assembled with the turntable (2-3-5), and a workpiece clamping and positioning fixture is arranged on the turntable (2-3-5).

7. The single-wire cutting machine suitable for cutting a workpiece in half according to claim 6, characterized in that: A rotation angle scale is provided on the outer wall of the rotating disk (2-3-5), a fixing seat is provided on the horizontal slide (2-3-3), and an angle indication mark is provided on the fixing seat.

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