Screw floating height detection equipment

Abstract

The utility model discloses screw floating height detection equipment which comprises a workbench, a workpiece positioning jig, a robot, a robot control device and a floating height judgment device, wherein the workpiece positioning jig, the robot, the robot control device and the floating height judgment device are installed on the workbench. The workpiece positioning jig is used for positioning a workpiece with a screw; a dial indicator is installed on the robot, the robot is used for transferring the dial indicator to the position of a screw of a workpiece, and the dial indicator is used for measuring height data of the screw; the robot control device is used for controlling the robot to work; the floating height judgment device is connected with the dial indicator through an electric wire, and the floating height judgment device is used for storing reference height data of the screw, receiving actual height data, transmitted by the dial indicator, of the screw, judging whether the screw floats or not and displaying a detection result. The screw float height detection device is accurate and stable in detection, high in detection efficiency and capable of recording and storing detection data.

Description

Technical Field

[0001] This utility model relates to the technical field of workpiece inspection equipment, and in particular to a screw floating height detection device. Background Technology

[0002] Currently, multiple screws are required for workpieces such as communication equipment housings and new energy vehicle controller boxes. However, these screws are prone to floating, leading to defects in the entire workpiece and requiring rework. Therefore, after screwing, it is necessary to check the float of each screw to identify those with float issues. However, current screw float detection is mostly done manually, with workers using dial indicators to check each screw. This method relies entirely on manual operation, posing significant quality risks and resulting in low efficiency. Furthermore, the long assembly time and high labor intensity make it unsuitable for mass production. In addition, inconsistent and unreliable manual inspection techniques, the inability to record test data, and the difficulty in subsequent data review are also issues. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a screw float detection device that is accurate and stable in detection, has high detection efficiency, and can record and save detection data, in order to address the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a screw floating height detection device, including a worktable and a workpiece positioning fixture, a robot, a robot control device, and a floating height judgment device mounted on the worktable; the workpiece positioning fixture is used to position the workpiece with screws; a dial indicator is mounted on the robot, and the robot is used to move the dial indicator to the screw position of the workpiece, and the dial indicator is used to measure the height data of the screw; the robot control device is used to control the operation of the robot; the floating height judgment device is connected to the dial indicator through a wire, and the floating height judgment device is used to store the reference height data of the screw, receive the actual height data of the screw transmitted from the dial indicator, and determine whether the screw is floating and display the detection result.

[0005] In the above technical solution, a first support is provided on the middle of the worktable, the workpiece positioning fixture is installed on the first support, the middle of the workpiece positioning fixture is provided with a workpiece positioning cavity for installing and positioning the workpiece, and one side of the workpiece positioning fixture is provided with a photoelectric sensor for sensing whether there is a workpiece. The photoelectric sensor is connected to the robot control device through a wire.

[0006] In the above technical solution, a second support is provided above the rear end of the workbench. The robot includes a robot base, a translational transmission arm, a robot head, a lifting rod, and a clamping mechanism. The robot base is mounted on the second support. One end of the translational transmission arm is rotatably mounted on the robot base. One end of the robot head is rotatably mounted on the other end of the translational transmission arm. The lifting rod is vertically mounted on the other end of the robot head. The clamping mechanism is mounted on the lower end of the lifting rod. The dial indicator is mounted on the clamping mechanism.

[0007] In the above technical solution, a first servo motor is provided inside the robot base. The motor shaft of the first servo motor extends upward and connects to one end of the translation transmission arm, so that the translation transmission arm can rotate on the robot base. A second servo motor is installed inside one end of the robot head. The motor shaft of the second servo motor extends downward and connects to the other end of the translation transmission arm, so that the robot head can rotate on the other end of the translation transmission arm. A third servo motor is installed inside the other end of the robot head. The third servo motor cooperates with the lifting rod to drive the lifting rod to rise or fall.

[0008] In the above technical solution, the robot control device includes a PLC control system, a touch screen display, and control buttons. The PLC control system is installed below the workbench and is connected to the robot via wires. A frame is installed on the workbench, the touch screen display is installed on the frame, and the control buttons are installed at the lower end of the touch screen display. The touch screen display and the control buttons are respectively connected to the PLC control system via wires.

[0009] In the above technical solution, the buoyancy judgment device is an industrial computer, which includes a host and a monitor. The host is installed on the front end of the workbench, and the monitor is installed on the frame. The monitor and the host are connected by wires.

[0010] In the above technical solution, the industrial computer also includes a mouse and a barcode scanner. The mouse and barcode scanner are respectively connected to the host via wires. The barcode scanner is used to scan the barcode on the workpiece and input the barcode information into the host. A third support for placing the mouse and barcode scanner is also installed on the front end of the workbench.

[0011] In the above technical solution, the screw floating height detection device also includes a machine body, the workbench is installed on the machine body, the machine body has a mounting box, the PLC control system is installed inside the mounting box, and a box door is provided on one side of the mounting box; a number of casters are installed at the lower end of the machine body, and the casters are provided with tensioning plates for locking or releasing the casters.

[0012] The beneficial effects of this utility model are as follows: This utility model uses a workpiece positioning fixture to position a workpiece with screws, uses a robot to install a dial indicator and move the dial indicator to the screw position on the workpiece, uses the dial indicator to measure the height data of the screw and transmits the actual height data of the screw to the floating height judgment device, uses the floating height judgment device to store the reference height data of the screw, compares the actual height data of the screw with the reference height data, judges whether the screw is floating and displays the detection result. The entire detection process is completed automatically, the detection is accurate and stable, the detection efficiency is high, and the detection data can be recorded and saved. Attached Figure Description

[0013] Figure 1 This is a first-angle overall structural diagram of the present invention.

[0014] Figure 2 This is a second-angle overall structural diagram of the present invention.

[0015] Figure 3 This is a third-angle view of the overall structure of this utility model. Detailed Implementation

[0016] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] like Figures 1-3 As shown, this utility model is a screw floating height detection device, including a workbench 1 and a workpiece positioning fixture 2, a robot 3, a robot control device 4, and a floating height judgment device 5 mounted on the workbench 1. The workpiece positioning fixture 2 is used to position a workpiece with screws (not shown in the figure). A dial indicator 6 is mounted on the robot 3, and the robot 3 is used to move the dial indicator 6 to the screw position on the workpiece. The dial indicator 6 is used to measure the height data of the screw. The robot control device 4 is used to control the operation of the robot 3. The floating height judgment device 5 is connected to the dial indicator 6 by wires. The floating height judgment device 5 is used to store the reference height data of the screw, receive the actual height data of the screw transmitted from the dial indicator 6, and determine whether the screw is floating and display the detection result. It should be noted that the workpiece of this utility model can have only one screw or contain multiple screws. When there are multiple screws on the workpiece, the screw floating height detection device needs to perform floating height detection on each screw.

[0018] The workflow of this utility model includes the following steps:

[0019] I. The steps for determining the screw reference height data specifically include: 1) Positioning a standard workpiece with screws on the workpiece positioning fixture 2, ensuring that all screws on the standard workpiece are fixed in the optimal state, i.e., each screw has no floating height; 2) The robot control device 4 controls the robot to move the dial indicator 6 to the screw position on the workpiece; 3) The dial indicator 6 measures the screw height data and transmits the screw height data to the floating height judgment device 5; 4) The floating height judgment device 5 saves the height data of each screw, and this screw height data is the screw reference height data.

[0020] II. The steps for setting the minimum tolerance range for screw float height. For example, if the minimum tolerance range is set to 0.02 mm, then a screw float height less than 0.02 mm is acceptable, and a float height greater than or equal to 0.02 mm is unacceptable.

[0021] III. The steps for detecting whether the screws on each workpiece are floating are as follows: 1) Position the workpiece with screws to be inspected on the workpiece positioning fixture 2; 2) The robot control device 4 controls the robot to move the dial indicator 6 to the screw position on the workpiece; 3) The dial indicator 6 measures the height data of the screw and transmits the screw height data to the floating height judgment device 5; 4) The floating height judgment device 5 compares the screw height data with the screw reference height data and determines whether the screw height data exceeds the sum of the screw reference height data and the minimum tolerance range; if the judgment result is "no", the workpiece screw floating height detection is qualified; if the judgment result is "yes", the workpiece screw floating height detection is unqualified; all detection data are stored in the floating height judgment device 5.

[0022] This invention uses a workpiece positioning fixture 2 to position a workpiece with screws, a robot 3 to install a dial indicator 6 and move the dial indicator 6 to the screw position on the workpiece, the dial indicator 6 to measure the height data of the screw and transmit the actual height data of the screw to a floating height judgment device 5, the floating height judgment device 5 to store the reference height data of the screw, compare the actual height data of the screw with the reference height data, determine whether the screw is floating and display the detection result. The entire detection process is completed automatically, with accurate and stable detection, high detection efficiency and the ability to record and save detection data.

[0023] like Figures 1-3As shown, a first support 7 is provided above the middle of the workbench 1, and the workpiece positioning fixture 2 is mounted on the first support 7. The middle of the workpiece positioning fixture 2 is provided with a workpiece positioning cavity 21 for mounting and positioning the workpiece. One side of the workpiece positioning fixture 2 is provided with a photoelectric sensor 8 for sensing whether a workpiece is present. The photoelectric sensor 8 is connected to the robot control device 4 via a wire. By setting the photoelectric sensor 8, it is possible to determine whether the workpiece to be inspected is present in the workpiece positioning fixture 2. If no workpiece is detected, subsequent inspection steps are not performed; if a workpiece is detected, subsequent inspection steps can begin.

[0024] like Figures 1-3 As shown, a second support 9 is provided above the rear end of the workbench 1. The robot 3 includes a robot base 31, a translational transmission arm 32, a head 33, a lifting rod 34, and a clamping mechanism 35. The robot base 31 is mounted on the second support 9. One end of the translational transmission arm 32 is rotatably mounted on the robot base 31. One end of the head 33 is rotatably mounted on the other end of the translational transmission arm 32. The lifting rod 34 is vertically mounted on the other end of the head 33. The clamping mechanism 35 is mounted on the lower end of the lifting rod 34. The dial indicator 6 is mounted on the clamping mechanism 35. The cooperation of the robot base 31, the translational transmission arm 32, and the head 33 of this invention enables the dial indicator to move in the X and Y axis directions. The lifting rod 34 of this invention enables the dial indicator to move in the Z axis direction.

[0025] As a preferred embodiment of robot 3, a first servo motor (not shown) is provided inside the robot base 31. The motor shaft of the first servo motor extends upward and connects to one end of the translation transmission arm 32, enabling the translation transmission arm 32 to rotate on the robot base 31. A second servo motor (not shown) is installed inside one end of the robot head 33. The motor shaft of the second servo motor extends downward and connects to the other end of the translation transmission arm 32, enabling the robot head 33 to rotate on the other end of the translation transmission arm 32. A third servo motor (not shown) is installed inside the other end of the robot head 33. The third servo motor cooperates with the lifting rod 34 to drive the lifting rod 34 to rise or fall.

[0026] like Figures 1-3As shown, the robot control device 4 includes a PLC control system (not shown), a touch screen display 41, and control buttons 42. The PLC control system is installed below the workbench 1 and is connected to the robot 3 via wires. A frame 10 is installed on the workbench 1, the touch screen display 41 is installed on the frame 10, and the control buttons 42 are installed at the lower end of the touch screen display 41. The touch screen display 41 and the control buttons 42 are respectively connected to the PLC control system via wires. The floating height judgment device 5 is an industrial computer, which includes a host 51 and a monitor 52. The host 51 is installed on the front end of the workbench 1, and the monitor 52 is installed on the frame 10. The monitor 52 is connected to the host 51 via wires. The industrial computer also includes a mouse and a barcode scanner, which are connected to the host 51 via wires. The barcode scanner is used to scan the barcode on the workpiece and input the barcode information into the host 51. Before inspection, the workpiece is scanned with the barcode scanner. A third support 16 for placing the mouse and barcode scanner is also installed on the front end of the workbench 1.

[0027] like Figures 1-3 As shown, the screw floating height detection device also includes a body 11, the workbench 1 is installed on the body 11, the body 11 has a mounting box 12, the PLC control system is installed inside the mounting box 12, and a box door 13 is provided on one side of the mounting box 12; a number of casters 14 are installed at the lower end of the body 11, and the casters 14 are provided with tensioning plates 15 for locking or releasing the casters.

[0028] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A screw float height detection device, characterized in that: The system includes a workbench and a workpiece positioning fixture mounted on the workbench, a robot, a robot control device, and a float height determination device. The workpiece positioning fixture is used to position workpieces with screws. A dial indicator is mounted on the robot, which is used to move the dial indicator to the screw position on the workpiece. The dial indicator is used to measure the height data of the screw. The robot control device is used to control the operation of the robot. The float height determination device is connected to the dial indicator via a wire. The float height determination device is used to store the reference height data of the screw, receive the actual height data of the screw transmitted from the dial indicator, and determine whether the screw is floated and display the detection result.

2. The screw float height detection device according to claim 1, characterized in that: A first support is provided on the middle of the workbench, and the workpiece positioning fixture is installed on the first support. The middle part of the workpiece positioning fixture is provided with a workpiece positioning cavity for installing and positioning the workpiece. A photoelectric sensor for sensing whether there is a workpiece is provided on one side of the workpiece positioning fixture. The photoelectric sensor is connected to the robot control device through a wire.

3. The screw float detection device according to claim 1, characterized in that: A second support is provided above the rear end of the workbench. The robot includes a robot base, a translational transmission arm, a robot head, a lifting rod, and a clamping mechanism. The robot base is mounted on the second support. One end of the translational transmission arm is rotatably mounted on the robot base. One end of the robot head is rotatably mounted on the other end of the translational transmission arm. The lifting rod is vertically mounted on the other end of the robot head. The clamping mechanism is mounted on the lower end of the lifting rod. The dial indicator is mounted on the clamping mechanism.

4. The screw float detection device according to claim 3, characterized in that: The robot base is equipped with a first servo motor, whose motor shaft extends upward and connects to one end of a translational transmission arm, enabling the translational transmission arm to rotate on the robot base. A second servo motor is installed inside one end of the robot head, whose motor shaft extends downward and connects to the other end of the translational transmission arm, enabling the robot head to rotate on the other end of the translational transmission arm. A third servo motor is installed inside the other end of the robot head, and the third servo motor cooperates with the lifting rod to drive the lifting rod to rise or fall.

5. The screw float detection device according to claim 1, characterized in that: The robot control device includes a PLC control system, a touch screen display, and control buttons. The PLC control system is installed below the workbench and is connected to the robot via wires. A frame is installed on the workbench, the touch screen display is installed on the frame, and the control buttons are installed at the bottom of the touch screen display. The touch screen display and control buttons are respectively connected to the PLC control system via wires.

6. The screw float detection device according to claim 5, characterized in that: The buoyancy determination device is an industrial computer, which includes a host and a monitor. The host is mounted on the front end of the workbench, and the monitor is mounted on the frame. The monitor and the host are connected by wires.

7. The screw float detection device according to claim 6, characterized in that: The industrial computer also includes a mouse and a barcode scanner, which are connected to the host computer via wires. The barcode scanner is used to scan the barcode on the workpiece and input the barcode information into the host computer. A third support for placing the mouse and barcode scanner is also installed on the front end of the workbench.

8. The screw float detection device according to claim 5, characterized in that: It also includes a machine body, the workbench is mounted on the machine body, the machine body has a mounting box, the PLC control system is installed inside the mounting box, and a door is provided on one side of the mounting box; several casters are installed at the lower end of the machine body, and the casters are provided with tensioning plates for locking or releasing the casters.

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