Auxiliary centering device for optical measuring instrument

Abstract

The utility model relates to the field of optical measurement auxiliary devices, in particular to an auxiliary centering device for an optical measuring instrument, which comprises a device body, and the device body comprises a clamping mechanism, a laser alignment mechanism and a controller. The clamping mechanism is arranged below the laser alignment mechanism and comprises a rotary driving module, a clamping disc and a plurality of clamps; the rotary driving module is used for driving the clamping disc to rotate around the vertical shaft; the clamp is used for clamping a to-be-tested workpiece; the laser alignment mechanism comprises a moving module and an infrared laser; the moving module is used for driving the infrared laser to move in the X-axis direction and the Y-axis direction, and the infrared laser is used for projecting a cross datum line to the clamping disc. The controller is electrically connected with the rotation driving module, the moving module and the infrared laser. According to the auxiliary centering device for the optical measuring instrument, rapid, accurate and intelligent centering is realized, and the automation level and the production efficiency of optical measurement are improved.

Description

Technical Field

[0001] This utility model relates to the field of optical measurement auxiliary devices, and in particular to an auxiliary centering device for an optical measuring instrument. Background Technology

[0002] An optical measuring instrument is a device used for optical measurement. It is typically used to accurately measure the size, shape, and surface features of objects, utilizing optical principles and techniques to acquire measurement data. For example, in industrial production, optical measuring instruments can inspect the dimensional accuracy of parts, ensuring product quality meets standards. In scientific research, optical measuring instruments can be used to study microstructures or optical properties.

[0003] In the field of optical measurement, precise alignment of the workpiece is crucial for ensuring the accuracy of measurement results. While existing technologies are essential for measurement accuracy, they suffer from several shortcomings: some alignment devices rely on manual operation, resulting in low efficiency and large errors; others employ simple mechanical structures with insufficient transmission stability, making it difficult to guarantee alignment accuracy. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an auxiliary centering device for optical measuring instruments, which can achieve fast, accurate and intelligent centering, and improve the level of automation and production efficiency of optical measurement.

[0005] The present invention adopts the following technical solution:

[0006] An auxiliary alignment device for an optical measuring instrument includes a device body, which comprises a clamping mechanism, a laser alignment mechanism, and a controller. The clamping mechanism is located below the laser alignment mechanism and includes a rotary drive module, a clamping disk, and several clamps. The rotary drive module drives the clamping disk to rotate around a vertical axis. The clamps are used to clamp the workpiece to be measured. The laser alignment mechanism includes a moving module and an infrared laser. The moving module drives the infrared laser to move along the X and Y axes, and the infrared laser projects a crosshair onto the clamping disk. The controller is electrically connected to the rotary drive module, the moving module, and the infrared laser.

[0007] A further improvement to the above technical solution is that the rotary drive module includes a bracket, an electric push rod, a push plate, a first sliding transmission unit, a transmission gear, and a second sliding transmission unit; the electric push rod is fixed to the bracket, and its output end is fixedly connected to the push plate for driving the push plate to move linearly in the front-back direction; the push plate is connected to the first sliding transmission unit; the transmission gear is connected to the first sliding transmission unit and the second sliding transmission unit respectively.

[0008] A further improvement to the above technical solution is that the first sliding transmission unit includes a first sliding plate, a first rack, a first slider, and a first guide rod; the first sliding plate is fixedly connected to the upper end of the push plate; one end of the first rack is fixed to the first sliding plate, and the other end of the first rack is meshed with a transmission gear; multiple first sliders are provided, and multiple first sliders are connected to the lower part of the first sliding plate; the first guide rod slides with the first slider and is fixedly connected to the bracket.

[0009] A further improvement to the above technical solution is that the second sliding transmission unit includes a second rack, a second slide plate, a second slider, and a second guide rod; one end of the second rack is meshed with a transmission gear, and the other end of the second rack is fixed to the second slide plate; multiple second sliders are provided, and multiple second sliders are connected to the bottom of the second slide plate; the second guide rod slides with the second slider and is fixedly connected to the bracket.

[0010] A further improvement to the above technical solution is that the number of clamps is set to at least three, and the three clamps are evenly distributed circumferentially on the upper surface of the clamping disk.

[0011] A further improvement to the above technical solution is that the clamp includes a base, a clamping part, an arc-shaped push block, a push rod, and a knob; the base is installed above the clamping disc; the lower end of the clamping part is hinged to the base; the arc-shaped push block is located at one end of the base away from the clamping part; one end of the push rod abuts against the arc-shaped push block, and the other end of the push rod passes through the upper part of the base and abuts against the clamping part; the screw end of the knob passes through the arc-shaped push block and is screwed to the base.

[0012] A further improvement to the above technical solution is that the clamp further includes a return spring, one end of which is connected to the base and the other end of which is connected to the clamping part, for providing a return spring force to the clamping part.

[0013] A further improvement to the above technical solution is that the moving module includes a horizontal moving module and a vertical moving module; the horizontal moving module is used to drive the infrared laser to move along the X-axis direction, and the vertical moving module is used to drive the infrared laser to move along the Y-axis direction.

[0014] A further improvement to the above technical solution is that the device body also includes an optical measuring instrument, which is connected to a transverse slide rail. The transverse slide rail is used to slide the optical measuring instrument horizontally into or out of the clamping mechanism and the laser alignment mechanism.

[0015] A further improvement to the above technical solution is that the controller includes an image recognition module and a motion control module; the image recognition module is used to identify the positional deviation between the crosshair and the workpiece; the motion control module is used to generate control commands based on the positional deviation, drive the rotation drive module to adjust the workpiece angle, and drive the transverse guide rail to adjust the transverse position of the optical measuring instrument.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention achieves laser positioning and automatic centering through a clamping mechanism, a laser alignment mechanism, and a controller, while simultaneously calibrating the workpiece angle and position. The clamping disc can be rotated and its angle adjusted, and the infrared laser moves along the X / Y axes via a moving module to adapt to workpieces of different shapes and sizes. The double rack and pinion drive, three-point evenly distributed clamps, and spring reset design ensure deviation-free clamping and transmission processes. The controller's image recognition and motion control modules work together to provide real-time feedback and correct centering errors. In summary, this invention achieves fast, accurate, and intelligent centering, improving the automation level of optical measurement and production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the auxiliary centering device for the optical measuring instrument of this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the rotary drive module of the auxiliary centering device for optical measuring instruments;

[0020] Figure 3 for Figure 1 A schematic diagram of the fixture for an auxiliary centering device used in an optical measuring instrument;

[0021] Figure 4 for Figure 3 A top view of the fixture for the auxiliary centering device of an optical measuring instrument;

[0022] Figure 5 for Figure 4 A cross-sectional view of the clamp in the AA direction of the optical measuring instrument's auxiliary centering device;

[0023] Figure 6 for Figure 1 The flowchart shows the operation of the controller for the auxiliary centering device of the optical measuring instrument.

[0024] The numbers on the map are:

[0025] 10. Device body; 20. Clamping mechanism; 21. Clamping disc; 30. Laser alignment mechanism; 31. Infrared laser; 40. Controller; 41. Image recognition module; 42. Motion control module; 50. Rotation drive module; 51. Support; 52. Electric push rod; 53. Push plate; 54. Transmission gear; 60. Fixture; 61. Base; 62. Clamping part; 63. Arc-shaped push block; 64. Push rod; 65. Knob; 66. Screw end; 67. Return spring; 70. Moving module; 71. Lateral moving module; 72. Longitudinal moving module; 80. First sliding transmission unit; 81. First slide plate; 82. First rack; 83. First slider; 84. First guide rod; 90. Second sliding transmission unit; 91. Second rack; 92. Second slide plate; 93. Second slider; 94. Second guide rod. Detailed Implementation

[0026] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] like Figures 1 to 6The diagram illustrates an embodiment of this utility model, relating to an auxiliary alignment device for an optical measuring instrument. The device includes a main body 10, comprising a clamping mechanism 20, a laser alignment mechanism 30, and a controller 40. The clamping mechanism 20 is located below the laser alignment mechanism 30 and includes a rotary drive module 50, a clamping disk 21, and several clamps 60. The rotary drive module drives the clamping disk 21 to rotate around a vertical axis. The clamps 60 clamp the workpiece to be measured. The laser alignment mechanism 30 includes a moving module 70 and an infrared laser 31. The moving module 70 drives the infrared laser 31 to move along the X and Y axes, and the infrared laser 31 projects a crosshair onto the clamping disk 21. The controller 40 is electrically connected to the rotary drive module 50, the moving module 70, and the infrared laser 31.

[0030] Furthermore, the controller 40 integrates motion control and laser projection functions to improve centering efficiency and accuracy.

[0031] Furthermore, the rotary drive module 50 includes a bracket 51, an electric push rod 52, a push plate 53, a first sliding transmission unit 80, a transmission gear 54, and a second sliding transmission unit 90. The electric push rod 52 is fixed to the bracket 51, and its output end is fixedly connected to the push plate 53, for driving the push plate 53 to move linearly in the front-back direction. The push plate 53 is connected to the first sliding transmission unit 80. The transmission gear 54 is connected to both the first sliding transmission unit 80 and the second sliding transmission unit 90. Specifically, the electric push rod 52 drives the push plate 53 to move linearly, which, in conjunction with the sliding transmission unit and the gear, ensures the stable rotation of the clamping disc 21 and reduces mechanical vibration. The bracket 51 is integrated with the transmission components, occupying little space.

[0032] Further, the first sliding transmission unit 80 includes a first sliding plate 81, a first rack 82, a first slider 83, and a first guide rod 84; the first sliding plate 81 is fixedly connected to the upper end of the push plate 53; one end of the first rack 82 is fixed to the first sliding plate 81, and the other end of the first rack 82 is meshed with the transmission gear 54; multiple first sliders 83 are provided, and multiple first sliders 83 are connected below the first sliding plate 81; the first guide rod 84 slides with the first slider 83 and is fixedly connected to the bracket 51. Specifically, the sliding engagement of the first slider 83 and the first guide rod 84 ensures that the push plate 53 moves without deviation, improving transmission accuracy; the meshing of the first rack 82 with the transmission gear 54 converts linear motion into rotational motion, ensuring stable torque transmission.

[0033] Further, the second sliding transmission unit 90 includes a second rack 91, a second slide plate 92, a second slider 93, and a second guide rod 94; one end of the second rack 91 is meshed with the transmission gear 54, and the other end of the second rack 91 is fixed to the second slide plate 92; multiple second sliders 93 are provided, and multiple second sliders 93 are connected below the second slide plate 92; the second guide rod 94 slides with the second sliders 93 and is fixedly connected to the bracket 51. Specifically, the second sliding transmission unit 90 and the first sliding transmission unit 80 are symmetrically arranged to balance the transmission load and avoid gear overload; the double rack structure ensures that the force on both sides is uniform when the clamping disk 21 rotates, reducing rotational deviation.

[0034] Furthermore, the number of clamps 60 is set to at least three, and the three clamps 60 are evenly distributed circumferentially on the upper surface of the clamping disk 21. Specifically, the at least three circumferentially distributed clamps 60 form a three-point support to ensure that the workpiece remains balanced when rotating; it can clamp circular or irregularly shaped workpieces of different diameters, effectively expanding the application scenarios.

[0035] Further, the fixture 60 includes a base 61, a clamping part 62, an arc-shaped push block 63, a push rod 64, and a knob 65; the base 61 is mounted above the clamping disc 21; the lower end of the clamping part 62 is hinged to the base 61; the arc-shaped push block 63 is located at one end of the base 61 away from the clamping part 62; one end of the push rod 64 abuts against the arc-shaped push block 63, and the other end of the push rod 64 passes through the upper part of the base 61 and abuts against the clamping part 62; the screw end 66 of the knob 65 passes through the arc-shaped push block 63 and is screwed to the base 61. Specifically, by rotating the knob 65, the screw end 66 passes through the arc-shaped push block 63 and is screwed to the base 61, pushing the arc-shaped push block 63 to move, thereby causing the push rod 64 to abut against and drive the clamping part 62 to rotate around the hinge point of the base 61, thereby clamping the workpiece.

[0036] Furthermore, the clamp 60 also includes a return spring 67, one end of which is connected to the base 61, and the other end of which is connected to the clamping part 62, for providing a return force to the clamping part 62. Specifically, the return spring 67 ensures that the clamping part 62 automatically returns to its original position after being released, facilitating the next clamping; the spring force can be indirectly adjusted via the knob 65 to adapt to workpieces of different materials.

[0037] Furthermore, the moving module 70 includes a lateral moving module 71 and a longitudinal moving module 72; the lateral moving module 71 is used to drive the infrared laser 31 to move along the X-axis, and the longitudinal moving module 72 is used to drive the infrared laser 31 to move along the Y-axis. Specifically, the lateral moving module 70 and the longitudinal moving module 70 are driven independently to achieve precise positioning of the infrared laser 31 and improve the accuracy of the centering baseline; they can also dynamically adjust the laser projection position according to the workpiece position to adapt to complex measurement needs.

[0038] Furthermore, the device body 10 also includes an optical measuring instrument (not shown in the figure), which is connected to a transverse slide rail (not shown in the figure). The transverse slide rail (not shown in the figure) is used to slide the optical measuring instrument (not shown in the figure) horizontally into or out of the clamping mechanism 20 and the laser alignment mechanism 30. Specifically, the optical measuring instrument (not shown in the figure) can be moved out of the measurement area via the transverse slide rail (not shown in the figure), which facilitates workpiece clamping or equipment maintenance; the slide rail design avoids direct collision between the measuring instrument and the fixture 60, improving the safety of equipment operation.

[0039] Furthermore, the controller 40 includes an image recognition module 41 and a motion control module 42. The image recognition module 41 is used to identify the positional deviation between the crosshair reference line and the workpiece. The motion control module 42 is used to generate control commands based on the positional deviation, drive the rotation drive module 50 to adjust the workpiece angle, and drive the transverse guide rail to adjust the transverse position of the optical measuring instrument. Specifically, the image recognition module 41 detects the deviation between the crosshair reference line and the workpiece in real time, and the motion control module 42 automatically adjusts the angle and position to achieve fully automatic centering, effectively reducing manual intervention and shortening the measurement preparation time.

[0040] The working principle of this utility model is as follows:

[0041] 1. The operator places the workpiece to be tested on the clamping disc 21 and uses at least three clamps 60 evenly distributed around the circumference to fix the workpiece.

[0042] 2. The controller 40 activates the moving module 70 of the laser alignment mechanism 30, which includes a horizontal moving module 71 and a vertical moving module 72. The horizontal moving module 71 drives the infrared laser 31 to move along the X-axis, and the vertical moving module 72 drives the infrared laser 31 to move along the Y-axis, adjusting the infrared laser 31 to a suitable position so that it projects a crosshair onto the clamping disk 21.

[0043] 3. The image recognition module 41 starts working, detecting the positional deviation between the crosshair reference line and the workpiece. The motion control module 42 generates control commands based on this positional deviation. If the workpiece angle needs to be adjusted, the control commands will drive the rotary drive module 50 to work; the electric push rod 52 pushes the push plate 53 to move linearly in the front-back direction, and the push plate 53 drives the first slide plate 81 of the first sliding transmission unit 80 to move. The first rack 82 on the first slide plate 81 meshes with the transmission gear 54, converting the linear motion into rotational motion. At the same time, the transmission gear 54 drives the second rack 91 and the second slide plate 92 of the second sliding transmission unit 90 to move, causing the clamping disk 21 to rotate around the vertical axis, thereby adjusting the workpiece angle. If the lateral position needs to be adjusted, the motion control module 42 drives the lateral movement module 71 to move the infrared laser 31 along the X-axis. It can also drive the optical measuring instrument (not shown in the figure) to move horizontally through the lateral slide rail (not shown in the figure) to achieve precise centering.

[0044] 4. Once the crosshair is precisely aligned with the workpiece, slide the optical measuring instrument (not shown in the figure) between the clamping mechanism 20 and the laser alignment mechanism 30 via the transverse slide rail (not shown in the figure) to begin optical measurement of the workpiece. After measurement, the optical measuring instrument (not shown in the figure) can be moved out along the transverse slide rail (not shown in the figure) for easy replacement of the workpiece for the next measurement.

[0045] This invention achieves laser positioning and automatic centering through a clamping mechanism 20, a laser alignment mechanism 30, and a controller 40, while simultaneously calibrating the workpiece angle and position. The clamping disc 21 can be rotated to adjust its angle, and the infrared laser 31 moves along the X / Y axis via a moving module 70 to adapt to workpieces of different shapes and sizes. The double rack and pinion drive, the three-point evenly distributed clamp 60, and the spring reset design ensure that there is no deviation in the clamping and transmission process. The image recognition and motion control module 42 of the controller 40 work together to provide real-time feedback and correct centering errors. In summary, this invention achieves fast, accurate, and intelligent centering, improving the level of automation in optical measurement and production efficiency.

[0046] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. An auxiliary centering device for an optical measuring instrument, characterized in that, The device includes a main body, which comprises a clamping mechanism, a laser alignment mechanism, and a controller. The clamping mechanism is located below the laser alignment mechanism and includes a rotary drive module, a clamping disk, and several fixtures. The rotary drive module drives the clamping disk to rotate around a vertical axis. The fixtures clamp the workpiece to be measured. The laser alignment mechanism includes a moving module and an infrared laser. The moving module drives the infrared laser to move along the X and Y axes, and the infrared laser projects a crosshair onto the clamping disk. The controller is electrically connected to the rotary drive module, the moving module, and the infrared laser. The rotary drive module includes a bracket, an electric push rod, a push plate, a first sliding transmission unit, a transmission gear, and a second sliding transmission unit. The electric push rod is fixed to the bracket, and its output end is fixedly connected to the push plate to drive the push plate to move linearly in the front-back direction. The push plate is connected to the first sliding transmission unit. The transmission gear is connected to the first sliding transmission unit and the second sliding transmission unit respectively.

2. The auxiliary centering device for an optical measuring instrument according to claim 1, characterized in that, The first sliding transmission unit includes a first sliding plate, a first rack, a first slider, and a first guide rod; the first sliding plate is fixedly connected to the upper end of the push plate; one end of the first rack is fixed to the first sliding plate, and the other end of the first rack is meshed with a transmission gear; multiple first sliders are provided, and multiple first sliders are connected to the lower part of the first sliding plate; the first guide rod slides with the first slider and is fixedly connected to the bracket.

3. The auxiliary centering device for an optical measuring instrument according to claim 1, characterized in that, The second sliding transmission unit includes a second rack, a second slide plate, a second slider, and a second guide rod; one end of the second rack is meshed with a transmission gear, and the other end of the second rack is fixed to the second slide plate; multiple second sliders are provided, and multiple second sliders are connected to the bottom of the second slide plate; the second guide rod slides with the second slider and is fixedly connected to the bracket.

4. The auxiliary centering device for an optical measuring instrument according to claim 1, characterized in that, The number of clamps is set to at least three, and the three clamps are evenly distributed circumferentially on the upper surface of the clamping disk.

5. The auxiliary centering device for an optical measuring instrument according to claim 4, characterized in that, The clamp includes a base, a clamping part, an arc-shaped push block, a push rod, and a knob; the base is installed above the clamping disc; the lower end of the clamping part is hinged to the base; the arc-shaped push block is located at one end of the base away from the clamping part; one end of the push rod abuts against the arc-shaped push block, and the other end of the push rod passes through the upper part of the base and abuts against the clamping part; the screw end of the knob passes through the arc-shaped push block and is screwed to the base.

6. The auxiliary centering device for an optical measuring instrument according to claim 5, characterized in that, The clamp also includes a return spring, one end of which is connected to the base and the other end of which is connected to the clamping part, for providing a return spring force to the clamping part.

7. The auxiliary centering device for an optical measuring instrument according to claim 1, characterized in that, The moving module includes a horizontal moving module and a vertical moving module; the horizontal moving module is used to drive the infrared laser to move along the X-axis, and the vertical moving module is used to drive the infrared laser to move along the Y-axis.

8. The auxiliary centering device for an optical measuring instrument according to claim 1, characterized in that, The device body also includes an optical measuring instrument, which is connected to a transverse slide rail. The transverse slide rail is used to slide the optical measuring instrument horizontally into or out of the clamping mechanism and the laser alignment mechanism.

9. The auxiliary centering device for an optical measuring instrument according to claim 1, characterized in that, The controller includes an image recognition module and a motion control module; the image recognition module is used to identify the positional deviation between the crosshair and the workpiece; the motion control module is used to generate control commands based on the positional deviation, drive the rotation drive module to adjust the workpiece angle, and drive the transverse guide rail to adjust the transverse position of the optical measuring instrument.

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