Measuring fixing device for optical measuring instrument

Abstract

The utility model relates to the field of optical measuring instrument auxiliary equipment, in particular to a measurement fixing device for an optical measuring instrument, which comprises a fixed clamping mechanism, the optical measuring instrument, a workbench and a moving mechanism. The fixed clamping mechanism is used for clamping a workpiece to be detected, the fixed clamping mechanism comprises a plurality of clamp modules, a lifting module and a supporting table, the clamp modules are connected to the upper portion of the lifting module, the lifting module is used for driving the clamp modules to ascend and descend, and the supporting table is fixedly connected to the lower portion of the lifting module; the optical measuring instrument is arranged above the moving mechanism; the workbench is connected with the fixed clamping mechanism and the moving mechanism. The moving mechanism comprises a moving frame and a first moving guide rail. The utility model provides a measuring and fixing device for an optical measuring instrument, which solves the problems of unstable clamping, low lifting precision and limited moving range of the conventional device, and improves the precision and efficiency of optical measurement.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical measuring instrument auxiliary equipment field especially, it is a kind of optical measuring instrument with measurement fixing device. BACKGROUND

[0002] Optical measuring instrument is a kind of instrument equipment for carrying out optical measurement. It is usually applied to the accurate measurement of the size, shape, surface feature etc. of object, and measurement data is obtained using optical principle and technology. For example, in industrial production, optical measuring instrument can detect the dimensional accuracy of parts, to ensure that product quality meets the standard. In scientific research field, optical measuring instrument can be used for the research of microstructure or optical characteristics.

[0003] In the field of optical measurement, measurement fixing device needs to ensure that workpiece is clamped stably and measurement position is accurate. The traditional measurement fixing device has the following shortcomings: the clamping mechanism layout is unreasonable, it is difficult to form uniform and stable clamping to workpiece, which leads to measurement reference deviation; for the measurement demand of workpiece of different heights, the lifting structure usually adopts simple straight-line driving, and the lifting process is easy to shake, so it is difficult to accurately adjust the height of workpiece, and it is difficult to meet the high-precision measurement demand; the moving range of measuring instrument is limited, and it is difficult to meet the multi-angle scanning demand of complex workpiece. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of optical measuring instrument with measurement fixing device, to solve the problems of existing device clamping instability, low lifting precision and limited moving range, and improve the precision and efficiency of optical measurement.

[0005] The utility model adopts the following technical solutions:

[0006] A kind of optical measuring instrument with measurement fixing device, including device body, the device body includes fixed clamping mechanism, optical measuring instrument, workbench and moving mechanism;The fixed clamping mechanism is used to clamp workpiece to be measured, and the fixed clamping mechanism includes several clamp modules, lifting module and support table, the several clamp modules are connected to the upper of lifting module, the lifting module is used to drive clamp module to lift, the support table is fixedly connected to the lower of lifting module;The optical measuring instrument is located in the upper of moving mechanism;The workbench is connected with fixed clamping mechanism and moving mechanism respectively;The moving mechanism includes moving frame, first moving guide rail, the moving frame is used to drive optical measuring instrument to move to the upper of fixed clamping mechanism along first moving guide rail, to scan and measure workpiece to be measured.

[0007] Further improvement to the above technical solution is that the clamp module is connected with clamp bottom plate, and the several clamp modules are distributed circumferentially on the upper surface of the clamp bottom plate.

[0008] Further improvement of the above technical solution is that the number of the clamp modules is three, the clamp module comprises a push-pull air cylinder, a clamping jaw block and a base; the push-pull air cylinder is used to drive the clamping jaw block to clamp the workpiece to be measured; the clamping jaw block is hinged to the output end of the push-pull air cylinder to drive the clamping jaw block to open and close through the extension and retraction of the push-pull air cylinder; and the base is arranged above the clamp base plate and is hinged to the lower side of the clamping jaw block.

[0009] Further improvement of the above technical solution is that the lifting module comprises a connecting base plate, a scissor type lifting assembly and a bearing platform; the connecting base plate is fixedly connected to the upper side of the support table; the scissor type lifting assembly is connected between the connecting base plate and the bearing platform and is used to drive the bearing platform to lift.

[0010] Further improvement of the above technical solution is that the lifting module further comprises a driving device connected with the scissor type lifting assembly and used to drive the scissor type lifting assembly to expand or contract, and the driving device is one or more of an air cylinder, a hydraulic cylinder or an electric push rod.

[0011] Further improvement of the above technical solution is that the scissor type lifting assembly comprises a plurality of scissor arm groups, each group of scissor arms is hinged through a rotating shaft, and adjacent scissor arm groups are cross matched to form an extendable support structure.

[0012] Further improvement of the above technical solution is that the upper side of the connecting base plate is provided with a first guide assembly, the first guide assembly comprises a first guide rail and a first sliding block, the first sliding block is fixedly connected to the lower side of the scissor type lifting assembly, and the first guide rail is fixed to the upper side of the connecting base plate and is connected with the first sliding block.

[0013] Further improvement of the above technical solution is that the bottom of the bearing platform is provided with a second guide assembly, the second guide assembly comprises a second guide rail and a second sliding block, the second sliding block is fixedly connected to the upper side of the scissor type lifting assembly, and the second guide rail is fixed to the bottom of the bearing platform and is connected with the second sliding block.

[0014] Further improvement of the above technical solution is that the number of the first moving guide rails is two, the two ends of the moving frame are movably connected to the two first moving guide rails, a mounting frame for mounting the optical measuring instrument is connected to the upper side of the moving frame, the two ends of the mounting frame are movably connected with second moving guide rails, respectively, and the two second moving guide rails are fixedly connected to the two ends of the moving frame, respectively, and the second moving guide rails are arranged perpendicularly to the first moving guide rails.

[0015] Further improvement of the above technical solution is that one side of the mounting frame is connected with a fastening assembly; the fastening assembly comprises an L-shaped block, a handle and a screw; the upper end of the L-shaped block is connected to the mounting frame, the handle is a butterfly-shaped handle, the screw is driven to extend or retract by rotating the butterfly-shaped handle, and quick fastening or loosening operation is realized; one end of the screw is fixedly connected with the handle, and the other end of the screw penetrates through the L-shaped block and is used for abutting against the moving frame or the to-be-fixed component matched with the moving frame.

[0016] The utility model discloses the beneficial effects are:

[0017] The utility model discloses through the clamp module of circumferential distribution realizes stable clamping, and scissor -like lifting subassembly cooperation guiding component guarantees the lifting precision, and double guide rail moving mechanism expands the measurement range, and diversified drive arrangement and quick fastening assembly promote applicability and operation convenience, finally realize the accurate clamping of the workpiece to be measured, the lifting adjustment and the flexible movement measurement of optical measuring appearance, and the measurement efficiency and precision are improved significantly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of measurement fixed device for optical measuring appearance of the utility model;

[0019] Figure 2 It is the structural schematic diagram of measurement fixed device for optical measuring appearance of the utility model from another angle; Figure 1

[0020] Figure 3 It is the partial close -up view of circle A of measurement fixed device for optical measuring appearance of the utility model; Figure 2

[0021] Figure 4 It is the structural schematic diagram of fixed clamping mechanism of measurement fixed device for optical measuring appearance of the utility model; Figure 1

[0022] Figure 5 It is the structural schematic diagram of clamp module of fixed clamping mechanism of the utility model; Figure 4

[0023] Figure 6 It is the structural schematic diagram of lifting module of fixed clamping mechanism of the utility model. Figure 4 Marked in the figure is:

[0024]

[0025] ​​​​​10, device body; 11, optical measuring instrument; 12, workbench; 13, clamp base plate; 20, fixed clamping mechanism; 21, support table; 30, moving mechanism; 31, moving frame; 32, first moving guide rail; 33, mounting frame; 34, second moving guide rail; 40, clamp module; 41, push-pull cylinder; 42, clamping jaw block; 43, base; 50, lifting module; 51, connecting base plate; 52, bearing platform; 53, driving device; 60, scissor lifting assembly; 61, scissor arm group; 70, first guide assembly; 71, first guide rail; 72, first sliding block; 80, second guide assembly; 81, second guide rail; 82, second sliding block; 90, fastening assembly; 91, L-shaped block; 92, handle; 93, screw. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be pointed out that the orientations or positional relationships indicated by the terms "vertical direction", "upper", "lower", "horizontal" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] As Figures 1 to 6As shown, it relates to a kind of measurement fixing device for optical measuring instrument 11, including device ontology 10, the device ontology 10 includes fixed clamping mechanism 20, optical measuring instrument 11, workbench 12 and moving mechanism 30;The fixed clamping mechanism 20 is used to clamp the workpiece to be measured, and the fixed clamping mechanism 20 includes several fixture modules 40, lifting module 50 and support table 21, the several fixture modules 40 are connected to the upper portion of lifting module 50, the lifting module 50 is used to drive fixture module 40 to lift, the support table 21 is fixedly connected to the lower portion of lifting module 50;The optical measuring instrument 11 is located in the upper portion of moving mechanism 30;The workbench 12 is respectively connected with fixed clamping mechanism 20, moving mechanism 30;The moving mechanism 30 includes moving frame 31, first moving guide rail 32, the moving frame 31 is used to drive optical measuring instrument 11 to move to the upper portion of fixed clamping mechanism 20 along first moving guide rail 32, to carry out scanning measurement to the workpiece to be measured.

[0030] Specifically, by the cooperative setting of fixed clamping mechanism 20, optical measuring instrument 11, workbench 12 and moving mechanism 30, the whole process coverage from clamping fixation to accurate measurement of the workpiece to be measured is realized. Among them, the fixed clamping mechanism 20 adjusts the height of the workpiece by lifting module 50, adapts to different measurement height requirements;Moving mechanism 30 drives optical measuring instrument 11 to move to the upper portion of fixed clamping mechanism 20, ensures the accurate positioning of measurement position, avoids artificial alignment error;Workbench 12 as a basic support structure provides stable installation platform for each component. Compact and reasonable overall layout not only meets the needs of automatic measurement process, but also improves the versatility of the device through modular design, and can be widely used in optical measurement scene of different specifications of workpiece, significantly improves the measurement efficiency and position accuracy.

[0031] Further, the number of the first moving guide rails 32 is two, and the two ends of the moving frame 31 are movably connected to the two first moving guide rails 32. An installation frame 33 for installing the optical measuring instrument 11 is connected to the top of the moving frame 31. The two ends of the installation frame 33 are movably connected to the second moving guide rails 34, respectively, and the two second moving guide rails 34 are fixedly connected to the two ends of the moving frame 31, respectively. The second moving guide rails 34 are arranged perpendicularly to the first moving guide rails 32. Specifically, the two first moving guide rails 32 provide stable support for the moving frame 31, reduce the risk of deviation that may occur in a single guide rail, and ensure the stability of the optical measuring instrument 11 in the X direction. The second moving guide rails 34 arranged perpendicularly allow the installation frame 33 to move in the Y direction, and form a two-dimensional moving space in cooperation with the first moving guide rails 32, thereby expanding the coverage range of the optical measuring instrument 11. The installation frame 33 is flexibly connected to the optical measuring instrument 11, and the position of the measuring instrument can be adjusted according to the measurement requirements of the workpiece. This is especially suitable for multi-angle scanning of workpieces with complex profiles, and improves the measurement flexibility and functionality of the device, thereby meeting the diversified industrial measurement requirements.

[0032] Further, one side of the installation frame 33 is connected to a fastening assembly 90. The fastening assembly 90 includes an L-shaped block 91, a handle 92, and a screw 93. The upper end of the L-shaped block 91 is connected to the installation frame 33. The handle 92 is a butterfly-shaped handle 92, and the screw is driven to extend or retract by rotating the butterfly-shaped handle 92, thereby realizing quick fastening or loosening operation. One end of the screw 93 is fixedly connected to the handle 92, and the other end of the screw 93 penetrates through the L-shaped block 91 and is used to abut against the moving frame 31 or a component to be fixed that cooperates with the moving frame 31. Specifically, the butterfly-shaped handle 92 drives the screw 93 to extend or retract by rotating, and quick fastening or loosening operation can be realized without the need for additional tools. When adjusting the position of the optical measuring instrument 11, the relative position of the installation frame 33 and the moving frame 31 can be conveniently adjusted, and after the optimal measurement position is determined, the screw 93 is used to abut against and fix, thereby ensuring that the measuring instrument does not displace during work. This design improves the debugging efficiency and use flexibility of the device, is convenient for later maintenance and repair, reduces the downtime of the equipment, and enhances the practicality in industrial applications. In some embodiments, the fastening assembly 90 can also be connected to the moving frame 31 and the workbench 12, so as to ensure that the moving frame 31 does not displace during work.

[0033] Further, the clamp module 40 is connected with a clamp bottom plate 13, and the plurality of clamp modules 40 are distributed circumferentially on the upper surface of the clamp bottom plate 13. Specifically, the clamp modules 40 are distributed circumferentially on the upper surface of the clamp bottom plate 13, and can form uniform clamping force around the center of the workpiece. For a circular or symmetrical structure workpiece, the circumferentially distributed clamp modules 40 can synchronously apply clamping force, realize workpiece center positioning, avoid clamping deviation or tilting, and ensure that the workpiece remains stable in the reference position during the measurement process. At the same time, the clamp bottom plate 13 provides a unified installation reference for the clamp modules 40, optimizes the rationality of module layout, and further improves the stability of the overall clamping structure, providing a reliable workpiece fixing basis for optical measurement.

[0034] Further, the number of the clamp module 40 is three, and the clamp module 40 includes a push-pull air cylinder 41, a clamp jaw block 42, and a base 43. The push-pull air cylinder 41 is used to drive the clamp jaw block 42 to clamp the workpiece to be measured. The clamp jaw block 42 is hinged to the output end of the push-pull air cylinder 41, so as to drive the clamp jaw block 42 to open and close through the extension and retraction of the push-pull air cylinder 41. The base 43 is arranged above the clamp bottom plate 13 and is hinged to the lower side of the clamp jaw block 42. Specifically, the three clamp modules 40 are distributed in a triangular manner, and utilize the triangular stability principle to form a balanced clamping force layout, effectively resisting the shaking or displacement of the workpiece during the measurement process. The push-pull air cylinder 41 as a power source has the characteristics of fast response speed and high control precision, and is suitable for the demand of automatic production line. The hinge design of the clamp jaw block 42 with the output end of the push-pull air cylinder 41 and the base 43 enables the clamp jaw block 42 to flexibly adjust the angle during the opening and closing process, adapt to the clamping demand of workpieces with different shapes, and expand the application range of the device. In addition, the clamping force driven by the air cylinder is stable, which can reduce the damage to the surface of the workpiece and improve the clamping reliability.

[0035] Further, the lifting module 50 includes a connecting bottom plate 51, a scissor-type lifting assembly 60, and a bearing platform 52. The connecting bottom plate 51 is fixedly connected to the upper side of the support table 21. The scissor-type lifting assembly 60 is connected between the connecting bottom plate 51 and the bearing platform 52, and is used to drive the bearing platform 52 to lift. Specifically, the scissor-type lifting assembly 60 is connected between the connecting bottom plate 51 and the bearing platform 52, and utilizes the cross support structure of the scissor arm to uniformly disperse the weight of the bearing platform 52 and the workpiece during the lifting process, ensuring smooth and stable lifting movement. The connecting bottom plate 51 is fixed to the upper side of the support table 21, providing a stable base for the lifting mechanism. The bearing platform 52 is used to install the clamp module 40, and vertically moves under the drive of the lifting mechanism, which can accurately adjust the height of the workpiece, meet the scanning demand of the optical measuring instrument 11 at different heights, and is especially suitable for scenarios requiring multi-angle layered measurement, improving the height adaptability of the measurement process.

[0036] Further, the lifting module 50 further comprises a driving device 53 connected with the scissor lifting assembly 60 for driving the scissor lifting assembly 60 to expand or contract, the driving device 53 being one or more of a pneumatic cylinder, a hydraulic cylinder or an electric push rod. Specifically, the driving device 53 is selected to be one or more of a pneumatic cylinder, a hydraulic cylinder or an electric push rod, which can be adaptively applied to different industrial scenarios. For example, the electric push rod has the advantage of high-precision displacement control and is suitable for measurement scenarios with extremely high lifting precision requirements; the hydraulic cylinder can provide large driving force to meet the lifting requirements of heavy workpieces; and the pneumatic cylinder has the characteristics of low cost, easy maintenance and fast response speed, and is suitable for high-speed automatic measurement lines. The diversified driving options make the lifting module 50 flexible to be applied to different working conditions, significantly expand the industrial applicability of the device, and improve the cost performance of the equipment.

[0037] Further, the scissor lifting assembly 60 comprises a plurality of scissor arm groups 61, each group of scissor arms being hinged through a rotating shaft, and the adjacent scissor arm groups 61 are cross-fitted to form a telescopic support structure. Specifically, during the expansion or contraction process, the scissor arm groups 61 are flexibly rotated through the rotating shaft to ensure the mechanical balance within the lifting stroke range, which not only ensures the stability of the lifting of the bearing platform 52, but also realizes the height adjustment of a larger stroke. In addition, the cross-fitted structure design makes the mechanism bear stress evenly during lifting, reduces local stress concentration, prolongs the service life of the mechanism, and reduces maintenance costs.

[0038] Further, the upper side of the connecting bottom plate 51 is provided with a first guide assembly 70, the first guide assembly 70 comprising a first guide rail 71 and a first sliding block 72, the first sliding block 72 being fixedly connected with the lower side of the scissor lifting assembly 60, and the first guide rail 71 being fixed to the upper side of the connecting bottom plate 51 and connected with the first sliding block 72. Specifically, the first guide rail 71 of the first guide assembly 70 cooperates with the first sliding block 72 to provide accurate guidance for the movement of the lower side of the scissor lifting assembly 60. During lifting, the first sliding block 72 moves linearly along the first guide rail 71, effectively constraining the lateral displacement of the scissor mechanism, ensuring that the lifting movement is strictly along the vertical direction, and avoiding the position deviation of the workpiece caused by shaking. This guide structure improves the movement precision of the lifting module 50, and indirectly ensures the position accuracy of the optical measuring instrument 11 during scanning.

[0039] Further, the bottom of the bearing platform 52 is provided with a second guide assembly 80, which comprises a second guide rail 81 and a second sliding block 82, the second sliding block 82 is fixedly connected with the upper part of the scissor lifting assembly 60, and the second guide rail 81 is fixed to the bottom of the bearing platform 52 and connected with the second sliding block 82. Specifically, the second guide assembly 80 is arranged at the bottom of the bearing platform 52, and the movement track of the scissor lifting assembly 60 is constrained from the top through the cooperation of the second guide rail 81 and the second sliding block 82. The first guide assembly 70 forms an up-down bidirectional guide constraint, which further eliminates the shaking or deflection that may occur during lifting, so that the bearing platform 52 always maintains a horizontal lifting state. The bidirectional guide design significantly improves the stability of the lifting module 50, provides a more reliable workpiece height adjustment function for optical measurement, and ensures the accuracy of measurement data.

[0040] The utility model discloses through the clamp module 40 of circumferential distribution realizes stable clamping, and scissor lifting assembly 60 cooperates with guide assembly and guarantees lifting precision, and double guide rail moving mechanism 30 expands the measurement range, and the diversified driving device 53 and quick fastening assembly 90 promote applicability and operation convenience, finally realize the accurate clamping of the workpiece to be measured, lifting adjustment and flexible movement measurement of optical measuring instrument 11, and significantly improve the measurement efficiency and precision.

[0041] The above only expresses the preferred technical scheme of the utility model, and the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, and the utility model also intends to include these changes and modifications.

Claims

1. A measuring fixture for an optical measuring instrument, characterized in that The device body comprises a fixed clamping mechanism, an optical measuring instrument, a workbench and a moving mechanism; the fixed clamping mechanism is used for clamping a workpiece to be measured, and comprises a plurality of clamp modules, a lifting module and a support table, the plurality of clamp modules are connected above the lifting module, the lifting module is used for driving the clamp modules to lift, and the support table is fixedly connected below the lifting module; the optical measuring instrument is arranged above the moving mechanism; the workbench is connected with the fixed clamping mechanism and the moving mechanism respectively; the moving mechanism comprises a moving frame and a first moving guide rail, the moving frame is used for driving the optical measuring instrument to move along the first moving guide rail to above the fixed clamping mechanism, so as to scan and measure the workpiece to be measured.

2. The measurement fixing device for an optical measuring instrument according to claim 1, characterized by The clamp module is connected with a clamp bottom plate, and the plurality of clamp modules are distributed circumferentially on the upper surface of the clamp bottom plate.

3. The measurement fixing device for an optical measuring instrument according to claim 2, characterized in that, The number of the clamp modules is three, and the clamp module comprises a push-pull air cylinder, a clamping jaw block and a base; the push-pull air cylinder is used for driving the clamping jaw block to clamp the workpiece to be measured; the clamping jaw block is hinged to the output end of the push-pull air cylinder, so as to drive the clamping jaw block to open and close through the extension and contraction of the push-pull air cylinder; and the base is arranged above the clamp bottom plate and is hinged to the lower side of the clamping jaw block.

4. The measurement fixing device for an optical measuring instrument according to claim 1, characterized by The lifting module comprises a connecting bottom plate, a scissor type lifting assembly and a bearing platform; the connecting bottom plate is fixedly connected above the support table; the scissor type lifting assembly is connected between the connecting bottom plate and the bearing platform, and is used for driving the bearing platform to lift.

5. The measuring fixture for optical measuring instruments according to claim 4, characterized in that The lifting module further comprises a driving device connected with the scissor type lifting assembly, which is used for driving the scissor type lifting assembly to expand or contract, and the driving device is one or more of an air cylinder, a hydraulic cylinder or an electric push rod.

6. The measurement fixing device for an optical measuring instrument according to claim 4, wherein The scissor type lifting assembly comprises a plurality of scissor arm groups, each group of scissor arms is hinged through a rotating shaft, and adjacent scissor arm groups are cross-connected to form a telescopic support structure.

7. The measurement fixing device for an optical measuring instrument according to claim 4, wherein A first guide assembly is arranged above the connecting bottom plate, the first guide assembly comprises a first guide rail and a first sliding block, the first sliding block is fixedly connected with the lower side of the scissor type lifting assembly, and the first guide rail is fixedly connected with the upper side of the connecting bottom plate and connected with the first sliding block.

8. The measurement fixing device for an optical measuring instrument according to claim 4, wherein A second guide assembly is arranged on the bottom of the bearing platform, the second guide assembly comprises a second guide rail and a second sliding block, the second sliding block is fixedly connected with the upper side of the scissor type lifting assembly, and the second guide rail is fixedly connected with the bottom of the bearing platform and connected with the second sliding block.

9. The measurement fixing device for an optical measuring instrument according to claim 1, wherein The number of the first moving guide rails is two, and the two ends of the moving frame are movably connected with the two first moving guide rails; an installation frame for installing the optical measuring instrument is arranged above the moving frame; two second moving guide rails are movably connected with the two ends of the installation frame respectively, and the two second moving guide rails are fixedly connected with the two ends of the moving frame respectively, and the second moving guide rails are arranged perpendicularly to the first moving guide rails.

10. The measuring fixture for optical measuring instruments according to claim 9, characterized in that One side of the mounting frame is connected with a fastening assembly; the fastening assembly comprises an L-shaped block, a handle and a screw; the upper end of the L-shaped block is connected to the mounting frame, the handle is a butterfly-shaped handle, the screw is driven to extend or retract by rotating the butterfly-shaped handle, and quick fastening or loosening operation is realized; one end of the screw is fixedly connected with the handle, and the other end of the screw penetrates through the L-shaped block and is used for abutting against the moving frame or the to-be-fixed component matched with the moving frame.

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