A water-guided laser water jet verticality measuring device

Abstract

This invention relates to the field of laser processing technology, specifically to a water-guided laser waterjet verticality measuring device. The device includes a worktable, a bracket fixedly mounted on the top of the worktable, an adjustment device mounted on the bracket, and a water-guided laser device connected to the adjustment device. The emitting end of the water-guided laser device is equipped with a retaining plate, and a vibration-damping retaining mechanism is provided between the retaining plate and the mounting plate. An automatic calibration mechanism is provided on the side of the mounting plate away from the retaining plate. This water-guided laser waterjet verticality measuring device, through the automatic calibration mechanism, integrates physical sensors such as pressure sensors and displacement sensors. Combined with air pressure detection and contact ball positioning, it can capture coaxiality deviation data generated during processing and assembly in real time. Deviation compensation is achieved through the synergistic action of the air pressure chamber, push rod, and splined shaft, accurately correcting the tilt problem of the waterjet emitting axis and significantly improving the accuracy and stability of the verticality measurement benchmark.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, specifically to a water-guided laser water jet verticality measuring device. Background Technology

[0002] Measuring the verticality of water-guided laser jets is a key technology for ensuring the accuracy of water-guided laser processing. Despite numerous challenges, advancements in optics, vision, and control technologies have provided a variety of measurement solutions. Future research will focus more on high precision, intelligence, and integration to meet the ever-increasing demands for precision machining. In the water-guided laser water jet verticality measurement device, the optical-water coupling processing head serves as the core of the water jet emission. Its tail needs to be rigidly connected to the multi-directional angle adjustment mechanism. The connection quality between the two directly determines the verticality of the water jet axis, which in turn affects the measurement accuracy of the water jet verticality. However, the existing connection structure lacks a matching physical sensor monitoring mechanism, which cannot capture changes in the connection status in real time, further exacerbating the difficulty of accuracy control.

[0003] In the existing technology, the connection between the optical-water coupling processing head and the multi-directional angle adjustment mechanism is mainly a bolt-fastened flange direct contact type or a welded fixed type. Both of these connection structures have significant technical defects: First, the bolt-fastened flange direct contact structure is prone to uneven force on the contact end face, and it is not equipped with force-sensitive or displacement-type physical sensors. When the processing head is subjected to the combined action of the recoil force of the high-pressure water jet and processing vibration, it cannot sense the force and displacement changes of the connection part in real time, which leads to the accumulation of micro-amplitude angular displacement and stress deformation, ultimately causing the water jet emission axis to tilt, the verticality measurement reference to shift, and the water jet angle deviation. Secondly, the welded fixed connection is a non-removable structure, which makes it impossible to maintain and replace the processing head, resulting in poor practicality. The bolt-fastened connection is prone to loosening under vibration conditions. Furthermore, neither of the two connection structures integrates physical sensors such as angle and coaxiality, lacking the sensing basis for mechanical error compensation. They cannot detect coaxiality deviations caused by processing and assembly in real time, nor do they have corresponding closed-loop compensation capabilities. Therefore, we propose a water-guided laser water jet verticality measurement device. Summary of the Invention

[0004] One of the technical problems to be solved in this application is: how to design a water-guided laser water jet verticality measuring device with automatic compensation function and easy disassembly and assembly.

[0005] To address the aforementioned technical problems, this application provides a water-guided laser water jet verticality measuring device, comprising a worktable, a bracket fixedly installed on the top of the worktable, an adjustment device mounted on the bracket, and a water-guided laser device connected to the adjustment device. The emitting end of the water-guided laser device is provided with a retaining plate, and the adjustment device is provided with a mounting plate corresponding to the retaining plate. A vibration damping retaining mechanism is provided between the retaining plate and the mounting plate, and an automatic calibration mechanism is provided on the side of the mounting plate away from the retaining plate.

[0006] In some embodiments, the vibration damping snap-fit ​​mechanism includes a wing plate disposed on the outside of the mounting plate, a telescopic column movably disposed on the inner side of the wing plate, a screw disposed at the bottom end of the telescopic column, a straight plate movably sleeved on the outer side of the screw and mounted on the outside of the snap-fit ​​plate, a nut being threaded on the outer side of the screw, and the top end of the nut being tightly fitted to the bottom of the straight plate.

[0007] In some embodiments, a fixed plate is provided on the top of the wing plate, a sliding rod is movably provided inside the fixed plate, an inclined block is provided at the end of the sliding rod, an inclined groove corresponding to the inclined block is opened on the inner side of the telescopic column, and a spring connected to the fixed plate and the inclined block is sleeved on the outer side of the sliding rod.

[0008] In some embodiments, the inclined surface of the inclined block is adapted to fit the inclined surface of the inclined groove, and the end of the inclined block away from the slide rod is provided with a rounded transition structure.

[0009] In some embodiments, a rubber folding tube is sleeved on the outer side of the spring, one end of the rubber folding tube is fixedly connected to the end face of the collar, and the other end is fixedly connected to the end face of the straight plate. The rubber folding tube has a retractable corrugated structure, and the telescopic column penetrates the interior of the rubber folding tube.

[0010] In some embodiments, a collar is sleeved on the outer side of the telescopic column, and a second spring connected to the collar is sleeved on the outer side of the telescopic column, with the top end of the second spring located at the bottom of the wing plate.

[0011] In some embodiments, the automatic calibration mechanism includes a pressure detection cylinder disposed on the mounting plate, an air cylinder disposed on the inner side of the mounting plate, a connecting pipe disposed between the air cylinder and the pressure detection cylinder, a pressure chamber disposed inside the pressure detection cylinder, a partition disposed inside the pressure chamber, and a connecting cavity disposed on the side of the partition away from the connecting pipe.

[0012] In some embodiments, a piston disc is movably disposed inside the air pressure chamber, a push rod penetrating a partition is disposed at the bottom end of the piston disc, a splined shaft penetrating an air cylinder is disposed at the bottom end of the push rod, and the outer side of the splined shaft is movably disposed inside the air cylinder.

[0013] In some embodiments, the bottom end of the spline shaft is provided with a contact ball, the top end of the retaining plate is provided with a mounting base, the top end of the mounting base is provided with an arc-shaped groove, and the outer side of the contact ball is movably disposed on the inner side of the arc-shaped groove.

[0014] The present invention has at least the following beneficial effects: 1. Through the set automatic calibration mechanism, physical sensors such as pressure sensors and displacement sensors are integrated. Combined with air pressure detection and contact ball positioning, the coaxiality deviation data generated during processing and assembly can be captured in real time. The deviation compensation is completed through the synergistic action of the air pressure chamber, push rod and spline shaft, and the tilt problem of the water jet emission axis is accurately corrected. This structure does not require additional manual intervention, makes up for the defects of existing connection structures that lack mechanical error compensation capability and lack effective sensing means, and significantly improves the accuracy and stability of the verticality measurement benchmark. 2. The rigid connection between the water-guided laser device and the adjustment device is achieved through a vibration-damping snap-fit ​​mechanism. The cooperation of the telescopic column, the inclined block and the spring can evenly fit the end face under force. The rubber folding cylinder can buffer the recoil force of the high-pressure water jet and the processing vibration, avoiding the generation of micro-angular displacement and stress deformation at the connection point. At the same time, the detachable snap-fit ​​structure solves the problems of non-maintainable welding and easy loosening of bolts, making it convenient to disassemble and replace the processing head, effectively ensuring the initial stability of the water jet emission axis, and providing a reliable benchmark for verticality measurement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the adjustment device, water-guided laser device, snap-fit ​​plate, and mounting plate of the present invention; Figure 3 This is a schematic diagram of the structure of the card plate, mounting plate, wing plate and telescopic column of the present invention; Figure 4 This is a schematic cross-sectional view of the card receiving plate of the present invention; Figure 5 This is an exploded structural diagram of the air cylinder, piston disc, splined shaft, and contact ball of the present invention; Figure 6 This is a structural schematic diagram of the wing plate, telescopic column, fixing plate and straight plate of the present invention; Figure 7 This is an exploded structural diagram of the telescopic column, fixing plate, inclined block and rubber folding tube of the present invention.

[0016] In the diagram: 1. Workbench; 2. Support; 3. Adjustment device; 4. Water-guided laser device; 5. Clip plate; 6. Mounting plate; 7. Vibration damping clip mechanism; 71. Wing plate; 72. Telescopic column; 73. Straight plate; 74. Collar; 75. Fixing plate; 76. Rubber folding tube; 77. Slide rod; 78. Spring 1; 79. Wedge block; 710. Wedge groove; 711. Screw; 712. Nut; 713. Spring 2; 8. Automatic calibration mechanism; 81. Air pressure detection cylinder; 82. Connecting pipe; 83. Air cylinder; 84. Air pressure chamber; 85. Partition plate; 86. Connecting cavity; 87. Mounting seat; 88. Contact ball; 89. Piston disc; 810. Splined shaft; 811. Arc groove; 812. Push rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1-7 The present invention provides a technical solution: a water-guided laser water jet verticality measuring device, including a worktable 1, a bracket 2 fixedly installed on the top of the worktable 1, an adjustment device 3 set on the bracket 2, and a water-guided laser device 4 connected to the adjustment device 3. The emitting end of the water-guided laser device 4 is provided with a retaining plate 5, and the adjustment device 3 is provided with a mounting plate 6 corresponding to the retaining plate 5. A vibration damping retaining mechanism 7 is provided between the retaining plate 5 and the mounting plate 6, and an automatic calibration mechanism 8 is provided on the side of the mounting plate 6 away from the retaining plate 5.

[0019] The vibration damping snap-fit ​​mechanism 7 includes a wing plate 71 disposed on the outside of the mounting plate 6, a telescopic column 72 movably disposed on the inner side of the wing plate 71, a screw 711 disposed at the bottom end of the telescopic column 72, a straight plate 73 movably sleeved on the outside of the screw 711 and mounted on the outside of the snap-fit ​​plate 5, a nut 712 threaded on the outside of the screw 711, and the top end of the nut 712 tightly fitting the bottom of the straight plate 73; Three sets of vibration damping clamping mechanisms 7 are evenly distributed around the clamping plate 5 and the mounting plate 6. Each set includes a wing plate 71 fixedly installed on the outside of the mounting plate 6. The wing plate 71 is fixed to the mounting plate 6 by welding. A sliding hole is opened on its inner side, and a telescopic column 72 is movably inserted into the sliding hole. The telescopic column 72 can slide along the axial direction of the sliding hole. A screw 711 is integrally formed at the bottom end of the telescopic column 72. The axis of the screw 711 is collinear with the axis of the telescopic column 72. A straight plate 73 is movably sleeved on the outside of the screw 711. The straight plate 73 is fixedly installed on the outside of the clamping plate 5 by bolts. The straight plate 73 has a through hole adapted to the screw 711 to ensure that the screw 711 can pass through freely. A nut 712 is threaded on the outside of the screw 711. The top of the nut 712 is tightly fitted to the bottom of the straight plate 73. The initial fixation of the telescopic column 72 and the straight plate 73 is achieved by locking the nut 712.

[0020] A fixed plate 75 is provided on the top of the wing plate 71. A sliding rod 77 is movably provided inside the fixed plate 75. An inclined block 79 is provided at the end of the sliding rod 77. An inclined groove 710 corresponding to the inclined block 79 is opened on the inner side of the telescopic column 72. A spring 78 connected to the fixed plate 75 and the inclined block 79 is sleeved on the outer side of the sliding rod 77. A fixing plate 75 is bolted to the top of the wing plate 71. A horizontally penetrating sliding cavity is opened inside the fixing plate 75. A sliding rod 77 is slidably fitted inside the sliding cavity. One end of the sliding rod 77 extends to the inner side of the wing plate 71 and is bolted to a wedge block 79. A groove 710 is opened on the inner wall of the telescopic column 72, which is perfectly matched to the shape and tilt angle of the wedge block 79. The inclined surface of the wedge block 79 is closely fitted with the inclined surface of the groove 710. The end of the wedge block 79 away from the sliding rod 77 is set with an arc transition structure to reduce frictional resistance during relative sliding. A spring 78 is sleeved on the outer side of the sliding rod 77. One end of the spring 78 abuts against the inner wall of the fixing plate 75, and the other end abuts against the end face of the wedge block 79. The spring 78 is always in a pre-compressed state to provide continuous clamping force for the wedge block 79.

[0021] The inclined surface of the inclined block 79 is adapted to fit the inclined surface of the inclined groove 710, and the end of the inclined block 79 away from the slide rod 77 is set as an arc transition structure.

[0022] A rubber folding tube 76 is fitted on the outside of the spring 78. One end of the rubber folding tube 76 is fixedly connected to the end face of the collar 74, and the other end is fixedly connected to the end face of the straight plate 73. The rubber folding tube 76 has a retractable corrugated structure, and the telescopic column 72 passes through the inside of the rubber folding tube 76. An annular collar 74 is movably fitted on the outer side of the telescopic column 72. The top of the collar 74 slides against the bottom of the wing plate 71. An annular groove adapted to the inner side of the collar 74 is provided on the outer wall of the telescopic column 72 to ensure that the collar 74 can only slide along the axial direction of the telescopic column 72. A rubber folding tube 76 is fitted on the outer side of the spring 78. The rubber folding tube 76 has a retractable corrugated structure. One end of it is fixedly connected to the lower end face of the collar 74 by adhesive bonding, and the other end is fixedly connected to the upper end face of the straight plate 73 by adhesive bonding. The telescopic column 72 passes through the interior of the rubber folding tube 76. The rubber folding tube 76 can deform synchronously with the telescopic column 72, and at the same time plays the role of dust prevention and auxiliary vibration buffering.

[0023] A collar 74 is fitted on the outer side of the telescopic column 72, and a second spring 713 connected to the collar 74 is fitted on the outer side of the telescopic column 72. The top end of the second spring 713 is located at the bottom of the wing plate 71. Example 2: Please refer to Figure 1-5 The present invention provides a technical solution: the automatic calibration mechanism 8 includes a pressure detection cylinder 81 disposed on the mounting plate 6, an air cylinder 83 disposed on the inner side of the mounting plate 6, a connecting pipe 82 disposed between the air cylinder 83 and the pressure detection cylinder 81, a pressure chamber 84 disposed inside the pressure detection cylinder 81, a partition 85 disposed inside the pressure chamber 84, and a connecting cavity 86 disposed on the side of the partition 85 away from the connecting pipe 82.

[0024] A piston disc 89 is movably disposed inside the air pressure chamber 84. A push rod 812 that penetrates the partition 85 is disposed at the bottom end of the piston disc 89. A splined shaft 810 that penetrates the air cylinder 83 is disposed at the bottom end of the push rod 812. The outer side of the splined shaft 810 is movably disposed inside the air cylinder 83. An air cylinder 83 is fixedly installed on the inner side of the mounting plate 6 by a bracket 2. The air cylinder 83 and the air pressure detection cylinder 81 are coaxially arranged and connected by a sealing connecting pipe 82. The connecting pipe 82 is a high-pressure hose to ensure the air pressure transmission is sealed. An air pressure chamber 84 is opened axially inside the air pressure detection cylinder 81. A partition 85 is provided in the air pressure chamber 84 with a sealing sliding fit. The partition 85 divides the air pressure chamber 84 into two independent chambers, upper and lower. The side of the partition 85 away from the connecting pipe 82 is set as the connecting chamber 86, which is connected to the outside.

[0025] The bottom end of the spline shaft 810 is provided with a contact ball 88, the top end of the retaining plate 5 is provided with a mounting base 87, the top end of the mounting base 87 is provided with an arc-shaped groove 811, and the outer side of the contact ball 88 is movably disposed on the inner side of the arc-shaped groove 811. A push rod 812 is integrally formed at the bottom center of the piston disc 89. The push rod 812 penetrates vertically downward through the partition 85 and extends into the connecting cavity 86. The push rod 812 and the partition 85 are slidably sealed by a sealing sleeve. The bottom end of the push rod 812 is connected to a spline shaft 810 by a spline. The spline shaft 810 penetrates vertically downward through the bottom end of the air cylinder 83, and the spline shaft 810 and the inner wall of the air cylinder 83 are splined to ensure that the spline shaft 810 can only move along the axial direction of the air cylinder 83 and cannot rotate relative to it. The bottom end of the spline shaft 810 is movably connected to a contact ball 88 through a ball-and-socket structure. The top center of the snap-fit ​​plate 5 is fixed with a mounting base 87 by bolts. The top of the mounting base 87 has an arc-shaped groove 811 that is adapted to the contact ball 88. The outer side of the contact ball 88 rolls and fits against the inner wall of the arc-shaped groove 811, and the contact ball 88 is concentrically set with the emission axis of the water-guided laser device 4.

[0026] The automatic calibration mechanism 8 is integrated with physical sensors such as pressure sensors and displacement sensors. Combined with air pressure detection and contact ball 88 positioning, it can capture the coaxiality deviation data generated during processing and assembly in real time and accurately. The deviation compensation is completed through the synergistic action of air pressure chamber 84, push rod 812 and spline shaft 810, and the tilt problem of water jet emission axis is accurately corrected. The cooperation of the telescopic column 72, the inclined block 79 and the spring 78 can evenly fit the end face of the object. The rubber folding tube 76 can buffer the recoil force of the high-pressure water jet and the processing vibration. At the same time, the mechanism has built-in force sensors, vibration sensors and other physical sensors, which can monitor the stress state and vibration amplitude of the connection parts in real time, and promptly report potential micro-angular displacement and stress deformation risks, further avoiding the accumulation of deviations. During assembly, first align the snap-fit ​​plate 5 with the mounting plate 6, so that the screw 711 at the bottom of the telescopic column 72 passes through the through hole on the straight plate 73, and tighten the nut 712. Through the abutment action of the nut 712 and the straight plate 73, the snap-fit ​​plate 5 and the mounting plate 6 are initially fixed. During this process, the spring 78 is in a pre-compressed state, and its elastic force pushes the inclined block 79 to slide along the sliding cavity, so that the inclined surface of the inclined block 79 fits tightly with the inclined groove 710 on the telescopic column 72. The radial clamping force generated by the inclined surface fit is used to further strengthen the connection between the telescopic column 72 and the wing plate 71.

[0027] When the device is working, the high-pressure water jet generated by the water-guided laser device 4 will bring recoil force, and vibration will also be generated during the processing. At this time, the rubber folding tube 76 can absorb some vibration energy through the expansion and contraction deformation of its own corrugated structure, playing a preliminary buffering role. At the same time, the vibration will cause the telescopic column 72 to have a slight displacement tendency. The inclined block 79 and the inclined groove 710 slide relative to each other, pushing the slide rod 77 to compress or stretch the spring 78. The elastic deformation of the spring 78 can further absorb vibration energy, offset the slight displacement tendency, avoid stress deformation and slight angular displacement at the connection part, and ensure the initial attitude stability of the emission axis of the water-guided laser device 4. When a coaxiality deviation occurs during processing and assembly, causing the emission axis of the water-guided laser device 4 to tilt, the clamping plate 5 will shift synchronously with the water-guided laser device 4, thereby causing the mounting base 87 and the arc-shaped groove 811 to shift. Since the contact ball 88 rolls and fits against the arc-shaped groove 811, and the contact ball 88 is fixedly connected to the spline shaft 810, the displacement of the arc-shaped groove 811 will push the contact ball 88 to move in the tilting direction, thereby causing the spline shaft 810, push rod 812 and piston disc 89 to slide axially along the air pressure chamber 84.

[0028] The sliding of piston disc 89 changes the volume of the upper chamber in the air pressure chamber 84, causing a change in air pressure within the chamber. This change in air pressure is transmitted to the air cylinder 83 through the connecting pipe 82, keeping the air pressure in the air cylinder 83 in dynamic balance with the air pressure detection cylinder 81. The change in air pressure in the air cylinder 83 generates a reverse thrust, pushing the spline shaft 810 to move in the opposite direction. This, in turn, applies a corrective force to the mounting base 87 through the contact ball 88, causing the mounting base 87 to gradually reset the retaining plate 5 and the water-guided laser device 4 until the contact ball 88 returns to the center position of the arc-shaped groove 811. At this point, the emission axis of the water-guided laser device 4 returns to a vertical state, achieving automatic compensation for coaxiality deviation.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A device for measuring the verticality of a water-guided laser water jet, characterized in that: The device includes a workbench (1), a bracket (2) fixedly installed on the top of the workbench (1), an adjustment device (3) set on the bracket (2), and a water-guided laser device (4) connected to the adjustment device (3). The emitting end of the water-guided laser device (4) is provided with a snap-fit ​​plate (5). The adjustment device (3) is provided with a mounting plate (6) corresponding to the snap-fit ​​plate (5). A vibration damping snap-fit ​​mechanism (7) is provided between the snap-fit ​​plate (5) and the mounting plate (6). An automatic calibration mechanism (8) is provided on the side of the mounting plate (6) away from the snap-fit ​​plate (5).

2. The water-guided laser water jet verticality measuring device according to claim 1, characterized in that: The vibration damping snap-fit ​​mechanism (7) includes a wing plate (71) disposed on the outside of the mounting plate (6). A telescopic column (72) is movably disposed on the inner side of the wing plate (71). A screw (711) is disposed at the bottom end of the telescopic column (72). A straight plate (73) installed on the outside of the snap-fit ​​plate (5) is movably sleeved on the outer side of the screw (711). A nut (712) is threaded on the outer side of the screw (711). The top end of the nut (712) is tightly fitted to the bottom of the straight plate (73).

3. The water-guided laser water jet verticality measuring device according to claim 2, characterized in that: A fixed plate (75) is provided on the top of the wing plate (71). A slide rod (77) is movably provided inside the fixed plate (75). An inclined block (79) is provided at the end of the slide rod (77). An inclined groove (710) corresponding to the inclined block (79) is opened on the inner side of the telescopic column (72). A spring (78) connected to the fixed plate (75) and the inclined block (79) is sleeved on the outer side of the slide rod (77).

4. The water-guided laser water jet verticality measuring device according to claim 3, characterized in that: The inclined surface of the inclined block (79) is adapted to fit the inclined surface of the inclined groove (710), and the end of the inclined block (79) away from the slide rod (77) is provided with a rounded transition structure.

5. The water-guided laser water jet verticality measuring device according to claim 4, characterized in that: A rubber folding tube (76) is sleeved on the outside of the spring (78). One end of the rubber folding tube (76) is fixedly connected to the end face of the collar (74), and the other end is fixedly connected to the end face of the straight plate (73). The rubber folding tube (76) has a retractable corrugated structure, and the telescopic column (72) penetrates the interior of the rubber folding tube (76).

6. The water-guided laser water jet verticality measuring device according to claim 5, characterized in that: The telescopic column (72) is fitted with a collar (74) on its outer side, and a second spring (713) connected to the collar (74) is fitted on the outer side of the telescopic column (72). The top of the second spring (713) is located at the bottom of the wing plate (71).

7. The water-guided laser water jet verticality measuring device according to claim 1, characterized in that: The automatic calibration mechanism (8) includes a pressure detection cylinder (81) disposed on the mounting plate (6). An air cylinder (83) is disposed on the inner side of the mounting plate (6). A connecting pipe (82) is disposed between the air cylinder (83) and the pressure detection cylinder (81). A pressure chamber (84) is disposed inside the pressure detection cylinder (81). A partition (85) is disposed inside the pressure chamber (84). A connecting cavity (86) is disposed on the side of the partition (85) away from the connecting pipe (82).

8. The water-guided laser water jet verticality measuring device according to claim 7, characterized in that: A piston disc (89) is movably disposed on the inner side of the air pressure chamber (84). A push rod (812) penetrating the partition plate (85) is disposed at the bottom end of the piston disc (89). A splined shaft (810) penetrating the air cylinder (83) is disposed at the bottom end of the push rod (812), and the outer side of the splined shaft (810) is movably disposed on the inner side of the air cylinder (83).

9. The water-guided laser water jet verticality measuring device according to claim 8, characterized in that: The bottom end of the spline shaft (810) is provided with a contact ball (88), the top end of the snap-fit ​​plate (5) is provided with a mounting base (87), the top end of the mounting base (87) is provided with an arc-shaped groove (811), and the outer side of the contact ball (88) is movably disposed on the inner side of the arc-shaped groove (811).

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