Laser interferometer with auxiliary positioning structure

Abstract

The utility model relates to the technical field of precision detection, and discloses a laser interferometer with an auxiliary positioning structure, which comprises an expansion piece, a fixing button is movably mounted on the surface of the expansion piece, a support plate is fixedly mounted on the upper surface of the expansion piece, and an auxiliary positioning structure is arranged on the support plate. And an adjusting rod is movably installed on the inner wall of the supporting plate, the surface of the adjusting rod is in threaded connection with a laser head, and a fixing frame is fixedly installed on the surface of the expansion piece. According to the laser interferometer with the auxiliary positioning structure, the fixing frame is fixed on the ground, the height of the threaded rod is adjusted by adjusting the rotary knob, then the fixing plate is adjusted according to the ground with different heights, then the positioning cone is taken out from the storage device and statically hung, the external influence is reduced through the glass cover, and the positioning accuracy is improved. Meanwhile, whether the tail end of the positioning cone and the positioning rod are in a horizontal state or not is observed, so that whether the device is in a horizontal state or not is judged, and the accuracy of positioning the laser interferometer is better assisted to be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of precision detection, in particular to a laser interferometer with an auxiliary positioning structure. Background Technique

[0002] Lasers have the advantages of high intensity, high directivity, spatial coherence, narrow bandwidth, and high monochromaticity. Currently, the interferometers commonly used to measure length mainly use the Michelson interferometer, with a frequency-stabilized helium-neon laser as the light source, forming a measurement system with an interference effect. Laser interferometers can cooperate with various refractive mirrors and reflecting mirrors to perform measurements such as linear position, speed, angle, true flatness, straightness, parallelism, and perpendicularity, and can also be used for the calibration of precision machine tools or measuring instruments.

[0003] According to a disclosed laser interferometer with an auxiliary light-fixing structure (publication number: CN215725692U), when using the above application, the laser head is horizontally moved. The position of the central slide bar can be adjusted during use through the provided mounting sleeve and fixing knob, thereby realizing the adjustment of the height of the laser head, so that the instrument does not need to be moved as a whole during use, only local movement can be performed through corresponding components, and when moving horizontally, it is driven by a lead screw, which can make the movement of the laser head more stable.

[0004] However, during the actual use of the above equipment, when the laser instrument is fixed to the ground, due to the different degrees of potholes on the ground in different environments, the ordinary fixing frame cannot ensure stable fixation on the ground, affecting the accuracy and stability of laser positioning; in view of this, we have proposed a laser interferometer with an auxiliary positioning structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide a laser interferometer with an auxiliary positioning structure to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A laser interferometer with an auxiliary positioning structure, including a telescopic device, a fixing knob is movably installed on the surface of the telescopic device, a support plate is fixedly installed on the upper surface of the telescopic device, an adjusting rod is movably installed inside the support plate, a laser head is threadedly connected to the surface of the adjusting rod, a fixing frame is fixedly installed on the surface of the telescopic device, an auxiliary mechanism is arranged on the surface of the fixing frame, and a stabilizing mechanism is arranged below the fixing frame. The auxiliary mechanism includes:

[0007] A rotary knob, the rotary knob is movably installed on the upper surface of the fixed frame, the inner wall of the rotary knob is threadedly connected to a threaded rod, the bottom end of the threaded rod is fixedly installed with a fixing plate, the inner wall of the fixing plate is movably installed with a fixing nail, a moving groove is opened on the outer side of the fixed frame, and a straight rod is fixedly installed on the inner wall of the moving groove;

[0008] A rotator, the rotator is movably installed on the arc surface of the straight rod, a thin string is fixedly installed at the lower end of the rotator, a positioning cone is fixedly installed at one end of the thin string away from the rotator, a glass cover is fixedly installed on the surface of the fixed frame, a positioning rod is fixedly installed at the lower end of the glass cover, and a storage device is fixedly installed on the inner wall of the moving groove.

[0009] Preferably, the stabilizing mechanism includes a circular groove, the circular groove is opened on the fixing plate, an activity groove is opened on the inner wall of the circular groove, a return spring is fixedly connected to the inner wall of the activity groove, one end of the return spring away from the activity groove is fixedly connected to an activity hole, the activity hole is opened on the activity block, and a friction pad is fixedly connected to the surface of the activity block.

[0010] Preferably, the number of the activity grooves is set to be several, and several of the activity grooves are arranged in a circumferential array on the inner wall of the circular groove to slow down the offset caused by the impact on the instrument from multiple angles.

[0011] Preferably, a circular hole is opened on the surface of the fixing plate, and the diameter of the circular hole is adapted to the diameter of the fixing nail, so that the fixing nail can be inserted into the circular hole, and then the fixed frame can be fixed.

[0012] Preferably, a storage opening is opened on the surface of the storage device, and the shape of the storage opening is adapted to the shape of the positioning cone, so that the positioning cone can be stored when not in use.

[0013] Preferably, when the positioning cone and the thin string are statically suspended, the tip of the positioning cone is in a horizontal state with the positioning rod, and the positioning rod is vertically installed on the lower surface of the glass cover.

[0014] Compared with the prior art, the utility model provides a laser interferometer with an auxiliary positioning structure, which has the following beneficial effects:

[0015] 1. For the laser interferometer with the auxiliary positioning structure, by setting an auxiliary mechanism, the fixed frame is fixed on the ground. By adjusting the rotary knob, the height of the threaded rod is adjusted, so that the fixing plate can be adjusted to cope with different heights of the ground. Secondly, take out the positioning cone from the storage device, statically suspend the positioning cone, reduce the external influence through the glass cover, and at the same time observe whether the tail end of the positioning cone and the positioning rod are in a horizontal state, so as to judge whether the device is in a horizontal state, which is convenient for better assisting in adjusting the accuracy of the positioning of the laser interferometer.

[0016] 2. The laser interferometer with an auxiliary positioning structure is provided with a stabilizing mechanism. When the instrument is placed on a smooth ground, the friction pads can better store and stabilize the instrument. At the same time, in the face of some accidental collisions during positioning, the friction pads can drive the movable block to buffer the collision of the instrument through the deformation of the return spring, reducing the sliding of the instrument and facilitating better positioning of the instrument's position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the main body of the instrument of the present utility model;

[0018] Figure 2 is a schematic sectional structure diagram of a partial fixing bracket of the present utility model;

[0019] Figure 3 is a schematic exploded structure diagram of a partial fixing plate of the present utility model;

[0020] Figure 4 is a schematic sectional structure diagram of a partial fixing plate of the present utility model.

[0021] In the figure: 1. Extender; 2. Fixing button; 3. Auxiliary mechanism; 301. Rotating button; 302. Threaded rod; 303. Fixing plate; 304. Fixing nail; 305. Moving groove; 306. Straight rod; 307. Rotator; 308. Thin string; 309. Positioning cone; 310. Glass cover; 311. Positioning rod; 312. Storage device; 4. Stabilizing mechanism; 401. Friction pad; 402. Movable block; 403. Movable groove; 404. Return spring; 405. Round groove; 406. Movable hole; 5. Support plate; 6. Adjusting rod; 7. Laser head; 8. Fixing bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] As Figures 1 - 4 shown, the present utility model provides a technical solution: a laser interferometer with an auxiliary positioning structure, including an extender 1, a fixing button 2 is movably installed on the surface of the extender 1, a support plate 5 is fixedly installed on the upper surface of the extender 1, an adjusting rod 6 is movably installed inside the support plate 5, the surface of the adjusting rod 6 is threadedly connected to a laser head 7, a fixing bracket 8 is fixedly installed on the surface of the extender 1, an auxiliary mechanism 3 is arranged on the surface of the fixing bracket 8, a stabilizing mechanism 4 is arranged below the fixing bracket 8, and the auxiliary mechanism 3 includes a rotating button 301, a threaded rod 302, a fixing plate 303, a fixing nail 304, a moving groove 305, a straight rod 306, a rotator 307, a thin string 308, a positioning cone 309, a glass cover 310, a positioning rod 311, and a storage device 312.

[0023] In an embodiment of the present utility model, the rotary knob 301 is movably installed on the upper surface of the fixing frame 8. The inner wall of the rotary knob 301 is threadedly connected to the threaded rod 302. The bottom end of the threaded rod 302 is fixedly installed with a fixing plate 303. The inner wall of the fixing plate 303 is movably installed with a fixing nail 304. A moving groove 305 is formed on the outer side of the fixing frame 8. A straight rod 306 is fixedly installed on the inner wall of the moving groove 305. A rotator 307 is movably installed on the arc surface of the straight rod 306. A thin string 308 is fixedly installed at the lower end of the rotator 307. One end of the thin string 308 away from the rotator 307 is fixedly installed with a positioning cone 309. A glass cover 310 is fixedly installed on the surface of the fixing frame 8. A positioning rod 311 is fixedly installed at the lower end of the glass cover 310. A storage device 312 is fixedly installed on the inner wall of the moving groove 305.

[0024] In addition, the stabilizing mechanism 4 includes a circular groove 405 which is formed on the fixing plate 303. An activity groove 403 is formed on the inner wall of the circular groove 405. A return spring 404 is fixedly connected to the inner wall of the activity groove 403. One end of the return spring 404 away from the activity groove 403 is fixedly connected to an activity hole 406 which is formed on the activity block 402. A friction pad 401 is fixedly connected to the surface of the activity block 402. The number of the activity grooves 403 is set to be several. The several activity grooves 403 are arranged in a circumferential array on the inner wall of the circular groove 405 to buffer the collision positions of the instrument at multiple angles and reduce the sliding positions of the instrument.

[0025] In an embodiment of the present utility model, a circular hole is formed on the surface of the fixing plate 303. The diameter of the circular hole is adapted to the diameter of the fixing nail 304. The number of the circular holes is set to be three, which is convenient for fixedly installing the fixing nail 304 and further ensuring the stability of the fixing frame 8. A storage opening is formed on the surface of the storage device 312. The shape of the storage opening is adapted to the shape of the positioning cone 309 for storing the positioning cone 309 when it is not in use. When the positioning cone 309 and the thin string 308 are statically suspended, the tip of the positioning cone 309 is in a horizontal state with the positioning rod 311. The positioning rod 311 is vertically installed on the lower surface of the glass cover 310 to better position whether the instrument is horizontally placed by judging the position of the static positioning cone 309.

[0026] In the present utility model, during use, the fixing frame 8 is fixed on the ground. The height of the threaded rod 302 is adjusted by adjusting the rotary knob 301 so that the fixing plate 303 can be adjusted to cope with different heights of the ground. Secondly, the positioning cone 309 is taken out from the storage device 312 and statically suspended. The external influence is reduced through the glass cover 310. At the same time, it is observed whether the tail end of the positioning cone 309 and the positioning rod 311 are in a horizontal state, so as to judge whether the device is in a horizontal state, which is convenient for better assisting in adjusting the accuracy of the positioning laser interferometer.

[0027] Further, when the instrument is placed on a smooth ground, the friction pad 401 can better store the stable instrument. At the same time, in the face of some misaligned collisions during positioning, the friction pad 401 can drive the movable block 402 to buffer the collision of the instrument through the deformation of the return spring 404, reduce the sliding of the instrument, and facilitate better positioning of the instrument. Move the telescopic device 1 to adjust the position of the support plate 5 and rotate the fixing knob 2 to fix it. Further rotate the adjusting rod 6 to move the base on the laser head 7. The laser head 7 is rotatably connected to the upper surface of the base and the angle can be adjusted, which is convenient for better positioning of the laser head 7.

[0028] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A laser interferometer with an auxiliary positioning structure, comprising a telescope (1), a fixing button (2) movably mounted on the surface of the telescope (1), a support plate (5) fixedly mounted on the upper surface of the telescope (1), an adjusting rod (6) movably mounted on the inner wall of the support plate (5), a laser head (7) being threadedly connected to the surface of the adjusting rod (6), and a fixing frame (8) fixedly mounted on the surface of the telescope (1), characterized in that: An auxiliary mechanism (3) is arranged on the surface of the fixing frame (8), and a stabilizing mechanism (4) is arranged below the fixing frame (8). The auxiliary mechanism (3) comprises: A rotating knob (301), the rotating knob (301) being movably mounted on the upper surface of a fixing frame (8), the inner wall of the rotating knob (301) being threadedly connected to a threaded rod (302), the bottom end of the threaded rod (302) being fixedly mounted with a fixing plate (303), the inner wall of the fixing plate (303) being movably mounted with a fixing nail (304), the outer side of the fixing frame (8) being provided with a movable groove (305), the inner wall of the movable groove (305) being fixedly mounted with a straight rod (306); A rotator (307) is movably mounted on the arc surface of the straight rod (306); a thin rope (308) is fixedly mounted on the lower end of the rotator (307); a positioning cone (309) is fixedly mounted on one end of the thin rope (308) away from the rotator (307); a glass cover (310) is fixedly mounted on the surface of the fixed frame (8); a positioning rod (311) is fixedly mounted on the lower end of the glass cover (310); and a storage container (312) is fixedly mounted on the inner wall of the movable groove (305).

2. The laser interferometer with an auxiliary positioning structure according to claim 1, characterized in that: The stabilizing mechanism (4) comprises a circular groove (405), wherein the circular groove (405) is provided on the fixed plate (303), wherein the inner wall of the circular groove (405) is provided with a movable groove (403), wherein the inner wall of the movable groove (403) is fixedly connected to a reset spring (404), wherein one end of the reset spring (404) away from the movable groove (403) is fixedly connected to a movable hole (406), wherein the movable hole (406) is provided on the movable block (402), and the surface of the movable block (402) is fixedly connected to a friction pad (401).

3. The laser interferometer with auxiliary positioning structure according to claim 2, characterized in that: The movable grooves (403) are provided in a plurality, and the plurality of movable grooves (403) are arranged in a circular array on the inner wall of the circular groove (405).

4. The laser interferometer with an auxiliary positioning structure according to claim 1, characterized in that: A circular hole is provided on the surface of the fixing plate (303), and the diameter of the circular hole matches the diameter of the fixing nail (304).

5. The laser interferometer with auxiliary positioning structure according to claim 1, characterized in that: A storage opening is provided on the surface of the storage container (312), and the shape of the storage opening is adapted to the shape of the positioning cone (309).

6. The laser interferometer with an auxiliary positioning structure according to claim 1, characterized in that: The positioning cone (309) and the thin rope (308) are suspended statically so that the tip of the positioning cone (309) and the positioning rod (311) are in a horizontal state, and the positioning rod (311) is vertically installed on the lower surface of the glass cover (310).

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