A dolly zoom lens for visual monitoring of a machine tool

Abstract

The present application relates to the technical field of zoom lens, in particular to a kind of anti-shake zoom lens for machine tool vision monitoring, including pedestal, shell, protective lens, air pump, air cavity, damping component, positive pressure component and adjusting assembly, the damping component is installed on the upper end of pedestal, the shell is installed on the upper end of damping component, the air cavity is connected in the inner side of shell, the air pump is installed in the rear side of air cavity, the positive pressure component is installed in the inner side of air cavity, there is filter screen in the air cavity, the air pump is filled into filter gas in the air cavity, gas enters damping component via air cavity to form gas film in damping component for damping, while making positive pressure component form high pressure in lens to prevent foreign matter from outside entering, the adjusting assembly is used for internal adjustment lens angle, solve the metal debris splashing scratch lens during machine tool working process, and oil dirt, dust in air entering lens interior can cause damage to lens and other problems.

Description

Technical Field

[0001] The present invention relates to the technical field of zoom lenses, and in particular to an anti-shake zoom lens for machine tool visual monitoring. Background Art

[0002] Industrial visual inspection utilizes machine vision technology to automatically inspect, measure, identify, and guide products during the manufacturing process. To ensure high precision and efficiency during machine tool manufacturing, existing technologies utilize machine tool visual monitoring systems to monitor and control the production process. However, machine tools are prone to strong vibrations during operation, which can cause image blur, recognition failures, and focusing difficulties when the camera monitors the machine tool's working area.

[0003] In the existing technology, a shock-absorbing system such as an elastic damper is installed on the outside of the lens to absorb most of the vibration. A gyroscope is then set inside the lens to monitor the tiny angular velocity jitter of the lens in real time. The angle of the internal lens is then fine-tuned accordingly through precision instruments such as a voice coil motor to offset the jitter and keep the optical path stable on the imaging surface.

[0004] However, in actual situations, the operation of metal processing machine tools will not only generate strong high-frequency vibrations, but also be accompanied by the splashing of metal debris and the continuous vaporization of cooling oil in the processing area, which will cause the air to be filled with oil, metal dust, etc. The high-speed splashing metal debris generated during the processing process can easily scratch or even wear the outermost optical lens surface of the lens, causing permanent optical damage to the lens. At the same time, the oil in the air can easily adhere to and condense on the outer surface of the lens to form an oil film. The oil film will significantly reduce the transmittance of the lens and cause obstruction of the light path, which will affect the monitoring accuracy of the zoom lens for the working area of ​​the machine tool. Moreover, since gaps are usually generated at the packaging when the lens is packaged, oil and metal dust can easily enter the inside of the lens, affecting the light path transmission inside the lens, thereby affecting its monitoring accuracy.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs an anti-shake zoom lens for machine tool visual monitoring, which solves the above technical problems. Summary of the Invention

[0006] The present invention provides an anti-shake zoom lens for visual monitoring of machine tools. The present invention provides an air cavity and a filter in the air cavity so that clean air enters the lens, forming a positive pressure inside the lens to prevent oil and dust from entering the lens and damaging internal instruments. At the same time, an air jet hole is provided at the lens to form an air curtain to protect the lens from damage. At the same time, a shock-absorbing component is provided to shock-absorbing and buffer the violent vibration of the machine tool, thereby solving the problems of metal debris splashing and scratching the lens during the operation of the machine tool in actual situations, and oil and dust floating in the air easily entering the lens and damaging internal components.

[0007] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0008] A shake-resistant zoom lens for machine tool visual monitoring comprises a base, a shell, a protective lens, an air pump, an air cavity, a shock-absorbing component, a positive pressure component and an adjustment component, wherein the shock-absorbing component is mounted on the upper end of the base, the shell is mounted on the upper end of the shock-absorbing component, the protective lens is mounted on the front side of the shell, the air cavity is connected to the inner side of the shell, the air pump is mounted on the rear side of the air cavity, the positive pressure component is mounted on the inner side of the air cavity, a filter is provided in the air cavity, the air pump fills the air cavity with filtered gas, the gas enters the shock-absorbing component through the air cavity, forms a gas film in the shock-absorbing component for shock absorption, and simultaneously causes the positive pressure component to form a high pressure inside the lens to prevent external impurities from entering, and the adjustment component is used to internally adjust the lens angle.

[0009] Preferably, the air cavity is connected to the periphery of the protective lens, and a plurality of air jet holes are opened on the periphery of the protective lens, and the air jet holes are conical.

[0010] Preferably, the shock-absorbing assembly includes an air column, a support column and a flexible connecting piece. The upper end of the air column is connected to the lower end of the air cavity. A solenoid valve is installed at the connection point. The lower end of the solenoid valve is connected to a pressure sensor. A plurality of air pressure holes are opened on the periphery of the air column. The diameter of the air pressure holes gradually decreases from the inside to the outside. The support column is installed at the upper end of the base, the air column is installed on the inner side of the support column, and the flexible connecting piece is connected between the upper end of the support column and the upper end of the air column.

[0011] Preferably, the positive pressure component includes a positive pressure chamber and a support rod. The positive pressure chamber is fixedly installed inside the shell. The support rod is connected between the positive pressure chamber and the shell. A plurality of air inlet holes are evenly opened on the side wall of the positive pressure chamber, and the diameter of the air inlet holes gradually decreases from the inside to the outside.

[0012] Preferably, the support rods are evenly distributed outside the positive pressure chamber, the cross-section of the support rods is streamlined, and the support rods are made of elastic metal.

[0013] Preferably, a secondary cavity is installed on the outer side of the support column, and a connecting pipe is provided between the support column and the secondary cavity.

[0014] Preferably, the cross-sectional diameter of the parts where both ends of the communicating tube are connected to the supporting column and the auxiliary cavity is larger, and the cross-sectional diameter of the middle part is smaller.

[0015] Preferably, the adjustment component includes a gyroscope, a controller, a voice coil motor and an adjustment lens. The gyroscope is installed inside the positive pressure chamber, and the controller and the voice coil motor are installed at the front end of the gyroscope in sequence from back to front. The adjustment lens is installed at the front end of the voice coil motor. A windshield is installed in the positive pressure chamber, and the windshield is installed on the outside of the gyroscope and the adjustment lens. The cross-section of the windshield is curved.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention provides an air cavity and a filter in the air cavity so that air enters the lens after being filtered, forming a positive pressure inside the lens to prevent oil and dust from entering the lens and damaging the instrument. At the same time, an air jet hole is provided at the lens. After the air is discharged through the air jet hole, an air curtain is formed to protect the lens from damage. The gas enters the shock-absorbing component to form a gas film to dampen the severe vibration of the machine tool. This solves the problems in actual situations where metal debris splashes and scratches the lens during the operation of the machine tool, and air filled with oil and dust enters the lens and causes damage to the lens.

[0018] 2. The present invention sets an air pump, an air cavity and a shock-absorbing component, and uses the air pump and the air cavity to form a positive pressure inside the lens. Since there is usually a certain gap when the lens is packaged, the gas is continuously released outward through the internal positive pressure to prevent external oil and dust from entering the interior of the lens and causing damage to the lens. At the same time, the air pump and the air cavity are used to continuously fill the interior of the shock-absorbing component with gas to form a high-pressure air film, which avoids direct contact between the entire lens and the base, so that the vibration of the machine tool cannot be directly transmitted to the lens, thereby greatly improving the shock-absorbing ability of the lens.

[0019] 3. The present invention provides an air jet hole at the lens. When the air pump delivers gas to the inside of the lens, most of the gas will be ejected through the air jet hole, forming an air curtain on the outside of the lens, preventing metal debris from splashing onto the lens and scratching the lens surface, thereby protecting the lens. At the same time, a small amount of gas enters the positive pressure chamber through the air inlet hole, isolating the adjustment component from the housing through the positive pressure chamber, preventing the airflow formed by the air pump from directly disturbing the adjustment component. At the same time, a positive pressure area is formed inside the lens, preventing external oil from entering the lens through gaps during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a front view of the present invention;

[0024] Figure 3 This invention Figure 2 Sectional view along line AA;

[0025] Figure 4 This invention Figure 3 A partial enlarged view of part A;

[0026] Figure 5 is a cross-sectional view of the positive pressure assembly of the present invention;

[0027] Figure 6 It is a cross-sectional view of some parts of the shock absorbing assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the gas column structure of the present invention.

[0029] In the picture:

[0030] 1. Base;

[0031] 2. Shell;

[0032] 3. Protective lens; 4. Air pump;

[0033] 5. Air cavity; 51. Filter; 52. Jet hole;

[0034] 6. Shock absorber assembly; 61. Air column; 611. Solenoid valve; 612. Pressure sensor; 613. Air pressure hole; 614. Round table; 62. Support column; 63. Flexible connecting piece; 64. Sub-cavity; 65. Connecting pipe;

[0035] 7. Positive pressure assembly; 71. Positive pressure chamber; 711. Air inlet; 712. Wind deflector; 72. Support rod;

[0036] 8. Adjustment component; 81. Gyroscope; 82. Controller; 83. Voice coil motor; 84. Adjustment lens. DETAILED DESCRIPTION

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] The invention relates to an anti-shake zoom lens for machine tool visual monitoring, comprising a base 1, a shell 2, a protective lens 3, an air pump 4, an air cavity 5, a shock absorbing component 6, a positive pressure component 7 and an adjustment component 8. The base 1 is fixedly mounted on the machine tool by bolts to facilitate observation of the machine tool operation position. The shock absorbing component 6 is mounted on the upper end of the base 1, and the shell 2 is mounted on the upper end of the shock absorbing component 6. The connection part between the shell 2 and the shock absorbing component 6 can rotate freely, which is convenient for adjusting the alignment position of the lens. The protective lens 3 is fixedly mounted on the front side of the shell 2, and the protective lens 3 faces the machine tool operation position and is used to protect the internal components of the lens. The air cavity 5 is opened on the inner side of the shell 2, and the air pump 4 is mounted behind the air cavity 5. A filter cavity is opened at the rear end of the air cavity 5, and the air pump 4 is connected to the filter cavity through a rubber hose. The filter cavity is communicated with the air cavity 5, so as to reduce the disturbance caused by the airflow and prevent the vibration caused by the air pump 4 when working from affecting the lens. A control valve is installed at the connection between the filter cavity and the air cavity 5, and a A flow meter can detect the gas flow rate in the air cavity 5. A controller is installed in the control valve. The flow meter controls the opening and closing of the control valve through the controller, thereby ensuring the stability of the gas flow in the air cavity 5. The positive pressure component 7 is installed on the inner side of the air cavity 5. A filter 51 is provided in the air cavity 5. The filter 51 is filled with an air purifier and an additional dehumidifier is filled inside to prevent moisture from entering the lens and causing condensation. The air pump 4 inflates the air into the air cavity 5. After the gas is filtered by the filter 51, the gas enters the shock-absorbing component 6 through the air cavity 5 so that there is sufficient air pressure in the shock-absorbing component 6 to form a gas film, thereby avoiding direct solid connection between the lens and the base 1, so that the high-frequency vibration of the machine tool cannot be transmitted to the lens. At the same time, the positive pressure component 7 forms a high-pressure environment inside the lens to prevent external impurities from entering through the gap in the lens, thereby protecting the internal environment of the lens. At the same time, the adjustment component 8 is used to adjust the lens angle internally to further prevent the accuracy of lens monitoring from being affected by machine tool vibration.

[0039] The air cavity 5 is connected to the periphery of the protective lens 3, and a plurality of jet holes 52 are opened on the periphery of the protective lens 3. The outlets of the jet holes 52 are slightly toward the axial position of the protective lens 3, and the aperture of the jet holes 52 gradually decreases from the inside to the outside. When the air pump 4 ventilates the air cavity 5, the aperture of the jet holes 52 gradually decreases from the inside to the outside, and the flow rate of the gas gradually accelerates. Under the action of the plurality of jet holes 52, an air curtain will be formed on the outside of the protective lens 3 to prevent metal debris from flying during the operation of the machine tool, so as to avoid it from scratching the protective lens 3 and affecting the monitoring accuracy of the lens.

[0040] The shock absorbing assembly 6 includes an air column 61, a support column 62 and a flexible connecting piece 63. The upper end of the air column 61 is connected to the lower end of the air cavity 5. The connecting part between the upper end of the air column 61 and the lower end of the air cavity 5 can rotate freely, which is convenient for adjusting the lens position. A solenoid valve 611 is installed at the connecting part. The lower end of the solenoid valve 611 is connected to a pressure sensor 612. A control element is installed on the solenoid valve 611. The pressure sensor 612 is electrically connected to the control element on the solenoid valve 611. The pressure sensor 612 is used to monitor the gas pressure in the air column 61. Since it is difficult to achieve complete sealing at the sealing part connecting the air column 61 and the support column 62, in order to ensure that there is sufficient air pressure in the air column 61 to form a gas film, when the pressure sensor 612 detects that the gas pressure in the air column 61 is low, it will transmit a corresponding signal to the control element on the solenoid valve 611. At this time, the control element will control the solenoid valve 611 to open, so that the gas in the air cavity 5 flows into the air column 61. The solenoid valve will not be closed until the air pressure is restored. 611, the outer periphery of the air column 61 is provided with a plurality of air pressure holes 613, the diameter of the air pressure holes 613 gradually decreases from the inside to the outside, the speed of the gas flowing through the air pressure holes 613 gradually increases, and the air pressure gradually increases, so that when the gas flows between the inner wall of the support column 62 and the surface of the air column 61, sufficient gas pressure is generated to lift the air column 61 and the lens installed on the air column 61, so that a gas film is formed between the air column 61 and the support column 62 to prevent the vibration from being directly transmitted to the support column 62. The support column 62 is vertically installed on the upper end of the base 1, the air column 61 is installed on the inner side of the support column 62, and the flexible connecting piece 63 is connected between the upper end of the support column 62 and the upper end of the air column 61. The flexible connecting piece 63 is an integrally formed annular corrugated tube-shaped diaphragm, the inner ring edge of which is airtightly connected to the upper end of the air column 61, and the outer ring edge is airtightly connected to the upper end of the support column 62, which is used to seal the gap between the air column 61 and the upper end of the support column 62, and at the same time reduce the transmission of vibration between the air column 61 and the support column 62.

[0041] A frustum 614 is provided at the lower end of the air column 61, and air pressure holes 613 are provided at the upper and lower ends of the frustum 614. The air pressure holes 613 at the lower end of the frustum 614 are more densely packed than the air pressure holes 613 at the upper end of the frustum 614, and the air pressure holes 613 at the upper and lower ends of the frustum 614 are evenly distributed. In this scheme, the frustum 614 is provided, and since the air pressure holes 613 at the upper and lower ends of the frustum 614 are evenly distributed, the air flow blown out of the air pressure holes 613 is equal everywhere around the air column 61, so that the air column 61 is always in the axial position of the support column 62. At the same time, since the air pressure holes 613 at the lower end of the frustum 614 are more densely packed than the air pressure holes 613 at the upper end of the frustum 614, the air column 61 can be suspended to avoid direct contact with the support column 62, thereby preventing vibration from being transmitted to the lens through the support column 62 and the air column 61.

[0042] The positive pressure assembly 7 includes a positive pressure chamber 71 and a support rod 72. The positive pressure chamber 71 is fixedly installed inside the shell 2. The support rod 72 is connected between the positive pressure chamber 71 and the shell 2. A plurality of air inlet holes 711 are evenly opened on the side wall of the positive pressure chamber 71. The diameter of the air inlet holes 711 gradually decreases from the inside to the outside. The positive pressure chamber 71 is connected to the shell 2 through the support rod 72. A plurality of air inlet holes 711 are opened on the wall of the positive pressure chamber 71. The gas in the air cavity 5 enters the positive pressure chamber 71 through the air inlet holes 711. Since the diameter of the air inlet holes 711 gradually decreases from the inside to the outside, the gas in the air cavity 5 is discharged from the positive pressure chamber 71. The gas enters from the side with a smaller aperture. In the process of entering the positive pressure chamber 71, the flow rate of the gas slows down, further reducing the disturbance of the gas. At the same time, the gas forms a positive pressure space inside the lens. Since it is difficult to achieve complete sealing of the lens during installation, the internal high-pressure gas will slowly blow outward through the seal to prevent oil and dust from entering through the seal. When the air pressure in the positive pressure chamber 71 increases to the same level as that in the air chamber 5, the gas will no longer enter the positive pressure chamber 71 in large quantities due to the pressure difference. The flow rate of the gas in the positive pressure chamber 71 and the air chamber 5 will be further reduced, so the disturbance of the airflow has little effect on the precision equipment inside the lens.

[0043] The support rods 72 are evenly distributed outside the positive pressure chamber 71. The cross section of the support rods 72 is streamlined, and the support rods 72 are made of elastic metal. The cross section of the support rods 72 is designed to be streamlined to avoid disturbance of the support rods 72 by the high-pressure airflow during high-speed movement. At the same time, the support rods 72 are designed to be made of elastic metal to further reduce the transmission of machine tool vibration to the lens.

[0044] A sub-cavity 64 is installed on the outside of the support column 62, and a connecting pipe 65 is opened between the support column 62 and the sub-cavity 64. When the machine tool generates high-frequency vibration, the support column 62 vibrates accordingly. At this time, the air column 61 will move accordingly in the support column 62, so that the gas in the support column 62 will be quickly moved back and forth between the support column 62 and the sub-cavity 64. In the vibration compression stage, the gas will flow into the sub-cavity 64 to reduce the pressure peak. In the vibration release stage, the gas in the sub-cavity 64 will flow back to the support column 62, slowing down the rebound speed of the air column 61, thereby achieving a shock absorption effect.

[0045] Moreover, the cross-sectional diameter of the parts where the two ends of the connecting pipe 65 connect with the support column 62 and the auxiliary cavity 64 is larger, and the cross-sectional diameter of the middle part is smaller. In this way, when the gas flows through the variable-diameter connecting pipe 65 (the cross-sectional diameters at both ends are large and the cross-sectional diameters in the middle are small), turbulence and friction resistance will be generated due to the sudden change in the cross-sectional area of ​​the pipe, thereby converting the kinetic energy of the gas into heat energy through viscous dissipation, which will significantly consume the vibration energy and thus accelerate the stabilization speed of the gas column 61, further enhancing the shock absorption effect.

[0046] The adjustment component 8 includes a gyroscope 81, a controller 82, a voice coil motor 83 and an adjustment lens 84. The gyroscope 81 is installed inside the positive pressure chamber 71. The controller 82 and the voice coil motor 83 are installed in sequence from back to front at the front end of the gyroscope 81. The adjustment lens 84 is installed at the front end of the voice coil motor 83. A windshield 712 is installed in the positive pressure chamber 71. The windshield 712 is installed on the periphery of the gyroscope 81 and the adjustment lens 84. In the above scheme, the gyroscope 81 senses the deviation of the lens caused by the vibration of the machine tool transmitted to the lens, and transmits the corresponding signal to the controller 82. After algorithm analysis, the controller 82 controls the voice coil motor 83 to respond quickly and adjust the angle and position of the lens 84, so that the monitoring lens can completely avoid the high-frequency vibration generated by the machine tool affecting the monitoring effect of the lens. At the same time, by arranging a windshield 712 inside the positive pressure chamber 71, it can further avoid the disturbance of the internal adjustment component 8 due to the entry of gas into the positive pressure chamber 71, thereby affecting the deflection of the adjustment lens 84, and further enhancing the stability of the adjustment component 8 inside the positive pressure chamber 71.

[0047] Working principle: The air pump 4 inflates the air into the air cavity 5. After the gas is filtered by the filter 51, the gas enters the shock-absorbing component 6 through the air cavity 5 so that there is enough air pressure in the shock-absorbing component 6 to form a gas film, avoiding direct solid connection between the lens and the base 1, so that the high-frequency vibration of the machine tool cannot be transmitted to the lens. At the same time, the positive pressure component 7 forms a high-pressure environment inside the lens to prevent external impurities from entering through the gap in the lens, thereby protecting the internal environment of the lens. The adjustment component 8 is used to adjust the lens angle internally to further prevent the accuracy of lens monitoring from being affected by machine tool vibration.

[0048] Positive pressure formation process: Multiple air inlet holes 711 are provided on the wall of the positive pressure chamber 71. The gas in the air cavity 5 enters the positive pressure chamber 71 through the air inlet holes 711. Since the diameter of the air inlet holes 711 gradually decreases from the inside to the outside, that is, the gas in the air cavity 5 enters from the side with the smaller aperture, the flow rate of the gas slows down in the process of entering the positive pressure chamber 71, further reducing the disturbance of the gas. At the same time, the gas forms a positive pressure space inside the lens. Since it is difficult to achieve a complete seal when installing the lens, the internal high-pressure gas will slowly blow outward through the seal to prevent oil and dust from entering through the seal.

[0049] Air curtain formation process: When the air pump 4 ventilates the air cavity 5, the aperture of the air jet hole 52 gradually decreases from the inside to the outside, and the flow rate of the gas gradually accelerates. Under the action of multiple air jet holes 52, an air curtain will be formed on the outside of the protective lens 3 to prevent metal debris from flying during the operation of the machine tool, so as to avoid it from scratching the protective lens 3 and affecting the monitoring accuracy of the lens.

[0050] Air pressure compensation process: When the pressure sensor 612 detects that the gas pressure in the air column 61 is low, the solenoid valve 611 will be opened to allow the gas in the air cavity 5 to flow into the air column 61 until the air pressure is restored, and then the solenoid valve 611 will be closed. The gas flows through the air pressure hole 613 so that when the gas flows between the inner wall of the support column 62 and the surface of the air column 61, sufficient gas pressure will be generated to lift the air column 61 and the lens installed on the air column 61, so that a gas film is formed between the air column 61 and the support column 62 to prevent vibration from being directly transmitted to the support column 62. The flexible connecting piece 63 is an integrally formed annular bellows-shaped diaphragm, which is used to seal the gap between the upper end of the air column 61 and the support column 62, and at the same time reduce the transmission of vibration between the air column 61 and the support column 62.

[0051] The technical features disclosed above are not limited to the combination with other features disclosed. Those skilled in the art can also make other combinations between the technical features according to the purpose of disclosure to achieve the purpose of this disclosure.

Claims

1. An anti-shake zoom lens for machine tool visual monitoring, comprising a base (1), a housing (2), and a protective lens (3), characterized in that: The invention also includes an air pump (4), an air cavity (5), a shock absorbing component (6), a positive pressure component (7) and an adjustment component (8), wherein the shock absorbing component (6) is mounted on the upper end of the base (1), the housing (2) is mounted on the upper end of the shock absorbing component (6), the protective lens (3) is mounted on the front side of the housing (2), the air cavity (5) is opened on the inner side of the housing (2), the air pump (4) is mounted on the rear side of the air cavity (5), the positive pressure component (7) is mounted on the inner side of the air cavity (5), a filter (51) is provided in the air cavity (5), the air pump (4) fills the air cavity (5) with filtered gas, the gas enters the shock absorbing component (6) through the air cavity (5), and forms a gas film in the shock absorbing component (6) for shock absorption, and at the same time, the gas forms a high pressure inside the lens through the positive pressure component (7) to prevent external impurities from entering, and the adjustment component (8) is used to adjust the lens angle internally; The shock absorbing assembly (6) comprises an air column (61), a support column (62) and a flexible connecting piece (63); the upper end of the air column (61) is connected to the lower end of the air cavity (5); a solenoid valve (611) is installed at the connection point; the lower end of the solenoid valve (611) is connected to a pressure sensor (612); a plurality of air pressure holes (613) are opened on the periphery of the air column (61); the diameter of the air pressure holes (613) gradually decreases from the inside to the outside; the support column (62) is installed at the upper end of the base (1); the air column (61) is installed on the inner side of the support column (62); and the flexible connecting piece (63) is connected between the upper end of the support column (62) and the upper end of the air column (61).

2. The anti-shake zoom lens for machine tool visual monitoring according to claim 1, characterized in that: The air cavity (5) is connected to the periphery of the protective lens (3), and a plurality of air jet holes (52) are provided on the periphery of the protective lens (3), wherein the apertures of the air jet holes (52) gradually decrease from the inside to the outside.

3. The anti-shake zoom lens for machine tool visual monitoring according to claim 1, characterized in that: A truncated cone (614) is provided at the lower end of the air column (61), and air pressure holes (613) are evenly distributed at both the upper and lower ends of the truncated cone (614).

4. The anti-shake zoom lens for machine tool visual monitoring according to claim 1, characterized in that: The positive pressure assembly (7) comprises a positive pressure chamber (71) and a support rod (72). The positive pressure chamber (71) is provided inside the housing (2). The support rod (72) is connected between the positive pressure chamber (71) and the housing (2). A plurality of air inlet holes (711) are evenly provided on the side wall of the positive pressure chamber (71). The aperture of the air inlet holes (711) gradually decreases from the inside to the outside.

5. The anti-shake zoom lens for machine tool visual monitoring according to claim 4, characterized in that: The support rods (72) are evenly distributed outside the positive pressure chamber (71), the cross section of the support rods (72) is streamlined, and the support rods (72) are made of elastic metal.

6. The anti-shake zoom lens for machine tool visual monitoring according to claim 1, characterized in that: A secondary cavity (64) is installed on the outside of the support column (62), and a connecting pipe (65) is provided between the support column (62) and the secondary cavity (64).

7. The anti-shake zoom lens for machine tool visual monitoring according to claim 6, characterized in that: The apertures at the connection points between the two ends of the communicating tube (65) and the supporting column (62) and the auxiliary cavity (64) are relatively large, and the cross-sectional diameter of the middle portion is relatively small.

8. The anti-shake zoom lens for machine tool visual monitoring according to claim 4, characterized in that: The adjustment component (8) includes a gyroscope (81), a controller (82), a voice coil motor (83) and an adjustment lens (84), wherein the gyroscope (81) is installed inside the positive pressure chamber (71), the controller (82) and the voice coil motor (83) are installed in sequence from back to front at the front end of the gyroscope (81), the adjustment lens (84) is installed at the front end of the voice coil motor (83), a windshield (712) is installed in the positive pressure chamber (71), and the windshield (712) is installed on the periphery of the gyroscope (81) and the adjustment lens (84).

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