High-precision distance-adjustable diameter measuring instrument

Abstract

The utility model relates to the technical field of measuring equipment, and discloses a high-precision distance-adjustable diameter measuring instrument. The technical problems that in the prior art, large-diameter ultrahigh-temperature high-precision measurement cannot be achieved, and the burden of field high-temperature debugging is heavy are solved. The device comprises a left box body and a right box body which are arranged on the two sides of a measured object, a water cooling assembly is sleeved outside the left box body and the right box body, a helium-neon laser transmitter and a telecentric lens are arranged in the left box body, the telecentric lens comprises a biconvex lens which gathers light rays into parallel light, the biconvex lens comprises two convex lenses which are equal in focal length and coincide in focus, and the two convex lenses are arranged in the left box body. A meniscus lens for filtering stray light is arranged between the biconvex lenses, a laser receiver is arranged in the right box body and connected with a photoelectric sensor, and the photoelectric sensor is connected with a computer processor. According to the utility model, the large-diameter ultra-high-temperature high-precision measurement is realized, the burden of on-site high-temperature debugging is reduced, and high-precision measurement can be obtained without too accurate focusing.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to a high-precision distance-adjustable diameter measuring instrument. Background Art

[0002] The diameter gauge is a device used to measure the diameter of various rolled products. It can measure the maximum diameter, minimum diameter, average diameter, ovality and other information online. Its principle is to convert the size signal into an electrical signal through various sensors, and then output the measurement result after processing by the data processing system. According to different measurement principles, the diameter gauge can be divided into many types, including linear array CCD measurement, laser scanning star measurement, etc.

[0003] A Chinese patent document in the prior art: 202310525872.9 discloses a caliper. The caliper includes a limit mechanism, a diameter measuring mechanism and a control mechanism: the limit mechanism and the diameter measuring mechanism both have through holes, which can be sleeved on the periphery of the workpiece to be measured to measure the diameter of the workpiece to be measured; the control mechanism includes a central processing unit and an alarm module, and the central processing unit is respectively connected to the limit mechanism, the diameter measuring mechanism, and the alarm module by signal.

[0004] However, during the implementation of the above scheme, there are at least the following technical problems: 1. Measurement accuracy problem: The limit mechanism and the diameter measuring mechanism are set on the periphery of the workpiece to be measured through the through hole, but due to the difference in the size and shape of the workpiece, the size of the through hole may not accurately match the size of the workpiece, resulting in errors in the measurement results; 2. Positioning problem of the limit mechanism and the diameter measuring mechanism: The limit mechanism and the diameter measuring mechanism need to be accurately positioned on the periphery of the workpiece to be measured to avoid affecting the accuracy of the measurement results. However, in actual operation, due to improper operation or changes in the position of the workpiece, the position of the limit mechanism and the diameter measuring mechanism may be inaccurate, thereby affecting the measurement results. 3. The distance of the object to be measured is not adjustable: The position of the object to be measured, the limit mechanism and the diameter measuring mechanism are fixed, and cannot adapt to workpieces of different sizes and positions to be measured, resulting in inaccurate measurement results, especially when the position of the object to be measured moves. It is difficult to achieve high-precision measurement. 4. It is impossible to achieve high-precision measurement of large diameter, ultra-high temperature, and high precision, and the burden of on-site high-temperature debugging is heavy. Therefore, it is urgent to propose a high-precision distance adjustable diameter gauge. Summary of the invention

[0005] In view of the above technical problems, the present disclosure provides a high-precision distance-adjustable diameter gauge, which solves the problems in the prior art that it is impossible to achieve large-diameter, ultra-high temperature and high-precision measurements, as well as the heavy burden of on-site high-temperature debugging. It further solves the technical problems of low measurement accuracy, large errors, and the position of the object to be measured being fixed and immovable, and difficulty in achieving high-precision measurements when the distance of the object to be measured changes.

[0006] According to one aspect of the present disclosure, there is provided a high-precision distance-adjustable diameter gauge, comprising a left box and a right box arranged on both sides of a measured object, the left box and the right box being provided with water-cooling components on the outside, a helium-neon laser transmitter and a telecentric lens corresponding to the laser beam emitted by the helium-neon laser transmitter being arranged in the left box, the telecentric lens comprising double convex lenses arranged in sequence along the emission direction of the laser beam and capable of converging the light into parallel light, the double convex lenses comprising two convex lenses with equal focal lengths and overlapping focal points, at least one meniscus lens capable of filtering out stray light being arranged between the double convex lenses, a laser receiver capable of sensing the laser beam being arranged in the right box, the laser receiver being connected to a photoelectric sensor capable of converting an optical signal into an analog current signal, and a signal output end of the photoelectric sensor being connected to a computer processor.

[0007] The telecentric lens is made of H-ZK11 optical glass.

[0008] The photoelectric sensor includes a CCD camera device.

[0009] The water cooling assembly includes a water cooling shell, a water inlet and a water outlet connected to a water source are arranged on the side of the water cooling shell, a cold water flow channel connecting the water inlet and the water outlet is arranged inside the water cooling shell, and the cold water flow channel includes a plurality of staggered baffles.

[0010] The water cooling component includes a fin-type water-cooled radiator, which includes a plurality of parallelly arranged cooling fins, a water cooling sleeve is arranged through the middle of the cooling fins, a water inlet pipe connected to a water source is arranged at one end of the water cooling sleeve, and a water outlet pipe is arranged at the other end, and sealing elements are arranged on the water inlet pipe and the water outlet pipe; and it also includes at least one cooling fan arranged above the cooling fins, and a cooling baffle is installed above the cooling fan.

[0011] The beneficial effects of the utility model are:

[0012] It realizes the high-precision measurement of large diameter, ultra-high temperature, and reduces the burden of on-site high-temperature debugging. It can obtain high-precision measurement without too precise light alignment.

[0013] The material used is H-ZK11 optical glass, double convex lens, which aggregates the light; at least two meniscus lenses are set to diverge the light; the combination of multiple lenses integrates the light well, filters out stray light, and overcomes the heat radiation of hot parts, making the parallel light purer;

[0014] The water cooling components installed on the outside of the left and right boxes can effectively control the temperature of the lens and receiver to maintain measurement accuracy and stability;

[0015] The cold water flow channel in the water cooling component adopts a design of multiple staggered baffles, which can optimize the flow and heat dissipation of cold water and improve cooling efficiency;

[0016] The finned water-cooled radiator has a large heat dissipation surface formed by a number of parallelly arranged heat dissipation fins, which can quickly dissipate heat and effectively reduce the heat generated by the left and right boxes during operation;

[0017] One end of the water-cooling jacket is connected to the water source, and the other end is connected to the water outlet pipe. The coolant circulates in the fin-type water-cooling radiator, which can take away the heat and dissipate it into the environment, maintaining the stable operation of the left and right boxes;

[0018] Sealing elements are provided on both the water inlet and outlet pipes to ensure the sealing and fluidity of the coolant and prevent coolant leakage and the entry of external impurities;

[0019] The cooling fan is located above the heat sink, which can accelerate air flow, help the heat sink fins dissipate heat faster, and improve heat dissipation efficiency;

[0020] A heat dissipation baffle is installed above the heat dissipation fan to prevent dust or other debris from entering the radiator, keeping the radiator clean and working efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a caliper in the prior art;

[0022] Figure 2 It is a structural schematic diagram of a telecentric lens of a high-precision distance-adjustable diameter measuring instrument;

[0023] Figure 3 It is a schematic diagram of the water cooling component structure;

[0024] Figure 4 This is a schematic diagram of the structure of the water cooling component from another angle;

[0025] Figure 5 It is a schematic diagram of the structure of a fin-type water-cooled radiator;

[0026] Figure 6 This is a schematic diagram of the structure of the fin-type water-cooling radiator from another angle;

[0027] Figure 7 Schematic diagram of the heat dissipation fin structure;

[0028] The names of the components in the figure are: 1. Helium-neon laser transmitter; 2. Telecentric lens; 3. Front convex lens; 4. Rear convex lens; 5. Meniscus lens; 6. Laser receiver; 7. Photoelectric sensor; 8. Water-cooled shell; 9. Water inlet; 10. Water outlet; 11. Cold water flow channel; 12. Baffle; 13. Heat dissipation fins; 14. Water-cooled sleeve; 15. Water inlet pipe; 16. Water outlet pipe; 17. Sealing element; 18. Cooling fan; 19. Heat dissipation baffle; 20. Object to be measured. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example 1

[0030] This example discloses a high-precision distance-adjustable diameter measuring instrument, see Figures 1 to 7 ,

[0031] It includes a left box and a right box arranged on both sides of the object to be measured 20, and a water-cooling component is installed outside the left box and the right box. A helium-neon laser transmitter 1 and a telecentric lens 2 corresponding to the laser beam emitted by the helium-neon laser transmitter 1 are arranged in the left box. The telecentric lens 2 includes double convex lenses arranged in sequence along the emission direction of the laser beam and capable of aggregating light into parallel light. The double convex lens includes a front convex lens 3 and a rear convex lens 4 with equal focal lengths and overlapping focal points. At least one meniscus lens 5 capable of filtering out stray light is arranged between the double convex lenses. A laser receiver 6 capable of sensing the laser beam is arranged in the right box. The laser receiver 6 is connected to a photoelectric sensor 7 capable of converting an optical signal into an analog current signal. The signal output end of the photoelectric sensor 7 is connected to a computer processor.

[0032] The material of the telecentric lens 2 is H-ZK11 optical glass.

[0033] The photoelectric sensor 7 includes a CCD imaging device.

[0034] The water cooling assembly includes a water cooling shell 8, a water inlet 9 and a water outlet 10 connected to a water source are arranged on the side of the water cooling shell 8, a cold water flow channel 11 connecting the water inlet 9 and the water outlet 10 is arranged inside the water cooling shell 8, and the cold water flow channel 11 includes a plurality of staggered baffles 12.

[0035] During operation, the helium-neon laser transmitter 1 in the left box emits a laser beam. The laser beam aggregates the light into parallel light through the telecentric lens 2. Then, the laser receiver 6 in the right box senses the laser beam, and further converts the optical signal into an analog current signal through a photoelectric sensor (CCD camera device). The signal is then connected to a computer processor for processing. In order to maintain the light transmittance and clarity of the telecentric lens 2, its material is H-ZK11 optical glass. At the same time, the water-cooling components installed on the outside of the left and right boxes can maintain a stable temperature environment, which is used for the measurement of heat-generating objects or high-temperature measurement objects to ensure the normal operation of the entire equipment. The cold water channel 11 can optimize the flow and heat dissipation of cold water.

[0036] Measurement principle of laser diameter gauge: The left and right boxes are equipped with high-speed rotating HeNe laser transmitter and laser receiver. The laser beam emitted by the laser transmitter is processed by a group of lenses to become parallel light. As long as the workpiece blocks the light beam, a signal will be generated on the receiver. This signal is transmitted to a dedicated computer processor through a photoelectric sensor, and the measured diameter value, roundness runout and other parameters can be read out.

[0037] The distance to the measured object is adjustable: The object to be measured by a traditional diameter gauge must be placed in a relatively fixed position. This application uses a diameter gauge with a telecentric lens. As long as the object to be measured is in the light zone, the data is almost the same and the accuracy is high. Because this type of diameter gauge uses a telecentric lens composed of a self-designed lens and an optical path, the optical path forms a relatively uniform light zone, that is, an approximately parallel light zone, after refraction, focusing and splitting through a series of lenses. The image data reflected by the object to be measured in this area is approximately equal, so the change in the transmitted measurement data can be almost ignored, and high-precision measurement is obtained. This telecentric lens is applied to visual measurement and traditional laser measurement, and is used in scenes with different distances or changes in the position and distance of the object to be measured. Changes in position do not affect the measurement accuracy. Example 2

[0038] The principle of this example is the same as that of Example 1, with the specific difference being that: the water cooling assembly includes a fin-type water-cooled radiator, the fin-type water-cooled radiator includes a plurality of parallelly arranged cooling fins 13, a water cooling sleeve 14 is provided through the middle of the cooling fins 13, a water inlet pipe 15 connected to a water source is provided at one end of the water cooling sleeve 14, and a water outlet pipe 16 is provided at the other end, and sealing elements 17 are provided on both the water inlet pipe 15 and the water outlet pipe 16; it also includes two cooling fans 18 arranged above the cooling fins, and a cooling baffle 19 is installed above the cooling fans 18.

[0039] During operation, first, the heat sink fins 13 are arranged in parallel, forming a large heat sink surface together, which helps to quickly dissipate heat. A water cooling sleeve 14 is set through the middle of the heat sink fins, which is responsible for introducing cooling water into the radiator. The coolant can circulate and take away the heat on the heat sink fins 13. The sealing element 17 ensures the sealing of the coolant. In addition, in order to further enhance the heat dissipation effect, a heat sink fan 18 is installed above the heat sink fins to accelerate air flow and help the heat sink fins dissipate heat faster. At the same time, a heat sink baffle 19 is installed above the heat sink fan to prevent dust or other debris from entering the radiator, keeping the radiator clean and working efficiently.

[0040] Although some preferred embodiments of the utility model have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of this application and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-precision distance-adjustable caliper, characterized in that: It comprises a left box and a right box arranged on both sides of the object to be measured, the left box and the right box are provided with water cooling components on the outside, a helium-neon laser transmitter and a telecentric lens corresponding to the laser beam emitted by the helium-neon laser transmitter are arranged in the left box, the telecentric lens comprises double convex lenses arranged in sequence along the emission direction of the laser beam and capable of aggregating the light into parallel light, the double convex lenses comprise two convex lenses with equal focal lengths and overlapping focal points, at least one meniscus lens capable of filtering out stray light is arranged between the double convex lenses, a laser receiver capable of sensing the laser beam is arranged in the right box, the laser receiver is connected to a photoelectric sensor capable of converting an optical signal into an analog current signal, and the signal output end of the photoelectric sensor is connected to a computer processor.

2. The high-precision distance-adjustable caliper as claimed in claim 1, characterized in that: The telecentric lens is made of H-ZK11 optical glass.

3. The high-precision distance-adjustable caliper as claimed in claim 1, characterized in that: The photoelectric sensor includes a CCD camera device.

4. The high-precision distance-adjustable caliper as claimed in claim 1, characterized in that: The water cooling assembly includes a water cooling shell, a water inlet and a water outlet connected to a water source are arranged on the side of the water cooling shell, a cold water flow channel connecting the water inlet and the water outlet is arranged inside the water cooling shell, and the cold water flow channel includes a plurality of staggered baffles.

5. The high-precision distance-adjustable caliper as claimed in claim 1, characterized in that: The water cooling component includes a fin-type water-cooled radiator, which includes a plurality of parallelly arranged cooling fins. A water cooling sleeve is arranged through the middle of the cooling fins. A water inlet pipe connected to a water source is arranged at one end of the water cooling sleeve, and a water outlet pipe is arranged at the other end. Sealing elements are arranged on the water inlet pipe and the water outlet pipe.

6. The high-precision distance-adjustable caliper as claimed in claim 5, characterized in that: It also includes at least one heat dissipation fan arranged above the heat dissipation fins, and a heat dissipation baffle is installed above the heat dissipation fan.

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