Wall thickness measuring equipment for pressureless sintering silicon carbide ceramic thick-walled tube biscuit
The system of rotating synchronous wheels driven by infrared gratings and servo motors has solved the problem of measuring the wall thickness of thick-walled silicon carbide ceramic tubes, achieving efficient and low-cost wall thickness monitoring and ensuring product quality.
Patent Information
- Application Number
- CN202423284434.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing technologies lack effective and economical methods to measure the wall thickness of isostatically pressed silicon carbide ceramic thick-walled tubes, making it difficult to monitor wall thickness deviations, and existing imaging equipment is expensive.
A rotating synchronous wheel system driven by an infrared grating and a servo motor is used to collect wall thickness data of silicon carbide ceramic thick-walled tubes at multiple points through the infrared grating. Combined with the control device, the data is analyzed to achieve accurate measurement of wall thickness and judgment of deviation.
This technology enables precise measurement of the wall thickness of silicon carbide ceramic thick-walled tubes, reducing measurement costs, improving product quality, and minimizing defective products flowing into the next process.
Smart Images
Figure CN223564962U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to silicon carbide ceramic tube thickness measurement technical field, specifically related to a wall thickness measuring equipment of pressureless sintering silicon carbide ceramic thick wall pipe pipe blank. BACKGROUND
[0002] Silicon carbide ceramics have good hardness, high temperature strength and corrosion resistance, and are widely used in chemical industry, metallurgy, aviation and other fields. But the silicon carbide ceramic blank has the characteristics of not conducting electricity, and there is no better measurement method for thick wall pipe, especially for the silicon carbide ceramic pipe made by isostatic pressing forming method, the influencing factors of wall thickness are more, and the wall thickness deviation cannot be monitored easily, such as selecting the existing imaging equipment for detection, which is expensive and high in cost. UTILITY MODEL CONTENTS
[0003] In order to overcome the above technical problems existing in the prior art field, the purpose of the utility model is to provide a wall thickness measuring equipment of pressureless sintering silicon carbide ceramic thick wall pipe pipe blank, which solves the problem of wall thickness measurement of thick wall pipe of isostatic pressing forming, realizes the monitoring of the blank, ensures that the defective products are removed before sintering, greatly improves the quality of products and saves energy consumption.
[0004] The wall thickness measuring equipment of pressureless sintering silicon carbide ceramic thick wall pipe pipe blank provided by the utility model comprises a base, a support, a crossbeam, an infrared grating, a ceramic blank pipe mounting device and a control device, the support is installed on the base, the support comprises a left support and a right support, the base is provided with two, the left and right supports are respectively installed on the two bases, the crossbeam is installed on the left and right supports, the infrared grating is provided with a plurality of, and is distributed equidistantly on the crossbeam, the ceramic blank pipe mounting device is arranged at the middle upper part of the support, the control device comprises a control cabinet, a servo motor and a rotating synchronous wheel, the control cabinet is electrically connected with the servo motor, the servo motor is connected with the rotating synchronous wheel, the rotating synchronous wheel is connected with the ceramic blank pipe mounting device, and the control cabinet is in communication connection with the infrared grating.
[0005] The crossbeam is locked and installed on the left and right supports through screws.
[0006] The ceramic blank pipe mounting device comprises a left positioning shaft, a right positioning shaft, a left rotating chuck and a right rotating chuck, the left rotating chuck and the right rotating chuck are symmetrically installed on the left and right supports through bearings, and the left positioning shaft and the right positioning shaft are fixed on the left rotating chuck and the right rotating chuck.
[0007] Further, the left positioning shaft and the right positioning shaft are respectively inserted into the two ends of the ceramic blank pipe, and then are respectively fixed on the left rotating chuck and the right rotating chuck.
[0008] One of the left rotating chuck, right rotating chuck is connected with a rotating synchronous wheel.
[0009] The output end of the servo motor is connected with a gear, and the rotating synchronous wheel is externally meshed with the gear.
[0010] The wall thickness measuring equipment for the pressureless sintering silicon carbide ceramic thick-walled pipe pipe blank has the advantages that the structure is simple, the servo motor drives the rotating synchronous wheel and the ceramic pipe blank pipe rotates, the infrared grating samples according to the set sampling number and performs operation, the thickness and the wall thickness deviation of the non-conductive product can be accurately tested, and compared with a projection instrument, the procurement cost and the maintenance cost are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the overall structure schematic diagram of one embodiment of the utility model;
[0012] Marked in the figure:
[0013] 1. Control cabinet; 2. Screw; 3. Infrared grating; 4. Electric wire; 5. Rotating synchronous wheel; 6. Servo motor; 7. Gear; 8. Right support; 9. Base; 10. Right rotating chuck; 11. Right positioning shaft; 12. Ceramic pipe blank pipe; 13. Left positioning shaft; 14. Left rotating chuck; 15. Crossbeam; 16. Left support. DETAILED DESCRIPTION
[0014] Below, referring to the drawings, the wall thickness measuring equipment for the pressureless sintering silicon carbide ceramic thick-walled pipe pipe blank provided by the utility model is specifically described in combination with one embodiment.
[0015] EMBODIMENT
[0016] Referring to Figure 1 , the wall thickness measuring equipment for the pressureless sintering silicon carbide ceramic thick-walled pipe pipe blank of the embodiment comprises a base, a support, a crossbeam 15, an infrared grating 3, a ceramic pipe blank pipe mounting device and a control device, the support is installed on the base, the support comprises a left support 16 and a right support 8, the base 9 is provided with two, the left and right supports are respectively installed on the two bases, the crossbeam 15 is installed on the left and right supports, the infrared grating 3 is provided with a plurality of and is equidistantly distributed on the crossbeam 15, the ceramic pipe blank pipe mounting device is arranged at the middle upper portion of the support, the control device comprises a control cabinet 1, a servo motor 6 and a rotating synchronous wheel 5, the control cabinet 1 is electrically connected with the servo motor 6 through an electric wire 4, the servo motor 6 is connected with the rotating synchronous wheel 5, the rotating synchronous wheel 5 is connected with the ceramic pipe blank pipe mounting device, and the control cabinet 1 is communicatively connected with the infrared grating 3.
[0017] The crossbeam 15 is locked and installed on the left and right supports through a screw 2.
[0018] The ceramic green pipe mounting device comprises a left positioning shaft 13, a right positioning shaft 11, a left rotating chuck 14 and a right rotating chuck 10, the left rotating chuck 14 and the right rotating chuck 10 are symmetrically mounted on the left and right supports through bearings, and the left positioning shaft 13 and the right positioning shaft 11 are fixed on the left rotating chuck 14 and the right rotating chuck 10.
[0019] One of the left rotating chuck 14 and the right rotating chuck 10 is connected with a rotating synchronous wheel 5.
[0020] The output end of the servo motor 6 is connected with a gear 7, and the rotating synchronous wheel 5 is externally engaged with the gear 7.
[0021] In the isostatic pressing forming process of the ceramic green pipe 12, the roundness and uniformity of the outer circle are very good through the selection of the mold, and only the wall thickness control may deviate, the present application adopts the mode of taking the inner hole of the ceramic green pipe as a fixed point and taking the inner hole as a reference line, measures the circumference of the whole green pipe with thick wall through a single infrared grating, adopts multi-point collection, and then calculates the difference between the multi-point collection data and the distance between the infrared grating and the center positioning shaft, which is the wall thickness of the ceramic green pipe.
[0022] Specifically, the infrared gratings are equidistantly distributed on the cross beam 15 according to the monitoring requirements, the length of the cross beam 15 is selected according to the length of the ceramic green pipe 12, the left positioning shaft 13 and the right positioning shaft 11 are respectively placed into the two ends of the ceramic green pipe 12, the outer diameter size of the left and right positioning shafts is consistent with the inner diameter size of the ceramic green pipe, so as to ensure no gap and avoid error interference, after installation, the left positioning shaft 13 and the right positioning shaft 11 are respectively fixed on the left rotating chuck 14 and the right rotating chuck 10. The left rotating chuck is bearing-mounted and plays a passive rotating role, the right rotating chuck 10 is connected with the servo motor 6 through the rotating synchronous wheel 5, is controlled through the control cabinet, the control cabinet 1 is simultaneously connected with the infrared grating 3 in communication, records the changes of the data, and the data collection frequency is set according to the outer diameter of the ceramic green pipe, that is, the larger the outer diameter, the more the point number, and the smaller the outer diameter, the less the point number.
[0023] The control cabinet controls the servo motor to start, the gear at the output end of the motor rotates, drives the rotating synchronous wheel engaged therewith to rotate, and in turn drives the right rotating chuck, the right positioning shaft, the ceramic green pipe and the left positioning shaft to rotate, at this time, the infrared grating takes samples according to the set sampling number and performs operation, the maximum value of the test data minus the minimum value is the deviation of the wall thickness of the ceramic green pipe, and the distance from the left positioning shaft and the right positioning shaft to the infrared grating minus the average of all data tested by the infrared grating is the wall thickness of the ceramic green pipe. After the data test is completed, whether the ceramic green pipe is qualified is judged according to the alarm system set by the control cabinet, if the ceramic green pipe is qualified, the ceramic green pipe is retained, if the ceramic green pipe is unqualified, the ceramic green pipe is directly destroyed to avoid flowing to the next process, which is simple and fast.
[0024] According to the length of the ceramic green pipe, the length of the intermediate positioning mandrel, i.e. the left positioning shaft 13 and the right positioning shaft 11, can be changed to ensure the straightness of the ceramic green pipe, and different numbers of infrared gratings are added according to the distance to select the measuring points.
Claims
1. An apparatus for measuring the wall thickness of a pressureless sintered silicon carbide ceramic thick-walled tube green body, characterized by: The application relates to a ceramic raw pipe installation device, which comprises a base, a support, a crossbeam, infrared gratings, a ceramic raw pipe installation device and a control device, the support is installed on the base, the support comprises a left support and a right support, the base is provided with two, the left and right supports are respectively installed on the two bases, the crossbeam is installed on the left and right supports, the infrared gratings are equidistantly distributed on the crossbeam, the ceramic raw pipe installation device is arranged at the middle upper part of the support, the control device comprises a control cabinet, a servo motor and a rotating synchronous wheel, the control cabinet is electrically connected with the servo motor, the servo motor is connected with the rotating synchronous wheel, the rotating synchronous wheel is connected with the ceramic raw pipe installation device, and the control cabinet is in communication connection with the infrared gratings.
2. The wall thickness measuring apparatus for a silicon carbide ceramic thick-walled tube green body sintered without pressure according to claim 1, characterized by: The crossbeam is locked and installed on the left and right supports through screws.
3. The wall thickness measuring apparatus for a silicon carbide ceramic thick-walled tube green body sintered without pressure according to claim 1, characterized by: The ceramic raw pipe installation device comprises a left positioning shaft, a right positioning shaft, a left rotating chuck and a right rotating chuck, the left rotating chuck and the right rotating chuck are symmetrically installed on the left and right supports through bearings, and the left positioning shaft and the right positioning shaft are fixed on the left rotating chuck and the right rotating chuck.
4. The wall thickness measuring apparatus for a silicon carbide ceramic thick-walled tube green body sintered without pressure according to claim 3, characterized by: One of the left rotating chuck and the right rotating chuck is connected with the rotating synchronous wheel.
5. The wall thickness measuring apparatus for a silicon carbide ceramic thick-walled tube green body sintered without pressure according to claim 1, characterized by: The output end of the servo motor is connected with a gear, and the rotating synchronous wheel is externally meshed with the gear.