Inspection platform specifications:
200×200-2000×4000.
Inspection platform surface quality inspection:
Use colored hair to inspect. No less than 25 points on each side of the level 0 and level 1 plate is 25 mm square, no less than 20 points for the level 2 and no less than 12 points for the level 3.
Inspection platform accuracy:
According to the national standard metrological verification regulations, the four levels are 0, 1, 2, and 3.
In the production process of the inspection platform, the first consideration is its process structure and performance. On the one hand, productivity must be increased, and on the other hand, quality must be ensured. In the process of use, the integrity of the appearance should be checked to ensure that it is used without defects. If there is a defect, it can be used after repairing.
The inspection platform is used for various inspection tasks, such as the reference plane for precision measurement, the inspection and measurement of various machine tools, the inspection of the dimensional accuracy and the position deviation of the parts, and the precision marking, cast iron plate It is an indispensable product in more than 20 industries such as machine tools, machinery manufacturing, and electronic production.
Inspection platform material:
High-strength cast iron HT200-300.
Testing the hardness of the working surface of the platform:
HB170-240.
Inspection of surface quality of inspection platform:
Inspect by painting method. No less than 25 points on each side of the level 0 and level 1 plate is 25 mm square, no less than 20 points for the level 2 and no less than 12 points for the level 3.
The functional difference between the inspection platform and the marking platform:
The inspection platform is a reference plane for precision measurement in the production workshop or measurement department; the marking platform is used for production Datum plane used for marking.
Although these two flat plates are both reference planes, their processing methods, plane accuracy, and functions are different.
The working surface of the inspection platform dedicated to the coloring method needs to be scraped; the working surface of the inspection platform for other purposes needs to be scraped, ground or polished; the scribing flat surface can be planed. It can be seen that the plane accuracy of the inspection platform is higher than that of the scribing plate.
The inspection plate plays the role of the reference positioning surface when using the coloring method to detect the flatness of the workpiece or as an auxiliary tool for the inspection work to achieve various measurements; the scribing platform acts as a reference surface in the scribing work effect.
Detailed technical parameters of the inspection platform:
Specifications (length×width) mm
Quality inspection standard of inspection platform1. The working surface of inspection plate should not have rust, scratches, bruises and other appearance defects that affect the use. 2. The hardness of the working surface of the inspection plate should be HB170-220. 3. The two opposite sides of the inspection plate should be provided with threaded holes or cylindrical holes for installing handles, rings and other lifting facilities. When designing the hoisting position, consider minimizing the changes caused by hoisting. 4. The working surface of the inspection plate should not have casting defects such as sand holes, pores, cracks, slag inclusions and shrinkage porosity. The surface of various castings should be cleaned of molding sand, and the surface should be smooth, and the paint should be firm. The edges should be blunt. On the flat working surface with an accuracy level lower than "00", the same material is allowed for the sand with a diameter of less than 15mm, and its hardness should be lower than the hardness of the surrounding materials. There should be no more than four blocked parts on the working surface, and the distance between them should be no less than 80mm. 5. The cast iron inspection plate should be stabilized and demagnetized 6. The inspection plate should be made of high-quality fine-grained gray cast iron or alloy cast iron. 7. The scraping process should be used to inspect the flat working surface, and the planing process can also be used for the "3" flat working surface. The surface roughness of the planed working surface should not be according to the contour arithmetic mean deviation Ra value. Greater than 5um 8. According to user requirements, after threaded holes or grooves are set on the working surface of the inspection plate, these parts should not be raised above the working surface. Inspect the flatness of the flat working surfaceInspecting the flatness of the flat working surface refers to the distance between two parallel planes that contain the actual working surface of the flat panel and have the smallest distance. The value can be According to the verification results of the diagonal method and the loop method, it is obtained by "base surface transformation". The flatness of the flat working surface is the main accuracy index to measure the quality of the flat panel. The accuracy level of the flat panel is determined according to the allowable value of the flatness tolerance of the flat panel working surface. Therefore, it is necessary to pay attention to the verification of the flatness of the flat panel working surface. The accuracy of the flatness verification of the flat panel is the guarantee of the quality of the flat panel. Line point layout, coincidence degree, uncertainty of verification tool verification, verification method, evaluation principle, data processing are the keys to the accuracy of flatness verification of flat panel. Pay attention to these problems when verifying flatness of flat working surface, which will help improve the quality of verification. Test conditions and requirements for flat panel verification1. Temperature and temperature change What are the requirements for temperature in flat panel verification? The verification adds the requirement of a given temperature (20±3) ℃ for the 00-level plate, and requires that the verification temperature of the 00-level and 0-level plates should not exceed 1 ℃/h. It is required that the temperature of the flat panel verification site is within the range specified in the table.
Before verification, the time for the verification tool to equilibrate the temperature at the verification site for no less than 4h, The time for the equilibration temperature of the verification site should be in accordance with the following table. Equilibrium temperature schedule
Check the flat surface The original data of degree of flatnessUsually, the measured distance from the measurement base is called the original data of flatness error. When the orientation of the measurement base is consistent with the evaluation base, the original data can be used to obtain the flatness error value according to the evaluation principle; but when the orientation of the measurement base is inconsistent with the evaluation base, the original data needs to be processed to determine Find out the specific orientation of the evaluation base surface to find the flatness error value. If the evaluation principle based on the evaluation does not meet the definition of flatness error, then the flatness error obtained must be processed by the principle of minimum condition (that is, re-evaluation) before it can meet the requirements. Flatness error value. That is to say, the result of the original assessment is used as the original data of the latter assessment. The flatness error value obtained by the diagonal principle and the circle method principle does not meet the requirements of the minimum condition. Therefore, the distance from the measurement base surface obtained by the diagonal principle and the circle method principle is usually used as the minimum condition principle to evaluate the flatness error Raw data. Specifications for the rigidity index of the test plateWhenever a load of 250N (1N=0.102kgf) is applied to the center of the work surface of the test plate, the plate deflection should not exceed 1m. During the test, the deflection value of each level of the plate should not exceed half of the flatness tolerance value of the 00 plate. For various specifications of flat plates, in the concentrated load area in the center of the working surface, the specific indexes of the applied rated load and allowable deflection value are shown in the following table. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Specifications/mm×mm | Diagonal d | Concentrated load area &D circle | Rated load/N | Allowable deflection value u/m | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
/mm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
160×100 | 189 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
160×160 | 226 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
250×160 | 297 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
250×250 | 353 | 120 | 375 | 1.5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
400×250 | 472 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
400×400 | 566 | 500 | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
630×400 | 746 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
630×630 | 891 | 190 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
800×800 | 1131 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1000×630 | 1182 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1000× 1000 | 1414 | 625 | 2.5 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1250×1250 | 1768 | 300 | 750 | 3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1600×1000 | 1887 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1600×1600 | 2262 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
250×1600 | 2968 | 1000 | 4 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
4000×2500 | 4717 | 1500 | 6 | td> |
What are the specific functions of the inspection platform
The inspection platform is a platform produced with a high degree of platform. The flatness can be divided into 0 according to the standards of the Ministry of Machinery. ,1,2,3 levels, according to the accuracy of the inspection work to choose different accuracy. There are four specific uses of the platform:
1. Reference surface for angle measurement: Using a flat plate as a reference surface, with a sine bar and angle gauge, angle measurement can be performed.
2. Reference plane for parallelism measurement: Fix the gauge seat, then make the gauge pointer contact above the surface of the object to be measured, move the object to be measured, and check the parallelism between the workpiece surface and the flat surface.
3. Datum surface for height measurement: Place the object to be measured and the gauge base on the platform for height comparison measurement, and finally compare its height with the standard block gauge.
4. Datum plane of marking: It can be connected with the size of the work drawing for marking work.
Inspection platform installation and maintenance series knowledge
When installing the inspection platform, try to adjust the level of the working surface of the plate as much as possible, and the support used to support the plate should be supported at the main fulcrum, so Can prevent deformation of the plate. When using the inspection platform, after the inspection or the marking work is completed, the casting or workpiece should be removed from the plate to prevent the large casting from being pressed on the plate for a long time to cause the plate to deform. After using the plate, you need to clean the working surface of the plate, and then brush a layer of anti-rust oil on the surface of the plate. If the plate is not suitable for a long time, if you want to brush a layer of anti-rust oil or butter on the surface of the plate, it is best to wrap a layer of oil paper. If you keep the wooden packaging cover when you purchased the inspection platform, it is best to use the packaging cover to cover the plate when you do not use the plate. The place where the inspection platform is placed needs to be dry and ventilated. It is best not to place it in a damp place, let alone drop water on the plate. Finally, the tablet needs to be inspected regularly. The inspection cycle can be determined according to the specific conditions of use. Usually, it needs to be inspected every 6 months to 12 months. Debugging method of the inspection platform
Inspection panelBefore use, the panel should be fixed and debugged by professionals before it can be used. Then how can we achieve the correct installation What about debugging? The specific method is as follows:
First step, before using the tablet, a professional staff is required to test and debug the inspection tablet, and then use it after debugging. When installing the flat platform, place the bracket that supports the inspection flat at the main support point. When supporting, the working surface of the inspection plate should be adjusted to the horizontal plane.
The second step, when using the inspection plate, the mechanical equipment parts should be handled with care to prevent the mechanical equipment parts from violently colliding with the inspection plate. If the surface of the plate collides with mechanical parts, repair the concave or convex part of the impact before continuing to use it.
The third step, inspection plate, should keep the surface clean, and clean the surface of the plate in time after use to prevent the mechanical parts on the surface of the inspection plate from falling off Iron filings, sand or other impurities. These iron filings and impurities can easily react with the cast iron on the surface of the testing plate in humid air, causing rust and corrosion on the surface of the scribed plate. Even if it is not in humid air, these impurities can easily scratch the surface of the inspection plate and cause the accuracy of the plate to decrease. Therefore, it must be cleaned in time.
The fourth step, the use of testing plate should try to keep all parts of the plate evenly used to avoid partial wear due to excessive use.
Step 5. When installing mechanical equipment parts, do not install on the inspection plate, and do not use hammers, pliers and other tools to hit the plate.
Step 6, Inspection plate After use, it should be wiped clean. If not used for a long time, anti-rust oil should be applied to the surface of the marking plate to prevent it from rusting.
The seventh step, the handling of the inspection plate should be cautious, and rough operation is strictly prohibited.
Step 8. Inspection panel should be placed in a dry and ventilated warehouse for storage, not in a cold and humid place, let alone dripping water On the surface of the tablet.
Finally, the inspection plate cannot be stacked and stored to prevent the deformation of the inspection plate due to stacking and extrusion.
