Focus on challenging optical components

A purpose and basic principle, grinding

by:ChangHui     2020-05-09
1. Purpose: 1) The destruction of the removal of fine grinding layer to fulfill the requirements of the appearance of the specified limit ( 2) Essence of shaving shape to round radius of curvature R value of the surface, satisfies the requirement of face book NR and aperture local curvature tolerance ( Andreas) The requirement of 2. Basic principle: by means of mechanical movement, after grinding plate, chemical action between abrasives and glass, so as to achieve the purpose of precision polishing two required fixture, the type and use 1. Grinding dish: used for fine grinding lens 2. Fixture: used for holding the lens, to carry on the fine grinding of 3. Relay fixture: dish 椄 head with the machine, 4 adjustable alignment and height. Or dish: used to repair drill five dish precision. Drilling and repairing dish: used for correction precision grinding dish, ( Drill repair the dish is made from a diamond diamond grain TieFu the curvature of the surface or contorts the curvature of surface, its accuracy is commonly is dish + 2, negative dish 0 ~ - Article 1, repair grinding skin with) A main control points 1, grinding. Look for fixed-point, scars, sand, rupture, the frog skin, corrosion 2. Surface accuracy andreas, vertical edge, book is within the standard 3. The amount of grinding is delta andreas - within the standard - - - - - - - - - - - - - - - - - - Like a circle of astigmatism in surface accuracy deviation ( Oval, saddle, column) Irregular, local aperture ( The high, middle and lower and vertical side) Delta high - - - - - - - - - - - - - - - - - - - When the lens into contact with the original machine, small aperture too thick, convex to concave edge at center, edge 1/2, will appear the phenomenon of elliptic delta low - - - - - - - - - - - - - - - - - - - When the lens into contact with the original device, perfectly, center aperture gap through the throat, too close, edge center bulge outward, edge delta corrosion - 1/2 ellipsoid occurs phenomenon - - - - - - - - - - - - - - - - - - Is often referred to as corrosion, optical lens surface moisture in the air with the outside world, or other material to produce chemical reaction caused by the massive, dot, the phenomenon of fog. Second, all kinds of bad and countermeasures 1 cause of bad project measures scars. Grinding the leather is too thin, not cutting quantity ( Grinding to dish) 2. Grinding skin 綎 too open, Swing too partial) 3. Grinding skin have fall off phenomenon, Grinding skin edge is not neat) 4. When the surface check, the original and the lens did not wipe clean 5. Grinding fluid is too strong, Grinding skin wool stoma blocked) 6. Grinding fluid has 7 impurities. Incoming lenses have impurities, grind cutting eight lenses have scars. When the machine down a long time, take take scratch 9 adsorption are too tight. Don't insert basket action specification ( Wash basket unqualified) 10. Dangerous actions ( In the process of handling overlapping mirror) 1. Replace grinding skin 2. Replace grinding skin ( Swing adjustment) 3. Replace grinding skin ( Grinding skin repairing edges) 4. Surface, the original device with 5 lenses have been face to wipe clean. Dilute the grinding fluid ( Brush plating) 6. 7 filtering or replaced. The area before the 8. To activate the machine after 2 ~ 3 seconds to turn it off and take take 9. Vertically basket action standard ( Wash basket unqualified don't use) 10. 1 stop dangerous aperture. Drill precision of plating is bad, not an average of 2. Grinding the skin not to make up a face, bad match 3. Clamp pad paper uneven ( Not all) 4. Terminal and string of good collocation is not good, fixture at 5 seams. 6 protective film is too thick. Pressure is not heavy, The belt is too loose) 7. Clamp shell is too tight, Edge of the lens too, 8. Grinding skin is too open, The machine precision is bad) 9. Grinding small or large vessel diameter 10. Poor incoming face book 1. Repair the drill plate 2. Longer time to repair the grinding plate, and to make up a three. Mat paper 4. Replacement terminal or string of 5. Spray coating weight 6. Reduce stress, Adjust the belt) 7. Repair clamp shell ( Lens edge chamfer) 8. Replace grinding skin ( Repair the machine) 9. Change the grinding plate diameter 10. Sand area before repair item 1. Incoming aperture is too negative, not to be able to grind, among sand, ( Too is, edge sand mesh) 2. Rubbing the leather is too thin, quantity is not enough 3. 4 grinding fluid is very weak. Material surface is too rough 5. High pressure is too light, string rod 6. Grinding fluid is insufficient, Grinding fluid is improper selection) 1. Incoming NG 2 area before repair. Replace the grinding of leather 3. Adding abrasive powder 4. Material surface coarse 5 area before repair. Increasing pressure, the lower series of lime tree height 6. Add the grinding fluid ( Choose matching grinding powder) The ablation 1. Grinding fluid ( Wash liquid) Temperature is too high, the motor heat fast 2. Finish grinding has been in a timely manner to clean ( Wipe the items improper selection) 3. Wipe a good lens splashed water dust suction part 4. Ground water injection, to promote middle fever caused by 5. Grinding fluid is too strong, The grinding liquid alkali) 6. Grinding skin too dirty 7. Improper selection grinding leather ( Too old) 8, performance is bad. Grinding backlog too long good lenses, Constant temperature) 9. Placed good parts of the lens plate too dirty or oil 10. Grinding powder improper selection ( Corrosion of blue, white, black, dirty mist, meng 11. Bare hand contact lens grinding surface is 1. Add the grinding fluid 2. Easy corrosion department in a timely manner to wipe 3. Finish grinding product with newspaper or white cloth cover 4. Ground water enough into 5. The 6 grinding fluid. Grinding skin scrubbing of 7. Replace the appropriate grinding 8. Grinding good lens washed in a timely manner to 9. Clean the lens tray 10. Choose the appropriate grinding powder 11. Bare hands do not touch the grinding surface bad meat thick 1. Return parts error ( Wear) 2. When measuring the lenses, as measured by 3 in the center. Processing time ( Repair for too long) 1. Replacement parts 2. Movement 3 specification measurements. 1 control surface precision machining time. Drill dish ( Lap dish) 2 surface precision. The new grinding plate has not been running in good 3. Grinding of leather wear 4. Clamp shell black wear or falls off 5. Swing, bunch of rod position or Angle setting not 6. Grinding fluid too thick 7. String rod thimble abrasion, poor fixture rotation 8. Terminal abrasion, poor fixture rotation 9. Grinding fluid injection or less than 10. Ball core is not adjusted the 11. S2 sand liner and grinding plate surface profile does not match the 12. NCG cutting chamfer, partial serious 13 meat. Fall lens TieFu tensile deformation ( Honeycomb plate machining) 14. Clamp shell R bad lenses to produce high precision ( Low and medium) 15. Fixture with shell and the lens diameter too loose or too close to 1. Repair drill plate 2. In grinding dish 3 again. Replace the grinding of leather 4. To replace the black 5. Reset the 6. Add water adjustment of 7. Replacement string rod thimble 8. Replace the terminal 9. Bring a grinding fluid is 10. Readjust the 11. Fixed sand hanging dish or grinding dish 12. Chamfering, incoming inspection, NCG) 13. Adjust the temperature TieFu or single chip processing 14. Fixed clamp shell R value is 15. Processing or fixed clamp shell again
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