Suzhou Lefeng Precision Instrument Co., Ltd(German Japanese Maintenance Department)We are a professional service center specializing in measuring tools and instruments for brands such as Sanfeng in Japan and Mal in Germany. The company has strong technical strength, with multiple engineers from the world's largest measuring tool manufacturing enterprises. The accessories are imported with original packaging, and the measuring laboratory instruments are all imported measuring instruments to solve the problem of poor accuracy after maintenance for customers. The quality service is supported by the metrological quality inspection department, which issues relevant maintenance product inspection reports, and has established a long-term stable cooperative relationship with the general agent of "Mitutoyo" and "Mahr". It is one of the most professional measuring instrument maintenance service providers in mainland China.
Professional maintenance: calipers, height gaugesdial indicator, dial gauge, micrometerInternal and External Diameter ScaleThickness gauges, roughness meters, 2D height gauges, tool microscopes, etc.
Service commitment: Provide free on-site pickup, free fault detection, and within 2 days of quick repair service
Quality assurance: The accuracy of the repaired products meets the national precision standards
Warranty period: Non human damage, 3-month warranty for similar faults

Common faults and repair methods of leverage gauges

(1) The adjustment of the balance spring, the balance spring of the lever watch is on the central axis of the watch. Its function is to eliminate the clearance between gears and stabilize the indicated value. Its specifications are relatively small (about equivalent to the balance spring of a medium-sized pocket watch). When adjusting, the balance spring and the snap ring should be removed from the central axis. Place it flat on a glass plate to see the deformed part, hold a pair of tweezers in each hand, fix the balance spring with the tweezers in the left hand, and gently adjust the starting point of the deformed part with the tweezers tip in the right hand. Or move it in the opposite direction of deformation. The amount of hand force depends on the size of the deformation. If it cannot be corrected at once, it can be corrected multiple times until the balance spring is flat and the distance between circles is even. This adjustment method is generally suitable for 1-3 circles of wire deformation. If the number of deformation circles is too many, it can be corrected multiple times
The hairspring are all messy. They should be replaced with new ones.
(2) If the wrapped needle is damaged and the fit with the central axis is loose, a semi-circular punch can be used to punch the needle pants appropriately to increase the fit tightness and bending of the needle rod
When in shape, tweezers can be used to straighten the needle bar in the opposite direction of the bend. If the damage is severe and cannot be repaired, the minute or second hand of a pocket watch can be modified, as long as the needle hole matches the central axis well. The fruit application is still quite ideal.
(3) The adjustment and repair of the interlocking between the center wheel and the sector wheel are mostly caused by collisions, falls, and other reasons that result in poor gear interlocking
If the reading is unstable and the probe is turned, the indication will not work properly. If it is too heavy, the gauge needle will not move or become deformed, making it unusable. Due to the extremely small transverse number of gears, adjusting the bite clearance to ensure that the two gear bite tables are in the best possible state is the key to repairing this table. When adjusting, combine the dial, central axis, dial, etc. and manually move the dial to give the balance spring a pre tightening force. Then install it on the dial body. When installing, let the two gears bite deeper, and temporarily do not tighten the two fixing screws. Use your hand to move the measuring head to the maximum stroke of the dial, and then return to 0 o'clock. Repeat this process several times to gradually reach the appropriate gap between the two gears from the tight bite state. At this point,+move the measuring head, the resistance is minimal, and
Release the quick dial and slow dial a few times, and the pointer will always indicate stability. At this point, you can use a screwdriver to tighten the two fixing screws. For a meter with a commutator, if both the forward and reverse readings of the commutator test are stable, then the gear clearance of the meter has been adjusted and repaired
(4) The adjustment and repair of the tidal head, after long-term wear, will cause the original spherical measuring head to wear into a flat shape, affecting the stability and sensitivity of the readings. At this point, a small steel ball with holes can be found for replacement. Just grind the original measuring head into a smooth rod, install a small steel ball with a hole, measure the distance from the center of the circular hole to the center of the small steel ball, and then drip a little 502 glue to fix it. If the entire probe can be found for replacement, the effect will be better.