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　　手表是个精密微小的机械装置，即便是有微量的磨损，也都会影响到手表的走时精度，要说手表的磨损，比较大的主要就集中在上弦和拨针机构上。所以，从保养的角度上，还是应该尽量减少拨针的次数，特别是要避免给手表做长时间不停的拨针。拨针不能过紧，如果拨针感觉很紧，对手表会有以下的不好影响:(1)直接对拨针系的轮齿有伤害，容易造成躺轮直齿、小过轮、跨轮轮片齿以及轴的磨损，甚至造成齿尖折断，这也是机械手表最容易发生故障的地方。(2)会导致手表误差的增加，在拨针紧的情况下，拨针时的巨大力矩会附加到传动轮系上，如果是顺时针拨针，手表秒针马上会急速的走快而逆时针拨针时，秒针会停走或倒着走(在手表没有拔把止秒的情况下)。假如发现自己的手表突然感觉拨针异常吃力，建议就不要硬拨了，这需要把表及时送到钟表维修店里去做个检修，以免损伤零件。(3)手表正常的拨针松紧度，应该是不松不紧，松不能松到拨针时候感觉没有“劲”的程度紧不能紧到感觉拨针很吃力。实际上，适度紧的到比较好，因为这个地方磨损比较大，即便是在倒拨针的时候，秒针停走或有短时间的倒退都算是正常的。(4)再有一点，除了松紧度外，拨针的感觉还应该平滑和顺畅，不能有硌硌棱棱，时紧时松的现象。往往是经过维修的手表，容易出现这个情况。一般情况下，手表拨针是倒顺均可的，假如拨针系的齿轮存在较大磨损，齿轮之间啮合不良，就会出现在向某一个方向拨针的时候，有不顺畅和顶齿或滑齿的异常感觉。 watch is a precision micro mechanical device, even if there is a trace of wear, also will affect the accuracy of the clock to watch, watch that wear large handsetting mechanism mainly concentrated in the top chord and on. So, from the maintenance point of view, or should try to reduce the number of the dial, in particular, to avoid to watch for a long time to keep the dial. The pin should not be too tight, if the needle felt tight, have a bad effect on the following Watch: (1) direct damage to handsetting system is easy to cause tooth, lying round straight teeth, small wheels, wheel gear and shaft cross plate wear, and even cause tooth broken, this is also the most prone to failure of mechanical watches. (2) will lead to increased watch error, in handsetting tight, large torque when the dial needle attached to the drive wheel, if clockwise needle, immediately watch the second hand go fast and counterclockwise needle, the second hand will stop and go or go backwards (in watch not pulled out a second stopping condition). If you find your own watch suddenly feel the needle unusually difficult, it is recommended not to hard dial, which requires the table in a timely manner to watch repair shop to do a repair, so as not to damage parts. (3) watches normal dial the tightness, should not loose, loose can not loose to dial the needle when feeling no "strength" degree of tight tight to feel dial needle is very difficult. In fact, moderately tight to wear better, because this place is relatively large, even when the dial needle, the second stop and go or have a short time back is normal. (4) another point, in addition to the elastic givers, dial needle feeling should be smooth and smooth, not Luo Luo arris, spurts phenomenon. Often after the repair of the watch, it is easy to appear this situation. In general, the watch dial needle is inverted can, if there is a big dial needle series gear wear, gear meshing between bad, will appear in a certain direction to the needle, do not feel smooth and abnormal tooth or teeth slip.