推荐回答(2个)
多数手表可以快拨日历,用于迅速调整日历数字,一般当表把拔出一档就可以快拨日历了。这个时候与跨轮啮合的拨针轮会脱离转向与日历快拨轮啮合,日历快拨 轮是个摇摆的齿轮,也就是说它的轴眼是个长形孔,因此只有表把在某一个方向转动时,在齿轮啮合点的切线力的作用下,它才会靠近并咬合日历字盘的齿并转动 它。日历快拨轮往往很少,也就3-5个齿吧。从晚上8点开始到早上4点跳历完毕这段时间内,请不要做日历的调校。
帝舵手表知识:日历现将各组成部分分别介绍如下。(1)日历传动系日历传动系是时轮传出式。时轮与日跨轮片啮合,日跨齿轴与拨日轮啮合,经二级减速传动,使减速比为音。啮合齿轮的齿数为:时轮27齿,跨轮片有21齿,6跨齿、14齿,拨日轮36齿。(2)日历控制系其控制系比较简单,采用半圆形弹性簧与拨日轮铆合一体,实际是一弹性拨头,但无储能作用,故称为慢爬式。换日时间约为1.5小时。用手倒拨针时,拨头受到日历环齿的作用能径向位移,故日历环不会倒退或抖动,(3)日历定位系由“刀”形定位杆和健位杆簧组成,保证日历环的复位和定位。(4)日历显示系采用薄片日历环,表形为三角形。日历环径向以主夹板圆台和内齿定位,轴向以主夹板棺和两压片定位。2.日历调整机构由图5-12可知,日历调整机构采用拨针轮浮动和快拨轮固定的结构形式,利用拉柄在不同档上,使拨针轮位置变化而实现日历的调整。在第一档时,受拉档控制的摇板轴上的拨针轮不与任何齿轮相啮合,故只能上条。在第二档时,拉档钉推动摇板,使拨针轮与快拨轮相啮合。因快拨爪与快拨轮铆合在一起,在转动柄头时快拨爪与快拨轮一起旋转,拨动日历环快速变换日期。又因快拨轮是固定式,则正反转柄时均可换日,但方向相反;在第三档时,摇板继续摆动,拨针轮与快拨轮脱啮而与跨轮片啮合,转动柄头可进行正反拨针。再次,由于采用了弹性拨头,在任何时间内都能进行快速换日,即无禁区。
修理帝舵官网表日历机构和日历调整机构时应注意的事项(1)弹性拨头与定位杆簧弹力的搭配问题在配制定位杆簧时,定位杆赞压住定位杆的弹力必须大于反拨针时弹性拨头对日历环的弹力,否则会使日历环倒退换日。但定位杆簧弹力又不宜太大,太大会过多损耗基础机芯供给的能量,影响摆轮摆幅降。(2)快拨爪和快拨轮的装配将二者压合在轴上,绕压簧片上孔转动。清洗后,此处一定要注油。否则会出现转动不灵活或加剧磨损,影响快拨的性能。
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