方法和详细的操作步骤如下:
1、第一步,需要调整针距时,可以松开波轮,见下图,转到下面的步骤。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/8b13632762d0f703dbad73a018fa513d2697c5ab?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、第二步,完成上述步骤后,根据所需的针迹长度调节波轮的上下运动,也就是说,在调整多个对中刻度之后,拧紧并固定波轮,见下图,转到下面的步骤。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/0b7b02087bf40ad123fb219f472c11dfa9ecceab?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、第三步,完成上述步骤后,当波轮向上移动时,针迹长度越小,即刻度越大,针迹长度越密。
通常用于锁孔或口袋开口处的密集针距,即所谓的小针距,见下图,转到下面的步骤。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/8601a18b87d6277fad0dd44438381f30e924fcab?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、第四步,完成上述步骤后,当波轮向下移动时,针迹长度越大,刻度越小,针迹长度越宽松,针迹长度就越大,见下图。这样,就解决了这个问题了。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/3812b31bb051f819ae3ae536cab44aed2e73e7ab?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)