More Prick Punching
再談側敲復圓
Here is another example. If you look closely you can see that the pivot itself has been damaged by the punch causing it to have a very irregular surface.
另一個案例，如果你近看，你可以看到沖敲已經把軸桿都損傷了，因為已經變成一個非規則的表面了。
And Even More 更多的案例
Prick Punched Bearing Surface with Bushing Installed
側敲復圓用襯套更換
On the left (above) is a prick punched bearing surface viewed with the movement disassembled. With the pivot out of the hole you can clearly see the hole’s oval shape. 左邊的上圖是側敲復圓的拆解機芯後的軸承面。移開齒輪軸後看到的軸承孔，你可以清楚的看到孔已經變成橢圓形了。
On the right is the same hole after being properly repaired with a bushing installed. The bushing has taken away most of the prick marks but you can still see some of the them around the outside of the bushing. This is why prick punching is such an ugly repair, especially on nice antique movements.
右邊的圖是以襯套替換後的圖。雖然襯套已經移除側敲的痕跡，但是仍然可以看到側敲的醜陋痕跡，尤其對保存良好的古董鐘機芯。
Multiple Prick Punch Wounds多個側敲的傷害
Lest you think that prick punching is done on only one or two bearing surfaces on a clock here is a very nice antique chiming movement. Look closely (above) and you can see that this fine movement has been beat silly with a prick punch.
你不要以為側敲復圓，只是在這個保存良好的自鳴鐘機機芯的幾個磨損的軸承上，你可以注意看到這個保存良好的機芯，被做了一大堆側敲的傻事。
More Amateur Wear Repair 再談業餘磨耗維修
Rathbun or Band-Aid Bushings 帶邊的襯套
The band-aid bushings are the three pieces under the slotted steel screws holding them to the clock plate. You can see where their name comes from. Remember that wear causes an elongated hole that moves the pivot away from its original center. These “bushings” enable a “repairman” to move the pivot back to center without dismantling the clock.
帶邊的襯套就是那三個被一字螺絲鎖到鐘夾板的有槽狀孔的零件。看這個你就可以知道命名的由來了。記得嗎，磨耗使得軸孔拉長導致支撐軸離開原先的中心點。而這些襯套使得維修人員可以不需拆解機芯，就把軸移回原中心點。
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Use of this type of bushing is often seen defacing antique American strike movements because they have the longer pivots necessary to protrude through the plate far enough for the band-aid bushing to hold it. This saves a great deal of time of course but requires drilling a hole in the clock plate where one did not originally exist. The slotted hole where the screw goes through enables the “repairman” to adjust the “bushing” into the right position and then tighten the screw. Pretty clever perhaps but it is not a proper repair.
使用這類的襯套在損壞的古老美國製時鐘機芯較為常見，由於他有夠長的軸桿穿透鐘的夾板，讓具帶邊的襯套可以套住它。它固然節省很多時間，但它需要在夾板鑽一個原先不存在的洞。槽狀孔是讓螺絲穿過也同時讓維修人員可以調整軸桿的正確位置後再鎖緊螺絲。 或許很聰明吧，但是它不是正確的維修。
Screw In Bushings 鎖入型襯套
Here is another interesting way to repair a worn bearing surface. Once again, like the other two methods (prick punching and band-aid bushing), use of the screw-in bushing enables a “repairman” to “correct” a worn area without dismantling the clock.
這是另外一個有趣的磨耗軸承維修方法，就像其他兩個(側敲復圓及帶邊的襯套)，使用鎖入型襯套，維修人員也不需要拆解機芯就可以維修磨耗的機芯。
A special tool attaches to the plate and allows a hollow drill bit to cut a hole in the plate around the pivot without removing the pivot. The inside of the hole is tapped with threads and a bushing, hopefully of the right size, is then screwed down around the pivot.
將一個特殊的工具架到夾板，就可以用利用空心鑽頭，不需移開軸桿就在軸桿的周圍挖一個洞。洞的內側攻好牙，將一個正確尺寸的鎖入型襯套鎖入套住軸桿。
Seems like a good idea? Wrong! When a bearing surface is worn the pivot is often worn or red as well. Without getting the gear out of the clock you are unable to restore the pivot surface before installing the bushing. (See my “Overhaul” page for more about this)
看起來是很好的創意？ 錯的，當軸孔磨耗時，軸桿通常也有一些損耗或有斑痕。若不將齒輪移出時鐘，你不可能在裝入襯套前將軸桿表面修補好。
Although this method saves time like the others it does not make for a proper long-term repair. The unpolished scarred pivot surface will typically chew up the new screw-in bushing in a relatively short time.
雖然這個方法如同其他方式一樣省時，然而對正確的長期維修也不是正確方式。 不將有斑痕的軸桿表面弄滑順，他將很快的又把新裝的襯套咬壞。
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