電火花線(xiàn)切割機隨著(zhù)鉬絲的一次換向，切割面產(chǎn)生一次凸凹，在切割面上出現富于規律的搓板狀，通常直稱(chēng)為“搓板紋”。如果不僅僅是黑白顏色的換向條紋，產(chǎn)生有凸凹尺寸差異，這是不能允許的。應在如下幾處找原因：
Electric spark wire cutting machine with a reversing molybdenum wire cutting surface, a concave, rich of washboard appear in a cutting plane, usually referred to as "washboard straight lines". If it is not only the reversing stripes of black and white color, there is a convex concave dimension difference, which is not allowed. The following reasons should be found.
1絲松或絲筒兩端絲松緊有明顯差異，這造成了運行中的絲大幅抖擺，換向瞬間明顯的撓性彎曲。也必然出現超進(jìn)給和短路停進(jìn)給。
There are obvious differences between the 1 wires and the ends of the silk, which causes the large shakes in the operation and the flexible bending at the moment of change. It is also inevitable that super feed and short circuit stop feed.
2導輪軸承運轉不夠靈活、不夠平穩，造成正反轉時(shí)阻力不一致或是軸向竄動(dòng)。
The 2 guide wheel bearing is not flexible enough and is not smooth enough to cause inconsistency of resistance or axial movement in positive and reverse direction.
3導電塊或一個(gè)導輪對絲的阻力太大，造成絲在工作區內正反張力出現嚴重差異。（兩工作導輪間稱(chēng)工作區）。
3 the resistance of the conductive block or a guide wheel to the wire is too large, which causes the serious difference between the positive and negative tension in the working area. (two the work zone is called the working area).
4導輪或是絲架造成的導輪工作位置不正，V型面不對稱(chēng)，兩V型延長(cháng)線(xiàn)的分離或交叉。
The working position of the guide wheel is not correct, the V face is asymmetrical, the two V type extension line is separated or crossed by the 4 guide wheel or the silk frame.
5與走絲換向相關(guān)的進(jìn)給不勻造成的超前或滯后會(huì )在斜線(xiàn)和圓弧上形成臺階狀，也類(lèi)似搓板紋。
5 associated with the wire feed reversing unevenness caused by lead or lag will be formed in the slash and stepped on the arc, similar washboard pattern.
6“皮帶效應”使運轉的絲每換向一次，就完成了一次處于“輪前或輪后”的一次交替，“松緊交替”是一條搓板紋的基本成因。
6 "belt effect" to the operation of each wire for the first, the completion of a "in an alternating round before or round", "an alternate" is the fundamental cause of a washboard pattern.
凡出現搓板紋，一個(gè)最主要原因是絲在工作區（兩導輪間稱(chēng)工作區）上下走的不是一條道，兩條道的差值就造成了搓板凸凹的幅度，機械原因是搓板紋的根本。導輪，軸承，導電塊和絲運行軌跡是主要成因。進(jìn)給不勻造成的超前或滯后當然也是成因之一。
Where the washboard pattern, one of the main reasons is the wire in the work area (two guide said work area) on the go is not a road, two road, the difference will cause the magnitude of mechanical punch washboard, the reason is the basic pattern of the washboard. The main causes are the guide wheel, the bearing, the conductive block and the track of the wire. The advance or lag caused by the unevenness of feed is also one of the causes.
還有一種搓板紋，它的周期規律不是按鉬絲換向的，而是以X、Y絲杠的周期變化，成因是絲杠推動(dòng)拖板運動(dòng)的那個(gè)臺階或軸承運轉不夠穩定產(chǎn)生了端面跳動(dòng)，或是間隙較大，存有異物出現了端面跳動(dòng)的那種效果。
There is also a washboard pattern, it is not according to the cycle of molybdenum wire reversing, but by the periodic change of X, Y screw, screw drive causes is the steps or the operation of the bearing carriage movement is not stable produce ending beat, or a large gap, there are foreign bodies appeared that the end face runout.
總之，只要證實(shí)是以絲杠的周期而變化的切割缺陷，就應到那里去找一找原因。斷定這一成因的最好的辦法是切450斜線(xiàn)，其周期和造成缺陷的原因可一目了然。
In a word, as long as it is proved that the cutting defect is changed with the cycle of the screw, we should go there to find a reason. The best way to determine this cause is to cut the 450 slash, the cycle and the cause of the defect can be clear at a glance.
搓板紋造成光潔度差僅是其一，同時(shí)帶來(lái)效率變低，頻繁短路開(kāi)路會(huì )斷絲，瞬間的超進(jìn)給會(huì )使短路短得很死以至停止加工。
The washboard pattern caused by poor finish is only one, at the same time bring low efficiency, frequent short circuit will open broken wire, instant super feed will make short very dead and stop processing.