英语翻译1 引言一般把单向送丝速度低于0.2m/s的电火花线切割加工方法称为慢走丝线切割加工.慢走丝线切割具有切割尺寸精度高、表面质量好的特点,能保证好的表面粗糙度、行位精度、基本

英语翻译1 引言一般把单向送丝速度低于0.2m/s的电火花线切割加工方法称为慢走丝线切割加工.慢走丝线切割具有切割尺寸精度高、表面质量好的特点,能保证好的表面粗糙度、行位精度、基本
英语翻译
1 引言
一般把单向送丝速度低于0.2m/s的电火花线切割加工方法称为慢走丝线切割加工.慢走丝线切割具有切割尺寸精度高、表面质量好的特点,能保证好的表面粗糙度、行位精度、基本尺寸精度等.慢走丝线切割的电极丝传送为单向输送,一次性使用,所以不存在电极丝变细的情况.由于慢走丝线切割的走丝速度较慢,电极丝的抖动也较小,能适合大锥度的切割加工.鉴于慢走丝线切割的诸多加工优点,现主要介绍如何采用慢走丝线切割加工层倍增器中最具代表性的大锥度异形孔.
2 加工难点分析
层倍增器是由6个不同板类零件装配而成,材料是S136,经过调质处理后硬度达到35HRC.现选其中最具代表性的一块板为例进行说明.加工难度分析如下：
（1）\x05一般慢走丝线切割加工锥度在0~30°,而此次加工的异形孔锥度为41°,属于特殊的加工类型,零件结构如图1所示.
（2）\x05上、下面4个孔前后异形,一侧是8㎜×6㎜的矩形孔,另一侧是6㎜×8㎜的矩形孔,需要找到它们的共同基准进行加工,可采用“四边分中”的方法选取工件中心作为加工基准.
（3）\x05由于层倍增器各板间有连续塑料熔体流过,前一块板与后一块板的孔需要有较高位置精度来防止漏料,对孔的位置精度及表面质量要求较高,尤其在进行大锥度线切割加工中尤为明显.
（4）\x05由于加工41°的大锥度异形孔需要打特殊的穿丝孔,一般打孔机只能加工直穿丝孔,需要做一个特殊的专用工装.
（5）\x05用正常的加工方法加工此异形孔残料根本无法取出,所以需要编2个程序.用特殊的2次加工方法来完成.
（6）\x05在试加工过程中,由于41°的大锥度使上下导丝嘴错开,切屑液无法冲洗加工部位,极易断丝,这在加工孔的拐角处尤为明显,需要结合机床本身的一些工艺参数和实际加工情况进行工艺参数修改.

英语翻译1 引言一般把单向送丝速度低于0.2m/s的电火花线切割加工方法称为慢走丝线切割加工.慢走丝线切割具有切割尺寸精度高、表面质量好的特点,能保证好的表面粗糙度、行位精度、基本
1 introduction
Generally the one-way wire speed below 0.2 m/s wire cut edm of wire cut processing method as the walk slowly. Take care of wire cut has high precision cutting size and good surface quality characteristics, can guarantee the good surface roughness, do a precision, basic size accuracy etc. Take care of wire cut electrode wire transfer for one-way transmission, disposable, so nonexistent wire electrode thinner. Because of wire cut went silk take a slow speed, wire electrode dithering also small, can suit the bigtaper cutting processing. In view of many of the processing of wire cut take advantage, now mainly introduces how to take care of wire cut processing layer by the most representative in multiplier bigtaper abnormity bores.
2 processing difficulties analysis
Layer multiplier is composed of six plates with different kind parts assembly and become, material is S136, after quenching and tempering treatment 35HRC hardness reach. Now choose one of the most representative board as example to illustrate. Machining difficulty analysis is as follows:
(1) general take care of wire cut processing taper in 0 ~ 30 °, and the processing of abnormity bores taper for 41 °, belongs to the special processing type, shown parts structure as shown in figure 1.
(2), below 4 holes on the side before 8 shape, and the rectangular ㎜ ㎜ x 6 holes, another side is 6 ㎜ 6x8 ㎜ rectangular hole, need to find their common standards for processing, can use "tote the methods select points in" processing center as the workpiece benchmark.
(3) the layer between the plate for multiplier plastic melt flowed, former board after the hole of the board with a higher position precision needed to prevent leakage of hole materials, the surface quality of the position precision and the demand is higher, especially in large taper wire-cutting processing is particularly obvious.
(4) the processing of 41 ° bigtaper abnormity bores needs a special wear silk hole drilling machine, usually only processing straight to wear silk hole, need to do a special special tooling.
(5) use normal processing method processing this abnormity bores residual material cannot remove, so need woven two programs. Use a special 2 times to complete the processing methods.
(6) in try processing process, because the bigtaper ° 41, make fluctuation godet mouth stagger, scraps liquid can't flush the machining parts and could easily broken wires in processing hole, which is obvious, need unifies the corner some process parameters machine itself and the actual processing situation of process parameters modification.