1、QUALITY SYSTEMS PROCEDUREWEDM Work Instruction放电机作业规范 IQP: PSC-940Page: 4 of 4Issued: 1-11-20101.0 PURPOSE 目的Define the WEDM operation instruction. 详细说明CNC 操作规范。2.0 SCOPE 范围WEDM operation shall be operated in accordance with this procedure.WEDM 操作需依照本规程.3.0 DEPARTMENT: 涉及部门Tooling department 模具部Qual
2、ity System 质量体系4.0 CONTENT 内容4.1 ObjectStandardize the WEDM process for plate.模板线割标准程序。 4.2 ScopeWEDM Work procedure线割作业程序。EquipmentMachine: Makino U32K, UP32j设备: Makino U32K, UP32jWire: OKI 0B-32PZN线：OKI 0B-32PZNClamp system: 3R system夹紧机构：3RDielectric: Distilled Water电解质: 蒸馏水 Working requirementCh
3、eck the identify of plate with the drawing.Ensure plate is same as the design drawing 确认模板跟设计图纸一致。Check the size of outside and layoutIf the layout is different with drawing, call the designer to confirm the validity.如果layout 不同于图纸，请通知设计人员确认。Check the programThe WEDM program is same as the design dr
4、awing before wire cutting. If any doubt, check with the designer immediately线切割加工程序符合图纸设计。如有任何疑问，与设计师检查Check the machine and machining conditionCheck if the wire is enough to cut this plate. Do not replace the wire in one line cut as far as possible. 在线割一块板时候尽可能不换线。Check the condition of machine is
5、good status. Confirm no problem then start working.确保机器运行状况良好，确认没有问题。Inspection equipmentDaily work日常工作According to the point inspection form fill form, such as Clean tank. Clean all parts in contact with dielectric. Empty the used wire in container on time. Check the conductivity of the dielectric.
6、 按照设备检点表认真填写相应点检项目，如：水箱清洁工作。清洁与介质接触的所有部件。倒空的容器中使用的线。检查介质导电性。Calibrate the machine校正。Operating method:First of all, check the parallelism of plate and make sure it less than 0.002mm.首先，检查模板平行度并使其小于0.002mm。Set up properly plate on the machine; clamp the plate with 3R system.建立正确的的板面，用3R系统加紧板面。Check th
7、e flatness of major plate is less than 0.002mm on the machine.检查模板平面度，确保在0.002mm。Set the cutting parameter and condition.设定加工参数与条件。Discharge the dielectric; check again the flatness of plate. If the flatness is over 0.002mm, rework from the step 1.释放电解质，检查模板平面度小于0.002mm。Select the reasonable cutting
8、 parameter (like as feed rate, cutting times and etc).Recommend:Accuracy 0.002Four cuts0.005Three cuts0.01Two cut选择合理的线割参数（比如给进速度，加工时间等。建议精度0.002割四刀，0.005 割三刀，0.01 割两刀。 Make the cutting program according to dimension of the drawing or 2D files.Caution: The real cutting line must think the deviation
9、and remain.编写合理的线割程序按照图纸要求，提醒：真实的线割应该考虑偏差与预留量。Check the program before machining.加工前检查程序。Loose the screw when assembly line, according the order to operate.装线时应松开螺丝，从上面的引导头按顺序到下面的引导头，并紧固储线筒。Ensure the safety when the parts dropping, should bond with magnets or glue.确保掉出的部分的安全，采用磁铁或胶水粘结。according to
10、the program根据程序线割。Check all contours has been cut and all axes has been returned zero before remove insert from the machine.检查所有的轮廓已被切断，在从机器移动入块之前所有轴已经回到零。Check again the flatness of major plate is less than 0.002mm on the machine. 在机器上再次确认模板的平面度，保证不超过0.002。Remove all drop out part after all operati
11、on completed.加工完成后移出所有线割废料。Wash the plate; then clean with water. Dry the plate to prevent rust.清洁模板表面，并保证干燥，以防生锈。Check the dimension according to the drawing. 检查尺寸按照图纸。Clean the tank and parts after machining.清洁水箱，介质在加工完成后。Appendix: The start/end point should be selected at same point, like as 0poi
12、nt. It is easy to take the reference in Jig Grinding.附录，每个孔开始与结束点都应该以0点作基准，为下工序比如JG做参考。The standard of quality check:Following the design drawing, check the relative dimensions. 检查相应尺寸，确保图纸设计要求。Requirement of safety and protection:安全要求。Ensure safety In accordance with the requirements.按照规定要求确保安全。If
13、the work piece is big and heavy, use a powerful magnet to hold to prevent the part drop off to damage the frame or break the thread when the cutting approaches the end.当线割废料太大时，应采取措施防止落料咂坏设备框架或穿线头。When there is any emergency, press “EMG” button.当遇见紧急情况按下急停。5.0REVISION HISTORY O 11-02-2010 initial release of the procedure.
