Experimental Study on Cutting Tool of Tungsten Steel in Wire EDM
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摘要: 在慢走丝机床加工平台上搭建了由伺服控制系统控制的主轴系统,进行了刀具的制作研究。通过实验研究了三种不同加工路径、加工路径不同分段进给速度对刀具制作效率的影响,研究不同平移距离对刀具球头形状的影响,通过实验研究刀具削边加工路径对球头直径的影响并分析了原因。分析了加工过程中效率和精度优化的原因。通过本文的研究所搭建的加工平台和加工策略为加工微小型刀具提供了一种方法,加工效率和加工精度的改善为此类刀具制造提供了方法借鉴。Abstract: A spindle system controlled by a servo motor was built on the wire electrical discharge machining tool, the effects of three different machining paths and different feed rates of the machining paths on the machining efficiency of tool were studied experimentally. The effect of the different translation distances on the spherical shape of tool was studied. The reasons for the optimization of efficiency and accuracy were analyzed. The experimental setup and machining strategies were established through the research provide a method for semispherical shape machining tools, and the improvement of machining efficiency and machining accuracy provides a method for manufacturing the present tools.
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Key words:
- wire EDM /
- tungsten tool /
- machining efficiency /
- machining accuracy
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表 1 放电加工参数表
项目 数值 项目 数值 开路电压 127V 冲液压力 0.1 MPa 伺服调节类型 9 电导率 10 μs/cm 脉冲宽度 45 μs 加工模式 修切模式 占空比 0.5 丝张力 9 N 主轴转速 10 r/min -
[1] 孟宪旗, 李海涛. 慢走丝电火花加工表面质量的改善与提高[J]. 模具制造, 2018, 18(1): 63-66 https://www.cnki.com.cn/Article/CJFDTOTAL-MJZZ201801025.htmMENG X Q, LI H T. Improvement of surface quality about EDM[J]. Die & Mould Manufacture, 2018, 18(1): 63-66 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-MJZZ201801025.htm [2] 李晓波. 模具制造中的高速切削和电火花加工技术[J]. 金属加工: 冷加工, 2018(5): 17-18 https://www.cnki.com.cn/Article/CJFDTOTAL-JXGR201805007.htmLI X B. High-speed cutting and EDM technology in mold manufacturing[J]. Metal Processing: Cold Processing, 2018(5): 17-18 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JXGR201805007.htm [3] 杨正杰, 张勇斌, 徐凌羿. 微铣刀在位制备方法研究[J]. 机械科学与技术, 2017, 36(9): 1396-1401 doi: 10.13433/j.cnki.1003-8728.2017.0914YANG Z J, ZHANG Y B, XU L Y. Study on on-site preparation technology of micro-milling tool[J]. Mechanical Science and Technology for Aerospace Engineering, 2017, 36(9): 1396-1401 (in Chinese) doi: 10.13433/j.cnki.1003-8728.2017.0914 [4] 高飞, 白海清, 沈钰. 麻花钻锥面后刀面线切割成形试验研究[J]. 机械设计与制造, 2019(3): 221-224 https://www.cnki.com.cn/Article/CJFDTOTAL-JSYZ201903056.htmGAO F, BAI H Q, SHEN Y. Experimental research on twist drill cone flank forming based on WEDM[J]. Machinery Design & Manufacture, 2019(3): 221-224 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-JSYZ201903056.htm [5] 谢百闳. 线切割放电旋转工件加工监视与控制系统研发[D]. 新北: 华梵大学, 2012: 1-2XIE B H. Development of a machining monitoring and control systemfor wire-cut electrical discharge rotating workpieces[D]. New Taipei: Huafan University, 2012: 1-2 (in Chinese) [6] 巩亚东, 马晓腾, 孙瑶. 基于响应曲面法电火花线切割回转零件实验研究[J]. 东北大学学报, 2018, 39(7): 1005-1010 https://www.cnki.com.cn/Article/CJFDTOTAL-DBDX201807019.htmGONG Y D, MA X T, SUN Y. Experimental study on the wire electrical discharge machining of rotary parts based on the response surface method[J]. Journal of Northeastern University, 2018, 39(7): 1005-1010 (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DBDX201807019.htm [7] QU J, SHIH A J, SCATTERGOOD R O. Development of the cylindrical wire electrical discharge machining process, part 1: concept, design, and material removal rate[J]. Journal of Manufacturing Science and Engineering, 2002, 124(3): 702-707 http://www.onacademic.com/detail/journal_1000037539038810_27ae.html [8] QU J, SHIH A J, SCATTERGOOD R O. Development of the cylindrical wire electrical discharge machining process, part 2: surface integrity and roundness[J]. Journal of Manufacturing Science and Engineering, 2002, 124(3): 708-714 http://www.onacademic.com/detail/journal_1000038562234710_22c0.html [9] 黄暐仁. 大负斜角精微聚晶钻石球型研削工具开发与微小碳化钨模仁加工研究[D]. 台中: 台湾师范大学, 2012HUANG W R. Development of large negative bevel fine polycrystalline diamond spherical grinding tools and research of tiny tungsten carbide die kernel processing[D]. Taichung: Taiwan Normal University, 2012 (in Chinese)