Development of CAM system for automatic compound dressing of superabrasive grinding wheels
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摘要: 为了使复合修整方法中的多种工艺更系统地整合，提高成形砂轮的修整效率，结合自主研制的激光–机械复合修整装备，开发一套CAM系统，可根据不同砂轮截面形状，自动规划多工艺、多修整策略下的修整轨迹，计算平面三轴联动修整刀路，自动生成加工代码，同时设计可视化界面仿真加工过程。对青铜结合剂金刚石砂轮进行修整试验，结果表明：该系统可在保证机床不发生碰撞和过切的情况下，生成激光粗修、半精修及机械精修的加工程序，大幅提高复合修整方法的编程效率，修整后的砂轮轮廓误差在9.1 µm以内，圆跳动误差为6.1 µm。
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关键词:
- 成形砂轮 /
- 激光–机械自动化复合修整 /
- 计算机辅助制造 /
- 轨迹规划
Abstract: In order to integrate various processes in composite dressing method more systematically and improve dressing efficiency of forming grinding wheel, a CAM system was developed by combining self-developed laser and mechanical composite dressing equipment. According to different grinding wheel section shapes, the system can automatically plan dressing trajectory under multi-process and multi-dressing strategy, calculate planar three-axis linkage dressing tool path, automatically generate machining code, and design visual interface to simulate machining process. The dressing experiment of bronze bonded diamond grinding wheel was completed. The results show that the system can generate laser rough repair, semi-finishing repair and mechanical finishing machining program without collision and overcutting, and greatly improve the programming efficiency of composite dressing method. After dressing, the grinding wheel profile error was within 9.1 µm and the runout error was 6.1 µm. -
表 1 机床性能参数
Table 1. Machine tool performance parameters
参数名称 数值 U、V、Z行程 $ {l}_{\mathrm{m}\mathrm{a}\mathrm{x}} $ / mm 200；200；300 定位精度 $ {P}_{\mathrm{a}\mathrm{c}\mathrm{c}} $ / μm ±2 重复精度 $ {R}_{\mathrm{a}\mathrm{c}\mathrm{c}} $ / μm ±2 W轴偏转角度 $ \theta $ / (°) ±50 角度误差 $ \theta $er 6″ 主轴Ⅰ转速 $S$1 / (r·min−1) 0～4 000 主轴Ⅱ转速 $S$2 / (r·min−1) 0～3 000 
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表 2 原材料属性
Table 2. Properties of raw materials
参数名称 规格或数值 结合剂 青铜 磨粒 金刚石 粒度 d50 / μm 150 外径（毛坯）$ D $ / mm 125 内径 $ {d}_{1} $ / mm 80 厚度 d2 / mm 18 径向跳动 $ {C}_{\mathrm{e}\mathrm{r}\mathrm{r}} $ / μm 450
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表 3 激光粗修参数
Table 3. Laser roughing parameters
参数名称 参数值 输出功率 P1 / W 200 重复频率 f / kHz 100 砂轮转速 n / (r·min−1) 240 进给速度 $ {V}_{\mathrm{f}} $ / (mm·min−1) 3
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表 4 激光半精修参数
Table 4. Laser semi-finishing parameters
参数名称 参数值 输出功率 $ P $ / W 80 重复频率$ f $ / kHz 100 砂轮转速 $ n $ / (r·min−1) 240 进给速度 ${V}_{{\rm{n}}}$ / (mm· min−1) 1
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表 5 机械修整参数
Table 5. Parameters of machining
参数名称 参数值 砂轮转速 $ {n}_{1} $ / (r·min−1) 1 000 刀具转速 $ {n}_{2} $ / (r·min−1) 1 500 切削深度 $ {a}_{\mathrm{p}} $ / μm 5，2，1 进给速度 $ {V}_{\mathrm{f}} $ / (mm·min−1) 3
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[1] 崔仲鸣. 砂轮修整技术的发展 [J]. 金刚石与磨料磨具工程,2021,41(3):1-4. doi: 10.3969/j.issn.1006-852X.2021.03.001CUI Zhongming. Development of grinding wheel dressing technology [J]. Diamond & Abrasives Engineering,2021,41(3):1-4. doi: 10.3969/j.issn.1006-852X.2021.03.001 [2] 冯克明, 赵金坠, 邢波. 超硬磨料砂轮修整技术综述与展望 [J]. 兵器材料科学与工程,2019,42(2):115-121. doi: 10.14024/j.cnki.1004-244x.20181219.001FENG Keming, ZHAO Jinzhui, XING Bo. Review and prospect of dressing technology of superhard abrasive grinding wheel [J]. Ordnance Material Science and Engineering,2019,42(2):115-121. doi: 10.14024/j.cnki.1004-244x.20181219.001 [3] 单子昭, 周聪, 陈根余, 等. 超硬磨料砂轮不同介质中电火花修整试验研究 [J]. 金刚石与磨料磨具工程,2020,40(5):79-84.SHAN Zizhao, ZHOU Cong, CHEN Genyu, et al. Experimental study on electro-discharge dressing of super-abrasive grinding wheel using different dielectric [J]. Diamond & Abrasives Engineering,2020,40(5):79-84. [4] 张军峰, 李志峰, 王燕燕. ZN蜗杆成形磨削的砂轮修整器设计与软件实现 [J]. 机械设计与研究,2016,32(1):92-95. doi: 10.13952/j.cnki.jofmdr.2016.0023ZHANG Junfeng, LI Zhifeng, WANG Yanyan. Design and software development of wheel dresser for form grinding of ZN worm [J]. Machine Design & Research,2016,32(1):92-95. doi: 10.13952/j.cnki.jofmdr.2016.0023 [5] SHOMURA Y, TAKIMOTO M. Optical profile grinding method and device: JP2001088002 [P]. 2001-04-03. [6] 黄水利, 荣超敏, 尚战亮, 等. 五轴联动电火花成形机床数控系统的研制 [J]. 电加工与模具,2017(S1):53-55. doi: 10.3969/j.issn.1009-279X.2017.z1.013HUANG Shuili, RONG Chaomin, SHANG Zhanliang, et al. Development of CNC system for five-axis coordinated control sinking electro-discharge machines [J]. Electromachining & Mould,2017(S1):53-55. doi: 10.3969/j.issn.1009-279X.2017.z1.013 [7] 焦锋, 李成龙, 牛赢, 等. 砂轮修整技术研究现状与展望 [J]. 中国机械工程,2021,32(20):2435-2448. doi: 10.3969/j.issn.1004-132X.2021.20.006JIAO Feng, LI Chenglong, NIU Ying, et al. Review and prospect of grinding wheel dressing technique [J]. China Mechanical Engineering,2021,32(20):2435-2448. doi: 10.3969/j.issn.1004-132X.2021.20.006 [8] 杨志波, 杨瑞云, 李斌, 等. 金刚石砂轮激光-超声振动复合修整试验研究 [J]. 河南科技学院学报(自然科学版),2016,44(1):46-50.YANG Zhibo, YANG Ruiyun, LI Bin, et al. Experimental research on truing of diamond wheels with laser heating and ultrasonic vibration assistance [J]. Journal of Henan Institute of Science and Technology (Natural Sciences Edition),2016,44(1):46-50. [9] ZHANG C, SHIN Y C. Wear of diamond dresser in laser assisted truing and dressing of vitrified CBN wheels [J]. International Journal of Machine Tools and Manufacture,2003,43(1):41-49. doi: 10.1016/S0890-6955(02)00161-X [10] 王艳, 胡德金, 邓琦林, 等. 激光辅助机械修整金刚石砂轮的温度场分析 [J]. 中国激光,2005(3):431-435. doi: 10.3321/j.issn:0258-7025.2005.03.030WANG Yan, HU Dejin, DENG Qilin, et al. Analysis of temperature field for laser assisted mechanical dressing and truing of diamond grinding wheel [J]. Chinese Journal of Lasers,2005(3):431-435. doi: 10.3321/j.issn:0258-7025.2005.03.030 [11] 陈根余, 卜纯, 邓辉, 等. 激光-机械复合修整超硬磨料砂轮研究 [J]. 中国激光,2012,39(7):59-65.CHEN Genyu, BU Chun, DENG Hui, et al. Research on laser and mechanical compound truing and dressing of superabrasive grinding wheels [J]. Chinese Journal of Lasers,2012,39(7):59-65. [12] 邓辉, 陈根余, 周聪, 等. 超硬磨料砂轮激光修整技术的现状与展望 [J]. 强激光与粒子束,2014,26(7):315-320. doi: 10.11884/HPLPB201426.079002DENG Hui, CHEN Genyu, ZHOU Cong, et al. Status and prospect of laser truing and dressing technique for superabrasive grinding wheels [J]. High Power Laser and Particle Beams,2014,26(7):315-320. doi: 10.11884/HPLPB201426.079002 [13] 李俊杰. 曲线曲面偏置理论研究及其在模具智能设计中的应用 [D]. 上海: 上海交通大学, 2020.LI Junjie. Research on the offset theory of curve/surface and its application in the intelligent design of die and mould [D]. Shanghai: Shanghai Jiao Tong University, 2020. [14] 赵汝岩, 于胜春, 颜仙荣. 曲线偏移算法在CAD软件中的应用 [J]. 计算机工程与设计,2005(2):479-481. doi: 10.3969/j.issn.1000-7024.2005.02.067ZHAO Ruyan, YU Shengchun, YAN Xianrong. Application of algorithm of offsetting curves in CAD [J]. Computer Engineering and Design,2005(2):479-481. doi: 10.3969/j.issn.1000-7024.2005.02.067 -
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