应用免穿丝型电火花线切割机床加工汽车连杆裂解槽实验研究

黎毅锋; 刘俊; 何鑫

doi:10.13433/j.cnki.1003-8728.20200582

应用免穿丝型电火花线切割机床加工汽车连杆裂解槽实验研究

doi: 10.13433/j.cnki.1003-8728.20200582

黎毅锋^{1, 2,},
刘俊¹,
何鑫¹

1.
佛山职业技术学院, 广东佛山 528137
2.
广东工业大学机电工程学院, 广州 510006

基金项目:

广东省普通高校青年创新人才项目 2020KQNCX210

详细信息

作者简介:
黎毅锋(1994-), 硕士, 助教, 研究方向为电火花线切割工艺及运动控制, 1241715127@qq.com

中图分类号: TG661;TG142
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- 文章访问数: 111
- HTML全文浏览量: 59
- PDF下载量: 15
- 被引次数: 0
出版历程
- 收稿日期: 2021-03-02
- 刊出日期: 2023-01-25

Experimental Study on Cracking Groove of Automotive Connecting Rod using Wire-free WEDM Machine Tool

LI Yifeng^{1, 2
,},
LIU Jun¹,
HE Xin¹

1.
Foshan Polytechnic, Foshan 528137, Guangdong, China
2.
School of Mechanical and Electrical Engineering, Guangdong University of Technology, Guangzhou 510006, China

摘要

摘要: 为了研究免穿丝型电火花线切割机床加工连杆大头孔内表面双侧裂解槽的质量及效率问题, 以新一代免穿丝型电火花线切割机床为实验设备, 分别进行单工位加工实验与双工位加工实验, 其中双工位加工实验分为不同型号和同型号连杆裂解槽双工位加工实验。实验证明: 单工位加工时实验样品槽深H随运丝频率的增大呈现先减少后增大, 槽宽W受脉冲周期影响显著; 同型号双工位加工时实验样品裂解槽槽深H受电源电压影响显著, 左工位实验样品裂解槽槽宽W在脉宽30 ~40 μs变化明显, 右工位实验样品槽宽W随电压上升而增大。大部分实验组均能在20 s内达到连杆裂解槽加工要求, 具有良好的应用前景。
- 免穿丝型电火花线切割机床 /
- 连杆大头孔内表面双侧裂解槽 /
- 槽深 /
- 槽宽
Abstract: For studying Wire-free WEDM machine tool processing the inner surface cracking groove in the double sides of the connecting rod quality and efficiency, the new Wire-free WEDM machine tool is used as the experimental equipment, which carries out the single-station processing and double-station processing experiment, among the double-station processing experiment is divided into the different types and the same type of connecting rod cracking groove double-station processing experiment. The single-station processing experiments have proved that the experimental sample groove depth H decreases firstly and then increases by the wire moving frequency increasing in the single-station processing, and the groove width W is increased by the pulse period; the same type of double-station processing proves that the groove depth H is significantly affected by the power supply voltage. The width W of the cracking groove of the left station experimental sample changes from 30 to 40 μs, and the groove width W of the right station experimental sample increases with the increasing of voltage. All experimental groups can meet the preparation requirements of connecting rod cracking groove by 20 s, and it have good an application prospective.
- wire-free WEDM machine tool /
- inner surface cracking groove in double sides of the connecting rod /
- groove depth /
- groove width

HTML全文

图 1 两种不同加工方式的连杆裂解槽形貌

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图 2 连杆大头孔内表面双侧裂解槽实际加工效果

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图 3 前代机床

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图 4 双工位倒立式连杆裂解槽电火花线切割机床

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图 5 机床切割加工连杆裂解槽过程

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图 6 实验样品槽深H与槽宽W的变化

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图 7 双工位实验样品初始位置

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图 8 双路分时脉冲输出电源输出波形

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图 9 两个工位实验样品裂解槽槽深H变化图

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图 10 两个工位实验样品裂解槽槽宽W变化图

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图 11 两个工位实验样品裂解槽形貌

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表 1 实验条件

名称	参数	备注
电极丝	0.18 mm	加工条件
工作液	佳润JR3A冷却液
实验样品	45#钢条200 mm×25 mm×10 mm	实验材料
电源电压	0~120 V
脉宽	0~50 μs
加工时间	20 s
检测设备	激光共聚焦显微镜	测试条件

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表 2 实验因素水平表

因素水平	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs
1	90	20	20	100
2	100	25	30	110
3	110	30	40	120

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表 3 单工位加工实验

序号	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs	槽深H/mm	槽宽W/mm
1	90	20	20	100	0.376/0.427/0.447	0.190/0.257/0.200
2	90	25	30	110	0.377/0.370/0.414	0.213/0.213/0.203
3	90	30	40	120	0.428/0.383/0.400	0.253/0.247/0.210
4	100	20	30	120	0.515/0.420/0.510	0.227/0.217/0.213
5	100	25	40	100	0.455/0.440/0.468	0.213/0.220/0.210
6	100	30	20	110	0.503/0.480/0.485	0.210/0.243/0.237
7	110	20	40	110	0.559/0.541/0.585	0.240/0.243/0.227
8	110	25	20	120	0.365/0.353/0.361	0.257/0.217/0.253
9	110	30	30	100	0.505/0.461/0.509	0.220/0.230/0.190

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表 4 实验样品槽深H极差分析表

因素水平	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs
1	0.403	0.487	0.422	0.454
2	0.475	0.400	0.454	0.479
3	0.471	0.462	0.473	0.415
极差值	0.072	0.087	0.051	0.064
显著度排序	2	1	4	3

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表 5 实验样品槽宽W极差分析表

因素水平	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs
1	0.221	0.224	0.230	0.214
2	0.221	0.222	0.214	0.225
3	0.231	0.227	0.230	0.233
极差值	0.010	0.005	0.016	0.019
显著度排序	3	4	2	1

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表 6 同型号连杆裂解槽双工位加工实验

序号	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs	左工位平均值		右工位平均值
序号	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs	槽深H/mm	槽宽W/mm	槽深H/mm	槽宽W/mm
1	90	20	20	100	0.346	0.210	0.371	0.208
2	90	25	30	110	0.333	0.212	0.334	0.213
3	90	30	40	120	0.371	0.227	0.346	0.206
4	100	20	30	120	0.418	0.212	0.455	0.211
5	100	25	40	100	0.508	0.223	0.504	0.207
6	100	30	20	110	0.433	0.217	0.450	0.224
7	110	20	40	110	0.540	0.229	0.544	0.225
8	110	25	20	120	0.418	0.219	0.460	0.223
9	110	30	30	100	0.526	0.223	0.539	0.221

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表 7 左工位实验样品裂解槽槽深H极差分析表

因素水平	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs
1	0.350	0.453	0.399	0.460
2	0.453	0.420	0.426	0.435
3	0.495	0.443	0.473	0.402
极差值	0.145	0.024	0.074	0.057
显著度排序	1	4	2	3

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表 8 右工位实验样品裂解槽槽深H极差分析表

因素水平	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs
1	0.350	0.460	0.427	0.471
2	0.470	0.432	0.443	0.443
3	0.514	0.445	0.465	0.420
极差值	0.164	0.025	0.038	0.051
显著度排序	1	4	3	2

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表 9 左工位实验样品裂解槽槽宽W极差分析表

因素水平	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs
1	0.216	0.217	0.215	0.218
2	0.217	0.218	0.215	0.219
3	0.224	0.222	0.226	0.219
极差值	0.008	0.005	0.011	0.008
显著度排序	2	3	1	4

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表 10 右工位实验样品裂解槽槽宽W极差分析表

因素水平	电压/V	运丝频率/Hz	脉宽/μs	脉冲周期/μs
1	0.209	0.215	0.219	0.212
2	0.214	0.214	0.215	0.221
3	0.223	0.217	0.212	0.213
极差值	0.014	0003	0.006	0.009
显著度排序	1	4	3	2

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