Article(id=1195319922436903075, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195319920000012443, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20240165, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1762916077479, onlineDateStr=2025-11-12, pubDate=1739980800000, pubDateStr=2025-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762916077479, onlineIssueDateStr=2025-11-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762916077479, creator=13701087609, updateTime=1762916077479, updator=13701087609, issue=Issue{id=1195319920000012443, tenantId=1146029695717560320, journalId=1189873562199433220, year='2025', volume='', issue='2', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762916076894, creator=13701087609, updateTime=1762916415896, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1195321341915205752, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195319920000012443, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1195321341915205753, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195319920000012443, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=29, endPage=33, ext={EN=ArticleExt(id=1195319922663395492, articleId=1195319922436903075, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Analysis of Thread Connection Assembly Curve Alarm for Aluminum Alloy Bushing, columnId=1190284220686766583, journalTitle=Automobile Technology & Material, columnName=Original article, runingTitle=null, highlight=null, articleAbstract=
Regarding the issue of the assembly torque of the aluminum alloy bushing of the subframe and the connecting bolts to the body of a certain model exceeding the upper limit of the monitoring window and triggering an alarm, through the analysis of the bolt assembly curve, it is found that the reason for alarm is that when the assembly torque reaches the upper limit of the monitoring window, the bolt tightening has not reached the process angle yet (this position is assembled by using the torque angle method). The comparison results between the bolt states of normal assembly and alarm show that the anti-slip teeth under the bolt head of assembly alarm is embedded in the gasket, while the anti-slip teeth of the gasket of the normal assembly bolt is embedded in the aluminum alloy bushing. The anti-slip teeth embedded in the gasket under the bolt head of the assembly alarm will drive the gasket to rotate, resulting in an increase in the friction diameter, friction coefficient of the bolt head, and assembly torque, thereby causing the assembly curve alarm. The embedding of anti-slip teeth under the bolt head into the gasket is due to insufficient heat treatment of the gasket, resulting in a softer hardness that is lower than the design required value.
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针对某车型副车架铝合金衬套与车身连接螺栓装配扭矩超过监控窗口上限报警的问题,通过对螺栓装配曲线进行分析,发现报警的原因为装配扭矩达到监控窗口上限时,螺栓拧紧还未达到工艺角度(该位置为扭矩-转角法装配)。装配正常和报警的螺栓状态对比结果表明:装配报警的螺栓头下防滑齿嵌入垫片,装配正常螺栓的垫片防滑齿嵌入铝合金衬套;螺栓头下防滑齿嵌入垫片会带动垫片发生跟转,导致螺栓头部摩擦直径、摩擦因数和装配扭矩增大,进而导致装配曲线报警;螺栓头下防滑齿嵌入垫片的原因是垫片热处理不充分,硬度低于设计要求值。
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张少甫(1992—),男,工程师,硕士学位,主要研究方向为汽车零部件失效分析。
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张少甫(1992—),男,工程师,硕士学位,主要研究方向为汽车零部件失效分析。
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垫片的压痕和磨痕, figureFileSmall=nknjJzwELzPksbE1MvUpfA==, figureFileBig=xiLiB60v++Ip07XL8Ux0vg==, tableContent=null), ArticleFig(id=1195335702096425600, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319922436903075, language=EN, label=null, caption=null, figureFileSmall=mWmRWKLYT+XdF+oKLJJqyA==, figureFileBig=uvWpv+xghCqlkItsKzuRXw==, tableContent=null), ArticleFig(id=1195335702155145857, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319922436903075, language=CN, label=图4, caption=
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螺栓、垫片和副车架铝衬套连接示意, figureFileSmall=CHntNbNJyPXvPGc4WoX+Yg==, figureFileBig=ZLvbwni+VpCGdg8jkK4lYg==, tableContent=null), ArticleFig(id=1195335702369055364, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319922436903075, language=EN, label=null, caption=null, figureFileSmall=Yu/MyeQQwnVtru+N6COwig==, figureFileBig=wvQ/XES//1wBHoZszemiJw==, tableContent=null), ArticleFig(id=1195335702427775621, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319922436903075, language=CN, label=图6, caption=
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问题分析导图, figureFileSmall=WQtVwAn0w8rPAt8NxIMziA==, figureFileBig=Dy6SoNcYc/B6JKuEgBybvg==, tableContent=null), ArticleFig(id=1195335702624907912, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1195319922436903075, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
零件 状态 | 总扭矩 /N·m | 夹紧力 /kN | 螺距 /mm | 螺纹 中径 /mm | 有效支撑面摩擦直径 /mm | 总摩擦 因数 |
装配 不合格 | 480 | 100~125 | 1.5 | 13.026 | 29 | 0.17~0.21 |
装配 合格 | 244 | 100~125 | 1.5 | 13.026 | 22 | 0.09~0.12 |
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摩擦因数评估
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零件 状态 | 总扭矩 /N·m | 夹紧力 /kN | 螺距 /mm | 螺纹 中径 /mm | 有效支撑面摩擦直径 /mm | 总摩擦 因数 |
装配 不合格 | 480 | 100~125 | 1.5 | 13.026 | 29 | 0.17~0.21 |
装配 合格 | 244 | 100~125 | 1.5 | 13.026 | 22 | 0.09~0.12 |
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| 零件状态 | 标准值 | 实测值 | 评价 |
| 内圈 | 外圈 |
| 装配合格螺栓 | 0.12~0.18 | 0.13~0.16 | 0.11~0.16 | 不合格 |
| 装配报警螺栓 | 0.12~0.18 | 0.12~0.17 | 0.10~0.15 | 不合格 |
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螺栓垫片防滑齿高度测试结果 mm
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| 零件状态 | 标准值 | 实测值 | 评价 |
| 内圈 | 外圈 |
| 装配合格螺栓 | 0.12~0.18 | 0.13~0.16 | 0.11~0.16 | 不合格 |
| 装配报警螺栓 | 0.12~0.18 | 0.12~0.17 | 0.10~0.15 | 不合格 |
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| 零件 | 标准值 | 测试值 | 评价 |
| 铝合金衬套 | ≥80 HB | 85~88 HB | 合格 |
| 垫片 | 300~370 HV10 | 335~343 HV10 (正常曲线) | 合格 |
170~195 HV10 (报警曲线) | 不合格 |
| 螺栓 | 320~370 HV10 | 358~362 HV10 | 合格 |
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零件硬度测试结果
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| 零件 | 标准值 | 测试值 | 评价 |
| 铝合金衬套 | ≥80 HB | 85~88 HB | 合格 |
| 垫片 | 300~370 HV10 | 335~343 HV10 (正常曲线) | 合格 |
170~195 HV10 (报警曲线) | 不合格 |
| 螺栓 | 320~370 HV10 | 358~362 HV10 | 合格 |
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垫片硬度 /HV10 | 拧紧工艺 | 拧紧扭矩/N·m | 残余扭矩 /N·m | 衰减比例/% |
| 170 | 150 N·m+180° | 381 | 350 | 8.2 |
| 167 | 488 | 425 | 12.9 |
| 174 | 387 | 359 | 7.3 |
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装配参数
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垫片硬度 /HV10 | 拧紧工艺 | 拧紧扭矩/N·m | 残余扭矩 /N·m | 衰减比例/% |
| 170 | 150 N·m+180° | 381 | 350 | 8.2 |
| 167 | 488 | 425 | 12.9 |
| 174 | 387 | 359 | 7.3 |
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