【《笔记本产品生产线标准工时测定案例分析概述》2900字】

笔记本产品生产线标准工时测定案例分析概述本文以实际出发，考虑到实际操作的可行性和数据测定的准确性，采用秒表时间研究法对生产现场的作业单元进行时间测定。1.1J223生产线标准作业时间本文运用秒表测时法对作业单元进行时间观测，根据现场产线组长的经验，对每个工位进行15次的观测统计，并采用三倍标准差的方法对异常数值进行去除，求出平均值作为作业单元的正常观测时间。表3-5J223生产线各作业单元时间观测统计Tab3-5TimeobservationandstatisticsofeachoperationunitofJ223productionline单元观测时间（s）1234567891011121314151899810910998109108921011121013101412101310141011113101210131181112101311811121248881010910810109108810514131614161314131614161314161461415121214151211121412141515137212222212222212221222221212222814141312121413131412121314121291416171616161514161414151514161091011101091010910910111010112120211919201821202221202219181210111010911101010911101011101310121210131112121112111212111314101291091010119109101191015141215141312141215141312121514162323222123212224232422212322241713121111121112121111121112131218121211111011121211111011121110191312131312111212131312111213122014121412111213121412111213141221161416141616151613161616131617221513141413131413141413131415132310910101011101010111010910102477810778787710877251213131415131212131314151312122614121311141214121311141211141227101311101011101011101111101011281415151314141415151314141515132991110101110109101011101010113012131312111212131312111212131331101112111110101110111112101011321517161514161714151716151416173310131011101113111011101110101134111213131111121313111112121113351012111111101112111110111011113699101111910101111910910113716161515151616151415161616151438111212131211121311121112121211391212131413121213141312121213124010111091110101011111010111094191091011912910111210109104211111213111212121311121211121343141415151415171515171515141515441011101212111210111311121110114518181919192019191919201918191946131211121113111112111211121112471718171819171818191718171819174810991091191091099109104912131412131213141312131314131250121112141312111314111312111113对50个作业单元的观测时间进行异常值检验，如表3-6所示：表3-6异常值检验Tab3-6Testofoutliers序号单元名称xxx最大值最小值范围1检查Top9.011.16.910822复检良品放回流水线11.415.56.9141043检查KB良品放Top旁10.915.46.413854锁KB螺丝9.012.06.010825复查螺丝并贴保护膜到KB14.418.010.8161336铆铆钉固定KB到Top13.317.29.4151147贴背光纸到Top21.623.120.1222118组装MIC到Top13.015.410.6141229锁付kidPlate15.218.212.21714310贴ESC贴片10.011.88.2119211组装定位X38321.125.916.32218412压合TouchFlex10.111.98.3119213贴DB贴片11.614.38.91310314锁螺丝10.012.17.9129315贴TouchTape13.417.69.21512316组装电池22.525.519.52421317锁电池螺丝11.713.89.61311218插TPFlex11.113.29.01210219装TP/Cover到Top12.314.410.21311220装MLB到Top12.515.59.51411321预锁Mesa15.318.911.71713322锁左风扇两颗螺丝13.715.811.61513223锁右风扇两颗螺丝10.011.58.5119224插MesaFlex7.710.74.7107325锁Tcon13.016.010.01512326LCDModule12.615.99.31411327锁螺丝固定Tcon到Top10.613.08.21310328组装Base14.216.611.81513229检查KB10.013.07.0119230检查Glass12.314.410.21311231检查自动弹开10.712.88.61210232检查Base15.618.612.61714333检查Housing10.813.87.81310334检测脚垫平行12.014.79.31311235检查LCD10.912.79.11210236检查Top10.012.47.6119237镭雕15.317.413.21614238全检11.813.99.71311239贴Label12.614.710.51312140包OPP保护膜10.212.38.1119241放置彩箱10.013.07.0129342包AD保护膜11.914.09.81311243理料15.017.712.31714344合彩箱11.013.18.91310345套热缩袋19.020.817.22018246切边11.713.89.61311247切角17.819.915.71917248烘枪9.511.37.7119249装箱13.015.110.91412250封箱12.215.29.214113结合表3-5与3-6的计算结果进行对比，发现所有测得的数据都是合理的，不存在异常值。结合员工装配工作的难易程度、本次测定的工人多数得到各单元标准作业时间如表3-7所示，其中表3-7改善前J223各单元标准作业时间Tab3-7ToimprovethestandardoperatingtimeofeachunitbeforeJ223序号作业单元名称观测时间均值（s）评比指数宽放率标准工时（s）1检查Top9.0112%10.12复检良品放回流水线11.4112%12.83检查KB良品放Top旁10.9112%12.24锁KB螺丝9.0112%10.15复查螺丝并贴保护膜到KB14.4112%16.16铆铆钉固定KB到Top13.3112%14.97贴背光纸到Top21.6112%24.28组装MIC到Top13.0112%14.69锁付SkidPlate15.2112%17.010贴ESC铁片10.0112%11.211组装定位X38321.1112%23.612压合TouchFlex10.1112%11.313贴DB铁片11.6112%13.014锁螺丝10.0112%11.215贴TouchTape13.4112%15.016组装电池22.5112%25.217锁电池螺丝11.7112%13.118插TPFlex11.1112%12.419装TP/Cover到Top12.3112%13.820装MLB到Top12.5112%14.021预锁Mesa15.3112%17.122锁左风扇两颗螺丝13.7112%15.323锁右风扇两颗螺丝10.0112%11.224插MesaFlex7.7112%8.625锁Tcon13.0112%14.626锁附LCDModule12.6112%14.127锁螺丝固定Tcon到Top10.6112%11.928组装Base14.2112%15.929检查KB10.0112%11.230检查Glass12.3112%13.831检查自动弹开10.7112%12.032检查Base15.6112%17.533检查Housing10.8112%12.134检测脚垫平行12.0112%13.435检查LCD10.9112%12.236检查Top10.0112%11.237镭雕15.3112%17.138全检11.8112%13.239贴Label12.6112%14.140包OPP保护膜10.2112%11.441放置彩箱10.0112%11.242包AD保护膜11.9112%13.343理料15.0112%16.844合彩箱11.0112%12.345套热缩袋19.0112%21.346切边11.7112%13.147切角17.8112%19.948烘枪9.5112%10.649装箱13.0112%14.650封箱12.2112%13.7合计710.6根据目前收到的客户需求计划，可知客户单日最大需求节拍为20s，根据上述统计结果，将改善前J223各作业单元的作业平衡情况用柱状图来呈现，如图3-7所示：图3-7改善前各作业单元作业时间山积图Fig3-7Improvethemountainmapofoperationtimeofeachoperationunit从图3-7可清晰看到J223生产线每个作业单元的作业时间与瓶颈单元的作业时间，作业单元16组装电池标准作业时间耗时最长为25.2s，作业单元7贴背光纸到Top、作业单元11组装定位X383及作业单元45套热缩袋作业单元47切角作业时间也均超过客户节拍，这些瓶颈单元的存在影响着整条生产线的产出情况，且各个作业单元的作业时间有长有短，作业时间不均衡，将不可避免的出现空闲时间及人员的浪费，生产线不平衡问题明显，该生产线需进行改善优化。1.2J223生产线平衡指标根据现场收集到的数据，按照第二章公式2-1、2-2、2-3对其进行平衡率、损失率及平滑指数进行计算。从上述统计数据中可得到N=47，瓶颈时间，工位总时间710.6s，则生产线平衡率为：生产线平衡损失率：生产线平滑指数：根据平衡效果评价标准，平衡率在90%以上表明企业