云南快乐十分走势图

电子加工全自动贴合组装设计参考

云南快乐十分走势图RIQI:2018-05-27 / RENQI: / LAIYUAN:aolongjixie.com

光学定位符号

XIANDAIHANGAOYINSHUAJI、TIEPIANJI,PCBDEDINGWEIDUOSHUCAIYONGGUANGXUEDINGWEIJISHU(TUXINGSHIBIE),YINCI,XUYAOZAIPCBSHANGSHEJIGUANGXUEDINGWEIFUHAO。YIBANQINGKUANGXIA,ZAIYIKUAIPCBSHANGXUYAOSHEJI3GEYISHANGDEGUANGXUEDINGWEIFUHAO,YIBIANSHIXIANZHENGBAN、YUANJIANJIDEDINGWEI。

云南快乐十分走势图 GUANGXUEDINGWEIFUHAO,KEYISHEJICHENGFANGXING、YUANXING、SANJIAOXING、SHIZIXINGDENGDUOZHONGTUXING,DUIYIGEGONGSILAIJIANGYINGMINGQUEYIZHONG,YIBIANJIANSHAOZHUANXIANSHIBIANCHENGDEGONGZUOLIANG(ZHEIYESHITONGYONGBIAOZHUNYUQIYEBIAOZHUNDECHABIE)。

RUGUOSHEBEIMEIYOUTESHUYAOQIU,JIANYISHEJICHENGZHIJINGWEI1mmDEYUANXINGFUTONGBOFUSHITUXING。KAOLVDAOCAILIAOYANSEYUHUANJINGDEFANCHA,YIBANLIUCHUBIFUHAODA1mmDEWUZUHANQU。RUGUOGUANGXUEDINGWEIFUHAOZHOUWEIWUTONGBOFENBU,HAIYINGSHEJIYIGEBAOHUQUAN。

定为孔

一般情况下,在PCB的角部位置还应该设计三个定位孔,以便在线测试和PCB加工时进行定位。一般将基准孔设计成圆孔,而将其他孔设计成长孔(导向)。对一些高密度的小尺寸板,如手机板,如果PCB组装后不需要在线测试,也没有地方设计定位孔,可以不设计。
定位孔

DINGWEIKONGCHICUNYINGFUHESHENGCHANXIANDEYAOQIU,DINGWEIKONGDEZHONGXINYINGWEIYULIBIAN5mmDEJIAOBU。

传送边

PCBZAISMTSHENGCHANXIANSHANGSHIKAODAOGUICHUANSONGDE,YINCI,BIXULIUCHUYIDUIJINBUYUANJIAN、KUANDU≥5mmDEBIANZUOWEICHUANSONGBIAN。TONGCHANGJIANGPCBHUOPINBANHOUDABANDELIANGTIAOZHANGBIANZUOWEIQICHUANSONGBIAN。

挡条安装边

DUIXUYAOJINXINGBOFENGHAN、KUANDUCHAOGUO120mmDEBAN,YIBANYUCHUANSONGBIANCHUIZHIDELIANGTIAOFEICHUANSONGBIANYEYINGGAILIUCHU≥5mmKUANDUDEBIAN,YIBIANANZHUANGFANGHUDANGTIAO,FANGZHIBOFENGHANSHIRONGRONGHANLIAOLIUDAOPCBDEYUANJIANMIAN。

PCB尺寸

PCBDECHICUNSHIYOUCHANPINDESHEJIJUEDINGDE,DANWEILECHONGFENLIYONGSHEBEIDENENGLIHEBAOCHISHENGCHANXIANGESHEBEINENGLIDEPINGHENG,DUIXIAOCHICUNDEPCB,YIBANYAOTONGGUOPINBANDEFANGSHI,SHIZHIZHUANHUANWEIFUHEGONGXUCHANNENGJUNHENGYAOQIUDELIXIANGCHICUN,YIBIANTIEZHUANG、CHAJIANHEHANJIE。DUODACHICUNBIJIAOHESHI,QUJUEYUSHEBEINENGLI,TONGSHIBIXUMANZUYUANJIANZHONGLEISHUXIAOYUTIEPIANJILIAOWEISHUDEYAOQIU,RUMOUXINGHAODEQUANZIDONGTIEPIANJINENGGOUWANCHENGDEZUIDAPCBCHICUNWEI460mm×460mm,ZUIDUOKETIE80ZHONG8mmDAISHIBAOZHUANGDEYUANJIAN。

PCB外形

PCBWAIXINGYESHIYOUCHANPINSHEJIJUEDINGDE,YOUGEZHONGXINGZHUANG(RUYUANDE、BUGUIZEDE),DANZIDONGHUADESHENGCHANSHEBEIDUIWAIXINGQUEYOUYIDINGDEYAOQIU。SUIRANBUNENGYAOQIUGAIBIANPCBDEWAIXING,DANKEYITONGGUOPINBANDENGGONGYIFANGFASHIZHIZHUANHUAWEIFUHESHENGCHANSHEBEIYAOQIUDEXINGZHUANG。

云南快乐十分走势图 DUIHUNZHUANGSMTBAN,QIWAIXINGYINGSHEJICHENGJUXINGQIESIJIAOWEIYUANXING(YOUYUBOFENGHANJIEJISHIYONGLIANZHUACHUANSONGPCB,YINCI,JIAOBUJUEBUNENGYOUQUEKOU)。RUGUOBUSHIZHEIZHONGXINGZHUANG,CHUANSONGGUOCHENGZHONGCHANGCHANGHUIYINQIPCBCHUANSONGBUWEN(SHENZHIKABAN)、CHAJIANSHIFANBANHEBOFENGHANSHIRONGRONGHANLIAOJIQIDENGWENTI。

云南快乐十分走势图 DUIQUANTIEZHUANGBAN,YIBANYUNXUYOUQUEKOU,DANQUEKOUDEZONGZHANGDUBUYINGDAYUSUOZAIBIANZHANGDUDE1/3,YISHIPCBZAILIANTIAOSHANGCHUANSONGPINGWEN。

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GONGSICHANPINHANGAIGONGYESHENGCHANSHEBEIKONGZHISHEBEIDIANZIKAIFA、QICHEMCUDIANZIKONGZHIXITONGFANGANSHEJI、SIFUKONGZHIBANPCBAJIAGONG、SHUKONGJICHUANGZHUBANPCBAJIAGONG,ZHINENGJIAJUDIANZIYANFA、3DDAYINJIKONGZHIBANPCBAJIAGONGDENGLINGYU。YEWULIUCHENGBAOKUODIANZIFANGANKAIFASHEJI、PCBSHENGCHAN、YUANQIJIANCAIGOU、SMTTIEPIANJIAGONG、YANGJIZHIZUODIAOSHI、PCBAZHONGXIAOPILIANGJIAGONGSHENGCHAN、HOUQIZHIBAOWEIHUYIZHANSHIPCBAJIAGONGFUWU。

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作者:PCBA加工


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云南快乐十分走势图