Kodi mungayang'ane bwanji kulunjika kwa granite straightedge?

1. Kulunjika kwa mbali ya m'mphepete molunjika motsutsana ndi malo ogwirira ntchito: Ikani m'mphepete molunjika wa granite pa mbale yosalala. Dutsani choyezera chozungulira, chokhala ndi sikelo ya 0.001mm, kudzera mu bar yozungulira yokhazikika ndikuchiyika pa sikweya yokhazikika. Kenako, mofananamo, ikani choyezera chozungulira kumbali imodzi ya m'mphepete molunjika. Kuwerengera kwa choyezera chozungulira ndi cholakwika cha perpendicularity cha mbali imeneyo. Mofananamo, yesani cholakwika cha perpendicularity cha mbali inayo, ndipo tengani cholakwika chachikulu.

2. Chiŵerengero cha Malo Olumikizirana a Parallel Straightedge: Ikani chowonetsera pamalo ogwirira ntchito a straightedge yomwe ikuyezedwa. Pukutani pamwamba pa mbale yachitsulo yopangidwa ndi chitsulo kapena straightedge yolondola mofanana kuti muwulule malo olumikizirana osiyana pamalo ogwirira ntchito. Kenako, ikani pepala lowonekera (monga pepala la plexiglass) lokhala ndi masikweya ang'onoang'ono 200 a 2.5mm x 2.5mm, olemera 50mm x 25mm, pamalo aliwonse pamalo ogwirira ntchito a straightedge yomwe ikuyezedwa. Yang'anirani chiŵerengero cha dera la sikweya iliyonse yokhala ndi malo olumikizirana (mu mayunitsi a 1/10). Werengani chiwerengero cha ma ratios omwe ali pamwambapa ndikugawa ndi 2 kuti mupeze chiŵerengero cha dera la straightedge yomwe ikuyezedwa.

Chachitatu, thandizani wolamulira wofanana ndi mabuloko ofanana kutalika kwake pa zizindikiro zokhazikika za 2L/9 kuchokera kumapeto onse a wolamulira. Sankhani mlatho woyenera woyesera kutengera kutalika kwa malo ogwirira ntchito a wolamulira (nthawi zambiri masitepe 8 mpaka 10, okhala ndi kutalika pakati pa 50 ndi 500mm). Kenako, ikani mlatho kumapeto ena a wolamulira ndikumangirira chowunikira kapena mulingo wake. Sungani mlatho pang'onopang'ono kuchokera kumapeto kwa rula kupita ku lina, kusuntha mtunda uliwonse kuchokera ku autocollimator yokhala ndi graduation ya 1″ (kapena 0.005mm/m) kapena mulingo wamagetsi wokhala ndi graduation ya 0.001mm/m (pa kutalika kwa malo ogwirira ntchito kopitilira 500mm, rula wa Class 1 wokhala ndi graduation ya 0. Kuwerenga pamalo awa kungatengedwe ndi mulingo wofanana wa 0.01mm/m (mulingo wa chimango wokhala ndi graduation ya 0.02mm/m ungagwiritsidwe ntchito pa mulingo wachiwiri). Kusiyana pakati pa kuwerenga kwakukulu ndi kochepa ndi cholakwika cha kulunjika kwa malo ogwirira ntchito a mulingo. Pa 200mm iliyonse ya malo ogwirira ntchito, cholakwika cha kulunjika chingapezeke pogwiritsa ntchito mbale ya mlatho ya 50mm kapena 100mm, pogwiritsa ntchito njira yomwe ili pamwambapa.

IV. Kufanana kwa malo ogwirira ntchito apamwamba ndi otsika, komanso malo ogwirira ntchito ndi malo ochirikiza otsika, a mulingo wofanana. Ngati palibe mbale yoyenera yathyathyathya, mbali ya mulingo ikhoza kuyikidwa pamalo othandizira ndi kusiyana kwa kutalika kwa mulingo woyesedwa pogwiritsa ntchito micrometer ya lever yokhala ndi graduation ya 0.002mm kapena micrometer yokhala ndi graduation ya 0.002mm.