Chii chinonzi sheet metal bending parts?
Mashizha esimbi ekubhenda zvikamu anoshandiswa zvakanyanya muzvikamu zvakasiyana-siyana zvekugadzira, semagetsi nemagetsi akavharirwa, marashi, magonhi, fenicha, mabhureki, matanda, mafuremu, uye zvinotsigira. Sheet metal bending inzira yekutsveyamisa chinhu kuita akonalar shape nekuisa simba pane workpiece. Kune nzira dzakasiyana dzekupeta simbi, senge press brake bending, roll bending, uye kudhirowa kwakadzika. Imwe neimwe nzira ine zvayakanakira nezvayakaipira, zvinoenderana nerudzi rwebend, zvinhu, uye huwandu hwekugadzira.
Zvimwe zvezvinhu zvinokanganisa kunaka uye kurongeka kweshizha simbi yekubhenda zvikamu isimba rekukotama, hupamhi hwekufa, mvumo yekubhenda, k factor, uye springback. Izvi zvinhu zvinoenderana nehunhu hwezvinhu, ukobvu, bend radius, uye bend angle ye w ork piece. Mainjiniya nevagadziri vanofanirwa kufunga nezvezvinhu izvi kana vachigadzira simbi inokotama zvikamu zvemishini-yakakosha maapplication.
Nzira yekusarudza zvinhu zvekunyatsokotamisa simbi?
Pane zvinhu zvakati wandei zvekufunga nezvazvo kana uchisarudza zvinhu zvekunyatso bhenda simbi, senge simba rezvinhu, corrosion resistance, uremu, kupedza sarudzo, uye processability. Heano mamwe matipi ekukubatsira iwe kusarudza iyo yakakodzera zvinhu zvepurojekiti yako:
●Sarudza chinhu chisingadi kupera, chakadai sesimbi isina tsvina, aruminiyamu, kana mhangura, kuti uchengetedze nguva uye mutengo.
●Sarudza simbi isina tsvina kana nhengo dzako dzichida welding, sezvo iine simba rakawanda, kusimba, uye kuramba kupisa uye ngura.
● Sarudza geji chaiyo, kana ukobvu, hwezvinhu, zvichienderana nebhend radius uye kona. Zvinhu zvakatetepa zviri nyore kukotama, asi zvingave zvisina kukodzera kune-high-stress applications.
● Sarudza chinhu chine good processability, kana kugona kuumbwa pasina kutsemuka, kubvaruka, kana kuputika. Zvimwe zvinhu, senge high-carbon steel, titanium, kana magnesium, zvingada maturusi akakosha kana marapirwo kuti apinde.
Nekutevera matipi aya, unogona kuve nechokwadi chekuti sarudzo yako yezvinhu inosangana nekuita, kugona, uye mutengo-unoshanda maitiro eiyo chaiyo simbi yekubhenda chirongwa.
Chii chinonzi sheet metal bend allowance?
Sheet metal bend allowance ndiyo chiyero chekuwedzera zvinhu zvinodikanwa pakupeta chikamu chesimbi. Ndiwo mutsauko uripo pakati pehuwandu hwemativi maviri ekunze ekubhenda uye kureba kwakafuratira kwepepa resimbi1. Iyo bend allowance inoenderana nekukora kwezvinhu, bend angle, mukati bend radius, uye k-factor yechinhu2. Iyo k-factor inogara inomiririra chinzvimbo cheyairerekera axis mubhendi, uko zvinhu zvacho hazvitambanuke kana kumanikidza1. Iyo bend allowance inogona kuverengerwa uchishandisa inotevera formula:
BA=fracthetacdotpi180cdot(r+KcdotT)
kupi:
BA ndiyo inobvumirwa bend mumamita;
theta ndiyo kona yekubhenda mumadhigirii;
pi is the mathematical constant, inenge yakaenzana ne3.14;
r ndiyo yemukati bend radius mumamita;
K ndiyo k-factor yezvinhu;
T ndiko ukobvu hwezvinhu mumamita.
Mari yekubhenda inobatsira mainjiniya nevagadziri kuti vaone kureba chaiko kwerata risati rapeta, kuitira kuti chinogadzirwa chienderane nezvinodiwa.
Ndeapi masimbi anogona kukotama zvakanaka?
Mamwe simbi anokwanisa kukotama zvakanaka igoridhe, sirivheri, simbi, mhangura, nealuminium1. Masimbi aya ane malleability akanyanya, zvinoreva kuti anokotama zviri nyore asingatyoke kana kutsemuka. Kusagadzikana kunoenderana neatomu chimiro chesimbi, pamwe nekupisa uye kumanikidza kunoshandiswa pairi. Simbi dzakachena dzinogadzika kupfuura simbi dzealloy, dziri musanganiswa wesimbi dzakasiyana. Kupeta simbi kunodawo kufunga nezvezvinhu zvakaita sehukobvu hwezvinhu, bend angle, bend radius, uye bend allowance. Zvinhu izvi zvinokanganisa simba rekukotama, kurongeka, uye kunaka kwekubhenda.
