Dusha koonka ah waxa loo isticmaalaa sidii dusha tusmaynta, kaas oo ku dhawaad beddelaya giraangiraha dhibicda ee dusha sare ee jeexan ee ka fog cunaha ee hyperbola.
Tilmaamahagears hypoid:
1. Markaad u jeeddo ilkaha giraangiraha weyn, dhig shaagagga yar si siman dhinaca midig ee giraangiraha weyn. Haddii dhidibka usheeda yar ay ka hooseyso dhidibka giraangiraha weyn, waxaa loo yaqaan 'offset downward', haddii kale waa kor u kac.
2. Marka masaafada kabaxsan ay korodho, xagasha helix ee giraangiraha yar ayaa sidoo kale kor u kaca, dhexroorka dibadda ee giraangiraha yar yar sidoo kale wuu kordhiyaa. Sidan, qallafsanaanta iyo xoogga giraangiraha yar yar ayaa la wanaajin karaa, waxaana la dhimi karaa tirada ilkaha ee giraangiraha yar yar, waxaana la heli karaa gudbinta saamiga sare ee dhimista.
Faa'iidooyinka qalabka hypoid:
1.Waxay hoos u dhigi kartaa meesha uu ku sugan yahay gear-ga gaadhiga iyo shaft-ga gaadhiga,taasi oo hoos u dhigaysa xarunta cufisjiida jidhka iyo gaadhiga,taas oo faa’iido u leh in ay wanaajiso xasiloonida baabuurka
2. Gear-ku-soo-celinta qalabka ayaa ka dhigaysa tirada ilkaha ee qalabka wadista mid yar, laba-gees ayaa heli kara saamiga gudbinta weyn.
3. Isku-xidhka isku-dhafan eeqalabka hyperboloid meshing waa mid aad u weyn, xooggu wuu sarreeyaa marka la shaqeynayo, awoodda qaadistu waa weyn tahay, qaylada ayaa yar, gudbinta ayaa aad u deggan, adeegga adeegga ayaa dheer.
