en

centre hole

1

Terminological databases

Masinate terminibaas

ID 1130739 Last modified 16.01.2025
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Domain Mechanical Engineering
machining centre
centre hole preferred
  • standardiseeritud teljesihiline kooniline (võib olla ka kõverpindne) süvend, mida tehakse detaili otstes, tsentris, mida kasutatakse tooriku kohtkindlaks paigalduseks tööpingis (tavaliselt treipingis)
  • hole that serve as a reference point for work holding tools, which helps support and stabilise the workpiece in a lathe, establish a starting point for larger holes, reducing the risk of the drill bit wandering and preventing deflection
Good to know
  • A – tüüpi tsentriavasid kasutatakse siis, kui pärast tooriku treimist vajadus tsentriava järele puudub. B - tüüpi tsentriavasid kasutatakse ka tooriku edasisel töötlemisel. R - tüüpi tsentriavasid kasutatakse täpsete detailide töötlemisel. Selliste tsentriavade korral on tooriku ja tsentri pinnad kindlas ringkontaktis ka teatud nurgaasetuse puhul.
tsentriava
Usage examples
  • ISO 6411 – A4/8.5: Tsentriava ISO 6411: tsentriava võlli otsas on kohustuslik. Tsentriava kuju ja mõõtmed on vastavuses DIN 332: Kuju A; d1 = 4 mm; d2 = 8.5 mm.
machining centre
Usage examples
  • Machining centre is an accurately drilled hole with a good finish at each end of the component which enables the work to be located during a machining operation on a lathe
centre hole preferred
Usage examples
  • This International Standard specifies the simplified representation of centre holes and their designation. Simplified representation of centre holes may be used particularly when it is not necessary to show the exact form and size and where the designation of standardized centre holes is sufficient for information.

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