FCGear: Ingranaggio di distribuzione

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This page is a translated version of the page FCGear TimingGear and the translation is 9% complete.
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Ingranaggio di distribuzione

Posizione nel menu
FCGear → Create a Timing gear
Ambiente
FCGear
Avvio veloce
None
Introdotto nella versione
v0.16
Vedere anche
Nessuno

Description

Descrizione

Lo scopo degli ingranaggi di distribuzione è quello di consentire all'albero a camme e all'albero motore di far ruotare la catena di distribuzione. L'albero motore gira per muovere i pistoni su e giù all'interno dei cilindri. L'albero a camme ruota per consentire l'apertura e la chiusura delle valvole di aspirazione e di scarico sui cilindri. Questi componenti sono importanti per la corretta sincronizzazione del motore.

Gli ingranaggi di distribuzione sono collegati a una cinghia o catena di distribuzione.

Above: Timing gear

Usage

  1. Switch to the FCGear Workbench.
  2. There are several ways to invoke the command:
    • Press the Timing Gear button in the toolbar.
    • Select the Gear → Timing Gear option from the menu.
  3. Change the gear parameter to the required conditions (see Properties).

Properties

An FCGear TimingGear object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:

Data

base

  • Datiheight (Length): Default is 5 mm. Value of the gear width.
  • Datiteeth (Integer): Default is 15. Number of teeth.
  • Datitype (Enumeration): Default is gt2. Type of timing gear – profile pitch for timing belts (see Notes).

computed

  • Datih (Length): (read-only) Radial height of teeth.
  • Datioffset (Length): (read-only) X-Offset of second arc mid-point.
  • Datipitch (Length): (read-only) Pitch of gear.
  • Datir0 (Length): (read-only) Radius of first arc.
  • Datir1 (Length): (read-only) Radius of second arc.
  • Datirs (Length): (read-only) Radius of third arc.
  • Datiu (Length): (read-only) Radial difference between pitch … diameter and head of gear.

version

  • Dativersion (String):

Notes

  • type: The pitch of the timing belts (distance from tooth centre to tooth centre of consecutive teeth) is specified in types. GT2 has a pitch of 2 mm, GT3 of 3 mm, GT5 of 5 mm etc..

Useful formulas

  • addendum diameter = pitch diameter + 2 * module
  • belt length = 2 * axle base + belt tooth pitch : 2 * (teeth 1 + 2) + belt tooth pitch² : 4 * pi² * axle base * (teeth 1 - 2)²
  • axle base = belt length : 4 - belt tooth pitch : 8 * (teeth 1+2) + ¼ * sqrt [belt length - ½ * belt tooth pitch * (teeth 1+2)² - 2 * belt tooth pitch² * (teeth 1+2)² : pi²]