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HELIX ANGLE [20 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-02-24

English

Subject field(s)
  • Gears and Friction Wheels
DEF

A length equal to the product of the facewidth and the tangent of the base helix angle.

OBS

overlap length: term and definition standardized by ISO.

French

Domaine(s)
  • Engrenages et roues de friction
DEF

Longueur égale au produit de la largeur de denture par la tangente de l'angle d'hélice de base.

OBS

longueur de recouvrement : terme et définition normalisés par l'ISO.

Spanish

Save record 1

Record 2 2015-03-12

English

Subject field(s)
  • Propulsion of Water-Craft
DEF

The angle between the helix of constant lead and the propeller plane, taken on the cylindrical surface.

OBS

pitch angle: term and definition standardized by ISO.

French

Domaine(s)
  • Propulsion des bateaux

Spanish

Save record 2

Record 3 2008-01-31

English

Subject field(s)
  • Pipes and Fittings
  • Plastic Materials
  • Manufactured Products (Rubber)
DEF

The acute angle between any strand of helical reinforcement and a line parallel to the axis. [Definition standardized by ISO.]

OBS

helix angle : term standardized by ISO.

French

Domaine(s)
  • Tuyauterie et raccords
  • Matières plastiques
  • Produits fabriqués (Caoutchouc)
DEF

Angle aigu formé par un brin du renforcement en hélice et une ligne parallèle à l'axe. [Définition normalisée par l'ISO.]

OBS

angle de l'hélice : terme normalisé par l'ISO.

Spanish

Save record 3

Record 4 2006-10-03

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The acute angle between the tangent to a helix and the straight generator of the cylinder on which it lies.

OBS

[The helix angle] is the complement of the lead.

OBS

helix angle : term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Angle aigu de la tangente à une hélice avec la génératrice du cylindre portant l'hélice.

OBS

angle d'hélice : terme et définition normalisés par l'ISO.

Spanish

Save record 4

Record 5 2006-10-03

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The helix angle of the base helix of an involute helical gear.

OBS

base helix angle : term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Angle d'hélice de l'hélice de base d'une roue hélicoïdale à développante.

OBS

angle d'hélice : terme et définition normalisés par l'ISO.

Spanish

Save record 5

Record 6 2006-09-27

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The acute angle between the tangent to a helix and a plane perpendicular to the axis of the cylinder on which the helix lies.

OBS

lead angle: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Angle aigu de la tangente à une hélice avec un plan de section droite du cylindre portant l'hélice.

OBS

inclinaison : terme et définition normalisés par l'ISO.

Spanish

Save record 6

Record 7 2003-05-29

English

Subject field(s)
  • Helicopters (Military)
DEF

The distance an element of the propeller would advance, in one revolution, if it were moving along a helix of slope equal to its blade angle.

OBS

geometric pitch: term officially approved by the Aeronautical Terminology Standardization Committee (ATSC) - Helicopters.

French

Domaine(s)
  • Hélicoptères (Militaire)
OBS

pas géométrique : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Hélicoptères.

Spanish

Save record 7

Record 8 2002-08-21

English

Subject field(s)
  • Descriptive Geometry
  • Gears and Friction Wheels
DEF

The lead angle of base helix.

OBS

Terminology of worm gear geometry.

OBS

base angle: term and definition standardized by ISO.

French

Domaine(s)
  • Géométrie descriptive
  • Engrenages et roues de friction
DEF

Angle d'inclinaison de l'hélice de base.

OBS

Terminologie de la géométrie des engrenages à vis.

OBS

inclinaison de base : terme et définition normalisés par l'ISO.

Spanish

Save record 8

Record 9 1992-09-23

English

Subject field(s)
  • Mathematics
DEF

... the amount by which a point on the helix is displaced, in a direction parallel to the axis, in making one revolution about the axis.

OBS

helix : A twisted curve whose tangent always makes a constant angle with a fixed line, called the axis of the helix.

French

Domaine(s)
  • Mathématiques
OBS

Un cas particulier important est celui de l'hélice circulaire, dont le cylindre (C) correspondant est un cylindre de révolution. Pour la caractériser, il faut connaître son axe et son rayon r [...], son sens d'enroulement [...] et son pas h (longueur constante qui sépare deux points d'intersection consécutifs d'une génératrice fixe, avec (H].

OBS

hélice : Courbe le plus souvent gauche, dont les tangentes font un angle constant avec une direction donnée.

Spanish

Save record 9

Record 10 1992-07-03

English

Subject field(s)
  • Industrial Tools and Equipment

French

Domaine(s)
  • Outillage industriel

Spanish

Save record 10

Record 11 1992-05-07

English

Subject field(s)
  • Gears and Friction Wheels
DEF

The surface generated by a straight line inclined at a constant angle to the axis of a cylinder of revolution("base cylinder") and rolling without slip on the surface of that cylinder(i. e. constantly tangent to a helix of the cylinder).

OBS

Term and definition standardized by ISO.

French

Domaine(s)
  • Engrenages et roues de friction
DEF

Surface engendrée par une ligne droite faisant un angle constant avec l'axe d'un cylindre de révolution ("cylindre de base") et roulant sans glisser sur la surface de ce cylindre (c'est-à-dire constamment tangente a une hélice du cylindre).

OBS

Terme et définition normalisés par l'ISO.

Spanish

Save record 11

Record 12 1992-05-07

English

Subject field(s)
  • Gears and Friction Wheels
DEF

The lead angle of the base helix of an involute helical gear.

OBS

Term and definition standardized by ISO.

French

Domaine(s)
  • Engrenages et roues de friction
DEF

Inclinaison de l'hélice de base d'une roue hélicoïdale à développante.

OBS

Terme et définition normalisés par l'ISO.

Spanish

Save record 12

Record 13 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

"screw threads" : Continuous helical ribs on a cylindrical shank.... If a single helical groove is cut or formed on a cylinder, it is called a single-thread screw. Should the helix angle be increased sufficiently for a second thread to be cut between the grooves of the first thread, a double thread will be formed on the screw. Double, triple, and even quadruple threads are used whenever a rapid advance is desired, as on fountain pens and valves. The helices on a double thread start 180 ° apart, while those on a triple begin 120 ° apart.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)

Spanish

Save record 13

Record 14 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

"screw threads" : Continuous helical ribs on a cylindrical shank.... If a single helical groove is cut or formed on a cylinder, it is called a single-thread screw. Should the helix angle be increased sufficiently for a second thread to be cut between the grooves of the first thread, a double thread will be formed on the screw. Double, triple, and even quadruple threads are used whenever a rapid advance is desired, as on fountain pens and valves. The helices on a double thread start 180° apart, while those on a triple begin 120° apart.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

À moins d'indications contraires, on considère les pièces filetées comme n'ayant qu'un seul filet. Le filet simple est formé d'une seule saillie hélicoïdale. Le pas d'un filet simple est la distance axiale entre deux filets et correspond à la distance parcourue par un écrou en un tour. Dans un filet simple, l'avance égale le pas.

Spanish

Save record 14

Record 15 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and a selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch-diameter thread in the UNC series has 20 threads/in., while in the UNF series it has 28. In the Unified and American National standards, the coarse thread series(UNC and NC) is recommended for general industrial use on threaded machine parts and for screws and bolts. Because a coarse thread has fewer threads per inch than a fine thread of the same diameter, the helix angle is greater, and the thread travels farther in one turn. A coarse thread is preferred when rapidity and ease of assembly are desired, and where strength and clamping power are not of prime importance.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
OBS

Série à filets gros : Pour pièces et équipement ordinaires dans l'industrie et le commerce.

OBS

"UNC"="Unified coarse thread" (gros pas).

Spanish

Save record 15

Record 16 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

Unified and American National screw thread standards for screws, bolts, nuts, and other threaded parts consist of six series of threads and selection of special threads that cover nonstandard combinations of diameter and pitch. In general, the unified screw threads are limited to three series : coarse(UNC), fine(UNF), and extrafine(UNEF). A 1/4-inch.-diameter thread in the UNC series has 20 threads/in., while in the UNF series it has 28. In the unified and American National standards, the coarse thread series(UNC and NC) is recommended for general industrial use on threaded machine parts and for screws and bolts. Because a coarse thread has fewer threads per inch than a fine thread of the same diameter, the helix angle is greater, and the thread travels farther in one turn. A coarse thread is preferred when rapidity and ease of assembly are desired, and where strength and clamping power are not of prime importance.

CONT

Threads are designated by standardized notes. Under the unified system, threads are specified by giving in order the nominal diameter, number of threads per inch, the initial letters such as UNC or UNF that identify the series, and class of thread (1A, 2A, and 3A or 1B, 2B and 3B). Threads are considered to be right-hand and single unless otherwise noted; therefore the specification for a left-hand thread must have the letters LH included.

CONT

[Example of a thread identification by standardized symbols]: 1/2-13UNC-2ALH.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

Norme BS 1580 : 1953 "Unified Screw Threads". Il s'agit des filetages cylindriques de mécanique générale, au profil ISO, mais avec les cotes en pouces. Depuis 1949, le Royaume-Uni, le Canada et les États-Unis se sont mis d'accord sur ces filetages et leur désignation : "UNC" pour "Unified coarse thread" (gros pas)"; "UNF" pour "Unified fine thread"(pas fin); "UNEF" pour "Unified extra-fine thread" (pas extra-fin); "UN" pour "Unified constant pitch" (pas constant). Ces filetages figurent [...] d'une manière plus complète dans la norme américaine ASA B1.1-1960 qui concerne les filetages unifiés.

Spanish

Save record 16

Record 17 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

"screw threads" : Continuous helical ribs on a cylindrical shank,... of a single helical groove is cut or formed on a cylinder, it is called a single-thread screw. Should the helix angle be increased sufficiently for a second thread to be cut between the grooves of the first thread, a double thread will be formed on the screw. Double, triple, and even quadruple threads are used whenever a rapid advance is desired, as on fountain pens and valves. The helices on a double thread start 180° apart, while those on a triple begin 120° apart.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

Un filet double est formé de deux saillies hélicoïdales amorcées à 180 ° d'intervalle dont le pas égale deux fois la distance axiale entre deux filets consécutifs.

Spanish

Save record 17

Record 18 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

"screw threads" : Continuous helical ribs on a cylindrical shank.... If a single helical groove is cut or formed on a cylinder, it is called a single-thread screw. Should the helix angle be increased sufficiently for a second thread to be cut between the grooves of the first thread, a double thread will be formed on the screw. Double, triple, and even quadruple threads are used whenever a rapid advance is desired, as on fountain pens and valves. The helices on a double thread start 180° apart, while those on a triple begin 120° apart.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

Un filet triple est formé de trois saillies hélicoïdales amorcées à 120 ° d'intervalle, dont le pas égale la triple distance axiale entre trois filets consécutifs.

CONT

vis à filets triples.

Spanish

Save record 18

Record 19 1988-12-22

English

Subject field(s)
  • Joining Elements (Mechanical Components)
CONT

"screw threads" : Continuous helical ribs on a cylindrical shank.... If a single helical groove is cut or formed on a cylinder, it is called a single-thread screw. Should the helix angle be increased sufficiently for a second thread to be cut between the grooves of the first thread, a double thread will be formed on the screw. Double, triple, and even quadruple threads are used whenever a rapid advance is desired, as on fountain pens and valves. The helices on a double thread start 180° apart, while those on a triple begin 120° apart.

French

Domaine(s)
  • Éléments d'assemblage (Composants mécaniques)
CONT

"filet" : Rainure hélicoïdale d'un boulon, d'une vis, d'un écrou.

Spanish

Save record 19

Record 20 1987-11-27

English

Subject field(s)
  • Chutes, Spouts and Conveyors
DEF

a conveyor in which the conveying element is in the form of a solid helix attached to a central rotating shaft working within a tube normally inclined at an angle to the horizontal. The shaft normally rotates at a relatively high speed. The conveyor is generally used for intermittent light duties and for free flowing non-abrasive material.

OBS

screw auger conveyor: standardized by the British Standards Institution.

Key term(s)
  • screw auger conveyer

French

Domaine(s)
  • Convoyeurs et goulottes (Manutention)
DEF

(...) transporteur à hélice à spire pleine travaillant en position horizontale ou en position inclinée dont l'hélice, côté alimentation, est plus longue que le tube. La rotation de l'hélice fait avancer le produit dans le tube. (...) Ce transporteur est généralement utilisé dans le cas de service léger intermittent et pour des produits non abrasifs qui "coulent" facilement.

OBS

transporteur à vis tarière : normalisé par l'AFNOR.

Spanish

Save record 20

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