2011


20-88 O METODĂ DE PROIECTARE A ANGRENAJELOR ELICOIDALE

A HELICAL GEAR DESIGN METHODOLOGY
Within the writing there is structured a cylindrical helical gear design
methodology, starting from the theme elements, passing the resistance pre
seizing, geometrical calculation, geometry verification in connection to limit
conditions for generation and gearing, up to resistance calculation test.
Key words: helical gears, involutes crossed, helical gears
Cuvinte cheie: viteze elicoidale, evolventă, angrenaje elicoidale

88 O METODĂ DE PROIECTARE A


20-89 MOBILITATEA CUPLAJEROR DINŢATE ALE POMPELOR CU CAVITĂŢI PROGRESIVE (PCP)

MOBILITY OF PROGRESSIVE CAVITY PUMPS
(PCP) GEAR COUPLINGS
The writing represents a study on the angular mobility of the toothed
surfaces used for the progressive cavity pumps (PCP), in the transmission from
the drive shaft to the pump rotor: the teeth bulging and the play between the
flanks, the contact conditions of the teeth based on the blocking contour of an
inner gear with zero tooth number difference.
Keywords: gear couplings, progressive cavity pumps (PCP)
Cuvinte cheie: cuplaje dinţate, pompe cu cavităţi progresive (PCP)

89 MOBILITATEA CUPLAJEROR DINŢATE ALE


20-90 ASPECTE ENERGETICE LA ALEGEREA UNEI ANTRENĂRI ELECTROMECANICE

ENERGETIC ASPECTS AT THE CHOICE OF AN
ELECTROMECHANICAL DRIVE
This paper estimates an important criterion regarding the choice of an
electromechanical drive: energetic efficiency. The efficiency of the driving
system is analysed taking into account the transformer and power network,
frequency converter, motor, a belt transmission, a gearbox and the coupling
between the gearbox and the driven machine.
Keywords: gear motor, reducer, return, choosing a life coach,
electromechanical
Cuvinte cheie: motoreductor, reductor, randament, alegerea unei
antrenări electromecanice

90 ASPECTE ENERGETICE LA ALEGEREA


20-91 STUDIUL FORŢELOR ŞI A EFICIENŢEI ÎN ANGRENAJUL MELC-ROATǍ PLANǍ

THE STUDY OF FORCES AND EFFICIENCY IN
WORM-FACE GEAR DRIVE
This paper presents a study of forces and efficiency determination for
a particular worm-face gear drive in which the worm is of ZK1-type. The study
is strictly limited to formulas determination for axially, radially and separation
forces, as well as, for gear drive efficiency. These characteristics allow for
better gear drives design, as well as, for their performance improvement.
Keywords: worm gear wheel surface, strength and efficiency
Cuvinte cheie: angrenaj melc-roată plană, forţe şi eficienţă

91 STUDIUL FORŢELOR ŞI A EFICIENŢEI ÎN


20-94 FREZELE MELC PENTRU DANTURAREA ROŢILOR CICLOIDALE CU PROFILURI TEORETIC EXACTE ALE DINŢILOR – TEORIE ŞI TEHNOLOGIE DE EXECUŢIE (I)

HOBS FOR TOOTING THE CYCLOIDAL GEAR WITH
EXACT PROFILE OF THE TOOTH AND
MANUFACTURING TECHNOLOGY (I)
The paper presnts the theory and manufacturing technology of hobsfor
toothing the cycloidal gear with exact profile of the tooth.
Keywords: worm gear cutters exact cycloidal tooth profiles
Cuvinte cheie: freze melc pentru angrenaje cicloidale cu profiluri
exacte ale dinţilor

94 FREZELE MELC PENTRU DANTURAREA ROŢILOR


20-95 FREZELE MELC PENTRU DANTURAREA ROŢLOR CICLOIDALE CU PROFILURI TEORETIC EXACTE ALE DINŢILOR – TEORIE ŞI TEHNOLOGIE DE EXECUŢIE (II)

HOBS FOR TOOTING THE CYCLOIDAL GEAR WITH
EXACT PROFILE OF THE TOOTH AND
MANUFACTURING TECHNOLOGY (II)
The paper presnts the theory and manufacturing technology of
hobsfor toothing the cycloidal gear with exact profile of the tooth.
Keywords: worm gear cutters exact cycloidal tooth profiles
Cuvinte cheie: freze melc pentru angrenaje cicloidale cu profiluri
exacte ale dinţilor

95 FREZELE MELC PENTRU DANTURAREA ROŢLOR


20-96 APLICARE A MELCULUI GENERATOR PENTRU MANUFACTURAREA ROŢII FRONTALE LA ANGRENAJUL PINION CILINDRIC-ROATǍ FRONTALǍ (I)

GENERATOR WORM APPLICATION FOR MANUFACTURING
OF FACE GEAR FOR FACE GEAR DRIVE (I)
The paper presents the application of generator worm for
manufacturing of face gear for face drive.
Keywords: worm generator
Cuvinte cheie: melc generator

96 APLICARE A MELCULUI GENERATOR PENTRU


20-97 APLICARE A MELCULUI GENERATOR PENTRU MANUFACTURAREA ROŢII FRONTALE LA ANGRENAJUL PINION CILINDRIC-ROATǍ FRONTALǍ (II)

GENERATOR WORM APPLICATION FOR MANUFACTURING
OF FACE GEAR FOR FACE GEAR DRIVE (II)
The paper presents the application of generator worm for
manufacturing of face gear for face drive.
Keywords: worm generator
Cuvinte cheie: melc generator

97 APLICARE A MELCULUI GENERATOR PENTRU


20-98 APLICARE A MELCULUI GENERATOR PENTRU MANUFACTURAREA ROŢII FRONTALE LA ANGRENAJUL PINION CILINDRIC-ROATǍ FRONTALǍ (III)

The paper presents the application of generator worm for
manufacturing of face gear for face drive.
Keywords: worm generator
Cuvinte cheie: melc generator

97 APLICARE A MELCULUI GENERATOR PENTRU


20-99 POSIBILTǍŢI DE EXECUŢIE A FREZELOR MELC CONICE LA S.C. SCULǍRIA SRL CUGIR (I)

MANUFACTURING POSSIBILITY OF CONICAL HOB
AT S.C. SCUǍRIA SRL CUGIR (I)
The paper presents manufacturing possibility of conical hob for tooting
the Klingelnberg-Palloid bevel gear.
Keywords: snail tapering drill
Cuvinte cheie: frezǎ melc conicǎ

99 POSIBILTǍŢI DE EXECUŢIE A FREZELOR MELC


20-100 POSIBILTǍŢI DE EXECUŢIE A FREZELOR MELC CONICE LA S.C. SCULǍRIA SRL CUGIR (II)

MANUFACTURING POSSIBILITY OF CONICAL HOB
AT S.C. SCUǍRIA SRL CUGIR (II)
The paper presents manufacturing possibility of conical hob for tooting
the Klingelnberg-Palloid bevel gear.
Keywords: snail tapering drill
Cuvinte cheie: frezǎ melc conicǎ

100 POSIBILTǍŢI DE EXECUŢIE A FREZELOR MELC


20-101 CONSIDERAŢII ASUPRA UZURII TEHNICE DE ADERENŢĂ

CONSIDERATIONS SUR L’USURE TECHNIQUE
D’ADHÉRENCE
Le travail présente quelques considérations sur l’usure d’adhérence,
avec référence aux pompes des machines pour la protection des plantes. La
modification de la qualité des surfaces au cours d’un mouvement relatif par
l’intervention d’un facteur chimique des substances pompées, amène, assez
souvent, au blocage, par apparition de l’usure d’adhérence. Au début, on a fait
une classification générale des usures et on a donné les principaux paramètres
qui caractérisent l’usure d’adhérence. On a donné après, la loi de base de
l’usure d’adhérence et quelques considérations sue le coefficient de l’usure
d’adhérence. Avec des essais complexes, dans des conditions
d’environnement et de sollicitations diverses, on peut établir des algorithmes de
calcul du niveau de l’usure d’adhérence, le plus proche de la réalité.
Mots-clés: usure adhésive, l’usure à vitesse moyenne, l’intensité de
l’usure ou le taux d’usure, usure spécifique, l’usure relative, coefficient d’usure,
résistance à l’usure, le risque
Cuvinte cheie: uzura de aderenţă, viteză medie de uzură, intensitatea
uzurii sau ritmul uzurii, uzură specifică, uzură relativă, coeficient de uzură,
rezistenţă la uzură, risc

101 CONSIDERAŢII ASUPRA UZURII TEHNICE


20-102 UZURI SPECIFICE ALE COMPONENTELOR POMPELOR DE LA MAŞINILE PENTRU PROTECŢIA PLANTELOR

PIÈCES SPECIFIQUES DES POMPES PORTER
POUR LA PROTECTION DES MACHINES DE PLANTES
Le travail présente les principaux types d’usures qui apparaissent aux
pompes des machines pour la protection des plantes. Pendant le
fonctionnement d’un system technique, appraising des usuriers, dues aux
frictions et aux agressions physique et/ou chimiques, usures qui modifient
géométriquement, dimensionnelle et structurale, les qualités fonctionnelles du
système. Les usures bessent les performances fonctionnelles du mécanisme.
La connaissance de la spécificité et des limites de ces usures, dans des
conditions complexes où elles se passent, a un caractère empirique. Celle-ci
implique une observation attentive de toutes les zones et de tous les types
d’usures, qui, dans le cas des pompes des machines pour les travaux pour la
protection des plantes, sont influencées différemment par l’agressivité chimique
des substances pompées.
L’optimisation de la relation prix de revient sécurité en fonctionnement
(fiabilité et maintenance) amène a un degré élevé d’utilisation des pompes,
avec le maintien constant des paramètres de fonctionnement, qui peut se faire
seulement par des essais complexes, dans des différentes conditions de
matériau et d’environnement.
Mots-clés: usure, pompes à piston, pompes centrifuges et pompes à
rouleaux, palettes de vitesses, pompes à lobes, pompes à membrane, pompes
péristaltiques spécifiques
Cuvinte cheie: uzura specifică, pompe cu piston, pompe centrifuge,
pompe cu role şi paleţi, pompe cu roţi dinţate, pompe cu lobi, pompe cu
membrană, pompe peristaltice

102 UZURI SPECIFICE ALE COMPONENTELOR POMPELOR


20-103 FORMULA DE REGLARE A CUPLELOR CU PAS ELICOIDAL VARIABIL

THE FORMULA FOR ADJUSTMENT OF CUPLINGS
WITH VARIABLE ELICOID PITCH
The paper presents a calculus method of the formula for adjustment of
couplings with variable helicoids pitch.
Keywords: couple variable pitch helical
Cuvinte cheie: cuplă cu pas elicoidal variabil

103 FORMULA DE REGLARE A CUPLELOR


20-104 DISPOZITIV DE RECTIFICAT SUPRAFEŢE ELICOIDALE ALE SCULELOR AŞCHIETOARE ADAPTABIL PE MAŞINI DE RECTIFICAT PLAN

DEVICE FOR GRINDING HELICAL SURFACES OF MILLING
CUTTERS TO ADAPT AT PLANE GRINDING MACHINE
The paper presents a device for grinding helical surface of milling
cutters to adapt at plane grinding machine.
Keywords: helical surfaces of the tool rake
Cuvinte cheie: suprafeţe elicoidale de degajare la scule

104 DISPOZITIV DE RECTIFICAT SUPRAFEŢE ELICOIDALE


20-105 PARAMETRII GEOMETRICI AI UNUI ANGRENAJ MELC-ROATĂ PLANĂ. STUDIU DE CAZ (I)

GEOMETRICAL PARAMETERS OF WORM-FACE
DRIVE FOR ONE CASE STUDY (I)
The paper presents the caculus of geometrical parameters for wormface
drive a case study.
Keywords: worm gear wheel surface, parameters
Cuvinte cheie: angrenaj melc roată plană, parametri

105 PARAMETRII GEOMETRICI AI UNUI ANGRENAJ


20-106 PARAMETRII GEOMETRICI AI UNUI ANGRENAJ MELC-ROATĂ PLANĂ. STUDIU DE CAZ (II)

GEOMETRICAL PARAMETERS OF WORM-FACE
DRIVE FOR ONE CASE STUDY (II)
The paper presents the caculus of geometrical parameters for wormface
drive a case study.
Keywords: worm gear wheel surface, parameters
Cuvinte cheie: angrenaj melc roată plană, parametri

106 PARAMETRII GEOMETRICI AI UNUI ANGRENAJ


20-107 PRINCIPIUL DE GENERARE A DANTURII ROŢILOR DINŢATE CONICE KLINGELNBERG-PALLOID (I)

THE GENERATION PRINCIPLE OF
KLIGELNBERG-PALLOID BEVEL GEARS (I)
The paper prezents the kinematic principle for generation of
Klingelnberg-Palloid bevel gears
Keywords: Wheel curved conical teeth, flat wheel and the bit
generating cone snail
Cuvinte cheie: Roata conică cu dinţi curbi, roată plană generatoare şi
freza melc conică

107 PRINCIPIUL DE GENERARE A DANTURII ROŢILOR


20-108 PRINCIPIUL DE GENERARE A DANTURII ROŢILOR DINŢATE CONICE KLINGELNBERG-PALLOID (II)

THE GENERATION PRINCIPLE OF
KLIGELNBERG-PALLOID BEVEL GEARS (II)
The paper prezents the kinematic principle for generation of
Klingelnberg-Palloid bevel gears
Keywords: Wheel curved conical teeth, flat wheel and the bit
generating cone snail
Cuvinte cheie: Roata conică cu dinţi curbi, roată plană generatoare şi
freza melc conică

108 PRINCIPIUL DE GENERARE A DANTURII ROŢILOR