viernes, 30 de enero de 2015
viernes, 16 de enero de 2015
Mecanismes de transmissió
TRANSMISSIÓ PER ENGRANATGES. els engranatges són rodes que tenen dents en tot el perímetre extern i encaixen les unes amb les altres.
TRANSMISSIÓ PER CORRETJA: la corretja transmet el moviment d'una politja a l'altra.
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)
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)
TRANSMISSIÓ PER CADENA I PINYÓ: les baules d'una cadena s'acoblem a les dents d'una roda.
1. En el sistema de la figura el engranaje grande posee 40 dientes y está
acoplado a un motor, mientras que el piñón posee 20. Si z1 va a una velocidad de 50 revoluciones prm, z2, a qué velocidad irá?
z1·w1=z2·w2
40·50=20 w2
2000=20 w2
w2= 2000:20
w2= 100
2. Un motor que gira a 100 r.p.m. tiene montado en su eje un engranaje de 60 dientes y está
acoplado a otro engranaje de 20 dientes. A qué velocidad irá z2?
z1·w1=z2·w2
60·100=20 w2
6000:20= w2
w2= 300
3. Tenemos un motor que gira a 3000 r.p.m. con un engranaje de
45 dientes acoplado en su eje. Sabiendo que el engranaje
conducido posee 15 dientes, cuantás revoluciones tendrá z2?
z1·w1=z2·w2
TRANSMISSIÓ PER CORRETJA: la corretja transmet el moviment d'una politja a l'altra.
TRANSMISSIÓ PER CADENA I PINYÓ: les baules d'una cadena s'acoblem a les dents d'una roda.
1. En el sistema de la figura el engranaje grande posee 40 dientes y está
acoplado a un motor, mientras que el piñón posee 20. Si z1 va a una velocidad de 50 revoluciones prm, z2, a qué velocidad irá?
z1·w1=z2·w2
40·50=20 w2
2000=20 w2
w2= 2000:20
w2= 100
2. Un motor que gira a 100 r.p.m. tiene montado en su eje un engranaje de 60 dientes y está
acoplado a otro engranaje de 20 dientes. A qué velocidad irá z2?
z1·w1=z2·w2
60·100=20 w2
6000:20= w2
w2= 300
3. Tenemos un motor que gira a 3000 r.p.m. con un engranaje de
45 dientes acoplado en su eje. Sabiendo que el engranaje
conducido posee 15 dientes, cuantás revoluciones tendrá z2?
z1·w1=z2·w2
45·3000=15w2
135000=15 w2
135000:15=w2
w2=9000
135000=15 w2
135000:15=w2
w2=9000
viernes, 9 de enero de 2015
Pla inclinat, cargol i tascó.
Cargol: és un pla inclina, pero enrotllat sobre un cilindre. Quan s'aplica pressió i es cargola, es multiplica la força aplicada. Cada filet de la rosca, fa de tascó, introduint-se en el material amb poc esforç.
3. Indica els mecanismes simples que hi ha en els objectes següents:
a) Ganivet- PALANCA
b) Broca de fer forats- CARGOL
c) Punta de fletxa- TASCÓ
d) Tenalles- PALANCA
e) Arada- TASCÓ
f) Espiral- CARGOL
g) Persiana- POLITJA
h) Interruptor elèctric- PALANCA
PLA INCLINAT
El pla inclinat és una rampa que serveix per elevar càrregues fent menys esforços
F·B=R·A
R= Pes de l'hipopòtam
B= distància recorreguda
A= altura.
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