Bazele Aschierii si Generarii SuprafetelorLucrarea de laborator nr.Studiul experimental al fortei axiale si al momentului de aschiere la burghiere Student: Danciu GabrielGrupa: 1131Data:

Conditii experimentale:Utilaj: Masina de gaurit 4GCoD

Mediu: aerSemifabricart OL37 20x20x100Dinamometru pentru burghiere BKM2010

Tabel cu date experimentaleValori masurate

nr.crt. D [mm] n [rot/min] s [mm/rot] v [m/min] t [mm] sd [mm/dinte] Fa [N]1 8 280 0.1 7.0 4 0.05 14002 8 280 0.16 7.0 4 0.08 16903 8 280 0.25 7.0 4 0.125 25204 8 450 0.1 11.3 4 0.05 13305 8 450 0.16 11.3 4 0.08 16106 8 450 0.25 11.3 4 0.125 23807 12 280 0.1 10.6 6 0.05 16508 12 280 0.16 10.6 6 0.08 22409 12 280 0.25 10.6 6 0.125 294010 12 450 0.1 17.0 6 0.05 154011 12 450 0.16 17.0 6 0.08 210012 12 450 0.25 17.0 6 0.125 280013 15 280 0.1 13.2 7.5 0.05 210014 15 280 0.16 13.2 7.5 0.08 252015 15 280 0.25 13.2 7.5 0.125 322016 15 450 0.1 21.2 7.5 0.05 210017 15 450 0.16 21.2 7.5 0.08 252018 15 450 0.25 21.2 7.5 0.125 3080

Scula: burghie elicoidale tip N din Rp3 2kr=118°

0.08 0.1 0.12 0.14 0.16 0.18 0.2 0.22 0.24 0.260

2

4

6

8

10

12

14

16

Mt=f(s)

s [mm/rot]Linear (s [mm/rot])

Mt

0.08 0.1 0.12 0.14 0.16 0.18 0.2 0.22 0.24 0.260

500

1000

1500

2000

2500

3000

3500

Fa=f(s)

s [mm/rot]Linear (s [mm/rot])

Fa

7 8 9 10 11 12 13 14 15 160

500

1000

1500

2000

2500

3000

Fa=f(D)

D [mm]Linear (D [mm])

Fa

Schema prelucrarilor

Valori masurateMa[Nm] lg D lg s lg Fa lg Ma XF YF XM YM lg CF

3.2 0.90309 -1.00000 3.14613 0.50515 0.72 0.60 2.00 0.75 3.054.8 0.90309 -0.79588 3.22789 0.68124 0.72 0.60 2.00 0.75 3.056.9 0.90309 -0.60206 3.40140 0.83885 0.72 0.60 2.00 0.75 3.053.9 0.90309 -1.00000 3.12385 0.59106 0.72 0.60 2.00 0.75 3.054.5 0.90309 -0.79588 3.20683 0.65321 0.72 0.60 2.00 0.75 3.056.8 0.90309 -0.60206 3.37658 0.83251 0.72 0.60 2.00 0.75 3.057.5 1.07918 -1.00000 3.21748 0.87506 0.72 0.60 2.00 0.75 3.05

10.5 1.07918 -0.79588 3.35025 1.02119 0.72 0.60 2.00 0.75 3.0515 1.07918 -0.60206 3.46835 1.17609 0.72 0.60 2.00 0.75 3.058.2 1.07918 -1.00000 3.18752 0.91381 0.72 0.60 2.00 0.75 3.0512 1.07918 -0.79588 3.32222 1.07918 0.72 0.60 2.00 0.75 3.05

15.7 1.07918 -0.60206 3.44716 1.19590 0.72 0.60 2.00 0.75 3.0512 1.17609 -1.00000 3.32222 1.07918 0.72 0.60 2.00 0.75 3.05

16.5 1.17609 -0.79588 3.40140 1.21748 0.72 0.60 2.00 0.75 3.0526 1.17609 -0.60206 3.50786 1.41497 0.72 0.60 2.00 0.75 3.05

10.5 1.17609 -1.00000 3.32222 1.02119 0.72 0.60 2.00 0.75 3.0515.3 1.17609 -0.79588 3.40140 1.18469 0.72 0.60 2.00 0.75 3.0522.8 1.17609 -0.60206 3.48855 1.35793 0.72 0.60 2.00 0.75 3.05

Suma 18.95017 -14.38764 59.91929 17.63872 0.72 0.60 2.00 0.75 3.05

D

n

Ma , Fa

7 8 9 10 11 12 13 14 15 160

2

4

6

8

10

12

14

16

18

Mt=f(D)

D [mm]Linear (D [mm])

Mt

7 8 9 10 11 12 13 14 15 160

500

1000

1500

2000

2500

3000

Fa=f(D)

D [mm]Linear (D [mm])

Fa

otel OL37kp1,1= 1500p 0.22

Modelul exponential Modelul KIENZLElgCM CF CM Fa calc [N] Mt calc [Nm] Fp [N] Mcalc [N.m]kp1.1 p-0.53 1123.1 0.3 1261 3.4 599.9 2.4 1500 0.22-0.53 1123.1 0.3 1672 4.8 865.5 3.5 1500 0.22-0.53 1123.1 0.3 2185 6.7 1225.9 4.9 1500 0.22-0.53 1123.1 0.3 1261 3.4 599.9 2.4 1500 0.22-0.53 1123.1 0.3 1672 4.8 865.5 3.5 1500 0.22-0.53 1123.1 0.3 2185 6.7 1225.9 4.9 1500 0.22-0.53 1123.1 0.3 1688 7.6 899.8 5.4 1500 0.22-0.53 1123.1 0.3 2238 10.8 1298.3 7.8 1500 0.22-0.53 1123.1 0.3 2926 15.2 2069.7 12.4 1500 0.22-0.53 1123.1 0.3 1688 7.6 1050.6 6.3 1500 0.22-0.53 1123.1 0.3 2238 10.8 1487.6 8.9 1500 0.22-0.53 1123.1 0.3 2926 15.2 2069.7 12.4 1500 0.22-0.53 1123.1 0.3 1983 11.9 1313.3 9.8 1500 0.22-0.53 1123.1 0.3 2628 16.9 1859.5 13.9 1500 0.22-0.53 1123.1 0.3 3435 23.7 2587.2 19.4 1500 0.22-0.53 1123.1 0.3 1983 11.9 1313.3 9.8 1500 0.22-0.53 1123.1 0.3 2628 16.9 1859.5 13.9 1500 0.22-0.53 1123.1 0.3 3435 23.7 2587.2 19.4 1500 0.22-0.53 1123.1 0.3