MC TIU BI HC: Sau khi hc xong tit hc ny hc sinh hiu c:1- Kin thc: - Hiu c quy trnh lm khun MBA - Lm c khun qun dy theo thit k 2- K nng: - Chun b c nhng vt liu v dng c cn thit lm khun ba qun dy cho my bin p - Rn luyn k nng lm khun qun dy MBA. 3- Thi : - C thc say m, hng th hc tp b mn in dn dng. - Lm vic c tc phong cng nghip, k thut, chnh xc. - Rn thc m bo an ton trong lao ng.

0v a

48v

0vh

6v

a

I. Chun b vt liu v dng c.

I. Chun b vt liu v dng c. + Vt liu: - Giy ba KT in cng, - Bng keo v h dn + Dng c - Ko hoc dao rc giy, bt ch, thc k. - Kch thc li thp MBA (ch E, I )

I. Chun b vt liu v dng c.II- Quy trnh:

- Ni dung thc hnh: Lm khun qun dy cho mch t li thp MBA c cc kch thc: h = 3,6 cm ; c = 1,2 cm ; b = 2,8 cm ; a = 2,5 cm II- Quy trnh:Lm thn khun c a h b

M khun

Rp khun

M khun

Thn khun

h

b Thn khun

I. Chun b vt liu v dng c

II- Quy trnh: 1. Lm thn khunPhn thn khun c dng hnh hp ch nht, v c kch thc a, b b nh hnh v Trong : a: B rng li thp b: B dy li thp h: chiu cao ca sh

II- Quy trnh:1. Lm thn khun

Cho h = 3,6cm ; c = 1,2cm: a = 2,5cm ; b = 2,8cm

h=3,6cm

I. Chun b vt liu v dng c II- Quy trnh: 1. Lm thn khun Bc 1: o v vch cc kch thc a, b trn giy

1. Lm thn khunBc1: o v vch cc kch thc a, b trn giy

a= 2,5cm

b= 2,8 cm

a= 2,5cm

b= 2,8 cm

a= 2,5cm+ b dy giy

I. Chun b dng c II- Quy trnh: 1. Lm thn khun B1: o v vch cc kch thc a, b trn giy B2: Lm np gp cc ng giao nhauh

1. Lm thn khun.Bc 2: Lm np gp cc ng mi k.

Bc 3: Gp v dn.

5

1h

2

3

4

1 a

2

3

4

5

b5

a

b

a

ba

5 1 a 1

h

b

a

b

I. Chun b dng c

b+2c

2. Lm m khuna+2cC=1,1cmC=1,1cm C=1,1cm

II- Quy trnh:1. Phn thn khun 2. Lm m khun B 1: o v k cc kch thc, ct ba m khun B2: K cc ng chia

Bc 1: o v k cc kch thc & Ct m khun-Rng = a + 2 c = 2,5 +(1,2 x 2) = 4,9 cm -Di = b + 2 c = 2,8 + (1,2 x 2)= 5,2 cm

B 2: K cc ng chia trn ba m khun.

2. Lm m khunII- Quy trnh:

1. Phn thn khun2. Lm m khunB 1: o v k cc kch thc: B 2: Ct m khun

Bc 3: Ni v ct hai ung choC=1,1cm

C=1,1cm C=1,1cm

C=1,1cm

II- Quy trnh: 1. Lm thn khun 2. Lm m khun B1: ct m khun B 2: o v k cc kch thc B3: Ni v ct hai ung cho B 4: Xp 4 cnh va ct. c l bt dy theo thit k

2. Lm m khunBc 4: Xp 4 cnh va ct. c l bt dy theo thit k -S l bt dy cun s cp v th cp nhiu hay t ph thuc vo s cp in p vo v ra. -Cc l phi cch u nhau Vanh trn 1mm

-Vanh trn 4 gc tng m thut v khi vng dy khi qun.

a+2c

I. Chun b vt liu v dng c

3. Rp khunM khun

II- Quy trnh:1. Phn thn khun

c

3. Rp khunb c Thn khun h

2. Lm m khun

I. Chun b vt liu v dng c

4: Hon thnh sn phm, kim tra kch thc, bn... Yu cu k thut - ng hnh dng, ng kch thc, rp va li thp. - Cng, bn - M thut pb h c Di l

II- Quy trnh:1. Phn thn khun 2. Lm m khun 3. Rp khun 4. Hon thnh sn phm, kim tra kch thc, bn...

a

I. Chun b vt liu v dng c: II- Quy trnh: 1. Phn thn khun 2. Lm m khun 3. Rp khun 4. Hon thnh sn b phm, kim tra kch thc, bn... III. Thc hnh lmh khun: c

III. Thc hnh lm khun: ( 20)-Hc sinh thc hnh lm khun ca my bin p ph hp vi li thp vi cc s liu sau: H = 3,6cm ; c = 1,2cm ; b = 2,8 cm ; a = 2,5 cm c H a

b

a

I.Chun b vt liu v dng c II- Quy trnh:

IV. nh gi sn phm:

Biu im: 1. Phn thn khun - Chun b y dng c:(1,5) - ng hnh dng, ng kch thc 2. Lm m khun (4 ) - Cng, bn (1,5 ) 3. Rp khun - M thut p (1 ) - An ton lao ng (1 ) 4. Hon thnh sn phm, kim tra kch - ng thi gian (1 ) thc, bn...h

0v 0v 0v 6v 6v

48v

III. Thc hnh lm khun IV. nh gi sn phm:a

c