power calc of saw

7/27/2019 Power Calc of Saw

1/7


2/7

272 J. FOR. SCI., 56, 2010 (6): 271277

c cy cttg th w-

c by cttg-wdg dg th dt

th dg cttg dg,

c cy dct ch d -

ch ct gt th dg dg

th tth,

c cy ct th

bc d dg c gt th chd

c.

Dg th dd t c F

qt dct d dd y ct. T

t c F th dct cttg dFc

cd cttg c d t d ctc cc-

t gtc t dg th cttg c-

. T t dc t cFct th

th cc w tth th c

chd c d t cd wthdw cFw.I t t (gg dw), th t

d t th tb. I t gt (gg

), th c t th t d t cy

t d th tbty th t by g

ch (Holoprek, Rousek 2004).

Cttg c Fc

ctg th tth cc

w t ch t th wdth b d thc h. T

cttg c th g by th tct

cttg tc dtgtd tKd

th c ch ccttg.

Fc= K b h (N) (1)

T d cttg w Ac cdt

tht th cttg tc ctt h

th cttg c c b dd w:

Ac

=Fc l= K b h l (J) (2)

wh:l cttg wy tth th t ()

T cttg w dd th tct cttg cFc

d cttg d vc:

Pc

=Fc v

c(W) (3)

Ath wy cttg w dt th

t w d cd. T t

w W(W= N..1).

Ac

Pc

= (W) (4)

t

W c cct th cttg w by

th tq ccdg t:

2 Mk v

cP

c= (W) (5)

D

wh:

Mk

tq (N),D dt cc w ().

Cg c prc

f wcg y crcar aw

Accdg t th h cc w th

cw ct w c cgz th wg cc

w: t, d (cd g), cct (

th t th ght d cc) d dd

( th t ght d). T cct dd

t cc w dd th c

wc d gt th tth. Accdg t th

cttg c gdg th gt wdb cc w cw d gtd

cttg d (Mikle, Marko 1992). Ty d-

th tth d th wy hg.

T tth d th wy hg t

cd t th qd c cc-

w d t th qty chd c. Ty

t b d ccdg t th ty wc

(t, hd wd d th ty wc) d

th t cttg dg (t t, ctd

cbd t).

Mx t t th x d100 1 t th ch cc w. T

Fg. 1. T ch cc

w cttg

wh: z d tth

(), cttg hght (),

d t (1), c ct-

tg d (1),1 th ty

g cc w (), 2 th

xt g cc w (),

g ct b

(), h x. thc

ch ()


3/7

J. FOR. SCI., 56, 2010 (6): 271277 273

d t wg d bt t hw t

bty whch gtd by th ct.

F gttg th t c cc

w t cy t ch cttg cdt

ccdg t th ct t. T cdd

cttg d cc w ccdg t th

t :

t wd 60100 1,

hd d xtc wd 5085 1.

I th g cdd cttg d

ch t th td gdg th

qt th cttg c qty, tch-

gc tt ch tc. Ctg th c-

dd cttg d d t h y ctc

g d t t cdd cc

. Cc w h bt ctct

d thy t qty d ccttg

wh hdg th d d t ( t

4050 c). T dtg hgh cttg bty,

tbty d g t.

I ctc t y tt t ct th

wh cttg c wth th wt w c-t. M ct c th w c-

t, .g. th chc tb t

th cttg t, t gty d t cttg

cdt (cttg d vc, d t v

f, d

tth fz). T cttg w y tt

d t th ct w ct. Ag

wth th cttg cdt th cttg g

dc th c t, ch,

cc chg ty, chd c

qty d d xct wc.

Cttg g cc w hw Fg. 2.T wg cttg g c dh th chd

c qty, cct dg d dc th

t t, c th cttg tc d

c th t ch d ccy

th t (Lisian, Zemiarov 1988).

T cg-wg ag . Wh th cttg-

wdg g g (.. th g th cttg t

t), th cttg tc th t

hgh. It btt wh th cttg g

b bt wh th cttg g th

ct , th hd th cttg dg y

w d t bc w d bt y t. Wh

w wt t d th cttg-wdg g, w h

t d th g d . T g th

ctd cbd t d hgh-d

t, bc ctd cbd t g.T cg carac ag . My ct

btw th cttg cc g d cd

c c th cttg cc g. Wh

th g , th ct hgh d vice

Fg. 2. T ch cttg t gty (.. cc w

gty)

1 tth, 2 tth g, t cg tth, hz

cg

hght, cttg cc g, cttg-wdg g,

cttg-dg d , cttg g

Fg. 3. T ch xtg dc

1 wg tb, 2 dg , 3

d tb, 4 g bt

th dg cc w, 5 c-

tc t th dg cc

w, 6 bg c, 7 ctc

t th dg th t t

th ct, 8 d hd cc

w, 9 cc w, 10 20WN

cd tq d t,

11 GFLL-28 ctch, 12 S2 c

cd

Cttg t Fdg t


4/7

274 J. FOR. SCI., 56, 2010 (6): 271277

versa. It th fct cd by dcg cttg

cc g d c btw th cttg

cc d cd c dcty bhd th

cttg dg. T c gt gdy cd

wth hgh btg th cttg dg bc th

d c bt cttg dg d t ct th

t th c ch cttg. It y

th g th wt t th cttg dg

bt t th yg tt bt hgh. T

cttg cc g h dct c th

d cttg tc d th wh w

cttg. I ctc th cttg cc g

btw 10 d 30.

T cg-g ra . T cttg-dg d

c th ch c ct d th z

ch. It h tt g dt

ch cg, .g. th dct chbd.

T t dd th ty c-

d t, dct b d d

d dg by th thc ch.

MAtRA And Mthds

h xt g dc w d-

d ch wd ccttg t

d cttg t. It ch hw Fg. 3.

T g qt ct tw t, ..

cttg d dg t. T cttg t d

dt d t th tq t t. T

dg t d wc cg d d-

g wd t th ct.A t hw th ch, th-h y-

ch 7.5 W ctc t d. It tq

tttd by th d hd t t (cc-

w). T wd xd th t

th hd by yt whch d ty

hdg. T cw dg th wc

dd by 5.5 W ctc t by

ty ctch d d cw. A HBM S2 c -

cd btw th t d th t. Cb

tt d g th c d tq

b 1. Bc t cc w

Bc dSw

dtD ()

Sw wdthB ()

Cttg-cc g

()

Cttg-dgd

()

N. tth

Cc w d hgh-d t 600 5.4 20 5, 0, 5, 10 56

Cc w wth ctd cbd t 600 5.4 15 10, 0, 10, 20 54

Fg. 4. T c Mk

d c c t th cttg wd (bch) ccttg

120

100

80

60

40

20

0

20

40

60

80

100

120

140

160

Torque(N.m)

q (N.)Pw (N)

00.008 00.500 01.000 01.500 02.000 02.500 03.000 03.500 04.000 04.500 05.000 05.500 06.000 06.5000 07.000 07.500 08.100


5/7

J. FOR. SCI., 56, 2010 (6): 271277 275

t SPIDER-8 g ct whch cctd

t PC. T tq HBM 20WN b t

gt th t cc w. Fqcy

ct wth ct ct gt th -

t d th w ctc t.

I xt tt wd 18 c d-

t d 1.5 gth w d. T wd

w d bch, d c. T tw xty 45% c, 5060% bch

d . It w d by th wghg thd.

T w ct by cc w wth ctd

cbd t d d hgh-d t (th

tchc t hw b1).

T t wd (bch d ) w

d t cc w t 1,900 1, t

th cttg d 59.66 1 d d t 152 1.

T d t c wd w dcd bc

th cc w jg th wd-cttg

c. It w 103 1.

Rsuts And dsCussn

A t th xt w t d-

t th c dft cttg-dg d

th tq d c c t

th ct (Fg. 4). T cttg-dg d cd

cttg tc d th wh c wd

ccttg. h t w cd by th

C Sd g.

F th tqMkc t cttg bch by

cc w wth ctd cbd t t w -

b t gt c t t th bg-

g th tt t (cc w) t th

ct, th th w ct dc th ,whch w cd by th t cc w, d

th wg xt th cttg c. T

th cttg c t ct ctt (th

tq chgd y tt), y t th d

th cttg c th chd th tt wh

th cc w ttd wtht y d. T c

tqMk

th cttg c cc w

d hgh-d t w chctzd by hgh

c t th x , th t dcd t-

t t ct d y t dcd dy,

whch w cd by cttg t th wd.

F th btd t th tqMk

t d-

t cttg-dg d cc w wth

ctd cbd t d cc w d

hgh-d t dft ty wd w

ddcd th x Mk

th tc

t d w cd t th y

bc tttc t (b 2).

b 2. Athtc x Pc

th tc cttg-dg d cc w

Sc wd/cttg-dg d ()

V cttg wPc

(W)

cc w d hgh-d t cc w wth ctd cbd t

10 5 0 5 20 10 0 10

Bch 3.5875 3.8342 4.0389 4.0947 3.9813 3.8919 3.9554 4.0011

O 3.7427 3.8898 4.1126 4.1305 4.0648 3.7805 3.9057 4.0131

Sc 3.8063 3.9833 4.1245 4.1046 4.2219 3.9077 3.9833 4.1921

Fg. 5. T cttg c Pc

th c

wd ccttg by cc w d hgh-dt

Fg. 6. T cttg c Pc

th c

wd ccttg by cc w wth ctd cbdt

3.60

3.80

4.00

4.20

ttingPowerPc(kW

)

10

5

3.20

3.40

3.60

3.80

4.00

4.20

Beech Oak S ruce

CuttingPowerPc(kW

)

10

5

0

-55

3.50

3.60

3.70

3.80

3.90

4.00

4.10

4.20

4.30

Beech Oak S ruce

CuttingPowerPc(kW)

20

10

0

-1010

Pc P

c


6/7

276 J. FOR. SCI., 56, 2010 (6): 271277

T w ctd th ghc t th-

tc x Mk, whch g btt w btd t. T

cttg w cctd th tq d t

th dt cc wD = 600 d th

cttg d

v = 59.66 .1.

dt cc ddc

t gdg th w ct

th wdcttg c by cc w (tq

d x w w ch ct) t-

ct y c ANOVA w d. W

wtd t d t cc tttc ddc

btw x w ( ddt b),

wd ty, ty cc w d th cttg-dg

d ( ddt b). T -

t tht th t c c ch

th. F ch hyc t th t w

tttcy td by th-ct y

c. W dcdd t cd y tw cttg-dg d , .. 0 d 10, tt.

T w tht gt th cttg-

dg d cc w w th tht

w th t b. Ghc d ttt-

c t hw Fg. 46.

F th t ct th cttg c (wd

ty, cttg-dg d , ty cc w) t

b t dty gz w:

wd ty tt ct cg

w ct th cttg c d

cttg w,

th cttg-dg d cc w th

tt ct cg cttg w Pc,

th ct th chg cc w ty

(wth th gty) h th hght -

c cttg w.

T t th b-td tttc

t t th cttg

Fg. 7. Ic th cttg-dg d

cc w th cttg w ccdg

t th ty wd c

Fg. 8. Ic th cttg-dg d

cc w th cttg w ccdg

t th ty cc w

4.10

4.05

4.00

3.95

3.90

3.85

3.80

3.75

3.70BK DB SM

c

Pc

Ag 0

Ag 10

4.3

4.24.1

4.0

3.9

3.8

3.7

3.6

3.5

3.4

3.3 SK HSS

Dc

Pc

Ag 0Ag 10


7/7

J. FOR. SCI., 56, 2010 (6): 271277 277

w Pc

t dd cttg-dg d

cc w, wd ty d ty cc wcd tht th bt th cttg-dg

d t wd ccttg by cc w wth

ctd cbd t d cc w d

hgh-d t, wh th t ct-

tg-dg d (10) t wd ty wht

th ct ct t th thy

cw wd cttg .

CnCusn

I ctc t y tt tht th wh c-

wd ccttg hd wth th wt

w ct. T y ct whch

c t w ct, .g. t th

cttg t, t gty d t cttg c

(cttg d vc, d t v

f). T cttg w

y tt ct w ct. T

tzt cc w wth tb tchc

d tchgc t th g cdt

w c b xd by wg dcc:

t cc w wg d bd qty th ct,

hgh w ct, hgh wd c-

t th c dct bc bg dd-

t chg cy.

R f r c

Holoprek J., Rousek M. (2004): C th tht-

c cct tc cttg tcbd wth

xt. I: Ch d Ch Wd-cttg 04.

B Ptt IV. Ch d Ch Wd-cttg.

St Sc, 14.16. Octb 2004. Z, chc

zt Z: 99104. ( Czch)

Lisian J. (1996): Ty d chq Wd Pcg.

Z, Mtct: 626. ( S)

Lisian J., Zemiarov B. (1988): Pcg d Cttg

Wd Mt. Mt ctc. Z, chc

zt Z. ( S)

Marko J., Holk J. (2000): Ty Wd Cttg. Z,

chc zt Z. ( S)

Mikle M., Marko J. (1992): Ty d Ctct

Ft Mch 1. Z, chc zt Z.

( S).

Rcd bct Stb 23, 2009

Acctd t cct Nb 9, 2009

Fg. 9. F tct th cttg-dg d

cc w, wd c d ty

cc w t t th cttg w

Corresponding author:

Ig. Jn Kov, Ph.D., chc zt Z, Ft tj bj tchy,

Ktd j bj tchy, . G. My 24, 960 53 Z, S

t.: + 421 455 206 517, x: + 421 045 532 0015, -: [email protected].

4.2

4.1

4.0

3.9

3.8

3.7

3.6

3.5 c BK DB SM BK DB SM

Dc: SK Dc: HSS

Pc

Ag 0

Ag 10

power calc of saw

Documents