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1

Relations between top-plate filing angle values of cutting chains and chain saw vibration levels

100%
Stempski W., Jablonski K., Wegner J.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2010
|
tom 09
|
nr 2
31-39
The investigations were conducted on 21 BP Oregon cutting chains, with five top-plate filing angle values: 20°, 25°, 30°, 35° and 40°. The chain saw was a 254 Husqvarna model with an Oregon 15” bar. The vibration measurements were conducted while cross-cutting pine logs, and they were performed according to the PN-91/N-01352 [1991] standard. For each of the angles tested 36 measurements were carried out (18 measurements on the front handle and 18 on the rear one). The investigations proved statistically significant differences in vibration levels between different top-plate filing angle values. Apart from that, significant differences were found between vibration levels on different handles and in different measurement axes (x, y, z). The lowest vibration levels were found with chains with extreme top-plate filing angles (20° and 40°). Statistically significant relations between top-plate filing angles and vibrations levels were also found for the front handle in the x and z axes and for the rear handle in the x and y axes.
2

Effect of the edge geometry in a cutting chain on the chain saw vibration level

100%
Stempski W., Jablonski K., Wegner J.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2010
|
tom 09
|
nr 1
Vibration levels were measured while cross-cutting pine wood logs. In the experiment five chisel type cutting chains, with a 0.325” pitch were used. The chains differed in the top-plate filing angle which had the following values: 20º, 25º, 30º, 35º and 40º. The cross-cutting was performed by a chain saw operator. The measurements were carried out on the front and rear handles in the x, y and z axes. There were 18 measurements for each top-plate filing angle on each of the handles. The Robotron M1300 meter was used. Considerably higher vibration levels were observed on the rear handle. The effect of the top-plate filing angle on the mechanical vibrations was statistically significant. The correlation between the angle and the vibration value showed a weak relation, but it was statistically significant in those cases in which it appeared.
3

Effect of shoe guide design on characteristic of centrifugal clutch in the chain saw

100%
Wiesik J.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
3-8
4

Effect of geometric parameters of the cutting link on blunting dynamics of chipper chain saws

100%
Stempski W.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2003
|
tom 02
|
nr 1
5

Engine power losses on resistance of chain saw motion over the guide

88%
Gendek A., Oktabinski P.
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
|
2012
|
nr 60 Agric.Forest Eng.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Test of pure rape-seed oil suitability for lubrication of cutting system of chainsaw

88%
Maciak A., Kubuska M.
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
|
2017
|
nr 69
7

Attempt at development of simulation method for evaluation of real time work of the chain saw during pine logging

75%
Sztyber J. F.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
69-73
8

Classical and order statistics of effective active time of felling at use chainsaw

75%
Glazar K., Bocianowski J.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2012
|
tom 11
|
nr 2
The time, within which accordingly to its application machine works, and an object of work and working groups are under load,is the effective active time. The purpose of the research was the classical and order statistics of effective active time of felling at use chainsaw. The average effective active time of felling of one tree was about 2 s. The cut trees were strong statistical diversified from the point of view of effective active time of felling. The positive skewness coefficient has confirmed, that statistical units with value of feature below arithmetic mean were prevailed – right-sided asymmetry.
9

Identification of sources of vibration hazards during exploitation of the electric chain saw

75%
Gorski J., Skarzynski J.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
27-34
10

Influence of clutch technical condition on working effects of the chain saw

75%
Gendek A.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
9-13
11

Effective active time of limbing and conversion at chainsaw use in selected technology and habitat variants

75%
Glazar K.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2014
|
tom 13
|
nr 2
The time within which, accordingly to its application, machine works, and an object of work and working groups are under load, is the effective active time. The purpose of the research was the order statistics of effective active time of limbing and conversion at chainsaw use in two technology and two habitat variants. The effective active time of limbing and conversion of one tree was most frequently from 0.5 s to 10.49 s in variant in which the limbing included tree crowns and only thicker branches cutting and the conversion included rods meant for chipping. The strong tree’s branching in fresh mixed coniferous forest had influence on the prolonged limbing time. The share of S2a assortment in total volume of harvested wood had influence on the conversion time, besides the number of wood assortment cutting.
12

Effect of carburetor fuel dose adjustment and air filter cleanness on carbon monoxide content in exhaust gases of the chain saw

75%
Kozlowski R.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
61-68
13

Causes of defects of power chainsaws

75%
Pilarek Z., Mielnicki P.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2008
|
tom 07
|
nr 4
45-54
14

Order statistics of effective active time of limbing and conversion at use chainsaw

75%
Glazar K.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2013
|
tom 12
|
nr 1
The time within which, accordingly to its application, machine works, and an object of work and working groups are under load, is the effective active time. The purpose of the research was the order statistics of effective active time of limbing and conversion at chainsaw use. The removed trees were moderately diversified from the point of view of effective active time of limbing and conversion. The negative skewness coefficient qualified the distribution of effective active time of limbing and conversion  as weak left-side asymmetry in variant 1 (the limbing included cutting of trees’ crowns and all branches). The positive skewness coefficient qualified the distribution of effective active time of limbing and conversion as weak right-side asymmetry in variant 2 (limbing included cutting of tree crowns and only thicker branches).
15

Effect of wear of saw chain cutters on the rate of wood cutting

75%
Maciak A.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
21-26
16

Rate of processing and vibration level in the electric chain saw

75%
Gorski J., Skarzynski J.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
35-41
17

Effect of saw chain design on vibrations emitted by chain saws

75%
Wojcik K.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
43-49
18

Attempt at application of vibroacoustic method in evaluation of technical condition of the chain saw

75%
Skarzynski J.
Annals of Warsaw Agricultural University. Agriculture
|
2000
|
nr 36 Agric.Forestry Eng.
51-59
19
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of chain saw pitch on vibration level on the internal combustion chain saw handles during cross cutting of wood

75%
Skarzynski J., Pietrkiewicz P.
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
|
2013
|
nr 61 Agric.Forest Eng.
Effect of chain saw pitch on vibration level on the internal combustion chain saw handles during cross cutting of wood. Results of investigations on the efect of chain saw pitch on the vibration level recorded on the internal combustion chain saw handles are presented. The investigations can contribute to learning of factors that intensify vibrations existing during cross cutting of wood with the use of chain saws of different pitch values; they can be also a source of practical instructions for the sawmen-operators of internal combustion chain saws to reduce the hazard of mechanical vibrations. Basing on the results of investigations one can find that the chain saw pitch affects vibration level on the machine handles; it increases along with an increase in the pitch.
20

Exhaust gases emitted by professional chain saws

75%
Wojcik K.
Annals of Warsaw Agricultural University. Agriculture
|
2005
|
nr 47 Agric.Eng.
11-19
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