Contents
BS ISO 9518:2018
ISO 9518:2018
Page
Foreword ....................................................................................................................................................................................... iv
1 Seo
pe
..................................................................................................................................................................... 1
2 Normative references ...................................................................................................................................... 1
3 Terms
and
definitions
..................................................................................................................................... 1
4 Test method ........................................................................................................................................................
2
4.1
Principles
................................................................................................................................................................
2
4.2 Chain-saw configuration
..................................................................................................................................
2
4.2.1 General ...................................................................................................................................................
2
4.2.2 Chain-saw families ............................................................................................................................
3
4.2.3 Requirements for testing bars and saw-chains ..................................................................... 3
4.3 Equipment
and
materials to
determine CKA
...........................................................................................
3
4.4
Preparation ............................................................................................................................................................
3
4.4.1 General ................................................................................................................................................... 3
4.4.2 Physical measurements of chain-saw ........................................................................................ 4
4.4.3 Dimensional measureinents .......................................................................................................... 4
4.4.4
Chain-saw and saw-chain preparation ..................................................................................... 5
4.4.5
Kickback machine preparation
....................................................................................................
7
4.4.6
Chain-saw
installation and alignment..
.....................................................................................
7
4.4.7 Balance saw /clamp/cradle assembly ........................................................................................ 7
4.4.8 Horizontal f
r
iction measurements ............................................................................................. 8
4.4.9 Rotary friction measurements ..................................................................................................... 9
4.4.10
Horizontal & rotary
restraining
systems alignment ........................................................ 10
4.4.11 Impact velocity
adjustment ........................................................................................................ 12
4.5 Test requirements and procedures ........................................................................................................... 13
4.5.1 Test requiren1ents ........................................................................................................................... 13
4.5.2 Kickback testing procedure ........................................................................................................ 15
4.5.3 Kickback energy determination ................................................................................................ 15
4.5.4 Termination of test sequenoe .................................................................................................... 16
4.5.5 Chain brake energy determination .......................................................................................... 16
4.5.6 Chain brake actuation angle measurement
.........................................................................
20
4.5. 7 Chain brake stopping
time
measurement..
...........................................................................
21
4.6
Kickback angle computation
........................................................................................................................ 21
4.6.1 General ................................................................................................................................................ 21
4.6.2 Input data ........................................................................................................................................... 21
4.6.3 Computation and results ............................................................................................................. 22
5 Test report ........................................................................................................................................................ 2 2
Annex A (normative) Computer program flowchart ........................................................................................ 23
Annex B (normative) Procedure for hardness testing of Medium Density Fibreboard (MDF) ......... 34
Annex C (informative) Test record ......................................................................................................................... 3 6
Annex D (informative) Chain-saw centre of gravity and inertia measurement ..................................... 39
Annex E (informative) Computer program checkout models ....................................................................... 45
Bibliography ................................................................................................................................................................. 53
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