ISO 6531 pdf download.Machinery for forestry — Portable hand-held chain-saws — Vocabulary
1 Scope
This International Standard defines terms relating to mechanical aspects for portable hand-held chain-saws, chains and guide bars. It does not deal with technical data, which are covered by ISO 6532.1)
2 Definitions
NOTE Chain-saw positions are shown in annex A. 2.1 Work functions 2.1.1 felling separating a standing stem from the root system 2.1.2 delimbing removing branches from trees or parts of trees 2.1.3 bucking slashing cutting, felled or uprooted trees or parts of trees into lengths 2.1.4 splitting dividing trees or parts of trees longi- tudinally into pieces 2.1.5 boring process of cutting with the saw chain (2.3.1) at the nose (tip) of the guide bar (2.3.5) in order to make a hole 2.1.6 kickback rapid upward and/or backward motion of the chain-saw (2.2.1) which can occur when the moving saw chain (2.3.1) near the tip of the guide bar (2.3.5) contacts an object such as a log or branch 2.2 Types of chain-saws 2.2.1 chain-saw power driven tool designed to cut wood with a saw chain (2.3.1) and consisting of an integrated compact unit of handles, power source and cutting attachment, designed to be supported with two hands 2.2.1.1 chain-saw for forest work chain-saw (2.2.1) designed for forest work such as felling, delimb- ing and bucking See figure 1. 2.2.1.2 chain-saw for tree service specially designed chain-saw (2.2.1) with a limited power source intended for the use by trained tree service workers only when working up in trees See figure 2.
2.3.2 chain guides plates or guides ftted on one or both sides of the guide bar (2.3.5) where the saw chain (2.3.1) enters the groove, for assisting in guiding the saw chain (2.3.1) between the drive sprocket (2.3.3) and the guide bar (2.3.5) 2.3.3 drive sprocket chain drive wheel with teeth 2.3.3.1 rim sprocket drive sprocket (2.3.3) with rims on which the side and cutter links run 2.3.3.2 spur sprocket drive sprocket (2.3.3) in which the . drive links run and the side and cut- ter links are supported 2.3.4 nose sprocket rotating part at the tip of the guide bar (2.3.5), and which supports the saw chain (2.3.1) around the tip 2.3.5 guide bar part that supports and guides the saw chain (2.3.1) See figure 5.
2.3.6. chain pitch arithmetic mean of two distances between three adjacent rivets See dimension x/2 in figure 4. 2.3.7 cutting length (saw with removable or without spiked bumper (2.9.5)distance from the foremost edge of the ma- chine housing, along the guide bar (2.3.5) axis to the outside edge of the cutting link, or on the inside part of the bar tip guard (2.4.4) with the chain tension adjuster (2.5.1) set . at mid-position See figure 6. 2.3.8 cutting length (saw with permanently fixed spiked bumper (2.9.5) distance from the root (base) of the spiked bumper (2.9.5)，along the guide bar (2.3.5) axis to the outside edge of the cut- ting link, or on the inside part of the bar tip guard (2 .4.4) with the chain tension adjuster (2.5.1) set at mid- position See figure 6.