Impact of cutting speed and feed rate for cross cutting with saw chains

Abstract

This article examined the impact of cutting speed and feed rate on the process of cross cutting with a saw chain. Three cutting speeds and three feed rates were chosen, and their impact on energy intensity was evaluated. The measurements were performed on an experimental device, on which it is possible to set the rpm (cutting speed) and the feed rate into the section using frequency converters. The cutting speed influences the resulting energy efficiency, at a cutting speed (vc) of 5.02 m × s-1 the resulting power (P) was 485 W. With increasing speed the cutting power increased, where the maximum value of P was 619 W at a cutting speed of 6.81 m × s-1. At a feed rate of 0.286 m × min-1 the cutting power was 376 W, with increasing cutting speed the cutting power (P) also increased almost linearly up to the value of 695 W at a feed rate (vf) of 0.857 m × min-1. The results showed that the cutting speed and the feed rate have a clear influence on the process of cross sawing with a saw chain.

Battery- and Petrol-Powered Chainsaws: An Investigation of Productivity in Conifer Thinning

“…Another factor that may affect and increase cutting time, as stated by Neri et al [28] under controlled conditions, is the presence of wood defects, such as knots, which, with their higher wood density, may worsen chainsaw performance [30,31]. This effect is most significant in conifer species such as Douglas fir and black pine, but it was not investigated in this study.…”

“…Summary of all daily productivities (gross, net, felling, and processing, and chainsaw "in use") with mean, maximum, minimum, and SD values for each chainsaw model (B = battery MSA220 C-B; P = petrol MS201 C-M). Another factor that may affect and increase cutting time, as stated by Neri et al [28] 307 under controlled conditions, is the presence of wood defects, such as knots, which, with 308 their higher wood density, may worsen chainsaw performance [30,31]. This effect is most 309 significant in conifer species such as Douglas fir and black pine, but it was not investigated 310 Considering the sub-sample of 54 out of 131 trees homogeneous in terms of DBH distribution, the performance analysis of the B and P chainsaws, in relation to the volume of each tree during the chainsaw "in use" phases, showed no significant difference (Figure 2).…”

Design solution for a device to determine the energy consumption of sawing wood with chain saws

“…PEER-REVIEWED ARTICLE bioresources.com Kuvik et al (2024). "Chain saw energy consumption," BioResources 19(1), 1316-1329.…”

“…A cutting device with a saw chain is a source of vibration and noise during its operation. The solution to the mentioned requirements may require innovation and adaptation of saw chain mechanisms to new working conditions (Krilek et al2023;Kuvik et al 2017Kuvik et al , 2021Antonić 2023;Maciak 2017). For the functionality of chainsaws, it is possible to provide different types of motor drives, such as electric motors, combustion, pneumatic, or hydraulic motors.…”

Comparing the Productivity of the Latest Models of Li-Ion Battery and Petrol Chainsaws in a Conifer Clear-Cut Site

“…To date, studies carried out on battery-powered chainsaws have been concerned mainly with the evaluation of the operator's exposure to noise and vibrations under controlled conditions [3,6,14], but few studies have investigated the productivity and the reliability of battery-powered chainsaws in regular forestry operations [7,25]. In terms of performance, cutting efficiency is affected by several factors, such as the wood density, i.e., tree species, degree of wood contamination [26,27], moisture content, chain filing and type [28]. In particular, the higher the wood density, the higher the cutting force requirements.…”