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Experimental studies of the influence of wood species and grinding modes on the roughness of the obtained surface were carried out. It is investigated that the type of wood also affects the magnitude of the irregularities of the surface to be treated, namely the magnitude of the roughness of the treated surface is inversely proportional to the density of the treated material. Regression models are obtained, which characterize the roughness of the surface of oak and spruce wood depending on the cutting speed and the specific pressure of pressing. It is established that the cutting speed has a positive effect on the roughness of the treated surface. This is due to the fact that at high cutting speeds wood fibers (especially relevant for hardwoods with higher density) show proper support to the cutter and do not have time to break under its pressure, and cut with a cutter before it breaks their connection with neighboring fibers. Therefore, the purity of the treated surface will be better. It is established that with the increase of cutting speed from 10 to 30 m / s by grinding skin of oak wood surface roughness decreases by 40-60%, and spruce - by 44-86%. Spruce has a 10-20% roughness dynamics than oak. It was found that with the increase of the specific pressure of pressing the part to the sanding skin on the surface of oak wood, the surface roughness increases by 20-30%, and the surface of spruce wood - by 12-32%. In spruce, the deterioration of roughness is 12-13% greater than in oak. It is established that with the increase of the feed rate on the surface of oak wood the surface roughness increases by 21-30%, in spruce - by 13.63-23.46%. In spruce deterioration of roughness by 9-13% more than in oak. To carry out effective grinding to obtain a quality surface (such as oak and spruce), the following input values are recommended: cutting speed 20-30 m / s; feed speed 6-8 m / min; specific clamping force 2.2-4.4 kPa; grain size of skins: P180-P150; P120-P100; P90-P60.
Experimental studies of the influence of wood species and grinding modes on the roughness of the obtained surface were carried out. It is investigated that the type of wood also affects the magnitude of the irregularities of the surface to be treated, namely the magnitude of the roughness of the treated surface is inversely proportional to the density of the treated material. Regression models are obtained, which characterize the roughness of the surface of oak and spruce wood depending on the cutting speed and the specific pressure of pressing. It is established that the cutting speed has a positive effect on the roughness of the treated surface. This is due to the fact that at high cutting speeds wood fibers (especially relevant for hardwoods with higher density) show proper support to the cutter and do not have time to break under its pressure, and cut with a cutter before it breaks their connection with neighboring fibers. Therefore, the purity of the treated surface will be better. It is established that with the increase of cutting speed from 10 to 30 m / s by grinding skin of oak wood surface roughness decreases by 40-60%, and spruce - by 44-86%. Spruce has a 10-20% roughness dynamics than oak. It was found that with the increase of the specific pressure of pressing the part to the sanding skin on the surface of oak wood, the surface roughness increases by 20-30%, and the surface of spruce wood - by 12-32%. In spruce, the deterioration of roughness is 12-13% greater than in oak. It is established that with the increase of the feed rate on the surface of oak wood the surface roughness increases by 21-30%, in spruce - by 13.63-23.46%. In spruce deterioration of roughness by 9-13% more than in oak. To carry out effective grinding to obtain a quality surface (such as oak and spruce), the following input values are recommended: cutting speed 20-30 m / s; feed speed 6-8 m / min; specific clamping force 2.2-4.4 kPa; grain size of skins: P180-P150; P120-P100; P90-P60.
The paper analyzes a new method of calculating additional losses of working time in sequential layout systems, considers the problem of applying modern methods of calculating automated production systems to improve the efficiency of woodworking enterprises. The influence of stochastic factors on the stability of technological operations is analyzed. Additional imposed losses of working time significantly reduce the efficiency of production systems as a whole. In the woodworking industry, technological operations have little stability, so the imposition of loss of working time is particularly pronounced. The actual performance of automated lines is significantly reduced. Improving the productivity of technological lines is performed by developing optimal equipment layout schemes, structural and parametric optimization. An important task is to calculate the component costs of the production process and losses of working time in order to improve production efficiency and manufacture quality products. Existing methods for estimating the imposition of loss of working time are approximate and suitable only for production systems with the same sites. In the case of a large number of consecutive production sites with different nominal productivity, an approximate estimate of the loss of working time is performed using the appropriate calculations used for the two sites. In subsequent calculations, a conditional section is created, which interacts with the next section, the parameters of the new section are calculated and so the calculation is carried out to the end of the production line. For complex production systems, simulation of line operation is performed.
The analysis of a condition of a question is made the facades of furniture doors of case products are analyzed. Structural components for the creation of facade furniture doors are analyzed. Designs of front furniture doors for research are developed. Modern materials for selection of three variants of facade furniture doors are selected and calculated. A method of comparative research of technological processes of obtaining furniture doors with different components and components has been developed. Technological operations during creation of front furniture doors of the accepted kind of researches are offered. Modern equipment for technological operations during the creation of facade furniture doors of the accepted type of research has been selected. Technological routes have been developed and plans of shops with selection of the accepted equipment for creation of three Varieties of front doors are constructed. The accepted equipment is calculated and its analysis by price is made and the total cost for creation of three Varieties of front furniture doors is analyzed. Production staff was selected and their number was analyzed to create three types of facade furniture doors. The comparative analysis of technological processes is made and the rational Variety on creation of front furniture doors of the accepted design is chosen. The indicators of economic efficiency for all Varieties in the manufacture of facade doors are calculated and confirmed by rational numerical indicators. It is established that the option of making door furniture facades from a furniture board is the most cost-effective, ie effective for implementation in production, as it has: the lowest or lowest cost among all three Different types (6758.23 / 12000 = 563.19 UAH .); acceptable, ie the lowest price (7974.71 / 12000 = UAH 664.60); the smallest investments (4796.57 thousand UAH); the minimum payback period of investment costs is 3.94 years.
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