Э. К. Идрисова бас редактордың орынбасары, ету оқу және ғылыми қызмет
Еуразия технологиялық университетінің Хабаршысы. 2021. №2
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Вестник-№2-2021
| Еуразия технологиялық университетінің Хабаршысы. 2021. №2
7 and plungers of the 16 stabilisation cylinders consist of the idle H I b and the working HR moves. The calculation uses the maximum possible working stroke depending on the longest length of the blank 1, which can be placed and pressed from the accepted container length. The total volume of WS inner cavities of all WSi stabilization cylinders (WS= WSi ) released only during running time must be equal to the maximum volume of WA free inner cavity 70, 71 in the cylinder sub. W A = W S ; W A = F A H A ; F A H A = F S H R (1) where: W A - the cross-sectional area of the sub-cylinder; F A - the cross-sectional area; F S - the cross-sectional area of all stabilization cylinders; H A - the length of the working cavity of the sub-cylinder; Н R - the value of the maximum operating stroke of the stabilising cylinder plunger. K W is defined by: К W = V К /V ПР =( H К / W )/(H ПР / W ) = H K / H ПР (2) where: Н К - the value of the movement of the container; Н ПР - the value of the movement of the pressure-stamp; W - the working-time. The working stroke of the container H К is equal to the working stroke of the crosspiece Н T , therefore it is equal to the working stroke of the stabilisation cylinder plungers Н R . K W = Н R /(Н R -H A ) (3) Thus, in order to obtain a given К W ratio over the entire operating stroke length of the internal free cavity 70, 71 cylinders of the subscription must be: H A = Н R /(1-1/K W ) (4) By substituting the expression (4) for the expression (1), the necessary ratio is obtained between the cross-sectional area F A of the cylinder of the substrate and the total cross-sectional area of the F s of all stabilization cylinders: F S Н R = F S Н R /(1-1/K W ) (5) F S = F A (1-1/K W ) (6) Modern pressing is no longer conceivable without complete automation of the process. Increased expiry rates at PAFF allow for a significant reduction in compression time. At the same time, press productivity growth is constrained by a high proportion of the press time, which accounts for about half of the press cycle. Almost half of the auxiliary time is spent transferring the matrix through the container after the operation of the release of the pressure residue. An analysis of the available data showed that the most efficient way to address this problem was to use elastic tool designs. The construction of such structures is inexpensive and can be installed on any existing press. [3] |