CN114985295A - Automatic steel screening method based on stamping blanking width - Google Patents
Automatic steel screening method based on stamping blanking width Download PDFInfo
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- CN114985295A CN114985295A CN202210700397.XA CN202210700397A CN114985295A CN 114985295 A CN114985295 A CN 114985295A CN 202210700397 A CN202210700397 A CN 202210700397A CN 114985295 A CN114985295 A CN 114985295A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 88
- 239000010959 steel Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012216 screening Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 84
- 239000002994 raw material Substances 0.000 claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 235000012431 wafers Nutrition 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
- B07C5/12—Sorting according to size characterised by the application to particular articles, not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention relates to a steel automatic screening method based on stamping blanking width, which comprises the following steps: s1, numbering different products; s2, obtaining the width specifications of each grade of material required by the blanking of products with different numbers; s3, generating utilization rate databases of products with different numbers under different material widths at all levels; s4, calculating the blank weights of the products with different numbers, and then obtaining the raw material weights required by the processing of the products with different numbers according to the order quantity of the products; s5, acquiring tonnage of raw materials required by scrapped products with different numbers in the production process; s6, acquiring the total steel consumption of all numbered products under different material width specifications; and S7, acquiring the material width specification corresponding to the minimum required total steel consumption as the blanking width of the ordered steel according to the required total steel consumption of all numbered products under the material width specification of each grade. The method and the device can effectively reduce the cost of raw materials by screening the blanking width of the steel.
Description
Technical Field
The invention relates to an automatic steel screening method based on stamping blanking width, which is mainly used for automatically screening the optimal material width specification during blanking of a shared material width so as to effectively improve the material utilization rate under a quantitative order, thereby reducing the raw material cost and improving the product profit.
Background
The existing belt pulley needs to manufacture steel coils into round pieces through a blanking process before stretching in a key stamping process, the material utilization rate of the steel coils with different width specifications for manufacturing the round pieces with different diameters is different, and the material utilization rate caused by the design scheme for manufacturing the round pieces with different diameters in the steel coils with the same specification is also different. According to the blanking rule of the punched round sheet, the material utilization rate of the blanking scheme of the round sheet embedded row plate is highest, the material width of a coil with the widest specification allowed by equipment within the safety limit of the equipment is customized in order to reduce the switching frequency of the steel coil on the shelf, and meanwhile, the material width of the next level with the widest material width is selected in order to consider the blanking of products under the same material width, wherein the blanking width of one sheet falling in the width mat direction in the row plate is taken as the material width of the next level.
Different products are influenced by different blanking diameters to generate the widest material width and the next-level material width in a plurality of safety limits, but steel mills have the requirement of the lowest starting weight for the specified material width, and the starting weight is generally more than 25 tons. When the fixed quantity of a single product is smaller than the lowest fixed quantity, the single product can only share the material width blanking with other products, and if the diameter difference of the products is large, the shared material width blanking causes low utilization rate of partial products, which is not beneficial to lean production.
Therefore, on the premise of meeting the demand of the order quantity of the product, the invention aims to design the automatic steel screening method based on the stamping blanking width, which can effectively screen out the optimal blanking width, thereby effectively reducing the cost of raw materials and improving the profit of the product.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an automatic steel screening method based on stamping blanking width, which can effectively solve the problems in the prior art.
The technical scheme of the invention is as follows:
an automatic steel screening method based on stamping blanking width comprises the following steps:
s1, numbering different products;
s2, calculating the widest material width of the products with different numbers under the blanking diameter according to the stamping embedded plates when the safety limit of the equipment is met, and calculating the material width of the next level to obtain the material width specifications of each level required by the product blanking with different numbers;
s3, respectively calculating the material utilization rate of products with different numbers under different material widths according to different material width specifications to generate a utilization rate database of products with different numbers under different material widths;
s4, calculating blank weights of products with different numbers according to the blanking diameters of the products, and then obtaining raw material weights required by processing the products with different numbers according to the order quantities of the products with different numbers, wherein the raw material weights are blank weights x customer order quantities;
s5, acquiring the tonnage of raw materials required by scrapped products with different numbers in the production process, wherein the tonnage of the raw materials required by scrapped products in the production process is equal to the weight x of the raw materials to produce a comprehensive scrapping coefficient;
s6, obtaining the total steel consumption required by all numbered products under different material width specifications,
wherein n is a product number to obtain the total steel consumption of all numbered products under the wide specification of each grade material;
and S7, acquiring the material width specification corresponding to the minimum required total steel consumption as the blanking width of the ordered steel according to the required total steel consumption of all numbered products under the material width specification of each grade.
After step S6 and before step S7, step S6.1 is further included, in which the difference steel amount of the total required steel amount of all the numbered products under each grade width specification is obtained, and the difference steel amount is the maximum value of the total required steel amount-the minimum value of the total required steel amount.
After step S6.1, a step S6.2 is further provided to obtain a maximum saving cost, which is the price of the steel in the market with the difference steel amount x.
The step S1 is to arrange the boards according to the size of the product blanking wafer by embedding the boards, select the largest width close to the safety limit of the equipment as the widest width, and select the blanking width of one less sheet in the direction of the wide mat in the arranging board as the next-stage width.
The comprehensive production scrap coefficient is 1.1-1.3.
Accordingly, the present invention provides the following effects and/or advantages:
1) the method comprises the steps of firstly, calculating the widest material width of products with different numbers under the condition of blanking diameter and meeting the safety limit of equipment and the material width of the next level according to a stamping embedded plate to obtain the material width specifications of the products with different numbers under the condition of blanking, and then calculating the material utilization rate of all the products with different numbers under the material width specifications of each level to form a material utilization rate database of products with different numbers under the material width of each level;
then calculating the weight of raw materials required by processing different products according to the order quantity, and calculating the scrapping loss in the production process to obtain the tonnage of the raw materials required after scrapping in the production process; dividing the tonnage of raw materials required after scrapping in the production process of all numbered products by the utilization rate of each numbered product under the same material width to obtain the steel consumption of all numbered products under the same material width, then adding the steel consumption of all numbered products under the same material width to obtain the required total steel consumption of all numbered products under the material width specification, and then sequentially obtaining the required total steel consumption of all numbered products under the material width specification;
finally, the material width specification corresponding to the minimum total steel consumption can be obtained through comparison, so that the steel with the material width specification is automatically selected as the blanking material width of the preferred ordered steel, and the advantages of reducing the raw material cost and improving the product profit are achieved.
2) The method can further compare and obtain the maximum value and the minimum value of the required total steel consumption, then the phase difference steel consumption can be obtained through the maximum value-the minimum value of the required total steel consumption, and then the phase difference steel consumption is multiplied by the price of market steel, so that the saved maximum cost can be obtained, and the cost difference value can be visually obtained.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention.
FIG. 2 is a schematic of the calculated data for the various steps of the present invention.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will now be described in further detail with reference to the embodiments thereof as illustrated in the accompanying drawings:
referring to fig. 1, an automatic steel screening method based on stamping blanking width includes the following steps:
s1, numbering different products, wherein the product number in the embodiment is A, B, C, D, E, F, G, H, I, Z;
s2, arranging the products according to the sizes of the blanked wafers of the products with different numbers by a mutually-embedded plate arranging rule, selecting the maximum material width close to the safety limit of the equipment as the widest material width, and selecting the blanking width of one less sheet in the width mat direction in the plate arranging as the next-stage material width so as to obtain the material width specifications of each stage required by the product blanking of different numbers;
in this embodiment, the next-stage material width of the product a is "1206", the widest material width is "1313", the next-stage material width of the product B is "1154", and the widest material width is "1257", and the product material width specifications of numbers a to Z are summarized in sequence according to this rule to obtain the 12-stage material width specifications of schemes 1 to 12 shown in fig. 2 and a;
s3, respectively calculating the material utilization rate of products with different numbers under different material widths according to different material width specifications to generate a utilization rate database of products with different numbers under different material widths;
if the utilization rate of the product A is 0.837 when the blanking width is 1206, the utilization rate of the product B is 0.799 when the blanking width is 1206 and the like, the material utilization rates of the products with different numbers under the specification material widths of all levels are collected in sequence to generate a utilization rate database of the products with the numbers A-Z under the specification material widths of 12 levels as shown in an area A and an area 2;
s4, calculating blank weights of products with different numbers according to the blanking diameters of the products, wherein in the embodiment, a blank weight calculation formula is (3.14x ((1/2 (blanking diameter)) < Lambda > 2) x steel plate thickness x7.85x (10^ -6), and then, the raw material weights required by processing the products with different numbers are obtained according to the order quantities of the products with different numbers, and the raw material weights are blank weights x customer order quantities;
s5, acquiring the tonnage of raw materials required by scrapped products with different numbers in the production process, wherein the tonnage of the raw materials required by scrapped products in the production process is equal to the weight x of the raw materials to produce a comprehensive scrapping coefficient;
the comprehensive production scrap coefficient is 1.1-1.3, and in the embodiment, the comprehensive production scrap coefficient is 1.2, and the comprehensive production scrap coefficient is selected according to the production characteristics of the product and the collected data and according to experience;
as shown in fig. 2 and B, the blank weight of the product a in this example is 0.310401987, the basis weight is 2000, the required raw material weight is 0.620803974, and the ton of raw material required after scrapping in the production process is 0.744964796; the blank weight of the product B is 0.283418363, the quantitative unit amount is 3000, the weight of the obtained required raw material is 0.850255088, and the tonnage of the obtained raw material after scrapping in the production process is 1.020306105; then, respectively obtaining the weight of the raw materials needed by the obtained products C-Z and the tonnage of the raw materials needed after being scrapped in the production process in sequence;
s6, acquiring the total steel consumption required by all numbered products under different material width specifications,
wherein n is a product number to obtain the total steel consumption of all numbered products under the wide specification of each grade material;
as shown in fig. 2 and C, the total steel consumption required by the products with product numbers a to Z in this embodiment under the material width specifications of each stage is obtained, for example, when the blanking width of the products with product numbers a to Z is 1206: the amount of steel used for product No. a (0.744964796/0.837) + the amount of steel used for product No. B (1.020306105/0.799) + the amount of steel used for product No. C (0.376516741/0.842) + the amount of steel used for product No. D (2.14846763/0.821) + the amount of steel used for product No. E (6.861317463/0.741) + the amount of steel used for product No. F (2.323427947/0.750) + the amount of steel used for product No. G (0.546664967/0.753) + the amount of steel used for product No. H (4.67157469/0.777) + the amount of steel used for product No. I (1.484794191/0.723) + the amount of steel used for product No. Z (1.73844216/0.742) ═ 28.72339927; respectively obtaining the total steel consumption of the products B-Z under the wide specification of each grade material according to the technical process;
s7, acquiring the material width specification corresponding to the minimum total steel consumption as the blanking width of the ordered steel according to the total steel consumption required by all numbered products under each grade material width specification;
as shown in fig. 2 and C, the material width specification for the minimum total steel consumption in this embodiment is scheme 8, that is, the blanking width is 1288, and the total steel consumption is 26.61104973.
After step S6 and before step S7, the present invention further includes step S6.1 of obtaining a difference steel amount of the total required steel amounts of all the numbered products under the respective grade width specifications, where the difference steel amount is the maximum value of the total required steel amounts-the minimum value of the total required steel amounts.
After step S6.1, the present invention further provides step S6.2, obtaining the maximum saving cost, which is the price of the steel in the market with the difference steel amount x.
As shown in fig. 2 and C, the amount of steel used for phase difference in this embodiment is 35.0028744-26.61104973-8.391824669, and the price of steel in market is 6000/T, and the maximum saving cost is 50350.95 yuan.
Claims (5)
1. A steel automatic screening method based on stamping blanking width is characterized in that: comprises the following steps:
s1, numbering different products;
s2, calculating the widest material width and the next-stage material width of products with different numbers under the blanking diameter according to the stamping embedded plate, wherein the widest material width and the next-stage material width meet the safety limit of equipment, so as to obtain the material width specifications of each stage required by the blanking of the products with different numbers;
s3, respectively calculating the material utilization rate of products with different numbers under different material widths according to different material width specifications to generate a utilization rate database of products with different numbers under different material widths;
s4, calculating blank weights of products with different numbers according to the blanking diameters of the products, and then obtaining raw material weights required by processing the products with different numbers according to the order quantities of the products with different numbers, wherein the raw material weights are blank weights x customer order quantities;
s5, obtaining the tonnage of raw materials required by scrapped products with different numbers in the production process, wherein the tonnage of the raw materials required by scrapped products in the production process is equal to the weight x of the raw materials to produce a comprehensive scrapping coefficient;
s6, acquiring the total steel consumption required by all numbered products under different material width specifications,
wherein n is a product number to obtain the total steel consumption of all numbered products under the wide specification of each grade material;
and S7, acquiring the material width specification corresponding to the minimum total steel consumption as the blanking width of the ordered steel according to the total steel consumption required by all the numbered products under the material width specification of each grade.
2. The automatic steel screening method based on the stamping blanking width as claimed in claim 1, wherein the method comprises the following steps: after step S6 and before step S7, step S6.1 is further included, in which the difference steel amount of the total required steel amount of all the numbered products under each grade width specification is obtained, and the difference steel amount is the maximum value of the total required steel amount-the minimum value of the total required steel amount.
3. The automatic steel screening method based on the stamping blanking width as claimed in claim 2, wherein the method comprises the following steps: after step S6.1, a step S6.2 is further provided to obtain a maximum saving cost, which is the price of the steel in the market with the difference steel amount x.
4. The automatic steel screening method based on the stamping blanking width as claimed in claim 1, wherein the method comprises the following steps: the step S1 is to arrange the wafers according to the size of the wafer to be blanked, and select the largest width of the wafers close to the safety limit of the equipment as the widest width of the wafers, and select the width of the wafers in the row with less wafers in the direction of the wide mat as the width of the next stage.
5. The automatic steel screening method based on the stamping blanking width as claimed in claim 1, wherein the method comprises the following steps: the comprehensive production scrap coefficient is 1.1-1.3.
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