A shear control method for taking multiple samples from a large plate

Abstract

The present invention discloses a shearing control method for taking multiple samples on a large plate, comprising the following steps: 1) receiving all the sample samples under a large sample; 2) calculating the length of each waste section on the large sample; 3) dividing and judging the length of each waste section until the length of the waste is less than or equal to the longest shear limit; 4) dividing and judging the length of the last waste section, if the length of the waste is less than the width of the pressure plate of the sample shear, then adding the length of the previous waste section and the length of the last waste section and taking the integer in half as the length of the waste section; 5) defining the attributes of each sheared plate and generating a shearing schematic diagram. The present invention minimizes the number of shearing knives, prolongs the service life of the shear blade in the machine, and realizes intelligent shearing of sample plates.

Description

Technical Field

[0001] The present invention relates to a shearing method for a sample steel plate, and more particularly to a shearing control method for taking a plurality of samples from a large plate. Background Art

[0002] Medium and thick plates have many specifications and are used in a wide range of fields. To ensure product quality, steel plates must undergo strict quality inspections before leaving the factory. The content of quality inspections mainly includes the chemical composition, mechanical and process properties, external dimensions, surface and internal quality of the steel plates. Some products also need to undergo welding performance and processing performance inspections according to order requirements. For thick plate sample shearing area, it is located downstream of the logistics after the cut-to-length shear sample shearing. The cut-to-length shear cuts the large sample on the steel plate according to the planned instructions and sends it to the sample shearing area. The sample shear performs sample shearing operations on the large sample, cuts it into medium sample, and then transports it to the inspection laboratory.

[0003] The shearing position of the sample is based on the management requirements. A single sample is taken from the sample, or multiple samples are taken (i.e., multiple samples are taken from different positions on the sample). The existing sampling method is manual visual shearing, which is completely manual. There are risks of misoperation and safety hazards. In addition, the steel plate is dropped during shearing and waste collection, which leads to high noise in the factory and is harmful to the health of employees. Therefore, automation and intelligent transformation are required. Automated shearing requires a shearing model to minimize the number of shearing knives, extend the service life of the shear blade in the machine, avoid the shortest and longest sizes of shearing, and accurately locate the shearing position of the sample.

[0004] In existing patent applications, such as Chinese patent 201510227328.1, a method for sampling steel plates is disclosed. The sample includes a cutting surface and a cutting angle, which is characterized in that the method includes the following steps: the first step is to determine the sampling position on the sampling motherboard; the second step is to determine the size of the sample and mark it on the upper surface of the motherboard; the third step is to determine the cutting surface and the cutting angle. If there is only one cutting surface in a certain direction and the other surface is a boundary surface, the cutting angle of the cutting surface is specified to be equal to 90°; if there are two cutting surfaces in a certain direction, the cutting angle of one cutting surface is specified to be 90°, and the cutting angle of the other cutting surface is greater than 90°; if there are two cutting surfaces in a certain direction, the cutting angles of both cutting surfaces are specified to be greater than 90°; the fourth step is to sample according to the above parameters. The sample taken by this method will fall directly from the motherboard, and there will be no phenomenon of the sample being stuck in the sampling slot, which saves time and reduces the intensity of sampling work. However, this technology uses the cutting angle to ensure that the sampling steel plate can fall smoothly and will not get stuck on the steel plate. There is no cutting planning and automatic judgment. Summary of the invention

[0005] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a shearing control method for taking multiple samples on a large plate, so as to minimize the number of shearing knives, extend the service life of the shear blade in the machine, and realize intelligent shearing of the sample plate.

[0006] To achieve the above object, the present invention adopts the following technical solution:

[0007] A shear control method for taking multiple samples from a large plate comprises the following steps:

[0008] 1) Receive all the sample samples under one large sample;

[0009] 2) Calculate the length of each piece of waste material on the sample;

[0010] 3) The length of each section of the waste is evenly divided and determined until the length of the waste is less than or equal to the longest shear limit;

[0011] 4) The length of the last section of the waste is evenly divided and judged. If the length of the waste is less than the width of the pressure plate of the sample shear, the length of the previous section of the waste and the length of the last section of the waste are added together and half of the integer is taken as the length of the cut section of the waste;

[0012] 5) Define the properties of each section of cut plate and produce a cutting diagram.

[0013] Preferably, in the step 1), there are five shearing positions of the sample S(n) in the sample, namely S1, S2, S3, S4 and S5.

[0014] Preferably, the shearing position of the sample S1 is such that the distance from the plate head of the sample S1 to the plate head of the large sample is equal to the plate thickness of the large sample.

[0015] The shearing position of the sample S2 is a distance from the center of the sample to the head of the large sample, which is equal to 1 / 4 of the length L of the large sample.

[0016] The shearing position of the sample S3 is a distance from the center of the sample to the plate head of the large sample, which is equal to 1 / 2 of the length L of the large sample;

[0017] The shearing position of the sample S4 is the distance from the center of the sample to the plate head of the large sample, which is equal to a fixed value of 200 mm;

[0018] The shearing position of the sample S5 is that the distance from the center of the sample to the plate head of the large sample is equal to 3 / 4 of the length L of the large sample.

[0019] Preferably, in step 2), the waste material F(n) has 6 sections, namely F1, F2, F3, F4, F5 and F6, and the length of each section of the waste material F(n) is calculated as follows:

[0020] The length of the waste material F1 = 150 mm;

[0021] The length of the waste F2 = (1 / 4*L-1 / 2*S2)-(150+S1), in mm;

[0022] The length of the waste F3 = (1 / 2*L-1 / 2*S3)-(1 / 4*L+1 / 2*S2), unit: mm;

[0023] The length of the waste F4 = 400 mm;

[0024] The length of the waste F5 = (3 / 4*L-1 / 2*S5)-(1 / 2*L+1 / 2*S3), unit: mm;

[0025] The length of the waste F6 = L-(3 / 4*L+1 / 2*S5), in mm.

[0026] Preferably, if S(n) is 0, the length of two adjacent waste sections F(n)+F(n+1) is the length of one section of the waste F(n+1).

[0027] Preferably, in step 3), the longest shearing distance is limited to 750 mm.

[0028] Preferably, in step 4), the width of the pressure plate for cutting the sample is 200 mm.

[0029] The shearing control method for taking multiple samples from a large board provided by the present invention can judge and intelligently calculate all possibilities of taking multiple medium samples from all large samples, accurately locate the shearing position of the medium sample, and intelligently mark the positions of the samples and waste boards. It greatly improves labor production efficiency and realizes intelligent and unmanned operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of five shearing positions of a sample in a sample in the shear control method of the present invention;

[0031] Figure 2 It is a schematic flow chart of the shear control method of the present invention. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] The samples of 5 sections taken from a large plate and the related waste are as follows Figure 1 As shown, waste F1, sample S1 of the sample, waste F2, sample S2 of the sample, waste F3, sample S3 of the sample, waste F5, sample S5 of the sample, waste F6, waste F4, and sample S4 of the sample.

[0034] There are five shear positions of sample S(n) in the test specimen, namely S1, S2, S3, S4 and S5.

[0035] The shear position of the middle sample S1 is that the distance from the plate head of the middle sample to the plate head of the large sample is equal to the plate thickness of the large sample;

[0036] The shear position of the middle sample S2 is the distance from the center of the middle sample to the plate head of the large sample, which is equal to 1 / 4 of the length L of the large sample;

[0037] The shear position of the middle sample S3 is the distance from the center of the middle sample to the plate head of the large sample, which is equal to 1 / 2 of the length L of the large sample;

[0038] The shear position of the middle sample S4 is the distance from the center of the middle sample to the plate head of the large sample, which is equal to a fixed value of 200 mm;

[0039] The shearing position of the middle sample S5 is such that the distance from the center of the middle sample to the plate head of the large sample is equal to 3 / 4 of the length L of the large sample.

[0040] L is the length of the specimen.

[0041] The length of the sample S(n) in the sample is obtained from the on-site management system. According to the length of the sample S(n) in the sample, the sampling position and the length of the large sample L, the length of each section of waste is calculated. The specific calculation formula is as follows:

[0042] The length of waste F1 = 150mm, the shortest limit of the sample shear is 150mm, so the plate thickness of the sample can only be the shortest limit;

[0043] Length of waste F2 = (1 / 4*L-1 / 2*S2)-(150+S1), unit: mm;

[0044] Length of waste F3 = (1 / 2*L-1 / 2*S3)-(1 / 4*L+1 / 2*S2), unit: mm;

[0045] Length of waste F4 = 400 mm;

[0046] The length of waste F5 = (3 / 4*L-1 / 2*S5)-(1 / 2*L+1 / 2*S3), unit: mm;

[0047] The length of the waste F6 = L-(3 / 4*L+1 / 2*S5), unit: mm.

[0048] The number of samples taken each time is not always 4, so the position of the defective sample is defined as 0 in the corresponding sample. If S(n) is 0, the two adjacent waste sections F(n)+F(n+1) are the length of one section of waste F(n+1).

[0049] The scrap F(n) is cut according to the maximum width (750mm) each time, and the length of the last scrap of the large board is judged to be greater than the last length limit (200mm):

[0050] If it is greater than 200mm, it will be cut according to the current cutting point as the maximum width (750mm);

[0051] If it is less than 200mm, add the length of the previous section of waste and the length of the last section of waste and take the integer in half as the cutting length of the previous section of waste.

[0052] Combination Figure 2 As shown, the present invention provides a shear control method for taking multiple samples on a large plate, comprising the following steps:

[0053] 1) Receive 5 sample samples from a large sample, and name the sample samples marked with the corresponding length when the shear length is the length of the sample medium plate, corresponding to the sample number in the system, and the rest are waste plates;

[0054] 2) Calculate the length of each scrap piece on the sample, and evenly distribute the scrap shearing to a length not greater than the longest shearing length;

[0055] 3) The length of each piece of waste is evenly divided and judged until the length of the waste is less than or equal to the longest shear limit (750mm);

[0056] 4) The length of the last section of waste is evenly divided and judged. If the length of the waste is less than the width of the pressure plate for cutting the sample (200mm), the length of the previous section of waste and the length of the last section of waste are added together and the integer is taken as the length of the cut section of waste;

[0057] 5) Define the properties of each section of cut plate and produce a cutting diagram.

[0058] In step 1), there are five shearing positions of sample S(n) in the sample, namely S1, S2, S3, S4 and S5.

[0059] The shear position of the middle sample S1 is that the distance from the plate head of the middle sample to the plate head of the large sample is equal to the plate thickness of the large sample;

[0060] The shear position of the middle sample S2 is the distance from the center of the middle sample to the plate head of the large sample, which is equal to 1 / 4 of the length L of the large sample;

[0061] The shear position of the middle sample S3 is the distance from the center of the middle sample to the plate head of the large sample, which is equal to 1 / 2 of the length L of the large sample;

[0062] The shear position of the middle sample S4 is the distance from the center of the middle sample to the plate head of the large sample, which is equal to a fixed value of 200 mm;

[0063] The shearing position of the middle sample S5 is such that the distance from the center of the middle sample to the plate head of the large sample is equal to 3 / 4 of the length L of the large sample.

[0064] L is the length of the specimen.

[0065] In step 2), the waste F(n) has 6 segments, namely F1, F2, F3, F4, F5 and F6, and the length of each segment of the waste is calculated as follows:

[0066] The length of waste F1 = 150mm, the shortest limit of the sample shear is 150mm, so the plate thickness of the sample can only be the shortest limit;

[0067] Length of waste F2 = (1 / 4*L-1 / 2*S2)-(150+S1), unit: mm;

[0068] Length of waste F3 = (1 / 2*L-1 / 2*S3)-(1 / 4*L+1 / 2*S2), unit: mm;

[0069] Length of waste F4 = 400 mm;

[0070] The length of waste F5 = (3 / 4*L-1 / 2*S5)-(1 / 2*L+1 / 2*S3), unit: mm;

[0071] The length of the waste F6 = L-(3 / 4*L+1 / 2*S5), unit: mm.

[0072] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A shear control method for taking multiple samples from a large plate, It is characterized in that The following steps are involved: 1) Receive all the sample samples under one large sample; 2) Calculate the length of each piece of waste material on the sample; 3) The length of each section of the waste is evenly divided and determined until the length of the waste is less than or equal to the longest shear limit; 4) The length of the last section of the waste is evenly divided and judged. If the length of the waste is less than the width of the pressure plate of the sample shear, the length of the previous section of the waste and the length of the last section of the waste are added together and half of the integer is taken as the length of the cut section of the waste; 5) Define the properties of each cut plate and produce a cutting diagram. In the step 1), there are five shearing positions of the sample S(n) in the sample, namely S1, S2, S3, S4 and S5. The shearing position of the sample S1 is such that the distance from the plate head of the sample S1 to the plate head of the large sample is equal to the plate thickness of the large sample. The shearing position of the sample S2 is a distance from the center of the sample to the head of the large sample, which is equal to 1 / 4 of the length L of the large sample. The shearing position of the sample S3 is a distance from the center of the sample to the plate head of the large sample, which is equal to 1 / 2 of the length L of the large sample; The shearing position of the sample S4 is the distance from the center of the sample to the plate head of the large sample, which is equal to a fixed value of 200 mm; The shearing position of the sample S5 is that the distance from the center of the sample to the plate head of the large sample is equal to 3 / 4 of the length L of the large sample.

2. The shear control method for taking multiple samples from a large plate according to claim 1, Features: In the step 2), the waste material F(n) has 6 sections, namely F1, F2, F3, F4, F5 and F6, and the length of each section of the waste material F(n) is calculated as follows: The length of the waste material F1 = 150 mm; The length of the waste F2 = (1 / 4*L-1 / 2*S2)-(150+S1), in mm; The length of the waste F3 = (1 / 2*L-1 / 2*S3)-(1 / 4*L+1 / 2*S2), unit: mm; The length of the waste F4 = 400 mm; The length of the waste F5 = (3 / 4*L-1 / 2*S5)-(1 / 2*L+1 / 2*S3), unit: mm; The length of the waste F6 = L-(3 / 4*L+1 / 2*S5), in mm.

3. The shear control method for taking multiple samples from a large plate according to claim 2, Features: If S(n) is 0, the length of two adjacent waste sections F(n)+F(n+1) is the length of one section of the waste section F(n+1).

4. The shear control method for taking multiple samples from a large plate according to claim 1, Features: In step 3), the longest shearing length is limited to 750 mm.

5. The shear control method for taking multiple samples from a large plate according to claim 1, Features: In the step 4), the width of the pressing plate for cutting the sample is 200 mm.

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