JPS61139741A - Method for forming material test piece - Google Patents

Abstract

PURPOSE:To enable the concentration and synchronization of a test piece forming process, by processing each test piece in such a state that an uncut part is partially left between a base material and said test piece and applying finishing processing to the test pieces collectively recovered by punching separation to form each test piece. CONSTITUTION:The information of the history relating to a product with respect to a base material 1 to be tested is printed out on a bar code label and the printed label is adhered to the base material to be tested. Various processings corresponding to the shape of a test piece are collectively performed in a molding process and various test pieces are held to the base material so as to leave an uncut part to a part of each test piece. Next, the base material 1 is sent to a separation and recovery process and each test piece is individually punched and separated from the base material by a press and the separated test pieces 3-7 are collectively recovered in an exclusive recovery pallet 8. Subsequently, the test pieces are sent to a finishing process where processing such as burr removal, polishing or notch processing is individually applied to each test piece to finish each test piece having a predetermined shape. In this finishing process, each test piece is also handled as a group unit and a method for processing each test piece while taking out the same from the pallet 8 and again returning the processed test piece to the pallet 8 is employed.

Description

[Detailed description of the invention] [Technical field to which the invention pertains]

This invention is mainly aimed at material manufacturers such as steel mills, in order to perform material property evaluation tests on manufactured material products. , I! Bending once. This invention relates to a method of manufacturing a material test piece, which is manufactured by processing a test piece used in various property evaluation tests such as impact.

[Prior art and its problems]

In order to guarantee the characteristics of the material products they produce, the metal material manufacturers listed above generally submit data from various material property evaluation tests related to their products to users. On the material manufacturer's side, the product in the manufacturing process is used as the base material to be tested, a portion of this product is extracted to obtain the test base material, and this test base material is processed to measure tensile strength and hardness. It is difficult to produce test pieces for use in various property evaluation tests such as bending and impact, and to conduct each material property test based on these test pieces to obtain evaluation data. In this case, the shape of each test piece is specified in a specific shape by the JI5 standard for each test item. Note that the characteristic testing method for each item is well known, and its explanation will be omitted here. By the way, based on the sample base material extracted by cutting it from the product by means such as gas cutting, the following method has conventionally been used to produce test pieces corresponding to various tests from this sample base material. It is implemented in a suitable manner. That is, first, the workpieces corresponding to various test pieces are roughly cut into pieces from the test base material using gas cutting, band saw cutting, etc., and then each workpiece is cut by workers mainly using general-purpose machine tools. fries. Machining such as polishing is performed to finish the test piece into a predetermined shape. In addition, in this case, for each processed material cut out and separated from the test base material, information representative of the history such as the product type number 1 product number and loft number is displayed,
Process management is performed in such a way that this is sent to the next machining process along with a slip or the like, and predetermined machining is performed under machining conditions that correspond to the display of this information. On the other hand, since the items of the above-mentioned product characteristic evaluation tests include tensile, hardness 1 bending, impact, and many others, the types of test pieces that can be used for these test items are also diverse. For this reason, in the conventional manufacturing method described above, in which the workpiece corresponding to each test piece is separated from the test base material and sent to the machining process individually, it is difficult to control the process during the process. As the process is complex and diverse, it is unavoidable that troubles may occur due to misidentification and confusion, especially when it comes to display management.This becomes a major bottleneck in terms of improving productivity and ensuring reliability in processing and process control. ing. In addition, in the conventional method described above, each test piece is manufactured in separate processes, so it takes a long time to obtain comprehensive characteristic test evaluation results for a single product, which delays evaluation and judgment. There is a problem that the SV of the material increases.Furthermore, in recent years in the product processing industry, FMS (Flex
Although technology for rationalizing and automating the manufacturing process is progressing through the introduction of ible machining systems, in order to introduce FMS into the manufacturing process while maintaining the above-mentioned conventional manufacturing method, it is necessary to Since a large amount of information processing functions such as tracking are required, the equipment becomes large-scale, and it is not possible to obtain sufficient results in terms of improvement of work efficiency and investment recovery efficiency by implementing FMS.

[Purpose of the invention]

This invention has been made in consideration of the above points, and in response to the introduction of VMS (TS) for test piece production and process control, it makes it possible to integrate and synchronize the test piece production process. To provide a rational method for manufacturing material test pieces that facilitates the realization of an unmanned factory by shortening the manufacturing process, preventing troubles, and improving reliability of characteristic evaluation. With the goal.

[Key points of the invention] In order to achieve the above-mentioned object, the present invention aims to prevent the test pieces from completely separating from the test base material along the cutting lines corresponding to the shape of each test piece laid out on the test base material. A forming process in which each test piece is processed with a portion left uncut during the process, and a separation and recovery process in which the various test pieces cut out in the above process are punched and separated from the test base material and collected all at once. The test pieces are manufactured through a finishing process in which the test pieces collected in bulk in the separation and collection process are grouped into groups, and each test piece is finished. Consolidation and synchronization of processes and effective use of automation equipment such as machining centers and robots. This enables comprehensive control of the production line. [Embodiments of the invention]

Next, embodiments of the present invention will be described in detail based on the drawings. Fig. 1 is a process diagram showing the overall flow of the manufacturing process of a test piece according to an embodiment of the present invention, Figs. 2 to 15 are processing state diagrams of the test base material at each stage in the forming process, FIG. 16 is an external view of the various test specimens produced, and FIGS. 17 to 19 are barrel diagrams of the press used in the test specimen separation process. First, the entire manufacturing process will be explained step by step with reference to FIG. 1. The illustrated example targets a seamless steel pipe product and shows an example in which various test pieces are manufactured from a sample base material extracted from this steel pipe. First, for the sample base material extracted from the steel pipe manufacturing process and received, history information regarding the product, such as the product type number and loft number, is printed out on a barcode label, and this is provided. Next, after cutting both ends of this test base material 1 into rounds to a predetermined length dimension, it is sent to a machining center where a forming process is performed, and a material property evaluation test is performed during this forming process. Various types of processing corresponding to the shapes of the various test pieces required for the test are automatically performed all at once according to a predetermined order using the NC processing method. In this case, the machining information is determined by reading the above-mentioned barcode with a machining center, and the machining conditions are determined by grooving and flattening along machining lines corresponding to the shapes of various test pieces laid out on the test base material. , mark. The slitting process is performed automatically, and cutting oil,
Sent to a cleaning process to remove chips. What is especially important in this molding process is that each J
The test piece is not completely separated from the test base material I, but remains in the base material with a portion left uncut. As a result, even after cutting out using a machining center, all test specimens can be taken out and sent to the next process integrally with the base material. The test base material l cut out and washed through the above process is then sent to a separation and recovery process, where each test piece cut out onto the test base material by a press is individually separated from the test base material. are separated by punching. Here, for each test piece molded and separated from the test base material 1, the tensile test piece was 3, the hardness test piece was 41, and the analytical test piece was 5. Impact test piece 6. Other test specimens are indicated by 7, and each of the test specimens 3 to 7 that have been punched and separated from the test base material 1 are placed in a predetermined position on a special collection pallet 8 prepared in advance by a handling operation by a robot. They are collected side by side in bulk. Further, in this case, all the mechanical equipment that performs the punching operation of the press and the collection operation onto the pallet 3 reads the bar code of the sample base material described above, and is automatically operated based on the information. Further, the remaining material after each test piece has been punched and separated from the test base material 1 is sent to a remaining material warehouse with a barcode label attached thereto, where it is stored in accordance with predetermined management standards. In addition, the barcode read from the sample base material 1 is printed out on a separate barcode label on the above-mentioned collection pallet 8, and this barcode label 9 is attached to the pallet, and all subsequent processes are based on this barcode. Transport between processes according to information! i! Instructions for finishing the eight specimens are given on a pallet basis. On the other hand, the test pieces collected all at once on the special pallet 8 in the separation and recovery process are then sent to a finishing process, where each test piece is individually deburred and polished. Processing such as notching is performed to finish the specimen into a predetermined shape. In this finishing step as well, each test piece is treated as a group, taken out from the pallet 8, processed, and returned to the pallet after processing. For each test piece that has gone through the finishing process and has undergone all the prescribed processing, it is finally transferred to the individual test pieces in this group based on the barcode information on the pallet 8! ! The test piece is completed by displaying the necessary printing for identification, and then transported all at once to the characteristic evaluation test process. Next, the steps of the work carried out in the above-mentioned manufacturing process will be specifically explained step by step. Process 1: Printing and pasting of barcodes As shown in Figure 2, information about the original material product is printed out on a barcode label on the sample base material extracted from the product manufacturing process and brought in. This barcode label 2 is attached to the test base material l. Step 2: Cutting the sample base material into rounds The test base material 1 is cut into rounds at both ends to a predetermined length l as shown in FIG. Step 3: Forming process of the test base material The test base material 1 is carried into a machining center, where it is subjected to predetermined machining processes corresponding to various test pieces. Step 3-1: Attach the sample base material l to the machining jig of the machining center,
As shown in FIGS. 3 and 4, cutting grooves 10 are first cut at both left and right end positions along the processing line corresponding to the tensile test piece shown by the chain line using the NG processing method using a machining center. The processing conditions at this time are automatically set by reading the information on the barcode label 2 attached to the sample base material 1 and instructing the processing information to the NG device of the machining center. Step 3-2: Grooving of impact and other test pieces Above step 3
-1 and following the same procedure, the impact shown by the chain line laid out on the test base material 1 as shown in FIG. 5, l! degree 1 analysis,
Cut grooves 11 are cut at both left and right end positions of each of the other test pieces along the machining line corresponding to the shape. Step 3-3: Machining of parallel grooves in tensile test piece As shown in FIG. 6, cut grooves 12 are cut along the processing line of the tensile test piece to form the central parallel part thereof. Step 3-4: Flat surface processing for printing on tensile test piece Figures 7 and 8
As shown in the figure, a flat part 13 indicated by diagonal lines for printing on a part corresponding to the ramp part of the tensile test piece is flattened to provide a finished surface. Step 3-5: Plane processing of impact, etc. test pieces As shown in Figures 9 and 1O, for the processing area of each test piece for impact, hardness 9 analysis, etc., a later step is applied to the hatched area 14 on the outer circumferential surface. Plane processing is performed leaving the machining allowance from the polishing process. Step 3-6: Marking process In order to avoid confusion between the test pieces in the completed state as a test piece, as shown in Fig. 11, the surface 14 that was flattened in the previous process is drilled, as indicated by a small circle mark 15. Engraving an identification mark. Step 3-7 Slitting of the second tensile test piece As shown in FIG. 12, slitting is performed along the shape of the tensile test piece so that the grooves 10 and 11 formed in the previous step are connected. This kerf is designated by reference numeral 16, and the D-D and E-E cross sections of this portion are shown in FIGS. 13 and 14, respectively.The important point in this slitting process is the part that will become the test piece, as described above. In order to prevent the kerf from being completely separated from the test base material 1, an uncut portion, indicated by reference numeral 17 in the figure, is located between the kerf grooves 10 and 16 at a part of the corner that extends between the kerf groove 16 and the cut start point. They are formed at a total of four locations and are locally connected to the test base material 1. Note that line a and p show the movement locus of the tool of the machining center.The dimensions of this uncut portion 17 are determined from the relationship with the press punching process performed at a later stage, but in practical terms, it is enough to leave a thickness of about 2 mm. It is best to write these cutting conditions on a tape in the NCg position of the machining center in advance. Step 3-8; Pre-slitting step 3- of impact test piece
Impact and III degree 5 analysis in the same manner as in 8. For the other test pieces, slitting is performed along the processing line of each test piece, as shown in Figure 15, so that the grooves 11 that were formed in the complete distribution process are connected, leaving a part of the space between them uncut. , this kerf is designated by the reference numeral 18. Step 4 - When the above-described forming process in the machining center is completed, the sample base material 1 is carried into a washing machine to wash and remove cutting oil and chips generated during the machining. Step 5: Separation and recovery process of test pieces First, Figures 17, 18, and 19 show a Cartesian coordinate type transfer robot for handling operation equipped with a press for punching and collecting test pieces used in this separation and recovery process, and this. In Figure 0, which describes the outline of the configuration of a pair of index tables, reference numeral 19 is an X-axis moving body mounted with a hydraulic press 20 and moving in the X-axis direction perpendicular to the paper surface, and 21 is an X-axis moving body mounted on the X-axis moving body 19. The Y-axis moving body 21 is equipped with a vacuum-type suction bat 22 that can be moved up and down in the up and down X-axis directions. Note 2
3 is a push rod for press punching that passes through the center of the suction bat 22, and its upper end faces the hydraulic press 20. Further, the suction pad 22 is connected to a vacuum pump 25 via a control valve 24 as shown in FIG. On the other hand, the index table holding the sample base material l is coded 2.
6, and a clamp 27 for gripping the sample base material 1 is provided on its axis. Further, a conveyor 28 is installed on the side of the index table 26.
The aforementioned pallet 8 is placed on top of this conveyor 2. Next, the operation of the test piece separation and collection process performed using the above equipment will be described. The sample base material 1 that has been carried in through the above-mentioned forming process is first placed on the index table 2.
6, and in this state, while rotating the index table, the orthogonal coordinate type robot 1 is operated in conjunction with the hydraulic press 1 and the suction bat 22, and the sample base material 1 is
The various test specimens cut out above are individually punched out one by one, and the punched specimens are gripped with a suction vat and placed in the collection pallet 8 that is placed on standby on the conveyor 28 by robot operation. are arranged in a predetermined order and stored all at once. The collection pallet is divided into partitions corresponding to various test pieces, and the bar code on the bar code label 2 affixed to the test base material 1 is removed using a bar code smudge remover. In addition, this information is printed out using a printer, made into a card, and pasted on the side of the pallet 8. On the other hand, the remaining material of the test base material L after all the test pieces have been punched and separated is shown in the index table 2.
After being removed from the sample base material 6, the remaining material is transported to a warehouse and stored in accordance with predetermined management regulations based on the barcode label affixed to the test base material. Process 6: Deburring processing The various test pieces collected in a collection pallet 8 and taken out from the separation and collection process then enter the finishing process together with the pallet, where they are taken out individually from the collection pallet and processed as described above using a dedicated deburring machine. Remove the debris generated during the cutting process. Of the various test pieces, the impact test piece is polished on all four sides in the next polishing process, so there is no need to remove pars. Step 7: Polishing process The various test pieces collected into the pallet again after the deburring process described above are finished in the next polishing process for impact, hardness 2 analysis, and other test pieces to predetermined dimensions.
It is then stored in the pallet again. It should be noted that the tensile test piece was completely processed in the previous deburring process, so polishing was not necessary. Step 8: Notching the impact test piece Among the various test pieces, the impact test piece is notched to form a notch in the center of the test piece in order to conduct the Charpy impact test. With the above steps, all processing related to various test pieces is completed. Various test pieces manufactured by processing into predetermined shapes are shown in FIGS. 16a, b, and c. Step 9: Printing processing For the various test pieces produced through each of the above steps,
Finally, a printing device individually stamps identification characters. All of this printing is done automatically by reading the information displayed on the barcode label 9 attached to the collection pallet 8. After printing, each test piece is stored in a collection pallet 8 as a group and sent to the characteristic evaluation test process. Various characteristic tests are conducted, and data for evaluating the characteristics of the material for the product is obtained from the results. In addition, although the above example illustrates a method for manufacturing a material test piece using a seamless steel pipe as the product to be tested, it is also possible to manufacture test pieces of various materials such as plate materials, irregularly shaped materials, non-ferrous metals, and non-metallic materials. It is applicable to

【Effect of the invention】

As described above, according to the present invention, the test piece is connected to the base material without being completely separated from the test base material along the cutting line corresponding to the shape of each test piece laid out on the test base material. A forming process in which each test piece is processed with a portion left uncut during the process, and a separation and recovery process in which the various test pieces cut out in the above process are punched and separated from the test base material and collected all at once. The following effects can be achieved by manufacturing test pieces through a finishing process in which the test pieces collected in bulk in the separation and recovery process are grouped into groups. is obtained. +11 Materials During the manufacturing process from the delivery of the sample base material extracted from the product to the completion of various test pieces, each test piece is completely grouped and controlled, so there is no possibility of incorrect production, misidentification, etc. It can reliably prevent troubles such as confusion with other groups, and greatly improve credibility. (2) Since all the test pieces corresponding to the material product to be tested are manufactured as a group in the same process and sent to the testing process all at once, the results of the tests on various items are related to the material product. Characterization information is synchronized and the test data information can be delivered early to the product manufacturing line. This will greatly help in reducing product inventory and reducing work-in-progress. (3) Since the test base material is scrapless except for chips during machining, there is no need to dispose of scraps, making process control easier. (4) In the conventional manufacturing method, the workpiece of each test piece is separated from the test base material, and then the individual test pieces are manufactured mainly by workers using general-purpose machine tools. However, as mentioned above, by performing various types of processing corresponding to each piece on the test base material while keeping it within the base material without separating it from the test base material, Machining Center 1 It becomes easy to adapt the test piece production line to FMS, which introduces automatic processing by robots, handling equipment, and information processing by computers, and thus easily establishes the realization of an unmanned production line for material test pieces. be able to.

[Brief explanation of the drawing]

Fig. 1 is a process diagram showing the overall flow of the manufacturing process of a test piece according to an embodiment of the present invention, and Figs. 2 to 15 are each 'W! Fig. 11 shows a processing state diagram of the test base material that is applied at an intermediate stage in the process, and Fig. 2 shows a state diagram of attaching a barcol label to the test base material and cutting both ends into rounds,
Figure 3 is a diagram of the state of groove cutting on a tensile test piece, and Figure 4 is a diagram of the 3
A sectional view taken along arrow A-A in the figure, Figure 5 is a diagram of the state of grooving of impact and other test specimens, Figure 6 is a diagram of the state of grooving of the parallel part of a tensile test piece, and Figure 7 is a diagram of the state of grooving in the tensile test piece. Fig. 8 is a cross-sectional view taken along the arrow B-B of Fig. 7, Fig. 9 is a plan view of the impact and other test specimens, and Fig. 10 is a diagram of the planar processing state of the printed portion of the piece. 1+ is a cross-sectional view taken along the line C-C, FIG. 1+ is a diagram showing the state of marking on the test piece, FIG. 12 is a diagram showing the state of slitting the tensile test piece, and FIGS. 13g and 14 are respectively shown in the direction D- in FIG. D, E-E sectional view, Figure 15 shows impact,
Diagrams of the slitting process of other test pieces, Figures 16a, b, and c are respectively the completed tensile test piece, IS test piece, and hardness 1 analysis, and outline drawings of other test pieces.
FIG. 7 is a block diagram of a test piece separation and recovery facility, and FIGS. 18 and 19 are partial sectional views of FIG. 17, respectively. In the figure, Engineering: Test base material, 2, 9: Barcode label, 3 to 7: Test piece, 8: Recovery (L/-) l-110, 11, 12
, 16: Cut groove, 17: Uncut portion. YaZ Mouth Said A (2) Sai AcA Saigo Mouth Said Figure 14

Claims (1)

[Scope of Claims] 1) A material test piece in which a test base material extracted from a material product to be tested is processed to produce a test piece for use in various characteristic evaluation tests of the material. A manufacturing method,
The test piece was not completely separated from the test base material along the cutting line corresponding to the shape of each test piece laid out on the test base material, but a portion was left uncut between the test piece and the base material. A forming process in which each test piece is cut out and processed, a separation and recovery process in which the various test pieces cut out in the above process are punched and separated from the test base material and collected all at once; A method for manufacturing a material test piece, characterized in that the test piece is manufactured through a finishing process in which each test piece is processed as a group. 2) In the manufacturing method according to claim 1,
A barcode label containing information about the history of the product was attached to the sample base material in advance, and in the molding process, the specified processing was automatically performed in accordance with the information read from the barcode. A method for producing a material test piece characterized by: 3) In the manufacturing method according to claim 2,
A method for producing a material test piece, characterized in that various processes on the test piece in the forming process are performed all at once by a machining center. 4) In the manufacturing method according to claim 1,
In the separation and collection process, each test piece that was punched and separated from the test base material was collected in a special collection pallet by handling operations, and then sent to the subsequent finishing process while being housed in the pallet. A method for producing a material test piece, characterized by: 5) In the manufacturing method according to claim 4,
A method for producing a material test piece, characterized in that a barcode label displaying history information of a material product corresponding to a test piece stored therein is affixed to a collection pallet.