WO2006028175A1 - プレス成形加工システム、プレス成形加工方法、及びコンピュータプログラム - Google Patents
プレス成形加工システム、プレス成形加工方法、及びコンピュータプログラム Download PDFInfo
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- WO2006028175A1 WO2006028175A1 PCT/JP2005/016527 JP2005016527W WO2006028175A1 WO 2006028175 A1 WO2006028175 A1 WO 2006028175A1 JP 2005016527 W JP2005016527 W JP 2005016527W WO 2006028175 A1 WO2006028175 A1 WO 2006028175A1
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- press
- characteristic data
- molding
- material characteristic
- press molding
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/28—Deep-drawing of cylindrical articles using consecutive dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/26—Programme control arrangements
Definitions
- Press molding processing system press molding processing method, and computer program
- the present invention relates to a press molding processing system, a press molding processing method, and a computer program, and particularly belongs to a technique suitable for use in press molding a material.
- various metal materials used as raw materials include plate materials, pipe materials, bar materials, which are obtained from raw materials and scraps through multiple processes such as melting, forging, rolling, heat treatment, and secondary pressing. Wires, powders, etc. Therefore, due to fluctuations in chemical components and process conditions due to temperature non-uniformity, it is inevitable that there is some variation in the mechanical property values of the molded product. For this reason, even if appropriate molding conditions are determined in advance as described above, moldability may vary depending on the material part and production lot, and molding defects may occur. In order to avoid this, quality control in the raw material manufacturing process is of course stricter, but excessive quality control is not preferable because it leads to an increase in material costs.
- Patent Documents 4, 5, and 6 Further, a technique for adjusting a workpiece to a predetermined bending angle in a bending press carriage using a press brake has been disclosed (see Patent Documents 4, 5, and 6).
- Patent Documents 1 to 3 described above are specific to the material characteristics and the press processing apparatus. Although it is disclosed that the wrinkle holding load is controlled based on information and mold information, the fluctuations in the material characteristics as described above and the fluctuations in the environment when pressing the workpiece are anticipated. It is extremely difficult to predict.
- Patent Documents 4 to 6 described above disclose that the molding conditions are adjusted according to the deformation state during pressing of the pressed workpiece, but drawing press processing, cutting press processing, etc. In addition, it is difficult to measure complex three-dimensional shapes on the spot, and it is very difficult to measure the correct shape because the pressed force body in the press carriage is constrained by the mold. .
- the conventional technology has a problem that it is difficult to perform a good press force.
- Patent Document 1 Japanese Patent Application Laid-Open No. 7-266100
- Patent Document 2 Japanese Patent Laid-Open No. 5-285700
- Patent Document 3 Japanese Patent Laid-Open No. 6-246499
- Patent Document 4 Japanese Patent Laid-Open No. 7-265957
- Patent Document 5 JP-A-10-128451
- Patent Document 6 JP-A-8-300048
- the present invention has been made in view of such problems, and press working is performed more than before.
- the purpose is to be able to perform well.
- the press molding processing system of the present invention connects a press machine control computer to a network
- the press machine control computer on the other hand, is a metal material that has conventionally been difficult to obtain from a server computer via the network.
- the press molding processing system of the present invention includes a press molding calorie device for press molding a material, a user side computer that instructs the press molding processing device for the press molding, and the user side computer. And a server-side computer system connected via a network, wherein the server-side computer transmits a material characteristic data transmitting means for transmitting material characteristic data representing the characteristics of the material
- the computer on the user side includes material characteristic data receiving means for receiving the material characteristic data transmitted by the material characteristic data transmitting means, and the press molding apparatus comprises a punch, a die, and a wrinkle. Based on material characteristic data received by the material characteristic data receiving means In engineering terms, and having a machining condition control means for press-molding the material.
- the press molding method includes a material property data transmitting step for transmitting material property data representing material properties to a user computer via a network, and the material property data transmitting step.
- the material is press-molded in a material property data reception step in which the user-side computer receives the material property data transmitted in the transmission step, and processing conditions based on the material property data received in the material property data reception step.
- a press forming step is a material property data transmitting step for transmitting material property data representing material properties to a user computer via a network.
- the computer program of the present invention includes a material property data transmission step for transmitting material property data representing material properties to a user computer via a network, and a material property data transmission step.
- Material specials sent by The material property data receiving step for receiving the property data by the user-side computer, and the control step for controlling the press molding apparatus under the processing conditions based on the material property data received by the material property data receiving step are executed on the computer. It is characterized by making it.
- FIG. 1 shows an embodiment of the present invention and is a diagram showing an example of a schematic configuration of a press molding processing system.
- FIG. 2 is a block diagram illustrating a part of a functional configuration of the material characteristic data providing apparatus according to the embodiment of the present invention.
- FIG. 3 shows an embodiment of the present invention and is a diagram showing a part of the configuration of a press molding apparatus, a control apparatus, and a condition setting arithmetic unit.
- FIG. 4A is a diagram showing an embodiment of the present invention and showing an example of a material characteristic inquiry screen.
- FIG. 4B is a diagram showing an embodiment of the present invention and showing an example of a material characteristic reception screen.
- FIG. 5 is a flowchart for explaining an example of the operation of the press molding processing system according to the embodiment of the present invention.
- FIG. 6 is a flowchart illustrating an embodiment of the present invention and illustrating an example of the operation of the press molding system following FIG.
- FIG. 7 shows a fourth embodiment of the present invention.
- the measured value of punch reaction force, the moving average of the measured value of punch reaction force, the wrinkle holding pressure, and the number of press workings (molding) It is the figure which showed an example of the relationship with frequency.
- FIG. 1 shows an embodiment of the present invention and is a diagram showing an example of a schematic configuration of a press molding processing system.
- the press molding processing system includes a material property data providing device (server-side computer) 101, a press molding device 102, a control device 103, and a condition setting computing device. (User computer), network 105, and material property database 106. As shown in FIG. 1, the material characteristic data providing device 101 and the condition setting computing device 104 are connected to each other via a network 105 so that they can communicate with each other.
- the material property data providing device 101 sets the material property data indicating the properties of the workpiece (material) to be pressed by the press forming device 102 in accordance with a request from the condition setting computing device 104.
- the condition setting computing device 104 For example, a personal computer.
- a cold-rolled high-tensile steel plate having a tensile strength of 590 [MPa], a plate thickness of 1.4 [mm], and a plate surface size of 1000 [mm] X 500 [mm]
- the cold-rolled high-tensile steel sheet is packed every 100 sheets and supplied to the press-forming casing system. Further, it is assumed that the production lot number is given to the packaging.
- Examples of material property data for cold-rolled high-tensile steel sheets include sheet thickness, yield stress, tensile strength, 0.2% proof stress, elongation, n value, r value, relational expression between stress and strain, hardness, temperature, One type or a combination of two or more types such as surface roughness, coefficient of friction, and lubricant film thickness.
- FIG. 2 is a block diagram showing a part of the functional configuration of the material characteristic data providing apparatus 101. As shown in FIG.
- the material characteristic data providing apparatus 101 includes a material identification number receiving unit 101a, a material characteristic searching unit 101b, a material characteristic data encrypting unit 101c, a material characteristic data transmitting unit 1 Old, and a charging unit 101e. have.
- the material identification number receiving unit 101a is for receiving the material identification number transmitted from the condition setting arithmetic unit 104 as described later.
- the material identification number is assigned to the package as a manufacturing lot number.
- the material characteristic search unit 101b searches the material characteristic database 106 for material characteristic data registered in association with the material identification number. To do. In this way, the material characteristic database 106 is registered with the material characteristic data for each material identification number.
- the material property data encryption unit 101c encrypts the material property data retrieved by the material property retrieval unit 101b.
- the material property data transmission unit 101d uses the encrypted material property data for condition setting. Transmit to arithmetic unit 104.
- the billing unit 101e sends the material characteristic data to the condition setting arithmetic unit 104 on the user side, for example, it updates a transmission history file (client name, connection date and time, amount of transmission data, etc.) and periodically updates it. And charge according to the total traffic.
- a transmission history file client name, connection date and time, amount of transmission data, etc.
- the condition setting arithmetic unit 104 uses the material characteristic data transmitted from the material characteristic data providing apparatus 101 as described above, and forms the molding condition (processing) of the workpiece.
- the control device 103 realized by, for example, a personal computer controls the operation of the press molding device 102 in accordance with the molding conditions obtained by the condition setting arithmetic device 104, or press the press molding device 102. It is for monitoring the operation of the.
- the press forming apparatus 102 is for press forming the material to be caloeed based on the control by the control apparatus 103. As described above, in this embodiment, the press molding apparatus 102 and the control apparatus 103 constitute a press molding apparatus.
- FIG. 3 is a diagram showing a part of the configuration of the press forming apparatus 102, the control apparatus 103, and the condition setting calculation apparatus 104.
- the press molding apparatus 102 includes a die 102a, a strain sensor 102b, a load cell 102c, a punch 102d, and a wrinkle retainer 102e.
- the die 102a is driven in the vertical direction so that the force-bearing material 300 is pressed along the molding surface of the punch 102d.
- the device 102 is adopted.
- the strain sensor 102b is for detecting the strain of the mold constituted by the die 102a, the punch 102d, and the like.
- the load cell 102c is for detecting a punch reaction force or the like.
- the wrinkle retainer 102e is for preventing wrinkles from being generated when the force-bearing material 300 is pressed.
- the member force required for the pressing force of the work material 300 such as an air cylinder, a hydraulic cylinder, a heater, and a hydraulic control device is provided in the press forming device 102. Needless to say.
- the control device 103 includes a speed control device 103a, a wrinkle pressing force control device 103b, and a temperature control device.
- Control device 103c mold strain measurement device 103d, punch reaction force measurement device 103e, mold temperature measurement device 103f, workpiece deformation measurement device 103g, state quantity storage device 103h, control arithmetic device 103i and a state measuring device 103 ⁇ 4.
- the speed control device 103a is for controlling the forming speed determined by the driving speed of the die 102a and the like.
- the wrinkle pressing force control device 103b is for controlling the wrinkle pressing pressure (wrinkle pressing force) that the wrinkle presser 102e applies to the material to be covered 300.
- the temperature control device 103c is for controlling the temperature of the mold.
- the mold strain measuring device 103d is for measuring the strain of the mold by reading the detection value of the strain sensor 102a.
- the punch reaction force measuring device 103e is for reading the detection value of the load cell 102c and measuring the punch reaction force.
- the mold temperature measuring device 103f is used to measure the temperature of the mold and the workpiece 300 by reading the detection value of the temperature sensor (thermocouple) attached to the die 102a, punch 102d, etc. .
- the force-bearing material deformation measuring device 103g is for measuring the degree of deformation of the force-bearing material 300.
- the state measuring apparatus 103 ⁇ 4 is for measuring the workpiece 300 before press working and obtaining material characteristic measurement data. Examples of the material characteristic measurement data include data based on the hardness, surface roughness, and friction coefficient of the workpiece 300.
- the state quantity storage device 103h was thus measured by the mold strain measuring device 103d, the measuring device 103e, the mold temperature measuring device 103f, the workpiece deformation measuring device 103g, and the state measuring device 103 ⁇ 4. This is for storing a history of state quantities of the press forming apparatus 102.
- the control device 103 constitutes the machining condition control means.
- the condition setting computing device 104 includes a molding condition input unit 104a, a material identification number input unit 104b, a material identification number transmission unit 104c, a material property data reception unit 104d, and a material property data decoding unit. 104e and a molding condition calculation unit 104f.
- the molding condition input unit 104a is for inputting and storing basic molding conditions based on the operation of the user operation unit.
- the molding condition input unit 104a inputs wrinkle holding force, molding speed, mold temperature, and the like as basic molding conditions.
- the material identification number input unit 104b displays a material property inquiry screen 401 as shown in FIG. This is for inputting the material identification number based on the user's operation.
- the material identification number transmission unit 104c when the material identification number (manufacturing lot number) is input to the material property inquiry screen 401 shown in FIG. The number (manufacturing lot number) is transmitted to the material characteristic data providing apparatus 101.
- the material characteristic data receiving unit 104d receives encrypted material characteristic data transmitted from the material characteristic data providing apparatus 101 as a response to the material identification number transmitted by the material identification number transmitting unit 104c. Is.
- the material property data decryption unit 104e is for decrypting encrypted material property data and using it for calculation of molding conditions.
- the material characteristic data receiving unit 104d receives the material characteristic data, decrypts the material characteristic, and then displays the material characteristic reception screen 402 as shown in FIG. 4B. Display on the monitor.
- the decrypted material property data can be used directly for the calculation of molding conditions without being displayed on the monitor, and the material property data can be reused by making the material property data invisible to the user ( Try to be able to prevent unauthorized copying).
- the molding condition calculation unit 104f uses the material property data received by the material property data receiving unit 104d, the state quantity of the press molding device 102 stored in the state quantity storage device 103h, and the like. This is for calculating molding conditions in the molding apparatus 102.
- step S1 the process waits until the supported material 300 is set in the press forming apparatus 102.
- the process proceeds to step S2 to set conditions.
- the material identification number input unit 104b of the computing device 104 for the computer determines whether or not the material identification number has been input and the transmission button has been pressed based on the user's operation on the material property inquiry screen 401 shown in FIG. 4A. To do.
- step S 3 the material identification number transmission unit 104 b of the condition setting arithmetic unit 104 determines in step S 2.
- the material identification number determined to be input is transmitted to the material property data providing apparatus 101.
- step S4 the material identification number receiving unit 10la of the material characteristic data providing apparatus 101 determines whether or not the material identification number transmitted in step S3 has been received.
- step S 5 the material characteristic search unit 101 b of the material characteristic data providing apparatus 101 sets the material identification number determined to be received in step S 4.
- the associated material characteristic data is acquired from the material characteristic database 106.
- step S6 the material property data encryption unit 101c of the material property data providing apparatus 101 encrypts the material property data retrieved in step S5.
- step S7 the material property data transmitting unit 101d of the material property data providing apparatus 101 transmits the material property data encrypted in step S6 to the condition setting computing device 104.
- step S8 the material property data receiving unit 104d of the condition setting arithmetic unit 104 determines whether or not it has received the encrypted material property data transmitted in step S7.
- step S9 the material characteristic data decoding unit 104e of the condition setting arithmetic unit 104 decodes the material characteristic data.
- step 10 the material property data receiving unit 104d stores the material property data decrypted in step S9.
- step S11 the molding condition input unit 104a of the condition setting arithmetic unit 104 determines whether or not the basic molding conditions are input based on the user's operation. If the basic molding conditions are input as a result of this determination, the process proceeds to step S12, and the molding condition input unit 104a stores the basic molding conditions input in step S9.
- step S13 the state measuring device 103j of the control device 103 measures the hardness, surface roughness, friction coefficient, etc. of the workpiece 300 set in step S1, and measures the measured workpiece. Memorize material property measurement data based on 300 hardness, surface roughness, and friction coefficient.
- step S14 the molding condition calculation unit 104e of the condition setting calculation device 104 is set. Reads the state quantity history of the press forming apparatus 102 stored in the state quantity storage apparatus 103h of the control apparatus 103. At this time, the molding condition calculation unit 104f also reads out the material characteristic measurement data stored in step S13.
- step S13 the molding condition calculation unit 104f, the material characteristic data stored in step S10, the basic molding conditions stored in step S12, and the press molding read in step S14. Based on the state quantity history of the apparatus 102 and the material characteristic measurement data, the forming conditions of the press forming apparatus 102 are corrected.
- the initial value CO (i) of the molding condition is corrected using the following (Equation 1).
- ccr (i) is the molding condition after correction.
- Ti, j) is an influence function matrix that represents the relationship between the deviation from the standard value of the material characteristics of the material to be processed 300 and the correction amount of the molding conditions.
- P (j) is the actual value of each material characteristic.
- P0 (j) is the standard value for each material characteristic.
- M is the number of material properties.
- L is the number of set values of molding conditions
- the initial value CO (i) of the molding conditions may be constant during molding or may be changed during molding.
- a set value for the stroke amount of the punch 102d may be given.
- each component of the influence function matrix Tl (i, j) is obtained from changes in the optimum molding conditions (sensitivity analysis) with respect to changes in various material properties using a molding simulation by a finite element method.
- sensitivity analysis sensitivity analysis
- product quality variations in material characteristics and molding conditions and product quality (cracking, wrinkles, springback, surface distortion, etc.) in actual mass production presses.
- the material characteristic values and the configuration and formulation method of the molding conditions are not limited to this, and can be arbitrarily set.
- step S16 the control arithmetic device 103i is modified in step S15.
- the molding conditions of the press molding apparatus 102 are read out and based on the read molding conditions, control commands are output to the speed control device 103a, the wrinkle pressing force control device 103b, and the temperature control device 103c.
- the speed control device 103a, the wrinkle pressing force control device 103b, and the temperature control device 103c control the press molding device 102 based on this control command. As a result, the pressing force of the workpiece 300 starts.
- step S17 the mold strain measuring device 103d, the punch reaction force measuring device 103e, the mold temperature measuring device 103f, and the workpiece deformation measuring device 103g are in the press cage of the press molding device 102. Measure the state quantity.
- step S18 the molding condition calculation unit 104e determines whether or not the force is such that the difference between the state quantity measured in step S17 and a predetermined target state quantity is within an allowable range. If the result of this determination is that it is within the allowable range, the process proceeds to step S19, and the control arithmetic unit 103i, for example, based on the measurement result of the workpiece deformation measuring device 103g, It is determined whether or not the force has been completed.
- step S20 If the result of this determination is that the press carriage (forming) of the workpiece 300 has been completed, the process proceeds to step S20, and the state quantity measured in step S17 is stored in the state quantity storage device 103h. Step S1 returns and waits for acceptance of the next 300 materials. On the other hand, if the press working (molding) of the workpiece 300 has not been completed, the process returns to step S17 and the state quantity is measured again.
- step S18 If it is determined in step S18 that the difference between the state quantity measured in step S17 and the predetermined target state quantity is not within the allowable range, the process proceeds to step S21.
- the molding condition calculation unit 104e corrects the molding conditions. Then, the process returns to step S17, and the state quantity is measured again.
- the molding condition C (T (i) obtained in the above (1 formula) is corrected using the following (2 formula).
- C (i) is a correction value of the molding condition.
- T2 (i, k) is an influence function matrix that expresses the relationship between the deviation from the standard values of various measured state quantities and the correction amount of the molding conditions.
- S (k) is the state quantity measured in step SI7.
- SO (k) is the standard value of the state quantity.
- N is the number of state quantities.
- each component of the influence function matrix T2 responds to changes in various material characteristics using a molding simulation by the finite element method. There is a method to find it from changes in optimum molding conditions (sensitivity analysis). There is also a method of statistically obtaining from the relationship between the material characteristic noise in actual mass production presses, molding conditions and product quality (cracking, wrinkles, spring back, surface distortion, etc.). Further, there is a method in which an actual measurement value of product quality is input to the press forming apparatus 102 as teaching data and is created and updated using a learning function based on, for example, a -Ural network. It should be noted that the configuration of the state quantity and the formulation method are not limited to this and can be arbitrarily set.
- the actual value of the material characteristic is compared with the standard value, and the molding conditions such as the molding speed and the wrinkle holding pressure are corrected according to the comparison result, and the corrected molding is performed. Since the pressing of the stressed material 300 is started under the conditions, it is possible to reduce the occurrence of wrinkles and wrinkles as much as possible when the stressed material 300 is pressed. In addition, it is possible to suppress the influence of variable factors that are difficult to predict, such as variations in material characteristics and environmental changes. As a result, appropriate molding conditions can be obtained, and a good molded product can be obtained.
- step S20 the process of step S20 is completed, the process may be transferred to step S16 which is not step S1.
- the material identification number (manufacturing lot number) is input by operating the operation unit such as a keyboard or a mouse provided in the condition setting arithmetic unit 104.
- the operation unit such as a keyboard or a mouse provided in the condition setting arithmetic unit 104.
- the material identification number is not necessary to input the material identification number.
- a barcode storing information related to the production lot number is attached to the workpiece 300, the barcode information is read by a barcode reader, and the information power of the read barcode is measured. It is also possible to determine the number and send the determined production lot number to the material characteristic data providing apparatus 101! Further, the production lot number recorded on the disk recording medium such as the IC tag, the flexible disk, and the magneto-optical disk may be transmitted to the material characteristic data providing apparatus 101.
- the condition setting computing device 104 receives the actual values of tensile strength, 0.2% proof stress, total elongation, and plate thickness as material property data from the material property data providing device 101.
- the setting values of the molding speed and the wrinkle holding pressure are corrected for each production lot using the above (1) based on the actual values of the material characteristics. Specifically, for example, the standard value P0 (j) of the material characteristics of the supported material 300 as shown in the following (Equation 3) and the actual value P (j) of the material characteristics as shown in the (Equation 4).
- the molding condition calculation unit 104f of the condition setting calculation device 104 is The obtained forming speed and wrinkle holding pressure, and the maximum value of the measured punch reaction force and the maximum value of mold distortion are set as standard values of the state quantities.
- the molding condition calculation unit 104f sets the standard value SO (k) of the state quantity shown below.
- the molding condition calculation unit 104f calculates the molding condition C (i) using the above (Equation 2), and the calculated molding condition C (i) is transferred to the control arithmetic unit 103i of the control device 103. Output.
- the control arithmetic device 103i starts the press force of the supported material 300 based on the molding condition C (i).
- the maximum value of punch reaction force and the maximum value of mold distortion during molding are measured, and the maximum value of punch reaction force and the maximum value of mold distortion measured are set as described above.
- the molding speed and the wrinkle holding pressure are corrected according to the difference from the standard value.
- the measured value S (k) of the state quantity determined from the maximum punch reaction force during molding and the maximum mold distortion is as shown in the following (Equation 9):
- the molding condition calculation unit 104f sets the molding condition setting value C (T (i) shown in the above (Expression 7) and the standard value SO (k) of the state quantity shown in the above (Expression 8).
- the influence function matrix T2 (i, k) shown in the following (Equation 10) is substituted into the above (Equation 2), and the modified value C (i) of the molding condition as shown in the following (Equation 11)
- the influence function matrix T2 (i, k) is set in advance.
- the punching reaction force and the mold distortion in the press carriage are measured based on the material characteristic data received from the material characteristic data providing apparatus 101, and the measurement results are measured. Accordingly, since the molding speed and the wrinkle holding pressure are corrected, more appropriate molding conditions for the workpiece 300 can be obtained, and a better molded product can be obtained.
- each time pressing is performed the pressing speed of the force that corrects the forming speed and the wrinkle pressing pressure may be corrected every time it is performed. Also press
- the maximum value of the punch reaction force during machining and the maximum value of the die reaction force were set as the standard value SO (k) of the state quantity. It is also possible to set the standard value SO (k) of the state quantity by comprehensively judging the time series data force. For example, the standard value SO (k) of the state quantity may be evaluated using values of a plurality of points in the time series data.
- the condition setting arithmetic unit 104 uses the material characteristic data providing apparatus to provide the actual values of tensile strength, 0.2% resistance, total elongation, and sheet thickness as material characteristic data. Receive from 101.
- the condition setting computing device 104 cannot be provided by the material property data providing device 101, but the operator of the material property data providing device 101 cannot know.
- the material characteristic data is input based on the operation by the user of the operation unit provided in the condition setting arithmetic unit 104.
- a case where the actual value of the lubricating oil film thickness is input will be described as an example.
- the molding condition calculation unit 104e determines molding conditions such as a molding speed and a wrinkle holding pressure based on (Formula 1). Correct it.
- the material property data that can be known only by the user using the condition setting arithmetic device 104. Since the molding conditions have been modified in consideration of the above, in addition to variations in material characteristics and environmental changes, the influence of fluctuation factors such as the lubricity and surface properties between the mold and workpiece 300 should be suppressed. Can do. As a result, more appropriate molding conditions can be obtained.
- condition setting arithmetic unit 104 uses the material characteristic data providing apparatus to provide the actual values of tensile strength, 0.2% resistance, total elongation, and sheet thickness as material characteristic data. Receive from 101. However, in this embodiment, the representative value of the production lot (for example, the representative value of 100 workpieces 300) is received as the material characteristic data.
- condition setting arithmetic device 104 uses the material property data, which varies widely depending on the workpiece 300, based on the operation by the user of the operation unit provided in the condition setting arithmetic device 104. Enter.
- material characteristic data the actual value of the Vickers hardness of the work material 300 before press carriage is input.
- the molding condition calculation unit 104f uses the (formula 1) based on the received material characteristic data and the input material characteristic data to determine molding conditions such as molding speed and wrinkle pressure. Correct it.
- the material property data that has a great influence on the pressing force is measured separately on the user side if not taken into consideration for each of the supported work materials 300, and this measured material property data is measured. Therefore, even if the material property data received from the material property data providing device 101 is the representative value of the production lot, It can be pressed.
- condition setting arithmetic unit 104 uses the material characteristic data providing apparatus to provide the actual values of tensile strength, 0.2% resistance, total elongation, and sheet thickness as material characteristic data. Receive from 101.
- the wrinkle pressure is adjusted and adjusted so that the punch reaction force is within the allowable range. Continue pressing force with the wrinkle pressure.
- the press force is started according to the correction value C (T (i) of the molding condition.
- the punch reaction force measuring device 103e is used to check the press force.
- the punch reaction force is measured, and the measured maximum value of the punch reaction force is recorded on a recording medium provided in the condition setting arithmetic unit 104 every time press working is performed.
- the molding condition calculation unit 104e of the condition setting calculation device 104 determines whether or not the ten-point moving average force of the punch reaction force recorded on the recording medium is within a preset allowable range. If it is not within the allowable range, adjust the crease pressure as described above and continue the press force check.
- the 10-point moving average 703 of the measured punch reaction force 702 is the allowable range (450 [Ton] or more and 550 [Ton] or less when the press calo is executed about 50 times. ) Is exceeded. Therefore, the wrinkle holding pressure 701 is reduced from 150 [Ton] to 145 [Ton] and pressing is continued so that the 10-point moving average 703 of the punch reaction force measurement value 702 is within the allowable range. I have to.
- the measured value S (k) of the state quantity determined as the maximum value force of the punch reaction force is
- the modified value CCT (i) of the molding condition shown in the above (Equation 20) and the influence function matrix T2 as shown in the following (Equation 22) Substituting (i, k) and the standard value SO (k) of the state quantity as shown in the following (Equation 23) into the above (Equation 2), the molding conditions as shown in the following (Equation 24) Get the correction value C (i).
- the influence function matrix T2 (i, k) is set in advance.
- the material characteristic data received from the material characteristic data providing apparatus 101 is used as a basis when the punch reaction force during the press carriage exceeds the allowable range.
- the wrinkle holding pressure is adjusted so that the reaction force is within the allowable range, and the press force is continued with the adjusted wrinkle holding pressure, so the occurrence of defective products can be further reduced. It is possible to press-cage a predetermined number of supported materials 300 even more appropriately.
- the case where the wrinkle pressing pressure is adjusted so that the punch reaction force is within the allowable range and the press processing is continued with the adjusted wrinkle pressing pressure has been described as an example.
- the present invention is not limited to this form, and at least one of punch reaction force, mold temperature, mold distortion, deformation amount of workpiece 300, and temperature of workpiece 300 during press carriage 1 If one state quantity exceeds the allowable range, at least one of wrinkle pressure, molding speed, and mold temperature is adjusted so that the state quantity exceeding the allowable range falls within the allowable range. Make sure to adjust.
- the current value of the state quantity such as the punch reaction force and the past actual value may be compared, and the processing conditions such as wrinkle suppression pressure may be adjusted according to the comparison result.
- the processing conditions such as wrinkle suppression pressure may be adjusted according to the comparison result.
- the wrinkle suppression pressure is set so that the difference does not exceed the predetermined value. Try to adjust.
- the condition setting arithmetic unit 104 uses the material characteristic data providing apparatus to provide the actual values of tensile strength, 0.2% resistance, total elongation, and sheet thickness as material characteristic data. Receive from 101. However, in the present embodiment, the received material characteristic data is encrypted in the material characteristic data providing apparatus 101, and after decryption is performed in the condition setting arithmetic apparatus 104, in the first embodiment. Press molding was performed according to the procedure described.
- the material property data providing device 101 is operated by a material manufacturer, and each time material property data is transmitted to a customer who uses the condition setting arithmetic device 104, a transmission history file (client name, connection date and time) The amount of transmission data, etc.) was updated, and it was periodically counted and charged according to the total traffic.
- a transmission history file client name, connection date and time
- the amount of transmission data, etc. was updated, and it was periodically counted and charged according to the total traffic.
- customers can obtain accurate material property data for each material while ensuring the confidentiality of the data, so that the operator does not need to revise the molding conditions empirically each time.
- the effect of reducing the quality variation was obtained.
- material manufacturers have greatly reduced the effort to create conventional paper-based mill sheets through encryption and billing, ensuring the confidentiality of material property data, and reusing material property data (unauthorized copying). ), And the cost of maintaining and maintaining the system was obtained.
- the program code of the software itself realizes the functions of the above-described embodiments, and the program code itself and means for supplying the program code to the computer, for example,
- a recording medium storing the program code to be used constitutes the present invention.
- a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used as a recording medium for storing the program code.
- the embodiment of the present invention also includes a program code that can be used when the functions of the above-described embodiment are realized together with the application software.
- the function expansion board or function expansion unit is based on the instruction of the program code. It goes without saying that the present invention also includes a case where the CPU or the like provided in the above performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.
- the material is press-molded under the processing conditions based on the material property data transmitted to the computer on the server side through the network on the server side, the variation in the material properties is reduced. It becomes possible to determine the molding conditions in consideration. As a result, as appropriate molding conditions as possible can be obtained, and a good molded product can be obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- General Factory Administration (AREA)
- Control Of Presses (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2007002652A MX2007002652A (es) | 2004-09-10 | 2005-09-08 | Sistema de prensado, metodo de prensado y programa de computadora. |
EP05782300.7A EP1787737B1 (en) | 2004-09-10 | 2005-09-08 | Press forming system, press forming method, and computer program product |
MX2014006610A MX367067B (es) | 2004-09-10 | 2005-09-08 | Sistema de prensado, metodo de prensado y programa de computadora. |
US11/575,059 US7886564B2 (en) | 2004-09-10 | 2005-09-08 | System, method, software arrangement and computer-accessible medium for press-forming of materials |
BRPI0515350-6A BRPI0515350B1 (pt) | 2004-09-10 | 2005-09-08 | Sistema de formação em prensa e método de formação em prensa |
CA2580066A CA2580066C (en) | 2004-09-10 | 2005-09-08 | Press forming system, press forming method, and computer program |
ES05782300T ES2717605T3 (es) | 2004-09-10 | 2005-09-08 | Sistema de conformación en prensa, procedimiento de conformación en prensa y producto de programa de ordenador |
US12/979,203 US8091395B2 (en) | 2004-09-10 | 2010-12-27 | System, method, software arrangement and computer-accessible medium for press-forming of materials |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-264434 | 2004-09-10 | ||
JP2004264434A JP2006075884A (ja) | 2004-09-10 | 2004-09-10 | プレス成形加工システム、プレス成形加工方法、及びコンピュータプログラム |
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US11/575,059 A-371-Of-International US7886564B2 (en) | 2004-09-10 | 2005-09-08 | System, method, software arrangement and computer-accessible medium for press-forming of materials |
US12/979,203 Division US8091395B2 (en) | 2004-09-10 | 2010-12-27 | System, method, software arrangement and computer-accessible medium for press-forming of materials |
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WO2006028175A1 true WO2006028175A1 (ja) | 2006-03-16 |
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US (2) | US7886564B2 (ja) |
EP (1) | EP1787737B1 (ja) |
JP (1) | JP2006075884A (ja) |
KR (2) | KR20070043033A (ja) |
CN (1) | CN100551573C (ja) |
BR (1) | BRPI0515350B1 (ja) |
CA (1) | CA2580066C (ja) |
ES (1) | ES2717605T3 (ja) |
MX (2) | MX367067B (ja) |
RU (1) | RU2352423C2 (ja) |
TR (1) | TR201904522T4 (ja) |
TW (1) | TWI305157B (ja) |
WO (1) | WO2006028175A1 (ja) |
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CN100551573C (zh) | 2009-10-21 |
RU2352423C2 (ru) | 2009-04-20 |
KR20090089920A (ko) | 2009-08-24 |
US20110094279A1 (en) | 2011-04-28 |
US7886564B2 (en) | 2011-02-15 |
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RU2007113172A (ru) | 2008-10-20 |
US8091395B2 (en) | 2012-01-10 |
TR201904522T4 (tr) | 2019-05-21 |
EP1787737A4 (en) | 2008-05-28 |
KR101067572B1 (ko) | 2011-09-27 |
KR20070043033A (ko) | 2007-04-24 |
CA2580066C (en) | 2011-01-25 |
MX2007002652A (es) | 2007-05-15 |
TW200618884A (en) | 2006-06-16 |
EP1787737B1 (en) | 2019-01-16 |
EP1787737A1 (en) | 2007-05-23 |
JP2006075884A (ja) | 2006-03-23 |
CN101014428A (zh) | 2007-08-08 |
MX367067B (es) | 2019-08-02 |
BRPI0515350A (pt) | 2008-07-15 |
CA2580066A1 (en) | 2006-03-16 |
US20080092620A1 (en) | 2008-04-24 |
TWI305157B (en) | 2009-01-11 |
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