WO2006054596A1 - 曲げ加工方法、曲げ加工方法に使用する金型及び折曲げ加工機 - Google Patents
曲げ加工方法、曲げ加工方法に使用する金型及び折曲げ加工機 Download PDFInfo
- Publication number
- WO2006054596A1 WO2006054596A1 PCT/JP2005/021033 JP2005021033W WO2006054596A1 WO 2006054596 A1 WO2006054596 A1 WO 2006054596A1 JP 2005021033 W JP2005021033 W JP 2005021033W WO 2006054596 A1 WO2006054596 A1 WO 2006054596A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- workpiece
- bending
- die
- punch
- groove
- Prior art date
Links
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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
Definitions
- the present invention relates to a bending method for bending a plate-shaped workpiece into a V-shape by a bending carriage such as a press brake, a mold used for the bending method, and a folding method.
- the present invention relates to a bending machine, and more particularly, to a bending method that performs bending while suppressing the amount of overbending of a workpiece to be small, a mold used for the bending method, and a bending machine.
- a die having a V-shaped machining groove and a punch having a tip-side shape corresponding to the machining groove are mounted on a bending machine such as a press brake to form a plate-like workpiece.
- a bending machine such as a press brake to form a plate-like workpiece.
- bending methods such as air bend (free bending), bottoming (pressure bending), coining (pressure bending).
- the air bend presses and bends a workpiece supported at two points on both shoulders of a V-shaped machining groove in a die with the tip of the punch, thereby forming a V-shaped workpiece. It is a processing method of bending into a shape. In this air bend, although the workpiece can be bent at various desired angles with a pair of punches and dies, there is a problem that the amount of the spring bag is large.
- the bending curve of the workpiece by bottoming is that the workpiece is sandwiched between a V-shaped machining groove and a punch in the die, but for example, when bending 90 °, the angle of the V groove For example, a 88 ° or 89 ° die is used, and the bending force is checked so that it becomes 90 ° when a spring back is generated on the workpiece.
- the amount of spring back is smaller than that of air bend, but there is a problem in bending the workpiece with higher accuracy than the amount of spring bag is not always stable.
- Patent Document 1 Japanese Patent Publication No. 2001-1049
- Patent Document 2 Japanese Patent Application Laid-Open No. 8-155553
- Patent Document 3 Japanese Patent Application Laid-Open No. 7-39939
- Patent Document 2 The invention described in Patent Document 2 is based on the premise that the workpiece is bent by air bend and bottoming.
- the workpiece is folded by applying a pressing force 5 to 8 times that of the air bend. It is not supposed to be a coining force that performs bending force.
- the workpiece is removed from the mold after the first bending caulking of the workpiece, and the left and right angles of the workpiece are measured and do not coincide with the target angle.
- the accuracy of the bending angle at a plurality of points of the workpiece is improved by calculating and correcting the correction stroke amounts of the left and right drive shafts based on the difference from the target angle.
- the invention according to the description in Patent Document 3 relates to air bend processing, and the position control of the ram. Therefore, it is difficult to apply as it is to bottoming and coining.
- the air bending has three-point bending because the bending angle of the workpiece can be freely changed in the three-point positional relationship between the shoulders of the V-shaped machining groove in the die and the tip of the punch. Sometimes called.
- Patent Document 4 a structure of a die that looks similar to the die according to the present invention at first glance is described in Japanese publication No. 9-295505 (Patent Document 4).
- the radius of curvature of the die shoulder is as small as about 0.8 mm
- the progress rate of initial wear is not fast and stable, and the bending force of the workpiece is measured, for example, 2000 times or more.
- the curved surface of the die shoulder is formed into a shoulder curve when bent 2000 times, and the radius of curvature at that time is 0.99 mm. It is a small thing
- the invention described in the above-mentioned published patent publication tries to form the upper part of the V-shaped machining groove in the die from the substantially intermediate depth position to a convex curved surface having a large curvature radius, for example.
- the present invention has nothing to do with the present invention.
- the amount of springback is smaller than that of air bending, the springback still exists. Therefore, when the folding target angle is 90 °, for example, the V-shape of the die
- the inclination angle of the processed groove is set to an angle slightly smaller than 90 ° (for example, 88 °) in consideration of the springback amount.
- coining is a process in which the machining groove (V-groove) and punch inclination angle in the die are transferred to the workpiece, and a large pressure is applied to the workpiece.
- the workpiece when trying to bend the workpiece accurately at 90 °, for example, when using a mold used for air bending or bottoming, the workpiece is folded at the angle of the V groove set in advance to allow for the amount of spring back. It will be bent and cannot be bent to the target angle.
- the present invention has been made to solve the above-described problems, and the first object of the present invention is to perform pressurization of the workpiece without excess and deficiency, and to change the shape of the punch and die. It is an object of the present invention to provide a bending method capable of accurately performing a bending process transferred to a workpiece, a die used for the bending method, and a bending machine.
- a second object of the present invention is to provide a bending method capable of reducing the bending pressure by locally pressurizing the workpiece, a mold used for the bending method, and the bending process. Is to provide a machine.
- a third object of the present invention is to provide a bending method capable of suppressing the applied pressure to a small value by reducing the amount of bending return of the work, a mold used for the bending method, and a bending machine. Is to provide.
- a first aspect of the present invention provides a V-shaped groove in a die mounted on a bending machine and a tip of a punch mounted on the bending machine.
- This is a bending method in which a plate-shaped workpiece is sandwiched between the part side and the workpiece is bent.
- the required force is calculated based on the calculated pressure and the length of the bending line of the new workpiece to be bent, and the new pressure is calculated based on the calculated pressure. Bending of the plate.
- a plate-shaped workpiece is sandwiched between a V-shaped processing groove in a die mounted on a bending machine and a tip end side of a punch mounted on the bending machine.
- the bending force method is to perform bending force check and calculate the pressing force per unit length based on the pressing force required for bending work of the workpiece that has been bent in advance. Calculate the total applied pressure required based on the bending line length of the new workpiece that also performs the bending force, or calculate the total applied pressure theoretically based on the mold information, material information and bending information.
- the pressure applied by the pressing means provided on the left and right sides of the bending machine is calculated.
- the amount of distortion of both side frames is calculated, the inclination angle of the ram that supports the die or punch is calculated based on the calculated amount of distortion of both side frames, and the ram angle is corrected to correct the calculated inclination angle of the ram. Is tilted in the opposite direction in advance, and the ram is pressed by the pressurizing means while maintaining the tilted state, and the bending force of the workpiece is measured.
- a third aspect of the present invention includes a punch and a die for performing a bending force check of a plate-like workpiece, and a ram for vertically moving one of the punch or die can be moved up and down.
- a bending machine comprising pressurizing means for moving the ram up and down to pressurize the workpiece between the punch and the die, wherein the punch, die mold information, workpiece material information and bending
- An input means for inputting information, a database storing pressure force data per unit length required for bending a workpiece, various information input from the input means, and an input stored in the database
- Calculation means for calculating the pressurizing force required for the pressurizing means based on the pressure data, and the calculation means based on the calculation result of the calculation means.
- Control means for controlling the pressurizing means.
- a fourth aspect of the present invention includes a punch and a die for performing a bending force check of a plate-like workpiece, and a ram for vertically moving one of the punch or die can be moved up and down.
- a bending machine equipped with pressure means for moving the ram up and down to pressurize the workpiece between the punch and the die on both the left and right sides, and information on molds of the punch and die and material information of the workpiece
- an input means for inputting bending information a database storing data of pressure force per unit length required for bending of various workpieces, various information input from the input means and stored in the database.
- the first calculating means for calculating the total pressing force required for the pressurizing means based on the applied pressing force data, the total pressing force calculated by the first calculating means and the work for the bending machine.
- Location information Second calculation means that calculates the pressure applied to the left and right pressurization means based on the information and the amount of distortion of both side frames in the bending machine based on the calculation result of the second calculation means
- a third calculating means for calculating the inclination angle of the ram, and the right and left pressurizing means for correcting the inclination angle of the ram calculated by the third calculating means to opposite inclination angles, and
- a control means for controlling the right and left pressurizing means according to the calculation result of the two calculating means.
- a fifth aspect of the present invention includes a punch and a die for performing a bending force check of a plate-like workpiece, and a ram for vertically moving one of the punch or die can be moved up and down.
- a bending machine comprising pressurizing means for moving the ram up and down to pressurize the workpiece between the punch and the die, wherein the punch, die mold information, workpiece material information and bending Input means for inputting information, calculation means for calculating the pressing force required for bending the workpiece based on the mold information, material information and bending information, and calculation results of the calculation means And a control means for controlling the pressurizing means.
- a sixth aspect of the present invention includes a punch and a die for performing a bending force check of a plate-like workpiece, and a ram for vertically moving one of the punch or die can be moved up and down.
- a bending machine equipped with pressure means for moving the ram up and down to pressurize the workpiece between the punch and the die on both the left and right sides, and information on molds of the punch and die and material information of the workpiece
- input means for inputting bending information, and input from the input means
- the first calculation means for calculating the total applied pressure required for workpiece bending based on the various information, and the total applied pressure calculated by the first calculation means and the work position information for the bending machine.
- the unit length per unit length is determined by the pressing force required for the bending force of the workpiece subjected to the bending force.
- the necessary pressure for the bending force is determined by the pressure per unit length and the bending line length of the workpiece. Since the pressurization is performed with the applied pressure obtained in this way, the workpiece can be pressurized without excess and deficiency, and the bending force that accurately transfers the shape of the punch and die to the workpiece can be accurately performed.
- a seventh aspect of the present invention provides a bending method for bending a plate-shaped workpiece, wherein the die is provided with a V-shaped processing groove.
- the workpiece placed on the workpiece is pressed by a punch, and the workpiece is clamped by the inclined plane provided in the machining groove and the inclined plane provided in the punch, the inclined plane provided only near the bottom of the machining groove and the Only the both side parts close to the bending line of the workpiece bent in a V shape are locally pressurized by the inclined plane near the tip of the punch.
- An eighth aspect of the present invention is a folding cage method for performing a bending force test of a plate-like workpiece, wherein a workpiece placed on a die having a V-shaped machining groove is used.
- the force at the time of starting the bending process of the workpiece is also inclined between the inclined plane of the machining groove and the inclination of the punch. Increase and pressurize the pressing force until the workpiece is clamped by a flat surface without decreasing.
- a ninth aspect of the present invention is a folding cover method for performing a bending force check of a plate-like workpiece.
- a workpiece placed on a die having a V-shaped machining groove is pressed by a punch, and an inclined plane provided near the bottom of the processed groove and an inclined plane provided near the tip of the punch.
- the position where the workpiece is supported on one side surface and the other side surface of the die groove is gradually moved to the bottom side of the machining groove, and the inclined plane of the machining groove and the inclined plane of the punch Finally, the work is pinched and the work is pressed locally.
- a tenth aspect of the present invention is a die for performing a bending force check of a plate-shaped workpiece, comprising a top surface and a V-shaped processing groove, on both sides near the bottom of the processing groove.
- the uppermost tangent plane with respect to the curved surface connected so as to be in contact with the inclined plane and the upper surface is a plane that coincides with the upper surface, and the lowermost tangent plane with respect to the curved surface is coincident with the inclined surface.
- the curved surface is a convex curved surface in which the curvature radius on the lower side is larger than the curvature radius on the upper side.
- An eleventh aspect of the present invention is a die for performing a bending force check of a plate-shaped workpiece, comprising a top surface and a V-shaped processing groove, on both sides near the bottom of the processing groove.
- a concave surface portion is provided between the inclined flat surface provided to the curved surface and the curved surface connected to be in contact with the upper surface.
- a twelfth aspect of the present invention is a die for performing a bending force check of a plate-shaped workpiece, and pressurizes the workpiece locally in cooperation with an inclined plane provided on the punch tip side.
- An inclined plane is provided on the bottom side of the processed groove formed in the die body, and both side surfaces from the upper portion of the inclined plane provided in the processed groove to the upper surface of the die body are more than a tangential plane in contact with the inclined plane. It is formed on a surface of an arbitrary shape located outside.
- a die based on a thirteenth aspect of the present invention is the die based on any one of the tenth aspect to the twelfth aspect, wherein the width dimension of the uppermost portion of the processed groove is A, When B is the upper clearance between the inclined planes, approximately 2 ⁇ AZB ⁇ 4.
- the plate-shaped workpiece is formed on the inclined plane and the punch near the bottom of the V-shaped processing groove provided in the die. Since the bending process is performed by sandwiching and locally pressing with the inclined plane prepared in the process, the workpiece is clamped and bent using the entire inclined surface of the die groove. Compared to the case, the applied pressure in the bending process can be reduced.
- a fourteenth aspect of the present invention includes a die having a V-shaped machining groove formed in advance at a target angle, a punch freely engageable with the machining groove, and Therefore, when the workpiece is clamped between the inclined surface of the processing groove and the inclined surface of the punch, the plate-shaped workpiece is bent into a V shape. After slightly overbending the target angle, the workpiece is sandwiched between the inclined surface of the machining groove and the inclined surface of the punch and bent to the target angle.
- a fifteenth aspect of the present invention is a bending die comprising a die having a V-shaped machining groove and a punch that can be engaged with the machining groove, wherein the angle of the machining groove and The tip angle of the punch is formed at the target bending angle of the plate-shaped workpiece, and the tip end R of the punch starts the bending force of the workpiece by the die and the punch. It is formed to have a radius slightly smaller than R of the workpiece when the bending angle first reaches the bending target angle.
- the bending die according to the sixteenth aspect of the present invention is the same as the bending die according to the fifteenth aspect, wherein the tip R of the punch is about 0.8 mm.
- the amount of overbend at the time of bending the workpiece can be reduced, so that the amount of bending return is reduced. Accordingly, the applied pressure can be reduced.
- FIG. 1 is a conceptual and schematic explanatory view of a bending machine according to a first embodiment of the present invention.
- FIG. 2 is a functional block diagram showing functions of the control device.
- FIG. 3 is a flowchart for explaining the operation.
- FIG. 4 is an explanatory diagram of the actual bend line length and bending center of gravity position according to the shape of the workpiece.
- FIG. 5 is an explanatory view of an action in the case of bending a workpiece by a punch and a die according to a second embodiment of the present invention.
- FIG. 6 is an explanatory view showing the behavior of the workpiece when the workpiece is bent by the punch and die.
- FIG. 7 is an explanatory diagram showing the relationship between the bending angle and the applied pressure when bending a workpiece with a punch and a die.
- FIG. 8 is an explanatory view of a workpiece spring-back and spring-in.
- FIG. 9 is an explanatory diagram of a die according to an embodiment of the present invention.
- FIG. 10 is an explanatory diagram of a die according to a third embodiment of the present invention.
- FIG. 11 is an explanatory diagram of a die according to a fourth embodiment of the present invention.
- FIG. 12 is an explanatory diagram of a die according to a fifth embodiment of the present invention.
- FIG. 13 is an explanatory diagram showing the relationship between the bending angle and the pressurizing force when the workpiece is bent by the punch and die.
- FIG. 14 is an explanatory view of a punch and a die according to an embodiment of the present invention.
- FIG. 15 is an explanatory diagram showing the relationship between the bending angle and the pressurizing force when a workpiece is bent by a punch and a die.
- a press brake 1 as an example of a bending machine for performing a bending force check of a plate-like workpiece W includes C-shaped left and right side frames 3.
- An upper table 5 and a lower table 7 are vertically opposed to each other on the front side of the side frame 3.
- a die (lower die) 9 is mounted on the upper part of the lower table 7, and a punch (which performs a bending force check of the workpiece W in cooperation with the die 9 is provided on the lower part of the upper table 5.
- Upper mold) 11 is installed.
- V-shaped machining groove As is well known, a V-shaped machining groove (V-groove) is formed on the upper side of the die 9 for bending the workpiece W, and the tip end of the punch 11 is formed.
- the side (lower end side) is formed in a V shape corresponding to the V groove in the die 9. Therefore, by placing the workpiece W between the die 9 and the punch 11 and engaging the punch 11 and the die 9, the workpiece W can be bent and bent into a V shape. is there.
- the upper table 5 is provided as a ram so as to be movable up and down.
- the left and right side tables 3 are equipped with ram driving means (pressurizing means) 13 of appropriate configuration such as a hydraulic cylinder, a ball screw mechanism, etc. . Therefore, by driving the left and right ram driving means 13 as the pressurizing means and lowering the ram 5, the work W can be pressurized by the die 9 and the punch 11 to be bent. Is.
- position detection means such as a linear sensor that detects the vertical movement positions of the left and right sides of the ram 5 in order to detect the vertical movement position of the punch 11 relative to the die 9. 15 are provided on both the left and right sides.
- appropriate pressure detection means 17 such as a pressure sensor for detecting pressure applied to the workpiece W by the left and right ram drive means (pressurizing means) 13 are separately provided on the left and right sides. Is provided.
- bending angle detection means 19 for detecting the bending angle of the workpiece W is provided at an appropriate number of locations on the lower table 7.
- the press brake 1 is provided with a control device 21 such as a CNC device for controlling the entire operation.
- the ram driving means 13 is controlled under the control of the control device 21 to lower the ram 5 and press the workpiece W on the die 9 into the V groove of the die 9 by the punch 11.
- the bending force of workpiece W will be performed.
- the bending is caused by an air bend.
- the workpiece W is sandwiched by the tip end side of the punch 11, it is a folding cache by bottoming.
- the folding cage that presses the workpiece W more strongly from the bottoming state and transfers the V shape of the die 9 and the punch 11 to the workpiece W is the folding cage by coining.
- the coining force is applied by applying a large pressing force about 5 to 8 times the pressing force at the time of air bending to the workpiece W. Is not necessarily applied to the workpiece W, and an unnecessarily large pressure was applied to the workpiece W. In some cases, the die 9 was damaged.
- the control device 21 is connected to an input means 23 for inputting, for example, die information of the die 9 and punch 11, material information of the workpiece W, and bending information.
- the position detection means 15, the pressure detection means 17 and the bending angle detection means 19 are connected.
- the mold information includes the minute radius of the tip of the punch 11, the angle of the tip, the V width dimension of the V groove in the die 9, the angle of the V groove, the minute radius of the shoulder of the V groove, and the like. It is.
- the material information of the workpiece W is the plate thickness, material, etc., and the bending information is the bending angle, bending length, bending position (positioning position in the left-right direction in the bending machine 1), etc. of the workpiece W.
- the control device 21 includes a database 25, and also includes a search unit 27 that searches the database 25 based on the input information.
- the database 25 the bottoming or coining force of the workpiece W when the bottoming or coining force of the workpiece W such as a test piece is experimentally tested by the punch 11 and the die 9 that make a pair is stored in the database 25.
- the data of the proper pressure per unit length required for is stored.
- the appropriate pressure data is data that associates the die information of punch 11 and die 9 with the material information of workpiece W and plate thickness. Therefore, if the die information such as the die number of the punch 11 and die 9 making a pair or the punch 11 and die 9 are set, and the material information such as the material and thickness of the workpiece W are known, it is appropriate. It is possible to search the pressure data.
- control device 21 is provided with a calculation means 29 for performing various calculations based on various information input from the input means 23 and pressure data retrieved from the database 25.
- control means 31 for controlling the ram driving means 13 based on the calculation result of the calculation means 29 is provided.
- step SI, S2, S3 when mold information, material information and bending information are input from the input means 23 (steps SI, S2, S3), the search of the database 25 is performed by the search means 27 (step Corresponding to the input die (punch 11, die 9) and workpiece W, the appropriate pressing force per unit length when performing the bottoming or coining force check is searched.
- the appropriate pressure per unit length is retrieved as described above, the appropriate pressure and material Based on the bending length of the workpiece W, the total pressurizing force when the workpiece w is bottomed or coined is calculated by the first calculating means 29A in the calculating means 29 (step S5), and the bottom pressure of the workpiece W is calculated.
- the target pressure applied by the left and right ram driving means 13 is calculated by the second calculating means 29B based on the position information (arrangement position information) in the left and right direction for performing the coining force (step S6).
- the target pressure applied by the left and right ram driving means 13 is equal, for example, on the right side of the center.
- the target pressure applied by the right ram drive means 13 is greater than the target pressure applied by the right ram drive means 13. Is.
- the total applied pressure is distributed so that the central force in the left-right direction of the workpiece W is also inversely proportional to the distance to the left and right ram driving means 13.
- step S7 The amount of distortion (distortion) between the left and right side frames 3 due to the reaction force is calculated by the third calculation means 29C, and the inclination angle of the ram 5 is calculated based on the calculation result (step S7).
- the inclination angle of the ram 5 is an inclination angle caused by a reaction force when performing the coining force check of the workpiece W. Therefore, the calculated inclination angle should be corrected in advance. Correct the inclination of ram 5 to the reverse inclination (step S8).
- the correction of the inclination angle of the ram 5 is performed by correcting the inclination of the calculation result by the third calculation means 29C to the reverse inclination, and by controlling and driving the left and right ram drive means 13 individually by the control means 31 based on this correction. It will be
- the inclination angle of the ram 5 can be known based on the detection value of the left and right position detection means 15.
- the left and right ram driving means 13 are respectively operated (driven) under the control of the control device 31 while maintaining the corrected inclination angle.
- the ram 5 is lowered and the bottom W or coining force of the work W is started (step S9).
- the pressure applied by the left and right ram drive means 13 is detected by the pressure detection means 17, respectively, and the force / force that the detected pressure is equal to the target pressure is determined.
- step S10 when the detected pressure and the target pressure are equal, it is assumed that an appropriate pressure is applied to the workpiece W or the coining force. Ending the coining or coining force (step S11).
- the bottom W or coining calorie of the workpiece W is stored in the database 25 in advance! Based on the appropriate pressure per unit length. Because the total applied pressure required for the bottom botmind or coining force of W is obtained, the bottom control or coining force is controlled by pressure control that controls the applied pressure by the left and right ram drive means 13. The workpiece W can be bottomed or coined with a proper pressure at all times, and it is efficient without damaging the die where the pressure is not too small or too large. A bottoming process or coining campaign is performed and obtained.
- the inclination angle of the ram 5 is obtained, and the ram 5 is inclined in advance in reverse so as to correct the inclination angle. Compared with the case of correcting the inclination of ram 5 at the time of Botominda or coining check, it is easier and more accurate to correct the inclination angle of ram 5. It is possible to carry out the Botominda Kaye or coining force with high accuracy.
- the present invention can also be implemented by making appropriate changes, not limited to the embodiments as described above. That is, in the above description, the case where the pressure force data per unit length required for workpiece bottoming or coining is stored in the database is exemplified. However, the following configuration is also possible.
- a calculation means for calculating the pressurizing force required for a single bottoming process or coining process based on punch, die mold information, workpiece material information and bending information is provided.
- the mold information, material information, and bending information are input from the input means 23, and the total applied pressure required for the workpiece bottoming or coining force is calculated.
- the applied pressure required for the right and left pressurizing means 13 is calculated, and the ram inclination is corrected in the same manner as in the above-described embodiment. It is also possible to control the pressure of the right and left pressurizing means 13 with an inclination.
- the total force port pressure is calculated based on the pressure data stored in the database.
- the total pressure can be calculated theoretically by the theoretical formula (empirical formula) stored in the memory in advance.
- the bending line of the work W is not always continuous.
- PI, P2, P3 and hole H are included.
- the lengths of the fold lines corresponding to the protrusions PI, P2, and P3 are Bl, B2, B3, and B4, respectively, and the fold line length A is (B1 + B2 + B3 + B4 ).
- B is the total length of the fold line extending from the projecting portions P1 to P4
- BP is the dimension to the center of the fold line B of the center O force of the bending machine. If the dimensions from one end side of the projecting portion P1 to the center of each fold line Bl, B2, B3, B4 are L1, L2, L3, L4 respectively, the bending center of gravity position AP as a whole is
- the total applied pressure when bending the bending line length A is the bending center of gravity position AP.
- the pressure applied to the right and left pressurizing means 13 is calculated.
- the actual bending length is calculated, the actual bending center of gravity position is calculated, and the left and right pressurizing means 13 are assumed to have a total applied pressure acting on the actual bending center of gravity position.
- the inclination correction of the ram 5 is corrected in accordance with the actual bending process, and a more accurate bending force can be obtained. .
- the force described mainly for correcting the inclination of the ram 5 is the crowning correction of the ram 5 or the lower table 7 (the central portion of the lower table 7 is directed upward).
- the actual bending length and bending It is desirable to correct the crowning by calculating the position of the center of gravity and taking into account the pressure required by the right and left pressure means.
- the die main body 101 used for bending the plate-like workpiece W into a V-shape is provided with a V-shaped machining groove (V-groove) 103.
- the intersecting portion between inclined planes (inclined surfaces) 105 on both sides of the processed groove 103 and the upper surface 107 of the die body 101 is a shoulder 109.
- the shoulder 109 is formed in an arcuate curved surface with a small radius R1 (eg, 0.8 mm).
- R1 small radius
- a small recess may be provided at the bottom of the V groove 103, which is the intersection of the two inclined surfaces 105.
- the punch 111 that can freely engage with the machining groove 103 of the die body 101 has an inclined surface (inclined plane) 113 parallel to the inclined surface 105 of the machining groove 103 on the tip side.
- the angle (tip angle) ⁇ of the tip of the punch 111 is formed to be equal to the angle of the V-groove (processed groove) 103 in the die body 101.
- the tip of the punch 111 is formed into an arcuate curved surface with a small radius R2.
- the width dimension of the punch 111 is formed to be equal to the V width on the upper surface of the processing groove 103 in the die body 101, that is, the distance dimension between the shoulder portions 109.
- the fulcrum of the workpiece W moves from the shoulder 109 in the die body 101 to the inclined surface 105 of the machining groove 103, and the contact position WP between the workpiece W and the inclined surface 105 In a higher position, the workpiece W is in contact (contact) with the inclined surface 113 of the punch 111.
- the bending angle of the workpiece W is This is an angle smaller than the tip angle ⁇ of the machining groove 103 and punch 111 in the case.
- Fig. 13 As shown in Fig. 13 (Fig. 7), as is well known, the relationship between the change in the angle of the workpiece W and the applied pressure from the start of the bending check of the workpiece W is shown. Become. The above-mentioned behavior of the workpiece W and the relationship between the bending angle of the workpiece and the applied pressure vary depending on the workpiece material, plate thickness, punch and die shape, and dimensions. It will occur.
- area A is an air bending area
- B is a bottoming area
- C is a coining area.
- Fig. 7 shows the L curve added to the graph of Fig. 13.
- the bending angle of the workpiece W becomes smaller than the bending angle 90 ° (when the angle of the V groove and punch tip angle in the die is 90 °) and returns to 90 ° again.
- (A) to 6 (C) is a region corresponding to the process. That is, the overbend region.
- the part of W1—W2 is the part that is bent back to close the workpiece W.
- Spring back negative spring back
- the portion W2-W3 is a portion that is deformed so as to come into contact with the inclined surface 113 of the punch 111 by being pressurized in FIG. 6C, and becomes a positive spring back.
- the workpiece W is deformed to reduce the angle (spring go, spring in).
- the die according to the embodiment of the present invention is configured as follows.
- the die body 121 includes inclined planes (inclined surfaces) 125 on both sides near the bottom on the side surfaces on both sides forming the V-shaped machining groove (V groove) 123.
- the upper surface 127 which is the upper surface of the die body 121 is connected by a curved surface 129 connected so as to be in contact with the inclined plane 125 and the upper surface 127.
- the uppermost tangent plane with respect to the curved surface 129 is a plane that coincides with the upper surface 127
- the lowermost tangent plane with respect to the curved surface 129 is a plane that coincides with the inclined plane 125.
- the curved surface 129 is formed on a convex curved surface in which the lower curvature radius R22 "'R2n is gradually larger than the upper curvature radius R21.
- the curvature radius R21"' R2n is a conventional curvature radius R21 "'R2n.
- the radius is larger than the radius of shoulder R in a general die, and is a large radius of about lmm to 10mm.
- an interval (V width of the uppermost portion of the calorific groove 123) between positions where the upper surface 127 of the die body 121 and the curved surface 129 are connected is defined as a dimension (V width dimension) A, and the V groove (processing) Groove) Dimension of the gap between the inclined plane 125 of the 123 and the curved surface 129 (width of the upper part of the inclined plane 125) Dimension)
- B it is set to about 2 ⁇ AZB ⁇ 4.
- the V width A of the V groove 123 in the die body 121 is generally set to about 5 to 8 times the plate thickness t of the target workpiece W, and the bending force of the workpiece W is also set. Since there are many 90 ° bends, the target angle of the V-groove 123 in a die that performs bending force checks such as coining is generally set to 90 °.
- the central force of the tip radius R2 in the punch 111 is also applied to the die body 121.
- a perpendicular is drawn to the inclined plane 125, a large pressure is applied to the region near the perpendicular (stress increases).
- the workpiece W placed on the upper surface 127 of the die body 121 is pressed into the V groove 123 using the punch 111 having the same conditions as described above, and the workpiece W is bent.
- the fulcrum of the workpiece W by the die body 121 contact position between the workpiece W and both side surfaces of the V-groove 123) gradually moves downward along the curved surface 129.
- the workpiece W is clamped by the inclined plane 125 of the V groove 123 in the die body 121 and the inclined surface 113 of the punch 111.
- the punch 111 is further pressed to increase the work pressure. W bending force such as bottoming and coining is performed.
- the bent portion of the workpiece W is initially at the tip end of the punch 111 as shown in FIGS. It can be bent to a radius larger than R2. Therefore, on the both sides of the contact position WP (see Fig. 6) between the inclined surface 105 and the workpiece W on both sides of the V groove 103 in the die 101, the workpiece W is punch 111. (See FIG. 6 (A)), and bending back is performed.
- the curved surface 129 is located outside the tangential plane 125 F in contact with the inclined surface 125 and the curved surface 129.
- the tangential plane 125F force is further away from the upper side. Therefore, the upper side of the curved surface 129 is far away from the inclined surface 113 of the punch 111. Therefore, the position where the workpiece W contacts the curved surface 129 is farther from the inclined surface 113 of the punch 111 than in the case of the inclined surface 105.
- the inclined surfaces 5 on both sides of the V groove 103 are The direction force is delayed in the case where the curved surface 129 is formed on the upper side of the inclined surface 105 (in the case of the configuration shown in FIG. 9) than in the case where the entire surface is formed.
- both sides of the bent portion of the workpiece W are punched after the bending force of the workpiece W has progressed in the configuration of the die body 121 than in the configuration of the die body 101. Bending back is performed in contact with the inclined surface 113 of 111.
- the bending calorie using the die body 121 according to the present embodiment can suppress the energy required for bending back, compared with the case where the general die body 101 is used. It is possible to suppress the pressing force during folding caming and the like.
- the punch 111 and the die body 21 When the bending force of the workpiece W is applied, the three-point bending (air bending) state is maintained, and the contact position between the workpiece W and both sides of the V groove 123 of the die body 121 (die body 121 The support position of the workpiece W) is moved to the bottom side of the V-groove 123, that is, the interval between the support positions is gradually reduced, and finally the inclined plane 125 and the punch 111 provided on the bottom side of the V-groove 123 are provided. The workpiece W is pinched by the inclined plane on the tip side of the slab and pressed strongly locally.
- the starting force of the bending force w of the workpiece W is gradually increased without decreasing the pressing force until the transition to the bottoming and coining processes.
- Increase (power increase tl) Therefore, if the conditions of the punch 111, the die body 121, and the workpiece W are constant, the relationship between the bending angle of the workpiece W and the applied pressure can be uniquely related. Therefore, trial bending is not required for the next bending of the workpiece W under the same conditions, and efficiency can be improved.
- the relationship between the bending angle of the workpiece W and the applied pressure is preferably linear, and can be achieved by optimizing the shape of the curve 129.
- the curvature radius of the curved surface 129 it is possible to make the curvature radius of the curved surface 129 constant in a state where the width dimension B of the inclined plane 125 is kept constant.
- the curvature radius of the curved surface 129 is made constant, the curved surface becomes a curved surface having a large radius and the V width dimension A becomes large, which is not desirable. Therefore, if the curvature radius of the curved surface 129 that slides to reduce the V width dimension A is set to a small constant radius, in this case, the V groove 123 becomes shallower, and the side surface (including the inclined plane 125 and the curved surface 129) that forms the V groove 123 Width) (the dimension from the bottom of the V-groove 123 to the top surface 27) is reduced.
- the bending force of the workpiece W such as bottoming and coining is set by setting the angle of the V groove 123 in the die body 121 and the tip angle of the punch 111 as targets. If this is done, it will follow the tip angle of the V-groove 123 and punch 111 of the die body 121, but it will not be overbended so as to be smaller than the angle of the V-groove 123 and tip angle.
- the bending angle is always larger than the target angle due to the springback, making it difficult to obtain an accurate bending force.
- the curved surface 129 formed on the upper side of the inclined plane 125 provided on the bottom side of the V-groove 123 is a convex curved surface in which the curvature radius on the lower side is larger than the curvature radius on the upper side. Since it is formed, the V-width dimension A in the V-groove 123 can be reduced, and even when the width dimension of the workpiece W to be processed is small, it can be handled.
- FIG. 10 shows a third embodiment.
- the inclined flat surface 125 and the upper surface 127 of the V groove 123 in the die body 121 are connected by an ellipse 131.
- the connection position between the ellipse 131 and the inclined plane 125 is in the vicinity of the middle position of the depth from the upper surface 127 of the V groove 123.
- the curved surface 129 on the upper side of the inclined plane 125 is a convex curved surface, and the same effect as described above can be obtained.
- FIG. 11 shows a fourth embodiment.
- the curved surface 129 between the inclined plane 125 and the upper surface 127 of the V groove 123 in the die body 121 is deleted.
- This is a configuration in which a concave surface 133 having an appropriate shape is formed.
- bending is performed by three points, that is, the shoulder of the V groove 123 (curved surface with a small radius) and the punch 111 (see FIG. 11A).
- the workpiece W is bent, the vicinity of the bent portion of the workpiece W comes into contact with the upper portion of the inclined plane 125, and the workpiece W is connected to the upper portion of the inclined plane 125 in relation to the die body 121.
- the folding cage such as bottoming and coining is caused by the inclined surface 125 on the bottom side of the V groove and the inclined surface 113 on the tip side of the punch 111 in the die body 121.
- the side of the V groove 123 extending from the inclined surface 125 to the upper surface 127 of the die main body 121 is formed in the concave surface portion 133 or the like described above, since the vicinity of the fold line of the W is strongly pressed. It is possible to do.
- the side surface extending from the inclined surface 125 to the upper surface 127 can have any shape positioned outside the tangential plane 125F (see FIG. 9) in contact with the inclined surface 125.
- the shape of the curved surface 129 can be formed in a staircase shape in contact with the ellipse 131. That is, the side surface portion corresponding to the curved surface 129 can be changed into various forms by design change or the like.
- the angle ⁇ of the V groove 203 in the die 201 and the tip angle ⁇ of the punch 211 are bent target angles (for example, 90 °) at which the workpiece W is to be bent. If the workpiece W is bent by this notch 211 and die 201, the workpiece W is initially bent by air bending and moved to the overbend region. Sometimes it is folded to the target folding angle (position B in Figs. 7 and 13). Then, it is bent to an angle smaller than the above target bending angle (see Overbend, Fig. 6 (A)).
- target angles for example, 90 °
- the radius of the bent portion of the workpiece W is equal to the path.
- the radius of the punch 211 is larger than the tip R (R3) (a radius larger than R2 in FIG. 5), and a part of the workpiece W is in contact (contact) with the upper portion of the inclined surface 213 of the punch 211.
- R3 a radius larger than R2 in FIG. 5
- the overbend amount of the work W is determined by the radius (inner diameter, inner R) of the work W when the work W is bent by the air bend and the tip R of the punch 21 1.
- the air of the workpiece W is set under the condition that both the angle of the machining groove 203 of the die 201 and the tip angle of the punch 211 are formed at the workpiece bending target angle. Bending is performed and the tip R of the punch 211 is formed to have a slightly smaller radius than the inner radius R of the workpiece W when the workpiece W is first bent at the target bending angle.
- the overbend amount of the workpiece W is made smaller than the normal general coining process (LI1), for example, as shown by the broken line L12 in FIG.
- the applied pressure during coining caching can be reduced.
- the tip R (R3) of the punch 211 for performing the coining force is generally 0.
- the tip R of the H2 211 is about 0.8 mm (0.7 mm to 0.9 mm)
- the amount of overbend can be kept within an almost constant range with respect to various materials, plate thicknesses and target bending angles. Is. In particular, it has a remarkable effect when the plate thickness of SPCC is 1mm.
- the tip R of the punch 211 is about 0.8 mm or less, the tendency to increase the amount of overbend is strong, and when it is about 0.8 mm or more, overbending may not occur in some cases. Therefore, the tip R of the punch 211 is preferably about 0.8 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05807036.8A EP1834712A4 (en) | 2004-11-17 | 2005-11-16 | CAMBRING METHOD, AND DIE AND CAMERA MACHINE USED FOR THE CAMBRING METHOD |
US11/719,486 US8534105B2 (en) | 2004-11-17 | 2005-11-16 | Bending method, and die and bending machine used for the bending method |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004333594A JP4751052B2 (ja) | 2004-11-17 | 2004-11-17 | ダイ |
JP2004-333594 | 2004-11-17 | ||
JP2004-363445 | 2004-12-15 | ||
JP2004363445 | 2004-12-15 | ||
JP2005244542A JP2006192498A (ja) | 2004-12-15 | 2005-08-25 | 曲げ加工方法及び折曲げ加工機 |
JP2005244464A JP2007054871A (ja) | 2005-08-25 | 2005-08-25 | 折曲げ加工方法及び金型 |
JP2005-244464 | 2005-08-25 | ||
JP2005-244542 | 2005-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006054596A1 true WO2006054596A1 (ja) | 2006-05-26 |
Family
ID=36407137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/021033 WO2006054596A1 (ja) | 2004-11-17 | 2005-11-16 | 曲げ加工方法、曲げ加工方法に使用する金型及び折曲げ加工機 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8534105B2 (ja) |
EP (1) | EP1834712A4 (ja) |
WO (1) | WO2006054596A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106466688A (zh) * | 2015-08-18 | 2017-03-01 | 天津市宇润德金属制品有限公司 | 带钢护角加工工装 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5108260B2 (ja) * | 2006-07-06 | 2012-12-26 | 株式会社アマダ | 曲げ加工機金型レイアウトの活用方法およびその装置 |
AT504640B1 (de) * | 2007-06-20 | 2008-07-15 | Trumpf Maschinen Austria Gmbh | Biegemaschine |
GB201114438D0 (en) * | 2011-08-22 | 2011-10-05 | Airbus Operations Ltd | A method of manufacturing an elongate component |
US9046354B2 (en) * | 2013-02-27 | 2015-06-02 | Summit Esp, Llc | Apparatus, system and method for measuring straightness of components of rotating assemblies |
JP6257971B2 (ja) * | 2013-09-09 | 2018-01-10 | 蛇の目ミシン工業株式会社 | 電動プレス、判断方法およびプログラム |
JP2015051453A (ja) * | 2013-09-09 | 2015-03-19 | 蛇の目ミシン工業株式会社 | 電動プレス、屈曲点検出方法およびプログラム |
JP6257970B2 (ja) * | 2013-09-09 | 2018-01-10 | 蛇の目ミシン工業株式会社 | 電動プレス、屈曲点検出方法およびプログラム |
CN104056881B (zh) * | 2013-10-17 | 2016-02-17 | 攀钢集团攀枝花钢铁研究院有限公司 | 金属板材弯曲装置 |
CN109916736B (zh) * | 2018-11-23 | 2021-06-25 | 北方工业大学 | 板材反复纯弯曲的设备及方法 |
CN113426851B (zh) * | 2021-07-02 | 2023-03-24 | 北京航星机器制造有限公司 | 一种锻件的校形工装及校形方法 |
EP4119338A1 (en) | 2021-07-14 | 2023-01-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method of operating a press apparatus and forming process |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6099013U (ja) * | 1983-07-29 | 1985-07-05 | 高橋 定雄 | 鋼板折曲用金型 |
JPH0263610A (ja) * | 1988-08-26 | 1990-03-02 | Matsushita Electric Works Ltd | プレスブレーキ |
JPH04157022A (ja) | 1990-10-17 | 1992-05-29 | Amada Co Ltd | 折曲げ加工装置 |
JPH05329553A (ja) * | 1992-06-03 | 1993-12-14 | Amada Co Ltd | 折曲げ加工機の加工制御装置 |
JPH0985350A (ja) * | 1995-09-19 | 1997-03-31 | Amada Co Ltd | 折曲げ加工機における曲げ加工方法およびこの方法を用いた折曲げ加工機 |
JPH09295052A (ja) * | 1996-05-10 | 1997-11-18 | Amada Metrecs Co Ltd | プレスブレーキ用ダイ |
JP2003088918A (ja) * | 2001-09-14 | 2003-03-25 | Amada Eng Center Co Ltd | 曲げ加工方法及びその装置 |
JP2003191019A (ja) * | 2001-12-25 | 2003-07-08 | Amada Co Ltd | コイニング曲げ用プレスブレーキ |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3336601A1 (de) | 1983-10-07 | 1985-04-25 | Sven-Gunnar Dipl.-Ing. Uetliburg Jacobson | Langgestreckte kardierplatte |
JPH01186219A (ja) | 1988-01-20 | 1989-07-25 | Matsushita Electric Works Ltd | プレスブレーキ用金型 |
GB2222970B (en) * | 1988-08-03 | 1993-04-14 | Amada Co Ltd | Machine tool |
JP2520368B2 (ja) * | 1993-07-30 | 1996-07-31 | 株式会社東洋工機 | 曲げ加工方法およびその装置 |
US5839310A (en) * | 1994-03-29 | 1998-11-24 | Komatsu, Ltd. | Press brake |
KR100390017B1 (ko) * | 1994-07-08 | 2004-02-11 | 가부시키가이샤 아마다 | 프레스브레이크의절곡가공방법및그방법에서사용하는프레스브레이크 |
JP3219949B2 (ja) | 1994-11-30 | 2001-10-15 | 株式会社アマダ | プレスブレーキの折曲げ加工方法及び同方法に使用するプレスブレーキ |
US5983688A (en) * | 1996-07-08 | 1999-11-16 | Anzai; Tetsuya | Method and apparatus for displaying die layout in press brake and for checking interference |
JP3734315B2 (ja) * | 1996-08-26 | 2006-01-11 | 株式会社小松製作所 | 曲げ加工方法および曲げ加工装置 |
US6047579A (en) * | 1998-04-17 | 2000-04-11 | The Minster Machine Company | RF tag attached to die assembly for use in press machine |
JP4010707B2 (ja) | 1999-06-16 | 2007-11-21 | 株式会社小松製作所 | Acサーボ駆動式鍛圧機械のラム制御装置 |
FR2796320B1 (fr) * | 1999-07-13 | 2001-10-05 | Amada Europ Sa | Presse plieuse a precision amelioree |
JP2001121297A (ja) | 1999-10-25 | 2001-05-08 | Komatsu Ltd | プレス機械のスライド傾き補正装置 |
JP4700801B2 (ja) * | 2000-12-07 | 2011-06-15 | 株式会社アマダ | 曲げ加工方法 |
JP4630533B2 (ja) * | 2002-10-23 | 2011-02-09 | 株式会社アマダ | 曲げ加工機 |
JP4157022B2 (ja) | 2003-11-19 | 2008-09-24 | 三洋化成工業株式会社 | 反応性ホットメルト接着剤 |
JP4321759B2 (ja) | 2003-12-26 | 2009-08-26 | 株式会社アマダ | 曲げ加工装置及びその方法 |
ITPR20040010A1 (it) * | 2004-02-18 | 2004-05-18 | Set 2002 S R L | Procedimento e dispositivo pneumatico per rilevare l'angolo di piega di un foglio di lamiera in una pressa piegatrice. |
-
2005
- 2005-11-16 US US11/719,486 patent/US8534105B2/en active Active
- 2005-11-16 WO PCT/JP2005/021033 patent/WO2006054596A1/ja active Application Filing
- 2005-11-16 EP EP05807036.8A patent/EP1834712A4/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6099013U (ja) * | 1983-07-29 | 1985-07-05 | 高橋 定雄 | 鋼板折曲用金型 |
JPH0263610A (ja) * | 1988-08-26 | 1990-03-02 | Matsushita Electric Works Ltd | プレスブレーキ |
JPH04157022A (ja) | 1990-10-17 | 1992-05-29 | Amada Co Ltd | 折曲げ加工装置 |
JPH05329553A (ja) * | 1992-06-03 | 1993-12-14 | Amada Co Ltd | 折曲げ加工機の加工制御装置 |
JPH0985350A (ja) * | 1995-09-19 | 1997-03-31 | Amada Co Ltd | 折曲げ加工機における曲げ加工方法およびこの方法を用いた折曲げ加工機 |
JPH09295052A (ja) * | 1996-05-10 | 1997-11-18 | Amada Metrecs Co Ltd | プレスブレーキ用ダイ |
JP2003088918A (ja) * | 2001-09-14 | 2003-03-25 | Amada Eng Center Co Ltd | 曲げ加工方法及びその装置 |
JP2003191019A (ja) * | 2001-12-25 | 2003-07-08 | Amada Co Ltd | コイニング曲げ用プレスブレーキ |
Non-Patent Citations (3)
Title |
---|
JAPAN TECHNOLOGY TRANSFER ASSOCIATION: "Press-kata Sekkei Shiryoshu", KABUSHIKI KAISHA OMUSHA SHOTEN, 1 June 1965 (1965-06-01), pages 66 - 71, XP002996729 * |
OTA S.: "Zukai Press-kata Kozo to Sono Sekkei", 3 HAN, THE NIKKAN KOGYO SHINBUN, LTD., 10 December 1988 (1988-12-10), pages 134,'10.4 (2) HYOJUN KEISHIKI', XP002996730 * |
See also references of EP1834712A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106466688A (zh) * | 2015-08-18 | 2017-03-01 | 天津市宇润德金属制品有限公司 | 带钢护角加工工装 |
Also Published As
Publication number | Publication date |
---|---|
US8534105B2 (en) | 2013-09-17 |
EP1834712A1 (en) | 2007-09-19 |
US20090293576A1 (en) | 2009-12-03 |
EP1834712A4 (en) | 2013-08-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2006054596A1 (ja) | 曲げ加工方法、曲げ加工方法に使用する金型及び折曲げ加工機 | |
US8776570B2 (en) | Workpiece bending method and apparatus | |
JP6211755B2 (ja) | 板材の加工装置、押圧金型および金型設置体 | |
KR20190045420A (ko) | 프레스 성형 방법 및 프레스 성형 장치 | |
JP2006320941A (ja) | プレス方法およびプレス型 | |
KR101744799B1 (ko) | 관재 액압성형장치 | |
JP2013180339A (ja) | プレスブレーキおよびワークの曲げ加工方法 | |
JP6198981B1 (ja) | ワークの曲げ加工方法及び装置 | |
JP4479327B2 (ja) | Uoe鋼管製造工程におけるuプレス用ポンチ装置 | |
JP2008018445A (ja) | ワークの角部成形装置 | |
JP2012115852A (ja) | 曲げ加工方法 | |
JP4878806B2 (ja) | ダイ金型,折曲げ加工方法及び装置 | |
EP1277529A1 (en) | Sheet thickness detecting method and device therefor in bending machine, reference inter-blade distance detecting method and device therefor, and bending method and bending device | |
JP4751052B2 (ja) | ダイ | |
JP3268163B2 (ja) | 板の曲げ加工方法 | |
JP2006192498A (ja) | 曲げ加工方法及び折曲げ加工機 | |
JP6364522B2 (ja) | 板材の加工装置および押圧金型 | |
CN204842680U (zh) | 一种z字形支架的复合弯曲模 | |
JP4395308B2 (ja) | 折り曲げ加工機および折り曲げ加工方法 | |
JP5314383B2 (ja) | プレス曲げ機用金型 | |
WO2011096442A1 (ja) | プレスブレーキを用いた折曲げ加工方法および折曲げ加工システム | |
JP2006247742A (ja) | 軸製造方法と、それにより製造された軸およびガイド軸 | |
CN117584526B (zh) | 一种冲压模具以及回弹补偿方法 | |
JP4881621B2 (ja) | ワークの折曲げ加工方法及びプレスブレーキ | |
CN218397847U (zh) | 装配工装 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KM KN KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005807036 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2005807036 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11719486 Country of ref document: US |