WO2017150110A1 - 成形装置及び成形方法 - Google Patents
成形装置及び成形方法 Download PDFInfo
- Publication number
- WO2017150110A1 WO2017150110A1 PCT/JP2017/004546 JP2017004546W WO2017150110A1 WO 2017150110 A1 WO2017150110 A1 WO 2017150110A1 JP 2017004546 W JP2017004546 W JP 2017004546W WO 2017150110 A1 WO2017150110 A1 WO 2017150110A1
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- WIPO (PCT)
- Prior art keywords
- metal pipe
- gas
- pressure
- mold
- pipe material
- Prior art date
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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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
-
- 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
- B21D22/02—Stamping using rigid devices or tools
- B21D22/025—Stamping using rigid devices or tools for tubular articles
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/037—Forming branched tubes
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/043—Means for controlling the axial pusher
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/039—Means for controlling the clamping or opening of the moulds
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/045—Closing or sealing means
Definitions
- the present invention relates to a molding apparatus and a molding method.
- a forming apparatus for forming a metal pipe having a pipe part and a flange part by supplying a gas into a heated metal pipe material and expanding it.
- a molding apparatus shown in Patent Document 1 includes an upper mold and a lower mold that are paired with each other, a gas supply unit that supplies gas into a metal pipe material held between the upper mold and the lower mold, an upper mold, A first cavity part (main cavity) for forming the pipe part and a second cavity part (subcavity) for communicating with the first cavity part and forming a flange part are formed. Yes.
- the pipe part and the flange part can be molded simultaneously by closing the molds and supplying gas into the heated metal pipe material to expand the metal pipe material.
- the metal pipe material is quenched by bringing the expanded metal pipe material into contact with the parts constituting the first cavity portion in the upper mold and the lower mold.
- the adhesion between the metal pipe and the upper mold and the lower mold may be lowered, and there is a problem that the hardenability of the metal pipe varies.
- An object of the present invention is to provide a forming apparatus and a forming method that can suppress the variation in the hardenability of the metal pipe.
- molds the metal pipe which has a pipe part which concerns on 1 side of this invention makes a pair mutually,
- a heating mechanism that moves at least one of the first mold and the second mold in a direction in which the molds are combined with each other and the first mold and the second mold that are held and heated.
- a gas supply unit configured to supply gas into the metal pipe material; and a control unit configured to control driving of the drive mechanism and gas supply of the gas supply unit.
- the control unit includes a first mold and a second mold.
- the control unit causes gas to be supplied from the gas supply unit into the metal pipe material and the metal pipe material is formed into the pipe portion in the first cavity portion
- the gas supply is controlled to maintain the pressure at the first pressure.
- die which forms a 1st cavity part, and a pipe part can be prevented.
- the pressure drop in the pipe portion it is possible to suppress a drop in the force pressing the pipe portion against the first and second molds. Therefore, it is possible to suppress a decrease in the adhesion between the pipe portion and the first and second molds when the metal pipe is formed, and to suppress the occurrence of hardenability variations in the pipe portion of the metal pipe.
- the first mold and the second mold communicate with the first cavity part in addition to the first cavity part, and constitute a second cavity part for molding the flange part of the metal pipe
- the control unit may control the gas supply of the gas supply unit so as to expand a part of the metal pipe material in the second cavity portion when the flange portion is formed from the metal pipe material before the pipe portion is formed. Good.
- a part of the metal pipe material is expanded in the second cavity part before the pipe part is molded, and a part of the expanded metal pipe material is pressed by the first mold and the second mold to be flanged.
- the part can be molded. Thereby, the flange part and pipe part of a desired shape can be shape
- the control unit controls the gas supply of the gas supply unit so as to expand a part of the metal pipe material so as to form the flange portion
- the control unit sets the gas pressure in the metal pipe material to be lower than the first pressure.
- the gas supply by the gas supply unit may be controlled to maintain the pressure of 2.
- the expansion amount of a part of the metal pipe material can be easily adjusted by the low-pressure gas, and the flange portion can be formed to a desired size.
- a pipe portion having a desired shape can be formed with a high-pressure gas regardless of the flange portion. Therefore, the flange portion and the pipe portion having a desired shape can be formed more easily.
- the control unit may control the gas supply unit so that the gas is intermittently supplied when the gas is supplied from the gas supply unit into the metal pipe material.
- the pressure of the gas in the metal pipe material can be easily maintained at a predetermined pressure.
- the gas supply unit has gas accumulation means for accumulating gas, and the control unit supplies the gas accumulated in the gas accumulation means so as to maintain the gas pressure in the metal pipe material at the first pressure.
- the metal pipe material may be supplied. In this case, the pressure of the gas in the metal pipe material can be easily maintained at the first pressure.
- a forming method for forming a metal pipe having a pipe portion wherein a heated metal pipe material is prepared between a first mold and a second mold, By moving at least one of the mold and the second mold in the direction in which the molds are combined, the first cavity part for molding the pipe part is formed between the first mold and the second mold.
- a pipe part is formed in the first cavity part by forming a gas and supplying a gas so as to maintain the pressure in the metal pipe material at the first pressure.
- the pipe part is formed in the first cavity part by supplying gas so that the pressure in the metal pipe material is maintained at the first pressure.
- die which forms a 1st cavity part, and a pipe part can be prevented.
- the pressure drop in the pipe portion it is possible to suppress a drop in the force pressing the pipe portion against the first and second molds. Therefore, a metal pipe can be formed while suppressing a decrease in adhesion between the pipe portion and the first and second molds, and occurrence of variation in hardenability in the pipe portion of the metal pipe can be suppressed.
- FIG. 1 is a schematic configuration diagram of a molding apparatus.
- FIG. 2 is a cross-sectional view of the blow mold along the line II-II shown in FIG. 3A is a view showing a state where the electrode holds the metal pipe material
- FIG. 3B is a view showing a state where the seal member is in contact with the electrode
- FIG. 3C is a view showing the state of the electrode. It is a front view.
- FIG. 4 is a schematic diagram illustrating the configuration of the accumulator of the gas supply unit.
- FIG. 5A is a diagram showing a state in which the metal pipe material is set in the mold in the manufacturing process by the molding apparatus
- FIG. 5B is a diagram in which the metal pipe material is used as the electrode in the manufacturing process by the molding apparatus.
- FIG. 6 is a diagram showing an outline of the blow molding process by the molding apparatus and the subsequent flow.
- FIG. 7 is a timing chart showing the relationship between the pressure detected by the pressure sensor and the gas supply in the blow molding process by the molding apparatus.
- 8 (a) to 8 (d) are diagrams showing the operation of the blow molding die and the change in the shape of the metal pipe material.
- FIG. 9 is a timing chart showing the relationship between the pressure detected by the pressure sensor and the gas supply in the blow molding process according to the comparative example.
- FIG. 10 is a timing chart showing the relationship between the pressure detected by the pressure sensor and the gas supply in the blow molding process according to another example.
- FIGS. 11A to 11C are diagrams showing the operation of the blow molding die and the change in the shape of the metal pipe material according to another example.
- FIG. 1 is a schematic configuration diagram of a molding apparatus.
- a molding apparatus 10 that molds a metal pipe 100 includes an upper mold (first mold) 12 and a lower mold (second mold) 11 that are paired with each other.
- a blow molding die 13 a driving mechanism 80 for moving at least one of the upper die 12 and the lower die 11, and a pipe holding mechanism (holding portion) for holding the metal pipe material 14 between the upper die 12 and the lower die 11.
- the molding apparatus 10 includes a controller 70 that controls the driving mechanism 80, the pipe holding mechanism 30, the heating mechanism 50, and the gas supply of the gas supply unit 60. ing.
- the lower mold (second mold) 11 is fixed to a large base 15.
- the lower mold 11 is composed of a large steel block and includes a cavity (concave portion) 16 on the upper surface thereof. Further, an electrode storage space 11a is provided in the vicinity of the left and right ends of the lower mold 11 (left and right ends in FIG. 1).
- the molding apparatus 10 includes a first electrode 17 and a second electrode 18 that are configured to be movable up and down by an actuator (not shown) in the electrode storage space 11a.
- semicircular arc-shaped concave grooves 17a and 18a corresponding to the lower outer peripheral surface of the metal pipe material 14 are formed, respectively (see FIG. 3C).
- the metal pipe material 14 can be placed so as to fit into the concave grooves 17a and 18a.
- a tapered concave surface 17b is formed on the front surface (surface in the outer side of the mold) of the first electrode 17 so that the periphery thereof is inclined in a tapered shape toward the concave groove 17a, and the front surface of the second electrode 18 is formed.
- a taper concave surface 18b is formed on the outer surface of the mold.
- a cooling water passage 19 is formed in the lower mold 11 and is provided with a thermocouple 21 inserted from below at a substantially central position. The thermocouple 21 is supported by a spring 22 so as to be movable up and down.
- the pair of first and second electrodes 17 and 18 located on the lower mold 11 side constitute a pipe holding mechanism 30, and the metal pipe material 14 can be moved up and down between the upper mold 12 and the lower mold 11. Can support you.
- the thermocouple 21 is merely an example of a temperature measuring unit, and may be a non-contact temperature sensor such as a radiation thermometer or an optical thermometer. If a correlation between the energization time and the temperature can be obtained, the temperature measuring means can be omitted and configured sufficiently.
- the upper mold (first mold) 12 is a large steel block having a cavity (recess) 24 on the lower surface and a cooling water passage 25 built therein.
- the upper end portion of the upper mold 12 is fixed to the slide 82.
- the slide 82 to which the upper die 12 is fixed is configured to be suspended by the pressure cylinder 26 and is guided by the guide cylinder 27 so as not to sway laterally.
- the molding apparatus 10 includes a first electrode 17 and a second electrode 18 that can be moved up and down by an actuator (not shown) in the electrode housing space 12a in the same manner as the lower mold 11.
- the lower surfaces of the first and second electrodes 17 and 18 are respectively formed with semicircular arc-shaped concave grooves 17a and 18a corresponding to the upper outer peripheral surface of the metal pipe material 14 (see FIG. 3C).
- the metal pipe material 14 can be fitted into the concave grooves 17a and 18a.
- the front surface of the first electrode 17 (surface in the outer direction of the mold) is formed with a tapered concave surface 17b whose periphery is inclined in a tapered shape toward the concave groove 17a, and the front surface of the second electrode 18 ( A taper concave surface 18b is formed on the outer surface of the mold). Therefore, the pair of first and second electrodes 17 and 18 located on the upper mold 12 side also constitute the pipe holding mechanism 30, and the metal pipe material 14 is moved up and down by the pair of upper and lower first and second electrodes 17 and 18. When sandwiched from the direction, the outer circumference of the metal pipe material 14 can be surrounded so as to be in close contact with the entire circumference.
- the drive mechanism 80 includes a slide 82 that moves the upper mold 12 so that the upper mold 12 and the lower mold 11 are aligned with each other, a drive unit 81 that generates a drive force for moving the slide 82, and the drive unit 81. And a servo motor 83 for controlling the amount of fluid.
- the drive unit 81 is configured by a fluid supply unit that supplies a fluid for driving the pressure cylinder 26 (operating oil when a hydraulic cylinder is used as the pressure cylinder 26) to the pressure cylinder 26.
- the control unit 70 can control the movement of the slide 82 by controlling the amount of fluid supplied to the pressurizing cylinder 26 by controlling the servo motor 83 of the driving unit 81.
- the drive part 81 is not restricted to what provides a drive force to the slide 82 via the pressurization cylinder 26 as mentioned above.
- the drive unit 81 may mechanically connect a drive mechanism to the slide 82 and apply the drive force generated by the servo motor 83 directly or indirectly to the slide 82.
- an eccentric shaft For example, an eccentric shaft, a drive source (for example, a servo motor and a reducer) that applies a rotational force that rotates the eccentric shaft, and a conversion unit that converts the rotational motion of the eccentric shaft into a linear motion and moves the slide (for example, Or a connecting rod or an eccentric sleeve).
- the drive unit 81 may not include the servo motor 83.
- FIG. 2 is a cross-sectional view of the blow molding die 13 taken along the line II-II shown in FIG. As shown in FIG. 2, both the upper surface of the lower mold 11 and the lower surface of the upper mold 12 are provided with steps.
- a step is formed by the first protrusion 11b, the second protrusion 11c, the third protrusion 11d, and the fourth protrusion 11e.
- a first protrusion 11b and a second protrusion 11c are formed on the right side of the cavity 16 (the right side in FIG. 2 and the back side in FIG. 1), and the first protrusion 11b and the second protrusion 11c are formed on the left side (left side in FIG. 2, front side in FIG. 1).
- Three protrusions 11d and a fourth protrusion 11e are formed.
- the second protrusion 11c is located between the cavity 16 and the first protrusion 11b.
- the third protrusion 11d is located between the cavity 16 and the fourth protrusion 11e.
- Each of the second protrusion 11c and the third protrusion 11d protrudes closer to the upper mold 12 than the first protrusion 11b and the fourth protrusion 11e.
- the first protrusion 11b and the fourth protrusion 11e have substantially the same amount of protrusion from the reference line LV2
- the second protrusion 11c and the third protrusion 11d have substantially the same amount of protrusion from the reference line LV2.
- a step is formed on the lower surface of the upper mold 12 by the first protrusion 12b, the second protrusion 12c, the third protrusion 12d, and the fourth protrusion 12e.
- a first protrusion 12b and a second protrusion 12c are formed on the right side (right side in FIG. 2) of the cavity 24, and a third protrusion 12d and a fourth protrusion 12e are formed on the left side (left side in FIG. 2) of the cavity 24.
- the second protrusion 12c is located between the cavity 24 and the first protrusion 12b.
- the third protrusion 12d is located between the cavity 24 and the fourth protrusion 12e.
- first protrusion 12b and the fourth protrusion 12e protrudes closer to the lower mold 11 than the second protrusion 12c and the third protrusion 12d.
- the first protrusion 12b and the fourth protrusion 12e have substantially the same amount of protrusion from the reference line LV1
- the second protrusion 12c and the third protrusion 12d have substantially the same amount of protrusion from the reference line LV1.
- the first protrusion 12b of the upper mold 12 is opposed to the first protrusion 11b of the lower mold 11, and the second protrusion 12c of the upper mold 12 is opposed to the second protrusion 11c of the lower mold 11.
- the cavity 24 is opposed to the cavity 16 of the lower mold 11
- the third protrusion 12d of the upper mold 12 is opposed to the third protrusion 11d of the lower mold 11
- the fourth protrusion 12e of the upper mold 12 is the lower mold. 11 is opposed to the fourth protrusion 11e.
- the amount of protrusion of the first protrusion 12b relative to the second protrusion 12c in the upper mold 12 is the amount of protrusion of the second protrusion 11c relative to the first protrusion 11b in the lower mold 11. It is larger than the amount of protrusion of the third protrusion 11d with respect to the fourth protrusion 11e.
- a main cavity portion (first cavity portion) MC is formed between the surface that becomes the line LV1 and the surface of the cavity 16 of the lower mold 11 (the surface that becomes the reference line LV2). Further, a sub-cavity portion (second cavity) communicating with the main cavity portion MC and having a smaller volume than the main cavity portion MC is provided between the second protrusion 12c of the upper die 12 and the second protrusion 11c of the lower die 11. Cavity part) SC1 is formed.
- the third protrusion 12d of the upper mold 12 and the third protrusion 11d of the lower mold 11 communicates with the main cavity part MC and has a sub-cavity part (second cavity) having a smaller volume than the main cavity part MC.
- Cavity part) SC2 is formed.
- the main cavity portion MC is a portion for forming the pipe portion 100a in the metal pipe 100
- the sub-cavity portions SC1 and SC2 are portions for forming the flange portions 100b and 100c in the metal pipe 100, respectively (FIGS. 8C and 8C). d)).
- FIGS. 8C and 8D when the lower mold 11 and the upper mold 12 are combined and completely closed (when fitted), the main cavity portion MC and the subcavity portion SC1. , SC2 are sealed in the lower mold 11 and the upper mold 12.
- the heating mechanism 50 includes a power source 51, a lead wire 52 extending from the power source 51 and connected to the first electrode 17 and the second electrode 18, and a switch interposed in the lead wire 52. 53.
- the control unit 70 can heat the metal pipe material 14 to the quenching temperature (AC3 transformation point temperature or higher) by controlling the heating mechanism 50.
- Each of the pair of gas supply mechanisms 40 includes a cylinder unit 42, a cylinder rod 43 that moves forward and backward in accordance with the operation of the cylinder unit 42, and a seal member 44 that is coupled to the tip of the cylinder rod 43 on the pipe holding mechanism 30 side.
- the cylinder unit 42 is mounted and fixed on the base 15 via a block 41.
- a tapered surface 45 is formed at the tip of each seal member 44 so as to be tapered.
- One tapered surface 45 is configured to be able to be fitted and contacted with the tapered concave surface 17b of the first electrode 17, and the other tapered surface 45 is just fitted and contacted with the tapered concave surface 18b of the second electrode 18. It is comprised in the shape which can be performed (refer FIG. 3).
- the seal member 44 extends from the cylinder unit 42 side toward the tip. Specifically, as shown in FIGS. 3A and 3B, a gas passage 46 through which the high-pressure gas supplied from the gas supply unit 60 flows is provided.
- the gas supply unit 60 includes a gas source 61, an accumulator 62 that stores the gas supplied by the gas source 61, and a first extending from the accumulator 62 to the cylinder unit 42 of the gas supply mechanism 40.
- a tube 63, a pressure control valve 64 and a switching valve 65 interposed in the first tube 63, a second tube 67 extending from the accumulator 62 to the gas passage 46 formed in the seal member 44, and A pressure control valve 68 and a check valve 69 provided in the second tube 67 are provided.
- the pressure control valve 64 serves to supply the cylinder unit 42 with a gas having an operating pressure adapted to the pressing force of the seal member 44 against the metal pipe material 14.
- the check valve 69 serves to prevent the gas from flowing back in the second tube 67.
- the accumulator 62 has gas tanks 111A to 111D which are gas storage means for storing gas, and on / off valves 112A to 112D whose on / off is controlled by the control unit 70.
- the gas tank 111A is connected to the gas source 61 and connected to the second tube 67 via the on / off valve 112A.
- each of the gas tanks 111B to 111D is connected to the gas source 61 and is connected to the second tube 67 via the corresponding on / off valves 112B to 112D.
- the supply of the gas supplied from the gas source 61 and accumulated in the gas tanks 111A to 111D to the second tube 67 is controlled by the corresponding on / off valves 112A to 112D.
- the on / off valves 112A to 112D are independently controlled by the control unit 70.
- the gas pressures accumulated in the gas tanks 111A and 111B are the same, and the gas pressures accumulated in the gas tanks 111C and 111D are the same.
- the gas accumulated in the gas tanks 111 ⁇ / b> A and 111 ⁇ / b> B is a gas (hereinafter referred to as a low-pressure gas) having an operating pressure for expanding the portions 14 a and 14 b (see FIG. 8B) of the metal pipe material 14.
- the gas accumulated in the gas tanks 111C and 111D is a gas (hereinafter referred to as a high pressure gas) having an operating pressure for forming the pipe portion 100a (see FIG. 8D) of the metal pipe 100.
- the pressure of the high-pressure gas (first pressure P1, see FIG. 7) is about 2 to 5 times the pressure of the low-pressure gas (second pressure P2, see FIG. 7), for example.
- Each of the first pressure P1 and the second pressure P2 may not be a pressure value indicating a certain point.
- each of the first pressure P1 and the second pressure P2 is preferably within a range of 80% to 120% from the reference pressure value.
- the first pressure P1 is preferably in the range of 8 MPa to 12 MPa.
- the second tube 67 has a first supply line L1 that bifurcates from the check valve 69 and extends to one gas supply mechanism 40, and a second supply line L2 that extends to the other gas supply mechanism 40.
- a pressure sensor 91 that detects the pressure of the gas flowing through the lines L1 and L2 is attached to each of the first supply line L1 and the second supply line L2.
- the control unit 70 controls the on / off of the on / off valves 112A to 112D of the accumulator 62 and the on / off of the pressure control valve 68 in accordance with the gas pressure change detected by the pressure sensor 91. At this time, the control unit 70 intermittently switches on / off of the on / off valves 112A to 112D based on the detection result of the pressure sensor 91, and controls the gas supply of the gas supply unit 60. Thus, the control part 70 controls the gas supply of the gas supply part 60, and the pressure of the gas in the metal pipe material 14 at the time of expansion
- the control unit 70 controls the pressure control valve 68 to be turned off. Then, when the pressure of the gas in the metal pipe material 14 reaches the minimum value within the range defined as the first pressure P1, the control unit 70 controls the pressure control valve 68 to be turned on.
- the control unit 70 acquires temperature information from the thermocouple 21 by transmitting information from (A) shown in FIG. 1, and controls the pressurizing cylinder 26, the switch 53, and the like.
- the water circulation mechanism 72 includes a water tank 73 that stores water, a water pump 74 that pumps up and pressurizes the water stored in the water tank 73 and sends the water to the cooling water passage 19 of the lower mold 11 and the cooling water passage 25 of the upper mold 12. It consists of a pipe 75. Although omitted, a cooling tower for lowering the water temperature and a filter for purifying water may be interposed in the pipe 75.
- FIG. 5 shows a process from a pipe feeding process in which a metal pipe material 14 as a material is fed to an energization heating process in which the metal pipe material 14 is energized and heated.
- a hardened metal pipe material 14 of a steel type is prepared.
- the metal pipe material 14 is placed (introduced) on the first and second electrodes 17 and 18 provided on the lower mold 11 side using, for example, a robot arm or the like.
- the control unit 70 controls the pipe holding mechanism 30 to cause the pipe holding mechanism 30 to hold the metal pipe material 14.
- an actuator (not shown) that allows the first electrode 17 and the second electrode 18 to move forward and backward is operated, and the first and second electrodes 17 positioned above and below each other. , 18 are brought into close contact with each other. By this contact, both ends of the metal pipe material 14 are sandwiched by the first and second electrodes 17 and 18 from above and below.
- this clamping is performed in such a manner that the metal pipe material 14 is in close contact with each other due to the presence of the concave grooves 17a and 18a formed in the first and second electrodes 17 and 18, respectively.
- the configuration is not limited to the configuration in which the metal pipe material 14 is in close contact with the entire circumference, and may be a configuration in which the first and second electrodes 17 and 18 are in contact with a part of the metal pipe material 14 in the circumferential direction. .
- the controller 70 heats the metal pipe material 14 by controlling the heating mechanism 50. Specifically, the control unit 70 turns on the switch 53 of the heating mechanism 50. If it does so, electric power will be supplied to the metal pipe material 14 from the power supply 51, and metal pipe material 14 itself heat
- FIG. 6 shows the outline of the blow molding process by the molding apparatus and the subsequent flow.
- the blow molding die 13 is closed with respect to the heated metal pipe material 14, and the metal pipe material 14 is disposed and sealed in the cavity of the blow molding die 13.
- the cylinder unit 42 of the gas supply mechanism 40 is operated to seal both ends of the metal pipe material 14 with the seal member 44 (see also FIG. 3).
- the blow molding die 13 is closed and gas is blown into the metal pipe material 14 to form the metal pipe material 14 softened by heating so as to conform to the shape of the cavity (specific metal pipe material 14 Will be described later).
- the gas supplied into the metal pipe material 14 is thermally expanded. Therefore, for example, the supplied gas is compressed air or compressed nitrogen gas, and the metal pipe material 14 at 950 ° C. is easily expanded by the thermally expanded compressed air, whereby the metal pipe 100 can be obtained.
- austenite transforms to martensite (hereinafter, austenite transforms to martensite is referred to as martensite transformation).
- cooling may be performed by supplying a cooling medium to the metal pipe 100 instead of or in addition to mold cooling.
- the metal pipe material 14 is brought into contact with the mold (upper mold 12 and lower mold 11) until the temperature at which martensitic transformation begins, and then the mold is opened and the cooling medium (cooling gas) is used as the metal pipe material.
- the martensitic transformation may be generated by spraying on 14.
- FIG. 7 is a diagram showing the relationship between the pressure detected by the pressure sensor and the gas supply in the blow molding process by the molding apparatus.
- (a) shows the time change of the detected pressure of the pressure sensor 91
- (b) shows the supply timing of the low pressure gas
- (c) shows the supply timing of the high pressure gas.
- the heated metal pipe material 14 is prepared between the cavity 24 of the upper mold 12 and the cavity 16 of the lower mold 11 in the period T1 of FIG.
- the metal pipe material 14 is supported by the second protrusion 11 c and the third protrusion 11 d of the lower mold 11. Note that the distance between the second protrusion 12c of the upper mold 12 and the second protrusion 11c of the lower mold 11 in the period T1 is D1 (see FIG. 8A).
- the upper mold 12 is moved in a direction to match the lower mold 11 by the drive mechanism 80. Accordingly, in the period T3 after the period T2 shown in FIG. 7, the upper mold 12 and the lower mold 11 are not completely closed as shown in FIG. 8B, and the second protrusion 12c of the upper mold 12 The distance from the second protrusion 11c of the lower mold 11 is set to D2 (D2 ⁇ D1).
- a main cavity portion MC is formed between the surface of the cavity 24 at the reference line LV1 and the surface of the cavity 16 at the reference line LV2.
- a subcavity SC1 is formed between the second protrusion 12c of the upper mold 12 and the second protrusion 11c of the lower mold 11, and the third protrusion 12d of the upper mold 12 and the third protrusion 11d of the lower mold 11 are formed.
- a sub cavity portion SC2 is formed therebetween.
- the main cavity portion MC and the subcavity portions SC1 and SC2 are in communication with each other.
- the inner edge of the first protrusion 12b of the upper mold 12 and the outer edge of the second protrusion 11c of the lower mold 11 are in contact with each other, and the inner edge of the fourth protrusion 12e of the upper mold 12 and the third protrusion of the lower mold 11 are contacted.
- the main edge MC and the subcavities SC1 and SC2 are hermetically sealed with respect to the outside.
- a space (gap) is provided between the first protrusion 12b of the upper mold 12 and the first protrusion 11b of the lower mold 11, and between the fourth protrusion 12e of the upper mold 12 and the fourth protrusion 11e of the lower mold 11, A space (gap) is provided between the first protrusion 12b of the upper mold 12 and the first protrusion 11b of the lower mold 11, and between the fourth protrusion 12e of the upper mold 12 and the fourth protrusion 11e of the lower mold 11, A space (gap) is provided.
- the low pressure gas is supplied by the gas supply unit 60 into the metal pipe material 14 softened by the heating by the heating mechanism 50.
- This low-pressure gas is gas accumulated in the gas tanks 111 ⁇ / b> A and 111 ⁇ / b> B included in the accumulator 62 of the gas supply unit 60.
- the supply of low-pressure gas by the gas supply unit 60 is controlled by the on / off valves 112A and 112B and the pressure control valve 68.
- the gas supply unit 60 intermittently supplies the low pressure gas into the metal pipe material 14 so as to maintain the pressure of the low pressure gas detected by the pressure sensor 91 at the second pressure P2. Supply.
- the metal pipe material 14 expands in the main cavity portion MC as shown in FIG. 8B. Further, a part (both side portions) 14a and 14b of the metal pipe material 14 expands so as to enter the subcavity portions SC1 and SC2 communicating with the main cavity portion MC, respectively.
- the upper mold 12 is moved by the drive mechanism 80, and the distance between the second protrusion 12c of the upper mold 12 and the second protrusion 11c of the lower mold 11 is shown in FIG. 8C.
- the upper mold 12 and the lower mold 11 are fitted (clamped) such that D3 (D3 ⁇ D2).
- D3 D3 ⁇ D2
- the first protrusion 12b of the upper mold 12 and the first protrusion 11b of the lower mold 11 are in close contact with each other without a gap
- the fourth protrusion 12e of the upper mold 12 and the fourth protrusion 11e of the lower mold 11 are spaced from each other. Adhere closely.
- the parts 14a and 14b of the expanded metal pipe material 14 are pressed by the upper mold 12 and the lower mold 11, and the flange portion 100b of the metal pipe 100 is formed in the subcavity SC1, and the sub The flange portion 100c of the metal pipe 100 is formed in the cavity portion SC2.
- the flange portions 100b and 100c are formed by folding a part of the metal pipe material 14 along the longitudinal direction of the metal pipe 100 (see FIG. 6).
- high-pressure gas is supplied by the gas supply part 60 into the metal pipe material 14 after the flange parts 100b and 100c are formed.
- This high-pressure gas is gas accumulated in the gas tanks 111 ⁇ / b> C and 111 ⁇ / b> D included in the accumulator 62 of the gas supply unit 60.
- Supply of the high-pressure gas by the gas supply unit 60 is controlled by the on / off valves 112 ⁇ / b> C and 112 ⁇ / b> D and the pressure control valve 68.
- the gas supply unit 60 intermittently supplies the high-pressure gas into the metal pipe material 14 so as to maintain the pressure of the high-pressure gas detected by the pressure sensor 91 at the first pressure P1.
- Supply By supplying such a high-pressure gas, the metal pipe material 14 in the main cavity part MC expands, and the pipe part 100a of the metal pipe 100 is formed as shown in FIG. Note that the high-pressure gas supply time in the period T5 is longer than the low-pressure gas supply time in the period T3.
- the metal pipe material 14 sufficiently expands to reach every corner of the main cavity portion MC, and the pipe portion 100a conforms to the shape of the main cavity portion MC defined by the upper mold 12 and the lower mold 11. become.
- the metal pipe 100 having the pipe portion 100a and the flange portions 100b and 100c can be finished by passing through the periods T1 to T5 described above.
- the time from the blow molding of the metal pipe material 14 to the completion of the molding of the metal pipe 100 is approximately several seconds to several tens of seconds although it depends on the type of the metal pipe material 14.
- the main cavity portion MC is configured to have a rectangular cross section. Therefore, the metal pipe material 14 is blow-molded according to the shape, so that the pipe portion 100a is a rectangular tube. It is formed into a shape.
- the shape of the main cavity portion MC is not particularly limited, and any shape such as a circular cross section, an elliptical cross section, or a polygonal cross section may be employed in accordance with a desired shape.
- the amount of expansion of the portions 14a and 14b of the metal pipe material 14 entering the subcavities SC1 and SC2, respectively, is smaller than that of the molding method of the present embodiment.
- the portions 14a and 14b of the metal pipe material 14 expanded in this way are pressed by the upper mold 12 and the lower mold 11, the flange portions 100b and 100c do not have a sufficient size.
- the pressure in the metal pipe material 14 is temporarily set to the first pressure P1, and then the gas supply in the gas supply unit is stopped. That is, once the pressure in the metal pipe material 14 is set to the first pressure P1, even if the pressure in the metal pipe material 14 falls outside the range of the first pressure P1, the gas supply unit supplies the gas again. Do not do.
- the first and first pipe portions are formed by the gas as the pressure of the gas in the pipe portion 100a of the metal pipe 100 formed in the main cavity portion MC decreases. The pressing force against the mold 2 is reduced. Thereby, when the pipe part 100a is quenched by the upper mold 12 and the lower mold 11, the adhesion between the metal pipe 100 and the upper mold 12 and the lower mold 11 is lowered, and the hardenability of the metal pipe 100 varies. Will occur.
- the control unit 70 supplies the high-pressure gas from the gas supply unit 60 into the metal pipe material 14 and pipes the metal pipe material 14 in the main cavity portion MC.
- the gas supply is controlled so that the pressure in the metal pipe material 14 is maintained at the first pressure P1.
- type 11 which form the main cavity part MC, and the pipe part 100a can be prevented.
- the pressure drop in the pipe part 100a it is possible to suppress a reduction in the force pressing the pipe part 100a against the upper mold 12 and the lower mold 11. Therefore, when the metal pipe 100 is formed, it is possible to suppress a decrease in adhesion between the pipe portion 100a and the upper mold 12 and the lower mold 11, and to suppress occurrence of variation in hardenability in the pipe portion 100a of the metal pipe 100.
- the upper die 12 and the lower die 11 communicate with the main cavity portion MC in addition to the main cavity portion MC, and constitute sub-cavity portions SC1 and SC2 for forming the flange portions 100b and 100c of the metal pipe 100, and are controlled.
- the portion 70 expands the portions 14 and 14b of the metal pipe material 14 into the subcavities SC1 and SC2 when the flange portions 100b and 100c are formed from the metal pipe material 14 before the pipe portion 100a is formed.
- parts 14a and 14b of the metal pipe material 14 are expanded in the subcavities SC1 and SC2, respectively, before the pipe part 100a is molded.
- the flange portions 100b and 100c are formed by pressing the portions 14a and 14b with the upper die 12 and the lower die 11. It is possible. Thereby, the flange parts 100b and 100c of a desired shape and the pipe part 100a can be shape
- the control unit 70 controls the gas supply of the gas supply unit 60 so as to expand the portions 14a and 14b of the metal pipe material 14 so as to form the flange portions 100b and 100c
- the low-pressure gas in the metal pipe material 14 is controlled. Since the gas supply by the gas supply unit 60 is controlled so as to maintain the second pressure P2 lower than the first pressure P1, the expansion of the portions 14a and 14b of the metal pipe material 14 by the stable low-pressure gas The amount can be easily adjusted, and the flange portions 100b and 100c can be formed to a desired size.
- the pipe portion 100a having a desired shape can be formed with high-pressure gas regardless of the flange portions 100b and 100c. Therefore, the flange portions 100b and 100c and the pipe portion 100a having desired shapes can be formed more easily.
- control unit 70 controls the gas supply unit 60 so as to supply gas intermittently when supplying the low pressure gas or the high pressure gas from the gas supply unit 60 into the metal pipe material 14,
- the gas pressure can be easily maintained at the first pressure P1 or the second pressure P2.
- the gas supply unit 60 includes gas tanks 111A to 111D, which are gas storage means for storing gas, and the control unit 70 maintains the pressure of the gas in the metal pipe material 14 at the first pressure P1. Since the gas accumulated in at least one of the gas tanks 111C and 111D is supplied into the metal pipe material 14, the pressure of the gas in the metal pipe material 14 can be easily maintained at the first pressure P1.
- the metal pipe 100A without the flange portions 100b and 100c will be described with reference to FIGS. 10 and 11A to 11C.
- the first protrusion 11b, the second protrusion 11c, the third protrusion 11d, and the fourth protrusion 11e are not provided.
- the lower mold 11 and the upper mold 12 on which the first protrusion 12b, the second protrusion 12c, the third protrusion 12d, and the fourth protrusion 12e are not provided are used. Since the metal pipe 100A is not provided with a flange portion, the accumulator 62 may not have the gas tanks 111A and 111B and the on / off valves 112A and 112B.
- the heated metal pipe material 14 is prepared between the cavity 24 of the upper mold 12 and the cavity 16 of the lower mold 11 in the period T1 of FIG. .
- the metal pipe material 14 is placed on the cavity 24 of the lower mold 11.
- the upper mold 12 is moved in a direction to match the lower mold 11 by the drive mechanism 80.
- the upper mold 12 and the lower mold 11 are brought into close contact with each other to form a sealed main cavity portion MC.
- high-pressure gas is supplied into the metal pipe material 14 by the gas supply unit 60.
- the high-pressure gas is intermittently supplied into the metal pipe material 14 so as to maintain the pressure in the metal pipe material 14 at the first pressure P1.
- the metal pipe material 14 in the main cavity portion MC expands, and a metal pipe 100A having no flange portion is formed as shown in FIG.
- the high pressure gas is intermittently supplied into the metal pipe material 14, thereby preventing a pressure drop in the metal pipe 100A. It is possible to suppress a decrease in the force pressed against the lower mold 11. Therefore, it is possible to suppress occurrence of variation in hardenability in the metal pipe 100A.
- the molding apparatus 10 in the above embodiment does not necessarily have the heating mechanism 50, and the metal pipe material 14 may already be heated.
- the gas supply of the gas supply unit 60 may not be intermittently controlled by the control unit 70, or may be continuous.
- the control unit 70 it is preferable to control the pressure in the pipe part 100a by the pressure control valve 68 grade
- the pressure of the low-pressure gas in the metal pipe material 14 need not be maintained at the second pressure P2.
- the gas supply of the gas supply unit 60 may be controlled similarly to the comparative example. That is, in the period T3, the control unit 70 may perform control so that the gas supply from the gas supply unit 60 is performed until the gas reaches a predetermined value.
- the gas source 61 may include both a high-pressure gas source for supplying high-pressure gas and a low-pressure gas source for supplying low-pressure gas.
- the gas may be supplied from the high pressure gas source or the low pressure gas source to the gas supply mechanism 40 according to the situation by the control of the gas source 61 of the gas supply unit 60 by the control unit 70.
- the gas source 61 includes a high-pressure gas source and a low-pressure gas source
- the accumulator 62 (or the gas tanks 111A to 111D) may not be included in the gas supply unit 60.
- the accumulator 62 includes four gas tanks 111A to 111D, the number of gas tanks included in the accumulator 62 may be three or less, or five or more. Further, all the pressures of the gas accumulated in the gas tanks 111A to 111D may be the first pressure P1. In this case, in the period T3, the portions 14a and 14b of the metal pipe material 14 may be expanded using, for example, a low-pressure gas source.
- the drive mechanism 80 moves only the upper mold 12, but the lower mold 11 may move in addition to the upper mold 12 or instead of the upper mold 12.
- the lower mold 11 moves, the lower mold 11 is not fixed to the base 15 but attached to the slide of the drive mechanism 80.
- the metal pipe 100 according to the above embodiment may have a flange portion on one side thereof.
- the number of subcavities formed by the upper mold 12 and the lower mold 11 is one.
- the metal pipe material 14 prepared between the upper mold 12 and the lower mold 11 may have an oval cross-sectional shape having a longer diameter in the left-right direction than in the vertical direction. Thereby, a part of the metal pipe material 14 may easily enter the subcavities SC1 and SC2.
- the metal pipe material 14 may be subjected to a bending process (pre-bending process) in advance along the axial direction.
- the molded metal pipe 100 has a flanged and bent cylindrical shape.
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Abstract
Description
図1は、成形装置の概略構成図である。図1に示されるように、金属パイプ100(図6参照)を成形する成形装置10は、互いに対となる上型(第1の金型)12及び下型(第2の金型)11からなるブロー成形金型13と、上型12及び下型11の少なくとも一方を移動させる駆動機構80と、上型12と下型11との間で金属パイプ材料14を保持するパイプ保持機構(保持部)30と、パイプ保持機構30で保持されている金属パイプ材料14に通電して加熱する加熱機構(加熱部)50と、上型12及び下型11の間に保持され加熱された金属パイプ材料14内に高圧ガス(気体)を供給するための気体供給部60と、パイプ保持機構30で保持された金属パイプ材料14内に気体供給部60からの気体を供給するための一対の気体供給機構40,40と、ブロー成形金型13を強制的に水冷する水循環機構72とを備える。また、成形装置10は、上記駆動機構80の駆動、上記パイプ保持機構30の駆動、上記加熱機構50の駆動、及び上記気体供給部60の気体供給をそれぞれ制御する制御部70を備えて構成されている。
次に、成形装置10を用いた金属パイプの成形方法について説明する。図5は材料としての金属パイプ材料14を投入するパイプ投入工程から、金属パイプ材料14に通電して加熱する通電加熱工程までを示す。最初に焼入れ可能な鋼種の金属パイプ材料14を準備する。図5(a)に示すように、この金属パイプ材料14を、例えばロボットアーム等を用いて、下型11側に備わる第1,第2電極17,18上に載置(投入)する。第1,第2電極17,18には凹溝17a,18aがそれぞれ形成されているので、当該凹溝17a,18aによって金属パイプ材料14が位置決めされる。次に、制御部70(図1参照)は、パイプ保持機構30を制御することによって、当該パイプ保持機構30に金属パイプ材料14を保持させる。具体的には、図5(b)のように、第1電極17、第2電極18を進退動可能としているアクチュエータ(図示しない)を作動させ、各上下に位置する第1,第2電極17,18を接近・当接させる。この当接によって、金属パイプ材料14の両方の端部は、上下から第1,第2電極17,18によって挟持される。また、この挟持は第1,第2電極17,18にそれぞれ形成される凹溝17a,18aの存在によって、金属パイプ材料14の全周に渡って密着するような態様で挟持されることとなる。ただし、金属パイプ材料14の全周に渡って密着する構成に限られず、金属パイプ材料14の周方向における一部に第1,第2電極17,18が当接するような構成であってもよい。
Claims (6)
- パイプ部を有する金属パイプを成形する成形装置であって、
互いに対となり、前記パイプ部を成形するための第1のキャビティ部を構成する第1の金型及び第2の金型と、
前記第1の金型及び前記第2の金型の少なくとも一方を、金型同士が合わさる方向に移動させる駆動機構と、
前記第1の金型及び前記第2の金型の間に保持され加熱された金属パイプ材料内に気体を供給する気体供給部と、
前記駆動機構の駆動及び前記気体供給部の気体供給をそれぞれ制御する制御部と、を備え、
前記制御部は、前記第1の金型及び前記第2の金型が互いに合わさった状態において、前記気体供給部から前記金属パイプ材料内に気体を供給させて前記第1のキャビティ部内における前記金属パイプ材料を前記パイプ部に成形させる際に、前記金属パイプ材料内の圧力を第1の圧力に維持するように前記気体供給部の気体供給を制御する、
成形装置。 - 前記第1の金型及び前記第2の金型は、前記第1のキャビティ部に加えて、前記第1のキャビティ部と連通し、前記金属パイプのフランジ部を成形するための第2のキャビティ部を構成し、
前記制御部は、前記パイプ部の成形前に前記金属パイプ材料から前記フランジ部を成形する際に、前記第2のキャビティ部内に前記金属パイプ材料の一部を膨張させるように前記気体供給部の気体供給を制御する、請求項1記載の成形装置。 - 前記制御部は、前記フランジ部を成形すべく前記金属パイプ材料の一部を膨張させるように前記気体供給部の気体供給を制御する際に、前記金属パイプ材料内の気体の圧力を前記第1の圧力よりも低い第2の圧力に維持するように前記気体供給部の気体供給を制御する、請求項2記載の成形装置。
- 前記制御部は、前記気体供給部から前記金属パイプ材料内に気体を供給させる際に、断続的に気体供給するように前記気体供給部を制御する、請求項1~3のいずれか一項記載の成形装置。
- 前記気体供給部は、気体を蓄積する気体蓄積手段を有しており、
前記制御部は、前記金属パイプ材料内の気体の圧力を前記第1の圧力に維持するように、前記気体蓄積手段に蓄積された気体を前記金属パイプ材料内に供給させる、請求項1~4のいずれか一項記載の成形装置。 - パイプ部を有する金属パイプを成形する成形方法であって、
加熱された金属パイプ材料を第1の金型及び第2の金型の間に準備し、
前記第1の金型及び前記第2の金型の少なくとも一方を金型同士が合わさる方向に移動させることによって、前記パイプ部を成形するための第1のキャビティ部を前記第1の金型と前記第2の金型との間に形成し、
前記金属パイプ材料内の圧力を第1の圧力に維持するように気体を供給することによって、前記第1のキャビティ部内に前記パイプ部を成形する、
成形方法。
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US11267034B2 (en) | 2022-03-08 |
EP3424607B1 (en) | 2020-11-18 |
EP3424607A4 (en) | 2019-04-10 |
EP3424607A1 (en) | 2019-01-09 |
CA3015996C (en) | 2023-12-12 |
JPWO2017150110A1 (ja) | 2018-12-27 |
CN108698106A (zh) | 2018-10-23 |
CN108698106B (zh) | 2020-04-24 |
US20180361458A1 (en) | 2018-12-20 |
CA3015996A1 (en) | 2017-09-08 |
JP6860548B2 (ja) | 2021-04-14 |
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