WO2016063538A1 - 摩擦攪拌点接合装置及び摩擦攪拌点接合方法 - Google Patents
摩擦攪拌点接合装置及び摩擦攪拌点接合方法 Download PDFInfo
- Publication number
- WO2016063538A1 WO2016063538A1 PCT/JP2015/005320 JP2015005320W WO2016063538A1 WO 2016063538 A1 WO2016063538 A1 WO 2016063538A1 JP 2015005320 W JP2015005320 W JP 2015005320W WO 2016063538 A1 WO2016063538 A1 WO 2016063538A1
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- WIPO (PCT)
- Prior art keywords
- friction stir
- pin member
- spot welding
- stir spot
- shoulder member
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/123—Controlling or monitoring the welding process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/123—Controlling or monitoring the welding process
- B23K20/124—Controlling or monitoring the welding process at the beginning or at the end of a weld
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/125—Rotary tool drive mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1265—Non-butt welded joints, e.g. overlap-joints, T-joints or spot welds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
Definitions
- the present invention relates to a friction stir spot welding apparatus and a friction stir spot welding method.
- the present inventors have accumulated heat in the joining tool (including the backing), and the material is clamped by applying heat from the joining tool rather than in a single joining. It has been found that the outer side of the clamp portion is softened, the material under the clamp portion itself flows, the joint portion is depressed together with the clamp portion, and the clamp portion is raised.
- the present invention has been made in order to solve the above-mentioned problems, and in particular, in the double-acting friction stir spot welding method, a friction that can realize good joining quality even when continuously joined.
- An object is to provide a stir spot welding apparatus and a friction stir spot welding method.
- a friction stir spot welding device is a friction stir spot welding device that softens a workpiece with friction heat and joins by stirring, and is formed in a cylindrical shape.
- a pin member configured to be capable of rotating around an axis and moving back and forth in a direction along the axis, and is formed in a cylindrical shape, and the pin member is inserted into the pin member.
- a shoulder member configured to be able to rotate around and advance and retreat in a direction along the axis, a rotation driver for rotating the pin member and the shoulder member around the axis, and the pin A tool driver for moving the member and the shoulder member back and forth along the axis, a position detector for detecting a position of the tip surface of the pin member or the shoulder member in the axial direction, and a controller;
- the controller includes a tip end surface of the pin member or the shoulder member when the position detector detects contact with the surface of the object to be joined when the joining process of the object to be joined is started.
- the tool driver is controlled so that the tip surfaces of the pin member and the shoulder member are flush with each other when the position in the axial direction is set as a reference position and the joining process of the workpiece is completed.
- the first position which is the position in the axial direction of the tip surface of the pin member or the shoulder member detected by the position detector, is a region on the inner side of the object to be joined than the reference position. If located in the region, the tool driver is controlled so as to reduce the pressing force with which the pin member and the shoulder member press the object to be joined in the next joining step, and / or the pin Parts and Serial controls the rotation driving device to reduce the rotational speed of the shoulder member.
- the friction stir spot joining method according to the present invention is a friction stir spot joining method for softening the objects to be joined with friction heat and joining them by stirring,
- a cylindrical pin member configured to rotate around an axis and to be movable back and forth in the axial direction, or arranged to surround an outer peripheral surface of the pin member, rotate around the axis, and the axis
- the pin member detected by the position detector or the front end surface of the shoulder member when the front end surface of the cylindrical shoulder member configured to be movable back and forth in the direction contacts the surface of the object to be joined.
- the axial position is a reference position (A)
- the pin driver or the shoulder member presses the object to be joined with a preset pressing force
- the tool driver moves the pin member or the shoulder member.
- the rotary drive rotates the pin member or the shoulder member at a preset number of rotations to partially agitate the object to be joined.
- object (B) when the joining process of the object to be joined is completed, the tool driver is driven so that the tip surfaces of the pin member and the shoulder member are flush with each other (C), After (C), when the position detector detects a first position which is the position in the axial direction of the tip surface of the pin member or the shoulder member (D), the first position is more than the reference position.
- FIG. 1 is a schematic diagram showing a schematic configuration of the friction stir spot welding device according to the first embodiment.
- FIG. 2 is a block diagram schematically showing a control configuration of the friction stir spot welding device shown in FIG.
- FIG. 3A is a process diagram schematically showing an example of each process of friction stir spot welding by the friction stir spot welding apparatus shown in FIG. 1.
- FIG. 3B is a process diagram schematically showing an example of each process of friction stir spot welding by the friction stir spot welding apparatus shown in FIG. 1.
- FIG. 4 is a graph schematically showing the tip surface of the pin member, the tip surface of the shoulder member, and the tool average position Tx in each step of the friction stir spot welding shown in FIG. FIG.
- FIG. 5 is a schematic view showing a state of the step (5) when the objects to be joined are joined using the friction stir spot welding device.
- FIG. 6 is a graph schematically showing the tool average position Tx when the workpieces are continuously joined using the friction stir spot welding device according to the first embodiment.
- FIG. 7 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the first embodiment when continuous welding is performed.
- FIG. 8 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the first modification of the first embodiment when continuous welding is performed.
- FIG. 9 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the second modification of the first embodiment when continuous welding is performed.
- FIG. 10 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the fourth modification of the first embodiment when continuous welding is performed.
- FIG. 11 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the fifth modification of the first embodiment when continuous welding is performed.
- FIG. 12A is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the sixth modification of the first embodiment when continuous welding is performed.
- FIG. 12B is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the sixth modification of the first embodiment when continuous welding is performed.
- FIG. 13A is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the second embodiment when continuous welding is performed.
- FIG. 13B is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the second embodiment when continuous welding is performed.
- FIG. 14A is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the first modification of the second embodiment when continuous welding is performed.
- FIG. 14B is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the first modification in the second embodiment in the case where continuous welding is performed.
- FIG. 14C is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the first modification in the second embodiment when continuous welding is performed.
- the friction stir spot welding device is a friction stir spot welding device that softens a workpiece with frictional heat and joins the workpieces by stirring.
- the friction stir spot joining device is formed in a columnar shape and rotates around an axis.
- a pin member configured to be capable of moving back and forth in a direction along the axis, and formed in a cylindrical shape, the pin member is inserted through the pin member, and rotates around the axis and along the axis.
- a shoulder member configured to be able to move forward and backward in a direction, a rotary drive that rotates the pin member and the shoulder member around an axis, and a pin member and a shoulder member to move forward and backward along the axis, respectively.
- a tool driver a position detector that detects an axial position of the tip surface of the pin member or the shoulder member, and a controller, and when the controller starts a joining process of the objects to be joined, Position detector detects The axial position of the tip end surface of the pin member or shoulder member when contacting the surface of the object to be joined is set as the reference position, and when the joining process of the object to be joined is completed, the pin member and the shoulder member
- the tool driver is controlled so that the tip surface is flush, and the first position, which is the axial position of the tip surface of the pin member or shoulder member detected by the position detector, is more than the reference position.
- the tool driver is controlled so as to reduce the pressing force with which the pin member and the shoulder member press the object to be joined in the next joining step.
- a rotational drive device to reduce the rotation speed of a pin member and a shoulder member is illustrated.
- FIG. 1 is a schematic diagram showing a schematic configuration of the friction stir spot welding device according to the first embodiment.
- the up-down direction in a figure is represented as the up-down direction in a friction stir spot welding apparatus.
- the friction stir spot welding device 50 includes a pin member 11, a shoulder member 12, a tool fixing device 52, a tool driver 53, a clamp member 54, a backing support portion 55, A backing member 56 and a rotation driver 57 are provided.
- the pin member 11 and the shoulder member 12 are supported by a tool fixing device 52, and are driven to advance and retract in the vertical direction by a tool driver 53.
- the pin member 11, the shoulder member 12, the tool fixing device 52, the tool driver 53, and the clamp member 54 are provided on an upper portion of a backing support portion 55 configured by a C-type gun (C-type frame).
- a backing member 56 is provided below the backing support portion 55.
- the pin member 11 and the shoulder member 12 and the backing member 56 are attached to the backing support portion 55 at positions facing each other.
- a workpiece 60 is disposed between the pin member 11 and the shoulder member 12 and the backing member 56.
- the tool fixing device 52 includes a rotating tool fixing device 521 and a clamp fixing device 522
- the tool driving device 53 includes a pin driving device 531, a shoulder driving device 532, and a clamping driving device 41.
- the clamp member 54 is fixed to the clamp fixture 522 via the clamp driver 41.
- the clamp driver 41 is configured by a spring.
- the pin member 11 is formed in a substantially cylindrical shape or a substantially cylindrical shape, and is supported by a rotary tool fixing device 521, although not shown in detail in FIG. Further, the pin member 11 is rotated around the axis line Xr (rotation axis) coinciding with the axis of the pin member 11 by the rotation driver 57, and the arrow P1 direction, that is, the axis line Xr direction (FIG. 1) by the pin driver 531. Then, it is configured to move forward and backward along the vertical direction.
- axis line Xr rotation axis
- the shoulder member 12 is formed in a substantially cylindrical shape having a hollow, and is supported by a rotary tool fixing device 521.
- a pin member 11 is inserted into the hollow of the shoulder member 12.
- the shoulder member 12 is disposed so as to surround the outer peripheral surface of the pin member 11.
- the shoulder member 12 is configured to rotate around the same axis line Xr as the pin member 11 by the rotation driver 57, and to be moved forward and backward along the arrow P2 direction, that is, the axis line Xr direction by the shoulder driver 532. Yes.
- the pin member 11 and the shoulder member 12 are both supported by the same rotary tool fixing device 521 in the present embodiment, and both rotate integrally around the axis Xr by the rotation driver 57. Further, the pin member 11 and the shoulder member 12 are configured to be movable back and forth along the axis Xr direction by a pin driver 531 and a shoulder driver 532, respectively. In the first embodiment, the pin member 11 can move forward and backward independently, and can also move forward and backward with the forward and backward movement of the shoulder member 12, but the pin member 11 and the shoulder member 12 are Each may be configured to be able to move forward and backward independently.
- the clamp member 54 is formed in a cylindrical shape having a hollow, like the shoulder member 12, and is provided so that its axis coincides with the axis Xr.
- the shoulder member 12 is inserted into the hollow of the clamp member 54.
- each of the clamp member 54, the shoulder member 12, and the pin member 11 has a coaxial core-like nested structure.
- the clamp member 54 is configured to press the workpiece 60 from one surface (surface). As described above, the clamp member 54 is supported by the clamp fixing device 522 via the clamp driver 41 in the first embodiment. The clamp driver 41 is configured to urge the clamp member 54 toward the backing member 56 side.
- the clamp driver 41 is configured by a spring in the first embodiment, but is not limited to this.
- the clamp driver 41 only needs to be configured to apply an urging force or a pressurizing force to the clamp member 54.
- a mechanism using a gas pressure, a hydraulic pressure, a servo motor, or the like can be suitably used.
- Rotating tool fixing device 521 is supported on clamp fixing device 522 via rotation driving device 57.
- the clamp member 54 (including the clamp driver 41 and the clamp fixture 522) is configured to be advanced and retracted in the direction of the arrow P3 (the same direction as the arrows P1 and P2) by the shoulder driver 532.
- the clamp driver 41 and the shoulder driver 532 constitute a clamp member driver.
- the clamp member driver may be configured by a driver that drives the clamp member 54 so that the clamp member 54 can move forward and backward independently of the shoulder driver 532.
- the pin member 11, the shoulder member 12, and the clamp member 54 are each provided with a front end surface 11a, a front end surface 12a, and a front end surface 54a. Further, the pin member 11, the shoulder member 12, and the clamp member 54 are moved forward and backward by the tool driver 53, so that the tip surface 11 a, the tip surface 12 a, and the tip surface 54 a are respectively on the surface of the workpiece 60. Abut.
- the backing member 56 is configured to be supported by a flat surface (support surface 56a) so as to contact the back surface of the flat plate-like object 60.
- the configuration of the backing member 56 is not particularly limited as long as the backing member 56 can appropriately support the workpiece 60 so that the friction stir spot welding can be performed.
- the backing member 56 may be configured such that, for example, a backing member 56 having a plurality of types of shapes is separately prepared and can be removed and replaced from the backing support portion 55 according to the type of the object to be joined 60. Good.
- the pin member 11, the shoulder member 12, the tool fixing device 52, the tool driving device 53, the clamp member 54, the backing support portion 55, and the rotation driving device 57 in the first embodiment have been described above. It is not limited to the configuration, and a configuration widely known in the field of friction stir welding can be suitably used.
- the pin driver 531 and the shoulder driver 532 constituting the tool driver 53 are each composed of a motor and a gear mechanism that are well-known in the field of friction stir welding. It is not limited.
- the configuration including the clamp member 54 is adopted.
- the configuration is not limited thereto, and a configuration not including the clamp member 54 may be employed.
- the clamp member 54 may be configured to be detachable from the backing support portion 55 as necessary.
- the backing support portion 55 is configured by a C-type gun, but is not limited thereto.
- the backing support portion 55 is configured to support the pin member 11 and the shoulder member 12 so as to be capable of moving forward and backward and to support the backing member 56 at a position facing the pin member 11 and the shoulder member 12. May be.
- the friction stir spot welding device 50 employs a configuration that is disposed in a friction stir spot welding robot device (not shown). Specifically, the backing support portion 55 is attached to the tip of the arm of the robot apparatus. For this reason, it can be considered that the backing support portion 55 is also included in the friction stir spot welding robot apparatus.
- the specific configuration of the friction stir spot welding robot apparatus including the backing support portion 55 and the arm is not particularly limited, and a known configuration in the field of friction stir welding such as an articulated robot can be suitably used. .
- the friction stir spot welding device 50 (including the backing support portion 55) is not limited to a case where the friction stir spot welding device 50 is applied to a friction stir spot welding robot device.
- a friction stir spot welding robot device for example, an NC machine tool, a large C frame, And it can apply suitably also to well-known processing apparatuses, such as an auto riveter.
- the friction stir spot welding device 50 may adopt a configuration in which the workpiece 60 is hand-held as long as the friction stir spot welding can be stably performed on the workpiece 60. You may employ
- FIG. 2 is a block diagram schematically showing a control configuration of the friction stir spot welding device shown in FIG.
- the friction stir spot welding device 50 includes a controller 51, a position detector 21, a storage device 31, an input device 32, and a pressure detector 33.
- the storage device 31 stores various data in a readable manner, and the storage device 31 includes a storage device such as a known memory or a hard disk.
- the storage device 31 does not have to be single, and may be configured as a plurality of storage devices (for example, a random access memory and a hard disk drive).
- the controller 51 or the like is configured by a microcomputer, at least a part of the storage unit 31 may be configured as an internal memory of the microcomputer or may be configured as an independent memory.
- the memory 31 stores data and may be able to read data from other than the controller 51 or may be able to write data from the controller 51 or the like. Not too long. Further, the storage unit 31 stores a reference position (0 point) that is a position where the tip surface 11 a of the pin member 11 or the tip surface 12 a of the shoulder member 12 is in contact with the surface of the workpiece 60.
- the input device 32 allows the controller 51 to input various parameters related to the control of the friction stir spot welding or other data, and is a known input device such as a keyboard, a touch panel, a button switch group, or the like. It is configured.
- a known input device such as a keyboard, a touch panel, a button switch group, or the like. It is configured.
- at least the joining condition of the article to be joined 60 for example, data such as the thickness and material of the article to be joined 60 can be input by the input device 32.
- the position detector 21 is configured to detect a position (hereinafter simply referred to as a position) in the direction of the axis Xr of the distal end surface 11a of the pin member 11 or the shoulder member 12 and output the detected position to the controller 51.
- a position hereinafter simply referred to as a position
- various known position sensors can be used. For example, an LVDT, an encoder, or the like can be used.
- the position detector 21 directly detects the position of the distal end surface 11a of the pin member 11 or the distal end surface 12a of the shoulder member 12, but indirectly the pin member 11 You may employ
- the position detector 21 is configured to detect a predetermined position of the pin member 11 or the shoulder member 12, and the controller 51 stores in advance the distance between the predetermined position and the tip surface. Form may be sufficient.
- the pin member 11 and the shoulder member 12 may accumulate heat when the workpiece 60 is joined, and may bend due to thermal expansion.
- the controller 51 corrects the deflection of the pin member 11 or the shoulder member 12 at the position detected by the position detector 21, and the tip surface 11 a of the pin member 11 or the tip surface of the shoulder member 12. It is good also as a position of 12a.
- these pressure detectors 33 are connected to the workpiece 60.
- the pressing force (pressing force) applied to the sensor is detected, and the detected pressing force is output to the controller 51.
- a load cell is used as the pressure detector 33.
- the load cell is not limited to this, and a known pressure detector can be used.
- the controller 51 is configured to control each member (each device) constituting the friction stir spot welding device 50. Specifically, the controller 51 controls the pin driver 531 and the shoulder driver 532 that constitute the tool driver 53, and the rotation driver 57. Thereby, it is possible to switch the advance movement or the backward movement of the pin member 11 and the shoulder member 12, and to control the tip position, the moving speed, the moving direction, and the like in the pin member 11 and the shoulder member 12 during the forward and backward movement. . Moreover, the pressing force which presses the to-be-joined object 60 of the pin member 11, the shoulder member 12, and the clamp member 54 can be controlled. Furthermore, the rotation speed of the pin member 11 and the shoulder member 12 can be controlled.
- the specific configuration of the controller 51 is not particularly limited.
- the controller 51 is configured by a microcomputer and includes a CPU.
- the controller 51 is configured such that the CPU reads out a predetermined control program stored in the storage device 31 and executes it to perform calculations related to the operations of the tool driver 53 and the rotation driver 57.
- the controller 51 is not only configured as a single controller, but also configured as a controller group in which a plurality of controllers cooperate to execute control of the friction stir spot welding device 50. It does not matter.
- the position of the pin member 11 is determined based on the position data detected by the position detector 21 and the pressure value detected by the pressure detector 33.
- the position where the front end surface 11a or the front end surface 12a of the shoulder member 12 contacts the surface of the workpiece 60 is set as the reference position (0 point).
- the controller 51 sets the position of the front end surface 11a of the pin member 11 or the front end surface 12a of the shoulder member 12 as the reference position when the pressure detector 33 detects a preset pressing force. To do. As will be described later, the pin member 11, the shoulder member 12, and the clamp member 54 come into contact with the surface 60 c of the workpiece 60 simultaneously (substantially simultaneously) and press the workpiece 60 with a preset pressing force. (See (1) in FIG. 3A). For this reason, the position of the front end surface 11a of the pin member 11 or the front end surface 12a of the shoulder member 12 when the pressure detector 33 detects a preset pressing force can be set as the reference position.
- the pin member 11 or the shoulder member 12 is driven to rotate after contact with the workpiece 60 (see (2) in FIG. 3A), but the surface 60c of the workpiece 60 until the material is softened. However, it will stay for a certain period of time, albeit slightly. For this reason, the controller 51 may set the position when the position data output from the position detector 21 has the same value for a certain time as the reference position.
- the controller 51 controls the tool driver 53 based on the relational expressions of the cross-sectional areas and the press-fit depths of the tip surfaces of the pin member 11 and the shoulder member 12, and thereby the pin member 11 and the shoulder member.
- the position of the tip of 12 is controlled.
- the cross-sectional area of the tip surface of the pin member 11 is Ap
- the cross-sectional area of the tip surface of the shoulder member 12 is As
- the press-fitting depth of the pin member 11 is Pp
- the shoulder member 12 is press-fit.
- FIG. 4 is a graph schematically showing the tip surface of the pin member, the tip surface of the shoulder member, and the tool average position Tx in each step of the friction stir spot welding shown in FIG.
- Steps (1) to (6) shown in FIG. 4 correspond to the steps (1) to (6) shown in FIGS. 3A and 3B.
- the controller 51 drives the tool driver 53 to bring the pin member 11, the shoulder member 12, and the clamp member 54 closer to the workpiece 60 (metal plates 61 and 62), and the tip of the pin member 11.
- the surface 11a, the front end surface 12a of the shoulder member 12, and the front end surface 54a (not shown in FIGS. 3A and 3B) of the clamp member 54 are brought into contact with the surface 60c of the workpiece 60 (FIGS. 3A and 4). Step (1) reference).
- the metal plates 61 and 62 are sandwiched between the clamp member 54 and the backing member 56, and the clamp member 41 is urged toward the surface 60 c side of the workpiece 60 due to contraction of the clamp driver 41, and the clamping force is increased. appear.
- the controller 51 presses the workpiece 60 with a predetermined pressing force (for example, a predetermined value included in the range of 3000 N to 8000 N) for the pin member 11, the shoulder member 12, and the clamp member 54.
- a predetermined pressing force for example, a predetermined value included in the range of 3000 N to 8000 N
- the tool driver 53 is controlled.
- the controller 51 receives the pressure detected from the pressure detector 33, and the controller 51 detects the predetermined pressure when the pressure detected by the pressure detector 33 is a predetermined pressure.
- the position of the tip surface 11a of the pin member 11 or the tip surface 12a of the shoulder member 12 detected by the position detector 21 is stored in the storage device 31 as a reference position.
- the controller 51 drives the rotation driver 57 to rotate the pin member 11 and the shoulder member 12 in a state where the pin member 11 and the shoulder member 12 are in contact with the surface 60c of the workpiece 60 (steps of FIG. 3A and FIG. 4). 2)).
- the surface 60c of the article 60 to be joined is “preliminarily heated”.
- the metal material in the contact region of the metal plate 61 is softened by heat generation due to friction, and a plastic flow portion 60a is generated in the vicinity of the surface 60c of the article 60 to be joined.
- the controller 51 controls the pin driver 531 and / or the shoulder driver 532 (see FIG. 1) to retract the pin member 11 from the surface 60c of the workpiece 60, thereby causing the shoulder member 12 to move backward. It further enters (press-fits) from the surface 60c of the workpiece 60 (see step (3) in FIGS. 3A and 4). At this time, the softened portion of the metal material extends from the upper metal plate 61 to the lower metal plate 62, and the region of the plastic flow portion 60a increases.
- the controller 51 controls the pin driver 531 to gradually enter (press-fit) the retracted pin member 11 into the metal plate 61. Along with this, the shoulder member 12 moves backward from the metal plate 61 (see step (4) in FIG. 3B and FIG. 4). In addition, the said process (4) does not need to be performed, when the surface 60c of the metal plate 61 is fully shaped by the process (5) mentioned later.
- the controller 51 controls the tool driver 53 so as to reduce the absolute value of the tool average position Tx as described above. Since specific control for reducing the absolute value of the tool average position Tx is disclosed in detail in Patent Document 1, the description thereof is omitted here.
- the controller 51 controls the pin driver 531 to gradually enter the pin member 11 when the process (3) shifts to the process (5).
- the controller 51 controls the pin driver 531 to gradually draw the pin member 11.
- the pressure applied by the tip is maintained (the arrow F in step (3) in FIG. 3A and the step (4 in FIG. 3B)). ) (See arrow F).
- the controller 51 controls the tool driver 53 so that the front end surface 11a of the pin member 11 and the front end surface 12a of the shoulder member 12 are adjusted to such an extent that there is almost no step between them (they are flush).
- the surface 60c of the to-be-joined object 60 is shape
- the controller 51 controls the tool driver 53 to separate the pin member 11, the shoulder member 12, and the clamp member 54 from the workpiece 60, and then controls the rotation driver 57 to control the pin member. 11 and the rotation of the shoulder member 12 are stopped, and a series of friction stir spot joining (joining process of the objects to be joined 60) is terminated (see process (6) in FIGS. 3B and 4). Accordingly, the rotation (and pressing) due to the contact between the pin member 11 and the shoulder member 12 is not applied to the metal plates 61 and 62, so that the plastic flow is stopped in the plastic flow portion 60 a extending over both the metal plates 61 and 62. And it becomes the junction part 60b. In this way, the two metal plates 61 and 62 are connected (joined) by the joint portion 60b.
- the controller 51 preferably controls each member (each device) so as to reduce the absolute value of the tool average position Tx. It is possible to achieve good bonding quality with high accuracy and to prevent or suppress the occurrence of internal cavity defects.
- continuous joining means that the pin member and / or the shoulder member is not sufficiently cooled (for example, air-cooled), and performs the next joining. For example, after the joining is completed, When the next joining is started within a predetermined time (for example, several seconds (2 seconds)) and / or when the next joining is started, the temperature of the pin member 11 and the shoulder member 12 is equal to or higher than the predetermined temperature. When there is, it means to construct with high cycle such as.
- the present inventor measured the temperature of the shoulder member when the two aluminum alloy 2024 clad-T3 materials (plate thickness 0.8 mm) were joined continuously by various cooling methods.
- the temperature was 200 ° C. or higher, the appearance quality (mainly the dent in the joint) was poor.
- the temperature of the shoulder member is cooled to a temperature of 20 to 60 ° C. or less, even if the joining is repeated, an increase in the temperature of the tool is not confirmed, and the appearance quality (mainly the dent in the joining portion) is improved. No defects occurred.
- these temperature threshold values are not uniformly defined because they vary depending on the material to be joined, the plate thickness, and the material of the shoulder member.
- FIG. 5 is a schematic diagram showing the state of the step (5) when the objects to be joined are joined using the friction stir spot welding device, and the state (A) of the step (5) when joining in a single shot.
- the state (B) of the process (5) in the case of joining continuously is shown.
- FIG. 6 is a graph schematically showing the tool average position Tx when the workpieces are continuously joined using the friction stir spot welding device according to the first embodiment.
- the tip surface 11a of the pin member 11 and the tip surface 12a of the shoulder member 12 are made flush in step (5). At this time, these front end surfaces are located on the surface 60c (reference position) of the workpiece 60.
- the tip surface of the pin member 11 is obtained in the step (5) under the same control conditions as the single joining. 11a and the front end surface 12a of the shoulder member 12 could not be controlled so as to be positioned on the surface 60c (reference position) of the workpiece 60, and the result was that the tool average position Tx had a positive value.
- step (5) the friction stir spot welding device 50 is in a state as shown in FIG. That is, the front end surface 11a of the pin member 11 and the front end surface 12a of the shoulder member 12 are located in a region (first region) on the inner side of the workpiece 60 relative to the reference position (the surface 60c of the workpiece 60). ing. On the other hand, the front end surface 54a of the clamp member 54 is located in a region (second region) on the outer side of the workpiece 60 with respect to the reference position.
- the inventors of the present invention perform the following joining while the heat generated by the friction is accumulated in the pin member 11 and the shoulder member 12, and therefore, compared with the case where the joining is performed in a single shot.
- the time until the metal material is softened becomes faster, and as a result, when continuous bonding is performed at the same time, the same rotational speed, or the same pressing force as the single bonding, the material to be softened increases, and the material is shouldered.
- the cause (factor) is considered to have flowed to the outside of the member 12 (clamp member 54 side) or the like.
- FIG. 7 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the first embodiment when continuous welding is performed.
- the controller 51 drives the tool driver 53 to start the process of joining the objects to be joined (step S101). Thereby, the pin member 11, the shoulder member 12, and the clamp member 54 move so that the to-be-joined object 60 (metal plates 61 and 62) may approach.
- the controller 51 drives the rotation driver 57 at a predetermined number of rotations set in advance to rotate the pin member 11 and the shoulder member 12 (step S102). Accordingly, the pin member 11, the shoulder member 12, and the clamp member 54 move so as to approach the workpiece 60 while the pin member 11 and the shoulder member 12 rotate.
- the controller 51 employs a form in which the rotary driver 57 is driven after the tool driver 53 is driven.
- the present invention is not limited to this.
- the controller 51 may employ a mode in which the tool driver 53 is driven after the rotation driver 57 is driven.
- the controller 51 drives the tool driver 53 so that the rotation driver 57 is driven after the pin member 11, the shoulder member 12, and the clamp member 54 contact the workpiece 60. May be.
- the controller 51 determines whether or not the pressure detector 33 has detected a predetermined pressure (step S103). As described above, the controller 51 controls the tool driver 53 so that the pin member 11, the shoulder member 12, and the clamp member 54 press the workpiece 60 with a predetermined pressing force set in advance. Yes. For this reason, when the pressure detected by the pressure detector 33 is a predetermined pressure, the controller 51 determines that the tip surface 11a of the pin member 11 and the tip surface 12a of the shoulder member 12 are the surfaces of the object 60 to be joined. It can be determined that the contact is made with 60c.
- step S104 the controller 51 proceeds to step S104 when the applied pressure detector 33 detects a predetermined pressure (Yes in step S103).
- the controller 51 repeats steps S101 to S103 until the predetermined pressure is detected.
- the pin member 11 and the shoulder member 12 come into contact with the workpiece 60, as described above, the pin member 11 and the shoulder member 12 remain on the surface 60c of the workpiece 60 until the material is softened. Further, when there is a clamp member, the material remains on the surface 60c of the workpiece 60 even if the material is softened.
- the controller 51 determines the position of the distal end surface 11a of the pin member 11 or the distal end surface 12a of the shoulder member 12 detected by the position detector 21 when the applied pressure detector 33 detects a predetermined pressure as a reference position. Is set (stored in the storage device 31) (step S104).
- the controller 51 adopts a mode in which the reference position is set after driving the rotary driver 57, but the present invention is not limited to this.
- the controller 51 may set a reference position before driving the rotation driver 57.
- the pressure may be the same value, or both may be different values.
- the threshold value of the pressing force in the step (1) may be set to a smaller value than the pressing force in the steps (2) to (5).
- the reference position may be set at a time immediately before the start of the step (3).
- controller 51 causes the pin member 11 and the shoulder member 12 to retreat from the surface 60 c of the workpiece 60.
- the tool driver 53 is controlled so that the tip surface 11a of the pin member 11 and the tip surface 12a of the shoulder member 12 are flush with each other.
- step S106 the controller 51 determines whether or not the position acquired in step S106 is located in the first region (step S107).
- step S106 When the position (first position) acquired in step S106 is not located in the first area (No in step S107), the controller 51 returns to the start of this flow and executes the next joining.
- step S106 when the position acquired in step S106 is located in the first region (Yes in step S107), the controller 51 changes the setting of the pressing force and / or the rotational speed (step S108). ) Return to the start of this flow and execute the next bonding.
- the controller 51 changes the setting of the tool driver 53 so that the pressing force that presses the workpieces 60 in the next bonding step is less than the predetermined pressing force, and / or Alternatively, the setting of the rotation driver 57 is changed so that the number of rotations of the pin member 11 and the shoulder member 12 in the next joining step is reduced below the predetermined number of rotations. More specifically, the controller 51 decreases the operation amount of the tool driver 53 and / or decreases the operation amount of the rotary driver 57.
- the pin member 11 and the shoulder member 12 press the pressing force 60 and / or the pin when the joining is continuously performed.
- the appearance quality and the like of the joined portion of the article 60 can be sufficiently secured, and good joining quality can be realized.
- the first position is located in the first region, and the next joining process.
- the temperature of the pin member and the shoulder member is equal to or higher than a predetermined temperature when starting the tool, the tool is used to reduce the pressing force with which the pin member and the shoulder member press the object to be joined in the next joining step.
- the mode which controls a drive device and / or controls a rotation drive device to reduce the number of rotations of a pin member and a shoulder member is illustrated.
- FIG. 8 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the first modification of the first embodiment when continuous welding is performed.
- step S107A is executed during S108.
- step S107A the controller 51 determines whether or not the temperature of the pin member 11 and the shoulder member 12 is equal to or higher than a predetermined temperature when a command to start the next joining is input.
- the predetermined temperature can be set in advance by experiments or the like, and may be set to 20 to 60 ° C., for example.
- the temperatures of the pin member 11 and the shoulder member 12 may be directly detected by, for example, an infrared temperature sensor or the like, or from the temperature of the object 60 or the like, the number of times of bonding of the object 60 or the like. It may be detected indirectly.
- step S107A when the first position is located in the first region and the temperatures of the pin member 11 and the shoulder member 12 are equal to or higher than a predetermined temperature (Yes in step S107A), the controller 51 determines the pressing force and / or Alternatively, the setting of the rotational speed is changed (step S108), the process returns to the start of the present flow, and the next joining is executed. It should be noted that it is desirable to change the setting of the pressing force and / or the rotational speed automatically by creating a database in advance through experiments or the like.
- step S107A when the temperature of the pin member 11 and the shoulder member 12 is not equal to or higher than the predetermined temperature (No in step S107A), the controller 51 returns to the start of this flow and executes the next joining.
- the friction stir spot welding device 50 of the second modification is configured in the same manner as the friction stir spot welding device 50 according to the first embodiment, description of the configuration is omitted.
- FIG. 9 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the second modification of the first embodiment when continuous welding is performed.
- step S107B is executed during S108.
- step S107B the controller 51 proceeds to step S107B when the position (first position) acquired in step S106 is located in the first region (Yes in step S107).
- step S107B the controller 51 measures the time from the end of the previous joining to the input of the command to start the next joining, and whether or not the measured time has exceeded a predetermined time. Determine whether.
- the predetermined time can be set in advance by experiments or the like, and may be set to 5 to 7 seconds, for example.
- the time elapsed by the controller 51 is executed by a clock unit of the controller 51 (not shown).
- the controller 51 determines that the time from when the first position is located in the first region and when the command to start the next joining is input after the previous joining is finished exceeds a predetermined time. If not (Yes in step S107B), the setting of the pressing force and / or the number of rotations is changed (step S108), and the process returns to the start of this flow to execute the next joining.
- step S107B when the time from the end of the previous joining to the input of the command to start the next joining has elapsed for a predetermined time or longer (No in step S107B), the controller 51 Return to the start of the flow and perform the next bond.
- the controller 51 is instructed to start the next joining after the first position is located in the first region and the previous joining is completed.
- a mode is adopted in which the setting of the pressing force and / or the rotational speed is changed when the time until input does not exceed a predetermined time, the present invention is not limited to this.
- the controller 51 has not passed the predetermined time since the first position is located in the first region and the command for starting the next joining is input after the previous joining is completed. If the temperature of the pin member 11 and the shoulder member 12 is equal to or higher than a predetermined temperature when a command to start the next joining is input, the setting of the pressing force and / or the rotational speed is changed. May be adopted.
- the friction stir spot welding device 50 according to the third modification of the first embodiment has the same basic configuration as the friction stir spot welding device 50 according to the first embodiment, but is not provided with the pressure detector 33. The point is different.
- the friction stir spot welding device 50 according to the third modification performs a continuous joining operation as in the friction stir spot welding device 50 according to the first embodiment, but the reference position setting method is different. Specifically, the operator visually checks the contact between the front end surface 11a of the pin member 11 or the front end surface 12a of the shoulder member 12 and the surface of the workpiece 60, and the controller 51 The position detected by the position detector 21 is stored in the storage 31 as a reference position.
- the continuous joining operation is the continuous joining operation illustrated in FIG. This step S103 is omitted.
- the friction stir spot welding device 50 according to the third modified example configured as described above has the same effects as the friction stir spot welding device 50 according to the first embodiment.
- storage device 31 should just memorize
- friction stir spot welding device 50 according to the third modification may be configured in the same manner as the friction stir spot welding device 50 according to the first or second modification except for the above features.
- the controller 51 controls the tool driver 53 to detect the position immediately before driving either the pin member 11 or the shoulder member 12.
- the position detected by the device 21 is set as the reference position.
- FIG. 10 is a flowchart showing an example of the operation of the friction stir spot welding device according to the fourth modification of the first embodiment when continuous welding is performed.
- the controller 51 drives the tool driver 53 to start the joining process of the objects to be joined (step S201).
- the controller 51 drives the rotation driver 57 at a predetermined rotation speed set in advance to rotate the pin member 11 and the shoulder member 12 in a state where they are in contact with the surface 60c of the article 60 to be joined. .
- the pin member 11 and the shoulder member 12 remain on the surface 60c of the workpiece 60 until the material is softened.
- the controller 51 determines the position of the distal end surface 11a of the pin member 11 or the distal end surface 12a of the shoulder member 12 detected by the position detector 21 immediately before outputting the control signal to the tool driver 53 in step S205. Obtain (step S203). Next, the controller 51 sets the position acquired in step S203 as a reference position (updates the reference position stored in the storage unit 31) (step S204).
- Steps S205 to S208 are the same as steps S105 to S108 shown in FIG.
- the friction stir spot welding device 50 according to the fourth modification is configured to update the reference position in step S204 when continuous welding is performed. Even the friction stir spot welding device 50 according to the fourth modification configured as described above has the same effects as the friction stir spot welding device 50 according to the first embodiment.
- the reference position of one or more joints is stored in the storage device 31.
- the reference position stored in the storage device 31 may be updated.
- the reference position of one or more joint locations is stored in the storage device 31
- the position acquired in step S203 may be stored as the reference position separately from the reference position stored in the storage device 31.
- the friction stir spot welding device 50 according to the fourth modification may be configured in the same manner as the friction stir spot welding device 50 according to any one of the first to third modifications, except for the above-described features.
- the controller has a tool average position Tx1, which is the tool average position Tx calculated with reference to the first position, outside the appropriate range that is arbitrarily set in advance through experiments or the like.
- the tool driver is controlled so as to reduce the pressing force with which the pin member and the shoulder member press the object to be joined in the next joining process, and / or the pin member in the next joining process.
- the aspect which controls a rotational drive so that the rotation speed of a shoulder member may be illustrated is illustrated.
- the friction stir spot welding apparatus of the fifth modification is configured in the same manner as the friction stir spot welding apparatus according to the first embodiment, the description of the configuration is omitted.
- FIG. 11 is a flowchart illustrating an example of the operation of the friction stir spot welding device according to the fifth modification of the first embodiment when continuous welding is performed.
- step S101 to S106 of the first embodiment shown in FIG. 7 from step S301 to step S306.
- step S307 There are different operations after step S307.
- movement differs is demonstrated in detail.
- step S307 the controller 51 calculates the tool average position Tx1 (Ap ⁇ Pp + As ⁇ Ps) based on the position (first position) acquired in step S306. Next, the controller 51 determines whether or not the tool average position Tx1 calculated in step S307 is within the appropriate range (step S308).
- the appropriate range of the tool average position Tx1 is arbitrarily changed by a metal material or the like constituting the workpiece 60, and can be set in advance by an experiment or the like.
- the lower limit of the appropriate range is preferably a value of about -0.08 to -0.05, and the upper limit is 0.05. A value of about 0.08 is preferable.
- step S307 When the tool average position Tx1 calculated in step S307 is within the appropriate range (No in step S308), the controller 51 returns to the start of this flow as it is, and executes the next joining.
- step S307 when the tool average position Tx1 calculated in step S307 is outside the appropriate range (Yes in step S308), the controller 51 changes the setting of the pressing force and / or the rotational speed (step S309). ) Return to the start of this flow and execute the next bonding.
- the friction stir spot welding device 50 according to the fifth modification configured as described above has the same effects as the friction stir spot welding device 50 according to the first embodiment.
- the friction stir spot welding device 50 according to the fifth modification may be configured in the same manner as the friction stir spot welding device 50 according to any one of the first to fourth modifications, except for the above characteristics.
- the friction stir spot welding apparatus according to the sixth modification exemplifies a mode in which the controller prohibits execution of the next welding process when the tool average position Tx1 is larger than the first threshold value.
- the friction stir spot welding apparatus of the sixth modification is configured in the same manner as the friction stir spot welding apparatus according to Embodiment 1, the description of the configuration is omitted.
- the basic joining operation of the friction stir spot welding device 50 of the sixth modification is the same as the continuous welding operation of the friction stir spot welding device 50 of the fifth modification.
- the operation is different when the tool average position Tx1 calculated in step S307 is outside the appropriate range (Yes in step S308).
- movement differs is demonstrated in detail.
- the controller 51 proceeds to step S309 when the tool average position Tx1 calculated in step S307 is out of the appropriate range (Yes in step S308).
- step S309 the controller 51 determines whether or not the tool average position Tx1 calculated in step S307 is larger than the first threshold value.
- the first threshold value is a value larger than the aptitude range, and is arbitrarily changed depending on the metal material constituting the workpiece 60 or the required quality requirement, etc. Can be set.
- the first threshold value may be set to 0.1 mm or 0.2 mm, for example, depending on the required quality, or may be set to 20% of the plate thickness of the workpiece 60 or the like.
- step S307 When the tool average position Tx1 calculated in step S307 is not larger than the first threshold value (No in step S309), the controller 51 changes the setting of the pressing force and / or the rotational speed (step S311). ) Return to the start of this flow and execute the next bonding.
- step S310 the controller 51 prohibits the next joining (step S310) and ends this flow. To do. Since the amount of heat accumulated in the pin member 11 and the shoulder member 12 is large, even if the setting is changed, there is a possibility that the appearance quality and the like of the joined portion of the article to be joined 60 may not be sufficiently secured. Is prohibited.
- the prohibition of the next bonding is not only performed when the bonding of the next workpiece 60 is stopped, but also until the time for sufficiently cooling the pin member 11 and the shoulder member 12 has elapsed. This includes the case where the joining of the object 60 is stopped.
- the friction stir spot welding device 50 according to the sixth modification may be configured in the same manner as the friction stir spot welding device 50 according to any one of the first to fourth modifications except for the above-described features.
- the first position is a region on the side farther from the workpiece than the reference position.
- the second region and the reference position or the first region are changed, it is determined that a part of the object to be bonded is attached to the pin member and / or the shoulder member, and a warning is given by the alarm. And / or a mode for prohibiting execution of the next joining step.
- the friction stir spot welding apparatus according to the second embodiment is configured in the same manner as the friction stir spot welding apparatus according to the first embodiment, description of the configuration is omitted.
- the present inventors have found that the first position may be located in the second region when the joining process of the objects to be joined is completed when the objects to be joined are continuously joined. .
- a cavity space
- a case where a part of the object to be joined is attached to the tip of the shoulder member is conceivable.
- the present inventors have further considered the phenomenon, and when the first position is located in the second region, it adheres to the tip of the pin member and / or the shoulder member in the subsequent joining process.
- the present invention has been conceived by finding that a part of the object to be joined may be removed by being mixed with the joined part.
- FIG. 13A and FIG. 13B are flowcharts showing an example of the operation of the friction stir spot welding device according to the second embodiment when continuous welding is executed.
- the continuous welding operation in the friction stir spot welding device 50 according to the second embodiment is basically the same as the continuous welding operation in the friction stir spot welding device 50 according to the first embodiment.
- the operation is the same, but the operations after step S107 are different.
- movement differs is demonstrated in detail.
- step S106 When the position (first position) acquired in step S106 is located in the first region (Yes in step S107), the controller 51 changes the setting of the pressing force and / or the rotational speed ( Step S108). Next, the controller 51 stores the position (first position) acquired in step S106 in the storage device 31 (step S109), returns to the start of this flow, and executes the next joining.
- step S110 the controller 51 determines whether or not the first position varies between the second region and the first region or the reference position. Specifically, the controller 51 refers to the history of the first position stored in the storage device 31, and the first position varies between the second area and the first area or the reference position. It is determined whether or not.
- the history of the first position stored in the storage device 31 refers to the history after the start of this flow, and the history before that is not referred to.
- the case where the first position varies between the second region and the first region or the reference position every time the joining process of the workpiece 60 is completed refers to the following case.
- the controller 51 stores the first position in the storage device 31 every time the joining process of the workpiece 60 is completed. For example, the first position for the first time is located in the second area, the first position for the second time is located in the first area (or the reference position), and the first position for the third time is located in the second area. In such a case, the controller 51 determines that the first position varies between the second region and the first region or the reference position.
- the stored first position is the second area, the first area (or the reference position), It is not limited only to when it is located alternately.
- the first position fluctuates between the second area and the first area or the reference position, for example, the first position is located in the second area continuously several times, and then one or more After being located in the first area (or reference position) for the number of times, if it is located in the second area again, or the first position is located in the first area (or reference position) continuously several times, then It may be a case where after being positioned in the second area one or more times, it is positioned in the first area (or the reference position) again.
- step S110 the controller 51 returns to the start of this flow as it is. Perform the joining.
- step S110 when the first position fluctuates between the second region and the first region or the reference position (Yes in step S110), the controller 51 informs the user of the pin member 11 by the alarm device. In addition, a warning that there is a possibility that a part of the workpiece 60 is attached to the tip of the shoulder member 12 is issued (step S111), and the process returns to the start of this flow to execute the next joining.
- the alarm device may have any configuration as long as a warning can be notified to the outside.
- a mode for informing outside for example, a mode in which character data or image data or the like is displayed on a display unit (screen) of a remote controller, a mode in which a speaker or the like is used for voice notification, light or color may be used. It may be a mode that informs by.
- the aspect notified to a smart phone, a mobile telephone, or a tablet-type computer etc. with an email or an application via a communication network may be sufficient.
- the user of the friction stir spot welding device 50 can know that there is a possibility that the pin member 11 and / or the shoulder member 12 has an abnormality. Can be executed early. For this reason, the deterioration of the quality (for example, the surface 60c of the to-be-joined object 60 is built up etc.) by which a part of the to-be-joined object 60 adhering to the pin member 11 mixes with the joining part to the to-be-joined object 60 is suppressed. can do.
- the quality for example, the surface 60c of the to-be-joined object 60 is built up etc.
- the controller 51 when the first position is fluctuated between the second region and the first region or the reference position, the controller 51 notifies the warning by a notifier.
- the controller 51 may adopt a form in which the next joining is prohibited when the first position varies between the second region and the first region or the reference position.
- the controller 51 performs the next joining after performing the warning notification by the alarm device a plurality of times. A prohibited form may be adopted.
- friction stir spot welding device 50 according to the second embodiment may be configured in the same manner as the friction stir spot welding device 50 according to any one of the first to sixth modifications in the first embodiment except for the above characteristics. Good.
- the tool average position Tx1 fluctuates between a negative value and a positive value or 0 each time the controller finishes the joining process of the workpieces. Exemplifies a mode in which it is determined that a part of the object to be bonded is attached to the pin member and / or the shoulder member, a warning is notified by an alarm device, and / or the execution of the next bonding process is prohibited. Is.
- the friction stir spot welding apparatus according to the first modification is configured in the same manner as the friction stir spot welding apparatus according to the first embodiment, description of the configuration is omitted.
- FIG. 14A, FIG. 14B, and FIG. 14C are flowcharts showing an example of the operation of the friction stir spot welding device according to the first modification in the second embodiment when continuous welding is performed.
- the continuous joining operation in the friction stir spot welding device 50 according to the first modification is the same as the continuous joining in the friction stir spot welding device 50 according to the fifth modification in the first embodiment.
- the operation and the basic operation are the same, but the operations after step S308 are different.
- movement differs is demonstrated in detail.
- step S307 When the tool average position Tx1 calculated in step S307 is within the appropriate range (No in step S308), the controller 51 stores the tool average position Tx1 calculated in step S307 in the storage device 31 (step S313). ) Return to the start of this flow and execute the next bonding.
- step S307 determines whether or not the tool average position Tx1 calculated in step S307 is larger than the first threshold value.
- step S307 When the tool average position Tx1 calculated in step S307 is larger than the first threshold (Yes in step S309), the controller 51 prohibits execution of the next joining (step S312) and ends this flow.
- step S307 when the tool average position Tx1 calculated in step S307 is not larger than the first threshold (No in step S309), the controller 51 determines that the tool average position Tx1 is a negative value, a positive value, or 0. Then, it is determined whether or not it has fluctuated (step S311A).
- the controller 51 refers to the history of the tool average position Tx1 stored in the storage 31, and the tool average position Tx1 varies between a negative value and a positive value or 0. It is determined whether or not.
- the history of the tool average position Tx1 stored in the storage device 31 refers to the history since the start of this flow, and the history before that is not referred to.
- the case where the tool average position Tx1 fluctuates between a negative value and a positive value or 0 means the following case.
- the controller 51 stores the tool average position Tx1 in the storage device 31 every time the joining process of the workpiece 60 is completed. For example, the first tool average position Tx1 takes a negative value, the second tool average position Tx1 takes a positive value (or 0), and the third tool average position Tx1 takes a negative value again. In such a case, the controller 51 determines that the stored tool average position Tx1 varies between a negative value and a positive value or 0.
- the stored tool average position Tx1 has a negative value and a positive value (or 0). It is not limited only to taking alternately. As a case where the tool average position Tx1 fluctuates between a negative value and a positive value or 0, for example, the tool average position Tx1 takes a negative value continuously several times, and then takes one or more After taking a positive value (or 0) for the number of times, when taking a negative value again, or the tool average position Tx1 takes a positive value (or 0) continuously several times, and then 1 or more After taking a negative value, a positive value (or 0) may be taken again.
- step S311A When the tool average position Tx1 fluctuates between a negative value and a positive value or 0 (Yes in step S311A), the controller 51 informs the user of the pin member 11 by the alarm device. In addition, a warning that there is a possibility that a part of the workpiece 60 is attached to the tip end portion of the shoulder member 12 is notified (step S312), and the process returns to the start of this flow and the next joining is executed.
- step S311A when the tool average position Tx1 does not change between a negative value and a positive value or 0 (No in step S311A), the controller 51 sets the pressing force and / or the rotational speed. Is changed (step S311). Next, the controller 51 stores the tool average position Tx1 calculated in step S307 in the storage unit 31 (step S313), returns to the start of this flow, and executes the next joining.
- the controller 51 when the first position changes between the second area and the first area or the reference position, the controller 51 notifies the warning by the alarm.
- the controller 51 may adopt a form in which the next joining is prohibited when the first position varies between the second region and the first region or the reference position.
- the controller 51 performs the next joining after performing the warning notification by the alarm device a plurality of times. A prohibited form may be adopted.
- friction stir spot welding device 50 according to the first modification may be configured similarly to the friction stir spot welding device 50 according to any one of the first to sixth modifications in the first embodiment except for the above-described features.
- the friction stir spot welding apparatus and the friction stir spot joining method of the present invention are useful because they can realize good joint quality even when continuously joined.
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Abstract
Description
軸線周りに回転し、かつ、該軸線方向に進退移動可能に構成されている円柱状のピン部材又は前記ピン部材の外周面を囲むように配置され、前記軸線周りに回転し、かつ、該軸線方向に進退移動可能に構成されている円筒状のショルダ部材の先端面が、前記被接合物の表面に接触したときにおける、位置検出器が検出した前記ピン部材又は前記ショルダ部材の先端面の前記軸線方向の位置を基準位置とする(A)と、前記ピン部材又は前記ショルダ部材が予め設定された押圧力で前記被接合物を押圧した状態で、工具駆動器が前記ピン部材又は前記ショルダ部材を前記軸線方向に進退移動させて、かつ、回転駆動器が前記ピン部材又は前記ショルダ部材を予め設定された回転数で回転させて、前記被接合物を部分的に攪拌して、前記被接合物を接合する(B)と、前記被接合物の接合工程を終了するときに、前記ピン部材及び前記ショルダ部材の先端面が面一になるように前記工具駆動器が駆動する(C)と、前記(C)の後に、前記ピン部材又は前記ショルダ部材の先端面の前記軸線方向の位置である第1位置を前記位置検出器が検出する(D)と、前記第1位置が、前記基準位置よりも前記被接合物側の領域である第1領域に位置する場合には、次回の接合工程における、前記ピン部材と前記ショルダ部材が前記被接合物を押圧する押圧力を減少させるように、及び/又は、次回の接合工程における、前記ピン部材と前記ショルダ部材の回転数を減少させるように、前記設定を変更する(E)と、を備える。
本実施の形態1に係る摩擦攪拌点接合装置は、被接合物を摩擦熱で軟化させ、攪拌することにより接合する摩擦攪拌点接合装置であって、円柱状に形成され、軸線周りの回転と該軸線に沿った方向への進退移動とが可能なように構成されているピン部材と、円筒状に形成され、ピン部材が内部に挿通されており、軸線周りの回転と該軸線に沿った方向への進退移動とが可能なように構成されているショルダ部材と、ピン部材及びショルダ部材を、軸線周りに回転させる回転駆動器と、ピン部材及びショルダ部材を、それぞれ軸線に沿って進退移動させる工具駆動器と、ピン部材又はショルダ部材における先端面の軸線方向の位置を検出する位置検出器と、制御器と、を備え、制御器は、被接合物の接合工程を開始するときに、位置検出器が検出した被接合物の表面に接触したときのピン部材又はショルダ部材における先端面の軸線方向の位置を基準位置と設定し、被接合物の接合工程を終了するときに、ピン部材及び前記ショルダ部材の先端面を面一にするように、工具駆動器を制御し、位置検出器が検出したピン部材又はショルダ部材の先端面の軸線方向の位置である第1位置が、基準位置よりも被接合物の内方側の領域である第1領域に位置する場合には、次回の接合工程における、ピン部材とショルダ部材が被接合物を押圧する押圧力を減少させるように工具駆動器を制御する、及び/又は、ピン部材とショルダ部材の回転数を減少させるように回転駆動器を制御する態様を例示するものである。
図1は、本実施の形態1に係る摩擦攪拌点接合装置の概略構成を示す模式図である。なお、図1においては、図における上下方向を摩擦攪拌点接合装置における上下方向として表している。
次に、本実施の形態1に係る摩擦攪拌点接合装置50の制御構成について、図2を参照して具体的に説明する。
次に、摩擦攪拌点接合装置50を用いて実施される摩擦攪拌点接合方法の具体的な工程について、図3A、図3B、及び図4を参照して具体的に説明する。なお、図3A、図3B、及び図4においては、被接合物60として、2枚の金属板61、62を用い、これらを重ねて点接合にて連結する場合を例に挙げている。
Ap・Pp+As・Ps=Tx ・・・ (I)
で定義されるツール平均位置Txの絶対値を小さくするように、工具駆動器53を制御する形態の一例について説明する。
4回連続して、被接合物の異なる部分の接合を実行し、各回におけるツール平均位置Txを示している。また、図6においては、ピン部材11及びショルダ部材12の圧入方向(図1における下向きの方向)を「正の方向」と定義している。さらに、図6においては、工程(6)のプロットを省略している。
図7は、連続接合を実行する場合における、本実施の形態1に係る摩擦攪拌点接合装置の動作の一例を示すフローチャートである。
次に、本実施の形態1に係る摩擦攪拌点接合装置50の変形例について、説明する。
図8は、連続接合を実行する場合における、本実施の形態1における変形例1の摩擦攪拌点接合装置の動作の一例を示すフローチャートである。
本実施の形態1における変形例2の摩擦攪拌点接合装置は、制御器が、被接合物の接合工程を終了するときに、第1位置が第1領域に位置し、かつ、被接合物の接合工程を終了から次回の接合工程を開始するまでの時間が所定の時間以内である場合には、次回の接合工程における、ピン部材とショルダ部材が被接合物を押圧する押圧力を減少させるように工具駆動器を制御する、及び/又は、ピン部材とショルダ部材の回転数を減少させるように回転駆動器を制御する態様を例示する。
図9は、連続接合を実行する場合における、本実施の形態1における変形例2の摩擦攪拌点接合装置の動作の一例を示すフローチャートである。
本実施の形態1における変形例3の摩擦攪拌点接合装置50は、実施の形態1に係る摩擦攪拌点接合装置50と基本的構成は同じであるが、加圧力検出器33が設けられていない点が異なる。また、本変形例3の摩擦攪拌点接合装置50では、実施の形態1に係る摩擦攪拌点接合装置50と同様に、連続接合動作を実行するが、基準位置の設定方法が異なる。具体的には、作業者が、ピン部材11の先端面11a又はショルダ部材12の先端面12aと、被接合物60の表面との接触を目視にて確認し、制御器51は、このときに位置検出器21が検知した位置を、記憶器31に基準位置として記憶させる。
上述したように、ピン部材11又はショルダ部材12は、被接合物60と接触した後、回転駆動され、その後、ピン部材11又はショルダ部材12のいずれか一方の部材は、工具駆動器53により、被接合物60の表面60cからさらに内部に進入(圧入)する。すなわち、ピン部材11又はショルダ部材12が駆動される前も、ピン部材11の先端面11a又はショルダ部材12の先端面12aは、被接合物60の表面60cに位置する。
本変形例5の摩擦攪拌点接合装置は、制御器が、第1位置を基準として算出されたツール平均位置Txであるツール平均位置Tx1が、予め実験等で任意に設定される適正範囲外である場合には、次回の接合工程における、ピン部材とショルダ部材が被接合物を押圧する押圧力を減少させるように工具駆動器を制御する、及び/又は、次回の接合工程における、ピン部材とショルダ部材の回転数を減少させるように回転駆動器を制御する態様を例示する。なお、本変形例5の摩擦攪拌点接合装置は、実施の形態1に係る摩擦攪拌点接合装置と同様に構成されているため、その構成の説明は省略する。
図11は、連続接合を実行する場合における、本実施の形態1における変形例5の摩擦攪拌点接合装置の動作の一例を示すフローチャートである。
本変形例6の摩擦攪拌点接合装置は、制御器が、ツール平均位置Tx1が第1閾値より大きい場合には、次回の接合工程の実行を禁止する態様を例示するものである。なお、本変形例6の摩擦攪拌点接合装置は、実施の形態1に係る摩擦攪拌点接合装置と同様に構成されているため、その構成の説明は省略する。
図12A及び図12Bは、連続接合を実行する場合における、本実施の形態1における変形例6の摩擦攪拌点接合装置の動作の一例を示すフローチャートである。
本実施の形態2に係る摩擦攪拌点接合装置は、制御器が、被接合物の接合工程を終了するごとに、第1位置が、基準位置よりも被接合物から離れた側の領域である第2領域と、基準位置又は第1領域と、に変動する場合には、ピン部材及び/又はショルダ部材に被接合物の一部が付着していると判断し、報知器により警告を報知する、及び/又は次回の接合工程の実行を禁止する態様を例示するものである。なお、本実施の形態2に係る摩擦攪拌点接合装置は、実施の形態1に係る摩擦攪拌点接合装置と同様に構成されているため、その構成の説明は省略する。
図13A及び図13Bは、連続接合を実行する場合における、本実施の形態2に係る摩擦攪拌点接合装置の動作の一例を示すフローチャートである。
次に、本実施の形態2に係る摩擦攪拌点接合装置50の変形例について、説明する。
図14A、図14B、及び図14Cは、連続接合を実行する場合における、本実施の形態2における変形例1の摩擦攪拌点接合装置の動作の一例を示すフローチャートである。
11a 先端面
12 ショルダ部材
12a 先端面
21 位置検出器
31 記憶器
32 入力器
33 加圧力検出器
41 クランプ駆動器
50 摩擦攪拌点接合装置
51 制御器
52 工具固定器
53 工具駆動器
54 クランプ部材
54a 先端面
55 裏当て支持部
56 裏当て部材
56a 支持面
57 回転駆動器
60 被接合物
60a 塑性流動部
60b 接合部
60c 表面
60d 裏面
61 金属板
62 金属板
521 回転工具固定器
522 クランプ固定器
531 ピン駆動器
532 ショルダ駆動器
Claims (20)
- 被接合物を摩擦熱で軟化させ、攪拌することにより接合する摩擦攪拌点接合装置であって、
円柱状に形成され、軸線周りの回転と該軸線に沿った方向への進退移動とが可能なように構成されているピン部材と、
円筒状に形成され、前記ピン部材が内部に挿通されており、前記軸線周りの回転と該軸線に沿った方向への進退移動とが可能なように構成されているショルダ部材と、
前記ピン部材及び前記ショルダ部材を、前記軸線周りに回転させる回転駆動器と、
前記ピン部材及び前記ショルダ部材を、それぞれ前記軸線に沿って進退移動させる工具駆動器と、
前記ピン部材又は前記ショルダ部材における先端面の前記軸線方向の位置を検出する位置検出器と、
制御器と、を備え、
前記制御器は、前記被接合物の接合工程を開始するときに、前記位置検出器が検出した前記被接合物の表面に接触したときの前記ピン部材又は前記ショルダ部材における先端面の前記軸線方向の位置を基準位置と設定し、
前記被接合物の接合工程を終了するときに、前記ピン部材及び前記ショルダ部材の先端面を面一にするように、前記工具駆動器を制御し、前記位置検出器が検出した前記ピン部材又は前記ショルダ部材の先端面の前記軸線方向の位置である第1位置が、前記基準位置よりも前記被接合物の内方側の領域である第1領域に位置する場合には、次回の接合工程における、前記ピン部材と前記ショルダ部材が前記被接合物を押圧する押圧力を減少させるように前記工具駆動器を制御する、及び/又は、前記ピン部材と前記ショルダ部材の回転数を減少させるように前記回転駆動器を制御する、摩擦攪拌点接合装置。 - 前記制御器は、前記被接合物の接合工程を終了するときに、前記第1位置が前記第1領域に位置し、かつ、次回の接合工程を開始するときに、前記ピン部材及び前記ショルダ部材の温度が所定の温度以上である場合には、次回の接合工程における、前記ピン部材と前記ショルダ部材が前記被接合物を押圧する押圧力を減少させるように前記工具駆動器を制御する、及び/又は、前記ピン部材と前記ショルダ部材の回転数を減少させるように前記回転駆動器を制御する、請求項1に記載の摩擦攪拌点接合装置。
- 前記制御器は、前記被接合物の接合工程を終了するときに、前記第1位置が前記第1領域に位置し、かつ、前記被接合物の接合工程を終了から次回の接合工程を開始するまでの時間が所定の時間以内である場合には、次回の接合工程における、前記ピン部材と前記ショルダ部材が前記被接合物を押圧する押圧力を減少させるように前記工具駆動器を制御する、及び/又は、前記ピン部材と前記ショルダ部材の回転数を減少させるように前記回転駆動器を制御する、請求項1又は2に記載の摩擦攪拌点接合装置。
- 前記制御器は、前記被接合物の接合工程を終了するごとに、前記第1位置が、前記基準位置よりも前記被接合物から離れた側の領域である第2領域と、前記第1領域又は前記基準位置と、に変動する場合には、前記ピン部材及び/又は前記ショルダ部材に前記被接合物の一部が付着していると判断し、報知器により警告を報知する、及び/又は次回の接合工程の実行を禁止する、請求項1~3のいずれか1項に記載の摩擦攪拌点接合装置。
- 前記制御器は、前記被接合物の接合工程において、前記ピン部材の先端面の断面積をAp、前記ショルダ部材の先端面の断面積をAs、前記ピン部材が前記被接合物の表面から圧入したときの圧入深さをPp、前記ショルダ部材が前記被接合物の表面から圧入したときの圧入深さをPsとしたときに、次式
Ap・Pp+As・Ps=Tx
で定義されるツール平均位置Txの絶対値を小さくするように、前記工具駆動器を制御する、請求項1~4のいずれか1項に記載の摩擦攪拌点接合装置。 - 前記制御器は、前記ツール平均位置Tx=0となるように、前記工具駆動器を制御する、請求項5に記載の摩擦攪拌点接合装置。
- 前記制御器は、前記基準位置と前記第1位置により算出されたツール平均位置Txであるツール平均位置Tx1が、予め設定された適正範囲外である場合には、次回の接合工程における、前記ピン部材と前記ショルダ部材が前記被接合物を押圧する押圧力を減少させるように前記工具駆動器を制御する、及び/又は、前記ピン部材と前記ショルダ部材の回転数を減少させるように前記回転駆動器を制御する、請求項5に記載の摩擦攪拌点接合装置。
- 前記制御器は、前記ツール平均位置Tx1が、前記適正範囲よりも大きい値である第1閾値より大きい場合には、次回の接合工程の実行を禁止する、請求項7に記載の摩擦攪拌点接合装置。
- 前記制御器は、前記被接合物の接合工程を終了するごとに、前記ツール平均位置Tx1が、マイナスの値と、プラスの値又は0と、に変動する場合には、前記ピン部材及び/又は前記ショルダ部材に前記被接合物の一部が付着していると判断し、報知器により警告を報知する、及び/又は、次回の接合工程の実行を禁止する、請求項7又は8に記載の摩擦攪拌点接合装置。
- 前記軸線方向に進退移動可能に構成されているクランプ部材と、
前記クランプ部材を、前記軸線に沿って進退移動するように動作させるクランプ部材駆動器と、をさらに備え、
前記制御器は、前記第1位置が前記第1領域に位置する場合には、次回の接合工程における、前記ピン部材、前記ショルダ部材、及び前記クランプ部材が前記被接合物材を押圧する押圧力を減少させるように、前記工具駆動器及び/又は前記クランプ部材駆動器を制御する、請求項1~9のいずれか1項に記載の摩擦攪拌点接合装置。 - 被接合物を摩擦熱で軟化させ、攪拌することにより接合する摩擦攪拌点接合方法であって、
軸線周りに回転し、かつ、該軸線方向に進退移動可能に構成されている円柱状のピン部材又は前記ピン部材の外周面を囲むように配置され、前記軸線周りに回転し、かつ、該軸線方向に進退移動可能に構成されている円筒状のショルダ部材の先端面が、前記被接合物の表面に接触したときにおける、位置検出器が検出した前記ピン部材又は前記ショルダ部材の先端面の前記軸線方向の位置を基準位置とする(A)と、
前記ピン部材又は前記ショルダ部材が予め設定された押圧力で前記被接合物を押圧した状態で、工具駆動器が前記ピン部材又は前記ショルダ部材を前記軸線方向に進退移動させて、かつ、回転駆動器が前記ピン部材又は前記ショルダ部材を予め設定された回転数で回転させて、前記被接合物を部分的に攪拌して、前記被接合物を接合する(B)と、
前記被接合物の接合工程を終了するときに、前記ピン部材及び前記ショルダ部材の先端面が面一になるように前記工具駆動器が駆動する(C)と、
前記(C)の後に、前記ピン部材又は前記ショルダ部材の先端面の前記軸線方向の位置である第1位置を前記位置検出器が検出する(D)と、
前記第1位置が、前記基準位置よりも前記被接合物側の領域である第1領域に位置する場合には、次回の接合工程における、前記ピン部材と前記ショルダ部材が前記被接合物を押圧する押圧力を減少させるように、及び/又は、次回の接合工程における、前記ピン部材と前記ショルダ部材の回転数を減少させるように、前記設定を変更する(E)と、を備える、摩擦攪拌点接合方法。 - 前記(E)では、前記第1位置が、前記第1領域に位置し、かつ、次回の接合工程を開始するときに、前記ピン部材及び前記ショルダ部材の温度が所定の温度以上である場合に、次回の接合工程における前記設定を変更する、請求項11に記載の摩擦攪拌点接合方法。
- 前記(E)では、前記第1位置が、前記第1領域に位置し、かつ、前記(D)から次回の接合工程を開始するまでの時間が所定の時間以内である場合に、次回の接合工程における前記設定を変更する、請求項11又は12に記載の摩擦攪拌点接合方法。
- 前記被接合物の接合工程を終了するごとに、前記(D)で検出した第1位置が、前記基準位置よりも前記被接合物から離れた側の領域である第2領域と、前記第1領域又は前記基準位置と、に変動する場合には、前記ピン部材及び/又は前記ショルダ部材に前記被接合物の一部が付着していると判断する(F)と、
前記(F)で前記ピン部材及び/又は前記ショルダ部材に前記被接合物の一部が付着していると判断すると、報知機により警告を報知する、及び/又は次回の接合工程を禁止する(G)と、をさらに備える、請求項11~13のいずれか1項に記載の摩擦攪拌点接合方法。 - 前記(B)における前記設定は、前記ピン部材の先端面の断面積をAp、前記ショルダ部材の先端面の断面積をAs、前記ピン部材が前記被接合物の表面から圧入したときの圧入深さをPp、前記ショルダ部材が前記被接合物の表面から圧入したときの圧入深さをPsとしたときに、次式
Ap・Pp+As・Ps=Tx
で定義されるツール平均位置Txの絶対値を小さくするように、前記工具駆動器の動作量が設定されている、請求項11~14のいずれか1項に記載の摩擦攪拌点接合方法。 - 前記(B)における前記設定は、前記ツール平均位置Tx=0となるように、前記工具駆動器の動作量が設定されている、請求項15に記載の摩擦攪拌点接合方法。
- 前記(E)では、前記基準位置と前記第1位置により算出されたツール平均位置Txであるツール平均位置Tx1が、予め設定された適正範囲外の場合には、次回の接合工程における、前記ピン部材と前記ショルダ部材が前記被接合物を押圧する押圧力、及び/又は、次回の接合工程における、前記ピン部材と前記ショルダ部材の回転数を減少させるように、前記設定を変更する、請求項16に記載の摩擦攪拌点接合方法。
- 前記(E)において、前記ツール平均位置Tx1が、前記適正範囲よりも大きい値である第1閾値より大きい場合には、次回の接合工程の実行を禁止する(H)をさらに備える、請求項17に記載の摩擦攪拌点接合方法。
- 前記(F)では、前記ツール平均位置Tx1が、マイナスの値と、プラスの値又は0と、に変動する場合には、前記ピン部材及び/又は前記ショルダ部材に前記被接合物の一部が付着していると判断する、請求項17又は18に記載の摩擦攪拌点接合方法。
- 前記(B)では、前記ピン部材及び前記ショルダ部材の少なくとも一方の部材、並びに、クランプ部材が予め設定された押圧力で前記被接合物を押圧した状態で、工具駆動器が前記ピン部材又は前記ショルダ部材を前記軸線方向に進退移動させて、かつ、回転駆動器が前記ピン部材又は前記ショルダ部材を予め設定された回転数で回転させて、前記被接合物を部分的に攪拌して、前記被接合物を接合し、
前記(E)では、前記第1位置が前記第1領域に位置する場合には、次回の接合工程における、前記ピン部材及び前記ショルダ部材の少なくとも一方の部材と、並びに、前記クランプ部材と、が前記被接合物材を押圧する押圧力を減少させるように、前記設定を変更する、請求項11~19のいずれか1項に記載の摩擦攪拌点接合方法。
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CN107107253A (zh) | 2017-08-29 |
JPWO2016063538A1 (ja) | 2017-05-25 |
KR101854794B1 (ko) | 2018-05-08 |
EP3210711A4 (en) | 2018-07-18 |
CN107107253B (zh) | 2019-07-09 |
EP3210711B1 (en) | 2020-03-18 |
US10201873B2 (en) | 2019-02-12 |
KR20170045360A (ko) | 2017-04-26 |
JP6244041B2 (ja) | 2017-12-06 |
EP3210711A1 (en) | 2017-08-30 |
US20170304935A1 (en) | 2017-10-26 |
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