Friction welding device

Abstract

To provide a frictional pressure-welding device capable of performing deburring continuously by itself after completion of frictional pressure-welding without moving the workpiece to a different machine.SOLUTION: A frictional pressure-welding device 1 comprises rotation side holding means 10 which holds a rotation-side workpiece W1 rotatably on a center line L1 of rotation, and non-rotation side holding means 20 which is arranged opposite the rotation side holding means 10 and holds a non-rotation side workpiece W2 in a non-rotational state, and approaching / leaving means (not shown in Fig.) which lets the rotation side holding means 10 and non-rotation side holding means 20 relatively approach or leave each other, and the non-rotation side holding means 20 has a support base 21 which supports the non-rotation side workpiece W2 from below and pressing means 22 which presses the rotation side workpiece W2 supported by the support base 21 against the support base 21. The frictional pressure-welding device further comprises base elevation means which retracts the support base 21 downward after frictional pressure-welding is completed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a friction welding apparatus.

Background Art

[0002] As an apparatus for joining a plurality of metal workpieces, a friction welding apparatus that utilizes frictional heat is known. In FIG. 1 of Patent Document 1, an L-side chuck 11 (rotating-side holding means) that holds a workpiece W on the rotating side 1 and an R-side chuck 21 (non-rotating-side holding means) that holds a workpiece W on the non-rotating side 2 are disclosed in a friction welding apparatus.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, consider a friction welding apparatus provided with a clamp 90 shown in FIG. 9 instead of a chuck as the non-rotating-side holding means. FIG. 9 is a view of the clamp 90 adopted as the non-rotating-side holding means as seen from the rotating-side holding means (not shown) side. The clamp 90 includes a support base 91 that supports a workpiece W on the non-rotating side from below 9 and a pressing means 92 that presses the workpiece W 9 against the support base 91. As a result, the workpiece W 9 can be inserted from above, and the size in the longitudinal direction of the friction welding apparatus (a direction substantially parallel to the rotation axis of the workpiece W 1 ) can be made compact. Further, even after the completion of friction welding, the joined workpiece (hereinafter also referred to as the joined workpiece) can be easily removed without separating the clamp 90 from the rotating-side holding means. Also, although it has a simpler structure than a chuck, the workpiece W 9It can be firmly held and fixed. Furthermore, the shape of the workpiece that can be held is less restricted.

[0005] However, in the friction welding device 9 shown in FIG. 9, even if the clamp 90 is unclamped after the completion of friction welding, the joined workpiece remains in contact with the support base 91. For this reason, there are the following problems when attempting to remove burrs as is. 1. If the joined workpiece is operated (rotated or moved), there is a risk of damaging the joined workpiece. 2. If the clamp 90 is separated from the rotation-side holding means to secure the operating space for the burr removal tool for removing burrs, there is a risk of damaging the joined workpiece. Therefore, when removing burrs, it is necessary to remove the joined workpiece from the friction welding device after the completion of friction welding and separately move it to a burr removal machine to remove burrs, which is a problem of taking time and effort.

[0006] The present invention has been made to solve the above problems, and provides a friction welding device capable of continuously removing burrs with the device (without moving to another machine) after the completion of friction welding.

Means for Solving the Problems

[0007] The above problems are Rotation-side holding means for holding the rotation-side workpiece in a rotatable state around the rotation center line L 1 and non-rotation-side holding means arranged opposite to the rotation-side holding means for holding the non-rotation-side workpiece in a non-rotating state on the extension line of the rotation center line L and approaching / separating means for relatively approaching or separating the rotation-side holding means and the non-rotation-side holding means 1 are provided, and a friction welding device for joining the rotation-side workpiece and the non-rotation-side workpiece by frictional heat wherein the non-rotation-side holding means includes a support base for supporting the non-rotation-side workpiece from below, and ​Pressing means for pressing a non-rotating side work supported by a support base against the support base and has base lifting means for retracting the support base downward after completion of friction welding Friction welding device is solved by providing.

[0008] In the friction welding device according to the present invention, it is preferable that the pressing means is a swing lever that is swingably supported.

[0009] Further, in the friction welding device according to the present invention, it is also preferable that the base lifting means includes a horizontal movement mechanism that operates in a substantially horizontal direction and an operation direction conversion mechanism that converts the substantially horizontal movement by the horizontal movement mechanism into an up-and-down movement. As the operation direction conversion mechanism in this case, for example, one using a cam or one using a rack and pinion can be adopted.

Effect of the Invention

[0010] According to the present invention, since the support base can be retracted downward, it is possible to provide a friction welding device capable of continuously removing burrs after completion of friction welding without damaging the joined work.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0012] Preferred embodiments of the present invention will be described more specifically with reference to the drawings. However, the technical scope of the present invention is not limited to the configurations described below. The friction welding device according to the present invention can be appropriately modified without departing from the gist of the present invention.

[0013] 1. First Embodiment FIG. 1 is a plan view of the friction welding device 1 of the first embodiment. FIG. 2 is a partial cutaway view of the non-rotating side holding means 20 in the friction welding device 1 of the first embodiment as seen from the rotating side holding means 10 side. FIGS. 1 and 2 and FIGS. 3 to 8 described later show orthogonal coordinates composed of the x-axis, y-axis, and z-axis. The directions of the orthogonal coordinates are common in FIGS. 1 to 8. In the following, for convenience of explanation, the positive side in the z-axis direction may be expressed as "up" and the negative side in the z-axis direction may be expressed as "down", but the z-axis does not necessarily have to be parallel to the vertical direction.

[0014] As shown in FIG. 1, the friction welding device 1 includes a rotating side holding means 10, a non-rotating side holding means 20, and a burr removing tool 30. This friction welding device 1 is for a rotating side workpiece W 1 (hereinafter, simply referred to as "workpiece W" 1(which may be described as ").) and the non-rotating side work W 2 (hereinafter, simply referred to as "work W 2 (which may be described as ").) is used for friction pressure welding with the non-rotating side work W

[0015] The rotating side holding means 10 is a chuck that holds the work W 1 in a rotatable state around the rotation center line L 1 , but the specific configuration is not particularly limited

[0016] The non-rotating side holding means 20 is arranged opposite to the rotating side holding means 10. This non-rotating side holding means 20 is for holding the work W 2 in a non-rotating state. When the work W 2 is held by the non-rotating side holding means 20, the work W 1 is arranged on the extension line of the rotation center line L 1 of the work W 2 As shown in FIG. 2, the non-rotating side holding means 20 includes a support base 21 that supports the work W 2 from below, a pressing means 22 that presses the work W 2 against the support base 21, and a pressing drive means 23 that drives the pressing means 22. Thereby, while making the non-rotating side holding means 20 have a simple structure, the work W 2 can be strongly held so as not to rotate together with the work W 1

[0017] The structure of the pressing means 22 is not particularly limited as long as it can press the work W 2 against the support base 21. The pressing means 22 can also be composed of one member. As shown in FIG. 2, the pressing means 22 can employ a pair of swing levers 22a, 22b that are swingably supported around a swing center line C 1 substantially parallel to the rotation center line L a , C b . A pair of swing levers 22a, 22b are respectively provided with pressing protrusions 22a 1 , 22b 1

[0018] ​​ When a pair of swing levers 22a and 22b are moved to the positions shown by solid lines in Fig. 2 (swung in a direction approaching each other), a pair of pressing protrusions 22a 1 , 22b 1 can press and hold (clamp) the work W 2 against the support base 21. Also, when a pair of swing levers 22a and 22b are moved to the positions shown by broken lines in the same figure (swung in a direction away from each other), a pair of pressing protrusions 22a 1 , 22b 1 recede from above the work W 2 , and the work W 2 can be released (unclamped). By adopting this configuration, the work W 2 can be held more strongly according to the principle of a lever. Also, through the gap between the pair of swing levers 22a and 22b in the unclamped state, the work W 2 can also be installed from above with respect to the support base 21. Therefore, for example, even if the work W 2 is a long bar material or the like, the work W 2 can be easily held by the non-rotating side holding means 20.

[0019] Figs. 3 and 4 are partially broken enlarged views of the peripheral portion P of the support base 21 in the non-rotating side holding means of Fig. 2. Fig. 3 shows a state where the support base 21 is in an upper position, and Fig. 4 shows a state where the support base 21 is in a lower position. The support base 21 of the non-rotating side holding means 20 can be moved (lifted and lowered) between an upper position (Fig. 3) and a lower position (Fig. 4) by a base lifting and lowering means 100 described later. When clamping the work W 2 , the support base 21 is arranged in the upper position.

[0020] The burr remover 30 (Fig. 1) is for removing burrs generated near the joint portion between the work W 1 and the work W 2 after the completion of friction pressure welding.

[0021] Also, although not shown in the figure, the friction welding apparatus 1 includes an approaching / separating means for relatively approaching or separating the rotating-side holding means 10 and the non-rotating-side holding means 20 in a direction substantially parallel to the rotation center line L 1 As shown by the double-headed arrow D in FIG. 1, the approaching / separating means in the friction welding apparatus 1 of FIG. 1 moves only the non-rotating-side holding means 20. However, the approaching / separating means is not limited to this, and may move only the rotating-side holding means 10, or may move both the rotating-side holding means 10 and the non-rotating-side holding means 20 1 Hereinafter, the procedure for friction welding between the work W

[0022] and the work W 1 using the friction welding apparatus 1 of the first embodiment will be described. The friction welding method using the friction welding apparatus 1 includes a work mounting step, a work joining step, a base retracting step, and a burr removing step 2 The work mounting step is a step of mounting the work W

[0023] on the rotating-side holding means 10 (FIG. 1) and mounting the work W 1 on the non-rotating-side holding means 20. In the non-rotating-side holding means 20 in the unclamped state, as shown by the broken line in FIG. 2, since the pair of swing levers 22a and 22b are separated from each other, the work W 2 can be installed from above with respect to the support base 21 through between the pair of swing levers 22a and 22b. When the work mounting step is completed, the next work joining step is performed 2 The work joining step is a step of joining the work W

[0024] and the work W 1 by friction welding. First, the non-rotating-side holding means 20 is brought close to the rotating-side holding means 10 by the approaching / separating means, and the work W 2 and the work W 1 are brought into contact. Subsequently, the work W 2 is rotated by the rotating-side holding means 10, whereby the work W 1 and the work W 1 and the work W 2Generates frictional heat on the contact surface with. Due to this frictional heat, the workpiece W 1 and the workpiece W 2 soften the vicinity of the contact surface in, and the workpiece W 1 and the workpiece W 2 can be joined. The specific procedure of the workpiece joining process is not limited to the above. For example, the workpiece W 1 and the workpiece W 2 while in a separated state, the rotation of the workpiece W 1 by the rotation-side holding means 10 is started, and the workpiece W 1 may be brought into contact with the workpiece W 2 while rotating. When the workpiece joining process is completed, the next base retraction process is performed.

[0025] The base retraction process is a process of unclamping the non-rotation-side holding means 20 and retracting the support base 21 arranged at the upper position (Figure 3) to the lower position (Figure 4). At this time, since the joined workpiece W j remains held by the rotation-side holding means 10, as shown in Figure 4, the workpiece W j becomes in a state of floating (not in contact) from the support base 21. Although the next burr removal process can be performed in this state, it is preferable to further perform a holding means separation process of separating the non-rotation-side holding means 20 from the rotation-side holding means 10 by the approaching and separating means and then perform the burr removal process. Thereby, the operating space of the burr removal tool 30 (Figure 1) can be secured.

[0026] The burr removal process is a process of shaving off burrs by bringing the burr removal tool 30 close to the workpiece while rotating the joined workpiece by the rotation-side holding means 10 (Figure 1). When the burr removal process is completed, the friction pressure welding method is completed.

[0027] In this way, since the support base 21 can be retracted to the lower position (Figure 4) after the friction pressure welding is completed, the joined workpiece W j can be prevented from contacting the support base 21. Thereby, the joined workpiece W jEven if it is moved relative to the non-rotating side holding means, the workpiece will not be damaged. Therefore, the workpiece W can be rotated while being held by the rotating side holding means 10 to remove burrs. That is, the trouble and time for removing the burrs by removing the workpiece W from the friction pressure welding device 1 (moving it to another device) can be saved. j while being held by the rotating side holding means 10 to remove burrs. That is, the workpiece W j from the friction pressure welding device 1 (moving it to another device) can save the labor and time for removing burrs.

[0028] The base lifting means 100 for lifting and lowering the support base 21 is not particularly limited in its specific configuration. For example, the support base 21 can be directly lifted and lowered by a vertical movement mechanism that operates in a substantially vertical direction. However, in this case, the pressing force by the pressing means 22 (swing levers 22a, 22b) (the force for pressing the workpiece W 2 against the support base 21) may be directly transmitted to the vertical movement mechanism, and there is a risk that the vertical movement mechanism will be overloaded. If the vertical movement mechanism cannot withstand the pressing force of the pressing means 22, the support base 21 may move in the vertical direction, which may also make it difficult to improve the positional accuracy of the workpiece W 2 in the vertical direction.

[0029] Therefore, the base lifting means 100 is provided with an actuator (horizontal movement mechanism) 110 that operates in a substantially horizontal direction and an operation direction conversion mechanism 120 that converts the substantially horizontal movement by the actuator 110 into a vertical movement. Thereby, the pressing force of the pressing means 22 is not directly transmitted to the actuator 110, and the load on the actuator 110 can be reduced. Also, it is easy to maintain high positional accuracy of the workpiece W 2 in the vertical direction.

[0030] The operation direction of the actuator (horizontal movement mechanism) 110 is not particularly limited as long as it is substantially horizontal. The operation direction of the actuator 110 is preferably non-parallel to the rotation center line L 1 of the workpiece W 1 Thereby, the size of the non-rotating side holding means 20 in the direction parallel to the rotation center line L 1 can be made compact. The operation direction of the actuator 110 is the workpiece W1 is more preferably substantially perpendicular to the rotation center line L 1 of 1 .

[0031] The operation direction conversion mechanism 120 is not particularly limited in its specific configuration as long as it can convert a substantially horizontal operation into a vertical operation. In the first embodiment, as the operation direction conversion mechanism 120, as shown in FIG. 3, a cam 121 for direction conversion that can be moved in a substantially horizontal direction by the actuator 110 is adopted. A guided surface 21a provided at the lower end of the support base 21 is in contact with a guiding surface 121a provided on the upper surface of the cam 121 for direction conversion.

[0032] When the actuator 110 is driven to move the direction conversion cam 121 in the positive y-axis direction (left side toward the paper surface of FIG. 3) from the state where the support base 21 is in the upper position (FIG. 3), the guided surface 21a is guided by the guiding surface 121a and descends. Thereby, the support base 21 can be retracted to the lower position (FIG. 4). Conversely, when the direction conversion cam 121 is moved in the negative y-axis direction (right side toward the paper surface of FIG. 4) from the state where the support base 21 is in the lower position (FIG. 4), the guided surface 21a is guided by the guiding surface 121a and ascends. Thereby, the support base 21 can be moved to the upper position (FIG. 3).

[0033] Thus, when a cam is adopted as the operation direction conversion mechanism 120, the structure of the operation direction conversion mechanism 120 can be simplified. Therefore, the manufacturing cost of the friction pressure welding device 1 can be suppressed, and the friction pressure welding device 1 can be made less prone to failure. Further, since the pressing force of the pressing means 22 can be received by the guiding surface 121a, the load applied to the actuator 110 can be reduced, and the positional accuracy of the support base 21 in the vertical direction can also be improved.

[0034] The guiding surface 121a is not particularly limited in shape as long as it can guide the guided surface 21a. The guiding surface 121a can be formed in a planar shape inclined with respect to the horizontal direction. In this case, the inclination angle θ (FIG. 4) of the guiding surface 121a with respect to the horizontal plane is not limited. However, if the inclination angle θ is too small, it becomes difficult to ensure the lifting distance of the support base 21. For this reason, the inclination angle θ is preferably 3° or more, and more preferably 5° or more. On the other hand, if the inclination angle θ is too large, it becomes difficult to reduce the burden on the actuator 110. For this reason, the angle θ is preferably 10° or less, and more preferably 20° or less. In the first embodiment, the angle θ is about 10°.

[0035] 3. Second Embodiment FIGS. 5 and 6 are partial broken-away views showing an enlarged periphery of the support base 21 among the non-rotating side holding means in the friction welding apparatus according to the second embodiment. FIG. 5 shows a state where the support base 21 is in the upper position, and FIG. 6 shows a state where the support base 21 is in the lower position. FIG. 7 is a cross-sectional view showing the non-rotating side holding means 20 in FIG. 5 cut along the plane A-A in the same figure.

[0036] In the friction welding apparatus 1 according to the second embodiment, the configuration of the operation direction conversion mechanism 120 is different from that of the friction welding apparatus 1 according to the first embodiment. That is, as shown in FIG. 5, the operation direction conversion mechanism 120 includes a rack 122 attached to the actuator 110 and a pinion 123 (see also FIG. 7) combined with the rack 122. The pinion 123 is rotatably held about a rotation center line L that is substantially perpendicular (substantially parallel to the z-axis) by a bearing 124. 2 The pinion 123 and the bearing 124 are housed in a pinion case 125. Thereby, the position of the pinion 123 is restricted. A female screw portion 123a is formed inside the pinion 123. The center line of the female screw portion 123a substantially coincides with the rotation center line L. 2 A male screw portion 126 is screwed into the female screw portion 123a, and the upper end portion of the male screw portion 126 is connected to the lower end portion of the support base 21.

[0037] When the actuator 110 is driven to move the rack 122 in the negative y-axis direction (to the right side toward the paper surface in FIG. 5) from the state where the support base 21 is in the upper position (FIG. 5), the pinion 123 rotates, and the internal female thread portion 123a of the pinion 123 also rotates. As a result, the male thread portion 126 screwed into the female thread portion 123a descends, and the support base 21 can be retracted to the lower position (FIG. 6). Conversely, when the rack 122 is moved in the positive y-axis direction (to the left side toward the paper surface in FIG. 6) from the state where the support base 21 is in the lower position (FIG. 6), the pinion 123 and the female thread portion 123a rotate in the opposite direction to the above, and the male thread portion 126 ascends, and the support base 21 can be moved to the upper position (FIG. 5).

[0038] Thus, when a rack and pinion is adopted as the operation direction conversion mechanism 120, the support base 21 can be positioned with high accuracy. In addition, since it is easy to adjust the position of the support base 21, it is also possible to correspond to workpieces W of different shapes 2 The same components as those in the first embodiment can be adopted for the components other than those described above.

[0039] 4. Third Embodiment FIG. 8 is a plan view of the friction welding apparatus 1 according to the third embodiment. The friction welding apparatus 1 shown in FIG. 8 includes a rotating side holding means 10, a first non-rotating side holding means 40, and a second non-rotating side holding means 50. This friction welding apparatus 1 is used to frictionally weld a rotating side workpiece W 1 and a first non-rotating side workpiece W 1 arranged on one side of the workpiece W 4 (hereinafter, may be simply referred to as "workpiece W 4 "), and a second non-rotating side workpiece W 1 arranged on the other side of the workpiece W 5 (hereinafter, may be simply referred to as "workpiece W 5 ").

[0040] The rotating side holding means 10 holds the workpiece W 1 around the rotation center line L 1A chuck that holds the workpiece in a rotatable state, but the specific configuration is not particularly limited. The first non-rotating side holding means 40 holds the workpiece W 4 in a non-rotating state and is arranged opposite to one side of the rotating side holding means 10. The second non-rotating side holding means 50 holds the workpiece W 5 in a non-rotating state and is arranged opposite to the other side of the rotating side holding means 10.

[0041] The first non-rotating side holding means 40 and the second non-rotating side holding means 50 each hold the workpiece W 4 ,W 5 from below, similar to the non-rotating side holding means 20 (Fig. 2) in the first embodiment, with support bases 41, 51 (Fig. 8) that support the workpiece W 4 ,W 5 , and pressing means 42, 52 that press the workpiece W

[0042] against the support bases 41, 51, and base lifting means (not shown) that retracts the support bases 41, 51 downward after the frictional pressure contact is completed. 1 The friction pressure welding device 1 shown in Fig. 8 can also relatively approach or separate the rotating side holding means 10 and the first non-rotating side holding means 40 in a direction substantially parallel to the rotation center line L 1 , and can relatively approach or separate the rotating side holding means 10 and the second non-rotating side holding means 50 in a direction substantially parallel to the rotation center line L 4 . The friction pressure welding device 1 in Fig. 8 is also provided with an approaching and separating means (not shown). As shown by the double arrow D F in the same figure, only the first non-rotating side holding means 40 is moved. In addition, the rotating side holding means 10 is supported in a state where it can move in a direction substantially parallel to the rotation center line L 1 when an external force is applied, as shown by the double arrow D

[0043] in the same figure. The second non-rotating side holding means 50 is fixed to the base (not shown) of the friction pressure welding device 1 and does not move.When performing friction welding, first, the workpiece W is held by the rotating-side holding means 10, the first non-rotating-side holding means 40, and the second non-rotating-side holding means 50, respectively. 1 , the workpiece W 4 and the workpiece W 5 are held. At this stage, the workpiece W 1 , the workpiece W 4 and the workpiece W 5 are separated from each other. Subsequently, the first non-rotating-side holding means 40 is moved closer to the rotating-side holding means 10 by the approaching and separating means, and the workpiece W 1 and the workpiece W 4 are brought into contact with each other. The approaching and separating means continues to move the first non-rotating-side holding means 40 even after the workpiece W 1 and the workpiece W 4 are in contact. As a result, the workpiece W 4 presses the workpiece W 1 , and the rotating-side holding means 10 is moved closer to the second non-rotating-side holding means 50, and the workpiece W 1 and the workpiece W 5 are brought into contact with each other. When the workpiece W 1 is rotated in this state, frictional heat is generated on the contact surface between the workpiece W 1 and the workpiece W 4 , and on the contact surface between the workpiece W 1 and the workpiece W 5 , and the workpiece W 4 , the workpiece W 1 and the workpiece W 5 can be joined simultaneously. However, the specific procedure for performing friction welding is not limited to this. For example, the workpiece W 1 may be rotated, and the workpiece W 1 and the workpiece W 4 , and the workpiece W 1 and the workpiece W 5 may be brought into contact with each other. Also, instead of joining the workpiece W 4 , the workpiece W 1 and the workpiece W 5 simultaneously, first the workpiece W 1 and the workpiece W 4 are joined, and subsequently, the workpiece W 1 and the workpiece W 4 are joined to the joined ones of the workpiece W 5They may be joined. The approaching and separating means is not limited to the above configuration. The approaching and separating means may be, for example, those that move the first non-rotating side holding means 40 and the second non-rotating side holding means 50 respectively. Alternatively, it may be those that move the rotating side holding means 10 and the first non-rotating side holding means 40 respectively.

[0044] After the completion of friction welding, the first non-rotating side holding means 40 and the second non-rotating side holding means 50 are unclamped, and the joined workpiece is removed from the rotating side holding means 10. At this time, when the first non-rotating side holding means 40 and the second non-rotating side holding means 50 remain close to the rotating side holding means 10, it is difficult to remove the workpiece from the rotating side holding means 10. In this regard, in the friction welding apparatus 1 shown in FIG. 8, the support bases 41, 51 can be retracted downward by a base lifting means (not shown) so as not to contact the joined workpiece. Therefore, with the joined workpiece held by the rotating side holding means 10, the first non-rotating side holding means 40 and the second non-rotating side holding means 50 can be separated from the rotating side holding means 10. As a result, since a working area for unclamping the rotating side holding means 10 is secured, the work of unclamping the rotating side holding means 10 becomes easy. Also, even if the joined workpiece is moved in the longitudinal direction when removing it from the rotating side holding means 10, it is less likely to damage the workpiece. Further, similar to the first and second embodiments, since the joined workpiece can be rotated without being damaged, deburring can be performed without moving the joined workpiece to another machine. For configurations other than those described above, those similar to the first embodiment or the second embodiment can be adopted.

Explanation of Reference Numerals

[0045] 1 Friction welding apparatus 10 Rotating side holding means 20 Non-rotating side holding means 21 Support base 22 Pressing means 22a Swing lever (pressing means) 22b Swing lever (pressing means) 100 Base lifting means 110 Actuator (Horizontal Operating Mechanism) 120 Motion Direction Conversion Mechanism 121 Cam for Direction Conversion 122 Rack 123 Pinion 123a Female Thread Portion 126 Male Thread Portion W 1 Rotating Side Workpiece W 2 Non-Rotating Side Workpiece L 1 Axis of Rotation

Claims

1. Rotating workpiece is aligned along the center line L １ A rotating side holding means for holding the rotating member in a rotatable state around the rotating member; The non-rotating workpiece is held against the rotating-side holding means along the rotation center line L. １ a non-rotating side holding means for holding the rotating member in a non-rotating state on an extension line of the rotating member; an approaching / separating means for relatively moving the rotating side holding means and the non-rotating side holding means toward or away from each other; Equipped with The rotating workpiece and the non-rotating workpiece are joined by frictional heat. A friction welding apparatus comprising: The non-rotating side holding means is A support base that supports a non-rotating workpiece from below; a pressing means for pressing the non-rotating work supported by the support base against the support base from above; With the pressing means is a pair of swing levers supported to be swingable about swing center lines C a and C b substantially parallel to the rotation center line L 1 , Equipped with a base lifting means for retracting the support base downward after completion of friction welding. Friction welding equipment.

2. The base lifting means is A horizontal movement mechanism that moves in a substantially horizontal direction; A motion direction changing mechanism that converts the horizontal motion of the horizontal motion mechanism into a vertical motion; 2. The friction welding apparatus according to claim 1, comprising:

3. 3. The friction welding device according to claim 2, wherein the motion direction changing mechanism uses a cam.

4. 3. The friction welding apparatus according to claim 2, wherein the motion direction changing mechanism uses a rack and pinion.

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