WO2017135187A1

WO2017135187A1 - Linear friction bonding device and jig position-adjusting device and position-adjusting method

Info

Publication number: WO2017135187A1
Application number: PCT/JP2017/003146
Authority: WO
Inventors: 真裕谷田; 健秋山; 昂史藤田; 望浅野; 百々　泰; 宏明河島; 森田　一郎; 元若林; 中村　賢治
Original assignee: 株式会社Ihi
Priority date: 2016-02-01
Filing date: 2017-01-30
Publication date: 2017-08-10
Also published as: JPWO2017135187A1; JP6583439B2

Abstract

This linear friction bonding device is for bonding, by frictional heat, a blade-side bonding surface of a blade and a disc-side bonding surface of a disc protrusion provided on the outer circumferential surface of a disc. The linear friction bonding device is equipped with a disc holder unit provided to a pressing table, the disc holder unit holding the disc. The disc holder unit has: a unit base supported by the pressing table; a rotating table provided on one side of the unit base in the thickness direction so as to be rotatable about an axial core, the rotating table being such that a disc can be mounted on the rotating table in a concentric manner, the rotating table rotating about the axial core and thereby making it possible to index a disc protrusion at the bonding position at which bonding is to be performed; a rotation actuator for causing the rotating table to rotate about the axial core; and a fixing part for fixing the rotating table to the unit base.

Description

Linear friction welding apparatus, jig position adjusting apparatus and position adjusting method

The present disclosure relates to linear friction welding in which a joint surface of a blade that is a part of a blisk (integral impeller) and a joint surface of a disk protrusion provided on an outer peripheral surface of a disk that is a part of the blisk are joined by frictional heat. Relates to the device. The present disclosure also relates to a method for adjusting the position of a blade jig and a disk jig included in a linear friction welding apparatus.

Conventionally, there is a linear friction welding apparatus used for manufacturing or repairing blisks in which a blade and a disk are integrated (see Patent Document 1).

Generally, a linear friction welding apparatus includes an apparatus main body including a bed and a column provided on the bed. Further, the column includes a vibration table that can move in the vertical direction, which is the vibration direction, on its side surface. The vibration table includes a blade jig (blade holder unit) for holding the blade on the side surface.

The bed has a pressing table at a position separated from the vibration table on the upper surface. The pressing table is movable in the horizontal direction, which is a pressing direction orthogonal to the excitation direction. The pressing table includes a disk jig (disk holder unit) for holding a disk on the upper surface thereof. The disc jig is configured to be indexed to a joining position (predetermined joining position) for joining projections formed in advance on the disc by rotation around the axis of the disc.

Here, when the blade jig holds the blade and the disk jig holds the disk, the disk is rotated around its axis and the protrusion is indexed to a predetermined joining position. The joining surface and the disc-side joining surface of the protrusion can be made to face each other. Then, the pressing table is moved along the pressing direction while the vibrating table is reciprocated along the excitation direction. Then, in a state where the blade is reciprocated along the vibration direction, the disk-side joining surface can be brought close to the blade-side joining surface, and the protrusion can be pressed toward the blade-side joining surface. Further, if frictional heat is generated between the blade side joint surface and the disk side joint surface, the blade side joint surface and the disk side joint surface can be joined.

Japanese Patent Laying-Open No. 2015-108338

Here, when the positions of the blade jig and the disk jig are adjusted, the blade side bonding surface and the disk side bonding surface are opposed to each other, and the disk side bonding surface is brought closer to the blade side bonding surface. Then, the relative position of the disk jig with respect to the blade jig is adjusted on a virtual plane orthogonal to the pressing direction so that the blade side bonding surface and the disk side bonding surface are aligned.

However, since the position adjustment of these jigs is performed based on the blade side joint surface and the disk side joint surface, it is affected by the machining error of the blade side joint surface and the machining error of the disk side joint surface. For this reason, it is difficult to adjust the position of the jig with high accuracy, and there is a limit to improving the bonding accuracy between the blade-side bonding surface and the disk-side bonding surface.

In order to further improve the joining accuracy between the blade-side joining surface and the disk-side joining surface, even if a large frictional force acts between the blade-side joining surface and the disk-side joining surface during joining, It is necessary to maintain the fixed state firmly.

Therefore, the present disclosure aims to provide a linear friction welding apparatus, a jig adjusting apparatus, and an adjusting method that are advantageous in improving the bonding accuracy between the bonding surface of the blade and the bonding surface of the disk protrusion. To do.

A linear friction welding apparatus according to an aspect of the present disclosure is a linear friction welding apparatus that joins a blade-side joint surface of a blade and a disk-side joint surface of a disk protrusion provided on an outer peripheral surface of the disk by frictional heat. The vibration table provided in the apparatus main body and capable of reciprocating in the vibration direction, the blade holder unit provided in the vibration table and holding the blade, and provided at a position separated from the vibration table in the apparatus main body. A pressing table that is movable in a pressing direction orthogonal to the excitation direction, and a disk holder unit that is provided on the pressing table and holds a disk, the disk holder unit being supported by the pressing table; , Provided on one side of the unit base in the thickness direction so as to be rotatable around the axis, allowing the disc to be mounted concentrically, A rotary table that can be indexed to a joining position for joining the disk protrusions by rotating around, a rotary actuator that rotates the rotary table around the axis, and a fixing portion for fixing the rotary table to the unit base; Have

Further, the jig position adjusting method according to one aspect of the present disclosure is included in each of the linear friction welding apparatuses, and includes a blade jig capable of reciprocating along a vibration direction while holding the blade, and a disk. Hold and adjust the position of the disk jig that can move relative to the blade jig along the pressing direction orthogonal to the excitation direction and that can be indexed to the joining position for joining the disk protrusions A master blade having a virtual blade side joint surface corresponding to the blade side joint surface and a pair of blade reference surfaces orthogonal to the virtual blade side joint surface, which is manufactured by simulating the blade , And with the blade jig holding the master blade, adjust the blade so that the joint surface on the virtual blade side and the first blade reference surface are parallel to the excitation direction. A master projection corresponding to the disc projection on the outer peripheral surface, and the master projection on the virtual disc side joining surface corresponding to the disc side joining surface and the virtual disc side joining surface, respectively. A virtual disk having a pair of orthogonal disk reference surfaces, a master disk manufactured by simulating the disk, the disk jig holding the master disk, and the master protrusion being indexed at the joining position A second adjustment step of adjusting the position of the disk jig so that the side joint surface is parallel to the virtual blade side joint surface, the virtual blade side joint surface, the first blade reference surface, and the virtual disk side joint surface. The level difference between the first disk reference surface and the first blade reference surface, and the second disk reference surface As a step amount between the blade reference plane is the step amount set in advance, respectively, including a third adjusting step of performing position adjustment of the relative position of the disk fixture for the blade fixture.

In addition, the jig position adjusting method according to one aspect of the present disclosure includes a blade jig holding the blade and a disk jig holding the disk, which are included in the linear friction welding apparatus, respectively. A master blade having a virtual blade side joint surface and a pair of blade reference surfaces orthogonal to the virtual blade side joint surface, and a master blade manufactured by simulating a blade, and manufactured by simulating a disk A master disk having a master protrusion having an outer peripheral surface provided with a master protrusion having a virtual disk side bonding surface corresponding to the disk side bonding surface and a pair of disk reference surfaces orthogonal to the virtual disk side bonding surface; With the master blade held, the braid so that the virtual blade side joint surface and the first blade reference surface are parallel to the excitation direction of the linear friction welding device. In the first adjustment step for adjusting the position of the jig, the disk jig holding the master disk, and the master protrusion being indexed to the bonding position, the virtual blade side bonding surface and the virtual disk side bonding surface are In a state where the second adjustment step for adjusting the position of the disk jig so as to be parallel, and the virtual blade side joint surface, the first blade reference surface, and the virtual disk side joint surface are held in parallel in the excitation direction. The step amount between the first disk reference surface and the first blade reference surface and the step amount between the second disk reference surface and the second blade reference surface are respectively set to predetermined step amounts. And a third adjustment step for adjusting the relative position between the blade jig and the disk jig.

A jig position adjusting device according to an aspect of the present disclosure is included in each of the linear friction welding devices, and includes a blade jig that holds a blade and can reciprocate along a vibration direction, and a disk. Hold and adjust the position of the disk jig that can move relative to the blade jig along the pressing direction orthogonal to the excitation direction and that can be indexed to the joining position for joining the disk protrusions A master blade including a main body having a first surface held by a blade jig and facing the outer peripheral surface of the disk, a master disk held by the disk jig, and an outer peripheral region of the master disk. A plurality of protrusions that are installed at intervals and have a second surface that can be opposed to the first surface, and are held by the master blade and protrude when the first surface and the second surface are opposed to each other. The position of one surface of the master blade can be measured when the first surface and the second surface are opposed to each other, held by a master blade-side measuring instrument that enables measurement of the position of one surface, or the master disk. And a master block side measuring instrument.

A jig position adjustment method according to an aspect of the present disclosure is a method of adjusting the position of a blade jig and a disk jig using the position adjustment device described above, and includes a master blade side measuring instrument or A preparation process for aligning the origin position of the master block side measuring instrument, a measuring process for measuring the relative position between the blade jig and the disk jig using the master blade measuring instrument or the master block measuring instrument, and a measuring process And an adjustment step of adjusting the relative position of the disk jig with respect to the blade jig so that the obtained measurement value is included in a preset allowable range.

FIG. 1 is a diagram illustrating a first adjustment step in the jig position adjustment method according to the first embodiment of the present disclosure. FIG. 2 is a diagram illustrating a second adjustment step in the jig position adjustment method according to the first embodiment of the present disclosure. FIG. 3 is a diagram illustrating a third adjustment step in the jig position adjustment method according to the first embodiment of the present disclosure. FIG. 4 is a diagram illustrating a third adjustment step in the jig position adjustment method according to the first embodiment of the present disclosure. FIG. 5 is a diagram illustrating a state in which the blade jig in the first embodiment of the present disclosure holds the master blade or the blade. FIG. 6 is a diagram illustrating a state where the disk jig according to the first embodiment of the present disclosure holds the master disk. FIG. 7 is a diagram illustrating a state in which the disc jig according to the first embodiment of the present disclosure holds the disc. FIG. 8 is an enlarged view of the arrow VIII in FIG. FIG. 9 is a front view illustrating the configuration of the linear friction welding apparatus according to the first embodiment of the present disclosure. FIG. 10 is a diagram illustrating a state in which the blade-side joint surface and the disk-side joint surface are joined in the first embodiment of the present disclosure. FIG. 11 is an enlarged view of the arrow XI in FIG. FIG. 12 is a view taken along the line XII-XII in FIG. FIG. 13 is a diagram illustrating a configuration of a master blade and a master block of a master disk according to the second embodiment of the present disclosure. FIG. 14 is a diagram illustrating a state where the disk jig according to the second embodiment of the present disclosure holds the master disk. FIG. 15 is a diagram illustrating a state in which the blade jig in the second embodiment of the present disclosure holds the master blade. FIG. 16 is a diagram illustrating a preparation process in the jig position adjusting method according to the second embodiment of the present disclosure. FIG. 17 is a diagram illustrating a measurement process in the jig position adjusting method according to the second embodiment of the present disclosure. FIG. 18 is a cross-sectional view of a disc holder unit according to the third embodiment of the present disclosure. FIG. 19 is a perspective view of a disc holder unit according to the third embodiment of the present disclosure. FIG. 20 is a circuit diagram of the hydraulic unit. FIG. 21 is a front view illustrating a configuration of a linear friction welding apparatus according to the third embodiment of the present disclosure.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Here, as a linear friction welding apparatus, a linear friction welding apparatus that frictionally bonds a blade constituting a blisk and a disk constituting a blisk will be described as an example. In the drawing, the Z-axis is taken in the vertical direction, the X-axis is taken in the pressing direction described later on the plane perpendicular to the Z-axis, and the Y-axis is taken in the direction perpendicular to the X-axis. Here, “up and down” in the following description indicates the plus side (up) and minus side (down) in the Z direction, and “left and right” means the minus side (left) and the plus side (right) in the X direction. “Front and rear” indicates the negative side (front) and the positive side (rear) in the Y direction.

<First Embodiment>
First, the linear friction welding apparatus according to the first embodiment of the present disclosure and a jig position adjusting method used therefor will be described.

(Configuration of linear friction welding equipment)
The linear friction welding apparatus 1 according to the first embodiment is generated between the blade side bonding surface 3a of the blade 3 and the disk side bonding surface 7a of the protrusion (disk protrusion) 7 provided on the outer peripheral surface of the disk 5. This is an apparatus for joining the blade-side joining surface 3a and the disk-side joining surface 7a using frictional heat.

Here, the blade 3 and the disk 5 are part of a blisk (not shown) used in a gas turbine (not shown). Further, the blade 3 continuously includes a rectangular sandwiched portion (clamped portion) 3b and a rectangular stopper portion 3c on the blade side joint surface 3a side (base side). The stopper portion 3c is positioned closer to the blade side joint surface 3a than the sandwiched portion 3b, and the outer diameter size of the stopper portion 3c is larger than the outer diameter size of the sandwiched portion 3b.

As shown in FIG. 9, the linear friction welding apparatus 1 includes an apparatus main body 9. The apparatus main body 9 has a bed 13 installed on the floor surface F via a plurality of anti-vibration rubbers 11. The bed 13 extends in the left-right direction (one in the horizontal direction). The bed 13 includes a first column 15 on the left side thereof. The first column 15 extends in the vertical direction (up and down direction). The bed 13 includes a second column 17 on the right side thereof. The second column 17 extends in the vertical direction. The first column 15 and the second column 17 are provided to connect the upper frame 19 between the upper portions thereof. The upper frame 19 extends in the left-right direction.

As shown in FIGS. 9, 11 and 12, the first column 15 includes a guide block 21 on the right side surface (right side). The guide block 21 has a guide groove 23 having a T-shaped cross section. The guide groove 23 extends in the vertical direction. The guide block 21 includes a rectangular vibration table 25 in the guide groove 23. The vibration table 25 can reciprocate along the vertical direction which is the vibration direction. In other words, the vibration table 25 is provided on the right side surface of the first column 15 via the guide block 21 so as to be movable along the vibration direction. The vibration table 25 has a convex portion 25a on the right side thereof. The convex portion 25a extends in the excitation direction (vertical direction). Further, the guide block 21 includes a stopper plate 27 on the lower side thereof for preventing the vibration table 25 from being detached from the guide groove 23.

The guide block 21 includes a static pressure support unit 29 that guides the vibration table 25 in the guide groove 23 so as to reciprocate along the vibration direction using the static pressure of the support oil (an example of a support fluid). Prepare. In other words, the vibration table 25 is provided in the guide groove 23 so as to be capable of reciprocating along the vibration direction via the static pressure support unit 29. The static pressure support unit 29 has a plurality of static pressure pads 31 provided in the guide groove 23 at intervals. The plurality of static pressure pads 31 can eject support oil toward the left side surface, the right side surface, the front end surface, and the rear end surface of the vibration table 25 (the vibration table 25 excluding the convex portion 25a). Each static pressure pad 31 is connected to a supply pump (not shown) for supplying support oil.

As shown in FIG. 9, the upper frame 19 includes a hydraulic excitation cylinder 33 as a vibration actuator that reciprocally moves the vibration table 25 along the vibration direction with a predetermined amplitude on the left side. The excitation cylinder 33 has a piston rod 35 that can reciprocate along the excitation direction. The tip of the piston rod 35 is connected to an appropriate position of the vibration table 25 via a coupling 37. Here, the “predetermined amplitude” refers to a set amplitude of ± 10.0 mm or less as an example. As the vibration actuator, an electric vibration cylinder (not shown) or a vibration motor (not shown) may be used instead of the hydraulic vibration cylinder 33.

The vibration table 25 includes a blade jig (blade holder unit) 39 for holding the blade 3 on the right side (right side) of the convex portion 25a.

Here, in FIG. 8, FIG. 8A shows a state in which the sandwiched portion of the blade 3 is sandwiched between the first clamp member 45 and the second clamp member 47. On the other hand, FIG. 8B shows a state where the clamping state between the first clamp member 45 and the second clamp member 47 is released. As shown in FIGS. 5B, 8A, and 8B, the blade jig 39 is a blade jig base (blade holder) provided on the right side surface of the convex portion 25a via a plurality of bolts 41. Unit base) 43. Further, the blade jig base 43 has a block portion 43a from the center portion to the lower portion. The blade jig base 43 has a wall portion 43b at the top thereof. The wall 43b faces the block 43a in the excitation direction.

The blade jig base 43 includes a first clamp member 45 on the upper side of the block portion 43a. Further, the blade jig base 43 has a second clamp member 47 that clamps the clamped portion 3b of the blade 3 in cooperation with the first clamp member 45 between the block portion 43a and the wall portion 43b. Prepare. And the side view shape (shape seen from the direction parallel to the pressing direction perpendicular to the excitation direction) of the clamping surface (clamping surface) 45f of the first clamp member 45 and the clamping surface 47f of the second clamp member 47 is respectively The shape is L-shaped corresponding to the shape of the sandwiched portion 3b. Further, when the clamped portion 3b is set on the clamping surface 45f of the first clamp member 45, the blade side joining surface 3a becomes parallel to the excitation direction. The blade jig base 43 may include a guide member (not shown) that guides the first clamp member 45 along the vibration direction between the block portion 43a and the wall portion 43b.

The blade jig base 43 is a clamp bolt as a clamp application member that applies a clamping force (clamping force) in a direction SD (see FIG. 8) inclined to the vibration direction to the second clamp member 47 on the wall 43b. 49. The clamp bolt 49 is screwed into the wall portion 43b. The tip of the clamp bolt 49 can be pressed and contacted by the clamping force of the clamp bolt 49. Further, the clamp bolt 49 includes a fixing nut 51 for fixing the position of the clamp bolt 49 with respect to the blade jig base 43 at an intermediate portion thereof.

As shown in FIG. 9, the bed 13 includes a pair of guide rails 53 at positions separated from the vibration table 25 on the upper surface in the right direction. The pair of guide rails 53 are separated in the front-rear direction (one in the horizontal direction), and each guide rail 53 extends in the left-right direction. And a pair of guide rail 53 is provided with the press table 55 on those upper sides. In other words, the pressing table 55 is provided via the pair of guide rails 53 at a position spaced in the right direction with respect to the vibration table 25 on the upper surface of the bed 13. Further, the pressing table 55 has a plurality of guided members 57 guided by the corresponding guide rails 53 on the lower surface (lower side) thereof. In other words, the pressing table 55 can move in the pressing direction (left direction) orthogonal to the excitation direction and the opposite direction (right direction) via the pair of guide rails 53 and the plurality of guided members 57.

The pressing table 55 includes a support frame 59 on its upper surface via a plurality of bolts 61 (see FIG. 7). The support frame 59 has an inclined portion 59a inclined with respect to the horizontal direction. And the 2nd column 17 is equipped with the hydraulic press cylinder 63 as a press actuator which moves the press table 55 to a press direction and the opposite direction in the center part. The pressing cylinder 63 has a piston rod 65 that can move in the pressing direction and the opposite direction. The tip (left end) of the piston rod 65 is connected to an appropriate position of the support frame 59 via a coupling 67. As the pressing actuator, an electric pressing cylinder (not shown) or a pressing motor (not shown) may be used instead of the hydraulic pressing cylinder 63.

The support frame 59 includes a disk jig (disk holder unit) 69 for holding the disk 5 on the inclined portion 59a.

7 and 9, the disc jig 69 includes a disc jig base (disc holder unit base) 73 provided on the inclined portion 59a of the support frame 59 via a plurality of bolts 71. As shown in FIG. The disc jig base 73 includes a circular turntable 75 on the upper surface thereof. The rotary table 75 is rotatable around an axis that is inclined with respect to the vertical direction (the axis of the rotary table 75). The rotary table 75 has a chuck mechanism 77 for concentrically attaching the disk 5 to the rotary table 75 at the center (center) thereof. The rotary table 75 can be indexed (positioned) to a predetermined joining position for joining the protrusions 7 by rotation around the axis. In other words, the disk jig 69 can index the protrusion 7 at a predetermined joining position by rotation around the axis of the rotary table 75 (rotation around the axis of the disk 5). Further, when the rotary table 75 indexes the protrusion 7 at a predetermined bonding position, the disk-side bonding surface 7a of the protrusion 7 is parallel to the excitation direction.

The disc jig base 73 is provided with a rotation motor (not shown) as a rotation actuator that rotates the rotary table 75 around its axis at the center thereof. The disk jig base 73 includes a hydraulic fixed cylinder (not shown) as a fixed actuator for fixing the rotary table 75 to the inclined portion 59a of the support frame 59 at an appropriate position.

(Operation of the blade jig 39)
As shown in FIG. 8B, the clamped portion 3b and the clamp surface 45f of the first clamp member 45 and the second clamp in the state where the stopper portion 3c of the blade 3 is abutted against the right side surface of the first clamp member 45. It is set between the clamping surface 47f of the member 47. Thereby, the blade side joint surface 3a is parallel to the excitation direction. And as shown to Fig.8 (a), the clamp bolt 49 is clamp | tightened and the front-end | tip part of the clamp bolt 49 is press-contacted to the 2nd clamp member 47, The 2nd clamp member 47 (1st clamp member 45). And a clamping force along the direction SD is applied to the second clamp member 47). Accordingly, the sandwiched portion 3 b is sandwiched between the sandwiching surface 45 f of the first clamp member 45 and the sandwiching surface 47 f of the second clamp member 47. The blade jig 39 can hold the blade 3 and fix the blade 3 to the vibration table 25 in a state where the blade-side bonding surface 3 a is parallel to the vibration direction.

When removing the blade 3 from the blade jig 39, the clamp bolt 49 is loosened to release the pressure applied by the tip of the clamp bolt 49. Thereby, the clamped state (clamped state) between the first clamp member 45 and the second clamp member 47 is released.

(Operation of the disc jig 69)
As shown in FIG. 7, the disk jig 69 holds the disk 5 by attaching the disk 5 concentrically to the rotary table 75 by a chuck mechanism 77 or the like. Then, the rotary table 75 is rotated around its axis by driving the rotary motor, and the predetermined protrusion 7 is indexed to a predetermined bonding position, so that the disk-side bonding surface 7a of the predetermined protrusion 7 is in the vibration direction. And make them parallel. Further, the rotary table 75 is fixed to the disc jig base 73 by driving the fixed cylinder. Thus, the disk jig 69 can hold the disk 5 and fix the disk 5 to the pressing table 55 in a state where the disk-side joining surface 7 a is parallel to the excitation direction.

(Operation of linear friction welding apparatus 1 as a whole)
As shown in FIGS. 9 and 10, the blade side bonding surface 3 a of the blade 3 held by the blade jig 39 and the disk side bonding surface 7 a of the protrusion 7 of the disk 5 held by the disk jig 69 are obtained. It is made to oppose in the state parallel to the excitation direction. Next, the vibration table 33 is reciprocated along the vibration direction with a predetermined amplitude by driving the vibration cylinder 33. Then, the pressing table 55 is moved along the pressing direction by driving the pressing cylinder 63. Thereby, in a state where the blade 3 is reciprocated along the vibration direction, the disk-side joining surface 7a approaches the blade-side joining surface 3a, and the protrusion 7 has a predetermined pressing load toward the blade-side joining surface 3a. Is pressed. Then, frictional heat is generated between the blade side joining surface 3a and the disk side joining surface 7a, and the blade side joining surface 3a and the disk side joining surface 7a are joined.

After the blade side joining surface 3a and the disk side joining surface 7a are joined, the joined blade 3 is removed from the blade jig 39, and the blade jig 39 holds the other blade 3. Further, the rotary table 75 is rotated around its axis by driving the rotary motor, and the other predetermined protrusions 7 are indexed to the predetermined joining positions. As described above, the blade-side joining surface 3a of the other blade 3 and the disk-side joining surface 7a of the other protrusion 7 are joined. Further, the operation relating to the joining of the blade-side joining surface 3a and the disk-side joining surface 7a is repeated until the blade 3 and the protrusions 7 to be joined disappear.

(Jig position adjustment method)
The jig position adjusting method according to the present embodiment uses a master blade 79 and a master disk 81, and uses two jigs (blade jig 39 and disk jig 69) that are components of the linear friction welding apparatus 1. Adjust the position.

Here, as shown in FIGS. 5A and 5B to FIG. 7, the master disk 81 simulates the blade 3 and is manufactured with higher accuracy than the blade 3. The master blade 79 includes a virtual blade side bonding surface (virtual blade side bonding surface) 79a corresponding to the blade side bonding surface 3a and a pair of blade reference surfaces 79b orthogonal to and orthogonal to the virtual blade side bonding surface 79a. 79c. Further, the master disk 81 is manufactured with higher accuracy than the disk 5 by simulating the disk 5. The master disk 81 has a plurality of master projections 83 (simulated) corresponding to the projections 7 on the outer circumferential surface thereof at intervals in the circumferential direction (the circumferential direction of the outer circumferential surface of the master disk 81). Each master projection 83 includes a virtual disk side bonding surface (virtual disk side bonding surface) 83a corresponding to the disk side bonding surface 7a and a pair of disk reference surfaces that are orthogonal to and orthogonal to the virtual disk side bonding surface 83a. 83b, 83c. If the crossing angle of the pair of blade reference surfaces 79b and 79c and the crossing angle of the pair of disk reference surfaces 83b and 83c are the same, the pair of blade reference surfaces 79b and 79c and the pair of disk reference surfaces 83b and 83c are Each may not be orthogonal.

The jig position adjusting method according to the present embodiment includes the following first adjusting process, second adjusting process, and third adjusting process.

(I) First Adjustment Step As shown in FIG. 5A, the blade jig 39 causes the first clamp member 45 and the second clamp member 47 to cooperate in the same manner as when the blade 3 is sandwiched. The master blade 79 is held. Next, the operator uses the dial gauge 85 having the extendable (displaceable) measuring element 85a to place the tip of the measuring element 85a of the dial gauge 85 on the virtual blade side as shown in FIG. It abuts on the joint surface 79a. Further, the vibration cylinder 33 (see FIG. 9) moves the master blade 79 reciprocally along the vibration direction at a low speed (lower than the vibration speed at the time of joining) together with the vibration table 25. Then, the operator adjusts the position of the blade jig 39 so that the amount of expansion / contraction (displacement) of the measuring element 85a is constant. In other words, the position of the blade jig 39 is adjusted so that the virtual blade side joining surface 79a is parallel to the vibration direction (vertical direction).

Here, “position adjustment” includes, in addition to position adjustment in at least one of the predetermined two-axis directions, inclination adjustment around at least one axis in the predetermined three-axis directions. The “predetermined biaxial direction” means a biaxial direction that includes the excitation direction and excludes the pressing direction, and the “predetermined triaxial direction” includes the excitation direction and the pressing direction. , Which means three orthogonal directions. The position adjustment of the blade jig 39 may be performed by adjusting the position of the blade jig base 43 with respect to the vibration table 25 using a shim (not shown), for example.

After the position adjustment of the blade jig 39 is performed so that the virtual blade side joining surface 79a is parallel to the vibration direction, the operator measures the dial gauge 85 as shown in FIG. The tip of the child 85a is brought into contact with the first blade reference surface 79b. Further, the vibration cylinder 33 reciprocates the master blade 79 along the vibration direction at a low speed together with the vibration table 25. Then, the operator adjusts the position of the blade jig 39 so that the amount of expansion / contraction of the measuring element 85a is constant. In other words, the position of the blade jig 39 is adjusted so that the first blade reference surface 79b is parallel to the excitation direction.

In addition, after adjusting the position of the blade jig 39 so that the first blade reference surface 79b is parallel to the vibration direction, the virtual blade side bonding surface 79a is parallel to the vibration direction. As described above, the position of the blade jig 39 may be adjusted.

(Ii) Second Adjustment Step After the completion of the first adjustment step, as shown in FIG. 6, the disc jig 69 uses the chuck mechanism 77 or the like to place the master disc 81 on the turntable 75 as in the case of attaching the disc 5. Install concentrically. Next, the rotary motor rotates the rotary table 75 around its axis, and any one of the master protrusions 83 is indexed at a predetermined joining position. Further, the pressing cylinder 63 (see FIG. 9) moves the disk jig 69 along the pressing direction together with the pressing table 55, so that the virtual disk side bonding surface 83a of any one of the master projections 83 becomes the virtual blade side bonding surface 79a. To approach.

Next, as shown in FIG. 2, the operator uses a gap gauge 87 to measure the gap between the virtual disk side bonding surface 83a and the virtual blade side bonding surface 79a of any one of the master protrusions 83, and the measurement. Based on the result, an adjustment amount for the disk jig is obtained. Similarly, the operator obtains the adjustment amount for the disk jig while sequentially indexing the other master protrusions 83 to the predetermined joining positions. Then, based on a plurality of adjustment amounts for the disk jig, the operator can change the disk so that the virtual disk side bonding surface 83a of the master projection 83 indexed to a predetermined bonding position is parallel to the virtual blade side bonding surface 79a. The position of the jig 69 is adjusted.

Here, the “adjustment amount for the disk jig” means an adjustment amount of the disk jig 69 for making the virtual disk side joining surface 83a and the virtual blade side joining surface 79a parallel to each other. The position adjustment of the disc jig 69 may be performed by adjusting the position of the support frame 59 with respect to the pressing table 55 or the position of the disc jig base 73 with respect to the support frame 59 using a shim (not shown) or the like ( (See FIG. 6).

Note that the gap between the virtual disk side joining surface 83a and the virtual blade side joining surface 79a may be measured by using a two-dimensional displacement sensor such as a two-dimensional laser displacement sensor instead of the gap gauge 87.

(Iii) Third Adjustment Step As shown in FIGS. 3 and 4, a dedicated step amount measuring tool 89 is used in the third adjustment step. Here, the step amount measuring tool 89 includes a holder 91 having a holder contact surface 91a that can contact the pair of blade reference surfaces 79b and 79c, and a measuring element that is provided at the tip of the holder 91 and that can be expanded and contracted. And a dial gauge 93 having 93a.

After the second adjustment step, the operator contacts the holder contact surface 91a with the first blade reference surface 79b, while the tip of the probe 93a of the dial gauge 93 contacts the first disk reference surface 83b. Make contact. In this state, the operator measures the step amount between the first disk reference surface 83b and the first blade reference surface 79b using the step amount measuring tool 89 (dial gauge 93). Further, the operator brings the holder contact surface 91a into contact with the second blade reference surface 79c, while bringing the tip of the probe 93a of the dial gauge 93 into contact with the second disk reference surface 83c. In this state, the operator measures the step amount between the second disk reference surface 83c and the second blade reference surface 79c using the step amount measuring tool 89. Based on the measurement results, the relative position adjustment amount is obtained. Similarly, the relative position adjustment amount is obtained while sequentially indexing the plurality of other master protrusions 83 to the predetermined joining positions. Then, based on the plurality of step amount adjustment amounts, the relative position of the disc jig 69 with respect to the blade jig 39 is adjusted on a virtual plane orthogonal to the pressing direction. In other words, the position adjustment of the relative position of the disc jig 69 with respect to the blade jig 39 is performed on a virtual plane orthogonal to the pressing direction so that each of the two predetermined step amounts becomes a preset step amount. Is called. The relative position of the disk jig 69 is adjusted in a state where the virtual blade side joining surface 79a, the first blade reference surface 79b, and the virtual disk side joining surface 83a are kept parallel to the excitation direction. Is called.

Here, the “relative position adjustment amount” refers to the step amount between the first disk reference surface 83b and the first blade reference surface 79b, and the second disk reference surface 83c and the second blade reference surface 79c. Is the amount of adjustment of the relative position of the disk jig 69 for minimizing the amount of difference in level. The “predetermined two step amounts” means one step amount between the first disk reference surface 83b and the first blade reference surface 79b of the master projection 83 indexed to the joining position. The other is the level difference between the second disk reference surface 83c and the second blade reference surface 79c of the master projection 83 indexed to the joining position. The relative position of the disk jig 69 may be adjusted by adjusting the position of the blade jig base 43 with respect to the vibration table 25 or the position of the support frame 59 used as the pressing table 55 using, for example, shims. Good (see FIG. 6).

It should be noted that, instead of the dial gauge 93, a level difference between the first disk reference surface 83b and the first blade reference surface 79b may be measured by using a displacement sensor such as a laser displacement sensor.

Next, functions and effects of this embodiment will be described.

According to the jig position adjusting method according to the present embodiment, the position adjustment of the blade jig 39 is performed with reference to the virtual blade side joining surface 79a of the master blade 79 and the pair of blade reference surfaces 79b and 79c. . Further, the position adjustment of the disk jig 69 is performed with reference to the virtual disk side joining surface 83a of the master disk 81 and the pair of disk reference surfaces 83b and 83c. Thereby, since it is not influenced by the machining error of the blade side joining surface 3a and the machining error of the disk side joining surface 7a, the position adjustment of the two

jigs

39 and 69 is performed with high accuracy.

Further, the position adjustment of the disc jig 69 is performed based on a plurality of adjustment amounts for the disc jig obtained while sequentially indexing the plurality of master protrusions 83 to a predetermined joining position. Then, the position adjustment of the relative position of the disk jig 69 with respect to the blade jig 39 is performed based on a plurality of relative position adjustment amounts obtained while sequentially indexing the plurality of master protrusions 83 to a predetermined joining position. Thereby, the indexing error of the protrusion 7 by the disc jig 69 can be compensated.

As described above, according to the present embodiment, it is possible to further improve the joining accuracy between the blade-side joining surface 3a of the blade 3 and the disk-side joining surface 7a of the protrusion 7, and as a result, the blisk quality can be improved. it can. In particular, since the indexing error of the projection 7 caused by the disk jig 69 can be compensated, the above-described effect can be further enhanced.

Instead of enabling the pressing table 55 to move along the pressing direction and the opposite direction, the vibration table 25 may be movable integrally with the first column 15 along the pressing direction and the opposite direction. . Further, instead of using the vertical direction as the excitation direction, for example, the horizontal direction other than the vertical direction may be set as the excitation direction. Moreover, you may change the order of a process suitably, such as implementing a 2nd adjustment process before a 1st adjustment process.

Second Embodiment
Next, a linear friction welding apparatus according to a second embodiment of the present disclosure, and a jig position adjusting apparatus and a position adjusting method used therefor will be described. In the linear friction welding apparatus 1 according to the first embodiment, a blade jig 39 and a disk jig 69 are used by using a master blade 79 and a master disk 81 as position adjusting members and a dial gauge 93 as a measuring instrument. The method of performing the position adjustment with is illustrated. On the other hand, in this embodiment, instead of the master blade 79 or the master disk 81, a master blade or a master disk that includes a measuring instrument that can measure the relative positions of each other is used.

(Configuration of jig position adjustment device)
First, the configuration of the jig position adjusting device in the present embodiment will be described. FIG. 13 is a perspective view showing a master blade 301 and a master block 302 on the master disk side, which are included in the jig position adjusting apparatus 300 in this embodiment. FIG. 14 is a perspective view showing a state where the disk jig 69 holds the master disk 350. Hereinafter, in each figure which concerns on this embodiment, the same code | symbol is attached | subjected to the structure same as the structure of the linear friction welding apparatus 1 which concerns on 1st Embodiment, and description is abbreviate | omitted.

The position adjusting device 300 includes a master blade 301 corresponding to the master blade 79 in the first embodiment. The master blade 301 includes a main body part 310 and a measuring instrument holding part 311 that can be attached to and detached from the main body part 310.

The main body 310 is a rectangular parallelepiped long in the Z direction. The length of the main body 310 in the Z direction is the same as the length of the master blade 79 in the Z direction in the first embodiment. The main body 310 includes a holding portion 310d that allows the blade jig 39 to stably hold the main body 310 by causing the first clamp member 45 and the second clamp member 47 to cooperate with each other. Further, the length in the X direction of the main body 310 includes a length that can support the measuring instrument holding portion 311 in addition to the length in the X direction of the holding portion 310d.

In the main body 310, the surface (first surface) facing the master block 302 is a virtual blade side joint surface 310b corresponding to the virtual blade side joint surface 79a in the first embodiment. Further, the support surface 310a on which the measuring instrument holding unit 311 is supported is a surface that faces the minus side in the Y direction and is orthogonal to the virtual blade side joining surface 310b. The support surface 310a has two rows of screw holes arranged in a row in the Z direction. First, the state in which the measuring instrument holding unit 311 is held with respect to the main body 310 is the following first to third adjustment steps in the jig position adjusting method according to the present embodiment. It is a state. In this state, the measuring instrument holding portion 311 is screwed into three

screw grooves

310h, 310i, and 310j (see FIG. 16A) formed in a line in the main body portion 310 in the Z direction.

On the other hand, the support surface 310a has three

screw grooves

310e, 310f, 310g formed in a row in the Z direction as shown in FIG. 13 on the X direction minus side of the

screw grooves

310h, 310i, 310j. Have. The instrument holder 311 is unscrewed from the state supported by the

screw grooves

310h, 310i, 310j, and is newly screwed in the following preparation step in the jig position adjusting method according to the present embodiment. It can be screwed into the

grooves

310e, 310f, 310g.

The measuring instrument holding | maintenance part 311 contains the 1st board 311a, the 2nd board 311b, and the 3rd board 311c, as shown in FIG.13 (b).

The first plate body 311a has a first side surface in contact with the support surface 310a of the main body part 310 and the second side surface orthogonal to the first side surface in a state where the measuring instrument holding unit 311 is supported by the main body part 310. The side surface contacts the measurement surface 310c (see FIG. 16A) of the main body 310. In particular, the first plate body 311a has three

screw holes

311d, 311e, and 311f penetrating between the first side surface and the third side surface facing the first side surface. When the measuring instrument holding part 311 is supported by the main body part 310, screws are attached through these screw holes 311 d, 311 e, 311 f and screwed into a screw groove 310 e formed in the main body part 310.

The second plate body 311b is parallel to the support surface 310a of the main body 310. The end of the second plate 311b on the minus side in the X direction is connected to the first plate 311a. On the other hand, the X side plus side end of the second plate 311b protrudes toward the master block 302 side. Further, the second plate 311b has a relative position measuring device as a master blade side measuring device (first direction measuring device) at two locations on the positive side and the negative side in the Z direction which are spaced apart from each other at a predetermined interval. Is installed. Among these, the one located on the plus side in the Z direction is referred to as a first relative position measuring device 330 (first measuring device). On the other hand, the one located on the negative side in the Z direction is defined as a second relative position measuring device 331 (second measuring device). Both of these relative

position measuring instruments

330 and 331 are directed from the minus side in the Y direction to the plus side, and the tip on the plus side is the measurement end. Each of these measurement ends can contact a later-described measurement surface 320c, which is one surface of the master block 302, at the time of position measurement.

The third plate body 311c is parallel to the measurement surface 310c of the main body 310. The end on the minus side in the X direction of the third plate 311c is connected to the first plate 311a. On the other hand, the X side plus side edge of the third plate 311c protrudes toward the master block 302 side. The third plate body 311c is provided with a third relative position measuring device 332 as a master block side measuring device (second direction measuring device). The third relative position measuring device 332 faces from the minus side in the Z direction to the plus side, and the tip on the plus side is the measurement end. This measurement end can come into contact with a later-described measurement surface 320d (see FIG. 17), which is one surface of the master block 302, at the time of position measurement.

Further, the position adjusting device 300 includes a master block 302 corresponding to the master protrusion 83 in the first embodiment. The master block 302 includes a main body 320 that is a rectangular parallelepiped that is long in the Z direction, and a protrusion 320a that is connected to the main body 320 so as to protrude toward the main body 310 of the master blade 301 during position measurement. Including.

In the protrusion 320a, the surface (second surface) facing the virtual blade side joint surface 310b in the main body 310 of the master blade 301 is a virtual disk side joint corresponding to the virtual disk side joint surface 83a in the first embodiment. This is the surface 320b. Further, among the surfaces orthogonal to the virtual disk side joining surface 320b, the measurement surface 320c facing the minus side in the Y direction is, as described above, the measurement end of the first relative position measuring device 330 during the position measurement. It faces the measuring end of the second relative position measuring device 331. Further, of the surfaces orthogonal to the virtual disk side joining surface 320b, the measurement surface 320d facing the minus side in the Z direction is, as described above, used as a measurement end of the third relative position measuring device 332 in the position measurement. opposite.

The master block 302 has a master disk side measuring instrument (third direction) whose measurement ends are directed from the plus side in the X direction to the minus side and can protrude from the virtual disk side joining surface 320b to the minus side in the X direction. 4 relative position measuring instruments as measuring instruments). Two of these relative position measuring devices are installed at two locations on the plus side and the minus side in the Z direction, which are spaced apart from each other at regular intervals. Among these, the one positioned on the plus side in the Z direction is referred to as a fourth relative position measuring device 333 (third measuring device) and a fifth relative position measuring device 334 (fourth measuring device). Further, the fourth relative position measuring device 333 and the fifth relative position measuring device 334 are spaced apart from each other at a constant interval in the Y direction. Among these, the fourth relative position measuring device 333 is located on the minus side in the Y direction, and the fifth relative position measuring device 334 is located on the plus side in the Y direction. On the other hand, the relative position measuring devices located on the negative side in the Z direction are a sixth relative position measuring device 335 (fifth measuring device) and a seventh relative position measuring device 336 (sixth measuring device). The position of the sixth relative position measuring device 335 in the Y direction is the same as that of the fourth relative position measuring device 333. Similarly, the position of the seventh relative position measuring device 336 in the Y direction is the same as that of the fifth relative position measuring device 334. Since the four relative position measuring devices 334 to 336 are arranged in the master block 302 as described above, each measuring end is shown in FIG. It is desirable that a part of a certain projecting portion 320a be a notch.

In the present embodiment, each of the relative position measuring devices 330 to 336 is an air-driven contact displacement meter. In this case, the measurement end corresponds to a contact of a contact displacement meter. Note that the relative position measuring devices 330 to 336 are not limited to such contact displacement meters, and for example, displacement sensors such as laser displacement sensors may be employed.

Further, when the relative position measuring devices 330 to 336 are contact displacement meters, the support surface 310a, the virtual blade side bonding surface 310b, and the measurement surface 310c in the main body 310 of the master blade 301 are pre-position measurement and position measurement. At that time, one of the measurement ends comes into contact. In addition, any of the measurement ends abuts on the virtual disk side joining surface 320b, the measurement surface 320c, and the measurement surface 320d in the protrusion 320a of the master block 302 before and during position measurement. Therefore, it is desirable to flatten the surfaces of these surfaces with high accuracy in advance.

The position adjustment apparatus 300 includes a master disk 350 on which a plurality of master blocks 302 are installed as shown in FIG. The master disk 350 is held by the disk jig 69 in the same manner as the master disk 81 in the first embodiment. The master disk 350 is an annular flat plate member, and a plurality of master blocks 302 are installed at intervals in an outer peripheral area on the surface facing the disk jig 69. In the example shown in FIG. 14, four master blocks 302 are installed at 90 ° intervals, similarly to the master protrusion 83 in the first embodiment. When each master block 302 faces the master blade 301, the master disk 350 so that the virtual disk side joining surface 320b faces the virtual blade side joining surface 310b of the master blade 301 along the Z direction. Fixed to. Here, it can be said that the master block 302 faces the master blade 301 is in a state where the master blade 302 is closest to the master blade 301. Each master block 302 is fixed so as to be inclined with respect to the surface of the master disk 350 via a pedestal portion 350 a continuously provided on the surface of the master disk 350. That is, in this case, the inclination angle of the master block 302 with respect to the surface of the master disk 350 matches the inclination angle of the rotary table 75. Further, in a state where each master block 302 is fixed to the master disk 350, each protrusion 320 a of each master block 302 protrudes outside the outer peripheral surface of the master disk 350, that is, in the radial direction.

(Jig position adjustment method)
The jig position adjustment method using the position adjustment apparatus 300 according to the present embodiment includes the following preparation process, measurement process, and adjustment process.

(I) Preparation Step FIG. 15 is a perspective view showing a state where the blade jig 39 in this embodiment holds the master blade 301. FIG. 16 is a perspective view for explaining a preparation step in the jig position adjusting method according to the present embodiment. Among these, FIG. 16A is a diagram for explaining a preparation process of the master blade 301. On the other hand, FIG. 16B is a diagram for explaining the preparation process of the master block 302.

When performing the following adjustment steps using the relative position measuring devices 330 to 336, it is necessary to specify the origin position, that is, the position where the relative position displacement can be regarded as zero for each of the relative position measuring devices 330 to 336. There is. Therefore, in the present embodiment, the origin position is measured for each of the master blade 301 and the master block 302.

First, when adjusting the origin positions of the first relative position measuring device 330 to the third relative position measuring device 332 in the master blade 301, as shown in FIG. 16 (a), the measuring device holding unit 311 has screw grooves 310e, Screwed to 310f and 310g. In this state, each measurement end of the first relative position measuring device 330 and the second relative position measuring device 331 faces the support surface 310 a of the main body 310. And the 1st relative position measuring device 330 and the 2nd relative position measuring device 331 each measure those positions as an origin position by making a measurement end contact support surface 310a. Similarly, in this state, the measurement end of the third relative position measuring instrument 332 faces the measurement surface 310c of the main body 310, so that the measurement end is brought into contact with the measurement surface 310c, and the position is measured as the origin position. To do. When the measurement of all these origin positions is completed, the operator releases the screw fastening of the measuring instrument holder 311 with respect to the

thread grooves

310e, 310f, 310g, and newly sets the measuring instrument holder 311 to the

screw grooves

310h, 310i, 310j. Fasten with screws.

Next, when adjusting the origin positions of the fourth relative position measuring device 333 to the seventh relative position measuring device 336 in the master block 302, the following is performed. First, as shown in FIG. 16B, the virtual blade side joining surface 310b of the master blade 301 is brought into contact with the virtual disk side joining surface 320b. In this state, each measurement end of the fourth relative position measuring device 333 to the seventh relative position measuring device 336 faces the virtual blade side joining surface 310b. Then, each of the fourth relative position measuring device 333 to the seventh relative position measuring device 336 measures these positions as the origin position by bringing the measurement ends into contact with the virtual blade side bonding surface 310b. The origin position is measured for all master blocks 302 arranged on the master disk 350.

(Ii) Measuring Step FIG. 17 is a perspective view for explaining a measuring step in the jig position adjusting method according to the present embodiment. In starting this measurement process, as shown in FIG. 15, the blade jig 39 uses the first clamp member 45 and the second clamp member 47 in cooperation with each other in the same manner as when the blade 3 is sandwiched. The blade 301 is held.

First, the first master block 302 on the master disk 350 is brought close to the master blade 301 held by the blade jig 39. At this time, the virtual blade side bonding surface 310b of the master blade 301 and the virtual disk side bonding surface 320b of the master block 302 are opposed to each other at an interval W as shown in FIG. Next, each of the relative position measuring devices 330 to 336 brings the measurement end into contact with the surface facing it. Specifically, the measurement ends of the first relative position measuring device 330 and the second relative position measuring device 331 are in contact with the measurement surface 320 c of the master block 302. The measurement end of the third relative position measuring instrument 332 contacts the measurement surface 320d of the master block 302. Further, the measurement ends of the fourth relative position measuring device 333 to the seventh relative position measuring device 336 are in contact with the virtual blade side bonding surface 310b of the master blade 301, respectively. Then, each of the relative position measuring devices 330 to 336 measures the position at that time.

The following values can be derived from these measurements. First, the average of the measured values of the first relative position measuring instrument 330 and the second relative position measuring instrument 331 is a value indicating the relative position of the master blade 301 and the master block 302 in the Y direction. The measurement value of the third relative position measuring device 332 is a value indicating the relative position in the Z direction with respect to the master blade 301 and the master block 302. Note that the X direction corresponds to the pressing direction in the linear friction welding apparatus to which the jig position adjusting method according to the present embodiment is applied, and thus is not considered as a relative position measurement target.

Also, the difference between the measured values of the first relative position measuring device 330 and the second relative position measuring device 331 is a value indicating a deviation around the X axis between the master blade 301 and the master block 302. The difference between the measured values of the fourth relative position measuring device 333 and the sixth relative position measuring device 335 is a value indicating the rotation about the Y axis of the master blade 301 and the master block 302. Note that this is the same even if the measurement values of the fifth relative position measuring device 334 and the seventh relative position measuring device 336 are different. Further, the difference between the measured values of the fourth relative position measuring device 333 and the fifth relative position measuring device 334 is a value indicating the rotation around the Z axis of the master blade 301 and the master block 302. This also applies to the difference between the measurement values of the sixth relative position measuring device 335 and the seventh relative position measuring device 336.

Subsequently, relative positions of the other master blocks 302 on the master disk 350 are measured with respect to the master blade 301 as described above.

(Iii) Adjustment Step Each measurement value obtained in the measurement step corresponds to a relative position adjustment amount in the jig position adjustment method according to the first embodiment. In this adjustment step, the relative position of the disk jig 69 with respect to the blade jig 39 is adjusted on a virtual plane orthogonal to the pressing direction so that each measurement value is included in a preset allowable range. Is called.

Next, functions and effects of this embodiment will be described.

According to the jig position adjusting apparatus 300 and the position adjusting method according to the present embodiment, the same effects as those of the jig position adjusting method according to the first embodiment can be obtained.

In the jig position adjusting method according to the first embodiment, the operator performs various measurements in the first to third adjustment steps using a measuring tool such as a dial gauge 93. Further, particularly in the third adjustment step, as shown in FIG. 3 or FIG. 4, the operator measures the amount of step by changing the dial gauge 93 a plurality of times for one master protrusion 83. On the other hand, according to the jig position adjusting apparatus 300 according to the present embodiment, once the operator holds the master blade 301 on the blade jig 39, the jig position adjusting method is performed. No need to put on and take off while Further, the position adjustment device 300 can measure the relative positions of a plurality of locations at one time for one master block 302. Therefore, according to the present embodiment, the relative position between the master blade 301 and the master block 302 can be measured with higher accuracy and in a shorter time.

In the above description, the first relative position measuring device 330 and the second relative position measuring device 331 each have a measuring device holding unit so that the measurement end comes into contact with the measurement surface 320c of the master block 302 from the Y direction minus side. 311 is installed. However, the jig position adjusting device of the present disclosure is not limited to such a configuration. For example, the first relative position measuring device 330 and the second relative position measuring device 331 may be installed such that the measurement end contacts the opposite surface of the measurement surface 320c of the master block 302 from the Y direction plus side. Similarly, in the above description, the third relative position measuring device 332 is installed in the measuring device holding unit 311 so that the measurement end contacts the measurement surface 320d of the master block 302 from the Z direction minus side. However, in the jig position adjusting device of the present disclosure, the third relative position measuring device 332 is not limited to such a configuration, and the third relative position measuring device 332 contacts the opposite surface of the measurement surface 320d of the master block 302 from the Z direction plus side. It may be installed to do.

In the above description, the configuration in which the four relative position measuring devices of the fourth relative position measuring device 333 to the seventh relative position measuring device 336 are installed in the master block 302 is exemplified. However, the jig position adjusting device of the present disclosure is not limited to such a configuration. For example, there may be a configuration in which four relative position measuring devices of the fourth relative position measuring device 333 to the seventh relative position measuring device 336 are installed on the master blade 301. Specifically, these four relative position measuring instruments are connected to the main body 310 of the master blade 301 with the measurement end facing from the minus side to the plus side in the X direction and plus the X direction plus from the virtual blade side joint surface 310b. It is installed so as to protrude to the side. In this case, no relative position measuring device is installed in the master block 302, and the measurement surface 320b is simply a flat surface. Even with such a configuration, the same effects as described above can be obtained.

Further, in the above description, a configuration in which four master blocks 302 having four relative position measuring devices of the fourth relative position measuring device 333 to the seventh relative position measuring device 336 are installed on the surface of the master disk 350 is illustrated. did. However, the jig position adjusting device of the present disclosure is not limited to such a configuration. For example, there may be a configuration in which the thickness of the master disk 350 is increased and four protrusions 320a are installed on the outer peripheral surface of the master disk 350 at 90 ° intervals. Also in this case, the measurement ends of the four relative position measuring instruments of the fourth relative position measuring instrument 333 to the seventh relative position measuring instrument 336 are arranged in each protrusion 320a. It will be incorporated into the master disk 350. Even with such a configuration, the same effects as described above can be obtained.

<Third Embodiment>
Next, a linear friction welding apparatus according to the third embodiment of the present disclosure will be described. Of the constituent elements appearing in the following description, those corresponding to the constituent elements appearing in any of FIGS. 1 to 12 are designated by the reference numerals used in FIGS. The overlapping drawings are omitted.

As shown in FIGS. 10 and 21, the linear friction welding apparatus 201 according to this embodiment includes a blade-side bonding surface 203 a of a blade 203 and a disk-side bonding surface 207 a of a disk protrusion 207 provided on the outer peripheral surface of the disk 205. The blade side joining surface 203a and the disk side joining surface 207a are joined using frictional heat generated between the two.

Here, the blade 203 and the disk 205 are part of a blisk (not shown) used in a gas turbine (not shown). Further, the blade 203 has a rectangular sandwiched portion (clamped portion) 203b and a rectangular stopper portion 203c continuously on the blade side joining surface 203a side (base side). The stopper portion 203c is located closer to the blade-side joint surface 203a than the sandwiched portion 203b, and the outer diameter dimension of the stopper portion 203c is larger than the outer diameter dimension of the sandwiched portion 203b.

As shown in FIG. 21, the linear friction welding apparatus 201 includes an apparatus main body 209. The apparatus main body 209 has a bed 213 installed on the floor surface F via a plurality of vibration isolating rubbers 11. The bed 213 extends in the left-right direction (one in the horizontal direction). The bed 213 includes a first column 215 on the left side thereof. The first column 215 extends in the vertical direction (up and down direction). The bed 213 includes a second column 217 on the right side thereof. The second column 217 extends in the vertical direction. The first column 215 and the second column 217 are provided so as to connect the upper frame 219 between the upper portions thereof. The upper frame 219 extends in the left-right direction.

As shown in FIG. 11, FIG. 12 and FIG. 21, the first column 215 includes a guide block 221 on the right side surface (right side). The guide block 221 has a guide groove 223 having a T-shaped cross section. The guide groove 223 extends in the vertical direction. The guide block 221 includes a rectangular vibration table 225 in the guide groove 223. The vibration table 225 can reciprocate along the vertical direction that is the vibration direction. In other words, the vibration table 225 can reciprocate along the vibration direction on the right side surface of the first column 215 via the guide block 221. The vibration table 225 has a convex portion 225a on the right side thereof. The convex portion 225a extends along the excitation direction (vertical direction). Further, the guide block 221 includes a stopper plate 227 for suppressing the detachment of the vibration table 225 from the guide groove 223 on the lower side thereof.

The guide block 221 has a static pressure support unit 229 that guides the vibration table 225 in the guide groove 223 so as to reciprocate along the vibration direction using the static pressure of the support oil (an example of a support fluid). Prepare. In other words, the vibration table 225 can reciprocate in the guide groove 223 along the vibration direction via the static pressure support unit 229. The static pressure support unit 229 includes a plurality of static pressure pads 231 provided in the guide groove 223 at intervals. The plurality of static pressure pads 231 can eject support oil toward the left side surface, the right side surface, the front end surface, and the rear end surface of the vibration table 225 (the vibration table 225 excluding the convex portion 225a). Each static pressure pad 231 is connected to a support oil pump (not shown) for supplying support oil.

As shown in FIGS. 11 and 21, the upper frame 219 has a hydraulic excitation cylinder 233 as an excitation actuator that reciprocates the excitation table 225 along the excitation direction at a predetermined amplitude on the left side of the upper frame 219. Is provided. The vibration cylinder 233 includes a piston rod 235 that can reciprocate along the vibration direction. The tip of the piston rod 235 is connected to an appropriate position of the vibration table 225 via a coupling 237. Here, the “predetermined amplitude” refers to an amplitude set to ± 10.0 mm or less as an example. As the vibration actuator, instead of the hydraulic vibration cylinder 233, an electric vibration cylinder (not shown) or a vibration motor (not shown) may be used.

The vibration table 225 includes a blade holder unit (blade jig) 239 that holds the blade 203 on the right side surface (right side) of the convex portion 225a.

As shown in FIGS. 8A, 8B, and 11, the blade holder unit 239 is a unit base (jig) provided on the right side surface of the convex portion 225a of the vibration table 225 via a plurality of bolts 241. Base) 243. The unit base 243 has a block portion 243a from the center to the lower portion. The unit base 243 has a wall portion 243b at the top thereof. The wall portion 243b faces the block portion 243a in the excitation direction.

The unit base 243 includes a first clamp member 245 on the upper side of the block portion 243a. The unit base 243 also includes a second clamp member 247 that clamps the clamped portion 203b in cooperation with the first clamp member 245 between the block portion 243a and the wall portion 243b. And the side view shape (shape seen from the direction parallel to the pressing direction orthogonal to the excitation direction) of the clamping surface (clamp surface) 245f of the first clamp member 245 and the clamping surface 247f of the second clamp member 247 is as follows. , Each has an L shape corresponding to the shape of the sandwiched portion 203b. Further, when the clamped portion 203b is set on the clamping surface 245f of the first clamp member 245, the blade side joining surface 203a is made parallel to the excitation direction. The unit base 243 may include a guide member (not shown) that guides the first clamp member 245 along the vibration direction between the block portion 243a and the wall portion 243b.

The unit base 243 includes a clamp bolt 249 as a clamp applying member that applies a clamping force (clamping force) in the direction SD inclined to the second clamping member 247 with respect to the excitation direction on the wall portion 243b. The clamp bolt 249 is screwed into the wall portion 243b. The tip of the clamp bolt 249 can be brought into pressure contact with the clamping force of the clamp bolt 249. Further, the clamp bolt 249 includes a fixing nut 251 for fixing the position of the clamp bolt 249 with respect to the unit base 243 at an intermediate portion thereof.

As shown in FIG. 21, the bed 213 includes a pair of guide rails 253 (only one is shown) at a position separated from the vibration table 225 on the upper surface in the right direction. The pair of guide rails 253 are separated in the front-rear direction (one in the horizontal direction), and each guide rail 253 extends in the left-right direction. And a pair of guide rail 253 is equipped with the press table 255 on those upper sides. In other words, the pressing table 255 is provided via the pair of guide rails 253 at a position separated from the vibration table 225 on the upper surface of the bed 213 in the right direction. Further, the pressing table 255 has a plurality of guided members 257 guided by the corresponding guide rails 253 on the lower surface (lower side) thereof. In other words, the pressing table 255 is movable along the pressing direction (left direction) orthogonal to the excitation direction and the opposite direction (right direction) via the pair of guide rails 253 and the plurality of guided members 257. is there.

The pressing table 255 has a support frame 259 on its upper surface via a plurality of bolts 261 (see FIG. 19). The support frame 259 has an inclined portion 259a that is inclined with respect to the horizontal direction. The second column 217 includes a hydraulic pressing cylinder 263 as a pressing actuator that moves the pressing table 255 along the pressing direction and the opposite direction at the center thereof. The pressing cylinder 263 includes a piston rod 265 that can move along the pressing direction and the opposite direction. The tip (left end) of the piston rod 265 is connected to an appropriate position of the support frame 259 via a coupling 267. Furthermore, the pressing cylinder 263 includes a linear scale (not shown) as a position measuring device that measures the position of the pressing table 255 in the pressing direction at an appropriate position. Note that the tip of the piston rod 265 may be connected to an appropriate position of the pressing table 255 instead of being connected to an appropriate position of the support frame 259. As the pressing actuator, an electric pressing cylinder (not shown), a pressing motor (not shown), or the like may be used instead of the hydraulic pressing cylinder 263.

The support frame 259 includes a disk holder unit (disk jig) 269 that holds the disk 205 on the inclined portion 259a. In other words, the linear friction welding apparatus 201 includes the disk holder unit 269 that can be attached (installable) to the pressing table 255 via the inclined portion 259a of the support frame 259.

Next, a specific configuration of the disc holder unit 269 according to the present embodiment will be described.

18 and 19, the disc holder unit 269 includes an annular unit base (jig base) 273 provided on the inclined portion 259a of the support frame 259 via a plurality of bolts 271. In other words, the disc holder unit 269 includes an annular unit base 273 that can be attached to the pressing table 255 via the inclined portion 259a of the support frame 259. The unit base 273 is configured by stacking three annular base

constituent members

275, 277, and 279. The axis of the unit base 273 is inclined with respect to the vertical direction.

The unit base 273 includes a circular turntable 281 on its upper surface (one side in the thickness direction of the unit base 273). The rotary table 281 is located concentrically with the unit base 273 and is rotatable (rotatable and slidable) around its axis (axis of the rotary table 281). The rotary table 281 has a table shaft 283 at the center (center) thereof. The table shaft 283 is rotatably supported by the unit base 273 via a thrust radial bearing 285. The thrust radial bearing 285 is provided on the unit base 273 and supports the thrust load and radial load of the table shaft 283. Instead of the thrust radial bearing 285, a thrust bearing (not shown) that supports the thrust load of the table shaft 283 and a radial bearing (not shown) that supports the radial load of the table shaft 283 may be used.

The turntable 281 has an annular step 281a on the periphery of the upper surface (one side in the thickness direction of the turntable 281). The disc 205 can be attached to the stepped portion 281 a with a plurality of bolts 287. Further, the rotary table 281 has a chuck mechanism 289 for concentrically attaching the disk 205 to the center (center) of the upper surface thereof. In other words, the rotary table 281 can attach the disk 205 concentrically by the plurality of bolts 287 and the chuck mechanism 289. Further, the chuck mechanism 289 has the same configuration as the chuck mechanism of a machine tool such as a lathe, and a plurality of claw members 291 that can move in the radial direction and a plurality of claw members 291 that synchronize in the radial direction by a rotation operation. And an operation member 293 for moving it. The unit base 273 has passage holes (not shown) for allowing the bolts 287 to pass therethrough when the disc 205 is attached.

The rotary table 281 is configured to be indexable (positionable) to a joining position (predetermined joining position) for joining the disk protrusions 207 by rotation around its axis. In other words, the disc holder unit 269 is configured to be able to index the disc protrusion 207 to a predetermined joining position by rotation around the axis of the disc 205 (rotation around the axis of the rotary table 281). Further, when the rotary table 281 determines the disk protrusion 207 at a predetermined bonding position, the rotating table 281 makes the disk-side bonding surface 207a parallel to the excitation direction.

As shown in FIG. 18, the thickness of the central portion in the radial direction of the turntable 281 is thinner than the thickness of the radially outer portion of the turntable 281. In other words, the rigidity of the central portion in the radial direction of the rotary table 281 is set to be lower than the rigidity of the radially outer portion of the rotary table 281. Further, the rotary table 281 has a ring groove 295 having a T-shaped cross section on the lower side (sliding surface on the unit base 273 side). Lubricating oil or grease is appropriately supplied between the upper surface (sliding surface) of the unit base 273 and the lower surface (sliding surface) of the rotary table 281. A wear-resistant coating (not shown) is applied to the upper surface of the unit base 273 and the lower surface of the rotary table 281.

The unit base 273 includes a rotation motor (direct drive motor) 297 as a rotation actuator that rotates (rotates and slides) the rotation table 281 around its axis (axis of the rotation table 281) at the center thereof. The rotary motor 297 includes a rotor (rotor) 299 that can rotate around its axis. The rotor 299 is integrally connected to the table shaft 283 concentrically (coaxially). Further, the rotary table 281 includes an annular sliding contact member 101 on the outer peripheral surface thereof. The slidable contact member 101 can slidably contact the outer peripheral surface of the unit base 273.

The unit base 273 includes a plurality of hydraulic fixed cylinders 103 as fixing portions for fixing the rotary table 281 to the unit base 273 at appropriate positions. The plurality of fixed cylinders 103 are arranged at intervals along a circumferential direction (predetermined circumferential direction) concentric with the unit base 273 (the rotary table 281).

The fixed cylinder 103 has a cylinder chamber 105 provided inside the unit base 273. The cylinder chamber 105 receives pressure of hydraulic oil (an example of a working fluid). The cylinder chamber 105 includes a piston 107 inside thereof. The piston 107 is movable along the thickness direction of the unit base 273 (the axial center direction of the unit base 273). The piston 107 includes a pressing rod 109 on the upper side. The base of the pressing rod 109 is fixed to the piston 107. Further, the pressing rod 109 is inserted into the insertion hole 111 formed in the unit base 273 and is fitted in the ring groove 295. The pressing rod 109 can press the wall surface 295f of the ring groove 295 toward the unit base 273 (downward).

In the present embodiment, the cross-sectional area of the cylinder chamber 105 of the fixed cylinder 103 located on the predetermined joining position side (left side) is larger than the cross-sectional area of the cylinder chambers 105 of the other fixed cylinders 103.

The unit base 273 includes a first hydraulic oil port 113 for supplying or discharging hydraulic oil to / from the pressing rod 109 side in each cylinder chamber 105 at an appropriate location on the outer peripheral surface thereof. The first hydraulic oil port 113 communicates with the pressure rod 109 side in each cylinder chamber 105 via a first communication passage (not shown) formed inside the unit base 273. Further, the unit base 273 includes a second hydraulic oil port 115 for supplying or discharging hydraulic oil to / from an opposite side of the outer peripheral surface of the unit base 273 to the side opposite to the pressing rod 109 in each cylinder chamber 105. The second hydraulic oil port 115 communicates with the opposite side of each cylinder chamber 105 on the side of the pressing rod 109 via a second communication passage (not shown) formed inside the unit base 273.

As shown in FIG. 20 (a), the first hydraulic oil port 113 and the second hydraulic oil port 115 are connected to a hydraulic unit 117 that transports hydraulic oil (supply operation and carry-out operation).

The first hydraulic oil port 113 is connected to one end of the hydraulic circuit 119, and the other end of the hydraulic circuit 119 is connected to the A port of the first directional control valve 121. The P port of the first directional control valve 121 is connected to one end of a hydraulic circuit 123, and the other end of the hydraulic circuit 123 is connected to a pump 125 (a discharge side of the pump 125) that supplies hydraulic oil to each cylinder chamber 105. It is connected. The pump 125 (the suction side of the pump 125) is connected to a tank 127 that stores hydraulic oil. The second hydraulic oil port 115 is connected to one end of the hydraulic circuit 129, and the other end of the hydraulic circuit 129 is connected to the B port of the first directional control valve 121. The T port of the first direction control valve 121 is connected to one end of the hydraulic circuit 131, and the other end of the hydraulic circuit 131 is connected to the tank 127. The hydraulic circuit 123 includes a first pressure reducing valve (an example of a first pressure control valve) 133 at an intermediate portion (between one end and the other end). The first pressure reducing valve 133 sets the pressure of the hydraulic oil applied to the pressure rod 109 side in each cylinder chamber 105 to be low. Instead of the first pressure reducing valve 133, a first relief valve (not shown) may be disposed in the middle portion of the hydraulic circuit 123 as an example of the first pressure control valve.

The intermediate part of the hydraulic circuit 119 is connected to one end of the hydraulic circuit 135, and the other end of the hydraulic circuit 135 is connected to the A port of the second directional control valve 137. The P port in the second directional control valve 137 is connected to one end of the hydraulic circuit 139, and the other end of the hydraulic circuit 139 is connected between the pump 125 and the first pressure reducing valve 133 in the hydraulic circuit 123. The intermediate portion of the hydraulic circuit 129 is connected to one end of the hydraulic circuit 141, and the other end of the hydraulic circuit 141 is connected to the B port of the second direction control valve 137. The T port of the second direction control valve 137 is connected to one end of the hydraulic circuit 143, and the other end of the hydraulic circuit 143 is connected to an intermediate portion of the hydraulic circuit 131. The hydraulic circuit 139 includes a second pressure reducing valve (an example of a second pressure control valve) 145 at an intermediate portion thereof. The second pressure reducing valve 145 sets the pressure of hydraulic oil applied to the pressure rod 109 side in each cylinder chamber 105 to be high. Instead of the second pressure reducing valve 145, a second relief valve (not shown) may be disposed in the middle portion of the hydraulic circuit 139 as an example of the second pressure control valve.

Here, consider a case where the P-port and the A-port are communicated from the neutral state (the state shown in FIG. 20A) of the first directional control valve 121 while the pump 125 is being driven. According to this operation, since the hydraulic oil is supplied to the first hydraulic oil port 113 as indicated by the white arrow in FIG. 20A, the first hydraulic oil port 113 is connected to the first pressure reducing valve 133. It is possible to apply a low hydraulic oil pressure to the pressure rod 109 side in each cylinder chamber 105. Further, consider the case where the P-port and the A-port are communicated from the neutral state (the state shown in FIG. 20A) of the second directional control valve 137. According to this operation, the hydraulic oil is supplied to the first hydraulic oil port 113 as indicated by the black arrow in FIG. 20A, and therefore the first hydraulic oil port 113 has the second pressure reducing valve 145 turned on. By using this, high hydraulic oil pressure can be applied to the pressure rod 109 side in each cylinder chamber 105. In other words, the disk holder unit 269 increases the pressure of the hydraulic oil applied to the pressure rod 109 side in each cylinder chamber 105 in a stepwise manner. When the pump 125 is driven, at least one of the first direction control valve 121 and the second direction control valve 137 is allowed to communicate with the P port and the B port from the neutral state as follows. It is. That is, as indicated by the hatched arrows in FIG. 20A, the second hydraulic oil port 115 is supplied with hydraulic oil and can apply the pressure of the hydraulic oil to the opposite side of each cylinder chamber 105 to the pressing rod 109 side. .

The first hydraulic oil port 113 and the second hydraulic oil port 115 may be connected to another hydraulic unit 147 that transports hydraulic oil, as shown in FIG. 20B, instead of the hydraulic unit 117.

The first hydraulic oil port 113 is connected to one end of the hydraulic circuit 149, and the other end of the hydraulic circuit 149 is connected to the A port of the direction control valve 151. The P port of the directional control valve 151 is connected to one end of the hydraulic circuit 153, and the other end of the hydraulic circuit 153 is connected to a pump 155 (the discharge side of the pump 155) that supplies hydraulic oil to each cylinder chamber 105. ing. The pump 155 (the suction side of the pump 155) is connected to a tank 157 that stores hydraulic oil. The second hydraulic oil port 115 is connected to one end of the hydraulic circuit 159, and the other end of the hydraulic circuit 159 is connected to the B port of the direction control valve 151. The T port of the direction control valve 151 is connected to one end of the hydraulic circuit 161, and the other end of the hydraulic circuit 161 is connected to the tank 157. Further, an intermediate portion of the hydraulic circuit 153 is connected to one end of the hydraulic circuit 163, and the other end of the hydraulic circuit 163 is connected to the tank 157. The hydraulic circuit 163 includes an electromagnetic proportional relief valve (an example of an electromagnetic proportional valve) 165 at an intermediate portion thereof. The electromagnetic proportional relief valve 165 can vary the pressure of the hydraulic oil applied to the pressure rod 109 side in each cylinder chamber 105. Instead of the electromagnetic proportional relief valve 165, an electromagnetic proportional pressure reducing valve (not shown) may be disposed in the intermediate portion of the hydraulic circuit 163 as an example of the electromagnetic proportional valve.

Here, let us consider a case where the directional control valve 151 is made to communicate with the P port and the A port from the neutral state (the state shown in FIG. 20B) while the pump 155 is driven. According to this operation, the hydraulic oil is supplied to the first hydraulic oil port 113 as indicated by the white arrow in FIG. 20B, so that the first hydraulic oil port 113 is pressed in each cylinder chamber 105. The hydraulic oil pressure can be applied to the rod 109 side. The electromagnetic proportional relief valve 165 can gradually increase the pressure of the hydraulic oil applied to the pressure rod 109 side in each cylinder chamber 105 by appropriately changing the degree of opening. In other words, the disk holder unit 69 gradually increases the pressure of the hydraulic oil applied to the pressure rod 109 side in each cylinder chamber 105. When the directional control valve 151 is made to communicate from the neutral state while the pump 155 is being driven, the P port and the B port are communicated as follows. That is, as indicated by the hatched arrows in FIG. 20B, the second hydraulic oil port 115 is supplied with hydraulic oil and applies the hydraulic oil pressure to the opposite side of each cylinder chamber 105 to the pressing rod 109 side. be able to.

Next, functions (effects related to the blade holder unit 239, actions related to the disc holder unit 269, and actions related to the entire linear friction welding apparatus 201) and effects of the present embodiment will be described.

(Operation related to the blade holder unit 239)
In the state where the stopper portion 203c is abutted against the right side surface of the first clamp member 245 and the right side surface of the second clamp member 247, the operator holds the sandwiched portion 203b with the clamping surface 245f of the first clamp member 245 and the second clamping surface 245f. It is set between the clamping surface 247f of the clamp member 247. Thereby, the blade side joint surface 203a can be made parallel to the excitation direction. Then, the clamp bolt 249 is tightened, and the tip of the clamp bolt 249 is brought into pressure contact with the second clamp member 247, whereby the second clamp member 247 (the first clamp member 245 and the second clamp member 247) has a direction. SD clamping force is applied. Accordingly, the sandwiched portion 3b can be sandwiched between the sandwiching surface 245f of the first clamp member 245 and the sandwiching surface 247f of the second clamp member 247. Thereby, the blade holder unit 239 can hold the blade 203 in a state where the blade side joint surface 203a is parallel to the vibration direction and can be fixed to the vibration table 225.

When removing the blade 203 from the blade holder unit 239, the clamp bolt 249 is loosened to release the pressure applied by the tip of the clamp bolt 249. Thereby, the clamping state (clamp state) by the 1st clamp member 245 and the 2nd clamp member 247 can be cancelled | released.

(Operation related to the disc holder unit 269)
The disk holder unit 269 holds the disk 205 by attaching the disk 205 to the rotary table 281 concentrically by a plurality of bolts 287 and a chuck mechanism 289. Next, the rotation motor 297 rotates (rotates and slides) the rotary table 281 about its axis while applying hydraulic oil pressure to the opposite side of each cylinder chamber 105 to the pressing rod 109 side. Then, the disk 205 is rotated around its axis, and the disk protrusion 207 is indexed to a predetermined joining position. Next, the pressure state of the hydraulic oil on the side opposite to the pressing rod 109 in each cylinder chamber 105 is released, and the hydraulic oil pressure is applied to the pressing rod 109 side in each cylinder chamber 105. Each pressing rod 109 presses the wall surface 295f of the ring groove 295 toward the unit base 273 side using the pressure of the hydraulic oil. Thus, the plurality of fixed cylinders 103 can firmly fix the rotary table 281 to the unit base 273 in a state where the disk protrusion 207 is indexed at a predetermined joining position. In other words, the disk 205 can be firmly fixed to the pressing table 255 in a state where the disk protrusion 207 is indexed at a predetermined joining position.

Here, as described above, the disk holder unit 269 is configured to increase the pressure of the hydraulic oil applied to the pressure rod 109 side in each cylinder chamber 105 stepwise or gradually. As a result, when the rotary table 281 is fixed to the unit base 273, it is possible to suppress the displacement (fine movement) of the disk protrusion 207 indexed to the predetermined joining position by suppressing the positional deviation of the rotary table 281.

As described above, the rigidity of the central portion of the rotary table 281 in the radial direction is lower than the rigidity of the outer portion of the rotary table 281 in the radial direction. As a result, during the rotation of the rotary table 281, local deflection occurs in the rotary table 281, and sliding between the upper surface (sliding surface) of the unit base 273 and the lower surface (sliding surface) of the rotary table 281. Resistance can be reduced.

(Operation related to the entire linear friction welding apparatus 201)
The blade side bonding surface 203a of the blade 203 held by the blade holder unit 239 and the disk side bonding surface 207a of the disk 205 held by the disk holder unit 269 are opposed to each other in a state parallel to the excitation direction. Next, the vibration table 225 reciprocates along the vibration direction with a predetermined amplitude by driving the vibration cylinder 233. Further, the pressure table 255 is moved in the pressing direction by driving the pressing cylinder 263 while measuring the position of the pressing table 255 in the pressing direction with the linear scale. Then, the disk protrusion 207 can be pressed to the joining surface 203a side of the blade 203 with a predetermined pressing load in a state where the blade 203 is reciprocated in the vibration direction. When the amount of movement of the pressing table 255 from the origin position becomes the same as the target front shift amount set smaller than the target shift amount, the drive of the vibration cylinder 233 is stopped. Further, the pressing table 255 is moved in the pressing direction until the amount of movement of the pressing table 255 from the origin position is the same as the target shift amount. Then, with the blade 203 stopped, the disk protrusion 207 can be pressed to the joining surface 203a side of the blade 203 with a predetermined pressing load. As a result, frictional heat is generated between the joint surface 203a of the blade 203 and the joint surface 207a of the disk protrusion 207, and the joint surface 203a of the blade 203 and the joint surface 207a of the disk protrusion 207 are installed and joined. it can.

Here, the “origin position of the pressing table 255” refers to the position in the pressing direction of the pressing table 255 at the timing when the bonding surface 207a of the disk protrusion 207 is brought into contact with the bonding surface 203a of the blade 203. The “target shift amount” refers to a shift amount (displacement amount) between the blade 203 and the disk protrusion 207 for bonding the bonding surface 203 a of the blade 203 and the bonding surface 207 a of the disk protrusion 207.

After joining the joint surface 203 a of the blade 203 and the joint surface 207 a of the disk protrusion 207, the joined blade 203 is removed from the blade holder unit 239, and another blade 203 is held by the blade holder unit 239. Further, the rotary table 281 is rotated around its axis by driving the rotary motor 297, and the other predetermined disk protrusions 207 are indexed to the predetermined joining positions. Then, as described above, the joint surface 203a of the other blade 203 and the joint surface 207a of the other disk protrusion 207 are joined. Further, the operation relating to the joining of the joining surface 203a of the blade 203 and the joining surface 207a of the disk protrusion 207 is repeated until the blade 203 and the disk protrusion 207 to be joined disappear.

Note that the sandwiched portion 203b and the stopper portion 203c of the joined blade 203 and the joined disc protrusion 207 are finished into a product shape as part of a blisk by machining in a subsequent process.

Therefore, according to the embodiment of the present invention, as described above, the rotary table 281 can be firmly fixed to the unit base 273 in a state where the disk protrusion 207 is indexed at a predetermined joining position. Therefore, even when a large frictional force is applied between the joint surface 203a of the blade 203 and the joint surface 207a of the disk protrusion 207 during joining, the fixed state of the disk 205 with respect to the unit base 273, in other words, the pressing table 255 is strengthened. Can be maintained. Therefore, according to this embodiment, it is possible to further improve the joining accuracy between the joining surface 203a of the blade 203 and the joining surface 207a of the disk protrusion 207. In particular, when the rotary table 281 is fixed to the unit base 273, it is possible to prevent the displacement of the disk protrusion 207 indexed to a predetermined bonding position, so that the bonding surface 203a of the blade 203 and the bonding surface 207a of the disk protrusion 207 are not affected. The joining accuracy can be further increased.

Since the sliding resistance between the upper surface of the unit base 273 and the lower surface of the rotary table 281 can be reduced, the wear of the upper surface of the unit base 273 and the lower surface of the rotary table 281 is suppressed, and the durability of the disc holder unit 269 is improved. Can do.

In addition, instead of making the pressing table 255 movable in the pressing direction and the opposite direction, the vibration table 225 may be movable integrally with the first column 215 in the pressing direction and the opposite direction. Instead of using the vertical direction as the excitation direction, for example, a horizontal direction other than the vertical direction may be used as the excitation direction.

Thus, it is needless to say that the present disclosure includes various embodiments that are not described herein. Therefore, the technical scope of the present disclosure is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

Claims

A linear friction welding apparatus that joins a blade side joint surface of a blade and a disk side joint surface of a disk protrusion provided on an outer peripheral surface of the disk by frictional heat,
An excitation table provided in the apparatus main body and reciprocally movable in the excitation direction;
A blade holder unit that is provided on the vibration table and holds the blade;
A pressing table provided at a position separated from the excitation table in the apparatus main body and movable in a pressing direction orthogonal to the excitation direction;
A disc holder unit that is provided on the pressing table and holds the disc;
With
The disk holder unit is a unit base supported by the pressing table;
Provided on one side of the unit base in the thickness direction so as to be rotatable around an axis, allowing the disk to be mounted concentrically, and indexing to a joining position for joining the disk protrusions by rotation around the axis A rotating table,
A rotary actuator for rotating the rotary table about the axis;
A fixing portion for fixing the rotary table to the unit base;
A linear friction welding apparatus.
The rotary table has a ring groove with a T-shaped cross section on the unit base side,
The fixing part is
A cylinder chamber provided inside the unit base and receiving the pressure of the working fluid;
A piston provided inside the cylinder chamber so as to be movable in the thickness direction;
A base rod fixed to the piston, fitted into the ring groove of the rotary table, and a pressing rod capable of pressing the wall surface of the ring groove toward the unit base;
The linear friction welding apparatus according to claim 1, comprising:
The linear friction welding apparatus according to claim 2, wherein the plurality of fixing portions are arranged at intervals along a circumferential direction.
The linear friction welding apparatus according to claim 2 or 3, wherein the pressure of the working fluid applied to the pressure rod side in the cylinder chamber is increased stepwise or gradually.
The linear friction welding apparatus according to any one of claims 1 to 4, wherein a rigidity of a central portion in a radial direction of the rotary table is lower than a rigidity of a radial outer portion of the rotary table.
A blade jig that is included in each of the linear friction welding apparatuses according to any one of claims 1 to 5, and that holds the blade and can reciprocate along an excitation direction, and holds the disk. The position of the disk jig that can move relative to the blade jig along the pressing direction orthogonal to the excitation direction and that can be indexed to the joining position for joining the disk protrusions. A method of adjusting,
A virtual blade side joint surface corresponding to the blade side joint surface, and a pair of blade reference surfaces orthogonal to the virtual blade side joint surface, respectively, using a master blade manufactured by simulating the blade, With the blade jig holding the master blade, adjust the position of the blade jig so that the virtual blade side joint surface and the first blade reference surface are parallel to the excitation direction. A first adjustment step to be performed;
A master protrusion corresponding to the disk protrusion is provided on the outer peripheral surface, and the master protrusion has a virtual disk side bonding surface corresponding to the disk side bonding surface, and a pair of disk reference surfaces orthogonal to the virtual disk side bonding surface, respectively. Using the master disk manufactured by simulating the disk, the disk jig holding the master disk, and the master protrusion is indexed to the joining position, the virtual disk side joining A second adjustment step of adjusting the position of the disk jig so that the surface is parallel to the virtual blade side joining surface;
In a state where the virtual blade side joint surface, the first blade reference surface, and the virtual disk side joint surface are kept parallel to the excitation direction, the first disk reference surface and the first disk reference surface The amount of step difference from the blade reference surface and the amount of step difference between the second disk reference surface and the second blade reference surface are set to predetermined step amounts, respectively. A third adjustment step for adjusting the relative position of the tool;
A method for adjusting the position of a jig.
In the first adjustment step, a dial gauge having an extendable measuring element is used,
When the master blade is moved along the excitation direction in a state where the tip of the probe is in contact with the virtual blade side joint surface, and
When the master blade is moved along the excitation direction in a state where the tip of the measuring element is in contact with the first blade reference surface,
The jig position adjusting method according to claim 6, wherein the position adjustment of the blade jig is performed so that the amount of expansion and contraction of the probe is constant.
In the second adjustment step, the virtual disk side joint surface and the virtual blade side are determined in a state where the master protrusion is indexed to the joint position and the virtual disk side joint surface is brought close to the virtual blade side joint surface. The jig according to claim 6 or 7, wherein a position of the blade jig is adjusted so that the virtual disk side joint surface is parallel to the virtual blade side joint surface while measuring a gap with the joint surface. Tool position adjustment method.
A plurality of the master protrusions are provided on the outer peripheral surface of the master disk at intervals in the circumferential direction.
In the second adjusting step, while sequentially indexing the plurality of master protrusions to the joining position, an adjustment amount for the disk jig for making the virtual disk side joining surface parallel to the virtual blade side joining surface is obtained, Based on a plurality of adjustment amounts for the disk jig, the position adjustment of the disk jig is performed so that the virtual disk side bonding surface of the master projection indexed to the bonding position is parallel to the virtual blade side bonding surface. And
In the third adjustment step, the step amount between the first disk reference surface and the first blade reference surface and the second disk reference surface are calculated while sequentially indexing the plurality of master protrusions to the joining positions. And calculating the relative position adjustment amount for making the step amount between the second blade reference surface and the second blade reference surface a predetermined step amount, and calculating the relative position adjustment amount based on the plurality of relative position adjustment amounts. Further, a step amount between the first disk reference surface and the first blade reference surface of the master protrusion, and the second disk reference surface and the second blade of the master protrusion determined at the joining position. Adjusting the position of the relative position of the disk jig with respect to the blade jig so that the level difference with the reference surface is a preset level difference respectively.
The jig position adjusting method according to any one of claims 6 to 8.
It is a position adjustment method of the blade jig | tool which hold | maintains the said blade, and the disk jig | tool holding the said disk respectively included in the linear friction welding apparatus of any one of Claim 1-5, ,
A master blade having a virtual blade-side joint surface and a pair of blade reference surfaces orthogonal to the virtual blade-side joint surface, manufactured by simulating the blade, and manufactured by simulating the disk, the disk side Using a master disk provided with a master protrusion having an outer peripheral surface having a virtual disk side bonding surface corresponding to the bonding surface and a pair of disk reference surfaces orthogonal to the virtual disk side bonding surface,
In a state where the blade jig holds the master blade, the virtual blade side joining surface and the first blade reference surface are parallel to the excitation direction of the linear friction welding apparatus. A first adjustment step for adjusting the position;
In the state in which the disk jig holds the master disk and the master protrusion is indexed to the bonding position, the virtual blade side bonding surface and the virtual disk side bonding surface are parallel to each other. A second adjustment step for adjusting the position of the jig;
In a state where the virtual blade side joint surface, the first blade reference surface, and the virtual disk side joint surface are held in parallel in the excitation direction, the first disk reference surface and the first blade reference surface And the relative positions of the blade jig and the disk jig so that the step amount between the second disk reference surface and the second blade reference surface is a predetermined step amount. A third adjustment step for adjusting;
A method for adjusting the position of a jig.
A blade jig that is included in each of the linear friction welding apparatuses according to any one of claims 1 to 5, and that holds the blade and can reciprocate along an excitation direction, and holds the disk. The position of the disk jig that can move relative to the blade jig along the pressing direction orthogonal to the excitation direction and that can be indexed to the joining position for joining the disk protrusions. A device for adjusting,
A master blade including a main body portion held by the blade jig and having a first surface facing the outer peripheral surface of the disk;
A master disk held by the disk jig;
A plurality of protrusions each having a second surface that is installed at an interval in the outer peripheral region of the master disk and that can face the first surface;
When held by the master blade and when the first surface and the second surface face each other, the master blade-side measuring instrument that enables measurement of the position of one surface of the protruding portion or the master disk holds A master block-side measuring instrument that enables measurement of the position of one surface of the master blade when the first surface and the second surface are opposed to each other;
A jig position adjusting device.
The jig position adjusting device according to claim 11, wherein the master blade side measuring device or the master block side measuring device is a contact displacement meter.
The master blade side measuring instrument is
A first direction measuring instrument having a measurement surface as one surface connected perpendicularly to the second surface;
A measuring instrument for a second direction in which the other surface connected perpendicularly to both the second surface and the one surface is a measurement surface;
The jig position adjusting device according to claim 11 or 12, comprising:
14. The jig position adjusting device according to claim 13, wherein the first direction measuring device further includes a first measuring device and a second measuring device having a position separated from each other on the measurement surface as a measurement position.
The master disk side measuring instrument is
The jig position adjusting device according to any one of claims 11 to 14, further comprising a third direction measuring instrument having the first surface as a measurement surface.
The master blade side measuring instrument is
The jig position adjusting device according to any one of claims 11 to 14, further comprising a third direction measuring instrument having the second surface as a measurement surface.
The measuring instrument for the third direction is
A third measuring instrument and a fourth measuring instrument whose measurement positions are positions separated from each other in one direction on the measurement surface;
A fifth measuring instrument and a sixth measuring instrument having measurement positions on the measurement surface and positions separated from each other in the other direction with respect to the third measuring instrument and the fourth measuring instrument;
The jig position adjusting device according to claim 15 or 16, comprising:
A method for adjusting the position of a blade jig and a disk jig using the jig position adjusting device according to any one of claims 11 to 17,
A preparation step of aligning the origin position of the master blade side measuring device or the master block side measuring device;
Using the master blade side measuring instrument or the master block side measuring instrument, a measuring step of measuring a relative position between the blade jig and the disk jig,
An adjustment step for adjusting the relative position of the disk jig with respect to the blade jig so that the measurement value obtained in the measurement step is included in a preset allowable range;
A method for adjusting the position of a jig.