JP6255956B2 - Jig unit for linear friction welding device of integrated impeller - Google Patents

Description

  The present invention relates to a linear friction welding apparatus used for manufacturing an integrated impeller (blisk) of a compressor and a turbine, and in particular, when a new integrated impeller is manufactured by linearly frictionally joining a blade to a circumferential surface of a disk. The present invention relates to a jig unit used when repairing an integrated impeller by adding a repair blade to a missing blade.

  In recent years, in the field of aircraft engines, an integrated impeller (blisk) is used as a rotor of a compressor or a turbine in order to improve mechanical strength and lightness. An integrated impeller is an integrated structure of a disk and a blade.

  An integral impeller is usually formed by cutting out from a material. However, the utilization efficiency of the material is poor, such as a large amount of chips. Therefore, it is desired to improve the utilization efficiency of the material by integrating the disc and the blade formed separately by linear friction bonding.

  In the past, the present applicant has also proposed that the linear friction welding of the blades in the integrated impeller is employed when repairing a partially missing blade. In the repair method according to this proposal, the wing to be repaired is cut at the root side of the defect portion to remove the defect portion. Then, a wing piece for repair is linearly friction bonded to the cut section of the wing (for example, Patent Document 1).

  Therefore, when newly building an integrated impeller, the blades are linearly friction-joined to the peripheral surface of the disk in a procedure similar to that for repair.

JP 2012-17720 A

  When building or repairing an integrated impeller by linear friction welding as described above, the wing side portion together with the jig is moved to the disk while the disk side portion to be joined is brought closer to the radial direction of the disk to the wing side portion clamped by the jig. The side part is reciprocated in the direction of the chord of the wing.

  In particular, when constructing a new integrated impeller, it is necessary to friction-join all the blades one by one on the peripheral surface of the disk, so that the number of times of friction joining reaches a considerable number. Therefore, it is desired to automate the friction welding by sequentially supplying the blade side portions to the respective joint portions of the disk side portion and reciprocating the disk side portion in the chord direction.

  When automating friction welding, a jig that clamps the blade side part and reciprocates in the chord direction is indispensable. The jig needs not to interfere with the blade already frictionally bonded to the peripheral surface of the disk when the blade side portion is clamped and unclamped or when the blade is reciprocated with respect to the disk side portion.

  The present invention has been made in view of the above circumstances, and the object of the present invention is suitable for use in automating the joining of an integrated impeller, and is suitable for clamping and unclamping of a blade side portion or a clamped blade side portion. To provide a jig unit for a linear friction welding apparatus for an integrated impeller that can prevent interference with surrounding members when reciprocating a disk in a chord direction with respect to a disk side portion It is in.

In order to achieve the above object, a jig unit for a linear friction welding apparatus for an integrated impeller of the present invention according to claim 1 is provided.
In an integrated impeller in which a disk and a blade are integrated, at least a blade side portion excluding the disk side portion including the disk is reciprocated in the chord direction of the blade side portion and linearly joined to the disk side portion. Used in a linear friction welding apparatus, the blade side part is reciprocated in the chord direction with the blade side part clamped, and the load in the blade length direction applied to the blade side part from the disk side part is applied to the blade side part. A jig unit received from
A pair of gripping blocks for clamping and unclamping the holding part of the wing side part;
An unclamped state in which the two gripping blocks are spaced apart in the chord direction and unclamp the holding portion with dimensions exceeding the outer shape of the blade side portion in the chord direction, and the two gripping blocks approach in the chord direction A clamping operation drive source for relatively moving the pair of gripping blocks between two states of the clamping state of clamping the holding portion,
Each gripping block receives the load from the blade side portion in the clamped state, a clamp surface that contacts the holding portion in the clamped state and separates from the holding portion in the unclamped state, and the clamped state Each having a facing surface facing the wing portion extending in the wing length direction from the holding portion at an interval,
It is characterized by that.

  According to the jig unit for a linear friction welding apparatus for an integrated impeller of the present invention described in claim 1, a new integrated impeller is constructed by linearly friction-joining a blade to the peripheral surface of the disk, When repairing an integrated impeller by adding a repairing blade piece to the missing part of the blade erected from the surface by linear friction welding, that is, when manufacturing an integrated impeller, a pair of gripping blocks The blade side portion holding the holding portion by the clamp surface is brought into contact with the disk side portion, and the blade side portion is reciprocated in the chord direction.

  When clamping the wing-side portion delivered from the robot arm or the like, or when unclamping the wing-side portion frictionally joined to the disk-side portion, the direction in which the pair of gripping blocks are separated and approached by the drive source for clamping operation is The chord direction is the same as the direction of reciprocating the wing side portion clamped with respect to the disk side portion.

  On the other hand, when the wing side part is reciprocated with respect to the disk side part, the wing already friction-bonded to the disk is spaced from the wing side part clamped by the gripping block in the inter-blade direction connecting the flank side and the back side of the wing. Arranged.

  For this reason, by designing the outer shape of the grip block in the inter-blade direction in consideration of the distance from the blade already friction-bonded to the disc of the integrated impeller, the wing side portion can be clamped and unclamped. It is possible to prevent interference with surrounding members during the frictional joining of the blade to the peripheral surface of the disk.

Further, linear friction welding apparatus jig unit integrated impeller of the present invention as set forth in claim 1, the front Kitsubasa portion is outward from the contour of the holding portion on the plane perpendicular to the spanwise An extension portion extending to the opposite side of the gripping block that is reciprocated in the direction of the chord by the clamping operation drive source of the both gripping blocks. In this case, opposing surface portions are provided.

  The jig unit for a linear friction welding apparatus for an integrated impeller according to claim 1, wherein the clamping surface of the gripping block and the portion of the holding portion in contact with the clamping block are positioned at the same position in the chord direction. If the wing side portion can be transferred from the robot arm or the like to the gripping block by moving the portion in the wing length direction, the moving direction of the wing side portion by the robot arm or the like can be completed in one direction.

  However, the wing portion of the wing side portion has a curved shape in which the ventral side is concave and the back side is convex. Therefore, the wing part may have an extending part that extends outward from the outline of the holding part of the wing side part on a surface orthogonal to the wing length direction. When there is such an extended part, the blade side part is intended to be transferred from the robot arm or the like by moving only in the blade length direction with respect to the grip block having the above-mentioned positional relationship, or after joining to the disk side part, the blade side If the portion is to be ejected from the gripping block, the extension portion interferes with the clamp surface of the gripping block and cannot be transferred.

Therefore, in the jig unit for a linear friction welding apparatus for an integrated impeller according to the first aspect of the present invention, when the extending portion exists in the blade side portion, the surface portion facing the extending portion is set as the facing surface. The gripping block is a gripping block that is reciprocally moved in the chord direction by a driving source for clamping operation.

  When the blade side part is moved by the robot arm or the like in the blade length direction, the chord is moved from the clamped state to the unclamped state so that the clamp surface does not interfere with the extended part. Move in the direction. As a result, the wing side portion is moved only by the blade length direction by the robot arm, etc., and the wing side portion is transferred from the robot arm etc. to the grip block without interfering with the clamp surface, or joined to the disk side portion. Later, the wing-side part can be discharged from the gripping block.

Furthermore, the jig unit for a linear friction welding apparatus for an integrated impeller of the present invention described in claim 2 is the jig unit for a linear friction welding apparatus for an integrated impeller of the present invention described in claim 1 , Each gripping block has a contact surface that connects the clamp surface and the facing surface and contacts the holding portion from the upstream side in the load direction, and the corresponding contact surface serves as the pressure receiving surface. It is characterized by comprising.

According to the jig unit for the linear friction welding apparatus of the integrated impeller of the present invention described in claim 2 , the jig unit for the linear friction welding apparatus of the integrated impeller of the present invention described in claim 1 , The holding part and the wing part of the wing side part have different contours in a plane orthogonal to the wing length direction. For this reason, the contour in the plane orthogonal to the blade length direction also differs between the clamping surface of each gripping block that abuts the holding portion of the blade side portion and the facing surface of each gripping block that faces the blade portion of the blade side portion.

  For this reason, the surface which connects the holding | maintenance part and wing | blade part of a wing | blade side part, and the contact surface of each holding | grip block corresponding to this can each be comprised by the surface orthogonal to a wing length direction. Note that the contact surface of each gripping block is located inside each gripping block in the clamped state.

  Therefore, in a state where the surface connecting the holding portion and the wing portion of the wing side portion is separated from the contact surface of the gripping block in the wing length direction, a flat surface in the wing length direction provided in the holding portion of the wing side portion. The part is brought into contact with a part of the clamping surface of each gripping block. Then, the disk side part is brought into contact with the blade side part, and the blade side part is moved in the blade length direction with respect to both gripping blocks by the load from the disk side part.

  As a result, the surface connecting the holding part and the wing part of the wing side part abuts on the abutment surface of the grip block, and the blade length load applied from the disk side part to the wing side part is received by the abutment surface of the grip block. Thus, the contact surface functions as a pressure receiving surface.

  Therefore, for example, a flange-shaped part formed in the holding part of the blade side part is brought into contact with the outer surface exposed to face the disk side part of both gripping blocks in a clamped state, so that the outer surface of the gripping block functions as a pressure receiving surface. This eliminates the necessity and simplifies the configuration of the holding portion of the blade side portion.

A jig unit for a linear friction welding apparatus for an integrated impeller according to the present invention described in claim 3 is a jig unit for a linear friction welding apparatus for an integral impeller according to claim 1 or 2. The clamping operation drive source includes a pair of actuators for moving the gripping blocks in the direction of the chord, respectively, and at the time of friction welding the wing side portion to the disk side portion, It further comprises control means for controlling the driving source for the clamping operation so that the both gripping blocks in the clamped state are synchronously moved back and forth with respect to the disk side portion.

According to the jig unit for a linear friction welding apparatus for an integrated impeller of the present invention described in claim 3 , in the jig unit for a linear friction welding apparatus for an integrated impeller of the present invention described in claim 1 or 2 . Each actuator of the driving source for clamping operation that moves each gripping block in the chord direction reciprocally moves both gripping blocks in the chord direction together in a clamped state.

  As a result, the blade-side portion that is in contact with the disk-side portion is reciprocated in the direction of the blade chord together with the clamped clamped clamp blocks, and the clamping drive source is also used as the friction welding drive source. Friction welding of the blade side part to the disk side part can be performed.

Furthermore, the jig unit for a linear friction welding apparatus for an integrated impeller according to the present invention described in claim 4 is a jig unit for the linear friction welding apparatus for an integral impeller according to claim 1, 2 or 3. In the tool unit, a relative position with respect to each gripping block is fixed in the direction of the load, and at least in the clamped state, the tool unit further includes a support portion that contacts the gripping block from the downstream side in the load direction. Features.

According to the jig unit for a linear friction welding apparatus for an integral impeller of the present invention described in claim 4 , the jig for the linear friction welding apparatus for an integral impeller of the present invention described in claim 1, 2 or 3 is used. In the tool unit, when a load in the blade length direction applied from the disk side portion to the blade side portion is transmitted to the pressure receiving surface of the gripping block, the load is received by the support portion that contacts the gripping block. Therefore, the grip block to which a load applied from the disk side portion to the blade side portion can be reinforced by the rigidity of the support portion.

  According to the present invention, when the blade side portion is clamped and unclamped or when the clamped blade side portion is reciprocated in the chord direction with respect to the disk side portion, interference with surrounding members is prevented. be able to.

It is explanatory drawing which shows schematic structure of the linear friction welding apparatus of the integral impeller using the jig | tool unit which concerns on one Embodiment of this invention. It is an expansion perspective view which shows the principal part of the integrated impeller manufactured using the linear friction welding apparatus of FIG. It is explanatory drawing of the wing | blade friction-joined to the surrounding surface of the disk of FIG. It is a perspective view which shows schematic structure of the moving blade holding | maintenance part of FIG. It is explanatory drawing which shows the unclamped state from which the upper and lower holding blocks of FIG. 4 were separated. (A) is a perspective view which shows the structure of the upper side holding block of FIG. 4, (b) is a perspective view which shows the structure of the lower side holding block of FIG. The structure of the holding block in the jig | tool unit which concerns on other embodiment of this invention is shown, (a) is a perspective view of the upper holding block of FIG. 4, (b) is the lower holding block of FIG. It is a perspective view. It is explanatory drawing of another example of the moving blade friction-joined to the surrounding surface of the disk of FIG. It is a perspective view which shows schematic structure of the moving blade holding | maintenance part in the jig | tool unit which concerns on further another embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a schematic configuration of an integrated impeller linear friction welding apparatus using a jig unit according to an embodiment of the present invention.

  A linear friction welding apparatus 10 shown in FIG. 1 is used for manufacturing an integrated impeller (blisk) of a compressor or a turbine. As shown in the enlarged perspective view of FIG. 2, the integrated impeller 1 is obtained by integrating a cylindrical disk 3 and a plurality of moving blades 5 erected from the peripheral surface 3a.

  The linear friction welding apparatus 10 shown in FIG. 1 frictionally joins the rotor blade 5 to the peripheral surface 3a of the disk 3. In this embodiment, the disk 3 corresponds to the disk side portion in the claims, The blade 5 corresponds to a blade side portion in the claims.

  As shown in the explanatory view of FIG. 3 viewed from the blade base side in the blade length direction X shown in FIG. 2, the moving blade 5 is formed on the peripheral surface portion near the joint surface 5 a that is friction bonded to the peripheral surface 3 a of the disk 3. The holding portion 5b has a rectangular cross section. In addition, a rectangular flange portion 5c having an outer shape that is slightly larger than the holding portion 5b is provided on the joint surface 5a side of the holding portion 5b. A blade portion 5d of the moving blade 5 is formed on the side of the holding portion 5b opposite to the flange portion 5c. The holding portion 5b and the flange portion 5c described above are removed by cutting until the outer shape of the normal moving blade 5 is obtained, as indicated by the phantom line in FIG.

  The blade portion 5d of the moving blade 5 has a curved shape in which the ventral side is concave and the back side is convex. Further, the blade portion 5d is twisted over the whole so that the position of the leading edge of the blade portion 5d precedes the blade 5d in the rotation direction of the blade tip than the blade base portion near the holding portion 5b. It has been added. For this reason, as shown in FIG. 3, the wing portion 5d has an extension portion 5e extending leftward from the outline of the holding portion 5b in the plane orthogonal to the blade length direction X, and an extension extending similarly upward. And a protruding portion 5f.

  As shown in FIG. 1, the linear friction welding apparatus 10 of this embodiment includes a base unit 20, a disk holding unit 30, a load applying unit 40, a moving blade holding unit 50, a bearing unit 60, a vibration applying unit 70, and a control. It has part 80 (equivalent to the control means in a claim).

  The base portion 20 has a flat table shape, and is installed on the installation floor of the linear friction welding apparatus 10 via an interference mechanism. On the base unit 20, the units 30 to 70 except for the control unit 80 are arranged.

  The disk holding part 30 is arranged so as to be movable in the horizontal direction approaching and separating from the moving blade holding part 50 along the guide rail 21 on the base part 20. A load is applied to the disk holding unit 30 in a direction approaching the moving blade holding unit 50 by a load applying unit 40 such as a hydraulic cylinder. The disk holding unit 30 includes a rotary actuator 31 that rotates the disk 3 in the circumferential direction by one pitch between adjacent blades 5.

  The moving blade holding part 50 is supported by a bearing part 60 on the base part 20 so as to be movable in the vertical direction with respect to the base part 20. Specifically, as shown in the perspective view of FIG. 4, the moving blade holding unit 50 includes a base block 51, a pair of upper and lower gripping blocks 52 a and 52 b, and a hydraulic cylinder 53 (corresponding to a driving source for clamping operation in the claims). ).

  The base block 51 is supported by the bearing portion 60 shown in FIG. 1 so as to be movable in the vertical direction with respect to the base portion 20. As shown in FIG. 4, a lower grip block 52 b is provided below the base block 51. The hydraulic cylinders 53 are respectively attached to the upper part. The upper gripping block 52 a is connected to the piston rod 53 a of the hydraulic cylinder 53.

  The upper gripping block 52a is in the clamped position shown in FIG. 4 and the unclamped position shown in FIG. 5 in a state where the back surface is in contact with the back surface portion 51a (corresponding to the support portion in the claims) of the base block 51. Is moved up and down by the operation of the hydraulic cylinder 53. The back surface of the lower grip block 52 b is also in contact with the back surface portion 51 a of the base block 51.

  In the clamped state of FIG. 4, the upper gripping block 52 a abuts the lower gripping block 52 b and lowers the holding portion 5 b of the moving blade 5 with the chord direction Y directed in the vertical direction of the linear friction welding apparatus 10. The clamp block 52b is clamped together. In the unclamped state of FIG. 5, the upper gripping block 52a is separated from the lower gripping block 52b to release the clamp of the holding portion 5b. The upper and lower grip blocks 52a and 52b are provided with clamp portions 52c and 52d of the moving blade 5, respectively.

  The clamp part 52c of the upper gripping block 52a grips the upper part and the left side part of the moving blade 5 with the chord direction Y facing up and down. As shown in the perspective view of FIG. The front end 52e of the gripping block 52a that passes through the gripping block 52a in the front-rear direction that coincides with the blade length direction X and faces the disc holding portion 30 is opened to the right side surface 52f.

  The clamp portion 52c includes an inverted L-shaped clamp surface 52g continuous with the front surface 52e and the right side surface 52f of the grip block 52a, a curved relief surface 52h continuous with the left side portion of the clamp surface 52g, and an upper surface of the clamp surface 52g. And a clearance groove 52i that opens in the portion.

  The clamp surface 52g abuts on the upper surface and the left side surface of the holding portion 5b when the holding portion 5b of the moving blade 5 is clamped. Further, the flank 52h is formed on the side surface on the ventral side (concave surface) of the wing part 5d including the leftward extending part 5e of the holding part 5b shown in FIG. 3 in the clamped state of the holding part 5b of the rotor blade 5. Opposite at intervals. The inner wall surface of the escape groove 52i faces the surface of the upwardly extending portion 5f of the holding portion 5b shown in FIG. 3 with a gap in the clamped state of the holding portion 5b of the moving blade 5. In the clamped state of FIG. 4, the end surface of the flange portion 5c of the moving blade 5 abuts the opening edge of the clamp surface 52g in the front surface 52e of the gripping block 52a.

  Therefore, in the upper gripping block 52a of the present embodiment, the flank 52h and the inner wall surface of the flank 52i correspond to the opposing surfaces in the claims. In the upper gripping block 52a of this embodiment, the opening edge portion of the clamp surface 52g in the front surface 52e corresponds to the pressure receiving surface in the claims.

  The clamp portion 52d of the lower gripping block 52b grips the lower portion and the right side portion of the moving blade 5 with the chord direction Y directed up and down. As shown in the perspective view of FIG. 5 is opened to the front surface 52j and the left side surface 52k of the grip block 52b that passes through the grip block 52b in the front-rear direction that coincides with the blade length direction X and faces the disc holding portion 30.

  The clamp portion 52d has an L-shaped clamp surface 52l that is continuous with the front surface 52j and the left side surface 52k of the grip block 52b, and a curved relief surface 52m that is continuous with the right side portion of the clamp surface 52l.

  The clamp surface 52l contacts the lower surface and the right side surface of the holding portion 5b when the holding portion 5b of the moving blade 5 is clamped. The flank 52m faces the back (convex surface) side surface of the blade portion 5d with a gap in the clamped state of the holding portion 5b of the rotor blade 5. Further, the end surface of the flange portion 5c of the moving blade 5 abuts against the opening edge of the clamping surface 52l of the front surface 52j of the gripping block 52b in the clamped state of the holding portion 5b of the moving blade 5.

  Therefore, in the lower gripping block 52b of the present embodiment, the flank 52m corresponds to the opposing surface in the claims. In the lower gripping block 52b of the present embodiment, the opening edge portion of the clamp surface 52l in the front surface 52j corresponds to the pressure receiving surface in the claims.

  The base block 51 and the upper and lower grip blocks 52a and 52b can be formed of, for example, stainless steel. These have rigidity to resist the load from the load applying portion 40 transmitted through the disk 3 of the disk holding portion 30 and the moving blade 5 having the joint surface 5a in contact with the peripheral surface 3a thereof. Further, the grip blocks 52 a and 52 b have heat resistance against the heating temperature of the moving blade 5 when frictionally joined to the peripheral surface 3 a of the disk 3.

  A vibration force that reciprocates in the chord direction Y of the moving blade 5 is applied to the above-described moving blade holding section 50 by the vibration applying section 70 on the base portion 20 shown in FIG. The vibration applying unit 70 can be configured by a hydraulic cylinder or the like.

  Before applying the vibration force by the vibration applying unit 70, the joint surface 5a of the moving blade 5 in which the holding portion 5b is clamped to the upper and lower gripping blocks 52a and 52b of the moving blade holding unit 50 is suitable for friction bonding. May be heated to a different temperature. When heating the moving blade 5, the moving blade 5 may be directly heated, or the moving blade 5 may be indirectly heated via the moving blade holding unit 50. Whether or not to heat the moving blade 5 can be arbitrarily determined according to the conditions such as the material used for the disk 3 and the moving blade 5 and the content of the linear friction welding operation performed by the linear friction welding device 10.

  Note that the rotary actuator 31 provided in the disk holding unit 30 rotates the disk 3, the load applying unit 40 applies a load to the moving blade holding unit 50 side of the disk holding unit 30, and the moving blade holding unit 50 by the vibration applying unit 70. The application of the vibration force in the chord direction Y is controlled by the control unit 80.

  In the linear friction welding apparatus 10 of the present embodiment configured as described above, the joint surface 5a of the moving blade 5 held by the moving blade holding portion 50 is brought into contact with the peripheral surface 3a of the disk 3 held by the disc holding portion 30. Make contact. Then, the blade 5 is reciprocated (vibrated) in the chord direction Y by the vibration applying unit 70 while the disk 3 is pressed against the joint surface 5 a of the blade 5 by the load applying unit 40. As a result, the joint surface 5 a of the rotor blade 5 is frictionally joined to the peripheral surface 3 a of the disk 3.

  The above operation is repeated while the disk 3 is rotated by the rotary actuator 31 of the disk holding unit 30 at intervals of the standing blade 5. Then, if the required number of moving blades 5 are friction bonded to the peripheral surface 3a of the disk 3, the holding portion 5b and the flange portion 5c of each moving blade 5 and the portion of the bonding surface 5a in which burrs are generated by the friction bonding, Using an end mill or the like, it is removed by cutting until the outer shape of the regular moving blade 5 is obtained. Thereby, the integrated impeller 1 in which the disk 3 and the moving blade 5 are integrated is completed.

  In the linear friction welding apparatus 10 of the present embodiment, the upper holding block 52a of the moving blade holding unit 50 can be moved up and down by the hydraulic cylinder 53, and the upper and lower holding blocks 52a and 52b are clamped to the holding unit 5b of the moving blade 5. It was possible to be in a state and an unclamped state. For this reason, by automating the supply of the moving blade 5 to the moving blade holding section 50, the entire friction welding of the moving blade 5 to the disk 3 can be automated. Automation of supply of the moving blade 5 to the moving blade holding part 50 can be realized, for example, as follows.

  First, the upper and lower grip blocks 52a and 52b are separated to the unclamped state of FIG. Then, in a state where the lower surface and the right side surface of the holding portion 5b are arranged on the extended line of the clamp surface 52l of the lower grip block 52b, the blade 5 is moved along the blade length direction X from the front of the grip block 52b. Move to the side. The moving blade 5 can be moved using, for example, a robot arm (not shown) in which the left and right sides and the upper and lower sides of the flange portion 5c of the moving blade 5 are chucked with a chuck at the tip.

  As long as the chuck of the robot arm (not shown) does not interfere, the moving blade 5 is held on the gripping block 52b side until the lower surface and right side surface of the holding portion 5b of the moving blade 5 abut on the clamp surface 52l of the lower gripping block 52b. Then, the upper grip block 52a is lowered by the hydraulic cylinder 53 to the clamped state shown in FIG. Thereby, the clamp surface 52g of the holding block 52a contacts the upper surface and the left side surface of the holding portion 5b of the rotor blade 5.

  At this time, the controller 80 controls the operation of the hydraulic cylinder 53 so that the downward load applied to the upper gripping block 52a is weakened. As a result, the clamp portions 52c and 52d of the upper and lower grip blocks 52a and 52b temporarily hold the holding portion 5b of the rotor blade 5 with a light force.

  Subsequently, chucking of the flange portion 5 c by a robot arm (not shown) is released, the robot arm is retracted from the vicinity of the moving blade holding portion 50, and the disk holding portion 30 approaches the moving blade holding portion 50 by the load applying portion 40. Thus, the peripheral surface 3 a of the disk 3 held by the disk holding unit 30 is brought into pressure contact with the joint surface 5 a of the moving blade 5 held by the moving blade holding unit 50.

  Then, the moving blade 5 that temporarily clamps the holding portion 5 b with the upper and lower gripping blocks 52 a and 52 b is pressed in the blade length direction X by the load applied from the disk 3. As a result, the opening portions of the clamp surfaces 52g and 52l of the front surfaces 52e and 52j, which are the pressure receiving surfaces of the gripping blocks 52a and 52b, are arranged on the blade portion 5d (holding portion 5b) side of the flange portion 5c of the moving blade 5. The end face is pressed.

  Therefore, the operation of the hydraulic cylinder 53 is controlled by the controller 80 so that the downward load applied to the upper gripping block 52a is strengthened. Thereby, the clamp parts 52c and 52d of the upper and lower gripping blocks 52a and 52b are in a state where the holding part 5b of the rotor blade 5 is fully clamped with a strong force.

  In this state, the vibration applying unit 70 applies a vibration force in the chord direction Y to the moving blade holding unit 50, so that the moving blade 5 is friction bonded to the peripheral surface 3 a of the disk 3.

  By repeating the above procedure, the moving blades 5 that are friction-bonded to the respective rotational positions of the peripheral surface 3a of the disk 3 are automatically supplied to the moving blade holding portion 50 each time, and are supplied to the peripheral surface 3a of the disk 3. It can be friction bonded.

  According to the linear friction welding apparatus 10 of the present embodiment having the above-described configuration, the extending portions 5e and 5f extending leftward and upward from the outline of the holding portion 5b of the moving blade 5 are opposed to each other with an interval. The flank 52h and the escaping groove 52i are provided in the upper grip block 52a that can be moved by the hydraulic cylinder 53 between the clamped position and the unclamped position.

  For this reason, when supplying the moving blade 5 to the moving blade holding portion 50, the extending portions 5e and 5f extending respectively to the left and upper sides of the holding portion 5b are brought into contact with the upper surface and the left side surface of the holding portion 5b. The upper grip block 52a can be retracted to the unclamped position so that the clamp surface 52g does not interfere. As a result, the extension direction 5e, 5f of the moving blade 5 interferes with the clamp surface 52g of the upper gripping block 52a while the moving direction when supplying the moving blade 5 to the moving blade holding section 50 is only the blade length direction X. In addition, the moving blade 5 can be transferred from the robot arm to the upper and lower gripping blocks 52a and 52b.

  Further, when the moving blade 5 frictionally joined to the peripheral surface 3a of the disk 3 is discharged from the moving blade holding portion 50, the extended portions 5e and 5f of the moving blade 5 interfere with the clamp surface 52g of the upper gripping block 52a. You can avoid it.

  Further, according to the linear friction welding apparatus 10 of the present embodiment, the moving direction of the upper grip block 52a when the holding portion 5b of the moving blade 5 is clamped and unclamped is the moving blade 5 with respect to the peripheral surface 3a of the disk 3. When the integrated impeller 1 is manufactured by friction welding, the blade chord direction Y of the moving blade 5 is the same as the reciprocating direction of the upper and lower gripping blocks 52a and 52b.

  That is, the moving blade 5 is clamped in the inter-blade direction connecting the ventral side and the back side of the blade portion 5d of the moving blade 5 where the moving blade 5 already frictionally joined to the peripheral surface 3a of the disk 3 exists. The upper grip block 52a does not move to unclamp.

  For this reason, by designing the outer shape of the gripping blocks 52a and 52b in the interblade direction so as not to interfere with the rotor blade 5 that has already been frictionally bonded to the disk 3, the clamping and unclamping of the rotor blade 5 and the disk 3 When the moving blade 5 is frictionally bonded to the peripheral surface 3a, it is possible to prevent interference with peripheral members such as the moving blade 5 on the disk 3 that has already been friction bonded.

  In the present embodiment, the rear surfaces of the upper and lower grip blocks 52 a and 52 b are in contact with the rear surface portion 51 a of the base block 51. Although this configuration may be omitted, the provision of this configuration as in the present embodiment has the following advantages.

  That is, when the load applied to the moving blade 5 from the disk 3 is transmitted from the flange portion 5c of the moving blade 5 to the upper and lower gripping blocks 52a and 52b via the front surfaces 52e and 52j constituting the pressure receiving surface, the load is further increased. Then, it is transmitted to and received by the back surface portion 51a of the base block 51. Therefore, the upper and lower grip blocks 52 a and 52 b to which a load applied from the disk 3 to the moving blade 5 can be reinforced by the rigidity of the back surface portion 51 a of the base block 51.

  In the present embodiment, the rotor blade 5 is provided with a flange portion 5c, and the opening edge portions of the clamp surfaces 52g and 52l of the front surfaces 52e and 52j of the upper and lower grip blocks 52a and 52b with which the end surfaces of the flange portion 5c abut. The rotor blade 5 functions as a pressure receiving surface when receiving a load from the disk 3.

  However, the flange portion 5c of the moving blade 5 may be omitted as in the gripping block in the jig unit according to another embodiment of the present invention shown in the perspective views of FIGS. 7 (a) and 7 (b). In this case, the end surface on the blade portion 5d side of the holding portion 5b of the moving blade 5 is contacted with the contact surfaces 52n and 52o that connect the clamp surfaces 52g and 52l of the upper and lower grip blocks 52a and 52b and the flank surfaces 52h and 52m. It is made to contact and function as a pressure receiving surface.

  When the flange portion 5c is omitted, the supply of the moving blade 5 to the moving blade holding portion 50 by a robot arm (not shown) is performed by chucking the left and right side surfaces and the upper and lower side surfaces of the holding portion 5b of the moving blade 5 with a chuck. Do.

  The supply of the moving blade 5 with the flange portion 5c omitted to the moving blade holding portion 50 is substantially the same as the supply of the moving blade 5 having the flange portion 5 to the moving blade holding portion 50 described in the previous embodiment. That is, first, the upper and lower grip blocks 52a and 52b are separated from each other in an unclamped state, and as shown in FIG. 7B, the lower surface and the right side of the holding portion 5b are on the extension line of the clamp surface 52l of the lower grip block 52b. With the surface arranged, the moving blade 5 is moved along the blade length direction X toward the gripping block 52b from the front of the gripping block 52b.

  When the lower surface and the right side surface of the holding portion 5b of the moving blade 5 are brought into contact with the clamp surface 52l of the lower grip block 52b within a range in which the chuck of the robot arm (not shown) does not interfere with this movement, the upper grip Block 52a is lowered to the clamped state. As a result, as shown in FIG. 7A, the clamp surface 52 g of the grip block 52 a is brought into contact with the upper surface and the left side surface of the holding portion 5 b of the moving blade 5.

  At this time, the control unit 80 controls the operation of the hydraulic cylinder 53 so that the clamp portions 52c and 52d of the upper and lower grip blocks 52a and 52b temporarily clamp the holding portion 5b of the moving blade 5 with a light force. .

  Thereafter, the robot arm whose chucking of the holding portion 5b is released is retracted from the vicinity of the moving blade holding portion 50, and the disc holding portion 30 is approached to the moving blade holding portion 50 by the load applying portion 40. The peripheral surface 3a is pressed against the joint surface 5a of the rotor blade 5.

  Then, the moving blade 5 having the holding portion 5b temporarily clamped by the upper and lower gripping blocks 52a and 52b is pressed in the blade length direction X by the load applied from the disk 3, and moves to the contact surfaces 52n and 52o of the gripping blocks 52a and 52b. The end surface of the holding portion 5b of the blade 5 is pressed.

  Therefore, the control unit 80 controls the operation of the hydraulic cylinder 53 so that the clamp units 52c and 52d of the upper and lower grip blocks 52a and 52b are in a state of being fully clamped by the holding unit 5b of the moving blade 5.

  As described above, if the flange portion 5c of the moving blade 5 is omitted and the step with the holding portion 5b is eliminated, the flange portion 5c of the moving blade 5 becomes unnecessary, and thus the material required when the moving blade 5 is created. Further, it is possible to reduce the material to be removed by cutting after the frictional joining to the peripheral surface 3a of the disk 3.

  By the way, when the moving blade 5 is viewed from the joint surface 5a side in the blade length direction X, the contour of the blade portion 5d extends outward from the contour of the retaining portion 5b as shown in FIG. It is not limited to the left or upper side of 5b. For example, as in the moving blade 5 shown in the explanatory view of FIG. 8, in addition to the extending portions 5e and 5f extending to the left and upward of the holding portion 5b, there is an extending portion 5g extending to the right. There is also a case.

  In such a case, in addition to providing the upper gripping block 52a with a clearance surface 52h and a clearance groove 52i that are opposed to the extension portions 5e and 5f, a surface that is opposed to the extension portion 5g is provided. It is also necessary to provide the lower grip block 52b. Then, the lower gripping block 52b is the same as the upper gripping block 52a so that the extended portion 5g does not interfere when the blade 5 is supplied to and discharged from the blade holding portion 50 by a robot arm (not shown). In order to make the position in the unclamped state different from the position in the clamped state, it is necessary to be configured to be movable in the chord direction Y.

  Therefore, for example, as shown in the perspective view of FIG. 9, the upper and lower gripping blocks 52a and 52b are respectively connected to the hydraulic cylinders 53A and 53B (like the moving blade holding portion 50A in the jig unit according to still another embodiment of the present invention). It may be configured such that it can be moved up and down individually, corresponding to the actuators in the claims. In this case, the hydraulic cylinders 53A and 53B can be used properly under the control of the control unit 80.

  For example, as described above, when the lower gripping block 52b is provided with a surface facing the extended portion 5g of FIG. 8 with a gap, the upper and lower gripping blocks 52a and 52b are connected to each other by the hydraulic cylinders 53A and 53B. Raise and lower in the opposite direction. Thereby, the upper and lower grip blocks 52a and 52b can be moved from one position to the other position between the clamped position and the unclamped position.

  Further, the upper and lower gripping blocks 52a and 52b in the clamped position can be moved up and down in the same direction in synchronism by the hydraulic cylinders 53A and 53B. By doing so, the moving blade 5 is reciprocated (vibrated) in the chord direction Y in a state where the joint surface 5a of the moving blade 5 held by the moving blade holding portion 50 is pressed against the peripheral surface 3a of the disk 3. The joint surface 5 a of the rotor blade 5 can be frictionally joined to the peripheral surface 3 a of the disk 3. In this case, the bearing portion 60 can be omitted.

  Furthermore, in this embodiment, the case where the rotor blade 5 was frictionally joined from the root to the peripheral surface 3a of the disk 3 to newly manufacture the integrated impeller 1 has been described. However, according to the present invention, when repairing the moving blade 5 in which the blade portion 5d of the integrated impeller 1 that has been formed is partially cut, the portion lacking the blade portion 5d is cut off and the repair blade portion is joined. You can also use it.

  In this case, the disk holding part 30 holds a disk side portion composed of the disk 3 and a part on the root side of the blade part 5 d of the moving blade 5, and is held by the upper and lower gripping blocks 52 a and 52 b of the moving blade holding part 50. The tip side portion (blade side portion) of the wing portion 5d for repair added to the base side of the wing portion 5d of the moving blade 5 remaining on the peripheral surface 3a of the disk 3 is held. Then, the cut surface of the blade portion 5d of the rotor blade 5 on the disk 3 side is brought into contact with the joint surface of the blade portion 5d of the rotor blade 5 for repair, and friction welding is performed.

  Further, in the present embodiment, a case has been described in which it is a moving blade that rotates together with the disk that is friction-bonded to the circumferential surface of the disk. However, the present invention can also be applied to manufacturing a blisk in which a non-rotating blade and a disk such as a stationary blade are integrated by friction bonding.

DESCRIPTION OF SYMBOLS 1 Integral impeller 3 Disc 3a Circumferential surface 5 Blade 5a Joint surface 5b Holding part 5c Flange part 5d Wing part 5e, 5f, 5g Extension part 10 Linear friction welding apparatus 20 Base part 21 Guide rail 30 Disc holding part 31 Rotary actuator 40 Load applying portion 50, 50A Rotor blade holding portion 51 Base block 51a Back portion 52a, 52b Grasp block 52c, 52d Clamp portion 52e, 52j Front surface 52f Right side surface 52g, 52l Clamp surface 52h, 52m Relief surface 52i Relief groove 52k Left side surface 52n, 52o Contact surface 53, 53A, 53B Hydraulic cylinder 53a Piston rod 60 Bearing part 70 Vibration imparting part 80 Control part X Blade length direction Y Blade chord direction

Claims (4)

In an integrated impeller in which a disk and a blade are integrated, at least a blade side portion excluding the disk side portion including the disk is reciprocated in the chord direction of the blade side portion and linearly joined to the disk side portion. Used in a linear friction welding apparatus, the blade side part is reciprocated in the chord direction with the blade side part clamped, and the load in the blade length direction applied to the blade side part from the disk side part is applied to the blade side part. A jig unit received from
A pair of gripping blocks for clamping and unclamping the holding part of the wing side part;
An unclamped state in which the two gripping blocks are spaced apart in the chord direction and unclamp the holding portion with dimensions exceeding the outer shape of the blade side portion in the chord direction, and the two gripping blocks approach in the chord direction A clamping operation drive source for relatively moving the pair of gripping blocks between two states of the clamping state of clamping the holding portion,
Each gripping block includes a pressure receiving surface that receives the load from the blade side portion in the clamped state, a clamp surface that contacts the holding portion in the clamped state and is separated from the holding portion in the unclamped state, and the clamped state Each having a facing surface spaced apart from the wing portion extending in the blade length direction from the holding portion ,
The wing portion has an extending portion extending outward from the outline of the holding portion on a surface orthogonal to the wing length direction,
A surface portion that is opposed to the extending portion at an interval is provided on the facing surface of the gripping block that is reciprocally moved in the chord direction by the clamping operation drive source among the gripping blocks.
An integrated impeller linear friction welding apparatus jig unit characterized by the above-mentioned. Each gripping block has a contact surface that connects the clamp surface and the facing surface and abuts the holding portion from the upstream side in the load direction, and the corresponding contact surface is the pressure receiving surface. The jig unit for a linear friction welding apparatus for an integrated impeller according to claim 1, wherein the jig unit is configured. The drive source for the clamp operation includes a pair of actuators that move the gripping blocks in the chord direction, and when the blade side portion is frictionally joined to the disk side portion, the two actuators perform the clamping state. 3. A control means for controlling the drive source for clamping operation so as to reciprocally move the both gripping blocks of the first and second gripping blocks integrally with respect to the disk side portion. Jig unit for linear friction welding device of integrated impeller. A relative position with respect to each of the gripping blocks is fixed in the direction of the load, and at least in the clamped state, further includes a support portion that contacts the gripping block from the downstream side in the direction of the load. claim 1, 2 or 3 linear friction welding apparatus jig unit integrated impeller according.

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