CN114310214B - Bending tool and method for disassembling rotor retainer ring - Google Patents
Bending tool and method for disassembling rotor retainer ring Download PDFInfo
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- CN114310214B CN114310214B CN202011055797.7A CN202011055797A CN114310214B CN 114310214 B CN114310214 B CN 114310214B CN 202011055797 A CN202011055797 A CN 202011055797A CN 114310214 B CN114310214 B CN 114310214B
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Abstract
The invention provides a bending tool and a method for disassembling a rotor retainer ring, which can apply a pulling force consistent with the deformation direction of a bent workpiece to gradually bend the workpiece. In a bending tool: the arc part of the support is provided with a guide arc surface and a guide groove arranged along the arc length direction; the draw hook comprises a rod part and a hook which penetrate through the guide groove; the fixed component is fixed on the rod part, and the guide matching part of the fixed component is movably matched on the guide arc surface; the guide center of the guide arc surface is arranged to be concentric with the reference arc, the rod part is kept in the tangential direction of the reference arc, and the position where the hook is in contact with the free end of the workpiece is kept on the reference arc in the process that the draw hook can rotate to bend. The method for disassembling the rotor retainer ring adopts the bending tool, and comprises the following steps: fixing the support on a rotor disc, and enabling the guide center to coincide with the bending rotation center of the bendable baffle plate; hooking the hook on the free end of the bendable baffle plate; and the operation drag hook pulls the bendable baffle plate to bend until the blocking of the tenon is avoided.
Description
Technical Field
The invention relates to the technical field of engine assembly, in particular to a bending tool and a method for disassembling a rotor retainer ring.
Background
A novel engine compressor rotor 100 is shown in figures 1 and 2 and comprises a rotor disc 1, a plurality of blades 2 and a multi-section type retaining ring 3, wherein the blades 2 are respectively connected with a plurality of circumferential mortises 11 of the rotor disc 1 through dovetail type or fir-tree type tenons 21 so as to limit the circumferential movement freedom degree of the blades 2, and the multi-section type retaining ring 3 is installed in a tenon clamping groove 22 of each blade 2 and a disc drum clamping groove 12 of the rotor disc 1 so as to limit the axial movement freedom degree of the blades 2.
Multistage formula retaining ring 3 is as shown in fig. 1 to 5, including a plurality of normal baffles 31 and at least one special baffle 32, normal baffle 31 and special baffle 32 are provided with dodge the groove 33, dodge the groove 33 and be used for dodging the tenon 21 of blade 2, dodging groove 33 both sides and forming jack catch 34, the bottom of dodging groove 33 of one of special baffle 32 is equipped with bendable separation blade 35, and the free end of bendable separation blade 35 is equipped with thickening boss 351.
During installation, firstly, the plurality of blades 2 are respectively installed in the plurality of mortises 11 of the rotor disc 1, then after the avoiding grooves 33 of the normal baffles 31 or the special baffles 32 are aligned with the tenons 21 of the blades 2, the normal baffles 31 or the special baffles 32 are placed at the tail ends of the tenons 21 and are inserted into the disc drum clamping grooves 12, after all the normal baffles 31 and the special baffles 32 form a whole circle of check rings 3, the check rings 3 are rotated integrally at a small angle, so that the clamping jaws 34 of the normal baffles 31 and the special baffles 32 are rotated into the tenon clamping grooves 22, the bendable baffle plates 35 of the special baffles 32 are bent straight, the bendable baffle plates 35 are positioned between the tenons 21 of the two adjacent blades 2, the integral rotation of the check rings 3 can be prevented, the clamping jaws 34 of the check rings 3 are prevented from being separated from the tenon clamping grooves 22, and the axial limiting of the rotor blades 2 is realized.
When the retainer ring 3 is disassembled, the bendable baffle 35 needs to be bent to form the avoiding groove 33, the bendable baffle 35 is of an outward turning structure, a screwdriver is pried in a gap between the bendable baffle 35 and the blade 2 in the conventional disassembling process, the blade edge plate needs to be used as a fulcrum of the screwdriver when the blade is pried, and the blade edge plate is thin and cannot bear excessive pressure, so that the blade 2 is easily damaged by adopting the mode. In addition, the bendable baffle 35 can be clamped between the tenons 21 of any two adjacent blades 2 in an unbent state, namely, the mounting position of the special baffle 32 is not unique, and in the disassembly process, the bendable baffle 35 needs to be bent by nearly 90 degrees, the bending angle is large, and the requirements of a conventional bending tool are difficult to meet.
It should be noted that the above is only background art and does not belong to the prior art of the present invention.
Disclosure of Invention
An object of the present invention is to provide a bending tool capable of applying a pulling force in accordance with a deformation direction of a workpiece to be bent, so that the workpiece to be bent is stably and gradually bent, and the bending tool is simple in operation, safe and reliable.
To achieve the object, a bending tool includes: the support is provided with an arc part, the arc part is provided with a guide arc surface and a guide groove arranged along the arc length direction of the guide arc surface, and the guide arc surface is provided with a guide center; the draw hook comprises a rod part and a hook, the hook is used for hooking the free end of a bent workpiece, the hook is connected with the rod part, and the rod part penetrates through the guide groove; the fixing component is fixed on the rod part and comprises a guide matching part; wherein a position where the hook contacts with the free end is located on a reference arc, the guide center is disposed concentrically with the reference arc, the guide engaging portion is disposed on the guide arc surface and movably engages to allow the drag hook to rotatably perform a bending operation, and during the rotation, the rod portion is held in a tangential direction of the reference arc, and a position where the hook contacts with the free end is held on the reference arc.
In one or more embodiments of the bending tool, the support includes a support first portion and a support second portion, and the support first portion and the support second portion are connected by a fastener to form a jaw.
In one or more embodiments of the bending tool, the first support portion includes a conformal portion and a body portion, the conformal portion and the body portion are separately formed, the body portion provides the arc portion, the conformal portion conforms to a component clamped by the jaws, and the conformal portion and the component clamped by the jaws are sandwiched between the body portion and the second support portion connected by the fastener.
In one or more embodiments of the bending tool, the body portion includes an arcuate cantilever arm that provides the arcuate portion.
In one or more embodiments of the bending tool, the support includes a plurality of the conformal portions of different specifications, and one of the conformal portions is selected to be mounted on the support according to the specification of the component clamped by the jaw during the bending operation.
In one or more embodiments of the bending tool, the fixing assembly further includes a fixing seat fixed on the rod portion, the guide fitting portion is a pair of rollers, and the rollers are respectively disposed on two sides of the fixing seat.
In one or more embodiments of the bending tool, the fixing seat is provided with a through hole for the rod to pass through, and the rod is connected with a limit nut in a threaded manner, and the limit nut positions the fixing component on the rod.
In one or more embodiments of the bending tool, the rod portion is provided with an anti-rotation groove, the fixing base is further provided with an anti-rotation pin hole, and an anti-rotation pin penetrates through the anti-rotation pin hole to be matched with the anti-rotation groove, so that the fixing base and the rod portion can be connected in an anti-rotation mode.
In one or more embodiments of the bending tool, the anti-rotation groove is a groove having a length in a length direction of the shaft portion.
The bending tool is characterized in that the guide matching part is matched with the guide arc surface, the operation drag hook rotates in the guide groove, the bent workpiece is pulled to perform bending rotation by taking the circle center of the reference arc as a bending rotation center, and the direction of the pull force of the hook on the free end of the bent workpiece is always perpendicular to the free end, namely is consistent with the deformation direction of the free end, so that the bent workpiece is stably and gradually bent, and the abnormal deformation of the bent workpiece in the bending process is avoided. The bending tool is simple to operate, safe and reliable.
Another object of the present invention is to provide a method for disassembling a rotor retainer ring, which can realize stable gradual bending of a special baffle at any installation position, and will not damage engine parts.
To achieve the above object, a method for disassembling a retainer ring of a rotor, the rotor including a rotor disk and a plurality of blades, the plurality of blades being retained by the retainer ring by a plurality of retaining plates, at least one of the retaining plates including a bendable retaining plate, the bendable retaining plate being capable of retaining a tenon of an adjacent blade in an unbent state to prevent the retainer ring from being disassembled from the blade, the method for disassembling the retainer ring of the rotor includes: fixing the support on the rotor disc, and enabling the guide center to be coincident with the bending rotation center of the bendable baffle; hooking the hook to the free end of the bendable baffle; operating the drag hook to rotate by means of the matching of the guide matching part and the guide arc surface, pulling the bendable blocking piece to bend and rotate around the bending rotation center, and simultaneously rotating the free end of the bendable blocking piece along the reference arc until the bendable blocking piece is bent in place so that the bendable blocking piece avoids the blocking of the tenon of the adjacent blade; detaching the baffle with the bendable baffle; and removing the other baffles.
According to the disassembling method of the rotor separation blade, the bending tool is adopted, so that the rotor separation blade can be fixed and positioned at any angle of the rotor disc, and the disassembling requirement that the mounting position of the special baffle with the bending separation blade is not unique is met. The drag hook can rotate on the support at multiple angles, and always exerts the pulling force which is consistent with the deformation direction on the bendable separation blade, so that the bendable separation blade is stably and gradually bent, the phenomenon that the bendable separation blade is abnormally deformed in the bending process to cause the scrapping of a special baffle is avoided, and the reuse rate of the special baffle is improved. The decomposition method is simple to operate, safe and reliable, and cannot damage the blade edge plate or other engine parts.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and examples, in which:
fig. 1 is a partial structural schematic diagram of a compressor rotor of an engine.
FIG. 2 is a schematic partial cross-sectional view of an engine compressor rotor.
Fig. 3 is a schematic view of a normal baffle of the rotor retainer ring.
Fig. 4 is a schematic view of a bendable flap of a special shield of the rotor retainer ring in a bent state.
Fig. 5 is a schematic view of a particular flap of the rotor retainer in an unfolded state.
Fig. 6 is a schematic diagram of a bending tool in accordance with one or more embodiments.
Fig. 7 is a schematic diagram of a fastening assembly of a bending tool in accordance with one or more embodiments.
Fig. 8 is a schematic illustration of a partial structure of a bending tool in accordance with one or more embodiments.
FIG. 9 is a schematic illustration in partial cross-section of a bending tool in accordance with one or more embodiments.
Fig. 10 is a schematic view of a structure of a bending tool to disassemble a rotor retainer ring according to one or more embodiments.
Fig. 11 is a schematic illustration of an initial state of a bending tool to bend a particular baffle in accordance with one or more embodiments.
Fig. 12 is a schematic illustration of an intermediate state in which a bending tool bends a particular baffle in accordance with one or more embodiments.
Fig. 13 is a schematic illustration of a final state of bending a particular baffle by a bending tool in accordance with one or more embodiments.
Detailed Description
The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and do not limit the scope of the invention. For example, if a first feature is formed over or on a second feature described later in the specification, this may include embodiments in which the first and second features are formed in direct contact, and may also include embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact. Additionally, reference numerals and/or letters may be repeated among the various examples throughout this disclosure. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Further, when a first element is described as being coupled or joined to a second element, the description includes embodiments in which the first and second elements are directly coupled or joined to each other and also includes embodiments in which the first and second elements are indirectly coupled or joined to each other with the addition of one or more other intervening elements. It is to be noted that the drawings are given by way of example only and are not to scale, and should not be construed so as to limit the scope of the invention. In the description of the present invention, it is to be understood that the spatial relationship words are intended only for convenience of description, and may encompass other orientations of the elements in addition to the orientation depicted in the figures. For example, if an element is turned over, elements described as being "on front," "front," or "forward" of other elements or features might be oriented "on the back" of the other elements or features or could be oriented "on the left," "on the bottom," "on the right," etc. of the other elements or features if turned over at a particular angle. Further, the conversion methods in the different embodiments may be appropriately combined.
The bending tool 200 of the present invention, as shown in fig. 6 to 13, includes a support 4, a retractor 5 and a fixing member 6. The holder 4 is provided with an arc portion 41, the arc portion 41 has a guide arc surface 42, and a guide groove 43 opened in the arc length direction of the guide arc surface 42, and the guide arc surface 42 has a guide center 44. The retractor 5 includes a rod portion 51 and a hook 52, the hook 52 is used for hooking the free end of the bent workpiece, the hook 52 is connected with the rod portion 51, and the rod portion 51 passes through the guide groove 43. The fixing member 6 is fixed to the rod portion 51 and includes a guide fitting portion 61. Wherein the position where the hook 52 contacts the free end of the workpiece to be bent is located on a reference arc (not shown); the guide center 44 is disposed concentrically with the reference circular arc, the guide engaging portion 61 is provided on the guide circular arc surface 42 and movably engages with the guide circular arc surface 42 to allow the drag hook 5 to rotatably perform a bending operation, and during the rotation, the rod portion 51 is held in a tangential direction of the reference circular arc, and a position where the hook 52 contacts with a free end of a workpiece to be bent is held on the reference circular arc.
The working principle of bending tool 200 is explained below by way of example with the embodiment shown in fig. 10 to 13. In this embodiment, the workpiece to be bent is the special baffle 32, the bending rotation center of the bendable flap 35 of the special baffle 32 is 36, the free end is 37, and the bending radius is r, the movement locus of the free end 37 is the reference arc in the bending process, the bending rotation center 36 is the center of the reference arc, and the bending radius r is the radius of the reference arc. The radius of the guide center 44 to any point on the guide arc surface 42 is R, the distance from the intersection point of the rod part 51 and the guide arc surface 42 to the contact position of the hook 52 and the free end 37 is L, and the guide center 44 is set to be the center of the reference arc, i.e., the bending rotation center 36 is heavyCombining, and setting the values of L and R to make R 2 ＝L 2 +r 2 It is possible to keep the lever portion 51 in the tangential direction of the reference arc all the time during the rotation in the guide groove 43, and the position where the hook 52 contacts the free end 37 is kept on the reference arc.
Therefore, the bending tool 200 operates the drag hook 5 to rotate in the guide groove 43 by means of the matching of the guide matching part 61 and the guide arc surface 42, so as to pull the workpiece to be bent to perform bending rotation by taking the center of the reference arc as the bending rotation center, and the direction of the pull force of the hook 52 to the free end of the workpiece to be bent is always perpendicular to the free end, namely consistent with the deformation direction of the free end, so that the workpiece to be bent is stably and gradually bent, and the abnormal deformation of the workpiece to be bent in the bending process is avoided. The bending tool 200 is simple to operate, safe and reliable.
Referring to fig. 6 to 13, the support 4 is a split structure and includes a first support portion 45 and a second support portion 46, the first support portion 45 and the second support portion 46 are connected by a fastener 47 to form a jaw 48, and the jaw 48 is used for clamping on a workpiece to be bent or/and a workpiece connected with the workpiece to be bent, so as to fix and position the bending tool 200, and further improve the stability during the bending process.
Referring to fig. 11 to 13, the first support portion 45 includes a through hole 454, the second support portion 46 includes a vertical pillar 461, the vertical pillar 461 includes a threaded section 461a, the fastening member 47 is a nut, the vertical pillar 461 passes through the through hole 454, and the threaded section 461a of the vertical pillar 461 extends out of the through hole 454 and is fastened by the fastening member 47.
In some embodiments, the first and second holder portions 45 and 46 can be connected in other ways, for example, the first and second holder portions 45 and 46 can have through holes (not shown), and the fastener 47 can include a bolt and a nut (not shown), wherein the bolt passes through the through holes of the first and second holder portions 45 and 46 and is locked by the nut.
In some embodiments, the support 4 may also be fixed to the workpiece to be bent or/and the workpiece connected to the workpiece to be bent by a suction cup, a magnet, a fastener, a snap connection, or other methods, and the support 4 may be provided as an integral structure or a separate structure.
With continued reference to fig. 6-13, holder first portion 45 includes a conformal portion 451 and a body portion 452, conformal portion 451 and body portion 452 are separately formed, body portion 452 provides arcuate portion 41, conformal portion 451 conforms to a part clamped by jaw 48, the part may be a bent workpiece or/and a workpiece connected to a bent workpiece, and conformal portion 451 and the part are clamped between body portion 452 and holder second portion 46 connected by fastener 47, i.e., between conformal portion 451 and holder second portion 46, to form jaw 48. Thus, the structure of the bending tool 200 can be simplified to facilitate the processing and assembly, and the bending tool 200 can be more stably fixed and positioned to further improve the stability in the bending process.
The support 4 may include a plurality of shape-following portions 451 of different specifications, and when a bending operation is performed, one of the shape-following portions 451 is selected and attached to the support 4 according to the specification of a component held by the jaw 48, whereby the versatility of the bending tool 200 can be improved.
The body portion 452 includes an arc-shaped cantilever 453, and the arc-shaped cantilever 453 provides the arc-shaped portion 41, whereby the working state of the hook 5 can be easily observed from the radially inner side of the arc-shaped cantilever 453, and the structure of the bending tool 200 can be simplified, saving material, and facilitating the manufacturing.
Referring to fig. 6 to 9, the fixing assembly 6 further includes a fixing base 62 fixed on the rod portion 51, the guiding engagement portion 61 is a pair of rollers 611, and the rollers 611 are respectively disposed on two sides of the fixing base 62, so that the rollers 611 engage with the guiding arc surface 42, and the rolling friction is utilized to reduce the resistance to be overcome when pulling the retractor 5 while transmitting the deformation tension, so as to facilitate the operation.
The fixing seat 62 is provided with a through hole 621 for the rod part 51 to pass through, the rod part 51 is connected with the limiting nut 7 in a threaded mode, and the limiting nut 7 positions the fixing component 6 on the rod part 51.
Referring to fig. 7 and 9, the rod portion 51 is provided with an anti-rotation groove 511, the fixing seat 62 is further provided with an anti-rotation pin hole 622, and the anti-rotation pin 63 passes through the anti-rotation pin hole 622 to be engaged with the anti-rotation groove 511, thereby connecting the fixing seat 62 and the rod portion 51 in an anti-rotation manner, so that the hook 52 is prevented from rotating axially while the guide engaging portion 61 moves along the guide arc surface 42.
Referring to fig. 9, the rotation preventing groove 511 is a groove having a length in the length direction of the shaft portion 51, whereby the distance between the hook 52 and the guide circular arc surface 42 can be adjusted to improve the versatility of the bending tool 200.
In some embodiments, the shaft 51 may also achieve the anti-rotation effect in other ways, for example, the shaft 51 is provided with a guiding side (not shown) parallel to the axial direction of the shaft 51, and the shaft 51 is engaged with the guiding groove 43 and/or the through hole 621 of the fixing seat 62 through the guiding side, so that the guiding engagement portion 61 is moved along the guiding arc surface 42 while preventing the hook 52 from rotating axially.
With continued reference to fig. 7 and 9, rollers 611 are respectively attached to both sides of holder 62 by bolts 612, whereby the structure of bending tool 200 can be simplified for ease of machining and assembly.
In some embodiments, the rollers 611 may also be connected to both sides of the fixing base 62 by anti-rotation pins 63, the middle portions of the anti-rotation pins 63 pass through anti-rotation pin holes 622 to be matched with the anti-rotation grooves 511, external threads (not shown) are provided at both ends of the anti-rotation pins 63, and both ends of the anti-rotation pins 63 respectively pass through the two rollers 611 and are locked by nuts (not shown), thereby simplifying the structure of the bending tool 200 for processing and assembling.
Referring to fig. 6, the retractor 5 includes a handle 53, the handle 53 and the hook 52 are respectively located at both ends of the rod portion 51, and the handle 53 is located at the radial outer side of the guiding arc surface 42, so that the hook 52 can be pulled by the handle 53 to perform a bending operation for applying force.
The grip 53 may be formed as a part of the shaft portion 51, for example, by providing a flat surface or a concave surface on the side of the shaft portion 51 for easy handling, or by performing knurling processing or the like on the outer surface of the shaft portion 51, whereby the structure of the bending tool 200 can be simplified for easy processing and assembly.
The method for disassembling the rotor blade of the present invention adopts the bending tool 200 for disassembling the multi-segment retainer ring 3 of the rotor 100 described in the background section. The rotor 100 comprises a rotor disc 1 and a plurality of blades 2, the plurality of blades 2 are limited by a multi-section retainer ring 3, the multi-section retainer ring 3 is a whole-circle retainer ring consisting of a plurality of normal baffles 31 and at least one special baffle 32, the at least one special baffle 32 comprises a bendable baffle 35, and the bendable baffle 35 can be blocked with a rabbet 21 of an adjacent blade 2 in an unbent state so as to prevent the disassembly of the retainer ring 3 and the blade 2.
Referring to fig. 10 to 13, the steps of the decomposition method include:
1. fixing the support 4 of the bending tool 200 on the rotor disc 1 and coinciding the guiding centre 44 with the bending rotation centre 36 of the bendable flaps 35 of the special baffle 32;
2. hooking the hook 52 to the free end 37 of the flexible flap 35 of the particular baffle 32;
3. by means of the matching of the guiding matching part 61 and the guiding arc surface 42, the draw hook 5 is operated to rotate, the bendable blocking piece 35 is pulled to perform bending rotation around the bending rotation center 36, meanwhile, the free end 37 of the bendable blocking piece 35 rotates along the reference arc until the bendable blocking piece 35 is bent in place, and therefore the bendable blocking piece 35 avoids the blocking of the tenon 21 of the adjacent blade 2;
4. rotating the retainer ring 3 at a small angle integrally to enable the jaws 34 of the normal baffle 31 and the special baffle 32 to be disengaged from the tenon clamping grooves 22, and enabling the avoidance grooves 33 of the normal baffle 31 and the special baffle 32 to be aligned with the tenons 21 of the blades 2;
5. the normal barrier 31 and the special barrier 32 are removed.
According to the disassembling method of the rotor blocking piece, the bending tool 200 is adopted, so that the rotor disc 1 can be fixed and positioned at any angle, and the disassembling requirement that the mounting position of the special baffle 32 with the bendable blocking piece 35 is not unique is met. The drag hook 5 can rotate on the support 4 at multiple angles, and always applies pulling force consistent with the deformation direction to the bendable baffle 35, so that the bendable baffle 35 is stably and gradually bent, abnormal deformation of the bendable baffle 35 in the bending process is avoided, the special baffle 32 is scrapped, and the reuse rate of the special baffle 32 is improved. The decomposition method is simple to operate, safe and reliable, and cannot damage the blade edge plate or other engine parts.
With continued reference to fig. 10 to 13, the shape following portion 451 is selected to be positioned by the flange boss 13 of the drum clamping slot 12 near the bending rotation center 36 of the bendable flap 35, and is clamped and fixed by the double-clamp structure formed by the body portion 452 and the second portion 46 of the support, so that the clamping stability during the bending process can be ensured, the bendable flap 35 can be bent along the bending rotation center 36, and the bendable flap 35 is prevented from being deformed abnormally during the bending process.
The following portion 451 has an L-shaped structure, and includes a first plate 451a and a second plate 451b, the first plate 451a follows the end surface of the rotor disc 1, and the second plate 451b follows the core 14 of the rotor disc 1, whereby the stability of clamping during bending can be further improved.
Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are within the scope of the present invention defined by the claims.
Claims (10)
1. Bending tool, its characterized in that includes:
the support is used for providing an arc-shaped part, the arc-shaped part is provided with a guide arc surface and a guide groove arranged along the arc length direction of the guide arc surface, and the guide arc surface is provided with a guide center;
the draw hook comprises a rod part and a hook, the hook is used for hooking the free end of a bent workpiece, the hook is connected with the rod part, and the rod part penetrates through the guide groove; and
the fixing component is fixed on the rod part and comprises a guide matching part;
wherein a position where the hook contacts with the free end is located on a reference arc, the guide center is disposed concentrically with the reference arc, the guide engaging portion is disposed on the guide arc surface and movably engages to allow the drag hook to rotatably perform a bending operation, and during the rotation, the rod portion is held in a tangential direction of the reference arc, and a position where the hook contacts with the free end is held on the reference arc.
2. The bending tool of claim 1, wherein the support includes a support first portion and a support second portion, the support first portion and the support second portion being connected by a fastener to form a jaw.
3. The bending tool according to claim 2, wherein the holder first portion includes a follower portion and a body portion, the follower portion and the body portion being separately formed, the body portion providing the arcuate portion, the follower portion following a component gripped by the jaws, the follower portion and the component gripped by the jaws being sandwiched between the body portion and the holder second portion connected by the fastener.
4. The bending tool according to claim 3, wherein the body portion includes an arcuate cantilever arm that provides the arcuate portion.
5. The bending tool according to claim 3, wherein the holder includes a plurality of the followers having different specifications, and one of the followers is selected to be fitted on the holder in accordance with the specification of the component held by the jaws in the bending operation.
6. The bending tool according to claim 1, wherein the fixing assembly further comprises a fixing base fixed to the rod portion, and the guide engagement portion is a pair of rollers provided on both sides of the fixing base, respectively.
7. The bending tool according to claim 6, wherein the holder provides a bore through which the shank passes, the shank being threadably coupled to a stop nut that positions the securing assembly on the shank.
8. The bending tool according to claim 6, wherein the rod portion is provided with an anti-rotation groove, and the fixing base is further provided with an anti-rotation pin hole through which an anti-rotation pin passes to be engaged with the anti-rotation groove, thereby connecting the fixing base and the rod portion in an anti-rotation manner.
9. The bending tool according to claim 8, wherein the anti-rotation slot is a slot having a length along a length of the shaft portion.
10. Method for disassembling a shroud of a rotor comprising a rotor disc and a plurality of blades, said plurality of blades being retained by a shroud made up of a plurality of flaps, at least one of said flaps comprising a flexible flap which in an unflexed condition is in abutment with a tenon of an adjacent said blade so as to prevent disassembly of said shroud from said blade, characterized in that it uses a bending tool according to any one of claims 1 to 9, comprising:
fixing the support on the rotor disc, and enabling the guide center to be coincident with the bending rotation center of the bendable baffle;
hooking the hook to the free end of the bendable baffle plate;
operating the drag hook to rotate by means of the matching of the guide matching part and the guide arc surface, pulling the bendable blocking piece to bend and rotate around the bending rotation center, and simultaneously rotating the free end of the bendable blocking piece along the reference arc until the bendable blocking piece is bent in place so that the bendable blocking piece avoids the blocking of the tenon of the adjacent blade;
detaching the baffle with the foldable baffle; and
and (4) removing other baffles.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055797.7A CN114310214B (en) | 2020-09-30 | 2020-09-30 | Bending tool and method for disassembling rotor retainer ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055797.7A CN114310214B (en) | 2020-09-30 | 2020-09-30 | Bending tool and method for disassembling rotor retainer ring |
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| CN114310214A CN114310214A (en) | 2022-04-12 |
| CN114310214B true CN114310214B (en) | 2022-11-11 |
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| CN2461712Y (en) * | 2000-12-27 | 2001-11-28 | 富士康(昆山)电脑接插件有限公司 | Fastening mounting tool |
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| CN114310214A (en) | 2022-04-12 |
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