CN113910104A - Throat equivalent adjusting device in turbine guide vane processing - Google Patents
Throat equivalent adjusting device in turbine guide vane processing Download PDFInfo
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- CN113910104A CN113910104A CN202111156158.4A CN202111156158A CN113910104A CN 113910104 A CN113910104 A CN 113910104A CN 202111156158 A CN202111156158 A CN 202111156158A CN 113910104 A CN113910104 A CN 113910104A
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- 238000003754 machining Methods 0.000 claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims description 38
- 239000000956 alloy Substances 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 230000009471 action Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000029154 Narrow face Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/14—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding turbine blades, propeller blades or the like
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- Hydraulic Turbines (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a throat equivalent weight adjusting device in turbine guide blade machining, which comprises a U-shaped base, wherein a U-shaped rotary seat is rotatably connected between two inner side walls of the U-shaped base, a positioning and clamping mechanism for clamping a blade to be machined is arranged on the upper end surface of a bottom plate of the U-shaped rotary seat, and a rotating shaft of the U-shaped rotary seat is parallel to a Z shaft of the blade to be machined; the upper end surface of the bottom plate of the U-shaped base is provided with a cushion block and a height-adjustable supporting piece, the cushion block and the height-adjustable supporting piece are arranged oppositely, the cushion block is positioned on one side below the bottom plate of the U-shaped rotary seat, the height-adjustable supporting piece is positioned on the other side below the bottom plate of the U-shaped rotary seat, and the height-adjustable supporting piece is connected with the other side below the bottom plate of the U-shaped rotary seat; one side below the bottom plate of the U-shaped rotary seat is connected with a cylindrical rod which is just opposite to the cushion block, and a block gauge is arranged between the cylindrical rod and the cushion block. The invention meets the requirements of the throat area of the turbine guider after the subsequent welding and the whole assembly of the blade.
Description
Technical Field
The invention belongs to the technical field of machining of turbine guide blades of aero-engines, and particularly relates to a throat equivalent adjusting device in machining of the turbine guide blades.
Background
The throat area of the engine blade ensures that the exhaust volume of the blade channel is uniform, and the flow of the throat area is related to the thrust of the engine and is an important factor influencing the performance of the engine. The turbine guide blade is made of precision casting in a rough material state, the whole blade body profile and the inner and outer channel profiles are free of allowance, and only the blade basin blade back wedge-shaped surface and the air inlet and exhaust edge plate surface need to be machined. In the machining of a single turbine blade, the angle and the mutual position size between a blade body and a wedge-shaped surface of a blade basin and a blade back are directly related to the equivalent value of a throat of a turbine guide blade, so that whether the throat area of a finally assembled turbine guide device meets the requirement is influenced. As the six positioning points of the blade rough material are mostly positioned on the blade back profile, and the wedge-shaped surface of the blade basin is also an angular reference required by the blade design, the wedge-shaped surface of the blade basin is firstly ground.
Originally when grinding process, blade body location portion and the blade basin wedge face of being processed are all fixed, can't adjust, because there are reasons such as error and defect in the blade woollen, lead to single blade after the machining, in welding bilobed sub-assembly and assembling into whole circle director in the later stage, the throat area can not satisfy the designing requirement, need constantly to measure the apolegamy blade, waste time and energy, workman intensity of labour is big, this problem seriously restricts the delivery of blade product.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a throat equivalent adjusting device in the processing of a turbine guide blade, which ensures the reasonable position between a processed surface and a blade body by quickly and accurately adjusting the rotation angle and the position between the processed surface and the blade body when a wedge surface of a blade basin of a single blade is ground, ensures the throat equivalent value of the single blade, solves the problems from the source and meets the requirements of the throat area of a turbine guide device after the subsequent welding and the whole assembly of the blade.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a throat equivalent adjusting device in turbine guide blade machining comprises a U-shaped base, wherein a U-shaped rotary seat is rotatably connected between two inner side walls of the U-shaped base, a positioning and clamping mechanism for clamping a blade to be machined is arranged on the upper end surface of a bottom plate of the U-shaped rotary seat, and a rotating shaft of the U-shaped rotary seat is parallel to a Z axis of the blade to be machined; a cushion block and a height-adjustable supporting piece are arranged on the upper end face of the bottom plate of the U-shaped base, the cushion block and the height-adjustable supporting piece are arranged oppositely, the cushion block is positioned on one side below the bottom plate of the U-shaped rotary seat, the height-adjustable supporting piece is positioned on the other side below the bottom plate of the U-shaped rotary seat, and the height-adjustable supporting piece is connected with the other side below the bottom plate of the U-shaped rotary seat; one side below the bottom plate of the U-shaped rotary seat is connected with a cylindrical rod which is opposite to the cushion block, and a block gauge is arranged between the cylindrical rod and the cushion block.
Furthermore, the positioning and clamping mechanism comprises a first positioning block, a second positioning block, a third positioning block and a pressing plate, the first positioning block, the second positioning block and the third positioning block are sequentially fixed on the upper end face of the bottom plate of the U-shaped rotary seat along the direction from the cushion block to the height-adjustable supporting piece, the upper end of the first positioning block is provided with a hard alloy rod for positioning the blade body of the blade to be processed, the upper ends of the second positioning block and the third positioning block are respectively and correspondingly provided with two hard alloy rods for positioning the blade body of the blade to be processed, and one side of the third positioning block is provided with a ball positioning pin for positioning the outer edge plate channel of the blade to be processed; the pressing plate is located above the third positioning block and used for pressing the blade basin of the blade to be processed.
Furthermore, a pressure head which is the same as the molded surface of the side pressing part of the blade basin is arranged at the position, used for pressing the blade basin of the blade to be processed, on the pressure plate.
Furthermore, a first supporting block is fixed on the upper end face of the bottom plate of the U-shaped rotary seat below the pressing plate, and the pressing plate is connected with the first supporting block through bolts.
Furthermore, a second supporting block is further arranged on the upper end face of the bottom plate of the U-shaped rotary seat, the second supporting block is arranged right opposite to one side of the third positioning block, and a screw used for tightly jacking the outer edge plate of the blade to be machined is arranged at the position, right opposite to the ball head positioning pin, on the second supporting block.
Furthermore, the upper end face of the bottom plate of the U-shaped rotary seat is also provided with an auxiliary supporting device for supporting the inner and outer edge plates on the back side of the blade to be processed.
Furthermore, the auxiliary supporting device comprises a jacking block, the jacking block is arranged on the upper end face of the bottom plate of the U-shaped rotary seat in a sliding mode, the upper front end face of the jacking block is an inclined plane, a U-shaped groove is formed in the inclined plane downwards, a supporting block only moving longitudinally is arranged in the U-shaped groove, and a supporting pin is arranged at the upper end of the supporting block.
Furthermore, a fixing stud is further arranged on the upper end face of the bottom plate of the U-shaped base, the upper end of the fixing stud penetrates through the bottom plate of the U-shaped rotary seat, and a compression nut used for compressing and fixing the U-shaped rotary seat is matched on the fixing stud.
Further, the U-shaped rotary seat is connected with the U-shaped base through a mandrel, and a bushing is arranged between the mandrel and the U-shaped rotary seat.
Furthermore, an adjusting pad is arranged between the U-shaped rotary seat and the side wall of the U-shaped base.
Compared with the prior art, the invention has at least the following beneficial effects: the invention provides a throat equivalent adjusting device in turbine guide blade machining, which is characterized in that when a wedge-shaped surface of a blade basin of a single blade is ground, the blade to be machined is installed and fixed on a positioning clamping mechanism on the upper end surface of a bottom plate of a U-shaped rotary seat, after the blade is positioned and pressed, the thickness of a cylindrical rod and a block gauge in a cushion block is adjusted according to requirements, a proper block gauge is specifically padded into the U-shaped rotary seat through calculation, and meanwhile, a support piece is adjusted in a height adjusting mode in an adaptive mode, so that the U-shaped rotary seat rotates at a certain angle relative to a U-shaped base, and the U-shaped rotary seat rotates and simultaneously drives the blade on the positioning clamping mechanism on the upper end surface to rotate together, so that the size and the direction of the angle between a blade body profile and the wedge-shaped surface of the blade basin to be machined are changed, and grinding is carried out. Therefore, when the equivalent weight adjusting device is used for grinding the turbine guide blade, the relative positions of the blade body profile and the wedge surface can be conveniently and quickly adjusted, the equivalent weight of the throat of a single blade is controlled, and the throat area of the subsequent combined welding and assembling procedures of the blade meets the design requirement. The adjusting device is novel in structure, reliable in positioning, convenient to operate and high in adjusting and processing efficiency, ensures that the equivalent weight of the throat of the guide vane of the turbine is directly adjusted and controlled in the processing link of a single vane, meets the requirements of the throat area of the whole guider after double-vane welding and assembling, and can completely meet the processing precision and processing requirements of the guide vane of the turbine.
Furthermore, the positioning and clamping mechanism adopts wool to set six positioning points for positioning, comprises five positioning points on the blade body and one point in the outer edge plate channel, and is matched with the pressing plate to be pressed on the side of the blade basin, so that the blade is clamped and positioned, and the structure is simple and reliable.
Further, in order to prevent the blade body from being crushed, a pressure head which is the same as the molded surface of the pressed part at the side of the blade basin is arranged at the position of the pressure plate for pressing the blade basin of the blade to be processed.
Furthermore, a first supporting block is fixed on the upper end face of the bottom plate of the U-shaped rotary seat below the pressing plate, and the pressing plate is connected with the first supporting block through bolts, so that the pressing plate is fixedly mounted conveniently.
Furthermore, a second support block is further arranged on the upper end face of the bottom plate of the U-shaped rotary seat and is arranged right opposite to one side of the third positioning block, and after the blades are clamped, screws which are arranged right opposite to the ball head positioning pins on the second support block correspond to the ball head positioning pins in position and tightly push the outer edge plates of the blades, so that the blades are always attached to the ball head positioning pins in the machining process, and the positioning reliability is guaranteed.
Furthermore, because the positioning and pressing part is arranged on the blade body, the wedge surface of the blade basin at the processing part is arranged on the inner and outer edge plates, the positioning is not reliable or the processing is unstable under the action of cutting force, and the processing precision is influenced, so that the auxiliary supporting device for supporting the inner and outer edge plates at the blade back side of the blade to be processed is designed on the inner and outer edge plates at the corresponding lower part of the processing part.
Furthermore, the auxiliary supporting device comprises a jacking block, the jacking block is slidably arranged on the upper end face of the bottom plate of the U-shaped rotary seat, the upper front end face of the jacking block is an inclined plane, a U-shaped groove is formed in the inclined plane downwards, a supporting block which only moves longitudinally is arranged in the U-shaped groove, and a supporting pin is arranged at the upper end of the supporting block.
Furthermore, after the relative position of the blade profile and the wedge-shaped surface is adjusted by rotating the U-shaped rotary seat, the compression nut is screwed up through the fixing stud installed on the U-shaped base, the U-shaped rotary seat and the U-shaped base are completely fastened, grinding processing can be carried out, and the operation is convenient and reliable.
Further, the U-shaped rotary seat is connected with the U-shaped base through the core shaft, the bushing is arranged between the core shaft and the U-shaped rotary seat, and the bushing prevents the rotary contact surface from being abraded.
Furthermore, an adjusting pad is arranged between the U-shaped rotary seat and the side wall of the U-shaped base, the adjusting pad is convenient for adjusting the axial clearance of the rotating part, and the rotation flexibility is ensured.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an isometric view of a throat equivalent adjustment device in the machining of a turbine guide vane of the present invention;
FIG. 2 is a front view of a throat equivalent adjusting device (including a blade) in the process of machining a turbine guide blade according to the present invention;
FIG. 3 is a top view of a throat equivalent adjustment device (including blades) in the machining of a turbine guide blade according to the present invention;
FIG. 4 is a left side view of a throat equivalent adjustment device (including blades) in the machining of a turbine guide blade according to the present invention;
FIG. 5 is a front view of a U-shaped base of the throat equivalent adjusting device in the process of machining the turbine guide vane;
FIG. 6 is a top view of a U-shaped base of the throat equivalent adjusting device in the process of machining the turbine guide vane of the present invention;
FIG. 7 is a front view of a U-shaped rotary base of the throat equivalent adjusting device in the process of machining the turbine guide vane;
FIG. 8 is a top view of a U-shaped rotary base of the throat equivalent adjusting device in the process of machining the turbine guide vane;
FIG. 9 is a left side view of a U-shaped rotary base of the throat equivalent adjusting device in the process of machining the turbine guide vane;
FIG. 10 is a front view of a second positioning block of the throat equivalent adjustment apparatus for machining a turbine guide vane of the present invention;
FIG. 11 is a top view of a second positioning block of the throat equivalent adjustment apparatus for machining a turbine guide vane of the present invention;
FIG. 12 is a left side view of a second positioning block of the throat equivalent adjustment apparatus for machining a turbine guide vane of the present invention;
FIG. 13 is a front view of an auxiliary supporting device of the throat equivalent adjusting device in the process of machining the turbine guide vane;
FIG. 14 is a top view of an auxiliary supporting device of the throat equivalent adjusting device in the process of machining a turbine guide vane of the present invention;
FIG. 15 is a left side view of an auxiliary supporting device of the throat equivalent adjusting device in the process of machining a turbine guide vane of the present invention;
FIG. 16 is a front view of a pressing plate of the throat equivalent adjustment device in the process of machining a turbine guide vane of the present invention;
FIG. 17 is a top view of a pressure plate of the throat equivalent adjusting device in the process of machining the turbine guide vane.
In the figure: 1-U-shaped base; 2-U-shaped rotary seats; 3-cushion block; 4-a height adjustable support; 5-a cylindrical rod; 6-block gauge; 7-a first positioning block; 8-a second positioning block; 9-a third positioning block; 10-pressing a plate; 11-a cemented carbide rod; 12-ball head locating pin; 13-pressure head; 14-a first branch block; 15-a second branch block; 16-a puller block; 17-a support block; 18-support pins; 19-fixing studs; 20-a compression nut; 21-a mandrel; 22-a liner; 23-adjusting the cushion; 24-blade.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 17, as a specific embodiment of the present invention, a throat equivalent adjusting device in turbine guide blade machining includes a U-shaped base 1, a U-shaped rotary base 2 is rotatably connected between two inner side walls of the U-shaped base 1, a positioning and clamping mechanism for clamping a blade to be machined is disposed on an upper end surface of a bottom plate of the U-shaped rotary base 2, the U-shaped rotary base 2 is rotatable relative to the U-shaped base 1, a rotation axis of the U-shaped rotary base 2 is parallel to a Z axis of the blade to be machined, and a size and a direction of a rotation angle can be controlled, so that a machining portion of the blade to be machined on the positioning and clamping mechanism can be rotatably adjusted. In this embodiment, the bottom surface angle of the U-shaped base 1 is completely consistent with the wedge-shaped surface angle and the direction of the processed leaf basin, and a square lightening hole is formed in the middle.
Specifically, fig. 5 and 6 show a schematic structural view of the U-shaped base 1, and fig. 7, 8 and 9 show a schematic structural view of the U-shaped revolving bed 2. As shown in fig. 1, the U-shaped rotary base 2 is connected to the U-shaped base 1 through the core shaft 21, the core shafts 21 are respectively installed at two ends of the U-shaped rotary base 2 and the U-shaped base 1, a bushing 22 is arranged between each core shaft 21 and the U-shaped rotary base 2, the bushing ensures the rotation precision and improves the wear resistance, and an adjusting pad 23 is arranged between the U-shaped rotary base 2 and the side wall of the U-shaped base 1. In this embodiment, two dabbers 21 are hollow flange axle, the flange end has the screw clearing hole of three equipartition, the cylinder section of flange end and the hole interference fit in the U type base 1, and fix dabber 21 in the side of U type base 1 with three screw, the tip face of cylinder and the bush 22 sliding fit of dabber 21, fit clearance is not more than 0.01mm, and guarantee that the rotation center of both ends dabber 21 should be coaxial, ensure the rotation accuracy, two adjustment pads 23 are installed respectively between U type base 1 side and bush 22 terminal surface, adjustment rotating part axial clearance, guarantee to rotate in a flexible way.
As shown in fig. 1, 2 and 4, a cushion block 3 and a height-adjustable support member 4 are arranged on the upper end surface of the bottom plate of the U-shaped base 1, the cushion block 3 and the height-adjustable support member 4 are arranged oppositely, the cushion block 3 is positioned on one side below the bottom plate of the U-shaped rotary seat 2, the height-adjustable support member 4 is positioned on the other side below the bottom plate of the U-shaped rotary seat 2, and the height-adjustable support member 4 is connected with the other side below the bottom plate of the U-shaped rotary seat 2; one side below the bottom plate of the U-shaped rotary seat 2 is connected with a cylindrical rod 5 which is just opposite to the cushion block 3, and a block gauge 6 is arranged between the cylindrical rod 5 and the cushion block 3. Preferably, a fixing stud 19 is further arranged on the upper end face of the bottom plate of the U-shaped base 1, the upper end of the fixing stud 19 penetrates through the bottom plate of the U-shaped rotary seat 2, and a compression nut 20 for compressing and fixing the U-shaped rotary seat 2 is matched on the fixing stud 19.
The size and the direction of the corner of the U-shaped rotary seat 2 are realized by combining a cushion block 3 and a cylindrical rod 5 with the thickness of a gauge block 6, in the embodiment, the bottom surface of the U-shaped rotary seat 2 is provided with L surfaces which are vertical to each other, the cylindrical rod 5 is fixed on the L surface of the U-shaped rotary seat 2 by two screws and serves as a supporting point, as shown in figure 4, the diameter of the cylindrical rod 5 and the X value of the center of the cylindrical rod 5 away from the rotating center of the U-shaped rotary seat 2 in the horizontal direction are strictly controlled, the tolerance value is +/-0.01 mm, the cushion block 3 is directly arranged on the upper surface of the U-shaped base 1 by the screws, the gauge blocks 6 with different sizes are arranged between the cushion block 3 and the cylindrical rod 5, the size and the direction of the corner of the processing surface of the blade are changed, and the gauge block at the theoretical design position is 10 mm. After the adjustment is finished, the fixing stud 19 arranged on the U-shaped base 1 is used for screwing the compression nut 20, and the U-shaped rotary seat 2 and the U-shaped base 1 are completely fastened, so that the grinding processing can be carried out.
As shown in fig. 1, 2, 3, 4, 10, 11 and 12, the positioning and clamping mechanism includes a first positioning block 7, a second positioning block 8, a third positioning block 9 and a pressing plate 10, the first positioning block 7, the second positioning block 8 and the third positioning block 9 are sequentially fixed on the upper end surface of the bottom plate of the U-shaped rotary base 2 along the direction from the cushion block 3 to the height-adjustable support member 4, the upper end of the first positioning block 7 is provided with a hard alloy rod 11 for positioning the blade body of the blade to be processed, the upper ends of the second positioning block 8 and the third positioning block 9 are respectively and correspondingly provided with two hard alloy rods 11 for positioning the blade body of the blade to be processed, and one side of the third positioning block 9 is provided with a ball head positioning pin 12 for positioning the outer edge plate channel of the blade to be processed; the pressing plate 10 is located above the third positioning block 9, and the pressing plate 10 is used for pressing the blade basin of the blade to be processed.
That is, the positioning and clamping mechanism adopts the woollen to give six positioning points for positioning, five positioning points on the blade body and one point in the outer edge plate channel. In order to avoid crushing of the blade surface of the blade 24 under the action of grinding force during machining, the positioning points of the blade body are all positioned by using hard alloy rods 11, the positions of the hard alloy rods 11 are designed according to the space normal direction of the blade body profile where the positioning points of the blade body are located, and the hard alloy rods 11 are respectively welded on the first positioning block 7, the second positioning block 8 and the third positioning block 9. The surface of the radial positioning point in the channel is an inner arc surface, the positioning is carried out by a step type ball head positioning pin 12, the arc of the ball head positioning pin 12 needs to be controlled, the tolerance is +/-0.01 mm, and the small-end shaft diameter of the ball head positioning pin 12 is arranged in the side hole of the third positioning block 9 and is firmly in interference fit with the side hole. As shown in fig. 16 and 17, the pressing plate 10 is an elbow pressing plate and is pressed against the side of the leaf basin, in order to prevent the leaf body from being pressed and damaged, preferably, the head of the pressing plate 10 is provided with a pressing head 13, the pressing head 13 adopts an aluminum step shaft, the large end surface of the pressing head 13 is completely the same as the profile of the pressed part of the side of the leaf basin, the small end shaft diameter of the pressing head 13 is in interference fit with the end surface hole of the pressing plate 10, and an angular limiting cylindrical pin matched with the pressing plate 10 is arranged. Namely, a pressure head 13 with the same profile as that of the pressed part at the side of the blade basin is arranged at the position of the pressure plate 10 for pressing the blade basin of the blade to be processed.
In a preferred embodiment, a first support block 14 is fixed to the upper end surface of the bottom plate of the U-shaped rotating base 2 below the pressing plate 10, and the pressing plate 10 is connected to the first support block 14 by bolts. Specifically, the first support block 14 is used for mounting a stud and adjusting support matched with the pressure plate 10, and the upper surface of the first support block 14 can be a straight surface or an inclined surface, and the angle is perpendicular to the normal plane of the blade profile at the pressing position.
Referring to fig. 1 and 2, a second support block 15 is further disposed on the upper end surface of the bottom plate of the U-shaped rotary seat 2, the second support block 15 is disposed right opposite to one side of the third positioning block 9, and a screw for tightly supporting the outer edge plate of the blade to be processed is disposed on the second support block 15 right opposite to the ball positioning pin 12. Specifically, the second support block 15 is fixed on the U-shaped rotary base 2 by screws, the screws are screwed into threaded holes in the side surface of the second support block 15, the screws correspond to the ball head positioning pins 12 in position, and the outer edge plate of the blade is tightly pressed against the outer edge plate, so that the blade is always attached to the ball head positioning pins 12 in the machining process, and reliable positioning is ensured.
As a more preferred embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 13, fig. 14 and fig. 15, the upper end surface of the bottom plate of the U-shaped rotary base 2 is further provided with an auxiliary supporting device for supporting the inner and outer edge plates on the blade back side of the blade to be processed. Preferably, the auxiliary supporting device comprises a jacking block 16, the jacking block 16 is slidably arranged on the upper end face of the bottom plate of the U-shaped rotary seat 2, the upper front end face of the jacking block 16 is an inclined plane, a U-shaped groove is formed in the inclined plane downwards, a supporting block 17 only moving longitudinally is arranged in the U-shaped groove, and a supporting pin 18 is arranged at the upper end of the supporting block 17.
Specifically, because the location and the portion of compressing tightly are all at the blade body, and the processing position leaf basin scarf is again in outer fringe board department, probably make the location unreliable or process unstability under the cutting force effect, influence the machining precision, consequently correspond the outer fringe board in the leaf back side of below at the processing position, design four auxiliary stay devices, because operating space is narrow and small, auxiliary stay device adopts the voussoir principle, with the horizontal direction removal convert vertical direction motion into. The upper end surface of the front end of the jacking block 16 is a 10-15 degree surface, a guiding U-shaped groove is formed in the middle, a cylindrical pin is arranged at the rear end of the jacking block to facilitate the operation and movement of the jacking block 16, and a screw is arranged in a waist-shaped groove in the middle of the jacking block 16 to press the jacking block 16. The supporting shoe 17 is the T style of calligraphy, and supporting shoe 17 top round hole becomes an organic whole with supporting pin 18 interference fit, and supporting shoe 17 bottom inclined plane is unanimous and the laminating with 16 degrees faces of tight piece of top, and the middle narrow face of supporting shoe 17 prevents to rotate in inserting the U-shaped groove of tight piece 16 of top, and the bottom cylinder portion of supporting shoe 17 plays guide effect in U type revolving bed 2 corresponds the hole sliding fit. The four supporting pins 18 have large spherical heads and form point contact with the auxiliary supporting points of the blades.
When the invention is used, the back side of the blade to be processed is downward firstly, the blade is arranged in a positioning and clamping mechanism arranged on the upper end surface of a bottom plate of a U-shaped rotary seat 2, six positioning points are completely contacted and reliably positioned, a nut on an elbow pressing plate 10 is screwed, a pressure head 13 is enabled to compress a blade basin profile, then four jacking blocks 16 are respectively pushed towards the blade direction, a supporting block 17 attached to the 16-degree surface of the jacking block is driven to vertically move upwards, a supporting pin 18 is contacted with a blade flange plate to be processed, and a screw is screwed to fasten the jacking block 16, thus realizing auxiliary support. And screws on the jacking blocks 15 are tightened to prevent radial movement in blade machining. The blade can be rotationally adjusted after being positioned and compressed, specifically, the size and the direction of an angle between a blade body profile and a processed blade basin wedge-shaped surface are changed by adjusting the thickness of a middle block gauge 6 between a cylindrical rod 5 and a cushion block 3 according to requirements, a proper block gauge 6 is filled in through calculation, and finally a compression nut 20 is screwed to fasten a U-shaped rotary seat 2, so that the whole adjusting device is integrated to carry out grinding processing.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The throat equivalent weight adjusting device in the machining of the turbine guide blade is characterized by comprising a U-shaped base (1), wherein a U-shaped rotary seat (2) is rotatably connected between two inner side walls of the U-shaped base (1), a positioning and clamping mechanism for clamping the blade to be machined is arranged on the upper end surface of a bottom plate of the U-shaped rotary seat (2), and a rotating shaft of the U-shaped rotary seat (2) is parallel to a Z shaft of the blade to be machined; a cushion block (3) and a height-adjustable supporting piece (4) are arranged on the upper end face of a bottom plate of the U-shaped base (1), the cushion block (3) and the height-adjustable supporting piece (4) are arranged in a right-to-right mode, the cushion block (3) is located on one side below the bottom plate of the U-shaped rotary seat (2), the height-adjustable supporting piece (4) is located on the other side below the bottom plate of the U-shaped rotary seat (2), and the height-adjustable supporting piece (4) is connected with the other side below the bottom plate of the U-shaped rotary seat (2); one side below a bottom plate of the U-shaped rotary seat (2) is connected with a cylindrical rod (5) which is opposite to the cushion block (3), and a block gauge (6) is arranged between the cylindrical rod (5) and the cushion block (3).
2. The throat equivalent adjusting device in turbine guide vane machining according to claim 1, wherein the positioning and clamping mechanism comprises a first positioning block (7), a second positioning block (8), a third positioning block (9) and a pressing plate (10), the first positioning block (7), the second positioning block (8) and the third positioning block (9) are sequentially fixed on the upper end face of the bottom plate of the U-shaped rotary seat (2) along the direction from the cushion block (3) to the height-adjustable supporting piece (4), the upper end of the first positioning block (7) is provided with a hard alloy rod (11) for positioning a blade body of the blade to be machined, the upper ends of the second positioning block (8) and the third positioning block (9) are respectively and correspondingly provided with two hard alloy rods (11) for positioning the blade body of the blade to be machined, one side of the third positioning block (9) is provided with a hard alloy rod (11) for positioning a passage of a ball head outer edge plate of the blade to be machined A positioning pin (12); the pressing plate (10) is located above the third positioning block (9), and the pressing plate (10) is used for pressing the blade basin of the blade to be processed.
3. The throat equivalent adjusting device in the machining of the turbine guide vane is characterized in that a pressure head (13) with the same profile as that of a pressed part at the side of a blade basin is arranged at a position, used for pressing the blade basin of the vane to be machined, on the pressure plate (10).
4. The throat equivalent adjusting device in the machining of the turbine guide blade is characterized in that a first support block (14) is fixed on the upper end face of a bottom plate of the U-shaped rotary seat (2) below the pressure plate (10), and the pressure plate (10) is connected with the first support block (14) through a bolt.
5. The throat equivalent weight adjusting device in the machining of the turbine guide vane is characterized in that a second supporting block (15) is further arranged on the upper end face of a bottom plate of the U-shaped rotary seat (2), the second supporting block (15) is arranged right opposite to one side of the third positioning block (9), and a screw used for jacking an outer edge plate of a vane to be machined is arranged at a position, right opposite to the ball head positioning pin (12), on the second supporting block (15).
6. The throat equivalent adjusting device in the machining of the turbine guide vane is characterized in that an auxiliary supporting device for supporting an inner edge plate and an outer edge plate on the back side of the blade to be machined are further arranged on the upper end face of a bottom plate of the U-shaped rotary seat (2).
7. The throat equivalent weight adjusting device in the machining of the turbine guide vane as claimed in claim 6, wherein the auxiliary supporting device comprises a tightening block (16), the tightening block (16) is slidably arranged on the upper end surface of the bottom plate of the U-shaped rotary seat (2), the upper front end surface of the tightening block (16) is an inclined surface, a U-shaped groove is formed in the inclined surface downwards, a supporting block (17) which only longitudinally displaces is arranged in the U-shaped groove, and a supporting pin (18) is arranged at the upper end of the supporting block (17).
8. The throat equivalent adjusting device in the machining of the turbine guide blade is characterized in that a fixing stud (19) is further arranged on the upper end face of the bottom plate of the U-shaped base (1), the upper end of the fixing stud (19) penetrates through the bottom plate of the U-shaped rotary base (2), and a compression nut (20) used for compressing and fixing the U-shaped rotary base (2) is matched on the fixing stud (19).
9. The throat equivalent adjusting device in the machining of the turbine guide vane is characterized in that the U-shaped rotary seat (2) is connected with the U-shaped base (1) through a mandrel (21), and a bushing (22) is arranged between the mandrel (21) and the U-shaped rotary seat (2).
10. The throat equivalent weight adjusting device in the machining of the turbine guide blade is characterized in that an adjusting pad (23) is arranged between the U-shaped rotary seat (2) and the side wall of the U-shaped base (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156158.4A CN113910104B (en) | 2021-09-29 | 2021-09-29 | Throat equivalent adjusting device in turbine guide vane processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156158.4A CN113910104B (en) | 2021-09-29 | 2021-09-29 | Throat equivalent adjusting device in turbine guide vane processing |
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| CN113910104A true CN113910104A (en) | 2022-01-11 |
| CN113910104B CN113910104B (en) | 2022-09-13 |
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| CN202111156158.4A Active CN113910104B (en) | 2021-09-29 | 2021-09-29 | Throat equivalent adjusting device in turbine guide vane processing |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113910104B (en) | 2022-09-13 |
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Effective date of registration: 20240617 Address after: 710000, Room 401, 4th Floor, Building 7, Dapu Industrial Park, No. 4955 Shangyuan Road, Economic Development Zone, Xi'an City, Shaanxi Province Patentee after: XI'AN Xaec Suntimes HIGH-TECH Co.,Ltd. Country or region after: China Address before: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee before: AECC AVIATION POWER CO,LTD. Country or region before: China |