CN113649659B - Wire cutting processing method for shroud ring - Google Patents
Wire cutting processing method for shroud ring Download PDFInfo
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- CN113649659B CN113649659B CN202110810740.1A CN202110810740A CN113649659B CN 113649659 B CN113649659 B CN 113649659B CN 202110810740 A CN202110810740 A CN 202110810740A CN 113649659 B CN113649659 B CN 113649659B
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- mounting ring
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- 238000005520 cutting process Methods 0.000 title claims abstract description 37
- 238000003672 processing method Methods 0.000 title claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000003754 machining Methods 0.000 claims abstract description 22
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 12
- 238000007781 pre-processing Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 238000003698 laser cutting Methods 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a wire cutting processing method of a shroud ring, which comprises the following steps: the method comprises the steps of drilling indexing holes on a workpiece mounting ring, drilling corresponding threading holes on a to-be-machined shroud ring welded on the workpiece mounting ring, then mounting the whole of the to-be-machined shroud ring on a base of a machine tool accurately, detecting, aligning any indexing hole with a positioning groove during machining, positioning, rotating the workpiece mounting ring to align the next indexing hole with the positioning groove after machining, performing linear cutting machining on all holes, fixing the shroud ring to be machined by adopting a tool, setting detection gaps, and quickly judging whether to install the workpiece in place or not by inserting a detection clamp.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a wire cutting machining method for a shroud ring.
Background
Shroud refers to a structure for reducing the vibratory response of a blade for one of a power station turbine, gas turbine, aero-engine, and other rotating machinery blades. The shroud structure dissipates the vibration energy of the blades by friction between adjacent blades, thereby achieving the effect of vibration reduction. At the blade top, there is an initial clearance between adjacent shroud ring of assembled blade when static, and during operation is under centrifugal force's effect, and the blade takes place to twist reverse and resumes for adjacent blade shroud ring contact surface pastes tightly each other, and when the blade vibrates, the relative slip effect that takes place between the shroud ring contact surface dissipates the vibration energy of blade, reduces blade vibration stress, thereby improves the life-span and the operational fail safe nature of blade.
In the existing production process of the shroud ring, a series of holes are needed to be cut around the shroud ring, the holes are irregular holes with a certain angle, the existing processing mode is laser cutting, but the laser cutting is adopted, the conditions that the cutting surface is rough, burrs exist, adverse effects are caused to the physicochemical properties of metal materials of the shroud ring by high temperature and the like are caused, the problem that processing cannot be basically realized on the larger or thicker shroud ring is solved, meanwhile, in the process of laser cutting, only parts can be processed in a lying mode, and a laser head needs to move in the horizontal direction and adjust the angle, so that the processing is complicated.
The cost of the wire cutting technology is low, the processing technology is mature, and the tooling and the method are designed so that the wire cutting can complete the processing of the shroud ring.
Disclosure of Invention
1. (technical problem to be solved)
In order to overcome the defects, the inventor of the invention continuously reforms and innovates through long-term exploring attempts and repeated experiments and efforts, and provides a wire cutting machining method of a shroud ring, which is matched with a fixture to fix the shroud ring to be machined, so that the machining method can be used for vertical machining, is suitable for machining in a wire cutting mode, and has the advantages of low machining cost, less burrs and no influence on the quality of the flavor due to high temperature. The detection gap is formed, whether the workpiece is installed in place can be rapidly judged by inserting the detection card, the workpiece mounting ring with the indexing holes is provided with the positioning groove on the mounting plate, rapid positioning is realized by matching with the positioning pin, and rapid positioning of machining of holes on the periphery of the shroud is ensured.
The technical scheme adopted by the invention for achieving the purpose is as follows: the utility model provides a shroud line cutting processing method, it is based on shroud processing location frock go on, its step includes:
s1, welding a to-be-processed shroud ring on a workpiece mounting ring to form a workpiece mounting ring whole;
s2, drilling indexing holes and shroud threading holes on the whole workpiece mounting ring to obtain a prefabricated shroud whole fixed on the workpiece mounting ring.
S3, cleaning the whole pre-processing shroud ring and a base arranged on a machine tool, and checking the state of the base;
s4, integrally placing the prefabricated shroud ring on the bearing blocks, adjusting the workpiece mounting ring to be in close contact with inclined planes of the two bearing blocks, adjusting the angle of the workpiece mounting ring to align any indexing hole with the positioning groove, and carrying out assistance and inspection through the positioning pin;
s5, fixing the whole pre-processing shroud ring by using a compression block;
s6, after the fixing is finished, detecting whether the installation is qualified or not by using a detection card to pass through a detection gap, if the installation is unqualified, reinstalling according to the steps of S3-S5, and if the installation is qualified, entering the next working procedure;
s7, penetrating a cutting wire used for wire cutting through a threading hole of the pre-processing shroud ring, and performing processing operation;
s8, rotating the workpiece mounting ring to an angle to align the next indexing hole with the positioning groove, performing assistance and inspection through the positioning pin, and repeating the operation of S7 to finish machining;
and S9, repeating the step S8, and finishing linear cutting processing of all hole sites of the pre-processed shroud.
According to the invention, the further preferable technical scheme is as follows: the whole workpiece mounting ring in the step S1 is drilled with threading holes around the circumference of the shroud ring and indexing holes on the workpiece mounting ring through a machining center, and the positions of the threading holes and the indexing holes on the workpiece mounting ring are correspondingly machined.
According to the invention, the further preferable technical scheme is as follows: the items for checking the state of the base in S3 comprise whether the base specification is matched with the workpiece mounting ring, whether the base mounting meets the requirement, whether the base is damaged, whether the base is clean to meet the requirement, and whether the screw of the compressing block of the base is unscrewed so as to be convenient to mount.
According to the invention, the further preferable technical scheme is as follows: in the step S4, the diameter of the indexing hole and the width of the positioning groove are equal to the diameter of the positioning pin, and the positioning pin passes through the positioning groove and the indexing hole at the same time to indicate accurate positioning.
According to the invention, the further preferable technical scheme is as follows: and in the step S4, the fitting degree of the back part of the workpiece mounting ring and the mounting plate of the base is detected, and the gap is smaller than 0.03mm during fitting.
According to the invention, the further preferable technical scheme is as follows: when the pressing blocks are used for fixing the whole workpiece mounting ring in the step S5, the two pressing blocks at the lower end and the two pressing blocks in the middle of the upper end are pre-screwed, then the other four pressing blocks at the upper end are pre-screwed from the middle to the outer side, and finally the whole workpiece mounting ring is completely screwed according to the same sequence.
According to the invention, the further preferable technical scheme is as follows: step S6, a detection card is inserted into the detection gap, and the detection card cannot pass through the gap between the bearing block and the workpiece mounting ring, so that the workpiece mounting ring and the bearing block are precisely attached and mounted in place; if a gap exists between the representative workpiece mounting ring and the receiving block, the mounting position is incorrect, and the mounting needs to be reinstalled.
According to the invention, the further preferable technical scheme is as follows: the thickness of the detection card is 0.02mm.
According to the invention, the further preferable technical scheme is as follows: the cutting wire is required to be parallel to the mounting plate of the base in step S7.
According to the invention, the further preferable technical scheme is as follows: the finished shroud is inspected and then deburred.
Compared with the prior art, the technical scheme of the invention has the following advantages/beneficial effects:
1. the shroud ring to be processed is fixed by the matched tool, so that the shroud ring can be vertically processed, is suitable for being processed in a linear cutting mode, and has the advantages of low processing cost, less burrs and no influence on the quality of the taste due to high temperature.
2. The detection gap is formed, whether the workpiece is installed in place can be rapidly judged by inserting the detection card, the workpiece mounting ring with the indexing holes is provided with the positioning groove on the mounting plate, rapid positioning is realized by matching with the positioning pin, and rapid positioning of machining of holes on the periphery of the shroud is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a machining positioning tool of the present invention.
Fig. 2 is a partial enlarged view at a in fig. 1.
Fig. 3 is a schematic structural view of a base portion of the tooling positioning tool of the present invention.
Fig. 4 is a partial enlarged view at B in fig. 3.
Fig. 5 is a partial enlarged view at C in fig. 3.
Fig. 6 is a rear view of fig. 3.
Fig. 7 is a schematic structural view of a workpiece mounting ring portion of the tooling of the present invention.
The marks in the figure are respectively: 1. base 101, bottom plate 102, mounting plate 103, support plate 2, workpiece mounting ring 201, welding block 202, disk 203, indexing hole 3, bearing block 4, compression block 401, screw mounting groove 402, socket head cap screw 5, positioning groove 6, positioning pin 7, detection gap 8, shroud.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Accordingly, the detailed description of the embodiments of the invention provided below is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in the following figures.
Examples:
the wire cutting machining method of the shroud ring is based on a shroud ring machining positioning tool, and comprises the following steps:
s1, welding a to-be-processed shroud ring on a workpiece mounting ring 2 to form a workpiece mounting ring 2 whole;
s2, drilling the indexing holes 203 and the shroud threading holes on the whole workpiece mounting ring 2 to obtain a prefabricated shroud whole fixed on the workpiece mounting ring 2.
S3, cleaning the whole pre-processing shroud and the base 1 arranged on the machine tool, and checking the state of the base 1;
s4, integrally placing the prefabricated shroud ring on the bearing blocks 3, adjusting the workpiece mounting ring 2 to be in close contact with inclined planes of the two bearing blocks 3, adjusting the angle of the workpiece mounting ring 2 to align any indexing hole 203 with the positioning groove 5, and carrying out assistance and inspection through the positioning pin 6;
s5, fixing the whole pre-processed shroud ring by using a compression block 4;
s6, after the fixing is finished, detecting whether the installation is qualified or not by using a detection card to pass through the detection gap 7, if the installation is unqualified, reinstalling according to the steps of S3-S5, and if the installation is qualified, entering the next working procedure;
s7, penetrating a cutting wire used for wire cutting through a threading hole of the pre-processing shroud ring, and performing processing operation;
s8, rotating the workpiece mounting ring 2 to an angle so that the next indexing hole 203 is aligned with the positioning groove 5, performing assistance and inspection through the positioning pin 6, and repeating the operation of S7 to finish machining;
and S9, repeating the step S8, and finishing linear cutting processing of all hole sites of the pre-processed shroud.
The whole workpiece mounting ring 2 in the step S1 is drilled with threading holes around the circumference of the shroud ring and indexing holes 203 positioned on the workpiece mounting ring 2 through a machining center, the positions of the threading holes and the positions of the indexing holes 203 positioned on the workpiece mounting ring 2 are correspondingly machined, so that each indexing hole 203 corresponds to one threading hole, wire cutting is performed according to a preset program during machining after the positions of the threading holes are determined, the obtained holes are just determined, the positioning of the holes to be machined is accurate, the method is convenient and fast, the cost is low, and waste products are not easy to generate.
The items for checking the state of the base 1 in S3 include whether the base 1 is matched with the workpiece mounting ring 2, whether the base 1 is mounted to meet the requirement, whether the base 1 is damaged, whether the base 1 is cleaned to meet the requirement, whether the screw of the compression block 4 of the base 1 is unscrewed to facilitate the mounting, and of course, other detailed checks are also available, such as whether each part is well matched to operate, and the like, and are not expressed one by one.
The diameter of the indexing hole 203 and the width of the positioning groove 5 in the step S4 are equal to the diameter of the positioning pin 6, and the positioning pin 6 passes through the positioning groove 5 and the indexing hole 203 at the same time to indicate accurate positioning.
In step S4, the degree of fitting between the back of the workpiece mounting ring 2 and the mounting plate 102 of the base 1 is detected, the gap is smaller than 0.03mm during fitting, the workpiece can be vertically machined after complete fitting, good positioning is achieved, and the precision and quality of machined finished products are guaranteed.
In step S5, when the pressing blocks 4 fix the whole workpiece mounting ring 2, the two pressing blocks 4 at the lower end and the two pressing blocks 4 in the middle of the upper end are pre-screwed firstly, then the other four pressing blocks 4 at the upper end are pre-screwed outwards from the middle, finally the whole workpiece mounting ring is fully screwed according to the same sequence, the pressing follows the modes of firstly middle and secondly two sides, and the mode of firstly light and secondly heavy is adopted, so that the screw stress is basically consistent while the fixation is firm, and the condition that the screwing of a certain screw is too tight or too loose can not occur.
Step S6, a detection card is inserted into the detection gap 7, and the detection card cannot pass through the gap between the bearing block 3 and the workpiece mounting ring 2, so that the workpiece mounting ring 2 and the bearing block 3 are precisely attached and mounted in place; if a gap is available between the representative workpiece mounting ring 2 and the socket 3, this indicates that the mounting position is incorrect and that reinstallation is required. The thickness of the detection card is 0.02mm, and the thickness of the detection card can be correspondingly changed according to actual production requirements.
In step S7, the cutting wire is required to be parallel to the mounting plate 102 of the base 1, and the mounting plate 102 of the base 1 is perpendicular to the horizontal plane during processing, i.e. the cutting wire is also perpendicular to the horizontal plane, so that the cutting wire can be more conveniently operated in practical production.
Checking the machined shroud ring, then removing burrs, checking whether the machined shroud ring is separated from the mounting block, checking whether the machined shroud ring meets the size requirement, removing burrs and the like.
The shroud ring processing and positioning tool applicable to the invention is described in detail below. As shown in fig. 1-7, the shroud ring processing positioning tool comprises a base 1 and a workpiece mounting ring 2, wherein the base 1 is fixed on a machine tool, a bearing block 3 is arranged at the lower part of a mounting plate 102 of the base 1, compression blocks 4 are arranged at the lower part and the upper part of the mounting plate 102, the workpiece mounting ring 2 is vertically placed on the bearing block 3, the compression blocks 4 fix the workpiece mounting ring 2, an indexing hole 203 is formed in the workpiece mounting ring 2, a positioning groove 5 is formed in the mounting plate 102, and a positioning pin 6 simultaneously penetrates through the positioning groove 5 and the indexing hole 203 to realize positioning. The positioning slot 5 is a vertically arranged slot, the width of which is equal to the diameter of the positioning pin 6, the diameter of the indexing hole 203 should be equal to the diameter of the positioning pin 6, the diameter of the positioning pin 6 is not equal to the diameter of the positioning pin, and the diameter of the positioning pin 6 should be slightly smaller than the width/diameter of the positioning slot 5 and the indexing hole 203 in order to facilitate the insertion of the positioning slot 5 and the indexing hole 203, but the requirement of error needs to be met after the positioning is performed. The length of the positioning groove is set according to the condition of the workpiece mounting ring 2 which can be adapted to the fixture, that is, the workpiece mounting ring 2 within a certain range can use the same fixture, and the positioning groove 5 is arranged in a long strip shape to adapt to the up-and-down movement of the indexing hole 203 within a certain range.
The workpiece mounting ring 2 comprises a welding block 201 and a disc 202, the disc 202 is annular, the thickness of the inner side is reduced to form a step, the indexing holes 203 are circularly arranged on the thinner inner side step, the circle center is consistent with that of the disc 202, the welding block 201 is circularly arranged on the thicker outer side step, and the welding block 201 is preferably arranged close to the outer side, the size of the workpiece mounting ring 2 and the number of the welding blocks 201 are determined according to the size of the shroud ring 8, and meanwhile, when the workpiece is welded on the welding block 201, the accuracy of positions is required to be ensured, and the consistency of the circle centers of the shroud ring 8, the workpiece mounting ring 2 and the circularly distributed indexing holes 203 is required to be ensured. Grooves are formed in all the welding blocks 201 at the positions where the welding blocks are in contact with the shroud ring 8, so that the shroud ring 8 can be conveniently positioned.
The base 1 comprises a bottom plate 101, a mounting plate 102 and a supporting plate 103, wherein the mounting plate 102 is mounted on the bottom plate 101, the supporting plate 103 is arranged on the back surface of the mounting plate 102, the supporting plate 103 is simultaneously connected with the mounting plate 102 and the bottom plate 101, the supporting plate 103 only plays a role in stabilizing, other corresponding structures can be realized, and the structure is not a fixed structure, so long as the processing and the mounting are not influenced.
The mounting plate 102 is vertically arranged on the bottom plate 101, the upper portion of the mounting plate 102 is provided with an arc notch corresponding to the inner side of the workpiece mounting ring 2, the vertical installation of the mounting plate 102 is convenient for wire cutting to process, the positioning is also convenient, and the arc notch on the upper portion can ensure that shielding can not be formed during processing.
The lower compression blocks 4 are arranged at the outer sides of the workpiece mounting rings 2, the number of the compression blocks is two, and the compression blocks are arranged at the inner sides of the bearing blocks 3; the plurality of compaction blocks 4 on the upper part are arranged in an arc shape, correspond to the radian of the inner side of the workpiece mounting ring 2, are five in number and are arranged in an annular shape at uniform intervals. The lower compression block 4 compresses the outer edge of the workpiece mounting ring 2, and the upper compression block 4 compresses the inner edge of the workpiece mounting ring 2, so that the disc 202 is compressed from the inner position and the outer position.
The receiving blocks 3 are square blocks with inclined upper parts, and the number of the receiving blocks is two, and the receiving blocks are symmetrically arranged on the front surface of the mounting plate 102. The receiving block 3 is in fact a structure of a V-shaped positioning groove 5 with a break in the middle, which positions and receives the workpiece mounting ring 2. The position on mounting panel 102 corresponding to the inclined plane of the upper portion of the bearing block 3 is provided with a detection gap 7, the height of the detection gap 7 is 0.2mm, the detection gap 7 is used for inserting a detection card into the detection gap 7 after the fixing of the pressing block 4 is completed, the detection card cannot pass through between the bearing block 3 and the workpiece mounting ring 2, the workpiece mounting ring 2 and the bearing block 3 are precisely attached, the mounting is accurate, and if a gap exists between the representative workpiece mounting ring 2 and the bearing block 3, the mounting position is incorrect, and the mounting is required to be reinstalled. In addition, during installation, the workpiece mounting ring 2 and the receiving block 3 are required to be clean, and the positioning and installation accuracy cannot be affected by impurities.
The compaction block 4 is L-shaped, and one shorter end of the compaction block 4 is tightly attached to the mounting plate 102. One end of the compression block 4, which is tightly attached to the mounting plate 102, is provided with an arc-shaped surface. The screw mounting groove 401 is formed in the compression block 4, and the inner hexagon screws penetrate through the mounting groove to movably mount the compression block 4 on the mounting plate 102 to compress the workpiece mounting ring 2. One end of the compacting block 4, which is tightly attached to the mounting column, is set to be an arc surface, the arc surface is convenient for certain rotation between the L-shaped compacting block 4 and the mounting column, the compacting block 4 can be smoothly adjusted, the position of the compacting block 4 can be properly adjusted due to the existence of the screw mounting groove 401, the workpiece mounting ring 2 can be conveniently placed at the clamping position, and the compacting can be quickly mounted and compacted by adjusting the position of the compacting block 4 during compacting.
The using method comprises the following steps: the method comprises the steps of welding a shroud ring to be processed and a workpiece mounting ring together, then integrally mounting the shroud ring on a base, ensuring the cleaning of the surface of a bearing block and the surface of a mounting plate during mounting, enabling the outer edge of the workpiece mounting ring to contact the upper inclined surface of the bearing block, symmetrically mounting the bearing block to form a discontinuous V-shaped groove structure, enabling the position of the workpiece mounting ring to fall at the lowest point under the action of gravity to realize positioning, rotating the workpiece mounting ring to enable any indexing hole to be aligned with a positioning groove, screwing a pressing block to realize positioning of the workpiece mounting ring, and plugging a detection gap from the back of the mounting plate by using a detection card, wherein no gap exists between the workpiece mounting ring and the bearing block after the mounting is finished by the detection card, and mounting is qualified, otherwise reinstalling and then detecting. After the cutting of the last hole is completed, the workpiece mounting ring is rotated so that the next indexing hole is aligned with the locating slot (detected and clamped using the locating pin), machining is continued, and the operation is repeated until the wire cutting of the hole used is completed.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the invention, and the scope of the invention should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (10)
1. The utility model provides a processing method of shroud line cutting, its characterized in that is based on shroud processing location frock, shroud processing location frock includes base, work piece collar, and the base is fixed on the lathe, is provided with the socket piece in the mounting panel lower part of base, all is provided with the compact heap in mounting panel lower part and upper portion, and work piece collar is vertical to be placed on the socket piece, and the compact heap is fixed work piece collar, is provided with the graduation hole on the work piece collar, is provided with the constant head tank on the mounting panel, and the locating pin passes constant head tank and graduation hole realization location simultaneously, has the detection gap in the position that corresponds with socket piece upper portion inclined plane on the mounting panel, and its step includes:
s1, welding a to-be-processed shroud ring on a workpiece mounting ring to form a workpiece mounting ring whole;
s2, drilling indexing holes and shroud threading holes on the whole workpiece mounting ring to obtain a prefabricated shroud whole fixed on the workpiece mounting ring;
s3, cleaning the whole pre-processing shroud ring and a base arranged on a machine tool, and checking the state of the base;
s4, integrally placing the prefabricated shroud ring on the bearing blocks, adjusting the workpiece mounting ring to be in close contact with inclined planes of the two bearing blocks, adjusting the angle of the workpiece mounting ring to align any indexing hole with the positioning groove, and carrying out assistance and inspection through the positioning pin;
s5, fixing the whole pre-processing shroud ring by using a compression block;
s6, after the fixing is finished, detecting whether the installation is qualified or not by using a detection card to pass through a detection gap, if the installation is unqualified, reinstalling according to the steps of S3-S5, and if the installation is qualified, entering the next working procedure;
s7, penetrating a cutting wire used for wire cutting through a threading hole of the pre-processing shroud ring, and performing processing operation;
s8, rotating the workpiece mounting ring to an angle to align the next indexing hole with the positioning groove, performing assistance and inspection through the positioning pin, and repeating the operation of S7 to finish machining;
and S9, repeating the step S8, and finishing linear cutting processing of all hole sites of the pre-processed shroud.
2. The wire cutting machining method of the shroud ring according to claim 1, wherein the whole workpiece mounting ring in the step S1 is drilled with a threading hole around the circumference of the shroud ring and an indexing hole on the workpiece mounting ring through a machining center, and the threading hole and the indexing hole on the workpiece mounting ring are machined correspondingly.
3. The method of claim 1, wherein the step of checking the status of the base in step S3 includes whether the base specification matches the workpiece mounting ring, whether the base is mounted to a desired location, whether the base is damaged, whether the base is cleaned to a desired location, and whether screws of a compression block of the base are loosened to facilitate installation.
4. The method of claim 1, wherein the diameter of the indexing hole and the width of the positioning slot in step S4 are equal to the diameter of the positioning pin, and the positioning pin passes through the positioning slot and the indexing hole simultaneously to indicate accurate positioning.
5. The method of claim 1, wherein in step S4, the method further comprises detecting the degree of adhesion between the back of the workpiece mounting ring and the mounting plate of the base, and the gap is less than 0.03mm when the workpiece mounting ring is adhered.
6. The wire cutting machining method of the shroud ring according to claim 1, wherein when the clamping blocks fix the whole workpiece mounting ring in step S5, the lower two clamping blocks and the upper middle two clamping blocks are pre-tightened, then the remaining four clamping blocks at the upper end are pre-tightened from the middle to the outer side, and finally the complete tightening is performed according to the same sequence.
7. The method of claim 1, wherein step S6 is specifically performed to insert a test card into the test slot, the test card failing to pass between the receiving block and the workpiece mounting ring, indicating that the workpiece mounting ring is precisely attached to the receiving block and is mounted in place; if a gap exists between the representative workpiece mounting ring and the receiving block, the mounting position is incorrect, and the mounting needs to be reinstalled.
8. The method of wire cutting a shroud of claim 7, wherein the test card has a thickness of 0.02mm.
9. A method of wire cutting a shroud as claimed in claim 1 wherein the cutting wire in step S7 is required to be parallel to the mounting plate of the base.
10. A method of wire cutting a shroud as claimed in claim 1, wherein the finished shroud is inspected and then deburred.
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