CN112496469A - Clamp mechanism for slowly feeding and grinding tenon tooth of turbine blade - Google Patents
Clamp mechanism for slowly feeding and grinding tenon tooth of turbine blade Download PDFInfo
- Publication number
- CN112496469A CN112496469A CN202011298259.0A CN202011298259A CN112496469A CN 112496469 A CN112496469 A CN 112496469A CN 202011298259 A CN202011298259 A CN 202011298259A CN 112496469 A CN112496469 A CN 112496469A
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- positioning
- pressure
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- blade
- cover plate
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- 238000000034 method Methods 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims description 30
- 238000007906 compression Methods 0.000 claims description 30
- 238000003466 welding Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 230000000750 progressive effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
-
- 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
Abstract
The invention discloses a fixture mechanism for slowly feeding and grinding tenon teeth of a turbine blade, wherein a supporting block, a blade body positioning block, a side positioning block and a shaft positioning pin are positioning points, are fixed on a main body and are used for realizing the positioning of the bottom surface, the side surface and the axial direction of the blade; the pressure lever is connected on the cover plate through a pin shaft; the front pressure head and the rear pressure head are connected to the two ends of the pressure lever through pin shafts; the cover plate, the pressure lever, the front pressure head and the rear pressure head form a whole and are arranged on the main body; the front pressure lever and the rear pressure lever are connected with the pressure lever body through a pin shaft; the side pressure head is connected with the front pressure rod, and the tail pressure head is connected with the rear pressure rod to form a side pressure plate assembly with a lever structure; the left guide plate and the right guide plate are respectively fixed in the grooves at the front ends of the two bosses of the main body; the main part bottom is equipped with quick positioning groove for be connected with the machine tool. The tool provided by the invention has a very good effect through field application. The clamp structure has the advantages of convenience, accuracy and stability in clamping, and has important significance for optimizing and improving the process route.
Description
Technical Field
The invention relates to the technical field of disc part decomposition, in particular to a fixture mechanism for slowly feeding and grinding tenon teeth of a turbine blade.
Background
In the manufacturing process of the turbine blade of the aero-engine, the blade is low in machining yield due to the fact that the profile of the blade is complex and the shape of the blade is small, and the manufacturing technology of the engine is difficult. The tenon tooth processing as the first manufacturing procedure is particularly important and difficult, the tenon tooth must be processed by a stable and reliable special fixture, and the quality of the fixture structure directly influences the subsequent manufacturing process and the qualification rate of the whole blade. Because the fixture is difficult to position and clamp when the tenon tooth is slowly ground, the structure is difficult to realize, and the traditional structure has the problems of inaccurate positioning, infirm pressing and difficult installation and alignment.
Disclosure of Invention
In order to solve the technical problem, the specific technical scheme of the fixture mechanism for slowly feeding the grinding tenon tooth of the turbine blade is as follows:
a fixture mechanism for slowly feeding and grinding tenon teeth of a turbine blade comprises a main body, a supporting block, a cover plate, a pressure rod, a front pressure head, a rear pressure head, a side positioning seat, a blade body positioning block, a tail positioning seat, a process ball pin, a pressure rod body, a front pressure rod, a rear pressure rod, a side pressure head, a tail block, a pin shaft, a right guide plate, a left guide plate, a side positioning block, a shaft positioning pin, a compression spring and a compression screw;
the supporting blocks, the blade body positioning blocks, the side positioning blocks and the shaft positioning pins are positioning points, are fixed on the main body and are used for realizing the positioning of the bottom surface, the side surface and the axial direction of the blade;
the main body is provided with two bosses, and a cavity is formed in the middle of the main body;
the supporting block is arranged in a cavity defined by the boss, the side positioning block is arranged on one side of the supporting block, and the blade body positioning block is arranged on the rear side of the supporting block;
the cover plate is provided with a plurality of mounting holes and mounting openings, the pressure rod is clamped in the mounting openings, and a compression spring is arranged between the pressure rod and the cover plate; the two are connected on the cover plate through a pin shaft, so that the front and rear height compression balance can be realized;
the front pressure head and the rear pressure head are connected to two ends of the pressure rod through pin shafts, so that rotation adjustment within a small range can be realized, and uniform stress is realized;
the cover plate, the pressure rod, the front pressure head and the rear pressure head form a whole, one end of the cover plate is connected with the boss of the main body through a pin shaft, and the other end of the cover plate is connected with the boss on the main body through a thread pressing pressure plate, so that the front end and the rear end of the upper side of the blade are pressed;
the front pressure lever and the rear pressure lever are connected with the pressure lever body through a pin shaft; the side pressure head is connected with the front pressure rod, and the tail pressure head is connected with the rear pressure rod to form a side pressure plate assembly with a lever structure;
the side pressure plate assembly is arranged on the inner side of a boss on one side of the main body, and the lower end of the cover plate; the star-shaped handle is connected with the compression screws, penetrates through the bosses and is connected with the side pressure plate assembly, and the compression of the front side surface and the rear side surface of the blade is realized by respectively screwing two compression screws;
the left guide plate and the right guide plate are respectively fixed on the two bosses of the main body;
the tail positioning seat is fixed at the rear end of the boss on the left side of the main body;
the tail block is fixed in the middle of the rear sides of the two bosses of the main body, and the star-shaped handle is connected with a compression screw and fixed on the blade sawtooth crown by penetrating through the tail seat;
the process ball and the welding handle are both arranged on the main body;
the main part bottom is equipped with quick positioning groove for be connected with the machine tool.
The fixture mechanism for slowly advancing the turbine blade to grind the tenon tooth has the preferred scheme that the main body adopts a casting structure.
The fixture mechanism for slowly advancing and grinding the tenon teeth of the turbine blade has the preferred scheme that a plurality of weight reducing openings are formed in the main body.
The clamping process of the fixture mechanism for slowly feeding the turbine blade to grind the tenon tooth comprises the following steps:
(1) placing the blade on a corresponding position of a clamp, ensuring that each positioning point on the blade body is in contact with a supporting block, a blade body positioning block, a side positioning block and a shaft positioning pin, determining the position of the blade, and ensuring six-point positioning of the blade body;
(3) then, the cover plate is rotated through a pin shaft to tightly press the tabletting edge plate and the tail part of the blade body, and then the front pressure rod and the rear pressure rod are tightly pressed on the edge plate at the front end side of the blade and the side surface of the tail part of the blade; all the pressing positions correspond to the positioning points of the blades, so that the pressing effect is ensured;
(4) the whole clamp realizes the positioning and clamping of the part at the front end, the middle part and the tail part, the positioning is accurate, the clamping is convenient, the clamp is safe and reliable, and the rigidity of the part is greatly improved.
The invention has the beneficial effects that: the invention has reasonable and reliable integral structure, adopts brand new design and optimization in the aspects of main body, positioning, compaction and the like:
(1) the clamp main body adopts an integral casting structure, so that the structural stability is ensured, and the structural compactness is ensured;
(2) the positioning mode fully utilizes the six-point positioning principle of the fixture, 6 positioning blocks are designed to correspond to 6 positioning points of the blade, all degrees of freedom of the blade are restrained, and precise six-point positioning of the blade is realized;
(3) in the aspect of compression, the compression between the blade edge plate and the tail part of the blade body adopts a mode of a hinge pressure plate to simultaneously compress, so that the phenomenon that the air entraining blade is twisted due to uneven force application is avoided; the side surface of the blade is compressed by adopting the lever mechanism principle, so that the pressing force is enhanced, and the cutting force from equipment in the machining process is counteracted.
The fixture has the advantages that the fixture achieves a very good effect through field application, the fixture structure has the advantages of convenience, accuracy and stability in clamping, the processing stability is greatly improved, and the blade tenon tooth grinding qualification rate is kept at 100%; the operation difficulty is reduced, and the processing and adjusting time is reduced to 50 percent of the prior time. Has important significance for optimizing and improving the process route.
Drawings
FIG. 1 is a top view of a fixture mechanism for a turbine blade creep-in tenon tooth;
FIG. 2 is a front view of a fixture mechanism for a turbine blade creep-in tenon tooth;
FIG. 3 is a cross-sectional view taken at C-C of FIG. 1;
fig. 4 is a sectional view taken along line B-B in fig. 1.
In the figure, 1 a main body; 2, supporting a block; 3, covering a plate; 4, pressing a rod; 5, a front pressure head; 6, pressing a head; 7 side positioning seats; 8 leaf positioning blocks; 9 tail positioning seats; 10, a process ball pin; 11 pressing the rod body; 12 a front press rod; 13 rear press rod; a 14-side ram; 15 tail pressure heads; 16 tail blocks; 17, a pin shaft; 18 a right baffle; 19 a left baffle; 20 side positioning blocks; 21-axis positioning pins; 29 compression spring; 37 hold down the screw; 38 a star handle; 39 welding the handle; 40 quickly positioning the clamping groove.
Detailed Description
As shown in fig. 1-4, a fixture mechanism for a turbine blade slow-advance tenon tooth grinding includes a main body 1, a support block 2, a cover plate 3, a pressure lever 4, a front pressure lever 5, a rear pressure lever 6, a side positioning seat 7, a blade body positioning block 8, a tail positioning seat 9, a process ball pin 10, a pressure lever body 11, a front pressure lever 12, a rear pressure lever 13, a side pressure lever 14, a tail pressure lever 15, a tail block 16, a pin shaft 17, a right guide plate 18, a left guide plate 19, a side positioning block 20, a shaft positioning pin 21, a compression spring 29 and a compression screw 37;
the supporting block 2, the blade body positioning block 8, the side positioning block 20 and the shaft positioning pin 21 are positioning points, and are fixed on the main body 1 and used for realizing the positioning of the bottom surface, the side surface and the axial direction of the blade;
two bosses are arranged on the main body 1, and a cavity is formed in the middle of the main body;
the supporting block 2 is arranged in a cavity defined by the boss, the side positioning block 7 is arranged on one side of the supporting block 2, and the blade body positioning block 8 is arranged on the rear side of the supporting block 7;
the cover plate 3 is provided with a plurality of mounting holes and mounting openings, the pressure rod 4 is clamped in the mounting openings, the cover plate is provided with a plurality of mounting holes and mounting openings, the pressure rod is clamped in the mounting openings, and a compression spring 29 is arranged between the pressure rod 4 and the cover plate 3; the two are connected on the cover plate through a pin shaft, so that the front and rear height compression balance can be realized; the compression spring 29 prevents the compression rod 4 from moving and damaging the blade;
the front and rear heights can be pressed and balanced by connecting the hinge pin 17 with the cover plate 3;
the front pressure head 5 and the rear pressure head 6 are connected to two ends of the pressure lever 4 through pin shafts, so that rotation adjustment within a small range can be realized, and uniform stress is realized;
the cover plate 3, the pressure rod 4, the front pressure head 5 and the rear pressure head 6 form a whole, one end of the cover plate 3 is connected with a boss of the main body 1 through a pin shaft, and the other end of the cover plate is connected with the boss on the main body 1 through the thread pressing pressure plate 4, so that the front end and the rear end of the upper side of the blade are pressed;
the front pressure lever 12 and the rear pressure lever 13 are connected with the pressure lever body 11 through a pin shaft; the side pressure head 14 is connected with the front pressure rod 12, and the tail pressure head 15 is connected with the rear pressure rod 13 to form a side pressure plate assembly with a lever structure;
the side pressure plate assembly is arranged at the inner side of a boss at one side of the main body 1 and at the lower end of the cover plate 3; the star-shaped handle 38 is connected with the compression screws 37, penetrates through the bosses and is connected with the side pressure plate assembly, and the compression of the front side surface and the rear side surface of the blade is realized by screwing the two compression screws 37 respectively;
the left guide plate 19 and the right guide plate 18 are respectively fixed on two bosses of the main body 1;
the tail positioning seat 9 is fixed at the rear end of a boss on the left side of the main body 1;
the tail block 16 is fixed in the middle of the rear sides of the two bosses of the main body 1, and the star-shaped handle 38 is connected with a compression screw 37 and penetrates through the tail block 16 to be propped against the sawtooth crowns of the blades;
the craft ball 10 and the welding handle 39 are both arranged on the main body;
the bottom end of the main body 1 is provided with a quick positioning clamping groove 40 for being connected with a processing machine tool.
The main body 1 is of a cast structure.
The body 1 is provided with a plurality of weight-reducing ports.
The clamping process of the fixture mechanism for slowly feeding the turbine blade to grind the tenon tooth comprises the following steps:
(1) placing the blade on a corresponding position of a clamp, ensuring that each positioning point on the blade body is in contact with a supporting block, a blade body positioning block, a side positioning block and a shaft positioning pin, determining the position of the blade, and ensuring six-point positioning of the blade body;
(3) then, the cover plate is rotated through a pin shaft to tightly press the tabletting edge plate and the tail part of the blade body, and then the front pressure rod and the rear pressure rod are tightly pressed on the edge plate at the front end side of the blade and the side surface of the tail part of the blade; all the pressing positions correspond to the positioning points of the blades, so that the pressing effect is ensured;
(4) the whole clamp realizes the positioning and clamping of the part at the front end, the middle part and the tail part, the positioning is accurate, the clamping is convenient, the clamp is safe and reliable, and the rigidity of the part is greatly improved.
Claims (3)
1. A fixture mechanism for slowly feeding and grinding tenon teeth of a turbine blade is characterized by comprising a main body, a supporting block, a cover plate, a pressure rod, a front pressure head, a rear pressure head, a side positioning seat, a blade body positioning block, a tail positioning seat, a process ball pin, a pressure rod body, a front pressure rod, a rear pressure rod, a side pressure head, a tail block, a pin shaft, a right guide plate, a left guide plate, a side positioning block, a shaft positioning pin, a compression spring and a compression screw;
the supporting blocks, the blade body positioning blocks, the side positioning blocks and the shaft positioning pins are positioning points, are fixed on the main body and are used for realizing the positioning of the bottom surface, the side surface and the axial direction of the blade;
the main body is provided with two bosses, and a cavity is formed in the middle of the main body;
the supporting block is arranged in a cavity defined by the boss, the side positioning block is arranged on one side of the supporting block, and the blade body positioning block is arranged on the rear side of the supporting block;
the cover plate is provided with a plurality of mounting holes and mounting openings, the pressure rod is clamped in the mounting openings, and a compression spring is arranged between the pressure rod and the cover plate; the two are connected on the cover plate through a pin shaft, so that the front and rear height compression balance can be realized;
the front pressure head and the rear pressure head are connected to two ends of the pressure rod through pin shafts, so that rotation adjustment within a small range can be realized, and uniform stress is realized;
the cover plate, the pressure rod, the front pressure head and the rear pressure head form a whole, one end of the cover plate is connected with a boss of the main body through a pin shaft, and the other end of the cover plate is hinged with the boss on the main body through a movable joint bolt and a nut to compress the cover plate, so that the compression of the front end and the rear end of the upper side of the blade is realized;
the front pressure lever and the rear pressure lever are connected with the pressure lever body through a pin shaft; the side pressure head is connected with the front pressure rod, and the tail pressure head is connected with the rear pressure rod to form a side pressure plate assembly with a lever structure;
the side pressure plate assembly is arranged on the inner side of a boss on one side of the main body, and the lower end of the cover plate; the star-shaped handle is connected with the compression screws, penetrates through the bosses and is connected with the side pressure plate assembly, and the compression of the front side surface and the rear side surface of the blade is realized by respectively screwing two compression screws;
the left guide plate and the right guide plate are respectively fixed in the grooves at the front ends of the two bosses of the main body;
the tail positioning seat is fixed at the rear end of the boss on the left side of the main body;
the tail block is fixed in the middle of the rear sides of the two bosses of the main body, and the star-shaped handle is connected with a compression screw and fixed on the blade sawtooth crown by penetrating through the tail seat;
the process ball and the welding handle are both arranged on the main body;
the main part bottom is equipped with quick positioning groove for be connected with the machine tool.
2. The turbine blade creep-in tenon tooth holder mechanism of claim 1 wherein said body is of cast construction.
3. The turbine blade progressive cogging fixture mechanism of claim 1 wherein said body defines a plurality of lightening openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298259.0A CN112496469A (en) | 2020-11-19 | 2020-11-19 | Clamp mechanism for slowly feeding and grinding tenon tooth of turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298259.0A CN112496469A (en) | 2020-11-19 | 2020-11-19 | Clamp mechanism for slowly feeding and grinding tenon tooth of turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112496469A true CN112496469A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011298259.0A Pending CN112496469A (en) | 2020-11-19 | 2020-11-19 | Clamp mechanism for slowly feeding and grinding tenon tooth of turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112496469A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227462A (en) * | 2021-12-15 | 2022-03-25 | 贵阳航发精密铸造有限公司 | Turbine blade dihedral angle chord width machining device and machining method |
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| CN103878608A (en) * | 2014-01-30 | 2014-06-25 | 无锡透平叶片有限公司 | Clamp used for processing aviation thin-wall blade pitch |
| CN205111343U (en) * | 2015-11-20 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Six accurate point location anchor clamps structures in blade |
| CN106181468A (en) * | 2016-07-27 | 2016-12-07 | 西北工业大学 | A kind of finish forge blade tenon root and front and rear edge clamp for machining |
| CN109539928A (en) * | 2018-11-27 | 2019-03-29 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of fan-shaped section welding blade cavity digital measuring device and measurement method |
| CN109531198A (en) * | 2018-11-27 | 2019-03-29 | 中国航发沈阳黎明航空发动机有限责任公司 | Improve the method and process area refine fixture of large and complex structure blade processing precision |
| CN110834081A (en) * | 2019-11-26 | 2020-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | Multipurpose linear cutting clamp for single crystal blade with crown and cutting method thereof |
-
2020
- 2020-11-19 CN CN202011298259.0A patent/CN112496469A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878608A (en) * | 2014-01-30 | 2014-06-25 | 无锡透平叶片有限公司 | Clamp used for processing aviation thin-wall blade pitch |
| CN205111343U (en) * | 2015-11-20 | 2016-03-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Six accurate point location anchor clamps structures in blade |
| CN106181468A (en) * | 2016-07-27 | 2016-12-07 | 西北工业大学 | A kind of finish forge blade tenon root and front and rear edge clamp for machining |
| CN109539928A (en) * | 2018-11-27 | 2019-03-29 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of fan-shaped section welding blade cavity digital measuring device and measurement method |
| CN109531198A (en) * | 2018-11-27 | 2019-03-29 | 中国航发沈阳黎明航空发动机有限责任公司 | Improve the method and process area refine fixture of large and complex structure blade processing precision |
| CN110834081A (en) * | 2019-11-26 | 2020-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | Multipurpose linear cutting clamp for single crystal blade with crown and cutting method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114227462A (en) * | 2021-12-15 | 2022-03-25 | 贵阳航发精密铸造有限公司 | Turbine blade dihedral angle chord width machining device and machining method |
| CN114227462B (en) * | 2021-12-15 | 2024-04-09 | 贵阳航发精密铸造有限公司 | Device and method for machining dihedral angle chord width of turbine blade |
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Application publication date: 20210316 |