CN109848743B - Clamping device for processing moving blades made of special materials of steam turbine - Google Patents
Clamping device for processing moving blades made of special materials of steam turbine Download PDFInfo
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- CN109848743B CN109848743B CN201910303980.5A CN201910303980A CN109848743B CN 109848743 B CN109848743 B CN 109848743B CN 201910303980 A CN201910303980 A CN 201910303980A CN 109848743 B CN109848743 B CN 109848743B
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Abstract
A clamping device for processing a moving blade made of a special material of a steam turbine relates to the technical field of machining. In order to solve the problems that the existing clamping device cannot meet the machining conditions of four-axis machining, if the tolerance range of a positioning hole is enabled to be within +/-0.03 mm, the procedures are increased, the machining errors are increased due to repeated clamping, and the machining period is long. Four T-shaped connectors are uniformly arranged at the circumferential edge of the upper surface of the disc of the base, and a connecting disc is arranged on the lower surface of the base; the two ends of the upper surface of the fixing seat are respectively provided with a guide rail, a pair of vices which are matched with each other are in sliding fit with the fixing seat through the guide rails, one end of one of the vices of the pair of vices is fixedly connected with the positioning block, a T-shaped groove is formed in the inner wall of the pair of vices along the length direction, the centering shaft is in threaded connection with the pair of vices, the opposite surfaces of the pair of vices are respectively fixedly connected with a baffle, a strip-shaped groove is formed in the center of the upper surface of the fixing seat, and a threaded hole is formed in the center of the strip-shaped key. The invention is suitable for the fixture for clamping the processed blade.
Description
Technical Field
The invention relates to the technical field of machining.
Background
In machining, the product size is required to be consistent, the working procedure and the clamping frequency are reduced, error accumulation can be effectively avoided, the working procedure can be reduced, the machining period is shortened, and the machining cost is reduced. The novel high-temperature high-pressure alloy is encountered in numerical control milling practice processing, a positioning hole at the front end of a workpiece cannot be processed, and due to the fact that a numerical control four-axis machine tool is inconsistent with a numerical control five-axis machine tool in selecting a clamp, the five-axis machine tool is a German LANG disc clamp, the clamping mode is limited greatly, and two positioning holes, an upper clamping plane and a lower clamping plane, are required to be met before and after end face processing during clamping. The processing method comprises the following steps: the former locating hole is used for locating, the upper vice and the lower vice clamp two clamping planes, and the locating hole is tightly propped up to finish clamping.
In summary, the prior art has two main disadvantages:
1. the four-axis machine tool cannot meet the processing conditions.
2. The tolerance range of the positioning hole is +/-0.03 mm, the machining difficulty is high, the working procedures are increased if the clamping condition of the LANG disc clamp is met, and the accumulated error is increased.
Disclosure of Invention
The invention provides a clamping device for processing a moving blade made of a special material of a steam turbine, aiming at solving the problems that the existing clamping device cannot meet the processing conditions of four-axis processing, if the tolerance range of a positioning hole is within +/-0.03 mm, the working procedure is increased, the clamping is repeated, the processing error is increased and the processing period is long.
The invention relates to a clamping device for processing a moving blade made of a special material of a steam turbine, which comprises a base and a clamping mechanism;
the center of the upper surface of the base is fixedly connected with the clamping mechanism;
the base comprises a disc, a connecting pin and a connecting disc;
a first T-shaped connecting hole, a second T-shaped connecting hole, a third T-shaped connecting hole and a fourth T-shaped connecting hole are uniformly formed in the circumferential edge of the upper surface of the disc, the center of the lower surface of the disc is fixedly connected with the upper surface of the connecting disc, one end of a connecting pin is fixedly connected with the center of the lower surface of the connecting disc, and the other end of the connecting pin is connected with the center of a turntable of a four-axis machine tool;
the clamping mechanism comprises a fixed seat, a guide rail, a positioning block, a T-shaped groove and a baffle;
the two ends of the upper surface of the fixing seat are respectively provided with a guide rail, the two guide rails are symmetrically arranged, the opposite surfaces of the pair of guide rails are respectively provided with a sliding groove and are perpendicular to the fixing seat, the pair of mutually matched vices are in sliding fit with the fixing seat through the guide rails, the pair of mutually matched vices can move along the length direction of the guide rails, one end of one of the pair of vices is fixedly connected with the positioning block, T-shaped grooves are formed in the inner wall of the pair of vices along the length direction, threaded holes are respectively formed in the bottoms of the two outer surfaces of the pair of vices, one end of the centering shaft penetrates through the two threaded holes in the pair of vices, the centering shaft is in threaded connection with the pair of vices, the opposite surfaces of the pair of vices are respectively fixedly connected with the baffle, the center of the upper surface of the fixing seat is provided with a strip-shaped groove, the strip-shaped groove is perpendicular to the pair of guide rails, and the center of the strip-shaped key is provided with the threaded holes.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention overcomes the defects of the prior art, and can meet the tolerance range of +/-0.03 mm of the positioning hole during processing.
2. The invention is suitable for being used on a four-axis machine tool.
3. The invention overcomes the defects of the prior art, reduces the processing procedures, avoids repeated clamping and improves the processing precision.
4. The invention shortens the processing period for processing the special material blade of the steam turbine.
Drawings
FIG. 1 is a top view of the overall structure of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is a front view of the overall structure of the present invention;
fig. 4 is an assembled top view of the base, anchor block and guide rail of the present invention.
Detailed Description
The first embodiment is as follows: referring to fig. 1, 2 and 3, a clamping device for machining a moving blade made of a special material of a steam turbine according to the present embodiment includes a base and a clamping mechanism;
the center of the upper surface of the base is fixedly connected with the clamping mechanism;
the base comprises a disc 1, a connecting pin 11 and a connecting disc 9;
a first T-shaped connecting hole 2, a second T-shaped connecting hole 3, a third T-shaped connecting port 4 and a fourth T-shaped connecting port 7 are uniformly formed in the circumferential edge of the upper surface of the disc 1, the center of the lower surface of the disc 1 is fixedly connected with the upper surface of the connecting disc 9, one end of a connecting pin 11 is fixedly connected with the center of the lower surface of the connecting disc 9, and the other end of the connecting pin 11 is connected with the center of a turntable of a four-axis machine tool;
the clamping mechanism comprises a fixed seat 6, a guide rail 5, a positioning block 12, a T-shaped groove 13 and a baffle 14;
two ends of the upper surface of the fixing seat 6 are respectively provided with a guide rail 5, two guide rails 5 are symmetrically arranged, opposite surfaces of the pair of guide rails 5 are respectively provided with a sliding groove and are perpendicular to the fixing seat 6, a pair of mutually matched vices 8 are in sliding fit with the fixing seat 6 through the guide rails 5, the pair of mutually matched vices 8 can move along the length direction of the guide rails 5, one end of one vice 8 of the pair of vices 8 is fixedly connected with the positioning block 12, T-shaped grooves 13 are formed in the inner walls of the pair of vices 8 along the length direction, threaded holes are respectively formed in the bottoms of two outer surfaces of the pair of vices 8, one end of the centering shaft 10 penetrates through the two threaded holes of the pair of vices 8, the centering shaft 10 is in threaded connection with the pair of vices 8, opposite surfaces of the pair of vices 8 are respectively fixedly connected with the baffle 14, the center of the upper surface of the fixing seat 6 is provided with a strip-shaped groove, the strip-shaped groove is perpendicular to the pair of guide rails, and the center of the key is provided with the threaded holes.
The second embodiment is as follows: the present embodiment is further limited to a clamping device for machining a moving blade made of a special material for a steam turbine according to the first embodiment, and the centering shaft 10 is a stud with a diameter of M30 according to the present embodiment, as described with reference to fig. 2.
And a third specific embodiment: the present embodiment is further limited to the clamping device for machining the moving blade made of the special material of the steam turbine according to the first embodiment, and the first T-shaped connecting hole 2, the second T-shaped connecting hole 3, the third T-shaped connecting hole 4 and the fourth T-shaped connecting hole 7 according to the present embodiment are all connected with the workbench of the four-axis machine tool through studs with the diameter of 16mm, as described in the first embodiment with reference to fig. 1.
The specific embodiment IV is as follows: the present embodiment is further limited to the clamping device for processing a moving blade made of a special material for a steam turbine according to the first embodiment, and the thickness of the baffle 14 according to the present embodiment is 0.5mm to 1mm, as described with reference to fig. 1.
Fifth embodiment: the present embodiment is further limited to a clamping device for processing a moving blade made of a special material for a steam turbine according to the fourth embodiment, and the thickness of the baffle 14 according to the present embodiment is 0.6mm, as described with reference to fig. 1.
Specific embodiment six: the present embodiment is further limited to the clamping device for machining the moving blade made of the special material of the steam turbine according to the first embodiment, and the mounting height of the centering shaft 10 according to the present embodiment is lower than the bar-shaped groove on the fixing base 6, as described in the first embodiment with reference to fig. 1.
Seventh embodiment: the present embodiment is further limited to a clamping device for machining a moving blade made of a special material for a steam turbine according to the sixth embodiment, and the bar-shaped key on the fixing base 6 according to the present embodiment is used for mounting a rubber gasket, as described in reference to fig. 1.
Eighth embodiment: the present embodiment is further limited to the clamping device for machining a moving blade made of a special material for a steam turbine according to the first embodiment, and the diameter of the centering shaft 10 according to the present embodiment is M20, described with reference to fig. 1.
Principle of operation
The gasket parallel pad is used for backing up below the centering shaft 10, so that the centering shaft 10 is clamped below the shaft sleeve, the screw rod is controlled to move up and down in the shaft sleeve, and the centering shaft 10 and the clamp are concentric, thereby meeting the condition that a front end positioning hole is not needed during processing. The T-shaped hole is clamped and connected with a four-axis machine tool turntable by a bolt with the diameter of 16mm, the connecting pin 11 is connected with the center of the four-axis machine tool turntable, the clamp is concentric with the turntable, a positioning block is arranged, a workpiece is positioned in the Y direction during processing, and the centering shaft 10 drives a pair of vices 8 to move simultaneously to clamp the workpiece. The machining of a positioning hole is reduced, the clamp is not replaced, error accumulation caused by re-clamping is avoided, and the positioning hole and the positioning block 12 are reasonably arranged on the clamp in the clamping and positioning mode of the tool, so that the consistency of products is ensured. And the connecting pin 11 is manufactured, so that the clamp can be used for four-axis and five-axis machines in common.
Claims (6)
1. A clamping device for processing turbine moving blades comprises a base and a clamping mechanism;
the center of the upper surface of the base is fixedly connected with the clamping mechanism;
the method is characterized in that: the base comprises a disc (1), a connecting pin (11) and a connecting disc (9);
a first T-shaped connecting hole (2), a second T-shaped connecting hole (3), a third T-shaped connecting hole (4) and a fourth T-shaped connecting hole (7) are uniformly formed in the circumferential edge of the disc (1), the center of the lower surface of the disc (1) is fixedly connected with the upper surface of the connecting disc (9), one end of a connecting pin (11) is fixedly connected with the center of the lower surface of the connecting disc (9), and the other end of the connecting pin (11) is connected with the center of a turntable of a four-axis machine tool;
the clamping mechanism comprises a fixed seat (6), a guide rail (5), a vice (8), a positioning block (12), a T-shaped groove (13) and a baffle (14);
two ends of the upper surface of the fixing seat (6) are respectively provided with a guide rail (5), two guide rails (5) are symmetrically arranged, opposite surfaces of the two guide rails (5) are respectively provided with a sliding groove and are perpendicular to the fixing seat (6), a pair of mutually matched vices (8) are in sliding fit with the fixing seat (6) through the guide rails (5), one end of one of the pair of vices (8) is fixedly connected with the positioning block (12) along the length direction of the guide rails (5), T-shaped grooves (13) are formed in the inner wall of the pair of vices (8) along the length direction, threaded holes are respectively formed in the bottoms of two outer surfaces of the pair of vices (8), one end of the centering shaft (10) penetrates through the two threaded holes of the pair of vices (8), the opposite surfaces of the centering shaft (10) are respectively fixedly connected with the baffle (14), a strip-shaped groove is formed in the center of the upper surface of the fixing seat (6), and the groove is perpendicular to the pair of guide rails; the centering shaft (10) is a double-end stud, and the diameter is M30; the first T-shaped connecting hole (2), the second T-shaped connecting hole (3), the third T-shaped connecting hole (4) and the fourth T-shaped connecting hole (7) are connected with a four-axis machine tool workbench through studs with the diameter of 16 mm.
2. The clamping device for machining moving blades of a steam turbine according to claim 1, wherein: the thickness of the baffle plate (14) is 0.5 mm-1 mm.
3. The clamping device for machining moving blades of a steam turbine according to claim 2, wherein: the thickness of the baffle plate (14) is 0.6mm.
4. The clamping device for machining moving blades of a steam turbine according to claim 1, wherein: the mounting height of the centering shaft (10) is lower than that of the strip-shaped groove on the fixed seat (6).
5. The clamping device for processing turbine moving blades as recited in claim 4, further comprising: the strip-shaped groove on the fixing seat (6) is used for installing a rubber gasket.
6. The clamping device for machining moving blades of a steam turbine according to claim 1, wherein: the diameter of the centering shaft (10) is M20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303980.5A CN109848743B (en) | 2019-04-16 | 2019-04-16 | Clamping device for processing moving blades made of special materials of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910303980.5A CN109848743B (en) | 2019-04-16 | 2019-04-16 | Clamping device for processing moving blades made of special materials of steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109848743A CN109848743A (en) | 2019-06-07 |
| CN109848743B true CN109848743B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910303980.5A Active CN109848743B (en) | 2019-04-16 | 2019-04-16 | Clamping device for processing moving blades made of special materials of steam turbine |
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| CN (1) | CN109848743B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115431190A (en) * | 2021-06-03 | 2022-12-06 | 深圳市鑫锐德机械五金贸易有限公司 | Four-axis and five-axis multifunctional vice for machining center |
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| CN1605715A (en) * | 2003-10-10 | 2005-04-13 | 斯内克马发动机公司 | Method of repairing metal articles, preferably blades of gas turbines |
| CN202356939U (en) * | 2011-11-24 | 2012-08-01 | 杭州汽轮机股份有限公司 | Adjustable hydraulic clamp for finish-milling of diamond molded surface of turbine blade |
| CN202984762U (en) * | 2012-11-22 | 2013-06-12 | 张家港玉成精机有限公司 | Processing machine tool for vice jaw of bench vice |
| CN103921147A (en) * | 2014-04-28 | 2014-07-16 | 哈尔滨汽轮机厂有限责任公司 | Clamp for machining steam passage of large blade of steam turbine |
| CN204235177U (en) * | 2014-11-19 | 2015-04-01 | 杭州汽轮机股份有限公司 | Convex profile and boss clamp for machining in steam turbine blade |
| CN204771656U (en) * | 2015-07-13 | 2015-11-18 | 哈尔滨汽轮机厂有限责任公司 | Anchor clamps suitable for four -axis machine tool machining turbine blade sagittal plane |
| CN206445560U (en) * | 2017-02-08 | 2017-08-29 | 景德镇明兴航空锻压有限公司 | Turbine blade Special fixture adapted for cutting end face |
| CN209717120U (en) * | 2019-04-16 | 2019-12-03 | 哈尔滨汽轮机厂有限责任公司 | A kind of clamping device for processing steam turbine blade |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8087137B2 (en) * | 2009-12-10 | 2012-01-03 | Tian Shoei Wang | Flat clamping hand tool structure |
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2019
- 2019-04-16 CN CN201910303980.5A patent/CN109848743B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605715A (en) * | 2003-10-10 | 2005-04-13 | 斯内克马发动机公司 | Method of repairing metal articles, preferably blades of gas turbines |
| CN202356939U (en) * | 2011-11-24 | 2012-08-01 | 杭州汽轮机股份有限公司 | Adjustable hydraulic clamp for finish-milling of diamond molded surface of turbine blade |
| CN202984762U (en) * | 2012-11-22 | 2013-06-12 | 张家港玉成精机有限公司 | Processing machine tool for vice jaw of bench vice |
| CN103921147A (en) * | 2014-04-28 | 2014-07-16 | 哈尔滨汽轮机厂有限责任公司 | Clamp for machining steam passage of large blade of steam turbine |
| CN204235177U (en) * | 2014-11-19 | 2015-04-01 | 杭州汽轮机股份有限公司 | Convex profile and boss clamp for machining in steam turbine blade |
| CN204771656U (en) * | 2015-07-13 | 2015-11-18 | 哈尔滨汽轮机厂有限责任公司 | Anchor clamps suitable for four -axis machine tool machining turbine blade sagittal plane |
| CN206445560U (en) * | 2017-02-08 | 2017-08-29 | 景德镇明兴航空锻压有限公司 | Turbine blade Special fixture adapted for cutting end face |
| CN209717120U (en) * | 2019-04-16 | 2019-12-03 | 哈尔滨汽轮机厂有限责任公司 | A kind of clamping device for processing steam turbine blade |
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| Publication number | Publication date |
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| CN109848743A (en) | 2019-06-07 |
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