CN102091801B - Processing clamp and method for inclined pin hole in low-pressure inner cylinder cavity of steam turbine - Google Patents
Processing clamp and method for inclined pin hole in low-pressure inner cylinder cavity of steam turbine Download PDFInfo
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- CN102091801B CN102091801B CN200910201135A CN200910201135A CN102091801B CN 102091801 B CN102091801 B CN 102091801B CN 200910201135 A CN200910201135 A CN 200910201135A CN 200910201135 A CN200910201135 A CN 200910201135A CN 102091801 B CN102091801 B CN 102091801B
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- pin hole
- taper pin
- anvil
- diapire
- clamp
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Abstract
The invention discloses a processing clamp for an inclined pin hole in the low-pressure inner cylinder cavity of a steam turbine, which is a U-shaped groove block, wherein the distance between the side walls of the U-shaped groove block is matched with the width of lugs around the inclined pin hole, the groove depth is equal to the height of the lugs, a plurality of mounting holes are formed on one side wall of the U-shaped groove block, the inside surface of the bottom wall of the U-shaped groove block is a plane vertical to the side walls of the U-shaped groove block, the outside surface of the bottom wall of the U-shaped groove block is an inclined surface which forms an angle alpha with the inside surface of the bottom wall, the angle alpha is the included angle between the axis of the pin hole and the surrounding end face of the pin hole, and a plurality of drilled holes are formed on the bottom wall of the U-shaped groove block in a manner of being vertical to the inside surface of the bottom wall. The invention also discloses a processing method for the inclined pin hole in the low-pressure inner cylinder cavity of the steam turbine, which comprises the following steps: drawing a line, mounting a clamp, mounting a magnetic drill, tightly attracting the magnetic drill, and drilling the inclined pin hole. The processing clamp and processing method can enlarge the processing range of the magnetic drill and can satisfy the needs for processing holes in various environments.
Description
Technical field
The present invention relates to the clamp for machining method in the taper pin hole in a kind of steam turbine low-pressure inner casing cavity.
Background technology
The present position of the conventional 15 ° of oblique junction of the edges of two sheets of paper pin-and-holes in 660MW supercritical turbine low-pressure internal cylinder horizontal flange place is special, and the plane space around the pin-and-hole is little, and it is many to add position, interference part in man-hour, has only pressing plate groove lug around the pin-and-hole.Simultaneously according to this pin-and-hole needs field machining of matching requirements, thereby the application of large-sized drill machine, boring machine is restricted.In the existing process technology, less with the degree of depth for diameter, axis is vertical with the plane, the plane, present position is openr, be convenient to the hole that pincers worker is accomplished, the technologist adopts the suction anvil to solve the processing in this type of hole more.Process technology is following: 1. the pincers worker line is carried out in pair machining hole position; 2. will inhale the anvil positioning and fixing to the part noumenon plane vertical through suction surface, make the scribing position of inhaling anvil drill bit hole with axially bored line; 3. accurate hole is bored, is expanded, cuts with scissors in hand feed.
Above-mentioned existing process technology can only be applied to lean on the part noumenon location to inhale anvil and accomplish the processing in hole, and axially bored line must be vertical with the part noumenon plane, and this has limited this technological popularization and application to a certain extent.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of prior art, the clamp for machining and the processing method in the taper pin hole in a kind of steam turbine low-pressure inner casing cavity is provided, it can enlarge the range of work of inhaling anvil and the process requirements that can adapt to the hole under the multiple environment.
A kind of technical scheme that realizes above-mentioned purpose is: the clamp for machining in the taper pin hole in a kind of steam turbine low-pressure inner casing cavity; It is a U font geosynclinal block; Distance between its two side and said taper pin hole lug width coupling on every side; And groove depth is the height of lug, offers some installing holes on its sidewall, and its diapire inner surface is the plane vertical with its two side; And its diapire outer surface is one be the inclined-plane of α at angle with said diapire inner surface, and this α is the angle between axis and the taper pin hole lug surface on every side in said taper pin hole.
The clamp for machining in the taper pin hole in the above-mentioned steam turbine low-pressure inner casing cavity wherein, is offered some borings with the mode vertical with its diapire inner surface on the said diapire.
The another kind of technical scheme that realizes above-mentioned purpose is: the processing method in the taper pin hole in a kind of steam turbine low-pressure inner casing cavity comprises the following steps:
A. scribe step is carried out the pincers worker line in taper pin hole site to be processed;
B. the step of sectional fixture, the diapire inner surface and the two side that utilize anchor clamps earlier with said anchor clamps clip on the lug around the said taper pin hole, again through bolt with clamps on lug;
C., the step of inhaling anvil is installed, will inhales the anvil positioning and fixing to the diapire outer surface of said anchor clamps through inhaling the anvil suction surface;
D. suck the step of anvil, energising will be inhaled anvil and sucked;
E. accomplish the step of boring the taper pin hole, inhale anvil brill, expansion, the accurate taper pin of hinge hole through the pincers worker hand feed.
The taper pin hole processing clamp in the steam turbine low-pressure inner casing cavity of the present invention and the technical scheme of processing method; Through designing a sleeve clamp is the feasible environment that the processing in taper pin hole provides a small processing equipment-suction anvil to use, and makes the range of work of inhaling anvil obtain further expansion.Because inhaling anvil is itemsization and standardized equipment, cost is low, has saved the funds of development special equipment, greatly reduces processing cost.
Description of drawings
Fig. 1 a, Fig. 1 b and Fig. 1 c are the structural representation of the clamp for machining in the taper pin hole in the steam turbine low-pressure inner casing cavity of the present invention;
Fig. 2 is the application model figure of the clamp for machining in taper pin of the present invention hole.
The specific embodiment
Below through embodiment particularly and combine accompanying drawing that technical scheme of the present invention is described:
See also Fig. 1 a, Fig. 1 b and Fig. 1 c; The clamp for machining 1 in the taper pin hole in the steam turbine low-pressure inner casing cavity of the present invention; Be a U font geosynclinal block, the lug 31 width coupling around distance L between its two side 11 and the said taper pin hole, and groove depth H is the height of lug 31; Offer some installing holes 110 on its sidewall 11; Its diapire 121 inner surfaces are the plane vertical with its two side 11; And its diapire outer surface 122 is one be the inclined-plane of α at angle with diapire inner surface 121, and this α is the angle between axis and this taper pin hole lug 31 surfaces on every side in taper pin hole; Diapire outer surface 122 away between the bottom of sidewall 11 outer surfaces of an end of diapire inner surface 121 and a corresponding side with one with diapire inner surface 121 be inclined-plane 112 transition of β at angle; To offer some borings 13, be used to alleviate anchor clamps 1 weight on the diapire 12 of anchor clamps 1 with diapire inner surface 121 vertical modes.
See also Fig. 2 again, the processing method in the taper pin hole in the steam turbine low-pressure inner casing cavity of the present invention comprises the following steps:
A. scribe step is carried out the pincers worker line to the taper pin hole site at low-pressure internal cylinder to be processed 3 horizontal flanges 30 places;
B. the step of sectional fixture, auxiliary lug on the lug 31 around the taper pin hole, can be welded with anchor clamps 1 clip in case of necessity in the diapire inner surface 121 and the two side 11 that utilize anchor clamps 1 earlier, adjusts angle simultaneously, through bolt anchor clamps 1 is fixed on the lug 31 again;
C., the step of inhaling anvil is installed, will inhales anvil 2 positioning and fixing to the diapire outer surface 122 of anchor clamps 1 through inhaling anvil 2 suction surfaces, anvil 2 positions are inhaled in adjustment makes the above-mentioned scribing position of drill bit;
D. suck the step of anvil, energising will be inhaled on the diapire outer surface 122 that anvil 2 is adsorbed on anchor clamps 1 securely;
E. accomplish the step of rat holing, inhale anvil through the pincers worker hand feed and bore, expand, cut with scissors accurate taper pin hole.
The processing method in the taper pin hole in the steam turbine low-pressure inner casing cavity of the present invention is the feasible environment that the processing in hole provides a small processing equipment-suctions anvil to use through designing a sleeve clamp, makes the range of work of suction anvil obtain further expansion.Because inhaling anvil is itemsization and standardized equipment, cost is low, has saved the funds of development special equipment, greatly reduces processing cost.Processing method of the present invention can adapt to process requirements under the multiple environment, for designer's innovative design, structure optimization provides solid technology basis.
Those of ordinary skill in the art will be appreciated that; Above embodiment is used for explaining the present invention; And be not with opposing qualification of the present invention; As long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (3)
1. the clamp for machining in the taper pin hole in the steam turbine low-pressure inner casing cavity; It is characterized in that; Said clamp for machining is a U font geosynclinal block, distance between its two side and said taper pin hole lug width coupling on every side, and groove depth is the height of lug; Offer some installing holes on its sidewall; Its diapire inner surface is the plane vertical with its two side, and its diapire outer surface is one be the inclined-plane of α at angle with said diapire inner surface, this α be axis and the taper pin hole in said taper pin hole lug on every side with the corresponding surface of sidewall said clamp for machining between angle.
2. the clamp for machining in the taper pin hole in the steam turbine low-pressure inner casing cavity according to claim 1 is characterized in that, offers some borings with the mode vertical with its diapire inner surface on the said diapire.
3. the processing method in the taper pin hole in the steam turbine low-pressure inner casing cavity is characterized in that said processing method comprises the following steps:
A. scribe step is carried out the pincers worker line in taper pin hole site to be processed;
B. the step of sectional fixture, the diapire inner surface and the two side that utilize anchor clamps earlier with said anchor clamps clip on the lug around the said taper pin hole, again through bolt with clamps on lug;
C., the step of inhaling anvil is installed, will inhales the anvil positioning and fixing to the diapire outer surface of said anchor clamps through inhaling the anvil suction surface;
D. suck the step of anvil, energising will be inhaled anvil and sucked;
E. accomplish the step of boring the taper pin hole, inhale anvil brill, expansion, the accurate taper pin of hinge hole through the pincers worker hand feed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910201135A CN102091801B (en) | 2009-12-15 | 2009-12-15 | Processing clamp and method for inclined pin hole in low-pressure inner cylinder cavity of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910201135A CN102091801B (en) | 2009-12-15 | 2009-12-15 | Processing clamp and method for inclined pin hole in low-pressure inner cylinder cavity of steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102091801A CN102091801A (en) | 2011-06-15 |
| CN102091801B true CN102091801B (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910201135A Active CN102091801B (en) | 2009-12-15 | 2009-12-15 | Processing clamp and method for inclined pin hole in low-pressure inner cylinder cavity of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102091801B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0488842A1 (en) * | 1990-11-29 | 1992-06-03 | Kabushiki Kaisha Kosmek | Clamping apparatus |
| JP2000024857A (en) * | 1998-07-15 | 2000-01-25 | Sekisui Chem Co Ltd | Work fixing device and work fixing method |
| CN201931124U (en) * | 2011-01-11 | 2011-08-17 | 邵阳神风动力制造有限责任公司 | Processing mould for two-way inclined hole of cylinder body |
-
2009
- 2009-12-15 CN CN200910201135A patent/CN102091801B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0488842A1 (en) * | 1990-11-29 | 1992-06-03 | Kabushiki Kaisha Kosmek | Clamping apparatus |
| JP2000024857A (en) * | 1998-07-15 | 2000-01-25 | Sekisui Chem Co Ltd | Work fixing device and work fixing method |
| CN201931124U (en) * | 2011-01-11 | 2011-08-17 | 邵阳神风动力制造有限责任公司 | Processing mould for two-way inclined hole of cylinder body |
Non-Patent Citations (1)
| Title |
|---|
| 张爱云.简易钻孔夹具三则.《机械工人.冷加工》.1997,(第1期),12. * |
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| Publication number | Publication date |
|---|---|
| CN102091801A (en) | 2011-06-15 |
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