CN104259534B - Non-adjustable packing back of the body arc processing unit (plant) and processing method - Google Patents
Non-adjustable packing back of the body arc processing unit (plant) and processing method Download PDFInfo
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- CN104259534B CN104259534B CN201410475834.8A CN201410475834A CN104259534B CN 104259534 B CN104259534 B CN 104259534B CN 201410475834 A CN201410475834 A CN 201410475834A CN 104259534 B CN104259534 B CN 104259534B
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- Prior art keywords
- packing
- body arc
- processing
- plate
- straight pin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
-
- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Abstract
The invention discloses a kind of non-adjustable packing back of the body arc processing unit (plant) and processing method, it is characterized in that: a processing plate is set, and processing plate is the upper surface in a rectangular steel plates, be and penetrate shape each road holddown groove that distributes from front end to the tail end of rectangular steel plates of rectangular steel plates; Run through steel plate thickness direction at the front end of rectangular steel plates one through hole be set, coordinate through hole be provided with straight pin, straight pin in through hole for being rotatably assorted. The present invention utilizes existing milling machine to process, and obtains process velocity faster in mode cheaply, and can adapt to the packing back of the body arc processing of the wider radius of gyration.
Description
Technical field
The present invention relates to a kind of non-adjustable packing back of the body arc processing unit (plant) and processing method, more specifically saying can not for power industryAdjust back of the body arc processing unit (plant) and the processing method of packing.
Background technology
As depicted in figs. 1 and 2, about labyrinth clearance: cylinder internal exists high temperature and high pressure steam, packing 1 and turbine rotorThe size of dynamic and static gaps A between 2 and leakage rate direct correlation, cylinder internal labyrinth clearance senior general directly causes turbine efficiencyReduce, or outer gland packing leakage, contaminated environment. Adjustment about labyrinth clearance: non-adjustable packing is protruding by changing packing backThe size of platform is adjusted the size of labyrinth clearance. The adjustment face of finishing packing boss, i.e. packing back of the body arc 5, becomes packing boss 1aThin, under the effect of the spring leaf 4 of packing 1 side in gland sleeve 3, labyrinth clearance is diminished.
There is respectively different problems in the following the whole bag of tricks that power plant adjusts for the gap of non-adjustable packing at present:
The firstth, adopt the back of the body arc machine that can buy on market, directly the undesirable packing back of the body of machining gap arc. But buy onePlatform back of the body arc machine needs ten thousand yuan of RMB 10-20, and off-axis very easily occurs its motor of back of the body arc machine of buying in the time that processing capacity is large;
The secondth, adopt scraper to repair and scrape at back of the body arc position, but that it repair the speed of scraping is very slow, can not adapt to Production requirement;
The 3rd is to utilize boring machine to carry out boring at packing back of the body arc position, and this mode exists the slow problem of process velocity equally, meanwhile,Radius of machining is subject to the restriction of workbench.
The 4th is machining mould, carries out by the processing of road packing, and the machining mould kind that this mode relates to is more, and cost is very high.
Directly change satisfactory new packing for the 5th, this obviously causes the wasting of resources.
Summary of the invention
The present invention is for avoiding the existing weak point of above-mentioned prior art, provide a kind of non-adjustable packing back of the body arc processing unit (plant) andProcessing method, utilizes existing milling machine to process, and obtains process velocity faster, and can fit in mode cheaplyThe packing back of the body arc processing of the radius of gyration that should be wider.
The present invention is that technical solution problem adopts following technical scheme:
The non-adjustable packing back of the body of the present invention arc processing unit (plant), is characterized in: a processing plate is set, and described processing plate is at a rectangle steelThe upper surface of plate, is and penetrates shape each road holddown groove that distributes from front end to the tail end of rectangular steel plates of rectangular steel plates; In described rectangular steel platesFront end run through steel plate thickness direction one through hole be set, coordinate described through hole to be provided with straight pin, described straight pin is at described through holeIn for being rotatably assorted.
The non-adjustable packing back of the body of the present invention arc processing unit (plant), its feature is also: described holddown groove is at least twice.
The non-adjustable packing back of the body of the present invention arc processing unit (plant), its feature is also: the cross section of described holddown groove is inverse-T-shaped.
The non-adjustable packing back of the body of the present invention arc processing method, is characterized in: a processing plate is set, and described processing plate is at a rectangle steelThe upper surface of plate, be and penetrate shape each road holddown groove that distributes from front end to the tail end of rectangular steel plates of rectangular steel plates; In described rectangular steel platesFront end run through steel plate thickness direction one through hole be set, coordinate described through hole to be provided with straight pin, described straight pin is at described through holeIn for being rotatably assorted; Described processing method is to carry out as follows:
Step 1: utilize straight pin to be positioned on milling machine table described processing plate, packing is placed on to institute with its sidepiece planeState on processing plate, described packing is at least across twice holddown groove, and packing back of the body arc machined surface, towards straight pin place one side, arrangesThe distance at the center of described packing back of the body arc machined surface and straight pin is packing back of the body arc radius of machining; Table top one side of packing boss withThe bolt being fixedly installed in holddown groove positions, at the opposite side of packing to be fixedly installed on the pressing plate button in holddown groovePress, described packing is fixed on processing plate;
Step 2: by described packing back of the body arc radius of machining moving milling machine workbench; Taking straight pin as in to rotate described processing plate,And the dial gauge being arranged on fraise jig in rotation process utilization confirms that packing back of the body arc Working position error is everywhere no more than0.5mm；
Step 3: milling cutter feed on the machined surface of packing back of the body arc, centered by straight pin, rotate described processing plate simultaneously, utilizeThe mobile processing capacity of milling cutter on the machined surface of packing back of the body arc of controlling of milling machine table, completes processing.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the radius of gyration that the present invention can process packing back of the body arc is at 50mm～2m, and its scope is determined by the size of base plate.
2, the inventive method is utilized adjustment function, its fixture holding function firmly of milling machine, and it can install major diameter milling cutterThe high characteristic of precision that function, its movable workbench amount can be controlled in 0.05mm, obtains higher machining accuracy, has avoided adoptingBy the situation of carrying on the back arc machine in prior art and be prone to disconnected milling cutter and break motor bearing, processing cost is low.
3, the present invention repaiies and scrapes and the processing mode of boring machine boring has improved process velocity greatly than scraper.
Brief description of the drawings
Fig. 1 is packing principle vertical profile schematic diagram;
Fig. 2 is packing principle sectional schematic diagram;
Fig. 3 processes plate structure schematic diagram in the present invention;
Fig. 4 is packing and processing plate and milling machine table fitting plane schematic diagram in the present invention;
Fig. 5 is packing and processing plate and milling machine table assembling elevational schematic view in the present invention;
Fig. 6 is processing method schematic diagram in the present invention;
Fig. 7 is milling cutter feed schematic diagram in the present invention;
Number in the figure: A gap, 1 packing, 1a packing boss, 2 turbine rotors, 3 gland sleeves, 4 spring leafs; 5 packingsBack of the body arc; 6 rectangular steel plates, 6a handle, 7 holddown grooves, 8 through holes, 9 straight pins, 10 milling machine tables, 11 bolts,12 pressing plates, 13 milling cutters, 14 milling fixtures, 15 large radius packings.
Detailed description of the invention
Referring to Fig. 3, in the present embodiment, the version of non-adjustable packing back of the body arc processing unit (plant) is that a processing plate is set, and processing plate isAt the upper surface of a rectangular steel plates 6, be and penetrate the shape each road holddown groove 7 that distributes from front end to the tail end of rectangular steel plates of rectangular steel plates;Run through steel plate thickness direction at the front end of rectangular steel plates 6 one through hole 8 is set, coordinate described through hole 8 to be provided with straight pin 9, cylinderPin 9 in through hole 8 for being rotatably assorted.
In concrete enforcement, holddown groove 7 is at least twice, and the cross section of holddown groove 7 is inverse-T-shaped.
In the present embodiment, non-adjustable packing back of the body arc processing method is: by processing plate is set as shown in Figure 3, processing plate is at a rectangleThe upper surface of steel plate 6, be and penetrate the shape each road holddown groove 7 that distributes from front end to the tail end of rectangular steel plates of rectangular steel plates; At rectangle steelThe front end of plate 6 runs through steel plate thickness direction one through hole 8 is set, and coordinates through hole 8 to be provided with straight pin 9, and straight pin 9 is at through hole 8In for being rotatably assorted.
Referring to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the processing method in the present embodiment is to carry out as follows:
Step 1: utilize straight pin 9 to be positioned on milling machine table 10 processing plate, packing 1 is placed on its sidepiece planeOn processing plate, packing 1 is at least across twice holddown groove 7, and packing back of the body arc machined surface, towards straight pin 9 place one sides, arrangesThe distance at the center of packing back of the body arc machined surface and straight pin 9 is packing back of the body arc radius of machining; In table top one side of packing boss with solidSurely the bolt 11 being arranged in holddown groove 7 positions, at the opposite side of packing to be fixedly installed on the pressure in holddown groove 7Plate 12 is withheld, and packing 1 is fixed on processing plate (as shown in Figure 4 and Figure 5).
Step 2: press packing back of the body arc radius of machining moving milling machine workbench 10; Taking straight pin 9 as in rotate processing plate, andThe dial gauge that rotation process utilization is arranged on milling fixture 14 confirms that packing back of the body arc Working position error is everywhere no more than0.5mm (as shown in Figure 6, Figure 7).
Step 3: milling cutter 13 feed on the machined surface of packing back of the body arc 5, centered by straight pin 9, rotate processing plate, profit simultaneouslyWith the mobile processing capacity (as shown in Figure 7) of milling cutter 13 on the machined surface of packing back of the body arc 5 of controlling of milling machine table 10, completeProcessing.
Large radius packing 15 shown in Fig. 4 and Fig. 6 need to be placed on apart from the farther position of straight pin, successively, and can basisPacking to be processed back of the body arc radius is set the length of processing plate, shown in Fig. 4 and Fig. 5, is fixedly installed on rectangular steel plates afterbodyHandle 6a be for ease of operation, rectangular steel plates is that it is not limited to rectangle for easy to process.
In process, the depth of cut of controlling milling cutter 13 is the cutting output of the cylinder back of the body arc of setting, for repeating to process same productThe cylinder of planting be in the time of first packing of processing, to determine the position of packing on processing plate, and processing plate is at milling machine processing platformOn position, utilize subsequently the bolt that is fixedly installed can directly obtain location, repeat processing.
In order to ensure that processing plate rotates freely, the fit clearance that straight pin and through hole are set should be at 0.03mm～0.04mm, cylinderThe shank Partial Height of pin is than the large 0.20～0.30mm of the gauge of rectangular steel plates, to ensure after utilizing bolted stillSo and between rectangular steel plates maintain gap, make rectangular steel plates flexible rotating.
Claims (1)
1. a non-adjustable packing back of the body arc processing method, is characterized in that: a processing plate is set, and described processing plate is at a rectangle steelThe upper surface of plate (6), is and penetrates the shape each road holddown groove (7) that distributes from front end to the tail end of rectangular steel plates of rectangular steel plates; At described squareThe front end of shape steel plate (6) runs through steel plate thickness direction one through hole (8) is set, and coordinates described through hole (8) to be provided with straight pin (9), instituteState straight pin (9) in described through hole (8) for being rotatably assorted; Described processing method is to carry out as follows:
Step 1: utilize straight pin (9) to be positioned at milling machine table (10) described processing plate upper, packing (1) is flat with its sidepieceFace is placed on described processing plate, and described packing (1) is at least across twice holddown groove (7), and packing back of the body arc machined surface is towards cylinderPin (9) place one side, the distance that the center of described packing back of the body arc machined surface and straight pin (9) is set is packing back of the body arc radius of machining;Table top one side at packing boss positions with the bolt (11) being fixedly installed in holddown groove (7), at the opposite side of packingWithhold with the pressing plate (12) being fixedly installed in holddown groove (7), described packing (1) is fixed on processing plate;
Step 2: by described packing back of the body arc radius of machining moving milling machine workbench (10); Taking straight pin (9) as in described in rotating, addWork plate, and the dial gauge being arranged on fraise jig in rotation process utilization confirms that packing back of the body arc Working position error is everywhere not superCross 0.5mm;
Step 3: milling cutter (13) feed on the machined surface of packing back of the body arc (5), centered by straight pin (9), rotate described processing simultaneouslyPlate, utilizes the mobile milling cutter (13) of controlling of milling machine table (10) to carry on the back the processing capacity on the machined surface of arc (5) at packing, completes processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475834.8A CN104259534B (en) | 2014-09-17 | 2014-09-17 | Non-adjustable packing back of the body arc processing unit (plant) and processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475834.8A CN104259534B (en) | 2014-09-17 | 2014-09-17 | Non-adjustable packing back of the body arc processing unit (plant) and processing method |
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| Publication Number | Publication Date |
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| CN104259534A CN104259534A (en) | 2015-01-07 |
| CN104259534B true CN104259534B (en) | 2016-05-25 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106984947A (en) * | 2017-04-14 | 2017-07-28 | 北京航星机器制造有限公司 | The machining process of journal stirrup part arc profile |
| CN110722383A (en) * | 2019-10-26 | 2020-01-24 | 含山县大力精密机械有限公司 | Adjustable anchor clamps are used in drilling of brake block |
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| CN2559448Y (en) * | 2002-08-05 | 2003-07-09 | 张宙宇 | Multifunctional gland sealing trimmer |
| CN201179563Y (en) * | 2008-03-17 | 2009-01-14 | 韩兴全 | Electric scraping steam seal gland |
| CN202399095U (en) * | 2011-11-04 | 2012-08-29 | 哈尔滨通能电气股份有限公司 | Steam sealing ring gap shape-following type scraping device for steam turbine |
| CN103406578A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | On-site gland sealing back-profile milling machine for turbine |
| CN103586542A (en) * | 2013-10-17 | 2014-02-19 | 江苏透平密封高科技有限公司 | Steam seal back profile scraping device |
| CN204035645U (en) * | 2014-09-17 | 2014-12-24 | 大唐淮北发电厂 | Non-adjustable packing back of the body arc processing unit (plant) |
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2014
- 2014-09-17 CN CN201410475834.8A patent/CN104259534B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2559448Y (en) * | 2002-08-05 | 2003-07-09 | 张宙宇 | Multifunctional gland sealing trimmer |
| CN201179563Y (en) * | 2008-03-17 | 2009-01-14 | 韩兴全 | Electric scraping steam seal gland |
| CN202399095U (en) * | 2011-11-04 | 2012-08-29 | 哈尔滨通能电气股份有限公司 | Steam sealing ring gap shape-following type scraping device for steam turbine |
| CN103406578A (en) * | 2013-07-31 | 2013-11-27 | 江苏鑫信润科技有限公司 | On-site gland sealing back-profile milling machine for turbine |
| CN103586542A (en) * | 2013-10-17 | 2014-02-19 | 江苏透平密封高科技有限公司 | Steam seal back profile scraping device |
| CN204035645U (en) * | 2014-09-17 | 2014-12-24 | 大唐淮北发电厂 | Non-adjustable packing back of the body arc processing unit (plant) |
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| CN104259534A (en) | 2015-01-07 |
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