CN103769808B - 600MW high pressure main regulation valve body of steam rough machining method - Google Patents

600MW high pressure main regulation valve body of steam rough machining method Download PDF

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Publication number
CN103769808B
CN103769808B CN201310711786.3A CN201310711786A CN103769808B CN 103769808 B CN103769808 B CN 103769808B CN 201310711786 A CN201310711786 A CN 201310711786A CN 103769808 B CN103769808 B CN 103769808B
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drill bit
valve body
large flange
molded line
hole
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CN103769808A (en
Inventor
贾春艳
高楠楠
乔勇
季东军
王丽红
李凤娟
孙英娣
于克
林丽晶
谢方明
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Harbin Electric Power Generation Equipment National Engineering Research Center Co ltd
Harbin Turbine Co Ltd
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Harbin Turbine Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/001Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices 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
    • B23Q3/06Work-clamping means
    • B23Q3/062Work-clamping means adapted for holding workpieces having a special form or being made from a special material

Abstract

600MW high pressure main regulation valve body of steam rough machining method, it relates to a kind of valve casing rough machining method, there is the long problem of alignment time to solve 600MW high pressure main regulation valve body of steam rough machining method.Method: process each datum level; The height of the adjustment left backing plate of fixture and right backing plate; Clamping valve body; Process the first pitch large flange end face side opening; Processing main inlet throttle-stop valve hole; Process the second hole, pitch large flange side, process the admission opening in the second hole, pitch large flange side; Process steam vent; Take out expansible stopper; Levorotation line and right molded line in processing ball chamber; Process upper molded line and lower molded line in the first lantern chamber; Process upper molded line and lower molded line in the second lantern chamber; To process in the first lantern chamber and the second lantern chamber molded line bottom two first; Molded line bottom finish turning ball chamber second.Fixture: valve body is placed on left backing plate and right backing plate, and left pillar, middle bilge cod and right pillar are all supported on below valve body.The present invention is for processing 600MW high pressure main regulation valve body of steam.

Description

600MW high pressure main regulation valve body of steam rough machining method
Technical field
The present invention relates to a kind of valve casing rough machining method, be specifically related to a kind of 600MW high pressure main regulation valve body of steam rough machining method, belong to field of machining.
Background technology
Traditional valve casing roughing clamping mainly contains two kinds of modes, one is directly fallen on the table at each for valve body mouth of pipe horizontal positioned, use multiple different jack to carry out the water detection of multi-point support adjustment height to put down, bound on the table through valve outer wall by many ropes simultaneously, and compress at valve body side welding pressing plate lug; Another kind makes corresponding V-type parallels according to body size to be clamped on the outer wall of main inlet throttle-stop valve side, and the other end uses jack to carry out leveling, is compressed by welding pressing plate lug simultaneously.The poor stability when drawback of these two kinds of installation way is clamping, the processing cutting force that can bear is little, and clamping alignment time is longer, make valve body can levelling capturing after needing to adjust multiple jack height simultaneously, this just causes the plenty of time that clamping centering occupies whole process, and makes working (machining) efficiency not high.The main vapour of 600MW steam turbine high pressure regulates in the processing of associating valve casing and all relates to the large aperture of φ more than 300 and the processing of cross bore, the processing of tradition large diameter hole is all on radial drill, adopt the mode of boring and expanding boring, plurality of specifications reamer is used to carry out many grades of aperture reaming processing, cause the inefficient situation of large aperture hole machined, because there is disconnected cutting in process in the processing of major diameter cross bore, the easy tipping of cutter and processing difficulties, these reasons all constrain 600MW and the main vapour of above steam turbine high pressure regulates the processing of union valve and the lifting of working (machining) efficiency.
Summary of the invention
The present invention regulates associating valve casing rough machining method existence and stability poor for solving the main vapour of existing 600MW high pressure, bear processing cutting force little, alignment time is long, causes the problem that associating valve casing working (machining) efficiency is low, and then proposes a kind of 600MW high pressure main regulation valve body of steam roughing fixture.
The present invention is the technical scheme taked that solves the problem:
Processing method of the present invention is realized by following steps: step one, process each datum level: utilize the main inlet throttle-stop valve end face on Boring machine processing valve body, adjustment doors large flange end face, venthole end face, the first pitch air intake end face and the second pitch air intake end face, left datum level and right datum level;
Step 2, the adjustment left backing plate of fixture and the height of right backing plate: according to left datum level to the numerical value of the center line of valve body and right datum level to the numerical value of the center line of valve body, left backing plate on adjustment fixture and the thickness of right backing plate, ensure that the center line of valve body installation rear valve body is 950mm to worktable upper surface distance;
Step 3, clamping valve body: the placing flat of valve body tube saliva, on left support abutment valve body being placed in fixture and right support abutment, utilize fixture to be fixed clamping to valve body;
Step 4, process the first pitch large flange end face side opening: by the adjustment doors large flange end face of valve body just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body surface are adjacent to, process the first pitch large flange end face side opening with D172 drill bit and reach Φ 172mm, with the admission end jam-pack of φ 172mm expansible stopper by the first pitch large flange end face side opening, the steam output end processing the first pitch large flange end face side opening with D250 drill bit reaches Φ 250mm, with D335 drill bit, Φ 250mm hole is expanded to Φ 335mm, with φ 335mm expansible stopper by the first pitch large flange end face side opening jam-pack,
Step 5, processing main inlet throttle-stop valve hole: rotary table makes the main inlet throttle-stop valve end face of valve body just to deep hole drilling machine main shaft, Φ 335mm is reached with D335 drill bit processing main inlet throttle-stop valve hole, with D340 drill bit, Φ 335mm hole is expanded to Φ 340mm, with D385 drill bit, Φ 340mm hole is expanded to Φ 385mm, hole depth 1650mm, with D470 drill bit, Φ 385mm hole is expanded to Φ 470mm, hole depth 615mm;
Step 6, process the second pitch large flange end face side opening: rotary table makes the adjustment doors large flange end face of valve body just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body surface are adjacent to, process the second pitch large flange end face side opening with D172 drill bit and reach Φ 172mm, D250 drill bit processing large flange end face side opening reaches Φ 250mm, with D335 drill bit, Φ 250mm hole is expanded to Φ 335mm, with φ 335mm expansible stopper by the second pitch large flange end face side opening jam-pack;
Step 7, process the admission opening of the second pitch large flange end face side opening: rotary table makes the second pitch air intake end face of valve body just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body surface are adjacent to, the admission opening processing the second pitch large flange end face side opening with D172 drill bit reaches Φ 172mm, with the admission end jam-pack of φ 172mm expansible stopper by the admission opening of the second pitch large flange end face side opening;
Step 8, process steam vent: make the venthole end face of valve body just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body surface are adjacent to, process steam vent with D172 drill bit and reach Φ 172mm, with D250 drill bit, Φ 172mm hole is expanded to Φ 250mm;
Step 9, taking-up expansible stopper: after each hole machined terminates, taken out by each expansible stopper, turn lower sequence;
Step 10, processing ball chamber: on numerical control 200 boring machine, heavy boring ball chamber reaches SR350mm ± 1mm;
Step 11, process the first lantern chamber: heavy boring first lantern chamber reaches φ 450mm on 200 numerical control borers, and heavy boring 45 ° of conical surfaces also stay 5mm surplus;
Step 2, process the second lantern chamber: heavy boring second lantern chamber reaches φ 510mm on 200 numerical control borers, stays 35mm surplus;
Levorotation line and right molded line in step 13, processing ball chamber: on numerical control Q1-155 boring machine, by horizontal, cutter processing levorotation line and right molded line are reached figure paper size according to numerical control program;
Step 14, process the first lantern chamber. molded line and first time molded line on interior first: on numerical control Q1-155 boring machine according to numerical control program by laterally cutter first being processed molded line on first in the first lantern chamber, reprocess first time molded line;
Step 15, process molded line and second time molded line on second in the second lantern chamber: on numerical control Q1-155 boring machine according to numerical control program by laterally cutter first being processed molded line on second in the second lantern chamber, reprocess second time molded line;
Step 10 six, to process in the first lantern chamber and the second lantern chamber molded line bottom two first: on numerical control Q1-155 boring machine according to numerical control program by longitudinally cutter first being processed in the first lantern chamber and the second lantern chamber molded line bottom two first;
Molded line bottom step 10 seven, finish turning ball chamber second: utilize numerical control program finish turning ball chamber second bottom molded line, the sharp corner of each working position of last pincers worker polishing valve body makes its rounding off; So far, valve body roughing completes.
The present invention compared with prior art has following beneficial effect:
One, utilize fixture to be fixed clamping to solid valve body, by numerical control borer, ball chamber and lantern chamber are processed, decrease a large amount of clamping time and alignment time, utilize numerical control borer Drilling operation to replace traditional diamond-making technique to ensure that the highly-efficient processing of valve body.
Two, present invention improves the rough machined process that the main vapour of 600MW steam turbine high pressure regulates the solid valve casing of associating, solve the low difficult problem of processing with major diameter cross bore of solid valve casing conventional method working (machining) efficiency.
Accompanying drawing explanation
Fig. 1 is the position view of each datum level of valve body M in the step one of detailed description of the invention one;
Fig. 2 is the K-K sectional view of Fig. 1;
Fig. 3 processes the schematic diagram that the first pitch large flange end face side opening 10 is Φ 172mm in the step 4 of detailed description of the invention one;
Fig. 4 is the position view filling in the first pitch large flange end face side opening 10 in the step 4 of detailed description of the invention one with φ 172mm expansible stopper 11;
Fig. 5 is the position view filling in the first pitch large flange end face side opening 10 in the step 4 of detailed description of the invention one with φ 335mm expansible stopper 12;
Fig. 6 processes the schematic diagram that main inlet throttle-stop valve hole 13 is Φ 335mm in the step 5 of detailed description of the invention one;
Fig. 7 processes the schematic diagram that main inlet throttle-stop valve hole 13 is Φ 340mm, Φ 385mm and Φ 470mm in the step 5 of detailed description of the invention one;
Fig. 8 is the step 6 of detailed description of the invention one and the schematic diagram of step 7;
Fig. 9 is the schematic diagram of the step 9 of detailed description of the invention one, step 10 and step 11;
Figure 10 is the schematic diagram of the step 12 of detailed description of the invention one;
Figure 11 is the schematic diagram of the step 13 of detailed description of the invention one;
Figure 12 is the schematic diagram of the step 14 of detailed description of the invention one;
Figure 13 is II partial enlarged drawing (i.e. the schematic diagram of the step 15 of detailed description of the invention one) of Figure 11 and Figure 12;
Figure 14 is the I partial enlarged drawing (i.e. the schematic diagram of the step 10 six of detailed description of the invention one) of Figure 10;
Figure 15 is the integrally-built front view of fixture;
Figure 16 is the right view of Figure 15;
Figure 17 is the front view of base 1;
Figure 18 is the top view of Figure 17;
Figure 19 is the front view of right pressing plate 3;
Figure 20 is the top view of Figure 19;
Figure 21 is the front view of left pressing plate 2;
Figure 22 is the top view of Figure 21;
Figure 23 is the front view of valve body bearing 9;
Figure 24 is the top view of Figure 23.
Detailed description of the invention
Detailed description of the invention one: composition graphs 1 ~ Figure 14 illustrates present embodiment, and present embodiment is realized by following steps:
Step one, process each datum level: utilize common boring machine (lathe model HC212) to process main inlet throttle-stop valve end face A on valve body M, adjustment doors large flange end face B, admission mouth of pipe end face C and steam outlet pipe mouth end face D, left datum level E and right datum level F, see Fig. 1 and Fig. 2;
The height of step 2, adjustment fixture left backing plate 4 and right backing plate 5: according to the numerical value of the numerical value of the center line N-N of left datum level E to valve body M and the center line N-N of right datum level F to valve body M, left backing plate 4 on adjustment fixture and the thickness of right backing plate 5, ensure that the center line N-N of valve body M installation rear valve body M is 950mm to worktable upper surface distance; Be designed to like this ensure that the center line N-N of valve body M installation rear valve body M is equal with the centre-height of deep hole drilling machine and special boring mill to worktable upper surface distance, because the center of deep hole drilling machine and special boring mill is high be 950mm;
Step 3, clamping valve body M: valve body M mouth of pipe horizontal positioned, on left support abutment 1-3 valve body M being placed in fixture and right support abutment 1-4, utilize fixture to be fixed clamping to valve body M;
Step 4, process the first pitch large flange end face side opening 10: by the adjustment doors large flange end face B of valve body M just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body M surface are adjacent to, process the first pitch large flange end face side opening 10 with D172 drill bit and reach Φ 172mm, see Fig. 3, with the admission end jam-pack of φ 172mm expansible stopper 11 by the first pitch large flange end face side opening 10, see Fig. 4, the steam output end processing the first pitch large flange end face side opening 10 with D250 drill bit reaches Φ 250mm, see Fig. 4, with D335 drill bit, Φ 250mm hole is expanded to Φ 335mm, see Fig. 5, with φ 335mm expansible stopper 12 by the first pitch large flange end face side opening 10 jam-pack, see Fig. 5,
Step 5, processing main inlet throttle-stop valve hole 13: rotary table makes the main inlet throttle-stop valve end face of valve body M just to deep hole drilling machine main shaft, Φ 335mm is reached with D335 drill bit processing main inlet throttle-stop valve hole 13, see Fig. 6, with D340 drill bit, Φ 335mm hole is expanded to Φ 340mm, with D385 drill bit, Φ 340mm hole is expanded to Φ 385mm, hole depth 1650mm, with D470 drill bit, Φ 385mm hole is expanded to Φ 470mm, hole depth 615mm, see Fig. 7;
Step 6, process the second pitch large flange end face side opening 14 ': rotary table makes the adjustment doors large flange end face B of valve body M just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body M surface are adjacent to, process the second pitch large flange end face side opening 14 ' with D172 drill bit and reach Φ 172mm, see Fig. 8, Φ 250mm is reached with D250 drill bit processing large flange end face side opening 14 ', with D335 drill bit, Φ 250mm hole is expanded to Φ 335mm, see Fig. 8, with φ 335mm expansible stopper 12 by the second pitch large flange end face side opening 14 ' jam-pack, see Fig. 8;
Step 7, process the admission opening 14 of the second pitch large flange end face side opening: rotary table makes the second pitch air intake end face D ' of valve body M just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body M surface are adjacent to, the admission opening 14 processing the second pitch large flange end face side opening with D172 drill bit reaches Φ 172mm, see Fig. 8, with the admission end jam-pack of φ 172mm expansible stopper 11 by the admission opening 14 of the second pitch large flange end face side opening, see Fig. 8;
Step 8, process steam vent 15: make the venthole end face C of valve body M just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body M surface are adjacent to, process steam vent 15 with D172 drill bit and reach Φ 172mm, see Fig. 8, with D250 drill bit, Φ 172mm hole is expanded to Φ 250mm, see Fig. 8;
Step 9, taking-up expansible stopper: after each hole machined terminates, taken out by each expansible stopper, turn lower sequence;
Step 10, processing ball chamber 16: on numerical control 200 boring machine, heavy boring ball chamber 16 reaches SR350mm ± 1mm, sees Fig. 9;
Step 11, process the first lantern chamber 17: heavy boring first lantern chamber 17 reaches φ 450mm on 200 numerical control borers, and heavy boring 45 ° of conical surfaces 18 also stay 5mm surplus, see Fig. 9;
Step 12, process the second lantern chamber 19: heavy boring second lantern chamber 19 reaches φ 510mm on 200 numerical control borers, stays 35mm surplus, sees Fig. 9;
Levorotation line 20 and right molded line 21 in step 13, processing ball chamber 16: on numerical control Q1-155 boring machine, by horizontal, cutter processing levorotation line 20 and right molded line 21 are reached figure paper size according to numerical control program, see Figure 10;
Step 14, process molded line 22 and first time molded line 23 on first in the first lantern chamber 17: on numerical control Q1-155 boring machine according to numerical control program by laterally cutter first being processed molded line 22 on first in the first lantern chamber 17, namely 191.4 straight lines in left side, 184 straight lines, R100 circular arc and 45 ° of inclined-planes are processed, reprocess first time molded line 23, namely process 191.4 straight lines on right side, 184 straight lines, R100 circular arc and 45 ° of inclined-plane molded line, see Figure 11;
Step 15, process molded line 24 and second time molded line 25 on second in the second lantern chamber 19: on numerical control Q1-155 boring machine according to numerical control program by laterally cutter first being processed molded line 24 on second in the second lantern chamber 19, namely 131.4 straight lines in left side, 124 straight lines, R100 circular arc and 45 ° of inclined-planes are processed, reprocess second time molded line 25, namely process 131.4 straight lines on right side, 124 straight lines, R100 circular arc and 45 ° of inclined-plane molded line, see Figure 12;
Step 10 six, process molded line 26 bottom the first lantern chamber 17 and interior two first of the second lantern chamber 19: on numerical control Q1-155 boring machine according to numerical control program by longitudinally cutter first being processed molded line 26 bottom the first lantern chamber 17 and interior two first of the second lantern chamber 19, namely process R8, R3,50 ° of inclined-planes and R3 molded line, see Figure 13;
Molded line 27 bottom step 10 seven, finish turning ball chamber 16 second: utilize numerical control program finish turning ball chamber 16 second bottom molded line 27, the sharp corner of each working position of last pincers worker polishing valve body M makes its rounding off, sees Figure 14; So far, valve body M roughing completes.
Detailed description of the invention two: composition graphs 3 illustrates present embodiment, present embodiment be in step 4 with D172 drill bit process the first pitch large flange end face side opening 10 reach Φ 172mm time, the rotating speed 110r/min of D172 drill bit, feeding 44mm/min.Other step is identical with detailed description of the invention one.
Detailed description of the invention three: composition graphs 4 and Fig. 5 illustrate present embodiment, present embodiment is when reaching Φ 250mm with the steam output end that D250 drill bit processes the first pitch large flange end face side opening 10 in step 4, the rotating speed 75r/min of D250 drill bit, feeding 30mm/min, when Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, the rotating speed 55r/min of D335 drill bit, feeding 26mm/min.Other step is identical with detailed description of the invention two.
Detailed description of the invention four: composition graphs 6 illustrates present embodiment, present embodiment is when reaching Φ 335mm with D335 drill bit processing main inlet throttle-stop valve hole 13 in step 5, the rotating speed 55r/min of D335 drill bit, feeding 26mm/min, when D335 drill bit is fed to the Φ 335mm of the first pitch large flange end face side opening 10, the rotating speed of D335 drill bit reduces by half (i.e. rotating speed 27.5r/min), feeding reduces by half (i.e. feeding 13mm/min).Other step is identical with detailed description of the invention one.
Detailed description of the invention five: composition graphs 7 illustrates present embodiment, present embodiment is when using D340 drill bit to expand Φ 335mm hole to Φ 340mm in step 5, the rotating speed 55r/min of D340 drill bit, feeding 40mm/min, when Φ 340mm hole being expanded to Φ 385mm with D385 drill bit, the rotating speed 55r/min of D385 drill bit, feeding 30mm/min, when Φ 385mm hole being expanded to Φ 470mm with D470 drill bit, the rotating speed 40r/min of D470 drill bit, feeding 28mm/min.Other step is identical with detailed description of the invention four.
Detailed description of the invention six: composition graphs 8 illustrates present embodiment, present embodiment is when reaching Φ 172mm with the admission opening 14 that D172 drill bit processes the second pitch large flange end face side opening in step 6, the rotating speed 110r/min of D172 drill bit, feeding 44mm/min.Other step is identical with detailed description of the invention one.
Detailed description of the invention seven: composition graphs 8 illustrates present embodiment, present embodiment is when reaching Φ 250mm with the admission end that D250 drill bit processes the admission opening 14 of the second pitch large flange end face side opening in step 6, the rotating speed 75r/min of D250 drill bit, feeding 30mm/min, when Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, the rotating speed 55r/min of D335 drill bit, feeding 30mm/min.Other step is identical with detailed description of the invention six.
Detailed description of the invention eight: composition graphs 8 illustrates present embodiment, present embodiment be in step 7 with D172 drill bit process pore 15 reach Φ 172mm time, the rotating speed 110r/min of D172 drill bit, feeding 44mm/min, when Φ 172mm hole being expanded to Φ 250mm with D250 drill bit, the rotating speed 75r/min of D250 drill bit, feeding 30mm/min.Other step is identical with detailed description of the invention one.
Detailed description of the invention nine: present embodiment is described in conjunction with Figure 15 ~ Figure 22, the fixture of present embodiment comprises base 1, left pressing plate 2, right pressing plate 3, left backing plate 4, right backing plate 5, two left pillars 6, two right pillars 7, two middle bilge cods 8, six valve body bearings 9, six several first Connection Elements 27 of valve body bearing 3 and several second Connection Element 28, base 1 comprises base plate 1-1, riser 1-2, left support abutment 1-3 and right support abutment 1-4, riser 1-2 are vertically set on the upper surface of base plate 1-1, and left support abutment 1-3 and right support abutment 1-4 is separately positioned on the two ends of riser 1-2, riser 1-2, left support abutment 1-3 and right support abutment 1-4 all welds with base plate 1-1, left support abutment 1-3 and right support abutment 1-4 plays the effect supporting valve body M, the both sides of left support abutment 1-3 and the both sides of right support abutment 1-4 are respectively arranged with reinforcement 1-5, reinforcement 1-5 is the rigidity in order to strengthen base plate 1-1 in lifting process, reducing causes base plate 1-1 to be out of shape because valve body M is overweight, the surrounding of base plate 1-1 is provided with U-type groove 1-6, and U-type groove 1-6 is used for by bolt base 1 is tight with workbench handle, left backing plate 4 and right backing plate 5 are separately positioned on the upper surface of left support abutment 1-3 and right support abutment 1-4, valve body M is placed on left backing plate 4 and right backing plate 5, and the left datum level E of processing of valve body M and right datum level F drops on left backing plate 4 and right backing plate 5, after ensureing that the center line N-N of valve body M installation rear valve body M is 950mm to worktable upper surface distance, two left pillars 6 are provided with below left datum level E, two left pillars 6 with riser 1-2 for reference symmetry is arranged, the lower end of each left pillar 6 is connected with base 1 by a valve body bearing 9, two middle bilge cods 8 are provided with below the datum level G of middle part, two middle bilge cods 8 with riser 1-2 for reference symmetry is arranged, the lower end of each middle bilge cod 8 is connected with base 1 by a valve body bearing 9, two right pillars 7 are provided with below right datum level F, two right pillars 7 with riser 1-2 for reference symmetry is arranged, the lower end of each right pillar 7 is connected with base 1 by a valve body bearing 9, each valve body bearing 9 is connected with base 1 by the first Connection Element 27, left pressing plate 2 and right pressing plate 3 are separately positioned on the upper end of valve body M, left pressing plate 2 is connected with base 1 respectively by several second Connection Element 28 with right pressing plate 3.
Detailed description of the invention ten: present embodiment is described in conjunction with Figure 23 and Figure 24, the valve body bearing 9 of present embodiment comprises a support plate 9-1 and oblique block 9-2, and tiltedly a block 9-2 is arranged on one end of support plate 9-1 upper surface, and inclined-plane tiltedly on a block 9-2 outwardly.Other composition and annexation identical with detailed description of the invention nine.

Claims (8)

1. a 600MW high pressure main regulation valve body of steam rough machining method, is characterized in that: described method is realized by following steps:
Step one, process each datum level: utilize the main inlet throttle-stop valve end face (A) on Boring machine processing valve body (M), adjustment doors large flange end face (B), venthole end face (C), the first pitch air intake end face (D) and the second pitch air intake end face (D '), left datum level (E) and right datum level (F);
Step 2, the adjustment left backing plate of fixture (4) and the height of right backing plate (5): according to left datum level (E) to the numerical value of the center line ((N-N)) of valve body (M) and right datum level (F) to the numerical value of the center line (N-N) of valve body (M), left backing plate (4) on adjustment fixture and the thickness of right backing plate (5), the center line (N-N) that rear valve body (M) is installed in guarantee valve body (M) is 950mm to worktable upper surface distance;
Step 3, clamping valve body (M): valve body (M) mouth of pipe horizontal positioned, on the left support abutment (1-3) valve body (M) being placed in fixture and right support abutment (1-4), fixture is utilized to be fixed clamping to valve body (M);
Step 4, process the first pitch large flange end face side opening (10): by the adjustment doors large flange end face (B) of valve body (M) just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body (M) surface are adjacent to, process the first pitch large flange end face side opening (10) with D172 drill bit and reach Φ 172mm, with the admission end jam-pack of φ 172mm expansible stopper (11) by the first pitch large flange end face side opening (10), the steam output end processing the first pitch large flange end face side opening (10) with D250 drill bit reaches Φ 250mm, with D335 drill bit, Φ 250mm hole is expanded to Φ 335mm, with φ 335mm expansible stopper (12) by the first pitch large flange end face side opening (10) jam-pack,
Step 5, processing main inlet throttle-stop valve hole (13): rotary table makes the main inlet throttle-stop valve end face of valve body (M) just to deep hole drilling machine main shaft, Φ 335mm is reached with D335 drill bit processing main inlet throttle-stop valve hole (13), with D340 drill bit, Φ 335mm hole is expanded to Φ 340mm, with D385 drill bit, Φ 340mm hole is expanded to Φ 385mm, hole depth 1650mm, with D470 drill bit, Φ 385mm hole is expanded to Φ 470mm, hole depth 615mm;
Step 6, process the second pitch large flange end face side opening (14 '): rotary table makes the adjustment doors large flange end face (B) of valve body (M) just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body (M) surface are adjacent to, process the second pitch large flange end face side opening (14 ') with D172 drill bit and reach Φ 172mm, Φ 250mm is reached with D250 drill bit processing large flange end face side opening (14 '), with D335 drill bit, Φ 250mm hole is expanded to Φ 335mm, with φ 335mm expansible stopper (12) by the second pitch large flange end face side opening (14 ') jam-pack,
Step 7, process the admission opening (14) of the second pitch large flange end face side opening: rotary table makes the second pitch air intake end face (D ') of valve body (M) just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body (M) surface are adjacent to, the admission opening (14) processing the second pitch large flange end face side opening with D172 drill bit reaches Φ 172mm, and with φ 172mm expansible stopper, ((11) are by the admission end jam-pack of the admission opening (14) of the second pitch large flange end face side opening;
Step 8, process steam vent (15): make the venthole end face (C) of valve body (M) just to deep hole drilling machine main shaft, the sealing shroud of deep hole drilling machine oil head and valve body (M) surface are adjacent to, process steam vent (15) with D172 drill bit and reach Φ 172mm, with D250 drill bit, Φ 172mm hole is expanded to Φ 250mm;
Step 9, taking-up expansible stopper: after each hole machined terminates, taken out by each expansible stopper, turn lower sequence;
Step 10, processing ball chamber (16): on numerical control 200 boring machine, heavy boring ball chamber (16) reaches SR350mm ± 1mm;
Step 11, process the first lantern chamber (17): heavy boring first lantern chamber (17) reaches φ 450mm on 200 numerical control borers, and heavy boring 45 ° of conical surfaces (18) also stay 5mm surplus;
Step 12, process the second lantern chamber (19): heavy boring second lantern chamber (19) reaches φ 510mm on 200 numerical control borers, stays 35mm surplus;
Step 13, processing ball chamber (16) interior levorotation line (20) and right molded line (21): on numerical control Q1-155 boring machine, by horizontal, cutter processing levorotation line (20) and right molded line (21) are reached figure paper size according to numerical control program;
Step 14, process molded line (22) and first time molded line (23) on first in the first lantern chamber (17): on numerical control Q1-155 boring machine according to numerical control program by laterally cutter first being processed molded line (22) on first in the first lantern chamber (17), reprocess first time molded line (23);
Step 15, process molded line (24) and second time molded line (25) on second in the second lantern chamber (19): on numerical control Q1-155 boring machine according to numerical control program by laterally cutter first being processed molded line (24) on second in the second lantern chamber (19), reprocess second time molded line (25);
Step 10 six, process molded line (26) bottom the first lantern chamber (17) and interior two first of the second lantern chamber (19): on numerical control Q1-155 boring machine according to numerical control program by longitudinally cutter first being processed molded line (26) bottom the first lantern chamber (17) and interior two first of the second lantern chamber (19);
Step 10 seven, finish turning ball chamber (16) second bottom molded line (27): utilize numerical control program finish turning ball chamber (16) second bottom molded line (27), the sharp corner of last pincers worker polishing valve body (M) each working position makes its rounding off; So far, valve body (M) roughing completes.
2. 600MW high pressure main regulation valve body of steam rough machining method according to claim 1, it is characterized in that: in described step 4 with D172 drill bit process the first pitch large flange end face side opening (10) reach Φ 172mm time, the rotating speed 110r/min of D172 drill bit, feeding 44mm/min.
3. 600MW high pressure main regulation valve body of steam rough machining method according to claim 2, it is characterized in that: when reaching Φ 250mm with the steam output end that D250 drill bit processes the first pitch large flange end face side opening (10) in described step 4, the rotating speed 75r/min of D250 drill bit, feeding 30mm/min, when Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, the rotating speed 55r/min of D335 drill bit, feeding 26mm/min.
4. 600MW high pressure main regulation valve body of steam rough machining method according to claim 1, it is characterized in that: when reaching Φ 335mm with D335 drill bit processing main inlet throttle-stop valve hole (13) in described step 5, the rotating speed 55r/min of D335 drill bit, feeding 26mm/min, when D335 drill bit is fed to the Φ 335mm of the first pitch large flange end face side opening (10), the rotating speed of D335 drill bit reduces by half, feeding reduces by half.
5. 600MW high pressure main regulation valve body of steam rough machining method according to claim 4, it is characterized in that: when Φ 335mm hole being expanded to Φ 340mm with D340 drill bit in described step 5, the rotating speed 55r/min of D340 drill bit, feeding 40mm/min, when Φ 340mm hole being expanded to Φ 385mm with D385 drill bit, the rotating speed 55r/min of D385 drill bit, feeding 30mm/min, when Φ 385mm hole being expanded to Φ 470mm with D470 drill bit, the rotating speed 40r/min of D470 drill bit, feeding 28mm/min.
6. 600MW high pressure main regulation valve body of steam rough machining method according to claim 1, it is characterized in that: when reaching Φ 172mm with the admission opening (14) that D172 drill bit processes the second pitch large flange end face side opening in described step 6, the rotating speed 110r/min of D172 drill bit, feeding 44mm/min.
7. 600MW high pressure main regulation valve body of steam rough machining method according to claim 6, it is characterized in that: when the admission end processing the admission opening (14) of the second pitch large flange end face side opening in described step 6 with D250 drill bit reaches Φ 250mm, the rotating speed 75r/min of D250 drill bit, feeding 30mm/min, when Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, the rotating speed 55r/min of D335 drill bit, feeding 30mm/min.
8. 600MW high pressure main regulation valve body of steam rough machining method according to claim 1, it is characterized in that: in described step 7 with D172 drill bit process steam vent (15) reach Φ 172mm time, the rotating speed 110r/min of D172 drill bit, feeding 44mm/min, when Φ 172mm hole being expanded to Φ 250mm with D250 drill bit, the rotating speed 75r/min of D250 drill bit, feeding 30mm/min.
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