CN103769808A - Method for roughly machining 600 MW high and medium pressure main steam adjusting valve and jig of 600 MW high and medium pressure main steam adjusting valve - Google Patents
Method for roughly machining 600 MW high and medium pressure main steam adjusting valve and jig of 600 MW high and medium pressure main steam adjusting valve Download PDFInfo
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- CN103769808A CN103769808A CN201310711786.3A CN201310711786A CN103769808A CN 103769808 A CN103769808 A CN 103769808A CN 201310711786 A CN201310711786 A CN 201310711786A CN 103769808 A CN103769808 A CN 103769808A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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- 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
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Abstract
The invention relates to a method for roughly machining a valve shell and a jig, in particular to a method for roughly machining a 600 MW high and medium pressure main steam adjusting valve and a jig of the 600 MW high and medium pressure main steam adjusting valve to solve the problem that the time taken for aligning in the method for roughly machining the 600 MW high and medium pressure main steam adjusting valve is long. The method comprises the step of machining datum planes, the step of adjusting the height of a left base plate and the height of a right base plate of the jig, the step of clamping a valve body, the step of machining a side hole in an end face of a first door adjusting large flange, the step of machining a main steam door hole, the step of machining a side hole in end of a second door adjusting large flange and a second door adjusting steam inlet hole, the step of machining a steam outlet hole, the step of taking out an expansion plug, the step of machining a left shaped line and a right shaped line in a ball cavity, the step of machining an upper shaped line and a lower shaped line in a first lantern cavity, the step of machining an upper shaped line and a lower shaped line in a second lantern cavity, the step of machining two first bottom shaped lines in the first lantern cavity and the second lantern cavity, and the step of fine turning a second bottom shaped line in the ball cavity. According to the jig, the valve body is placed on the left base plate and the right base plate, and a left strut, a middle strut and a right strut are supported by the valve body. The method and the jig are used for machining the 600 MW high and medium pressure main steam adjusting valve.
Description
Technical field
The present invention relates to a kind of valve casing rough machining method and clamp, be specifically related to a kind of 600MW high pressure main regulation valve body of steam rough machining method and fixture thereof, belong to field of machining.
Background technology
Traditional valve casing roughing clamping mainly contains two kinds of modes, one is that each valve body mouth of pipe horizontal positioned is directly dropped on workbench, use multiple different jack to carry out the water detection of multi-point support adjustment height flat, bind on workbench through valve outer wall by many ropes simultaneously, and compress at valve body side welding pressing plate lug; Another kind is to make corresponding V-type parallels according to body size to be clamped on main inlet throttle-stop valve side outer wall, and the other end uses jack to carry out leveling, welding pressing plate lug is compressed 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 the clamping centering time is longer, need to adjust simultaneously and make after multiple jack height the valve body can levelling capturing, this has just caused clamping centering to occupy the plenty of time of 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 more than 300 large aperture of φ and the processing of cross bore, the processing of tradition large diameter hole is all on radial drill, to adopt the mode that expands boring of boring, use plurality of specifications reamer to carry out many grades of aperture reaming processing, cause the low situation of hole, large aperture working (machining) efficiency, 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 have all restricted 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, the centering time is long, cause the low problem of associating valve casing working (machining) efficiency, and then propose a kind of 600MW high pressure main regulation valve body of steam roughing fixture and processing method.
The present invention addresses the above problem the technical scheme of taking to be:
Processing method of the present invention realizes by following steps: step 1, process each datum level: utilize the large end face of flange of main inlet throttle-stop valve end face, adjustment doors, 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 on Boring machine processing valve body;
Step 4, process the large end face of flange side opening of the first pitch: by large the adjustment doors of valve body end face of flange just to deep hole drilling machine main shaft, sealing shroud and the valve body surface of deep hole drilling machine oil head are adjacent to, process the large end face of flange side opening of the first pitch with D172 drill bit and reach Φ 172mm, with φ 172mm expansible stopper by the admission end jam-pack of the large end face of flange side opening of the first pitch, the admission end of processing the large end face of flange side opening of the first pitch with D250 drill bit reaches Φ 250mm, the 335mm to Φ is expanded in Φ 250mm hole with D335 drill bit, with φ 335mm expansible stopper by the large end face of flange side opening of the first pitch 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, process main inlet throttle-stop valve hole with D335 drill bit and reach Φ 335mm, the 340mm to Φ is expanded in Φ 335mm hole with D340 drill bit, Φ 340mm hole is expanded to Φ 385mm, hole depth 1650mm with D385 drill bit, Φ 385mm hole is expanded to Φ 470mm, hole depth 615mm with D470 drill bit;
Step 6, the large end face of flange side opening of processing the second pitch: rotary table makes the large end face of flange of the adjustment doors of valve body just to deep hole drilling machine main shaft, sealing shroud and the valve body surface of deep hole drilling machine oil head are adjacent to, process the large end face of flange side opening of the second pitch with D172 drill bit and reach Φ 172mm, D250 drill bit is processed large end face of flange side opening and is reached Φ 250mm, the 335mm to Φ is expanded in Φ 250mm hole with D335 drill bit, with φ 335mm expansible stopper by the large end face of flange side opening of the second pitch jam-pack;
Step 7, processing the second pitch admission opening: rotary table makes the second pitch air intake end face of valve body just to deep hole drilling machine main shaft, sealing shroud and the valve body surface of deep hole drilling machine oil head are adjacent to, process the second pitch admission opening with D172 drill bit and reach Φ 172mm, use φ 172mm expansible stopper by the admission end jam-pack of the second pitch admission opening;
Step 9, taking-up expansible stopper: after the process finishing of each hole, each expansible stopper is taken out, turn lower order;
Levorotation line and right molded line in step 13, processing ball chamber: on numerical control Q1-155 boring machine, reach figure paper size according to numerical control program by laterally cutter being processed to levorotation line and right molded line;
Molded line and second time molded line on step 15, processing second in the second lantern chamber: on numerical control Q1-155 boring machine according to numerical control program by laterally cutter first being processed to molded line on second in the second lantern chamber, reprocess second time molded line;
Two the first bottom molded line in step 10 six, processing the first lantern chamber and the second lantern chamber: on numerical control Q1-155 boring machine according to numerical control program by longitudinally cutter first being processed to two the first bottom molded line in the first lantern chamber and the second lantern chamber;
Fixture of the present invention comprises base, left pressing plate, right pressing plate, left backing plate, right backing plate, two left pillars, two right pillars, two middle bilge cods, six valve body bearings, six several the first Connection Elements of valve body bearing and several the second Connection Element, base 1 comprises base plate, riser, left support abutment and right support abutment, riser is vertically set on the upper surface of base plate, left support abutment and right support abutment are separately positioned on the two ends of riser, the surrounding of base plate is provided with U-shaped groove, left backing plate and right backing plate are separately positioned on the upper surface of left support abutment and right support abutment, valve body is placed on left backing plate and right backing plate, below left datum level, be provided with two left pillars, two left pillars are symmetrical arranged take riser as benchmark, the lower end of each left pillar is connected with base by a valve body bearing, below the datum level of middle part, be provided with two middle bilge cods, two middle bilge cods are symmetrical arranged take riser as benchmark, the lower end of each middle bilge cod is connected with base by a valve body bearing, below right datum level, be provided with two right pillars, two right pillars are symmetrical arranged take riser as benchmark, the lower end of each right pillar is connected with base by a valve body bearing, each valve body bearing is connected with base by the first Connection Element, left pressing plate and right pressing plate are separately positioned on the upper end of valve body, left pressing plate is connected with base by several the second Connection Elements respectively with right pressing plate.
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, reduced a large amount of clamping time and centering time, utilize numerical control borer Drilling operation to replace traditional diamond-making technique to guarantee the highly-efficient processing of valve body.
Two, the present invention has improved the rough machined process of the solid valve casing of 600MW steam turbine high pressure main vapour adjusting associating, has solved the difficult problem that solid valve casing conventional method working (machining) efficiency is low and major diameter cross bore is processed.
Accompanying drawing explanation
Fig. 1 is the position view of the each datum level of valve body M in the step 1 of the specific embodiment one;
Fig. 2 is the K-K cutaway view of Fig. 1;
Fig. 3 processes the schematic diagram that the first pitch air inlet/outlet 10 is Φ 172mm in the step 4 of the specific embodiment one;
Fig. 4 is the position view of filling in the first pitch air inlet/outlet 10 in the step 4 of the specific embodiment one with φ 172mm expansible stopper 11;
Fig. 5 is the position view of filling in the first pitch air inlet/outlet 10 in the step 4 of the specific embodiment 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 the specific embodiment one;
Fig. 7 processes the schematic diagram of main inlet throttle-stop valve hole 13 for Φ 340mm, Φ 385mm and Φ 470mm in the step 5 of the specific embodiment one;
Fig. 8 is the schematic diagram of step 6 and the step 7 of the specific embodiment one;
Fig. 9 is the schematic diagram of step 9, step 10 and the step 11 of the specific embodiment one;
Figure 10 is the schematic diagram of the step 12 of the specific embodiment one;
Figure 11 is the schematic diagram of the step 13 of the specific embodiment one;
Figure 12 is the schematic diagram of the step 14 of the specific embodiment one;
Figure 13 is the II partial enlarged drawing (being the schematic diagram of the step 15 of the specific embodiment one) of Figure 11 and Figure 12;
Figure 14 is the I partial enlarged drawing (being the schematic diagram of the step 10 six of the specific embodiment 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.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1～Figure 14, present embodiment is described, present embodiment realizes by following steps:
Step 1, process each datum level: utilize the large end face of flange B of main inlet throttle-stop valve end face A, adjustment doors, admission mouth of pipe end face C and steam outlet pipe mouth end face D, left datum level E and right datum level F on common boring machine (lathe model HC212) processing valve body M, see Fig. 1 and Fig. 2;
Step 4, process the large end face of flange side opening 10 of the first pitch: by large the adjustment doors of valve body M end face of flange B just to deep hole drilling machine main shaft, sealing shroud and the valve body M surface of deep hole drilling machine oil head are adjacent to, process the large end face of flange side opening 10 of the first pitch with D172 drill bit and reach Φ 172mm, see Fig. 3, with φ 172mm expansible stopper 11 by the admission end jam-pack of the large end face of flange side opening 10 of the first pitch, see Fig. 4, the admission end of processing the large end face of flange side opening 10 of the first pitch with D250 drill bit reaches Φ 250mm, see Fig. 4, the 335mm to Φ is expanded in Φ 250mm hole with D335 drill bit, see Fig. 5, with φ 335mm expansible stopper 12 by large end face of flange side opening 10 jam-packs of the first pitch, 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, process main inlet throttle-stop valve hole 13 with D335 drill bit and reach Φ 335mm, see Fig. 6, the 340mm to Φ is expanded in Φ 335mm hole with D340 drill bit, Φ 340mm hole is expanded to Φ 385mm, hole depth 1650mm with D385 drill bit, Φ 385mm hole is expanded to Φ 470mm, hole depth 615mm with D470 drill bit, seen Fig. 7;
Step 6, processing the second pitch large end face of flange side opening 14 ': rotary table makes the large end face of flange B of the adjustment doors of valve body M just to deep hole drilling machine main shaft, sealing shroud and the valve body M surface of deep hole drilling machine oil head are adjacent to, process the large end face of flange side opening 14 of the second pitch ' reach Φ 172mm with D172 drill bit, see Fig. 8, process large end face of flange side opening 14 ' reach Φ 250mm with D250 drill bit, the 335mm to Φ is expanded in Φ 250mm hole with D335 drill bit, see Fig. 8, by the large end face of flange side opening of the second pitch 14 ' jam-pack, see Fig. 8 with φ 335mm expansible stopper 12;
Step 7, processing the second pitch admission opening 14: rotary table makes the second pitch air intake end face D ' of valve body M just to deep hole drilling machine main shaft, sealing shroud and the valve body M surface of deep hole drilling machine oil head are adjacent to, process the second pitch admission opening 14 with D172 drill bit and reach Φ 172mm, see Fig. 8, by the admission end jam-pack of the second pitch admission opening 14, see Fig. 8 with φ 172mm expansible stopper 11;
Step 9, taking-up expansible stopper: after the process finishing of each hole, each expansible stopper is taken out, turn lower order;
Molded line 22 and first time molded line 23 on step 14, processing 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 to molded line 22 on first in the first lantern chamber 17, i.e. 191.4 straight lines, 184 straight lines, R100 circular arc and 45 ° of inclined-planes in processing left side, reprocess first time molded line 23, process 191.4 straight lines, 184 straight lines, R100 circular arc and 45 ° of inclined-plane molded line on right side, see Figure 11;
Molded line 24 and second time molded line 25 on step 15, processing 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 to molded line 24 on second in the second lantern chamber 19, i.e. 131.4 straight lines, 124 straight lines, R100 circular arc and 45 ° of inclined-planes in processing left side, reprocess second time molded line 25, process 131.4 straight lines, 124 straight lines, R100 circular arc and 45 ° of inclined-plane molded line on right side, see Figure 12;
The specific embodiment two: in conjunction with Fig. 3, present embodiment is described, present embodiment is when processing the first pitch air inlet/outlet 10 and reach Φ 172mm with D172 drill bit in step 4, rotating speed 110r/min, the feeding 44mm/min of D172 drill bit.Other step is identical with the specific embodiment one.
The specific embodiment three: present embodiment is described in conjunction with Fig. 4 and Fig. 5, present embodiment is while reaching Φ 250mm with the admission end that D250 drill bit is processed the first pitch air inlet/outlet 10 in step 4, rotating speed 75r/min, the feeding 30mm/min of D250 drill bit, while Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, rotating speed 55r/min, the feeding 26mm/min of D335 drill bit.Other step is identical with the specific embodiment two.
The specific embodiment four: present embodiment is described in conjunction with Fig. 6, present embodiment is while reaching Φ 335mm with D335 drill bit processing main inlet throttle-stop valve hole 13 in step 5, rotating speed 55r/min, the feeding 26mm/min of D335 drill bit, in the time that D335 drill bit is fed to the Φ 335mm of the large end face of flange side opening 10 of the first pitch, the rotating speed of D335 drill bit reduces by half (being rotating speed 27.5r/min), feeding reduces by half (being feeding 13mm/min).Other step is identical with the specific embodiment one.
The specific embodiment five: present embodiment is described in conjunction with Fig. 7, present embodiment is while Φ 335mm hole being expanded to Φ 340mm with D340 drill bit in step 5, rotating speed 55r/min, the feeding 40mm/min of D340 drill bit, while Φ 340mm hole being expanded to Φ 385mm with D385 drill bit, rotating speed 55r/min, the feeding 30mm/min of D385 drill bit, while Φ 385mm hole being expanded to Φ 470mm with D470 drill bit, rotating speed 40r/min, the feeding 28mm/min of D470 drill bit.Other step is identical with the specific embodiment four.
The specific embodiment six: in conjunction with Fig. 8, present embodiment is described, present embodiment is when processing the second pitch air inlet/outlet 14 and reach Φ 172mm with D172 drill bit in step 6, rotating speed 110r/min, the feeding 44mm/min of D172 drill bit.Other step is identical with the specific embodiment one.
The specific embodiment seven: present embodiment is described in conjunction with Fig. 8, present embodiment is while reaching Φ 250mm with the admission end that D250 drill bit is processed the second pitch air inlet/outlet 14 in step 6, rotating speed 75r/min, the feeding 30mm/min of D250 drill bit, while Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, rotating speed 55r/min, the feeding 30mm/min of D335 drill bit.Other step is identical with the specific embodiment six.
The specific embodiment eight: present embodiment is described in conjunction with Fig. 8, present embodiment is when processing pore 15 and reach Φ 172mm with D172 drill bit in step 7, rotating speed 110r/min, the feeding 44mm/min of D172 drill bit, while Φ 172mm hole being expanded to Φ 250mm with D250 drill bit, rotating speed 75r/min, the feeding 30mm/min of D250 drill bit.Other step is identical with the specific embodiment one.
The specific embodiment nine: in conjunction with Figure 15～Figure 22, present embodiment is described, 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 the first Connection Elements 27 of valve body bearing 3 and several the 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 is vertically set on the upper surface of base plate 1-1, and left support abutment 1-3 and right support abutment 1-4 are 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 weld with base plate 1-1, left support abutment 1-3 and right support abutment 1-4 play the effect of supporting valve body M, the both sides of the both sides of left support abutment 1-3 and 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, reduce and cause base plate 1-1 distortion because valve body M is overweight, the surrounding of base plate 1-1 is provided with U-shaped groove 1-6, and U-shaped groove 1-6 is for tight with workbench handle by base 1 by bolt, 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 the processing of valve body M and right datum level F drop on left backing plate 4 and right backing plate 5, after the center line N-N of assurance valve body M installation rear valve body M is 950mm to worktable upper surface distance, below left datum level E, be provided with two left pillars 6, two left pillars 6 are symmetrical arranged take riser 1-2 as benchmark, the lower end of each left pillar 6 is connected with base 1 by a valve body bearing 9, below the datum level G of middle part, be provided with two middle bilge cods 8, two middle bilge cods 8 are symmetrical arranged take riser 1-2 as benchmark, the lower end of each middle bilge cod 8 is connected with base 1 by a valve body bearing 9, below right datum level F, be provided with two right pillars 7, two right pillars 7 are symmetrical arranged take riser 1-2 as benchmark, 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 by several the second Connection Elements 28 respectively with right pressing plate 3.
The specific embodiment ten: in conjunction with Figure 23 and Figure 24, present embodiment is described, the valve body bearing 9 of present embodiment comprises support plate 9-1 and an oblique piece 9-2, tiltedly props up piece 9-2 and is arranged on one end of support plate 9-1 upper surface, and tiltedly props up inclined-plane on piece 9-2 outwardly.Other composition and annexation are identical with the specific embodiment nine.
Claims (10)
1. a 600MW high pressure main regulation valve body of steam rough machining method, is characterized in that: described method realizes by following steps:
Step 1, process each datum level: utilize main inlet throttle-stop valve end face (A), the large end face of flange of adjustment doors (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) on Boring machine processing valve body (M);
Step 2, adjust the left backing plate of fixture (4) and the height of right backing plate (5): the numerical value 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 center line (N-N) of valve body (M), left backing plate (4) on adjustment fixture and the thickness of right backing plate (5), guarantee that it is 950mm that valve body (M) is installed center line (N-N) to the worktable upper surface distance of rear valve body (M);
Step 3, clamping valve body (M): valve body (M) mouth of pipe horizontal positioned, the left support abutment (1-3) and the right support abutment (1-4) that valve body (M) are placed in to fixture are upper, utilize fixture to be fixed clamping to valve body (M);
Step 4, process the first large end face of flange side opening of pitch (10): by the large end face of flange of adjustment doors (B) of valve body (M) just to deep hole drilling machine main shaft, sealing shroud and valve body (M) surface of deep hole drilling machine oil head are adjacent to, process the first large end face of flange side opening of pitch (10) with D172 drill bit and reach Φ 172mm, with φ 172mm expansible stopper (11) by the admission end jam-pack of the first large end face of flange side opening of pitch (10), the admission end of processing the first large end face of flange side opening of pitch (10) with D250 drill bit reaches Φ 250mm, the 335mm to Φ is expanded in Φ 250mm hole with D335 drill bit, with φ 335mm expansible stopper (12) by the first large end face of flange side opening of pitch (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, process main inlet throttle-stop valve hole (13) with D335 drill bit and reach Φ 335mm, the 340mm to Φ is expanded in Φ 335mm hole with D340 drill bit, Φ 340mm hole is expanded to Φ 385mm, hole depth 1650mm with D385 drill bit, Φ 385mm hole is expanded to Φ 470mm, hole depth 615mm with D470 drill bit;
Step 6, processing the second large end face of flange side opening of pitch (14 '): rotary table makes the large end face of flange of adjustment doors (B) of valve body (M) just to deep hole drilling machine main shaft, sealing shroud and valve body (M) surface of deep hole drilling machine oil head are adjacent to, process the second large end face of flange side opening of pitch (14 ') with D172 drill bit and reach Φ 172mm, process large end face of flange side opening (14 ') with D250 drill bit and reach Φ 250mm, the 335mm to Φ is expanded in Φ 250mm hole with D335 drill bit, with φ 335mm expansible stopper (12) by the second large end face of flange side opening of pitch (14 ') jam-pack;
Step 7, processing the second pitch admission opening (14): rotary table makes the second pitch air intake end face (D ') of valve body (M) just to deep hole drilling machine main shaft, sealing shroud and valve body (M) surface of deep hole drilling machine oil head are adjacent to, process the second pitch admission opening (14) with D172 drill bit and reach Φ 172mm, with φ 172mm expansible stopper, ((11) are by the admission end jam-pack of the second pitch admission opening (14);
Step 8, process steam vent (15): make the venthole end face (C) of valve body (M) just to deep hole drilling machine main shaft, sealing shroud and valve body (M) surface of deep hole drilling machine oil head are adjacent to, process steam vent (15) with D172 drill bit and reach Φ 172mm, the 250mm to Φ is expanded in Φ 172mm hole with D250 drill bit;
Step 9, taking-up expansible stopper: after the process finishing of each hole, each expansible stopper is taken out, turn lower order;
Step 10, processing ball chamber (16): on numerical control 200 boring machines, heavy boring ball chamber (16) reaches SR350mm ± 1mm;
Step 11, processing the first lantern chamber (17): on 200 numerical control borers, heavy boring the first lantern chamber (17) reaches φ 450mm, and 45 ° of conical surfaces of heavy boring (18) also stay 5mm surplus;
Step 12, processing the second lantern chamber (19): on 200 numerical control borers, heavy boring the second lantern chamber (19) reaches φ 510mm, stays 35mm surplus;
Step 13, processing ball chamber (16) interior levorotation lines (20) and right molded line (21): on numerical control Q1-155 boring machine according to numerical control program by laterally cutter being processed to levorotation line (20) and right molded line (21) reaches figure paper size;
Molded line (22) and first time molded line (23) on step 14, processing 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 to molded line (22) on first in the first lantern chamber (17), reprocess first time molded line (23);
Molded line (24) and second time molded line (25) on step 15, processing 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 to molded line (24) on second in the second lantern chamber (19), reprocess second time molded line (25);
Step 10 six, processing the first lantern chamber (17) and interior two the first bottom molded line (26) in the second lantern chamber (19): on numerical control Q1-155 boring machine according to numerical control program by longitudinally cutter first being processed to interior two the first bottom molded line (26) in the first lantern chamber (17) and the second lantern chamber (19);
The second bottom molded line (27) in step 10 seven, finish turning ball chamber (16): utilize the second bottom molded line (27) in numerical control program finish turning ball chamber (16), the sharp corner of the each working position of last pincers worker polishing valve body (M) 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: when processing the first large end face of flange side opening of pitch (10) and reach Φ 172mm with D172 drill bit in described step 4, rotating speed 110r/min, the feeding 44mm/min of D172 drill bit.
3. 600MW high pressure main regulation valve body of steam rough machining method according to claim 2, it is characterized in that: while reaching Φ 250mm with the admission end that D250 drill bit is processed the first large end face of flange side opening of pitch (10) in described step 4, rotating speed 75r/min, the feeding 30mm/min of D250 drill bit, while Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, rotating speed 55r/min, the feeding 26mm/min of D335 drill bit.
4. 600MW high pressure main regulation valve body of steam rough machining method according to claim 1, it is characterized in that: while reaching Φ 335mm with D335 drill bit processing main inlet throttle-stop valve hole (13) in described step 5, rotating speed 55r/min, the feeding 26mm/min of D335 drill bit, in the time that D335 drill bit is fed to the Φ 335mm of the first large end face of flange side opening of pitch (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: while Φ 335mm hole being expanded to Φ 340mm with D340 drill bit in described step 5, rotating speed 55r/min, the feeding 40mm/min of D340 drill bit, while Φ 340mm hole being expanded to Φ 385mm with D385 drill bit, rotating speed 55r/min, the feeding 30mm/min of D385 drill bit, while Φ 385mm hole being expanded to Φ 470mm with D470 drill bit, rotating speed 40r/min, the feeding 28mm/min of D470 drill bit.
6. 600MW high pressure main regulation valve body of steam rough machining method according to claim 1, it is characterized in that: when processing the second pitch admission opening (14) and reach Φ 172mm with D172 drill bit in described step 6, rotating speed 110r/min, the feeding 44mm/min of D172 drill bit.
7. 600MW high pressure main regulation valve body of steam rough machining method according to claim 6, it is characterized in that: while reaching Φ 250mm with the admission end that D250 drill bit is processed the second pitch admission opening (14) in described step 6, rotating speed 75r/min, the feeding 30mm/min of D250 drill bit, while Φ 250mm hole being expanded to Φ 335mm with D335 drill bit, rotating speed 55r/min, the feeding 30mm/min of D335 drill bit.
8. 600MW high pressure main regulation valve body of steam rough machining method according to claim 1, it is characterized in that: when processing pore (15) and reach Φ 172mm with D172 drill bit in described step 7, rotating speed 110r/min, the feeding 44mm/min of D172 drill bit, while Φ 172mm hole being expanded to Φ 250mm with D250 drill bit, rotating speed 75r/min, the feeding 30mm/min of D250 drill bit.
9. realize the fixture of 600MW high pressure main regulation valve body of steam rough machining method for one kind, it is characterized in that: described fixture 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), several the first Connection Elements of six valve body bearings (3) (27) and several the 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) is vertically set on the upper surface of base plate (1-1), left support abutment (1-3) and right support abutment (1-4) are separately positioned on the two ends of riser (1-2), the surrounding of base plate (1-1) is provided with U-shaped groove (1-6), 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), left datum level (E) is provided with two left pillars (6) below, two left pillars (6) are symmetrical arranged take riser (1-2) as benchmark, the lower end of each left pillar (6) is connected with base (1) by a valve body bearing (9), middle part datum level (G) is provided with two middle bilge cods (8) below, two middle bilge cods (8) are symmetrical arranged take riser (1-2) as benchmark, the lower end of each middle bilge cod (8) is connected with base (1) by a valve body bearing (9), right datum level (F) is provided with two right pillars (7) below, two right pillars (7) are symmetrical arranged take riser (1-2) as benchmark, 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) by several the second Connection Elements (28) respectively with right pressing plate (3).
10. the rough machined fixture of 600MW high pressure main regulation valve body of steam according to claim 9, it is characterized in that: described valve body bearing (9) comprises support plate (9-1) and tiltedly props up piece (9-2), tiltedly a piece (9-2) is arranged on one end of support plate (9-1) upper surface, and tiltedly props up inclined-plane on piece (9-2) outwardly.
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Effective date of registration: 20230303 Address after: 150000 building 3, high tech production base, Nangang District, Harbin City, Heilongjiang Province Patentee after: HARBIN TURBINE Co.,Ltd. Patentee after: Harbin Electric Power Generation Equipment National Engineering Research Center Co.,Ltd. Address before: 150046 No. three power road 345, Xiangfang District, Heilongjiang, Harbin Patentee before: HARBIN TURBINE Co.,Ltd. |