CN103240567A - Bonnet support processing method and clamp and processing equipment for bonnet support - Google Patents
Bonnet support processing method and clamp and processing equipment for bonnet support Download PDFInfo
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- CN103240567A CN103240567A CN2012100304633A CN201210030463A CN103240567A CN 103240567 A CN103240567 A CN 103240567A CN 2012100304633 A CN2012100304633 A CN 2012100304633A CN 201210030463 A CN201210030463 A CN 201210030463A CN 103240567 A CN103240567 A CN 103240567A
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Abstract
The invention discloses a bonnet support processing method and clamp and processing equipment for a bonnet support. The bonnet support processing method includes fixing a bonnet support through the special clamp to enable the central line of the bonnet support to be coaxial with the processing equipment; cutting a flange plane and an end face of a valve rod nut through the processing equipment; changing a cutter, rough-boring or fine-boring a valve rod nut hole, assembling a seal seat and a gland box; changing a cutter to enable the cutter to be coaxial with the processing equipment, rotating a rotation disc at 180 degrees, and finish-milling a thread of the valve rod nut; changing a cutter to enable the cutter to be coaxial with the processing equipment, rotating the rotation disc at 180 degrees, and drilling a flange hole; rotating the rotation disc at 90 degrees, and drilling an eyelet bolt hole and a lubrication hole of the valve rod nut on the support; changing a cutter, rotating the rotation disc at 90 degrees, scraping reversely and facing the back end face of the flange hole; and after finishing processing the back end face of the flange hole, disassembling the bonnet support. By the bonnet support processing method, processing on components can be finished through being clamped only once, and product processing accuracy and quality are improved.
Description
Technical field
The present invention relates to the valve manufacture field, relate to a kind of valve gap support processing method specifically, be used for anchor clamps and the process equipment of processing valve gap support.
Background technology
The valve gap support is the main core component of valve, sees Fig. 1, Fig. 2 and Fig. 3, and this valve gap support comprises support and valve gap, and described support and valve gap are monoblock type, also can be for split type, and the valve gap support shown in the figure is monoblock type.As we know from the figure, described support is provided with valve stem nut hole, eyelet bolt hole, the lubricated screw of valve stem nut, and described valve gap is provided with flange, upper seal support, stuffing-box, offers several flange holes on the described flange.This valve gap support has very high axiality requirement to the stem shaft cording, stem shaft system and flange face had very high perpendicularity requirement, sealing surface is stressed evenly in the time of could guaranteeing valve opening like this, and the On/Off process does not have the stifled phenomenon of card, packing box seal dependable performance.
Usually adopt vertical lathe, sleeping carriage and drilling machine to process valve valve gap support in the existing technology, limited by process equipment, large bore valves can only adopt split type valve gap support, need multiple clamping just can finish whole processing in the process, make a row position tolerance not reach requirement, make valve opening and closing moment, sealing surface unbalance stress, sealing effectiveness is poor, stuffing-box is fragile, thereby causes unstable product quality, and the processing cost height.
Summary of the invention
Technical problem to be solved by this invention provides a kind of valve gap support processing method, in the process of using this processing method processing valve gap support, only needs a clamping valve gap support just can finish the processing at each position of valve gap support.For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of valve gap support processing method, described valve gap support comprises support and valve gap, described support is provided with the lubricated screw of valve stem nut hole, eyelet bolt hole and valve stem nut, described valve gap is provided with flange, upper seal support and stuffing-box, described flange is provided with several flange holes, the process equipment of processing valve gap support is provided with rotary disk, and described rotary disk is provided with special fixture, said method comprising the steps of:
1) the fixing described valve gap support of described special fixture makes the center line of valve gap support coaxial with the main shaft of process equipment;
2) described process equipment cutting Flange Plane; The angle of rotary disk Rotate 180 °, cutting valve stem nut hole end surface have been cut after the Flange Plane;
3) cut the valve stem nut hole end surface after, change cutter, heavy boring valve stem nut hole; Behind the intact valve stem nut hole of heavy boring, right boring valve stem nut hole; Behind the intact valve stem nut hole of right boring, the angle of rotary disk Rotate 180 °, heavy boring upper seal support; Behind the intact upper seal support of heavy boring, the right boring upper seal support; Behind the intact upper seal support of right boring, the heavy boring stuffing-box; Behind the intact stuffing-box of heavy boring, the right boring stuffing-box;
4) behind the intact stuffing-box of right boring, change cutter, make cutter coaxial with the main shaft of process equipment, the angle of rotary disk Rotate 180 °, finish-milling valve stem nut hole screw thread;
5) behind the screw thread of the intact valve stem nut hole of finish-milling, change cutter, make cutter coaxial with the main shaft of process equipment, the angle of panoramic table Rotate 180 °, brill flange hole; The angle of panoramic table half-twist is bored eyelet bolt hole and the lubricated screw of valve stem nut on the support;
6) change cutter, the angle of panoramic table half-twist, the anti-ream plane face flange hole rear end face of scraping;
7) process the flange hole rear end face after, unload the bottom flange support.
Further, described process equipment all uses U axle processing Flange Plane, valve stem nut hole end surface, upper seal support, stuffing-box, valve stem nut hole and flange hole rear end face.
Further, described process equipment uses three interpolation processing valve stem nut hole screw threads.
Preferably, the valve gap support blank that described valve gap support is acceptance(check) on request, described valve gap support blank is forging or foundry goods.
Further, described valve gap support is used for the above gate valve of inside nominal diameter DN80, above above check-valves or the above Direct Travel control valve of DN25 of stop valve, DN50 of DN50.
When using this method to process all-in-one-piece valve gap support, utilize clamping workpiece of rotary disk rotation positioning function just can finish the processing of valve gap support multi-section position, avoided the machining accuracy of the reduction part that the multiple clamping workpiece brings in the prior art, part form and position tolerance not to reach problems such as requirement, unstable product quality.Adopt this processing method to add and simplified the workpiece processing technology man-hour, efficiency increases substantially, and has guaranteed the perpendicularity of axiality, stem shaft system and the Flange Plane of stem shaft system, has improved valve gap support form and position tolerance machining accuracy.
Another technical problem to be solved by this invention provides a kind of valve gap support special fixture of realizing above-mentioned valve gap support processing method.For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of special fixture, be used for the standing valve lid support, described special fixture comprises base plate, described base plate is provided with back-up block, vertical rod and adjusts screw rod, described vertical rod is provided with briquetting, and the briquetting end face is provided with nut, and described nut is threaded with vertical rod, described adjustment screw rod is provided with the nut V-block, and described nut V-block is connected with the adjustment screw flight.
Further, also be fixed with V-block on the described base plate, first guide pad and second guide pad, described V-block is located between first guide pad and second guide pad, described back-up block comprises first back-up block, second back-up block, described first back-up block is located on first guide pad, second back-up block is located on second guide pad, described first back-up block, be provided with tie down screw in second back-up block, first back-up block, second back-up block all moves axially along tie down screw, described first back-up block is provided with first inclined-plane that contacts with described valve gap support, second back-up block is provided with second inclined-plane that contacts with described valve gap support, the nut V-block is provided with the 3rd inclined-plane that contacts with described valve gap support, the 4th inclined-plane, V-block are provided with the 5th inclined-plane that contacts with described valve gap support, the 6th inclined-plane.
Preferably, also comprise vertical rod seat, screw rod base and pressing plate, described screw rod base is connected with bed bolt, adjusts screw rod and is located on the screw rod base; Base plate is provided with groove, and described vertical rod seat is located in the groove, and vertical rod is located in the vertical rod seat, and described pressing plate is located on the end face of base plate and vertical rod seat and pressing plate is connected with vertical rod seat bolt.
During this special fixture standing valve lid support blank, the back-up block of anchor clamps and nut V-block be the two ends of support valve closure support respectively, briquetting is fixed on top and the pinched valve lid support blank of support, these anchor clamps adopt 3 fixed supports tightly to fix blank, the movement that makes blank in process, can not produce any direction, the machining accuracy of raising blank.
Another technical problem to be solved by this invention provides a kind of process equipment that comprises above-mentioned special fixture.For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of process equipment that comprises above-mentioned special fixture comprises lathe bed, and described lathe bed is provided with column, and described column connects main spindle box and moves up and down driving mechanism, and the described driving mechanism that moves up and down makes main spindle box move up and down along column; Described main spindle box comprises main shaft, is located at the facing head of spindle nose, on the described facing head cutter is housed; Described lathe bed is provided with slide unit and move left and right driving mechanism, and described move left and right driving mechanism makes slide unit along the lathe bed move left and right; Described slide unit is provided with workbench and moves forward and backward driving mechanism, and the described driving mechanism that moves forward and backward makes workbench move forward and backward along slide unit; Described workbench comprises end-toothed disc and the rotary disk of being located on the end-toothed disc end face; Described rotary disk is connected with described special fixture.
Further, described rotary disk is provided with locating slot, and described special fixture is provided with positioning key, and described positioning key cooperates with locating slot.
This process equipment is in the process of processing valve gap support, the valve gap support tightly is fixed on the special fixture, special fixture is fixed on the rotary disk of process equipment tightly by locating slot, and in process, workpiece and anchor clamps are motionless, but rotate and radial feed is realized processing to each position of valve gap support by the cutter on the process equipment facing head.Simultaneously, control the anglec of rotation of rotary disk by end-toothed disc, guarantee the accuracy of the anglec of rotation, and then guarantee the machining accuracy at each position of valve gap support, and then guarantee the form and position tolerance of valve gap support processing, improve the quality of products.
Description of drawings
Fig. 1 is the front view of valve gap support among the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the upward view of Fig. 1.
Fig. 4 is the structural representation of special-purpose anchor clamps among the present invention.
Fig. 5 is for being equipped with the front view of the special fixture of valve gap support among the present invention.
Fig. 6 is the vertical view of Fig. 5.
Fig. 7 is the structural representation of process equipment 4 among the present invention.
Fig. 8 is the front view of Fig. 7.
Fig. 9 is the vertical view of Fig. 7.
Figure 10 is the schematic diagram of tool feeding among process equipment one embodiment among the present invention.
Figure 11 is the counter schematic diagram of scraping the ream gang tool among process equipment one embodiment among the present invention.
The specific embodiment
The present invention relates to a kind of processing method of valve gap support, see Fig. 1, Fig. 2 and Fig. 3, described valve gap support comprises support 1 and valve gap 2, described support 1 is provided with the lubricated screw 13 of valve stem nut hole 11, eyelet bolt hole 12 and valve stem nut, described valve gap 2 is provided with flange 21, upper seal support 22 and stuffing-box 23, described flange 21 is provided with several flange holes 211, the process equipment 4 of processing valve gap support is provided with rotary disk 46, described rotary disk 46 is provided with special fixture 3, said method comprising the steps of:
1) described special fixture 3 fixing described valve gap supports make the center line 24 of valve gap support coaxial with the main shaft of process equipment 4;
2) described process equipment 4 cutting Flange Plane 212; The angle of rotary disk 46 Rotate 180s °, cutting valve stem nut hole end surface 111 have been cut after the Flange Plane 212;
3) cut valve stem nut hole end surface 111 after, change cutter, heavy boring valve stem nut hole 11; Behind the intact valve stem nut hole 11 of heavy boring, right boring valve stem nut hole 11; Behind the intact valve stem nut hole 11 of right boring, the angle of rotary disk 46 Rotate 180s °, heavy boring upper seal support 22; Behind the intact upper seal support 22 of heavy boring, right boring upper seal support 22; Behind the intact upper seal support 22 of right boring, heavy boring stuffing-box 23; Behind the intact stuffing-box 23 of heavy boring, right boring stuffing-box 23;
4) behind the intact stuffing-box 23 of right boring, change cutter, make cutter coaxial with the main shaft of process equipment 4, the angle of rotary disk 46 Rotate 180s °, finish-milling valve stem nut hole screw thread 112;
5) behind the intact valve stem nut hole of the finish-milling screw thread 112, change cutter, make cutter coaxial with the main shaft of process equipment 4, the angle of panoramic table 46 Rotate 180s °, brill flange hole 211; The angle of panoramic table 46 half-twists is bored eyelet bolt hole 12 and the lubricated screw 13 of valve stem nut on the support 1;
6) change cutter, the angle of panoramic table 46 half-twists, the anti-ream plane face flange hole rear end face 213 of scraping;
7) process flange hole rear end face 213 after, unload the bottom flange support.
Further, described process equipment 4 all uses U axle processing Flange Plane 212, valve stem nut hole end surface 111, upper seal support 22, stuffing-box 23, valve stem nut hole 11 and flange hole rear end face 213.So-called U axle processing just refers to cutter in rotation, and cutter head can be done radial feed along the knife rest end face and move.Preferably, the valve gap support blank that described valve gap support is acceptance(check) on request, described valve gap support blank is forging or foundry goods.Further, described process equipment 4 uses three (X, Y, Z axle) interpolation processing valve stem nut hole screw threads 112.Preferably, the material of described valve gap support is casting pig, spheroidal graphite cast-iron, casting or forges carbon steel, casting or forge stainless steel, casting or wrought alloy steel.Described valve gap support is used for the above gate valve of inside nominal diameter DN80, above above check-valves or the above Direct Travel control valve of DN25 of stop valve, DN50 of DN50, and the above gate valve of DN80 has following several: flange connects iron gate valve; Oil, gas industrial double-screw bolt connect the steel gate valve of valve gap; Pipeline steel flat gate valve processed; The cast iron gate valve; Valve gap is with bolted steel gate valve; The underground cylinder iron check valve of main armrest handle operation; Flange connects the cast iron gate valve; Flange or butt welding connect steel reducing gate valve; The steel gate valve that oil and natural gas industrial valves bonnet bolt connects; Oil plant is with small-sized carbon steel check valve; Oil plant is with 150 pounds of corrosion-resistant gate valves of thin-walled; Flange connects spheroidal graphite cast-iron check valve; Oil, petrochemistry and relevant industrial flange and the Wedge Gate Valves to welding; Petroleum industry connects rising stem (RS.) wedge-type cast iron gate valve with 125 pounds of level flanges; General check valve cylinder iron; General Parallel gate valve Parallel slide valve processed cylinder iron; The blue steel Parallel gate valve Parallel slide valve that connects of common usage; General wedge-type double-flashboard gate valve processed cylinder iron; Generally cylinder iron make parallel gate valve; General with the parallel gate valve of steel.The above stop valve of DN50 has following several: iron stop valve; Oil, petrochemical industry and related industries steel stop valve; Oil, petrochemistry and relevant industrial are with flange with to being welded to connect the steel stop valve; The blue steel stop valve that connects of common usage; General stop valve processed cylinder iron.The above check-valves of DN50 has following several: lift check valve; Oil, petrochemical industry and related industries lift check valve; Oil, petrochemistry and relevant industrial are connected the steel check-valves with flange with butt welding; The blue steel screw down nonreturn valve that connects of common usage; General screw down nonreturn valve processed cylinder iron; General check-valves processed cylinder iron; The steel swing check valve that oil, chemical industry and related industries are used; Iron swing check valve.The above Direct Travel control valve of DN25 has following several: pneumatic control valve; The industrial process control valve, traditional Direct Travel control valve adopts valve gap and actuator bracket to process assembling more respectively usually, adopt this processing technology can process the integral bonnet support, because a clamping machines, can guarantee the row position tolerance of valve gap support processing and the linearity of valve rod to greatest extent, and save machining period.Above-mentioned valve is the valve of JB, GB, ISO, API, BS series.
Further, the invention still further relates to a kind of special fixture 3, be used for the standing valve lid support, see Fig. 4, Fig. 5 and Fig. 6, described special fixture 3 comprises base plate 301, described base plate 301 is provided with back-up block 302, vertical rod 303 and adjusts screw rod 304, vertical rod 303 is located at back-up block 302 and is adjusted between the screw rod 304, described vertical rod 303 is provided with briquetting 305, briquetting 305 end faces are provided with nut 306, described nut 306 is threaded with vertical rod 303, and described adjustment screw rod 304 is provided with nut V-block 307, and described nut V-block 307 is threaded with adjustment screw rod 304.The support 1 of described valve gap support is provided with through hole 14, vertical rod 303 is located in the through hole 14, described back-up block 302 is used for clamping valve gap, nut V-block 307 is used for the support valve closure support, vertical rod 303 is provided with screw thread, by rotation nut 306 briquetting 305 is pressed on the end face of support 1 tightly, so just the valve gap support is fixed on the special fixture 3 tightly, preferably, described nut 306 is selected T type nut for use, compressing of valve gap support adopts rotation nut 306 to realize in the present embodiment, in addition also can be by pneumatic, mode electronic or hydraulic pressure realizes compressing of valve gap support.
Further, also be fixed with V-block 308 on the described base plate 301, first guide pad 309 and second guide pad 310, described V-block 308 is located between first guide pad 309 and second guide pad 310, described back-up block 302 comprises first back-up block 3021, second back-up block 3022, described first back-up block 3021 is located on first guide pad 309, second back-up block 3022 is located on second guide pad 310, described first back-up block 3021, be provided with tie down screw 311 in second back-up block 3022, during rotational lock screw rod 311, first back-up block 3021, second back-up block 3022 all moves axially along tie down screw 311.Preferably, described first back-up block 3021 is provided with right-hand thread, second back-up block 3022 is provided with left-hand thread, like this during rotational lock screw rod 311, first back-up block 3021 and second back-up block 3022 move or move to the direction near V-block 308 simultaneously to the direction away from V-block 308 simultaneously, and then realize loosening or tightening up of first back-up block 3021 and second back-up block 3022.Described first back-up block 3021 is provided with first inclined-plane 3023 that contacts with described valve gap support, second back-up block 3022 is provided with second inclined-plane 3024 that contacts with described valve gap support, nut V-block 307 is provided with the 3rd inclined-plane 3071, the 4th inclined-plane 3072 that contacts with described valve gap support, and V-block 308 is provided with the 5th inclined-plane 3081, the 6th inclined-plane 3082 that contacts with described valve gap support.Specifically, flange 21 former and later two end faces of valve gap support have all carried out chamfered, be installed in the valve gap support on the anchor clamps and after anchor clamps fix to clamp the valve gap support, see Fig. 5, described first back-up block 3021 and second back-up block 3022 clamp the valve gap support, first inclined-plane 3023 contacts with the front end face periphery 214 of flange 21, and second inclined-plane 3024 contacts with the rear end face periphery 215 of flange 21; Described the 5th inclined-plane 3081 all contacts with the outer circumference surface 216 of flange 21 with the 6th inclined-plane 3082, is used for an end of support valve closure support; Described the 3rd inclined-plane 3071, the 4th inclined-plane 3072 all contact with the outer circumference surface 111 in valve stem nut hole 11, are used for the other end of support valve closure support.Under the first, second, third, fourth, the 5th, the 6th inclined- plane 3023,3024,3071,3072,3081,3082 the situation of curvature less than the curvature of its clamping position curved surface, each inclined-plane can adopt other ruled surfaces such as semicircle, U-shaped.
Further, this special fixture 3 also comprises vertical rod seat 312, screw rod base 313 and pressing plate 314, and described screw rod base 313 is connected with base plate 301 bolts, adjusts screw rod 304 and is located on the screw rod base 313; Base plate 301 is provided with groove 3011, and described vertical rod seat 312 is located in the groove 3011, and vertical rod 303 is located in the vertical rod seat 312, and described pressing plate 314 is located on the end face of base plate 301 and vertical rod seat 312 and pressing plate 314 is connected with vertical rod seat 312 bolts.Vertical rod seat 312 can move in groove 3011, the position of screw rod base 313 on base plate 301 also can be adjusted, can adjust Upright post base 312, the particular location of screw rod base 313 on base plate 301 according to the size of the support valve rod blank of processing, base plate 301 is provided with a plurality of equidistant bolts hole, the position of screw rod base 313 is fixed on screw rod base 313 on the base plate 301 with bolt after determining well; After the position of vertical rod seat 312 is determined well, with bolt that pressing plate 314 is fixing with Upright post base 312.
The concrete operations that valve gap support blank is fixed on the special fixture 3 are: determine the position of Upright post base 312 and screw rod base 313 according to the size of blank, and use bolting; Adjust tie down screw 311, first back-up block 3021, second back-up block 3022 are tightened up; Blank put down gently put in the special fixture 3, be about to support 1 and be enclosed within on the column 303, namely column 303 is in through hole 14; Adjust tie down screw 311 again, first back-up block 3021, second back-up block 3022 are loosened; Screw rod 304 is adjusted in rotation again, namely adjusts the upper-lower position of nut V-block 307, makes the blank level; Rotation T type nut 306 makes briquetting 305 press blank, and blank is in clamped condition; Adjust tie down screw 311 at last again, first back-up block 3021, second back-up block 3022 are tightened up, the flange 21 that is about to blank is fixed between first back-up block 3021 and second back-up block 3022, makes blank be in clamped condition.Preferably, adopt adjustment tie down screw 311 to realize anchor clamps to the clamping of workpiece in the present embodiment, also can realize by air pressure locking or hydraulic locking in addition.
The invention still further relates to a kind of process equipment 4 that comprises special fixture described above 3, see Fig. 7, Fig. 8 and Fig. 9, the main shaft of this process equipment 4 is level (Z-direction), described process equipment 4 comprises lathe bed 41, described lathe bed 41 is provided with column 42, described column 42 connects main spindle box 43 and moves up and down driving mechanism, and the described driving mechanism that moves up and down makes main spindle box 43 move up and down (moving up and down in Y direction) along column 42; Described main spindle box 43 comprises main shaft, is located at the facing head of spindle nose, on the described facing head cutter is housed; Described lathe bed 41 is provided with slide unit 44 and move left and right driving mechanism, and described move left and right driving mechanism makes slide unit 44 along lathe bed 41 move left and right (in the Z-direction move left and right); Described slide unit 44 is provided with workbench 45 and moves forward and backward driving mechanism, and the described driving mechanism that moves forward and backward makes workbench 45 move forward and backward (moving forward and backward in X-direction) along slide unit 44; Described workbench 45 comprises end-toothed disc and the rotary disk of being located on the end-toothed disc end face 46; Described rotary disk 46 is connected with described special fixture 3, and described workbench 45 can be monoblock type with rotary disk 46, also can be for split type.Preferably, described rotary disk 46 is provided with locating slot 461, and described special fixture 3 is provided with positioning key 315, and described positioning key 315 cooperates with locating slot 461.
During processing valve gap support, earlier valve gap support blank is fixed on the special fixture 3, again special fixture 3 is contained on the rotary disk 46, adjust the position of slide unit 44, workbench 45, rotary disk 46 and main spindle box 43 on the process equipment 4, make the center line 24 of valve gap support coaxial with the main shaft of process equipment 4, process according to the step in the processing method again.The procedure of processing that relates among the present invention is processed different parts according to the different cutters of replacing and is determined, during concrete enforcement, step 2 in the processing method～step 6 order can change, simultaneously, valve gap support at different structure, but the appropriate change procedure of processing just can be finished the processing of corresponding site, namely realizes by the angle of changing cutter or rotating back to rotating disk.Cutter is done rotation and radial feed moves and can realize by following delivering gear at facing head: see Figure 10, this delivering gear comprises servomotor 210, the output shaft 217 of described servomotor 210 is connected in transmission combination mechanism 220, transmission combination mechanism 220 is connected with power transmission shaft 218, power transmission shaft 218 passes the back and is connected with bevel gear 240 from main shaft 230 inside, bevel gear 240 meshes with the screw rod of ball-screw 250, and the nut of ball-screw 250 connects facing head slide plate, mounting cutter on the slide plate.
The anti-ream plane face flange hole rear end face 213 of scraping can be realized by the anti-ream gang tool of scraping in following examples: see Figure 11, this gang tool comprises cutter head 100, supplies the grip shank 200 of Digit Control Machine Tool handle of a knife chuck clamping, and grip shank 200 is connected with cutter head 100 by linkage section 300, knife bar 400 successively.Linkage section 300 and grip shank 200 coaxial settings, and the external diameter of linkage section 300 is less than the external diameter of grip shank 200, and the pivot 110 of cutter head 100 departs from the center 201 of grip shank 200.This gang tool in use, elder generation's axial orientation, cutter head 100 centers of cutter are moved to manufactured flange hole 211 centers, moving axially along cutter makes cutter head 100 comprise that indexable insert tip, throw away tip 500 all moves to manufactured flange hole 211 lower ends again, cutter rotation and be that the machine tool chief axis center moves to manufactured flange hole 211 centers with the center of grip shank 200 then, cutter are rotated and along the anti-flange hole 211 of scraping of cutter axial feed.
The valve gap support processing method that the present invention relates to, the process equipment that is used for the special fixture of processing valve gap support and comprises this special fixture are when the all-in-one-piece valve gap support of processing, anchor clamps are clamping work pieces firmly, makes workpiece that the movement of any direction not take place in process; Utilize clamping workpiece of rotary disk rotation positioning function just can finish the processing of valve gap support multi-section position, changing different cutters at positions different on the workpiece in process processes, and workpiece does not need to unload to refill, and avoids the machining accuracy of the reduction part that the multiple clamping workpiece brings in the prior art, part form and position tolerance not to reach problems such as requirement, unstable product quality.By control the anglec of rotation of rotary disk in the process equipment with end-toothed disc, guarantee the accuracy of each anglec of rotation, and then the axiality, the stem shaft that have guaranteed stem shaft system are and the perpendicularity of Flange Plane, and then improved valve gap support form and position tolerance machining accuracy.
Claims (10)
1. valve gap support processing method, described valve gap support comprises support (1) and valve gap (2), described support (1) is provided with the lubricated screw (13) of valve stem nut hole (11), eyelet bolt hole (12) and valve stem nut, described valve gap (2) is provided with flange (21), upper seal support (22) and stuffing-box (23), described flange (21) is provided with several flange holes (211), the process equipment (4) of processing valve gap support is provided with rotary disk (46), described rotary disk (46) is provided with special fixture (3), it is characterized in that: said method comprising the steps of:
1) the fixing described valve gap support of described special fixture (3) makes the center line (24) of valve gap support coaxial with the main shaft of process equipment (4);
2) described process equipment (4) cutting Flange Plane (212); Cut Flange Plane (212) afterwards, the angle of rotary disk (46) Rotate 180 °, cutting valve stem nut hole end surface (111);
3) cut valve stem nut hole end surface (111) after, change cutter, heavy boring valve stem nut hole (11); Behind the intact valve stem nut hole (11) of heavy boring, right boring valve stem nut hole (11); Behind the intact valve stem nut hole (11) of right boring, the angle of rotary disk (46) Rotate 180 °, heavy boring upper seal support (22); After heavy boring finishes upper seal support (22), right boring upper seal support (22); After right boring finishes upper seal support (22), heavy boring stuffing-box (23); After heavy boring finishes stuffing-box (23), right boring stuffing-box (23);
4) behind the intact stuffing-box (23) of right boring, change cutter, make cutter coaxial with the main shaft of process equipment (4), the angle of rotary disk (46) Rotate 180 °, finish-milling valve stem nut hole screw thread (112);
5) behind the intact valve stem nut hole screw thread (112) of finish-milling, change cutter, make cutter coaxial with the main shaft of process equipment (4), the angle of panoramic table (46) Rotate 180 °, brill flange hole (211); The angle of panoramic table (46) half-twist is bored eyelet bolt hole (12) and the lubricated screw (13) of valve stem nut on the support (1);
6) change cutter, the angle of panoramic table (46) half-twist, the anti-ream plane face flange hole rear end face (213) of scraping;
7) process flange hole rear end face (213) after, unload the bottom flange support.
2. valve gap support processing method according to claim 1 is characterized in that: described process equipment (4) all uses U axle processing Flange Plane (212), valve stem nut hole end surface (111), upper seal support (22), stuffing-box (23), valve stem nut hole (11) and flange hole rear end face (213).
3. valve gap support processing method according to claim 1 is characterized in that: three interpolations processing of described process equipment (4) use valve stem nut hole screw threads (112).
4. valve gap support processing method according to claim 1 is characterized in that: described valve gap support is the valve gap support blank of acceptance(check) on request, and described valve gap support blank is forging or foundry goods.
5. valve gap support processing method according to claim 1 is characterized in that: described valve gap support is used for the above gate valve of inside nominal diameter DN80, above above check-valves or the above Direct Travel control valve of DN25 of stop valve, DN50 of DN50.
6. a special fixture (3), be used for the standing valve lid support, it is characterized in that: described special fixture (3) comprises base plate (301), described base plate (301) is provided with back-up block (302), vertical rod (303) and adjusts screw rod (304), described vertical rod (303) is provided with briquetting (305), briquetting (305) end face is provided with nut (306), described nut (306) is threaded with vertical rod (303), described adjustment screw rod (304) is provided with nut V-block (307), and described nut V-block (307) is threaded with adjustment screw rod (304).
7. special fixture according to claim 6, it is characterized in that: also be fixed with V-block (308) on the described base plate (301), first guide pad (309) and second guide pad (310), described V-block (308) is located between first guide pad (309) and second guide pad (310), described back-up block (302) comprises first back-up block (3021), second back-up block (3022), described first back-up block (3021) is located on first guide pad (309), second back-up block (3022) is located on second guide pad (310), described first back-up block (3021), be provided with tie down screw (311) in second back-up block (3022), first back-up block (3021), second back-up block (3022) all moves axially along tie down screw (311), described first back-up block (3021) is provided with first inclined-plane (3023) that contacts with described valve gap support, second back-up block (3022) is provided with second inclined-plane (3024) that contacts with described valve gap support, nut V-block (307) is provided with the 3rd inclined-plane (3071) that contacts with described valve gap support, the 4th inclined-plane (3072), V-block (308) are provided with the 5th inclined-plane (3081) that contacts with described valve gap support, the 6th inclined-plane (3082).
8. special fixture according to claim 6, it is characterized in that: also comprise vertical rod seat (312), screw rod base (313) and pressing plate (314), described screw rod base (313) is connected with base plate (301) bolt, adjusts screw rod (304) and is located on the screw rod base (313); Base plate (301) is provided with groove (3011), described vertical rod seat (312) is located in the groove (3011), vertical rod (303) is located in the vertical rod seat (312), and described pressing plate (314) is located on the end face of base plate (301) and vertical rod seat (312) and pressing plate (314) is connected with vertical rod seat (312) bolt.
9. one kind comprises the process equipment (4) as each described special fixture (3) of claim 6-8, comprise lathe bed (41), it is characterized in that: described lathe bed (41) is provided with column (42), described column (42) connects main spindle box (43) and moves up and down driving mechanism, and the described driving mechanism that moves up and down makes main spindle box (43) move up and down along column (42); Described main spindle box (43) comprises main shaft, is located at the facing head of spindle nose, on the described facing head cutter is housed; Described lathe bed (41) is provided with slide unit (44) and move left and right driving mechanism, and described move left and right driving mechanism makes slide unit (44) along lathe bed (41) move left and right; Described slide unit (44) is provided with workbench (45) and moves forward and backward driving mechanism, and the described driving mechanism that moves forward and backward makes workbench (45) move forward and backward along slide unit (44); Described workbench (45) comprises end-toothed disc and the rotary disk of being located on the end-toothed disc end face (46); Described rotary disk (46) is connected with described special fixture (3).
10. process equipment according to claim 9, it is characterized in that: described rotary disk (46) is provided with locating slot (461), and described special fixture (3) is provided with positioning key (315), and described positioning key (315) cooperates with locating slot (461).
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| CN201210030463.3A CN103240567B (en) | 2012-02-10 | 2012-02-10 | Bonnet support processing method and clamp and processing equipment for bonnet support |
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| CN201210030463.3A CN103240567B (en) | 2012-02-10 | 2012-02-10 | Bonnet support processing method and clamp and processing equipment for bonnet support |
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| CN103240567B CN103240567B (en) | 2015-06-10 |
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| CN110722372A (en) * | 2019-10-19 | 2020-01-24 | 王光利 | Multifunctional BC shaft positioning fixture of numerically controlled milling machine |
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Effective date of registration: 20160726 Address after: Pudong New Area town 201300 Shanghai Huicheng Road No. 718 Building 2 Patentee after: Shanghai Honggong Machinery Technology Co.,Ltd. Address before: 201300, No. 718, Huicheng Road, Nanhui Industrial Park, Shanghai, Pudong New Area Patentee before: Shanghai Maud Group Co., Ltd. |