CN102407423B - Method for machining valve seat of respiratory flow and rhythm control air valve - Google Patents
Method for machining valve seat of respiratory flow and rhythm control air valve Download PDFInfo
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- CN102407423B CN102407423B CN2011102960581A CN201110296058A CN102407423B CN 102407423 B CN102407423 B CN 102407423B CN 2011102960581 A CN2011102960581 A CN 2011102960581A CN 201110296058 A CN201110296058 A CN 201110296058A CN 102407423 B CN102407423 B CN 102407423B
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Abstract
The invention relates to a method for machining a valve seat of a respiratory flow and rhythm control air valve. An inner cavity of the valve seat is formed by sequentially connecting an upper inner cylindrical surface, an inner end surface, a stepped surface, a middle inner cylindrical surface, an upper conical surface, a lower conical surface, a lower inner cylindrical surface, an inner tool retracting ring slot and a threaded surface. The method for machining the valve seat of the respiratory flow and rhythm control air valve comprises the following steps of: uniformly cutting an inner surface by a cyclic program command function of a numerical control machine tool; programming the stepped surface in a vehicle and the inner tool retracting ring slot by a forming cutter; machining an outer surface of the valve seat by automatic programming software of a numerical control machining center; machining thread on the valve seat by a special thread machining device; and finishing the machining of the valve seat by a valve seat material post-machining process. The invention has the advantages of reasonable design and rigorous conception; and due to manufacturing by a new technique, the manufacturing time is saved, the quality performance of products is improved, the stability, the reliability and the safety of operation are reinforced, and the delivery period of the products is shortened.
Description
Technical field
The present invention relates to the air-valve device technical field in medical ventilator, refer in particular to a kind of respiratory flow rhythm control air valve valve seat and processing method thereof.
Background technology
In common valve seat processing and manufacturing technology, because valve base cavity is relatively simple for structure, add man-hour at present, usually adopt plain clamp clamping valve seat, utilize universal cutter to carry out simple turning processing and just can reach instructions for use; Yet, need to move up and down break-make gas for spool for the inner chamber in the valve seat of applying in medical ventilator, therefore, the axiality of each face that the inner chamber in this valve seat coordinates with spool and fineness require very high.For the valve seat of this inner-cavity structure complexity, adopt existing valve seat processing technology to add man-hour, this existing processing technology procedure of processing is various, the bad control of precision, surface quality is poor, and burr is difficult to remove, and the valve seat coaxiality error processed is larger.In view of this, how to provide a kind of new valve seat processing method that can meet axiality and fineness requirement to become problem to be solved is arranged.
Summary of the invention
Purpose of the present invention is exactly a kind of respiratory flow rhythm control air valve valve seat processing method provided for the deficiencies in the prior art part.
For achieving the above object, a kind of respiratory flow rhythm control air valve valve seat processing method of the present invention, the inner chamber of this valve seat by upper inner cylinder face, inner face, step surface, in inner cylinder face, upper taper seat, lower taper seat, lower inner cylinder face, interior withdrawing annular groove and flank be connected in sequence, and the axial line of upper inner cylinder face, inner face, step surface, middle inner cylinder face, upper taper seat, lower taper seat is all on same central axis; This valve base cavity process is all processed on numerically controlled lathe, comprises the following steps successively:
1) turning of processing metal raw material is shaped to column type valve seat base, pulls down column type valve seat base, utilizes valve seat stock outer cylinder surface clamping on fixture, and the valve seat stock is steadily fixing;
2) adopt center bit to bore a upper surface centre bore in the center of the upper surface of the column type valve seat base of measuring, as the locating hole of processing later;
3) change a drill bit less than upper inner cylinder face diameter and carry out roughing, from the valve seat upper surface, get into position above step surface;
4) after slightly having bored inner cylinder face, change a drill bit that is less than middle inner cylinder face diameter and carry out roughing, drilling depth is drilled into middle inner cylinder face and above upper taper seat intersection;
5) slightly bore middle inner cylinder face, then changed a drill bit that is less than lower taper seat top diameter, be drilled into the lower face of cylinder and lower taper seat small end basal surface position;
6) change an inner face special molding cutter along the feed of Z direction to inner face fine finishining;
7) adopt inner circle boring cutter fine finishining step surface, chamfering, middle inner cylinder face, upper taper seat, lower taper seat, valve seat upper end inner cylinder face machines;
8) by column type valve seat base under fixture dismounting, column type valve seat base clamping is fixed in tune, the processing valve seat other end, the lower surface of finish turning column type valve seat base, measure the center of the lower surface of column type valve seat base, adopt center bit to bore end-face central hole in the center of the lower surface of the column type valve seat base of measuring;
9) changing a drill bit less than lower inner cylinder face diameter carries out slightly boring and being machined to the inner cylinder face top from the lower surface centre bore;
10) slightly bored lower inner cylinder face, then changed the drill bit that a diameter is less than flank and slightly bore flank to the inner groove bottom position;
11) utilize inner circle boring cutter double thread face and lower inner cylinder face fine finishining;
12) change an inner groove forming cutter inner groove is carried out to the disposable fine finishining that completes;
13) last double thread face carries out screw thread processing.
Also comprise the 14th last step: utilize CNC milling machine machining center machining column type valve seat base six faces in outside, the recycling automatic programming software is to the processing of programming of valve seat model, to the plane of characteristic threads is arranged, first process the screw thread datum hole, the recycling tapping machine carries out tapping to the screw thread on each plane of valve seat.
After adopting said structure, the processing method of valve seat of the present invention has overcome the bad control of existing valve seat machining accuracy, and surface quality is poor, and tooling step is various, the deficiencies such as burr; It is wider that processing method of the present invention becomes the lathe in machining scope, and machining accuracy is guaranteed, and has reduced procedure, product processing that can be high for Geometrical Tolerance Principle; In process, adopt multiple lathe reasonable coordination to use, greatly improved the serviceability of equipment, improved machining accuracy, shorten the process-cycle.After adopting valve seat processing method of the present invention, the axiality of the upper inner cylinder face in valve base cavity of the present invention, inner face, step surface, middle inner cylinder face, upper taper seat, lower taper seat is guaranteed, and the machining accuracy of each machined surface is guaranteed.
The accompanying drawing explanation
Fig. 1 is respiratory flow rhythm control air valve valve base cavity perspective view of the present invention.
Fig. 2 is respiratory flow rhythm control air valve valve base cavity planar structure schematic diagram of the present invention.
Fig. 3 is respiratory flow rhythm control air valve valve seat perspective view of the present invention.
Fig. 4 is assemblied in the schematic diagram of respiratory flow rhythm control air valve device for processing rear valve base.
The specific embodiment
As Figure 1-4, a kind of respiratory flow rhythm control air valve valve seat processing method of the present invention, it is characterized in that: the inner chamber of this valve seat by upper inner cylinder face 1, inner face 2, step surface 3, in inner cylinder face 4, upper taper seat 5, lower taper seat 6, lower inner cylinder face 7, interior withdrawing annular groove 8 and flank 9 be connected in sequence, and the axial line of upper inner cylinder face 1, inner face 2, step surface 3, middle inner cylinder face 4, upper taper seat 5, lower taper seat 6 is all on same central axis; This valve base cavity process is all processed on numerically controlled lathe, comprises the following steps successively:
1) turning of processing metal raw material is shaped to column type valve seat base, pulls down column type valve seat base, utilizes valve seat stock outer cylinder surface clamping on fixture, and the valve seat stock is steadily fixing;
2) adopt center bit to bore a upper surface centre bore in the center of the upper surface of the column type valve seat base of measuring, as the locating hole of processing later;
3) change one and carry out roughing, position above step surface 3 is got in the valve seat upper surface than the little drill bit of upper inner cylinder face 1 diameter;
4) after slightly having bored inner cylinder face 1, change a drill bit that is less than middle inner cylinder face 4 diameters and carry out roughing, drilling depth is drilled into middle inner cylinder face 4 and above upper taper seat 5 intersections;
5) slightly bore middle inner cylinder face 4, then changed a drill bit that is less than lower taper seat 6 top diameters, be drilled into the lower face of cylinder 7 and lower taper seat 6 small end basal surface positions;
6) change inner face 2 special molding cutter along the feed of Z direction to inner face 2 fine finishining;
7) adopt inner circle boring cutter fine finishining step surface 3, chamfering 41, middle inner cylinder face 4, upper taper seat 5, lower taper seat 6, valve seat upper end inner cylinder face machines;
8) by column type valve seat base under fixture dismounting, column type valve seat base clamping is fixed in tune, the processing valve seat other end, the lower surface of finish turning column type valve seat base, measure the center of the lower surface of column type valve seat base, adopt center bit to bore end-face central hole in the center of the lower surface of the column type valve seat base of measuring;
9) changing a drill bit less than lower inner cylinder face 7 diameters carries out slightly boring and being machined to the inner cylinder face top from the lower surface centre bore;
10) slightly bored lower inner cylinder face 7, then changed the drill bit that a diameter is less than flank 9 and slightly bore flank 9 to the inner groove bottom position;
11) utilize inner circle boring cutter double thread face 9 and lower inner cylinder face 7 fine finishining;
12) change inner groove 8 forming cutters inner groove 8 is carried out to the disposable fine finishining that completes;
13) last double thread face 9 carries out screw thread processing.
Also comprise the 14th last step: utilize CNC milling machine machining center machining column type valve seat base six faces in outside, the recycling automatic programming software is to the processing of programming of valve seat model, to the plane of characteristic threads is arranged, first process the screw thread datum hole, the recycling tapping machine carries out tapping to the screw thread on each plane of valve seat.
During respiratory flow rhythm control air valve valve seat assembling of the present invention, as shown in Figure 4, comprise taper seat 5, lower taper seat 6, assembling core assembly 11 above middle inner cylinder face 4, inner groove 8 and flank 9 be thimble assembly 17 fixedly, valve seat 10 upper surfaces are with together with valve gap 12 is screwed in, and on core assembly 11, connection rotating shaft 15, and rotary nut 13 and knob 14 are housed in rotating shaft 15, magnetic valve 16 is contained in valve seat 10 sides, and fixed form is that screw is fixed.During work, core assembly 11 slides up and down to realize that the break-make of gas of air valve and the size of tolerance control along upper taper seat 5, lower taper seat 6, middle inner cylinder face 4.Therefore, for the axiality of valve seat 10 inner chambers and fineness, require very highly just can reach designing requirement.
The processing method of valve seat of the present invention has overcome the bad control of existing valve seat machining accuracy, and surface quality is poor, and tooling step is various, the deficiencies such as burr; It is wider that processing method of the present invention becomes the lathe in machining scope, and machining accuracy is guaranteed, and has reduced procedure, product processing that can be high for Geometrical Tolerance Principle; In process, adopt multiple lathe reasonable coordination to use, greatly improved the serviceability of equipment, improved machining accuracy, shorten the process-cycle.After adopting valve seat processing method of the present invention, the axiality of the upper inner cylinder face in valve base cavity of the present invention, inner face, step surface, middle inner cylinder face, upper taper seat, lower taper seat is guaranteed, while adopting various forming-tools to process corresponding working face, can not have influence on other machined surface, machining accuracy is guaranteed, has reduced procedure.
The present invention, by numerically controlled lathe cyclic program command function, carries out even machining to inner surface; Adopt step surface and necking in forming-tool programming car; Utilize the numerical control machining center automatic programming software to be processed the valve seat outside; Adopt the screw thread on special screw thread process equipment processing valve seat; Complete the processing of valve seat by the seat material aftertreatment technology.The present invention is reasonable in design, conceives rigorously, adopts forming cutter and Numeric Control Technology to be made, and has saved manufacturing time, has improved the product quality performance, and the stability of operation, reliability, security are strengthened, and have shortened product and have handed over the phase.
Claims (2)
1. a respiratory flow rhythm control air valve valve seat processing method, it is characterized in that: the inner chamber of this valve seat by upper inner cylinder face (1), inner face (2), step surface (3), in inner cylinder face (4), upper taper seat (5), lower taper seat (6), lower inner cylinder face (7), interior withdrawing annular groove (8) and flank (9) be connected in sequence, and the axial line of upper inner cylinder face (1), inner face (2), step surface (3), middle inner cylinder face (4), upper taper seat (5), lower taper seat (6) is all on same central axis; This valve base cavity process is all processed on numerically controlled lathe, comprises the following steps successively:
1) turning of processing metal raw material is shaped to column type valve seat base, pulls down column type valve seat base, utilizes valve seat stock outer cylinder surface clamping on fixture, and the valve seat stock is steadily fixing;
2) adopt center bit to bore a upper surface centre bore in the center of the upper surface of the column type valve seat base of measuring, as the locating hole of processing later;
3) change one and carry out roughing, position above step surface (3) is got in the valve seat upper surface than the little drill bit of upper inner cylinder face (1) diameter;
4) after slightly having bored inner cylinder face (1), change a drill bit that is less than middle inner cylinder face (4) diameter and carry out roughing, drilling depth is drilled into middle inner cylinder face (4) and upper taper seat (5) above intersection;
5) slightly bore middle inner cylinder face (4), then changed a drill bit that is less than lower taper seat (6) top diameter, be drilled into the lower face of cylinder (7) and lower taper seat (6) small end basal surface position;
6) change an inner face (2) special molding cutter along the feed of Z direction to inner face (2) fine finishining;
7) adopt inner circle boring cutter fine finishining step surface (3), chamfering (41), middle inner cylinder face (4), upper taper seat (5), lower taper seat (6), valve seat upper end inner cylinder face machines;
8) by column type valve seat base under fixture dismounting, column type valve seat base clamping is fixed in tune, the processing valve seat other end, the lower surface of finish turning column type valve seat base, measure the center of the lower surface of column type valve seat base, adopt center bit to bore end-face central hole in the center of the lower surface of the column type valve seat base of measuring;
9) changing a drill bit less than lower inner cylinder face (7) diameter carries out slightly boring and being machined to the inner cylinder face top from the lower surface centre bore;
10) slightly bored lower inner cylinder face (7), then changed the drill bit that a diameter is less than flank (9) and slightly bore flank (9) to the inner groove bottom position;
11) utilize inner circle boring cutter double thread face (9) and lower inner cylinder face (7) fine finishining;
12) change an inner groove (8) forming cutter inner groove (8) is carried out to the disposable fine finishining that completes;
13) last double thread face (9) carries out screw thread processing.
2. a kind of respiratory flow rhythm control air valve valve seat processing method according to claim 1, it is characterized in that: also comprise the 14th last step: utilize CNC milling machine machining center machining column type valve seat base six faces in outside, the recycling automatic programming software is to the processing of programming of valve seat model, to the plane of characteristic threads is arranged, first process the screw thread datum hole, the recycling tapping machine carries out tapping to the screw thread on each plane of valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102960581A CN102407423B (en) | 2011-09-28 | 2011-09-28 | Method for machining valve seat of respiratory flow and rhythm control air valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102960581A CN102407423B (en) | 2011-09-28 | 2011-09-28 | Method for machining valve seat of respiratory flow and rhythm control air valve |
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| CN102407423A CN102407423A (en) | 2012-04-11 |
| CN102407423B true CN102407423B (en) | 2013-12-04 |
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| CN2011102960581A Expired - Fee Related CN102407423B (en) | 2011-09-28 | 2011-09-28 | Method for machining valve seat of respiratory flow and rhythm control air valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016049604A1 (en) * | 2014-09-26 | 2016-03-31 | TB Healthcare Co., Ltd. | Method and apparatus for dispersion of microbes in a liquid suspension |
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| CN102848133A (en) * | 2012-08-29 | 2013-01-02 | 苏州市意可机电有限公司 | Circular arc tube processing technology |
| CN105822779A (en) * | 2016-03-24 | 2016-08-03 | 江苏星河阀门有限公司 | Multi-conical-face valve seat structure of high-temperature and high-pressure stop valve body |
| CN105729069A (en) * | 2016-03-25 | 2016-07-06 | 江苏星河阀门有限公司 | Machining method of multi-conical surface valve base structure of high-temperature and high-pressure check valve body |
| CN108581366B (en) * | 2018-08-08 | 2019-10-01 | 玉环诺仕橡胶制品有限公司 | A kind of processing technology of miniature valve seat |
| CN110216431A (en) * | 2019-06-25 | 2019-09-10 | 哈尔滨汽轮机厂有限责任公司 | A kind of processing method of 1000MW Steam Turbine jiggering gear hole |
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| CN1152488A (en) * | 1995-12-22 | 1997-06-25 | 德州机床厂 | Machining method for deep taper hole |
| DE10346075A1 (en) * | 2003-10-04 | 2005-04-21 | Bosch Gmbh Robert | Method of machining a guide section of inner bore in a nozzle body of fuel injection valve, involves making an inner bore by drilling or turning, with grinding pin being fed into a section of inner bore |
| CN101024266A (en) * | 2006-10-18 | 2007-08-29 | 吉瑞龙(福建)工程机械有限公司 | Hydraulic through-hole processing method and apparatus |
| CN101607366A (en) * | 2009-07-03 | 2009-12-23 | 宁波远达船机配件有限公司 | The processing method of fuel valve hole of marine diesel engine cylinder cover |
| CN102069380A (en) * | 2010-12-28 | 2011-05-25 | 通裕重工股份有限公司 | Small-diameter step deep hole processing technology of shaft part and technological device |
-
2011
- 2011-09-28 CN CN2011102960581A patent/CN102407423B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152488A (en) * | 1995-12-22 | 1997-06-25 | 德州机床厂 | Machining method for deep taper hole |
| DE10346075A1 (en) * | 2003-10-04 | 2005-04-21 | Bosch Gmbh Robert | Method of machining a guide section of inner bore in a nozzle body of fuel injection valve, involves making an inner bore by drilling or turning, with grinding pin being fed into a section of inner bore |
| CN101024266A (en) * | 2006-10-18 | 2007-08-29 | 吉瑞龙(福建)工程机械有限公司 | Hydraulic through-hole processing method and apparatus |
| CN101607366A (en) * | 2009-07-03 | 2009-12-23 | 宁波远达船机配件有限公司 | The processing method of fuel valve hole of marine diesel engine cylinder cover |
| CN102069380A (en) * | 2010-12-28 | 2011-05-25 | 通裕重工股份有限公司 | Small-diameter step deep hole processing technology of shaft part and technological device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016049604A1 (en) * | 2014-09-26 | 2016-03-31 | TB Healthcare Co., Ltd. | Method and apparatus for dispersion of microbes in a liquid suspension |
| US10316346B2 (en) | 2014-09-26 | 2019-06-11 | TB Healthcare Co., Ltd. | Method and apparatus for dispersion of microbes in a liquid suspension |
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| CN102407423A (en) | 2012-04-11 |
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