CN106112412A - The deep blind hole processing technique of spool high accuracy - Google Patents
The deep blind hole processing technique of spool high accuracy Download PDFInfo
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- CN106112412A CN106112412A CN201610690562.2A CN201610690562A CN106112412A CN 106112412 A CN106112412 A CN 106112412A CN 201610690562 A CN201610690562 A CN 201610690562A CN 106112412 A CN106112412 A CN 106112412A
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- Prior art keywords
- hole
- reaming
- high accuracy
- processing technique
- spool
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Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
A kind of spool deep blind hole processing technique of high accuracy that the present invention relates to, it is characterised in that it comprises the following steps: step one, slightly bore reaming;Step 2, slightly ream;Step 3, finish ream hole;Step 4, a reaming;Step 5, rough honing hole;Step 6, microhoning hole;Step 7, second reaming.The deep blind hole processing technique of spool of the present invention high accuracy has and is suitable for high-volume volume production, constant product quality, the advantage that there is not relief groove structure.
Description
Technical field
The present invention relates to a kind of deep blind hole processing technique of spool high accuracy.
Background technology
Spool is that the valve body movement by it is to realize the valve of the basic function of direction controlling, Stress control or flow-control
Part, common valve cored structure is relatively easy, and manufacturing process is the most convenient, but precision is high, structure complicated, the manufacture of the many spools of function
Technique all has its uniqueness, as having the spool of High-precision Deep Hole, and the wherein valve of the deep blind hole (draw ratio > 10:1) of high accuracy
Core (such as Fig. 1) manufactures more complicated, and how can realize volume production while ensureing procedure quality becomes a processing difficult problem.
The spool design requirement with the deep blind hole of high accuracy is: the hole of φ 6.363mm is more than or equal to 94.5mm in the degree of depth
In the range of, meet roughness Ra 0.6 μm, circularity 0.0025mm, linearity 0.0025mm, size φ 6.363+0.005/0
(mm), bottom permission aperture φ 6.322-φ 6.368(mm).Diameter in following full text, linearity, circularity unit are mm,
Roughness unit is μm.
Conventional processing methods is to increase a relief groove structure (such as Fig. 2) at feature bottom, it is desirable to the diameter of escape is wanted
More than the limit superior of aperture φ 6.363+0.005/0, i.e. φ 6.368, but design requires that base diameter cannot be greater than φ
6.368, say, that can not there is relief groove structure, it is inapplicable that this results in existing technique.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that one is suitable for high-volume volume production, constant product quality, does not deposits
The deep blind hole processing technique of spool high accuracy at relief groove structure.
The object of the present invention is achieved like this:
A kind of deep blind hole processing technique of spool high accuracy, it is characterised in that it comprises the following steps:
Step one, slightly bore reaming
Step 2, slightly ream
Step 3, finish ream hole
Step 4, a reaming
Step 5, rough honing hole
Step 6, microhoning hole
Step 7, second reaming.
Specifically comprising the following steps that of a kind of spool deep blind hole processing technique of high accuracy
Step one, slightly bore reaming
Step 2, slightly ream
Being controlled 0.01 at φ 6.2 ± 0.015, circularity, linearity by dimension control, roughness controls at Ra3.2;
Step 3, finish ream hole
Being controlled 0.005 at φ 6.32+0.008/-0.005, circularity, linearity by dimension control, Rough control exists
Ra1.6;
Step 4, a reaming
Machined bottom size is to φ 6.32 0/-0.02;
Step 5, rough honing hole
Being controlled 0.003 at φ 6.36 0/-0.005, circularity, linearity by dimension control, Rough control is at Ra0.8;
Step 6, microhoning hole
Microhoning hole reaches the design requirement of final hole in piece part, and dimensional accuracy is φ 6.363+0.005/0, circularity, linearity control
System is 0.0025, and Rough control is at Ra0.6;
Step 7, second reaming
Second reaming, processes bottom part aperture diameter, meets the dimensional requirement of size φ 6.322-φ 6.368.
Compared with prior art, the invention has the beneficial effects as follows:
The deep blind hole processing technique reliability of spool of the present invention high accuracy is high, disclosure satisfy that Element Design is wanted after batch checking
Asking, operation is simple, fixing, easy to process, quick, the most effectively improves working (machining) efficiency, reduce while ensureing quality
Production cost.The deep blind hole processing technique of spool the most of the present invention high accuracy has and is suitable for high-volume volume production, constant product quality, no
The advantage that there is relief groove structure.
Accompanying drawing explanation
Fig. 1 designs the structural representation of requirement for the present invention.
Fig. 2 is the structural representation of the product with escape.
Fig. 3 is the schematic diagram of the spool that step one of the present invention processes.
Fig. 4 is the schematic diagram of the spool that step 2 of the present invention processes.
Fig. 5 is the schematic diagram of the spool that step 3 of the present invention processes.
Fig. 6 is the schematic diagram of the spool that step 4 of the present invention processes.
Fig. 7 is the schematic diagram of the spool that step 5 of the present invention processes.
Fig. 8 is the schematic diagram of the spool that step 6 of the present invention processes.
Fig. 9 is the schematic diagram of the spool that step 7 of the present invention processes.
Detailed description of the invention
See Fig. 3 ~ Fig. 9, the deep blind hole processing technique of a kind of spool that the present invention relates to high accuracy, it comprises the following steps:
Step one, slightly bore reaming (Fig. 3)
The thick purpose boring reaming is to remove major part allowance;
Step 2, thick fraising (Fig. 4)
Thick fraising purpose is the shape correcting hole, is controlled at φ 6.2 ± 0.015, circularity, linearity by dimension control
0.01, roughness controls at Ra3.2, the size of stable hole, less because slightly boring size scattered error produced by reaming;
Step 3, finish ream hole (Fig. 5)
Finish reaming hole purpose is further stable dimensions, improves roughness, reduces size scattered error, reduces following process surplus, by chi
Very little precision controlling controls 0.005 at φ 6.32+0.008/-0.005, circularity, linearity, and Rough control is at Ra1.6;
Step 4, a reaming (Fig. 6)
Reaming purpose be machined bottom size to φ 6.32 0/-0.02, prepare for the honing of rear road;
Step 5, rough honing hole (Fig. 7)
Rough honing hole purpose is to reduce final honing surplus, it is provided that parts size precision and surface quality, reaches final honing
Craft precision requirement;By dimension control at φ 6.36 0/-0.005, circularity, linearity control 0.003, Rough control
At Ra0.8;
Step 6, microhoning hole (Fig. 8)
Microhoning hole reaches the design requirement of final hole in piece part, and dimensional accuracy is φ 6.363+0.005/0, circularity, linearity control
System is 0.0025, and Rough control is at Ra0.6;
Step 7, second reaming (Fig. 9)
Second reaming, processes bottom part aperture diameter, meets the dimensional requirement of size φ 6.322-φ 6.368.
Claims (2)
1. the deep blind hole processing technique of spool high accuracy, it is characterised in that it comprises the following steps:
Step one, slightly bore reaming
Step 2, slightly ream
Step 3, finish ream hole
Step 4, a reaming
Step 5, rough honing hole
Step 6, microhoning hole
Step 7, second reaming.
A kind of deep blind hole processing technique of spool high accuracy the most according to claim 1, it is characterised in that its concrete steps
As follows:
Step one, slightly bore reaming
Step 2, slightly ream
Being controlled 0.01 at φ 6.2 ± 0.015, circularity, linearity by dimension control, roughness controls at Ra3.2;
Step 3, finish ream hole
Being controlled 0.005 at φ 6.32+0.008/-0.005, circularity, linearity by dimension control, Rough control exists
Ra1.6;
Step 4, a reaming
Machined bottom size is to φ 6.32 0/-0.02;
Step 5, rough honing hole
Being controlled 0.003 at φ 6.36 0/-0.005, circularity, linearity by dimension control, Rough control is at Ra0.8;
Step 6, microhoning hole
Microhoning hole reaches the design requirement of final hole in piece part, and dimensional accuracy is φ 6.363+0.005/0, circularity, linearity control
System is 0.0025, and Rough control is at Ra0.6;
Step 7, second reaming
Second reaming, processes bottom part aperture diameter, meets the dimensional requirement of size φ 6.322-φ 6.368.
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CN201610690562.2A CN106112412A (en) | 2016-08-20 | 2016-08-20 | The deep blind hole processing technique of spool high accuracy |
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CN201610690562.2A CN106112412A (en) | 2016-08-20 | 2016-08-20 | The deep blind hole processing technique of spool high accuracy |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106826138A (en) * | 2017-04-18 | 2017-06-13 | 上海第机床厂有限公司 | Presurized water reactor CRDM blind hole rod stroke housing and processing method |
CN109590694A (en) * | 2019-01-25 | 2019-04-09 | 江苏迈信林航空科技股份有限公司 | The processing method of deep blind hole |
CN109590677A (en) * | 2018-11-09 | 2019-04-09 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of processing method of profound cylinder sealing inner hole |
CN112247496A (en) * | 2020-11-16 | 2021-01-22 | 常州艾肯智造科技有限公司 | High-precision machining method for valve core of floating ball type drain valve |
CN114042950A (en) * | 2021-11-17 | 2022-02-15 | 河南中原特钢装备制造有限公司 | Processing method for processing conical flat-bottom ultra-deep blind hole and forming cutter |
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JPH0835390A (en) * | 1994-07-25 | 1996-02-06 | Japan Found Eng Co Ltd | Drilling device |
CN102310316A (en) * | 2011-08-10 | 2012-01-11 | 龙工(上海)桥箱有限公司 | Method for completing high-precision machining of valve body hole series on machine tool of machining center. |
CN203031046U (en) * | 2012-12-29 | 2013-07-03 | 无锡必克液压股份有限公司 | Diamond reamer for honing valve core holes |
CN105345406A (en) * | 2015-11-28 | 2016-02-24 | 贵州凯星液力传动机械有限公司 | Efficient machining method of precise valve hole |
CN105619024A (en) * | 2015-03-12 | 2016-06-01 | 重庆华驰文具有限公司 | Manufacturing method for stainless steel valve element |
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2016
- 2016-08-20 CN CN201610690562.2A patent/CN106112412A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0835390A (en) * | 1994-07-25 | 1996-02-06 | Japan Found Eng Co Ltd | Drilling device |
CN102310316A (en) * | 2011-08-10 | 2012-01-11 | 龙工(上海)桥箱有限公司 | Method for completing high-precision machining of valve body hole series on machine tool of machining center. |
CN203031046U (en) * | 2012-12-29 | 2013-07-03 | 无锡必克液压股份有限公司 | Diamond reamer for honing valve core holes |
CN105619024A (en) * | 2015-03-12 | 2016-06-01 | 重庆华驰文具有限公司 | Manufacturing method for stainless steel valve element |
CN105345406A (en) * | 2015-11-28 | 2016-02-24 | 贵州凯星液力传动机械有限公司 | Efficient machining method of precise valve hole |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106826138A (en) * | 2017-04-18 | 2017-06-13 | 上海第机床厂有限公司 | Presurized water reactor CRDM blind hole rod stroke housing and processing method |
CN109590677A (en) * | 2018-11-09 | 2019-04-09 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of processing method of profound cylinder sealing inner hole |
CN109590677B (en) * | 2018-11-09 | 2020-12-29 | 中国航空工业集团公司西安飞行自动控制研究所 | Method for machining deep and long cylindrical surface sealing inner hole |
CN109590694A (en) * | 2019-01-25 | 2019-04-09 | 江苏迈信林航空科技股份有限公司 | The processing method of deep blind hole |
CN112247496A (en) * | 2020-11-16 | 2021-01-22 | 常州艾肯智造科技有限公司 | High-precision machining method for valve core of floating ball type drain valve |
CN114042950A (en) * | 2021-11-17 | 2022-02-15 | 河南中原特钢装备制造有限公司 | Processing method for processing conical flat-bottom ultra-deep blind hole and forming cutter |
CN114042950B (en) * | 2021-11-17 | 2024-05-03 | 河南中原特钢装备制造有限公司 | Machining method for machining conical flat bottom ultra-deep blind hole and forming cutter |
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