CN102357693B - Method for machining high-precision deep hole - Google Patents
Method for machining high-precision deep hole Download PDFInfo
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- CN102357693B CN102357693B CN 201110268501 CN201110268501A CN102357693B CN 102357693 B CN102357693 B CN 102357693B CN 201110268501 CN201110268501 CN 201110268501 CN 201110268501 A CN201110268501 A CN 201110268501A CN 102357693 B CN102357693 B CN 102357693B
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- deep hole
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- endoporus
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Abstract
The invention discloses a method for machining a high-precision deep hole, and particularly relates to a deep hole with the length to diameter ratio being more than 10. Based on the traditional deep hole machining method, the method utilizes the characteristics and advantages of the low-speed wire-cutting for machining a workpiece and adds the low-speed wire-cutting in the finishing machining process of the deep hole, so that the aim of straightening the straightness of an inner hole is achieved, an excellent basis hole for the following honing is provided, and the straightness of the deep hole can be equal to or less than 0.002 mm, and the roughness Ra of the deep hole is 0.4 microns through finish honing and grinding. Compared with the traditional machining method, the method for machining the deep hole disclosed by the invention has the advantages of high efficiency, stable quality and passing rate over 98%.
Description
Technical field
The present invention relates to a kind of deep hole processing method, especially draw ratio is greater than 10 deep hole processing method.
Background technology
Deep-Hole Drilling Technology, the supporting subsequent fine process technology of gun drilling especially are the bottlenecks of China's manufacturing industry development always.The draw ratio of multiple valve bush part endoporus has reached more than 10 times in the aeronautical product, linearity requirement≤0.002mm, Ra0.4.Usually in the machining process route after the valve bush part heat treatment, the processing of endoporus is undertaken by four procedures, and a honing is ground for three times.Honing is to revise the defective that produces in the operation of front with the effect of grinding step, manual to a power F radially during honing, shown in Figure of description 1, make its many places crowning become large, then eliminate crowning again, thereby make its linearity bring up to 0.002mm through repeatedly several checks of taking turns and honing, this processing method efficient is low, quality is unstable, and qualification rate is low.
Summary of the invention
The deficiency low for above-mentioned worker's method efficient, that quality is unstable, qualification rate is low the invention provides a kind of slow wire feeding wire-electrode cutting and processing method that utilizes.Purpose of the present invention: for the prior art difficult point, provide a kind of fine-processing technique method of High-precision Deep Hole, the linearity of deep hole is reached≤0.002mm, Ra0.4, and efficient is high, steady quality.
The technical scheme that the present invention takes is: a kind of method for machining high-precision deep hole may further comprise the steps:
Step 1: drill gun roughing endoporus;
Step 2: thick top gem of a girdle-pendant endoporus; Revise various errors and blemish except axis deviation, and good machining benchmark is provided for the silk thread cutting of being careful, stay allowance 0.15 ~ 0.3mm.
Step 3: the silk thread of being careful cutting semifinishing endoporus;
1) utilizes on the slow feeding linear cutting bed hole that cooperates with workpiece (4) cylindrical in mold (1) processing;
2) workpiece (4) is put into the hole of mold (1), and fixing with holding out against screw (2);
3) utilize the silk thread cutting processing of being careful to come the alignment bent hole, for follow-up honing provides good basic hole, stay allowance 0.03～0.05mm; Concrete steps are as follows:
Utilize the centering function of slow wire feeding lathe, determine the center of workpiece (4) bottom outlet, setup parameter carries out semifinishing, stays allowance 0.03～0.05mm, and parameter is as follows:
Wire electrode:
Brass wire
Wire travelling speed: 10m/min
Thread tension: 2N
Water spray pressure: 0
Pulse width: 6 μ s
Pulse spacing: 0.1 μ s
The average reference voltage of servo-drive system: 34.5V
Step 4: smart top gem of a girdle-pendant endoporus; Honing guarantees the roughness grade number of requirement.
Step 5: grind; Grind and obtain good surface quality, guarantee that part has accurate physical dimension.
Further, in order better to implement the present invention, the above-mentioned screw (2) that holds out against is for copper.
Further, in order better to implement the present invention, the above-mentioned contact surface that holds out against screw (2) and workpiece (4) is circular shape.
Advantage of the present invention and beneficial effect: the silk thread cutting processing of being careful technology is as a kind of special processing technology, has very strong practical value, play an important role at numerous field of industrial productions, its process means in many cases conventional manufacturing technology can't replace.The intrinsic processing characteristics of silk thread cutting owing to be careful: be not subjected to the workpiece material physical property, as the impact of hardening, and itself seldom produces cutting stress, the control of instrument and workpiece relative motion is fairly simple, the clamping of workpiece is relatively simple, has saved cost, has improved efficient.The present invention adopts the silk thread cutting processing of being careful to come " alignment " bent hole in the fine finishining of High-precision Deep Hole, for follow-up honing provides good basic hole, makes the working (machining) efficiency of High-precision Deep Hole improve steady quality.
Description of drawings
Fig. 1 is High-precision Deep Hole traditional diamond-making technique schematic diagram;
Fig. 2 is the machining accuracy deep hole flow chart;
Fig. 3 is the clamping schematic diagram of workpiece when being careful the silk thread cutting processing, 1: mold, 2: hold out against screw, 3: wire electrode, 4: workpiece;
Fig. 4 holds out against the screw schematic diagram;
Fig. 5 is the variation contrast schematic diagram of axis before and after the silk thread cutting processing of being careful.
The specific embodiment
Below in conjunction with the explanation accompanying drawing the present invention is elaborated.
Take an external diameter as
The workpiece of height L:200mm is example, requires the processing internal diameter to arrive
Linearity≤0.002mm, roughness 0.4 μ m sets forth the specific embodiment of this patent.
Step 1: drill gun roughing endoporus;
Internal diameter by roughing such as drill gun, heat treatments after size to
Step 2: thick top gem of a girdle-pendant endoporus; Revise various errors and blemish except axis deviation, and good machining benchmark is provided for the silk thread cutting of being careful, stay allowance 0.15～0.3mm, internal diameter is worked into
Step 3: the silk thread of being careful cutting semifinishing endoporus;
1) utilizes on the slow feeding linear cutting bed in mold 1 processing and workpiece 4 cylindricals
The hole that cooperates, fit clearance is 0.04mm;
2) workpiece 4 is put into mold 1, and hand-tight make-up two M5 with annular knurl to hold out against screw 2 fixing, as shown in Figure 3;
Hold out against cut for the surface that holds out against 2 pairs of workpiece 4 of screw is not produced, present embodiment is taked holds out against screw 2 for copper, and further, the contact surface that holds out against screw 2 and workpiece 4 is designed to circular-arc, as shown in Figure 4;
3) utilize the centering function of slow wire feeding lathe, determine the center of workpiece 4 bottom outlets, this center is the working origin of workpiece 4, and setting parameter is as follows:
Lathe: Switzerland Archie Xia Mier ROBFIL 440CC
Wire electrode:
Brass wire
Wire travelling speed: 10m/min
Thread tension: 2N
Water spray pressure: 0
Pulse width: 6 μ s
Pulse spacing: 0.1 μ s
The average reference voltage of servo-drive system: 34.5V
The employing silk thread cutting processing of being careful is come the alignment bent hole, for follow-up honing provides good basic hole, stays allowance 0.03～0.05mm, and internal diameter size is worked into
Step 4: smart top gem of a girdle-pendant endoporus; The honing internal diameter size
And the roughness grade number of assurance requirement;
Step 5: grind; Grind and obtain good surface quality, guarantee that part has accurate physical dimension.
Fig. 5 is the variation contrast schematic diagram of axis before and after the silk thread cutting processing of being careful.
Beneficial effect: the present invention adopts the silk thread cutting processing of being careful to come the alignment bent hole in the processing of High-precision Deep Hole, for follow-up honing provides good basic hole, makes the working (machining) efficiency of High-precision Deep Hole improve steady quality.
Claims (3)
1. method for machining high-precision deep hole may further comprise the steps:
Step 1: drill gun roughing endoporus;
Step 2: thick top gem of a girdle-pendant endoporus; Revise various errors and blemish except axis deviation, and good machining benchmark is provided for the silk thread cutting of being careful, stay allowance 0.15 ~ 0.3mm;
Step 3: the silk thread of being careful cutting semifinishing endoporus;
1) utilizes on the slow feeding linear cutting bed hole that cooperates with workpiece (4) cylindrical in mold (1) processing;
2) workpiece (4) is put into the hole of mold (1), and fixing with holding out against screw (2);
3) utilize the silk thread cutting processing of being careful to come the alignment bent hole, for follow-up honing provides good basic hole, stay allowance 0.03～0.05mm; Concrete steps are as follows:
Utilize the centering function of slow wire feeding lathe, determine the center of workpiece (4) bottom outlet, setup parameter carries out semifinishing, stays allowance 0.03～0.05mm, and parameter is as follows:
Wire electrode:
Brass wire
Wire travelling speed: 10m/min
Thread tension: 2N
Water spray pressure: 0
Pulse width: 6 μ s
Pulse spacing: 0.1 μ s
The average reference voltage of servo-drive system: 34.5V
Step 4: smart top gem of a girdle-pendant endoporus; Honing guarantees the roughness grade number of requirement;
Step 5: grind; Grind and obtain good surface quality, guarantee that part has accurate physical dimension.
2. method for machining high-precision deep hole according to claim 1 is characterized in that: hold out against screw (2) for copper.
3. method for machining high-precision deep hole according to claim 2 is characterized in that: the contact surface that holds out against screw (2) and workpiece (4) is circular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110268501 CN102357693B (en) | 2011-09-08 | 2011-09-08 | Method for machining high-precision deep hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110268501 CN102357693B (en) | 2011-09-08 | 2011-09-08 | Method for machining high-precision deep hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102357693A CN102357693A (en) | 2012-02-22 |
| CN102357693B true CN102357693B (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110268501 Expired - Fee Related CN102357693B (en) | 2011-09-08 | 2011-09-08 | Method for machining high-precision deep hole |
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Families Citing this family (13)
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| CN102794622B (en) * | 2012-09-11 | 2014-12-24 | 广州泰胜数控机械有限公司 | Machining method of precise inner gear |
| CN104526532A (en) * | 2013-12-27 | 2015-04-22 | 邵阳维克液压股份有限公司 | Method for machining concentric holes of variable shell of axial plunger pump and clamp |
| CN103817588B (en) * | 2014-03-14 | 2016-08-17 | 邓湘凌 | Pore finishing method |
| CN105643032B (en) * | 2014-11-14 | 2018-04-10 | 中国航空工业第六一八研究所 | A kind of processing method of the high-precision small square hole of revolving parts radial direction |
| CN105643206A (en) * | 2015-12-11 | 2016-06-08 | 长春航空液压控制有限公司 | Processing method for inner hole of ultra-precise valve sleeve |
| CN105750843B (en) * | 2016-04-29 | 2017-12-26 | 中国原子能科学研究院 | A kind of method for machining bore of molybdenum alloy thin-wall long pipe |
| CN108246829A (en) * | 2017-12-26 | 2018-07-06 | 张家港华裕有色金属材料有限公司 | A kind of manufacturing method of TA18 titanium alloys seamless tube blank |
| CN110893579B (en) * | 2019-10-22 | 2021-05-28 | 南京航空航天大学 | Honing surface roughness prediction method considering oilstone yielding |
| CN112571096B (en) * | 2020-12-22 | 2022-01-14 | 苏州萨伯工业设计有限公司 | Method for adjusting installation precision of lathe tool rest |
| CN112658696B (en) * | 2021-01-06 | 2023-07-07 | 宁波舜邦模具科技有限公司 | Micron-sized guide pillar hole machining device and machining method |
| CN113829012B (en) * | 2021-09-29 | 2022-12-06 | 成都光明光电有限责任公司 | Glass discharge tube and method for producing the same |
| CN114054874B (en) * | 2021-11-19 | 2022-08-16 | 厦门虹鹭钨钼工业有限公司 | High-precision 3D printing two-dimensional collimator positioning and processing method |
| CN117139759B (en) * | 2023-10-31 | 2024-01-23 | 赫比(成都)精密塑胶制品有限公司 | Machining method of multi-section special-shaped conical hole and workpiece |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62120921A (en) * | 1985-11-20 | 1987-06-02 | Mitsubishi Metal Corp | Continuously boring machine for superfine deep hole |
| CN100404195C (en) * | 2004-02-20 | 2008-07-23 | 上海大量电子设备有限公司 | Combined machine-tool possessing fast wire-moving cutting and deep small hole processing functions |
| CN201659466U (en) * | 2009-11-27 | 2010-12-01 | 中国直升机设计研究所 | Deep-hole grinding device |
| CN201913271U (en) * | 2010-12-16 | 2011-08-03 | 东莞市垠星科技发展有限公司 | High-precision deep hole processor |
| CN201940784U (en) * | 2010-12-21 | 2011-08-24 | 苏州工业职业技术学院 | Machining device of large length-diameter ratio nonferrous metal step deep hole |
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