CN104001958A - Machining method for deep hole reducing inner cavity - Google Patents

Machining method for deep hole reducing inner cavity Download PDF

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Publication number
CN104001958A
CN104001958A CN201410200799.9A CN201410200799A CN104001958A CN 104001958 A CN104001958 A CN 104001958A CN 201410200799 A CN201410200799 A CN 201410200799A CN 104001958 A CN104001958 A CN 104001958A
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CN
China
Prior art keywords
processing
boring
clamping
machine tool
control machine
Prior art date
Application number
CN201410200799.9A
Other languages
Chinese (zh)
Inventor
吴瑞彪
孙旭东
黄鹏跃
张德远
陈华伟
隋翯
Original Assignee
哈尔滨东安发动机(集团)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 哈尔滨东安发动机(集团)有限公司 filed Critical 哈尔滨东安发动机(集团)有限公司
Priority to CN201410200799.9A priority Critical patent/CN104001958A/en
Publication of CN104001958A publication Critical patent/CN104001958A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B37/00Boring by making use of ultrasonic energy

Abstract

The invention relates to a machining method for a deep hole reducing inner cavity. Variable cross-section machining is carried out by the adoption of small amplitude, small cutting-in and ultrasonic frequency vibration through turning and clamping, the surface roughness of a workpiece is reduced, and the dimensional accuracy of the workpiece is improved. According to the machining method, the step of repeated cutter feeding and retreating processing for machining the complex deep hole reducing inner cavity part is changed, the machining time is effectively shortened, and the machining quality of the complex deep hole reducing inner cavity part is improved.

Description

A kind of processing method of deep hole reducing inner chamber
Technical field
The present invention relates to a kind of processing method, especially a kind of processing method of deep hole reducing inner chamber.
Background technology
In mechanical manufacturing field, due to complicated deep hole reducing inner chamber, (draw ratio is greater than 20, diameter variation exceedes 10%, length of transition zone be less than total length 10%) pattern complexity, a little less than processing rigidity, add and affected obviously by clamping power, cutting force, heat in metal cutting, machine vibration etc., in process, be prone to the phenomenons such as cutter relieving is excessive, flutter, so be one of difficult problem in processing always.For example certain aero-engine central transmission bar, its length is 778mm, and inner large footpath is Φ 19mm, and path is Φ 14mm, and transition zone length is 10mm, and requires the relative center hole in each engage journal position to beat to be less than 0.02mm.For the processing of this series products, can ensure machining accuracy by the mode that adopts repeatedly feed, but passing rate of processing is low, working (machining) efficiency is low, can't realize the processing of high-efficiency and precision.
Summary of the invention
The object of this invention is to provide a kind of processing method of deep hole reducing inner chamber, can realize draw ratio and be greater than 20, diameter variation exceedes 10%, and length of transition zone is less than the processing of 10% complicated deep hole reducing inner chamber of total length, and it is high to reach precision, the feature that efficiency is high.
Concrete technical scheme of the present invention is that the processing method of described a kind of deep hole reducing inner chamber comprises the following steps:
1. before processing, prepare:
Adopt three-dimensional drawing software to carry out digitlization part configuration, and data are inputted to Digit Control Machine Tool;
Adjust Digit Control Machine Tool, make the spindle rotation accuracy of Digit Control Machine Tool in 0.02mm;
Ultrasonic vibration cutting device clamping, on Digit Control Machine Tool, is regulated to cutting tool for boring, make the boring bar center line of cutter and main shaft of numerical control machine tool centre of gyration axiality in 0.02mm;
Regulate vibration parameters when tool sharpening: vibration frequency is 20KHz, and point of a knife horizontal vibration amplitude is 5 μ m, and the vertical amplitude of point of a knife is 5 μ m, vibrational state is the counterclockwise elliptical vibration during towards main shaft;
2. processing external diameter:
The external diameter of part is machined to given size;
3. roughing internal diameter:
Large footpath, path and the reduced diameter portion of processing parts inside, processing mode is boring, and processing mode is the feed processing of all positions, and the axial dimension after processing is to given size, and the surplus of radial dimension is 0.8-1.2mm;
4. fine finishining internal diameter:
The two ends of the part after roughing are defined as respectively to left end and right-hand member, the left end of part is arranged on Digit Control Machine Tool by chuck, centre frame is arranged on Central of the parts towards left end 10-12mm place, after clamping, adjust, after adjusting, on part, beating of distance chuck position 600mm is not more than 0.05mm, and the circle of the end face of right-hand member is beated and is not more than 0.08mm;
The endoporus of processing right-hand member by the cutting tool for boring of vibration cutting device is to surplus 0.05-0.15mm, open ultrasonic vibration installation and carry out vibrocutting, the UVC depth of cut is not more than 0.15mm, and the amount of feeding is not more than 0.1mm/r, until be machined to given size;
Part is pulled down from lathe, upset clamping and processing, clamping is identical with work step above with manufacturing procedure;
5. processing transition face:
Clamping has been worked into the part of required surplus, and the large diameter of part is positioned at right side, and after clamping, beating of distance chuck 100mm place is not more than 0.02mm, and the circle at right side place is beated and is not more than 0.05mm, and center rest support is apart from 10-12mm place, changeover portion left side; According to the profile machining programming of the transition face of processing, boring cutter proceeds to the leftmost side of the larger deep hole of diameter, by procedure control boring cutter, one side continues inside feeding, one side is carried out cutter contractile motion, point three reducing boring changeover portions, each amount of feeding is surplus 1/3, it is qualified that transition face is machined to;
6. final inspection.
Described step 3 to the process equipment in 5 is same equipment.
The present invention, by turning clamping, has improved the rigidity situation of weak rigidity part, has ensured the precision of ultrasonic vibration processing work.In process, adopt little amplitude, little cutting-in, supersonic frequency vibration to carry out variable cross-section processing, reduce the surface roughness of workpiece, improve the dimensional accuracy of workpiece.A feed of boring in whole process, thus realized complicated deep hole reducing inner chamber high-precision workpiece feed processing, save the operations such as cutter of repeatedly advancing and retreat, the machining accuracy that can double.After certain allowance, start to carry out vibrocutting by carrying out common accurate boring, avoid continuing with large residual stress and the high temperature of its generation of conventional cutting, and cutting force will make the gross distortion of workpiece greatly, thereby do not reach the desired dimensional accuracy of workpiece; Also the cutter relieving of having avoided tool wear to cause serious simultaneously, needs the operation of withdrawing tool changing midway.Proposition of the present invention be a kind of processing method that is applicable to processed complex deep hole reducing inner chamber, this processing method only realizes the processing of whole complicated deep hole reducing inner chamber part with feed mode of boring, change traditional step of complicated deep hole reducing inner chamber part being processed to the cutter processing of need to repeatedly advancing and retreat, effectively shorten process time, improved the crudy of complicated deep hole reducing inner chamber part.Processing method of the present invention especially can realize to draw ratio be greater than 40, reducing ratio is greater than 10%, dimensional accuracy is at ± 0.008mm, the complicated deep hole reducing inner chamber that circle is beated in 0.015mm is processed.
Detailed description of the invention
A kind of processing method of deep hole reducing inner chamber comprises the following steps:
1. before processing, prepare:
Adopt three-dimensional drawing software to carry out digitlization part configuration, and data are inputted to Digit Control Machine Tool;
Adjust Digit Control Machine Tool, make the spindle rotation accuracy of Digit Control Machine Tool in 0.02mm;
Ultrasonic vibration cutting device clamping, on Digit Control Machine Tool, is regulated to cutting tool for boring, make the boring bar center line of cutter and main shaft of numerical control machine tool centre of gyration axiality in 0.02mm;
Regulate vibration parameters when tool sharpening: vibration frequency is 20KHz, and point of a knife horizontal vibration amplitude is 5 μ m, and the vertical amplitude of point of a knife is 5 μ m, vibrational state is the counterclockwise elliptical vibration during towards main shaft;
2. processing external diameter:
The external diameter of part is machined to given size;
3. roughing internal diameter:
Large footpath, path and the reduced diameter portion of processing parts inside, processing mode is boring, and processing mode is the feed processing of all positions, and the axial dimension after processing is to given size, and the surplus of radial dimension is 0.8-1.2mm;
4. fine finishining internal diameter:
The two ends of the part after roughing are defined as respectively to left end and right-hand member, the left end of part is arranged on Digit Control Machine Tool by chuck, centre frame is arranged on Central of the parts towards left end 10-12mm place, after clamping, adjust, after adjusting, on part, beating of distance chuck position 600mm is not more than 0.05mm, and the circle of the end face of right-hand member is beated and is not more than 0.08mm;
The endoporus of processing right-hand member by the cutting tool for boring of vibration cutting device is to surplus 0.05-0.15mm, open ultrasonic vibration installation and carry out vibrocutting, the UVC depth of cut is not more than 0.15mm, and the amount of feeding is not more than 0.1mm/r, until be machined to given size;
Part is pulled down from lathe, upset clamping and processing, clamping is identical with work step above with manufacturing procedure;
5. processing transition face:
Clamping has been worked into the part of required surplus, and the large diameter of part is positioned at right side, and after clamping, beating of distance chuck 100mm place is not more than 0.02mm, and the circle at right side place is beated and is not more than 0.05mm, and center rest support is apart from 10-12mm place, changeover portion left side; According to the profile machining programming of the transition face of processing, boring cutter proceeds to the leftmost side of the larger deep hole of diameter, by procedure control boring cutter, one side continues inside feeding, one side is carried out cutter contractile motion, point three reducing boring changeover portions, each amount of feeding is surplus 1/3, it is qualified that transition face is machined to;
6. final inspection.
Described step 3 to the process equipment in 5 is same equipment.
Embodiment mono-
The processing of certain h type engine h central transmission bar, material 18Cr2Ni4WA, length 778 ± 0.2mm, inner large footpath Φ 19mm, path Φ 14mm, transition zone length is 10mm, is positioned at drive link middle part, its concrete procedure of processing is:
1, before processing, prepare
Adopt three-dimensional drawing software to carry out digitlization part configuration, and data are inputted to Digit Control Machine Tool;
Adjust Digit Control Machine Tool, after adjusting, the spindle rotation accuracy of Digit Control Machine Tool is 0.015mm;
Ultrasonic vibration cutting device clamping, on Digit Control Machine Tool, is regulated to cutting tool for boring, and the boring bar center line of cutter and main shaft of numerical control machine tool centre of gyration axiality are 0.015mm;
Regulate vibration parameters when tool sharpening: vibration frequency is 20KHz, and point of a knife horizontal vibration amplitude is 5 μ m, and the vertical amplitude of point of a knife is 5 μ m, vibrational state is the counterclockwise elliptical vibration during towards main shaft;
2, processing external diameter
The external diameter of part is machined to given size;
3, roughing internal diameter:
By large footpath, path and the reduced diameter portion of the Digit Control Machine Tool processing parts inside of adjusting, processing mode is boring, and processing mode is the feed processing of all positions, and the axial dimension after processing is to given size, and the surplus of radial dimension is 1.0mm;
4, fine finishining internal diameter:
The two ends of the part after roughing are defined as respectively to left end and right-hand member, the left end of part is arranged on Digit Control Machine Tool by chuck, centre frame is arranged on Central of the parts towards left end 10mm place, after clamping, adjust, the beating for 0.03mm of distance chuck position 600mm on part after adjusting, the circle of the end face of right-hand member is beated for 0.05mm;
After endoporus to the surplus of the cutting tool for boring processing right-hand member by vibration cutting device is 0.10mm, opens ultrasonic vibration installation and carry out vibrocutting, the UVC depth of cut is 0.05mm, and the amount of feeding is 0.1mm/r, until be machined to given size;
Part is pulled down from lathe, upset clamping and processing, clamping is identical with work step above with manufacturing procedure;
5. processing transition face:
Clamping has been worked into the part of required surplus, and the large diameter of part is positioned at right side, the beating for 0.01mm of distance chuck 100mm place after clamping, and the circle at right side place is beated for 0.04mm, and center rest support is apart from about 10mm place, changeover portion left side; According to the profile machining programming of the transition face of processing, boring cutter proceeds to the leftmost side of the larger deep hole of diameter, by procedure control boring cutter, one side continues inside feeding, one side is carried out cutter contractile motion, point three reducing boring changeover portions, each amount of feeding is surplus 1/3, it is qualified that transition face is machined to;
6. final inspection.
After processing, the each size of endoporus meets drawing requirement, Wall-Thickness Difference 0.03mm, and compared with conventional machining method, the method process is steady, and tool wear is normal.Conclusion, part is qualified.

Claims (2)

1. a processing method for deep hole reducing inner chamber, is characterized in that, described method comprises the following steps:
1) before processing, prepare:
Adopt three-dimensional drawing software to carry out digitlization part configuration, and data are inputted to Digit Control Machine Tool;
Adjust Digit Control Machine Tool, make the spindle rotation accuracy of Digit Control Machine Tool in 0.02mm;
Ultrasonic vibration cutting device clamping, on Digit Control Machine Tool, is regulated to cutting tool for boring, make the boring bar center line of cutter and main shaft of numerical control machine tool centre of gyration axiality in 0.02mm;
Regulate vibration parameters when tool sharpening: vibration frequency is 20KHz, and point of a knife horizontal vibration amplitude is 5 μ m, and the vertical amplitude of point of a knife is 5 μ m, vibrational state is the counterclockwise elliptical vibration during towards main shaft;
2) processing external diameter:
The external diameter of part is machined to given size;
3) roughing internal diameter:
Large footpath, path and the reduced diameter portion of processing parts inside, processing mode is boring, and processing mode is the feed processing of all positions, and the axial dimension after processing is to given size, and the surplus of radial dimension is 0.8-1.2mm;
4) fine finishining internal diameter:
The two ends of the part after roughing are defined as respectively to left end and right-hand member, the left end of part is arranged on Digit Control Machine Tool by chuck, centre frame is arranged on Central of the parts towards left end 10-12mm place, after clamping, adjust, after adjusting, on part, beating of distance chuck position 600mm is not more than 0.05mm, and the circle of the end face of right-hand member is beated and is not more than 0.08mm;
The endoporus of processing right-hand member by the cutting tool for boring of vibration cutting device is to surplus 0.05-0.15mm, open ultrasonic vibration installation and carry out vibrocutting, the UVC depth of cut is not more than 0.15mm, and the amount of feeding is not more than 0.1mm/r, until be machined to given size;
Part is pulled down from lathe, upset clamping and processing, clamping is identical with work step above with manufacturing procedure;
5) processing transition face:
Clamping has been worked into the part of required surplus, and the large diameter of part is positioned at right side, and after clamping, beating of distance chuck 100mm place is not more than 0.02mm, and the circle at right side place is beated and is not more than 0.05mm, and center rest support is apart from 10-12mm place, changeover portion left side; According to the profile machining programming of the transition face of processing, boring cutter proceeds to the leftmost side of the larger deep hole of diameter, by procedure control boring cutter, one side continues inside feeding, one side is carried out cutter contractile motion, point three reducing boring changeover portions, each amount of feeding is surplus 1/3, it is qualified that transition face is machined to;
6) final inspection.
2. the processing method of a kind of deep hole reducing inner chamber as claimed in claim 1, is characterized in that described step 3) to 5) in process equipment be same equipment.
CN201410200799.9A 2014-05-13 2014-05-13 Machining method for deep hole reducing inner cavity CN104001958A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105215394A (en) * 2015-10-23 2016-01-06 西安航空动力股份有限公司 A kind of method adopting different drop cutter head deep hole processing profile
CN105479100A (en) * 2014-09-16 2016-04-13 上海重型机器厂有限公司 Deep hole finish machining method of motor casing of nuclear main pump
CN107116348A (en) * 2017-02-23 2017-09-01 嘉兴学院 The embedded SMA actuators method for the mould of falling draw taper
CN108067633A (en) * 2017-12-06 2018-05-25 中国航发哈尔滨东安发动机有限公司 A kind of surface micro-structure and its array vibration processing method
CN109048390A (en) * 2018-08-10 2018-12-21 哈尔滨工业大学 A kind of titanium alloy ultraprecise processing method based on ultrasonic elliptical vibratory cutting technology
CN110695388A (en) * 2019-10-24 2020-01-17 成都飞机工业(集团)有限责任公司 Method for machining coaxiality hole
CN111014747A (en) * 2019-12-18 2020-04-17 内蒙古第一机械集团股份有限公司 High-power-diameter hole series machining method
CN111673143A (en) * 2020-05-29 2020-09-18 中国航发南方工业有限公司 Method for machining precise deep hole by automatic compensation cutting of vibration reduction tool and casing

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CN102717115A (en) * 2012-06-14 2012-10-10 北京航空航天大学 High-speed intermittent ultrasonic vibration cutting method for low-rigidity parts

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105479100A (en) * 2014-09-16 2016-04-13 上海重型机器厂有限公司 Deep hole finish machining method of motor casing of nuclear main pump
CN105215394A (en) * 2015-10-23 2016-01-06 西安航空动力股份有限公司 A kind of method adopting different drop cutter head deep hole processing profile
CN105215394B (en) * 2015-10-23 2017-10-31 西安航空动力股份有限公司 A kind of method using different drop cutter head deep hole processing type faces
CN107116348A (en) * 2017-02-23 2017-09-01 嘉兴学院 The embedded SMA actuators method for the mould of falling draw taper
CN107116348B (en) * 2017-02-23 2019-07-09 嘉兴学院 The embedded SMA actuators method for the mold of falling draw taper
CN108067633A (en) * 2017-12-06 2018-05-25 中国航发哈尔滨东安发动机有限公司 A kind of surface micro-structure and its array vibration processing method
CN109048390A (en) * 2018-08-10 2018-12-21 哈尔滨工业大学 A kind of titanium alloy ultraprecise processing method based on ultrasonic elliptical vibratory cutting technology
CN109048390B (en) * 2018-08-10 2020-05-19 哈尔滨工业大学 Titanium alloy ultra-precision machining method based on ultrasonic elliptical vibration cutting technology
CN110695388A (en) * 2019-10-24 2020-01-17 成都飞机工业(集团)有限责任公司 Method for machining coaxiality hole
CN111014747A (en) * 2019-12-18 2020-04-17 内蒙古第一机械集团股份有限公司 High-power-diameter hole series machining method
CN111673143A (en) * 2020-05-29 2020-09-18 中国航发南方工业有限公司 Method for machining precise deep hole by automatic compensation cutting of vibration reduction tool and casing

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