CN105921943B - A kind of thin-walled ring axial step deep hole system processing method - Google Patents

A kind of thin-walled ring axial step deep hole system processing method Download PDF

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Publication number
CN105921943B
CN105921943B CN201610354502.3A CN201610354502A CN105921943B CN 105921943 B CN105921943 B CN 105921943B CN 201610354502 A CN201610354502 A CN 201610354502A CN 105921943 B CN105921943 B CN 105921943B
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China
Prior art keywords
hole
deep hole
thin
drilled
walled ring
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CN201610354502.3A
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CN105921943A (en
Inventor
艾敏
王威
章国伟
杨晓东
崔灵敏
许俊峰
刘建信
张森
赵端阳
陈浩
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Shanxi spaceflight Qinghua Equipment Co., Ltd.
China Academy of Launch Vehicle Technology CALT
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QINGHUA MACHINERY PLANT CHANGZHI
China Academy of Launch Vehicle Technology CALT
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/02Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important

Abstract

The present invention relates to a kind of thin-walled ring axial step deep hole system processing methods, belong to thin-walled annulate shaft to stepped hole processing technique field, it provides a kind of easy to operate, high precision machining, the thin-walled ring axial step deep hole system processing method that working efficiency significantly improves, used technical solution is that thin-walled ring body is horizontally fixed on operation console, passes through the clamp pressing on operation console;The positioning center hole of step deep hole is drilled out in the end face of thin-walled ring using centre drill;The prebored hole of macropore in step deep hole is drilled out on positioning center hole using cold drill bit in hard alloy;The guide hole that aperture in step deep hole is drilled out on positioning center hole is drilled in using guiding;Drill out the prebored hole of aperture in step deep hole in guide hole using cold drill bit in hard alloy again;Cold spiral cutting sword step combined shaping reamer in hard alloy, one-time positioning cutting is finally used to complete the hole wall and step of step deep hole, machine;The present invention is widely used in the processing of thin-walled ring axial step deep hole.

Description

A kind of thin-walled ring axial step deep hole system processing method
Technical field
The present invention relates to a kind of thin-walled ring axial step deep hole system processing methods, belong to thin-walled annulate shaft to step hole machined skill Art field.
Background technology
Thin ring wall axial step deep hole system is processed as universal machine processing technology.Thin ring wall axial step existing at present is deep Hole system tooling step is tediously long, while the processing difficulties of thin ring wall axial step deep hole architecture mainly have everywhere:1)Thin-walled ring body Radial direction(Diametric(al))Static stiffness is insufficient, it is easy to clamping unstability occur;2)The axis of step deep hole is easy to deviate, parallel Spend 0.06mm it is difficult to ensure that;3)The tooling step of step deep hole system is complicated, and processing efficiency is very low(About 6h);4)φ in step deep hole 7.5H8()The holes mm and φ 6H8()The concentricity φ 0.015mm in the holes mm it is difficult to ensure that.
Invention content
For the technical problem for solving of the existing technology, the present invention provides a kind of easy to operate, high precision machining, works The thin-walled ring axial step deep hole system processing method significantly improved as efficiency.
To achieve the above object, the technical solution adopted in the present invention is a kind of processing side of thin-walled ring axial step deep hole system Method follows the steps below,
A, thin-walled ring body is horizontally fixed on operation console, passes through the clamp pressing on operation console;
B, the positioning center hole of step deep hole is drilled out in the end face of thin-walled ring using centre drill;
C, the prebored hole of macropore in step deep hole is drilled out on positioning center hole using cold drill bit in hard alloy;
D, the guide hole that aperture in step deep hole is drilled out on positioning center hole is drilled in using guiding;
E, the prebored hole of aperture in step deep hole is drilled out in guide hole using cold drill bit in hard alloy again;
F, cold spiral cutting sword step combined shaping reamer in hard alloy, one-time positioning cutting is finally used to complete step The hole wall and step of deep hole, machine.
Preferably, in drilling, the circular runout of drill bit is not more than 0.003mm.
Preferably, drill bit answers the slow-speed of revolution, the small amount of feeding to enter in the step e, after suspending several seconds, then with normal rotating speed And the amount of feeding is processed.
Preferably, in the step a fixture screw-down torque ranging from 9Nm~10Nm.
Preferably, reamer geometry agrees with the shape of step deep hole in the step f, and the concentricity of two outer circle of step is not more than 0.002mm。
Compared with prior art, the present invention has the following technical effects:The present invention uses decreasing pore size substep semifinishing Step deep hole based on drilling more shallow bore hole axis more is not easy the principle deviateed, first processes large diameter hole, reprocesses small diameter bore, leads to It crosses and shares hole depth in each drilling work step to shorten the depth of single drilling, to ensure the positioning of step deep hole entirety axis Precision, the depth of parallelism;Shorter based on processing chain, the higher principle of processing efficiency reduces processing work by the above processing method Step, to improve processing efficiency;Simultaneously using cold spiral cutting sword step combined shaping reamer in hard alloy, one-time positioning is cut The whole ream forming for completing step deep hole hole wall, step is cut, to ensure that the concentricity of step deep hole, surface roughness are wanted It asks.
Specific implementation mode
In order to make technical problems, technical solutions and advantages to be solved be more clearly understood, tie below Embodiment is closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to solve The present invention is released, is not intended to limit the present invention.
A kind of thin-walled ring axial step deep hole system processing method, it is characterised in that:It follows the steps below,
A, thin-walled ring body is horizontally fixed on operation console, passes through the clamp pressing on operation console;Using pressing plate along thin-walled The axial compression thin-walled ring body end face of ring body, pressure point is uniformly distributed along thin-walled ring body circumferential end surfaces, and the screw-down torque of fixture is ranging from 9Nm~10Nm.Since the radial Static stiffness of thin-walled ring body is insufficient, relative to using scroll chuck, chuck, pressing plate etc. Process unit clamps, more difficult generation clamping deformation and clamping unstability;
B, the positioning center hole of step deep hole is drilled out in the end face of thin-walled ring using centre drill;
C, the prebored hole of macropore in step deep hole is drilled out on positioning center hole using cold drill bit in hard alloy;
D, the guide hole that aperture in step deep hole is drilled out on positioning center hole is drilled in using guiding;
E, the prebored hole of aperture in step deep hole is drilled out in guide hole using cold drill bit in hard alloy again;Drill bit is answered low Rotating speed, the small amount of feeding enter, and after several seconds of pause, then are processed with normal rotating speed and the amount of feeding.
F, cold spiral cutting sword step combined shaping reamer in hard alloy, one-time positioning cutting is finally used to complete step The hole wall and step of deep hole, machine, and reamer geometry agrees with the shape of step deep hole, and the concentricity of two outer circle of step is not more than 0.002mm。
In drilling, the circular runout of drill bit is not more than 0.003mm, while ensureing that cutter is fully cooled.
The stable state of thin-walled ring body can be realized, without deformation using quantization torque axial direction clamping thin sheet ring wall end face technique in the present invention Clamping;Decreasing pore size substep semifinishing step deep hole is used simultaneously, based on drilling more shallow bore hole axis more is not easy the principle deviateed, Large diameter hole is first processed, small diameter bore is reprocessed, by sharing in each drilling work step hole depth to shorten the depth of single drilling Degree, to ensure positioning accuracy, the depth of parallelism of step deep hole entirety axis;Shorter based on processing chain, processing efficiency is higher Principle reduces tooling step, to improve processing efficiency by the above processing method;Simultaneously using cold spiral in hard alloy Cutting edge step combined shaping reamer, the whole ream forming of step deep hole hole wall, step is completed in one-time positioning cutting, to protect Demonstrate,prove concentricity, the surface roughness requirements of step deep hole.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement etc., should all wrap within the scope of the present invention made by within refreshing and principle.

Claims (2)

1. a kind of thin-walled ring axial step deep hole system processing method, it is characterised in that:It follows the steps below,
A, thin-walled ring body is horizontally fixed on operation console, passes through the clamp pressing on operation console;
B, the positioning center hole of step deep hole is drilled out in the end face of thin-walled ring using centre drill;
C, the prebored hole of macropore in step deep hole is drilled out on positioning center hole using cold drill bit in hard alloy;
D, the guide hole that aperture in step deep hole is drilled out on positioning center hole is drilled in using guiding;
E, the prebored hole of aperture in step deep hole is drilled out in guide hole using cold drill bit in hard alloy again;
F, cold spiral cutting sword step combined shaping reamer in hard alloy, one-time positioning cutting is finally used to complete step deep hole Hole wall and step, machine;
Drill bit answers the slow-speed of revolution, the small amount of feeding to enter in the step e, after several seconds of pause, then with normal rotating speed and the amount of feeding into Row processing;
Screw-down torque ranging from 9Nm~10Nm of fixture in the step a;
Reamer geometry agrees with the shape of step deep hole in the step f, and the concentricity of two outer circle of step is not more than 0.002mm.
2. a kind of thin-walled ring axial step deep hole system according to claim 1 processing method, it is characterised in that:It is drilling When, the circular runout of drill bit is not more than 0.003mm.
CN201610354502.3A 2016-05-26 2016-05-26 A kind of thin-walled ring axial step deep hole system processing method Active CN105921943B (en)

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107322049A (en) * 2017-07-28 2017-11-07 宁波市北仑辉旺铸模实业有限公司 A kind of deep hole processing technology for five-axis robot
CN107414117B (en) * 2017-07-28 2019-12-27 宁波市北仑辉旺铸模实业有限公司 Drilling process for deep hole machining of hard material
CN109551171A (en) * 2017-09-23 2019-04-02 镇江大力液压马达股份有限公司 A kind of cycloid hydraulic motor radial direction hole forming method
CN108213506B (en) * 2017-11-28 2019-04-12 中国航发西安动力控制科技有限公司 The processing method of the small bearing hole of profound step in high precision
CN108115176B (en) * 2017-12-18 2019-12-03 航天科工哈尔滨风华有限公司 A kind of high-precision step shaft titanium alloy material Fine and Deep Hole high-efficiency machining method
CN109079447B (en) * 2018-10-18 2020-05-01 中船动力有限公司 Deep hole machining method for diesel engine frame
CN109531202A (en) * 2018-11-30 2019-03-29 湖北华阳汽车变速系统股份有限公司 Guarantee that the shift fork that symmetry requires intersects hole processing technical method
CN109604682B (en) * 2018-12-20 2020-06-05 哈尔滨电气动力装备有限公司 High-precision conical surface deep hole machining process for large-scale shielding motor temperature sensor sleeve

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CN101758251A (en) * 2009-11-28 2010-06-30 芜湖长胜机械制造有限公司 Cutter for processing step hole workpiece on lathe and using method thereof
CN203184720U (en) * 2013-03-22 2013-09-11 吴江市金明机械有限公司 Step drilling cutter
CN203221250U (en) * 2013-01-09 2013-10-02 广西玉柴机器股份有限公司 Processing cutter for composite finish ream of stair long holes
CN103769686A (en) * 2014-01-14 2014-05-07 常州市恒晁工具制造有限公司 Welding type ladder reamer
CN204209186U (en) * 2014-09-26 2015-03-18 深圳市华阳通达精密机械有限公司 Step deep hole machining is bored
CN105382284A (en) * 2015-12-10 2016-03-09 重庆市璧山区才立金属科技有限公司 Tool used for machining ladder holes

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JP2009184044A (en) * 2008-02-05 2009-08-20 Tungaloy Corp Stepped twist drill and method of manufacturing the same

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Publication number Priority date Publication date Assignee Title
CN101758251A (en) * 2009-11-28 2010-06-30 芜湖长胜机械制造有限公司 Cutter for processing step hole workpiece on lathe and using method thereof
CN203221250U (en) * 2013-01-09 2013-10-02 广西玉柴机器股份有限公司 Processing cutter for composite finish ream of stair long holes
CN203184720U (en) * 2013-03-22 2013-09-11 吴江市金明机械有限公司 Step drilling cutter
CN103769686A (en) * 2014-01-14 2014-05-07 常州市恒晁工具制造有限公司 Welding type ladder reamer
CN204209186U (en) * 2014-09-26 2015-03-18 深圳市华阳通达精密机械有限公司 Step deep hole machining is bored
CN105382284A (en) * 2015-12-10 2016-03-09 重庆市璧山区才立金属科技有限公司 Tool used for machining ladder holes

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Address after: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi

Co-patentee after: China Academy of Launch Vehicle Technology

Patentee after: Shanxi spaceflight Qinghua Equipment Co., Ltd.

Address before: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi

Co-patentee before: China Academy of Launch Vehicle Technology

Patentee before: Qinghua Machinery Plant, Changzhi