CN106112035B - A kind of processing unit (plant) and processing method of conical thin-wall case - Google Patents

A kind of processing unit (plant) and processing method of conical thin-wall case Download PDF

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Publication number
CN106112035B
CN106112035B CN201610481979.8A CN201610481979A CN106112035B CN 106112035 B CN106112035 B CN 106112035B CN 201610481979 A CN201610481979 A CN 201610481979A CN 106112035 B CN106112035 B CN 106112035B
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CN
China
Prior art keywords
conical
processed
parts
soft
chuck
Prior art date
Application number
CN201610481979.8A
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Chinese (zh)
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CN106112035A (en
Inventor
王元成
杨蒲莉
罗志鹏
孙旭
杨普文
刘杰
朱幼芬
Original Assignee
湖北三江航天万峰科技发展有限公司
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Priority to CN201610481979.8A priority Critical patent/CN106112035B/en
Publication of CN106112035A publication Critical patent/CN106112035A/en
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Publication of CN106112035B publication Critical patent/CN106112035B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02Chucks
    • B23B31/10Chucks characterised by the retaining or gripping devices or their immediate operating means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B31/00Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40Expansion mandrels
    • B23B31/404Gripping the work or tool by jaws moving radially controlled by conical surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B5/00Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor

Abstract

The invention discloses a kind of processing unit (plant) and processing method of conical thin-wall case, including:Chuck;Three soft pawls, are distributed, and be installed on chuck in equilateral triangle;Tail bone is positioned, front end geometry is adapted to conical socket, and rear end offers center hole.Present invention employs the soft pawl of flexible claw and positioning tail bone to coordinate, positioning tail bone supports soft pawl afterbody, top withstand to position tail bone and promote positioning tail bone to strut the clamping method that soft pawl enables soft pawl to prop up part inwall, is positioned with part inwall and the big end medial surface of part.Inwall is supported by soft pawl, with reference to the self centering effect of lathe and the positioning of positioning tail bone, it ensure that the part centre of gyration and machine tool chief axis are concentric after clamping so that in part process, quick-clamping can be realized, the automatic capturing part centre of gyration, carry out precision positioning, efficiency high, clamping deformation is small, Dimension Measurement precision is high, uniform wall thickness, it is easier to meets parts size precision requirement.

Description

A kind of processing unit (plant) and processing method of conical thin-wall case
Technical field
The invention belongs to the field of machining of thin-wall part, and in particular to a kind of machining dress of thin-walled conical shell Put and processing method.
Background technology
In recent years, in the machining production process of popular machinery plant, the processing ratio of thin wall component is increasing, and Shape becomes increasingly complex, dimensional accuracy and surface roughness requirements more and more higher.Especially with the fast development of manufacturing technology, Casting technique as it is a kind of less, without Cutting Process, be widely used in the fields such as machinery, metallurgy, space flight, shape can be cast The complicated various high-strength accurate thin-section castings of shape.For example, casting thin-wall case has gradually replaced welding, riveting or forging shell Body, cost can not only be greatly reduced, shorten the manufacturing cycle, and the intensity of housing can be ensured and improve its processing technology Performance.Such as the conical parts of thin-wall casing of one kind casting, the direct casting of inner surface, no longer it is machined, inner chamber point Cloth boss, grid ribs are complicated, and wall is thin (about 1-3mm), it is desirable to uniform wall thickness (wall thickness deviation is no more than 0.1mm).In reality In process, because the rigidity (especially radially rigidity) of part is poor, cutting vibration easily occurs, produces the line that quivers, processes Deformation;Separately because complicated, clamping centering is difficult, and deviation easily occurs in wall thickness, dimensional accuracy it is difficult to ensure that.
A kind of existing processing method of thin-walled conical shell is:1) on the same section of pincers worker centering one end inwall high point with it is low Point, look for axle center, mark signature center line.2) high point and low spot on the same section of pincers worker centering other end inwall, look for axle center, mark signature Center line.3) boring machine centering scribing by bench worker, the transverse plane of boring one and inner circle.4) 180 ° of worktable rotary, another transverse plane of boring and interior Circle.5) mandrel clamping, the turning conical surface.
Following problems be present in this processing method:
1) scribing by bench worker correct error is larger, and is influenceed by processor Personal Skills.
2) there is certain error in boring machine centering scribing by bench worker.
3) boring machine clamping centering is difficult, and part, which is fixed and clamped, has larger clamping deformation.
4) manufacturing procedure is grown, and efficiency is low.
5) because of clamping correct error and clamping deformation, parts size precision it is difficult to ensure that.
The existing another processing method of thin-walled conical shell is:1) chuck clamps one end inner circle, centering inwall, car End face and inner circle.2) part is reversed end for end, and chuck clamps other end inner circle, centering inwall, face work and inner circle.3) mandrel fills Folder, the turning conical surface.
Following problems be present in this processing method:
1) it is more than 2 part for draw ratio, part hinged cantilever is processed, and security risk is larger.
2) part needs to adjust the position of four paws clamping repeatedly, determines part axial line by centering inwall, wastes time and energy.
3) there is larger clamping deformation in four paws clamping.
4) it is distributed the part of grid ribs and more boss in length and breadth for inwall, it is difficult to centering.
5) because of clamping correct error and clamping deformation, parts size precision it is difficult to ensure that.
The content of the invention
The present invention provides a kind of machinery processing apparatus and processing method of conical thin-wall case, solves this special construction The thin-wall part of form is low using conventional machining process efficiency, and clamping correct error is big and larger clamping deformation be present, The problem of being difficult to meet parts size precision index.
A kind of conical thin-wall case processing unit (plant) of the present invention, including:
Chuck;
Three soft pawls, are distributed in equilateral triangle, and are installed on chuck, the bullet that soft pawl includes base, is connected with base Property claw, floor installation form locating slot on chuck between resilient prong and base;The cross section of resilient prong is sector, Longitudinal direction has a male cone (strobilus masculinus), and the taper of male cone (strobilus masculinus) is consistent with parts to be processed inwall taper;The free end of resilient prong is provided with inner cone Face, the inner conical surface of three resilient prongs collectively constitute conical socket;
Tail bone is positioned, front end geometry is adapted to conical socket, and rear end offers center hole.
Further, the male cone (strobilus masculinus) of soft pawl offers the slot to make way of corresponding parts to be processed internal structure.
Further, positioning tail bone is ladder configuration, and front end is conical nose, and rear end is cylindrical tail portion, center hole It is opened on the end face of cylindrical tail portion.
Further, chuck is provided with raised mounting blocks, and screwed hole is offered on mounting blocks;Base offers corresponding peace The mounting groove of block is filled, mounting groove offers the through hole of corresponding screwed hole;Base is bolted with mounting blocks.
Present invention also offers a kind of processing method of the conical thin-wall case of the processing unit (plant) based on claim 1, It is characterised in that it includes following steps:
(1) resilient prong of three soft pawls is loaded into parts to be processed from the big end of parts to be processed;
(2) three soft pawls are installed on chuck, three soft pawls are distributed in equilateral triangle;
(3) tail bone will be positioned to insert inside parts to be processed from the small end of parts to be processed and with conical socket coordinate, it is fixed Position tail bone struts resilient prong under lathe centre effect, the male cone (strobilus masculinus) of resilient prong and the inwall of parts to be processed is closely matched somebody with somebody Close, while the inner face at the big end of parts to be processed can be close with the side wall of locating slot under the tension force effect that resilient prong is softened Coordinate;
(4) turnery processing is started.
Further, the male cone (strobilus masculinus) of soft pawl offers the slot to make way of corresponding parts to be processed internal structure.
Further, positioning tail bone is ladder configuration, and front end is conical nose, and rear end is cylindrical tail portion, center hole It is opened on the end face of cylindrical tail portion.
Further, chuck is provided with raised mounting blocks, and screwed hole is offered on mounting blocks;Base offers corresponding peace The mounting groove of block is filled, mounting groove offers the through hole of corresponding screwed hole;Base is bolted with mounting blocks.
In general, compared with prior art, present invention employs the soft pawl of flexible claw and positioning tail bone to coordinate, Positioning tail bone support soft pawl afterbody, it is top withstand positioning tail bone and promote to position tail bone strut soft pawl and enable soft pawl to prop up zero The clamping method of part inwall, positioned with part inwall and the big end medial surface of part.Inwall is supported by soft pawl, it is automatic with reference to lathe The effect of centering and the positioning for positioning tail bone, it ensure that the part centre of gyration and machine tool chief axis are concentric after clamping so that part In process, quick-clamping can be realized, the automatic capturing part centre of gyration, carries out precision positioning, efficiency high, clamping deformation Small, Dimension Measurement precision is high, uniform wall thickness, it is easier to meets parts size precision requirement.
Brief description of the drawings
Fig. 1 is that parts fixation coordinates overall schematic;
Fig. 2 is part schematic diagram;
Fig. 3 is soft pawl and positioning tail bone cooperation schematic diagram;
Fig. 4 is Fig. 3 decomposing schematic representation.
In all of the figs, identical reference is used for representing identical element or structure, wherein:
The screwed hole 12 of 1 mounting blocks of chuck 11
The soft mounting groove 211 of 2 base of pawl 21
The locating slot 221 of 212 resilient prong of through hole 22
Position the slot to make way 223 of 2211 male cone (strobilus masculinus) of groove sidewall 222
The parts to be processed 3 of 224 conical socket of inner conical surface 225
Position the cylindrical tail portion 42 of 4 conical nose of tail bone 41
The lathe centre 5 of center hole 421
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below Conflict can is not formed each other to be mutually combined.
Fig. 1~Fig. 4 is preferred embodiment of the present invention schematic diagram.The processing unit (plant) of the present embodiment, including:Chuck 1, chuck 1 Raised mounting blocks 11 are provided with, screwed hole (not shown) is offered on mounting blocks 11;Three soft pawls 2, in equilateral triangle point Cloth, and be installed on chuck 1, the resilient prong 22 that soft pawl 2 includes base 21, is connected with base 21, base 21 is arranged on chuck 1 On, base 21 offers the mounting groove 211 of corresponding mounting blocks 11, and mounting groove 211 offers the through hole 212 of corresponding screwed hole;Bottom Seat 21 is connected with mounting blocks 11 by bolt (not shown).
Locating slot 221 is formed between resilient prong 22 and base 21;The cross section of resilient prong 22 is sector, is longitudinally had Male cone (strobilus masculinus) 222, the taper of male cone (strobilus masculinus) 222 is consistent with the inwall taper of parts to be processed 3, and male cone (strobilus masculinus) 222 offers corresponding to be processed The slot to make way 223 of the internal structure of part 3;The free end of resilient prong 22 is provided with inner conical surface 224, the inner cone of three resilient prongs 22 Face 224 collectively constitutes conical socket 225;Tail bone 4 is positioned, front end geometry is adapted to conical socket 225, and rear end offers center hole 421, positioning tail bone 4 is ladder configuration, and front end is conical nose 41, and rear end is cylindrical tail portion 42, and center hole 421 is opened in On the end face of cylindrical tail portion 42.
Based on said apparatus, the processing method of this preferred embodiment comprises the following steps:
(1) resilient prong 22 of three soft pawls 2 is loaded into parts to be processed 3 from the big end of parts to be processed 3;
(2) three soft pawls 2 are installed on chuck 1, three soft pawls 2 are distributed in equilateral triangle;
(3) tail bone 4 will be positioned to insert the inside of parts to be processed 3 from the small end of parts to be processed 3 and with conical socket 225 match somebody with somebody Close, positioning tail bone 4 struts resilient prong 22 under the effect of lathe centre 5, makes the male cone (strobilus masculinus) 222 and to be processed zero of resilient prong 22 The inwall of part 3 is fitted close, while the inner face that parts to be processed 3 is held greatly can be under the tension force effect that resilient prong 22 is softened It is fitted close with the side wall 2211 of locating slot 221;
(4) rough turn part both ends of the surface, both ends inner circle and male cone (strobilus masculinus) 222;
(5) artificial aging, processing internal stress is reduced;
(6) half smart car part both ends of the surface, both ends inner circle and male cone (strobilus masculinus) 222;
(7) smart car part both ends of the surface, both ends inner circle and male cone (strobilus masculinus) 222.
Compared with prior art, the invention has the advantages that:
To coordinate 1. present invention employs the soft pawl 2 of flexible claw 22 and positioning tail bone 4, due to the elastic claw of soft pawl 2 The existing certain softness in portion 22 has appropriate elasticity again, can be opened naturally under the support of positioning tail bone 4 and with to be processed zero The inwall of part 3 is bonded realization and is fitted close naturally, and eliminating prior art needs continuous the defects of adjusting claw installation site, and one Secondary installation, it is automatic to coordinate.
2. positioning tail bone 4 supports the soft afterbody of pawl 2, top withstand to position tail bone 4 and promote positioning tail bone 4 to strut soft pawl 2 Enable soft pawl 2 to prop up the clamping method of part inwall, realize clamping device automatically with part inwall and the big end inner side of part Face positions.
3. supporting inwall by soft pawl 2, with reference to the self centering effect of lathe and the positioning of positioning tail bone 4, ensure that The part centre of gyration and machine tool chief axis are concentric after clamping so that in part process, can realize quick-clamping, automatic capturing zero The part centre of gyration, precision positioning is carried out, efficiency high, clamping deformation is small, and Dimension Measurement precision is high, uniform wall thickness, it is easier to Meet parts size precision requirement.
4. the soft profile taper of pawl 2 matches somebody with somebody car according to part taper, the soft medium position of pawl 2 is set according to cavity structure in specific part Vertical slot to make way 223 so that soft pawl 2 can be fully bonded with part inwall, increase contact area.
5. the soft afterbody of pawl 2 is provided with conical socket 225, coordinates with positioning tail bone 4, increase the soft tail support power of pawl 2, can be effective Prevent from beating when part from processing.
6. positioning tail bone 4 is stairstepping, front end is taper, soft with the soft precision-fit of 2 end cone groove of pawl 225, support Pawl 2, rear end are cylinder shape belt center hole 421, are easy to lathe centre 5 to position centering, position tail bone 4 and the soft end cone of pawl 2 is recessed Groove 225 is bonded, and supports soft pawl 2, and lathe centre 5 withstands tail bone, a folder, a top, carries out Rapid precision locating to part automatically.
As it will be easily appreciated by one skilled in the art that these are only presently preferred embodiments of the present invention, not limiting The present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., it should be included in this Within the protection domain of invention.

Claims (8)

  1. A kind of 1. processing unit (plant) of conical thin-wall case, it is characterised in that including:
    Chuck;
    Three soft pawls, are distributed in equilateral triangle, and are installed on chuck, the elastic claw that soft pawl includes base, is connected with base Portion, floor installation form locating slot on chuck between resilient prong and base;The cross section of resilient prong is sector, longitudinal With male cone (strobilus masculinus), the taper of male cone (strobilus masculinus) is consistent with parts to be processed inwall taper;The free end of resilient prong is provided with inner conical surface, and three The inner conical surface of individual resilient prong collectively constitutes conical socket;
    Tail bone is positioned, front end geometry is adapted to conical socket, and rear end offers center hole.
  2. A kind of 2. processing unit (plant) of conical thin-wall case as claimed in claim 1, it is characterised in that:The male cone (strobilus masculinus) of soft pawl offers The slot to make way of corresponding parts to be processed internal structure.
  3. A kind of 3. processing unit (plant) of conical thin-wall case as claimed in claim 1, it is characterised in that:Positioning tail bone is stairstepping structure Make, front end is conical nose, and rear end is cylindrical tail portion, and center hole is opened on the end face of cylindrical tail portion.
  4. A kind of 4. processing unit (plant) of conical thin-wall case as claimed in claim 1, it is characterised in that:Chuck is provided with raised peace Block is filled, screwed hole is offered on mounting blocks;Base offers the mounting groove of corresponding mounting blocks, and mounting groove offers corresponding screwed hole Through hole;Base is bolted with mounting blocks.
  5. 5. a kind of processing method of the conical thin-wall case of the processing unit (plant) based on claim 1, it is characterised in that including such as Lower step:
    (1) resilient prong of three soft pawls is loaded into parts to be processed from the big end of parts to be processed;
    (2) three soft pawls are installed on chuck, three soft pawls are distributed in equilateral triangle;
    (3) tail bone will be positioned to insert inside parts to be processed from the small end of parts to be processed and with conical socket coordinate, position tail Vertebra struts resilient prong under lathe centre effect, is fitted close the male cone (strobilus masculinus) of resilient prong and the inwall of parts to be processed, The side wall that the medial surface at the big end of parts to be processed can be with locating slot under the tension force effect that resilient prong is softened simultaneously is closely matched somebody with somebody Close;
    (4) turnery processing is started.
  6. A kind of 6. processing method of conical thin-wall case as claimed in claim 5, it is characterised in that:The male cone (strobilus masculinus) of soft pawl offers The slot to make way of corresponding parts to be processed internal structure.
  7. A kind of 7. processing method of conical thin-wall case as claimed in claim 5, it is characterised in that:Positioning tail bone is stairstepping structure Make, front end is conical nose, and rear end is cylindrical tail portion, and center hole is opened on the end face of cylindrical tail portion.
  8. A kind of 8. processing method of conical thin-wall case as claimed in claim 5, it is characterised in that:Chuck is provided with raised peace Block is filled, screwed hole is offered on mounting blocks;Base offers the mounting groove of corresponding mounting blocks, and mounting groove offers corresponding screwed hole Through hole;Base is bolted with mounting blocks.
CN201610481979.8A 2016-06-27 2016-06-27 A kind of processing unit (plant) and processing method of conical thin-wall case CN106112035B (en)

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Application Number Priority Date Filing Date Title
CN201610481979.8A CN106112035B (en) 2016-06-27 2016-06-27 A kind of processing unit (plant) and processing method of conical thin-wall case

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Application Number Priority Date Filing Date Title
CN201610481979.8A CN106112035B (en) 2016-06-27 2016-06-27 A kind of processing unit (plant) and processing method of conical thin-wall case

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CN106112035B true CN106112035B (en) 2018-04-03

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106903338B (en) * 2017-04-19 2018-08-28 中国航发北京航空材料研究院 A kind of fixture of processing thin-walled T shape bushings
CN107052384A (en) * 2017-06-05 2017-08-18 嘉兴新亚汽车零部件有限公司 A kind of major axis covers the inner clip frock of turning
CN108274304B (en) * 2018-03-30 2020-06-02 芜湖强振汽车紧固件有限公司 Automatic aligning device is used in eccentric bolt processing
CN109227054B (en) * 2018-11-02 2019-12-20 首都航天机械有限公司 Method for machining complex grid thin-wall shell
CN110142521A (en) * 2019-06-06 2019-08-20 王志嵩 The special-shaped radium-shine cutter device of handware
CN111036950A (en) * 2019-12-26 2020-04-21 陕西宝成航空仪表有限责任公司 Precision turning fixture for thin-wall conical part

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2071533A (en) * 1980-03-08 1981-09-23 Sharpe W F Chucks
CN100589925C (en) * 2008-05-23 2010-02-17 安东石油技术(集团)有限公司 Jig for machining coupling excircle and uses thereof
CN201833212U (en) * 2010-10-27 2011-05-18 福昌精密制品(深圳)有限公司 Three-jaw chuck for turning thin-wall tank-type parts
CN203184684U (en) * 2013-03-07 2013-09-11 连云港职业技术学院 Numerical control lathe fixture of thin-wall barrel-shaped workpiece
CN103286323B (en) * 2013-05-02 2015-06-24 中冶陕压重工设备有限公司 Method for processing long thin-walled sleeve parts by utilizing tyre-expansion type mandrel
CN103433765A (en) * 2013-08-20 2013-12-11 天津大学 Adjustable self-centering inner supporting device for machining thin-wall tubular part
CN203664731U (en) * 2013-11-25 2014-06-25 辽宁石油机械制造有限公司 Elastic expansion force core shaft for lathe

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