CN103072068A - Positioning fixture for high-precision honing of inner hole of valve pocket - Google Patents

Positioning fixture for high-precision honing of inner hole of valve pocket Download PDF

Info

Publication number
CN103072068A
CN103072068A CN2011103294446A CN201110329444A CN103072068A CN 103072068 A CN103072068 A CN 103072068A CN 2011103294446 A CN2011103294446 A CN 2011103294446A CN 201110329444 A CN201110329444 A CN 201110329444A CN 103072068 A CN103072068 A CN 103072068A
Authority
CN
China
Prior art keywords
pair
valve pocket
positioning
clamp body
positioning sleeve
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN2011103294446A
Other languages
Chinese (zh)
Inventor
杨增辉
丁忠军
田丽君
徐迅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING EXPERIMENTAL PLANT
China Academy of Launch Vehicle Technology CALT
Original Assignee
BEIJING EXPERIMENTAL PLANT
China Academy of Launch Vehicle Technology CALT
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.)
Filing date
Publication date
Application filed by BEIJING EXPERIMENTAL PLANT, China Academy of Launch Vehicle Technology CALT filed Critical BEIJING EXPERIMENTAL PLANT
Priority to CN2011103294446A priority Critical patent/CN103072068A/en
Publication of CN103072068A publication Critical patent/CN103072068A/en
Pending legal-status Critical Current

Links

Images

Abstract

The invention relates to a positioning fixture for high-precision honing of the inner hole of a valve pocket. A positioning sleeve is sheathed outside a fixture body. The positioning sleeve is circumferentially and evenly provided with four through holes which extend along the radial direction. Four needle bearings are respectively fixed in the four through holes. A pair of fixture body pins are respectively inserted into two oppositely arranged needle bearings of the four needle bearings, stretch into the fixture body and are fixed with the fixture body. A pair of hand wheels are respectively inserted into a pair of stand columns and are fixed with the stand columns. A pair of positioning sleeve pins are respectively inserted into the pair of hand wheels, are fixed with the hand wheels and stretch into the other two oppositely arranged needle bearings of the four needle bearings. The bottom of the fixture body is fixedly connected with a positioning supporting plate. The pair of stand columns are fixedly arranged on a base. The positioning fixture additionally comprises a fastening screw and valve pocket positioning pins, wherein the fastening screw stretches into the fixture body, is fixed with the fixture body and is axially provided with through holes; and the valve pocket positioning pins are arranged in the through holes in a penetrating way. The positioning fixture has the advantages that the accurate positioning effect can be realized and the application scope is very wide.

Description

A kind of positioning fixture for the processing of valve pocket endoporus high-precision honing
Technical field
The present invention relates to a kind of positioning fixture for the processing of valve pocket endoporus high-precision honing, particularly relate to a kind of positioning fixture that is used for the processing of valve pocket endoporus high-precision honing of realizing locating accurately and having the very wide scope of application.
Background technology
The now processing of valve pocket endoporus roughly can divide following operation: 1, valve pocket bottom outlet processing, and adopt drill gun to beat the method for valve pocket bottom outlet and leave half essence, allowance for finish; 2, valve pocket bottom outlet semifinishing, the method that adopts reamer to ream improves cylindricity and the fineness in hole, for postorder fine finishining is prepared; 3, valve pocket heat treatment improves hardness; 4, valve pocket bottom outlet fine finishining, the method for employing grinding or the cutter formula honing of rising further improves the endoporus quality; 5, the fine finishining of valve pocket endoporus also is whole processing, also is to adopt by hand to repair the mode of grinding, and finally guarantees the endoporus cylindricity, the requirements such as fineness, and deburring.
The problem that the processing of valve pocket endoporus exists is mainly manifested in the hole and processes eventually, the cylindricity that namely adopts the cutter formula honing metapore that rises does not satisfy 0.0015 requirement between 0.003~0.005, for improving the form tolerance in hole, also need manual repairing to grind, Main Problems has:
1, repairing of hole ground precision and depended on processor's technical ability, and general senior worker the above persons once hand over the inspection qualification rate about 50%.
2, scatter greatly for the form and position tolerance of trimming hole causes the dimensional tolerance in hole, reach 0~0.03.
3, the end in hole, inefficiency was carried out in processing by craft.
Therefore needing badly provides a kind of novel positioning fixture that is used for the processing of valve pocket endoporus high-precision honing.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of positioning fixture that is used for the processing of valve pocket endoporus high-precision honing of realizing locating accurately and having the very wide scope of application.
For solving the problems of the technologies described above, a kind of positioning fixture for valve pocket endoporus high-precision honing processing of the present invention comprises that base, a column, a pair of positioning sleeve pin, a pair of clamp body pin, a pair of handwheel, positioning sleeve, four roll nail bearing, clamp body and location supporting plate; Positioning sleeve is placed in outside the clamp body, and positioning sleeve is along circumferentially evenly being provided with four open-works that radially extend, and four are rolled the nail bearing and are separately fixed among four open-works; A pair of clamp body pin inserts respectively four and rolls two that nail is oppositely arranged in the bearing and roll among the nail bearing, and stretches into clamp body and clamp body is fixed; A pair of handwheel inserts respectively a column and fixes with column, and a pair of positioning sleeve pin inserts respectively a pair of handwheel and fixes with handwheel, and stretches into four and roll that two of being oppositely arranged of another group roll among the nail bearing in the nail bearing; The clamp body bottom is fixedly connected with the location supporting plate; One column is fixed in base.
Also bag stretches into the trip bolt that is provided with vertically through hole that clamp body and clamp body are fixed, and is through at the valve pocket shop bolt among the through hole.
The present invention adopts and needs only when installing the setting element of workpiece by firm anchor clamps, and with clamp mechanism it is clamped, and just can guarantee rapidly and reliably that workpiece and cutter have correct position.
The positioning datum of valve pocket in anchor clamps is the valve pocket external cylindrical surface among the present invention, uses principle of six-point fixing, and part can be correctly, location accurately, and amount of floating is arranged.
For avoiding damaging machined surface, with positioning sleeve, location supporting plate and clamp body pin, limit respectively the rotation of circumferencial direction and movement vertically among the present invention.
Tool of the present invention is comprised of general basic spare and adjustable element, adds only need adjust or change clamp mechanism man-hour, and the valve pocket that just internally profile is intended mutually, dimensions is different is processed.Improved like this scope of application and the economy of special fixture in many kinds, small batch are produced.
Description of drawings
Fig. 1 is a kind of positioning fixture schematic diagram for the processing of valve pocket endoporus high-precision honing provided by the present invention.
Among the figure: 1 for valve pocket shop bolt, 14 for location supporting plate, 15 is screw for trip bolt, 13 for rolling nail bearing, 11 for clamp body pin, 12 for clamp body, 10 for holding screw, 9 for positioning sleeve, 8 for holding screw, 7 for holding screw, 6 for handwheel, 5 for positioning sleeve pin, 4 for column, 3 for base, 2.
The specific embodiment
The present invention is further detailed explanation below in conjunction with drawings and Examples.
The present invention includes base 1, a column 2, a pair of positioning sleeve pin 3, a pair of clamp body pin 11, a pair of handwheel 4, positioning sleeve 7, four and roll nail bearing 10, clamp body 9, location supporting plate 14, trip bolt 12 and valve pocket shop bolt 13.
Clamp body 9 bottoms are fixedly connected with by screw 15 with location supporting plate 14.Positioning sleeve 7 is along circumferentially evenly being provided with four open-works that radially extend, and four are rolled nail bearing 10 and compress into respectively among four open-works, fixing with positioning sleeve 7.Positioning sleeve 7 is placed in outside the clamp body 9, and a pair of clamp body pin 11 inserts respectively four and rolls two that nail is oppositely arranged in the bearing 10 and roll among the nail bearing 10, and stretches into clamp body 9, and is fixing with clamp body 9 by holding screw 8; A pair of handwheel 4 inserts respectively a column 2, and fixing with column 2 by holding screw 6, a pair of positioning sleeve pin 3 inserts respectively a pair of handwheel 4, fixing with handwheel 4 by holding screw 5, this a pair of positioning sleeve pin 3 stretches into four and rolls two that another group is oppositely arranged in the nail bearing 10 and roll among the nail bearing 10; One column 2 is fixed on the base 1 by screw.
Trip bolt 12 is provided with through hole vertically, and trip bolt 12 stretches into clamp body 9 and clamp body 9 and fixes by helicitic texture.Valve pocket shop bolt 13 is through among the through hole of trip bolt 12.
The course of work of the present invention is as follows:
The present invention is fastened on the platen with securing member, valve pocket is contained in 9 li of clamp bodies, generally load onto rear valve pocket and can exceed positioning sleeve 9, understand like this easy disassembly, then by trip bolt 12 and valve pocket shop bolt 13 location.Because take the mode of common fixture matrix during jig Design, so these anchor clamps have certain versatility.
The sizing plover mill machine generally adopts vertical structure, main shaft is by a plurality of cutter shaft rotations of gear driven, and rotary table can be settled a plurality of processing stations (general 4-6), fixes these anchor clamps on each station, according to machine tool structure, the clamping of valve pocket also is to adopt vertical clamping.Process is: cutter is after the sharpening finishing, cutter rotation and axial feed are by the endoporus of anchor clamps upper valve sleeve, this moment, thousands of tiny super hard abrasives in circumference and the length range cut simultaneously, a certain amount of workpiece material is cut, cutter stops the rotation after going to predeterminated position, straight line returns vertically, finishes processing.Because work piece holder is designed to and can guarantees that part is stressed lower in minimum at axial and radial floating, realizes accurately location.Part suffered clamping force in anchor clamps is difficult for causing the distortion in hole, utilizes himself condition to prevent that part from rotating.The selected abrasive grain of the cutter of different station is different, the allowance of removing is also different, it is multi-cutter process, for reaching high cylindricity, roughness, these several stations will carry out the machined parameters match test, generally finish the removal of initial surplus than the cutter of coarseness, more fine-grained cutter is finished desired surface roughness, realizes maximum efficient with this.
As: in the processing of valve pocket, surplus is 0.02, adopts the processing of 4 stations, and surplus is assigned as 0.009,0.006,0.003,0.002.

Claims (2)

1. positioning fixture that is used for the processing of valve pocket endoporus high-precision honing is characterized in that: comprise that base, a column, a pair of positioning sleeve pin, a pair of clamp body pin, a pair of handwheel, positioning sleeve, four roll nail bearing, clamp body and location supporting plate; Described positioning sleeve is placed in outside the described clamp body, and described positioning sleeve is along circumferentially evenly being provided with four open-works that radially extend, and described four are rolled the nail bearing and are separately fixed among four open-works; Described a pair of clamp body pin inserts respectively four and rolls two that nail is oppositely arranged in the bearing and roll among the nail bearing, and stretches into clamp body and clamp body is fixed; Described a pair of handwheel inserts respectively a column and fixes with column, and described a pair of positioning sleeve pin inserts respectively a pair of handwheel and fixes with handwheel, and stretches into four and roll that two of being oppositely arranged of another group roll among the nail bearing in the nail bearing; Described clamp body bottom is fixedly connected with the location supporting plate; A described column is fixed in base.
2. a kind of positioning fixture for valve pocket endoporus high-precision honing processing according to claim 1, it is characterized in that: also bag stretches into the trip bolt that is provided with vertically through hole that described clamp body and clamp body are fixed, and is through at the valve pocket shop bolt among the through hole.
CN2011103294446A 2011-10-26 2011-10-26 Positioning fixture for high-precision honing of inner hole of valve pocket Pending CN103072068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011103294446A CN103072068A (en) 2011-10-26 2011-10-26 Positioning fixture for high-precision honing of inner hole of valve pocket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103294446A CN103072068A (en) 2011-10-26 2011-10-26 Positioning fixture for high-precision honing of inner hole of valve pocket

Publications (1)

Publication Number Publication Date
CN103072068A true CN103072068A (en) 2013-05-01

Family

ID=48148870

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011103294446A Pending CN103072068A (en) 2011-10-26 2011-10-26 Positioning fixture for high-precision honing of inner hole of valve pocket

Country Status (1)

Country Link
CN (1) CN103072068A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308740A (en) * 2014-11-07 2015-01-28 南京市锅炉压力容器检验研究院 Grinding deviation preventing device for automatically grinding active safety valve seat by driving grinding head with motor
CN104400616A (en) * 2014-12-06 2015-03-11 苏州市诚品精密机械有限公司 Auxiliary fixture of thin-walled cylinder hone
CN105397595A (en) * 2015-12-18 2016-03-16 成都广屹实业发展有限公司 Grinding device for graduating valve seats on back faces of sliding valves
CN107457685A (en) * 2017-08-31 2017-12-12 黄进 A kind of rapid-assembling/disassembling honing fixture
CN112548599A (en) * 2020-11-27 2021-03-26 重庆智展齿轮传动有限公司 Method for accurately machining large-diameter porous workpiece

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010054223A1 (en) * 2000-06-23 2001-12-27 Fanuc Ltd. Workpiece changing system
CN2600213Y (en) * 2002-12-27 2004-01-21 宁夏回族自治区大河机床厂一厂 Elastic clamp for processing thin-wall cylinder
CN101176929A (en) * 2007-11-30 2008-05-14 上海诺玛液压系统有限公司 Clamp for machining through hole on valve housing of electro-hydraulic servo valve
CN101817151A (en) * 2009-02-27 2010-09-01 苏州信能精密机械有限公司 Cradle-type floating clamp
CN201776648U (en) * 2010-07-27 2011-03-30 安徽信发齿轮机械有限公司 Rotary jig for drilling 180-degree holes on circumference

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010054223A1 (en) * 2000-06-23 2001-12-27 Fanuc Ltd. Workpiece changing system
CN2600213Y (en) * 2002-12-27 2004-01-21 宁夏回族自治区大河机床厂一厂 Elastic clamp for processing thin-wall cylinder
CN101176929A (en) * 2007-11-30 2008-05-14 上海诺玛液压系统有限公司 Clamp for machining through hole on valve housing of electro-hydraulic servo valve
CN101817151A (en) * 2009-02-27 2010-09-01 苏州信能精密机械有限公司 Cradle-type floating clamp
CN201776648U (en) * 2010-07-27 2011-03-30 安徽信发齿轮机械有限公司 Rotary jig for drilling 180-degree holes on circumference

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308740A (en) * 2014-11-07 2015-01-28 南京市锅炉压力容器检验研究院 Grinding deviation preventing device for automatically grinding active safety valve seat by driving grinding head with motor
CN104400616A (en) * 2014-12-06 2015-03-11 苏州市诚品精密机械有限公司 Auxiliary fixture of thin-walled cylinder hone
CN105397595A (en) * 2015-12-18 2016-03-16 成都广屹实业发展有限公司 Grinding device for graduating valve seats on back faces of sliding valves
CN105397595B (en) * 2015-12-18 2018-01-30 成都广屹实业发展有限公司 A kind of lapping device for guiding valve back side restraining valve seat
CN107457685A (en) * 2017-08-31 2017-12-12 黄进 A kind of rapid-assembling/disassembling honing fixture
CN112548599A (en) * 2020-11-27 2021-03-26 重庆智展齿轮传动有限公司 Method for accurately machining large-diameter porous workpiece
CN112548599B (en) * 2020-11-27 2022-11-18 重庆智展齿轮传动有限公司 Method for accurately machining large-diameter porous workpiece

Similar Documents

Publication Publication Date Title
US9022837B2 (en) Honing machine for inner honing and outer honing
RU2470758C2 (en) Grinding multi-purpose machine and method of simultaneous grinding of crankshaft multiple journals
RU2303510C2 (en) Methods and apparatus for grinding main journals of crankshafts
CN103072068A (en) Positioning fixture for high-precision honing of inner hole of valve pocket
CN101918175B (en) Grinding center and method for simultaneous grinding of a plurality of bearings and end-side surfaces of crankshafts
RU2553165C2 (en) External circular grinding of crankshaft main and crank bearings and grinder to this end
US20120164926A1 (en) Grinding-supporting device
CN112757062B (en) Shaft part grinding and polishing device
CN103624642A (en) Machining method for grinding main journal of crankshaft in floating mode
US9238290B2 (en) Grindstone, grindstone manufacturing method, boring tool, abrasive grain positioning jig, and relief surface forming method
CN110153870A (en) A kind of TiC base steel bonded carbide end cap inner bore honing device and its Honing process method
EP1700670A2 (en) Super-abrasive machining tool and method of use
CN102601693A (en) Fixture for grinding eccentric inner bores
CN203062465U (en) Double-grinding-head vertical type disk grinding machine
US9643292B2 (en) Single and tandem honing devices
CN101722445A (en) Super-long inner hole grinding tool of revolved body
CN110877236A (en) Thrust bearing ring channel lapping processing method
CN103659519B (en) Utilize the grinding processing method of plain external grinding machine machining high-precision spherical outside surface
CN201500912U (en) Internal and external grinding integrated grinding machine
CN210147790U (en) Remanufacturing internal grinding machine
CN206273493U (en) A kind of axle centre-hole lapping machine
DE102009040060A1 (en) Method for super finishing of extent surfaces at circular work-pieces of hard steel, involves clamping hard circular work-piece from front side and driving hard circular work-piece during work-piece operation in rotary manner
CN108098516B (en) A kind of cylinder is top to grind tooling in machine maintenance
CN111185723A (en) Machining process capable of improving concentricity of inner circle and outer circle of rotor machining
WO2012053455A1 (en) Method for machining inner surface of cylinder and boring tool

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C05 Deemed withdrawal (patent law before 1993)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130501