CN107398752B - Connecting rod process for machining method and Self-center-positioning mechanism used - Google Patents
Connecting rod process for machining method and Self-center-positioning mechanism used Download PDFInfo
- Publication number
- CN107398752B CN107398752B CN201710544677.5A CN201710544677A CN107398752B CN 107398752 B CN107398752 B CN 107398752B CN 201710544677 A CN201710544677 A CN 201710544677A CN 107398752 B CN107398752 B CN 107398752B
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- CN
- China
- Prior art keywords
- major part
- positioning
- microcephaly
- pin
- connecting rod
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The present invention relates to connecting rod process for machining method and Self-center-positioning mechanisms used comprising the mould body that is mounted on milling machine, the microcephaly for being vertically arranged in tire particularly and being installed in connecting rod small end hole pin are sleeved on that microcephaly sells lower end root and upper surface and microcephaly sell lower end surface to position small head gasket, the centre bore contacted parallel with microcephaly's pin and major part guide sleeve, the up and down major part guide post being arranged in major part guide sleeve centre bore, the major part inner hole taper pin for being mounted on major part guide post upper end by stud and being installed in crank pin end pore of tire particularly is arranged in；The present invention has rational design, compact-sized and easy to use.
Description
Technical field
The present invention relates to connecting rod process for machining method and Self-center-positioning mechanisms used.
Background technique
Connecting rod blank is when being transferred to machining because outer surface is forging surface, and rough forging tolerance is ± 0.5mm, and size dissipates
Difference is larger, it is necessary to mill out a positioning datum in machining side early period, currently used processing technology is using big
Capillus base side positions boring big end hole, and then the big end hole positioning milling major part side positioning surface good with boring, processes for rear process
One positioning datum.
The disadvantage of the method: because forging tolerance+when using major part black skin (side) as benchmark processing big end hole
0.5mm, be already contained in, in the first procedure just by crank pin end pore to the design of the concentricity of major part annulus 1mm's
Error.On connecting rod strength influence greatly, subsequent engine installation after very likely because connecting rod strength not enough caused by fail, occur
Serious safety accident.
Summary of the invention
The technical problems to be solved by the invention are generally speaking to provide a kind of connecting rod process for machining method and used
Self-center-positioning mechanism；The technical issues of solving in detail and acquirement beneficial effect in aftermentioned content and combine specific embodiment party
Content specifically describes in formula.The present invention can meet connecting rod for the blank Self-center-positioning mechanism in connecting rod positioning clamping tool
Concentricity requirement of the macropore to connecting rod annulus when roughing.By adjusting positioning process mode, make connecting rod in positioning process process
Middle macropore and big end hole annulus concentricity guarantee connecting rod strength with this, and reach product quality by changing process
Effectively promoted.
To solve the above problems, the technical solution used in the present invention is:
A kind of connecting rod machining Self-center-positioning mechanism used, including be mounted on milling machine mould body, be vertically arranged
It particularly and it is installed on the pin of the microcephaly in connecting rod small end hole, is sleeved on microcephaly in tire and sells lower end root and upper surface and under microcephaly sells
Small head gasket, the centre bore of end face positioning contact are parallel with microcephaly's pin and tire major part guide sleeve particularly, upper and lower work is arranged in
The dynamic major part guide post being arranged in major part guide sleeve centre bore is mounted on major part guide post upper end and the company of being installed on by stud
Major part inner hole taper pin in bar big end hole, is arranged in major part guide post the major part guide sleeve rear cover for being mounted on major part guide sleeve lower end
Jack-up spring under lower end between seam allowance and major part guide sleeve rear cover is arranged on major part guide sleeve upper surface and upper surface and company
The big head gasket and be located above big head gasket and positioned with crank pin end pore upper surface that the positioning of bar big end hole lower end surface contacts
The pressing plate of contact；
It is provided with guide key groove on major part guide sleeve centre bore inner sidewall, is provided with and is leading on major part guide post lateral wall
The feather key slided into keyway；Pressing plate is connect by bolt with mould body.
As a further improvement of the above technical scheme:
Microcephaly's pin is rhombus pin.
The idler wheel being in rolling contact with crank pin end pore inner wall is provided on major part inner hole taper pin outer cone wall.
Roller surface quenches HRC65-85.
Microcephaly's pin, small head gasket, big head gasket and major part inner hole taper pin realize six point locations to connecting rod；In mould body
On be provided with and sell the centering technical face parallel with major part inner hole taper pin central point line with microcephaly.
A kind of connecting rod process for machining method, comprising the following steps:
Step a: above-mentioned Self-center-positioning mechanism is installed on milling machine, by technical face centering；
Step b: firstly, the blank connecting rod deburring to forging, repairs seamed edge angle；Then, the macropore of the blank is pacified
On major part inner hole taper pin, the aperture of the blank is mounted on microcephaly's pin；Secondly, installation pressing plate, the blank it is small
Head bore lower end surface is contacted with the positioning of small head gasket upper surface, and the big end hole lower end surface of the blank and big head gasket upper surface position
Contact；
Step c: it by the basis of the central point of technical face and major part inner hole taper pin, programs or presses by drawing and is big apart from milling
Head side is major part positioning surface；Rib is repaired in deburring；
Step d: it is major part positioning surface as roughing standard using the major part positioning surface of step c, crosses；Then it is installed on boring machine
Bent plate, by scribing line centering, boring major part inner hole；Or using the major part positioning surface of step c be major part positioning surface as roughing standard, it draws
Line；Then installation clamping fixture and counterweight on vertical vehicle, by scribing line centering, turning major part inner hole.
The utility model has the advantages that thoroughly having been solved since novel link process for machining method and Self-center-positioning mechanism use used
Crank pin end pore and the big problem of annulus coaxiality error caused by having determined because of machining, current concentricity up to 0.3mm hereinafter,
Conscientiously it ensure that connecting rod product quality, improve safety coefficient for the operation of engine, certainly using such process and make by oneself
Engine damage accident caused by one cause macropore intensity difference did not occurred for position central authority.
Beneficial effects of the present invention description without being limited thereto, in order to preferably be easy to understand, specific embodiment part into
More detailed description is gone.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of connecting rod of the present invention.
Wherein: 1, mould body；2, little Tou Xiao；3, small head gasket；4, pressing plate；5, major part inner hole taper pin；6, stud；7,
Major part guide post；8, big head gasket；9, major part guide sleeve；10, major part guide sleeve rear cover；11, spring is jacked up；12, lower seam allowance；13,
Major part positioning surface；14, annulus.
Specific embodiment
As shown in Figs. 1-2, the connecting rod machining of the present embodiment Self-center-positioning mechanism used, including be mounted on milling machine
Mould body 1, be vertically arranged on mould body 1 and be installed in connecting rod small end hole microcephaly's pin 2, be sleeved on 2 lower end of microcephaly's pin
Small head gasket 3, the centre bore that root and upper surface are contacted with the positioning of 2 lower end surface of microcephaly's pin are parallel with microcephaly's pin 2 and are arranged in tire
Major part guide sleeve 9, the up and down major part guide post 7 being arranged in 9 centre bore of major part guide sleeve on specific 1 pass through double end spiral shell
Bolt 6 be mounted on 7 upper end of major part guide post and be installed in crank pin end pore major part inner hole taper pin 5, be mounted under major part guide sleeve 9
Jack-up under 7 lower end of major part guide post between seam allowance 12 and major part guide sleeve rear cover 10 is arranged in the major part guide sleeve rear cover 10 at end
Spring 11 is arranged on 9 upper surface of major part guide sleeve and upper surface and crank pin end pore lower end surface position the big head gasket contacted
8 and the pressing plate 4 that contacts is positioned above big head gasket 8 and with crank pin end pore upper surface；
It is provided with guide key groove on 9 centre bore inner sidewall of major part guide sleeve, is provided on 7 lateral wall of major part guide post
The feather key slided in guide key groove；Pressing plate 4 is connect by bolt with mould body 1.
Microcephaly's pin 2 is rhombus pin or taper rhombus pin, to realize auxiliary two-point locating.
The idler wheel being in rolling contact with crank pin end pore inner wall is provided on 5 outer cone wall of major part inner hole taper pin.
Roller surface quenches HRC65-85.
Microcephaly's pin 2, small head gasket 3, big head gasket 8 and major part inner hole taper pin 5 realize six point locations to connecting rod；In mould body
The centering technical face parallel with 5 central point line of major part inner hole taper pin with microcephaly's pin 2 is provided on 1.Rationally, technique is first for design
Into.
The connecting rod process for machining method of the present embodiment, comprising the following steps:
Step a: above-mentioned Self-center-positioning mechanism is installed on milling machine, by technical face centering；
Step b: firstly, the blank connecting rod deburring to forging, repairs seamed edge angle；Then, the macropore of the blank is pacified
On major part inner hole taper pin 5, the aperture of the blank is mounted on microcephaly's pin 2；Secondly, installation pressing plate 4, the blank
Small head bore lower end surface is contacted with the positioning of small 3 upper surface of head gasket, the big end hole lower end surface of the blank and big 8 upper surface of head gasket
Positioning contact；
Step c: it by the basis of the central point of technical face and major part inner hole taper pin 5, programs or is pressed apart from milling by drawing
Major part side is major part positioning surface 13；Rib is repaired in deburring；
Step d: it is major part positioning surface as roughing standard using the major part positioning surface of step c, crosses；Then in boring machine
Bent plate is installed, by scribing line centering, boring major part inner hole on TPX6113；Or make by major part positioning surface of the major part positioning surface of step c
For roughing standard, scribing line；Then installation clamping fixture and counterweight on vertical vehicle C516, by scribing line centering, turning major part inner hole.
The utility model has the advantages that
1. changing disadvantage existing for original process, using Self-center-positioning mechanism, using first in major part blank
Hole positioning, processes major part positioning surface, then carries out processing crank pin end pore using positioning surface, this mach process is ground
System, theoretically ensure that crank pin end pore to the coaxial of macropore annulus 14, improves the intensity of big end.
2. Self-center-positioning mechanism top is designed using idler wheel, to guarantee that connecting rod blank can be contacted accurately, while idler wheel
Using Surface hardening treatment, the service life of idler wheel is improved.
3. Self-center-positioning mechanism major part guide sleeve is positioned using keyway, to guarantee orientation angle and positioning accurate
Degree.
4. spring mechanism is designed in Self-center-positioning mechanism major part guide sleeve lower part, be because crank pin end pore forges tolerance ±
0.5mm, under the action of the spring, no matter forging that tolerance is much can effective positioning linkage rod center.
5. Self-center-positioning mechanism designs major part pressing plate, connecting rod is put into mechanism, because of spring-force driven dual, connecting rod two end face
It not being bonded with clamp body, connecting rod is pressed downward under the action of pressing plate, while utilizing guiding and positioning function positioning linkage rod major part center,
To reach the positioning of connecting rod end face, the effect at macropore Internal hole positioning center.
The present invention has rational design, it is low in cost, durable, safe and reliable, easy to operate, time saving and energy saving, save fund,
It is compact-sized and easy to use.
It is to disclose in order to more clear, and the prior art is just no longer enumerated that the present invention, which fully describes,.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；Make
It is obvious for being combined for those skilled in the art to multiple technical solutions of the invention.And these are modified or replace
It changes, the spirit and scope for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (4)
1. a kind of Self-center-positioning mechanism that connecting rod machining is used, it is characterised in that: including the mould body being mounted on milling machine
(1), it is vertically arranged on mould body (1) and is installed on the microcephaly in connecting rod small end hole and sell (2), be sleeved on microcephaly's pin (2) lower end
Root and upper surface and microcephaly sell that the small head gasket (3) that the positioning of (2) lower end surface contact, centre bore is parallel with microcephaly's pin (2) and sets
It sets in major part guide sleeve (9), the up and down major part guide post being arranged in major part guide sleeve (9) centre bore on mould body (1)
(7), the major part inner hole taper pin for being mounted on major part guide post (7) upper end by stud (6) and being installed in crank pin end pore
(5), it is mounted on the major part guide sleeve rear cover (10) of major part guide sleeve (9) lower end, seam allowance is set under major part guide post (7) lower end
(12) the jack-up spring (11) between major part guide sleeve rear cover (10), be arranged on major part guide sleeve (9) upper surface and upper end
The big head gasket (8) and be located at big head gasket (8) top and and big end that face is contacted with the positioning of crank pin end pore lower end surface
The pressing plate (4) of hole upper surface positioning contact；
It is provided with guide key groove on major part guide sleeve (9) centre bore inner sidewall, is provided on major part guide post (7) lateral wall
The feather key slided in guide key groove；Pressing plate (4) is connect by bolt with mould body (1)；
It is rhombus pin that microcephaly, which sells (2),；
The idler wheel being in rolling contact with crank pin end pore inner wall is provided on major part inner hole taper pin (5) outer cone wall.
2. connecting rod machining according to claim 1 Self-center-positioning mechanism used, it is characterised in that: roller surface
Quench HRC65-85.
3. connecting rod machining according to claim 1 Self-center-positioning mechanism used, it is characterised in that: microcephaly's pin
(2), small head gasket (3), big head gasket (8) and major part inner hole taper pin (5) are to six point location of connecting rod；It is arranged on mould body (1)
Have and sells (2) centering technical face parallel with major part inner hole taper pin (5) central point line with microcephaly.
4. a kind of connecting rod process for machining method, it is characterised in that: the following steps are included:
Step a: the described in any item Self-center-positioning mechanisms of claim 1-3 are installed on milling machine, by technical face centering；
Step b: firstly, the blank connecting rod deburring to forging, repairs seamed edge angle；Then, the macropore of the blank is mounted on
On major part inner hole taper pin (5), the aperture of the blank is mounted on microcephaly and is sold on (2)；Secondly, installation pressing plate (4), the blank
The positioning of small head bore lower end surface and small head gasket (3) upper surface contact, the big end hole lower end surface and big head gasket (8) of the blank
Upper surface positioning contact；
Step c: it by the basis of the central point of technical face and major part inner hole taper pin (5), by drawing or presses big apart from milling
Head side is major part positioning surface (13)；Rib is repaired in deburring；
Step d: it is major part positioning surface as benchmark using the major part positioning surface (13) of step c, crosses；Then it is installed on boring machine curved
Plate, by scribing line centering, boring major part inner hole；Or using the major part positioning surface of step c be major part positioning surface (13) as benchmark, it draws
Line；Then installation clamping fixture and counterweight on vertical vehicle, by scribing line centering, turning major part inner hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544677.5A CN107398752B (en) | 2017-07-06 | 2017-07-06 | Connecting rod process for machining method and Self-center-positioning mechanism used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544677.5A CN107398752B (en) | 2017-07-06 | 2017-07-06 | Connecting rod process for machining method and Self-center-positioning mechanism used |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107398752A CN107398752A (en) | 2017-11-28 |
| CN107398752B true CN107398752B (en) | 2019-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710544677.5A Active CN107398752B (en) | 2017-07-06 | 2017-07-06 | Connecting rod process for machining method and Self-center-positioning mechanism used |
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| CN (1) | CN107398752B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458826B (en) * | 2021-07-26 | 2022-08-02 | 常州机电职业技术学院 | Slotting machine fixture for slotting key groove of inner hole of automobile part bent arm |
| CN115365770A (en) * | 2022-09-19 | 2022-11-22 | 中船华南船舶机械有限公司 | Method for processing connecting rod head |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6644641B2 (en) * | 2002-02-06 | 2003-11-11 | Randy Phillips | Interchangeable locating pin assembly for locating manufactured parts |
| CN202846183U (en) * | 2012-08-20 | 2013-04-03 | 云南西仪工业股份有限公司 | Machining tool for connecting rod protruding platform surface and bolt hole |
| CN202780600U (en) * | 2012-09-26 | 2013-03-13 | 广西玉柴机器股份有限公司 | Manual floating locating pin |
| CN202910584U (en) * | 2012-10-06 | 2013-05-01 | 杭州九龙机械制造有限公司 | Automobile connecting rod outer circle clamp |
| CN203281905U (en) * | 2013-06-09 | 2013-11-13 | 重庆大江工业有限责任公司 | Jig for installing conical roller bearing outer rings of vehicle axle hub |
| CN103801952B (en) * | 2014-02-28 | 2016-03-09 | 洛阳东方动力机械有限公司 | A kind of hole machined positioning fixture |
| CN204658020U (en) * | 2015-02-16 | 2015-09-23 | 中信戴卡股份有限公司 | A kind of knuckle removes gate fixture |
| CN204565656U (en) * | 2015-04-03 | 2015-08-19 | 中国一拖集团有限公司 | A kind of workpiece blank positioner |
| CN204976130U (en) * | 2015-07-16 | 2016-01-20 | 天润曲轴股份有限公司 | Turning attachment of turning engine connecting rod |
| CN205437879U (en) * | 2015-12-31 | 2016-08-10 | 承德苏垦银河连杆股份有限公司 | Rod positioning face anchor clamps |
| CN205415011U (en) * | 2016-03-14 | 2016-08-03 | 中国人民解放军军事交通学院 | Milling fixture of bolt hole terminal surface of car connecting rod |
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| Publication number | Publication date |
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| CN107398752A (en) | 2017-11-28 |
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