CN108608324A - A kind of high-precision thin wall cylinder cover ground races and end face fixture - Google Patents
A kind of high-precision thin wall cylinder cover ground races and end face fixture Download PDFInfo
- Publication number
- CN108608324A CN108608324A CN201810461189.2A CN201810461189A CN108608324A CN 108608324 A CN108608324 A CN 108608324A CN 201810461189 A CN201810461189 A CN 201810461189A CN 108608324 A CN108608324 A CN 108608324A
- Authority
- CN
- China
- Prior art keywords
- tapered plug
- mandrel
- cylinder cover
- face
- thin wall
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of high-precision thin wall cylinder cover ground races and end face fixtures comprising：Mandrel (14), the first tapered plug (12) and the second tapered plug (13), mandrel (14) and the second tapered plug (13) penetrate cylinder cover inner hole from the top race end of cylinder jacket (1), second tapered plug (13) is set in mandrel (14), and the male cone (strobilus masculinus) of the second tapered plug (13) positions cylinder jacket (1)；The bottom race end of cylinder jacket (1), first tapered plug (12) is bored along the end of mandrel (14) to guide surface in mandrel (14), and male cone (strobilus masculinus) and the cylinder cover inner hole face of the first tapered plug (12) are steadily contacted.The advantages of present invention incorporates clearance fit fixture and blind-mate fixtures, feature are verified by processing, this fixture disclosure satisfy that the grinding accuracy requirement of certain model air cylinder sleeve of engine seat ring and end face, machining accuracy are stablized, and achieve good effect.
Description
Technical field
The invention belongs to technical field of mechanical processing, it is related to a kind of high-precision thin wall cylinder cover ground races and end face folder
Tool.
Background technology
Cylinder jacket is vehicle " heart " -- a vital part in engine, especially in certain model engine, to carry
The performance of high engine reduces size of engine, and Dimension of Saddle Ring precision and Geometrical Tolerance Principle are tighter, and the wall thickness of cylinder jacket becomes
It is thinner, it is also easy to produce clamping deformation.
Usual cylinder jacket ground races fixture has clearance fit fixture, such as：Central plug (grouping apolegamy), according in cylinder jacket
Pore size requirement, designs and manufactures the central plug of various outer diameter size, when processing apolegamy coordinate with the practical hole size of cylinder jacket
Central plug (2) appropriate, is positioned cylinder jacket using central plug outer diameter and Thrust Faces, by it is top before and after on lathe will
Central plug (there are center holes) and cylinder jacket are clamped on lathe；Blind-mate fixture, such as：Liquid plastic clamp, fixture is by several
Part forms hollow structure inside, and fixture connect with lathe, and liquefied plastic material is filled in cavity, using blanking cover and screw plug by cavity
Closing, screw plug tighten the liquid material in compaction cavum, and fixture thin-wall sleeve part swell, clamping cylinder set is made to carry out grinding and add
Work.
The defect that apolegamy processing is grouped with clearance fit clamp central plug is as follows：
1, the apolegamy of the gap of central plug and cylinder jacket is more difficult, and gap is also easy to produce greatly very much friction phenomenon, causes cylinder jacket seat ring
It beats to endoporus overproof, the too small handling in gap are inconvenient, are also easy to produce deformation, cause cylinder jacket seat ring to beat endoporus overproof.
2, since there are the trueness error of central plug and cylinder cover inner hole position gap and central plug center hole, two central plugs
Center hole will produce not coaxial phenomenon, cause cylinder jacket seat ring, end face to endoporus beat it is overproof.
Schematic diagram is as shown in Figure 1.Wherein, 1- cylinder jacket, 2- central plugs, 3- top races, 4- bottom races, the centers 5- are stifled, the ends 6-
Face.
The defect processed with blind-mate Liquid plastic clamp is as follows：
1, clamp mode is radial clamping, is also easy to produce deformation, manufacture difficulty is big, especially the essence of cavity thin-walled portion
Degree, will have a direct impact on the required precision of cylinder jacket seat ring and end face.
2, liquefied plastic material concentration is affected by temperature larger, and there are aging, failure phenomenons, and the size of clamping force is caused to be not easy
Control, and it is unstable, influence the stability of cylinder jacket seat ring and end face machining accuracy.
3, leakage phenomenon can be gradually generated during use, causes cylinder jacket not clamping, not with fixture synchronous rotary, makes gas
Cylinder sleeve seat ring generates rib degree, causes waste product, and grinding efficiency is low.
4, liquefied plastic material needs heating and melting to obtain, and ratio is not easy to control, and can cause environmental pollution.
Schematic diagram is as shown in Figure 2.Wherein, 1- cylinder jacket, 3- top races, 4- bottom races, the end faces 6-, thin-wall sleeve before 7-, after 8-
Thin-wall sleeve, 9- clamp bodies, 10- blanking covers, the end faces 11-.
Invention content
(1) goal of the invention
The purpose of the present invention is：A kind of high-precision thin wall cylinder cover ground races and end face fixture are provided, using pacifying
Entirely, in the case of easy to loading and unloading, ensure machining accuracy and the processing of certain model High Precision for Engine thin wall cylinder cover seat ring and end face
Stability requirement.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of high-precision thin wall cylinder cover ground races and end face to press from both sides
Tool comprising：Mandrel 14, the first tapered plug 12 and the second tapered plug 13, mandrel 14 and the second tapered plug 13 are from the top race end of cylinder jacket 1
Cylinder cover inner hole is penetrated, the second tapered plug 13 is set in mandrel 14, and the male cone (strobilus masculinus) of the second tapered plug 13 positions cylinder jacket 1；Cylinder
The bottom race end of set 1, the first tapered plug 12 is bored along the end of mandrel 14 to guide surface in mandrel 14, outside the first tapered plug 12
The conical surface is steadily contacted with cylinder cover inner hole face.
Wherein, second tapered plug 13 and 14 elastic conjunction of mandrel are integrally formed, and the mandrel 14 and the first tapered plug 12 are slided
Dynamic cooperation.
Wherein, the conical surface of second tapered plug 13, the conical surface of the first tapered plug 12 and mandrel 14 and the sliding of the first tapered plug 12 are matched
Conjunction face is coaxial.
Wherein, first tapered plug 12 and mandrel 14 are slidably matched gap in 0.003mm.
Wherein, the taper of first tapered plug, 12 and second tapered plug 13 is 1:500.
Wherein, ring-shaped step hole is processed respectively in first tapered plug, 12 and second tapered plug 13.
Wherein, after first tapered plug, 12 and second tapered plug 13 is assemblied in mandrel 14, the jump of the centre bore 15 of center roller 14
It is dynamic to be not more than 0.005mm.
(3) advantageous effect
The high-precision thin wall cylinder cover ground races and end face fixture that above-mentioned technical proposal is provided, combine gap and match
The advantages of co-clip tool and blind-mate fixture, feature, are verified by processing, this fixture disclosure satisfy that certain model cylinder
The grinding accuracy requirement of seat ring and end face is covered, machining accuracy is stablized, and good effect is achieved.
Description of the drawings
Fig. 1 is the structural schematic diagram of clearance fit fixture in the prior art.
Fig. 2 is the structural schematic diagram of blind-mate Liquid plastic clamp in the prior art.
Fig. 3 is the structural schematic diagram of fixture of the embodiment of the present invention.
In Fig. 3,1- cylinder jacket, 3- top races, 4- bottom races, the end faces 6-, the first tapered plugs of 12-, the second tapered plugs of 13-, the 14- hearts
Axis, 15- centre bores, 16- mandrel guide surfaces, 17- are slidably matched face.
Specific implementation mode
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the tool of the present invention
Body embodiment is described in further detail.
Certain model cylinder sleeve wall thickness thinnest part thickness is 4mm, and IT6 grades of Dimension of Saddle Ring precision, seat ring is to endoporus jump
Dynamic to require to be 0.02mm, it is 5.5mm that seat ring part thickness is most thin.For requirements above, to reduce clamping deformation, ensure that seat ring is jumped
Dynamic to require, in summary two kinds of fixture advantage and disadvantage, final to determine that fixture is designed as axial grip, blind-mate formula structure.
The present embodiment fixture schematic diagram is as shown in Figure 3.Fixture includes mandrel 14, the first tapered plug 12 and the second tapered plug 13, and second
Tapered plug 13 and 14 elastic conjunction of mandrel are integrally formed, with 14 both ends centre bore position benchmark of mandrel be ground the second tapered plug 13 the conical surface and
Mandrel 14 and the first tapered plug 12 are slidably matched face, ensure the concentricity of the conical surface and the face that is slidably matched；First tapered plug 12 and mandrel 14
It is slidably matched, the gap that is slidably matched is ensureing that 12 easy slide of the first tapered plug is as small as possible, and the control of this fixture exists
In 0.003mm；The taper of first tapered plug 12 and the second tapered plug 13 should both ensure accurate positioning, facilitated dress again in suitable range
Cylinder jacket is unloaded, by experiment, the taper of the present embodiment the first tapered plug 12 and the second tapered plug 13 is set as 1:500；First tapered plug 12
Ring-shaped step hole is processed respectively in the second tapered plug 13, as shown in the figureWithHole, to mitigate the weight of fixture；Two
After tapered plug is assemblied in mandrel 14, the bounce of the centre bore 15 of center roller 14 is not more than 0.005mm.
Steps are as follows for fixture operation：
1,1 traverse of cylinder jacket (shown position) penetrates mandrel 14 and the second tapered plug 13 from 3 end of top race of cylinder jacket 1
Cylinder cover inner hole is positioned cylinder jacket using the conical surface of the second tapered plug 13；
2, at 4 end of bottom race of cylinder jacket 1, by the first tapered plug 12 along mandrel guide surface 16 in mandrel 14, hand is light
Touch it is dynamic, until the conical surface and the cylinder cover inner hole face of the first tapered plug 12 are steadily contacted；
3, top hold out against of two on the fixture grinding machine for installing cylinder jacket 1 (is withstood on into mandrel both ends center hole namely center
Hole 15), then start to process；
4, after processing is completed, cylinder jacket 1 and fixture are unloaded, the first tapered plug 12 is first taken out, further takes out the cone of mandrel 14 and second
Plug 13, preparation are processed next time.
As can be seen from the above technical solutions, this fixture decomposes positioning, clamping direction by the tapered plug for being suitble to taper
Axially and radially both direction, positioning, clamping are more rationally reliable for cylinder jacket.
To sum up, key point of the invention has the following：
1, by experiment, the tapered plug of suitable taper is devised, accurate positioning but also facilitates handling when not only ensure that clamping, and
Positioning, clamping direction are decomposed in cylinder jacket axially and radially both direction, make positioning, clamp it is more rationally reliable.
2, the first tapered plug 12 and mandrel glade plane space are controlled, ensures that positioning accuracy and handling are flexible.
3, the first tapered plug 12, the bounce precision of the second tapered plug 13 and center roller center hole to be controlled.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of high-precision thin wall cylinder cover ground races and end face fixture, which is characterized in that including：Mandrel (14), first
Tapered plug (12) and the second tapered plug (13), mandrel (14) and the second tapered plug (13) penetrate cylinder jacket from the top race end of cylinder jacket (1)
Endoporus, the second tapered plug (13) are set in mandrel (14), and the male cone (strobilus masculinus) of the second tapered plug (13) positions cylinder jacket (1)；Cylinder jacket
(1) bottom race end, the first tapered plug (12) are bored along the end of mandrel (14) to guide surface in mandrel (14), the first tapered plug
(12) male cone (strobilus masculinus) is steadily contacted with cylinder cover inner hole face.
2. high-precision thin wall cylinder cover ground races as described in claim 1 and end face fixture, which is characterized in that described
Two tapered plugs (13) and mandrel (14) elastic conjunction are integrally formed, and the mandrel (14) and the first tapered plug (12) are slidably matched.
3. high-precision thin wall cylinder cover ground races as claimed in claim 2 and end face fixture, which is characterized in that described
The conical surface of two tapered plugs (13), the conical surface of the first tapered plug (12) and mandrel (14) and the first tapered plug (12) face that is slidably matched are coaxial.
4. high-precision thin wall cylinder cover ground races as claimed in claim 2 and end face fixture, which is characterized in that described
One tapered plug (12) and mandrel (14) are slidably matched gap in 0.003mm.
5. high-precision thin wall cylinder cover ground races as described in claim 1 and end face fixture, which is characterized in that described
The taper of one tapered plug (12) and the second tapered plug (13) is 1:500.
6. high-precision thin wall cylinder cover ground races as described in claim 1 and end face fixture, which is characterized in that described
Ring-shaped step hole is processed respectively in one tapered plug (12) and the second tapered plug (13).
7. high-precision thin wall cylinder cover ground races as described in claim 1 and end face fixture, which is characterized in that described
After one tapered plug (12) and the second tapered plug (13) are assemblied in mandrel (14), the bounce of the centre bore (15) of center roller (14) is not more than
0.005mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461189.2A CN108608324A (en) | 2018-05-15 | 2018-05-15 | A kind of high-precision thin wall cylinder cover ground races and end face fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461189.2A CN108608324A (en) | 2018-05-15 | 2018-05-15 | A kind of high-precision thin wall cylinder cover ground races and end face fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108608324A true CN108608324A (en) | 2018-10-02 |
Family
ID=63663288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810461189.2A Pending CN108608324A (en) | 2018-05-15 | 2018-05-15 | A kind of high-precision thin wall cylinder cover ground races and end face fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108608324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025356A (en) * | 2020-08-29 | 2020-12-04 | 中国航发南方工业有限公司 | Device for machining thin-wall through hole parts |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005059182A (en) * | 2003-08-19 | 2005-03-10 | Honda Motor Co Ltd | Holding jig for grinding outer surface of cylindrical work |
| CN201143635Y (en) * | 2008-01-18 | 2008-11-05 | 上海东方泵业(集团)有限公司 | Sleeve barrel grinding jigs |
| CN201559077U (en) * | 2009-09-24 | 2010-08-25 | 洛阳百成内燃机配件有限公司 | Device capable of simultaneously processing outer circle and two end surfaces of cylinder sleeve blank |
| CN205571453U (en) * | 2016-03-14 | 2016-09-14 | 东方电气集团东方汽轮机有限公司 | Anchor clamps for sleeve like parts machining |
| CN205915199U (en) * | 2016-06-16 | 2017-02-01 | 宝鸡石油机械有限责任公司 | Thin wall spacer grinds uses device |
-
2018
- 2018-05-15 CN CN201810461189.2A patent/CN108608324A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005059182A (en) * | 2003-08-19 | 2005-03-10 | Honda Motor Co Ltd | Holding jig for grinding outer surface of cylindrical work |
| CN201143635Y (en) * | 2008-01-18 | 2008-11-05 | 上海东方泵业(集团)有限公司 | Sleeve barrel grinding jigs |
| CN201559077U (en) * | 2009-09-24 | 2010-08-25 | 洛阳百成内燃机配件有限公司 | Device capable of simultaneously processing outer circle and two end surfaces of cylinder sleeve blank |
| CN205571453U (en) * | 2016-03-14 | 2016-09-14 | 东方电气集团东方汽轮机有限公司 | Anchor clamps for sleeve like parts machining |
| CN205915199U (en) * | 2016-06-16 | 2017-02-01 | 宝鸡石油机械有限责任公司 | Thin wall spacer grinds uses device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025356A (en) * | 2020-08-29 | 2020-12-04 | 中国航发南方工业有限公司 | Device for machining thin-wall through hole parts |
| CN112025356B (en) * | 2020-08-29 | 2022-06-07 | 中国航发南方工业有限公司 | Device for machining thin-wall through hole parts |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181002 |