CN103949926B - Method for processing and positioning cam shaft hole - Google Patents
Method for processing and positioning cam shaft hole Download PDFInfo
- Publication number
- CN103949926B CN103949926B CN201410190199.9A CN201410190199A CN103949926B CN 103949926 B CN103949926 B CN 103949926B CN 201410190199 A CN201410190199 A CN 201410190199A CN 103949926 B CN103949926 B CN 103949926B
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- CN
- China
- Prior art keywords
- stud
- cylinder head
- camshaft
- screwed
- nut
- 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.)
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Classifications
-
- 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
- B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a method for processing and positioning a cam shaft hole. The method comprises the following steps: (1) studs are mounted in mounting screw holes of a cylinder cover and are tightened; (2) a cam shaft framework is mounted on the cylinder cover in a way of aligning with the studs, and a rubber hammer is used for tapping the cam shaft framework, so that the bonding surface of the cam shaft framework is attached to the bonding surface of the cylinder cover; (3) an auxiliary positioning element is provided according to a gap between a stud through hole of the cam shaft framework and the studs, the auxiliary positioning element is a positioning drum, the inner diameter of the positioning drum is matched with the outer diameter of each stud, the wall thickness of the positioning drum is matched with the gap, and the auxiliary positioning element is arranged in the studs near the two ends of the cylinder cover in a sleeving manner and is stuffed into the gap to position the cam shaft framework; (4) a nut is screwed in the stud located in the middle of the cylinder cover and is tightened; (5) the auxiliary positioning element is taken out, and the other nuts are screwed in the studs located at the two ends of the cylinder cover and are tightened. Through the adoption of the method, the assembly accuracy of the cam shaft hole can be improved, and the processing cost is reduced.
Description
Technical field
The present invention relates to field of machining, particularly to a kind of processing positioning method of camshaft hole.
Background technology
The camshaft hole of general diesel engine is to be collectively constituted by cylinder head and camshaft frame, general processing technique
For: first, heavy boring camshaft semicircle orifice in cylinder head and camshaft frame, then need for camshaft frame to be arranged on cylinder
Cover and carry out half right boring camshaft hole and right boring camshaft hole, finally on camshaft frame processing mounting hole of oil sprayer etc. other
Structure.
At present, in the processing of the camshaft hole of similar diesel engine, camshaft frame and cylinder head adopt stud to position
It is processed, and stud positioning easily produces gap, cause camshaft semicircle orifice in cylinder head and camshaft frame to not just,
Allowance is big, increases processing cost, or in the manner described above after machining cam axis hole, multiple with cylinder head in camshaft frame
When occur that camshaft hole assembly precision is not high, easily produce problem of misalignment etc., and, using stud positioning, phase can be increased
Like part category.
The information being disclosed in this background section is merely intended to increase the understanding of the general background to the present invention, and should not
Recognize when being considered or imply in any form that this information structure has been the prior art well known to persons skilled in the art.
Content of the invention
It is an object of the invention to provide a kind of processing positioning method of camshaft hole, by using manufacturing assembling alignment pin
Hole and auxiliary positioning part, can guarantee that cylinder head and camshaft frame are accurately positioned, the less surplus of camshaft hole polish, reduce and add
Work cost, improves camshaft hole assembly precision and quality stability.
For achieving the above object, the invention provides a kind of processing positioning method of camshaft hole, this camshaft hole is by gas
Cylinder cap and camshaft frame collectively constitute, and this processing positioning method comprises the steps: step 1, and stud is loaded cylinder head
Installation screw is interior and tightens；Step 2, camshaft frame is aligned stud and is contained in cylinder head, rap camshaft frame with rubber hammer
Frame makes the faying face of camshaft frame be affixed with the faying face of cylinder head；Step 3, the stud via according to camshaft frame and spiral shell
Gap between post provides a kind of auxiliary positioning part, and auxiliary positioning part is positioning cylinder, and the internal diameter of positioning cylinder is outer with stud
Footpath is adapted to, and positions wall thickness and the clearance fit of cylinder, between auxiliary positioning part is inserted in the stud near cylinder head two ends and fills in
Gap positions to camshaft frame；Step 4, nut is screwed in the stud positioned at cylinder head centre position and tightens；And step
Rapid 5, take out auxiliary positioning part, remaining nut is screwed in the stud positioned at cylinder head two ends and tightens.
Preferably, in step 1, by hand stud is screwed into the installation screw 2-3 tooth of cylinder head, with torque wrench by spiral shell
Post tightens.
Preferably, in step 4, by hand nut is screwed in the stud 2-3 tooth positioned at cylinder head centre position, uses and determine moment
Spanner is by nut tightening.
Preferably, with torque wrench according to order from top to bottom, from left to right by nut tightening.
Preferably, in step 5, by hand remaining nut is screwed in the stud 2-3 tooth positioned at cylinder head two ends, uses and determine moment
Spanner is by remaining nut tightening.
Preferably, with torque wrench according to order from top to bottom, from left to right by remaining nut tightening.
Preferably, nut includes the 1-12 nut in accompanying drawing 2, and tightens according to number order in accompanying drawing 2 successively.
Preferably, remaining nut includes the 13-20 nut in accompanying drawing 2, and successively according in number order in accompanying drawing 2
Tightly.
Compared with prior art, the invention has the following beneficial effects: aperture is crossed according to the stud of stud, camshaft frame
And camshaft hole right boring surplus design auxiliary positioning part, by auxiliary positioning part, camshaft frame is fixedly mounted in cylinder head
Carry out right boring camshaft hole, can guarantee that the less surplus of camshaft hole polish, reduce processing cost, it is to avoid more than dislocation no polish
Amount, improves camshaft hole assembly precision and quality stability.
Brief description
Fig. 1 is the flow chart of the processing positioning method of the camshaft hole according to the present invention；
Fig. 2 is that camshaft frame is just assemblied in cylinder head by the processing positioning method of the camshaft hole according to the present invention
View；
Fig. 3 is that camshaft frame is assemblied in cuing open in cylinder head by the processing positioning method of the camshaft hole according to the present invention
View；
Fig. 4 is the partial enlarged drawing in Fig. 3, illustrates the positioning schematic diagram of auxiliary positioning part；
Fig. 5 is the side view of the auxiliary positioning part used in processing positioning method according to the camshaft hole of the present invention.
Main Reference Numerals illustrate:
1- cylinder head, 2- camshaft frame, 3- stud, 4- nut, 5- auxiliary positioning part.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by specific embodiment.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " inclusion " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or ingredient, and do not exclude other units
Part or other ingredient.
As shown in figure 1, the processing positioning method of the camshaft hole according to the specific embodiment of the invention, this camshaft hole by
Cylinder head and camshaft frame collectively constitute, and this processing positioning method comprises the steps:
Step 101, stud 3 is loaded in the installation screw of cylinder head 1 and tightens (referring to Fig. 3)；
Step 102, camshaft frame 2 is aligned stud 3 and is contained in (referring to Fig. 3) in cylinder head 1, rap cam with rubber hammer
Axle framework 2 makes the faying face of camshaft frame 2 be affixed with the faying face of cylinder head；
Step 103, (in figure is not for the gap between the stud via (in figure is unmarked) according to camshaft frame 2 and stud 3
Labelling) a kind of auxiliary positioning part 5 (referring to Fig. 5) is provided, auxiliary positioning part 5 is positioning cylinder, positions internal diameter and the stud 3 of cylinder
External diameter adaptation, the positioning wall thickness of cylinder and clearance fit, auxiliary positioning part 5 is inserted in stud near cylinder head 1 two ends simultaneously
Fill in gap camshaft frame 2 is positioned, in the present embodiment, auxiliary positioning part 5 is specifically inserted in the spiral shell of 19 and No. 20 positions
Post (referring to Fig. 2)；
Step 104, nut 4 is screwed in the stud positioned at cylinder head centre position and tightens, and in the present embodiment, is specifically screwed in
The stud (referring to Fig. 2) of 1-12 position；And
Step 105, takes out auxiliary positioning part 5, remaining nut is screwed in the stud positioned at cylinder head 1 two ends and tightens, this
In embodiment, specifically it is screwed in the stud (referring to Fig. 2) of 13-20 position.
Wherein, in step 101, by hand stud 3 is screwed into the installation screw 2-3 tooth of cylinder head 1, will with torque wrench
Stud 3 tightens.In step 104, by hand nut 4 is screwed in the stud 2-3 tooth positioned at cylinder head 1 centre position, uses and determine moment
Spanner specifically according in figure 1-12 label order by nut tightening (referring to Fig. 2).In step 105, by hand by remaining nut
Be screwed in the stud 2-3 tooth positioned at cylinder head two ends, with torque wrench specifically according in figure 13-20 label order by remaining spiral shell
Mother tightens (referring to Fig. 2).
As shown in figure 5, auxiliary positioning part 5 crosses aperture and camshaft hole right boring according to the stud of stud 3, camshaft frame 2
Surplus design.
After in the manner described above camshaft frame 2 being fixed in cylinder head 1, hang on frock and cylinder head clamped fixation,
Carry out right boring camshaft hole, can guarantee that the less surplus of camshaft hole polish, reduce processing cost, it is to avoid more than dislocation no polish
Amount, improves Product Precision and quality stability.
The description of the aforementioned specific illustrative embodiment to the present invention illustrate that and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can much be changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles of the present invention and its reality should
With so that those skilled in the art be capable of and utilize the present invention various different exemplary and
Various different selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (5)
1. a kind of processing positioning method of camshaft hole, this camshaft hole is collectively constituted by cylinder head and camshaft frame, and it is special
Levy and be, this processing positioning method comprises the steps:
Step 1, stud is loaded in the installation screw of described cylinder head and tightens；
Step 2, described camshaft frame is aligned described stud and is contained in described cylinder head, rap described camshaft with rubber hammer
Framework makes the faying face of described camshaft frame and the faying face of described cylinder head be affixed；
Step 3, the gap between the stud via according to described camshaft frame and described stud provides a kind of auxiliary positioning part,
Described auxiliary positioning part is positioning cylinder, and the internal diameter of described positioning cylinder is adapted to the external diameter of described stud, described positioning cylinder
Wall thickness and described clearance fit, by described auxiliary positioning part be inserted in the stud near described cylinder head two ends and fill in described between
Gap positions to described camshaft frame；
Step 4, nut is screwed in the stud positioned at described cylinder head centre position and tightens；And
Step 5, takes out described auxiliary positioning part, remaining nut is screwed in the stud positioned at described cylinder head two ends and tightens.
2. the processing positioning method of camshaft hole according to claim 1 is it is characterised in that in described step 1, by hand
Described stud is screwed into the installation screw 2-3 tooth of described cylinder head, with torque wrench, described stud is tightened.
3. the processing positioning method of camshaft hole according to claim 1 is it is characterised in that in described step 4, by hand
Described nut is screwed in the stud 2-3 tooth positioned at described cylinder head centre position, with torque wrench by described nut tightening.
4. camshaft hole according to claim 3 processing positioning method it is characterised in that with torque wrench according to from
Top to bottm, order from left to right is by described nut tightening.
5. the processing positioning method of camshaft hole according to claim 4 is it is characterised in that in described step 5, by hand
Remaining nut is screwed in the stud 2-3 tooth positioned at described cylinder head two ends, with torque wrench by remaining described nut tightening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190199.9A CN103949926B (en) | 2014-05-07 | 2014-05-07 | Method for processing and positioning cam shaft hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190199.9A CN103949926B (en) | 2014-05-07 | 2014-05-07 | Method for processing and positioning cam shaft hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103949926A CN103949926A (en) | 2014-07-30 |
| CN103949926B true CN103949926B (en) | 2017-02-01 |
Family
ID=51327348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410190199.9A Active CN103949926B (en) | 2014-05-07 | 2014-05-07 | Method for processing and positioning cam shaft hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103949926B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011001878A (en) * | 2009-06-18 | 2011-01-06 | Jtekt Corp | Camshaft device, engine with the same, and method for manufacturing camshaft device |
| EP2489865A4 (en) * | 2009-10-13 | 2013-08-21 | Honda Motor Co Ltd | Cover member fastening method and fastening structure for a head cover |
| CN101749064B (en) * | 2009-12-29 | 2011-08-10 | 奇瑞汽车股份有限公司 | Camshaft bearing structure for engine |
| CN202851170U (en) * | 2012-10-25 | 2013-04-03 | 东风汽车公司 | Positioning structure for halve-typed motor cylinder body |
| CN203045354U (en) * | 2013-01-10 | 2013-07-10 | 哈尔滨飞机工业集团有限责任公司 | Part locating clamping structure |
| CN203547816U (en) * | 2013-10-30 | 2014-04-16 | 东风汽车公司 | Camshaft fixing support structure |
-
2014
- 2014-05-07 CN CN201410190199.9A patent/CN103949926B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103949926A (en) | 2014-07-30 |
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