CN107726956A - Engine cylinder cap valve guide hole and the detection method of camshaft hole distance - Google Patents
Engine cylinder cap valve guide hole and the detection method of camshaft hole distance Download PDFInfo
- Publication number
- CN107726956A CN107726956A CN201710863841.9A CN201710863841A CN107726956A CN 107726956 A CN107726956 A CN 107726956A CN 201710863841 A CN201710863841 A CN 201710863841A CN 107726956 A CN107726956 A CN 107726956A
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- measurement
- cubing
- hole
- valve guide
- mandrel
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Inventive engine cylinder cover valve guide pipe hole and the detection method of camshaft hole distance, are related to a kind of detection method, comprise the following steps：（One）Measurement cubing is made, it is equal with the aperture of camshaft hole that measurement cubing includes positioning base, measurement mandrel, go side cubing and not-go-end cubing, the external diameter for measuring mandrel；（Two）Cylinder head is positioned on positioning base, and measurement mandrel is positioned in each camshaft hole；（Three）The distance at mandrel edge is extremely measured with the detection of go side cubing and not-go-end cubing detection valve guide hole.The inventive method can accurately detect whether engine cylinder cap valve guide bushing and camshaft hole distance meet the requirements, this method is simple to operate, quick and precisely, it is practical and convenient.
Description
Technical field
The present invention relates to a kind of detection method, more particularly to a kind of engine cylinder cap valve guide hole and camshaft hole away from
From detection method.
Background technology
Engine cylinder cap is the important spare part on automobile, engine cylinder cap valve guide hole and camshaft hole center
Carpenters square cun is the critical size of cylinder head, once it is overproof, the assembling of cylinder head and the performance of engine certainly will be influenceed.In Fig. 1,
It is a kind of minicar engine cylinder head, cylinder cover valve guide pipe hole and camshaft hole centre-to-centre spacing 39.5 ± 0.05 are gas in figure
The critical size of cylinder cap, it has to be ensured that, because being bulk, it can not be detected using conventional method in production process.If
Detected with three coordinates, not only efficiency is low, inspects limited sample size by random samples, and Expenses of laboratory examination is high.
The content of the invention
The purpose of the present invention is in view of the above-mentioned drawbacks of the prior art, providing a kind of engine cylinder cap valve guide bushing
Hole and the detection method of camshaft hole distance, can accurately detect engine cylinder cap valve guide bushing and camshaft hole distance is
It is no to meet the requirements, this method is simple to operate, quick and precisely, it is practical and convenient.
The technical scheme that uses to achieve the above object of the present invention is：A kind of engine cylinder cap valve guide hole and cam
The detection method of axis hole distance, comprises the following steps：(1) measurement cubing is made, measurement cubing includes positioning base, the measurement heart
Axle, go side cubing and not-go-end cubing, it is equal with the aperture of camshaft hole to measure the external diameter of mandrel, go side cubing and not-go-end cubing point
Card body, locating shaft, measurement axle Bao Kuo not be measured, measurement card body is provided with two axis holes be arrangeding in parallel, locating shaft and measurement axle
It is respectively positioned in two axis holes of measurement card body, locating shaft and measures the axle external diameter of the axle lower end internal diameter with valve guide bushing respectively
Equal, the distance between valve guide hole and camshaft hole are A0, it is A to measure the distance between two axis holes on card body1, valve
The radius of guide hole is A2, the radius for measuring mandrel is A3, A1=A0+A2+A3, A1、A0、A2、A3Form a dimension chain, go side
The distance between cubing measurement two axis holes of card body are equal to A1Maximum limit of size, not-go-end cubing measurement card body two axis holes it
Between distance be equal to A1The minimum limit of size；(2) cylinder head is positioned on positioning base, and measurement mandrel is passed through together
All camshaft holes that one cylinder covers, and be positioned in each camshaft hole；(3) detected with go side cubing, by go side
The locating shaft of cubing is positioned in a valve guide hole, and the measurement card body of go side cubing is perpendicularly across in measurement mandrel
Side, whether can pass through measurement mandrel edge, can pass through and then be of the required size, otherwise chi if observing the measurement axle of go side cubing
It is very little undesirable, according to said method with all valve guide holes in go side cubing detection cylinder head；(4) detected with not-go-end cubing,
The locating shaft of not-go-end cubing is positioned in a valve guide hole, the measurement card body of not-go-end cubing is perpendicularly across the measurement heart
Whether on the upside of axle, measurement mandrel edge can be passed through by observing the measurement axle of not-go-end cubing, it is not possible to through being then of the required size,
Otherwise size is undesirable, has according to said method detected all valve guide holes in cylinder head with not-go-end cubing.
The present invention further technical scheme be：Being provided with the positioning base of the measurement cubing can positioning cylinder lid
The cylindrical positioning pins and diamond positioning pin in face, when cylinder head is positioned on positioning base in step (2), make cylinder head bottom
The mounting-positioning holes in face are engaged with cylindrical positioning pins and diamond positioning pin respectively.
The present invention further technical scheme be：The positioning base upper surface end positions of the measurement cubing are also associated with
A pair of bearings being oppositely arranged, bearing positioning hole is respectively equipped with two bearings, measurement mandrel is passed through into cam in step (2)
During axis hole, the both ends for measuring mandrel are respectively positioned in the bearing positioning hole of two bearings.
The present invention further technical scheme be：The locating shaft include be arranged on measurement card body axis hole in main part I,
One section, which is extended with, by the upper end of main part I is arranged in the prominent part of positioning boss I, by positioning with externally threaded fixed part I, the lower end of main part I
The lower end of boss I extends to form location division, and the external diameter of location division is identical with the aperture of valve guide hole.
The present invention further technical scheme be：The measurement axle includes the main part being arranged in measurement card body axis hole
IIth, by the upper end of main part II be extended with one section with externally threaded fixed part II, the lower end of main part II be arranged in the prominent part of positioning boss II,
Extended by the lower end of positioning boss II and form measurement portion, the external diameter of measurement portion is identical with the aperture of valve guide hole.
Inventive engine cylinder cover valve guide pipe hole and the detection method of camshaft hole distance have the advantages that：
The inventive method cylinder cover valve guide pipe hole as requested designs a set of go side cubing with camshaft hole distance and not-go-end is examined
Tool, detect whether cylinder cover valve guide pipe hole meets the requirements with camshaft hole distance using go side cubing and not-go-end cubing so that
Bulk between cylinder cover valve guide pipe hole and camshaft hole can be quickly completion measurement, make cylinder head detection tended to
It is kind, control cylinder head and enter factory's quality, while on the premise of applicability and accuracy is ensured, the measurement of the inventive method use
Cubing is cheap, easy to use, maintenance is simple, and checkability is high, and testing cost is greatly reduced.
With reference to the accompanying drawings and examples to the inspection of inventive engine cylinder cover valve guide pipe hole and camshaft hole distance
Survey method is further described.
Brief description of the drawings
Fig. 1 is a kind of structural representation of minicar engine cylinder head；
Fig. 2 is that the present invention uses the positioning base of measurement cubing and the combining structure schematic diagram of measurement mandrel；
Fig. 3 is the structural representation for the go-no go end cubing measurement card body that the present invention uses measurement cubing；
Fig. 4 is the structural representation for the go-no go end cubing measurement axle that the present invention uses measurement cubing；
Fig. 5 is the structural representation for the go-no go end cubing locating shaft that the present invention uses measurement cubing；
Fig. 6 is the structural representation for the go side cubing (or not-go-end cubing) that the present invention uses measurement cubing；
Fig. 7 is the sketch (only illustrating measurement mandrel and valve guide hole position) of present invention detection simulation；
Drawing reference numeral explanation：1- camshaft holes, 2- valve guide holes, 4- positioning bases, 5- cylindrical positioning pins, the positioning of 6- rhombuses
Pin, 7- bearings, 8- measurement mandrels, 9- measurement card bodies, 10- fixed parts I, 11- main parts I, 12- positioning boss I, 13- location divisions,
14- fixed parts II, 15- main parts II, 16- positioning boss II, 17- measurement portions.
Embodiment
As shown in Figures 2 to 7, a kind of engine cylinder cap valve guide hole of the present invention and the detection side of camshaft hole distance
Method, comprise the following steps：
(1) measurement cubing is made, measurement cubing includes positioning base, measurement mandrel, go side cubing and not-go-end cubing.Measurement inspection
Be provided with the positioning base of tool can positioning cylinder lid ground cylindrical positioning pins and diamond positioning pin, measure the positioning bottom of cubing
Seat upper surface end positions are also associated with a pair of bearings being oppositely arranged, and bearing positioning hole is respectively equipped with two bearings.Measure the heart
The external diameter of axle is equal with the aperture of camshaft hole, and go side cubing and not-go-end cubing include measurement card body, locating shaft, measurement respectively
Axle, measurement card body are provided with two axis holes be arrangeding in parallel, and locating shaft and measurement axle are respectively positioned at two axles of measurement card body
The axle external diameter of Kong Zhong, locating shaft and measurement axle lower end is equal with the internal diameter of valve guide bushing respectively, and wherein locating shaft includes being arranged on
Measure the main part I in card body axis hole, be extended with one section with externally threaded fixed part I, the lower end of main part I by the upper end of main part I
Positioning boss I is arranged in the prominent part of, is extended by the lower end of positioning boss I and forms location division, the external diameter of location division and the hole of valve guide hole
Footpath is identical.Measurement axle is outer including being arranged on the main part II measured in card body axis hole, one section of band being extended with by the upper end of main part II
The fixed part II of screw thread, the lower end of main part II be arranged in the prominent part of positioning boss II, is extended by the lower end of positioning boss II and forms measurement portion,
The external diameter of measurement portion is identical with the aperture of valve guide hole.The distance between valve guide hole and camshaft hole are A0, measurement card
The distance between two axis holes are A on body1, the radius of valve guide hole is A2, the radius for measuring mandrel is A3, A1=A0+A2+
A3, A1、A0、A2、A3Form a distance between dimension chain, go side cubing measurement two axis holes of card body and be equal to A1Greatest limit
The distance between size, not-go-end cubing measurement two axis holes of card body is equal to A1The minimum limit of size, go side cubing and not-go-end inspection
The outline of tool is identical, only A1Size differ.
Now A is solved by taking the 465Q Engine Series cylinder head of five water chestnuts as an example1Size, 465Q Engine Series cylinder head
Structure is as shown in figure 1, engine cylinder cap valve guide hole and camshaft hole centre-to-centre spacing A0=39.5 ± 0.05, valve guide hole
Size A3ForThe aperture of camshaft hole isTherefore the radius A of mandrel is measured2ForA1、A0、A2、
A3Form a dimension chain, it is known that：Closed-loop A0=39.5 ± 0.05, subtract ringSubtract ringAsk unknown
Increasing ring A1：
(1) the general formulae of Value Comparison Method is used, asks and increases ring A1Basic size, due to closed-loop basic size for each group cyclization
The algebraical sum (all increasing ring size sums, which subtract, all subtracts ring size sum) of basic size,
So 39.5=A1-(15+3.5) A1=39.5+1.5+15=58mm
(2) size A is sought2Limit deviation,
1. all subtract ring least limit because the greatest limit deviation of closed-loop is equal to all circumpolars limit deviation sums that most increase and subtracted
Deviation sum, i.e.,
A0Max=Σ sAimax- Σ xAimin
So A1max=39.55+ (3.5+15)=58.05mm
2. due to the least limit deviation of closed-loop be equal to it is all it is minimum increase ring limit deviation sums and subtract all subtract ring greatest limit
Deviation sum, i.e.,
A0Min=Σ sAi min- Σ xAimax
So A1min=39.45+ (3.5075+15.0025)=57.96mm
Wherein A0max、A0Min is respectively the maximum of closed-loop, the minimum limit of size；
SAimax, sAimin are respectively maximum, the minimum limit of size for increasing ring；
XAimax, xAimin are respectively maximum, the minimum limit of size for subtracting ring；
Therefore the distance between two axis holes A on made go side cubing measurement card body1For 58.05mm, not-go-end cubing measurement card
The distance between two axis holes A on body1For 57.96mm, go side cubing and not-go-end cubing are just produced by A1 two limiting values.
Also step tries to achieve A1 two limiting values to the engine cylinder cap of other models in this way.
(2) cylinder head is positioned on positioning base, and mandrel will be measured and owned through what same cylinder covered
Camshaft hole, and be positioned in each camshaft hole；When cylinder head is positioned on positioning base, determine the installation of cylinder head bottom surface
Position hole is engaged with cylindrical positioning pins and diamond positioning pin respectively.When measurement mandrel is passed through into camshaft hole, the two of mandrel is measured
End is respectively positioned in the bearing positioning hole of two bearings.
(3) detected, the locating shaft of go side cubing is positioned in a valve guide hole, go side with go side cubing
The measurement card body of cubing perpendicularly across measurement mandrel on the upside of, refer to shown in Fig. 7, whether the measurement axle for observing go side cubing can be with
Through measurement mandrel edge, it can pass through and then be of the required size, otherwise size is undesirable, according to said method with go side cubing
Detect all valve guide holes in cylinder head.
(4) detected, the locating shaft of not-go-end cubing is positioned in a valve guide hole, not-go-end with not-go-end cubing
The measurement card body of cubing perpendicularly across measurement mandrel on the upside of, refer to shown in Fig. 7, whether the measurement axle for observing not-go-end cubing can be with
Through measurement mandrel edge, it is not possible to which, through being then of the required size, otherwise size is undesirable, is according to said method examined with not-go-end
Tool has detected all valve guide holes in cylinder head.
After having inspected, measurement mandrel is removed outside camshaft hole, you can unload cylinder head from positioning base.
Above example is only presently preferred embodiments of the present invention, and structure of the invention is not limited to what above-described embodiment was enumerated
Form, any modification made within the spirit and principles of the invention, equivalent substitution etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (5)
1. a kind of engine cylinder cap valve guide hole and the detection method of camshaft hole distance, it is characterised in that including following
Step：（One）Measurement cubing is made, measurement cubing includes positioning base, measurement mandrel, go side cubing and not-go-end cubing, measurement
The external diameter of mandrel is equal with the aperture of camshaft hole, and go side cubing and not-go-end cubing include measurement card body, locating shaft, measurement respectively
Axle, measurement card body are provided with two axis holes be arrangeding in parallel, and locating shaft and measurement axle are respectively positioned at two axles of measurement card body
The axle external diameter of Kong Zhong, locating shaft and measurement axle lower end is equal with the internal diameter of valve guide bushing respectively, valve guide hole and camshaft hole
The distance between be A0, it is A to measure the distance between two axis holes on card body1, the radius of valve guide hole is A2, measure mandrel
Radius be A3, A1= A0+ A2+ A3, A1、A0、A2、A3A dimension chain is formed, go side cubing is measured between two axis holes of card body
Distance be equal to A1Maximum limit of size, not-go-end cubing measurement the distance between two axis holes of card body are equal to A1Least limit
Size；（Two）Cylinder head is positioned on positioning base, and will measurement mandrel cover through same cylinder it is all convex
Axle hole, and be positioned in each camshaft hole；（Three）Detected with go side cubing, the locating shaft of go side cubing is positioned in one
In individual valve guide hole, the measurement card body of go side cubing is perpendicularly across measurement mandrel upside, the measurement axle of observation go side cubing
It is no to pass through measurement mandrel edge, it can pass through and then be of the required size, otherwise size is undesirable, according to said method with logical
Hold all valve guide holes in cubing detection cylinder head；（Four）Detected with not-go-end cubing, the locating shaft of not-go-end cubing is positioned at
In one of valve guide hole, the measurement card body of not-go-end cubing observes the survey of not-go-end cubing perpendicularly across measurement mandrel upside
Measure whether axle can pass through measurement mandrel edge, it is not possible to which, through being then of the required size, otherwise size is undesirable, by this
Method has detected all valve guide holes in cylinder head with not-go-end cubing.
2. engine cylinder cap valve guide hole as claimed in claim 1 and the detection method of camshaft hole distance, its feature
Be, it is described measurement cubing positioning base on be provided with can positioning cylinder lid ground cylindrical positioning pins and diamond positioning pin,
In step（Two）It is middle when cylinder head is positioned on positioning base, the mounting-positioning holes of cylinder head bottom surface is positioned respectively with cylinder
Pin and diamond positioning pin are engaged.
3. engine cylinder cap valve guide hole as claimed in claim 1 and the detection method of camshaft hole distance, its feature
It is, the positioning base upper surface end positions of the measurement cubing are also associated with a pair of bearings being oppositely arranged, on two bearings
Bearing positioning hole is respectively equipped with, in step（Two）It is middle will measurement mandrel when pass through camshaft hole, measure the both ends of mandrel respectively calmly
Position is in the bearing positioning hole of two bearings.
4. engine cylinder cap valve guide hole as claimed in claim 1 and the detection method of camshaft hole distance, its feature
It is, the locating shaft is outer including being arranged on the main part I measured in card body axis hole, one section of band being extended with by the upper end of main part I
The fixed part I of screw thread, the lower end of main part I be arranged in the prominent part of positioning boss I, is extended by the lower end of positioning boss I and forms location division, positions
The external diameter in portion is identical with the aperture of valve guide hole.
5. engine cylinder cap valve guide hole as claimed in claim 1 and the detection method of camshaft hole distance, its feature
It is, the measurement axle is including being arranged on the main part II measured in card body axis hole, being extended with one section of band by the upper end of main part II
Externally threaded fixed part II, the lower end of main part II be arranged in the prominent part of positioning boss II, is extended by the lower end of positioning boss II and forms measurement
Portion, the external diameter of measurement portion are identical with the aperture of valve guide hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863841.9A CN107726956B (en) | 2017-09-22 | 2017-09-22 | Method for detecting distance between valve guide pipe hole and camshaft hole of engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863841.9A CN107726956B (en) | 2017-09-22 | 2017-09-22 | Method for detecting distance between valve guide pipe hole and camshaft hole of engine cylinder cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107726956A true CN107726956A (en) | 2018-02-23 |
| CN107726956B CN107726956B (en) | 2020-05-08 |
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ID=61207723
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710863841.9A Active CN107726956B (en) | 2017-09-22 | 2017-09-22 | Method for detecting distance between valve guide pipe hole and camshaft hole of engine cylinder cover |
Country Status (1)
| Country | Link |
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| CN (1) | CN107726956B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108413835A (en) * | 2018-06-12 | 2018-08-17 | 重庆文安机械有限公司 | A kind of cylinder cover valve valve line and cam hole centre distance cubing and detection method |
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| Publication number | Publication date |
|---|---|
| CN107726956B (en) | 2020-05-08 |
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