CN105953709B - Automobile engine cylinder head valve guide bushing coaxiality check fixture and its detection method - Google Patents

Automobile engine cylinder head valve guide bushing coaxiality check fixture and its detection method Download PDF

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Publication number
CN105953709B
CN105953709B CN201610475256.7A CN201610475256A CN105953709B CN 105953709 B CN105953709 B CN 105953709B CN 201610475256 A CN201610475256 A CN 201610475256A CN 105953709 B CN105953709 B CN 105953709B
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detection
valve guide
cylinder head
engine cylinder
coaxiality
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CN105953709A (en
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张继东
王静平
索军利
寇文化
吴辉
祝翔
梁鹏
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Anhui Institute of Information Engineering
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Anhui Institute of Information Engineering
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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
    • G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
    • 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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Automatic Assembly (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Testing Of Engines (AREA)

Abstract

The invention discloses a kind of automobile engine cylinder head valve guide bushing coaxiality check fixture, including for being inserted into valve guide bushing the first test section and and the first test section connection and for detect the second test section between preset reference that engine cylinder covers with the presence or absence of deviation.Automobile engine cylinder head valve guide bushing coaxiality check fixture of the invention, structure is simple, it is easy to operate, it need to be only inserted into valve guide bushing when detection every time, if the concentricity of the valve guide hole on valve guide bushing and cylinder cap does not meet tolerance, which can quickly and easily be detected, relative to traditional detection method, not only detection accuracy is high, but also detection efficiency is also high.The present invention also provides a kind of detection methods of automobile engine cylinder head valve guide bushing concentricity.

Description

Automobile engine cylinder head valve guide bushing coaxiality check fixture and its detection method
Technical field
The invention belongs to cubing technical fields, specifically, the present invention relates to a kind of automobile engine cylinder head valve guide bushings Coaxiality check fixture and its detection method.
Background technique
Valve guide bushing is very important part in automobile engine cylinder head, its processing precision direct influence to engine Working performance and efficiency.If valve guide bushing position deviation occurs in processing or installation, in addition to nocuousness will be will lead to Heat transfer and guide hole wear quickly outer, also will cause the increase of fuel consumption.Therefore, to the machining accuracy of valve guide hole one As require very high, especially define very tight tolerance to the concentricity of valve guide hole and conduit outer wall, and this is coaxial The detection of degree is just particularly important.
Since automobile engine cylinder head valve guide hole is usually to tilt certain angle, this angle is coaxially spent in detection It has any problem in journey, and the application condition of traditional detection method detection is big, keeps actual erroneous detection situation relatively more, detects simultaneously Efficiency is not also high.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of vapour Car engine cylinder cap air valve catheter coaxiality check fixture and its detection method, it is therefore an objective to improve the accuracy of detection efficiency and detection.
To achieve the goals above, the technical scheme adopted by the invention is as follows: automobile engine cylinder head valve guide bushing concentricity Cubing is connect and for detection and engine cylinder including the first test section for being inserted into valve guide bushing and with the first test section It whether there is the second test section of deviation between the preset reference covered.
First test section includes detection bar, and the diameter of detection bar and the center-hole diameter of valve guide bushing are equal in magnitude.
First test section further includes the reinforcing rod connecting with the detection bar and second test section.
The reinforcing rod is coaxially connected with the detection bar.
The diameter of the reinforcing rod is greater than the diameter of the detection bar.
The length of the detection bar is greater than the length of the reinforcing rod.
Second test section has the valve retainer connecting with first test section and for covering with engine cylinder The bearing surface of contact and for detecting the detection faces that whether there is deviation between preset reference that engine cylinder covers, presets base Standard is the surface having between the axis of valve guide bushing less than 90 degree of angles that engine cylinder covers.
The detection faces are the circular conical surface coaxial with the detection bar, and the bearing surface is flat with the coaxial circle of detection faces Face.
Second test section is conical structure, and the detection faces are the second test section end surface, the bearing surface For another end surfaces of the second test section.
The present invention also provides a kind of automobile engine cylinder head valve guide bushing coaxiality detecting method, using above-mentioned cubing, When detection, the first test section of cubing is inserted into the centre bore of valve guide bushing, and make the second test section and engine cylinder cover On valve retainer contact, finally by between the second test section of observation and the preset reference that covers of engine cylinder with the presence or absence of inclined Difference, judges whether the concentricity of valve guide bushing and valve guide hole meets the requirements.
Automobile engine cylinder head valve guide bushing coaxiality check fixture of the invention, structure is simple, easy to operate, every time when detection It need to only be inserted into valve guide bushing, if the concentricity of valve guide bushing and the valve guide hole on cylinder cap does not meet tolerance and wants It asks, which can quickly and easily detected, and relative to traditional detection method, not only detection accuracy is high, Er Qiejian It is also high to survey efficiency；In addition, the detection method process using this cubing is simple, and it is easy to operate efficient, make the employee for detecting the product Even more without training the operation that can be on duty, and detection efficiency is high.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the structural schematic diagram of cubing of the present invention；
Fig. 2 is the usage state diagram of cubing of the present invention；
In the figure, it is marked as
1, valve retainer；2, cubing；201, detection bar；202, reinforcing rod；203, the second test section；204, detection faces； 205, bearing surface；206, hole is plugged；3, valve guide bushing；4, engine cylinder cover；5, preset reference.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution Solution, and facilitate its implementation.
As depicted in figs. 1 and 2, the present invention provides a kind of automobile engine cylinder head valve guide bushing coaxiality check fixtures, including The first test section for being inserted into valve guide bushing 3 and connect with the first test section and for detect covered with engine cylinder it is pre- If whether there is the second test section 203 of deviation between benchmark 5.
Specifically, as depicted in figs. 1 and 2, valve guide bushing 3 is to be mounted in the valve guide hole of engine cylinder cover and be The round tube of both ends open, inner hollow, the first test section include the detection bar 201 for being inserted into the centre bore of valve guide bushing, Detection bar 201 is long round bar, and the diameter of detection bar 201 and the center-hole diameter of valve guide bushing are equal in magnitude.
Preferably, as shown in Figure 1, the first test section further includes connecting with detection bar 201 and the second test section 203 One end of reinforcing rod 202, reinforcing rod 202 is fixedly connected with detection bar 201, and the other end is fixedly connected with the second test section 203.Add Strong bar 202 plays a part of to reinforce cubing rigidity, and reinforcing rod 202 is also round bar, and reinforcing rod 202 is coaxial fixed with detection bar 201 Connection, the diameter of reinforcing rod 202 and the diameter for being greater than detection bar 201, the length of detection bar 201 are greater than the length of reinforcing rod 202.
Preferably, as shown in Figure 1, the second test section 203 is the cone of umbrella, the second detection of conical structure Portion 203 has the bearing surface 205 for connecting with the first test section and being used to contact with the valve retainer 1 that engine cylinder covers and is used for It whether there is the detection faces 204 of deviation between the preset reference 5 that detection and engine cylinder cover.As shown in Fig. 2, valve guide hole To be obliquely installed inside engine cylinder cover, the axis of valve guide hole intersects with the bottom surface of engine cylinder cover and has between the two There is the angle less than 90 degree, preset reference 5 has between the axis of valve guide hole less than 90 degree for what engine cylinder covered The surface of angle, therefore can choose the bottom surface of engine cylinder cover as preset reference 5, the bottom surface of engine cylinder cover are and cylinder cap With cylinder body install when and cylinder body top surface pinch seal liner plane.
As shown in Figure 1, detection faces 204 are the end surface of the second test section 203, bearing surface 205 is the second test section 203 Another end surfaces, detection faces 204 be the circular conical surface coaxial with the first test section, bearing surface 205 be with detection faces 204 it is coaxial Disk.Detection faces 204 and bearing surface 205 and the reinforcing rod 202 and detection bar 201 of the first test section are coaxial, and bearing surface 205 It is fixedly connected with reinforcing rod 202, bearing surface 205 and reinforcing rod 202 are between detection faces 204 and detection bar 201.Second detection In portion 203, the end at 204 place of detection faces is the structure protruded towards outside, the overall diameter of detection faces 204 relative to the other end Equal in magnitude with the overall diameter of bearing surface 205, the vertical range between the center of circle of detection faces 204 and the center of circle of bearing surface 205 is big Vertical range between the edge of detection faces 204 and the edge of bearing surface 205.The buses of detection faces 204 and bearing surface 205 it Between angle and valve guide bushing and valve guide hole the satisfactory engine cylinder of the concentricity valve guide hole and hair that cover The sum of angle between the bottom surface of motivation cylinder cap is equal to 90 degree.When detecting, it is covered by observation detection faces 204 with engine cylinder Preset reference 5 between whether there is deviation, judge whether the concentricity of valve guide bushing and valve guide hole meets the requirements.
Preferably, plug hole 206 is second as shown in Figure 1, the second test section 203 is equipped with a plug hole 206 Start to extend to the threaded hole inside reinforcing rod along axial direction at the center of the detection faces of test section, which is to use In allowing screw rod to be inserted into, convenient for detection after testing staff cubing is extracted from valve guide bushing by screw rod.
The present invention also provides a kind of automobile engine cylinder head valve guide bushing coaxiality detecting methods, using the above structure Engine cylinder cover when detection, is horizontally arranged by cubing first, and makes the bottom surface of engine cylinder cover upward, then by the of cubing The detection bar 201 of one test section is inserted into the centre bore of valve guide bushing after passing through the valve retainer 1 that engine cylinder covers, until The bearing surface 205 of second test section 203 is contacted with the valve retainer 1 that engine cylinder covers, finally by observation detection faces 204 with Whether there is deviation between the preset reference 5 that engine cylinder covers, judge valve guide bushing and valve guide hole concentricity whether It meets the requirements.
As shown in Fig. 2, cubing is inclined, and engine cylinder cover is horizontal positioned after in cubing insertion valve guide bushing. When between the preset reference 5 that observation detection faces 204 and engine cylinder cover with the presence or absence of deviation, if having mother in detection faces 204 Line is in a horizontal state and the bottom surface of the bus and engine cylinder cover is in same plane, the bus in detection faces 204 and default base Standard 5 is just overlapped, then the concentricity of valve guide bushing and valve guide hole meets tolerance.If there is no bus in detection faces 204 It can be overlapped with preset reference 5, then it represents that the concentricity of valve and valve guide hole does not meet tolerance.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention Within.

Claims (6)

1.汽车发动机缸盖气门导管同轴度检具，其特征在于：包括用于插入气门导管中的第一检测部和与第一检测部连接且用于检测与发动机缸盖上的预设基准之间是否存在偏差的第二检测部；1. An automobile engine cylinder head valve guide coaxiality inspection tool is characterized in that: it comprises a first detection part for inserting into the valve guide and a preset reference connected with the first detection part and used for detection and the engine cylinder head whether there is a deviation between the second detection part; 所述第一检测部包括用于插入气门导管的中心孔中的检测杆和与检测杆为同轴连接的加强杆，检测杆的直径与气门导管的中心孔直径大小相等；加强杆的直径大于检测杆的直径，加强杆的一端与检测杆固定连接，另一端与第二检测部固定连接；The first detection part includes a detection rod for inserting into the central hole of the valve guide and a reinforcement rod coaxially connected with the detection rod, the diameter of the detection rod is equal to the diameter of the central hole of the valve guide; the diameter of the reinforcement rod is greater than The diameter of the detection rod, one end of the reinforcing rod is fixedly connected with the detection rod, and the other end is fixedly connected with the second detection part; 所述第二检测部具有与第一检测部连接且用于与发动机缸盖上的气门座圈接触的支承面和用于检测与发动机缸盖上的预设基准之间是否存在偏差的检测面，预设基准为发动机缸盖上的与气门导管的轴线之间具有小于90度夹角的表面；The second detection part has a bearing surface connected to the first detection part and used for contacting the valve seat ring on the engine cylinder head and a detection surface for detecting whether there is a deviation from a preset reference on the engine cylinder head , the preset reference is the surface on the engine cylinder head that has an included angle of less than 90 degrees with the axis of the valve guide; 所述第二检测部上设有一个用于让螺杆插入的插拔孔，插拔孔为第二检测部的检测面的中心处开始沿轴向一直延伸至加强杆内部的螺纹孔；The second detection part is provided with a plug-in hole for inserting the screw rod, and the plug-in hole is a threaded hole extending from the center of the detection surface of the second detection part to the inside of the reinforcing rod along the axial direction; 检测面为与检测杆同轴的圆锥面，支承面为与检测面同轴的圆平面；The detection surface is a conical surface coaxial with the detection rod, and the support surface is a circular plane coaxial with the detection surface; 在检测时，通过观察检测面与发动机缸盖上的预设基准之间是否存在偏差，判断气门导管与气门导管孔的同轴度是否符合要求；若检测面上有母线呈水平状态且该母线与发动机缸盖的底面处于同一平面，检测面上的母线与预设基准正好重合，则气门导管与气门导管孔的同轴度符合公差要求。During detection, by observing whether there is a deviation between the detection surface and the preset reference on the engine cylinder head, it is judged whether the coaxiality of the valve guide and the valve guide hole meets the requirements; If it is on the same plane as the bottom surface of the engine cylinder head, and the bus bar on the detection surface coincides with the preset reference, the coaxiality of the valve guide and the valve guide hole meets the tolerance requirements. 2.根据权利要求1所述的汽车发动机缸盖气门导管同轴度检具，其特征在于：所述检测杆的长度大于所述加强杆的长度。2 . The coaxiality inspection tool for a cylinder head valve guide of an automobile engine according to claim 1 , wherein the length of the detection rod is greater than the length of the reinforcement rod. 3 . 3.根据权利要求1所述的汽车发动机缸盖气门导管同轴度检具，其特征在于：所述第二检测部为圆锥形结构，所述检测面为第二检测部一端表面，所述支承面为第二检测部的另一端表面。3 . The coaxiality inspection tool for a cylinder head valve guide of an automobile engine according to claim 1 , wherein the second detection portion is a conical structure, the detection surface is an end surface of the second detection portion, and the The support surface is the other end surface of the second detection portion. 4.根据权利要求3所述的汽车发动机缸盖气门导管同轴度检具，其特征在于：所述检测面的外直径与支承面的外直径大小相等。4 . The coaxiality inspection tool for a valve guide of an automobile engine cylinder head according to claim 3 , wherein the outer diameter of the detection surface is equal to the outer diameter of the support surface. 5 . 5.根据权利要求3或4所述的汽车发动机缸盖气门导管同轴度检具，其特征在于：所述检测面的圆心与支承面的圆心之间的垂直距离大于检测面的边缘与支承面的边缘之间的垂直距离。5. The vehicle engine cylinder head valve guide coaxiality inspection tool according to claim 3 or 4, characterized in that: the vertical distance between the center of the detection surface and the center of the support surface is greater than the edge of the detection surface and the support The vertical distance between the edges of the faces. 6.车发动机缸盖气门导管同轴度检测方法，其特征在于：采用权利要求1至5任一所述的检具，检测时，将检具的第一检测部插入到气门导管的中心孔中，并使第二检测部与发动机缸盖上的气门座圈接触，最后通过观察第二检测部与发动机缸盖上的预设基准之间是否存在偏差，判断气门导管与气门导管孔的同轴度是否符合要求；6. A method for detecting the coaxiality of a valve guide of a cylinder head of a vehicle engine, characterized in that: using the inspection tool according to any one of claims 1 to 5, when detecting, inserting the first detection part of the inspection tool into the center hole of the valve guide , and make the second detection part contact the valve seat ring on the engine cylinder head, and finally by observing whether there is a deviation between the second detection part and the preset reference on the engine cylinder head, it is judged that the valve guide and the valve guide hole are the same. Whether the axis meets the requirements; 若检测面上有母线呈水平状态且该母线与发动机缸盖的底面处于同一平面，检测面上的母线与预设基准正好重合，则气门导管与气门导管孔的同轴度符合公差要求；若检测面上没有母线与预设基准能够重合，则表示气门与气门导管孔的同轴度不符合公差要求。If there is a bus bar on the detection surface that is horizontal and the bus bar is on the same plane as the bottom surface of the engine cylinder head, and the bus bar on the detection surface coincides with the preset reference, the coaxiality between the valve guide and the valve guide hole meets the tolerance requirements; if If there is no bus bar on the detection surface that can coincide with the preset reference, it means that the coaxiality of the valve and the valve guide hole does not meet the tolerance requirements.
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CN107009303B (en) * 2017-05-23 2019-03-29 核工业理化工程研究院 Concentricity adjusting device
CN110530245A (en) * 2019-09-19 2019-12-03 广西玉柴机器股份有限公司 A kind of cylinder cover guide pipe internal-external circle concentricity cubing and detection method

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CN205843581U (en) * 2016-06-25 2016-12-28 安徽工程大学机电学院 Automobile engine cylinder head valve guide bushing coaxiality check fixture

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US4030201A (en) * 1973-04-19 1977-06-21 Finike Italiana Marposs-Soc. In Accomandita Semplice Di Mario Possati & C. Method and relevant apparatus for detecting the geometrical features of mechanical workpieces, in particular for measuring the eccentricity and out-of-roundness
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