CN203672360U - Auxiliary tool for detecting cam angle of camshaft - Google Patents
Auxiliary tool for detecting cam angle of camshaft Download PDFInfo
- Publication number
- CN203672360U CN203672360U CN201420056112.4U CN201420056112U CN203672360U CN 203672360 U CN203672360 U CN 203672360U CN 201420056112 U CN201420056112 U CN 201420056112U CN 203672360 U CN203672360 U CN 203672360U
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- CN
- China
- Prior art keywords
- camshaft
- cam
- auxiliary tool
- reference pins
- angle
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- Expired - Fee Related
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Abstract
The utility model discloses an auxiliary tool for detecting cam angle of a camshaft. The auxiliary tool is used for detecting cam angle of the camshaft, the end surface of the camshaft is provided with positioning pin holes, the auxiliary tool comprises a body and a reference pin, wherein the body is provided with two opposite side surfaces, and the middle of the body is provided with a positioning hole matched with a journal of a cam to be detected; and the reference pin penetrates the body and is parallel to an axis of the positioning hole, two end parts of the reference pin respectively protrude from the two opposite side surfaces on the body, and the end parts are used for being matched with the positioning pin holes in the end surface. The auxiliary tool is simple and practical, can guarantee the detection precision and repeated precision, and can obtain more precise data by correcting system errors of the auxiliary tool.
Description
Technical field
The utility model relates to engine cam fields of measurement, particularly a kind of auxiliary mould that detects cam of camshaft angle.
Background technology
Camshaft is parts in piston engine, and its effect is to control the action of the opening and closing of valve.The angle of cam of engine camshaft directly and the piston of engine is movable forms relation with valve switch, this relation must guarantee by the accurate control of the cam angle degree of camshaft, simultaneously, camshaft and time gear also must correctly be installed, in the time that camshaft is installed, the end face pin (or keyway) of camshaft need to coordinate with time gear, and then drives the actuated by cams inlet and exhaust valve work on camshaft by time gear.
At present, use the camshaft of end face pin hole location, while detecting its angle, in end face pin hole, insert a pin, then, camshaft is installed on measuring machine, measuring machine drives camshaft to rotate, the side head contact cam of measuring machine carries out image data, can draw the cam angle of every grade of cam with respect to end face pin hole.But in little and very shallow situation, the pin of insertion can occur the very large error of perpendicularity with end face for camshaft end face pin hole, and built on the sand, cause that detection angles error is very large or data are unstable.So, when appearring in the angle of cam and pin (or keyway), difference can cause cylinder combustion incomplete, and piston is pinched, even the engine fault such as do not work.
Utility model content
The utility model is in order to overcome defect in above-mentioned prior art, and a kind of auxiliary mould that detects cam of camshaft angle is provided, and can guarantee accuracy of detection and repeatable accuracy.
For achieving the above object, the utility model provides a kind of auxiliary mould that detects cam of camshaft angle, it is for detection of the cam angle degree of camshaft, the end face of camshaft is provided with dowel hole, auxiliary mould comprises: body, it has two relative side, is provided with the pilot hole coordinating with the axle journal of cam to be detected in the middle of body; Reference pins, it is through body and parallel with the axis of pilot hole, and two ends of reference pins protrude from respectively the two relative side on body, and end is for coordinating with end face dowel hole.
In technique scheme, the shape of body is suitable with the cam face of camshaft to be detected, and the centre symmetry line of the bossing of body is through the center of reference pins and the center of pilot hole.
In technique scheme, reference pins and body interference fit.
Compared with prior art, the utlity model has following beneficial effect: this auxiliary mould is simple and practical, can guarantee accuracy of detection and repeatable accuracy, can obtain the modified value of frock by detecting twice detection of frock, can obtain more accurate data by the systematic error of revising auxiliary mould.
Accompanying drawing explanation
Fig. 1 is the front view of the auxiliary mould of detection cam of camshaft angle of the present utility model;
Fig. 2 is the auxiliary mould left view of detection cam of camshaft angle of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of embodiment.
The auxiliary mould of detection cam of camshaft angle of the present utility model is mainly for detection of the cam angle degree that is provided with the camshaft of dowel hole on the end face of camshaft, by be provided with the reference pins for measuring cam angle degree benchmark on frock body, make auxiliary lower the insert dowel hole of reference pins in this frock, guarantee the stable of measuring basis, and then guarantee the accurate of measurement data.
As shown in Figures 1 and 2, the auxiliary mould of the detection cam of camshaft angle that the present embodiment provides comprises body 1 and reference pins 2, body 1 has two relative side, is specially the first side 11 and the second side 12, is provided with the pilot hole 13 coordinating with the axle journal of cam to be detected in the middle of body 1.Reference pins 2 is through at body 1, and parallel with pilot hole 13 axis, reference pins 2 and body 1 interference fit, two ends of reference pins 2 protrude from respectively the two relative side on body 1, concrete, outstanding first side 11 of first end 21 of reference pins 2, the second end is given prominence to and the second side 12, and the end of reference pins 2 is for coordinating with dowel hole.It is suitable with the cam face of camshaft to be detected that the shape of this frock body is designed to, the centre symmetry line of the bossing of body 1 is through center and the pilot hole 13 center of reference pins 2, by reference pins 2 being arranged in the centre symmetry line of bossing of body 1 and through center and the pilot hole 13 center of reference pins 2, like this, the positional information of reference pins 2 be can determine by detecting the outer contour of body 1, and then this reference pins 2 and the angle that is installed to each grade of cam on camshaft determined.
In the time of concrete detection, this tooling sleeve is contained on the axle journal of camshaft to be detected, dowel hole on the end face of one of them end insertion camshaft of reference pins 2, then, measuring machine is determined the positional information of reference pins 2 by gathering the outer contour of body 1, every grade of cam of side head contact by measuring machine carries out data acquisition, can draw the angle of every grade of cam with respect to reference pins 2, like this, can indirectly draw dowel hole on the end face of camshaft and the angle of every grade of cam, and then detect its angle and whether meet theoretical requirement.
It should be noted that, the two sides of this frock can be installed on the axle journal of same camshaft to be detected carries out twice measurement, obtain the angle value of twice measurement, the half of the difference of the angle value of this twice measurement is exactly the modified value of this detection frock, like this, while needing more accurate data, can obtain by the systematic error of revising auxiliary detection frock.
Disclosed is above only specific embodiment of the utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.
Claims (3)
1. detect an auxiliary mould for cam of camshaft angle, it is for detection of the cam angle degree of camshaft, and the end face of described camshaft is provided with dowel hole, it is characterized in that, described auxiliary mould comprises:
Body, it has two relative side, is provided with the pilot hole coordinating with the axle journal of cam to be detected in the middle of described body;
Reference pins, it is through described body and parallel with the axis of described pilot hole, and two ends of described reference pins protrude from respectively the described two relative side on described body, and described end is for coordinating with described dowel hole.
2. the auxiliary mould of detection cam of camshaft angle according to claim 1, it is characterized in that, the shape of described body is suitable with the cam face of camshaft to be detected, and the centre symmetry line of the bossing of described body is through the center of described reference pins and the center of described pilot hole.
3. the auxiliary mould of detection cam of camshaft angle according to claim 1, is characterized in that, described reference pins and described body interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056112.4U CN203672360U (en) | 2014-01-29 | 2014-01-29 | Auxiliary tool for detecting cam angle of camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056112.4U CN203672360U (en) | 2014-01-29 | 2014-01-29 | Auxiliary tool for detecting cam angle of camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203672360U true CN203672360U (en) | 2014-06-25 |
Family
ID=50968646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056112.4U Expired - Fee Related CN203672360U (en) | 2014-01-29 | 2014-01-29 | Auxiliary tool for detecting cam angle of camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203672360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643434A (en) * | 2016-12-28 | 2017-05-10 | 重庆市银钢通科技有限公司 | Cam detection device |
-
2014
- 2014-01-29 CN CN201420056112.4U patent/CN203672360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643434A (en) * | 2016-12-28 | 2017-05-10 | 重庆市银钢通科技有限公司 | Cam detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20210129 |