CN104440755A - Error-proofing device - Google Patents
Error-proofing device Download PDFInfo
- Publication number
- CN104440755A CN104440755A CN201410743395.4A CN201410743395A CN104440755A CN 104440755 A CN104440755 A CN 104440755A CN 201410743395 A CN201410743395 A CN 201410743395A CN 104440755 A CN104440755 A CN 104440755A
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- CN
- China
- Prior art keywords
- prevention device
- error prevention
- error
- cam
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses an error-proofing device which comprises a first error-proofing device body and a second error-proofing device body. The first error-proofing device body is used for detecting whether a cam is an admission cam or not, and the second error-proofing device body is used for detecting whether a cam is an exhaust cam or not; both the first and second error-proofing device bodies are cylinders, a spindle hole used for the spindle of the cam to insert and an error-proofing hole used for an error-proofing pin to insert are arranged in the center of each cylinder, a positioning hole used for the positioning pin to insert and matched with a vent of the admission cam is further arranged in the first error-proofing device body, and a positioning hole used for the positioning pin to insert and matched with a vent of the exhaust cam is arranged in the second error-proofing device body; the spindle hole of the first error-proofing device body is identical to that of the second error-proofing device body in diameter; the error-proofing hole of the first error-proofing hole is identical to that of the second error-proofing device body in diameter; the positioning hole of the first error-proofing device body is identical to that of the second error-proofing device body in diameter. By the error-proofing device, the cam can be effectively judged out to be the admission cam or the exhaust cam.
Description
Technical field
The present invention relates to mechanical engineering technical field, particularly a kind of error prevention device.
Background technology
Along with the fast development of China's economic construction, market increases day by day for various types of demand misplacing device.
We know, for cam product, generally can be divided into admission cam and exhaust cam; The end face of admission cam and exhaust cam has passage, and these two kinds of cams are only that there is difference slightly the position of passage; Because these two kinds of cams have less difference, therefore easily cause loading error, cause and error is installed.
Therefore, how avoiding installing error is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of error prevention device, this error prevention device can solve the problem of the installation error of cam.
For achieving the above object, the invention provides a kind of error prevention device, described error prevention device comprise in order to detect be whether admission cam the first error prevention device and be whether the second error prevention device of exhaust cam in order to detect; Described first error prevention device and described second error prevention device are cylinder, and described cylindrical center is provided with the spindle hole that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin, described first error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described admission cam in order to alignment pin, and described second error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described exhaust cam in order to alignment pin.
Preferably, described first error prevention device is identical with the diameter of the spindle hole of described second error prevention device.
Preferably, described first error prevention device is identical with the diameter in the mistake proofing hole of described second error prevention device.
Preferably, described first error prevention device is identical with the diameter of the locating hole of described second error prevention device.
Preferably, the scope of the height of described first error prevention device and described second error prevention device is between 2cm ~ 15cm.
Relative to above-mentioned background technology, error prevention device provided by the invention, comprise in order to detect be whether admission cam the first error prevention device and be whether the second error prevention device of exhaust cam in order to detect; First error prevention device and the second error prevention device are cylinder, and cylindrical center is provided with the spindle hole that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin, first error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of admission cam in order to alignment pin, and the second error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of exhaust cam in order to alignment pin.Adopt such set-up mode, can the main shaft of cam be inserted in the spindle hole of error prevention device, then alignment pin is inserted in the locating hole of error prevention device, head sizes due to alignment pin is greater than the size of the locating hole of error prevention device, therefore the head of alignment pin is positioned at the outside of locating hole, protrudes from the end face of error prevention device.Then, by the blow vent of the cam be positioned on error prevention device and the head fits of alignment pin of end face protruding from error prevention device; In addition, be positioned in the mistake proofing hole of error prevention device by mistake proofing pin, and the head sizes of mistake proofing pin is greater than the size in the mistake proofing hole of error prevention device, therefore the head of mistake proofing pin is positioned at the outside in mistake proofing hole, protrudes from the end face of error prevention device.So, if this cam is exhaust cam, and this exhaust cam is placed on the second error prevention device, then the mistake proofing pin be positioned on error prevention device can match with the convex closure of this exhaust cam, thus to pick out this cam be exhaust cam; If this cam is admission cam, and this admission cam is placed on the second error prevention device, then the mistake proofing pin be positioned on error prevention device can block the convex closure of this admission cam, thus to pick out this cam be admission cam.
Accompanying drawing explanation
The cross-sectional view of the first error prevention device that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the schematic diagram of the plan structure in Fig. 1;
The cross-sectional view of the second error prevention device that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the schematic diagram of the plan structure in Fig. 3.
Detailed description of the invention
Core of the present invention is to provide a kind of error prevention device, and this error prevention device can judge that cam is admission cam or exhaust cam.
In order to make those skilled in the art understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1 to Fig. 4, the cross-sectional view of the first error prevention device that Fig. 1 provides for the embodiment of the present invention; Fig. 2 is the schematic diagram of the plan structure in Fig. 1; The cross-sectional view of the second error prevention device that Fig. 3 provides for the embodiment of the present invention; Fig. 4 is the schematic diagram of the plan structure in Fig. 3.
Error prevention device provided by the present invention, comprise in order to detect be whether admission cam the first error prevention device 10 and be whether the second error prevention device 20 of exhaust cam in order to detect; First error prevention device 10 and the second error prevention device 20 are cylinder, and the center of the first error prevention device 10 is provided with the spindle hole 13 that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin 11; The center of the second error prevention device 20 is provided with the spindle hole 23 that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin 21; First error prevention device 10 is also provided with and inserts and the locating hole coordinated with the blow vent of admission cam in order to alignment pin 12, and the second error prevention device 20 is also provided with and inserts and the locating hole coordinated with the blow vent of exhaust cam in order to alignment pin 22.
Adopt such set-up mode, can the main shaft of cam be inserted in the spindle hole of error prevention device, then alignment pin is inserted in the locating hole of error prevention device, head sizes due to alignment pin is greater than the size of the locating hole of error prevention device, therefore the head of alignment pin is positioned at the outside of locating hole, protrudes from the end face of error prevention device.Then, by the blow vent of the cam be positioned on error prevention device and the head fits of alignment pin of end face protruding from error prevention device; In addition, be positioned in the mistake proofing hole of error prevention device by mistake proofing pin, and the head sizes of mistake proofing pin is greater than the size in the mistake proofing hole of error prevention device, therefore the head of mistake proofing pin is positioned at the outside in mistake proofing hole, protrudes from the end face of error prevention device.
So, if this cam is exhaust cam, and this exhaust cam is placed on the second error prevention device 20, then the mistake proofing pin 21 be positioned on error prevention device 20 can match with the convex closure of this exhaust cam, thus to pick out this cam be exhaust cam; If this cam is admission cam, and this admission cam is placed on the second error prevention device 20, then the mistake proofing pin 21 be positioned on error prevention device 20 can block the convex closure of this admission cam, thus to pick out this cam be admission cam.
Similar, if this cam is exhaust cam, and this exhaust cam is placed on the first error prevention device 10, then the mistake proofing pin 11 be positioned on error prevention device 10 blocks the convex closure of this admission cam, thus to pick out this cam be exhaust cam; If this cam is admission cam, and this admission cam is placed on the first error prevention device 10, then the mistake proofing pin 11 be positioned on error prevention device 10 can match with the convex closure of this exhaust cam, thus to pick out this cam be admission cam.
In addition, according to practical experience, for the first error prevention device 10, the line in the center of circle in the center of circle of spindle hole 13 and mistake proofing hole is called the first straight line by us, the line in the center of circle of spindle hole 13 and the center of circle of locating hole is called the second straight line, and the scope of the acute angle between the first straight line and the second straight line is arranged on 55 ° ~ 60 °.
For the second error prevention device 20, the line in the center of circle in the center of circle of spindle hole 23 and mistake proofing hole is called the 3rd straight line by us, the line in the center of circle of spindle hole 23 and the center of circle of locating hole is called the 4th straight line, and the scope of the acute angle between the 3rd straight line and the 4th straight line is arranged on 69 ° ~ 72 °.
That is, different from the position at the passage place of admission cam for exhaust cam, the position of the locating hole on error prevention device is arranged on diverse location, thus in order to distinguish that cam is exhaust cam or admission cam.
Certainly, the spindle hole 13 of the first error prevention device 10 can be set to identical with the diameter of the spindle hole 23 of the second error prevention device 20 by we.
According to practical experience, exhaust cam is identical with the diameter of the main shaft of admission cam, and therefore the spindle hole 13 of the first error prevention device 10 is set to identical with the diameter of the spindle hole 23 of the second error prevention device 20 by we.
In addition, the mistake proofing hole of the first error prevention device 10 can be set to identical with the diameter in the mistake proofing hole of the second error prevention device 20 by we.Certainly, the locating hole of the first error prevention device 10 also can be set to identical with the diameter of the locating hole of the second error prevention device 20.To repeat no more herein.
In addition, the scope of the height of the first error prevention device 10 and the second error prevention device 20 can be arranged between 2cm ~ 15cm by we.
We can adopt the first error prevention device 10 and the second error prevention device 20 of 2cm height, effectively can detect that cam is exhaust cam or admission cam; In addition, the height of the first error prevention device 10 and the second error prevention device 20 can also be set to 15cm by us, can realize above-mentioned purpose equally; Certainly, different height is also set, repeats no more herein.
Above error prevention device provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (5)
1. an error prevention device, is characterized in that, described error prevention device comprise in order to detect be whether admission cam the first error prevention device and be whether the second error prevention device of exhaust cam in order to detect; Described first error prevention device and described second error prevention device are cylinder, and described cylindrical center is provided with the spindle hole that the main shaft in order to cam inserts and the mistake proofing hole of inserting in order to mistake proofing pin, described first error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described admission cam in order to alignment pin, and described second error prevention device is also provided with and inserts and the locating hole coordinated with the blow vent of described exhaust cam in order to alignment pin.
2. error prevention device according to claim 1, is characterized in that, described first error prevention device is identical with the diameter of the spindle hole of described second error prevention device.
3. error prevention device according to claim 2, is characterized in that, described first error prevention device is identical with the diameter in the mistake proofing hole of described second error prevention device.
4. error prevention device according to claim 3, is characterized in that, described first error prevention device is identical with the diameter of the locating hole of described second error prevention device.
5. error prevention device according to claim 1, is characterized in that, the scope of the height of described first error prevention device and described second error prevention device is between 2cm ~ 15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410743395.4A CN104440755B (en) | 2014-12-08 | 2014-12-08 | A kind of error prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410743395.4A CN104440755B (en) | 2014-12-08 | 2014-12-08 | A kind of error prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104440755A true CN104440755A (en) | 2015-03-25 |
| CN104440755B CN104440755B (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410743395.4A Active CN104440755B (en) | 2014-12-08 | 2014-12-08 | A kind of error prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104440755B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58196942A (en) * | 1982-05-12 | 1983-11-16 | Matsushita Electric Ind Co Ltd | Inserting device of disk-like ring |
| CN102059544A (en) * | 2010-11-11 | 2011-05-18 | 奇瑞汽车股份有限公司 | Method and tooling for installing camshafts |
| CN202123349U (en) * | 2011-08-22 | 2012-01-25 | 重庆银钢汽车配件制造有限责任公司 | Camshaft press and press mounting error-protection fixture thereof |
| CN203185277U (en) * | 2013-04-18 | 2013-09-11 | 东风汽车公司 | Assembling tool for engine cam shaft |
| CN204295604U (en) * | 2014-12-08 | 2015-04-29 | 重庆市银钢一通科技有限公司 | A kind of error prevention device |
-
2014
- 2014-12-08 CN CN201410743395.4A patent/CN104440755B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58196942A (en) * | 1982-05-12 | 1983-11-16 | Matsushita Electric Ind Co Ltd | Inserting device of disk-like ring |
| CN102059544A (en) * | 2010-11-11 | 2011-05-18 | 奇瑞汽车股份有限公司 | Method and tooling for installing camshafts |
| CN202123349U (en) * | 2011-08-22 | 2012-01-25 | 重庆银钢汽车配件制造有限责任公司 | Camshaft press and press mounting error-protection fixture thereof |
| CN203185277U (en) * | 2013-04-18 | 2013-09-11 | 东风汽车公司 | Assembling tool for engine cam shaft |
| CN204295604U (en) * | 2014-12-08 | 2015-04-29 | 重庆市银钢一通科技有限公司 | A kind of error prevention device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104440755B (en) | 2016-03-23 |
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