Internal combustion engine camshaft outer contour detector and detection method
A camshaft and detector technology, applied in instruments, measuring devices, optical devices, etc., can solve the problems of cumbersome operation, large equipment investment, and inability to adapt to modern production in detection efficiency.
Inactive Publication Date: 2020-07-07
HEFEI UNIV OF TECH
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Problems solved by technology
Although these detectors have high precision, they have large equipment investment, high degree of specialization, cumbersome operation, poor versatility, and low efficiency in the actual production testing process.
For example, the lift of the intake and exhaust cams of a single-cylinder camshaft, the lift of the oil pump cam, and the included angle between the center line of the keyway and the center plane of the cam are detected once, and it takes 4 to 5 hours to locate and read the indication value. The time and detection efficiency cannot meet the needs of modern production, especially the needs of online random inspection of camshafts
Method used
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[0029] see figure 1 and figure 2 , the structural form of the internal combustion engine camshaft outer contour detector in the present embodiment is:
[0030] The base 1 is arranged horizontally, and two parallel longitudinal slide rails 14 are arranged on the base 1, figure 1 and figure 2 The longitudinal direction shown in is the Z direction, a support box 9 is fixedly installed on one side of the base 1, a tailstock slide 18 is set on the other side of the base 1, and a detection slide 17 is located between the support box 9 and Between the tailstock slides 18; the tailstock slides 18 and the detection slides 17 form sliding pairs with the longitudinal slides 14 respectively, and the tailstock slides 18 and the detection slides 17 can be adjusted by moving on the longitudinal slides 14 respective vertical positions.
[0031] A three-jaw chuck 8 is set on the supporting box 9, and a thimble 4 is set on a tailstock slide 18. The camshaft 15 to be tested is installed be...
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The invention discloses an internal combustion engine camshaft outer contour detector and a detection method. A camshaft to be measured is installed on a horizontal base through a three-jaw chuck andan ejector pin. One side of the to-be-detected camshaft is provided with a linear optical ruler, the axis of a telescopic measuring rod on the linear optical ruler is orthogonal to the axis of the to-be-detected camshaft, and a measuring head at the front end of the measuring rod in a detection state abuts against the surface of a cam of the to-be-detected camshaft. According to the invention, theservo motor drives the to-be-detected camshaft to rotate for one circle through the three-jaw chuck, so the lift and the phase angle of one cam on the camshaft can be obtained according to the outputsignal of the linear optical ruler, the rapid high-precision detection is realized, and the online detection requirement of modern production products is met.
Description
technical field [0001] The invention relates to a device for detecting the outer contour accuracy of a camshaft of an internal combustion engine, in particular to a detection device for the shape accuracy and dimension accuracy of a non-circular cam on the camshaft of an internal combustion engine. Background technique [0002] The camshaft is a core component of the internal combustion engine, and the service life of the internal combustion engine largely depends on the accuracy of the camshaft. The lift and phase angle of the cam in the camshaft are two key technical indicators; in the manufacturing process of the camshaft, for the detection of the lift and phase angle, most industry manufacturers use Abbe length measuring instruments and optical dividing heads conduct. Although these detectors have high precision, they have large equipment investment, high degree of specialization, cumbersome operation, poor versatility, and low efficiency in the actual production detect...
Claims
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Login to View More IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 王玉琳侯玉龙冯锦驰李雄孙茫茫赵一吾
Owner HEFEI UNIV OF TECH