Checking fixture, inspection method of turbocharger middle casing

A technology of checking tools and measuring rods, which is applied in the direction of mechanical clearance measurement, instruments, measuring devices, etc., can solve problems such as low efficiency and inaccurate measurement, simplify inspection steps, improve measurement accuracy, and solve repeatability and reproducibility Effect

Active Publication Date: 2022-03-08
KEHUA HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a checking tool and a detection method for the middle casing of the turbocharger, and to solve the distance detection from the oil inlet step surface of the middle casing of the turbocharger to the bearing hole There are problems of low efficiency and inaccurate measurement

Method used

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  • Checking fixture, inspection method of turbocharger middle casing
  • Checking fixture, inspection method of turbocharger middle casing
  • Checking fixture, inspection method of turbocharger middle casing

Examples

Experimental program
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Embodiment 1

[0030] Such as Figure 1 to Figure 5 As shown, a checker includes a reference shaft 3, which is suitable for being inserted into the bearing hole 21 of the middle shell 2. The reference shaft 3 is provided with a centering mechanism and a measuring part 32. The centering mechanism is suitable for bearing The hole 21 is matched so that the centerline of the reference shaft 3 coincides with the centerline of the bearing hole 21; the center of the outer diameter of the measuring part 32 coincides with the centerline of the reference shaft 3, and the measuring part 32 is located on the side of the oil inlet hole 22; The measuring tool is suitable for matching with the inner step surface 23 of the oil inlet hole 22. The measuring rod 5 of the dial gauge measuring tool passes through the oil inlet hole 22 and abuts against the outer diameter of the measuring part 32 perpendicularly, so that the measuring The rod 5 is displaced in the dial indicator measuring tool, and the dial indic...

Embodiment 2

[0050] Such as Figure 5 As shown, a method for detecting the middle case 2 of a turbocharger adopts the inspection tool described in Embodiment 1, including: positioning the middle case 2: inserting the reference shaft 3 from the bearing hole 21 of the middle case 2, so that the reference shaft 3 The centerline of the centerline coincides with the centerline of the bearing hole 21 of the middle shell 2; when the reference shaft 3 is manufactured, ensure that the tapered part 31, the measuring part 32 and the limit part 33 are all on the same axial centerline, and then ensure that the measuring part 32 The center of the outer diameter circle is also on the axis; then the tapered portion 31 and the stop portion 33 cooperate with the bearing hole 21 to ensure that the axis of the reference shaft 3 coincides with the axis of the bearing hole 21.

[0051] Calibration of the dial indicator measuring tool: insert the measuring rod 5 of the dial indicator measuring tool into the cali...

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Abstract

The invention relates to the technical field of auto parts processing, in particular to a checker, including a reference shaft, on which a centering mechanism and a measuring part are arranged; After passing through the oil inlet hole, it is perpendicular to the outer diameter of the measuring part, so that the measuring rod is displaced in the dial indicator measuring tool. The dial indicator measuring tool displays the measured value according to the displacement of the measuring rod. Comparison of certain values ​​to check whether the middle shell is qualified. A method for detecting a turbocharger middle casing, using the above-mentioned inspection tool, comprising: positioning the middle casing so that the centerline of the reference shaft coincides with the centerline of the bearing hole of the middle casing; the calibration position of the dial gauge gauge; the detection of the dial gauge gauge : Insert the plug-in part of the dial indicator gauge through the oil inlet hole of the middle case, and observe whether the pointer is at the zero position set by the calibration, so as to judge whether the middle case is qualified. The inspection steps are simplified, the inspection efficiency is improved, and the measurement accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of auto parts processing, in particular to a testing tool and a testing method for a turbocharger middle casing. Background technique [0002] Such as figure 1 In the middle casing 2 of the turbocharger shown, during the production and testing process, the distance L between the inner step surface 23 of the oil inlet hole of the middle casing 2 and the centerline of the bearing hole 21 needs to be tested. The restricted workpiece structure and the bearing hole 21 are virtual points that cannot be directly measured. [0003] The current inspection method ① Use a magnetic suction block to support the workpiece and pull it to the level based on the end face 24 of the oil inlet hole; ② Use a height gauge to measure the end face 24 of the oil inlet hole and the lowest point of the bearing hole 21 to obtain the distance (a) ;③ Use a caliper to measure the diameter of the bearing hole 21 and divide it by 2 to obt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/00G01B5/02G01B5/14
CPCG01B5/00G01B5/02G01B5/14
Inventor 张瑜
Owner KEHUA HLDG
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