Cylinder bore inner surface inspection method and inspection device

An inspection method and inspection device technology, applied in the direction of measuring devices, optical devices, optical testing flaws/defects, etc., can solve the problems of difficult insertion of mirrors, difficulty in obtaining clear images, etc., and achieve the effect of avoiding halo

Pending Publication Date: 2021-07-16
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a light source and a light receiver (mirror) are inserted into the inner surface of the cylinder bore, the strongly reflected light from the inner surface of the cylinder bore produces a halation, so that it is difficult to obtain a mirror suitable for fine unevenness. In addition to the problem of clear images for detection, there is also the problem that it is difficult to insert the laser light source and the mirror for light reception into the small diameter cylinder bore

Method used

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  • Cylinder bore inner surface inspection method and inspection device
  • Cylinder bore inner surface inspection method and inspection device
  • Cylinder bore inner surface inspection method and inspection device

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Embodiment Construction

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0027] figure 1 It is an overall view showing the inspection device of the inner surface of the cylinder bore according to the embodiment. 10 is a pair of left and right pillars, 11 is an upper frame supported by the pair of pillars 10, and 12 is a lower frame. A plurality of guide columns 13 are provided between the upper frame 11 and the lower frame 12. 14 is a flat plate-shaped elevating frame, and the elevating frame 14 is guided by the guide columns 13 so as to be raised and lowered while maintaining a horizontal posture.

[0028] A nut 15 is fixed to the upper surface of the elevating frame 14 , and a feed screw 16 vertically provided between the upper frame 11 and the lower frame 12 passes through the nut 15 . The feed screw 16 is rotated in forward and reverse directions by an elevating motor 17 provided above the upper stage 11 , so that the elevating stage 1...

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Abstract

The invention provides a method and a device for inspecting the inner surface of a cylinder hole, which can accurately inspect damage on intersection lines of the inner surface of the cylinder hole without depending on human eyes. A light source (24) located at a position outside an opening surface of a cylinder hole (B) of an engine (E) irradiates light toward the inside of the cylinder hole (B), and a camera (23) outside the opening surface of the cylinder hole captures an image of reflected light from the inner surface of the cylinder hole and reflected on a mirror (25) inserted into the cylinder hole. The light source (24) and the mirror (25) are rotated in the circumferential direction of the cylinder bore and moved in the axial direction of the cylinder bore, thereby inspecting damage occurring on the intersecting line of the inner surface of the cylinder bore.

Description

technical field [0001] The present invention relates to an inspection method and an inspection device for an inner surface of a cylinder bore suitable for automatically inspecting damages occurring on intersection lines formed on the inner surface of a cylinder bore of an engine. Background technique [0002] The cylinder bore of the engine is the part that uses the energy of combustion to make the piston move up and down at high speed. Therefore, when the engine oil is not applied to the inner surface of the cylinder bore, smooth piston movement cannot be performed. If the inner surface of the cylinder bore is smooth and mirror-like, the engine oil will be completely scraped off by the piston ring from the inner surface of the cylinder bore, preventing the piston from moving. Therefore, generally, the grinding wheel forms a fine intersecting concavo-convex pattern with a depth of 0.1 mm or less on the inner surface of the cylinder bore so that the engine oil is retained in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/954G01N21/88G01B11/30
CPCG01N21/954G01N21/8806G01B11/30
Inventor 上田昂洋西川昌司前迫大器
Owner TOYOTA JIDOSHA KK
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