Dimension inspection device for cylindrical object and method for inspecting size of cylindrical object
A dimensional inspection and cylinder technology, which is applied to the dimensional inspection device of cylindrical objects and the field of dimension inspection of cylindrical objects, can solve problems such as shape damage to the inner peripheral surface of cylindrical objects, and achieve high-precision reproducibility Effect
Active Publication Date: 2017-11-07
NIPPON PISTONRING CO LTD
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Problems solved by technology
However, when such a contact measuring device is used to measure the inner diameter of a thin object such as a cylinder liner inserted into an automobile engine block with a wall thickness of about 2 to 3 mm, it may be difficult to Change the shape of the cylindrical object or damage the inner peripheral surface of the cylindrical object
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[0032] Hereinafter, preferred embodiments of the dimensional inspection device for a cylindrical object and the dimensional inspection method for a cylindrical object using the same according to the present invention will be described in more detail with reference to the drawings.
[0033] figure 1 It is a schematic diagram for explaining the dimension inspection apparatus of the cylindrical shape object which concerns on one Embodiment of this invention, and the dimension inspection method of a cylindrical shape object using this apparatus. in addition, figure 2 is for illustration figure 1 A diagram of the nozzle used for the measurement is shown.
[0034] The dimension inspection apparatus of the cylindrical shape object of this invention: The dimension inspection apparatus 1 of the cylindrical shape object of this invention inspects the inner peripheral surface dimension of the cylindrical shape object 20. In addition, the dimension inspection device 1 of a cylindric...
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The objective of the invention lies in providing a device and method for inspecting the size of a cylindrical object, and the device and method can enable the size of the internal periphery of the cylindrical object, which is small in wall thickness and is liable to deform, to be inspected in a short time and at a high precision. The device is provided with a measurement nozzle, and the measurement nozzle can be inserted at the internal periphery of the cylindrical object and is provided with an external peripheral surface opposite to the internal peripheral surface of the cylindrical object. Moreover, the interior of the measurement nozzle is provided with an air flowing path which enables air-blowing outlets communicated with the air flowing path to be disposed on the external peripheral surface. The device is also provided with an adjuster which is used for adjusting the pressure of compressed air supplied by an air compression source. The device is also provided with an air flow detection unit which is used for detecting the quantity of flow of air which is blown from the air-blowing outlets to the internal peripheral surface of the cylindrical object, wherein the pressure of the air is adjusted by the adjuster. The number of the air-blowing outlets is greater than six, and the air-blowing outlets are arranged at intervals at the same periphery of the external periphery of the measurement nozzle.
Description
technical field [0001] The present invention relates to a dimension inspection device for a cylindrical object and a method for inspecting the dimension of a cylindrical object using the same. In particular, the present invention relates to a dimensional inspection device for performing dimensional inspection of an inner peripheral surface of a thin and easily deformed cylindrical object with high precision, and a dimensional inspection method using the same. Background technique [0002] When measuring the inner peripheral surface dimension of a cylindrical object with high precision, for example, there is a method of measuring the inner peripheral surface dimension by bringing a contact measuring device into contact with the inner peripheral surface of the cylindrical object, usually using a bore gauge. However, when such a contact measuring device is used to measure the inner diameter of a thin object such as a cylinder liner inserted into an automobile engine block with ...
Claims
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IPC IPC(8): G01B13/00G01B13/10G01B13/02
Inventor 国分喜宣佐佐木雅浩
Owner NIPPON PISTONRING CO LTD