Thickness determining apparatus
A measuring device and measuring plate technology, which is applied in the direction of mechanical thickness measurement, etc., can solve problems such as deterioration of measurement accuracy and zero point change
Active Publication Date: 2008-06-18
AISIN AW CO LTD
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Problems solved by technology
Even if the sensor is not damaged, there is a possibility that the so-called zero point changes due to impact, which may deteriorate the measurement accuracy.
Method used
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Embodiment 1
[0033] A thickness measuring device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8 .
[0034] The thickness measuring device 1 of the present embodiment, as shown in Fig. 7 and Fig. 8, is to measure the multi-piece plate composed of a plurality of ring-shaped plates 80-89 assembled in the automatic transmission. Device for workpiece 8 thickness. The workpiece 8, as shown in Fig. 7 and Fig. 8, is composed of a plurality of ring-shaped plates 80-89 with splines on the inner or outer peripheral sides stacked together, and is a part with the following properties, that is, compared with The respective thicknesses of each sheet must be accurately grasped when they are stacked together (the thickness of T shown in FIG. 8 in this embodiment).
[0035] Thickness measuring device 1, as shown in Fig. 1~Fig. 5, comprises: the bearing table 11 that has bearing surface 110 of described workpiece 8; Has the reference plate 2 of measureme...
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The present invention provides a thickness measurement device that does not damage a measurement sensor and can maintain measurement accuracy stably even if manual work is performed. The lifting part (3) has a contact body (31) in contact with the workpiece (8), abuts against the measurement reference surface (20) and determines the reference rod (32) for measuring the reference point, and measures the displacement of the measurement contact body (31). device (33). The reference plate (2) has a preparation surface (22) located above the measurement reference surface (20), a connection surface (21) smoothly connecting the preparation surface and the measurement reference surface, and can slide in a direction perpendicular to the lifting direction of the lifting part. The movable position of the reference plate is set as a measurement position where the reference rod comes into contact with the measurement reference surface, and a preparation position where the reference rod comes into contact with the preparation surface (22). The height of the preparation surface is set to a height at which the contact body (31) does not come into contact with the workpiece when the elevation part is lowered and the preparation surface abuts against the lower end (320) of the reference rod.
Description
technical field [0001] The present invention relates to a thickness measuring device capable of preventing failure of the device when measuring the thickness of a plate-shaped workpiece and continuously performing high-precision measurement. Background technique [0002] For example, as a component (work) assembled in an automatic transmission, there is a multi-plate type in which a plurality of plates used in a wet multi-plate clutch / brake are stacked together. When assembling this part, its thickness must be measured correctly. According to this thickness, it is necessary to select the assembly plate to be combined for adjusting the piston stroke of the clutch and brake from various types. Therefore, in this case, measuring the thickness of the workpiece becomes an indispensable task. In addition, not only the parts of the automatic transmission, but also the thickness of the parts may have to be measured as necessary. [0003] However, as a device for measuring the thic...
Claims
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Inventor 谷口孝男沟口健治近藤展充桥本邦之富田武
Owner AISIN AW CO LTD