JPS5572814A - Measuring instrument for falling angle and falling direction of pin - Google Patents

Abstract

PURPOSE: To measure easily the falling angle and falling direction of a pin by using an external probe which is vertically movable and provided with several contact electrodes on its hollow wall and an internal probe which is movable relating to the external probe and provided with an electrode on its bottom.

CONSTITUTION: External probe 7 moves downward through control circuit 13 and when contact electrode 6 provided on the bottom of internal probe 5 which can provides relative movement in the vertical direction in the hollow of probe 7 meets pin 2, only probe 7 lowers to make one of contact electrodes 3-a, 3-b..., provided on the circumference of the hollow inside wall of probe 7, come in contact with pin 2. Consequently, the falling direction of pin 2 is measured by contact detector 15 and direction decision unit 18. On the other hand, relative movement (l) of probe 7 to probe 5 is detected by displacement detector 14, etc., and through falling-angle operator 16 providing arithmetic corresponding to diameter (d) of pin 2, falling angle (ϕ) of pin 2 is measured, so that the falling direction and falling angle of the pin can easily be measured.

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