Testing apparatus for testing perpendicularity
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorBing-Jun Zhang
Life of this patent
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Abstract
A testing apparatus for testing perpendicularity of an end surface of a workpiece is disclosed. The testing apparatus includes an electrically conductive first reference piece defining two guide holes, and two testing units. The testing units are slidably engaged in the guide holes, so as to form two testing circuits. At a normal state, each testing circuit is closed, and each testing unit extends out of the guide hole for a distance, wherein the distance corresponds to an allowable perpendicularity tolerance. Each testing unit can be pushed to retract back to the guide holes by the end of the workpiece to cause the testing circuit to be opened. The opened state or closed state of each of the testing circuits will help show the status of the perpendicularity of the end surface of the workpiece.
Claims15
A testing apparatus for testing perpendicularity of an end surface of a workpiece, comprising:
- an electrically conductive first reference piece configured to be abutted against the end surface of the workpiece, wherein two guide holes are defined in the first reference piece;
- and
- two testing units, each testing unit comprising:
- an electrically conductive trigger piece;
- an electrically conductive sliding member;
- wherein the sliding member comprises a testing block, and a touching piece attached to the testing block;
- the testing block is slidably engaged in one of the guide holes of the first reference piece;
- and
- an elastic member;
- wherein the trigger piece, the touching piece, the testing block, and the first reference piece cooperatively form a testing circuit;
- at a normal state, the elastic member biases the touching piece to contact the trigger piece to close the testing circuit, and to cause the first testing block to extend out from one of the guide holes to a distance, the distance corresponds to an allowable perpendicularity tolerance.
Dependencies are inferred from the claim text.