Flatness detector
AssigneesHon Hai Precision Industry Co., Ltd., Fu Tai Hua Industry (Shenzhen) Co., Ltd.
InventorsLI-CHIN LU, JIAN-HUA XIANG
Life of this patent
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Abstract
A flatness detector includes a positioning plate, a positioning assembly arranged on a top surface of the positioning plate, a dial indicator arranged on the positioning assembly, and a sliding block. The positioning assembly includes a first positioning rod and a second positioning rod perpendicularly coupled together and pin-jointed. The dial indicator includes a detecting post maintained as a plumb line by the positioning assembly. The sliding block defines a groove for conforming to the detecting post. A measurement value of the dial indicator is obtained when the groove of the sliding block is conformed to the detecting post.
Claims12
A flatness detector comprising:
- a positioning plate;
- a positioning assembly arranged on a top surface of the positioning plate, the positioning assembly comprising a first positioning rod and a second positioning rod perpendicularly coupled together and pin-jointed;
- a dial indicator arranged on the positioning assembly, the dial indicator comprising a detecting post maintained as a plumb line by the positioning assembly;
- and
- a sliding block defining a groove for conforming to the detecting post;
- wherein a measurement value of the dial indicator is obtained when the groove of the sliding block is conformed to the detecting post.
A method for using a flatness detector, the method comprising:
- using a calibrating block to calibrate a flatness detector to make a measurement value of a dial indicator return to zero value;
- placing a positioning plate of the flatness detector on a reference surface of a test piece and positioning a detecting post of the flatness detector on a test surface of the test piece;
- adjusting the detecting post to be perpendicular to the test surface and conforming a groove of a sliding block to the detecting post;
- and
- reading a measurement value of the dial indicator to obtain corresponding information between the reference surface and the test surface.
Dependencies are inferred from the claim text.