A device for measuring the inner diameter of a large cylinder
A large cylinder and inner diameter technology, which is applied in the field of measuring the inner diameter of large cylinders, can solve the problems that the direction of the diameter of the cylinder cannot be accurately determined, and the inner diameter of the cylinder cannot be accurately measured.
Inactive Publication Date: 2019-10-25
SICHUAN UNIV
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Problems solved by technology
[0002] Since the diameter direction of the cylinder cannot be accurately determined when measuring the inner diameter of the cylinder, most of them can only measure the chord length, but cannot accurately measure the inner diameter of the cylinder
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[0009] Use a vernier caliper to measure the inner diameter of the large cylinder. Originally, the inner diameter of the measuring cylinder has no limit to the size of the inner diameter of the cylinder. Since the present invention requires two small cylinders 4 to be positioned at both sides of the rectangular through hole 8 of the plane part 1, the measurement of the inner diameter of the vernier caliper Claw 5 is positioned at the inside of rectangular through hole 8, so less inner diameter measurement is inconvenient, the lower limit of measuring range of the present invention is determined at 3cm and then helps to arrange small cylinder 4 and rectangular through hole 8 more calmly, so big cylinder is Refers to a cylinder with an inner diameter greater than 3cm, and its upper limit is constrained by the range of the vernier caliper, that is, the upper limit is the upper limit of the measurement of the vernier caliper (the upper limit of the inner diameter measurement range), ...
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The invention discloses a device for measuring the internal diameter of a large cylinder, which relates to internal diameter measurement. In the technical scheme, an upper surface and the lower surface of a planar part are mutually parallel; a rectangular through hole passing through the upper surface and the lower surface is arranged in the planar part; the lower surface of the left end of the planar part is fixed with two small cylinders; the connection line of circle centers of two contact circles formed when the two small cylinders are contacted with the lower surface is vertically and equally divided by the medial axis of the rectangular through hole; the diameter of the small cylinder is 2-3 mm; two sides of a main ruler of a vernier caliper and two inner sides of the rectangular through hole are mutually contacted and can slide; the center of the main ruler of the vernier caliper is provided with a main ruler sliding groove; and a cylinder whose diameter is smaller than the width of the main ruler sliding groove is longitudinally divided to two identical semicircular cylinders through the medial axis to form a left measurement claw and a right measurement claw. The device for measuring the internal diameter of the large cylinder has the beneficial effect that the internal diameter of the cylinder can be accurately measured.
Description
technical field [0001] The present invention relates to inner diameter measurement, especially the measurement of the inner diameter of large cylinders. Background technique [0002] Since the diameter direction of the cylinder cannot be accurately determined when measuring the inner diameter of the cylinder, most of them can only measure the chord length, but cannot accurately measure the inner diameter of the cylinder. Contents of the invention [0003] In order to accurately measure the inner diameter of a cylinder with an inner diameter greater than 3 cm, the present invention designs a device for measuring the inner diameter of a large cylinder. [0004] The technical scheme adopted by the present invention to realize the purpose of the invention is: a device for measuring the inner diameter of a large cylinder. The large cylinder refers to a cylinder with an inner diameter greater than 3 cm, including a rectangular through hole and a vernier caliper, and is character...
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IPC IPC(8): G01B5/12
CPCG01B5/12
Inventor 雍志华胡再国
Owner SICHUAN UNIV