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Instrument for measuring degree of symmetry of key slot in hole

A technology for measuring instruments and symmetry, applied in the field of measuring instruments, can solve the problems of lack of direct measurement and reading, lack of directness, accuracy and on-site operability, and achieve the effects of high detection accuracy, convenient measurement and reading, and flexible use

Inactive Publication Date: 2011-02-16
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When enterprises process the keyway in the hole on the aperture, they still mainly use indirect detection methods such as tool setting, sample plate and dividing head to measure the symmetry and parallelism of the keyway in the hole, which lacks directness, accuracy and on-site reliability. Operability, there is currently a lack of measuring tools to directly measure the position of the keyway on the diameter of the cylinder and the diameter of the cone

Method used

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  • Instrument for measuring degree of symmetry of key slot in hole
  • Instrument for measuring degree of symmetry of key slot in hole
  • Instrument for measuring degree of symmetry of key slot in hole

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Embodiment Construction

[0018] Such as Figure 1-4As shown, the measuring instrument is assembled from a probe head assembly, a slide bar body assembly, a measuring body assembly and a centering rod assembly; the probe head assembly includes a probe head 9, a T-shaped slide bar 8, a lower ratchet wheel 27, an upper Ratchet 24, D spring 23 and inner snap spring 25, the upper end of the oval probe 9 is provided with a cylindrical hole, the lower end of the probe 9 is provided with an inner taper hole, and the upper end of the vertical part of the T-shaped slide bar 8 is provided with a keyway. Cylinder shaft diameter, the vertical part lower end of T-shaped slide bar 8 is provided with cone shaft diameter, and the horizontal part of T-shaped slide bar 8 is cylinder, and cylinder bottom middle part is provided with big V-shaped groove, and two sides of big V-shaped groove The side is provided with a ball groove, and the lower ratchet wheel 27, the key 26, the upper ratchet wheel 24 and the D spring 23 i...

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Abstract

The invention discloses an instrument for measuring the degree of symmetry of a key slot in a hole, and the measuring instrument is assembled by a detecting head component, a slide bar body component, a measuring body component and a centering rod component; and a universal digital display device or a dial indicator is used as a display module for measured value, and the degree of symmetry and the parallelism error of the key slot in the hole on the pore diameter of a cylinder and the pore diameter of a cone are directly measured and displayed, thereby making up for the blank in measuring tools for directly measuring and reading the position of the key slot on the pore diameter of the cylinder and the pore diameter of the cone.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to an instrument for measuring the symmetry of a keyway in a hole. Background technique [0002] As we all know, key connection is often used in mechanical design and mechanical manufacturing. Keyway has high position accuracy requirements on shaft diameter and hole diameter, because they have a direct impact on the matching accuracy, assembly quality and production efficiency of parts. When enterprises process the keyway in the hole on the aperture, they still mainly use indirect detection methods such as tool setting, sample plate and dividing head to measure the symmetry and parallelism of the keyway in the hole, which lacks directness, accuracy and on-site reliability. Operability, there is currently a lack of measuring tools for directly measuring the position of the keyway on the diameter of the cylinder and the diameter of the cone. Contents of the invention [0003] The purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/24G01B5/252
Inventor 王文志左晓明
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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