JPS59116807U

JPS59116807U - air micrometer

Info

Publication number: JPS59116807U
Application number: JP1055983U
Authority: JP
Inventors: 宮中　弘志; 宇都宮　秋一
Original assignee: マツダ株式会社
Priority date: 1983-01-27
Filing date: 1983-01-27
Publication date: 1984-08-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、本考案のエアマイクロメータの１実施例を示
す一部破断側面図である。第２図および第３図は、マス
ターが大径部に当接した非測定時における第１図のそれ
ぞれＢ−Ｂ線およびＡ−Ａ線に沿う断面図である。１・・・ゲージロッド、２・・・ゲージロッド大径部、
３・・・ゲージロッド小径部、４・・・マスター、５・
・・空気放出用開口、８・・・案内孔、９・・・下限マ
スタ一孔部、１０・・・上限マスタ一孔部、１３・・・
スプリング。FIG. 1 is a partially cutaway side view showing one embodiment of the air micrometer of the present invention. 2 and 3 are cross-sectional views taken along line BB and line AA in FIG. 1, respectively, during non-measurement when the master is in contact with the large diameter portion. 1... Gauge rod, 2... Gauge rod large diameter part,
3... Gauge rod small diameter part, 4... Master, 5...
...Air release opening, 8...Guide hole, 9...Lower limit master one hole part, 10...Upper limit master one hole part, 13...
spring.

Claims

[Scope of utility model registration request]

The gauge rod has a gauge rod connected to the meter body via an air conduit; a small diameter portion located on the end side; an opening provided on the circumferential surface of the large diameter portion for discharging air from the air conduit;
A ring-shaped master is fitted around the small diameter portion; an inner hole of the ring-shaped master has a guide hole for sliding the master in the longitudinal direction of the gauge rod along the small diameter portion; It consists of a master hole section with a diameter slightly larger than the large diameter section, and the master hole section has an upper limit master hole section with a diameter corresponding to the upper limit of the allowable inner diameter of the part to be measured, and a master hole section with a diameter corresponding to the upper limit of the allowable inner diameter of the part to be measured. and a lower limit master hole with a diameter corresponding to the lower limit; the master is urged toward the large diameter portion by an elastic member, whereby the part to be measured is not fitted into the large diameter portion. At the time of measurement, the master is in contact with the large diameter portion so that one hole of the upper limit master or one hole of the lower limit master faces an opening provided in the gauge rod. Air micrometer for measuring the inner diameter of parts.