SU152742A1 - - Google Patents
Info
- Publication number
- SU152742A1 SU152742A1 SU768247A SU768247A SU152742A1 SU 152742 A1 SU152742 A1 SU 152742A1 SU 768247 A SU768247 A SU 768247A SU 768247 A SU768247 A SU 768247A SU 152742 A1 SU152742 A1 SU 152742A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- reference measure
- scales
- size
- hole
- measured
- Prior art date
Links
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical Effects 0.000 description 1
Description
Известные способы измерени малых внутренних размеров от 1 мм лутем контакта измерительных наконечников с поверхност ми эталонной меры и измер емой детали дают погрешность измерени не менее ±3 ж/с.The known methods for measuring small internal dimensions from 1 mm by contacting the measuring tips with the surfaces of the reference measure and the measured part give a measurement error of at least ± 3 w / s.
Описываемый способ отличаетс от известных тем, что дл получени более высокой точности измер ют рассто ни от поверхностей установочного приспособлени до эталонной меры и до отверсти детали и по разности сумм отсчетов двух шкал определ ют действительный диаметр отверсти .The described method differs from those known in that, in order to obtain higher accuracy, the distances from the mounting device surfaces to the reference measure and to the part hole and the difference in the sum of the readings of the two scales are determined by determining the actual hole diameter.
Сущность описываемого способа состоит в том, что диаметр измер емого отверсти определ етс , какThe essence of the described method is that the diameter of the hole being measured is defined as
(0« + 0,0 - (Оа + 0|), (0 "+ 0.0 - (Oa + 0 |),
где М-размер эталонной меры; О и -отсчеты по шкалам на эталонной мере;where M is the size of the reference measure; O and -scales on the reference measure;
(3 и О -отсчеты по шкалам на размер детали. Размер эталонной меры М не должен отличатьс от размера детали более суммарной величины расхода шкал оптиметровых трубок.(3 and О -calculations on the size of the part. The size of the reference measure M should not differ from the size of the part by more than the total value of the consumption of the scales of the optical tubes.
Предмет изобретени Subject invention
Способ измерени малых внутренних размеров путем контакта измерительных наконечников с поверхност ми эталонной меры и измер емой детали, отличаю ш:ийс тем, что, с целью получени более высокой точности, измер ют рассто ни от поверхностей установочного приспособлени до эталонной меры и до отверсти детали и по разности сумм отсчетов двух шкал определ ют действительный диаметр отверсти .The method of measuring small internal dimensions by contacting the measuring tips with the surfaces of the reference measure and the part to be measured is different from the fact that, in order to obtain higher accuracy, the distances from the surfaces of the installation tool to the reference measure and to the hole of the part and The actual hole diameter is determined from the difference in the sum of the readings of the two scales.
Publications (1)
Publication Number | Publication Date |
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SU152742A1 true SU152742A1 (en) |
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