SU561086A1 - Differential pneumatic device for controlling linear dimensions - Google Patents
Differential pneumatic device for controlling linear dimensionsInfo
- Publication number
- SU561086A1 SU561086A1 SU2338247A SU2338247A SU561086A1 SU 561086 A1 SU561086 A1 SU 561086A1 SU 2338247 A SU2338247 A SU 2338247A SU 2338247 A SU2338247 A SU 2338247A SU 561086 A1 SU561086 A1 SU 561086A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- linear dimensions
- pneumatic device
- nozzle
- controlling linear
- differential pneumatic
- Prior art date
Links
Landscapes
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Description
1one
Изобретение относитс к средствам измерени линейных размеров и может быть использовано в машиностроении.The invention relates to measuring linear dimensions and can be used in mechanical engineering.
Известны пневматические устройства дл контрол валов в процессе, шлифовани , содержащие дифференциальный узел отсчета, размещенные на губках и сообщенные с одной из полостей узла отсчета измерительные сопла и сопло противодавлени , сообщенное с другой полостью узла.Pneumatic devices for monitoring shafts in the grinding process are known, containing a differential reference unit, placed on jaws and measuring nozzles and a counterpressure nozzle communicated with one of the cavities of the reference unit, communicated with the other cavity of the unit.
Наиболее близким по технической сущности к предложенному изобретению вл етс дифференциальное пневматическое устройство дл контрол , линейных размеров, содержащее узел базировани объекта контрол .и ПневмаГическнй мос с соплами , измерительным и противодавлени , причем сопло прОтйбодавле.ни выполнено-в видв: рёЗгулируемого. дроссел , размещенного в узле базировани Г . , . в известных устройствах измеритель ные сопла образуют зазор с поверхностью объекта контрол , и расход газа через них зависит не только от величины зазора, определ емого линейным размером объекта, но и от шероховатости поверхности последнего, егр температуры , температуры сопла и т.д. The closest in technical essence to the proposed invention is a differential pneumatic control device, linear dimensions, containing the base unit of the test object. And a PneumaGical bridge with nozzles, measuring and counterpressure, and the nozzle is naturally reconstructed. throttle located in the base node G. , In known devices, measuring nozzles form a gap with the surface of an object of control, and the gas flow through them depends not only on the size of the gap, which is determined by the linear size of the object, but also on the surface roughness of the latter, spr temperature, nozzle temperature, etc.
Поскольку расход через сопло противодавлени не зависит от указанных факторов, возникает погрешность, обусловленна неидентичностью условий истечени газа через измерительное сопло и сопло противодавлени .Since the flow rate through the backpressure nozzle does not depend on the indicated factors, an error arises due to the non-identical conditions of gas outflow through the measuring nozzle and the backpressure nozzle.
Цель изобретени - повышение точности контрол .The purpose of the invention is to improve the accuracy of control.
Эта цель достигаетс тем, что сопло противодавлени размещено в узле базировани , в месте, перекрываемом объектом контрол .This goal is achieved by the fact that the backpressure nozzle is located in the base unit, in the place covered by the control object.
На чертеже изображена схема предлагаемого устройства.The drawing shows a diagram of the proposed device.
Устройство содержит узел базировани 1, пневматический мост 2 с иэмврительным соплом 3 и соплом 4 противодавлени . Сопло 4 размещено в узле базировани 1 и перекрываетс объектом 5 контрол .The device comprises a base unit 1, a pneumatic bridge 2 with an instrumental nozzle 3 and a back pressure nozzle 4. The nozzle 4 is located in the base unit 1 and overlaps with the control object 5.
Сжатый газ через пневматический мост 2 поступает в сопла 3 и 4 и истекает через зазоры S, и с объектом контрол . Зазор Sj посто нен, зазор Ь, зависит от линейного размера объекта контрол . Поскольку услови истечени газа через зазоры 5, и Sj индентичны, разность расхода газа через сопла 3 и 4 или разность давлений на входе в них, воспринимаема отсчетно - командным узлом (на чертеже, не показан) од означно характеризует линейный размер объекта.Compressed gas through the pneumatic bridge 2 enters the nozzles 3 and 4 and expires through the gaps S, and with the object of control. The gap Sj is constant, the gap b, depends on the linear size of the control object. Since the conditions of gas outflow through the gaps 5, and Sj are identical, the difference in gas flow through nozzles 3 and 4 or the pressure difference at the inlet to them, perceived by the reference - command node (in the drawing, not shown) odely describes the linear size of the object.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2338247A SU561086A1 (en) | 1976-03-19 | 1976-03-19 | Differential pneumatic device for controlling linear dimensions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2338247A SU561086A1 (en) | 1976-03-19 | 1976-03-19 | Differential pneumatic device for controlling linear dimensions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU561086A1 true SU561086A1 (en) | 1977-06-05 |
Family
ID=20653590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2338247A SU561086A1 (en) | 1976-03-19 | 1976-03-19 | Differential pneumatic device for controlling linear dimensions |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU561086A1 (en) |
-
1976
- 1976-03-19 SU SU2338247A patent/SU561086A1/en active
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