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introduction：When redirecting a view，Pro/ENGINEER Dynamic display model。Such as，When you spin、translation、When scaling or flipping items，You will see the item change as the mouse moves。 “rotate”、“translation”、“Zoom”and“flip”Both are available by clicking the middle mouse button as well as with SHIFT Key OR CTRL Key combination（In addition to“rotate”Other than）To realize。Three-button mouse Rotate and hold the middle mouse button + Move the mouse to pan hold down the middle mouse button + SHIFT key + Move the mouse to zoom and hold down the middle mouse button + CTRL key + Vertical mobile mouse
2014-12-20 Reading quantity 2859
introduction：A. Whether the design changes are actually recorded in the latest version of the finished drawing？ B. There is no model replacement？Whether the mold structure of the exchange mold is OK？Is it convenient to disassemble and assemble？ C. Whether the resin related intelligence is detailed？Whether the physical property table has been obtained？ 1. Resin name。 2. Lv.。 3. colour。 4. Forming shrinkage。 5. Shrinkage rate and injection pressure(Or intracavity pressure)、Holding time、The flesh is thick、Pipe temperature、Mold temperature and other relations change。 6. Processing fluidity(Flow length orL / Tthan)Sum injection pressure、Mold temperature、
2014-12-20 Reading quantity 2955
introduction： Standard number Standard Chinese name Standard English name GB/T13852-1992 Technical conditions for Marine hydraulic control valves General specification of hydraulic control valves for
2014-12-20 Reading quantity 3026
introduction： Direct measuring Hall current sensor Primary side currentIpThe resulting magnetic flux is concentrated in the magnetic circuit，Hall voltage signal is detected by Hall device，amplification，The voltage signal accurately reflects the primary current。 Magnetically balanced Hall current sensor Primary side currentIpThe resulting magnetic flux and Hall voltage are amplified by the secondary side currentIsPhase balance of the magnetic flux produced by the secondary side coil。Secondary side currentIsAccurately reflect the primary current。 Magnetically balanced Hall voltage sensor Primary side
2014-12-20 Reading quantity 3055
introduction： Generally speaking，To control rolling bearings[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Noise effect，The causes of these noises must be addressed，In order to receive the root effect。The main way is： (1)Choose low noise bearings[bearing:bearing（“Bearing”，Japanese person
2014-12-20 Reading quantity 1641
introduction：Determine the removed bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]When it can be used again，To be in tapered roller bearings[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft
2014-12-20 Reading quantity 1612
introduction： When testing chromium steel and stainless steel asFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Material when the advantages，And it turns out theyre not just anti-rust。Chromium steel is the most commonFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Materials。Its harder than stainless steel，So the service life is longer。But at higher temperatures
2014-12-20 Reading quantity 1650
introduction：Industry experts recently pointed out，Chinas construction machinery products must be certified in international standards、quality、Service level、Breakthroughs have been made in intellectual property rights，Only in this way can we really improve our competitiveness in the international market Since our country joins WTO，Construction machinery industry has made great progress，The number of manufacturing enterprises has also increased rapidly，For every business，To expand market share，Participating in international competition is a necessary way。Industry experts recently pointed out，The products of domestic construction machinery manufacturers want to enter the international market，Four thresholds must be breached： One is certification。Chinas construction machinery products can be obtained
2014-12-20 Reading quantity 1531
introduction： After loading and adjusting﹐Can automatically complete the work cycle according to certain procedures﹐A lathe that repeatedly processes a batch of workpieces。Lathes that can automatically complete the work cycle except for loading and unloading parts are called semi-automatic lathes。Automatic lathe can reduce the manual labor intensity of workers﹐Reduce auxiliary time﹐Multiple machine tools can be supervised by one person﹐Higher productivity。 By number of spindle﹐Automatic lathes are divided into single-axis and multi-axis two categories。The former mainly has a uniaxial longitudinal cutting﹑Single axis turret and single axis crosscut3Species type﹔The latter mainly has two kinds of sequential operation and parallel operation﹐And according to the configuration of the spindle there are vertical and horizontal points。Machine tools generally use cams and stops
2014-12-20 Reading quantity 2866
introduction： 1、FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Radial load The main bearing bearing radial load is the radial bearing。Nominal contact Angle of this type of bearinga0<=450。Roller bearings of the same size can bear more radial loads than ball bearings。 NType sumNUCylindrical roller bearings can only bear radial loads，Other types of radial bearings can withstand radial loads，
2014-12-20 Reading quantity 1567
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