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introduction：Allowable stress The maximum allowable stress value of a part or member in a mechanical design。To determine the working stress of the part or member after loading is too high or too low﹐A standard of measurement needs to be determined in advance﹐This criterion is the allowable stress。When the working stress in any part or member does not exceed the allowable stress﹐This part or component is safe in operation﹐Otherwise, its not safe。Allowable stress is the basic data in mechanical design。In practical application﹐The allowable stress value is generally determined by the national engineering authority according to the principles of safety and economy﹐By the strength of the material﹑load﹑Environmental condition﹑Processing quality﹑Calculate accuracy and parts or
2015-04-24 Reading quantity 2829
introduction： 1、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。]The matching with the shaft adopts the base hole system，The combination of bearing and housing adopts the base shaft system。Bearing size tolerance and rotation accuracy of the numerical pressGB307—84Regulation of...。 2、Press the journal and bearing box hole matching with the bearingG
2015-04-24 Reading quantity 1588
introduction：This paper analyzesFANUCThread cutting cycle instruction in CNC systemG92andG76Meaning and difference，The machining characteristics and their influence on the machining accuracy of the workpiece are also described。At the same time, the reference scheme of how to select the thread cutting cycle instruction reasonably is given。 inFANUCNumerical control system，CNC lathe thread cutting cycle machining has two kinds of machining instructions：G92In line cutting andG76Oblique cutting。Due to the different cutting tool feeding methods，Make the difference between the two processing methods，Their programming methods are also different，Machining of thread section after workpiece machining
2015-04-24 Reading quantity 2913
introduction： Antirust property For 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。]The grease inside must have anti-rust effect，Rust inhibitor preferably insoluble in water。The grease should have good adhesion to form an oil film on the surface of the steel，Even if the grease is filled with water, it can be maintained。 machine
2015-04-23 Reading quantity 1476
introduction： UGGroup the toolbar: BEGIN_DROPDOWN (your name) Start to group the toolbar COLUMN_DROPDOWN 5 Number of groups(Move to the next row after every five) END_DROPDOWN Final end Living example: BEGIN_DROPDOWN Ellipse Settings COLUMN_DROPDOWN 1
2015-04-23 Reading quantity 2832
introduction：1，Bending die structure design precautions： (1),The complexity of the mold structure Whether the mold structure is suitable for the punch batch (2),die frame The mold frame of the symmetrical mold should be obviously asymmetrical，To prevent on、Lower die in wrong position (3),Symmetrical bending part The punch and die fillets of symmetrical bending parts should be made equal on both sides respectively (4),Small side bend piece，Sometimes you can bend two pieces at the same time to make a symmetrical bend，To prevent the punch from sliding，The punch is cut after bending (5), billet position buy The burr side of the blanking section，Should be located on the inside of the bend
2015-04-23 Reading quantity 2841
introduction：Lubricating pairIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，Precision machining with unique mechanical equipment，Evaluate the quality of the latest machines，Products always maintain high performance and high quality level。]The impact of the performance can be mainly divided into the following aspects： 1、The first is lubricationIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，In order to
2015-04-23 Reading quantity 1624
introduction：An air filter is a device that removes particulate impurities from the air。The air filter is composed of two parts: a filter element and a housing。The main requirement of the air filter is high filtration efficiency、Low flow resistance、It can be used continuously for a long time without maintenance。Fengye mall electric forklift brake to remind the piston mechanical work，If the inhaled air contains impurities such as dust, it will aggravate the wear of the parts，So an air filter must be installed。 Air filter is mainly used in pneumatic machinery、Internal combustion machinery and other fields，Mainly to provide clean air for these mechanical equipment，To prevent these mechanical equipment in the work suction
2015-04-23 Reading quantity 2966
introduction：Practically speaking，Chinas iron and steel enterprises in general product sales mode is still relatively backward，First, the proportion of direct enterprise supply is only35.99%，And the proportion of sales through steel distributors42.16%，Above direct supply6.17A surname
2015-04-23 Reading quantity 100870
introduction：To judge the disassembledIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，Precision machining with unique mechanical equipment，Evaluate the quality of the latest machines，Products always maintain high performance and high quality level。]Whether it can be used again，Check the bearing after washing，Carefully check the raceway surface、Rolling surface、State of mating surface、The wear condition of the cage、The increase of the clearance of thrust angular contact ball bearing and whether there is damage related to the decrease of dimensional accuracy、abnormal。Non-separable pellets
2015-04-23 Reading quantity 1818
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