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introduction：In order to fit The products that should be manufactured by technology are increasingly diverse、Higher production efficiency and environmental requirements，High-speed cutting has followed、Dry cutting and other new processing technology。High speed cutting technology significantly reduces the cutting time during machining，This is the result of using new tool materials and coatings。On this basis，The potential to increase productivity by further improving cutting parameters is limited。 Another way to increase productivity is to minimize support time。First of all，The process method of breaking down complex parts into many processes and using many tools accounts for a lot of tool change time and pre-process
2015-01-11 Reading quantity 2938
introduction：InstallIKOBearings should be as dry as possible、Do it in a dust-free room，And should be away from metal processing or other will produce metal dust and dust equipment。Bearings must be installed in an unprotected environment[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（This is often the case with larger bearings），Appropriate measures must be taken to protect bearings and phases
2015-01-11 Reading quantity 1605
introduction： 1. Timken 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。]Size of load、Direction and nature[The load capacity of the bearing is expressed by the basic rated load，The values are given in the bearing size table]Bearing loads vary widely，Such as the size of the load、
2015-01-11 Reading quantity 1501
introduction：European Union（Through their respective governmentsEUREKE project）in1998 and2000 Supported by"Paperless mold design and manufacturing"This research and development project。This paper describes the work and results of this project。Further research in this field－Further expand the projects focus on results，In particular, it is widely used in mold design and manufacturingInternet-based（internet-based）Tools and methods，It is currently being developed by another European project－e_mould proceed。 item Project purpose： · Study the entire life cycle of mold design and manufacturing
2015-01-11 Reading quantity 2854
introduction：Defect name Defect expression cause Elimination and prevention methods Mechanical properties are not qualified Annealed conditionδ5low，The strength and elongation after quenching or aging treatment are not up to standard。 Low annealing temperature or insufficient holding time，Or cool too fast；Low quenching temperature or insufficient holding time，Or the cooling speed is too slow（The quenching medium temperature is too high）；The temperature of incomplete artificial aging and complete artificial aging is high，Or holding time is too long，The chemical composition of the alloy is deviated。 reannealing，Increase the temperature or extend the holding time；Increase quenching temperature or extend holding time，Reduce the quenching medium temperature；requench，the
2015-01-11 Reading quantity 1626
introduction：Principle of casting method selection：1．Preferred sand casting according to statistics，Chinese or international，In total casting production，60～70％The castings are made of sand，And among them70％Left and right are made of clay sand。The main reason is that sand casting costs less than other casting methods、Simple production process、Short production cycle。So its like the engine block of a car、Cylinder head、Crankshaft and other castings are produced by the clay wet sand process。When the wet type can not meet the requirements, then consider using clay sand table dry sand type、Dry sand type or other sand type。Clay wet sand casting casting
2015-01-11 Reading quantity 2918
introduction： Maintain the bearing well[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。]It is a necessary condition for bearing operation，The common maintenance is for the lubrication of bearings，How to choose the lubrication method of bearings in Reading，Under the premise of understanding the lubrication method of bearings，It is also necessary to understand the maintenance of bearing systems
2015-01-11 Reading quantity 1605
introduction： Electric forklift usually need to pay attention to matters 1、Adjustment operation。The adjustment operation is an important work to restore the good technical performance of the forklift and ensure the normal fit clearance。The quality of adjustment work directly affects the economy and reliability of electric forklift。The adjustment operation must be carried out in a timely manner according to the actual situation。 2、Cleaning operation。Cleaning operation is to improve the quality of vehicle maintenance，Reduce wear and tear of parts and reduce oil and material consumption，And can be checked、fastening、Prepare for lubrication and adjustment operations。 qing
2015-01-11 Reading quantity 2835
introduction： 1 introduction Manufacturing industry provides great wealth for mankind at the same time, Its also constantly producing pollutants, It has a serious negative impact on the environment。 There is also a waste of resources caused by improper selection and utilization of materials in the manufacturing process of ships, And to the air、Environmental pollution of soil and water。 Marine green manufacturing technology, It is a modern manufacturing model that considers environmental factors and resource utilization efficiency。The requirement is to minimize the negative impact on the environment, Requires efficient use of raw materials and energy
2015-01-11 Reading quantity 2820
introduction： The division of line scale was amplified by microscope optical system﹑Subdivision and reading length measuring tools。It is often used as a length comparator﹑Reading parts for length measuring machines and tool microscopes, etc﹐Or as a coordinate boring machine and coordinate grinding machine positioning parts﹐It can also be used alone to measure smaller sizes﹐For example, line spacing﹑Indentation diameter in hardness test﹑Crack and hole diameter, etc。Its index value is10micron﹑1Micron sum0.5micron。 The principle of subdivision is different﹐Reading microscopes are usually classified as direct reading﹑Marking shift
2015-01-11 Reading quantity 2804
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