
Practical Balancing of Rotating Machinery.
Title:
Practical Balancing of Rotating Machinery.
Author:
Norfield, Derek.
ISBN:
9780080459387
Personal Author:
Edition:
1st ed.
Physical Description:
1 online resource (228 pages)
Contents:
front cover -- copyright -- table of contents -- front matter -- About the author -- Preface -- body -- 1 Introduction -- The first machines a brief history -- The need for balancing -- The industrial revolution -- The history of balancing -- Why do we balance? -- Balancing is not an additional expense! -- Vibration, causes and effects -- Simple vibration -- Complex vibration -- Damping -- Why is vibration so bad? -- What is the cause of vibration? -- Misalignment -- Damaged bearings -- Bent shaft -- Turbulence -- Hydraulic (or aerodynamic) unbalance -- Cavitation -- Oil whirl -- Looseness -- Bearing lubrication -- Worn or damaged gear -- Unbalance -- 2 Eliminate unwanted motion! -- Introduction -- How do we do that? -- Balancing is Science, Technology and Art -- What is the cost of balancing a rotor? -- What are alternatives to balancing? -- What is the benefit of proper balancing? -- Unbalance is not good for my product! -- How do we implement the program? -- Mission possible -- Sir Isaac Newton -- Newton's first law -- Newton's second law -- Newton's third law -- Energy balance -- Baseball -- Golf -- Rotary motion -- Know your forces -- Inward or outward? -- Flying free -- Which direction? -- Bearing load -- Acceleration -- Moment of a force -- Moment is a vector quantity -- Relation of force to balancing -- The cost of increased performance -- Balance tolerances and performance -- Unbalance and speed -- Centrifugal force -- Unbalance and speed -- Unbalance defined -- Everything together -- Correcting unbalance. How do we do that? -- 3 The balancing process -- Overview of real balancing tolerances -- Summary -- Rotor unbalance defined -- Specific unbalance -- Sources of unbalance -- Force, unbalance and speed -- How to balance? -- What is balancing? -- Rotor balancing -- Rotor axes -- Review definitions -- Mass axis -- What is a micron?.
Balancing defined -- Force/vibration -- Rotor rigidity characteristics -- Static unbalance -- Couple unbalance -- Dynamic unbalance -- Measurement and correction -- Single unbalance - 1 -- Single unbalance - 2 -- Single unbalance - 1a -- Single unbalance - 2a -- Two unbalances -- Vector addition -- Unbalance in two planes -- Unbalance outside the bearings -- Getting to be too much? -- Plane separation -- Machine setup -- Balancing machine basics -- Measure, then correct unbalance -- Correction -- Correction, 3 ways -- What are the limits? -- Noise is the limit -- Noise signature -- The right tolerance -- Standards again -- ISO 1940 -- Example grades -- Getting at the numbers -- API 610 -- Fundamentals of balancing -- The importance of ANGLE -- Phase error -- Phase shift -- Correction efficiency -- Unbalance vector -- Angle error chart -- Correction ratio -- Why not 'zero' -- Measuring errors -- Correction error -- Plane separation -- Is the process in control? -- Process parameters -- Gage R&R -- Cpk -- Balancing efficiency -- Balancing machine testing -- How to be sure your machine does what you need -- Balancer specifications -- Test requirements and specifications -- Balancing machine types -- 1. Horizontal or vertical orientation of the rotor axis -- 2. Soft bearing or hard bearing -- 3. Single or two plane -- 4. Single plane balancers -- Unbalance correction -- In place balancing -- In place balancing procedures and pitfalls -- Active balancing -- 4 Tooling and production -- Balance tooling -- Like the care and feeding of monkeys -- Tooling solutions -- Simple tooling -- Mechanical expanding tooling -- Hydraulic expanding tooling -- Diaphragm type tooling -- Production tooling -- A closer look at tooling -- Expanding tooling (production application) -- Selection of tooling -- Runout compensation -- Graphic representation - 1.
Graphic representation - 2 -- A quick review -- Other types of tooling -- More tooling -- Machine tool cutter balancing -- Vertical spindle balancer -- HSK tooling -- Index.
Abstract:
Rotating machinery (eg pumps, motors, compressors) is normally manufactured to precise measurements but there comes a point when the costs of manufacture mean that further precision is not cost-effective and thus any slight imbalance inherent in the machine will need to be attended to after manufacture. When such machinery is in operation, often at very high speeds of thousands of revs per minute, any imbalance will set up vibration and often noise. In addition, such imbalance will cause extra wear and loss of efficiency in the machine. The answer is to balance the affected parts of the machine so that it operates smoothly and efficiently. This book is a practical account of such balancing techniques e.g how to balance a rotor, how to set up and verify performance of a balancing machine, and procedures for on-site balancing. In addition, other common causes of vibration will be covered e.g. misalignment, bad bearings and looseness. This book is the distillation of a successful course run by the author and developed over 20 years. University engineering departments do not teach balancing techniques beyond the very basic, and there is a need for educators and engineers to have a practical book available on the topic. · A practical book which will help the reader understand the importance of balance in today's high technology world · Outlines the history of dynamic balancing and other vibration reduction techniques · Profusely illustrated throughout.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
Genre:
Electronic Access:
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