Review file
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This document describes the design and fabrication of a modified split type muff coupling. The objective is to connect or disconnect shafts easily, reduce shock loads, cracking, and the need for keyways when joining misaligned shafts. Team members designed the coupling in 2D and 3D, calculating dimensions like shaft diameter, flange plate diameter, pitch circle diameter, and muff thickness. The project schedule outlines selecting the title, conducting reviews, preparing calculations and models, procuring components, assembly, and report submission.
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This document discusses different types of couplings used to join rotating shafts, including rigid couplings, flexible couplings, and muff couplings. It provides details on the construction and working of bush-pin flexible couplings and clamp couplings. Bush-pin flexible couplings can tolerate some misalignment of the shafts and absorb vibrations. Their design involves calculating the diameter of pins and bushes based on the torque transmitted and permissible stress values. Clamp couplings are easier to assemble and disassemble compared to rigid muff couplings, but are more difficult to balance at high speeds and unsuitable for shock loads.
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1. The document describes a clamp or compression coupling, which uses two halves of a cast iron muff that are bolted together around the abutting ends of two connected shafts. A single key fits in the keyways of both shafts to transmit power.
2. Design considerations for this type of coupling include sizing the clamping bolts to withstand the frictional forces between the muff and shafts, which transmit the torque. The proper bolt root diameter is calculated based on these frictional forces.
3. Tolerances for misalignment are provided by a bushed-pin flexible coupling. It uses rubber or leather bushes around coupling pins to connect two flanged halves with some clearance, absorbing misalignment
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Coupling is used to transmit power from one shaft to another and make permanent or semi-permanent connections between shafts. There are two main types of couplings: rigid couplings which do not allow relative rotation between shafts and must be perfectly aligned, and flexible couplings which allow for some misalignment and protect from vibrations. Examples of flexible couplings include bush pin flange couplings using rubber or leather bushes over pins to absorb shocks, and universal couplings used to join intersecting shafts where the angle may vary.
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Shaft couplings are used to join shafts together end to end when transporting longer shafts. There are two main types of shaft couplings: rigid couplings which connect perfectly aligned shafts, and flexible couplings which connect shafts with misalignments. Rigid couplings include sleeve/muff couplings, clamp/split-muff couplings, and flange couplings. Flexible couplings include bushed pin couplings, universal couplings, and Oldham couplings. All couplings aim to transmit full power between shafts without losses while maintaining alignment and reducing shock.
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3. Tolerances for misalignment are provided by a bushed-pin flexible coupling. It uses rubber or leather bushes around coupling pins to connect two flanged halves with some clearance, absorbing misalignment
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Coupling is used to transmit power from one shaft to another and make permanent or semi-permanent connections between shafts. There are two main types of couplings: rigid couplings which do not allow relative rotation between shafts and must be perfectly aligned, and flexible couplings which allow for some misalignment and protect from vibrations. Examples of flexible couplings include bush pin flange couplings using rubber or leather bushes over pins to absorb shocks, and universal couplings used to join intersecting shafts where the angle may vary.
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นิตยสารสำหรับ ผู้ชายสมัยใหม่
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ในหลายๆด้าน
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Zoo weekly thailand 30 september 2013
นิตยสารสำหรับ ผู้ชายสมัยใหม่
ที่ทำให้เข้าใจผู้หญิงยุคใหม่
ในหลายๆด้าน
อยากเป็นผู้ชายสมัยใหม่
(อ่านเลย) ก่อนจะตกยุค
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Cylinder liners are used in engine blocks to provide a hard-wearing surface for pistons. They are typically made of grey cast iron using a centrifugal casting process where the molten metal is spun at high speeds inside a mold, pushing it evenly against the inner wall. This allows for consistent thickness and prevents impurities from settling in the liner. The manufacturing process involves melting metal, centrifugal casting, boring and finishing steps like honing and grinding to achieve the final dimensions and smooth surface for optimal engine performance.
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Review file
- 1. DESIGN AND FABRICATION OF MODIFIED SPLIT TYPE MUFF COUPLING Team members Dhiwakar.T Pradeep raj.M Praveen kumar.R Sridhara manikandan.M Guided by Mr.sathish kumar
- 2. ABSTRACT • In engineering practice shafts of large lengths are required to transmit the torque which can be obtained by joining two or more shafts in order to obtain the required length. The joining of shafts is done by device is called as coupling. • Split type coupling is used to connect two shafts which are parallel &in alignment. • Normally all couplings are made of Cast iron. • But it withstands the vibration only not heavy shocks and backlash during power transmission
- 3. • To withstand both the vibrations and shocks we have modified them with stainless steel • They have elasticity which can absorb shock and vibrations • The key way in the shaft is also not necessary
- 4. OBJECTIVE OF THE PROJECT • To connect or disconnect the shaft easily from coupling • To reduce the shock loads from one shaft to another • To reduce the crack formation in shafts • To reduce the machining operations(no need of key way cut in shafts) • To rejoin the misaligned shafts together
- 5. WORK DONE SO FAR • Selected the title. • Analyzed the project. • Designed 2d & 3d diagrams. • Prepared the presentation for review
- 8. DESIGN CALCULATION • Shaft diameter = 50mm • Flange plate outer dia=2.4 *D • =2.4 *50=120mm • Inner dia =1.2 *D • =1.2*50=60mm • Pitch circle dia = 1.5* dia • =1.5 *50 =75mm • Thickness =12mm
- 9. CONTINUED…… Muff Design • Length of the shaft =2*D =2*50 =100mm • Thickness of muff =0.2*D = 0.2*25 =10mm • Taper length = 2 Degrees up to total length from center. • Number of flanges =2 no's • Number of sleeve =2 no's DESIGN UNDER RULE OF ISDD =1265
- 10. PROJECT SCHEDULE • 14/12/11 - Selection of Project title • 29/12/11 - Zeroth review • 05/01/12 - Prepared abstract • 12/01/12 - Calculated the dimensions • 19/01/12 - Sketched the two dimensional model • 01/02/12 - Sketched three dimensional model • 15/02/12 - Will buy the components required • 22/02/12 - Will prepare to assemble them • 29/02/12 - Preparing the report • 08/03/12 - Project submission