from design to construction

... www.adc.com THE BOOK ON FROM DESIGN TO DEPLOYMENT: A PRACTICAL GUIDE TO FTTX INFRASTRUCTURE Edited by Steve Grady Forward by Sharon Stober, Editorial Director of Outside Plant Magazine ... optical fiber is deployed all the way to the customer’s premises or location; either to the residence (FTTH - Fiber To The Home) or to a business (FTTB - Fiber To The Business) A Network Interface ... proximity to customer premises Should there be a need for high-speed data, it can be provided from the ONUs to requesting customers The Various Flavors of PON The great promise of PON is the ability to...

Ngày tải lên: 20/12/2013, 22:15

... NP P STEEL (tool, alloy) MED MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK to THICK THIN to to to to to to to to ³19mm £3mm ... the design process is a useful tool to support designing and particularly DFA Considering joining processes prior to the development of detailed geometry enables components to be tailored to the ... THIN MED THICK THIN MED THICK THIN to ³19mm to ³19mm £3mm to ³19mm £3mm £3mm to ³19mm £3mm to ³19mm £3mm 19mm 19mm 19mm 19mm 19mm [S1][S8] NP MEDIUM TO HIGH 10,000 TO 100,000 NICKEL & ALLOYS ...

Ngày tải lên: 20/01/2014, 00:20

... emerging design or prototype Any conflict between customer needs and product functionality should be referred back to the PDS The first step in the process is to analyze the design or prototype ... intention is to promote the generation of design ideas and facilitate the matching and tuning of a design to a process, and The provision of methods and data to enable the exploration of design solutions ... tuning designs for processing many factors need to be taken into consideration The manufacturing PRIMAs presented in this part of the book attempt to provide the knowledge and data required to underpin...

Ngày tải lên: 20/01/2014, 00:20

... NP P STEEL (tool, alloy) MED MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK to THICK THIN to to to to to to to to ³19mm £3mm ... the design process is a useful tool to support designing and particularly DFA Considering joining processes prior to the development of detailed geometry enables components to be tailored to the ... emerging design or prototype Any conflict between customer needs and product functionality should be referred back to the PDS The first step in the process is to analyze the design or prototype...

Ngày tải lên: 02/04/2014, 16:25

... emerging design or prototype Any conflict between customer needs and product functionality should be referred back to the PDS The first step in the process is to analyze the design or prototype ... intention is to promote the generation of design ideas and facilitate the matching and tuning of a design to a process, and The provision of methods and data to enable the exploration of design solutions ... on, through careful design, the fewer the problems that have to be corrected later when they are difficult and expensive to change However, to achieve this, it is necessary to reduce the ‘knowledge...

Ngày tải lên: 03/07/2014, 12:20

... NP P STEEL (tool, alloy) MED MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK THIN MED THICK to THICK THIN to to to to to to to to ³19mm £3mm ... the design process is a useful tool to support designing and particularly DFA Considering joining processes prior to the development of detailed geometry enables components to be tailored to the ... THIN MED THICK THIN MED THICK THIN to ³19mm to ³19mm £3mm to ³19mm £3mm £3mm to ³19mm £3mm to ³19mm £3mm 19mm 19mm 19mm 19mm 19mm [S1][S8] NP MEDIUM TO HIGH 10,000 TO 100,000 NICKEL & ALLOYS ...

Ngày tải lên: 03/07/2014, 12:20

... Pighini, U., Long, W and Todaro, F (1989) Methodical design for manufacture Proc ICED’89, Harrogate, UK, August Woodward, J A and Corbett, J (1989) An expert system to assist the design for manufacture ... Clausing, D (1994) Total Quality Development, ASME Process, New York 1.31 Kapur, K (1993) Quality engineering and robust design Kusiak, A (Ed), Concurrent Engineering: Automation, Tools and Techniques, ... (1977) Cost information for the designer First National Design Conference, London Pahl, G and Beitz, W (1996) Engineering Design: A Systematic Approach, 2nd Edition Design Council, London Farag,...

Ngày tải lên: 21/07/2014, 16:21

... to be presented to the designer In order to make progress it is intended to allow the designer to view the data at different levels of detail, ranging from direct comparisons to detailed elements ... for design advice Within a more proactive DFA methodology, such information needs to be provided to the designer in a transparent and intuitive manner The data should enable the designer to consider ... integration of simultaneous engineering software tools within the design process Design information from application of the tools supplies useful input to the product modeling process //SYS21///INTEGRAS/B&H/PRS/FINALS_07-05-03/0750654376-CH003.3D...

Ngày tải lên: 21/07/2014, 16:21

... is not always necessary to go into great detail Approximate methods are often satisfactory when comparing designs, and it can be helpful if a design is broken down into simple shape elements ... is to enable a product team to anticipate the cost of manufacture associated with alternative component design solutions, resulting from the activities of DFA The technique is currently used to ... the total component manufacturing costs associated with the new design resulting from DFA are less than in the original: this turns out to be the case in many of the DFA studies examined to date...

Ngày tải lên: 21/07/2014, 16:21

... to optimize the fastening of a joint For example, both designs B and C use clips, although design C needs two extra pins to form the joint A possible redesign would be to combine ideas from designs ... set of designs from a case study involving 12 designs from different manufacturers Here three designs from different manufactures are considered The designs incorporate different joining processes ... joining and to support the joining method, two bolts and two nuts to attach the housing and four rivets (and associated spacers) to join the brush plate to the retaining plate The motor as intended...

Ngày tải lên: 21/07/2014, 16:21

... up to four operators could work on the same machine system to create a proportionate increase in production rates The system was designed to enable assembled injectors to be ‘wet tested’ to verify ... allowing it to cool and contract in situ Blind rivets: located into a previously created hole in the assembly from a single direction using a special tool The tool retracts a headed pin from the ... component to locate and hold it to an adjacent face of another component Readily lends itself to full automation Deformation can be performed through direct pressure, rotary or vibratory tool movement...

Ngày tải lên: 21/07/2014, 16:21

... Economic considerations Weld rates vary from 0.4 m/min for manual welding to m/min for automated systems Alternative to TIG for high automation potential using key hole mode Welding circuit ... should be examined with respect to the above Design parts to give access to the joint area, for vision, filler rods, cleaning, etc Sufficient edge distances should be designed for Avoid welds meeting ... jigs and fixtures to keep joints rigid during welding and subsequent cooling to reduce distortion on large fabrications Care needed to keep filler rod within the shielding gas to prevent oxidation...

Ngày tải lên: 21/07/2014, 16:21

... clean and free from moisture to prevent weld contamination Weld ideally left to cool to room temperature to allow the slag to peel off Welding variables automatically controlled Monitoring of welding ... weld, i.e intermittent runs and simple or straight contours, although TIG is suited to automated contour following Design parts to give access to the joint area, for vision, electrodes, filler rods, ... Weld rates vary from 0.2 m/min for manual welding to 1.5 m/min for automated systems Automation is suited to long lengths of continuous weld in the same plane Automation is relatively...

Ngày tải lên: 21/07/2014, 16:21

... brittle materials Complex cavities Coining operations Design aspects Limited to shape of tool and control in 2-dimensions Tool and tool holder designed with mass, shape and mechanical property ... limited only by ability to produce tool shape Can be used for material susceptible to heat damage Suitable for small diameter, deep holes with length to diameter ratios up to 50:1 Suitable for parts ... be programmed to produce the desired pattern Suitable for small diameter, deep holes with length to diameter ratios up to 100:1 Possible to machine thin and delicate sections due to no mechanical...

Ngày tải lên: 21/07/2014, 16:21

... quantities Tooling costs are low to moderate Equipment costs are moderate to high, depending on degree of automation Direct labor costs ranging from high to low, depending on degree of automation ... only by ability to produce tool shape Traveling wire EDM limited to 2-dimensional profiles Suitable for small diameter, deep holes with length to diameter ratios up to 20:1 Can be up to 100:1 for ... appropriate cutting tool material, coolant/lubricant, depth of cut per tooth and cutting speed with respect to material to be machined is important Coolant also helps flush swarf from cutting area...

Ngày tải lên: 21/07/2014, 16:21

... dedicated tooling Production volumes are usually low Can be used for one-offs Tooling costs are moderate to high depending on degree of automation (tool carousels, mechanized tool loading, automatic ... stepper motors Extensive range of cutting tool geometries and tool materials available Economic considerations Production rates ranging 1–100/h Lead times vary from short to moderate ... parts) and turret lathes (limited to standard stock material) Automatic machines: fully or semi-automated Follow operations activated by mechanisms on the machine Automatic bar machines: used mainly...

Ngày tải lên: 21/07/2014, 16:21

... dedicated tooling, 10 000þ Economical quantities can range from for blanking and piercing to 2000 for fine blanking Tooling cost moderate to high, depending on process and degree of automation ... material from a blank, for example, a hole Blanking: parts are blanked to obtain the final outside shape Fine blanking: uses special clamping tooling to produce a smooth and square-edged contoured ... commonly used to improve finish Surface roughness ranging 0.4–6.3 mm Ra Achievable dimensional tolerances ranging Æ0.13 mm–Æ0.25 mm up to 25 mm, Æ0.45 mm– Æ0.78 mm up to 150 mm Wall thickness tolerances...

Ngày tải lên: 21/07/2014, 16:21

... requires the preparation of stock material to remove surface oxides before processing Maintenance of rolling temperature dictates quality Too low and becomes difficult to deform Too high and surface ... Minimum corner radii ¼ 1.5 mm Machining allowances range from 0.8 to mm, depending on size Drafts must be added to all surfaces perpendicular to the parting line Draft angles ranging 0–8 , depending ... used to load the mill Blooms are used to produce structural sections (beams, channels, rail sections), slabs are used to produce flat products such as sheets and plate, and billets are rolled into...

Ngày tải lên: 21/07/2014, 16:21

... 1000, but better suited to very high volumes Tooling costs moderate to high Equipment costs moderate to high, especially for full automation Direct labor costs low One operator can manage several ... economical in small batches of 10–1000 Tooling costs low to moderate, depending on complexity Equipment costs low to moderate, but can be high if automated Labor costs low to moderate Finishing costs low ... which closes the top and bottom of the parison Hot air is blown into the parison, expanding it until it uniformly contacts the inside contours of the cold mold The part is allowed to cool and is...

Ngày tải lên: 21/07/2014, 16:21

... number to be produced Production volumes low, typically 100þ Can be used for one-offs Tooling costs moderate Equipment costs low to moderate Direct labor costs low to moderate Finishing costs low to ... slurry material The mold is removed from the pattern and baked to remove the moisture The molten metal is poured into the mold and allowed to cool The mold is broken to remove the part (see 1.8F) 1.8F ... Easy to change design during production Suitable for small batches of 100 and medium-volume production Tooling costs low to moderate Equipment costs moderate Direct labor costs moderate to high...

Ngày tải lên: 21/07/2014, 16:21