from design to site management

... 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 component manufacturing and assembly costs in the early stages of the design ... relating tolerances to characteristic dimensions To provide for the second point, techniques are put forward that can be used to estimate the costs of component manufacture and assembly for concept designs

Ngày tải lên: 21/07/2014, 16:21

... emerging design or prototype Any conflict between customer needsand 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 ... and a listof areas where future work might be usefully directed Trang 11Design considerations are provided to enable the designer to understand more about thetechnical feasibility of the design

Ngày tải lên: 11/08/2014, 23:23

... controlled by operator . Roll forging: reduction of section thickness of a doughnut-shaped preform to increase its diameter.Similar to ring rolling (see 3.2), but uses impact forces from hammers . ... Minimum corner radii¼ 1.5 mm . Machining allowances range from 0.8 to 6 mm, depending on size . Drafts must be added to all surfaces perpendicular to the parting line . Draft angles ranging 0–8
, depending ... open sections . Section profile designed to increase assembly efficiency by integrating part consolidation features . Grooves, holes and inserts not parallel to the axis of extrusion must be

Ngày tải lên: 11/08/2014, 23:23

... 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, mechanizedtool loading, automatic ... respect to material to be machined is important . Drills may require chip breakers for ductile materials to efficiently remove swarf from cutting area . Coolant also helps flush swarf from cutting ... reduced to a minimum (for simplicity and lower cycle time).. Fillet corners and chamfer edges where possible to increase tool life . Holes should be drilled with a standard drill point at the bottom

Ngày tải lên: 11/08/2014, 23:23

... 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 ... considerations . 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 ... rates from 0.2 m/min for manual welding to 15 m/min for automated setups Production costs reduced by high weld deposition rates with continuous operation Well suited to traversing automated

Ngày tải lên: 11/08/2014, 23:23

... can be reduced by designing symmetry in parts to be welded along weld lines . The fabrication sequence should be examined with respect to the above . Design parts to give access to the joint area, ... typically Economic considerations . Weld rates vary from 0.4 m/min for manual welding to 3 m/min for automated systems . Alternative to TIG for high automation potential using key hole mode . Welding ... RSW and RSEW (up to 3:1 thickness ratio) . ESW applied to sheet thicknesses of same order from 25 up to 500 mm using several guide tubesand electrodes in one pass, but down to 75 mm for a single

Ngày tải lên: 11/08/2014, 23:23

... 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 ... 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: 11/08/2014, 23:23

... was close toAhab’s palace Ahab wanted to buy it to use as a vegetable garden, butNaboth refused to sell: Ahab became angry and sullen, refusing to eat,but at least his first impulse was to obey ... need to carry that pur-pose to its next stage of development He urged them to be strong, toobey all that was written in the Book of the Law of Moses, and not tointermarry with other nations or to ... happened to be a member of the oppositegender There are a lot of lessons in this story for today’s business leader ❖ Job had more troubles than any modern corporate executive, yet he stuck to his

Ngày tải lên: 05/04/2021, 00:24

... period from the idea for the project to the invitation to tender usually requires one to three years Owing to diffi culties in the fi eld of research and development or problems arising from political ... point It is essential to reach it as quickly as possible and to expand the net income area as much as possible 13 Process Plant Design Project Management from Inquiry to Acceptance Frank Peter ... operator ’ s costs and revenues from the sale of the product over a period of time The aim is to reach the so - called break - even point , i.e the point at which total costs are equal to total

Ngày tải lên: 02/04/2014, 16:25

... and skills) needed to meet product or customers’ needs, structural capital (organizational capability to respond to market demands) and customer capital (the strength of a customer base) The availability ... term ‘proctorment’ (proctoring, proctorship) or some other non-gender terminology that connotes management activities may overcome some of the contextual problematic ‘Proctor’ has historically ... KNOWLEDGE Plato (1953) first defined concept of knowledge as ‘justified true belief’ in his Meno, Phaedo and Theaetetus Plato’s (1953) concept was debated from Aristotle (1928), a student of Plato, through-out

Ngày tải lên: 24/01/2014, 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 ... 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 ... Analysis Computer-aided Design Design for Assembly Design for Manufacture Design of Experiments Failure Mode and Effects Analysis Product Design Specification Product Introduction Management Process ... 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...

Ngày tải lên: 20/01/2014, 00:20

... 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 ... Working together Manufacturing Breakthrough, March/April 1992 1.26 TRW (2002) Product Introduction Management (PIM) 1.27 Parnaby, J (1995) Design of the new product introduction process to achieve ... 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,...

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 ... with RSW and RSEW (up to 3:1 thickness ratio) ESW applied to sheet thicknesses of same order from 25 up to 500 mm using several guide tubes and electrodes in one pass, but down to 75 mm for a single...

Ngày tải lên: 21/07/2014, 16:21