The Influence of Time

Factors which may have an impact on time as a determining factor might include the market for the end product, its sensitivity to time, the penalties and benefits for delayed delivery, and also the impact on the cost of construction. Construction costs over the long term have increased along with the inflation rate, often influencing the cost of living more than other factors. We have seen the cost of construction components fluctuate more than 100 in less than 90 days. These swings are most...

411The Building Committee

The first thing which must be done by the manufacturing firm is to form a building committee. Upper-level management must be represented, preferably with full decisionmaking and budget authority. This representative may not be the company's eventual project manager (PM) for design and construction, but it must be a person who is strong willed, experienced, and capable of maintaining focus on the big picture. His or her primary responsibilities are to ensure that the design feedback supplied to...

Present Method Layout

Clerk A Receptionist and PBX Operator Clerk B - Pricing Clerk Clerk C - Posting Clerk Clerk A Receptionist and PBX Operator Clerk B - Pricing Clerk Clerk C - Posting Clerk Who Who should do the job is the right person handling it Would it be more logical to give the job to someone else How How is the job being done Can it be made easier Can the job be done better with different equipment, or a different layout This question and answer approach will suggest improved methods Why and what lead to...

286 X 572 X 286 X 572 X 286 X 572 X 286 X 572 X 286 X 572 X 286 X 572 X 286 X 572 X

10V(L p) 10VtL p)' 10' (L p) 10* (L p) 10 (L p) 10 (L p) 10 (L p> > loya pH l< X (L p)> 10 (L p)' 10 (L p) 10 (L p) 10 (L p)' 10> (L p) transitional p. The c used in this table is described in the previous paragraph on end restraints. We are often involved in the design and fabrication of cylindrical structures, used as launch tubes, rocket encasements, or rocket motor cases. The example in Figure 13.28 is for a spherical tank, or bottle. The tensile stress in the outer Fibers of the...

1111 Evolution of Capacity Calculation Methods

Since there are as many different definitions of capacity as there are companies defining it, there have been numerous techniques and tools for calculating and predicting it. Some of these methods have proven themselves more useful than others. Different industries seem to have a preference for a given technique or a type of calculation tool. Initially, a company may choose to predict and or control capacity by the use of the intuitive method. The company will rely on the experience-based,...

174 Tooling

The production of any plastic application requires many difficult decisions. The choice of tooling is one of those areas. It is normally the most expensive part of any application and is filled with pitfalls. It is often said that tooling is the most important part of any plastic project. If the tooling is not right, the part which comes from it cannot be right. The tooling for almost any part design can be designed and built, but the cost may be prohibitive. Undercuts and hard-to-mold areas...

Partis Connected To Negative Of Rectifier

Figure 19.24 Schematic of brush plating method. he repaired, or plating large parts without the need for a large tank and large volumes of plating solution. For example, an entire sports car has been gold plated using this method. To immerse even a smali fender into a conventional gold plating solution would require a plating tank containing hundreds of gallons of plating solution at over 500.(H) per gallon of solution, while with brush plating, the car was plated using only a few gallons of...

2242Hybrid Design

Unlike PWBs, in which all components are individually packaged and then mounted to the board, hybrids use bare dies packaged together in a single hermetic case. A given schematic, with a parts list of needed components, can he built with individually packaged and leaded components mounted on an organic PWB, which provides the necessary routing among components. The same device can be built using hare dies chip components (e.g., capacitors), and thick-film resistors, all mounted to a multilayer...

Be Nominally Concentric With A Uniform Wall Thickness Jacket May Be Elliptical In Free Form Except Opposing Surfaces

LENGTH SHALL BE FURNISHED CONTINUOUS AS SPECIFIED (10 FEET MINIMUM). Figure 7.3 Specification control drawing (SCD) for a high-reflectance silicone cable jacket. Column A in the parts list shows the number of items per assembly, column B is the part number, column C is the item name, and column D is the find number shown in the leader arrows on the drawing. Often it becomes necessary to estimate the cost to produce an item which is not yet fully designed. Such estimates are made from sketches,...

712 Estimate or Proposal Plan and Time Phasing

It seems that there is rarely sufficient time to prepare the manufacturing cost estimate. The customer wants a response within days or even hours after requesting price and delivery, and management must have time to review and approve the cost estimate. This often creates a situation requiring long hours of overtime and much pressure on the estimating team. Temptation is strong to provide expedient answers and estimates that cannot be supported when analyzed in depth by management and...

Break Even Point

(3) (67 ) AXIAL.REMAINDER CS HANDRAIL RADIALS Figure 7.31 Breakeven curve when variable center distance (VCD) inserter is added to Man-U-Sert operation. 7. Make-or-buy plan provides for buying all circuit cards, component parts, wire, connectors, metal chassis, cover, hardware, terminal boards, heatsinks, sockets, lugs, and consumables such as solder, grease and paint. 8. Off-line operations to be performed in house include chassis paint, mark and drill, terminal lug installation on terminal...

1044 Elements and Characteristics of MOST

The time units used in MOST are identical to those used in the basic MTM (Methods Time Measurement System) and are based on hours and parts of hours called TMUs (Time Measurement Units). One TMU is equivalent to 0.00001 hour. The time value in TMU for each sequence model is calculated by adding the index numbers and multiplying the sum by 10. For our previous General Move sequence example, the time is (6 + 6+1 + 0 + 0 + 3 + 0)x 10 170 TMU corresponding to approximately 0.01 minutes. The time...

12 Quality Function Deployment

1.2.0 Introduction to Quality Function Deployment Quality Function Deployment (QFD) is a methodology used by teams to develop products and supporting processes based on identifying the customer needs and wants, and comparing how your product and the competition meet these customer requirements. QFD starts with the voice of the customer. Using all practical means, the team gathers customer needs and expectations. The team has to analyze these inputs carefully to avoid getting caught up in...

About the Contributors

Frank Altmayer President, Scientific Control Laboratories, Chicago, Illinois. Mr. Altmayer began his career as a laboratory technician at SCL, eventually earning his B.S. (Honors) in chemical engineering and M.S. in metallurgy from the Illinois Institute of Technology while working full-time, and advanced to the presidency of the company before becoming its owner in 1986. He continues to head the staff operations of consulting on metal finishing and related problems on a worldwide basis,...

181 Fabrication With Prepreg Broadgoods

The drawbacks of the manual layup approach with broadgoods fabrication have been well recognized for a long time. There has been much work and many millions of dollars devoted to attempting to automate this part of the process 6 . Notwithstanding these efforts, the problem has remained stubbornly intractable and real progress is not likely in the near future though predicting the time scale of innovation is notoriously dangerous. The basic problem is that sticky cloth is an inherently...

Ab G Ab Pa

Where A action distance B body motion G gain control P placement Action distance, A. This parameter covers all spatial movement or actions of the fingers, hands, and or feet, either loaded or unloaded. Any control of these actions by the surroundings requires the use of other parameters. Body motion, B. This parameter refers to either vertical (up and down) motions of the body or the actions necessary to overcome an obstruction or impairment to body movement. Gain control, G. This parameter...

Easy to feed

Figure 21.15 Examples of parts climbing or shingling. From Boothroyd, Assembly Automation and Product Design, Marcel Dekker, NY, 1992. We have not yet reached a point where we need a decision process for automate or conventional build, comparable to make or buy, but it is coming. Meanwhile, whenever the designer encounters a part or an assembly whose repetitive requirements to make or assemble exceeds 200,000 project plan quantity times items per end product , he or she should immediately...

Assembly Processes

20.0 Introduction to Manual Assembly 961 20.1 Assembly Work Instructions 964 20.2 Assembly Operation Sequences 965 20.3 Workstation and Line Layout 971 20.4 Manufacturing Methods Analysis 974 20.5 Principles of Motion Economy 980 20.6 Standard Manufacturing Processes 985 20.7 Special Manufacturing Instructions 987 21. Assembly Automation 989 21.0 Introduction to Assembly Automation 989 21.1 Assembly Machines in the Factory 990 21.2 Basic Automation Concepts 990 21.3 Types of Automated Assembly...