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Chirag

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Chirag

Chirag is a Lean Manufacturing Engineer who has been in the tech industry his entire career. He is the founder of Lookmanufacturing and he is passionate about the development trend of the industry. That is why he created this Industry and design blog.

Industry

Cost and Quality Controls for China Mold Manufacturers

by Chirag March 14, 2018
written by Chirag

Creating molds for manufacturing takes different forms. The most popular form of molding at present is injection molding. Controlling the costs of creating the molds and the pricing for customers to purchase custom molds for their products is a challenging part of business. Mold manufacturers; such as those at Sositar Mould Co. and Eco Molding Co. in Shenzhen, China; control costs in several ways, such as mold design, materials, and machining.

Mold Design

Experience in mold building is very important. Companies that have experienced mold designers are more likely to be able to produce quality molds at reasonable prices4. Experienced mold designers know the best material to use and what is possible when designing a mold. Quotes for custom molds can be more precise with experience and save customers money, as well as save production costs for the mold manufacturer.

An experienced design team will provide quality industrial, appearance, and structure design. The design teams will also provide excellent mold design and mold flow analysis. In-house design molding can also save time and production costs for the mold manufacturer and customers. Quality mold design helps control costs by avoiding retooling and product waste, saving money and time.

Materials

The materials used to build the molds is as important as the design of the mold. Use of subpar materials in the mold can lead to unsatisfactory results in the product output. Many factors determine the best choice for building a mold. For instance, the number of parts to be produced. The fewer the parts, the less time the mold will be used. In this case a softer, less expensive steel can be used to build the mold 1.

Choosing the proper type of steel when building a mold not only ensures a quality mold, it can also save time and money. Use of steel from quality suppliers in countries like Sweden, Japan, America, France, Germany and China help mold manufacturers ensure the quality of the mold and the customer’s product3. As with quality design, the use of quality materials to build molds lowers costs by lowering the probability of producing bad parts and avoiding waste and lost time.

Image result for doctor blades

Machining

Mold manufacturers mainly use two types of machining to build a mold, CNC machining and EDM machining. CNC machining is the standard form of machining used to build a mold. A CNC machine uses CAD (computer aided design) software to instruct the CNC machine on how to cut the steel and form the mold.

EDM (electrical discharge machining) uses an electrode made of graphite or copper to obtain the desired shape of the mold 2. The main advantage of this process is that it can create shapes that standard CNC machining is not capable of. EDM can also eliminate additional heat-treating by shaping pre-hardened molds. Sometimes the EDM finish is fine enough to serve as a final part without additional mold cavity polishing.

Image result for edm tooling

A mold built by combining experience, proper materials and machining techniques will not only produce a quality product for the customer, it will also produce more business for the mold manufacturer and help to reduce costs and increase profits. Quality built molds save time and costs, providing mold manufacturers the opportunity to increase sales, profits, and to maintain a reputation as a quality provider of injection molds.

 

Sources

  1. Crescent Industries- http://info.crescentind.com/blog/bid/66085/understand-common-steels-used-in-injection-mold-making
  2. CS Tool Engineering- https://www.cste.com/services/plastic-injection-mold-making
  3. Eco Molding Co., Limited- ecomolding.com
  4. Sositar Moulding Co., Limited- moldchina.com
March 14, 2018 0 comment
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Industry

Is 3D Printing the Future of Manufacturing?

by Chirag February 6, 2018
written by Chirag

The main categories of the manufacturing industry have been the repetitive process, the discrete process, job shops, batch processes and continuous processes. Companies often use more than one of these processes to produce one product2. Depending on the item being produced, production time can range from weeks to months. However, with new technologies such as 3D printing, production times, costs, and product designs have improved recently, and continue to improve. So, is 3D printing the future of manufacturing?

3D Printing vs the Processes

Many companies use a combination of processes to produce their products. The repetitive process is usually a production line that produces the same product over and over, with relatively little change in line setup or changeover. The discrete process also uses production lines; however, the products are more diverse and the line setup can change frequently. Job shops usually have production areas instead of production lines, where one or more versions of a product are assembled2.

3D Printing vs the Processes

In each of these processes setup, changeover, and tear-down take time and cause downtime during production. 3D printing can greatly reduce costly time loss due to these process activities. With 3D printing, losing time to setup and changeover is almost eliminated as changes in the product are made by changing the program in a CAD or other computer system. There is no need to retool or change the machinery. The ability for quick changeover or product design changes also shortens costly downtime5.

For instance, using 3D printing can cut production time of jigs and fixtures by ¼, and is less expensive to create complicated designs5. 3D printing also allows a company to create and test parts before running a large production batch. 3D printing also provides the ability to start new production without the need to wait for time-consuming and costly tooling necessary with conventional manufacturing. Cost cutting and shortening time constraints could be positive aspects pushing 3D printing to be the future of manufacturing5.

3D Printing, Design, and Prototyping

With traditional manufacturing, design is limited to the abilities of the machinery producing the product. With 3D printing, design is virtually limited only by the designer’s creativity. 3D printing allows for greater flexibility and intricacy in the design of products. Changes in how products are structured can be achieved with 3D printing, allowing for more complex and stronger products made with less material1.

3D Printing vs the Processes

Prototyping also benefits from 3D printing. Prototypes can be made more quickly and less expensively with 3D printing. Different versions of a prototype can be created to test the best design and save time on testing and retooling of the prototype to get the most viable product. Advancements in the ability to create prototypes and more intricate designs while shortening time frames and lowering costs make 3D printing a big part of the future of manufacturing1.

3D Printing and Production Size

Manufacturers usually run large quantities of their products to lower the cost of production. Tooling, setup, and changeovers raise costs for smaller runs of a product. With 3D printing a company can run a small batch of a product without the higher costs and time it takes to run small batches with traditional machining. For instance, more than 60% of manufacturers believe that 3D printing will become a way to produce obsolete or older replacement parts within the next 5 years. Also, over 50% believe parts needed after a product goes to market will be produced using 3D printing within the same time frame4. Small runs of specialized products are also more cost and time effective with 3D printing, therefore, products with a smaller consumer target will be more attractive to manufacturers.

3D Printing vs the Processes

3D Printing and Materials

The traditional form of most manufacturing is known as the subtractive process, or removal of material by cutting it away to form the finished product. With this method of production, material waste can be 50% or more. Often the waste material is either disposed of or recycled. 3D printing is an additive process, or material is added in a layering process that eliminates most material waste. For example, creating a product using a metal like aluminum and the subtractive process can leave as much as 60% of the material as scrap3. This scrap then must be recycled or discarded. 3D printing uses the minimum amount of material and practically eliminates the need to melt down and recycle any wasted material.

3D Printing and Supply

A large part of traditional manufacturing is supply and inventory. Ensuring that the necessary parts for production, assembly, and machine tooling and maintenance are available is important to keep the process moving. Warehousing and inventory control are necessary for many industries. 3D printing can eliminate much of the need for warehousing extra parts and materials. 3D printing also cuts back on the amount of inventory as orders can be filled and shipped as they come in rather than in larger batches.

3D Printing vs the Processes

3D Printing and Customers

With traditional manufacturing, the time from sales to delivery can take weeks or months. Machine tooling, material ordering, and design changes take time. With 3D printing and the elimination of tooling and changeover times, this period can be shortened to days or less than a couple of weeks. Material costs can also be lessened as 3D printing uses less material than regular manufacturing. Quicker turnaround time and lower costs make for happier and more satisfied customers.

3D Printing and Customers

3D Printing as the Future of Manufacturing

There are aspects of 3D printing that are considered barriers to manufacturers choosing 3D printing as their main form of production. Some manufacturers consider the cost of the printers and uncertainty of the final product to be reasons to hold off on embracing 3D printing. Some manufacturers, approximately 22%, believe 3D printing will disrupt existing supply chains4. Although 3D printing is not ready for mass production and still too expensive for certain business owners or applications, the technology continues to improve and costs to go down.

If 3D printing is the future of manufacturing it is because of the benefits gained in prototyping and design, and savings in time, materials, and other costs. The 3D printing industry grew more than 17% in 20161. Some manufacturers see barriers to the use of 3D printing as the standard for manufacturing. However, others believe that ignoring how 3D printing can benefit the manufacturing process can lead to competitive losses to those who do embrace the new technology, now and in the future.

 

Sources

  1. Business News Daily- https://www.businessnewsdaily.com/10380-3d-printing-in-manufacturing.html
  2. Machine design- http://www.machinedesign.com/contributing-technical-experts/5-types-manufacturing-processes
  3. MBT- https://www.mbtmag.com/article/2016/01/how-3d-printing-will-impact-manufacturing-industry
  4. PWC- https://www.pwc.com/us/en/industries/industrial-products/library/3d-printing-comes-of-age.html
  5. com- http://www.stratasys.com/solutions/additive-manufacturing
February 6, 2018 0 comment
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Lean Manufacturing
Uncategorized

To Understand The Core of Lean Management: Back To The Roots

by Chirag January 8, 2018
written by Chirag

Lean is a phenomenon, a mindset a mission statement. Many economic sectors establish the methods and procedures and are aware of the positive effects. But what is the core idea and how did it all start? For some readers of this blog, Lean Management may be new territory. Therefore today a little digression back to the roots of the methods and the pioneers.

Toyota did it

Lean management is an idea that has its origins in Japan in the 80s. The model used was the new serial production of Henry Ford, who laid the foundation stone with his T-model. The production manager Taiichi Ohno was one of the first entrepreneurs to recognize these benefits, optimized them and developed a holistic manufacturing system. In the 1990s, lean knowledge spread to other parts of the world and was constantly evolving.

This TPS-known Toyota production system has always been the cornerstone of lean management.

But what are the factors that make this system so successful?

The core idea behind the mindset often takes a back seat for many companies that want to establish Lean Management today. You lose yourself in the methods and individual measures and run after the efficiency increase, without noticing that you have lost the ultimate goal completely out of sight.

Lean Management

Many experts define three basic pillars of an ideal factory that make up a production system. At these construction sites, we must orientate ourselves to achieve the ideal state.

1. Stability in the production processes

Where there are no fluctuations and failures, ideal conditions prevail.

2. As short set-up times as possible
The more frequently a machine has to be retrofitted, the more expensive the single article becomes.

3. As much capacity as possible
Every production manager dreams of having as many halls, machines, employees and shifts as possible and never again bottlenecks.

The tools of Lean Management basically all focus on optimizing these three pillars, the overall system.

Map value stream and recognize waste as a key factor of lean management

The idea behind the fundamental optimization of the entire system runs through the sustainable elimination of waste, in Japanese, it is the “7 Mudas”. They are the key to continuous improvement and increasing efficiency along the value chain. So, if you examine all parts of your value stream and consistently eliminate all non-value-added activities, then this is the first step towards holistic lean management.

Business technology concept as two hands holding a group of machine gears shaped as a human head as a symbol and metaphor for the transfer of industry information or corporate training.

 

Crash Course Lean Tools: The most important lean principles for your success

The global benchmark for lean production was and is the TPS Toyota production system. But in theory, lean is understood quite quickly. Only the methods are not always 1: 1 transfer to your own company, it depends on the interaction of the individual methods.

January 8, 2018 0 comment
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Lean manufacturing
Uncategorized

Toyota’s Lean Management Over Time: The Past and Present

by Chirag January 6, 2018
written by Chirag

Looking Back: How has Lean Management become what it is today?

When Henry Ford introduced the development of the T-model at the beginning of the 19th century, he probably would not have thought that he laid the foundation for today’s production optimization. In order to meet the high demand, he unified the manufacturing processes at that time and was the first company to introduce the mobile assembly line. Ford became a pioneer in mass production, and the T-model he built was soon the world’s best-selling car.

Toyota followed the pioneer: Checking at Ford allowed!

When the Toyota Motor Company was founded in Japan in 1937, it was still a long way from the standardized processes that had been common practice in the US for many years. The CEO of Toyota, Ejii Toyoda and the production manager, Taiichi Ohno, made in 1956 during a visit to the Ford Motor Company a picture of the production processes. They had already developed their own system, Kanban, in which they wanted to include elements of Ford.

Until the 1980s: Toyota created its own production system.

In contrast to the original concept at Ford, Toyota’s production system has produced smaller sets of parts in series. This system has the disadvantage that a missing component in the chain would have far-reaching consequences for the whole process. In order to meet the new requirements with larger production volumes and limited space, Toyota developed the Kanban method over time and introduced just-in-time processes.

 

The theory also reached Europe in the 1980s

 

Just-in-time production and Kanban: Introduction at Toyota company-wide.

Kanban is a method in which production processes are depicted as a self-contained cycle. Automatic information is provided by the consumer to the supplier as soon as a certain quantity of a material has been consumed so that it can be replenished immediately and no bottlenecks occur. The information is in the form of a card, the so-called Kanban card. The advantage is that there is no excessive inventory. All resources are used efficiently and a holistic approach is created. Toyota has thus reformed production processes company-wide, including the involvement of suppliers.

Masaaki Imai’s book “Kaizen: The Japanese Key to Success” (1986) brings the theory of continuous improvement to Europe in 1986. The Japanese is the founder of the Kaizen Institute, which supports companies in implementing and introducing Lean and Kaizen processes. “Kai” means “change”, “Zen” literally means “good / better”. Also, Toyota’s production manager, Taaichi Ohno, summed up his experience to create a book, “The Toyota Production System.” Both contributed to spreading theories further in Europe. This was followed by James P. Womack / Daniel T. Jones / Daniel Roos, “The Machine that Changed the World”, New York and numerous other publications on lean management. It is estimated that between 1990 and 2010 about 700 publications were added, which illustrates the importance of philosophy for the production processes today.

Dissemination of process improvement even outside production.

Since the beginning of the 21st century, the application is also found in administrative areas. It has been recognized that Japanese philosophy provides added value that should be extended to all business sectors. This is the only way to pass on the methods and values to all employees and to profit from the advantages in their entirety.

January 6, 2018 0 comment
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Automation

Robot Colleague: With Automation in Manufacturing and Construction, A New Era is Dawning

by Chirag December 27, 2017
written by Chirag

Since the beginning of the industrial age, designers and engineers have continuously pushed to the limits of the feasible.

In the past, the conversion of good ideas into marketable products often failed due to the fact that there were no production facilities either at home or abroad.

The rapid progress in areas such as robotics, automation of manufacturing processes, 3D printing, generative design and real-time response to user feedback promises significant relief in the near future. Machines are becoming more and more adaptive, computers more and more powerful, and robots are increasingly becoming competent and intelligent workers.

Specifically, a division of labor between man and machine can be expected: The engineers of the future can give free rein to their creative drive in optimizing their designs. These are then analyzed by robots and implemented as assemblies of 3D printed parts. As utopian as this idea may seem at the moment, within the next ten years it will probably be within reach.

What are the consequences of increasing automation for civil engineers and mechanical engineers? Will it destroy jobs or open up new perspectives?

My answer to these questions is: The robots do not want us to do anything wrong – quite the contrary. They are laying the groundwork for an industrial revolution that will allow more creative and (in both senses of the word) customer-centric manufacturing.

New challenges and opportunities

Currently, designers and engineers have yet to use CAD software to create geometries to verify the practical feasibility of their ideas. In the future, they may be spending their time more reasonably analyzing and creating the problem representation that computers use to calculate new geometric options and help human colleagues develop and improve their designs. At the same time, this will increase the problem potential and create new challenges and opportunities.

Take the example SpaceX. After repeated crash landings, the California space company successfully retrieved two rockets from space in the spring of 2016 and safely landed them on a floating platform in the Atlantic. Imagine that at the beginning of the project the engineers had entered the appropriate parameters in a tool like Autodesk Dreamcatcher. Imagine that the missile-mounted sensors for detecting landing gear loads, hydraulic failures, and other engineering malfunctions could relay the data to the software in real time, thereby realizing rework within a very short time. The computer would then be able to propose better and cheaper options that the engineers might not have come to. Problem solving would no longer be a punctual and static process, but a constant dynamic convergence loop between planning, production and application.

For structural engineers and machine builders, too, generative design and automation of modular and prefabricated construction methods open up new possibilities for solving complex problems. As production and construction converge, components and functional units (including retaining walls, pipe bridges, and curtain walls) are increasingly prefabricated in factories. Thus, civil engineers have their heads and hands free to tackle new, more complicated challenges.

So rosy prospects for highly qualified designers and engineers. But what about factory and construction workers? They will have to adapt to the new realities, be it through retraining for more demanding jobs or moving to growth sectors such as health or education or renewable energy. Robots will replace human labor primarily in areas where monotonous, risky or even impossible tasks are required. In other words: Overall, the foreseeable consequences of automation and robot support are to be evaluated positively.

Meanwhile, there are signs in the US that the end of the flagpole could be reached in terms of emigration and loss of jobs in manufacturing – once the most important pillar of the US economy. Automated factories and innovative companies that specialize in custom-made products are the forerunners of this change.

Adidas Speedfactory robot

At Ansbacher Speedfactory from Adidas, robots accelerate production. Courtesy of Adidas.

Short ways, needs-based production

Automation makes it possible: In the future, goods can be produced at affordable prices in the immediate geographic vicinity of consumers. As a result, more and more manufacturing companies will return to countries that are still dependent on imports from manufacturing meccas such as China.

The renowned Wall Street Journal is also assuming that the advancing automation will prove to be a competitive advantage, especially for small and medium-sized companies. Thanks to the active support of robots, “smaller manufacturers could compete with the large corporations at eye level”. Especially in countries with higher labor costs can be achieved by the use of industrial robots significant savings.

In 2014, the lion’s share of global demand for industrial robots came from five countries: China, Japan, the US, Korea and Germany. However, the race to catch up has long since begun, and in the near future more and more companies around the world will be automating their production facilities to meet demand in their own markets.

The importance that the manufacturing industry once claimed in Western countries, will probably never reach again. However, it is not unthinkable that automation will lead to a renaissance of the manufacturing industry and thus to the creation of new jobs. Because the resulting efficiency gains on the one hand enable the relocation of production sites to the sales countries and on the other hand, the emergence of novel manufacturing branches that specialize in the production of customer-specific products.

For example, under Armor in Baltimore is working flat out on realizing its “Project Glory” concept to promote short-path manufacturing that combines global thinking with local action in an exemplary way: US-made products for US consumers , Brazil-made products for Brazilian consumers, etc.

Similarly, Rickshaw Bags in San Francisco has written an on-site production tailored to individual customer requirements. And at the Speedfactory, which Adidas opened in Ansbach, Germany, in May 2016, robots are to increase the sales rate and sales on the local market by means of tailored production and personalized custom-made products.

Big Bang of creativity

Can the same principles be applied to more complex industrial goods – for example, by using automation techniques such as 3D printing and generative design to rapidly develop and manufacture sophisticated equipment to customer specifications? The consequence would be that more engineers will reach out to a broader range of ideas, experimenting to their heart’s content, and assuming responsibility for making feasible decisions. Because the less time they have to spend on planning and design, the more thoughts they can think about conceptual issues.

I assume that the job prospects for engineers tend to improve with increasing automation. The resulting expansion of what is feasible not only means a broader offering for clients and end users, but also opens up opportunities for more specialists with appropriate training and qualifications to fill emerging niches. In this development, we owe such cool inventions as the climate-positive house of the Australian architectural firm ArchiBlox or the “Taga” folding wheel, from which a child’s buggy can be made in a few simple steps.

Given these diverse opportunities to develop novel products for efficient and cost-effective manufacturing in automated factories, (not only) production engineers are facing exciting times, especially as robots are capable of producing things that people could previously only dream of.

Automation will also lead to mass production becoming a phase-out model. At most global market leaders such as Nike and Mercedes will still be able to generate cost advantages through large-scale production. In concrete terms, this also means that skilled workers are needed for the planning and realization of more sustainable – that is, smaller and more compact, but more efficient factories.

No matter if they put their ingenuity into the service of a large corporation or a start-up – in any case, the engineers of the future will have much more room for thought and experimentation. In a world where robots do the hard work, there are hardly any limits to human imagination.

December 27, 2017 0 comment
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