Tool Approach Directions for Machining Protrusion and Depression Features in an Object

Author(s):  
Chandrasekhar Karra ◽  
Thomas A. Phelps

Abstract The success of any industry in today’s highly competitive market is largely dependent on its ability to produce quality products, quickly and at low cost. Evaluating the effect of a product design on its manufacture is crucial in developing efficient designs. Any potential manufacturing problems detected at this stage can be corrected by modifying the design, leading to shorter product development cycles and lower production costs. This paper presents an algorithm to determine feasible tool approach directions. The algorithm is based on detecting if any part of the object obstructs the tool path. The basis for the algorithm is determining feasible approach directions and clearances around a planar polygonal face. The algorithm is applicable to both protrusions and depressions. The information is useful in performing manufacturability analysis of designs and develop process plans.

2016 ◽  
Vol 12 (8) ◽  
pp. 171 ◽  
Author(s):  
Tawat Payim

<p>This research was aimed to develop the product and packaging label for Kao-Taen (rice cracker) of the agro-group of Kao Kwang Tong sub-district, Nong-Chang district, Uthaithani province. It explored and developed Kao-Taen product using materials within the community, and evaluated the product design and packaging label by specialists. <strong></strong></p><p>The research results suggested the outcome of product development, with Kao-Taen of 3 cm. in diameter and 1.5 cm. thick, the size allows for more convenient consumption by consumers. The design of packaging label in style 3 with mean 4.92 was considered most appropriate. The key factors contributing to the community product development included available materials in the community, community’s self-capability, presentation of community uniqueness, and low cost. </p>


2011 ◽  
Vol 421 ◽  
pp. 625-629
Author(s):  
Ling Liu ◽  
Li Zhang

Because of cam transmited the specificity of force and motion,they are widely used in various machinery campaigns equipment and automatic control device in order to implement the movement of all kinds laws.This article introduced the research status and prospect of plate-type cam.MasterCAM served as a platform,to use their CAD capabilities and a mathematic analytic method to complete the parametric design of non-circular cam curve.Using the solid modeling completed the modeling function of cam.Using CAM functions of MasterCAM completed automatic generation of tool path,virtual simulation process and automatic generation of NC code.The design of the cam and CNC machining,high efficiency,sophisticated features that will help improve the manufacture of the cam quality,shorten product development cycles,lower production costs has a significant role for the formation of industrial scale production has great significance.


Lab on a Chip ◽  
2016 ◽  
Vol 16 (9) ◽  
pp. 1644-1651 ◽  
Author(s):  
G. Birarda ◽  
A. Ravasio ◽  
M. Suryana ◽  
S. Maniam ◽  
H.-Y. N. Holman ◽  
...  

We report an innovative and simple way to fabricate plastic devices with infrared transparent view-ports enabling infrared spectromicroscopy of living biological samples. The main advantages of this new approach include lower production costs and a minimal access to a micro-fabrication facility.


2019 ◽  
Vol 87 (2) ◽  
Author(s):  
Irma Kresnawaty ◽  
Rizki Wahyu ◽  
Ashadi Sasongko

AbstractAmylase is an enzyme that has been widely used as a biocatalyst in foodand bioethanol industries. The availability of thermostable amylase will further expand the market and extend the shelf life of this enzyme. Amylase is produced by amylolytic bacteria using media with high-costnitrogen sources, such as pepton. Black soldier fly (BSF) is a potential source of amylolitic bacteria since its ability to degrade organic matters rapidly. This research aimedtoexploreamylolitic bacteria from the larvae of BSF with highest amylase activity that can be produced using low-cost media. The screening ofamylase activity was conducted by culturing the bacteria on starch containing media.Bacteria with the highest amylase activity were cultured in liquid media with twodifferentnitrogensources (urea and nitrate). Determinations of the optimum pH and temperature for this enzyme activity were carried out in the pH range 4to 7 and temperature 35to 65 ºC. Three amylase-producing isolates were obtained in this study. M1 isolate which has the highest activity was characterized based oncatalase activity and Gram staining. The results showed that the M1 isolate mightbelong togenus Proteussp. At the optimum condition (45ºC and pH 7), amylase activityin nitrate mediawas0.791U/mL, which was about 18-folds higher than that in ureamedia (0,041U/mL). Thus, amylase isolated from BSF larvae can be classified as a mesophilic enzyme and has the potential to be developed commercially at lower production costs.[Keywords:crude extract enzyme,Proteus sp.,thermostable] AbstrakAmilase merupakan salah satu enzim yangtelah digunakan secara luas sebagai biokatalis dalam industri pangan dan bioetanol.Ketersediaan amilase termostabil akan semakin memperluas pasar dan memperpanjang daya simpan enzim ini. Selama ini, produksi amilase dilakukan dengan memanfaatkan bakteri amilolitik menggunakan media dengan sumber nitrogen yang mahal, misalnya pepton. Black soldier fly (BSF) merupakan sumber bakteri amilolitik yang potential karena BSF memiliki kemampuan mendegradasi bahan organik dengan cepat.  Penelitian ini bertujuan untuk mengeksplorasi bakteri amilolitik dengan kemampuan amilase tinggi yang dapat diproduksi menggunakan media yanglebihmurah.Skrining bakteri penghasil amilase dilakukan dengan menumbuhkan bakteri pada media yang mengandung pati. Bakteri dengan aktivitas amilase tertinggi dikulturkan dalam media cair dengan dua sumber nitrogenyang berbeda, yaitu urea dan nitrat. PenentuanpH dan suhu optimum aktivitas enzim ini dilakukan pada rentang pH 4sampai 7 dan suhu 35sampai 65 ºC.Tiga isolat penghasil amilase diperoleh dalam penelitian ini. Isolat M1 yang memiliki aktivitas tertinggi dikarakterisasi berdasarkan uji katalasedan uji pewarnaan Gram. Hasilnya menunjukkan bahwa isolat M1 termasukgenus Proteus sp. Pada kondisi optimum (suhu 45oC dan pH 7), aktivitas amilase pada media nitrat adalah 0,791 U/mL, lebih kurang 18 kali lebih tinggi dibanding aktivitas pada media urea (0,041 U/mL). Dengan demikian, amilase yang dihasilkan oleh bakteri asallarva BSF merupakan enzim mesofilik dan berpotensi untuk dikembangkan secara komersial dengan biaya produksi yang lebih murah.[Kata kunci: enzim ekstrak kasar, Proteussp.,termostabil]


Author(s):  
Ali Shafqat ◽  
Josef Oehmen ◽  
Torgeir Welo ◽  
Pelle Willumsen

AbstractIn the design phase of product development (PD) process, most new products face significant uncertainties and risks. Uncertainty is typically associated with a lack of information, while learning is a process that acquires information. Therefore, learning fast and at low cost decreases the uncertainty and increases the efficiency of the product design phase. This paper investigates the concept of the cost of learning in PD's design phase. Reviewing the literature, we conceptualize the cost of learning and review the learning methods considering three aspects in the design phase of the PD process: (1) costs associated with learning from mistakes and failures, (2) learning methods and (3) categories of learners. This paper thus provides the conceptual foundations for future work to increase the efficiency of the PD process by reducing the cost of learning from mistakes and failures.


2014 ◽  
Vol 8 (1) ◽  
pp. 47
Author(s):  
Nugarhardi Ramadhani ◽  
Sayatman Sayatman ◽  
Rabendra Yudistira ◽  
Anjrah Hamzah

Indonesia is one of the most largest country that is growing and has the potential of creative industries from various fields, one of which is animation and games. The majority of human resources of Indonesia are now advancing animation and games, but is still hampered by the right technology. Stop motion as an animation technique has a difficult position as mastering, this type of animation required technology and craftsmanship, thus it does not attract many people to use this technique. This research will discuss the development of a lowcost stop motion animation with maximum result that aims to support the needs of creative industry in Indonesia. This study is taking a character from ‘Abdi Dalem’; a popular fictional comic series. In Order to reach lower production costs, This research is using comparative study method in regards of low-cost materials and experimental method to determine the most economical post-production process.


2013 ◽  
Vol 29 (1) ◽  
pp. 61-85 ◽  
Author(s):  
Patricia Everaert ◽  
Dan W. Swenson

ABSTRACT This active learning exercise simulates the target costing process and demonstrates how a management theory (goal setting theory) is relevant to a business improvement initiative (target costing). As part of the target costing simulation, student participants work in teams to address a business issue (product development) that moves across functional boundaries. The simulation begins with students learning how to assemble a model truck and calculate its product cost using activity-based costing. Students are then divided into teams and instructed to reduce the truck's cost through a redesign exercise, subject to certain customer requirements and quality constraints. Typically, the teams achieve cost reduction by eliminating unnecessary parts, by using less expensive parts, and by using less part variety. This exercise provides a unique opportunity for students to actively participate in a redesign exercise. It results in student teams creating a wide variety of truck designs with vastly different product costs. The case ends by having a discussion about target costing, goal setting theory, and the implications of the target costing simulation. This simulation contains a number of specific learning objectives. First, students learn how the greatest opportunity for cost reduction occurs during the product design stage of the product development cycle. Second, students see firsthand how design-change decisions affect a product's costs, and the role of the cost information in guiding those decisions. Third, students experience the cross-functional interaction that occurs between sales and marketing, design engineering, and accounting during product development. Finally, this exercise helps students understand the concept of target costing. The simulation is appropriate for undergraduate or graduate management accounting classes. Data Availability:  For more information about this case, contact the first author at [email protected].


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrea Crosino ◽  
Elisa Moscato ◽  
Marco Blangetti ◽  
Gennaro Carotenuto ◽  
Federica Spina ◽  
...  

AbstractShort chain chitooligosaccharides (COs) are chitin derivative molecules involved in plant-fungus signaling during arbuscular mycorrhizal (AM) interactions. In host plants, COs activate a symbiotic signalling pathway that regulates AM-related gene expression. Furthermore, exogenous CO application was shown to promote AM establishment, with a major interest for agricultural applications of AM fungi as biofertilizers. Currently, the main source of commercial COs is from the shrimp processing industry, but purification costs and environmental concerns limit the convenience of this approach. In an attempt to find a low cost and low impact alternative, this work aimed to isolate, characterize and test the bioactivity of COs from selected strains of phylogenetically distant filamentous fungi: Pleurotus ostreatus, Cunninghamella bertholletiae and Trichoderma viride. Our optimized protocol successfully isolated short chain COs from lyophilized fungal biomass. Fungal COs were more acetylated and displayed a higher biological activity compared to shrimp-derived COs, a feature that—alongside low production costs—opens promising perspectives for the large scale use of COs in agriculture.


Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2436
Author(s):  
Abubakar Sadiq Mohammed ◽  
Martina Meincken

Low-cost wood–plastic composites (WPCs) were developed from invasive trees and recycled low-density polyethylene. The aim was to produce affordable building materials for low-cost social housing in South Africa. Both raw materials are regarded as waste materials, and the subsequent product development adds value to the resources, while simultaneously reducing the waste stream. The production costs were minimised by utilising the entire biomass of Acacia saligna salvaged from clearing operations without any prior processing, and low-grade recycled low-density polyethylene to make WPCs without any additives. Different biomass/plastic ratios, particle sizes, and press settings were evaluated to determine the optimum processing parameters to obtain WPCs with adequate properties. The water absorption, dimensional stability, modulus of rupture, modulus of elasticity, tensile strength, and tensile moduli were improved at longer press times and higher temperatures for all blending ratios. This has been attributed to the crystallisation of the lignocellulose and thermally induced cross-linking in the polyethylene. An increased biomass ratio and particle size were positively correlated with water absorption and thickness swelling and inversely related with MOR, tensile strength, and density due to an incomplete encapsulation of the biomass by the plastic matrix. This study demonstrates the feasibility of utilising low-grade recycled polyethylene and the whole-tree biomass of A. saligna, without the need for pre-processing and the addition of expensive modifiers, to produce WPCs with properties that satisfy the minimum requirements for interior cladding or ceiling material.


2014 ◽  
Vol 1061-1062 ◽  
pp. 1233-1237 ◽  
Author(s):  
Pâmela Teixeira Fernandes ◽  
Osíris Canciglieri ◽  
Ângelo Márcio Oliveira Sant’Anna

This paper presents the findings of research exploring how designers could to evaluate and insert sustainability requirements in product design during the initial stages of the product development process. It describes the process of development of the method for sustainability consumable goods based from a literature review and explores its application in the development of packaging for cosmetic. The results show that the use of the method may be a promising solution for sustainable projects, providing the insertion of the reasoning for the inclusion of product development oriented to sustainability as a complement to traditional project requirements that existing in the models of product development.


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