tag:blogger.com,1999:blog-72987924421716433852024-03-14T00:36:44.046-07:00Welcome to JNDC's blogWelcome to JNDC's blog. Inspired by interesting engineering design ideas, events, innovations and observations. Disseminating and sharing our thoughts and passions.JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.comBlogger102125tag:blogger.com,1999:blog-7298792442171643385.post-41382039860157369112014-05-28T02:55:00.001-07:002014-05-28T02:55:50.633-07:00JNDC Achieves ISO 9001:2008 For the 6th Consecutive Year
The Kingston based
engineering design consultancy JNDC Ltd has achieved the internationally
recognised ISO 9001:2008 establishing it as one of the leaders in its field.
The independent assessment
demonstrates the commitment to customer service and quality in delivery.
ISO 9001 was first introduced
in 1987 and requires organisations to demonstrate that they do what they say
they do JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-60488495954558582602014-04-30T01:05:00.002-07:002014-04-30T01:05:39.142-07:00New Employee Caught Sleeping on the JobYou really can't find the staff these days.
Zeus our new employee was so tired that sleep was the only option.JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-67128578751941275682014-04-08T00:53:00.001-07:002014-04-08T00:53:18.149-07:00Manufacturing Aluminium Prototype Parts Quickly Part 3
Carrying on from my last blog, the parts had been machined and all went really well with
that.
After the parts were checked, we sent them off for
polishing. This took about a week to
complete as it is really labour intensive, but as you can see the results are
fantastic, all in the space of two weeks! What do you think?
JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-65863155940999704832014-04-03T06:10:00.002-07:002014-04-03T06:10:16.039-07:00Manufacturing Aluminium Prototype Parts Quickly Part 2
Continuing on from my last blog in March, 'manufacturing aluminium prototype parts quickly'. The 3D printed parts have been
used as masters to make the sand casting mould and they were then sent off for heat treatment.
I printed out two master parts and gave them to the foundry, altogether we ordered 27 parts. It's great that by only printing two
parts in plastic, you can JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-43459270467199683282014-04-01T04:54:00.000-07:002014-04-01T04:54:15.298-07:00Finite Element Analysis to re-engineer a product
JNDC were contracted to check the strength of a seat pad.
A linear static analysis was performed. Two load cases were considered as indicated in BS EN 12520:2010:
A vertical 1600N load 150mm from the centre and 100mm load from the front edge of the pad. Along with a vertical 1600N load representing a pad used in BS EN 12529:2010.
Results Case 1
Von Mises results shows a max JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-12664227490607378892014-03-19T07:49:00.001-07:002014-03-19T07:50:44.871-07:00Manufacturing Aluminium Prototype Parts Quickly
Once again we have the requirement to manufacture low volume
aluminium prototype parts, before commissioning high pressure die casting
tooling.
The part shown below needs to be manufactured within the
week, it has been 3D printed in plastic. The part has been fully engineered for die casting, so drafts, shrinkage
etc have already been considered.
The first step was to print out JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-85255631695499060522014-02-10T05:37:00.001-08:002014-02-10T05:37:43.947-08:00Increasing the Performance of a Composite FlangeRecently JNDC completed an interesting job regarding the redesign of a lamp post flange. The current flange was manufactured in steel or extremely heavy GRP and was causing problems associated with thermal mismatch as well as difficulty in assembly.
Original Lamp Post
Failure of original Flange
The flange, to be designed in composite, had to withstand a 50kNm moment load.
JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-70847808264708948222014-01-31T06:49:00.001-08:002014-01-31T06:49:47.502-08:00Manufacturing in China, second stop Shenzhen - Part 3Shenzhen is situated north of Hong Kong and is a major city in the south of Southern China's Guangdong Province.
Three factories were visited and the overall impression on quality and manufacturing was very good. One in particular stood out with attention to detail
on the quality of tooling design and manufacture. Their approach to supporting the
customer with recommendations to optimisation of JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-12102477147056813082014-01-24T05:02:00.000-08:002014-01-24T05:02:06.851-08:00Factory Visit in Ningbo - Part 2
First stop was Ningbo, a seaport in the northeast of Zhejiang province.
The capabilities of the 1st factory include high accuracy die casting tooling and manufacturing die casting products for industries such as electrical, lighting and automotive.
Selection of die cast products
Manufacture of bbqs
This factory has an excellent record selling 80% of their manufactured JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-84410446406093971092014-01-21T07:26:00.001-08:002014-01-21T07:26:25.978-08:00China Road Trip to Source Manufacturers - Part 1After a long flight from the UK, Dean Carran one of the directors at JNDC touched down in Beijing to start his road trip to source manufacturers for machined metal parts and aluminium castings.
Mongolia from the plane
The itinerary included four manufacturers. One in the city of Ningbo, a seaport city in the northeast of Zhejiang province. Today Ningbo is a major exporter of industrial JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-52755606720031838582013-12-05T05:12:00.002-08:002013-12-05T05:19:11.916-08:00Optimizing the Design of a Pile Driver using Finite Element Analysis
1. Load requirement for Hydraulic Ram = 105kN.
Inputting the hand calculations into FEA the following assumptions were made:
Worst case scenario. A dynamic load equivalent to a force of 35kN on the bottom plate as shown.
Model is fixed halfway along the beam to extract reaction loads.
The weight cradle is held by a hydraulic ram and allowed to slide.
2. Initial calculations show JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-20546754908125415952013-12-04T04:11:00.002-08:002013-12-04T04:11:55.535-08:00JNDC's New Address Details
JNDC have moved, please find below our new address details:
Unit 8, Endeavour House
2 Cambridge Road
Kingston-Upon-Thames
KT1 3JU
All telephone and internet numbers / addresses as before.
Thank you JNDC
JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-3478047452923110312013-10-22T03:40:00.000-07:002013-10-22T03:40:32.651-07:00Busy and Exciting Times Ahead for the Freedman Chair
The Freedman Chair is set to break records on Kickstarter.
After such a successful launch, predicted to be the most funded UK Kickstarter campaign to date, the go ahead was given to start the manufacturing process.
JNDC have been working with Simon Freedman, an osteopath and inventor, for over two years. The process has involved the engineering design, development and prototyping of theJNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-82308516030595681352013-10-21T03:28:00.001-07:002013-10-21T03:28:13.080-07:00The Freedman Chair, a better way to sit - A hit on Kickstarter
Just under £100,000 pledged in the first 3 days on Kickstarter!
Kickstarter is a new way to fund creative projects. Each project is independently initiated. Project creators set a funding goal and deadline. If people like it they can pledge money to make the project happen. Projects must then reach their funding goal to go ahead.
Created by osteopath and inventor Simon Freedman and JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-60870383973344063322013-10-17T08:09:00.000-07:002013-10-17T08:09:34.710-07:00Crack Propagation Analysis
Introduction
Adhesive joints are increasingly used in various industries from aerospace to civil. They allow complex shapes to be joined and they also reduce the weight of the structure. Because of this composite materials are often bonded. Composite materials are very anisotropic, in the fibre direction they are strong and stiff however their transverse and shear properties are low. Bonded JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-41774736686117591692013-10-04T03:14:00.000-07:002013-10-04T03:14:17.370-07:00Pre-production Prototype Case Study - The chair that could save you life
Background
JNDC previously designed and manufactured two series of
prototype seats to undertake extensive research and development in relation to
ergonomics. Following the completion of
the second round of prototyping the customer instructed JNDC to undertake
design for manufacture as well as the manufacture of 5 "pre production"
prototypes.
Development
Moving from a detailedJNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-17382920441757210222013-10-02T07:34:00.001-07:002013-10-02T07:34:41.099-07:00Will Polymorph Help Reduce the Time to Manufacture Sand Cast Aluminium Parts???
Over the weekend I was thinking about the parts that we get printed here at work in ABS which are then sent to the sand
casting foundry to get the parts back all in the same day.
I was trying to work out what would make the process
quicker, and also lower cost.
Up to now, I have been printing the parts out and then the
foundry adds in gates, risers and sprues etc to allow the aluminium to JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-87928458450753595282013-09-25T05:52:00.000-07:002013-09-25T05:52:17.274-07:00Component Finite Element Analysis Work - L Bracket Assembly
Continuing on from the last blog this project invloved FEA analysis to be carried out on a L bracket assembly used to hold a roof window. The customer specified a total load of 700N acting on the assembly at the rotation point, causing a moment load to the main attachment lugs one of which is attached to the window the other to the roof frame.
The study results showed that the JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-90829603072776924282013-09-24T08:20:00.001-07:002013-09-24T08:20:30.245-07:00Component Finite Element Analysis Work - Sheave Assembly
We have been busy working on numerous projects over the last couple of months.
Finite element analysis work on components seems to be very popular, we will be blogging a few small examples:
Sheave Assembly
JNDC were contracted to perform an FEA analysis on the sheave assemblies to establish yield stress under a static load of 14,400lbs. (64,054N)
The analysis was carried out in two stages,JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-33957445465167852922013-09-23T01:44:00.001-07:002013-09-23T01:44:45.734-07:00Threaded Inserts in Rapid Prototype Parts / Could this be a Solidworks add on ....<!--[if gte mso 9]>
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JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-36925472749670841832013-09-20T08:47:00.001-07:002013-09-20T08:47:19.679-07:00From Solidworks CAD concept to Aluminium in a day....all down to 3D printing and Solidworks!
The Journey to Find Cost Efficient Aluminium Rapid Parts Continued - Part Six
So I got into the office early
this morning, to find an urgent job that needed an aluminium part!
We did the CAD quickly, sent it to
our Uprint 3D printer and I have just arrived back from the foundry with 5
castings! To some it might not sound like much, but for us, managing to
go from concept to JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-1693206682410549262013-09-20T06:58:00.001-07:002013-09-20T06:58:53.625-07:00Rapid prototyping to aluminium cast parts in 3 days... Solidworks add on Idea!
The Journey to Find Cost Efficient Aluminium Rapid Parts Continued - Part Five
It has been quite some time since the last time I put up the
blog. This is mainly down to us being
really busy utilising this new process.
At the end of my last blog, I just received back the first
cast parts having used rapid prototyped master parts in the sand casting
process. I finished off JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-19796228241406952302013-09-20T05:52:00.000-07:002013-09-20T05:52:24.554-07:00The Chair that Could Save Your Life - Huge Hit at 100% Design
100% Design Earls Court
Simon Freedman an osteopath and inventor was seeing more and more people whose problems are caused by prolonged sitting, or by the lack of a suitable chair. He has been creating a seat that allows the spine and pelvis to achieve that same posture in sitting when standing.
Exhibiting at the 100% Design Show in Earls Court has caused huge interest for this unique JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-208765462687865562013-08-07T06:21:00.000-07:002013-08-07T06:21:11.863-07:003D Printed Parts Cast for the First Time in Aluminium - Part Four
The Journey to Find Cost Efficient Aluminium Rapid Parts Continued.
Hi all, just for a quick recap, in the last blog I prepared
the CAD for our part to be cast. I ran
through the design and looked at how the molten aluminium will flow through the
mould, checked to make sure there is the correct draft angles on faces and
finally scaled the CAD to take into account shrinkage.
Below shows JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0tag:blogger.com,1999:blog-7298792442171643385.post-41983928464399351502013-07-31T02:42:00.001-07:002013-07-31T02:42:25.863-07:00Preparing Parts for 3D Printing for use in The Sand Casting Process - Part Three
The Journey to Find Cost Efficient Aluminium Rapid Parts Continued.
Following on from the last blog, 3D Printing for Sand Casting, I am going to cover what I
plan to change in CAD to make sure the plastic master part will work when it is sent to the foundry for sand casting. We use Solidworks here at work, but all the functions I will
be talking through can be found in other CAD software too.
JNDChttp://www.blogger.com/profile/15375952792698535926noreply@blogger.com0