Tube bending tools engineering

2017.06.25

Tube bending for lot of people seems to be a very easy job. That is why there are a lot of discussions when the case is to sell the modern and high technology tube bending machine. Manufacturer tries to explain what all the options for, what are the problems and why finally the machine cost so high! Sure thing all the things are clear enough for the people in really productivity industries like automotive. But when the story is for other applications…

Tube bending tools could be quite expensive as well. Mainly there are two main principles – main sizes and complexity of development and production. Any even simple tools for big diameters for oil and gas lines, shipbuilding etc. when the diameters are nearly hundred and more cost lot of money. For small diameters the cost could be for complicated tools with the special surfaces, short clamping parts for tight block of the tube, multi-stack tools with several radiuses on one tool to work with different planes…

Moreover the responsibility is high! There are no unification and standardization; tooling is only for the specific machine and specific job to do. Even sizes of the tools are different – all manufacturers have their own connections to tie the customer with the future tooling supplies. And for bending tools there is only one result – to bend the tube with proper requirements. Yes, a lot of depends on the machine and the operator skills for setup but tool is main and general part you can’t ignore.

Complicated tube bending tools are really look impressive. And the jobs with them are the really wonderful view to explain for potential customers all the possibilities and functions. A sure thing, a lot of depends of the costs but if you run the machine for half of million USD with the thousands of parts for daily production you can’t ignore the quality tools. Otherwise why do you purchase the machine?

Press brake tools from Italy

2017.06.17

Historically Italy had a big quantity of separate press brake manufacturers. Lots of them are unknown outside of Italy; lots of them closed, came to bankruptcy or were sold so today Italy lost the big potential and the leading place for press brakes manufacturing.

In spite of this Italy has the top place for the production of press brake tools with the dozens of strong and professional companies, known worldwide. Good quality, competitive prices, short delivery times make Italian tools the powerful competitor even against the Asian products. Hundreds of brand names including the press brake machines manufacturers are used for sale of Italian tooling all over the world. Why Italy is so powerful on this market even today? Together with the heavy background it is necessary to say Italy is one of the strongest players for different metal parts production by turning, milling and grinding operations.

As the country of lots of private and family businesses Italy grew with the growing of small workshops (in Italian “Officina meccanica”) and even today there are huge quantity of Italian sub suppliers for different kind of products. So finally press brake tools are the one of the final products which had a start in workshops. Horizontal cooperation also helped to grow – for example today almost all manufacturers of press brake tools use one or two the same partners to make the tool hardening outside of the main production.

The last word is the technical school. Italians like engineering, want to be engineers and have a lot of engineers to achieve the power at the industrial market. Without any doubts – tooling “Made in Italy” is the mark of the quality.

 

Punching tool systems – Multitool

DSC_0164

Everybody who looks for the first CNC punching machine to proceed with sheet metal has the question has the question what punching tool system he should use.

We will not speak about all the details because this is the role of the punching machine manufacturer. Anyway it is important to know some simple things – the main point for tool system of the punching machine is the specification of your production. Let’s explain. The simplest punching machine with CNC has one and only one station where you can put Multitool head. This is the most economy solution but with serious limits for production – for example you will have 8 tools with 24 mm max. diameter of tooling. One tool for sure will go for cutting operation (moreover this tool will be much smaller with length compare with bigger machines i.e. – more hits for cutting) so you will have 7 tools so 7 possibilities for different holes for the production part. This article will not about the limitation with speeds and production possibilities so we will ignore some moments. But for Multitool it is important to know that you will do standard parts but not the forming operation like punching of louvers. There are different Multitool heads on the market but there is everywhere the limits for tooling – more max. diameter for the tool – less tools quantity in Multitool head.

Multitool in general is installed in the D-Station head (max. diameter 88,9 mm) so it means the punch machine we spoke about has one D-Station tool possibility. For sure for standard and modern Multitool heads all the tools inside are indexed – it means they could be rotated.

The next generation and more expensive solution is the turret for example with 6 D-station which means, that you can use, let’s say, 3 Multitools inside + 3 tools for D-station. This solution has much more possibilities – you have much more tools in Multitool heads for small diameters, you can do normal cutting with big length tool (for example 80×5) and you can think what to install to other D-Stations.

Today Multitool heads are presented from several manufacturers, but you need to be warned that one Multitool head can cost more than 5-6 thousand of EUR. Anyway Multitool offers great flexibility with indexed tools, there are different solutions on the market and it is very easy to find your Multitool punching tools supplier.

Original and non-original tools

DSC_0155

All the producers of machine tools, in particular tube bending machines, punching machines or press brakes offer the possibility to purchase original tooling together with the purchased machine. The advantages are quite simple – under original tooling the manufacturer tries to convince about the high quality of tooling and absence of any faults or problems for the customer. Moreover it is better to get the machine with tooling from one hand, so like the “key turn purchase” where you can start the production immediately after receipt of the machine.

So if everything so good why customer should study the “non-original” tooling not marked with the manufacturer of the machine? The answer is also simple – 90% of manufacturers do not have the real production of the tooling, sometimes they do the project and drawings development but the manufacture takes place outside. Moreover it is the question of the investments – “original tools” are totally more expensive against other competitive offers for these types.

Yes – every manufacturer is not the reseller – finally they are responsible for the machine and tooling is the important part of it. Moreover sometimes, like for tube bending tools it is not just the way for simple installation of tooling on the machine but the question of fine adjustments.

Sure thing if the customer requires from the manufacturer of the machine the guarantee to make his parts with required precision and quality the manufacturer can’t guarantee nothing without supply of tooling from his hands. So it is good for everybody to buy tools and the machine together. But in a lot of cases it is not so important and moreover not so complicated for the customer if he buys his second or third machine. In this case we can also help and offer – high quality press brake tooling, punching tools, tube bending tools from Italy to produce the quality parts.