CNC Machining Blog http://cncmachiningzone.org/blog Great Information on CNC Machining Mon, 09 Aug 2010 16:25:01 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 Electrical Noise in facility 115 VAC line? http://cncmachiningzone.org/blog/cnc-machine-shops/electrical-noise-in-facility-115-vac-line http://cncmachiningzone.org/blog/cnc-machine-shops/electrical-noise-in-facility-115-vac-line#comments Mon, 09 Aug 2010 16:25:01 +0000 admin http://cncmachiningzone.org/blog/cnc-machine-shops/electrical-noise-in-facility-115-vac-line Our manufacturing facility has about 10 large CNC machines. I think one (or more) of the machines is creating noise on our 115 VAC circuit. This cause the uninterpretable power supplies (UPS) to click on an off through out most of the day. When the shop guys go home, the UPSs stop clicking. Any suggestions on how to isolate the problem and reduce the noise induced into the system?

this is usually very complex to pin point

you need the expertise of an electrician with proper monitoring tools

m

Tags: cnc machines, electrician, facility, manufacturing, monitoring tools, noise

]]> http://cncmachiningzone.org/blog/cnc-machine-shops/electrical-noise-in-facility-115-vac-line/feed 3 cylinder head porting and cnc porting? http://cncmachiningzone.org/blog/cnc-machine-shops/cylinder-head-porting-and-cnc-porting http://cncmachiningzone.org/blog/cnc-machine-shops/cylinder-head-porting-and-cnc-porting#comments Wed, 04 Aug 2010 19:52:41 +0000 admin http://cncmachiningzone.org/blog/cnc-machine-shops/cylinder-head-porting-and-cnc-porting ok i am looking for a place to go and learn head porting and then i want to get in to cnc head porting and want to konw what machines are the best out there i have been looking at the rottler p55 and the centroid looking for any feed back or help.

ps please dont say go get a job in a shop as there are no shops by me that do this work!
ok i am not see much help so is there any thing other then the mondello school?

Try the school at Mondello,,,,,,,,,

Tags: Centroid, head, job, mondello, p55, school

]]> http://cncmachiningzone.org/blog/cnc-machine-shops/cylinder-head-porting-and-cnc-porting/feed 2 Will i get solution? http://cncmachiningzone.org/blog/cnc-machine-shops/will-i-get-solution http://cncmachiningzone.org/blog/cnc-machine-shops/will-i-get-solution#comments Sat, 24 Jul 2010 19:37:08 +0000 admin http://cncmachiningzone.org/blog/cnc-machine-shops/will-i-get-solution AFTER COMPLETION OF MY DIPLOMA I HAVE JOINED FOR PRACTICAL SKILLS OF CNC & CONVENTIONAL MACHINES, AND HAVE GOT AN EXPERIENCE IN ONE OF LEADING COMPANY IN INDIA AND ABROAD, I.E ALUMINIUM DIE & MACHINERIES MANUFACTURERS COMPANY, I HAVE WORKED AS CNC SHOP INCHARGE IN VMC MACHINE, WITH OPERATION AND PROGRAMMING SKILLS, I HAVE WELL EXPERIENCED IN AUTO CAQD DRAWING, WHERE I HAVE DESIGNED WITH THE HELP OF HIGH TECHNICAL PERSON THE MACHINES OF ALUMINIUM EXTRUSIONS FIELD. I AM TRYING TO LEARN B.E IN MECHANICAL ENGINEERING, AFTER COMPLETION OF MY COARSE IS THERE ANY OTHER WHICH IS BETTER TO LEARN OR WORK FOR MY LIFE, CAN I GET THE SOLUTION FOR THIS?

Better start working if you have no other income else study.

Tags: aluminium extrusions, and, COMPLETION, conventional machines, incharge, India, the

]]> http://cncmachiningzone.org/blog/cnc-machine-shops/will-i-get-solution/feed 2 1945 or older model car or truck have a flat head that needs body? http://cncmachiningzone.org/blog/cnc-machine-shops/1945-or-older-model-car-or-truck-have-a-flat-head-that-needs-body http://cncmachiningzone.org/blog/cnc-machine-shops/1945-or-older-model-car-or-truck-have-a-flat-head-that-needs-body#comments Thu, 15 Jul 2010 00:38:32 +0000 admin http://cncmachiningzone.org/blog/cnc-machine-shops/1945-or-older-model-car-or-truck-have-a-flat-head-that-needs-body I don’t care what it is we can work with anything and this what we do
for fun We also have a full shop for cars including CNC machines…
So it does not matter what the body looks like it just needs a body to go into to.

try www.edsprojectcars.com

Tags: anything, body, cars, cnc machines, fun

]]> http://cncmachiningzone.org/blog/cnc-machine-shops/1945-or-older-model-car-or-truck-have-a-flat-head-that-needs-body/feed 2 names of companies that used cnc turning and milling in the 1990’s around london area? http://cncmachiningzone.org/blog/cnc-milling-machine/names-of-companies-that-used-cnc-turning-and-milling-in-the-1990s-around-london-area http://cncmachiningzone.org/blog/cnc-milling-machine/names-of-companies-that-used-cnc-turning-and-milling-in-the-1990s-around-london-area#comments Mon, 05 Jul 2010 00:03:01 +0000 admin http://cncmachiningzone.org/blog/cnc-milling-machine/names-of-companies-that-used-cnc-turning-and-milling-in-the-1990s-around-london-area i worked briefly in the south east of england in the mid 1990’s using cnc machines but cannot remember the name of the company. can someone jog my memory please…

Try looking at your old tax forms for the name of the company.

Tags: briefly, cnc machines, company, memory, name, tax forms

]]> http://cncmachiningzone.org/blog/cnc-milling-machine/names-of-companies-that-used-cnc-turning-and-milling-in-the-1990s-around-london-area/feed 1 How can I mill a circle on a bridgeport milling machine? http://cncmachiningzone.org/blog/cnc-milling-machine/how-can-i-mill-a-circle-on-a-bridgeport-milling-machine http://cncmachiningzone.org/blog/cnc-milling-machine/how-can-i-mill-a-circle-on-a-bridgeport-milling-machine#comments Sat, 26 Jun 2010 07:35:06 +0000 admin http://cncmachiningzone.org/blog/cnc-milling-machine/how-can-i-mill-a-circle-on-a-bridgeport-milling-machine I would like to learn how you can use a normal 3 axis milling machine to cut or mill reasonable circles in steel. machine has no cnc function although it has a digital readout on two axis. Many thanks!
The hole in a 350 mm diameter pipe and the hole diameter is about 150mm. Rotary tables are no good for this, aint got one anyway! Spoke to a guy in a pub (always a good place for reliable info) and he talked about "equation of a circle" which is pythagoras to most of us, but he was well oiled and mumbled

I know what you want to do. Its cut a nice circle in pipes without all that pattern development and grinding to shape.
OK use polar to rectangular coordinates for each of 360 degrees to get your x,y figures. you will have to remember to turn the right handle first as the order will change each quarter circle. Sketch things out on paper first and then have a trial run on some scrap.
You dont have to use 360 degrees it just depends on the finnish.
remember to get the +y -y and +x -x the right way for each quarter

Tags: axis milling machine, circle, hole, hole diameter, machine, rectangular coordinates

]]> http://cncmachiningzone.org/blog/cnc-milling-machine/how-can-i-mill-a-circle-on-a-bridgeport-milling-machine/feed 4 Why does my machine not start straight away? http://cncmachiningzone.org/blog/cnc-milling-machine/why-does-my-machine-not-start-straight-away http://cncmachiningzone.org/blog/cnc-milling-machine/why-does-my-machine-not-start-straight-away#comments Tue, 15 Jun 2010 11:07:59 +0000 admin http://cncmachiningzone.org/blog/cnc-milling-machine/why-does-my-machine-not-start-straight-away When I press the start button on my machine, it doesn’t start until the gearbox makes a clunk, then it kicks into life. Why does it do this?

My machine is a Boko CNC mill.

It needs a service

Tags: boko, button, clunk, machine, start, start button

]]> http://cncmachiningzone.org/blog/cnc-milling-machine/why-does-my-machine-not-start-straight-away/feed 4 Pros and Cons in Sheet Metal Manipulation with CNC http://cncmachiningzone.org/blog/uncategorized/pros-and-cons-in-sheet-metal-manipulation-with-cnc http://cncmachiningzone.org/blog/uncategorized/pros-and-cons-in-sheet-metal-manipulation-with-cnc#comments Wed, 09 Jun 2010 00:31:02 +0000 admin http://cncmachiningzone.org/blog/uncategorized/pros-and-cons-in-sheet-metal-manipulation-with-cnc The advancement of technology allowed sheet metal designs to be more complicated. However, this level of complication has surpassed human capabilities (as far as mass production is concerned). The required accuracy for the intricacy of the designs can only be provided by Computer Numerical Controlled (CNC) machines.

The Punch press

An example of a CNC machine that is used in sheet metal manipulation is the punch press. This device uses hydraulic, pneumatic, or electrical power to exert immense pressure to shape the metal and cut it according to the designs. Being computer aided, this machine is capable of rapid positioning and therefore, fast production. Manual punch presses compromise speed for accuracy therefore lessening efficiency.

The punch press works by receiving instructions from a program in a computer. This allows the operator to sit back and relax once the cycle (rapid positioning, punching, and switching of tools) has been initiated. These machines perform operations with accuracy that is measured by the thousandth of an inch.

Introduction of these machines into the sheet metal industry sped up production significantly. And to stay competitive in the global market, such an edge would be needed. However, technology finds ways to improve on this.

New devices

Today, presses have newer versions. The turret punch press is capable of sorting sheet metal into their respective design classes. This means that the new punch presses can operate virtually unattended. Steel manufacturing companies invest in these machines should it mean streamlining of their jobs and increasing production capabilities.

Newer CNC machines can even alert operators who are not in the area if a problem crops up during the sheet metal punching process. This happens by enabling the CNC machine to keep track of the operators’ phones. Therefore, the workload of the operator is relaxed to the point that he/she does not even need to be in the area of operation.

The drawback

However, these machines do not come cheap. A lot of time, money, and effort have to be spent in order to operate the machine to its fullest capacity. Furthermore, there is a shortage of people who are skilled enough to operate such machines. An operator has to be knowledgeable with BASIC programming language, fundamental machining processes, design awareness, and accessory functions.

Furthermore, knowledge of Computer Aided Design and Computer Aided Manufacturing (CAD/CAM) is a big factor in being able to control such machinery. So the capital that you have to spend on understanding these machines have to be justified with the caliber of the operator that you have.

Another drawback that is present is the compatibility of the machines with the current technology that the company has. If they are incompatible, it takes even more time and money to replace current facilities or to restructure the factory in order t accommodate such devices.

The Conclusion

so, if you’re a big company and you want to stay in the race, you have to consider and reconsider investing into these things. The investment may be worth itself a hundred times over but it is a rather risky choice to step into something new. You have to restructure your work schedules, change the requirements for operators, and provide proper training to operators that you want to keep.

These things will cost a lot and will take a while before they reflect what they really are worth.

Tags: manual punch, metal, metal manipulation, Punch, sheet, turret punch press

]]> http://cncmachiningzone.org/blog/uncategorized/pros-and-cons-in-sheet-metal-manipulation-with-cnc/feed 0 The Different CNC Machines http://cncmachiningzone.org/blog/uncategorized/the-different-cnc-machines http://cncmachiningzone.org/blog/uncategorized/the-different-cnc-machines#comments Tue, 08 Jun 2010 04:33:01 +0000 admin http://cncmachiningzone.org/blog/?p=362 CNC has different applications depending on the machines that operate on it. So if you’re a budding operator, you should know the most common machines that can operate on CNC.

Milling

Milling machines are common CNC machines. These devices are used in the shaping of metal and other solid materials. It is basically a rotating cutter and a table. Milling machines are capable of complex toolpaths as the cutter is not limited to a sideways movement but allows for an “in and out” motion. This movement is precisely controlled by moving the table and the cutter relative to each other. Cutting fluid is then pumped in to lubricate and cool the cut and to remove any swarth that is generated by the cut.

Lathes

Lathes are machines that perform different operations such as sanding, cutting, knurling, deformation, or even drilling. These machines work by spinning various solid objects and then using tools that are symmetric to the axis of rotation. A lathe machine has a single tool in which the workpiece is worked against the tool. The tool is then worked alongside or into the workpiece in order to generate the feed.

Lathes can be used for different operations.

Machining Centers

These are more complex CNC machines that combine milling and turning. As milling was described earlier, turning will be the focus of this section.

Turning is the process by which a central lathe is used in conjunction with the rotation of the material to be turned. The cutting tool is then moved along the two axes of motions to produce accurate dimensions.

Combining turning and milling can produce extremely precise components. And that is what these machines are used for. However, due to the complexity of these machines, operators have to be specialists in order to be able to operate with maximum efficiency.

Electrical discharge machine

An electrical discharge machine (EDM) creates cavities in metals by emitting electric sparks. This process requires an electrode, coolant, a power source, and a tank. The cycle is accomplished by connecting the workpiece to one side of the power supply and then placing it in the tank. An electrode (made in the shape of the cavity required) is then connected to the other side of the power supply.

The tanks is then filled with coolant and the electrode is lowered until a spark jumps between the work and the electrode. As the coolant is a dielectric substance (resists electric currents), it requires a smaller difference in distance in order for a spark to jump through. This means that when the spark appears, the dielectric property has been overcome. The spark then dislodges material thereby creating a cavity in the shape of the electrode.

CNC systems

CNC systems are complex machines that transfer and store data regarding the operation mechanism of the machines. Motion programs include point to point control, straight cut control, and contouring control.

Point to point control means the control of the tools from one point to another in the coordinate plane. This method of control is commonly used in drilling and boring operations.

Straight cut control is the method by which a tool is moved in all axes of the machine. The tool also has the ability to move in a 45 degree angle.

Contouring control is the means to create a toolpath. It moves the tools by interpolating points or coordinates that make up the path for the tool to follow.

Tags: CNC, control, electrical discharge machine, lathe machine, milling machines, tool

]]> http://cncmachiningzone.org/blog/uncategorized/the-different-cnc-machines/feed 0 The Basic Parts of a CNC Machine http://cncmachiningzone.org/blog/uncategorized/the-basic-parts-of-a-cnc-machine http://cncmachiningzone.org/blog/uncategorized/the-basic-parts-of-a-cnc-machine#comments Tue, 08 Jun 2010 03:32:19 +0000 admin http://cncmachiningzone.org/blog/?p=358 If you carve your name on a wood using a very sophisticated font, you’re lucky if you’ll finish your first name in 24 hours perfectly. Years ago, wood crafting and metal crafting are very expensive massive- labor industries because every aspect of the manufacturing is done by hand. There was minimal machine intervention but the designs were still as intricate.

Today, with the help of technology, wood carving, metal molding, cutting and even finishing can be done simultaneously with minimal hands involved. In fact, a company is deemed unproductive if it mass produces products every day BY HAND.

CNC (Computer Numerical Control) machines are in demand in industries where hands are better off pushing buttons than doing actual labor. Businessmen are raving about this wonder-machine because it is accurate, speedy and flexible.

The CNC machine is actually a factory of its own. There are different parts that have specific functions. Let’s get to know the “factory workers”.

THE VICE

The Vice is what holds the material which is to be cut or molded.  It is important that the vice must be tight; so the material will be held securely. When the CNC machine starts to operate, the material will dash out of the vice if it is not secured. The vice usually works like a clamp that needs to hold the material not just securely but also in the right position.

THE GUARD

The Guard—just like any other guard—works like a “protection” to the person operating the CNC machine. Once the CNC starts working, scraps of the material can “shoot off” at high speed. This is very risky for the operator if a piece hits him/her. The guard completely covers all the hazardous sides of the CNC machine.

THE CHUCK

The chuck holds the cutting tool. Sophisticated designs require maximum chuck precision so the actual design can be realized.

THE MOTOR

The motor rotates the chuck at very high speed. It is hidden and protected inside the machine. You have to take care of this part very carefully. Nowadays, cooling and lubrication is automated in most CNC machines. Usually, if this part doesn’t function well, it is the most difficult to treat. It is advised to have a CNC technician handy all the time.

THE LATHE BED

Like the sea bed, this is the sturdy base of the CNC machine. It is connected to the headstock and aids the carriage and tailstock to be parallel with the spindle’s axis. It is securely bolted so it remains unshaken by the vibration of the machine when it starts operating.

THE CUTTING TOOL/ CUTTER

This is the where the first-level shaping occurs. The cutter is usually made from high quality steel so as to cut the specific material fed to the CNC machine.

As a businessman, it is important that you get to know your employees, bond with them and earn their respect without scaring them. When you have CNC machines working for you, it is equally important that you understand them well. Do not be fooled by the CNC machine salesmen who court your interest because they are usually just after your purchase.

You have to master what comprises these machines, what makes them dysfunctional and most of all, what makes them stay in your company. Just don’t start talking to them. That would be really, really, dysfunctional.

Tags: CHUCK The, CNC, computer numerical control, machine, material, metal molding, sophisticated designs

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