autocad - tips and trick

This is a really ancient software, i consider this as the mother of engineering software
It's simple really, and as the story goes, there's also features to make 3d designs too. I myself wouldn't recommend the 3d, but the 2d autocad is really dependable
basically it's like manual engineering drawing, but with pointer as the pen, and you can make circle without effort. the overall techniques, it's all up to you. You can decide the standards, what to view, and what you don't want to see as free as possible
To use, it's not hard, but if you want to use it nicely, a lot faster, cooler and efficiently, you gotta follow this trick
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gear technology - basic gear types

I believe almost every machinist or engineer had dealt with gears. Gear are of the workhorses of motion control systems. They can turn RPMs into muscle for a conveyor belt moving heavy boxes or convert the torque of a wind turbine into sufficient speed to drive a generator. They can completely change the direction of motion. The technology is powerful, with sufficient options to satisfy virtually every occasion - when used properly, that is. There's so much types of gear, and each have its own advantages as well as disadvantages. Let's take a look at the basic types,  the one that is used as basic for another gear-arrangements or design modification

Gear is a mechanical device that transfers power from one element to another in a system. We define the gear ratio G for two gears as the ratio of their diameters, D1 and D2
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screw technology - ballscrew vs. leadscrew

Ballscrews and lead screws are the workhorses of today's motion-centric automation environment. In that light, making the correct choice for an application is extremely important.

Ballscrew technology allows balls to roll between the screw shaft and the nut to achieve high efficiency, usually above 90%, depending on lead angle. Its required driving torque is only one third of a conventional lead screw. As a result, ballscrews are capable of converting rotational motion to straight motion and vice versa. This screw type is suitable when smooth motion, efficiency, accuracy, and precision are a priority. The rolling elements eliminate sliding friction, so smaller motors can be used to drive ballscrews. And, because rolling motion is easier to control, accuracy and precision are also easier.

Lead screws are different in that there are no recirculating elements, and they are often used for simple transfer applications when speed, accuracy, and precision, are not as critical as rigidity and the load. On a positive note, more surface contact of the threads can make for a higher load rating of the nut over ballscrews. However, their metal-to-metal contact and high friction makes lead screws more suited to applications that do not require prolonged continuous movement or high speed.
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motor technology - IP rating

Choosing a motor for drive in a system is not a hard thing to do as long as you know the specification and the environmental requirement. It means we have to define how bad the working area surrounding the motor, as dust and water are critical for the motor's lifetime.

 The IP Code (or International Protection Rating, sometimes also interpreted as Ingress Protection Rating) consists of the letters IP followed by two digits and an optional letter. As defined ininternational standard IEC 60529:

The first digit indicates degree of protection provided by the enclosure with respect to persons and solid foreign objects entering the enclosure;
The second digit indicates degree of protection provided by the enclosure with respect to harmful water ingress.

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solidworks - creating weldment library

Have you ever use standard components like frames, UNP profiles, etc.? To create arrangement of these bars is a simple thing to do in SW. Of course, basically this program has included several standard profiles.But the hard part will come when you need to arrange profiles that are not inside library. So..we must make our own library. I myself learned it just recently from a SW expert's website

Here's how you can do it:

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solidworks - creating and mating gears

This is a useful feature indeed..I meet this feature first on Inventor, and soon getting attached to it.
This feature is an add-ins, so we have to activate it beforehand. I myself set my SW so that this add-ins will instantly active whenever i use Solidworks

Here's how we can do it :
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solidworks - tips and trick

Solidworks is one of 3d design software that is used by many recently. I did use some software, but this one managed to get my attention

Part creation is simple, with auto-constraint similar to autoCad, combined with easy to use animation making, and the most important is the dimension editing that can be done, even in the 3d display.

SOME USEFUL TIPS WHILE WORKING WITH SOLIDWORKS

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spindle technology - spindle design

A high speed spindle that will be used in a metal cutting machine tool must be designed to provide the required performance features. The major performance features include:
~ Desired Spindle Power, Peak and Continuous
~ Maximum Spindle Load, Axial and Radial
~ Maximum Spindle Speed Allowed
~ Tooling Style, Size and Capacity for ATC

High Speed Spindle Design Major Checklist 
The major components required for a high speed milling spindle design include:
* Spindle Style;   Belt Driven or Integral Motor-Spindle
* Spindle Bearings;   Type, Quantity, Mounting, and Lubrication Method
* Spindle Motor;   Belt-Type, Motor-Spindle, Capacity, Size
* Spindle Shaft;   Including Tool Retention Drawbar and Tooling System Used
* Spindle Housing;   Size, Mounting Style, Capacity

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casting design 04 - product design rules

The most important aims in designing aluminum castings are to plan components for ease of casting production and to improve casting soundness. Planning arrangements of sections so that progressive solidification is toward the heavier sections helps reach these objectives.

This principle should be adhered to when designing for joining and changing sections. Sharp corners should be filleted because fillets prevent cracks, tears and shrinkage at re-entry angles. Additionally, make corners more moldable, and reduce stress concentration in the casting when in service. Fillets should be large enough to meet engineering stress requirements and reduce stress concentration, but not so large that they cause shrinkage.
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casting design 03 - heat treatment

Many metal castings meet the specified property requirements in their as-cast form, but there are times when even the cleverest use of the casting process and alloy will leave a part lack of the requirements. In these instances, thermal treatment can change the mechanical properties to meet those critical needs.

Heat treatment consists of heating and cooling that enhances a material’s strength, consistency or ductility. The type of heat treatment required by a casting depends on the alloy and the final properties required.

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casting design 02 - casting process

The fundamental process of casting consists of five basic elements

• Molding—The mold cavity must be formed from a material that will withstand the operating temperatures and conditions of the chosen casting process and metal.
• Pouring—The molten metal is poured into the mold and travels through its passages to fill the mold cavity.
• Solidification—During the solidification process, the metal cools and becomes a solid shape.
• Mold Removal—The cooled casting is removed from the mold.
• Secondary Operations—The casting is trimmed, cleaned, heat-treated, machined, inspected, painted, etc.

These five basic elements are supported by design and fabrication of the patterns and cores for the mold, the fabrication of the mold cavity and the melting of the metal.
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casting design 01 - choosing the suitable method

Metal casting is a manufacturing process in which metal is melted and poured into molds where it solidifies into geometrically complex components.

In terms of component design, casting offers the greatest amount of flexibility of any metal forming process. The casting process is ideal because it permits the formation of streamlined, intricate, integral parts of strength and rigidity obtainable by no other method of fabrication. The shape and size of the part are primary considerations in design and in this category; the possibilities of metal castings are unsurpassed. The flexibility of cast metal design gives the engineer wide scope in converting ideas into an engineered part.

The freedom of design offered through the metalcasting process allows the designer to accomplish several tasks simultaneously. These include the following:
• Freedom of design to optimize functionality and manufacturability.
• Net or near-net shape design.
• Intricate components can be produced as single cast part.
• Few restrictions on part weight or size
• Almost all metals and alloys can be cast.
• Optimal appearance.
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standard components

A machine consists of hundreds of components. Each one must carry on its job in order for the machine to work perfectly. Every parts receives different function, load, and friction. This is what causes every component have different lifespan measured in working hour. When it's lifespan is over, it must be replaced with the same type of component. To ease yourself when designing machine as well as ease the maintenance team's work, we can use standard parts.

Since we are using standard parts, they tend to be produced in large quantity, its quality are standardized, measured and it's up to the design team to utilize them

The more standard parts you can use, the better and easier the designer's work be. Here's some component library we can use :
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greetings..it's my own blog

Nothing to do this night..guess i had a little bit of spare time and try to make..errr..what's this called? oh yeah..a blog~
So here it is, WELCOME to ST_FANUC's BLOG

After a deep consideration that i am not accustomed to writing a "diary" or daily journal, I found out one golden rule. This blog is mine, I am the King here.. So I can freely decide what to post.
Yeah, I am an engineer, such a boring profession i have here, every single day messing with machinery, new information and technology development in machining world. That's exactly why I decide to post all i know, whatever inside my head, whatever new information passed down to me, and of course every good things that i meet during my browsing times :D

Hope everyone can enjoy, If not, just go elsewhere :p