Roboticss Essay, Research Paper

Mechanicss

Introduction

What is mechanics? If you & # 8217 ; ve of all time been around a natural philosophies instructor or applied scientist, they are ever speaking about mechanics, and its seems that no 1 truly understands what mechanics truly is. Quite merely, mechanics is the cognition of design and building of machinery. In robotics, this translates into the physical building of the automaton. Since every game is different ( therefore necessitating different mechanical solutions ) , this subdivision will be an debut of the different options for robot building available to the Robotics Team through the kit of parts from F.I.R.S.T. every bit good as the rudimentss of mechanical design/planning. Before we begin, it is clip for the one regulation:

There is merely one existent regulation which should be followed irrespective of the state of affairs: Whatever I say is all right and whatever you say is all right. Repeat it with me: & # 8220 ; Whatever I say is all right and whatever you say is okay. & # 8221 ;

The of import thing to retrieve is that we are all on a squad. There is non one individual on this squad whose thoughts are more valid than another & # 8217 ; s. Every individual individual has the right to show their thoughts and every individual should esteem that right. I think everyone will hold with that, so I & # 8217 ; ll halt sermon.

Where do we get down?

Traditionally, robot building returns as follows:

& # 8226 ; 1. Develop and Decide on Strategy

Since every twelvemonth the game alterations, the primary undertaking after the kickoff in January is be aftering the existent scheme for the squad. This by and large involves brainstorming in small groups and so showing each scheme to the corporate group. Then, pros and cons will be weighed for each scheme and so a scheme will be selected. From this scheme can be developed necessary undertaking for our automaton to put to death, which leads to an existent working design of the automaton.

Before we move on, everyone should understand that no 1 is ever right. The very nature of any technology undertaking ( including this one ) makes it impossible for a individual individual to plan the best undertaking. That is why it is necessary to hold a batch of people brainstorming together on the same undertaking. More people besides make trouble-shooting a batch easier, so it is of import to non merely oppugn your ain thoughts, but besides those of others.

Actually, delight, delight, delight ask inquiries. In fact ever inquiry. There is no design which is perfect and no thought which is unflawed. Continually inquiry, dissect, take apart, stare at every individual portion of the automaton. It is useless if we discover a defect during the competition ( i.e. faulty dyer’s rockets ) . Everyone can sleep together up- even engineers- and it is of import to recognize this and to ( about ) ne’er accept anything on religion.

& # 8226 ; 2. Design Robot

Once the undertakings have been finalized, design of the physical automaton can get down. At this phase, it is merely necessary to make up one’s mind on a frame/chassis design and major characteristics of the automaton. It will be the occupation of each squad to come up with the existent design of the constituents.

If you & # 8217 ; re like most people, you are likely stuck seeking to come up with a design. I wish there could be a set of waies I could give you to work out all of your creativeness blocks, but that is evidently impossible. I & # 8217 ; ve included a twosome arrows to assist you acquire over those mental suspensions common to all involved in any originative job.

Where do thoughts for designs come from? These are the most originative stairss of the whole procedure, and inspiration can come from anything. Let me reiterate that: inspiration can come from ANYTHING. If you are of all time stuck on a design job, travel expression at something around you. We are surrounded by mechanical wonders ( and even are one ourselves ) , and all are possible beginnings for a design. For illustration: notice how the arm on The Doctor automatically resembles a human arm? Coincidence? Probably non.

Another technique that seems to work good is merely allowing your head wander. One twenty-four hours after school, Mr. Van was speaking about something

or another and I found myself blanking out, singing “Casey Jones” by the Grateful Dead in my caput. So I started believing about trains…and the manner old trains were driven by those associating weaponries on the wheels…I realized how powerful and pack that system was…the grabbers needed to be powerful and compact…WHAMMO! we had our grabber design. And instructors ever say pay attending during category.

These are merely thoughts, do non experience limited to these techniques. Say, you find eating cheese is peculiarly animating to you, by all agencies, do that. You likely shouldn & # 8217 ; t state excessively many people about that, though.

& # 8226 ; 3. Component Design

After the human body has been designed, and the major constituents roughed in, it is clip to interrupt into squads, with one group per major constituent. The squads serve to concentrate the attempts of the corporate squad, concentrating each group on every item of their several constituent. The groups will go axiomatic after an overall design is decided on, and you will take in which group you want to take part. After the groups are formed, each is responsible for making a concluding design of their constituent, with every item planned ( including parts, motors, electronics, abilities, restrictions, etc. ) . Then comes the fun portion.

& # 8226 ; 4. Construction

This is the good portion, the bosom of the undertaking. Every group is now responsible for the building of their constituent. Depending of the design, this will necessitate hours in the machine store, more hours in Mr. Van & # 8217 ; s room seeking to acquire everything together, and countless more trouble-shooting the stupid thing ( all in good merriment, of class ) . Once all of the parts are assembled, it is clip to convey everything together.

& # 8226 ; 5. Final Assembly

This is when all of the single constituents come together and the automaton is really completed. If everything goes swimmingly the constituents will all suit together absolutely, everything will work every bit planned, and the automaton will be complete. Of class, that & # 8217 ; s likely non traveling to go on, so this is the clip to finish the troubleshooting of the constituents, every bit good as the interaction of the separate constituents. Hopefully there will be no major design defects and the automaton will be complete. That & # 8217 ; s it!

Note: Since this is the mechanics subdivision, I didn & # 8217 ; t advert the electronics or programming. That happened someplace between measure 3 and step 5, I think. The other two subdivisions will cover with that material.

Materials

So your squad has designed the perfect, elegant constituent. But you forgot one thing, the ill-famed kit of parts. F.I.R.S.T. provides every squad with a kit of parts, which includes the automaton accountant, the pneumatics, the motors, and some other cool material. The job is, we are limited to utilize lone parts from the kit, the Small Parts catalogue, or the extra parts list. In this subdivision, we are traveling to look at some of the different design options available for the competition.

Motors

Motors are the driving force of the automaton ( haha- bad wordplay ) . There are legion different motors which can be used in a big assortment of state of affairss. And what is a motor? A motor is any mechanism that produces or imparts gesture. This can be through the transition of heat energy, chemical energy, or electrical energy into mechanical energy, but we are limited to utilize electrical motors ( that & # 8217 ; s right, we can & # 8217 ; t strap a two shot lawnmower motor on the automaton and allow & # 8216 ; er rake ) . Below is a chart with the specifications of the different motors. You are non expected to understand torsion or current draw, or anything else on the chart ; it is simply included as a agency for comparing of the different motors.

Motor No-load Speed ( RPM ) Stall Current ( Amps ) Stall Torque ( N & # 8226 ; m )

Van Door 75 40 34-37

Fisher-Price 15,000 57 0.36

Globe 87-97 18.5 16.9

Seat 95-615 5-17 0.1-1.3

Bore 20,000 16.9-114 85.6-651

Window Lift 22-64 3-15 1.8-6

Torque 0.17 35 4

Pneumaticss

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