Manufacturing Processes: Hands On to Hands Off Ever wonder what methods you can use to make something? From manual to semi-automatic to fully automatic, watch what methods you can use to dome some simple manufacturing tasks such as cutting and drilling.
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- If you start with the plain piece of wood,
- how do you go about making this in different shapes.
- It depends on what kind of tools you wanna use.
- Any time you take a raw product,
- and you use tools and machinery to turn it into something useful,
- what you're doing is manufacturing.
- Manufacturing has changed over time
- and we use different tools now, than we used to long ago.
- But all of those tools can accomplish the same functions.
- So, what happens if you want to make a flower that looks like this?
- There is various ways that you can do that and various levels of automation.
- Automation is using computers and technology to help us
- instead of just using our own hands.
- Carpenters used to do everything by hand.
- So, say we wanna drill that hole in the middle of the flower.
- How would you drill a hole by hand?
- This is the tool called the brace and bit.
- The drill bit is here that has sharp edges that allow to drill into the wood.
- So, the way you would use this,
- is you position the drill bit where you'd like to make the hole,
- you apply pressure, and then by hand, you rotate the drill bit
- and have a drill into the wood.
- It is effective but it takes a very long time and quite a bit of elbow-grease
- to get the hole to the through.
- We have a hole, ladies and gentlemen.
- We can drill a hole by hand, but we can also use technology
- to help us do it faster and with less work.
- This is called the power drill.
- It uses the same drill that the hand drill did,
- except now, we have a motor attached with the battery
- that helps us do some of the work.
- So, with this
- we can drill right through.
- This is a piece of equipment called a CNC mill,
- which is a computer controlled piece of equipment that we can program
- to cut whatever shape we want.
- In this case we're going to be using this for drilling a hole,
- just like we used the power drill and just like we used the hand drill.
- Because this equipment is automated, instead of cranking on hand drill by hand,
- all we have to do is hit a button.
- So, now we figured out how to drill the hole
- so that we have a nice centre for a flower,
- but what happens when we wanna make the petals?
- Now, instead of drilling, we're gonna have to use the technique called cutting.
- One of the earliest methods was just with the saw.
- These are two examples of hand saws. There are two different kinds of hand saws.
- One is called a pull saw and one is called a push saw.
- This is an example of a Japanese pull saw
- and what you can see is that the teeth here face a little bit backwards.
- That means that when you cut,
- you'll be pulling in this direction in order to make the cut.
- This is an example of a push saw
- and you can see that the teeth face slightly forward
- and that means that you're cutting while you're pushing the saw through the material.
- Just like our hand saw had a blade middle metal with teeth on it to cut your material,
- this is a machine called a band saw
- that has the same blade right down here, also made on the metal with teeth to cut your material
- but instead of pulling the blade by hand,
- you have a motor up here which turns the blade for us.
- So using this machine we can cut right to our material.
- Just like using a band saw was a more automated way than using a hand saw
- in order to cut material a water jet is even more automated.
- A water jet is controlled by a computer that we can program to cut any shape we want.
- It takes an abrasive grit and it mixes it with a high pressure high velocity stream of water
- that goes through a tiny nozzle to blast through almost any material.
- The nozzle traces out the contours of whatever shape that was wanted.
- So, today we've looked at using manufacturing processes to make a flower
- in order of increasing automation we've looked at drilling
- from a hand drill to a power drill on the way to a computer controlled mill
- and then for cutting, we've looked at starting with the hand saw,
- moving to a band saw, on the way up to automated water jet.
- All of these tools do essentially the same things
- and at the end of the day, you' ve turned your plain piece of wood into a beautiful flower.
- Thank goodness manufacturing has become automated
- and it's moved from hands on to hands off or I might still be here
- drilling a hole with the hand drill.
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