how can modify a hydraulic arm project for exhibition????
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Hydraulics is used in many applications we see or use every day. The brakes in an automobile or the lift on the bucket of a tractor are two very common applications. We can experiment with simple hydraulics using plastic syringes for cylinders and small plastic tubing for the hydraulic hose. One definition I read for hydraulics was, “the movement of pressurized liquids through confined spaces”.
Like working with gears, pulleys, or levers; a mechanical advantage can be realized by using different size cylinders on the end of the hydraulic connections. By trading distance moved with the amount of force the advantage is realized.
Like working with gears, pulleys, or levers; a mechanical advantage can be realized by using different size cylinders on the end of the hydraulic connections. By trading distance moved with the amount of force the advantage is realized.
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so rest steps are
Now you have to make the holder for the claw that goes between the “C+CUBE+C” piece.
The holder is a “rectangular cube” that is 4 inches long and the sides are 2 inches by ½ inch.
follow the same steps in step 4 and the attach to the front of the "C+CUBE+C" piece flush with the front.
The holder is a “rectangular cube” that is 4 inches long and the sides are 2 inches by ½ inch.
follow the same steps in step 4 and the attach to the front of the "C+CUBE+C" piece flush with the front.
Now make the claw, the "D" piece. depending on the thickness of your cardboard you need to put as many layers of cardboard and tape as you want until you get a strong claw (in my case 2 layers of cardboard and one of tape)
Make hole in both parts of the claw large enough for your 1 1/4" screw
Make hole in both parts of the claw large enough for your 1 1/4" screw
Now make a hole in the front corner of the claw holder in the "C+CUBE+C" piece
Put you screws and attach the claw parts.
At this point you should be half way there, hold the parts on their place and drill you have to drill in the joints of the robot across the inside of the cubes and place you screws.
Put you screws and attach the claw parts.
At this point you should be half way there, hold the parts on their place and drill you have to drill in the joints of the robot across the inside of the cubes and place you screws.
Step 9: Attach to Base and Make Hydraulic System 1st Syringe
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Now attach the robot to the base.
Drill in the middle of the cube at the bottom of the "A+CUBE+A" piece and on the wood for the base and put your 3" screw.
Now to start with the Hydraulic system.
Attach you first syringe to you holder on the "A+CUBE+A" piece (just like the picture)
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Now attach the robot to the base.
Drill in the middle of the cube at the bottom of the "A+CUBE+A" piece and on the wood for the base and put your 3" screw.
Now to start with the Hydraulic system.
Attach you first syringe to you holder on the "A+CUBE+A" piece (just like the picture)
Now cut two pieces as wide as your second cube by 1/2 inch tape them together and attach this to the 1 inch space you left in the "B+CUBE+B" piece (just like the picture)
then put a pin in that new piece and tape around it then tight a piece of rope to the pin and from there to the syringe tight and cut, make sure the arm is down and the syringe is all the way out to get the right length of your rope (refer to picture for better understanding)
then put a pin in that new piece and tape around it then tight a piece of rope to the pin and from there to the syringe tight and cut, make sure the arm is down and the syringe is all the way out to get the right length of your rope (refer to picture for better understanding)
Step 10: Second Syringe
For the second syringe you need to make a holder in the top part of the "C+CUBE+C" piece.
Use the same procedure as step 9, make sure the arm is down and the syringe out to get the right length for the rope.
This is completely adjustable depending on how high or how low you want your arm to move, play around with the length of the rope to find out what works best for your robot
For the second syringe you need to make a holder in the top part of the "C+CUBE+C" piece.
Use the same procedure as step 9, make sure the arm is down and the syringe out to get the right length for the rope.
This is completely adjustable depending on how high or how low you want your arm to move, play around with the length of the rope to find out what works best for your robot
Step 11: Syringe for the Claw
The syringe for the claw is going to be directly attached to the claw with duct tape, make sure the duct tape is not too tight so the claw can move freely.
Step 12: Syringe to Turn the Arm
At the base of the robot attach a pin and the a syringe about 3 inches from the pin
The syringe for the claw is going to be directly attached to the claw with duct tape, make sure the duct tape is not too tight so the claw can move freely.
Step 12: Syringe to Turn the Arm
At the base of the robot attach a pin and the a syringe about 3 inches from the pin
Attach a wire from the pin to the syringe when the syringe moves makes the arm rotate left or right.
Now tape to the wood base 3 syringes next to each other, each of these are to be connected to the syringes in the arm.
Step 13: Run the Tubing to All Syringes
Run the tubing to all the syringes and the fill with water and enjoy.
good luck with your science exhibition
Now tape to the wood base 3 syringes next to each other, each of these are to be connected to the syringes in the arm.
Step 13: Run the Tubing to All Syringes
Run the tubing to all the syringes and the fill with water and enjoy.
good luck with your science exhibition
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Step 1: What You Are Going to Need!FOR THE BODY OF THE ROBOT:
- Cardboard box (the harder the better, I used a pizza box but you can used any type because we are going to reinforced with the duct tape)
- Scotch Duct tape (I like the silver because the metal like look)
- 3 machine screws 3 inches in size with nuts
- 2 machine screws 1 ¼ inches in size with nuts
- A flat and square piece is wood ideally 12 inches by 12 inches for the base to attach the robot
FOR THE HYDRAULIC SYSTEM:
- 8 syringes (you can get them at any pharmacy without prescription just say you need the type that is use for cough medicine, you can’t put a needle on those. I got mines at CVS and Walgreens for free)
- 6 feet of clear tubing ¼ “x .170” (got mine at home depot for $3)
- Water
TOOLS:
- Scissor
- Ruler
- Pen
- Drill
Step 2: Draw the TemplateNow draw the template on the cardboard, these are the measures that I used but you can change them to make a smaller or bigger robot.
From the template cut out:
2 x A piece
2 X B piece
2 x C piece
2 x D piece
1 x E piece
These are the main parts of the body and the rest of the parts are going to be made as you go because they depend on the thickness of your cardboard and how many layers of duct tape you use. Because I used thick pizza box I only needed one layer.
Step 3: Reinforce You PartsNow that you have all you parts cut out you have to reinforce them. First cover one side of a piece with duct tape and the cut the extra tape, the cover the other side and cut the extra tape.
Repeat this for all the parts, if your cardboard is not strong enough repeat this step putting more layers of tape until you are satisfied with your result.
Step 4: Start BuildingNow the best part, when you see that your robot starts taking shape.
The next piece you have to make is a cube that is going to hold together the bottom of the 2 “A” pieces
For my robot I used a cube that is 3 inches wide by 1 inch sides (cube= 4 sides)
After you cut and fold the cube reinforce it with tape.
Step 5: Continue BuildingThe reinforce cube needs to be attached to the bottom of the “A” piece (the bottom is the longer part 3”)
First attach it to one piece and then the other.
Put your piece in the floor to make sure the cube is level before taping.
The technique i use for taping i call it L taping, look at the picture so you can understand better.
Next attach the "A+CUBE+A" piece to the 6" circle base using L taping (use as much tape as you think is necessary to get a strong hold )Step 6: Make Your Next Cube and Holder for the First SyringeHold your two “B” pieces on the inside of the “A+CUBE+A” piece and measure the space between them, that is how wide your cube needs to be.
Now make your cube with your new size following step 4
( in my case my new cube is 2 1/2" wide)
keep the 1 inch measure for the sides of the cube.
After making your cube attach it to the “B” piece leaving 1 inch space from the end.
Next depending on the thickness of your cardboard make 2 or more squares as wide as your first cube (in my case 3 inches) by 1 inch long and tape them together , this will be taped to the middle of the “A+CUBE+A” piece to hold the syringe.
Place the square vertical and give it just a little of an angle.Step 7: Build Next Part and Next CubeRepeat the beginning of step 6 but with the "C" pieces. Hold you “C” pieces on the inside of the of the “B+CUBE+B” piece and measure the space between them, that is how wide your cube needs to be (in my case 2 inches wide) by 1 inch long for the sides.
Reinforce the cube and the attach it to the corner of the "C" pieces.Step 8: Make the Holder for the Claw and the ClawShow All 9 Items
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