西西软件园

西西软件园 The chicken is automatically put on the rice "Tick! Tick! The two hens on the shelf were swinging in rhythmic motion The shaking took turns to peck at the food. This is the figure 44 The activity of the toys. The double chicken pecking rice automatically USES the gravity of the heavy hammer to turn the handle, and the handle resets the pendulum Back to the swing, the two hens mounted on the pole are scrambling for rice. Using materials Three plywood; Each one of the iron wire; Grease box; A piece of lead or other heavy weight; A piece of twine. Make a way Make wooden frames: Saw two long 100 Mm, wide 55 The triplywood of mm is made front board and rear board. Saw two long 45 Mm wide, 55 The third plywood of mm is left and right board. In the plate before and after In the middle of the board, each drill has two diameters 2 A small hole in a millimeter. Note the orifice of the front and back plates to be aligned. The above The hole is the shaft of the pendulum, and the lower hole is the shaft of the handle. Use white glue for both sides Adhere to both sides of the rear board and reinforce with a small nail. The front plate is not installed for the time being. To make a pendulum: find a long wire and turn it into a pole. The short end is put in a washer, Use tin to weld and then pass through the holes in the rear panel. The long end also comes in a washer, and then Pierce the upper hole in the front plate. Use white glue to glue the front and left sides of the board with the small nail A prison. Put the washer on the back of the front plate. The two gaskets on the shaft of the pendulum are limited Swing the shaft of the shaft. Then bend the wire out of the front plate into a guide slot. It's about the length of it 200 A millimeter of wire makes a pendulum. Put a grease box on the end of the pendulum. The final push by hand A pendulum hammer to see if it is flexible. If not, check if the pendulum is on In a straight line, the position of the two gaskets prevents the swing of the pendulum. To make wooden frames: saw a long one 100 Mm wide, 45 The triplywood of mm is made of wooden frame, Dig a square hole in the middle, then glue it to the wooden frame and polish it with sandpaper. Make a crank. Bend a piece of wire into a handle shape. The long one is inserted from the guide slot The bottom hole is inserted into two washers and then inserted into the rear panel. The two washers are placed before and after Near the board, and use tin solder to set the limit effect. The handle should be flexible in the guide slot and To swing the pendulum. Install heavy weight: one end of the string is tied to the crank shaft, and the other is a block of lead or Other heavy objects. To make a double chicken: draw two chickens in a picture paper and paste them in paste Stick on the cardboard. When dry, cut down the two chickens and stick them to the poles. Then use Make a feed basin with two soda bottles and glue them to the sides of the hen. Using methods Holding a wooden frame in one hand, the weight of a heavy hammer. The other hand rotates the handle to make the power rope Wrap it around the crank shaft, then let go of the handle of the handle, and the hammer will fall, turning the crank shaft Turn. The handle swung and swung, and the two chickens pecked rice at the same time There is a rhythmic bump between the handle and the guide slot. Until the weight of the weight is down to the lowest level Disappear, the pendulum stops swinging. If you hang it on the wall, it looks like a fancy wall clock. Put some iron in the grease box The heavy objects such as dust and sand grains can be removed by the center of gravity and prolong the period of oscillation. The blink of an owl figure 45 The pendulum swings back and forth, and the owl takes turns His eyes were blinking, his left eye was bright, his right eye was bright, and he was cute. Using materials Board 3 pieces; A piece of wire; A grease box; A number of pieces of copper and wires; Flashlamp, the light Two pairs of; 1 Number one cell. Make a way Wood structure: saw a long piece 170 Mm wide, 90 The plank of millimeter board is floor board. Saw a Block length 190 Mm wide, 65 The plank of mm is upright panel, use white glue on the bottom board, use The two nails are nailed down from the base to the panel. If it's not strong enough, you can still be in the upright panel Stick a square stick with white glue at the border of the bottom plate. Also, saw a long one 65 Mm wide, 40 The plank of the millimeter is made of a single board, fixed with white glue and nail to the top of the upright panel. Make an owl: in the long 150 Mm wide, 95 On the paper of the millimeter, as shown in the picture The child drew an owl and painted it. Then glue it to the cardboard. Cut down the owl Let's stick to the vertical panel. Drill two holes in the owl's eyes, and drill down and put in a small electric pearl light Seat, then install two 1.5 V flashlamp. Make pendulum hammer: use grease box for pendulum. Drill two small holes into the edge of the grease box A wire, with iron filings or sand grains. Grease boxes should be removed from the wire and used Change the oscillation period. Installation of contact copper: Cut three elastic pieces of copper to make the middle brass. copper 1 And copper 2. Fix them under a single board under a small nail. Weld the swing bar on the middle brass plate, copper slice 1 And copper 2 It's about the distance of the middle piece 5 ~ 6 Mm, the intervals are equal to each other. Connect circuit: make a pair of battery clip with elastic copper piece, fixed on the bottom board. According to the figure 45 b Connect the circuit with a wire. In order to look good, the conductor's direction should be noticed parallel to the side of the board. After the circuit, the toy is done. Using methods the 1 The battery is placed in the battery clamp. Use the hand to push the pendulum, swing the pendulum, and take turns A touch of copper 1 And copper And the owl's eyes twinkling in turn. Until the pendulum is lowered, then Touch less than copper 1 And copper 2 So far. Adjust the height of pendulum, can change the oscillation period, pendulum The hammer is raised, the pendulum is accelerating, the pendulum is lowered, and the pendulum is slowing down. The obedient "magic box" figure 46 The flat and round box is an obedient "magic box". It had a string in the middle. When you put the string up and say "move", the "magic box" slides down from above. say "Stop", and the "magic box" will stop on a string. Using materials A grease box; Two gasket; String a; A small piece of plastic. Make a way Make a box: find a small round box that holds the grease, and make one at the center of the box and bottom of the box A small hole. In order to smooth the hole around the hole, the hollow rivet can be riveted in the hole. To make the barrier: find a piece of plastic that is slightly longer than a grease box Drill a small hole in the center and polish the holes. Then you put the barrier in the oil Fat box. Assemble: take a long one 600 The tenacity of a millimeter, through three holes in turn. then Place a washer or button at the ends of the string. Weld the lid and the bottom of the box with solder Come, the secret of "magic box" is not easy to leak. Principle description Because two small holes in the grease box and the holes in the barrier are not in a straight line, tighten When the string is thin, the string in the box is triangular, and it just gets stuck in the grease box, so no To decline. If the string is relaxed, the grease box will be in the force of gravity, along the slack The rope slides down slowly. When performing, you have to give the little box a password: "Move!" "Stop!" The man who didn't know it thought it was a "magic box." ! You chase my little plane figure 47 a It's an active little airplane with rubber bands. Four little planes circled one axis It's fascinating to chase me around. Using materials Plastic bottle one; Plastic cover one; One of the toothpaste covers; There are three rubber bands; Drawing paper and fine A number of wire. Make a way Make a small plane: drill four small holes in the side of a plastic bottle and two sides of the hole On the diameter of the bottle cap. Two long holes were inserted in four holes 180 A millimeter of wire, wire The two sides are bent at right angles, and the four small planes are glued to the top. The paper plane's shearing method is shown 47 b. Make the handle: find a plastic bottle for the handle and make a hole in the bottom and the lid of the bottle. To install rubber bands. To install rubber bands: place three rubber bands in parallel and cross plastic bottles from top to bottom Cover, toothpaste cover and plastic bottles, and then hold the ends of the rubber band with a stick. So, you run after me The little plane was made. The game Hold the plastic bottle in your left hand, rotate the wire in one direction with your right index finger, and tighten the rubber band. Let go of your right hand, and the four little planes are running after me, as if they were in the air Fighting! The first grade of primary school, the first grade, the third grade, grade 62. The boat that can sail in the basin The ship model sails, generally requiring larger water surface. But the figure 62 a The boat can be in the face The basin is in a circle. It's fun and it's not hard to do. Using materials A plastic pill bottle; The motor is used to choose the one between the two sides of the motor shaft Kind of; 5 The battery one; Cork two; A number of plastic sheets; A piece of pen core. Make a way Make paddles and balance wheels: both corks are processed into diameters 40 Mm thick, 15 Mm. One of the corks was a paddlewheel, and saw eight slots in the wheel with a hacksaw blade. do 8 Running time 20 Mm wide, 10 Millimeter plastic sheet (see picture 62b) the cork is inserted separately 8 In a slot, insert 10 Mm, revealing 10 Mm, as shown in figure 62 c. Another corks balance Wheel, the balance wheel is mainly balanced. Install the motor: make two axle holes in the appropriate part of the plastic bottle. Welding electrical tracer After the line, put the motor in the plastic bottle, and the motor shaft is out of the shaft. The motor shaft On the left side, long on tin 20 The wire of the millimeter, the right end welder is long 30 A millimeter of wire, see picture 62 d. To install the paddle wheel and the balancing wheel: on both sides of the motor shaft, a small piece of round bead pen is set, Glue the ball pen to the plastic bottle. Apply yellow between the shaft of the motor and the pen Oil, used for water proofing. Reload water wheel and balance wheel on the motor shaft. See picture 62 e. The water wheel On the right side, to prevent the paddle from slipping, bend the wire back and insert it into the paddle wheel. Connection circuit: the motor is welded in wire by wire 5 The cathode of the battery, The other one leads to a piece of wire that is welded to a wire, which is protruding from a hole in the plastic cap, and scraping the patent leather. As one end of the power switch. 5 The anode of the battery is also welded to a wire, which also comes from a plastic bottle The hole in the cover is stretched out, and the paint is scratched, as the other end of the power switch, as shown in the picture 61 e. So, the small The ship was made. Principle description Twist the protruding wire and the motor turns the paddle wheel and the balance wheel. Put the boat in the basin full of water, and the boat will keep turning. This is because of the left and right wheels Is different. The balance wheel on the left is very small, mainly balancing. On the right paddle wheel There is a blade, and it moves backwards and forwards when it rotates, and the water gives the blades a counterforce and pushes the boat The right forward. In this way, The boat kept turning counterclockwise. Electric "frisbee" figure 63 a It's an electric frisbee. It hung a wooden stick in half space with a thin thread In the middle, the stick will be made to rotate as soon as possible, like a "frisbee". Using materials Stick a root; An electric motor; 5 The battery one; Copper, iron, and wire. Make a way Make a frisbee: find a long one 400 Mm wide, 10 A millimeter of wood makes a frisbee. Drill a hole in the center of the stick. Cut a small piece of iron and drill a hole in the center of the iron. The iron is nailed to the stick, and the holes of the iron are pointed at the hole in the stick. The attached piece of iron is for Increase the wear resistance of the stick hole. In a thin wire, in a small hole, at both ends of the wire Make a small circle. Make a hanger: use a thick piece of iron for a hanger 63 c. At the ends of the hanger, Each drill a hole. The top of the hanger is fastened to the ceiling. Down the hanger, Find a thin wire thread in a small hole and make a small circle at the ends of the thin wire. With a string, One of them was tied to a small circle of iron wire, and the other was on a small circle of "frisbee". To install the motor: make a rectangular casing in a piece of iron to adjust the motor to the stick The position of the top, the diagram 63 d. Make a motor clip with an iron plate to hold the motor to the long side In the casing, the diagram 63 e Make a propeller with a piece of iron and twist the two blades 25 ? to 30 ?. The center of the propeller bore a small hole, and the propeller was welded to the shaft of the motor. Make a battery clip: make a battery clip with elastic copper. To prevent the battery from turning When moving, make a hooked clip with elastic copper pieces 63 b. The clip On one side of the stick, fix the stick on the stick and bend it slightly to get the battery. Connection circuit: connect the induction piece of the motor with the battery clip with two wires. guide The line should be slightly longer so that the rectangular casing can be adjusted back and forth on the stick. Test method the 5 When the battery is loaded into a battery clip, the propeller will turn quickly and the stick will spin Turn. If the stick does not rotate on the horizontal surface, it can move the long side like the weight of a pole Form the casing until the stick spins on the horizontal surface. That way, the frisbee is done. Such as The "frisbee" is made of small rings, thin iron sheets and small holes in the "frisbee". It's going to be more flexible. Principle description The propeller is spinning at high speed, pushing the air backward, and the propeller is adversely affected by the air Force, push the stick forward. This is the same thing with propeller planes flying in the air. "Fly The rotation velocity of the disc is related to the area of the propeller, the rotation speed and the rotation Angle of the blade You can change propellers and do a variety of experiments and learn a lot. The robot flipped the bar The gymnastics is gripping. The gymnasts will turn round and turn like windmills It's amazing. Let's look at the picture 64, do a robot flip. The robot The ring of the rings is all right, and no worse than a gymnast. Using materials An electric motor; Copper pipe two; Or two pieces of thick copper wire; A piece of board; 5 Two batteries Section; Iron and copper pieces. Make a way To make robots: two lengths 70 Mm wide, 50 The thin planks of mm make the body of the robot Use sandpaper to smooth the plate before and after the dry. Use a square stick to make the neck of the robot Set it on the front of the torso. With two root diameter 3 Mm long, 50 A copper tube (or copper wire) of a millimeter. Do robotic arms. Attach the arms to the front of the torso with two pieces of copper. Use an electric motor for the head of the robot. With a long 90 A millimeter of iron bent into a circular arc, Attach the motor to the top of the square bar, as shown 64 c. Put a circular piece of paper on the back of the motor Draw a funny face on the paper. According to the figure 64d, long 65 Mm wide, 14 A piece of iron in a millimeter The propeller, the center drill a hole, welded it to the motor shaft. Use two wires to power the electric The machine is connected to the right arm of the left arm. According to the figure 64b, two long 90 Mm wide, 17 Mm thick, 5 A millimeter of wood makes a robot The lower limb. Use a piece of iron to make two clips and nail it to the bottom of the torso. The robot The lower limb is inserted into the iron clip and the lower limb can move up and down, making it easier to adjust the center of gravity of the robot. So that the robot can easily flip. Use a screw nut to set the front and back of the torso. mining The screw nut is fixed in order to open the lower limb at any time. Use a piece of copper to make two blocks, screw to the arm, so that the arm will not slide on the horizontal bar Take off, as shown in figure 64 e. Make floor and horizontal bars: use a length 200 Mm wide, 135 The plank of a millimeter, Polish the smooth with sandpaper. Cut two pieces of iron and nail them on the bottom board. Then bend two three with iron Angle iron. Welding the iron triangle to the iron plate of the base plate, the two triangular iron is separated from each other 100 Mm. Do two A piece of copper, a piece of copper on a piece of copper 3 The holes of the millimeter, then welded them to the top of the triangle End. The holes in the two pieces of copper are on a horizontal surface, as shown in figure 64 a. Make switch and battery clip: make the power switch with a flexible copper strip and iron nail Put it on the bottom board. Make two battery clips with elastic copper. So, the whole toy Make it. debugging Put the battery in the battery clip, press the power switch, the power supply is tri-iron and contact copper The electric motor, which is powered by a piece of copper tube and other electric motors, will drive the propeller's high-speed rotation. The propeller To push the air back, the air forces the propeller against the propeller and pushes the robot forward To come. If we click open, the robot will be slow to somersaults. Press the switch, The robot flips like flying. If you press the switch, the propeller is spinning, but the robot doesn't flip, Or if the somersaults don't pass, it's probably the center of the robot's center of gravity, just adjusting the lower limb Position, the center of gravity of the robot falls on the arm (axis of rotation), the failure will be ruled out. Focus fell On the axis of rotation, you can rotate the robot with little force.