![]() Use the dowel to mount the gripper on an arm assembly.Use (6/32)” x ¾” bolts and nuts to secure it.Drill 2 small mounting holes to keep the dowel in place.Place the cable through the hole then push the dowel at least ½” into the arm.Cable maybe of center, compensate for that.Drill a hole in the dowel for the cable to go through.Fashion a 1.5” length of ¾” diameter dowel to fit into the rectangular arm.Chop off the gripper three inches below the wrist.Two-Pincher Gripper(Advanced Model 1) construction Use a readily available plastic toy and convert it into a useful two-pincher gripper for your robot arm.Connect to other end of the cables to a solenoid or a motor shaft.Thread two small cables through the eyelet and attach the cable.Mount a small eyelet between the two pivot joints on the angle grinder.You can actuate it in a number of ways.(6/32)” x ½” bolts and nuts to make pivoting joints in the fingers.Cut through two or three holes on one end to make a slot.Sand off the ends at an angle to prevent them from touching.Connect the 4.5” grinders and the 3.5” grinder using (6/32)” x ½” bolts and nuts to make two pivoting joints.Two-Pincher Gripper(Basic Model) construction ![]() Made from extra Erector Set (similar construction kits may be used).If solenoid doesn’t have mounting flanges opposite the plunger, mount it in the center of the bottom flap using household cement.Must operate within the voltage used in your robot (usually 6V or 12 V).Must have a flat bottom to facilitate mounting.Place bracket ~ (1/8)” from either side of the flap.Attach the lower flap to both corner brackets.Cut both acrylic plastic to 1.5” x 2.33” pieces. ![]() When solenoid is not active, gripper is open.When solenoid is active, gripper is closed.Small spring-loaded solenoid is positioned between the two plates.Connected to the writ are 2 plastic plates.Consists of a wrist joint (assume permanently attached to forearm of robot). ![]()
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