CASTING METHOD OF METALLIC PATTERN HOLDER

摘要

PURPOSE:To obtain a lightweight holder which can clamp strongly a metallic pattern in the stage of attaching the same without the injury by debris, etc. in the stage of machining such as finishing and the consequent deviation in size by disposing iron plates for reinforcement in the position of the C-shaped metallic pattern holder corresponding to the lower arm part thereof and casting an Al metal. CONSTITUTION:A core 15 consisting of a wear-resistant metal is disposed in the position of the metallic pattern holder 1 in a casting mold 13 corresponding to the mounting position of a punch 9 and a die 11. Two sheets of the iron plates 21 for reinforcement are disposed to the center of the position corresponding to the lower arm part 5 of the holder 1 in the mold 13 in the state of maintaining the specified parallelism and height by means of bolts 23. The bottom surface of the plates 21 is made flush with the bottom surface of the lower arm part 5. A wooden core 27 for forming a slot part 25 to pass a bolt for the purpose of fixing the holder 1 to a press machine is held in place between two sheets of the plates 21 and a core 31 for forming a space part is placed thereon. A core 33 for forming the slot part is place thereon. Al or Al alloy is cast through a pouring port 37 into the mold 13.