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Experimental Study on Effect Ultrasonic in Incremental Forming Process
Darisuren Shirmendagva,Seimi Choi,J.P.B.A Sembiring,Choongho Sanseong,Junsuek Ro,A. Amanov,Y.S. Pyun 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.5
The spring-back effect during Incremental forming still becomes a concern because affects the dimensional accuracy of the finished part. To resolve it, ultrasonic vibration was introduced to incremental forming process. The addition ultrasonic during incremental forming was reported reducing the spring-back effect, decreasing the force for forming and increasing tool life due to reduced friction. In this experimental study, the comparison between conventional incremental forming. Ultrasonic Assisted incremental forming and Ultrasonic incremental forming was done. The results showed there is no significant difference between the conventional incremental forming process and ultrasonic incremental forming in terms or dimensional accuracy and surface finish. Therefore, the elimination of rotation spindle could be done which possibly reduce cost of device and operation.
J.P.B.A Sembiring,Seimi Choi,Choongho Sanseong,Junsuek Ro,A. Amanov,Y.S. Pyun 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.5
The existing ultrasonic assisted grinding used for machining hard and brittle material still has some drawbacks, such as low material removal rate rapid tool wear and low quality of surface finish. To resolve those problem, a retrofit idea of existing concept is propose. In this paper, an idea to retrofit the existing ultrasonic assisted grinding machining center is proposed by changing the spindle design, tool tip and the modification of ultrasonic transducer. The consideration behind design changing and modification of existing concept will be discussed. Due to the design changing and modification, the capability of high speed rotational machining and the elliptical tool motion of 2D Vibration Assisted Machining (VAM) are expected to be obtained. Due to the elliptical tool motion, it is expected that the cutting force can be reduced, extension of tool life, capability to cut the brittle material in ductile regime and improvement surface finish can be obtained.