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[CN 201810455877.8] Incremental forming variable pressure machine tool fixture and blanking force control method thereof
[CN 201810455877.8] an incremental forming variable pressure machine tool fixture and its blank holder force control method title: an incremental forming variable pressure machine tool fixture and its blank holder force control method application number: CN 201810455877.8 applicant: Nanjing institute of technology application date: 2018-5-14 patent type: invention application the present invention discloses an incremental forming variable pressure machine tool fixture, including a number of guide posts (2), the upper and lower ends of all the guide posts (2) are respectively provided with an upper pressing plate (5) and a support bottom plate (1), the lower pressing plate (3) is movable between the support bottom plate (1) and the upper pressing plate (5), and the cup cover type floating top block (6) is connected with the lower surface of the lower pressing plate (3), the center of the cup cover type floating top block (6) is provided with a first threaded hole, the first threaded hole is fixedly connected with a thread nut on the lead screw (7), and the lead screw (7) passes through the The thread nut, the bottom end of the lead screw (7) is connected with the transmission system. The invention also discloses a method for controlling the blank holder force of the incremental forming variable pressure machine tool fixture. The invention realizes the up and down floating of the lower pressure plate and the automation of the clamping plate material, and at the same time facilitates the filling of the material during processing, prevents the cracking of the plate material during the processing, and can significantly improve the forming limit of the plate material.
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