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In this paper, a new desktop Cartesian-type (orthogonal-type) robot, which has abilities of compliant motion and stick-slip motion, is presented for lapping small metallic molds with curved surface. The size is 850 mm width, 645 mm depth and 700 mm height. The robot consists of three single-axis devices with a high position resolution of 1 μm. A thin wood stick tool is attached to the tip of the z-axis...
In manufacturing industries of metallics molds, various NC machine tools are used. We have already proposed a desktop NC machine tool with compliance control capability to automatically cope with the finishing process of LED lens molds. The NC machine tool has an ability to control the polishing force acting between an abrasive tool and workpiece. The force control method is called impedance model...
In this paper, a new desktop orthogonal-type robot with a CAD/CAM-based position/force controller is presented for finishing small metallic molds with curved surface. The robot consists of a three-axis robot whose single one has a high position accuracy of 1 mum, which means that it can perform higher resolutions of position and force, compared to general industrial robots. A thin wood stick tool...
This paper proposes a new user interface that provides a multi-valued, linear output according to fingertip pressure. Our proposed interface uses a strain sensor to detect microscopic strain caused by fingertip pressure on the chassis of a portable information terminal unit. An experimental prototype, consisting of a detection circuit with two strain gauges and an embedded MPU, was manufactured to...
In this paper, a new desktop NC machine tool with compliance controllability is presented for finishing metallic molds with small curved surface. The NC machine tool consists of three single-axis robots with high position resolution. A tool attached to the tip of the z-axis has a small ball-end shape. Also, the control system of the NC machine tool is composed of a force feedback loop, position feedback...
This paper proposes a new user interface that supplies a linear multi-value output in proportion to fingertip pressure. The principle of our proposal is to use a strain sensor to detect the strain of a chassis of a portable information terminal caused by fingertip pressure. An experimental model consisting of a detection circuit using a strain sensor and an embedded MPU was built to verify the operation...
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