Clamping device for cylindrical work-piece line cutting machining

The invention discloses a clamping device for cylindrical work-piece line cutting machining. The device comprises a rectangular base, a first L-shaped support and a second L-shaped support. The first L-shaped support and the second L-shaped support are fixed at the two ends of the upper side of the rectangular base respectively. A V-shaped cushioning block is fixed on the first L-shaped support, a sliding support is in arranged on the upper side of the rectangular base, a V-shaped compression head is fixed at the upper end of the sliding support, a location plate is fixed on the upper side of the rectangular base, one end of a screw penetrates an unthreaded hole of the second L-shaped support and a threaded hole of the sliding support to be hinged to the first L-shaped support, and a drive handle is arranged at the other end of the screw. The clamping device has the advantages of being reasonable in design, simple in structure, high in machining accuracy, capable of facilitating work-piece dismounting, low in labor intensity, high in production efficiency, long in service life, low in production cost and convenient to promote and use.