Machine design drawing table

The utility model relates to a machine design drawing table, the on -line screen storage device comprises a base, the base top is provided with the pillar, the pillar includes fixed connection's the cylinder and the hemisphere face body, the lower terminal surface of cylinder and the top surface fixed connection of base, the top of the hemisphere face body is provided with the bearing, offer the recess no. 1 of the sphere that matees with the hemisphere face body on the lower terminal surface of bearing, recess no. 1 and hemisphere face body sliding connection, recess no. 1 central embedded has the magnetic base, be provided with the knob of the permanent magnet direction in the conversion magnetic base on the magnetic base, the knob is located the recess no. 2 of the side of bearing, theup end of bearing links firmly the desktop, and on adjacent two sides a fixedly connected with supporting bench no. 1 and a supporting bench no. 2 respectively on the base, desktop and a supporting bench are provided with tel