Double face abrading machine and device for transmitting current and fluid between a rotary structure and a non-rotary structure

Claim 1

A machine for abrading simultaneously parallel, opposite planar faces of workpieces, said workpieces being carried in disk-shaped supports arranged about a vertical axis as satellites, each of said satellites being provided with external teeth and having a smaller thickness than a thickness of said workpieces, said machine comprising: a support frame including a sleeve carried by said support frame and a body removably carried by said support frame; a lower horizontal annular plated supported by said support frame and being rotatable about said axis, said lower plate supporting at least three of said satellites during a carrying of the workpieces to be abraded; means for rotating said lower horizontal annular plate; an external gear and a central gear supported by the support frame coaxially about said vertical axis, each of said gears meshing with the external teeth of said support satellites, at least one of said gears being rotatable around said vertical axis; means for rotating said at least one gear; an upper horizontal annular plate above said lower plated supported by the support frame and being rotatable about said vertical axis; means for rotating said upper plate; means for applying a working pressure to said upper plate along said vertical axis, in order to press the workpieces between said upper and said lower plates; means for moving said upper plate away from said lower plate, in order to bring said machine to an open position; fluid transmission means located between said support frame and said upper and said lower plates, said fluid transmission means including first fluid pipes carried by said support frame, and second fluid pipes ending at said upper plate; and wherein said machine further comprises a head made of components which are interchangeable without a dismantling of said support frame, said components comprising: a first element which includes said upper plate and a support member connecting said upper plate to said frame; a second element including a first rotary drive column removably fixed to said support member and rotatably received in said sleeve carried by said support frame; and a third element having a central rotary part removably fixed to said first rotary drive column and rotatably received in said body carried by said support frame, said third element being a part of said fluid transmission means for connecting said first fluid pipes to said second fluid pipes via passage means provided in said body, said central rotary part, said first rotary drive column and said support member.

Claim 19

A device for transmitting electric current and fluid between a rotary structure and a non-rotary structure having a common axis, wherein the rotary structure carries electrical instruments and first electronic processing means remote from said electrical instruments, there being an axial passage provided in said rotary structure; said device comprising electric conductors disposed in said axial passage and connecting between first electronic processing means and said instruments; a power supply carried by said non-rotary structure; a rotary transformer located on said common axis, said transformer having a primary winding fixed to the non-rotary structure and a secondary winding fixed to the rotary structure and facing the primary winding, the primary winding being electrically connected to said power supply and the secondary winding being electrically connected to said electronic processing means; a second electronic processing means carried by said non-rotary structure; a transmitter-receiver system located on said common axis, a transmitter of said system being fixed to said rotary structure and electrically connected to said first electronic processing means, and a receiver of said system being fixed to said non-rotary structure and electrically connected to said second electronic processing means; and a group of peripheral fluid passages provided within said rotary structure around the axial passage, and a set of radial fluid passages provided in the non-rotary structure, each said peripheral fluid passage issuing via axially spaced grooves in said non-rotary structure into said radial fluid passages.

Claim 20

A device for transmitting electric current and fluid between a rotary structure and a non-rotary structure having a common axis, wherein the rotary structure carries electrical instruments and first electronic processing means remote from said electrical instruments, there being an axial passage provided in said rotary structure; said device comprising electric conductors disposed in said axial passage and connecting between first electronic processing means and said instruments; a power supply carried by said non-rotary structure; a rotary transformer located on said common axis, said transformer having a primary winding fixed to the non-rotary structure and a secondary winding fixed to the rotary structure and facing the primary winding, the primary winding being electrically connected to said power supply and the secondary winding being electrically connected to said electronic processing means; a second electronic processing means carried by said non-rotary structure; a transmitter-receiver system located on said common axis, a transmitter of said system being fixed to said rotary structure and electrically connected to said first electronic processing means, and a receiver of said system being fixed to said non-rotary structure and electrically connected to said second electronic processing means; and a group of peripheral fluid passages provided within said rotary structure around the axial passage, and a set of radial fluid passages provided in the non-rotary structure, each said peripheral fluid passage issuing via axially spaced grooves in said non-rotary structure into said radial fluid passages.