Abrading machine

A machine for abrading a workpiece, the machine comprising:

• a housing extending along a rotation axis and having a housing fluid pressure transmission membrane at one end of said housing, said housing being rotatable about said rotation axis;
• a head releasably mounted on said end of said housing, said head comprising a head housing, a head fluid pressure transmission membrane, and a resilient membrane forming a sealed head fluid chamber filled with fluid, said head fluid pressure transmission membrane being arranged in said head housing to cooperate with said housing fluid pressure transmission membrane to transmit pressure to said head fluid chamber, and said resilient membrane being held at a periphery thereof by said head housing to extend bulbously therefrom for the application of pressure to said workpiece during abrading.

A tool head for releasably mounting on a housing of a machine for abrading a workpiece, the housing having a housing fluid pressure transmission membrane, the tool head comprising:

• a head housing, a head fluid pressure transmission membrane and a resilient membrane forming a sealed head fluid chamber for holding fluid, said head fluid pressure transmission membrane being arranged in said head housing to allow the coupling of fluid pressure in said head fluid chamber from said housing fluid pressure transmission membrane, and said resilient membrane being held at a periphery thereof by said head housing to extend bulbously therefrom for the application of pressure to said workpiece during abrading.