A burnishing machine is provided in which both sides of a groove is machined by a single tool without changing the movement direction of a piston. The burnishing machine, includes: a tip configured to press and process a process face; and a pressurizing unit configured to press the tip against the process face, the pressurizing unit including, a piston configured to reciprocate in a direction orthogonal to the tip, a cylinder portion that accommodates the piston such that the piston reciprocates; and a pressurizing mechanism configured to urge the tip to the process face at both timing of pushing the tip against the process face and pulling the tip against the process face by making the piston reciprocate.

A burnishing machine is provided in which both sides of a groove is machined by a single tool without changing the movement direction of a piston.

The burnishing machine, includes: a tip configured to press and process a process face; and a pressurizing unit configured to press the tip against the process face, the pressurizing unit including, a piston configured to reciprocate in a direction orthogonal to the tip, a cylinder portion that accommodates the piston such that the piston reciprocates; and a pressurizing mechanism configured to urge the tip to the process face at both timing of pushing the tip against the process face and pulling the tip against the process face by making the piston reciprocate.

A tool, system, and process for finishing a cylindrical member is provided. The finishing tool includes an opening. The opening is sized to receive a cylindrical member. The interior wall of the tool opening is configured to reduce a roughness of the cylindrical member. The opening has a second cross-sectional area that is less than the cross-sectional area of the member. A retainer can secure the member. In response to the opening interior wall slidably contacting a finishable area of the member as the finishing tool is moved relatively closer to the member at a relative force, the roughness of the finishable area of the member is reduced to a second roughness.