| 摘要 |
The present invention relates to a device for manufacturing a groove formed on a bore of a cylinder block, comprising: a first rotating part which provides a rotational force; a second rotating part which rotates by the rotational force conveyed from the first rotating part and which is connected to the first rotating part to change the position of rotational axis; a contacting part which is installed in the second rotating part and which matches the rotational axis of the second rotating part with the central axis of a bore by coming in contact with the surface forming the bore when the second rotating part enters the bore; and a blade part which is installed in the contacting part and which forms a groove on the surface forming the bore by rotating by the rotational force conveyed from the second rotating part under the state where the rotational axis of the second rotating part matches the central axis of the bore by the contacting part in contact with the surface forming the bore. Accordingly, provided is the device for manufacturing a groove formed on a bore of a cylinder which can form a groove with a certain depth on the surface of the bore of the cylinder. |
