The Manufacture is an important support of economic development in a country or area. Its level of development stands for the economic power, technical and scientific level, living standard and national defensive power of the country or area. While the capability of production in trade of manufacture mostly depends on the advanced producing equipment-machine tool .
This paper has carried out detailed analysis for the case cover processing technology of gear reducer that joins hole, the processing for its hole have put forward the train of thought of " once pack folder, work position is processed , reach the precision requirement of product pattern ".According to this train of thought , have designed the four-axle first work drilling machine of bit alignment.
This paper presents the design and calculating of each part of this machine tool.