Floating main shaft

Abstract

The invention provides a floating main shaft which comprises an electric main shaft. The electric main shaft penetrates through a first piston ring, a displacement sensor is arranged at the position close to the tail end of the electric main shaft, and a first shell is arranged outside the first piston ring. A sealing device is arranged between the first piston ring and the first shell, so that afirst sealing space is formed between the first piston ring and the first shell, and the sealing space communicates with a first vent hole. The electric main shaft deviates from the length direction of the electric spindle by a certain angle, so that the first piston ring moves in the direction close to the tail end of the electric spindle, and the displacement sensor detects the moving distance of the first piston ring. The first vent hole is ventilated, so that the first piston ring moves and resets close to the top end of the electric main shaft. By means of the technical scheme, impact andcollision to the electric main shaft in the workpiece grinding process can be avoided, and the electric main shaft is effectively protected.

Description

technical field [0001] The invention relates to the field of workpiece grinding, in particular to a floating spindle. Background technique [0002] The existing grinding equipment on the market is mostly equipped with a non-floating spindle. If the riser and flash of the casting are large, this kind of hard grinding is easy to produce over-grinding and undergrinding. When over-grinding, the cutting force of the grinding wheel will increase instantaneously, causing the electric spindle to be overloaded by current and burn out the electric spindle; when under-grinding, the dimensional consistency of the casting after grinding cannot be guaranteed, and secondary rework is required, which is difficult Realize high-volume automatic finishing. Contents of the invention [0003] The object of the present invention is to provide a floating spindle, which can avoid impact and collision with the electric spindle during workpiece grinding, and effectively protect the electric spindl...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing grinding equipment on the market is equipped with a non-floating spindle. If the riser and flash of the casting are large, this kind of hard grinding is easy to produce over-grinding and undergrinding

When over-grinding, the cutting force of the grinding wheel will increase instantaneously, causing the electric spindle to be overloaded with current and burn out the electric spindle; when under-grinding, the dimensional consistency of the casting after grinding cannot be guaranteed, and secondary rework is required, which is difficult Automated finishing of large batches

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