Clamping mechanism and five-axis head motorized spindle

Abstract

The invention discloses a tool loosening mechanism and a five-axis electric spindle, which relate to the technical field of mechanical manufacturing and include a pull rod, which is slidably arranged at the axial center of the spindle, and a clamping assembly is used to accept the drive of the pull rod to loosen or clamp the tool. Knife, the hydraulic device is used to drive the pull rod to slide along the first direction to release the clamping assembly, and the disc spring set restores the deformation process to drive the pull rod to slide along the second direction so that the clamping assembly clamps the knife, the first direction and the second direction For the opposite direction, each disc spring of the disc spring group is stacked in pairs and then combined. The hydraulic device of the present invention drives the clamping assembly to release the knife through the pull rod, and the elastic force of the disc spring group can make the clamping component clamp the knife through the pull rod. The required broaching force has good buffering and shock-absorbing capabilities. Due to the frictional resistance of the superimposed disc spring surface, the effect of absorbing impact and dissipating energy is more significant, which is conducive to improving machining accuracy.

Description

technical field [0001] The invention relates to the technical field of mechanical manufacturing, in particular to a tool loosening mechanism and a five-axis electric spindle. Background technique [0002] With the rapid development of various industries such as aerospace, aerospace, molds and automobiles, the technology of CNC machine tools has been further improved, and five-axis electric spindles with high speed, precision, efficiency and high reliability have emerged as the times require. In this form, it is of practical significance to study the development trend of five-axis head electric spindle, which highlights the advantages of five-axis linkage machining technology. [0003] The five-axis head electric spindle is the core component of the five-axis linkage CNC machine tool. The rationality of the structure of this component directly affects the processing quality of the workpiece. This requires that the reliability of the spindle loosening action must be guaranteed...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the commonly used main shaft loose broach structure uses a rectangular coil spring. In the case of long-term frequent tool changes, once the spring fatigue breaks, the pulling force will fail, and the tool will be thrown away, causing danger. At the same time, the main shaft When rotating at high speed, the coil spring vibrates under the action of centrifugal force, which affects the machining accuracy

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