A vacuum cleaner for removing machining debris for laser precision machining

Abstract

The invention relates to a vacuum dust absorption device used for removing machining chippings for precise laser machining. The vacuum dust absorption device comprises a dust cover and a vacuum pumping filter device. When the vacuum dust absorption device works, the contact face at the bottom end of the dust cover is attached to the to-be-machined portion of a to-be-machined workpiece, a laser emitted by a laser weight-removing device passes through anti-reflection glass and a vacuum cavity and then acts on the to-be-machined portion of the to-be-machined workpiece, weight removing is conducted on the to-be-machined workpiece, and dust generated in the weight-removing process is absorbed by the vacuum pumping filter device. A locally-surrounded dust absorption structure is put forward for the first time, a machining area is separated from a gap between a stator and a rotor of the workpiece so that a pollution source cannot enter the gap, pollution to the interior of the gap is avoided, the pressure of the contact face between the vacuum dust absorption device and the machining workpiece is small, and therefore it is guaranteed that no extra action force is generated between a stator and a rotor of a high-speed rotating device.

Description

technical field [0001] The invention relates to a vacuum cleaning device for precision machining to remove processing debris, which is used for a high-precision laser de-weighting system to realize the protection of pollutants and the blocking protection of micron-level particles, and belongs to the technical field of dust collection. Background technique [0002] With the continuous improvement of the precision and stability of high-speed rotating devices (such as air bearings, etc.), the precision and process requirements for rotor dynamic balance are also getting higher and higher. Dynamic balance is essentially accomplished by changing the mass distribution of the rotor. The laser dynamic balancing machine uses pulsed laser instead of mechanical drill to drill holes to remove the partial weight of the unbalanced rotor and complete the precise adjustment of the rotor's center of mass. The debris particles produced by pulsed laser drilling are small and low in weight, and ...

AI Technical Summary

Problems solved by technology

This method has very significant disadvantages: In order to expand the vacuuming window, the vacuum cleaner port uses a bell mouth structure, which disperses the power of vacuuming, and some heavy metal debris cannot be sucked into the vacuuming pipe, and the vacuuming is not thorough and cannot be removed. Micron-sized dust; the airflow near the suction port is complicated, and some debris will be blown by the convective airflow, causing pollutants and debris particles to diffuse into the working environment, damaging the health of equipment and staff

In addition, in order to ensure the airtightness of the vacuum chamber, there is generally a large contact pressure between the vacuum chamber and the workpiece of the vacuum device, and the force between the rotor and the stator of the high-speed rotating device is not allowed to exceed 1N, so this dust suction Method not suitable for high speed rotating devices

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