A laser cladding head component with adjustable cladding trajectory

Abstract

The invention discloses a laser cladding head assembly with an adjustable cladding track. The laser cladding head assembly is characterized in that a cladding head is mounted on a vertical adjusting device which can drive the cladding head to move up and down in the vertical direction; a lens is arranged in the cladding head; the lens and the cladding head are coaxially arranged; a powder feeding pipe is mounted on the cladding head through an angle adjusting device which can adjust the included angle between the powder feeding pipe and the cladding head; an extension line of the central axis of the powder feeding pipe and an extension line of the central axis of the cladding head are intersectant; the vertical adjusting device comprises a fixedly arranged first screw rod motor; a first nut matched with a first output shaft is arranged on the outer wall of the cladding head; the first output shaft meshes with the first nut, and the cladding head is driven to move up and down; the angle adjusting device comprises a second screw rod motor and a second nut; the end, close to an outlet, of the powder feeding pipe is hinged to the outer wall of the cladding head; the end, close to an inlet, of the powder feeding pipe is hinged to the outer wall of the second nut; and the second nut meshes with a second output shaft of the second screw rod motor.

Description

technical field [0001] The invention relates to a laser cladding head component with adjustable cladding track. Background technique [0002] The coaxial cladding head is a commonly used laser cladding processing tool. The structure of the traditional coaxial cladding head is: the fixed lens group passing through the central axis converges the laser beam, and the powder feeding flow symmetrically distributed along the same central axis The laser beam and the powder flow are converged on the same axis. The laser converging point and the powder converging point of this traditional coaxial cladding head are fixed, therefore, the adjustment and change of the section width at different positions cannot be realized on one cladding track. [0003] Thin-walled complex parts such as blades have the characteristics of thin walls, complex cross-sectional tracks, and cross-sectional widths that vary with the track. When using traditional coaxial cladding heads for cladding manufacturin...

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Problems solved by technology

[0004] Although the above method of the Fraunhofer Laser Institute in Germany can change the width of the cladding track by changing the spot size at different positions on the track, it does not adjust the powder delivery volume and The location of the powder delivery, which will cause fluctuations in the height of the cladding track and instability of the cross-sectional shape; in addition, because the high-power laser beam passing through the lens will cause heat accumulation on the lens, this solution uses a servo motor to drive the lens to move. Facilitates the placement of heat sinks in a small space inside the cladding head, thus limiting the power of the laser beam passing through the lens

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