Machining equipment for large-radius arc surface on piano rib

Abstract

The invention relates to machining equipment for a large-radius arc surface on a piano rib. The machining equipment comprises a machining table, a first circular plate fixedly connected to the top of a mounting plate located on the rear side, a second circular plate fixedly connected to the top of a mounting plate located on the front side, and a grinding wheel movably connected between the first circular plate and the second circular plate. The grinding wheel slides along a first annular sliding rail while rotating. A servo motor drives an input shaft to rotate forwards and backwards, the grinding wheel connected with a second output shaft is driven to rotate at a high rotating speed, and meanwhile, a gear connected with a first output shaft rotates at a low rotating speed, and meshing of the gear and an annular gear is matched, so that the gear moves back and forth along the surface of the annular gear; and therefore, when the grinding wheel is controlled to rotate at a high rotating speed, the axis of the grinding wheel slides in a reciprocating mode along an arc-shaped track a, then the piano rib slides from right to left along a feeding groove till the piano rib abuts against the left end surface of the feeding groove, and the purpose of polishing the arc-shaped surface of the piano rib is achieved.

Description

technical field [0001] The invention relates to the technical field of wood processing, in particular to a processing device for large-radius arc surfaces on piano ribs. Background technique [0002] Wood processing generally refers to the process of cutting trees and other wood into desired shapes. In the processing and production of pianos, it is necessary to process the wooden parts of the piano, such as the cover plate and ribs of the piano, and the two ends of the piano ribs. There are two curved surfaces with large radii, and the curved surfaces that have been cut and roughly shaped by the ribs are often manually polished and continuously corrected to obtain the required curved surfaces. [0003] After retrieval, the Chinese patent with the publication number CN103341815B discloses a processing equipment for large-radius arc surfaces on piano ribs, including a frame, a workbench, a power wheel, a tensioning wheel, a profiling grinding head, an abrasive belt and a power...

AI Technical Summary

Problems solved by technology

The processing equipment for the large-radius arc surface on the piano ribs of the present invention has the advantages of high work efficiency, high precision and low labor intensity, but the profiling grinding head therein will rub against the abrasive belt during the processing, and the processing time After a long time, the diameter of the curved surface of the profiling grinding head will decrease, and the thickness of the abrasive belt will also decrease, so that the accuracy of the curved surface of the subsequent processed ribs cannot meet the requirements, and the abrasive belt is easy to replace. However, its profiling The grinding head needs to be specially made, and a profiled grinding head of one specification can only process piano ribs of a certain size, which is difficult to meet the processing requirements of piano ribs of all sizes. Raw materials will increase

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