A high-precision balanced sapphire double-sided grinding machine

Abstract

The invention relates to a high-precision balanced-type sapphire double-surface grinding machine. The machine comprises a bottom frame (12), a gantry column (1), a lower plate system (13) and an upper plate system (10). The upper plate system and the lower plate system are arranged on a spindle shaft (6) in a sleeving mode and capable of rotating coaxially. A balanced-type upper-plate device sleeved on the spindle shaft is arranged above the upper plate system. A planetary gear decelerator (5) downwardly extending along an output shaft is arranged on a crossbeam of the gantry column. A gear of the planetary gear decelerator at the lower end of the output shaft is engaged with a gear (11) arranged at the lower part of the spindle shaft in a sleeving mode. One side of the crossbeam of the gantry column is provided with a transverse lead screw (16) and a pair of linear sliding rails (12). The lead screw is equipped with a nut seat which is firmly connected with a sliding saddle (15) horizontally sliding along a linear sliding rail. The outside of the crossbeam is provided with a servo motor (18). An output shaft of the servo motor is connected with the lead screw. The lower end of the sliding saddle is connected with a transverse knife rod (19). The front end of the transverse knife rod is provided with a knife chuck (20) and upper and lower knives (14). The high-precision balanced-type sapphire double-surface grinding machine is simple in structure, reliable in performance and easy in operation and control.

Description

technical field [0001] The invention relates to the technical field of sapphire grinding machines. Background technique [0002] In the existing sapphire double-sided grinding machine, the gravity balance of the upper plate is a technical problem in the high-precision grinding process. Due to the influence of gravity, the control system needs to compensate the gravity of the upper plate pressure during the processing process due to the influence of gravity, which increases the double-sided Grinding control is difficult, resulting in adverse effects on product quality. There are roughly two existing solutions: one is to correct the pressure of the upper plate through the control system during grinding, so as to ensure that the grinding pressure meets the grinding requirements of the product. The second is to add weights and counterweights outside the loading system to balance the gravity of the loading system. In the above methods, when the grinding pressure is lower than t...

AI Technical Summary

Problems solved by technology

The other is to make more complex tooling and fixtures. When the disk surface needs to be trimmed, the fixture equipment is installed on the double-sided grinding machine to perform the disk surface dressing operation. The upper and lower disks need to use different fixtures to position and repair equipment, because the whole process is two. Once completed, it is difficult to ensure the consistency of the accuracy of the surface and the bottom of the disk, and the efficiency is not high. In order to ensure the grinding accuracy of the workpiece, it needs to be calibrated again

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