Grating ruling engine and nut weight reduction device thereof

Abstract

The invention discloses a nut weight reduction device. The nut weight reduction device is used for reducing the weight of a nut connected with a workbench when the nut moves linearly on a lead screw. The nut weight reduction device comprises a support, a guide rail, a tackle mechanism, a driving device and a weight reduction assembly. The tackle mechanism can move linearly along the guide rail. The weight reduction assembly connected with the nut is connected with the tackle mechanism. When the nut moves on the lead screw, under the action of the driving device and the workbench, the tackle mechanism is made to move synchronously along with the motion of the nut, then the effect that the nut weight reduction assembly moves along with the nut is achieved, the situation that the nut and the lead screw are abraded due to inclination of the weight reduction assembly is avoided, and the service life is prolonged. The invention further discloses a grating ruling engine provided with the nut weight reduction device.

Description

technical field [0001] The invention relates to the technical field of gratings, in particular to a grating marking machine and a nut weight reducing device thereof. Background technique [0002] The screw nut device is a key part of the grating marking machine, the accuracy of this device determines the accuracy of the grating marking machine indexing system, known as the "heart" of the grating marking machine. The nut weight reduction device is to reduce the weight of the nut and adjust the sealing force of the nut to the lead screw, thereby reducing vibration, friction and wear during movement, and improving the accuracy and stability of the lead screw nut. [0003] In the prior art, because the width of the grating carved by the grating marking machine is narrow, the stroke of the nut is short, and the structure of the nut weight reducing device is simple, that is, one end of the weight reducing spring scale in the nut weight reducing device is connected to the nut and t...

AI Technical Summary

Problems solved by technology

However, due to the fixed spring balance, it does not have follow-up

In practice, when the width of the scored grating is over 400mm, the stroke of the nut is long, and the existing nut weight-reducing device without follow-up has a large amount of change in the weight-reducing spring scale, and there is a large amount of movement along the wire. The force in the direction of the rod changes with the stroke, which makes the lead screw wear faster and the wear degree is different at different positions, which in turn affects the accuracy of the lead screw and the indexing system of the marking machine, which is not conducive to the development of high-precision large-area diffraction gratings

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