High-precision center fine-adjustment grinding machine tailstock

Abstract

The invention belongs to the technical field of machine tools, and provides a high-precision center fine-adjustment grinding machine tailstock which comprises a first body and a second body. A through hole and a horizontal gap are formed in the first body, the through hole is parallel to the axis of the center, and the horizontal gap is connected with the through hole, runs through the second body and divides the second body into a tailstock upper part and a tailstock lower part. The second body is provided with a wide groove, wherein the center line of the wide groove is coplanar with the horizontal gap and parallel to the through hole, and an adjusting mechanism is arranged in the wide groove and provided with a wedge block. According to the scheme, the adjusting mechanism of the wedge-shaped structure is adopted, compared with a mechanism which directly adopts screw rod rotation to enable the upper part to deform, the high-precision center fine-adjustment grinding machine tailstock can avoid the creeping phenomenon, and adjustment is more sensitive; and the stress of a screw rod in the feeding mechanism is far smaller than that of a screw rod in the prior art, so that the adjusting force of the screw rod during operation is reduced, and operation is more convenient.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to a tailstock of a high-precision top fine-tuning grinder. Background technique [0002] Rotary machine tools (such as grinding machines, lathes, etc.) are usually equipped with a tailstock to position the workpiece. The tailstock is an important part, and a top for supporting the workpiece is installed on it. When working, the top and the main shaft need to have strict coaxiality, and for different types of workpieces, it is often difficult to ensure accurate positioning of the ordinary tailstock, and the stability of the coaxiality is difficult to guarantee. [0003] Patent CN201820973325.1 discloses a fine-tuning device for the top of a machine tool. The tailstock is set as an upper and lower part, and an adjusting screw is used to connect the upper and lower parts. Through the rotation of the adjusting screw, the upper part of the tailstock is driven to deform, thereby driving the ...

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Problems solved by technology

[0004] Although the structure of this patent can achieve a certain degree of fine-tuning, because the adjustment screw is directly used to drive the upper part of the tailstock to shift, the axial force of the screw is large. With the shift of the upper part, the coaxiality of the upper and lower bearings of the screw becomes worse, and the The pair is not strong, and the sliding friction is large, so that the adjustment force is large, and crawling will occur, resulting in the adjustment not being sensitive enough

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