Rotating table type self-centering rotating center frame of lathe

Abstract

The invention discloses a rotating table type self-centering rotating center frame of a lathe. The rotating table type self-centering rotating center frame comprises an installing fixing base, a bottom plate, a chuck and a bearing pedestal, wherein the installing fixing base is used for being connected with the lathe, and a rotating table structure is arranged in the center of the installing fixing base; the bottom plate is arranged on the rotating table structure of the installing fixing base; the chuck comprises a chuck inner core, three clamping claws used for clamping workpieces, a chuck body, end face thread discs and poking blocks, wherein the chuck body and the chuck inner core are of an integrated structure; the bearing pedestal is fixedly connected with the bottom plate through two stand column rods, a bearing is arranged inside the bearing pedestal, and the chuck inner core is sleeved with an inner ring of the bearing, wherein the chuck can support the workpieces and can rotate synchronously with the workpieces when the workpieces are machined. The chuck in the rotating table type self-centering rotating center frame rotates synchronously along with the workpieces, in this way, there is no friction between the workpieces and the chuck, it is guaranteed that the workpieces can rotate without noise, friction and jump under the condition that the surfaces of the workpieces are not machined, then the machining stability of the workpieces is guaranteed, machining precision is easily improved, and machining difficulty is lowered.

Description

technical field [0001] The invention relates to a lathe accessory, in particular to a lathe turntable type self-centering rotating steady frame. Background technique [0002] At present, there are basically two types of lathe center frames on the market, one is a three-point support center frame, and the other is a hydraulic center frame. [0003] Among them, the three-point support center frame supports the workpiece by adjusting three support rods. Bearings or cast iron friction blocks are installed on the support points, and the workpiece rotates in the three bearings or friction blocks. [0004] However, if the surface of the workpiece has not been processed, the workpiece cannot be well matched with the three support points, resulting in a series of irregular phenomena such as jumping, scratching, heat jamming, and noise during the processing of the workpiece. [0005] Moreover, it is difficult for the three-point supporting steady frame to adjust the center line of ro...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a lathe turntable type self-centering rotating steady rest to solve the problem that the workpiece is prone to beating when its radial surface has not been processed during processing, so as to ensure the stability of the workpiece during processing sex

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