High-speed numerical control honing and reaming machine tool and high-precision hole machining method

Abstract

The invention discloses a high-speed numerical control honing and reaming machine tool, and belongs to the technical field of reaming and honing machine tools. The high-speed numerical control honing and reaming machine tool comprises a base, a spindle box, a rotary worktable and a stand column, wherein a transmission spindle in the spindle box comprises a transmission shaft with a central water flowing channel; the surface of the transmission shaft is provided with an upper end cover, a first angular contact ball bearing, an inner ring jacking ring, a second angular contact ball bearing and a lower end cover which are sequentially connected from top to bottom in a sleeved mode, and the upper end cover and the lower end cover are fixedly connected with the spindle box; the surface, located in an inner cavity of the upper end cover, of the transmission shaft is in threaded connection with a tightening nut, the surface, located between the tightening nut and the first angular contact ball bearing, of the transmission shaft is provided with a gasket in a sleeved mode, and the top end of the transmission shaft is rotationally connected with a rotary connector; and an ER elastic collet chuck is arranged in an inner cavity of the bottom of the transmission shaft, and the bottom of the surface of the transmission shaft is in threaded connection with an ER locking nut. According to the high-speed numerical control honing and reaming machine tool, the angular contact ball bearings and the tightening nut are adopted, so that the rotating precision of the transmission shaft is higher; and through rotary connection and the transmission shaft with the central water outlet flow channel, cutting fluid and disintegrating slag can be rapidly discharged, and a good cooling and lubricating effect is achieved so that the thermal deformation of a deep and long hole in the machining process can be reduced, and the machining precision is improved.

Description

technical field [0001] The invention relates to the technical field of reaming and honing machines, in particular to a high-speed numerical control honing and reaming machine tool and a processing method for high-precision holes. Background technique [0002] The CNC reaming honing machine is a grinding machine that uses a honing head to honed the surface of the workpiece. It is mainly used for honing the holes of workpieces in manufacturing industries such as automobiles, tractors, hydraulic parts, bearings, and aviation. There are two types of reaming honing machine tools, vertical and horizontal. The main shaft of the vertical reaming honing machine tool has a short working stroke, which is suitable for honing cylinders and box holes. The honing head inlaid with oil stone is driven to rotate by the vertically arranged spindle, and at the same time it is driven by the hydraulic device to perform vertical reciprocating feed movement. The horizontal reaming honing machine h...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-speed numerical control honing reaming machine tool and a high-precision hole processing method to solve the problem of deep and long hole processing in the prior art, which can greatly improve work efficiency and processing quality, and reduce the rate of defective products. And the honing fluid is centrally processed and recycled to achieve the purpose of energy saving and efficiency enhancement

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