Portal shaped curve molding milling machine for guide face of bed body of digital control lathe

Abstract

A milling machine for machining the convex curve on the surface of the guide track on numerally controlled lathe in order to compensate the quenching deformation of guide track is characterized by that a speed variator coupled with motor is fixed onto slide plate, the output shaft of speed variator is connected with a cutting mainshaft parallel to the working surface of movable bench, and all the surfaces to be machined can simultaneously be machined.

Description

Technical field: [0001] The invention relates to metal cutting processing equipment, in particular to a CNC lathe bed guide rail surface gantry curve forming milling machine, which is mainly used for processing the guide rail working surface of the upper part of the machine tool bed. Background technique: [0002] The bed body of the machine tool is one of the key components of the machine tool. The hardness of the upper surface of the bed body, that is, the working surface of the guide rail, is particularly important, which directly affects the service life of the machine tool and the maintenance of precision. The working surface of the guide rail on the upper part of the existing machine tool body is first processed by a vertical planer, and then quenched and ground. As shown in Figure 6: the bed body 10 will be deformed during quenching, and a layer of quenching layer 11 is formed on the working surface of the upper guide rail of the bed body 10 after quenching. The numbe...

AI Technical Summary

Problems solved by technology

In this method, because of the different hardness and rigidity of the casting, the structure and position of the ribs are different, the protrusion value varies greatly. Even for the same bed body, with the same pressure, the maximum difference in the protrusion value can reach 0.6mm. Many, but the convex value of each segment in the length direction presents a nonlinear state, irregular, 20% of the bed body hardness uniformity is lower than the national standard, and needs temporary treatment, and 6% of the bed body is being ground Compared with the national standard, the uniformity of the post-hardness is very different, so secondary quenching is necessary

In the secondary quenching, the surface of the guide rail of the bed body is prone to burning or cracking and scrapping. The grinding after the secondary quenching, due to the large error of the bed body protrusion, is labor-intensive and time-consuming, which increases the processing cost.

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