Bearing bush cover rolling cutting milling combined machine tool

Abstract

A bearing bush cover rolling cutting milling combined machine tool belongs to a special combined machine tool, and comprises an electronic control cabinet, a hydraulic station, a special work bench, a cooling system, a clamp body, a hydraulic clamp, a cutter, a cutter arbor holder, a special milling head casing, a centralization lubrication device, a numerical control feeding case, and a chip removing system; the machine tool is designed by mechanical and hydraulic principles combined with numerical control technology, is special for segmentation of bearing bush covers; the cutter arbor holder is divided into an upper half body and a lower half body by using a half structure, which is convenient for dismounting, good in stability, and avoids cutting vibration; when cutting is finished, an electrical system controls a hydraulic oil cylinder to release for 0.2-0.3 seconds, and then the cutter is withdrawn, which avoids a cutter-blocking phenomenon during cutter withdrawing. The device has high processing precision, and stable mechanical properties, can improve production efficiency, and is safe and convenient for operation.

Description

technical field [0001] The invention relates to a special combined machine tool, in particular to a bearing pad cover hobbing, cutting and milling combined machine tool, which is specially used for the division of the bearing pad cover. Background technique [0002] The processing of bearing pads is a key processing technology with high processing precision and great difficulty, and its processing quality directly affects product performance and service life. The bearing pad cover material is generally nodular cast iron or gray cast iron. Since the bearing pad cover parts are small, in order to save processing costs, generally 4 or 5 pieces of the bearing pad cover are cast at the same time and processed at the same time, and finally cut off. This requires a bearing pad cover roller. Combined cutting and milling machine tools. At present, the general structure of the hobbing-cutting-milling combination machine tool produced in China is as follows: the middle movable worktab...

AI Technical Summary

Problems solved by technology

The way to disassemble the cutter head is basically to move the tool bar support out of the tool bar. There are two main ways to move the support: one is the T-shaped slot, which is realized by moving the T-shaped bolt in the T-shaped slot. There is a gap between the type bolt and the T-slot, and there is also a gap between the screw hole and the bolt, so it is easy to cause cutting vibration during cutting, which affects the processing quality

The second is the dovetail chute type, which effectively avoids the gap, but the dovetail chute has poor rigidity and is easily damaged during heavy-duty cutting

Due to the one-piece casting of the workpiece, when cutting, 5 to 6 cutter heads are cut at the same time, resulting in too large cutting width, which is prone to cutting vibration, damages the tool, and damages the processed surface of the workpiece during clamping, making the surface roughness of the workpiece unreachable. According to the requirements, defects such as the phenomenon of banding of the knife are prone to occur when the knife is retracted at the end of the cutting

The scientific and technological personnel in this industry are constantly exploring and researching, hoping to develop an advanced rolling-cutting-milling combined machine tool for bearing pads. Although some achievements have been made, there are still technical problems that have not been overcome in practical applications.

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