Large-specification deep hole boring device

Abstract

The invention relates to a large-scale deep hole boring device, which includes a base plate, a feeding device, a boring bar box, a boring bar bracket, a boring bar, a sliding body, a cutter head, a workpiece and a tailstock. The boring bar passes through the inner hole of the workpiece. One end of the boring bar is connected to the boring bar box, and the other end is connected to the tailstock. The boring bar bracket is located at the lower part of the boring bar. A feed screw and a slider are installed above the boring bar. The slider is installed on the feed screw. The sliding body moves back and forth on the boring bar along the feed screw; the sliding body is equipped with a cutter head, and a transmission shaft is installed in the boring bar box. One end of the transmission shaft is connected with the feeding device, and the other end is connected with the end of the boring bar. The transmission shaft can drive the boring bar to rotate as a whole, and when the boring bar rotates, it can drive the feed screw to rotate, so that the sliding body on it can move back and forth relative to the boring bar; the overall structure of the device is compact, and the manufacturing cost is low. Boring bars of different specifications are used within a certain range, with high machining accuracy and wide application range, which can meet the needs of various working conditions.

Description

technical field [0001] The invention belongs to the field of mechanical processing and machine tool equipment, and in particular relates to a large-size deep hole boring device. Background technique [0002] For the boring processing of inner holes, usually, for holes with a ratio of hole depth to hole diameter ≤ 5, conventional boring machines are used directly; for holes with a depth-to-diameter ratio > 5, deep hole boring is usually used; In actual production applications, a large part of them are deep-hole workpieces with a depth-to-diameter ratio between 5 and 12. This type of workpiece is a non-oil cylinder workpiece, and the machining hole diameter is too large, and many of these workpiece holes are discontinuous. Holes, such as the inner hole of the roller of papermaking machinery, the inner hole of the large winch roller, the inner hole of the large motor shell, the inner hole of the chemical machinery shell, the inner hole of the pressure vessel shell, etc. Ther...

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Problems solved by technology

[0002] For the boring processing of inner holes, usually, for holes with a ratio of hole depth to diameter ≤ 5, it is directly completed with a conventional boring machine; for holes with a depth-to-diameter ratio > 5, it is usually realized by deep hole boring; In actual production applications, a large part of them are deep-hole workpieces with a depth-to-diameter ratio of 5 to 12. This type of workpiece is a non-oil cylinder workpiece, and the machining hole diameter is too large, and many of these workpiece holes are discontinuous. Holes, such as the inner hole of the roller of papermaking machinery, the inner hole of the large winch roller, the inner hole of the large motor shell, the inner hole of the chemical machinery shell, the inner hole of the pressure vessel shell, etc. There are many problems in processing the above workpieces with the traditional deep hole processing method : If a corresponding large boring head must be designed, and the boring diameter of the deep hole boring head cannot be adjusted at will; due to the existence of the guide key, it is very difficult for the deep hole boring head to process discontinuous holes and soft material holes; the combination of rigid boring bar + boring head The structure makes the feed distance must be greater than 2 times the processing length to satisfy the feeding and retracting, resulting in long bed body and high overall manufacturing cost

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