Large-specification deep hole boring device

Abstract

The invention relates to a large-specification deep hole boring device. The large-specification deep hole boring device comprises a bottom plate, a feeding device, a boring rod box, a boring rod bracket, a boring rod, a sliding body, a cutterhead, a workpiece and a tailstock, the boring rod penetrates through an inner hole of the workpiece, one end of the boring rod is connected with the boring rod box, the other end of the boring rod is connected to the tailstock, the boring rod bracket is positioned at the lower part of the boring rod, a feeding screw rod and the sliding body are installed above the boring rod, the sliding body is installed on the feeding screw rod, and the sliding body integrally moves forwards and backwards on the boring rod along the feeding screw rod; and the cutterhead is arranged on the sliding body, a transmission shaft is arranged in the boring rod box, one end of the transmission shaft is connected with the feeding device, the other end of the transmission shaft is connected with the end of the boring rod, the transmission shaft can drive the boring rod to rotate integrally, the boring rod can drive the feeding screw rod to rotate when rotating, so thatthe sliding body arranged on the feeding screw rod moves forwards and backwards relative to the boring rod under the rotation of the feeding screw rod. The large-specification deep hole boring deviceis compact in overall structure and low in manufacturing cost; and the cutterhead is replaced, boring rods with different specifications are used in a certain range, so that machining precision is high, the application range is wide, and the requirements of various working conditions can be met.

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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