Deep-hole boring machine for machining roller shell of roller of cast rolling machine

Abstract

The invention relates to the technical field of deep-hole boring machines, in particular to a deep-hole boring machine for machining a roller shell of a roller of a cast rolling machine. An independent variable frequency motor is adopted as a lead screw motor to drive feed lead screws, and in combination with a boring rod motor, stepless variable speed control over axial feeding of a boring cuttershaft is jointly achieved; and by the adoption of a gear ring simultaneously provided with inner teeth and outer teeth, synthesis motion of rotation of the feed lead screws around the axes of the feed lead screws and rotation of the feed lead screws around the axial line of a main boring rod is achieved. The technical problem of drooping of the boring rod is solved through two-end supporting. Thedeep-hole boring machine is simple in structure, relatively small in equipment total volume, low in power consumption and high in machining efficiency.

Description

technical field [0001] The invention relates to the technical field of deep hole boring machines, in particular to a deep hole boring machine for processing roll sleeves of casting and rolling mills. Background technique [0002] The roll of the casting-rolling machine is a key part of the casting-rolling machine. Because it needs to be rotated and cooled inside, it needs to be sealed well, so the precision of the inner hole is high. In addition, due to the erosion of the molten metal, the wear of the roll is also very large, so the consumption of the roll is also high. It is very fast, so how to improve the processing and repairing efficiency of the roll is the key to improving the efficiency of the casting and rolling mill. [0003] Casting mill roll sleeves belong to thick leather tube parts. The ideal processing method for thick leather tube parts can be deep hole boring. Rolling mill roll sleeves are less efficient. [0004] Traditional deep hole boring usually consis...

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Problems solved by technology

[0003] Casting mill roll sleeves belong to thick leather tube parts. The ideal processing method for thick leather tube parts can be deep hole boring. Low efficiency of rolling mill roll sleeves

[0004] Traditional deep hole boring usually consists of a large spindle gearbox with a chuck, which holds a large workpiece for rotary motion, followed by a complex boring bar feeding gearbox with a single-head supported boring bar for feeding Movement; this structure has the following defects: 1. Since the large workpiece requires rotation, the power of the spindle must overcome the weight and centrifugal force of the large workpiece itself, so the gearbox torque is required to be large and the strength of the manufacturing material is high, and the corresponding movement is relatively complicated. The demand is also large; 2. The boring bar is supported by a single head. When the feeding depth of the boring bar is deepened, the boring bar droops due to its own weight, the speed is very low, and the feed rate is very small. When the feed rate exceeds half, in order to prevent the boring bar from drooping , it is necessary to pad hard wood near the boring head, so that not only the rotational friction becomes larger, but also consumes more power, and the feed rate of the cutting tool cannot be too large, and the processing efficiency is extremely low; 3. The workpiece and the boring bar are installed independently, although there are It is beneficial to the up and down of parts, but the overall volume of the equipment is large and heavy

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