Boring head assembly
A component and boring head technology, applied in the field of boring machines, can solve the problems of affecting machining accuracy, complex structure, heavy weight, etc., and achieve the effects of improving machining accuracy, high machining accuracy and light weight
Inactive Publication Date: 2012-10-17
CHINA COAL BEIJING COAL MINING MACHINERY
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Problems solved by technology
This requires the boring head to be equipped with a boring tool and a roller at the same time. The current boring head assembly has complex structure and heavy weight, which affects the machining accuracy.
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[0022] The boring head assembly of the present invention, preferred specific embodiment is as figure 1 As shown, a mandrel 1 is included, and the front end of the mandrel 1 is equipped with a boring tool 12 . Generally, an end cover 11 is arranged at the front end of the mandrel 1 , and then the cutter is arranged on the end cover 11 .
[0023] The outer edge of the front part of the mandrel 1 is movably equipped with a roller assembly. Specifically, the roller assembly can be sleeved on the outer edge of the front part of the mandrel 1. A thrust bearing 4 is arranged between the mandrel 1 and the roller assembly. The roller assembly and the mandrel 1 can be rotated relative to each other.
[0024] Such as figure 2 As shown, the thrust bearing 4 includes a moving ring 13 and a stationary ring 14 .
[0025] see you again figure 1 , the static ring 14 is fixedly connected to the mandrel 1, preferably the bearing seat 3 is fixedly connected to the mandrel 1, and the stationar...
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Abstract
The invention discloses a boring head component, comprising a mandrel, which is characterized in that a boring cutter is arranged at the front end of the mandrel, a roller component is movably arranged on the front outer edge of the mandrel, a thrust bearing is arranged between the mandrel and the roller component; two to four supporting half rings are arranged between the roller component and the movable ring of the thrust bearing and butted jointly into circular rings, thus, the supporting half rings can be conveniently disassembled and assembled without disassembling and assembling any other parts and components. After processing and when retracting, the supporting half rings are disassembled and the roller is rolling the runway to the rear position with smaller outside diameter, now, the front part of the mandrel is out of the supporting of roller, the mandrel is naturally lowered by the action of self weight and the boring cutter is slightly departed from the workpiece, so the workpiece can not be scraped during the retracting. By adopting the ultralight thrust bearing, the boring head has the advantages of simple structure, light weight, and high processing precision, thus being suitable for processing mainly the oil cylinder with large diameter.
Description
technical field [0001] The invention relates to a boring machine, in particular to a boring head assembly of the boring machine. Background technique [0002] At present, boring and rolling are generally used for the processing of large-diameter oil cylinders. In the prior art, one method for processing large-diameter oil cylinders is to carry out boring processing and rolling processing in stages. Since this method requires secondary clamping or secondary tool change, the accuracy is not high, and it is very impractical. [0003] Another method is to carry out boring and rolling simultaneously. This is a more popular method at present. Generally, it is survived after two rough boring and rolling processes and one fine boring and rolling process. This requires the boring head to be equipped with a boring tool and a roller at the same time. The current boring head assembly has complex structure and heavy weight, which affects the machining accuracy. Contents of the inventi...
Claims
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IPC IPC(8): B23P23/02B23B29/03B23P9/02
Inventor 陈捷史广稳
Owner CHINA COAL BEIJING COAL MINING MACHINERY