A quick-change tool holder with internal cooling cutting fluid

Abstract

The invention discloses an inner cooling cutting fluid fast-changing knife handle. The inner cooling cutting fluid fast-changing knife handle is installed on an outer cooling machine tool spindle BT60 knife bin and comprises a BT60 knife handle body, a pull rod, a rolling sleeve and a BT50 knife handle body. The BT50 knife handle body is installed into a conical hole of the BT60 knife handle body. One end of the pull rod is connected with the BT50 knife handle body. The other end of the pull rod is fixed to the BT60 knife bin through a machine tool spindle pull claw. The rolling sleeve is of a cavity structure. The periphery of the rolling sleeve is provided with a connecting-in opening. The BT60 knife handle body is sleeved with the rolling sleeve. The pull rod is provided with an annular groove. The bottom of the annular groove is provided with an inner conical hole. The front end of the pull rod is of a hollow structure. The inner conical hole communicates with the hollow structure. The hollow structure communicates with a lubrication hole of an inner cooling knife in the BT50 knife handle body. According to the inner cooling cutting fluid fast-changing knife handle, the labor intensity for changing a BT60 knife is relieved, thus non-inner-cooling cutting fluid machine tool spindle achieves cooling of inner cooling cutting fluid, scrap iron produced by machining is discharged in time, knife abrasion is reduced, the life of the knife is prolonged, the appearance quality and dimensional accuracy of a workpiece are improved, and work efficiency is improved.

Description

technical field [0001] The invention relates to the field of numerical control machining, in particular to a quick-change tool holder for internal cooling cutting fluid. Background technique [0002] For large machine tools, BT60 spindles are often used as the spindle, and BT60 broaching claws and tools are used. However, BT60 tools are generally large in size and heavy in weight. Using BT60 tools to process some parts with low power and torque is "overkill". Therefore, existing BT60 tools are usually used to process large-scale parts. The BT50 tool holder is used to process smaller-sized parts, and it is more commonly used in the field of machine tool processing. If the BT50 tool holder can be applied to the BT60 spindle of the machine tool, it can provide more space for machine tool processing and tool selection. Reasonable Expand the processing range of machine tools. [0003] The invention patent of publication number CN102764900A discloses a machine tool handle conver...

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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to address the deficiencies in the prior art, to provide a quick-change tool holder for internal cooling cutting fluid, and to realize the technology of converting the externally cooling cutting fluid into internally cooling cutting fluid for CNC milling and boring machines by using the BT60 tool holder. At the same time, it solves the technical problems of high labor intensity for tool replacement, serious tool wear, low machining efficiency and workpiece quality without internal cooling cutting fluid.

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