Pulling type counterboring tool for machining deep hole

Abstract

The invention belongs to the field of machining and provides a pulling type counterboring tool for machining a deep hole. The pulling type counterboring tool comprises a counterboring drill and an extending tool rod. The counterboring drill comprises a blade, a tool body part, a tool body structure part using a wrench and a threaded part. The threaded part of the counterboring drill is in threaded connection with the extending tool rod. The counterboring drill is a pulling type counterboring drill. The cutting conical angle of the counterboring drill ranges from 15 degrees to 17 degrees, a zero front angle is adopted for the cutting part, the rear angle of a cutting part blade ranges from 12 degrees to 14 degrees, and a blade spiral angle ranges from 7 degrees to 9 degrees. A cooling hole is formed in the connecting position of the tool body and the blade cutting part, and tool body part cooling liquid is discharged and is directly sprayed to a cutting area. Cooling holes are formed in the extending tool rod and the counterboring tool body so that the cooling liquid can flow in from the interior. By means of the pulling type counterboring tool for machining the deep hole, the machining requirement can be ensured, the cost of materials can also be reduced, errors generated by vibration are reduced, and cutting stability is ensured; and the precision and efficiency of titanium alloy machining can be ensured, and the surface quality of workpieces is ensured.

Description

Technical field [0001] The invention belongs to the field of mechanical processing, and relates to a pull-type reaming tool for processing deep holes, which is used for processing deep holes. Background technique [0002] Deep hole machining may have the following problems: When machining deep holes, due to the slender tool, poor rigidity, low strength, easy deviation and vibration during the machining process, the machining accuracy and roughness of the hole are not easy to guarantee; the heat dissipation condition of the tool is poor , The increase in cutting temperature will reduce the durability of the tool, and it will be difficult to remove the chips. It will not only scratch the machined surface, but also cause chipping and breaking of the tool in severe cases. The operator cannot directly observe the cutting condition of the tool, but can only rely on experience , Listen to the sound, look at the appearance of chips and touch vibration to judge whether the cutting process...

AI Technical Summary

Problems solved by technology

[0002] The following problems may occur in deep hole processing: when processing deep holes, due to the slender tool, poor rigidity, low strength, and easy deviation and vibration during processing, the machining accuracy and roughness of the hole are not easy to guarantee; the heat dissipation conditions of the tool are poor , the increase in cutting temperature will reduce the durability of the tool, and it will be difficult to remove chips. It will not only scratch the machined surface, but also cause chipping and breaking of the tool in severe cases; the operator cannot directly observe the cutting condition of the tool, and can only rely on experience , Listen to the sound, look at the appearance of chips and touch vibrations to judge whether the cutting process is normal

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