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Positive-negative chamfering drilling bit used for processing of plate parts

A technology for machining parts and plates, which is used in the field of high-efficiency, high-speed and precision tools to improve machining efficiency, optimize structure, and ensure machining accuracy.

Inactive Publication Date: 2013-06-19
SUZHOU AHNO PRECISION CUTTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the hole machining that requires positive and negative chamfering, it still requires two-cutting and two-sequence machining methods such as figure 1 , figure 2 shown

Method used

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  • Positive-negative chamfering drilling bit used for processing of plate parts
  • Positive-negative chamfering drilling bit used for processing of plate parts
  • Positive-negative chamfering drilling bit used for processing of plate parts

Examples

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Embodiment Construction

[0024] According to the technical requirements of double-sided chamfering for plate parts, the positive and negative chamfering compound drill is designed to reduce the process and improve the processing efficiency. The drill can be clamped at one time to complete the three processes of drilling, entrance chamfering and exit chamfering. Compared with the traditional process, it can reduce one clamping, improve processing efficiency, and reduce machine tool occupation time.

[0025] Such as Figure 5 As shown, the front and back chamfering drill bit used for processing plate parts includes a shank 1, a neck 2 and a head 3, and the head 3, neck 2 and shank 1 are coaxial cylinders centered on the same central axis body, the shank 1 is a section of cylinder with high cylindricity, the collet clamps the shank to transmit the power of the machine tool, so that the tool rotates and has cutting ability, the head 3 and the neck 2 are provided with chip removal grooves 4, The solid par...

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Abstract

The invention relates to a positive-negative chamfering drilling bit used for processing of plate parts. The positive-negative chamfering drilling bit used for the processing of the plate parts comprises a handle portion, a neck portion and a head portion, the head portion, the neck portion and the handle portion are coaxial cylinder bodies taking the same central axis as the center, scrap discharge grooves are arranged on the head portion and the neck portion, an entity portion except the scrape discharge grooves is a tool back, a main cutting edge, a negative cutting edge and a positive cutting edge are respectively arranged at positions of the head end face, the middle and the tail end face of the scrape discharge grooves, the main cutting edge is used for drilling the plate parts by drilling a hole, the positive cutting edge processes the an inlet chamfer of a through hole during feeding for the first time, and after the inlet chamfer is processed, the tool is retracted to the position of the negative chamfer edge to mill an outlet chamfer of the through hole out. The positive-negative chamfering drilling bit used for the processing of the plate parts achieves composite processing of drilling, chamfering and negative-chamfering.

Description

technical field [0001] The invention relates to a high-efficiency, high-speed precision cutting tool, in particular to a front and back chamfering drill bit used for processing plate parts. Background technique [0002] At present, the processing efficiency of cemented carbide drills has been increased by more than 4 times compared with high-speed steel drills. In order to further improve processing efficiency, compound tools such as step drills are also gradually promoted. However, in the hole machining that requires positive and negative chamfering, it still requires two-cutting and two-sequence machining methods such as figure 1 , figure 2 shown. It is a new technical problem to upgrade the original technology and improve the efficiency of the tool by changing the structure of the tool. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a front and back chamfering drill bit for proces...

Claims

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Application Information

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IPC IPC(8): B23B51/08
Inventor 刘伟陶志健周保富
Owner SUZHOU AHNO PRECISION CUTTING TECH CO LTD
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