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Processing method of full-grinding twist drill after plastic deformation and processing positioning apparatus

A technology of twist drills and positioning pins, which is applied to positioning devices, metal processing equipment, metal processing machinery parts, etc., can solve the problems of excessive material waste, and achieve high production efficiency, good surface roughness, and high drilling precision.

Active Publication Date: 2007-12-05
江苏爵克数控刀具有限公司
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Problems solved by technology

They have their own advantages and disadvantages. Because the milling and grinding processes require a large amount of cutting, their production efficiency is much lower than that of the plastic deformation process, and their material waste is also more, but the milling and grinding processes are similar to the plastic deformation Ratio, can obtain higher machining accuracy, so it is still used by some products with higher precision requirements

Method used

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  • Processing method of full-grinding twist drill after plastic deformation and processing positioning apparatus

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Embodiment Construction

[0016] An embodiment of the method and device of the present invention is as follows:

[0017] To process a twist drill with a nominal diameter of φ10, go through the following steps:

[0018] (1) The rough bar is sent to a four-roll rolling mill (model HNJ-1013) after cutting and grinding the outer circle, and the semi-finished product with grooves is processed by the conventional rolling method, and the blade back width and drill core of the semi-finished product Leave a grinding allowance of 0.8mm for the thickness;

[0019] (2) Cut and grind the semi-finished product with grooves after rolling, roughly grind the outer circle, and then send it to the groove grinding machine for groove grinding after heat treatment and grinding the outer circle;

[0020] (4) Install a positioning device for positioning the initial position of the workpiece to be processed on the ordinary automatic groove grinding machine. The positioning device includes a guide sleeve installed on the machi...

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Abstract

The present invention belongs to the field of making of metal cutting tool, and is especially process and apparatus of plastically deformed and ground twist drill. The process includes the following steps: 1. plastically deforming rod material to make semi-finished drill with grooves possessing grinding allowance; and 2. heat treatment, grinding excircle and grinding groove in a groove grinding machine. The plastically deformed and ground twist drill has high precision and high production efficiency.

Description

technical field [0001] The invention belongs to a manufacturing method of a metal cutting tool, and relates to a processing method and equipment of a fully ground twist drill used for manufacturing twist drills after plastic deformation. Background technique [0002] The production of twist drills has a history of more than 100 years. According to different methods of producing grooves, the production processes mainly include groove milling, groove grinding, and plastic deformation (four-roll rolling, four-plate rubbing, rolling twisting, extrusion, etc.) and other processes), these production processes are still widely used. They have their own advantages and disadvantages. Because the milling and grinding processes require a large amount of cutting, their production efficiency is much lower than that of the plastic deformation process, and their material waste is also more, but the milling and grinding processes are similar to the plastic deformation Compared with it, hig...

Claims

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Application Information

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IPC IPC(8): B23P15/32B23Q3/18
Inventor 江明华姚文岳
Owner 江苏爵克数控刀具有限公司
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