Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Hole Machining Tool with an Independent Drill Point in the Center

A technology of hole processing and drill tip, which is applied in the field of hole processing tools, can solve the problems of small cutting load, poor centering ability, and large cutting force, so as to ensure dimensional accuracy and surface quality, avoid excessive cutting temperature, and improve stability sexual effect

Active Publication Date: 2020-09-11
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The drill point with a small apex angle has strong centering ability when drilling, but the cutting force is large and the strength is poor. The centering ability of the drill point with a large apex angle is poor when drilling, but the cutting load is small.
In order to reduce the cutting force and improve the efficiency of the tool, the drill point angle of the drilling tool is generally 120°~140°, but such a large drill point angle will cause the cutting process of the drilling tool to be too fast, and the chips will be excessively squeezed on the cutting edge. The pressure reduces the stability when cutting into the workpiece, especially when drilling on an inclined surface. In order to improve the processing accuracy, pre-drilling is generally required, and the processing efficiency is low.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Hole Machining Tool with an Independent Drill Point in the Center
  • A Hole Machining Tool with an Independent Drill Point in the Center
  • A Hole Machining Tool with an Independent Drill Point in the Center

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as Figure 1 to Figure 5 As shown, the center of this embodiment has a hole machining tool with an independent drill tip, including a cutter body 1 and a drill tip 2, and the drill tip 2 includes an inner drill tip 21 and an outer drill tip 22 that are independent of each other, and the outer drill tip 22 is located on the tool body. On the body 1, the inner drill tip 21 is installed in the center of the outer drill tip 22 and installed on the cutter body 1. The inner drill tip 21 partially protrudes from the outer drill tip 22, and the cutting depth of the inner drill tip 21 is greater than that of the outer drill tip 22. depth of cut.

[0028] The drill tip 2 is composed of an inner drill tip 21 and an outer drill tip 22. The inner drill tip 21 and the outer drill tip 22 cut into the workpiece layer by layer in the dire...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a hole-machining tool with an independent drill tip in center. The hole-machining tool with the independent drill tip in center comprises a tool body and the drill tip, the drill tip comprises an inner drill tip and an outer drill tip which are independent from each other, the outer drill tip is arranged on the tool body, the inner drill tip is arranged at the center of theouter drill tip in a penetrating mode and is arranged on the tool body, and the cutting depth of the inner drill tip is larger than the cutting depth of the outer drill tip. The drill tip is composedof the inner drill tip and the outer drill tip, the inner drill tip and the outer drill tip sequentially cut into a workpiece in a layered mode along the cutting depth direction, the inner drill tipcuts into the workpiece stably and then the outer drill tip cuts into the workpiece, so that the time for the drill tip to cut into the workpiece is prolonged and the stability of the drill tip duringdrilling into the workpiece is greatly improved; due to the fact that the inner drill tip is independent from the outer drill tip, the inner drill tip is provided with a small drill tip angle, the outer drill tip is provided with a large drill tip angle, the tool can be prevented from drilling excessively fast in the cut-in process, so that excessive extrusion to cutting edges by cut chips can beprevented, and the stability of the tool during cutting into the workpiece is improved; and the inner drill tips can be interchanged in batches, flexibly combined and installed on the outer drill tip, so that the inventory of hole drilling tools is greatly reduced.

Description

technical field [0001] The invention relates to a metal cutting tool, in particular to a hole processing tool with an independent drill point in the center. Background technique [0002] When the drilling tool is cutting, the cutting end is mainly subjected to the cutting force, and the chips can only be discharged from the cutting end through the chip groove. Since the cutting speed of the drilling tool varies greatly, and the center cutting speed is zero, the drilling During processing, especially during drilling into the workpiece, most of the axial cutting force is borne by the central cutting edge of the drilling tool. Drill points with small apex angles have strong centering ability but high cutting force and poor strength when drilling. Drill points with large apex angles have poor centering ability but small cutting load when drilling. In order to ensure drilling accuracy and cutting efficiency. In order to reduce the cutting force and improve the efficiency of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23B51/00B23B51/06
CPCB23B51/00B23B51/06B23B2251/18
Inventor 江爱胜王大辉刘敏赵志伟吴火飞项兴东
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products