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Anti-blocking punching device

A hole opener and anti-blocking technology, used in drilling/drilling equipment, drilling tool accessories, transportation and packaging, etc., can solve the problems of large hole opening resistance, easy breakage, and difficult cleaning, and improve hole opening efficiency. , The opening resistance is small, and the effect of reducing the resistance

Pending Publication Date: 2019-03-19
NANTONG PRATT MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing hole opener has the following defects. One, the hole opening resistance is large, so the heat generated is high and easy to break
2. The residue after opening the hole is easy to block the hole opener, making it difficult to clean

Method used

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0012] figure 1 , figure 2 Middle: center drill bit 1, hole sleeve 2, sawing edge 3, saw tooth 4, fixing piece 5.

[0013] The anti-blocking conversion hole opener includes a central drill bit 1 and a hole-piercing sleeve 2, the central drill bit 1 is fixedly connected to the hole-piercing sleeve 2, the central drill bit 1 is concentric with the hole-piercing sleeve 2, and the The center drill bit 1 protrudes outside the perforated column sleeve 2 . The purpose of this is to position first and then open the hole. The sawing edge 3 of the perforated column sleeve 2 is wavy, and the distance between adjacent wave crests is 1 / 3 to 1 / 2 of the circumference of the perforated column sleeve 2. Setting such a shape is to increase the opening The local acting pressure of the orifice. Improve hole opening efficiency and reduce resistance. Said saw...

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PUM

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Abstract

The invention discloses an anti-blocking punching device. The anti-blocking punching device comprises a central drill and a punching pillar sleeve, wherein the central drill and the punching pillar sleeve are fixedly connected; the central drill and the punching pillar sleeve are concentric; a sawing edge of the punching pillar sleeve is wavy; the distance between adjacent wave peaks is 1 / 3 to 1 / 2of the circumference of the punching pillar sleeve; and sawteeth are arranged on the sawing edge. The anti-blocking punching device has the beneficial effects that punching resistance is low, breakage caused by blocking can be prevented, and residues are convenient to clean.

Description

technical field [0001] The invention relates to a mechanical tool, in particular to a hole opener capable of preventing blockage. Background technique [0002] In mechanical tooling engineering, opening holes is a common means of operation. [0003] A hole saw is a consumable used to make holes in objects with a certain thickness. The hole saw is usually used in conjunction with the electric drill, and only needs to be clamped and fixed to the furniture of the hole saw and the electric drill. Start the hand electric drill to complete the drilling operation. Usually, during the drilling operation, it is necessary to hold the electric drill tightly with both hands and apply force slowly. Otherwise, the center bit of the hole saw will break and the hole saw will be scrapped. The existing hole opener has the following defects. First, the hole opening resistance is large, so the heat generated is high and easy to break. 2. The residue after hole opening is easy to block the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/04
CPCB23B51/0426
Inventor 花世军
Owner NANTONG PRATT MACHINERY
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