CN85202578U

CN85202578U - High speed drilling-filing bit

Info

Publication number: CN85202578U
Application number: CN 85202578
Authority: CN
Inventors: 范云德
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-06-29
Filing date: 1985-06-29
Publication date: 1986-07-30

Abstract

The utility model provides a cutting tool having the functions of pore opening and deburring. The utility model is characterized in that a pore is opened by a cylindrical drill body, and the burr is deburred by a rasp disc, which successes once. The work efficiency of the utility model is scores of times more than that of a common gas cutting pore opening method. The utility model is suitable to open bigger circular holes in the metal plates, parts of nonmetal plates and parts of pipelines. The utility model can be installed on a drill press or an electric hand drill. The cutting tool has the advantage of convenient and agile operation.

Description

High speed drilling-filing bit

The utility model is the combination of a kind of brill file, has the cutting element of perforate, two kinds of functions of removal bore edges burr.Be suitable on metallic plate, part non-metal board, section of tubing, opening than big hole.

Open on sheet metal than big hole, commonly used have two kinds of methods: a kind of is autogenous cutting; Another kind is that bradawl punch method one is promptly made a call to a circle aperture with little drill bit earlier, with the hacksaw saw, uses file filing, file finishing more then.The shortcoming of these two kinds of methods: time-consuming, effort, low precision.

For addressing this problem, U.S. Pat 394024 provides a kind of metal fluted drill of special construction, in the dimple of this fluted drill, is pressed with the cutter head that can remove burr.State-owned larger-diameter metal super hole cutter such as Japan, but do not remove the additional mechanism providing additional operation of burr.

The purpose of this utility model: the cutting element that the combination of simple, high-speed, the high-precision brill file of a kind of structural principle is provided.For example, bore file, on sheet metal, open the circular hole of a φ 100 with the utility model, if a few minutes, perforate success.Than two kinds of boring methods commonly used at present, improve tens times of work efficiency.

The utility model is achieved in that by the perforate of tubular drill body; File dish by special processing is removed the bore edges burr.Both can be contained on the drilling machine, and also can be contained on the electric hand drill and use.Convenient, flexible.

Be elaborated below in conjunction with accompanying drawing.

Fig. 1 is the front view of a kind of structure of the utility model.Fig. 2 is the schematic diagram of drill body.Fig. 3 is the schematic diagram of file dish.Fig. 4 is the drillstock schematic diagram.

By accompanying drawing 1 as can be known: high speed drilling-filing bit is made up of centre drill 1, drill body 2, file dish 3, holding

screw

4,5 five parts of drillstock.

As can be seen from Figure 2, drill body is actually the cylinder by some teeth, plays the perforate effect. Tooth is directly than being that 0.5～0.90(is Z:D=0.50～0.90), the leaning angle α of tooth=10～20 °, tooth and center line angle β=10～20 °, the oblique angle γ of tooth=40～50 °, drill body has up and down 1～2 ° tapering. Material is high-speed tool steel.

Shown by Fig. 3: at its anchor ring the cut of file of the special processing of process of some is arranged, utilize its to remove bore edges burr. Instrument is clockwise rotation. Material is quality carbon tool steel.

Fig. 4 is the schematic diagram of drillstock, and for ease of mounting or dismounting, the middle part of drillstock is designed to hexagon, and afterbody is designed to equilateral triangle.Its material is No. 45 steel.

Above-mentioned three in addition, must carry out quenching heat treatment.

Centre drill 1, holding screw 4 are standard component.At the centre drill tail end, process one 4 * 10 platform.

The utility model drilling tool, the sheet metal that can be suitable for has the little alloy sheets of steel plate, copper coin, zine plate, aluminium sheet and hardness; The nonmetal plate that can be suitable for has plank, polyvinyl chloride panel, laminated phenolic paper plate etc. (but can not the processing ceramic plate, the sheet material of hard crisp material such as glass plate); Also can be used for the large diameter pipeline perforate of above-mentioned two class materials.

The aperture specification of high speed super hole cutter file, tentative is φ 20-φ 160, the perforate degree of depth: 1～10 millimeter of metallic plate, 5～45 millimeters of non-metal boards.

Claims

1, the utility model partly is made up of centre drill 1, holding screw 4, drillstock 5 etc.It is characterized in that tubular drill body 2 links to each other with file dish 3.

A, tubular drill body 2 is characterized in that tooth footpath is 0.5～0.90 than (Z/D), leaning angle α=10～20 of tooth °, oblique angle γ=40～50 of tooth °, drill body has 1～2 ° tapering up and down.Tooth and center line angle β=10～20 °.

B, file dish 3 is characterized in that some cut of files are arranged on the anchor ring, instrument is the clockwise direction rotation.

2, by the cylindrical body 2 of claim 1 regulation, its feature material is a high-speed tool steel.Heat-treatment quenching hardness HRO 〉=60.

3, by the file dish 3 of claim 1 regulation, its feature material is a quality carbon tool steel, heat-treatment quenching hardness HRC 〉=60.

4, by the cylindrical body of claim 1 regulation and the connection of file dish, its feature:

A. be threaded

Or several securing members of B. connect.