CN2455424Y

CN2455424Y - Electric hole maker

Info

Publication number: CN2455424Y
Application number: CN 00263484
Authority: CN
Inventors: 郑美林
Original assignee: FEIYUE HARDWARE TOOL FACTORY YUHUAN COUNTY
Current assignee: FEIYUE HARDWARE TOOL FACTORY YUHUAN COUNTY
Priority date: 2000-12-21
Filing date: 2000-12-21
Publication date: 2001-10-24
Anticipated expiration: 2010-12-21

Abstract

The utility model discloses an electric hole maker, which is composed of a main body, a central drilling rod, and a spring, wherein, the central drilling rod and the body are fixedly connected through positioning screws; the front part of the body is provided with a cylindrical drilling cylinder; the rear end is provided with a clamping rod; the edge of the drilling cylinder is embedded with a plurality of drilling heads, and the direction of knife edges of the drilling heads is consistent with the rotary direction of the knife edges of the drilling heads. The distances from the knife edges of the drilling heads to the shaft center of the central drilling rod are unequal. The utility model gives full play to functions of the knife edges; stressed area of the drilling cylinder which acts on an opening object can be enlarged, and service life of the electric hole maker can be increased. The electric hole maker is mainly matched with electric drills or drilling machines.

Description

Electronic hole making drill

The utility model relates to a kind of electronic hole making drill.

When electric drill or drilling machine used common bit bore, the bore dia that is got out was less.When needing the bigger hole of drill diameter, have only bore around the continuous edge several down even tens times.Like this, not only pretty troublesome, and also the hole that is got out is very coarse.In order to get out bigger hole, aperture, some people's design has also been produced the hole making drill that adopts hydraulic method, and as the hydraulic opener that Chinese patent 89203662.1 provides, it is to utilize hydraulic principle, is made up of plunger displacement pump, perforate head and high-pressure hose.During perforate, want the metallic plate of perforate earlier with perforate head-clamp residence, exert pressure by plunger displacement pump then and realize.Operation with this hole making drill perforate is very complicated, and speed is very slow, range of application is little.Other hydraulic opener also has similar defective.Therefore, electronic hole making drill has appearred now.More common electronic hole making drill is made up of body, center drilling rod and the spring that is enclosed within on the drilling rod of center, and the front end of body is embedded with drill bit.During this electronic hole making drill boring, at first go out an aperture with the centre drill bar drill after, utilize the center drilling rod to locate, rely on the drill bit of body front end that the hole is left then.The advantage of this electronic hole making drill is conspicuous, but it also exists the some shortcomings part, as the drill bit on the body wear and tear easily, scrap in the perforate process is difficult for problems such as discharge, radiating effect difference.

The purpose of this utility model is at the problems referred to above, and a kind of structure improved electronic hole making drill is provided, and it has characteristics such as rational in infrastructure, that drill bit is not easy to wear, chip removal is quick.

For achieving the above object, the utility model has adopted following technical proposal: this electronic hole making drill by body, be inserted in the center drilling rod in the chamber body and the spring that is enclosed within on the drilling rod of center is formed, be connected by dog screw between center drilling rod and the body, the front portion of body is a brill tube cylindraceous, the rear end is a clamping bar, the edge that bores tube is embedded with several drill bits, and the blade direction of drill bit is consistent with the direction of its rotation.

In this electronic hole making drill, the blade of drill bit to the distance in drilling rod axle center, center does not wait.This electronic hole making drill general and electric drill or the supporting use of drilling machine.The use step is: 1, make the chuck of electric drill or drilling machine clamp the clamping bar of body rear end; 2, with center drilling rod aperture of subdrilling on the object of perforate, and the center of insertion drilling rod is as the location: 3, use the drill bit that bores the tube edge that macropore is got out at last.The utility model mainly is that the structure of drill bit has been done improvement, the direction of blade by originally with its rotation direction vertical change into parallel consistent, to give full play to the effect of blade.Simultaneously, the special blade position that is provided with is bored tube in the increase perforate process and is acted on the lifting surface area of perforate object, thereby can reduce the wearing and tearing of drill bit, the service life of having improved this hole making drill apart from the axle center difference.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is elaborated.

Fig. 1 is the profile schematic diagram of the electronic hole making drill that provides of the utility model.

Fig. 2 is the cutaway view of Fig. 1 along A-A.

Fig. 3 is the vertical view of Fig. 1.

Among the figure, 1, the center drilling rod; 2, drill bit; 3, blade; 4, spring; 5, bore tube; 6, louvre; 7, dog screw; 8, body; 9, clamping bar; 10, chip area.

As depicted in figs. 1 and 2, this electronic hole making drill comprises body 8, center drilling rod 1 and spring 4, and center drilling rod 1 connects with body 8 by dog screw 7, and spring 4 is enclosed within on the center drilling rod 1.Brill tube 5 edges of body 8 front portions are embedded with drill bit 2.Drill bit 2 is connected with boring tube 5, and its quantity is generally between three to 12.Present embodiment is four, sees shown in Figure 3.Blade 3 directions of drill bit 2 and the rotation direction of boring tube 5, cut direction unanimity just can effectively improve the cutting power of drill bit 2.The drill bit 2 general superhard alloy materials that adopt are made.

As shown in Figure 1, bore tube front portion, 5 side and be equipped with chip area 10 corresponding to each drill bit 2.In the present embodiment, chip area 10 is corrugated.Be provided with undulatory chip area 10 can quick and stable ground drain scrap, improve the speed of boring and reduce the wearing and tearing of drill bit 2 and prevent to block.

As shown in Figure 1, the side of brill tube 5 also is provided with louvre 6.6 thermolysis of louvre.

Electronic hole making drill that the utility model provides and electric drill or the supporting use of drilling machine are as long as clamp the clamping bar 9 of body 8 rear ends with the chuck of electric drill or drilling machine.This electronic hole making drill can be on various materials such as steel plate, shaped steel, corrosion resistant plate, cast iron, resin plate rapid drilling.Show that through actual tests it can make prolong ten times the service life of drill bit, the boring ability improves several times.

Claims

1, a kind of electronic hole making drill, by body (8), be inserted in the center drilling rod (1) in body (8) inner chamber and the spring (4) that is enclosed within on the center drilling rod (1) is formed, be connected by dog screw (7) between center drilling rod (1) and the body (8), the front portion of body (8) is a brill tube cylindraceous (5), the rear end is clamping bar (9), the edge that bores tube (5) is embedded with several drill bits (2), it is characterized in that blade (3) direction of described drill bit (2) is consistent with the direction of its rotation.

2, electronic hole making drill according to claim 1, the blade (3) that it is characterized in that described drill bit (2) to the distance in center drilling rod (1) axle center does not wait.

3, electronic hole making drill according to claim 1 and 2 is characterized in that described brill tube (5) front portion, side is equipped with chip area (10) corresponding to each drill bit (2).

4, electronic hole making drill according to claim 3 is characterized in that described chip area (10) is corrugated.

5,, it is characterized in that described side of boring tube (5) is provided with louvre (6) according to claim 1,2 or 4 described electronic hole making drills.