CN2267885Y

CN2267885Y - Multifunction combined high-efficiency engineering broaching bit

Info

Publication number: CN2267885Y
Application number: CN 96234037
Authority: CN
Inventors: 张大铭
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-11
Filing date: 1996-01-11
Publication date: 1997-11-19
Anticipated expiration: 2006-01-11

Abstract

The utility model relates to a drilling tool for engineering construction, particularly a multifunction combined high-efficiency broaching bit of engineering. The utility model comprises a combination of positioning guiding axles and a combination of the broaching bit. Friction platforms are respectively arranged on the internal and the external circles and the bottom of a hollow bit cylinder in the combination of the broaching bit and the positioning guiding axles so as to improve the friction property of the broaching bit when the broaching bit is used. The end part of the positioning guiding axles not only can be designed into a bullet shape but also can be matched with various bits so as to enlarge the application of the positioning guiding axles, and thus, the utility model has the prominent characteristics of multiple functions, high work efficiency, and low energy consumption.

Description

Multifunction combined efficient engineering reaming bit

The utility model relates to a kind of engineering construction instrument, specifically is multifunction combined efficient engineering reaming bit.

At present, what generally adopt in the building installation engineering both at home and abroad is the spiral bit of single pricker sheet carbide alloy edge system, owing to be to adopt total cross-section rotary cutting and percussion drill chiseler to make principle, so when cooperating all kinds of facility operations in high rigidity and flintiness building stones, concrete, brick wall, exist the energy consumption height, work efficiency is low, and the effective operation cross section is little, operating environment pollutes big, and the plant utilization rate is hanged down the problems such as loss is big that reach.The patent No. is: though 93233262.5 combination high-efficiency engineering reaming bit has remedied the deficiencies in the prior art, but still it is big to exist frictional resistance, make work efficiency not high enough, complex structure, not only make processing technology and assembly technology complexity, reliability is also relatively poor simultaneously, and weight is heavier, making operates requires great effort very much, and function is also more single.

The purpose of this utility model just provides a kind of multifunction combined efficient engineering reaming bit, has multipurpose, the characteristics that high efficiency and low energy consumption and dependability are high, thus remedy above shortcomings in the prior art.

The technical solution of the utility model is: comprise the combination of positioning and guiding axle and reaming bit combination two parts, dress is contained on the transmission main shaft by inside and outside some (even number) blade formation hollow boring bit alternately arranged of dual trace circumference on the drill bit tube circumference mouth during wherein reaming bit makes up, with the incorporate minor diameter positioning and guiding of power transmission shaft axle on be distributed with the screw thread rubbing table, also be distributed with the screw thread rubbing table respectively in the inside and outside circle and the bottom surface of drill bit tube.

In technique scheme, owing on the positioning and guiding axle, be distributed with the screw thread rubbing table, changed the situation that the whole outer round surface of the former axis of guide participates in friction, make friction reduce more than 90%, improved work efficiency.Simultaneously, also be distributed with the screw thread rubbing table, when the outer round thread rubbing table of drill bit tube is used for high rotating speed, improves the frictional resistance of former drill bit tube outer surface and operation hole inwall and increase the facility range of application of multiple rotating speed in the inside and outside circle and the bottom surface of drill bit tube.The interior rubbing table of drill bit tube is used for preventing that hand-held operation from bit body occurring with by guiding position, operation hole deflection the time, and cover bores on the material core outer round surface friction with drill bit tube inwall, thereby reduces resistance.When the rubbing table of drill bit tube bottom surface was used to prevent that the drill bit operation from putting in place, cover bored material core plane with the friction of drill bit tube end plate and work the effect out of service that will occur after the facility underloading speedup of indicating.The positioning and guiding axle of minor diameter makes facility miniaturization, lightness.

On the blade on the utility model drill bit tube relief angle is arranged all, and the point of a knife of every group of blade is skew to the left and right respectively, owing on the blade relief angle is arranged, in the blade course of work, the minimizing that contacts with working face, therefore frictional resistance also reduce and have energy-saving effect, and the work temperature rise of whole blade is reduced, and the mechanical performance of blade material and physical and chemical parameter are improved on the contrary.Be offset about point of a knife, make the formed trajectories distance of two groups of blade points of a knife increase on the contrary, on hard construction material, improved percentage of damage and radiating condition during reaming, thereby also just improved work efficiency.

The utility model is a bullet shape in the end of positioning and guiding axle, the positioning and guiding axle is worked reduce friction resistance and dredge foreign matter work in drawing the hole.End at the positioning and guiding axle can also be drill bit, makes reaming location drilling usefulness when being used for processing metal thin plate, plank, plastic plate, glass, slabstone and building tile etc., makes to the utlity model has multiple function, and the scope of application enlarges greatly.

Therefore, the utility model is owing to the frictional property to hollow boring bit improves, not only improved the work efficiency of drill bit greatly, reduced the loss of energy consumption and facility, and make the reduced of the positioning and guiding axle of drill bit, the straight increase in the drill bit tube, thereby increased substantially the effective operation diameter, and make facility small-sized, lightness, thereby reduced labour intensity, saved equipment investment, put forward the utilization rate of equipment (electric tool), enlarged the range of application of drill bit simultaneously, made to the utlity model has multipurpose, high efficiency, low energy consumption, the outstanding characteristic of high reliability.

Describe in detail below in conjunction with the embodiment accompanying drawing.

At first accompanying drawing is described:

Fig. 1 represents structural representation of the present utility model, is a kind of embodiment;

The side view of Fig. 2 presentation graphs 1;

Fig. 3 and Fig. 4 represent the three-view diagram of two groups of blades respectively;

Fig. 5 represents that the positioning and guiding axle makes up another kind of example structure figure.

Fig. 6 is an aid of the present utility model.

Referring to Fig. 1, the utility model comprises the combination of positioning and guiding axle and reaming bit combination two parts, wherein the combination of positioning and guiding axle is to be made of incorporate transmission main shaft (1) and positioning and guiding axle (5), is milled with technique platform (2) on transmission main shaft (1), is convenient to mounting or dismounting, positive stop lug boss (3) is arranged, be used for the fixing of main shaft (1) and ring flange (12), and rotating speed cue mark (4), be used for indicating the rotating speed of running, damage facility to prevent to transship reduction of speed, and spindle thread (8) is arranged.Be divided on the positioning and guiding axle (5) of minor diameter and be furnished with three sections minor thread rubbing table (7), its end is sub warhead (a 6) shape, is embodiment one of the present utility model.The reaming bit combination comprises drill bit tube (9), be distributed with fine pitch rubbing table (10) at its cylindrical, groove between two rubbing table (10) constitutes flute (21), both be used for chip removal, can guarantee not influence after drill bit tube (9) the thin-walled lightness intensity of cylindrical shell again, inner ring at drill bit tube (9) is distributed with interior rubbing table (16), flange base plate rubbing table (14) is arranged in the bottom, 12 blades alternately arranging inside and outside being equipped with by the dual trace circumference on the round perisotomice of drill bit tube (9) are that A makes up golden blade (19) and 8 combination golden blades (20), as shown in Figure 2, blade (19), (20) shape such as Fig. 3, shown in 4, blade (19), (20) point of a knife is 60 °, paying relief angle is 8 °, relief angle α is 3 °, and blade (19), (20) main work edge section (912), (202) length is less than the latent sword section (194) of keeping away, (204) length, make point of a knife skew to the left and right respectively, nozzle at drill bit tube (9) is provided with groove (18) outside an internal groove (17) and the tube, reduce resistance when being used for a tin inside and outside chip removal, the tube bottom of drill bit tube (9) is ring flange (12), process area (13) is arranged on it, be convenient to dismounting, be connected on the spindle thread (8) by flange nut (15).

Fig. 5 represents second kind of embodiment of the present utility model, the location drill bit is equipped with by locating drill bushing (27) and holding out against screw (28) in top at positioning and guiding axle (5), the location drill bit can be mechanical spiral bit (35), be steel alloy blade tip (41), be used for the processing metal thin plate, plank, the reaming location drilling of plastic plate, it also can be alloy spiral bit (36), be carbide alloy blade tip (42), be used for stone slab, the location drilling of building tile: can also be hollow diamond bit (37), for diamond blade tip (43), be used for glass, the location drilling of materials such as hard porcelain plate.

Figure 6 shows that aid of the present utility model, (33) be chisel, be used to cut construction waste remaining in the reaming metapore, (32) be awl, be used for impacting the tear reason cover brill waste material that rises after the reaming, (30) are holding rod, adopt seamless steel pipe, (31) be the hammering steel core, be used to bear the iron hammer impact strength.

Claims

1, a kind of multifunction combined efficient engineering reaming bit, comprise the combination of positioning and guiding axle and reaming bit combination two parts, wherein be equipped with on the drill bit tube circumference mouth in the reaming bit combination and be contained on the transmission main shaft by some (even number) blade formation hollow boring bit of alternately arranging inside and outside the dual trace circumference, it is characterized in that with transmission main shaft (1) incorporate minor diameter positioning and guiding axle (5) on be distributed with screw thread rubbing table (7), also be distributed with screw thread rubbing table (16), (10), (14) respectively in the inside and outside circle and the bottom surface of drill bit tube (9).

2, multifunction combined efficient engineering reaming bit according to claim 1 is characterized in that on blade (19), (20) relief angle α being arranged all, and point of a knife skew to the left and right respectively.

3, multifunction combined efficient engineering reaming bit according to claim 1 and 2 is characterized in that in the end of positioning and guiding axle (5) being sub warhead (6).

4, multifunction combined efficient engineering reaming bit according to claim 1 and 2 is characterized in that in the end of positioning and guiding axle (5) drill bit being housed.

5, multifunction combined efficient engineering reaming bit according to claim 1 is characterized in that upward and on the positive stop lug boss (3) of transmission main shaft (1) being milled with technique platform (13), (2) respectively at the ring flange (12) of drill bit tube (9).

6, multifunction combined efficient engineering reaming bit according to claim 1 is characterized in that rotating speed cue mark (4) is arranged on transmission main shaft (1).