CN2537497Y

CN2537497Y - Hole boring knife

Info

Publication number: CN2537497Y
Application number: CN 02208906
Authority: CN
Inventors: 罗堃錡
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-05
Filing date: 2002-04-05
Publication date: 2003-02-26
Anticipated expiration: 2012-04-05

Abstract

The utility model discloses a boring tool, comprising two blade holders arranged at the end face of single cutter shaft, a pressing board arranged across the outer flanks of the two blade holders, preventing the blade holder from shaking by strong torque force while machining, a chip removal groove and a chip removal guide face positioned at the outer margin of cutter shaft, removing the chip immediately, a flow passage providing the outflow of cooling liquid and an oblique. The cooling liquid swashes the blades directly. The utility model has an advantage of longer life of the blades.

Description

Hole boring knife

Technical field

The utility model relates to a kind of Hole boring knife, refers to that especially the relative blade cut of a kind of cutter shaft outer rim position is provided with axial chip area and chip removal guide face, and the chip area surface is provided with the oblique hole that can flow out cooling fluid, makes the Hole boring knife of preferable chip removal of blade tool and heat radiation function.

Background technology

Bore a hole and be one of important step in the part processing process, mainly be that a less aperture is expanded into the size that needs, and make the cutting face more careful, or the Surface Machining that part is coarse becomes meticulous even surface, to reach the accuracy of demand, therefore the good and bad direct relation part processing precision of quality so bore a hole may influence the various factors of the processing quality of boring a hole, and becomes the emphasis place that industry is improved; As shown in Figure 5, it is the cutter 4 of the common on the market processing of boring a hole, mainly establish a tank that radially runs through 41 at a cutter shaft 40 end faces, and the knife rest 50 of the solid two opposed closings of cutter shaft 40 end spiral shells, this knife rest 50 is provided with in the tank 41 that projection 52 is placed in cutter shaft 50, and the groove 54 of wearing that a fixed screw 54 runs through knife rest 50 is screwed on the cutter shaft 40, these knife rest 50 outsides convex with tool rest 51 for blade 53 location; Utilize cutter shaft 40 rotation to make in the surface or hole of the blade 53 machining parts on the cutter shaft, reaching the precision of demand, yet this kind Hole boring knife but is easy to generate following problem in use:

One, knife rest easily produces vibration in but cutting in the process, has a strong impact on processing quality.

Because this knife rest distinctly locks at the cutter shaft end face with a fixed screw, and gapped existence when the tank of cutter shaft cooperates with the projection of knife rest, so powerful torsion that is produced in the Tool in Cutting workpiece process, make the knife rest end bear reverse thrust (as shown in Figure 5), so can cause the outer end of two knife rests to expand outwardly, make knife rest produce the oscillation phenomenon (as shown in Figure 6) of turning up easily, have a strong impact on the surface accuracy of workpiece.

Two, smear metal is difficult for getting rid of, and can be entangled with on knife rest.

The smear metal that the boring tool of above-mentioned prior art is produced when cutting is stopped by the cutter shaft end face, can't get rid of smoothly and be entangled with in the knife rest place, even Yin Gaowen and being stained with on the glutinous blade, the heat radiation of so serious obstruction blade shortens blade life, and the smear metal of being entangled with makes the surface of workpiece produce scratch with the cutter rotation, can't make work piece surface level and smooth.

Three, blade poor radiation must be changed often.

The boring tool of above-mentioned prior art need be dependent on the knife rest of the cool but liquid of external guidance impulse rotation, high temperature with the cooling blade, but the centrifugal force that is produced during the cutter rotation, cool but liquid is outwards thrown away, cause cooling fluid to be obstructed and directly to touch blade, and make the heat radiation function of blade unclear, because high temperature is a big killer who causes blade life to shorten, so Hole boring knife significantly reduces the life-span of blade, must change blade often, and the relative processing cost that makes increases.

Main purpose of the present utility model provides the steadiness that a kind of effective lifting knife rest combines with cutter shaft, to avoid vibrative Hole boring knife in the working angles.

Another purpose of the present utility model provides a kind of Hole boring knife that smear metal is got rid of rapidly.

Summary of the invention

In order to achieve the above object, the utility model proposes a kind of Hole boring knife of being made up of a cutter shaft, two knife rests, its improvement is:

This cutter shaft is a cylinder, its end face is provided with the tank that radially runs through, and a screw is respectively established in the appropriate location in the relative tank of cutter shaft end face two outsides, the relative tank end positions of this cutter shaft outer rim is provided with an axially extended chip area, and the central authorities of cutter shaft are provided with a runner, and each chip area surface appropriate location is respectively equipped with an oblique hole that is communicated with runner;

Two knife rests are the opposed closing of 180 degree, each knife rest is provided with the projection inlay card in the cutter shaft tank towards a side of cutter shaft, each knife rest side outwardly is installed with blade, the relative cutter shaft screwhole position of each knife rest is provided with a microscler groove of wearing that runs through, this two knife rests outside is striden and is established a pressing plate, and wear lock pressing plate and two knife rests with fixed screw, make knife rest firmly be combined in the cutter shaft end.

Advantageously, each chip area one side of this cutter shaft is provided with chip area and forms the chip removal guide face of inclination.

Based on above-mentioned content, the utility model can get following advantage:

1, cutter shaft of the present utility model central authorities are provided with runner, cooling fluid by runner through oblique hole direct impulse blade, cooling rapidly, heat radiation make blade can keep best cutting state, have the advantage of long service life.

2, the two knife rests of the present utility model outside is striden and is provided with a pressing plate, and utilizes the fixed screw locking, and the compacting of two knife rest compression plates firmly is combined on the cutter shaft, produces in the time of can avoiding the cutter rotary cutting, has the advantage that promotes the finished surface accuracy.

Description of drawings

For can be further more detail knowledge feature of the present utility model and other purpose, existing attachedly describe in detail as the back with icon:

Fig. 1 is a perspective exploded view of the present utility model.

Fig. 2 is the generalized section that the utility model knife rest combines with cutter shaft.

Fig. 3 is the generalized section of the utility model cutter shaft.

Fig. 4 is the schematic diagram of the utility model Hole boring knife chip removal situation.

The schematic diagram that smear metal was entangled with when Fig. 5 was the cutting of prior art Hole boring knife.

Fig. 6 is the schematic diagram that produces the vibration of turning up when cutting of prior art Hole boring knife.

The specific embodiment

As shown in Figure 1, the utility model is a kind of Hole boring knife structural improvement, and its cutter mainly is made up of a cutter shaft, two knife rests and a pressing plate, wherein:

This cutter shaft 10 is a cylinder, its end face is provided with the tank 11 that radially runs through, the appropriate location of these tank 11 two bottom sides respectively is provided with a screw 15, and relative tank 11 end positions of these cutter shaft 10 outer rims are provided with an axially extended chip area 12, this chip area one side is provided with chip area and forms the chip removal guide face 13 of inclination, make smear metal be able to rapid eliminating, the central authorities of cutter shaft 10 are provided with a runner 14 again, and chip area 12 surperficial appropriate locations are established one and are communicated with runner 14, and form the oblique hole 141 of inclination, make cooling fluid be able to directly flow out by oblique hole 141;

This two knife rest 20 is the opposed closing of 180 degree, each knife rest 20 is provided with the projection 21 of projection towards cutter shaft 10 1 sides, the projection 21 of each cutter shaft is embedded in the tank 11 of cutter shaft 10, two knife rests 20 differ from cutter shaft 10 1 sides and are convexly equipped with a tool rest 22 for blade 25 spiral shells admittedly, and these knife rest 20 relative cutter shaft 10 tanks 11 screws 15 positions, be provided with a microscler groove 23 of wearing that runs through, the side that this two knife rest 20 differs from cutter shaft is striden and is established a pressing plate 30, two screws, 15 positions of these pressing plate 30 relative cutter shafts 10, be provided with two perforation 31, and utilize two fixed screws 32 to run through pressing plate 30 perforation 31, reach knife rest 20 and wear the screw 15 that groove 23 is screwed on cutter shaft 10, so that knife rest 20 firmly is combined in cutter shaft 10 ends.

By above combination of components, as shown in Figure 2, because the outside of two knife rests 20 is provided with a pressing plate 30, and through fixed screw 32 lockings, make 30 compactings of two knife rests, 20 compression plates firmly be combined in cutter shaft 10 ends, therefore, effectively avoid cutter 1 to change the torsion that cutting produces, the phenomenon that causes knife rest 20 vibrations or extend out, and then the accuracy of lifting finished surface;

Moreover, as shown in Figure 4, the utility model is provided with axially extended chip area 12 and chip removal guide face 13 in cutter shaft 10 outer rim appropriate locations, the smear metal that produces when making cutting is able to upwards reach the derivation eliminating outwardly along chip area 12 and chip removal guide face 13 rapidly, the smear metal of avoiding curling is entangled with on two knife rests 20, the scratch work piece surface makes blade 25 have better heat radiating effect;

And for example shown in Figure 3, cutter shaft of the present utility model 10 central authorities are provided with runner 14, make cooling fluid by runner 14 through oblique hole 141 direct impulse blades 25, make blade 25 can cool off, lower the temperature, keeping best cutting state, and reach and prolong the blade effect in service life.

Claims

1, a kind of Hole boring knife mainly is made up of a cutter shaft, two knife rests, and its feature exists

In:

This cutter shaft is cylindric, its end face is provided with the tank that radially runs through, and a screw is respectively established in the appropriate location in the relative tank of cutter shaft end face two outsides, the relative tank end positions of this cutter shaft outer rim is provided with an axially extended chip area, and the central authorities of cutter shaft are provided with a runner, and each chip area surface appropriate location is respectively equipped with an oblique hole that is communicated with runner;

Two knife rests are the opposed closing of 180 degree, each knife rest is provided with the projection inlay card at the cutter shaft tank towards a side of cutter shaft, each knife rest side outwardly is installed with blade, the relative cutter shaft screwhole position of each knife rest is provided with a microscler groove of wearing that runs through, this two knife rests outside is striden and is established a pressing plate, and wear lock pressing plate and two knife rests with fixed screw, this knife rest firmly is combined in the cutter shaft end.

2, Hole boring knife as claimed in claim 1 is characterized in that: each chip area one side of this cutter shaft is provided with chip area and forms the chip removal guide face of inclination.