CN220547888U - High-performance drilling reamer - Google Patents

Abstract

The application relates to a high performance bores reamer, it includes stalk portion, support margin and drill point, the spiral groove that two asymmetries set up has been seted up to the support margin, the spiral groove forms the cutting edge with the cutting part outer wall, the spiral groove forms the end sword in drill point department, the cutting edge is close to drill point one end and has seted up the chip groove to tip one end, chip groove and cutting part outer wall form the chip removal sword, the length of chip groove is less than the length of spiral groove. Through the asymmetric support margin that sets up, in the high-speed course of working of drill reamer, the radial force that support margin received is not on a straight line, and the opposite side end of cutting edge on the drill reamer is empty cutter body clearance, makes the drill reamer have the space of letting out at the contralateral when high-speed processing is rotatory, reduces high-speed friction and thermal production, reduces the wearing and tearing of support margin, improves the life of boring the rubber sword, improves the stability of drill reamer course of working.

Description

High-performance drilling reamer

Technical Field

The application relates to the technical field of drill bits, in particular to a high-performance drilling reamer.

Background

A drill reamer is a tool for drilling holes in metal and consists of a drill bit and a reamer. The drill bit is used to drill holes in metal surfaces, while the reamer is used to enlarge the diameter of the holes to the desired size.

Most of the two-edge drills in the market at present adopt symmetrical cutting edges, because the supporting cutting edges are designed symmetrically by 180 degrees, the two symmetrical supporting cutting edges are stressed and pushed by each other in a straight line in the machining process, the radial forces are equal in theory, the stress directions are opposite, so that the stress is balanced, but because the drill rotates around the central axis of the cutter at high speed in the machining process, the two supporting cutting edges of the drill play a role in supporting each other in a machined hole, meanwhile, because of high-speed rotation, the supporting cutting edges are subjected to great friction force, high-speed friction generates high heat, and the two symmetrical supporting cutting edges generate high temperature along with the machining process, because the drill is always continuously machined, but because of symmetrical distribution, the actual backing space is lacking, the cutting edges are always in a high-speed friction state with the hole wall, the generated heat is fast softened, the hardness is reduced, the supporting performance of the drill is fast worn down after the cutting edges are fast worn, and the stability of the machining is affected.

Disclosure of Invention

In order to reduce the problem of rapid wear of the margin, the present application provides a high performance drilling reamer.

The application provides a high performance bores reamer, adopts following technical scheme:

the utility model provides a high performance bores reamer, includes stalk portion, support margin and drill point, the spiral groove that two asymmetries set up is seted up to the support margin, the spiral groove forms the cutting edge with the cutting part outer wall, the spiral groove forms the end sword in drill point department, the chip groove has been seted up to tip one end to cutting edge is close to drill point one end, chip groove and cutting part outer wall form the chip edge, the length of chip groove is less than the length of spiral groove.

Through adopting above-mentioned technical scheme, through the support margin that the asymmetry set up, in the high-speed course of working of drill reamer, the radial force that support margin received is not on a straight line, the opposite side end of cutting edge on the drill reamer is empty cutter body clearance, when making the drill reamer at high-speed processing rotation, cutting edge has the space of letting out in contralateral side, reduce high-speed friction and thermal production, reduce the wearing and tearing that support margin, improve the life of boring the rubber sword, improve the stability of drill reamer course of working, simultaneously, in the drill reamer course of working, conveniently make the iron fillings discharge fast through the chip groove.

Optionally, the spiral angle of the spiral groove is 15 degrees.

Through adopting above-mentioned technical scheme, through the helicla flute that helical angle is 15 degrees, in the drilling reamer rotation course of working, conveniently make iron fillings discharge from the helicla flute fast.

Optionally, the drill tip is provided with a chisel edge in communication with the helical flute.

By adopting the technical scheme, the cutting capability of the drilling reamer is improved through the chisel edge.

Optionally, the rake angle of the chisel edge is 12 degrees.

Through adopting above-mentioned technical scheme, the angle of rake is the chisel edge of 12 degrees, reduces the pressure that chisel edge cutting process received, improves the cutting effect.

Optionally, the chisel edge is arc-shaped.

Through adopting above-mentioned technical scheme, through the chisel edge of circular arc withdrawal form, make the iron fillings discharge more easily.

Optionally, the drill point is provided with an end surface connected with the chisel edge, the end surface is provided with a cooling hole, and the handle part of the cutter body is provided with a cooling channel communicated with the cooling hole.

Through adopting above-mentioned technical scheme, the coolant liquid is spouted from the terminal surface through cooling channel and cooling hole, discharges and cools off the iron fillings that the reamer produced.

Optionally, the apex angle of the drill tip is 130 degrees.

By adopting the technical scheme, the cutting effect of the drilling reamer is improved through the drill point with the apex angle of 130 degrees.

Optionally, a rounded corner is formed on the peripheral wall of the end of the shank portion, which is far away from the drill tip.

Through adopting above-mentioned technical scheme, through the fillet setting, conveniently insert the power supply socket position that drives drilling machine or bench drill that bores reamer pivoted with boring reamer's stalk portion position.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the asymmetric support margin that sets up, in the high-speed course of working of drill reamer, the radial force that support margin received is not on a straight line, and the opposite side end of cutting edge on the drill reamer is empty cutter body clearance, makes the drill reamer have the space of letting out at the contralateral when high-speed processing is rotatory, reduces high-speed friction and thermal production, reduces the wearing and tearing of support margin, improves the life of boring the rubber sword, improves drill reamer course of working's stability, simultaneously, at drill reamer course of working, conveniently makes the quick discharge of iron fillings through the chip groove.

Drawings

Fig. 1 is a schematic view of the overall structure of a high performance reamer.

Fig. 2 is an enlarged schematic view of the portion a in fig. 1.

Fig. 3 is a schematic view of the structure of the tip portion of a high performance reamer.

Reference numerals illustrate: 1. a handle; 11. round corners; 2. supporting the margin; 21. a spiral groove; 22. a cutting edge; 23. a chip removal groove; 24. chip removing blades; 3. a drill tip; 31. an end blade; 32. a chisel edge; 33. an end face; 4. and cooling holes.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a high-performance drilling reamer.

Referring to fig. 1 and 2, a high performance reamer includes a shank 1, a supporting margin 2, and a drill tip 3, the shank 1 is connected to a power source of a drilling machine or a bench drill for driving the reamer to rotate, and the drill tip 3 is contacted with a processed product to cut. The round angle 11 is formed in the peripheral wall of one end, far away from the drill point 3, of the handle 1, so that the handle 1 of the drilling reamer can be conveniently inserted into a power source socket of a drilling machine or a bench drill for driving the drilling reamer to rotate.

Referring to fig. 1 and 2, the supporting margin 2 is provided with two asymmetrically arranged spiral grooves 21, the spiral grooves 21 and the outer wall of the edge part form cutting edges 22, the spiral grooves 21 form end edges 31 at the drill tip 3, during the high-speed rotation process of the drill reamer, the end edges 31 perform cutting operation, the radial force born by the supporting margin 2 is not on the same straight line during the high-speed processing process of the drill reamer through the asymmetrically arranged supporting margin 2, and the other side end of the cutting edge 22 on the drill reamer is an empty cutter body gap, so that when the drill reamer rotates during the high-speed processing, the cutting edge 22 has a relief space on the opposite side, the high-speed friction and heat generation are reduced, the abrasion of the supporting margin 2 is reduced, the service life of the drill reamer is prolonged, and the stability of the processing process of the drill reamer is improved. Wherein, the spiral angle of the spiral groove 21 is 15 degrees, and in the process of the rotation processing of the drill reamer, scrap iron is conveniently and rapidly discharged from the spiral groove 21.

Referring to fig. 1 and 2, a chip groove 23 is formed in the cutting edge 22 near the end of the drill tip 3 toward the end, the chip groove 23 and the outer wall of the edge form a chip removing edge 24, the length of the chip groove 23 is smaller than that of the spiral groove 21, and in the machining process of the drill reamer, scrap iron is conveniently and rapidly discharged through the chip groove 23.

Referring to fig. 2, the tip angle of the drill tip 3 is 130 degrees, improving the cutting effect of the drill reamer.

Referring to fig. 2 and 3, the drill tip 3 is provided with a chisel edge 32 communicating with the helical groove 21, the rake angle of the chisel edge 32 is 12 degrees, the pressure applied to the chisel edge 32 during cutting is reduced, and the cutting effect is improved. Wherein, chisel edge 32 is the circular arc form of moving back of adopting convex circular arc, makes things convenient for the iron fillings to discharge along chisel edge 32 direction more easily.

Referring to fig. 2 and 3, the drill tip 3 is provided with an end face 33 connected with the chisel edge 32, the end face 33 is provided with a cooling hole 4, the shank 1 of the cutter body is provided with a cooling channel communicated with the cooling hole 4, and cooling liquid is sprayed out of the end face 33 through the cooling channel and the cooling hole 4, so that scrap iron generated by the drill reamer is discharged and cooled by the drill tip 3.

The implementation principle of the high-performance drilling reamer is as follows: through the asymmetric support margin 2 that sets up, in the high-speed course of working of drill reamer, the radial force that support margin 2 received is not on a straight line, and the opposite side end of cutting edge 22 on the drill reamer is empty cutter body clearance, makes the drill reamer have the space of letting out at the contralateral when high-speed processing is rotatory, reduces high-speed friction and thermal production, reduces the wearing and tearing of support margin 2, improves the life of drill reamer, improves drill reamer course of working's stability.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a high performance bores reamer, includes cutter body, its characterized in that: the cutter body comprises a handle (1), a supporting cutting edge (2) and a drill tip (3), wherein two asymmetrically arranged spiral grooves (21) are formed in the supporting cutting edge (2), cutting edges (22) are formed in the spiral grooves (21) and the outer walls of the cutting edge, end edges (31) are formed in the positions of the drill tip (3) on the spiral grooves (21), chip removal grooves (23) are formed in the positions, close to the drill tip (3), of one end of the cutting edges (22) towards one end of the end portion, chip removal grooves (23) and the outer walls of the cutting edge portion form chip removal edges (24), and the length of the chip removal grooves (23) is smaller than that of the spiral grooves (21).

2. The high performance reamer of claim 1, wherein: the spiral angle of the spiral groove (21) is 15 degrees.

3. The high performance reamer of claim 1, wherein: the drill tip (3) is provided with a chisel edge (32) which is communicated with the spiral groove (21).

4. A high performance reamer according to claim 3, wherein: the rake angle of the chisel edge (32) is 12 degrees.

5. A high performance reamer according to claim 3, wherein: the chisel edge (32) is circular arc-shaped.

6. A high performance reamer according to claim 3, wherein: the drill tip (3) is provided with an end face (33) connected with the chisel edge (32), the end face (33) is provided with a cooling hole (4), and the handle (1) of the cutter body is provided with a cooling channel communicated with the cooling hole (4).

7. The high performance reamer of claim 1, wherein: the apex angle of the drill tip (3) is 130 degrees.

8. The high performance reamer of claim 1, wherein: round corners (11) are formed in the peripheral wall of one end, far away from the drill tip (3), of the handle (1).