CN213945020U - Drilling reamer with additional cutting groove - Google Patents

Abstract

The application relates to a drilling reamer with an increased row of cutting grooves, which relates to the technical field of aluminum alloy machining tools and comprises a tool handle and a tool bit, wherein the tool bit is provided with a cutting edge and a supporting edge, and the supporting edge is positioned at the rear part of the cutting edge; a chip groove is arranged between the cutting edge and the supporting edge. This application helps promoting the coarse precision in hole, promotes machining efficiency's effect.

Description

Drilling reamer with additional cutting groove

Technical Field

The utility model belongs to the technical field of aluminum alloy processing cutter technique and specifically relates to a drilling reamer who increases row cutting groove.

Background

At present, drilling reamers have one or more teeth, rotating tools for cutting off a thin layer of metal on the surface of a machined hole, and rotating finishing tools with straight or spiral edges, which are mainly used for reaming or repairing holes. Meanwhile, the rotary cutter for cutting the thin metal layer on the machined surface of the hole can obtain the accurate size and shape of the hole after being machined by the reamer.

In the related art, in the processing of a hole on the surface of a part, in order to ensure the roundness of the hole, a worker needs to use a rough cutting tool to perform rough processing on the hole on the surface of the part, and after the rough processing is completed, the worker needs to select a finish machining tool with a 3-4-edge structure to perform finish machining on the rough processed hole.

In the related art described above, the inventors consider that the roughness of the hole is unstable and the processing efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the roughness unstability in hole, the lower problem of machining efficiency, this application provides a drilling reamer who increases row cutting groove.

The application provides a drilling reamer who increases row cut groove adopts following technical scheme:

a drilling reamer with an increased row of cutting grooves comprises a cutter handle and a cutter head, wherein the cutter head is provided with a cutting edge and a supporting edge, and the supporting edge is positioned at the rear part of the cutting edge; a chip groove is arranged between the cutting edge and the supporting edge.

By adopting the technical scheme, in the application, the chip removal groove is formed between the cutting edge and the supporting edge, and part of cutting chips are discharged through the chip removal groove, so that the accumulation of the cutting chips on the surface of a part after processing is reduced, the rough precision of a hole is promoted, and the processing efficiency is improved.

Optionally, the opening direction of the chip groove faces to the side opposite to the cutting direction of the cutting edge.

By adopting the technical scheme, the opening direction of the chip groove faces to the side opposite to the cutting direction of the cutting edge, so that the chip groove is beneficial to preventing the cutting chip from reducing the inclination efficiency of the cutting edge.

Optionally, the opening direction of the chip groove is radially expanded from the inner side of the cutter head to the cutter head.

Through adopting above-mentioned technical scheme, the chip groove is outside expansion setting, helps promoting chip removal efficiency.

Optionally, a tool shoulder is arranged between the tool bit and the tool handle, a transition inclined plane is formed on the tool shoulder, and the transition inclined plane inclines outwards from the tool bit to the tool handle.

Through adopting above-mentioned technical scheme, through being the slope setting with the tool shoulder, help promoting the rigidity between tool bit and the handle of a knife.

Optionally, the tool holder and the tool bit are provided with cooling liquid guide grooves, and the cooling liquid guide grooves penetrate through the tool holder and the tool bit.

Through adopting above-mentioned technical scheme, through set up the coolant liquid guide way on tool bit and handle of a knife, in the course of working, the coolant liquid flows through from the coolant liquid guide way, helps reducing the temperature of tool bit and handle of a knife, prolongs the life of cutter.

Optionally, an inner cooling hole is formed in the chip groove, and the inner cooling hole is communicated with the cooling liquid guide groove.

Through adopting above-mentioned technical scheme, through with the interior cold bore and the coolant liquid guide way intercommunication in the chip groove, help preventing that the cutting piece from piling up in the chip groove.

Optionally, one end of the tool bit, which faces away from the tool holder, is provided with a drill tip portion, and a drill tip angle of the drill tip portion is set to be 115-125 °.

Through adopting above-mentioned technical scheme, help promoting the centering effect of tool bit, promote staff's work efficiency.

Optionally, the tool shank, the tool shoulder, the tool bit and the drill tip part are integrally formed, and the tool shank, the tool shoulder, the tool bit and the drill tip part are coaxially arranged.

Through adopting above-mentioned technical scheme, help promoting the stability of cutter in the cutting process, on the other hand helps promoting the holistic structural strength of cutter.

To sum up, this application includes following at least one kind increases the drilling reamer beneficial technological effect who arranges the cutting groove:

through the arrangement of the chip grooves between the cutting edges and the supporting edges, the rough precision of the hole is improved, and the machining efficiency is improved.

Drawings

FIG. 1 is a perspective view of the present embodiment, primarily embodying a drill reamer with an increased row of flutes;

fig. 2 is a schematic diagram of the chip groove structure mainly embodied in the embodiment.

Reference numerals: 1. a knife handle; 11. a coolant guide groove; 2. a tool shoulder; 21. a transition bevel; 3. a cutter head; 31. a cutting edge; 32. a support blade; 33. a chip groove; 331. an internal cooling hole; 4. and (6) drilling a tip part.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a drilling reamer with an increased row of cutting grooves.

Referring to fig. 1 and 2, the drilling reamer with the increased chip removal grooves comprises a shank 1 and a tool bit 3, wherein the shank 1 and the tool bit 3 are coaxially arranged, the tool bit 3 is provided with a cutting edge 31 and a supporting edge 32, the supporting edge 32 is positioned at the rear part of the cutting edge 31, a chip removal groove 33 is formed between the cutting edge 31 and the supporting edge 32, and cutting chips are removed by the chip removal groove 33.

Referring to fig. 1 and 2, one end of the tool bit 3, which is far away from the tool holder 1, is provided with a drill tip portion 4, the drill tip angle of the drill tip portion 4 is set to 120 °, and the tool bit 3 and the drill tip portion 4 are coaxially arranged and integrally formed. Two cutting edges 31 and two support edges 32 are provided so as to face each other in the axial direction of the tip 3, and the cutting edges 31 are provided so as to correspond to the chip grooves 33.

Referring to fig. 2, the opening directions of both the flutes 33 are opposite to the cutting direction of the cutting edge 31, and the opening directions of both the flutes 33 are outwardly expanded from the inside of the tool bit 3.

Referring to fig. 1, a shoulder 2 is arranged between a tool shank 1 and a tool bit 3, the shoulder 2 and the tool bit 3 are coaxially arranged, and the shoulder 2 and the tool bit 3 are integrally formed. The tool shoulder 2 is provided with a transition inclined surface 21, and the transition inclined surface 21 inclines outwards from the tool bit 3 to the tool shank 1.

Referring to fig. 1, a tool holder 1 and a tool shoulder 2 are integrally formed, a coolant guide groove 11 is formed in the tool holder 1, the axis direction of the coolant guide groove 11 is parallel to the axis direction of the tool holder 1, and two ends of the coolant guide groove 11 in the axis direction respectively penetrate through two ends of the tool holder 1 opposite to a drill tip 4. Two coolant guide grooves 11 are provided at intervals.

Referring to fig. 1 and 2, the two chip flutes 33 are respectively provided with an internal cooling hole 331 therein, and the two internal cooling holes 331 are respectively communicated with the adjacent cooling liquid guide grooves 11. Part of the coolant flowing through the coolant guide groove 11 passes through the internal cooling hole 331 to clean the cutting chips attached in the chip discharge groove 33.

The implementation principle of the drilling reamer of this application embodiment increase row cutting groove does: during operation, a worker fixes the tool shank 1 on the fixture, then performs centering operation through the drilling tip part 4, then performs drilling and hole expanding operation on the part, partial cutting chips are discharged from the chip discharge groove 33, cooling liquid flows in from the cooling liquid guide groove 11, partial cooling liquid flows in the chip discharge groove 33 through the internal cooling hole 331, and the cutting chips in the chip discharge groove 33 are washed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an increase drilling reamer who arranges cutting groove, includes handle of a knife (1) and tool bit (3), its characterized in that: the cutter head (3) is provided with a cutting edge (31) and a supporting edge (32), and the supporting edge (32) is positioned at the rear part of the cutting edge (31); a chip groove (33) is arranged between the cutting edge (31) and the supporting edge (32).

2. The drilling reamer of claim 1 wherein: the opening direction of the chip groove (33) faces the opposite side of the cutting direction of the cutting edge (31).

3. The drilling reamer of claim 2 wherein: the opening direction of the chip groove (33) is radially expanded from the inner side of the cutter head (3) to the cutter head (3).

4. The drilling reamer of claim 1 wherein: be provided with sword shoulder (2) between tool bit (3) and handle of a knife (1), be formed with transition inclined plane (21) on sword shoulder (2), transition inclined plane (21) are outwards to handle of a knife (1) from tool bit (3).

5. The drilling reamer of claim 1 wherein: the cooling liquid guide groove (11) is formed in the knife handle (1) and the knife head (3) and penetrates through the knife handle (1) and the knife head (3).

6. The drilling reamer of claim 5 wherein: an inner cooling hole (331) is formed in the chip groove (33), and the inner cooling hole (331) is communicated with the cooling liquid guide groove (11).

7. The drilling reamer of claim 1 wherein: one end of the tool bit (3) departing from the tool shank (1) is provided with a drilling tip part (4), and the drilling tip angle of the drilling tip part (4) is set to be 115-125 degrees.

8. The drilling reamer of claim 7 wherein: the tool comprises a tool handle (1), a tool shoulder (2), a tool bit (3) and a drilling tip part (4) which are integrally formed, wherein the tool handle (1), the tool shoulder (2), the tool bit (3) and the drilling tip part (4) are coaxially arranged.

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