CN210877730U

CN210877730U - Deep hole drill bit with reaming function

Info

Publication number: CN210877730U
Application number: CN201921834919.5U
Authority: CN
Inventors: 朱俊庆
Original assignee: Zhenjiang Zhengda Tools Co ltd
Current assignee: Zhenjiang Zhengda Tools Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-06-30
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a deep hole drill bit with reaming function, which relates to the technical field of drill bits and comprises a drill cutter and a reamer which is arranged at the micro end of the drill cutter and is integrally formed with the drill cutter, wherein the drill cutter comprises a spiral cutting edge and a cutter point which is formed at one end of the cutting edge, the cutting edge comprises a chamfer cutting edge arranged at the cutter point, a main cutting edge and an auxiliary cutting edge which extend from the cutter point to the reamer direction, and the deep hole drill bit also comprises an inclined groove, a first spiral groove and a second spiral groove; the reamer includes the cutter arbor, the junction of cutter arbor and boring tool is provided with the guide angle, has seted up the chip groove along the length direction of cutter arbor on the cutter arbor, the tip of chip groove is the reamer sword, the utility model discloses can save the time of follow-up reaming, reduce manufacturing cost.

Description

Deep hole drill bit with reaming function

Technical Field

The utility model relates to a drill bit technical field, in particular to deep hole drill bit with reaming function.

Background

The drill bit is a tool for drilling through holes or blind holes in solid materials and reaming the existing holes, and the commonly used drill bits mainly comprise a twist drill, a flat drill, a center drill, a deep hole drill and a trepanning drill; the current drill bit is after accomplishing the drilling, in order to improve the quality of drilling, need carry out the reaming operation usually, and this just needs to move the work piece from the drilling machine to the reaming equipment on, very troublesome, moreover, the hole site skew can take place often in the drilling deep hole in-process for current drill bit, and the condition that the drilling precision is bad produces, consequently the utility model provides a deep hole drill bit with reaming function for solve the technical problem of the aforesaid existence.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a deep hole drill bit with reaming function for solve the technical problem that above-mentioned background art exists.

The above technical purpose of the present invention can be achieved by the following technical solutions: a deep hole drill with a reaming function comprises a drill cutter and a reamer, wherein the reamer is arranged at the micro end of the drill cutter and is integrally formed with the drill cutter, the drill cutter comprises a spiral cutting edge and a cutter point formed at one end of the cutting edge, the cutting edge comprises a chamfer cutting edge arranged at the cutter point, a main cutting edge and an auxiliary cutting edge, the main cutting edge and the auxiliary cutting edge extend towards the reamer from the cutter point, the deep hole drill further comprises an inclined groove, a first spiral groove and a second spiral groove, the chamfer cutting edge is a straight end of the inclined groove, the main cutting edge is a spiral end of the first spiral groove, the auxiliary cutting edge is a spiral end of the second spiral groove, and the length of the first spiral groove is greater than that of the second spiral groove; the reamer comprises a reamer rod, a guide angle is arranged at the joint of the reamer rod and the drill cutter, a chip discharge groove is formed in the reamer rod along the length direction of the reamer rod, the end part of the chip discharge groove is a reamer blade, and the axis of the reamer blade is distributed in an annular shape.

Preferably, the drill bit is integrally formed on the bit holder.

Preferably, the first helical groove and the second helical groove are separated by a main cutting edge, and the helix angle of the first helical groove and the second helical groove is the same.

Preferably, the width of the first spiral groove is smaller than the width of the second spiral groove.

Preferably, the depth of the first spiral groove is greater than the depth of the second spiral groove.

Preferably, the guide angle is at an angle of 30 degrees to the horizontal central axis of the arbor.

Preferably, the drill bit and the reamer are integrally formed by cemented carbide materials.

The utility model has the advantages as follows: the utility model relates to a deep hole drill bit with reaming function has the reamer at the rear end integrated into one piece of brill sword, at the in-process of boring the deep hole, carry out drilling work earlier by the brill sword, carry out the reaming operation by the reamer to the drilled hole again, saved the time of follow-up reaming, reduced manufacturing cost, in addition, the brill sword includes recess, first spiral groove and second spiral groove, has avoided the knife tip swing and has influenced the position precision of drilled hole, is the spiral end of first spiral groove with main cutting edge in addition, vice cutting edge is the spiral end of second spiral groove for the cutting edge gradually becomes the form for the spiral, has guaranteed the stationarity of drilling in-process, has further guaranteed the precision of drilled hole.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

With reference to fig. 1, the technical purpose of the present invention is achieved by the following technical solutions: a deep hole drill with a reaming function comprises a drill 1 made of hard alloy materials and a reamer 2 which is arranged at the tail end of the drill 1 and is integrally formed with the drill 1, wherein the drill 1 comprises a spiral cutting edge 11 and a cutting edge 12 formed at one end of the cutting edge 11, the cutting edge 11 comprises a chamfering cutting edge 111 arranged at the cutting edge 12, a main cutting edge 112 and an auxiliary cutting edge 113 which extend from the cutting edge 12 to the reamer 2, and further comprises an inclined groove 13, a first spiral groove 14 and a second spiral groove 15, the chamfering cutting edge 111 is a linear end of the inclined groove 13, the main cutting edge 112 is a spiral end of the first spiral groove 14, and the auxiliary cutting edge 113 is a spiral end of the second spiral groove 15; the reamer 2 comprises a cutter bar 21, the drill cutter 1 is integrally formed on the cutter bar 21, a guide angle 22 is arranged at the joint of the cutter bar 21 and the drill cutter 1, the angle between the guide angle 22 and the horizontal central axis of the cutter bar 21 is 30 degrees, a chip discharge groove 23 is formed in the cutter bar 21 along the length direction of the cutter bar 21, the end part of the chip discharge groove 23 is a reamer blade 24, and the axis of the chip discharge blade 24 is annularly distributed, the deep hole drill with the reaming function is characterized in that the reamer 2 is integrally formed at the rear end of the drill cutter 1, during the deep hole drilling process, the drill cutter 1 firstly performs drilling work, and then the reamer 2 performs reaming operation on the drilled hole, so that the time of subsequent holes is saved, the production cost is reduced, in addition, the drill cutter 1 comprises a groove, a first spiral groove 14 and a second spiral groove 15, and the problem that the position precision of the drilled hole is influenced by the swinging of the cutter point 12 is avoided, in addition, the main cutting edge 112 is the spiral end of the first spiral groove 14, the auxiliary cutting edge 113 is the spiral end of the second spiral groove 15, so that the cutting edge 11 is in a spiral gradual change shape, the stability in the drilling process is ensured, the precision of a drilled hole is further ensured, in addition, the accuracy of the drilled hole of the reamer 2 can be ensured by the guide angle 22 on the reamer 2, the difficulty of the drilled hole of the reamer 2 is reduced, the arrangement of the chip discharge groove 23 can reduce the quality condition that the drilled hole is influenced by the accumulation of waste chips on the reamer edge 24 in a reaming hole, and the normal operation of drilling and reaming is ensured.

Preferably, the first spiral groove 14 and the second spiral groove 15 are separated by the main cutting edge 112, and the spiral angles of the first spiral groove 14 and the second spiral groove 15 are the same, so that the cutter tip 12 is prevented from swinging to influence the position accuracy of the drilled hole.

The utility model discloses in, the length of first spiral groove 14 is greater than the length of second spiral groove 15 for secondary cutting edge 113 does not possess the ability of drilling, only undertakes the heat of deriving on the main cutting edge 112, improves the radiating efficiency, the width of first spiral groove 14 is less than the width of second spiral groove 15, and the great second spiral groove 15 of width can the whole cutting edge 11's of greatly increased thermal diffusivity, the degree of depth of first spiral groove 14 is greater than the degree of depth of second spiral groove 15, makes the chip removal performance of first spiral groove 14 increase, and few sweeps are piled up in the second spiral groove 15, has further guaranteed the radiating effect of second spiral groove 15.

The above description specifically describes the preferred embodiment of the present invention, but of course, the present invention can also adopt different forms from the above embodiments, and equivalent changes or corresponding modifications made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. The utility model provides a deep hole drill bit with reaming function, includes the reamer and sets up at the little end of reamer and reamer integrated into one piece, its characterized in that: the drill cutter comprises a spiral cutting edge and a cutter point formed at one end of the cutting edge, the cutting edge comprises a chamfer cutting edge arranged at the cutter point, a main cutting edge and an auxiliary cutting edge, the main cutting edge and the auxiliary cutting edge extend from the cutter point to the reamer, the main cutting edge, a first spiral groove and a second spiral groove are further included, the chamfer cutting edge is a linear end of the chamfer groove, the main cutting edge is a spiral end of the first spiral groove, the auxiliary cutting edge is a spiral end of the second spiral groove, and the length of the first spiral groove is greater than that of the second spiral groove; the reamer comprises a reamer rod, a guide angle is arranged at the joint of the reamer rod and the drill cutter, a chip discharge groove is formed in the reamer rod along the length direction of the reamer rod, the end part of the chip discharge groove is a reamer blade, and the axis of the reamer blade is distributed in an annular shape.

2. A deep hole drill with reaming function according to claim 1, characterized in that: the drill bit is integrally formed on the cutter rod.

3. A deep hole drill with reaming function according to claim 2, characterized in that: the first helical groove and the second helical groove are separated by the main cutting edge, and the helical angles of the first helical groove and the second helical groove are the same.

4. A deep hole drill with reaming function according to claim 3, characterized in that: the width of the first spiral groove is smaller than the width of the second spiral groove.

5. A deep hole drill with reaming function according to claim 4, characterized in that: the depth of the first spiral groove is greater than the depth of the second spiral groove.

6. A deep hole drill with reaming function according to claim 5, characterized in that: the angle between the guide angle and the horizontal central axis of the cutter bar is 30 degrees.

7. A deep hole drill with reaming function according to claim 6, characterized in that: the drill cutter and the reamer are integrally formed by hard alloy materials.