CN211304915U

CN211304915U - Double-edge chamfering extrusion drilling reamer

Info

Publication number: CN211304915U
Application number: CN201922407878.8U
Authority: CN
Inventors: 李荣瑞; 黎亮
Original assignee: Zhongshan Guanghe Precision Technology Co ltd
Current assignee: Zhongshan Guanghe Precision Technology Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-08-21
Anticipated expiration: 2029-12-28

Abstract

The utility model provides a twolip chamfer extrusion drilling reamer belongs to cutting tool technical field, twolip chamfer extrusion drilling reamer including the first cutting section that is used for the rough drilling, be used for the second cutting section of scaling-off cutting, be used for the deep hole drilling time location support cutter the canned paragraph and be used for the centre gripping section of fixed centre gripping. The utility model discloses a with the compound combination of multiple cutter, the clamping number of times of the cutter that significantly reduces avoids the repeated location benchmark, can one shot forming, is the compound deep-hole drill bit of efficient, can effectively improve work efficiency, meanwhile, reduces the roughness of being processed the pore wall and increases the metal texture molecular density by the processing material, has a fine structural improvement and bright effect to being processed the material. After the first cutting section for rough drilling is worn, the second cutting section for size cutting can be shortened to form the first cutting section, so that the drilling effect is ensured, and the waste of materials is reduced.

Description

Double-edge chamfering extrusion drilling reamer

Technical Field

The utility model belongs to the technical field of cutting tool, specifically speaking relates to a twolip chamfer extrusion drilling reamer.

Background

In the process of cutting tools, for enterprises, efficiency and time are costs, and the profit is determined; for the requirement process of finishing the roundness precision of the inner hole by drilling and reaming, particularly the requirement process of roughness and high precision, different requirements of the processes of drilling and semi-finish reaming, finish correction and the like in the machining process need to be finished by using a plurality of different cutters, the production replacement process wastes a large amount of labor and time, and the working efficiency is reduced.

Therefore, there is a need to design an efficient compound reamer that can be machined in a variety of situations without replacing different tools.

Disclosure of Invention

In order to solve the problem that provides among the background art, the utility model provides a twolip chamfer extrusion reamer can accomplish the processing of multichannel process, moreover, after the first cutting section wearing and tearing that is used for the rough drilling, can grind the second cutting section that is used for the scaling-off cutting short first cutting section of formation, guarantees drilling effect, reduces the waste of material.

The utility model provides a technical scheme that its technical problem adopted as follows:

the utility model provides a twolip chamfer extrusion drilling reamer, is including the first cutting section that is used for the rough drilling, the second cutting section that is used for the scaling-off cutting, the clamping segment that is used for the fixed-position support cutter when deep hole drilling, first cutting section end be provided with the second cutting section, second cutting section end is provided with the positioning segment, the positioning segment end is provided with the clamping segment, first cutting section, second cutting section, positioning segment and clamping segment integrated into one piece form the reamer cutter body, the inside spiral through-hole that runs through the reamer cutter body that is used for leading-in coolant liquid of offering of reamer cutter body.

Further, first cutting section and second cutting section be the twolip structure, the twolip is the heliciform setting, the interior concave part between the twolip of first cutting section forms first spiral escape canal, first cutting section cutting edge and second cutting section cutting edge one-to-one set up on same helix.

Furthermore, the cutting edge of the first cutting section extends to the tail end of the second cutting section, the outer diameter of the first cutting section is smaller than that of the second cutting section, an extension clearance groove is formed between the cutting edge of the first cutting section of the extension section and the rear positioning size cutting point of the cutting edge of the second cutting section on one side, a second spiral drainage groove is formed between the cutting edge of the first cutting section of the extension section and the front positioning size cutting point of the cutting edge of the second cutting section on the other side, and the first spiral drainage groove is communicated with the second spiral drainage groove.

Furthermore, the spiral through holes are provided with two spiral through holes, the upper parts of the two spiral through holes are distributed along the cutting edges of the first cutting sections, the upper parts of the two spiral through holes penetrate out from the centers of the tops of the cutting edges of the two first cutting sections respectively, and the lower parts of the two spiral through holes penetrate out from the bottoms of the clamping sections after being converged to the same through hole.

Furthermore, the positioning section is of a hexagonal structure, and the radian of the convex part is consistent with that of the clamping section.

The utility model has the advantages that:

1. the utility model discloses a combination such as rough drilling, scaling-off processing, back guide, once accomplish the BTA of cutter, especially adopt first cutting section and the second cutting section of twolip design, under the unchangeable circumstances in its core footpath, strengthen the torsion and the intensity of cutter, deep hole machining has fine stabilizing effect, including the six arris designs of location section, have very powerful back guide effect to step and interrupted step, especially six arris designs above that, there is one deburring and extrusion inner wall material molecular structure to the processed pore wall in addition, make and be processed the pore wall and have a good structural density, the improvement effect of the metal roughness on the organizational structure.

2. The utility model discloses a with the compound combination of multiple cutter, the clamping number of times of the cutter that significantly reduces avoids the repeated location benchmark, can one shot forming, is the compound deep-hole drill bit of efficient, can effectively improve work efficiency, meanwhile, reduces the roughness of being processed the pore wall and increases the metal texture molecular density by the processing material, has a fine structural improvement and bright effect to being processed the material.

3. When the first cutting section is worn, the second cutting section is ground only, the front end part of the cutting edge of the second cutting section is ground to be flush with the cutting edge of the first cutting section, so that the grinding part can form a first cutting section extension section, the structure is consistent with that of the first cutting section, the worn first cutting section is prolonged, the second cutting section is shortened, the fixed-size cutting precision cannot be influenced, meanwhile, the drilling effect can be ensured, the cutter can be reused, and the waste of materials is avoided.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of the present invention taken along line C-C;

FIG. 3 is a cross-sectional view of the present invention taken along line B-B;

FIG. 4 is a sectional view taken along line A-A of the present invention;

fig. 5 is a top view of the first cutting section of the present invention;

fig. 6 is a cross-sectional view of the present invention taken along line D-D.

In the figure, A-a first cutting section, B-a second cutting section, C-a positioning section, D-a clamping section, 1-a spiral through hole, 2-a first spiral drainage groove, 3-a first cutting section blade, 4-a second cutting section blade, 5-a rear positioning size cutting point, 6-an extension clearance groove, 7-a front positioning size cutting point and 8-a second spiral drainage groove.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

As shown in fig. 1-6, a reamer for double-edged chamfering and extrusion drilling comprises a first cutting section a for rough drilling, a second cutting section B for fixed-size cutting, a positioning section C for positioning and supporting a tool during deep hole drilling, and a clamping section D for fixed clamping, wherein the second cutting section B is arranged at the end of the first cutting section a, the positioning section C is arranged at the end of the second cutting section B, the clamping section D is arranged at the end of the positioning section C, and the first cutting section a, the second cutting section B, the positioning section C and the clamping section D are integrally formed to form a reamer body, so that multiple processes such as drilling, rough drilling and positioning can be completed, and when different requirements of processes such as semi-finish reaming and finish calibration are drilled, frequent replacement of the tool is not needed, labor and time investment are reduced, and the working efficiency is improved. The inside spiral through-hole 1 that runs through the reamer cutter body that is used for leading-in coolant liquid of offering of reamer cutter body, current reamer all is from outside interpolation coolant liquid, when drilling the deep hole, the coolant liquid can not reach the tool bit position, lead to the tool bit to generate heat easily and cross boiling hot and increase tool bit wearing and tearing speed, and this reamer sets up spiral through-hole 1, when drilling, the coolant liquid directly leads to the reamer tool bit by spiral through-hole 1, a series of problems such as the unable cooling of tool bit that brings that gets into the tool bit and the coolant liquid can effectively slow down the rate of wear of tool bit when avoiding deep hole drilling.

First cutting segment A and second cutting segment B be the twolip structure, the twolip is the heliciform setting, the interior concave part between the twolip of first cutting segment A forms first spiral escape canal 2, first cutting segment cutting edge 3 and the 4 one-to-one settings of second cutting segment cutting edge are on same helix. First cutting segment cutting edge 3 extend to second cutting segment B end always, first cutting segment A's external diameter is less than second cutting segment B's external diameter, form between the first cutting segment cutting edge 3 of extension and the back location size cutting point 5 of the second cutting segment cutting edge 4 of one side and extend and keep away empty groove 6, form second spiral escape canal 8 between the preceding location size cutting point 7 of the second cutting segment cutting edge 4 of opposite side, communicate between first spiral escape canal and the second spiral escape canal 8, it all can increase the chip removal space of second cutting segment B to extend and keep away empty groove 6 and second spiral escape canal 8. The first cutting section A is in a double-edge form and is provided with an independent front angle and a flapping cutting groove, so that the first cutting section A has better row cutting performance and cutting type compared with a conventional step drilling reamer, the cutting resistance and the carrying-in and breaking-out of cutting heat generated during cutting can be greatly reduced, the service life of a cutter is greatly prolonged, and meanwhile, the design of a positive tooth clearance is used on the design of a drill point of the first cutting section A, and a refined chamfering passivation process is combined to eliminate the micro-collapse state of the drill point part, so that the cutter is promoted to eliminate the initial defects generated by a manufacturing process. The second cutting segment B is a forming sizing part to realize sizing reaming, and also adopts a double-edge form and simultaneously extends the first cutting segment A, the design characteristic is that the core diameter strength of the lengthened drill bit is increased, under the normal condition, the strength of the lengthened drill bit is increased under the condition of not changing the core diameter of the cutter, the deep hole with special requirements has the function of increasing the cutting torque of the deep hole, and more importantly, the arrangement cutting space of the deep hole is not influenced, the double-edge design at the back part can increase the back supporting function of the cutter, so that the cutter generates the functions of supporting, extruding and positioning on the processed surface or inner wall under the cutting state, the precision, the roundness and the concentricity of the processed hole wall are ensured, the design of the front angle of the part is independently designed, and the effects of fine grinding and high finish degree are carried out, so that the cutting resistance and the higher appearance effect are reduced in the use process of the cutter, the processed surface has higher appearance effect which can reach less than Ra0.4. Meanwhile, the cutting edge 3 of the first cutting section extends to the tail end of the second cutting section B, the outer diameter of the first cutting section A is smaller than that of the second cutting section B, the cutter can be ground for a long time after being worn, the precision and the strength of the cutter are not influenced, when the first cutting section A is worn, only the second cutting section B needs to be ground, the front end part of the cutting edge 4 of the second cutting section is ground to be flush with the cutting edge 3 of the first cutting section, the ground part can form a first cutting section A extending section, the structure is consistent with that of the first cutting section A, the worn first cutting section A is prolonged, the second cutting section B is shortened, the fixed-size cutting precision cannot be influenced, the drilling effect can be guaranteed, and the grinding length of the second cutting section B can not be used for normal fixed-size reaming. The second cutting section B adopts a double-groove design, so that the later grinding of the cutter is improved decisively, the cutter can generate back chipping treatment for avoiding a vacancy in the grinding process, and the outer diameter of the pre-drilling part subjected to repeated grinding is eliminated by adopting the double-edge design, so that the cutter of the first part is failed.

Spiral through-hole 1 seted up two, 1 upper portions of two spiral through-holes are arranged along first cutting

segment cutting edge

3, 1 upper portions of two spiral through-holes are worn out by 3 top centers of two first cutting segment cutting edges respectively, the lower part collects and wears out by clamping section D bottom behind the same through-hole, with the cooperation of reamer twolip structure, guarantee that the coolant liquid can reach each position of tool bit, guarantee the cooling effect.

The positioning section C is of a hexagonal structure, the radian of the outer convex part is consistent with that of the clamping section D, the positioning section C mainly plays a role in back guiding, extruding, positioning and supporting and the like, and in the use process of the lengthened deep hole step drill, the cutter has the problem of deviation and the like due to the characteristics of deep hole cutting and the like. The utility model discloses increase the positioning segment C that adopts the design of six arriss in the design process, eliminate the off tracking problem of cutter. The positioning section C mainly plays a positioning role in the deep hole in-process to the reamer, and traditional reamer adopts the cylinder section to fix a position when the deep hole is fixed a position more, is the face contact between cylinder section and the drilling, and in the reamer drilling process, the piece can't be got rid of for the piece is in between cylinder section and the drilling for a long time, and the drilling pore wall produces the burr easily, the utility model discloses reamer positioning section C is six prismatic structure, and positioning section C is the point contact with the drilling pore wall, and outer convex part branch is used for fixing a position the cutter and supports, and interior concave part plays the chip removal effect, discharges the piece that will produce, avoids the drilling pore wall to produce the burr.

The utility model discloses a combination such as rough drilling, scaling-off processing, back guide, once accomplish the BTA of cutter, especially adopt first cutting section A and the second cutting section B of twolip design, under the unchangeable circumstances in its core footpath, strengthen the torsion and the intensity of cutter, deep hole machining has fine stabilizing action, including the six arris designs of location section C, have very powerful back guide effect to step and interrupted step, especially six arris designs above that, there is one to get rid of burr and extrusion inner wall material molecular structure in addition to the processed pore wall, make to have a good structural density by the processing pore wall, the improvement effect of the metal roughness on the organizational structure.

The utility model discloses a with the compound combination of multiple cutter, the clamping number of times of the cutter that significantly reduces avoids the repeated location benchmark, can one shot forming, is the compound deep-hole drill bit of efficient, can effectively improve work efficiency, meanwhile, reduces the roughness of being processed the pore wall and increases the metal texture molecular density by the processing material, has a fine structural improvement and bright effect to being processed the material.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The double-edge chamfering extrusion drilling reamer is characterized by comprising a first cutting section for rough drilling, a second cutting section for fixed-size cutting, a positioning section for positioning and supporting a cutter during deep hole drilling and a clamping section for fixing and clamping, wherein the second cutting section is arranged at the tail end of the first cutting section, the positioning section is arranged at the tail end of the second cutting section, the clamping section is arranged at the tail end of the positioning section, the first cutting section, the second cutting section, the positioning section and the clamping section are integrally formed to form a reamer cutter body, and a spiral through hole penetrating through the reamer cutter body and used for leading in cooling liquid is formed in the reamer cutter body.

2. The reamer of claim 1, wherein the first cutting section and the second cutting section are both of a double-edged structure, the double edges are spirally arranged, an inner concave portion between the double edges of the first cutting section forms a first spiral drainage groove, and the cutting edges of the first cutting section and the cutting edges of the second cutting section are correspondingly arranged on the same spiral line one by one.

3. The double-edged chamfering extrusion drilling reamer as claimed in claim 2, wherein the cutting edge of the first cutting section extends to the end of the second cutting section, the outer diameter of the first cutting section is smaller than that of the second cutting section, an extension clearance groove is formed between the cutting edge of the first cutting section of the extension section and the rear positioning size cutting point of the cutting edge of the second cutting section on one side, a second spiral discharge groove is formed between the cutting edge of the second cutting section on the other side and the front positioning size cutting point of the cutting edge of the second cutting section on the other side, and the first spiral discharge groove and the second spiral discharge groove are communicated with each other.

4. The double-edged chamfering extrusion drilling reamer as claimed in claim 2, wherein the number of the spiral through holes is two, the upper parts of the two spiral through holes are arranged along the cutting edge of the first cutting section, the upper parts of the two spiral through holes respectively penetrate through the centers of the tops of the cutting edges of the two first cutting sections, and the lower parts of the two spiral through holes are converged to the same through hole and then penetrate through the bottom of the clamping section.

5. The reamer as claimed in any one of claims 1 to 4, wherein the locating section is a hexagonal structure and the radian of the convex portion is consistent with the radian of the clamping section.