CN206105048U

CN206105048U - Diamond reamer

Info

Publication number: CN206105048U
Application number: CN201621111423.1U
Authority: CN
Inventors: 盛胜利
Original assignee: SHANGHAI TF PRECISION CUTTING TOOLS Co Ltd
Current assignee: SHANGHAI TF PRECISION CUTTING TOOLS Co Ltd
Priority date: 2016-10-10
Filing date: 2016-10-10
Publication date: 2017-04-19
Anticipated expiration: 2026-10-10

Abstract

The utility model provides a diamond reamer, including cutter body and handle of a knife, the cutter body is equipped with four kickers, is equipped with the chip groove between the adjacent kicker, and cutter body and handle of a knife are equipped with the inner -cooling hole of intercommunication, and the wash port that is equipped with in inlet opening that inner -cooling hole's both ends were equipped with with end part of the tool holder respectively and the chip groove is connected, the front end of kicker is equipped with the PDC blade, and the angle between the blade of double -phase adjacent kicker is gamma 1=84, gamma 2=102, gamma 3=91 and gamma 4=83 in proper order, the land of blade and relief angle all are not unified sizes, be 0.1, 0.2, 0.3 and 0.2mm in proper order with the corresponding land of angle, and the relief angle are 15, 12, 10 and 12 in proper order. Through the inner -cooling hole design, improve the performance of reamer cooling and chip removal, adopt the split -plot design that varies completely, combine cutter body strength to calculate every basil degree with feeding according to the rotational speed, according to tooth pitch and the difference that receives the impact force, confirm the numerical value of every sword land and relief angle to guarantee the stability of smear metal, reduce the probability that shakes the sword, promote the smooth finish of pore wall.

Description

A kind of diamond reamer

Technical field

This utility model is related to a kind of cutter, more particularly to a kind of diamond reamer.

Background technology

Reamer is used for the hole on ream workpiece after drilling (or reaming) processing, primarily to improving the processing essence in hole Degree, reduces the roughness on its surface, is the polish for hole and semi-finished cutter, the general very little of its allowance.With The development of machinery industry, user carries to crudy, process reliability, working (machining) efficiency, date of delivery of cutter of product etc. Requirements at the higher level are gone out.The cooling of conventional reamers is cooled down completely by wherein intracardiac cold hole, with following shortcomings：1st, to the cooling of cutting edge Deficiency, causes surface smoothness poor；2nd, chip removal is undesirable, affects workpiece quality, reduces cutter life, causes machining to be imitated Rate is low.3rd, generally using every sword symmetric design, low speed processing in being adapted to, but resonance is easily produced during High-speed machining, cause hole Wall has lines, and fineness is bad.

Utility model content

The purpose of this utility model is to provide for a kind of cooling performance that can improve interior cold reamer and suppresses by resonating Caused tremor simultaneously obtains the diamond reamer of excellent machining accuracy (surface smoothness).

To achieve these goals, the utility model proposes a kind of diamond reamer, including cutter hub and handle of a knife, the cutter hub It is connected with the handle of a knife, the cutter hub is provided with four side edges, chip area, the cutter hub and handle of a knife is provided between adjacent side edge The interior cold hole of connection is internally provided with, the one end in the interior cold hole is connected with the inlet opening having set by handle of a knife end, interior cold hole The other end is connected with the osculum being provided with chip area；The front end of each side edge is equipped with PDC blades, respectively the first blade, Second blade, the 3rd blade and fourth blade；Between first blade and the second blade angle γ 1 be 84 °, the second blade and Angle γ 2 is 102 ° between 3rd blade, and angle γ 3 is 91 ° between the 3rd blade and fourth blade, fourth blade and the first knife Angle γ 4 is 83 ° between piece；The land of first blade is 0.1mm and relief angle is 15 °, and the land of second blade is 0.2mm and relief angle are 12 °, and the land of the 3rd blade is 0.3mm and relief angle is 10 °, and the land of the fourth blade is 0.2mm and relief angle are 12 °.

Further, in a kind of described diamond reamer, the cutter hub and handle of a knife are integrated construction.

Further, in a kind of described diamond reamer, a tilt angle alpha is provided between the cutter hub and handle of a knife is 15 ° of hypotenuse.

Further, in a kind of described diamond reamer, the thickness of the PDC blades is 0.8mm.

Further, in a kind of described diamond reamer, the PDC blades are provided with a undercut ss, and undercut ss is 15°。

Further, in a kind of described diamond reamer, the pipeline between the interior cold hole and osculum is towards knife The end of body.

Compared with prior art, the beneficial effects of the utility model are mainly reflected in：By arranging unique cooling structure And chip discharging structure, the cooling performance and chip removal performance of reamer can be improved, so as to the use longevity improved crudy, extend cutter Life, the use cost for reducing cutter；Segmentation design is not waited completely using 4 swords, and every basil degree is according to rotating speed and feeds combined with cutter hub Out, the size of every sword land and relief angle determines optimal values to Strength co-mputation according to tooth pitch and the difference by impulsive force, it is ensured that The stability of chip.Enable reamer adding man-hour to play preferable antihunt action, effectively reduce the probability of shake knife, lift hole wall Fineness.

Description of the drawings

Fig. 1 is the structural representation of diamond reamer in this utility model；

Fig. 2 is the left view of cutter hub in Fig. 1.

Specific embodiment

As shown in figure 1, the utility model proposes a kind of diamond reamer, including cutter hub 1 and handle of a knife 2, the cutter hub with The handle of a knife is connected, and the cutter hub 1 is provided with four side edges 11, and chip area 12, the He of the cutter hub 1 are provided between adjacent side edge 11 The interior cold hole 4 for being internally provided with connection of handle of a knife 2, the inlet opening 41 that the one end in the interior cold hole 4 is provided with the end of handle of a knife 2 connects Connect, the other end in interior cold hole 4 is connected with the osculum 42 being provided with chip area 12.In process, by inlet opening 41 to Injection cooling water in reamer, cooling water flows through interior cold hole 4, after cooling down to reamer, is provided with final Jing chip areas 12 Osculum 42 is discharged, and cooling current direction side edge 11 is simultaneously cooled down to it, while cooling water is broken by what is gathered in chip area 12 Bits are gone out, and substantially improve chip removal performance.Further, the pipeline between the interior cold hole 4 and osculum 42 is towards cutter hub 1 End, to reduce the mobile obstacle to cooling water, it is ensured that the flow velocity of cooling water will not be greatly reduced, so as to ensure that chip resistance Energy.

Further, as shown in Fig. 2 in the implementation case, the front end of each side edge 11 is equipped with PDC blades 3, respectively For the first blade 31, the second blade 32, the 3rd blade 33 and fourth blade 34；Between the blade 32 of first blade 31 and second Angle γ 1 is 84 °, and angle γ 2 is 102 ° between the second blade 32 and the 3rd blade 33, the 3rd blade 33 and fourth blade 34 it Between angle γ 3 be 91 °, between the blade 31 of fourth blade 34 and first angle γ 4 be 83 °, the stress size of each side edge 11 is not Unanimously, resonant frequency is reduced；The land of first blade 31 is 0.1mm and relief angle is 15 °, the land of second blade 32 It it is 12 ° for 0.2mm and relief angle, the land of the 3rd blade 33 is 0.3mm and relief angle is 10 °, the sword of the fourth blade 34 Band is for 0.2mm and relief angle is 12 °.Segmentation design is not waited completely using 4 swords, per basil degree according to rotating speed and to feed combined with cutter hub strong Degree is calculated, and the size of every sword land and relief angle determines optimal values, it is ensured that cut according to tooth pitch and the difference by impulsive force The stability of bits.Land forms the external diameter of drill bit in the most external of drill bit, and keeps with the machined surface in hole contacting all the time. Due to the presence of land, gap defines, and this contributes to the heat for controlling friction and being produced by friction, additionally, gap can also make Coolant flows into drill bit cutting edge, further reduces the generation of heat.Land also helps that drilling is stable, increase the intensity of drill bit and Prevent drill bit adhesion.In addition, the size of land, surface smoothness and quantity can also affect the quality for drilling and add man-hour Between.

Further, in the implementation case, its preferred version is：The thickness of the PDC blades 3 is 0.8mm.Diamond Cutter has that hardness is high, comprcssive strength is high, heat conductivity and the characteristic such as wearability is good, and very high processing can be obtained in high-speed cutting Precision and working (machining) efficiency.Meanwhile, the PDC blades 3 are provided with a undercut ss, and undercut ss is 15 °, and reamer can be enable more smoothly to put In inserting broach shell.

Further, as shown in figure 1, in the implementation case, the cutter hub 1 and handle of a knife 2 are integrated construction, integral manufacturing It is convenient and simple, and Practical Performance is good, but it is also possible to assembly is combined by structures such as tooth-like, the indexable formulas of overall weldering.It is described The hypotenuse that a tilt angle alpha is 15 ° is provided between cutter hub 1 and handle of a knife 2, it is to avoid interference of the handle of a knife 2 to the chip removal of cutter hub 1, and is easy to Install with apparatus.

To sum up, in the present embodiment, a kind of diamond reamer of proposition, by arranging unique cooling structure and chip removal knot Structure, can improve the cooling performance and chip removal performance of reamer, so as to improving crudy, extending cutting-tool's used life, reduce The use cost of cutter；Segmentation design is not waited completely using side edge, every basil degree is according to rotating speed and feeds combined with cutter hub intensitometer Calculate, the size of every sword land and relief angle determines optimal values, it is ensured that chip according to tooth pitch and the difference by impulsive force Stability.Enable reamer adding man-hour to play preferable antihunt action, effectively reduce the probability of shake knife, lift the bright and clean of hole wall Degree.

Claims

1. a kind of diamond reamer, it is characterised in that including cutter hub and handle of a knife, the cutter hub is connected with the handle of a knife, the knife Body is provided with four side edges, and connect interior cold of being internally provided with of chip area, the cutter hub and handle of a knife is provided between adjacent side edge Hole, the one end in the interior cold hole is connected with the inlet opening having set by handle of a knife end, the osculum being provided with the other end and chip area Connection；The front end of each side edge is equipped with PDC (composite polycrystal-diamond) blade, respectively the first blade, the second blade, Three blades and fourth blade；Angle γ 1 is 84 ° between first blade and the second blade, the second blade and the 3rd blade it Between angle γ 2 be 102 °, between the 3rd blade and fourth blade angle γ 3 be 91 °, angle between fourth blade and the first blade γ 4 is 83 °；The land of first blade is 0.1mm and relief angle is 15 °, and the land of second blade is 0.2mm and relief angle For 12 °, the land of the 3rd blade is 0.3mm and relief angle is 10 °, and the land of the fourth blade is 0.2mm and relief angle is 12°。

2. diamond reamer according to claim 1, it is characterised in that the cutter hub and handle of a knife are integrated construction.

3. diamond reamer according to claim 1 a, it is characterised in that inclination angle is provided between the cutter hub and handle of a knife Degree α is 15 ° of hypotenuse.

4. diamond reamer according to claim 1, it is characterised in that the thickness of the PDC blades is 0.8mm.

5. diamond reamer according to claim 1, it is characterised in that the PDC blades are provided with a undercut ss, and undercut ss For 15 °.

6. diamond reamer according to claim 1, it is characterised in that the pipeline court between the interior cold hole and osculum To the end of cutter hub.