CN206653009U - Ladder is molded drilling reamer - Google Patents

Abstract

A kind of ladder is molded drilling reamer, including cutter hub and knife bar, has on cutter hub and prolongs the axially arranged blade of cross, and bit head, reamer are additionally provided with cutter hub, right angle platform, determines hole portion and flute；Bit head is located at cutter hub top, and reamer, right angle platform, determining hole portion, ladder is connected successively, and a flute is respectively set on blade.Ladder shaping drilling reamer described in the utility model is provided with bit head, reamer and determines hole portion, so that it in use, has saved the time of more allowing blade replacement, the loss of independent cutting knife is reduced, the rigidity of drilling reamer and the efficiency that drills and reams are improved, pore-forming also can be more round and smooth.

Description

Ladder is molded drilling reamer

Technical field

The utility model belongs to drilling reamer field, and drilling reamer is molded more particularly, to a kind of ladder.

Background technology

Reamer diameter tolerance directly affects the dimensional accuracy in processed hole, reamer manufacturing cost and service life.During fraising, Because the factor such as cutter tooth circular runout and ream dosage and cutting fluid can make aperture be more than reamer diameter, referred to as fraising " is expanded "；And because radius of pointless round of edge of cutting tool extrudes hole wall, then it can produce hole and recover and reduce, referred to as ream " contraction ".Typically " expand " and the factor of " contraction " exist simultaneously, end product should by test determine.Experience have shown that：It is general with high-speed reamer fraising Expand, typically shunk with carbide-tipped reamer fraising, during ream thin-wall hole, also often shunk.

Reamer outside dimension design load is bigger than normal or reamer cutting edge is jagged；Cutting speed is too high；The amount of feeding is improper or processes Surplus is excessive；Reamer tool cutting edge angle is excessive；Reamer is bent；Built-up edge is adhering on reamer cutting edge；Reamer cutting edge run-out tolerance surpasses during sharpening Difference；Cutting fluid selection is improper；Taper shank surface and oil contaminant is not wiped clean when installing reamer or the conical surface has bump injury；The tang of taper shank is inclined Taper shank circular cone is interfered after position loads machine tool chief axis；Main shaft is bent or main shaft bearing pine or damage excessively；Reamer floats dumb；With work Part is not coaxial；Two hands are firmly uneven during hand reaming, make reamer double swerve.

The content of the invention

In view of this, the utility model is directed to a kind of ladder shaping drilling reamer, can reduce blade when in use and rock, Drilling time is saved, makes pore-forming inwall rounder and more smooth.

To reach above-mentioned purpose, what the technical solution of the utility model was realized in：

A kind of ladder is molded drilling reamer, including cutter hub and knife bar, it is characterised in that：Have that to prolong cross axially arranged on cutter hub Blade, bit head, reamer are additionally provided with cutter hub, right angle platform, determines hole portion and flute；Bit head is located at cutter hub top, with Reamer, right angle platform, determining hole portion, ladder is connected successively, and a flute is respectively set on blade.

Further, described bit head top is in the arc of 2-2.6 radians.

Further, described reamer is oblique angle platform, and oblique angle is longer than bit head into 35-45 ° of angle, oblique angle platform upper surface diameter Diameter, it is shorter than oblique angle platform lower surface diameter.

Further, described right angle platform diameter is longer than reamer lower surface diameter, is shorter than and determines hole portion diameter.

Further, the groove width of described flute is less than the width of bit head, and the groove width of flute is as it is from drill bit Portion, which extends to, to be determined hole portion and gradually widens.

Further, the height of described right angle platform is the 1/6-1/4 of cutter hub height.

Further, the described height for determining hole portion is the 1/4-1/3 of cutter hub height.

Relative to prior art, ladder shaping drilling reamer described in the utility model has the advantage that：

（1）Ladder described in the utility model shaping drilling reamer is provided with bit head, reamer and determines hole portion so that its During use, the time of more allowing blade replacement has been saved, has reduced the loss of independent cutting knife, the rigidity of drilling reamer has been improved and drills and reams Efficiency, pore-forming also can be more round and smooth.

（2）The flute of ladder shaping drilling reamer described in the utility model is different from conventional chip area, and its position is unique, With good dust lead, chip breaking and chip removal performance, drilled and reamed suitable for high speed, high efficiency.

Brief description of the drawings

Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model. In accompanying drawing：

Fig. 1 is that the ladder described in the utility model embodiment is molded drilling reamer schematic diagram.

Description of reference numerals：

1- cutter hubs；2- knife bars；11- bit heads；12- reamers；13- right angle platforms；14- determines hole portion；15- flutes.

Embodiment

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can To be mutually combined.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ", The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that For to limitation of the present utility model.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that instruction Or imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately It is described, " multiple " are meant that two or more.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, on being understood by concrete condition State concrete meaning of the term in the utility model.

Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in figure 1, a kind of ladder shaping drilling reamer, including cutter hub 1 and knife bar 2, it is characterised in that：Have on cutter hub 1 and prolong The axially arranged blade of cross, bit head 11, reamer 12 are additionally provided with cutter hub 1, right angle platform 13, determines hole portion 14 and flute 15；Bit head 11 is located at the top of cutter hub 1, and reamer 12, right angle platform 13, determining hole portion 14, ladder is connected successively, and in blade One flute 15 of upper each setting.

The described top of bit head 11 is in the arc of 2-2.6 radians.

Described reamer 12 is oblique angle platform, and into 35-45 ° of angle, it is straight that oblique angle platform upper surface diameter is longer than bit head 11 at oblique angle Footpath, it is shorter than oblique angle platform lower surface diameter.

The described diameter of right angle platform 13 is longer than the lower surface diameter of reamer 12, is shorter than and determines the diameter of hole portion 14.

The groove width of described flute 15 is less than the width of bit head 11, and the groove width of flute 15 is as it is from bit head 11 extend to and determine hole portion 14 and gradually widen.

The height of described right angle platform 13 is the 1/6-1/4 of the height of cutter hub 1.

The described height for determining hole portion 14 is the 1/4-1/3 of the height of cutter hub 1.

Drilling reamer of the present utility model can use alloy tool steel（9SiCr）, chucking reamer material is high-speed steel（HSS）Deng Hard material is made, and hard material can be used to form overlay film on the surface of the blade of cutter hub 1, is so greatly improved the blade that drills and reams Wearability and inoxidizability, the service life of drilling reamer is further extended.

Tc4 titanium alloys are drilled and reamed 150 minutes respectively with drilling reamer of the present utility model and common reamer, after the completion of drilling and reaming Contrast pore-forming inwall, the abrasion very little of the utility model hole, surface are round and smooth；Then there are some flaws in contrast product, thus It can be seen that drilling reamer of the present utility model can reach the effect that preferably drills and reams.It is in addition, only with the position of flute 15 of the present utility model Spy, it is reasonable in design, waste residue can be more effectively discharged, still has part waste residue residual on the workpiece after being processed with contrast product, thus It can be seen that drilling reamer of the present utility model can preferably discharge residue waste material.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in Protection domain within.

Claims (7)

1. a kind of ladder is molded drilling reamer, including cutter hub and knife bar, it is characterised in that：Have on cutter hub and prolong the axially arranged knife of cross Sword, bit head, reamer are additionally provided with cutter hub, right angle platform, determines hole portion and flute；Bit head is located at cutter hub top, with expansion Hole portion, right angle platform, determining hole portion, ladder is connected successively, and a flute is respectively set on blade.

2. ladder according to claim 1 is molded drilling reamer, it is characterised in that：The bit head top is in 2-2.6 radians Arc.

3. ladder according to claim 2 is molded drilling reamer, it is characterised in that：Described reamer is oblique angle platform, oblique angle Into 35-45 ° of angle, oblique angle platform upper surface diameter is longer than bit head diameter, is shorter than oblique angle platform lower surface diameter.

4. the ladder shaping drilling reamer according to claim 1 or 3, it is characterised in that：The right angle platform diameter is longer than reaming Subordinate's end face diameter, it is shorter than and determines hole portion diameter.

5. ladder according to claim 1 is molded drilling reamer, it is characterised in that：The groove width of described flute is less than drill bit The width in portion, and the groove width of flute is determined hole portion and gradually widened as it is extended to from bit head.

6. ladder according to claim 4 is molded drilling reamer, it is characterised in that：The height of described right angle platform is that cutter hub is high The 1/6-1/4 of degree.

7. ladder according to claim 1 is molded drilling reamer, it is characterised in that：The described height for determining hole portion is that cutter hub is high The 1/4-1/3 of degree.