TWM559221U - Semicircular drill - Google Patents
Semicircular drill Download PDFInfo
- Publication number
- TWM559221U TWM559221U TW106217141U TW106217141U TWM559221U TW M559221 U TWM559221 U TW M559221U TW 106217141 U TW106217141 U TW 106217141U TW 106217141 U TW106217141 U TW 106217141U TW M559221 U TWM559221 U TW M559221U
- Authority
- TW
- Taiwan
- Prior art keywords
- drill
- chip breaking
- cutting edge
- cutting
- edge
- Prior art date
Links
Landscapes
- Drilling Tools (AREA)
Abstract
一種半圓鑽頭(二),在切削時能同時產生隱藏式的頂心以及導柱功能藉以優化加工孔精度,欲成形的孔先由具有偏心的鑽尖、斷屑台階的切削刃切削,接續由鑽身、鑽刃持續增加孔徑,據此,鑽尖、階梯刃為偏心的結構,使中心靜點達到最小化,並將切削時產生的切屑細化進而達到鑽孔阻力最小化之優勢,提高切削孔徑的精度及穩定性,強化鑽尖、鑽刃以及鑽身剛性的半圓鑽頭(二)。 A semi-circular drill bit (2) can simultaneously produce a concealed top core and a guide column function during cutting to optimize the precision of the machining hole. The hole to be formed is first cut by a cutting edge having an eccentric drill tip and a chip breaking step, followed by cutting The drill body and the drill edge continue to increase the aperture. According to this, the drill tip and the stepped edge are eccentric structures, the center static point is minimized, and the chips generated during cutting are refined to achieve the advantage of minimizing the drilling resistance and improving. Precision and stability of the cutting aperture, strengthening the drill tip, the drill edge and the rigid semi-circular drill bit (2).
Description
本創作關於切削工具有關,特別是指一種具有半圓單刃的結構特徵的鑽頭,在切削時能同時產生隱藏式的頂心,欲成形的孔先由具有斷屑台階的鑽尖切削,接續由鑽身持續增加孔徑,據此,鑽尖為偏心的結構,使中心靜點達到最小化,並將切削時產生的切屑細化進而達到鑽孔阻力最小化之優勢,提高切削孔徑的精度,強化鑽尖、鑽身剛性的半圓鑽頭(二)。 The present invention relates to a cutting tool, in particular to a drill having a semi-circular single-blade structural feature, which can simultaneously produce a concealed top core during cutting, and the hole to be formed is first cut by a drill tip having a chip breaking step, followed by The drill body continuously increases the aperture. According to this, the drill tip is eccentric structure, which minimizes the center static point, and refines the chips generated during cutting to achieve the advantage of minimizing the drilling resistance, improving the precision of the cutting aperture and strengthening A semi-circular drill bit with a drill tip and a rigid body (2).
按,習用麻花鑽頭主要是藉由兩個鑽刃來移除材料產生孔徑,當鑽頭切削材料時,由兩鑽刃產生之切屑順著排屑槽排出孔外,該切屑寬度大,在有限的排屑槽內(槽寬約1/4鑽頭直徑,切屑寬度約1/2鑽頭直徑)將會與孔徑及排屑槽產生摩擦,因而產生高熱以及側向阻力,熱將會很快地傳遞至鑽頭及材料上而影響鑽頭之切削能力,而側向阻力將會影響鑽頭切削孔徑之位置度,因此一般麻花鑽頭最需克服的主要技術瓶頸是在排屑以及鑽孔位置度之精度提升。 According to the conventional twist drill, the diameter of the material is mainly obtained by removing the material by two drill blades. When the drill bit cuts the material, the chips generated by the two drill blades are discharged along the discharge chute, and the chip width is large and limited. Inside the flute (slot width about 1/4 bit diameter, chip width about 1/2 bit diameter) will rub against the bore and the flute, resulting in high heat and lateral resistance, heat will be transferred quickly The drill bit and the material affect the cutting ability of the drill bit, and the lateral resistance will affect the position of the cutting hole of the drill bit. Therefore, the main technical bottleneck that the general twist drill bit needs to overcome is the accuracy of the chip removal and the drilling position.
然而,對於小孔徑加工而言,切削阻力小,排除切屑順暢,但是對於大孔徑加工而言,當鑽頭的直徑越大時,在切 削材料所產生的的切削阻力隨之增加,因此容易導致鑽刃阻力過大,產生的寬大切屑被卡在排屑槽與孔徑及排屑槽產生摩擦高熱,造成孔徑表面粗糙(起毛)的情況,若持續切削下則會造成鑽頭燒融,進而產生鑽刃崩刃更會產生鑽深斷裂的問題。 However, for small-aperture machining, the cutting resistance is small, and the chip is excluded, but for large-aperture machining, when the diameter of the drill is larger, the cutting is The cutting resistance generated by the material is increased, so that the resistance of the cutting edge is too large, and the generated large chips are caught in the chip flute and the hole and the chip flute, causing friction and high heat, causing the surface of the aperture to be rough (raised). If the cutting is continued, the bit will be melted, and the chipping of the cutting edge will cause the problem of deep drilling fracture.
為了解決上述的問題,在中華民國發明專利第I273937號之導柱式鑽頭,如第一、二圖所示,該鑽頭(101)設有一中心導柱(102),在切削時該導柱(102)具有中心導引鑽切之功效以及提升鑽頭(101)切屑時之剛性,使得孔徑之位置精度得以提昇。但是該案件仍然有下列的缺點:(1)鑽尖(103)設置在中心處即是靜點,在切削時鑽尖(103)沒有切削功能反而增加切削阻力;(2)如該案的第5圖所示,為了降低切削阻力,在鑽刃(104)上設有多個凹槽(105),此種切削邊之非連續直線切割線的設計可增加鑽頭(101)的切屑能力,且降低切屑成團狀捲在鑽刃(104)的末端。透過這類型的結構一方面縮小了鑽尖(303),另一方面透過複數的切刃將切屑細小化,減少排屑阻力;惟,在鑽刃(104)上研磨出凹槽(105)能降低切削阻力也同時降低鑽頭(101)剛性,因此加工必須降低進給率避免鑽頭(101)磨耗,這樣的方式不僅延長了加工時間,造成了工具機電能損耗、成本增加以及失去了競爭力。 In order to solve the above problem, in the guide column type drill bit of the Republic of China Invention Patent No. I273937, as shown in the first and second figures, the drill bit (101) is provided with a center guide post (102) which is cut during cutting ( 102) With the effect of center-guided drilling and cutting and the rigidity of the drill bit (101), the positional accuracy of the aperture is improved. However, the case still has the following disadvantages: (1) The drill tip (103) is set at the center, that is, the static point. When cutting, the drill tip (103) has no cutting function but increases the cutting resistance; (2) as in the case In the figure 5, in order to reduce the cutting resistance, a plurality of grooves (105) are provided on the cutting edge (104), and the design of the discontinuous straight cutting line of the cutting edge increases the chipping ability of the drill bit (101), and The chip is reduced in a lumpy roll at the end of the cutting edge (104). Through this type of structure, the drill tip (303) is reduced on the one hand, and the chip is reduced by a plurality of cutting edges on the other hand to reduce the chip removal resistance; however, the groove (105) can be ground on the drill edge (104). Reducing the cutting resistance also reduces the rigidity of the drill bit (101), so the machining must reduce the feed rate to avoid the bit (101) wear. This way not only prolongs the machining time, but also causes the power loss, cost increase and loss of competitiveness of the machine tool.
本創作的主要目的即在於提供一種半圓鑽頭(二),具有半圓單刃的結構特徵,該鑽身上設有至少一個以上的斷屑台 階,其具備斷屑功能以及在轉動時同時形成中心頂心功能,欲成型孔徑精度高且穩定性高。 The main purpose of this creation is to provide a semi-circular drill bit (2) having a semi-circular single-edged structural feature with at least one chip breaking station on the drill body. The step has the function of chip breaking and the function of forming the center core at the same time of rotation, and the hole diameter to be molded is high and the stability is high.
本創作的另一目的即在於提供一種半圓鑽頭(二),該鑽身具有倒錐度,且鑽身延伸部位徑向縮小,其優點在於在轉動所產生的摩擦阻力、微細切屑的摩擦阻力可大幅降低,並會得優異的孔加工精度穩定特性。 Another object of the present invention is to provide a semi-circular drill bit (2) having a reverse taper and a radially narrowing of the extension portion of the drill body, which has the advantages that the frictional resistance generated by the rotation and the frictional resistance of the fine chip can be greatly increased. Reduced, and will have excellent hole processing accuracy and stability characteristics.
本創作的再一目的即在於提供一種半圓鑽頭(二),其鑽尖設置在中心線的一側,即是非設置在中心,因此鑽尖在轉動切削能同時形成一隱形的轉動中心頂心,一方面能消除切削所造成的鑽尖阻力,另一方面在孔徑中依據鑽尖與至少一個以上的斷屑台階的位置形成複數個斷屑點,使得切屑細小化,更容易排出;再者孔徑尺寸與精度高。 A further object of the present invention is to provide a semi-circular drill bit (2) having a drill tip disposed on one side of the center line, that is, not disposed at the center, so that the drill tip can simultaneously form an invisible center of rotation center during the rotary cutting. On the one hand, it can eliminate the drill tip resistance caused by cutting, and on the other hand, a plurality of chip breaking points are formed in the aperture according to the position of the drill tip and at least one chip breaking step, so that the chip is finer and easier to discharge; High size and precision.
可以達到上述目的的結構,請參閱第三至八圖,包含有:一柄身(301)、一鑽身(302)、一鑽尖(303)、一斷屑台階(304)與一階梯刃(307)所構成,該斷屑台階(304)設置在該鑽身(302)頂部並沿著中心軸(C)朝遠離該鑽身(302)的方向延伸一距離,該斷屑台階(304)的直徑小於該鑽身(302)頂部的直徑,該鑽尖(303)係由該斷屑台階(304)延伸出的中心切刃(401)與鑽刃(402)所構成,該鑽身(302)與該斷屑台階(304)呈半圓形的單刃結構,該鑽尖(303)設置在中心軸(C)的一側,該鑽尖(303)係該斷屑台階(304)延伸出的中心切刃(401)、鑽刃(402)的最高點,由該鑽身(302)的剖面為界能定義出一第一邊(305)、一第二邊(306),從該第一邊(305)一側該鑽尖(303) 朝著鑽刃(401)方向傾斜形成一第一中心切刃角(A1-1)[參閱第四圖,鑽刃(401)與X方向之夾角],該鑽身(302)與該斷屑台階(304)形成一螺旋狀的階梯刃(307),該階梯刃(307)具有階梯切削角(A2)[參閱第五圖,階梯刃(307)與Y方向之夾角],從該第二邊(306)一側該鑽尖朝著鑽刃(402)方向傾斜形成一第二中心切刃角(A1-2)[參閱第四圖,鑽刃(402)與Y方向之夾角],並且該鑽身(302)與該鑽尖(303)的同一側設置一鑽身逃隙後角(A5)。 For the structure that can achieve the above purpose, please refer to the third to eighth figures, including: a handle body (301), a drill body (302), a drill point (303), a chip breaking step (304) and a step edge. (307), the chip breaking step (304) is disposed at the top of the drill body (302) and extends along the central axis (C) away from the drill body (302) by a distance, the chip breaking step (304) The diameter of the drill (303) is smaller than the diameter of the top of the drill body (302), and the drill tip (303) is formed by a central cutting edge (401) and a cutting edge (402) extending from the chip breaking step (304). (302) a semi-circular single-blade structure with the chip breaking step (304), the drill point (303) being disposed on one side of the central axis (C), the drill point (303) being the chip breaking step (304) The center cut edge (401) and the highest point of the drill edge (402) are defined by the cross section of the drill body (302) to define a first side (305) and a second side (306). The drill point (303) from the side of the first side (305) Tilting toward the cutting edge (401) to form a first central cutting edge angle (A1-1) [refer to the fourth figure, the angle between the cutting edge (401) and the X direction], the drilling body (302) and the chip breaking The step (304) forms a spiral stepped edge (307) having a stepped cutting angle (A2) [refer to the fifth figure, the angle between the stepped edge (307) and the Y direction], from the second The side of the side (306) is inclined toward the cutting edge (402) to form a second central cutting edge angle (A1-2) [refer to the fourth figure, the angle between the cutting edge (402) and the Y direction], and The drill body (302) is provided with a drill back clearance angle (A5) on the same side of the drill point (303).
請參閱第三至五圖,進一步定義本創作各個刃部的特點:首先,該鑽尖(303)係由一中心切刃(401)[即是第四圖具有傾斜平的切刃處]與一從鑽尖(303)朝右下方傾斜弧狀的鑽刃(402)所構成的結構,其可對加工物透過中心切刃(401)、鑽刃(402)切削;該斷屑台階具有一定距離的導柱(403)與在該導柱(403)側邊的台階切刃(404)所構成的結構;該階梯刃(307)則是由該台階切刃(404)與鑽身切刃(405)所構成的切削刃部。 Please refer to Figures 3 to 5 to further define the characteristics of each blade of the creation: first, the drill tip (303) is composed of a central cutting edge (401) [that is, the fourth figure has a slanted flat cutting edge] and a structure formed by tilting an arc-shaped cutting edge (402) from the drill tip (303) toward the lower right side, which can cut the workpiece through the center cutting edge (401) and the cutting edge (402); the chip breaking step has a certain a structure formed by a guide post (403) of a distance and a step cutting edge (404) on a side of the guide post (403); the stepped edge (307) is formed by the step cutting edge (404) and the drill cutting edge (405) The cutting edge portion formed.
透過上述的結構本創作可獲得的優點簡述如下:該鑽尖(303)、該斷屑台階(304)在高速轉動切削材料且同時形成隱形轉動支撐頂心,在實際作業時該鑽尖(303)與斷屑台階(304)先切削出較小孔徑,接續由該階梯刃(307)對孔加工切削大於該斷屑台階(304)的孔徑,跟習用技術相較下本創作切屑細小化具有(結構強化之優勢)節能的功效;又,該鑽尖(303)與該斷屑台階(304)為偏心的設計,一方面讓中心靜點最小化,另一方在切削作業中形成隱藏式頂心能保持左右的平衡,且強化鑽尖(303)的剛性,提高孔徑精 度且鑽頭的穩定性高。 The advantages obtained by the above-described structure creation are briefly described as follows: the drill tip (303) and the chip breaking step (304) rotate the cutting material at a high speed and simultaneously form a top end of the invisible rotation support, which is actually used during the operation ( 303) cutting the smaller aperture with the chip breaking step (304), and then cutting the hole by the step edge (307) to cut the hole larger than the chip breaking step (304), compared with the conventional technique, the chip is fined. The utility model has the advantages of (the advantage of structural strengthening) energy saving; further, the drill point (303) and the chip breaking step (304) are eccentric design, on the one hand, the central static point is minimized, and the other side forms a hidden type in the cutting operation. The top center can maintain the balance of the left and right, and strengthen the rigidity of the drill tip (303), improve the aperture precision And the stability of the drill bit is high.
在本創作的實施方式中,如第六圖所示,該鑽身(302)具有該鑽身逃隙後角(A5)一側可選擇性的研磨出一鑽身切刃寬(H),其可保持著該鑽身(302)在孔加工時切刃強度增加鑽身(302)的使用壽命,可依據切削的材料有不同的鑽身切刃寬(H)。 In the embodiment of the present invention, as shown in the sixth figure, the drill body (302) has a drill blade edge (A5) side selectively grinds a drill cutting edge width (H), It can maintain the life of the drill body (302) during the hole processing to increase the service life of the drill body (302), and can have different drill cutting width (H) depending on the material to be cut.
在本創作的實施方式中,如第六圖所示,該第一邊(305)觀視時,該鑽身(302)具有鑽身倒錐度(A4),且鑽身(302)延伸部位徑向縮小藉以降低接觸面積,其優點在於在轉動所產生的摩擦阻力、微細切屑的摩擦阻力可大幅降低,並會得優異的孔加工精度穩定特性,與習用技術鑽身為等徑結構相較下,習用結構鑽身與孔接觸面過大,產生的摩擦阻力過大,導致加工的孔尺寸、表面精度不穩定。 In the embodiment of the present invention, as shown in the sixth figure, when the first side (305) is viewed, the drill body (302) has a drill taper (A4), and the drill body (302) extends the diameter. The advantage of reducing the contact area by shrinking is that the frictional resistance generated by the rotation and the frictional resistance of the fine chips can be greatly reduced, and excellent hole processing accuracy and stability characteristics are obtained, compared with the conventional technique of drilling the body to an equal diameter structure. The conventional structure is too large in contact with the hole, and the frictional resistance generated is too large, resulting in unstable hole size and surface precision.
在本創作的實施方式中,如第七圖的俯視位置所示,該鑽身逃隙後角(A5)連接有一支撐圓周面(308),該支撐圓周面(308)上可選擇性的設置至少一個以上的逃隙溝槽(A5-2),藉由鑽身逃隙後角(A5)與逃隙溝槽(A5-2)的設置可減少支撐圓周面(308)與工件的接觸面積、將微細切屑排入逃隙溝槽(A5-2)內,進一步降低摩擦阻力、細微切屑的摩擦阻力以及提高孔表面精度。(實施方式詳細說明) In the embodiment of the present invention, as shown in the top view of the seventh figure, the drill body escape back angle (A5) is connected with a support circumferential surface (308), which can be selectively disposed on the support circumferential surface (308). At least one of the escape grooves (A5-2) can reduce the contact area of the support circumferential surface (308) with the workpiece by the arrangement of the back clearance angle (A5) and the escape groove (A5-2) of the drill body The fine chips are discharged into the escape groove (A5-2) to further reduce frictional resistance, frictional resistance of fine chips, and improve the surface precision of the holes. (Detailed description of the embodiment)
在前述的半圓頂心鑽頭中,該鑽尖(303)與該斷屑台階(304)在切削時形成多個斷屑點,可降低切削阻力與切屑細小化。(實施方式詳細說明) In the aforementioned semi-dome core drill, the drill tip (303) and the chip breaking step (304) form a plurality of chip breaking points during cutting, which can reduce cutting resistance and chip size. (Detailed description of the embodiment)
本創作可以選用如第三至八圖所示的半圓直刃結構外,該鑽身(302)亦可實施呈螺旋刃之造形,該螺旋處即形成排屑溝,能應用在具有延展性高之材質以及深孔加工。 The creation can use a semi-circular straight edge structure as shown in the third to eighth figures. The drill body (302) can also be formed into a spiral blade shape, which forms a chip ditch and can be applied to have high ductility. Material and deep hole processing.
「習用」 "practice"
(101)‧‧‧鑽頭 (101)‧‧‧ drill bit
(102)‧‧‧導柱 (102)‧‧‧ Guide column
(103)‧‧‧鑽尖 (103)‧‧‧ drill tip
(104)‧‧‧鑽刃 (104)‧‧‧Drilling
(105)‧‧‧凹槽 (105) ‧‧‧ grooves
「本創作」 "This creation"
(301)‧‧‧柄身 (301) ‧‧‧handle
(302)‧‧‧鑽身 (302)‧‧‧‧
(303)‧‧‧鑽尖 (303)‧‧‧ drill tip
(304)‧‧‧斷屑台階 (304) ‧‧‧ chip breaking steps
(305)‧‧‧第一邊 (305) ‧ ‧ first side
(306)‧‧‧第二邊 (306) ‧‧‧ second side
(307)‧‧‧階梯刃 (307)‧‧‧Step Blade
(308)‧‧‧支撐圓周面 (308)‧‧‧Support circumferential surface
(401)‧‧‧中心切刃 (401)‧‧‧Center cutting edge
(402)‧‧‧鑽刃 (402)‧‧‧Drilling
(403)‧‧‧導柱 (403)‧‧‧ Guide column
(404)‧‧‧台階切刃 (404) ‧‧‧step cutting
(405)‧‧‧鑽身切刃 (405)‧‧‧Drilling cutting edge
(A1-1)‧‧‧第一中心切刃角 (A1-1) ‧‧‧First Center Cutting Edge
(A1-2)‧‧‧第二中心切刃角 (A1-2) ‧‧‧Second center cutting edge angle
(A2)‧‧‧階梯切削角 (A2) ‧‧‧step cutting angle
(A4)‧‧‧鑽身倒錐度 (A4) ‧‧‧Drilling taper
(A5)‧‧‧鑽身逃隙後角 (A5) ‧‧‧Drilling back angle
(A5-2)‧‧‧逃隙溝槽 (A5-2) ‧‧‧ escape groove
(C)‧‧‧中心軸 (C) ‧ ‧ central axis
(H)‧‧‧鑽身切刃寬 (H)‧‧‧Drilled cutting width
(S)‧‧‧斷屑點 (S) ‧‧‧ chip breaking point
第一圖係習用具有導柱的鑽頭結構示意圖。 The first figure is a schematic view of the structure of a drill bit with a guide post.
第二圖係習用結構之導柱部局部放大圖。 The second figure is a partial enlarged view of the guide column portion of the conventional structure.
第三圖係本創作之結構立體圖。 The third picture is a perspective view of the structure of the creation.
第四圖係該鑽尖與該斷屑台階之局部放大圖。 The fourth figure is a partial enlarged view of the drill tip and the chip breaking step.
第五圖係該階梯刃之局部放大圖 The fifth picture is a partial enlarged view of the stepped blade
第六圖係該第一邊之結構示意圖。 The sixth figure is a schematic structural view of the first side.
第七圖係該第二邊之結構示意圖。 The seventh figure is a schematic structural view of the second side.
第八圖係本創作使用狀態圖。 The eighth figure is a state diagram for the use of this creation.
為使 貴審查委員能對本創作之特徵與其特點有更進一步之了解與認同,茲列舉以下較佳之實施例並配合圖式說明如下:請參閱第三至八圖,本創作之半圓鑽頭(二)主要包含有:一柄身(301)、一鑽身(302)、一鑽尖(303)、一斷屑台階(304)與一階梯刃(307)所構成。 In order to enable your review committee to have a better understanding and recognition of the characteristics and characteristics of this creation, the following preferred examples are listed below with reference to the following: Please refer to the third to eighth figure, the semicircular drill bit of this creation (2) The utility model mainly comprises: a handle body (301), a drill body (302), a drill point (303), a chip breaking step (304) and a step edge (307).
該柄身(301)與該鑽身(302)以及該斷屑台階(304)皆為同一中心軸(C)之結構。 The handle body (301) and the drill body (302) and the chip breaking step (304) are all of the same central axis (C) structure.
請參閱第三至五圖,該斷屑台階(304)設置在該鑽身(302)頂部並沿著中心軸(C)朝遠離該鑽身(302)的方向延伸一距離(形成一具有支撐的導柱),該斷屑台階(304)的直徑小於該階梯刃(307)之直徑,該鑽尖(303)係由該斷屑台階(304)延伸出的兩鑽刃(401、402)所構成。 Referring to Figures 3 to 5, the chip breaking step (304) is disposed on the top of the drill body (302) and extends along the central axis (C) away from the drill body (302) by a distance (forming a support) Guide post), the diameter of the chip breaking step (304) is smaller than the diameter of the stepped edge (307), and the drill tip (303) is a two-drilled edge (401, 402) extending from the chip breaking step (304) Composition.
請參閱第三至七圖,該鑽身(302)與該斷屑台階(304)呈半圓形的單刃結構,該鑽尖(303)設置在中心軸(C)的一側(換言之即是偏心的結構),該鑽尖(303)係該斷屑台階(304)延伸出的鑽刃(401、402)的最高點,由該鑽身(302)的剖面為界能定義出一第一邊(305)、一第二邊(306),從該第一邊(305)一側該鑽尖(303)朝著鑽刃(401)方向傾斜形成一第一中心切刃角(A1-1)[參閱第四圖,鑽刃(401)與X方向之夾角],該鑽身(302)與該斷屑台階(304)形成一螺旋狀的階梯刃,該階梯刃(307)具有階梯切削角(A2)[參閱第五圖,階梯刃(307)與Y方向之夾角],從該第二邊(306)一側該鑽尖朝著鑽刃(402)方向傾斜形成一第二中心切刃角(A1-2)[參閱第四圖,鑽刃(402)與Y方向之夾角],並且該鑽身(302)與該鑽尖(303)的同一側設置一鑽身逃隙後角(A5)。若孔徑較大時,該斷屑台階(304)亦可設有一與該鑽身逃隙後角(A5)平行的斷屑台階逃隙溝槽(圖未表示)。 Referring to Figures 3 to 7, the drill body (302) and the chip breaking step (304) have a semi-circular single-blade structure, and the drill point (303) is disposed on one side of the central axis (C) (in other words, Is an eccentric structure), the drill point (303) is the highest point of the cutting edge (401, 402) from which the chip breaking step (304) extends, and a section defined by the section of the drilling body (302) defines a One side (305) and a second side (306), the drill point (303) is inclined from the side of the first side (305) toward the cutting edge (401) to form a first central cutting edge angle (A1- 1) [Refer to the fourth figure, the angle between the cutting edge (401) and the X direction], the drill body (302) and the chip breaking step (304) form a spiral stepped edge, the stepped edge (307) has a step Cutting angle (A2) [refer to the fifth figure, the angle between the stepped edge (307) and the Y direction], from the side of the second side (306), the drill tip is inclined toward the cutting edge (402) to form a second center Cutting edge angle (A1-2) [refer to the fourth figure, the angle between the cutting edge (402) and the Y direction], and the drill body (302) and the same side of the drill point (303) are provided with a drill body after the escape Angle (A5). If the aperture is large, the chip breaking step (304) may also be provided with a chip breaking step escape groove (not shown) parallel to the rear corner of the drill body (A5).
請參閱第三至五圖,進一步定義本創作各個刃部的特點:首先,該鑽尖(303)係由一中心切刃(401)[即是第四圖具有傾 斜平的切刃處]與一從鑽尖(303)朝右下方傾斜弧狀的鑽刃(402)所構成的結構,其可對加工物透過中心切刃(401)、鑽刃(402)切削;該斷屑台階具有一定距離的導柱(403)與在該導柱(403)側邊的台階切刃(404)所構成的結構;該階梯刃(307)則是由該台階切刃(404)與鑽身切刃(405)所構成的切削刃部。 Please refer to Figures 3 to 5 to further define the characteristics of each blade of the creation: first, the drill tip (303) is composed of a central cutting edge (401) [ie, the fourth figure has a tilt a flattened cutting edge] and a structure of a curved cutting edge (402) inclined downward from the drill tip (303) to the lower right, which can pass the center cutting edge (401) and the cutting edge (402) Cutting; the chip breaking step has a structure of a guide post (403) at a certain distance and a step cutting edge (404) on a side of the guide post (403); the stepped edge (307) is cut by the step (404) A cutting edge portion formed by the drill cutting edge (405).
透過上述的結構,本創作可獲得的優點簡述如下:如第八圖所示,該鑽尖(303)、該斷屑台階(304)在高速轉動切削材料且同時形成隱形轉動支撐頂心,將切削時產生的軸向阻力化成多個分力,本創作的鑽尖(303)不在中心,因此中心靜點達到最小化、軸向阻力小,每一個刃部在轉動下阻力小自然可增加切削的進給率提高工作效率同時保持著孔徑精度且穩定性高。 Through the above structure, the advantages obtainable by the present creation are briefly described as follows: As shown in the eighth figure, the drill tip (303) and the chip breaking step (304) rotate the cutting material at a high speed and simultaneously form the invisible rotating support center. The axial resistance generated during cutting is converted into a plurality of component forces, and the drill tip (303) of the present invention is not centered, so the center static point is minimized, the axial resistance is small, and the resistance of each blade portion under rotation is naturally increased. The feed rate of the cutting increases the working efficiency while maintaining the aperture accuracy and high stability.
請參閱第八圖,在實際作業時該鑽尖(303)與斷屑台階(304)先切削出較小孔徑,接續由該階梯刃(307)對孔加工切削大於該斷屑台階(304)的孔徑具有節能的功效;又,該鑽尖(303)與該斷屑台階(304)為偏心的設計,在切削作業中形成隱藏式頂心能保持左右的平衡(即是切削保持動平衡),且強化鑽尖(303)的剛性,提高孔徑精度且鑽頭的穩定性高。 Referring to the eighth figure, in the actual operation, the drill tip (303) and the chip breaking step (304) first cut out a smaller aperture, and then the step cutting edge (307) is used to cut the hole larger than the chip breaking step (304). The aperture has an energy-saving effect; in addition, the drill tip (303) and the chip breaking step (304) are eccentrically designed to form a hidden top center during the cutting operation to maintain a balance between left and right (ie, cutting to maintain dynamic balance) And the rigidity of the drill tip (303) is strengthened, the aperture precision is improved, and the stability of the drill bit is high.
請參閱第四至七圖(特別是第六圖C處的局部放大圖),該鑽身(302)具有該鑽身逃隙後角(A5)一側可選擇性的研磨出一鑽身切刃寬(H),其可保持著該鑽身(302)在孔加工時切刃強度增加鑽身(302)的使用壽命,可依據切削的材料特性有不同的鑽身切刃寬(H)。 Please refer to the fourth to seventh figures (especially the partial enlarged view at the sixth figure C), the drill body (302) having the side of the drilled back clearance angle (A5) for selectively grinding a drill body The blade width (H) can maintain the life of the drill body (302) during the hole processing to increase the service life of the drill body (302), and the width of the drill body can be different depending on the material properties of the cutting (H) .
請參閱第三至七圖,從第一邊(305)觀視時,該鑽身具有鑽身倒錐度(A4),且鑽身(302)延伸部位徑向縮小,其優點在於在轉動所產生的摩擦阻力、微細切屑的摩擦阻力可大幅降低,並會得優異的孔加工精度穩定特性,與習用技術鑽身為等徑結構相較下,習用結構鑽身與孔接觸面過大,產生的摩擦阻力過大,導致加工的孔尺寸、表面精度不穩定。在部分實施方式中,該斷屑台階(304)亦可具有鑽身倒錐度(A4)之特徵結構。 Referring to Figures 3 to 7, when viewed from the first side (305), the drill body has a drill taper (A4), and the extension of the drill body (302) is radially reduced, which has the advantage that it is generated by rotation. The frictional resistance and the frictional resistance of the fine chips can be greatly reduced, and the excellent hole processing precision and stability characteristics can be obtained. Compared with the conventional technology, the drilled body and the hole contact surface are too large, and the friction generated is relatively large. Excessive resistance results in unstable hole size and surface accuracy. In some embodiments, the chip breaking step (304) may also have the feature of a drill taper (A4).
如第七圖所示,該鑽身逃隙後角(A5)連接有一支撐圓周面(308),該支撐圓周面(308)上可選擇性的設置至少一個以上的逃隙溝槽(A5-2),藉由鑽身逃隙後角(A5)與逃隙溝槽(A5-2)的設置可減少支撐圓周面(308)與工件的接觸面積,進一步降低摩擦阻力、細微切屑之摩擦阻力以及提高孔表面精度。在第七圖中,可以等分的設置逃隙後角(A5-2),亦可如第四、六圖只有一個逃隙後角(A5-2),其中,該逃隙後角(A5-2)除了第七圖為平面的結構,亦可如第六圖所示,該逃隙後角(A5-2)為圓弧狀的凹槽結構,進一步的該逃隙溝槽(A5-2)在轉動時也能將微細切屑排入溝槽內,降低細屑與孔徑磨擦發生之可能,藉以提高孔表面精度與鑽頭壽命。 As shown in the seventh figure, the drill back escape angle (A5) is connected with a support circumferential surface (308), and at least one escape groove can be selectively disposed on the support circumferential surface (308) (A5- 2), by the setting of the back angle of the drill body (A5) and the escape groove (A5-2), the contact area between the support circumferential surface (308) and the workpiece can be reduced, and the frictional resistance and the frictional resistance of the fine chip are further reduced. And improve the surface accuracy of the hole. In the seventh figure, the relief back angle (A5-2) can be equally divided, or there can be only one escape back angle (A5-2) as in the fourth and sixth figures, wherein the escape back angle (A5) -2) In addition to the seventh figure being a planar structure, as shown in the sixth figure, the back clearance angle (A5-2) is an arc-shaped groove structure, and further the escape groove (A5- 2) Micro-chips can also be discharged into the grooves during rotation to reduce the possibility of fines and aperture friction, thereby improving the surface accuracy of the holes and the life of the drill.
請參閱第八圖,本創作在轉動時,該鑽尖(303)與該斷屑台階(304)、階梯刃(307)恰形成多個斷屑點(即是虛線表示位置),每當切屑經過斷屑點即斷屑,使得切屑細小化,可降低切削阻力與鑽孔阻力最小化的優勢,切削所產生細小化的切屑快速的排出孔中,減少切屑持續在孔內摩擦,並提高孔表面精度。 Referring to the eighth figure, when the creation is rotated, the drill point (303) and the chip breaking step (304) and the step edge (307) form a plurality of chip breaking points (ie, the dotted line indicates the position), whenever the chip is cut. After chip breaking point, chip breaking, the chip is reduced, which can reduce the advantage of cutting resistance and drilling resistance minimization. The fine chips generated by the cutting are quickly discharged into the hole, reducing the friction of the chip in the hole and increasing the hole. Surface accuracy.
本創作可以選用如第三至八圖所示的半圓直刃結構外,該鑽身(302)亦可實施呈螺旋刃之造形,該螺旋處即形成排屑溝,能應用在具有延展性高之材質以及深孔加工。 The creation can use a semi-circular straight edge structure as shown in the third to eighth figures. The drill body (302) can also be formed into a spiral blade shape, which forms a chip ditch and can be applied to have high ductility. Material and deep hole processing.
透過上述說明,本創作具有下列之優點:當要切削大孔徑、深孔加工時,將切削時該鑽身(302)、鑽尖(303)、斷屑台階(304)、階梯刃(307)產生的軸向阻力化成多個分力,本創作的軸向阻力小、中心靜點最小化,自然可增加切削的進給率提高工作效率同時保持著孔徑精度且穩定性高。且當本創作運用上述所有的技術特徵,鑽身倒錐度(A4)更能減少鑽身(302)與孔之間的摩擦阻力,同時鑽身逃隙後角(A5)以及至少一個以上的逃隙溝槽(A5-2)也能減少鑽身(302)與孔的接觸面積,同時輔助排屑,提高孔精度,進一步提升產業升級。 Through the above description, the creation has the following advantages: when cutting a large aperture, deep hole machining, the drill body (302), the drill tip (303), the chip breaking step (304), the step edge (307) when cutting. The generated axial resistance is transformed into a plurality of component forces, and the axial resistance of the creation is small, and the central static point is minimized, which naturally increases the feed rate of the cutting to improve the working efficiency while maintaining the aperture precision and high stability. And when this creation uses all of the above technical features, the drill taper (A4) can reduce the frictional resistance between the drill body (302) and the hole, while the drill back escape angle (A5) and at least one escape. The gap groove (A5-2) can also reduce the contact area between the drill body (302) and the hole, and at the same time assist the chip removal, improve the hole precision, and further enhance the industrial upgrade.
綜上所述,本創作構成結構均未曾見於諸書刊或公開使用,誠符合發明專利申請要件,懇請 鈞局明鑑,早日准予專利,至為感禱。 In summary, the composition of this creation has not been seen in the publications or public use, and it is in line with the requirements of the invention patent application, so please ask the Bureau to express the patent, and grant the patent as soon as possible.
需陳明者,以上所述乃是本創作之具體實施立即所運用之技術原理,若依本創作之構想所作之改變,其所產生之功能仍未超出說明書及圖式所涵蓋之精神時,均應在本創作之範圍內,合予陳明。 For those who need to be identified, the above is the technical principle that is applied immediately by the specific implementation of this creation. If the changes made according to the concept of this creation have not yet exceeded the spirit of the manual and the schema, All should be included in the scope of this creation, combined with Chen Ming.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW106217141U TWM559221U (en) | 2017-11-17 | 2017-11-17 | Semicircular drill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW106217141U TWM559221U (en) | 2017-11-17 | 2017-11-17 | Semicircular drill |
Publications (1)
Publication Number | Publication Date |
---|---|
TWM559221U true TWM559221U (en) | 2018-05-01 |
Family
ID=62949819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW106217141U TWM559221U (en) | 2017-11-17 | 2017-11-17 | Semicircular drill |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWM559221U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI642502B (en) * | 2017-11-17 | 2018-12-01 | 有晙精密工具有限公司 | Semi-circular drill bit (2) |
-
2017
- 2017-11-17 TW TW106217141U patent/TWM559221U/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI642502B (en) * | 2017-11-17 | 2018-12-01 | 有晙精密工具有限公司 | Semi-circular drill bit (2) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7034067B2 (en) | Turning inserts and methods | |
JPWO2005102572A1 (en) | Ball end mill | |
JP2012511438A (en) | Small drill and method for manufacturing small drill | |
JP6359419B2 (en) | drill | |
JP2011020255A (en) | Drill with coolant holes | |
US6602029B1 (en) | Cutting tool and method and apparatus for making the same | |
JP2014166660A (en) | Drilling machine | |
CN109843484A (en) | Turning insert | |
TWI642502B (en) | Semi-circular drill bit (2) | |
JP2015062978A (en) | Ball end mill | |
CN207655965U (en) | Woodruff drill | |
TWM559221U (en) | Semicircular drill | |
JPWO2019244361A1 (en) | Tapered end mill | |
JP2018176360A (en) | Rotary cutting type drilling tool | |
CN105772818A (en) | Aluminum material milling cutter | |
CN2774682Y (en) | Multifunctional milling cutter | |
CN205519843U (en) | Aluminum product milling cutter | |
JP2010162643A (en) | Drill and grinding method of the drill | |
CN108176896A (en) | For the burnishing-in reamer of high-accuracy deep hole machining | |
TWI642501B (en) | Semicircular drill bit (1) | |
CN207655966U (en) | Woodruff drill | |
CN207873285U (en) | A kind of burnishing-in reamer for high-accuracy deep hole machining | |
JP2000233311A (en) | Ball end mill for finishing | |
CN109807372A (en) | Woodruff drill | |
CN217253134U (en) | Single-edge straight flute slotting cutter |