CN201432138Y - Integral gradient core diameter ball end mill - Google Patents
Integral gradient core diameter ball end mill Download PDFInfo
- Publication number
- CN201432138Y CN201432138Y CN 200920124220 CN200920124220U CN201432138Y CN 201432138 Y CN201432138 Y CN 201432138Y CN 200920124220 CN200920124220 CN 200920124220 CN 200920124220 U CN200920124220 U CN 200920124220U CN 201432138 Y CN201432138 Y CN 201432138Y
- Authority
- CN
- China
- Prior art keywords
- sword
- core body
- end mill
- ball
- cutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/52—Magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/08—Side or plan views of cutting edges
- B23B2251/082—Curved cutting edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges
Abstract
The utility model relates to an integral gradient core diameter ball end mill which comprises a core body, an S-shaped ball edge, a ball edge front cutter surface, a spiral peripheral edge and a peripheral edge front cutter surface connected with a cutter handle, the ball end mill is characterized in that the front end surface of the S-shaped ball edge is planar structure, the core body is a conical gradient diameter core body, and the conical angle of the conical core body is 1 degree-3 degrees; the S-shaped ball edge front cutter surface, the spiral peripheral edge front cutter surface and the core body form a large arc transition structure at the bottom of a chip pocket; the radian of the circular arc of the spiral peripheral edge increases from the axis to the exterior; the S-shaped ball edge and the back cutter surface of the spiral peripheral edge are provided with a edge band with a small back angle. The integral gradient core diameter ball end mill can improve the cutter strength and the deformation resistance of the operating part during the high speed machining work, improves the service life of cutter, realizes smooth cutting process and chip discharge, and particularlyimproves the safety of magnesium alloy during the machine part machining process.
Description
Technical field
The utility model relates to a kind of machining tool field, specifically is a kind of monoblock type gradual change core diameter ball end mill.
Background technology
The monoblock type ball end mill is the cutter commonly used of High-speed Computer number control machining center, and especially cutting etc. in the operation at complex-curved processing and milling, thorax is first-selected cutter, and the different processing object of design consideration of its matrix material and cutting edge has different requirements.Common monoblock type ball end mill design generally is the cylindrical bar shape profile, handle of a knife is divided into two kinds of staight shank and taper shanks, the processing part cylindrical bar shape, all sword core diameters are 1/2D+1, tooth depth is that (D is a milling cutter diameter in (D-2/3D+r)/2, r is the root radius value), this structure cutter is when carrying out Milling Process to whole thin-walled parts, the cutter blade fractures easily, under identical processing capacity, can increase the usage quantity of cutter, all sword helical angles are generally 30 °, the end is a S shape ball sword, cutting edge (Zhou Ren and ball sword) rake face is that fixedly the circular arc of radian is connected with core body, but the rake face of Zhou Ren and ball sword is discontinuous in the junction, causes the cutter hub vibrations in high speed machine processing easily.
Magnesium alloy is one of best structural material of machinability, the cutting impedance little, the cutting force of magnesium only be steel 1/7, aluminium 1/2.The cutting force of high-speed cutting magnesium alloy mainly is subjected to the influence of anterior angle, and the anterior angle of lathe tool is reduced to 15 ° by 25 °, and cutting force will improve 50%.Relief angle is less to the influence of cutting force, but big relief angle has the bigger space of walking to consider to be worth doing, makes the chip pocket chip removal smooth and easy.Simultaneously less blade number is avoided too much heat accumulation to reduce the friction between cutter and the workpiece machined surface.In addition, the cutting speed of magnesium alloy can be subjected to the influence of main shaft vibrations and ball sword radial load up to 7500m/min, has the vibration problem of ball end mill, when serious knife edge part is fractureed.After the adjusting process parameter, increase cutter life to some extent, but effect is little, therefore will increase axial strength in design, reduces the radial load influence.When processing magnesium alloy, because the ignition temperature of magnesium is 428 ℃, surface quality is influenced greatly by cutting temperature especially, and the smear metal of high-speed cutting magnesium alloy can be taken away a large amount of heat, therefore will strengthen chip pocket in the design, chip removal fast.
The Chinese utility model patent of having authorized " the rake face moulding of ball end mill ", application number: 200820300333.6, applicant: the He Lin of Guizhou University etc., this patent cutter front end face is shaped as sphere, be unfavorable for improving the surface smoothness of part to be processed, this is an one; It two is that the core diameter of cutter is constant, is unfavorable for chip removal, and particularly when the processing magnesium alloy part, because magnesium alloy easily produces spontaneous combustion, chip removal is not smooth, cuts not steadily, has both influenced cutter life, can cause the insecurity of process again.
Summary of the invention
Goal of the invention of the present utility model be to overcome the defective of prior art and provide a kind of working angles steadily, chip removal monoblock type gradual change smoothly core diameter ball end mill, thereby improve the service life of cutter and the security of magnesium alloy process.
Goal of the invention of the present utility model is achieved through the following technical solutions: a kind of monoblock type gradual change core diameter ball end mill, it comprises core body, S shape ball sword, ball sword rake face, helical circumferential sword and all sword rake faces that connects handle of a knife, it is characterized in that the front end face of described S shape ball sword is a planar structure; Described core body is the reducing core body of taper.
The cone angle of the reducing core body of described taper is 1 °～3 °.
Described S shape ball sword rake face and helical circumferential sword rake face and reducing core body have the orthodrome transition structure at the bottom of chip pocket.
Described helical circumferential sword circular arc radian outwards changes from small to big from the axle center.
The land that the back knife face of described S shape ball sword and helical circumferential sword has little relief angle.
Compared with prior art, the utility model is owing to the reducing core body of the gradual change core diameter of transverse plane with S shape ball sword and taper, in high speed machine processing, can improve operate portions cutter hub intensity and non-deformability, prolong the service life of cutter, working angles is steady, chip removal is smooth and easy, improves the especially security of magnesium alloy processing of parts process.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the camber line feature stereogram of S shape ball sword.
Fig. 3 is the slotting cutter drawing in side sectional elevation.
Fig. 4 is a helical circumferential sword drawing in side sectional elevation.
Fig. 5 is S shape ball sword and helical circumferential sword rake face structural representation.
The specific embodiment
Below in conjunction with above-mentioned accompanying drawing the utility model embodiment is described in detail again.
Monoblock type gradual change core diameter ball end mill, as Fig. 1～shown in Figure 5, with the carbide alloy is the whole cylinder clavate structure of matrix, staight shank handle of a knife 5, all-in-one-piece bulb, S shape ball sword rake face 3, its anterior angle is 15 °, and the reducing core body 6 of taper, the cone angle of core body are 1 °～3 °, in the high speed machine processing of Mg alloy thin wall part, can improve operate portions cutter hub intensity and resistance type ability, prolong cutter life; The front end face of S shape ball sword 2 is a planar structure 1, helical circumferential sword 7 and all sword rake faces 4, and its anterior angle is 8 °, helps reducing cutting force and rapidly heat radiation, all sword helical angles are θ=25 °, are convenient to smooth and easy chip removal; S shape ball sword rake face 3 and helical circumferential sword rake face 4 have the orthodrome transition structure with reducing core body 6 at the bottom of chip pocket; Helical circumferential sword 7 partial arc radians outwards change from small to big from the axle center, and the bulb part is connected with the cylinder interface portion is smooth at bulb with the circumferential section circular curve, help damping and chip removal smoothly; The land that the back knife face of S shape ball sword 2 and helical circumferential sword 7 has little relief angle has the smoothing cushioning effect.This ball end mill structure guarantees can reduce the cutter hub vibrations effectively and fracture in high speed machine processing, fast cooling, thus prolong service life of cutter, be particularly suitable for the High-speed machining of magnesium alloy parts.
Claims (5)
1, a kind of monoblock type gradual change core diameter ball end mill, it comprises core body, S shape ball sword (2), ball sword rake face (3), helical circumferential sword (7) and all sword rake faces (4) that connects handle of a knife (5), and the front end face that it is characterized in that described S shape ball sword (2) is planar structure (1); Described core body is the reducing core body (6) of taper.
2, monoblock type gradual change core diameter ball end mill according to claim 1, the cone angle that it is characterized in that the reducing core body (6) of described taper is 1 °～3 °.
3, monoblock type gradual change core diameter ball end mill according to claim 1 is characterized in that described S shape ball sword rake face (3) and helical circumferential sword rake face (4) and reducing core body (6) have the orthodrome transition structure at the bottom of chip pocket.
4, monoblock type gradual change core diameter ball end mill according to claim 1 is characterized in that described helical circumferential sword (7) circular arc radian outwards changes from small to big from the axle center.
5,, it is characterized in that the land that the back knife face of described S shape ball sword (2) and helical circumferential sword (7) has little relief angle according to each described monoblock type gradual change core diameter ball end mill of claim 1～4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920124220 CN201432138Y (en) | 2009-07-07 | 2009-07-07 | Integral gradient core diameter ball end mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920124220 CN201432138Y (en) | 2009-07-07 | 2009-07-07 | Integral gradient core diameter ball end mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201432138Y true CN201432138Y (en) | 2010-03-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920124220 Expired - Fee Related CN201432138Y (en) | 2009-07-07 | 2009-07-07 | Integral gradient core diameter ball end mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201432138Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059387A (en) * | 2010-11-24 | 2011-05-18 | 山东大学 | Knife edge-variable arc semidiameter micro-diameter milling cutter for restraining generation of burrs and manufacture method thereof |
| CN104959667A (en) * | 2015-05-12 | 2015-10-07 | 哈尔滨理工大学 | Milling cutter provided with equidistant arc head on eccentric shape flank surface and grinding method |
| CN110842267A (en) * | 2019-10-16 | 2020-02-28 | 江苏科技大学 | Tapered four-edge milling cutter with variable core diameter and variable tooth pitch |
| CN114147271A (en) * | 2021-12-13 | 2022-03-08 | 山东大学 | Ceramic milling cutter with multi-section arc edges |
| CN114161080A (en) * | 2021-06-11 | 2022-03-11 | 贵州永红航空机械有限责任公司 | Machining method for thin-wall special-shaped pipe body parts |
-
2009
- 2009-07-07 CN CN 200920124220 patent/CN201432138Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059387A (en) * | 2010-11-24 | 2011-05-18 | 山东大学 | Knife edge-variable arc semidiameter micro-diameter milling cutter for restraining generation of burrs and manufacture method thereof |
| CN102059387B (en) * | 2010-11-24 | 2012-07-25 | 山东大学 | Knife edge-variable arc semidiameter micro-diameter milling cutter for restraining generation of burrs and manufacture method thereof |
| CN104959667A (en) * | 2015-05-12 | 2015-10-07 | 哈尔滨理工大学 | Milling cutter provided with equidistant arc head on eccentric shape flank surface and grinding method |
| CN104959667B (en) * | 2015-05-12 | 2018-03-23 | 哈尔滨理工大学 | Knife face band Unequal distance arc head milling cutter and method for grinding after a kind of eccentric shape |
| CN110842267A (en) * | 2019-10-16 | 2020-02-28 | 江苏科技大学 | Tapered four-edge milling cutter with variable core diameter and variable tooth pitch |
| WO2021073023A1 (en) * | 2019-10-16 | 2021-04-22 | 江苏科技大学 | Core-diameter-variable and tooth-pitch-variable tapered four-edge milling cutter |
| CN114161080A (en) * | 2021-06-11 | 2022-03-11 | 贵州永红航空机械有限责任公司 | Machining method for thin-wall special-shaped pipe body parts |
| CN114147271A (en) * | 2021-12-13 | 2022-03-08 | 山东大学 | Ceramic milling cutter with multi-section arc edges |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20160707 |