CN2650916Y - Bulb milling cutter - Google Patents
Bulb milling cutter Download PDFInfo
- Publication number
- CN2650916Y CN2650916Y CN 200320114212 CN200320114212U CN2650916Y CN 2650916 Y CN2650916 Y CN 2650916Y CN 200320114212 CN200320114212 CN 200320114212 CN 200320114212 U CN200320114212 U CN 200320114212U CN 2650916 Y CN2650916 Y CN 2650916Y
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- Prior art keywords
- blade
- hole
- cutter hub
- cutting blade
- pinching screw
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- Expired - Lifetime
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Abstract
The utility model provides a spherical end milling cutter with simple structure, reliable positioning and low cost. The utility model, which comprises a cutter body, a cutting blade and a clamping bolt, is characterized in that: the cutting blade inserts into a groove in the cutter body; the bolt passes through a hole at the upper half of the cutter body and the hole of the cutting blade and finally is screwed into an internal thread section at the lower half of the cutter body, so as to connect the cutting blade and the cutter body into a whole; the taper angle for the fillet of a taper hole at the upper half of the cutter body and the through hole of the cutting blade identifies with each other; during the clamping, the fillet taper surface for the through hole of the cutting blade and the taper surface of the clamping bolt are closely adhered to each other, so that the internal surface at the upper and lower half of the cutter body respectively clamps the main and rear main surface of the cutting blade and the cutting blade is clamped closely on the cutter body; a front surface convex section and a rear surface convex section that cross in space are arranged in the cutting blade, which coordinate with a V-shape position limiting area of the cutter body to prevent the accurate positioning and rotation in processing of the cutting blade; four cutting edges at the front and rear section, which are separated by the front and rear surface convex sections, are able to enhance the utilization efficiency of the cutting blade and reduce the consumption.
Description
Technical field
The utility model relates to a kind of milling cutter with ball shaped end, and especially indexable formula milling cutter with ball shaped end, this milling cutter are used at a high speed, high accuracy is processed spherical groove and similar surfaces.
Background technology
At a high speed, during high accuracy processing spherical groove, remove traditional monoblock type milling cutter with ball shaped end, indexable milling cutter with ball shaped end also is extensive use of gradually.This milling cutter with ball shaped end has been installed a kind of indexable insert tip, throw away tip, and this blade has the cutting edge of making on indexable insert tip, throw away tip, and blade inserts in the groove of cutter hub, and the clamping force by pinching screw makes groove closed and it is installed on the cutter hub.This milling cutter be convenient to frequently reface cutting edge and change blade is increased work efficiency, and reduces the cost of changing the monoblock type milling cutter with ball shaped end.
Chinese patent 99118835.7 discloses a kind of milling cutter with ball shaped end, has a plate shape blade, and the through hole of blade is provided with conus portion, and its diameter enlarges to half direction; Taper spring is inserted in the hole of half one, and the circular cone packing ring that is installed in the through hole is arranged on below the taper spring; This taper spring has the conical surface corresponding to through hole.By means of the restoring force of taper spring and second half one, the circular cone packing ring is pressed to the lower surface of groove with plate shape blade, and the frictional force between the external thread part of pinching screw and the internal thread part of second half one is kept, and reaches the purpose of clamping.
The positioning accuracy of taper spring and insert through hole conus portion is difficult to control the precision of the whole clamping device of influence in this patent, and complex structure, clamping are not easy, and the contact area of the projection of blade and cutter hub is not enough, when cutting force was big, blade may be subjected to displacement influenced machining accuracy; Every is had only a cutting edge before and after the simultaneously described blade, and economy is relatively poor.
The utility model content
The utility model is at above-mentioned deficiency, and a kind of simple in structure, the location is reliable, cost is low milling cutter with ball shaped end is provided, and the every mask of blade has two cutting edges, improves the blade utilization ratio, reduces consuming.
Milling cutter with ball shaped end of the present utility model comprises cutter hub, blade and pinching screw; The cutter hub leading section has a first half and a Lower Half of being separated by groove, and the first half has a through hole, and Lower Half has the internal thread part that cooperates with the external screw thread of pinching screw, and through hole is coaxial with internal thread part; Blade has the through hole that runs through preceding first type surface and rear major face; Blade inserts in the groove of cutter hub, and screw passes the hole of the cutter hub first half and the hole of blade, is screwed in the internal thread part of Lower Half of cutter hub, and blade and cutter hub are connected as a single entity; Pinching screw is a conical surface pinching screw; The hole of the first half of cutter hub is the taper hole with the identical tapering of the conical surface of pinching screw, and the big end of taper hole is towards the head of pinching screw, in order to hold the head of pinching screw; The through hole of blade is chamfering taper hole with the identical tapering of the conical surface of described pinching screw near the part of preceding first type surface and rear major face, and the big end of taper hole is respectively towards first type surface and rear major face; When pinching screw passes the hole of the cutter hub first half and the hole of blade, when being screwed into the internal thread part of Lower Half of cutter hub, the conical surface of the chamfering conical surface of the through hole of blade and pinching screw tightly pushed fit together, the inner surface that makes the inner surface of the first half of cutter hub and Lower Half is the first type surface and the rear major face of clamping blade respectively, and blade is clamped on the cutter hub.
The blade of the utility model milling cutter with ball shaped end has upper surface and lower surface, on upper surface and lower surface respectively design have comprise before first type surface front surface wedge shape projection with comprise rear major face rear surface wedge-shaped projection; Front surface wedge shape projection and rear surface wedge-shaped projection are on the plane perpendicular to the axis of the through hole of blade, and θ is space crossed setting at a certain angle; Upper surface has by separated forward and backward two cutting edges of front surface wedge shape projection; Lower surface has by separated forward and backward two cutting edges of front surface wedge shape projection.
The front surface wedge shape projection and the space crossed angle θ of rear surface wedge-shaped projection of the blade of the utility model milling cutter with ball shaped end are 60 °～120 °, and the best is 90 °.
The first half of the cutter hub of the utility model milling cutter with ball shaped end has contact-making surface on the blade in the direction design towards groove, and Lower Half has contact-making surface under the blade in the direction design towards groove; Contact-making surface is the plane of the expansion of tilting from the front end one side direction cutter hub rear end of the first half on the blade, cooperates with the inclined-plane of the front surface wedge shape projection of blade; Contact-making surface is the plane of the expansion of tilting from the front end one side direction cutter hub rear end of Lower Half under the blade, cooperates with the inclined-plane of the rear surface wedge shape projection of blade; On the blade under contact-making surface and the blade contact-making surface to form space crossed, an intersecting angle β be 60 °～120 ° V-arrangement spacing zone, and intersecting angle β is identical with the intersecting angle θ of forward and backward surperficial wedge shape projection, optimum value is 90 °.
The front surface wedge shape of the blade of the utility model milling cutter with ball shaped end projection and rear surface wedge shape projection respectively with the rising height H of upper and lower surface
1Be blade thickness H 1/3～2/3, optimum value is 1/2.
Two cutting edges of the upper surface of the blade of the utility model milling cutter with ball shaped end and the side, two cutting edge places of lower surface respectively with upper and lower surface at an angle, angle [alpha] is 10 °～35 °, optimum value is 20 °.
Because the utility model adopts the blade center's Hole chamfering conical surface with the identical tapering of conehead holding screw, make both coaxial all the time in clamping process, simultaneously the V-arrangement spacing zone of the upper and lower blade contact-making surface formation in the space crossed forward and backward wedge shape projection of blade and the cutter hub groove contacts applying, form the pre-determined bit of blade on the one hand, can prevent the rotation of blade on the other hand, even cutting force is bigger.Of the present utility model simple in structure, the location is reliable, has reduced processing cost; And the blade upper and lower surface has two cutting edges respectively, and blade life is doubled, and reduces blade consumption, saves processing cost, and economic benefit improves greatly.
Description of drawings
Fig. 1 is a schematic perspective view of the present utility model;
Fig. 2 is the main cutaway view of Fig. 1;
Fig. 3 is the schematic perspective view of blade 5 of the present utility model;
Fig. 4 is the front view of Fig. 3;
Fig. 5 is that the D of Fig. 3 is to cutaway view;
Fig. 6 is the rearview of Fig. 3;
Fig. 7 is the front view of cutter hub 1 of the present utility model;
Fig. 8 is the vertical view of Fig. 7.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, milling cutter with ball shaped end of the present utility model comprises cutter hub 1, blade 5 and pinching screw 9; Cutter hub 1 leading section has a first half 2 and a Lower Half 3 of being separated by groove 4, and the first half 2 has a through hole 10, and Lower Half 3 has the internal thread part 11 that cooperates with the external screw thread of pinching screw 9, and through hole 10 is coaxial with internal thread part 11; Blade 5 has the through hole 6 that runs through preceding first type surface 7 and rear major face 8; Blade 5 inserts in the groove 4 of cutter hubs 1, and screw 9 passes the hole 10 of cutter hub 1 first half 3 and the hole 6 of blade 5, is screwed in the internal thread part 11 of Lower Half 3 of cutter hub 1, and blade 5 and cutter hub 1 are connected as a single entity.Pinching screw 9 is conical surface pinching screws; The hole 10 of the first half 2 of cutter hub 1 is the taper hole with the identical tapering of the conical surface of pinching screw 9, and the big end of taper hole is towards the head of pinching screw 9, in order to hold the head of pinching screw 9; The through hole 6 of blade 5 is chamfering taper hole with the identical tapering of the conical surface of pinching screw 9 near the part of preceding first type surface 7a and rear major face 8a, and the big end of taper hole is respectively towards first type surface 7 and rear major face 8; When pinching screw 9 passes the hole 10 of cutter hub 1 first half 3 and the hole 6 of blade 5, when being screwed into the internal thread part 11 of Lower Half 3 of cutter hub 1, the conical surface of the chamfering conical surface of the through hole 6 of blade 5 and pinching screw 9 tightly pushed fit together, the inner surface 13 that makes the inner surface 12 of the first half 2 of cutter hub 1 and Lower Half 3 is the first type surface 7 and the rear major face 8 of clamping blades 5 respectively, and blade 5 is clamped on the cutter hub 1.
Blade 5 has upper surface 20 and lower surface 21, on upper surface 20 and lower surface 21 respectively design have comprise before first type surface 7a front surface wedge shape projection 7 with comprise rear major face 8a rear surface wedge shape projection 8; See Fig. 3～6.Front surface wedge shape projection 7 and rear surface wedge shape projection 8 are on the plane perpendicular to the axis of the through hole 6 of blade 5, and θ is space crossed setting at a certain angle; Upper surface 20 has forward and backward two cutting edges 16,17, is separated by front surface wedge shape projection 7; Lower surface 21 has forward and backward two cutting edges 18,19, is separated by front surface wedge shape projection 8.Blade 5 upper and lower surfaces have two cutting edges respectively, and the life-span of blade 5 is doubled, and reduce blade consumption, save processing cost, and economic benefit improves greatly.
The space crossed angle θ of the forward and backward surperficial wedge shape projection 7,8 of blade is between 60 °～120 °, and the best is 90 °.
As shown in Figure 7, the first half 2 of cutter hub 1, Lower Half 3 are having on the blade contact-making surface 15 under contact-making surface 14, the blade towards design on the direction of groove 4 respectively; Contact-making surface 14 is the planes of expansion of tilting from front end one side direction cutter hub 1 rear end of a first half 2 on the blade, cooperates with the inclined-plane 7b of the front surface wedge shape projection 7 of blade 1; Contact-making surface 15 is the plane of the expansion of tilting from front end one side direction cutter hub 1 rear end of Lower Half 3 under the blade, cooperates with the inclined-plane 8b of the rear surface wedge shape projection 8 of blade 1; On the blade under contact-making surface 14 and the blade contact-making surface 15 to form space crossed a, angle beta be 60 °～120 ° V-arrangement spacing zone, and angle beta is identical with the intersecting angle θ of forward and backward surperficial wedge shape protruding 7 and 8, optimum value is 90 °.
Because the chamfering conical surface in blade center of the present utility model hole 6 has identical tapering with conehead holding screw 9, make both coaxial all the time in clamping process, simultaneously the V-arrangement spacing zone of upper and lower blade contact-making surface 14,15 formation in the groove 4 of the space crossed forward and backward wedge shape projection 7,8 of blade 5 and cutter hub 1 contacts applying, form the pre-determined bit of blade on the one hand, can prevent the rotation of blade on the other hand, even cutting force is bigger; Both guaranteed reliable location, simultaneously simple in structure.
The front surface wedge shape of blade 5 of the present utility model projection 7 and rear surface wedge shape projection (8) respectively with the rising height H of upper and lower surface
1Be blade 5 thickness H 1/3～2/3, optimum value is 1/2, as shown in Figure 4.
The side, cutting edge 18,19 place of cutting edge 16,17 on the upper surface 20 of blade 5 and lower surface 21 (promptly has certain relief angle) at an angle with upper and lower surface respectively, and scope is 10 °～35 °, and optimum value is 20 °.
Claims (7)
1, a kind of milling cutter with ball shaped end comprises: cutter hub (1), blade (5) and pinching screw (9); Described cutter hub (1) leading section has a first half (2) and a Lower Half (3) of being separated by groove (4), the described first half (2) has a through hole (10), described Lower Half (3) has the internal thread part (11) that cooperates with the external screw thread of pinching screw (9), and described through hole (10) is coaxial with described internal thread part (11); Described blade (5) has the through hole (6) that runs through preceding first type surface (7) and rear major face (8); Described blade (5) inserts in the groove (4) of described cutter hub (1), described screw (9) passes the hole (10) of cutter hub (1) first half (3) and the hole (6) of blade (5), be screwed in the internal thread part (11) of Lower Half (3) of described cutter hub (1), described blade (5) and cutter hub (1) are connected as a single entity, it is characterized in that: described pinching screw (9) is a conical surface pinching screw; The hole (10) of the first half (2) of described cutter hub (1) is the taper hole with the identical tapering of the conical surface of described pinching screw (9), and the big end of taper hole is towards the head of pinching screw (9), in order to hold the head of pinching screw (9); The through hole (6) of described blade (5) is chamfering taper hole with the identical tapering of the conical surface of described pinching screw (9) near the part of preceding first type surface (7a) and rear major face (8a), and the big end of taper hole is respectively towards preceding first type surface (7a) and rear major face (8a); When described pinching screw (9) passes the hole (10) of cutter hub (1) first half (3) and the hole (6) of blade (5), when being screwed into the internal thread part (11) of Lower Half (3) of described cutter hub (1), the conical surface of the chamfering conical surface of the through hole (6) of described blade (5) and pinching screw (9) tightly pushed fit together, make the inner surface (13) of the inner surface (12) of the first half (2) of described cutter hub (1) and Lower Half (3) clamp the first type surface (7) and the rear major face (8) of described blade (5) respectively, blade (5) is clamped on the cutter hub (1).
2, a kind of milling cutter with ball shaped end as claimed in claim 1, it is characterized in that: described blade (5) has upper surface (20) and lower surface (21), and design has the front surface wedge shape projection (7) that comprises preceding first type surface (7a) and comprises rear major face (8a) rear surface wedge-shaped projection (8) respectively on described upper surface (20) and lower surface (21); Described front surface wedge shape projection (7) and rear surface wedge-shaped projection (8) are on the plane perpendicular to the axis of the through hole (6) of described blade (5), and υ is space crossed setting at a certain angle; Described upper surface (20) has by separated forward and backward two cutting edges of described front surface wedge shape projection (7) (16), (17); Described lower surface (21) has by separated forward and backward two cutting edges of described front surface wedge shape projection (8) (18), (19).
3, milling cutter with ball shaped end as claimed in claim 2 is characterized in that: described angle Y is 60 °～120 °, and the best is 90 °.
4, as claim 2 or 3 described milling cutter with ball shaped end, it is characterized in that: the first half (2) of described cutter hub (1) has contact-making surface on the blade (14) in the direction design towards groove (4), and Lower Half (3) has contact-making surface under the blade (15) in the direction design towards groove (4); Contact-making surface on the described blade (14) is a plane that tilts to expand from front end one side direction cutter hub (1) rear end of the described first half (2), and described plane (14) cooperate with the inclined-plane (7b) of the front surface wedge shape projection (7) of described blade (1); Contact-making surface under the described blade (15) is a plane that tilts to expand from front end one side direction cutter hub (1) rear end of described Lower Half (3), and described plane (15) cooperate with the inclined-plane (8b) of the rear surface wedge shape projection (8) of described blade (1); To form space crossed, an intersecting angle β be 60 °～120 ° V-arrangement spacing zone to contact-making surface (15) under contact-making surface on the described blade (14) and the blade, and described intersecting angle β is identical with the intersecting angle υ of forward and backward surperficial wedge-shaped projection (7) and (8), and optimum value is 90 °.
5, as claim 2 or 3 described milling cutter with ball shaped end, it is characterized in that: the rising height of described blade (5) front surface wedge shape projection (7) and rear surface wedge-shaped projection (8) be described blade (5) thickness 1/3～2/3, optimum value is 1/2.
6, as claim 2 or 3 described milling cutter with ball shaped end, it is characterized in that: the cutting edge (18) of the cutting edge (16) of the upper surface (20) of described blade (5), (17) and lower surface (21), (19) side, place respectively with upper and lower surface (20), (21) at an angle, described angle [alpha] is 10 °～35 °, and optimum value is 20 °.
7, milling cutter with ball shaped end as claimed in claim 5, it is characterized in that: the cutting edge (18) of the cutting edge (16) of the upper surface (20) of described blade (5), (17) and lower surface (21), (19) side, place respectively with upper and lower surface (20), (21) at an angle, described angle [alpha] is 10 °～35 °, and optimum value is 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320114212 CN2650916Y (en) | 2003-11-26 | 2003-11-26 | Bulb milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320114212 CN2650916Y (en) | 2003-11-26 | 2003-11-26 | Bulb milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2650916Y true CN2650916Y (en) | 2004-10-27 |
Family
ID=34345278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320114212 Expired - Lifetime CN2650916Y (en) | 2003-11-26 | 2003-11-26 | Bulb milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2650916Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059820B (en) * | 2007-05-21 | 2010-04-14 | 宜昌船舶柴油机有限公司 | Design method for milling cutter for processing superlarge specification inner screw thread |
| CN101524771B (en) * | 2008-12-31 | 2010-12-29 | 长城汽车股份有限公司 | Ball end repairing cutter |
| CN102319915A (en) * | 2011-05-27 | 2012-01-18 | 上海小糸车灯有限公司 | Processing method for needle valve pouring gate of needle valve type hot runner mold |
| CN103415366A (en) * | 2011-03-03 | 2013-11-27 | 日立工具股份有限公司 | Edge replaceable ball end mill |
| CN103639502A (en) * | 2013-12-27 | 2014-03-19 | 哈尔滨理工大学 | Wide-line processing indexable bulb milling cutter for mould |
| CN103722227A (en) * | 2013-12-23 | 2014-04-16 | 哈尔滨理工大学 | Indexable ball end mill for molds |
| CN107914046A (en) * | 2017-11-15 | 2018-04-17 | 珠海市魅族科技有限公司 | The processing method and terminal of chamfering |
| CN110809501A (en) * | 2017-06-30 | 2020-02-18 | 佑能工具株式会社 | Ball end mill |
| CN110899800A (en) * | 2019-12-18 | 2020-03-24 | 株洲钻石切削刀具股份有限公司 | Single cutting blade replaceable type finish milling ball head cutter |
| CN113677467A (en) * | 2019-04-01 | 2021-11-19 | 京瓷株式会社 | End milling cutter |
-
2003
- 2003-11-26 CN CN 200320114212 patent/CN2650916Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101059820B (en) * | 2007-05-21 | 2010-04-14 | 宜昌船舶柴油机有限公司 | Design method for milling cutter for processing superlarge specification inner screw thread |
| CN101524771B (en) * | 2008-12-31 | 2010-12-29 | 长城汽车股份有限公司 | Ball end repairing cutter |
| CN103415366B (en) * | 2011-03-03 | 2015-10-14 | 三菱日立工具技术株式会社 | Edge replaceable ball end mill |
| CN103415366A (en) * | 2011-03-03 | 2013-11-27 | 日立工具股份有限公司 | Edge replaceable ball end mill |
| CN102319915A (en) * | 2011-05-27 | 2012-01-18 | 上海小糸车灯有限公司 | Processing method for needle valve pouring gate of needle valve type hot runner mold |
| CN103722227A (en) * | 2013-12-23 | 2014-04-16 | 哈尔滨理工大学 | Indexable ball end mill for molds |
| CN103722227B (en) * | 2013-12-23 | 2016-08-17 | 哈尔滨理工大学 | The indexable rose cutter of mould |
| CN103639502A (en) * | 2013-12-27 | 2014-03-19 | 哈尔滨理工大学 | Wide-line processing indexable bulb milling cutter for mould |
| CN103639502B (en) * | 2013-12-27 | 2016-08-17 | 哈尔滨理工大学 | The indexable rose cutter of mould wide-line processing |
| CN110809501A (en) * | 2017-06-30 | 2020-02-18 | 佑能工具株式会社 | Ball end mill |
| CN107914046A (en) * | 2017-11-15 | 2018-04-17 | 珠海市魅族科技有限公司 | The processing method and terminal of chamfering |
| CN113677467A (en) * | 2019-04-01 | 2021-11-19 | 京瓷株式会社 | End milling cutter |
| CN110899800A (en) * | 2019-12-18 | 2020-03-24 | 株洲钻石切削刀具股份有限公司 | Single cutting blade replaceable type finish milling ball head cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131126 Granted publication date: 20041027 |