CN203679896U - Knife handle with ultra-high accuracy - Google Patents

Knife handle with ultra-high accuracy Download PDF

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Publication number
CN203679896U
CN203679896U CN201420005320.1U CN201420005320U CN203679896U CN 203679896 U CN203679896 U CN 203679896U CN 201420005320 U CN201420005320 U CN 201420005320U CN 203679896 U CN203679896 U CN 203679896U
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China
Prior art keywords
handle
nut
knife
plane
collet
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Withdrawn - After Issue
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CN201420005320.1U
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Chinese (zh)
Inventor
陈文泉
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DONGGUAN KAILONG INDUSTRIAL Co Ltd
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DONGGUAN KAILONG INDUSTRIAL Co Ltd
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Abstract

The utility model discloses a knife handle with ultra-high accuracy. The knife handle comprises a knife handle body, a spring chuck and a nut; an annular groove is formed in the upper end of the spring chuck and provided with a pressed plane on the lower side, and the lower end of the spring chuck is of a 12-degree conical surface structure; a shaft core at the upper end of the knife handle body is provided with a 12-degree conical hole matched with the conical surface at the lower end of the spring chuck; a convex ring is provided on the inner side of the upper end of the nut and provided with a pressing plane on the lower side, and the pressing plane is matched with the pressed plane, so that the spring chuck is compressed downwards in a plane pressing mode; internal threads are arranged on the inner side of the nut, and external threads matched with the internal threads are arranged on the outer side of the upper end of the knife handle. The knife handle with ultra-high accuracy not only can ensure good clamping force and clamping stability and is not prone to being affected by deflecting force, shaking force and other external force and stable in concentricity, but also can ensure good machining accuracy.

Description

A kind of superhigh precision handle of a knife
Technical field
The present invention relates to handle of a knife, particularly a kind of CNC bore, on milling Digit Control Machine Tool for the superhigh precision handle of a knife of mounting cutter.
Background technology
At present, the application on CNC brill, milling Digit Control Machine Tool of BT handle of a knife, BBT handle of a knife and HSK handle of a knife is very extensive, and wherein, the assembling mode of BT handle of a knife is the single cone match assembling with fixed axoid angle, according to the size of BT handle of a knife, BT handle of a knife comprises the series such as BT20, BT30, BT40, BT50.BT handle of a knife is in the time coordinating with cutter, mainly contain two kinds of installation way standards: one, compress clamping cutter standard in conical surface mode, be ER mode, according to collet size, comprise the series such as ER8, ER11, ER16, ER20, ER25, ER32, ER40, ER50; Two, compress clamping cutter standard with planar fashion, i.e. SK mode, according to collet size, comprises the series such as SK6, SK10, SK16, SK20, SK25.
Fig. 1 is ER Knife handle structure figure, and in figure, the top of handle of a knife is divided into cutaway view.As shown in Figure 1, this ER handle of a knife 100 comprises handle of a knife body 110, collet 120 and nut 130; Described collet 120 upper ends are 60 ° of cone structures 121, and collet 120 lower ends are 16 ° of cone structures 122; Described handle of a knife body 110 upper shaft cores have 16 ° of taper holes 111, these 16 ° of taper holes 111 and collet 120 lower end cone match; Described nut 130 inner sides, upper end have 60 ° of taper holes 131, these 60 ° of taper holes 131 and collet 120 upper end cone match; Described nut 130 inner sides, lower end are provided with internal screw thread 132, and described handle of a knife body 110 outsides, upper end are provided with the external screw teeth 112 matching with internal screw thread 132.When clamping cutter (not shown cutter), first collet 120 lower ends are inserted in the taper hole 111 of handle of a knife body 110 upper ends, insert cutter, screw on again nut 130, now, nut 130 inner sides, upper end compress with 60 ° of conical surfaces with collet 120 upper ends, and collet 120 lower ends compress with 16 ° of cone match with handle of a knife body 111 upper shaft cores, and final collet 120 screws in by nut 130 and compresses, fixed cutting tool.
Fig. 2 is SK Knife handle structure figure, and in figure, the top of handle of a knife is divided into cutaway view.As shown in Figure 2, this SK handle of a knife 200 comprises handle of a knife body 210, collet 220 and nut 230; Described collet 220 upper ends have a cannelure 221, and these cannelure 221 downsides are established pressurized plane 2211; Described collet 220 lower ends are 8 ° of cone structures 222; Described handle of a knife body 210 upper shaft cores have 8 ° of taper holes 211, these 8 ° of taper holes 211 and collet 220 lower end cone match; Described nut 230 inner sides, upper end have a bulge loop 231, and these bulge loop 231 downsides are established and pressed plane 2311, and this is pressed plane 2311 and matches with described pressurized plane 2211, to compress down holddown spring chuck 220 of mode by plane; Described nut 230 inner sides, lower end are provided with internal screw thread 232, and described handle of a knife body 210 outsides, upper end are provided with the external screw teeth 212 matching with internal screw thread 232.When clamping cutter (not shown cutter), first collet 220 upper ends are fastened to nut 230 upper ends, then collet 220 lower ends are inserted in the taper hole 211 of handle of a knife body 210 upper ends, insert cutter, screw on again nut 230, now, the plane 2311 of pressing of nut bulge loop 231 compresses with plane the pressurized plane 2211 that mode is down pressed collet cannelure 221, collet 220 lower ends compress with 8 ° of cone match with handle of a knife body 210 upper shaft cores, and final collet 220 screws in by nut 230 and compresses, fixed cutting tool.
Above-mentioned ER handle of a knife and SK handle of a knife, in actual manufacture and application process, have following characteristics:
(1) handle of a knife body upper shaft core is cone match with coordinating of collet, and conical surface angle is less, and chucking power is higher, and cutter holding is more steady, thereby the chucking power of SK handle of a knife and clamping stability are better than ER handle of a knife;
(2) because the inner side, nut upper end of ER handle of a knife is to compress with 60 ° of conical surfaces with collet upper end, thereby ER handle of a knife is in holding cutter High Rotation Speed process, is easily subject to the external force impact such as biasing force, rolling power, and concentricity can be offset;
(3) due to the nut bulge loop of SK handle of a knife press plane be with plane compress mode down press collet cannelure pressurized plane, thereby SK handle of a knife is in holding cutter High Rotation Speed process, be not vulnerable to the external force impact such as biasing force, rolling power, concentricity is more stable;
(4) collet tapering is less, collet and handle of a knife body shaft core taper hole coordinate the conical surface longer (with reference to Fig. 1, Fig. 2), but, collet conical surface length and corresponding this body cone of handle of a knife length are longer, machining accuracy is more difficult to ensure card, therefore, the machining accuracy of ER handle of a knife is better than SK handle of a knife.
In the prior art, ER handle of a knife machining accuracy more easily ensures, but due to ER handle of a knife chucking power and clamping stability poor, and be vulnerable to biasing force, the external force such as power of shaking affect, concentricity can be offset, therefore, in current process conditions, ER handle of a knife, the combination precision of its handle of a knife and cutter: high-precision in combination precision 5 μ m, general precision between combination precision 5 μ m-10 μ m, and the ER handle of a knife that China's Mainland produces, the combination precision of its handle of a knife and cutter is comparatively unstable, generally only have 10% ER handle of a knife combination precision can be controlled in 5 μ m, and 30% ER handle of a knife combination precision can be between 5 μ m-10 μ m, the precision of 60% ER handle of a knife can be more than 10 μ m.
Hold, SK handle of a knife chucking power and clamping stability are better, and be not vulnerable to biasing force, the external force such as power of shaking affect, concentricity is more stable, but, because SK handle of a knife machining accuracy is difficult to ensure card, therefore, in current process conditions, SK handle of a knife, the combination precision of its handle of a knife and cutter: high-precision in combination precision 5 μ m, general precision between combination precision 5 μ m-10 μ m, and the SK handle of a knife that China's Mainland produces, the combination precision of its handle of a knife and cutter is comparatively unstable, generally only have 10% SK handle of a knife combination precision can be controlled in 5 μ m, and 30% SK handle of a knife combination precision can be between 5 μ m-10 μ m, the precision of 60% SK handle of a knife can be more than 10 μ m.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, provide one can ensure better chucking power and clamping stability, be not vulnerable to the external force impact such as biasing force, rolling power, stablize concentricity, can ensure again the superhigh precision handle of a knife of better machining accuracy.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of superhigh precision handle of a knife, comprises handle of a knife body, collet and nut; Described collet upper end has a cannelure, and this cannelure downside is established pressurized plane; Described collet lower end is 12 ° of cone structures; Described handle of a knife body upper shaft core has 12 ° of taper holes, these 12 ° of taper holes and collet lower end phase cone match; Inner side, described nut upper end has a bulge loop, and this bulge loop downside is established and pressed plane, and this is pressed plane and matches with described pressurized plane, to compress down holddown spring chuck of mode by plane; Described nut inner side is provided with internal screw thread, and outside, described handle of a knife body upper end is provided with the external screw teeth matching with internal screw thread.
As entering to set forth on one to of the present invention:
Described nut lower end is provided with locking assisted parts, the medial surface of this locking assisted parts is for going straight up to medial surface, described handle of a knife body is provided with the step matching with described locking assisted parts, this step has a spacing end face and goes straight up to lateral surface, wherein, described spacing end face is in order to limit the locking terminal of nut, described in go straight up to lateral surface and go straight up to medial surface in order to coordinate, to screw in process at nut, avoid nut skew axis direction.Further, the outside of described locking assisted parts is provided with convex annular edge, and the spacing effect of spanner can not only be played in this convex annular edge in the process that screws nut, and, this convex annular, along can be in the process of handle of a knife High Rotation Speed, plays the effect of balance handle of a knife, increase inertia.This nut is A type nut, between A type nut sidewall and convex annular edge, has an inclined-plane, and the angle of this inclined-plane and nut sidewall is 135 °.
The invention has the beneficial effects as follows: on the one hand, pressing plane due to nut bulge loop of the present invention is to compress mode with plane down to press collet cannelure pressurized plane, therefore, the present invention is in holding cutter High Rotation Speed process, be not vulnerable to the external force impact such as biasing force, rolling power, concentricity is more stable; On the other hand, handle of a knife body upper shaft core of the present invention is 12 ° of cone match with coordinating of collet, and these 12 ° of conical surfaces can ensure better chucking power and clamping stability, can ensure again good machining accuracy.Adopt the handle of a knife of structure of the present invention, under existing process conditions, the combination precision of its handle of a knife and cutter all can be controlled in 2 μ m, and this wherein has the handle of a knife of 60%-80% and the combination precision of cutter can be in 1 μ m.
Brief description of the drawings
Fig. 1 is existing ER Knife handle structure figure, and in figure, the top of handle of a knife is divided into cutaway view.
Fig. 2 is existing SK Knife handle structure figure, and in figure, the top of handle of a knife is divided into cutaway view.
Fig. 3 is handle of a knife of the present invention (Cologne KL handle of a knife) structure chart, and in figure, the top of handle of a knife is divided into cutaway view.
Fig. 4 is A part-structure enlarged drawing in Fig. 3.
Fig. 5 is B part-structure enlarged drawing in Fig. 3.
Fig. 6 is handle of a knife of the present invention (Cologne KL handle of a knife) forward angular separation structure chart.
Fig. 7 is oppositely angle dispersed structure figure of handle of a knife of the present invention (Cologne KL handle of a knife).
Fig. 8 is A type nut (the Cologne KLA type nut) longitudinal section that the present invention adopts.
In figure:
ER handle of a knife: 100.ER handle of a knife; 110. handle of a knife bodies; 111.16 ° of taper holes; 112. external screw teeth; 120. collet; 121.60 ° of cone structures; 122.16 ° of cone structures; 130. nut; 131.60 ° of taper holes; 132. internal screw thread;
SK handle of a knife: 200.SK handle of a knife; 210. handle of a knife bodies; 211.8 ° of taper holes; 212. external screw teeth; 220. collet; 221. cannelure; 222.8 ° of cone structures; 2211. pressurized plane; 230. nut; 231. bulge loop; 2311. press plane; 232. internal screw thread;
Handle of a knife of the present invention (Cologne KL handle of a knife): 300. superhigh precision handle of a knifes; 310. handle of a knife bodies; 311.12 ° of taper holes; 312. external screw teeth; 313. step; 3131. spacing end face; 3132. go straight up to lateral surface; 320. collet; 321. cannelure; 3211. pressurized plane; 322.12 ° of cone structures; 330. nut; 331. bulge loop; 3311. press plane; 332. internal screw thread; 333. locking assisted parts; 3331. go straight up to medial surface; 3332. convex annular edge; 3333. inclined-plane.
Detailed description of the invention
For further understanding feature of the present invention, technological means and the specific purposes that reach, function, resolve the advantages and spirit of the present invention, by the present invention is further elaborated by the following examples.
As shown in Fig. 3-Fig. 8, the present invention is a kind of superhigh precision handle of a knife 300, product designation: Cologne KL handle of a knife, according to collet size, comprises the series such as KL8, KL12, KL16, KL20, KL24.This superhigh precision handle of a knife 300 comprises handle of a knife body 310, collet 320 and nut 330; Described collet 320 upper ends have a cannelure 321, and these cannelure 321 downsides are established pressurized plane 3211; Described collet 320 lower ends are 12 ° of cone structures 322; Described handle of a knife body 310 upper shaft cores have 12 ° of taper holes 311, these 12 ° of taper holes 311 and collet 320 lower end phase cone match; Described nut 330 inner sides, upper end have a bulge loop 331, and these bulge loop 331 downsides are established and pressed plane 3311, and this is pressed plane 3311 and matches with described pressurized plane 3211, to compress down holddown spring chuck 320 of mode by plane; Described nut 330 inner sides are provided with internal screw thread 332, and described handle of a knife body 310 outsides, upper end are provided with the external screw teeth 312 matching with internal screw thread 332.
When clamping cutter (not shown cutter), first collet 320 upper ends are fastened to nut 330 upper ends, buckle into by the bulge loop 331 of nut 330 in the cannelure 321 of collet 320; Then collet 320 lower ends are inserted in the taper hole 311 of handle of a knife body 310 upper ends, insert cutter, screw in again nut 330, now, the plane 3311 of pressing of nut bulge loop 331 compresses with plane the pressurized plane 3211 that mode is down pressed collet cannelure 321, collet 320 lower ends compress with 12 ° of cone match with handle of a knife body 310 upper shaft cores, and final collet 320 screws in by nut 330 and compresses, fixed cutting tool.
As shown in Fig. 3, Fig. 4, Fig. 6-Fig. 8, described nut 330 lower ends are provided with locking assisted parts 333, the medial surface of this locking assisted parts 333 is for going straight up to medial surface 3331, described handle of a knife body 310 is provided with the step 313 matching with described locking assisted parts 333, this step 313 has a spacing end face 3131 and goes straight up to lateral surface 3132, wherein, described spacing end face 3131 is in order to limit the locking terminal of nut 330, the described lateral surface 3132 of going straight up to is gone straight up to medial surface 3331 in order to coordinate, to screw in process at nut 330, avoid nut 330 to be offset axis direction.Further, the outside of described locking assisted parts 333 is provided with convex annular along 3332, this convex annular can not only play the spacing effect of spanner along 3332 in the process that screws nut 330, and, this convex annular is along 3332 can be in the process of handle of a knife High Rotation Speed, the effect that can play balance handle of a knife, increases inertia.As shown in Fig. 8, this nut 330 is A type nut, and A type nut sidewall and convex annular have an inclined-plane 3333 between 3332, and this inclined-plane 3333 is 135 ° with the angle of nut sidewall; Certainly, this nut also can adopt S type nut, i.e. high speed nut.
Experimental data: non-defective unit handle of a knife (the KL handle of a knife of manufacturing under existing process conditions, measure through fine measuring instrument, the combination precision of handle of a knife of the present invention and cutter all can be controlled in 2 μ m, and this wherein has the handle of a knife of 60%-80% and the combination precision of cutter can be in 1 μ m.
The above, be only preferred embodiments of the present invention, and any trickle amendment, equivalent variations and modification that every foundation technical scheme of the present invention is done above embodiment, all belong in the scope of technical solution of the present invention.

Claims (4)

1. a superhigh precision handle of a knife, is characterized in that: comprise handle of a knife body (310), collet (320) and nut (330); Described collet (320) upper end has a cannelure (321), and this cannelure (321) downside is established pressurized plane (3211); Described collet (320) lower end is 12 ° of cone structures (322); Described handle of a knife body (310) upper shaft core has 12 ° of taper holes (311), these 12 ° of taper holes (311) and collet (320) lower end phase cone match; Inner side, described nut (330) upper end has a bulge loop (331), this bulge loop (331) downside is established and is pressed plane (3311), this is pressed plane (3311) and matches with described pressurized plane (3211), to compress down holddown spring chuck (320) of mode by plane; Described nut (330) inner side is provided with internal screw thread (332), and outside, described handle of a knife body (310) upper end is provided with the external screw teeth (312) matching with internal screw thread (332).
2. superhigh precision handle of a knife according to claim 1, it is characterized in that: described nut (330) lower end is provided with locking assisted parts (333), the medial surface of this locking assisted parts (333) is for going straight up to medial surface (3331), described handle of a knife body (310) is provided with the step (313) matching with described locking assisted parts (333), this step (313) has a spacing end face (3131) and goes straight up to lateral surface (3132), wherein, described spacing end face (3131) is in order to limit the locking terminal of nut (330), the described lateral surface (3132) of going straight up to is gone straight up to medial surface (3331) in order to coordinate, to screw in process at nut (330), avoid nut (330) skew axis direction.
3. superhigh precision handle of a knife according to claim 2, is characterized in that: the outside of described locking assisted parts (333) is provided with convex annular along (3332).
4. superhigh precision handle of a knife according to claim 3, it is characterized in that: this nut (330) is A type nut, A type nut sidewall and convex annular have an inclined-plane (3333) along between (3332), and this inclined-plane (3333) are 135 ° with the angle of nut sidewall.
CN201420005320.1U 2014-01-06 2014-01-06 Knife handle with ultra-high accuracy Withdrawn - After Issue CN203679896U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103707107A (en) * 2014-01-06 2014-04-09 东莞市科隆实业有限公司 Ultrahigh precision knife handle
CN105127463A (en) * 2015-08-27 2015-12-09 宁波川景誉机械科技发展有限公司 Shank structure for cutter clamping
CN108145525A (en) * 2017-12-25 2018-06-12 陈豪 A kind of single lathe tool case of fixation
CN109623422A (en) * 2019-01-17 2019-04-16 湖南南方机床有限公司 A kind of broaching tool knife handle component

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103707107A (en) * 2014-01-06 2014-04-09 东莞市科隆实业有限公司 Ultrahigh precision knife handle
CN105127463A (en) * 2015-08-27 2015-12-09 宁波川景誉机械科技发展有限公司 Shank structure for cutter clamping
CN108145525A (en) * 2017-12-25 2018-06-12 陈豪 A kind of single lathe tool case of fixation
CN109623422A (en) * 2019-01-17 2019-04-16 湖南南方机床有限公司 A kind of broaching tool knife handle component
CN109623422B (en) * 2019-01-17 2024-03-22 湖南南方机床有限公司 Broach handle of a knife subassembly

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GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20140702

Effective date of abandoning: 20160525

C25 Abandonment of patent right or utility model to avoid double patenting