CN201815680U - Threaded connection structure of cutter with replaceable cutter head - Google Patents
Threaded connection structure of cutter with replaceable cutter head Download PDFInfo
- Publication number
- CN201815680U CN201815680U CN2010205632467U CN201020563246U CN201815680U CN 201815680 U CN201815680 U CN 201815680U CN 2010205632467 U CN2010205632467 U CN 2010205632467U CN 201020563246 U CN201020563246 U CN 201020563246U CN 201815680 U CN201815680 U CN 201815680U
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- thread
- cutter
- connection structure
- pitch
- cutter head
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- 238000012545 processing Methods 0.000 abstract description 6
- 239000007787 solid Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XAYGUHUYDMLJJV-UHFFFAOYSA-Z decaazanium;dioxido(dioxo)tungsten;hydron;trioxotungsten Chemical compound [H+].[H+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O XAYGUHUYDMLJJV-UHFFFAOYSA-Z 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a threaded connection structure of a cutter with a replaceable cutter head, belonging to the field of mechanical processing. The structure comprises a cutter head and a cutter handle which is in threaded connection with the cutter head, wherein the tooth top width and the tooth root width of the threads are 1/4 times of the thread pitch; the thread height of the threads is 1/2 times of the tooth top height; the thread angle of the threads is 44 degrees, the halves of the thread angle are bilaterally symmetrical, the half angle is 22 degrees, and the threads have rightward direction of turning and single helical pitch; and the thread pitch is the common thread pitch of metric 60 degrees. The cutter in the utility model has the characteristics of high connection strength, good wear resistance and long service life and can bear larger impact force.
Description
Technical field
The utility model relates to machining, especially a kind of screw connection structure of interchangeable bit tool.
Background technology
Solid carbide becomes the first-selected standard of many manufacture fields such as Mould Machining with the advantage of its high rigidity, low vibration, but the price along with raw material ammonium paratungstate (APT) powder of making carbide alloy skyrocketed in recent years, caused the price of solid carbide to rise suddenly and sharply 60%～70% simultaneously.In order to reduce cost, released a kind of cutter of interchangeable cutter head on the market again, it combines the advantage of solid carbide and indexable insert tip, throw away tip, and this cutter cutter head is a carbide alloy, and handle of a knife is a steel part.Various dissimilar cutting head can be installed on the handle of a knife, can obtain to process versatility and professional, and improve the cost and the clamping of cutter.Interchangeable bit tool can reach the crudy the same with solid carbide under square one, under the prerequisite of processing equal accuracy, obtain higher productivity ratio with lower processing cost, thereby use with minimized Hardmetal materials, realize maximized stability and high precision cutting tools.Above-mentioned handle of a knife also can be carbide alloy.
But existing interchangeable cutter head connects with 60 ° of shape-V threads mostly, this form of thread is darker, tooth top and tooth root are thiner, after cutter head screws in handle of a knife, on lathe in the processing parts, because crackle appears in the tooth form tooth root place that acts on of stress easily, and cutter head and handle of a knife are scrapped simultaneously, has increased the processing risk.
Summary of the invention
The technical problems to be solved in the utility model is the problem at above-mentioned existence, a kind of bonding strength height is provided, can bears the more screw connection structure of the interchangeable bit tool of large impact power.
The screw connection structure of the interchangeable bit tool that the utility model adopts comprises cutter head and the handle of a knife that is threaded with it, and the tooth top width of described screw thread and tooth root are wide to be 1/4 times of pitch.By the tooth top of increase form of thread and the width of tooth root, improved the bonding strength of screw thread, increased the repeated clamping wearability of screw thread.
Further improving is that the form of thread height is 1/2 times of tooth depth.Because the maximum equivalent of thread engagement appears at male connection root and internal threaded end, promptly be positioned at the last engagement place that internal and external screw thread connects, by reducing the form of thread height, promptly reduced the height of the last engagement place of screw thread, last engagement place stress maximum and the load of bearing reduce, when improving fatigue strength, still keep the torsional strength identical and the quality of connection of integral joint screw thread with conventional nipple.
Further improvement is, the form of thread angle is 44 °, the half of thread angle left-right symmetry, and half-angle is 22 °.
Further improving is that described thread rotary orientation is dextrorotation, single helical pitch screw thread.
Further improving is that above-mentioned pitch is preferably 60 ° of regular screw threads pitch of the metric system.
Adopt the utility model of said structure, by improvement to tooth form, improved the bonding strength of screw thread, reduced the maximum stress value of the tooth form of internal and external threads engagement place, increase the fatigue resistance at screw-threaded engagement place, existing bonding strength height, can bear the characteristics of greater impact power.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the utility model syndeton schematic diagram.
Fig. 2 is the tooth form structural representation of screw connection point shown in Figure 1.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model as shown in Figure 1 comprises cutter head 3 and handle of a knife 1, and cutter head processes external screw thread, and handle of a knife processes suitable with it internal thread, adopts the improved internal and external threads 2 of tooth form to connect between cutter head and the handle of a knife.The tooth form structure of this screw thread as shown in Figure 2, the tooth form design parameter comprises tooth form angle α, half of thread angle α ＇, the high h of tooth form, tooth top width f, the wide w of tooth root, height of teeth top, tooth depth H, pitch P.In the present embodiment, the pitch P of screw thread is 60 ° of regular screw threads pitch of the metric system, and thread rotary orientation is dextrorotation, single helical pitch screw thread.Tooth depth H=1.237543427 P, the high h=H/2=0.618771713 P of tooth form, height of teeth top H/4=0.309385856 P; The wide w=1/4P of tooth top width f=tooth root; Form of thread angle α=44 °, half of thread angle left-right symmetry, form of thread half-angle α ＇=22 °.
The interchangeable bit tool that adopts the utility model modified helicitic texture to connect carries out behind the lathe clamping in the cutting process, has the bonding strength height, can bear the more feature of large impact power, and improve its service life, and the unit processing cost reduces.
The above only is preferred embodiment of the present utility model, all any modifications of being done within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. the screw connection structure of interchangeable bit tool comprises cutter head and the handle of a knife that is threaded with it, it is characterized in that: wide for pitch 1/4 times of the tooth top width of described screw thread and tooth root.
2. the screw connection structure of interchangeable bit tool according to claim 1, it is characterized in that: the form of thread height is 1/2 times of height of teeth top.
3. the screw connection structure of interchangeable bit tool according to claim 2, it is characterized in that: the form of thread angle is 44 °, the half of thread angle left-right symmetry, half-angle is 22 °.
4. according to the screw connection structure of claim 2 or 3 described interchangeable bit tools, it is characterized in that: described thread rotary orientation is dextrorotation, single helical pitch screw thread.
5. the screw connection structure of interchangeable bit tool according to claim 4, it is characterized in that: described pitch is 60 ° of regular screw threads pitch of the metric system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205632467U CN201815680U (en) | 2010-10-16 | 2010-10-16 | Threaded connection structure of cutter with replaceable cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205632467U CN201815680U (en) | 2010-10-16 | 2010-10-16 | Threaded connection structure of cutter with replaceable cutter head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201815680U true CN201815680U (en) | 2011-05-04 |
Family
ID=43913651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205632467U Expired - Lifetime CN201815680U (en) | 2010-10-16 | 2010-10-16 | Threaded connection structure of cutter with replaceable cutter head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201815680U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338974A (en) * | 2014-10-27 | 2015-02-11 | 株洲钻石切削刀具股份有限公司 | Rotating cutter capable of being repeatedly loaded and unloaded |
| CN104384574A (en) * | 2014-10-27 | 2015-03-04 | 株洲钻石切削刀具股份有限公司 | Repeatedly-detachable rotary tool |
-
2010
- 2010-10-16 CN CN2010205632467U patent/CN201815680U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338974A (en) * | 2014-10-27 | 2015-02-11 | 株洲钻石切削刀具股份有限公司 | Rotating cutter capable of being repeatedly loaded and unloaded |
| CN104384574A (en) * | 2014-10-27 | 2015-03-04 | 株洲钻石切削刀具股份有限公司 | Repeatedly-detachable rotary tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |