CN204277593U - Switching tool shank - Google Patents
Switching tool shank Download PDFInfo
- Publication number
- CN204277593U CN204277593U CN201420528389.2U CN201420528389U CN204277593U CN 204277593 U CN204277593 U CN 204277593U CN 201420528389 U CN201420528389 U CN 201420528389U CN 204277593 U CN204277593 U CN 204277593U
- Authority
- CN
- China
- Prior art keywords
- gland
- tool shank
- switching tool
- connecting portion
- taper
- 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 - Lifetime
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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- Drilling Tools (AREA)
Abstract
The utility model discloses a kind of switching tool shank, comprise switching tool shank body, the rear portion of this switching tool shank body is taper shank, its front portion is cylindrical connecting portion, the male cone (strobilus masculinus) of described taper shank by with the suitable metric system of the conical surface of use Taper Bore of Spindle or the Mohs conical surface, this switching tool shank body front end surface has the taper hole suitable with BT type knife handle, also comprises gland; The cylinder of described connecting portion has external screw thread; The rear portion of the endoporus of described gland has the internal thread suitable with the external screw thread of described connecting portion, and the front portion of the endoporus of this gland has the tension tooth along this endoporus radial protrusion; Described gland and described connecting portion are spirally connected.After adopting gland installation way, rotate gland and removable cutting tool, have that tool changing is convenient, handling fast, install firmly, transmitting accuracy is high, the simple advantage of structure.
Description
Technical field
This utility model relates to machinery and adds cutter field, specifically relates to a kind of switching tool shank.
Background technology
Handle of a knife is the tie of connecting machine tool and cutter.Usually in machine tool chief axis, have the internal taper hole that is high-accuracy, the specification of cone normally by lathe manufacturer according to the effective power of lathe or use the overall length of cutter to select.Before numerically controlled processing equipment occurs, the knife handle specification that boring machine is commonly used is generally the Morse taper shank of 1:20.047 or the metric system taper shank of 1:20, and the inner cone hole of main shaft specification of old-fashioned lathe has metric system 140mm, metric system 120mm, metric system 100mm, Mohs 6#, Mohs 5#, Mohs 4# and Mohs 3# etc.Along with popularizing of numerically controlled processing equipment, numerical control machining cutter obtains with the advantage of its standardization, modularization, seriation, high efficiency and uses widely.But a lot of old lathe cannot install because cutter interface is different and use the numerical control machining cutter of these advanced persons, and production efficiency cannot be improved.
Summary of the invention
The technical problems to be solved in the utility model is: providing a kind of can be the switching tool shank of BT type cutter interface by the metric system of machine tool chief axis or Mohs cutter interface conversion.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of switching tool shank, comprise switching tool shank body, the rear portion of this switching tool shank body is taper shank, its front portion is cylindrical connecting portion, the male cone (strobilus masculinus) of described taper shank by with the suitable metric system of the conical surface of use Taper Bore of Spindle or the Mohs conical surface, this switching tool shank body front end surface has the taper hole suitable with BT type knife handle.
Also comprise gland; The cylinder of described connecting portion has external screw thread; The rear portion of the endoporus of described gland has the internal thread suitable with the external screw thread of described connecting portion, and the front portion of the endoporus of this gland has the tension tooth along this endoporus radial protrusion; Described gland and described connecting portion are spirally connected.
The external screw thread of described connecting portion is closely-pitched triangle thread.
The tension tooth of described gland is two, and these two tension teeth are mutually opposing.
The front end face of described switching tool shank body has axial raised straight end-face key.
Advantageous Effects of the present utility model is:
The male cone (strobilus masculinus) of the taper shank at the rear portion of the utility model switching tool shank body by with the suitable metric system of the conical surface of use Taper Bore of Spindle or the Mohs conical surface, this taper shank can match with the internal taper hole of machine tool chief axis, taper hole and the BT type knife handle of this switching tool shank body front end surface are suitable, under the prerequisite without the need to doing any change to machine tool chief axis, can be BT type cutter interface by the metric system of machine tool chief axis or Mohs cutter interface conversion, thus enable old lathe install and use the NC cutting tool of BT series, improve the production efficiency of old lathe, structure is simple.
The utility model eliminates existing blind rivet clamping mode, add gland, the front portion of this gland endoporus has the tension tooth along this endoporus radial protrusion, the cylinder of switching tool shank body connecting portion of the present utility model has external screw thread, during use, tension tooth is sticked in the V-shaped groove of BT type knife handle, and gland is spirally connected by the internal thread at its endoporus rear portion and connecting portion, thus is pressed in the taper hole of switching tool shank body front end surface by BT type knife handle.After adopting gland installation way, rotate gland and removable cutting tool, have that tool changing is convenient, handling fast, install firmly, transmitting accuracy is high, the simple advantage of structure.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of BT knife handle;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the structural representation of switching tool shank body of the present utility model;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the structural representation of gland of the present utility model;
Fig. 6 is the right view of Fig. 5.
Detailed description of the invention
For can technical characteristic of the present utility model and effect be described in detail, and can realize according to the content of this description, below in conjunction with accompanying drawing, embodiment of the present utility model be further illustrated.
Fig. 1 shows a kind of BT knife handle, the rear portion of its handle of a knife body is taper shank 2, the male cone (strobilus masculinus) of this taper shank 2 is the 7:24 conical surface, for matching with the internal taper hole of machine tool chief axis, handle of a knife body rear end face has axially extended blind rivet hole 1, the cylinder of handle of a knife body portion has V-shaped groove 3 and the side keyway 4 of ring-type, handle of a knife body front end face is provided with Cutting tool installation manner end 5.
Fig. 2 shows a kind of switching tool shank of the present utility model, comprises switching tool shank body 10 and gland 20.Together see Fig. 3 and Fig. 4, the rear portion of switching tool shank body 10 is taper shank 11, the front portion of switching tool shank body 10 is cylindrical connecting portion 13, the male cone (strobilus masculinus) of taper shank 11 by with the suitable metric system of the conical surface of use Taper Bore of Spindle or the Mohs conical surface, for matching with the internal taper hole of used machine tool chief axis, this switching tool shank body front end surface has taper hole 12, this taper hole 12 is for matching with BT type knife handle, it coordinates form and precision should meet the international standard of BT type knife handle, this taper hole 12 is 7:24 conical bore, its circular cone outside diameter D can be respectively: BT30 D=Φ 31.75, BT40 D=Φ 44.45, BT50 D=Φ 69.85 and other suitable parameter meeting international standard.Together see Fig. 5 and Fig. 6, the cylinder of the connecting portion 13 of switching tool shank body 10 has external screw thread 13-1, and this external screw thread 13-1 can adopt the closely-pitched triangle thread of M120 × 3; The rear portion of the endoporus of gland 20 has the internal thread 21 suitable with the external screw thread 13-1 of connecting portion 13, this internal thread 21 can adopt M120 × 3 closely-pitched triangle thread, it is right-handed thread, coordinate with the closely-pitched triangle thread of switching tool shank body 10, for connecting switching tool shank body 10 and gland 20, the front portion of the endoporus of gland 20 has the tension tooth 22 along this endoporus radial protrusion, and this tension tooth 22 is two, and these two tension teeth 22 are mutually opposing.During use, tension tooth 22 for be sticked in BT type knife handle V-shaped groove 3 in thus compress knife handle.
See Fig. 3 and Fig. 4, the front end face of switching tool shank body 10 has two axial raised straight end-face keys 14, and these two straight end-face keys 14 are meshed with the keyway 4 of BT type handle of a knife, for transmitting torque between switching tool shank and knife handle.Its profile should meet BT type handle of a knife to the dimensional requirement of straight end-face key.
The male cone (strobilus masculinus) of the taper shank 11 of switching tool shank body 10 has the chock hole 15 radially extended, during installation, taper shank 11 is loaded Taper Bore of Spindle, and wedge in this chock hole 15 with chock, thus the utility model is fixedly connected with machine tool chief axis, generally, no longer take off again after this time loading.
See Fig. 5 and Fig. 6, the peripheral surface of gland 20 has fastening part 23, and this fastening part 23 is the draw-in groove fastened with the claw of Hook wrench, the wide 8mm of this draw-in groove, hook spanner rotary gland 20 easy to use, compresses or loosening cutter handle of a knife, preferably, fastening part 23 is uniform along the peripheral surface of gland 20.Certainly, this fastening part 23 also can be the blocking plane fastened with other spanners.The material of gland 20 can select 45# steel and through modified blackening process.
During use, gland 20 is screwed in switching tool shank body 10 by the triangle thread of M120 × 3, and the taper shank 2 making the tension tooth 22 of gland 10 align side keyway 4, the BT knife handle of BT knife handle inserts in the taper hole 12 of switching tool shank body 10.Now the side keyway 4 of BT type knife handle engages completely with the straight end-face key 14 of switching tool shank body 10.To turn clockwise gland 20 with hook spanner, and by hook spanner plate gland 20, gland 20 axially moves to taper shank 11 direction along switching tool shank body 10, two tension teeth 22 are utilized to compress the V-type groove 3 of BT knife handle, the pitch of M120 × 3 triangle thread that gland 20 is connected with switching tool shank body 10 is 3mm, tension tooth 22 is no more than 0.5mm with the gap of the V-type groove 3 of BT knife handle, generally can compress BT knife handle after gland 20 half-twist.When needing tool changing, only need use hook spanner inverse time needle plate dynamic pressure lid 20, make the taper seat of taper hole 12 be threaded to V-arrangement keyway 3 place and can load and unload cutter.
Because lathe forward direction is counterclockwise, general universal cutter is also rotate forward design (except special tool).After installing cutter, during normal process, lathe rotates forward, and gland 20 is for turning clockwise compression, and direction is just in time contrary, makes cutter be pressed tighter and tighter, can not get loose phenomenon.
As can be seen here, design principle of the present utility model is: with the V-type groove 3 (handgrip groove) of BT type knife handle for impetus, using the inner conical surface of taper hole 12 as positioning datum, with straight end-face key 14 transmitting torque, by rotary gland 20, tension tooth 22 is utilized switching tool shank body 10 and BT type knife handle to be connected as one.
It should be noted that, the utility model adopts the taper hole 12 of different size, can coordinate with the BT knife handle of dimension, and the specification of these BT knife handle can be 30,35,40,45,50 and 60 etc.According to the size of lathe and the difference of effective power, generally, Mohs 4# taper shank can be converted to BT30, Mohs 5# and 6# is converted to BT40, metric system 100mm and above specification thereof are converted to BT50.The quantity of above-mentioned straight end-face key 14 is not particular value, goes back other quantity as required.Obviously, the utility model is not limited to above-mentioned gland installation way generation, can also adopt the blind rivet clamping mode of prior art.
Also it should be noted that, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any applicable mode.In order to avoid unnecessary repetition, the utility model is no longer described various possible combination.
Being described in detail the utility model above with reference to embodiment, is illustrative and not restrictive, in the change do not departed under the utility model general plotting and amendment, all within protection domain of the present utility model.
Claims (4)
1. a switching tool shank, comprise switching tool shank body, the rear portion of this switching tool shank body is taper shank, its front portion is cylindrical connecting portion, the male cone (strobilus masculinus) of described taper shank by with the suitable metric system of the conical surface of use Taper Bore of Spindle or the Mohs conical surface, this switching tool shank body front end surface has the taper hole suitable with BT type knife handle, it is characterized in that, also comprises gland; The cylinder of described connecting portion has external screw thread; The rear portion of the endoporus of described gland has the internal thread suitable with the external screw thread of described connecting portion, and the front portion of the endoporus of this gland has the tension tooth along this endoporus radial protrusion; Described gland and described connecting portion are spirally connected.
2. switching tool shank according to claim 1, is characterized in that, the external screw thread of described connecting portion is closely-pitched triangle thread.
3. switching tool shank according to claim 1 and 2, is characterized in that, the tension tooth of described gland is two, and these two tension teeth are mutually opposing.
4. switching tool shank according to claim 1 and 2, is characterized in that, the front end face of described switching tool shank body has axial raised straight end-face key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528389.2U CN204277593U (en) | 2014-09-16 | 2014-09-16 | Switching tool shank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528389.2U CN204277593U (en) | 2014-09-16 | 2014-09-16 | Switching tool shank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204277593U true CN204277593U (en) | 2015-04-22 |
Family
ID=52860789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420528389.2U Expired - Lifetime CN204277593U (en) | 2014-09-16 | 2014-09-16 | Switching tool shank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204277593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604648A (en) * | 2019-01-11 | 2019-04-12 | 霍山嘉远智能制造有限公司 | A kind of machine tool connection structure |
-
2014
- 2014-09-16 CN CN201420528389.2U patent/CN204277593U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604648A (en) * | 2019-01-11 | 2019-04-12 | 霍山嘉远智能制造有限公司 | A kind of machine tool connection structure |
| CN109604648B (en) * | 2019-01-11 | 2023-12-29 | 霍山嘉远智能制造有限公司 | Machine tool cutter connection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220523 Address after: 618000 No. 666, Jinsha Jiangxi Road, Deyang City, Sichuan Province Patentee after: Deyang Guangda Dongqi New Material Co.,Ltd. Address before: 618000 Jinsha Jiangxi Road, high tech Industrial Park, Deyang, Sichuan, 666 Patentee before: DONGFANG TURBINE Co.,Ltd. DTC |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150422 |