CN214814841U - Special frock of turning bolt axle - Google Patents
Special frock of turning bolt axle Download PDFInfo
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- CN214814841U CN214814841U CN202121306643.0U CN202121306643U CN214814841U CN 214814841 U CN214814841 U CN 214814841U CN 202121306643 U CN202121306643 U CN 202121306643U CN 214814841 U CN214814841 U CN 214814841U
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- bolt shaft
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Abstract
The utility model discloses a special frock of turning bolt axle, adapter sleeve including the cylinder, the axle center trompil of adapter sleeve forms the holding hole that is used for holding bolt axle, holding hole one side inside be provided with bolt axle external screw thread assorted internal thread. Through increasing the adapter sleeve between clamping jaw and bolt axle, avoid the clamping jaw directly to be in the bolt epaxial with the clamping-force, the rethread sets up in the adapter sleeve with the external screw thread assorted internal thread of bolt axle for bolt axle passes through threaded connection with the adapter sleeve and fixes, and then makes the clamping jaw just can realize fixing the bolt axle through centre gripping adapter sleeve outer wall, and the simple easy preparation of structure, and convenient and practical has solved the difficult problem of end fixing fragile screw thread when turning bolt axle.
Description
Technical Field
The utility model belongs to the technical field of the turning lathe frock, specifically speaking relates to a special frock of turning bolt axle.
Background
The three-jaw chuck has a quick self-centering function, so that the three-jaw chuck is widely applied to the field of lathes, but in the actual machining process, the clamping jaws of the three-jaw chuck directly clamp a workpiece, the clamping force is usually high, the clamping jaws are very easy to damage the surface of the workpiece, and especially for a bolt shaft with threads on the surface, the clamping marks of the clamping jaws easily cause thread failure.
Accordingly, further developments and improvements are still needed in the art.
SUMMERY OF THE UTILITY MODEL
Aiming at various defects in the prior art, in order to solve the problems, a special tool for turning a bolt shaft is provided. The utility model provides a following technical scheme:
the utility model provides a special frock of turning bolt axle, includes the adapter sleeve of cylinder, the axle center trompil of adapter sleeve forms the holding hole that is used for holding the bolt axle, hold hole one side inside be provided with bolt axle external screw thread assorted internal thread.
Furthermore, the connecting sleeve comprises an upper connecting sleeve and a lower connecting sleeve which are oppositely arranged.
Further, one side end of the connecting sleeve extends outwards to form a flange for abutting against the end of the clamping jaw.
Further, the flange is located at an end portion on the internal thread setting side.
Furthermore, the containing hole comprises a front hole and a rear hole, and an internal thread matched with the external thread of the bolt shaft is arranged on the inner wall of the front hole.
Further, the inner diameter of the front hole is not larger than the outer diameter of the bolt shaft.
Further, the inner diameter of the front hole is smaller than that of the rear hole.
Furthermore, a chamfer is arranged at the joint of the rear hole and the front hole.
Further, the front hole length is greater than the rear hole length.
Furthermore, the accommodating hole is a through hole which penetrates through the accommodating hole from front to back.
Has the advantages that:
1. the connecting sleeve is additionally arranged between the clamping jaw and the bolt shaft, so that the clamping jaw is prevented from directly applying clamping force on the bolt shaft, the bolt shaft and the connecting sleeve are fixedly connected through threads by arranging the internal thread matched with the external thread of the bolt shaft in the connecting sleeve, and the clamping jaw can fix the bolt shaft by clamping the outer wall of the connecting sleeve;
2. the upper connecting sleeve and the lower connecting sleeve are arranged in pairs, so that the connecting sleeves can be directly clamped on the bolt shafts, convenience and rapidness are realized, and the bolt shafts can be arranged in the connecting sleeves without consuming screwing time;
3. the inner diameter of the front hole is smaller, so that the upper connecting sleeve and the lower connecting sleeve form a certain distance after the bolt shaft is clamped, and the connecting sleeve can be tightly fastened on the bolt shaft by compressing the upper connecting sleeve and the lower connecting sleeve in the clamping process of the clamping jaw chuck.
Drawings
Fig. 1 is a schematic structural view of a special tool for turning a bolt shaft and the bolt shaft in an embodiment of the present invention;
fig. 2 is a schematic structural view of a part of a tooling special for turning a bolt shaft in an embodiment of the present invention;
fig. 3 is another schematic view of a part of a tooling dedicated for turning a bolt shaft according to an embodiment of the present invention;
in the drawings: 100. connecting sleeves; 110. connecting a sleeve; 120. a lower connecting sleeve; 200. a housing hole; 210. a front aperture; 220. a rear aperture; 230. chamfering; 300. a flange; 400. a bolt shaft.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.
As shown in fig. 1 to 3, a tool special for turning a bolt shaft includes a cylindrical connecting sleeve 100, a hole 200 for accommodating a bolt shaft 400 is formed in an opening of an axis of the connecting sleeve 100, and an internal thread matched with an external thread of the bolt shaft 400 is arranged inside one side of the accommodating hole 200. Through increase adapter sleeve 100 between clamping jaw and bolt axle 400, avoid the clamping jaw directly with the clamping-force on bolt axle 400, the rethread sets up in adapter sleeve 100 with the external screw thread assorted internal thread of bolt axle 400, it is fixed to make bolt axle 400 pass through threaded connection with adapter sleeve 100, and then make the clamping jaw just can realize fixing bolt axle 400 through centre gripping adapter sleeve 100 outer wall, the simple easy preparation of structure, and convenient and practical, the difficult problem of the fixed fragile screw thread of tip when having solved turning bolt axle 400.
Further, the connecting sleeve 100 includes an upper connecting sleeve 110 and a lower connecting sleeve 120 which are oppositely disposed. Upper coupling sleeve 110 and lower coupling sleeve 120 are arranged in pairs, so that coupling sleeve 100 can be directly clamped to bolt shaft 400, which is convenient and quick, and bolt shaft 400 can be placed in coupling sleeve 100 without consuming screwing time.
Further, one side end of the connecting sleeve 100 extends outwards to form a flange 300 for abutting against the end of the clamping jaw. The clamping jaw is clamped on the outer wall of the connecting sleeve 100 during clamping, the flange 300 is limited, and the end part of the clamping jaw abuts against the flange 300, so that the bolt shaft 400 fixed by the connecting sleeve 100 and the clamping jaw chuck are located at the same axis, and the situation that the bolt shaft 400 is not closed due to the connecting sleeve 100 and the bolt shaft 400 is avoided, and further the subsequent processing precision of the bolt shaft 400 is influenced.
Further, the flange 300 is located at the end portion on the internal thread setting side. Flange 300 and internal thread homonymy set up, make things convenient for the centre gripping scope of spacing clamping jaw for the force of clamping jaw application can realize direct centre gripping location to bolt axle 400.
Further, the receiving hole 200 includes a front hole 210 and a rear hole 220, and an inner wall of the front hole 210 is provided with an inner thread matching with the outer thread of the bolt shaft 400. The inner wall of the rear hole 220 is a smooth inner wall, the inner wall of the front hole 210 is provided with internal threads, and no matter how long the bolt shaft 400 is, the bolt shaft 400 can be effectively fixed only by ensuring that part of the internal threads are in threaded connection with the external threads of the bolt shaft 400 in the front hole 210, and the internal threads do not need to be arranged in the containing hole 200, so that the processing difficulty is reduced.
Further, the inner diameter of the front hole 210 is not greater than the outer diameter of the bolt shaft 400. The inner diameter of the front hole 210 is set to be smaller, so that a certain distance is formed between the upper connecting sleeve 110 and the lower connecting sleeve 120 after the bolt shaft 400 is clamped, and the bolt shaft 400 can be fastened by the connecting sleeve 100 by pressing the upper connecting sleeve 110 and the lower connecting sleeve 120 in the clamping process of the clamping jaw chuck.
Further, the inner diameter of the front hole 210 is smaller than that of the rear hole 220. The setting of back hole 220 internal diameter is great, conveniently has the bolt axle 400 of other parts to the tip to fix processing, and to the bolt axle 400 that has longer external screw thread, great back hole 220 internal diameter can not cause the extrusion to the external screw thread yet simultaneously.
Further, a chamfer 230 is provided at the connection of the rear hole 220 and the front hole 210. The chamfer 230 makes the internal connection smoother, and prevents the edges of the joint from causing contact collision damage to the bolt shaft 400 in the process of clamping the bolt shaft 400.
Further, the front hole 210 has a length greater than that of the rear hole 220. The front hole 210 is the main thread screwing position, so that a longer length needs to be set to increase the screwing area with the bolt shaft 400, improve the fixing strength of the connecting sleeve 100 to the bolt shaft 400, disperse the clamping pressure of the clamping jaws and protect the external thread of the bolt shaft 400.
Furthermore, the accommodating hole is a through hole which penetrates through the accommodating hole from front to back. The through hole that runs through can improve the application scope of adapter sleeve around, makes it be applicable to the centre gripping to the bolt shaft of different length and external screw thread position non-tip.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (10)
1. The utility model provides a special frock of turning bolt axle which characterized in that, includes the adapter sleeve of cylinder, the axle center trompil of adapter sleeve forms the holding hole that is used for holding the bolt axle, holding hole one side inside be provided with bolt axle external screw thread assorted internal thread.
2. The tool special for turning the bolt shaft according to claim 1, wherein the connecting sleeve comprises an upper connecting sleeve and a lower connecting sleeve which are oppositely arranged.
3. The tooling special for the turning bolt shaft of claim 1, wherein the end part of one side of the connecting sleeve extends outwards to form a flange for abutting against the end part of the clamping jaw.
4. The tooling special for the turning bolt shaft of claim 3, wherein the flange is positioned at the end part of the internal thread setting side.
5. The special tool for turning the bolt shaft according to claim 1, wherein the accommodating hole comprises a front hole and a rear hole, and an internal thread matched with the external thread of the bolt shaft is arranged on the inner wall of the front hole.
6. The tool special for turning the bolt shaft of claim 5, wherein the inner diameter of the front hole is not larger than the outer diameter of the bolt shaft.
7. The tooling special for turning bolt shafts of claim 5, wherein the inner diameter of the front hole is smaller than that of the rear hole.
8. The tool special for turning bolt shafts according to claim 7, wherein a chamfer is arranged at the joint of the rear hole and the front hole.
9. The tooling special for the turning bolt shaft of claim 5, wherein the length of the front hole is greater than that of the rear hole.
10. The special tool for turning the bolt shaft according to claim 1, wherein the accommodating hole is a through hole penetrating from front to back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121306643.0U CN214814841U (en) | 2021-06-15 | 2021-06-15 | Special frock of turning bolt axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121306643.0U CN214814841U (en) | 2021-06-15 | 2021-06-15 | Special frock of turning bolt axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214814841U true CN214814841U (en) | 2021-11-23 |
Family
ID=78805279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121306643.0U Active CN214814841U (en) | 2021-06-15 | 2021-06-15 | Special frock of turning bolt axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214814841U (en) |
-
2021
- 2021-06-15 CN CN202121306643.0U patent/CN214814841U/en active Active
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