CN219852179U - Three-jaw eccentric jacket - Google Patents
Three-jaw eccentric jacket Download PDFInfo
- Publication number
- CN219852179U CN219852179U CN202321089372.7U CN202321089372U CN219852179U CN 219852179 U CN219852179 U CN 219852179U CN 202321089372 U CN202321089372 U CN 202321089372U CN 219852179 U CN219852179 U CN 219852179U
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- eccentric
- jaw
- clamping
- chuck
- main body
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- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000005489 elastic deformation Effects 0.000 claims description 11
- 210000000078 claw Anatomy 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 8
- 238000003754 machining Methods 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Abstract
The utility model provides a three-jaw eccentric collet, which comprises an eccentric collet main body and a clamping chuck, wherein a locking mechanism is arranged at the top of the eccentric collet main body, the locking mechanism comprises a limit screw, a guide sleeve is connected to the outside of the limit screw in a sleeved mode, a guide hole is formed in the movable end of the top of the eccentric collet main body, a spring is connected to the inside of the guide sleeve in a sleeved mode, the limit screw is movably connected to the inside of the limit screw, one end of the spring is in contact connection with the inner wall of the guide sleeve, the other end of the spring is in contact connection with the eccentric collet main body, and three chucks are arranged in the clamping chuck; the technical key points are as follows: the eccentric clamping sleeve main body is matched with the inside of the clamping chuck, the three-jaw clamping chuck of the clamping chuck is controlled by the machine tool to clamp the clamped workpiece, the functions and the application range of the three-jaw clamping chuck are fully expanded, the complex and fussy clamping process of the four-jaw clamping chuck is changed into the simple operation clamping process of the three-jaw clamping chuck, and the clamping process is simple and convenient.
Description
Technical Field
The utility model belongs to the technical field of auxiliary accessories for machining, and particularly relates to a three-jaw eccentric jacket.
Background
Three-jaw and four-jaw chucks are the most typical attachment for machining lathes, three-jaw chucks mainly clamp cylindrical workpieces, and four-jaw chucks mainly clamp eccentric and irregularly shaped workpieces. The three-jaw chuck has the concentric clamping function, is simple in clamping operation on a cylindrical workpiece, and is easy to position and align. The independent clamping function of each jaw of the four-jaw chuck is suitable for clamping operation and workpiece alignment of eccentric and irregularly-shaped workpieces.
The existing Chinese patent document publication No. CN202984711U discloses an eccentric three-jaw chuck clamp which clamps a cylinder workpiece to be machined by arranging three soft jaws, and designs the three soft jaws into an eccentric structure, so that the eccentric distance of an eccentric hole to be machined of the cylinder workpiece is identical to that of the eccentric hole to be machined of the cylinder workpiece, and the eccentric hole of the cylinder workpiece is concentric with the rotation center of a lathe spindle, thereby realizing the purpose of changing the milling of a machining center into the machining of a numerical control lathe, being suitable for mass production and improving the production efficiency.
However, in the process of implementing the above technical solution, the following technical problems are found in the above technical solution:
the function of the three-jaw chuck is basically the same as that of the existing three-jaw chuck, the three-jaw chuck cannot adapt to the clamping operation of eccentric and irregularly-shaped workpieces and the alignment of the workpieces, and when the four-jaw chuck is used for carrying out the workpieces, the four-jaw chuck is very tedious and troublesome, and each workpiece must be aligned independently and cannot be positioned.
Disclosure of Invention
In order to overcome the defects of the prior art, the embodiment of the utility model provides the three-jaw eccentric clamping sleeve, the eccentric clamping sleeve main body is used as a transitional clamping sleeve, after the eccentric clamping sleeve main body is matched with the clamping chuck, the clamping chuck can clamp one end of a clamped workpiece, thereby replacing the function of the four-jaw chuck, not only meeting the clamping work of cylindrical workpieces and irregular workpieces, having higher practicability, but also retaining the easy-to-operate characteristic of the existing three-jaw chuck, and solving the problems that the existing three-jaw chuck cannot adapt to the clamping operation of eccentric workpieces and irregular workpieces and the alignment of the workpieces, and when the four-jaw chuck is used for carrying out the workpieces, the four-jaw chuck is very complicated and troublesome, and each workpiece must be aligned independently and cannot be positioned.
The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows:
the three-jaw eccentric collet comprises an eccentric collet main body and a clamping chuck, wherein the eccentric collet main body consists of a left valve and a right valve, a locking mechanism is arranged at the top of the eccentric collet main body and comprises a limit screw, and a guide sleeve is connected to the outside of the limit screw in a sleeved mode;
the eccentric jacket main body is connected inside the clamping chuck in an assembling mode, and three chucks and three claws are arranged inside the clamping chuck.
In one possible implementation manner, a guide hole is processed at the movable end of the top of the eccentric jacket main body, the guide sleeve is connected in a plug-in mode inside the guide hole, and one end of the limit screw is connected with the eccentric jacket main body in a threaded mode.
In one possible implementation manner, a spring is connected inside the guide sleeve in a sleeved mode, the limit screw is movably connected inside the limit screw, one end of the spring is connected with the inner wall of the guide sleeve in a contact mode, and the other end of the spring is connected with the eccentric jacket main body in a contact mode.
In one possible implementation manner, the inside of two sides of the eccentric jacket main body is provided with weight reducing holes, and a clamped workpiece is arranged between the bottom of the eccentric jacket main body and one chuck three jaw.
In one possible implementation manner, one side, close to the center of the section of the clamping chuck, of the three jaws of the clamping chuck is fixedly connected with a thin-wall elastic deformation joint, and the surface of the thin-wall elastic deformation joint is in contact connection with the outer wall of the clamped workpiece.
In one possible implementation, the thin-walled elastically deformable joint is internally machined with centering marks.
The beneficial effects of the utility model are as follows:
firstly, the utility model is used as a transitional jacket accessory, the eccentric jacket main body is matched in the clamping chuck, and the three jaws of the clamping chuck are controlled by a machine tool to clamp a clamped workpiece, so that the function and the application range of the three-jaw chuck are fully expanded, the complex and fussy clamping process of the four-jaw chuck is changed into the simple operation clamping process of the three-jaw chuck, and the clamping process is simple and convenient;
secondly, in this scheme, the repeated positioning accuracy of work piece by the centre gripping is good, and shape position accuracy is controlled, because the terminal surface location of eccentric clamp cover main part is close to chuck three-jaw step face, and the three-jaw of eccentric clamp cover main part internal orifice is long again, so the axis of being held the work piece excircle just, the parallelism of being held work piece car processing department axis and eccentric axis can be obtained assurance, and repeated positioning accuracy is good.
Drawings
FIG. 1 is a front view of the three jaw connection of the eccentric collet body and chuck of the present utility model;
fig. 2 is a left side view of the eccentric collet body and chuck three jaw connection of the present utility model.
Description of the drawings: 1. an eccentric jacket body; 2. a locking mechanism; 21. a limit screw; 22. a spring; 23. a guide sleeve; 24. a guide hole; 3. chuck three jaws; 4. a clamped workpiece; 5. centering the marking line; 6. a thin-wall elastic deformation joint; 7. clamping the chuck.
Description of the embodiments
The technical scheme in the embodiment of the utility model aims to solve the problems of the background technology, and the general thought is as follows:
examples
The embodiment introduces a specific structure of the three-jaw eccentric collet, and particularly referring to fig. 1 and 2, the three-jaw eccentric collet comprises an eccentric collet body 1 and a clamping chuck 7, a locking mechanism 2 is arranged at the top of the eccentric collet body 1, the locking mechanism 2 comprises a limit screw 21, and a guide sleeve 23 is connected to the outside of the limit screw 21 in a sleeved mode;
the eccentric jacket main body 1 consists of a left valve and a right valve, the shape of the eccentric jacket main body is in a disc shape, the eccentric distance e of a clamped workpiece 4 is the same downwards along a vertical axis, the inner-shaped holes of the three chuck claws 3 of the excircle of the clamped workpiece 4 are directionally arranged, a plurality of anti-skid grooves are arranged on the clamping surface of the three chuck claws 3 at the inner-shaped holes, and the inner-shaped holes are provided with expansion and contraction grooves along the vertical axis and at the upper half opening;
secondly, a large and a small lightening hole are formed in the middle of the disc, a guide hole with threads is horizontally formed in the expansion and contraction groove, and a small threaded hole is formed in the bottom of the hole;
the eccentric jacket main body 1 is connected inside the clamping chuck 7 in an assembling way, three chuck three claws 3 are arranged inside the clamping chuck 7, and a clamped workpiece 4 is arranged between the bottom of the eccentric jacket main body 1 and one chuck three claw 3;
wherein, the clamping circle of the three jaws of the inner-shaped hole is set to be the maximum value of the clamped excircle of the clamped workpiece 4 due to the influence of the design structure of the eccentric jacket main body 1 and the excircle tolerance of the clamped workpiece 4, the eccentric distance position also has small change, and the pre-working procedure coarse reference positioning work can be applied;
meanwhile, when the device is used for the precise reference positioning of a post-process, because the requirement of the eccentricity e is required to be ensured, when the clamped excircle of the clamped workpiece 4 is the minimum, the eccentricity e error is in an increasing trend due to the reduction of the radius of the clamped excircle of the workpiece, but is in a decreasing trend due to the reduction of the radius of the clamped excircle of the clamped workpiece 4, the three claws of the chuck for clamping the three-claw eccentric jacket-1 are also reduced, and the eccentricity e error is in a decreasing trend, so that the two errors can be offset positively and negatively, thereby being convenient for reducing the error range; and the tolerance of the eccentricity e can be controlled according to the calculation of the outer circle radius of the clamped workpiece, the outer circle radius of the three-jaw eccentric jacket-1, the eccentricity e and the thin wall thickness of the elastic deformation joint, so as to meet the requirement of ensuring the eccentricity e.
By adopting the technical scheme:
according to the design, the eccentric jacket main body 1 is used as a transitional jacket, after the eccentric jacket main body 1 is matched with the clamping chuck 7, one end of the clamped workpiece 4 can be clamped by the clamping chuck 7, so that the function of a four-jaw chuck is replaced, the clamping work of cylindrical workpieces and irregular workpieces can be met, the practicability is higher, and the characteristic that the existing three-jaw chuck is easy to operate is reserved.
Examples
Based on the embodiment 1, the specific structures of the locking mechanism 2 and the clamping chuck 7 are described, and a guide hole 24 is formed at the movable end of the top of the eccentric jacket main body 1;
the guide sleeve 23 is connected inside the guide hole 24 in a plug-in mode, the guide sleeve 23 is cylindrical, an external thread is machined at the right end of the outer circle, a screw hole is machined at the right end face, a deep hole for placing a spring is formed at the left end, one end of the limit screw 21 is connected with the eccentric jacket main body 1 in a threaded mode, and the degree of expansion of left and right flaps of the eccentric jacket main body 1 can be controlled by controlling the threaded connection condition;
meanwhile, the right end of the guide sleeve 23 is connected with the right valve of the eccentric jacket main body 1 into a whole by threads, and the outer circle of the left end of the guide sleeve 23 is in movable fit with the left valve guide hole 24 of the eccentric jacket main body 1, so that the left valve and the right valve of the eccentric jacket main body 1 are guided to open or close, and the whole rigidity clamp is increased and is not deformed;
secondly, a spring 22 is connected inside the guide sleeve 23 in a sleeved mode, the spring 22 plays a role of expanding left and right petals of the three-jaw eccentric jacket-1, but clamping force is not easy to be excessively large due to the principle of large round clamp and small round lever, a limit screw 21 is movably connected inside the limit screw 21, one end of the spring 22 is in contact connection with the inner wall of the guide sleeve 23, and the other end of the spring 22 is in contact connection with the eccentric jacket main body 1;
in some examples, one side of the three-jaw chuck 3, which is close to the center of the cross section of the clamping chuck 7, is fixedly connected with a thin-wall elastic deformation joint 6, and the surface of the thin-wall elastic deformation joint 6 is in contact connection with the outer wall of the clamped workpiece 4.
Wherein, the thin-wall elastic deformation joint 6 is internally provided with a centering mark line 5, and the workpiece 4 to be clamped can be aligned and positioned in the assembly process by means of the centering mark line 5.
The specific operation steps are as follows:
s1, a spring 22 is arranged in a hole at the left end of a guide sleeve 23 and screwed into a thread of a guide hole 24 together, and a mutual compressed vacancy distance is reserved between the left end surface of the guide sleeve 23 and the bottom surface of the guide hole;
s2, the limit screw 21 penetrates through the inner hole of the guide sleeve-2 and the spring, and is screwed into the threaded hole at the bottom surface of the guide hole 24, and an open limit distance is reserved between the left end surface of the limit screw 21 and the right end surface of the guide sleeve 23. At this time, the two halves of the half opening of the three jaws 3 of the chuck are opened, the inner shape Kong Sanzhao is opened along with the opening, and the clamped workpiece 4 is arranged in the inner shape hole of the clamping chuck 7;
s3, placing the eccentric jacket main body 1 and the clamping chuck 7 which finish the installation work in a three-jaw chuck jaw of a machine tool, installing the eccentric jacket main body 1 to the thin-wall elastic deformation joint 6 and finishing the preliminary positioning work with one chuck jaw, so that the assembly rigidity of the clamp is increased, and the stress is symmetrical when the clamped workpiece 4 is clamped;
s4, the clamped workpiece 4 is arranged between three claws of the inner-shaped hole, the alignment and positioning are carried out according to the alignment mark line 5, the clamping chuck 7 is fixed on the machine tool by using the chuck spanner, the three claws 3 of the clamping chuck clamp the outer circle of the eccentric clamping sleeve main body 1, the left and right two halves of the eccentric clamping sleeve main body 1 are folded along the guide sleeve 23, so that the inner shape Kong Sanzhao of the three claws 3 of the clamping chuck clamp the outer circle of the clamped workpiece 4, and the clamping function is realized.
By adopting the technical scheme:
according to the design, the eccentric jacket main body 1 is matched with the clamping chuck 7, so that the eccentric jacket main body 1 is used as a fitting of the clamping chuck 7, when one end of the eccentric jacket main body 1 is matched with the clamping chuck 7 and the other end of the eccentric jacket main body is matched with the clamped workpiece 4, the corresponding clamped workpiece 4 can be clamped according to different shapes of the workpiece, a processing technology method for simplifying is realized, the application range of multiple workpieces is enlarged, and the product quality and the production efficiency are further improved;
when the clamping chuck 7 and the eccentric jacket main body 1 clamp eccentric parts in the high-voltage switch equipment, the turning procedure is used for positioning and processing the sizes of all parts of the right end by the excircle of the left end, and the three-jaw chuck cannot be used for processing because of the eccentricity e at the left end and the right end, and can only be used for repeatedly aligning, positioning and clamping by the four-jaw chuck, so that the machining quality of the parts is low. After the utility model is adopted, the clamped workpiece 4 is directly clamped by the clamping chuck 7, the installation, the clamping and the positioning are simple and convenient, the clamped workpiece 4 does not need to be aligned, only the alignment mark line 5 needs to be aligned, and the processing quality and the processing efficiency of the workpiece are greatly improved.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present utility model and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (6)
1. The three-jaw eccentric jacket is characterized by comprising:
the eccentric jacket comprises an eccentric jacket main body (1) which consists of a left valve and a right valve, wherein a locking mechanism (2) is arranged at the top of the eccentric jacket main body (1), the locking mechanism (2) comprises a limit screw (21), and a guide sleeve (23) is connected to the outside of the limit screw (21) in a sleeved mode;
the eccentric clamping sleeve comprises a clamping chuck (7), wherein the eccentric clamping sleeve body (1) is connected inside the clamping chuck (7) in an assembling mode, and three clamping chuck three-jaw (3) are arranged inside the clamping chuck (7).
2. The three jaw eccentric collet of claim 1 wherein: the eccentric jacket is characterized in that a guide hole (24) is formed in the movable end of the top of the eccentric jacket main body (1), the guide sleeve (23) is connected in the guide hole (24) in a plug-in mode, and one end of the limit screw (21) is connected with the eccentric jacket main body (1) in a threaded mode.
3. The three jaw eccentric collet of claim 1 wherein: the inside cup joint of uide bushing (23) is connected with spring (22), stop screw (21) movable connection is in the inside of stop screw (21), the one end of spring (22) is connected with the inner wall contact of uide bushing (23), the other end of spring (22) is connected with eccentric clamp sleeve main part (1) contact.
4. The three jaw eccentric collet of claim 1 wherein: the eccentric clamping sleeve is characterized in that weight reducing holes are formed in the two sides of the eccentric clamping sleeve body (1), and a clamped workpiece (4) is arranged between the bottom of the eccentric clamping sleeve body (1) and one chuck three-jaw (3).
5. The three jaw eccentric collet of claim 4 wherein: one side of the three claws (3) of the chuck, which is close to the center of the cross section of the clamping chuck (7), is fixedly connected with a thin-wall elastic deformation joint (6), and the surface of the thin-wall elastic deformation joint (6) is in contact connection with the outer wall of the clamped workpiece (4).
6. The three jaw eccentric collet of claim 5 wherein: the thin-wall elastic deformation joint (6) is internally provided with a centering mark line (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321089372.7U CN219852179U (en) | 2023-05-09 | 2023-05-09 | Three-jaw eccentric jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321089372.7U CN219852179U (en) | 2023-05-09 | 2023-05-09 | Three-jaw eccentric jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219852179U true CN219852179U (en) | 2023-10-20 |
Family
ID=88331789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321089372.7U Active CN219852179U (en) | 2023-05-09 | 2023-05-09 | Three-jaw eccentric jacket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219852179U (en) |
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2023
- 2023-05-09 CN CN202321089372.7U patent/CN219852179U/en active Active
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