CN220127613U - Eccentric workpiece turning tool - Google Patents
Eccentric workpiece turning tool Download PDFInfo
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- CN220127613U CN220127613U CN202321109634.1U CN202321109634U CN220127613U CN 220127613 U CN220127613 U CN 220127613U CN 202321109634 U CN202321109634 U CN 202321109634U CN 220127613 U CN220127613 U CN 220127613U
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- disc
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- expansion sleeve
- positioning
- internal thread
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- 238000007514 turning Methods 0.000 title claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 229910003460 diamond Inorganic materials 0.000 claims description 14
- 239000010432 diamond Substances 0.000 claims description 14
- 238000003754 machining Methods 0.000 abstract description 11
- 230000009977 dual effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The utility model discloses an eccentric workpiece turning tool which comprises a machining disc and a fixing mechanism, wherein a workpiece is detachably arranged above the machining disc; the fixing mechanism is detachably arranged on the processing disc and is used for fixing and limiting a workpiece; the fixing mechanism comprises a cylindrical internal thread expansion sleeve positioning disk, a round gasket and a tensioning screw, wherein the cylindrical internal thread expansion sleeve positioning disk is matched with the processing disk, the round gasket is matched with the cylindrical internal thread expansion sleeve positioning disk, and the tensioning screw is used for fixing a workpiece. The eccentric workpiece turning tool adopts the positioning structure of the plane-cylindrical internal thread expansion sleeve, eliminates the gap for positioning the workpiece hole, realizes zero-error positioning without gaps, solves the defects of the classical plane-shaft tool, has the high-precision positioning function of the plane-cylindrical internal thread expansion sleeve, effectively meets the technical requirement of high-precision workpiece positioning, has the dual functions of special tensioning and thread dismounting of the cylindrical internal thread expansion sleeve, and is convenient for loading and unloading workpieces.
Description
Technical Field
The utility model relates to the technical field of workpiece machining, in particular to an eccentric workpiece turning tool.
Background
In the machining industry, a plurality of tools for positioning inner holes of workpieces are used, wherein a classical plane-axis positioning tool structure is commonly used, and the requirements of a machining process can be met. If the machining tolerance range of the workpiece hole is large and the tolerance range of the position degree is small, the situation that the position degree is out of tolerance occurs due to the fact that the gap is too large when the classical plane-axis positioning tool is used for clamping, and therefore the workpiece is positioned unreliably or out of tolerance, and the machining quality and technical requirements of the workpiece are difficult to guarantee.
The existing solution is that the workpieces are grouped, the positioning shafts are selected for machining, and the machining tolerance range of the holes is shortened in advance to ensure the fit clearance between the workpieces and the positioning shafts, so that the problems of difficult installation and increased cost caused by too small clearance are also brought.
The eccentric part is arranged in the high-voltage switch equipment, the turning process is required to be positioned by a left end face and a hole, the sizes of all parts at the right end are processed, the processed hole size tolerance range is relatively large due to the small eccentricity tolerance range, the situation that the eccentricity is out of tolerance is positioned by a plane-axis tool, and the requirement of the part processing quality is not met.
Disclosure of Invention
The utility model mainly aims to provide an eccentric workpiece turning tool which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the eccentric workpiece turning tool comprises a processing disc and a fixing mechanism, wherein a workpiece can be detachably arranged above the processing disc; the fixing mechanism is detachably arranged on the processing disc and is used for fixing and limiting a workpiece; wherein, the upper end face of the processing disc is provided with an eccentric hole; the fixing mechanism comprises a cylindrical internal thread expansion sleeve positioning disc, a round gasket and a tensioning screw, wherein the cylindrical internal thread expansion sleeve positioning disc is matched with the processing disc, the round gasket is matched with the cylindrical internal thread expansion sleeve positioning disc, the tensioning screw is used for fixing a workpiece, and the workpiece can be in fit connection with the cylindrical internal thread expansion sleeve positioning disc.
Preferably, the fixing mechanism further comprises a counterweight disc detachably arranged on one side of the processing disc and a fastening bolt for fixing the counterweight disc on the processing disc, and the processing disc is provided with a bolt hole matched with the fastening bolt.
Preferably, the cylindrical internal thread expansion sleeve positioning disc is arranged in a disc shape, and a plurality of groups of first screws fixed with the processing disc are symmetrically arranged on the cylindrical internal thread expansion sleeve positioning disc.
Preferably, the upper end surface of the cylindrical internal thread expansion sleeve positioning disk is provided with a positioning expansion sleeve matched with the workpiece, and the lower end surface of the cylindrical internal thread expansion sleeve positioning disk is provided with a positioning boss corresponding to the eccentric hole.
Preferably, diamond pins matched with the processing disc are arranged on the workpiece and the cylindrical internal thread expansion sleeve positioning disc, and pin holes matched with the diamond pins are formed in the cylindrical internal thread expansion sleeve positioning disc.
Preferably, the round gasket is provided with a threaded hole matched with the tensioning screw, the round gasket is arranged on the inner bottom surface of the workpiece, the tensioning screw penetrates through the first threaded hole and is fixed on the positioning tensioning sleeve, and the lower end surface of the workpiece is provided with a positioning hole matched with the positioning tensioning sleeve.
Preferably, the processing disc is provided with a plurality of groups of second screws for limiting, and the plurality of groups of second screws are symmetrically arranged on the processing disc.
Preferably, the bolt hole and the eccentric hole are both arranged on the center line of the processing disc.
Compared with the prior art, the utility model has the following beneficial effects:
through the processing disc and the fixed establishment that set up, adopt the location structure of "plane-cylinder internal screw thread cover that rises", eliminated the clearance of work piece hole location, realized zero error location of zero clearance, solved the defect that above-mentioned classical "plane-axle" frock exists, and "plane-cylinder internal screw thread cover that rises" high accuracy locate function, effectively satisfied the technical requirement of high accuracy work piece location, cylinder internal screw thread cover specific can rise tightly and screw thread detachable dual function, also made things convenient for the loading and unloading of work piece, make things convenient for people to use, increased the suitability of whole frock.
Drawings
FIG. 1 is an overall structure diagram of an eccentric workpiece turning tool of the present utility model;
FIG. 2 is an exploded view of a tooling disc and securing mechanism in an eccentric workpiece turning tool of the present utility model;
FIG. 3 is a partial block diagram of a processing disc and securing mechanism in an eccentric workpiece turning tool of the present utility model;
FIG. 4 is a top view of a workpiece and a processing disk in an eccentric workpiece turning tool according to the present utility model;
fig. 5 is an exploded view of a machining disc and workpiece in an eccentric workpiece turning tool of the present utility model.
In the figure: 1. processing a disc; 2. a workpiece; 3. an eccentric hole; 4. cylindrical internal thread expansion sleeve positioning disk; 5. a round gasket; 6. tensioning a screw; 7. a weight plate; 8. a fastening bolt; 9. positioning an expansion sleeve; 10. positioning the boss; 11. a first screw; 12. diamond pins; 13. a pin hole; 14. and a second screw.
Description of the embodiments
The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
Referring to fig. 1-5, an eccentric workpiece turning tool comprises a processing disc 1 and a fixing mechanism, wherein a workpiece 2 is detachably arranged above the processing disc 1; the fixing mechanism is detachably arranged on the processing disc 1 and is used for fixing and limiting the workpiece 2; wherein, the upper end surface of the processing disc 1 is provided with an eccentric hole 3; the fixing mechanism comprises a cylindrical internal thread expansion sleeve positioning disk 4 which is matched with the processing disk 1, a round gasket 5 which is matched with the cylindrical internal thread expansion sleeve positioning disk 4, and an expansion screw 6 which is used for fixing the workpiece 2, wherein the workpiece 2 can be in fit connection with the cylindrical internal thread expansion sleeve positioning disk 4.
The processing disc 1 is detachably mounted on a lathe spindle.
The fixing mechanism further comprises a counterweight disc 7 detachably arranged on one side of the processing disc 1 and a fastening bolt 8 for fixing the counterweight disc 7 on the processing disc 1, and bolt holes matched with the fastening bolt 8 are formed in the processing disc 1.
The cylindrical internal thread expansion sleeve positioning disk 4 is arranged in a disk shape, and a plurality of groups of first screws 11 fixed with the processing disk 1 are symmetrically arranged on the cylindrical internal thread expansion sleeve positioning disk 4.
The upper end face of the cylindrical internal thread expansion sleeve positioning disk 4 is provided with a positioning expansion sleeve 9 matched with the workpiece 2, and the lower end face of the cylindrical internal thread expansion sleeve positioning disk 4 is provided with a positioning boss 10 corresponding to the eccentric hole 3.
The positioning expansion sleeve 9 is a common thread and a hollow cutter groove with a round angle, which widens the bottom of the deepening groove, the root of the excircle of the expansion sleeve is provided with a groove and a circular arc hollow cutter groove, a proper thin wall and a transition round angle are formed between the two hollow cutter grooves, the positioning expansion sleeve is a deformation joint of the four-petal expansion sleeve, and when the expansion screw 6 is tensioned, the outer diameter of the four-petal expansion sleeve is expanded to generate elastic deformation, and the positioning effect of unchanged centering position can be maintained.
The workpiece 2 and the cylindrical internal thread expansion sleeve positioning disk 4 are respectively provided with a diamond pin 12 matched with the processing disk 1, and the cylindrical internal thread expansion sleeve positioning disk 4 is provided with a pin hole 13 matched with the diamond pin 12.
One end of the diamond pin 12 is a cylindrical pin, the other end of the diamond pin is in a diamond pin structure, and the diamond pin 12 is used for eliminating the over-positioning condition of two holes during positioning.
The round gasket 5 is provided with a threaded hole matched with the tensioning screw 6, the round gasket 5 is arranged on the inner bottom surface of the workpiece 2, the tensioning screw 6 penetrates through the first threaded hole and is fixed on the positioning tensioning sleeve 9, and the lower end surface of the workpiece 2 is provided with a positioning hole matched with the positioning tensioning sleeve 9.
The processing disc 1 is provided with a plurality of groups of second screws 14 used for limiting, and the plurality of groups of second screws 14 are symmetrically arranged on the processing disc 1.
The bolt hole and the eccentric hole 3 are both provided on the center line of the processing disc 1.
It should be noted that the utility model relates to an eccentric workpiece turning tool, and when in use:
during assembly, the positioning boss 10 on the cylindrical internal thread expansion sleeve positioning disc 4 is arranged in the eccentric hole 3 on the right end face of the processing disc 1, the cylindrical pin of the diamond pin 12 is arranged in the pin hole 13, the cylindrical internal thread expansion sleeve positioning disc 4 is fixed on the processing disc 1, the diamond pin 12 is transversely arranged to restrict the freedom degree of the rotation direction of the workpiece 2, the positioning boss 10 is connected to the threaded hole of the processing disc 1 by the first screw 11 and fixed, and the positioning boss 10 of the processing disc 1 is positioned and arranged on the receiving disc of the lathe spindle during the use of the fixture and fastened by the six second screws 14.
During turning, the workpiece 2 is mounted on the positioning expansion sleeve 9, the angular position is fixed by matching with the diamond pin 12, the workpiece 2 is compressed by the expansion screw 6 and the round gasket 5, the outer circle of the cylindrical internal thread expansion sleeve is also pulled and expanded by the expansion screw 6, the inner hole of the workpiece 2 is expanded, and zero error of gapless hole positioning is realized.
Positioning structure principle of plane-cylindrical internal thread expansion sleeve:
the right end face of the processing disc 1 is provided with a cylindrical four-lobe internal thread expansion sleeve structure, the spiral conical surface formed by the inclined surface on one side of the external thread profile is utilized, axial displacement is generated during rotation, the fixed spiral conical surface contacted by the internal thread profile is radially expanded, the principle function is the same as that of the conical expansion sleeve, and the expression forms of the two conical surfaces are different. When the workpiece 2 is mounted on the outer circle of the four-lobe internal thread expansion sleeve by the end face and is screwed up by the expansion screw 6 and the round gasket 5, the spiral conical surface of the external thread also axially displaces, and then the fixed spiral conical surface of the internal thread is pressed and expanded, so that the outer circle of the four-lobe internal thread expansion sleeve expands the inner hole of the workpiece 2, and the combined function of pressing the workpiece 2 and eliminating the gap of the positioning hole is achieved. The standard thread matching structure is adopted, and the method has the advantages of mature technology, process, cutter and processing machine tool, and simple and easy manufacture. When the four-petal internal thread expansion sleeve is stressed and elastically deformed slightly and the inner hole of the workpiece is expanded, the four-petal internal thread expansion sleeve and the workpiece form a fixed nut structure form, so that the original functions of the thread matching structure are maintained.
The positioning structure of the plane-cylindrical internal thread expansion sleeve fully maintains the original functional effect of the thread matching structure, realizes the two functions of expanding and compressing the workpiece 2 by utilizing radial deformation generated by the stress of the thread inclined plane, and is a general tool fixture device with convenient use and high precision for machining
Through the processing disc 1 and the fixed establishment that set up, adopt the location structure of "plane-cylinder internal screw thread cover that rises", eliminated the clearance of work piece hole location, realized zero error location of zero clearance, solved the not enough that above-mentioned classical "plane-axle" frock exists, and "plane-cylinder internal screw thread cover that rises" high accuracy locate function, effectively satisfied the technical requirement of high accuracy work piece location, cylinder internal screw thread cover specific can rise tightly and screw thread detachable dual function, also made things convenient for the loading and unloading of work piece, make things convenient for people to use, increased the suitability of whole frock.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. An eccentric workpiece turning tool, comprising:
a processing disc (1) with a workpiece (2) detachably arranged above;
the fixing mechanism is detachably arranged on the processing disc (1) and is used for fixing and limiting the workpiece (2);
wherein, the upper end surface of the processing disc (1) is provided with an eccentric hole (3);
the fixing mechanism comprises a cylindrical internal thread expansion sleeve positioning disc (4) matched with the processing disc (1), a round gasket (5) matched with the cylindrical internal thread expansion sleeve positioning disc (4) and a tension screw (6) for fixing the workpiece (2), and the workpiece (2) can be connected with the cylindrical internal thread expansion sleeve positioning disc (4) in a fitting mode.
2. The eccentric workpiece turning fixture as claimed in claim 1, wherein: the fixing mechanism further comprises a counterweight disc (7) detachably arranged on one side of the processing disc (1) and a fastening bolt (8) for fixing the counterweight disc (7) on the processing disc (1), and bolt holes matched with the fastening bolt (8) are formed in the processing disc (1).
3. The eccentric workpiece turning fixture as claimed in claim 2, wherein: the cylindrical internal thread expansion sleeve positioning disc (4) is arranged in a disc shape, and a plurality of groups of first screws (11) fixed with the processing disc (1) are symmetrically arranged on the cylindrical internal thread expansion sleeve positioning disc (4).
4. An eccentric workpiece turning fixture as claimed in claim 3, wherein: the upper end face of the cylindrical internal thread expansion sleeve positioning disc (4) is provided with a positioning expansion sleeve (9) matched with the workpiece (2), and the lower end face of the cylindrical internal thread expansion sleeve positioning disc (4) is provided with a positioning boss (10) corresponding to the eccentric hole (3).
5. The eccentric workpiece turning fixture as claimed in claim 2, wherein: the workpiece (2) and the cylindrical internal thread expansion sleeve positioning disc (4) are respectively provided with a diamond pin (12) matched with the processing disc (1), and the cylindrical internal thread expansion sleeve positioning disc (4) is provided with a pin hole (13) matched with the diamond pin (12).
6. The eccentric workpiece turning fixture as recited in claim 5, wherein: the automatic tensioning device is characterized in that a threaded hole matched with the tensioning screw (6) is formed in the round gasket (5), the round gasket (5) is arranged on the inner bottom surface of the workpiece (2), the tensioning screw (6) penetrates through the first threaded hole and is fixed on the positioning tensioning sleeve (9), and a positioning hole matched with the positioning tensioning sleeve (9) is formed in the lower end face of the workpiece (2).
7. The eccentric workpiece turning fixture as claimed in claim 1, wherein: a plurality of groups of second screws (14) used for limiting are arranged on the processing disc (1), and the groups of second screws (14) are symmetrically arranged on the processing disc (1).
8. The eccentric workpiece turning fixture as claimed in claim 2, wherein: the bolt holes and the eccentric holes (3) are all arranged on the central line of the processing disc (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321109634.1U CN220127613U (en) | 2023-05-10 | 2023-05-10 | Eccentric workpiece turning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321109634.1U CN220127613U (en) | 2023-05-10 | 2023-05-10 | Eccentric workpiece turning tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220127613U true CN220127613U (en) | 2023-12-05 |
Family
ID=88948038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321109634.1U Active CN220127613U (en) | 2023-05-10 | 2023-05-10 | Eccentric workpiece turning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220127613U (en) |
-
2023
- 2023-05-10 CN CN202321109634.1U patent/CN220127613U/en active Active
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