CN211009471U - Assembled eccentric positioning pin assembly - Google Patents
Assembled eccentric positioning pin assembly Download PDFInfo
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- CN211009471U CN211009471U CN201921877476.8U CN201921877476U CN211009471U CN 211009471 U CN211009471 U CN 211009471U CN 201921877476 U CN201921877476 U CN 201921877476U CN 211009471 U CN211009471 U CN 211009471U
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- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 230000008901 benefit Effects 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
- 230000008569 process Effects 0.000 description 2
- 230000033764 rhythmic process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000000465 moulding Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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Abstract
The utility model discloses an assembled eccentric locating pin assembly, which comprises an eccentric pin seat, a locating column and a locating pin; the large-diameter positioning part and the small-diameter limiting part are coaxial and are both cylinders; a first pin hole for inserting the positioning pin is formed in the eccentric pin seat, an orifice at one end of the first pin hole is flush with the end face, far away from the small-diameter limiting part, of the large-diameter positioning part, and the first pin hole is in sliding fit with the positioning pin along the axial direction; a positioning hole is formed in the large-diameter positioning part of the eccentric pin boss and is in sliding fit with the positioning column along the axial direction; the rotary axis of the first pin hole, the rotary axis of the positioning hole and the rotary axis of the eccentric pin seat are parallel to each other but do not coincide with each other. This eccentric locating pin subassembly easy dismounting, once fixed position installation back on the anchor clamps base, can realize the fixed position of locating pin through the mode of changing eccentric seat and change in the small scale, and positioning accuracy is high moreover, effectively satisfies the location requirement of the part that the small batch shape is close.
Description
Technical Field
The utility model belongs to the technical field of machining equipment, concretely relates to assembled eccentric locating pin subassembly.
Background
The locating pin is comparatively common in current machining field, and its theory of operation generally sets up the pinhole on the anchor clamps base, then will process the fixed cartridge of locating pin good in advance in the pinhole, utilizes the locating pin to fix a position the part of treating processing. However, as a result, once the shape of the part to be machined changes, the insertion position of the positioning pin on the fixture base changes, and the pin hole needs to be newly formed in the fixture base. Since the fixture base is generally provided with a large number of other fixing components, it is very troublesome to newly form the pin holes, which requires a lot of time and a large cost.
If the produced parts are large in batch, the tool cannot be replaced again. However, if the demand of new parts is small, such as small batches of parts with similar shapes, the change of the fixed position of the positioning pin is small, the adjustment distance of the center distance of the positioning pin is even smaller than the center distance of two adjacent pin holes, the pin holes are newly formed, so that the pin holes formed in the front and the back are overlapped and interfered with each other, the installation requirement of the positioning pin cannot be met, and the cost is too high when a set of new tool clamp base is specially manufactured.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an assembled eccentric locating pin subassembly is provided, this eccentric locating pin subassembly easy dismounting, fixed position installation back on the anchor clamps base, the fixed position that can realize the locating pin through the mode of changing the eccentric seat changes at the small range, and positioning accuracy is high moreover, effectively satisfies the location requirement of the close part of small batch size shape.
The technical scheme of the utility model as follows: the assembly type eccentric positioning pin assembly comprises an eccentric pin seat, a positioning column and a positioning pin; the eccentric pin boss is formed by integrally forming a large-diameter positioning part and a small-diameter limiting part; the large-diameter positioning part and the small-diameter limiting part are coaxial and are cylinders, and the small-diameter limiting part can be in sliding fit with an original second pin hole in the clamp base body along the axial direction;
a first pin hole for inserting the positioning pin is formed in the eccentric pin seat, an orifice at one end of the first pin hole is flush with the end face, far away from the small-diameter limiting part, of the large-diameter positioning part, and the first pin hole is in sliding fit with the positioning pin along the axial direction; a positioning hole is formed in the large-diameter positioning part of the eccentric pin boss and is a through hole, and the positioning hole is in sliding fit with the positioning column along the axial direction; the rotary axis of the first pin hole, the rotary axis of the positioning hole and the rotary axis of the eccentric pin seat are parallel to each other but do not coincide with each other.
Further: the positioning pin is a diamond pin, and the head of the diamond pin is provided with an inward concave plane; the small-diameter limiting part of the eccentric pin seat is radially provided with a threaded hole which penetrates through the first pin hole to the outside of the eccentric pin seat.
Further: three locking holes are formed in the large-diameter positioning portion of the eccentric pin boss along the circumferential direction, all the locking holes are through holes, and the three locking holes and one positioning hole are uniformly distributed along the circumferential direction of the eccentric pin boss.
The beneficial effect of this scheme: the utility model discloses an assembled eccentric locating pin subassembly, this assembled eccentric locating pin subassembly have adopted the assembled structure that does benefit to the dismantlement very much to quick completion equipment. The operating principle of the assembly type eccentric positioning pin assembly is that the second pin hole on the original clamp base is utilized, meanwhile, the eccentric pin base is eccentrically positioned through the positioning column and the small-diameter limiting part, and the purpose of changing the position of the positioning pin on the original distance base is achieved on the eccentric pin base so as to adapt to positioning of parts in different shapes. The positioning accuracy of the parts is ensured by the eccentric pin seat and the positioning column.
Therefore, the assembled eccentric positioning pin assembly in the scheme has the following advantages: 1. the positioning precision is high; 2. the installation and the disassembly are convenient, and the operation is convenient; 3. the adjustment is flexible, the plane position of the positioning pin on the original clamp base can be adjusted by processing and replacing the specifications of the eccentric pin seat or the positioning pin, the change of the production rhythm is quickly adapted, and the quick switching of different products is met; 4. the original clamp base is slightly changed, and the requirement can be met only by processing a limiting hole on the original clamp base; 5. significant economies can be realized with less machined part requirements.
Drawings
FIG. 1 is a schematic view of the assembly of the cylindrical pin of the present invention;
FIG. 2 is an assembly view of the diamond pin of the present invention;
fig. 3 is a schematic structural view of the eccentric pin boss of the present invention;
FIG. 4 is a schematic structural view of the cylindrical pin of the present invention;
FIG. 5 is a schematic structural view of a diamond pin according to the present invention;
fig. 6 is a schematic structural view of the middle positioning column of the present invention.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the present invention discloses an assembled eccentric positioning pin assembly, which includes an eccentric pin seat 2, a positioning column 4 and a positioning pin. The eccentric pin boss 2 is formed by coaxially and integrally molding a cylindrical large-diameter positioning part 21 and a cylindrical small-diameter limiting part 22. The eccentric pin base 2 is provided with a first pin hole 26, and an orifice at one end of the first pin hole 26 is flush with the end surface of the large-diameter positioning part 21 far away from the small-diameter limiting part 22. The first pin bore 26 is parallel to but not coincident with the axis of rotation of the eccentric pin holder 2. The eccentric pin boss 2 is further provided with a positioning hole 25, the rotation axis of the positioning hole 25 is parallel to but not coincident with the rotation axis of the first pin hole 26, the positioning hole 25 can be used for inserting the positioning column 4, and after the positioning column 4 is inserted into the positioning hole 25 along the axial direction of the positioning hole 25, the outer surface of the positioning column 4 is in close contact with the hole wall of the positioning hole 25 and is in sliding fit with the hole wall of the positioning hole 25.
The small-diameter limiting part 22 of the eccentric pin boss 2 is inserted into the original second pin hole 32 of the clamp base 3 along the axial direction, and the eccentric pin boss 2 is in up-and-down sliding fit with the original second pin hole 32 of the clamp base 3. Therefore, the eccentric pin boss 2 is radially restricted by the existing second pin hole 32, and at this time, the eccentric pin boss 2 can also rotate in the second pin hole 32. At this time, the positioning post 4 can be axially inserted into the positioning hole 25 of the large-diameter positioning portion 21, and a limiting hole 31 is further formed in the fixture base 3. The positioning post 4 penetrates through the positioning hole 25 and then is inserted into the limiting hole 31, and the limiting hole 31 and the positioning post 4 are also in sliding fit in the axial direction. Under the restriction of the small diameter limiting part 22 of the eccentric pin boss 2 and the positioning column 4, the eccentric pin boss 2 is positioned and limited on the plane of the jig base 3. The positioning pin is inserted into the first pin hole 26 of the eccentric pin base 2, and the positioning pin is repositioned and limited on the plane of the clamp base 3. In the above process, the end surface of the large diameter positioning portion 21 of the eccentric pin boss 2 near the small diameter stopper portion 22 is preferably in planar contact with the jig base 3, but may not be in contact with the jig base.
The eccentric pin boss 2 is rapidly inserted into the clamp base 3 through the small-diameter limiting part 22 and the positioning column 4, so that the eccentric pin boss is convenient to detach and replace to adapt to different production rhythms. When the positioning position of the positioning pin needs to be adjusted, only one eccentric pin boss 2 needs to be machined again and the original eccentric pin boss 2 needs to be replaced quickly, so that the operation is simple, and the device is economical and practical. In the scheme, the positioning pin is connected with the eccentric pin seat 2 in an inserting manner, so that the head of the positioning pin in the scheme is smaller than the tail, the head of the positioning pin is a part inserted into the first pin hole 26, and the tail of the positioning pin is a part correspondingly matched and positioned with a part.
In actual practice, the locating pins are generally two types of structures, namely, cylindrical pins 11 as shown in fig. 4 and diamond-shaped pins 12 as shown in fig. 5. When the diamond-shaped pin 12 is used, not only the X axis and the Y axis of the part need to be limited, but also the Z axis of the part needs to be limited by the diamond-shaped pin 12. For this purpose, as shown in fig. 5, the head of the diamond-shaped pin 12 is formed with a concave plane 121, and the small-diameter stopper 22 of the eccentric pin holder 2 is formed with a threaded hole 23 along the radial direction, wherein the threaded hole 23 extends from the first pin hole 26 to the outside of the eccentric pin holder 2. When the diamond-shaped pin 12 is installed, the concave plane 121 of the head of the diamond-shaped pin 12 is perpendicular to and aligned with the threaded hole 23, then a set screw 6 is screwed into the threaded hole 23, the diamond-shaped pin 12 is limited by the set screw 6, and the diamond-shaped pin 12 is limited to rotate in the first pin hole 26, namely, the Z-axis displacement of the diamond-shaped pin 12 is limited by the set screw 6. Of course, the set screw 6 is not necessarily used for the diamond-shaped pin 12, and when the cylindrical pin 11 needs to be restricted in the Z-axis direction, the same restricting structure as the diamond-shaped pin 12 may be used.
For the eccentric pin boss 2, if frequent replacement is not required, the eccentric pin boss 2 may be fixed to the jig base 3. Three locking holes 24 are formed in the large-diameter positioning portion 21 of the eccentric pin boss 2 along the circumferential direction, the three locking holes 24 and one positioning hole 25 are uniformly distributed along the circumferential direction of the eccentric pin boss 2, then one locking screw 5 is inserted into each locking hole 24, and a corresponding connecting hole is drilled in the clamp base 3 through tapping. After the eccentric pin boss 2 is set in position, the eccentric pin boss 2 can be locked to the jig base 3 by the locking screw 5. It should be noted that the locking screw 5 is not used for positioning the eccentric pin boss 2, and the positioning of the eccentric pin boss 2 must depend on the common limit cooperation between the positioning hole 25 and the small-diameter limit portion 22 to achieve the required positioning accuracy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. Assembled eccentric dowel subassembly, its characterized in that: comprises an eccentric pin seat (2), a positioning column (4) and a positioning pin; the eccentric pin seat (2) is formed by a large-diameter positioning part (21) and a small-diameter limiting part (22) in an integrated mode; the large-diameter positioning part (21) and the small-diameter limiting part (22) are coaxial and are cylinders, and the small-diameter limiting part (22) can be in sliding fit with an original second pin hole (32) in the clamp base (3) along the axial direction;
a first pin hole (26) for inserting the positioning pin is formed in the eccentric pin seat (2), an orifice at one end of the first pin hole (26) is flush with the end face, far away from the small-diameter limiting part (22), of the large-diameter positioning part (21), and the first pin hole (26) can be in sliding fit with the positioning pin along the axial direction; a positioning hole (25) is formed in the large-diameter positioning part (21), the positioning hole (25) is a through hole, and the positioning hole (25) can be in sliding fit with the positioning column (4) along the axial direction; the rotation axis of the first pin hole (26), the rotation axis of the positioning hole (25) and the rotation axis of the eccentric pin seat (2) are parallel to each other but do not coincide with each other.
2. The fabricated eccentric dowel assembly of claim 1, wherein: the positioning pin is a diamond-shaped pin (12), and the head of the diamond-shaped pin (12) is provided with an inner concave plane (121); the small-diameter limiting part (22) of the eccentric pin seat (2) is radially provided with a threaded hole (23), and the threaded hole (23) penetrates through the first pin hole (26) to the outside of the eccentric pin seat (2).
3. The fabricated eccentric dowel assembly of claim 2, wherein: three locking holes (24) are formed in the large-diameter positioning portion (21) of the eccentric pin boss (2) along the circumferential direction, all the locking holes (24) are through holes, and the three locking holes (24) and one positioning hole (25) are uniformly distributed along the circumferential direction of the eccentric pin boss (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877476.8U CN211009471U (en) | 2019-11-01 | 2019-11-01 | Assembled eccentric positioning pin assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921877476.8U CN211009471U (en) | 2019-11-01 | 2019-11-01 | Assembled eccentric positioning pin assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211009471U true CN211009471U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921877476.8U Expired - Fee Related CN211009471U (en) | 2019-11-01 | 2019-11-01 | Assembled eccentric positioning pin assembly |
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| Country | Link |
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| CN (1) | CN211009471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310102A (en) * | 2021-12-02 | 2022-04-12 | 上海宝钢阿赛洛激光拼焊有限公司 | Splice welding electromagnet positioning device with workpiece fine adjustment mechanism |
-
2019
- 2019-11-01 CN CN201921877476.8U patent/CN211009471U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310102A (en) * | 2021-12-02 | 2022-04-12 | 上海宝钢阿赛洛激光拼焊有限公司 | Splice welding electromagnet positioning device with workpiece fine adjustment mechanism |
| CN114310102B (en) * | 2021-12-02 | 2024-05-10 | 上海宝钢阿赛洛激光拼焊有限公司 | Welding electromagnet positioning device with workpiece fine-tuning mechanism |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 |