CN220006791U - Double taper pin fixture positioning structure - Google Patents
Double taper pin fixture positioning structure Download PDFInfo
- Publication number
- CN220006791U CN220006791U CN202321075324.2U CN202321075324U CN220006791U CN 220006791 U CN220006791 U CN 220006791U CN 202321075324 U CN202321075324 U CN 202321075324U CN 220006791 U CN220006791 U CN 220006791U
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- China
- Prior art keywords
- taper pin
- double
- positioning structure
- guide post
- supporting seat
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- 238000007906 compression Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Insertion Pins And Rivets (AREA)
Abstract
The utility model discloses a double taper pin fixture positioning structure, which is characterized in that a guide post is arranged on a base, the base is used for fixing the whole device, a taper pin is arranged in the middle of the guide post, a second taper pin is arranged at the top of the guide post, the first taper pin and the second taper pin are used for taking the inner hole of a shell as reference, so that the common axis of two holes of a fixed power takeoff shell is as perpendicular as possible to a bottom plate, the first taper pin and the second taper pin limit the displacement of the shell along X, Y axis and the rotating degree of freedom, a supporting seat is arranged between the first taper pin and the second taper pin, supporting columns are arranged in the two sides of the supporting seat, the supporting columns are used for limiting the displacement of the shell along Z axis, an auxiliary supporting seat is arranged on one side of the base, an auxiliary supporting column is arranged on the auxiliary supporting seat, the auxiliary supporting columns limit the rotation of the shell along the Z axis, the influence caused by casting errors of a horizontal positioning end face blank is eliminated, the contour positioning of the inner hole blank is eliminated, the subsequent processing dimension out of deviation risk caused by clamping deviation does not exist, and the qualified rate of products is improved.
Description
Technical Field
The utility model relates to the technical field of machining, in particular to a positioning structure of a double taper pin clamp.
Background
In the existing workshop processing, the outer contour of a blank is adopted as a main positioning surface when the power takeoff shell is processed, and a clamp positioning structure with a single taper pin and an anti-rotation pin is matched.
However, the clamping state of the structure clamp is easily affected by blank casting errors, so that clamping deflection is caused, and further, the coaxiality, the position degree and other dimensions in subsequent processing are out of tolerance, even black skin appears, and the product qualification rate is greatly reduced.
Disclosure of Invention
The utility model aims to provide a double taper pin clamp positioning structure, which aims to solve the problems that in the prior art, clamping state is easily influenced by blank casting errors, clamping deflection is caused, and then the coaxiality, position degree and other dimensions in subsequent processing are out of tolerance, even black skin appears, and the product percent of pass is greatly reduced.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a bipyramid round pin anchor clamps location structure, includes the base, be provided with the guide post on the base, the guide post middle part is provided with first taper pin, first taper pin bottom is provided with first double-end stud, the guide post top is provided with the second taper pin, be provided with the supporting seat between first taper pin and the second taper pin, the inside support column that is provided with in supporting seat both sides, base one side is provided with auxiliary support seat, be provided with auxiliary support column on the auxiliary support seat, the guide post both sides all are provided with rotatory clamp plate.
Preferably, an inner hexagonal set screw and a hexagonal thin nut are fixed at the side part of the first taper pin, and the inner hexagonal set screw and the hexagonal thin nut are connected through bolts.
Preferably, the first taper pin is larger in area than the second taper pin.
Preferably, the top of the second taper pin is provided with an opening washer, a shoulder hexagonal nut and a second stud in sequence.
Preferably, the guide post is fixed to the base by way of a hole-axle fit.
Preferably, a compression spring is arranged on the first stud, and the top end of the compression spring is contacted with the first taper pin.
Preferably, the number of the first studs is three, and the studs are uniformly distributed at the bottom of the first taper pin.
Preferably, the central axes of the first and second taper pins coincide.
Preferably, the first gaskets are arranged on two sides of the supporting seat, and the second gaskets are arranged inside the supporting seat.
Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a double taper pin fixture positioning structure, which is characterized in that a guide post is arranged on a base, the base is used for fixing the whole device, a taper pin is arranged in the middle of the guide post, a first stud is arranged at the bottom of the first taper pin, a second taper pin is arranged at the top of the guide post, the first taper pin and the second taper pin are used for enabling the common axis of two holes of a fixed power takeoff shell to be vertical to a bottom plate as much as possible, a support seat is arranged between the first taper pin and the second taper pin, support columns are arranged in two sides of the support seat, the support columns are used for limiting the Z-axis displacement of the shell, an auxiliary support seat is arranged on one side of the base, the support seat is used for limiting the Z-axis displacement of the shell, the auxiliary support columns are arranged on the auxiliary support seats, the Z-axis rotation of the shell is limited by the auxiliary support columns, the influence caused by casting errors of a horizontal positioning end face blank is eliminated, the outline positioning of the inner hole blank is limited, the follow-up machining dimension exceeding risk caused by deflection clamping does not exist, and the product qualification rate is improved.
Further, the first gaskets are arranged on two sides of the supporting seat, and the second gaskets are arranged inside the supporting seat, so that the devices are prevented from being worn and heated.
Drawings
FIG. 1 is a first cross-sectional view of a double taper pin fixture positioning structure of the present utility model;
FIG. 2 is a second cross-sectional view of a double taper pin fixture positioning structure according to the present utility model;
fig. 3 is a perspective view of a positioning structure of a double taper pin clamp according to the present utility model.
In the figure: 8-hexagonal thin nuts, 9-auxiliary support columns, 10-rotary pressing plates, 11-guide columns, 12-auxiliary support seats, 13-studs, 14-first taper pins, 15-support seats, 16-second bushings, 17-first bushings, 18-shoulder hexagonal nuts, 19-studs, 20-split washers, 21-second taper pins, 22-bushings, 23-inner hexagonal set screws, 24-inner hexagonal cylindrical head screws, 25-support columns, 26-compression springs.
Detailed Description
The utility model will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the utility model.
Because the power takeoff shell parts need to be matched with parts such as a bearing, an output shaft and the like, the positioning of the clamp is mainly performed by positioning the inner hole, so that the relative size of the inner hole is ensured preferentially. After the double taper pin structure adopted by the application is pressed, the double taper pin structure can be positioned according to the outline of the inner hole of the blank, and can limit 4 degrees of freedom of rotation and translation along the X, Y shaft, and 2 degrees of freedom of rotation and translation along the Z shaft are limited by matching with the anti-rotation pin and the support column.
The utility model provides a double taper pin clamp positioning structure as shown in figures 1 and 3, which comprises a base, wherein a guide post 11 is arranged on the base, a taper pin 14 is arranged in the middle of the guide post 11, a first stud 13 is arranged at the bottom of a first taper pin 14, a second taper pin 21 is arranged at the top of the guide post 11, a supporting seat 15 is arranged between the first taper pin 14 and the second taper pin 21, an auxiliary supporting seat 12 is arranged on one side of the base, an auxiliary supporting column 9 is arranged on the auxiliary supporting seat 12, a rotary pressing plate 10 is arranged on two sides of the guide post 11, an inner hexagon set screw 23 and a hexagon thin nut 8 are fixed on the side part of the first taper pin 14, the inner hexagon set screw 23 and the hexagon thin nut 8 are connected through bolts, the area of the first taper pin 14 is larger than that of the second taper pin 21, the top of the second taper pin 21 is sequentially provided with an opening washer 20, a hexagonal nut 18 with shoulder and a second double-head screw 19, two sides of the supporting seat 15 are internally provided with supporting columns 25, the positions of the supporting columns 25 are shown in figure 2, the guide columns 11 are fixed on the base in a hole shaft matching mode, on the basis, the guide columns are pressed on the base plate through hexagonal cylindrical head screws 24, the first taper pin 13 is provided with compression springs 26, the compression springs 26 are tightly attached to the first taper pin 14, the number of the first taper studs 13 is three, the compression springs are uniformly distributed at the bottom of the first taper pin 14, the central axes of the first taper pin 14 and the second taper pin 21 coincide, two sides of the supporting seat 15 are provided with first gaskets 17, the second gaskets 16 are arranged in the supporting seat 15, when in use, the hexagonal nut 18 with shoulder is screwed, the coaxial taper pin 21 can be pressed down along the guide columns 11, the parts are clamped and aligned together with the first taper pin 14, meanwhile, the support column 25 swings according to the outline of the blank locating surface to limit the Z-axis displacement of the part, and the auxiliary support column 9 limits the Z-axis rotation of the part.
The working process comprises the following steps:
the shoulder hexagonal nut 18, the split washer 20 and the second taper pin 21 are removed, and the power takeoff housing blank is placed on a clamp.
As shown in fig. 1, the shoulder hexagonal nut 18, the split washer 20 and the second taper pin 21 are mounted, and the shoulder hexagonal nut 18 is screwed down to clamp and align the second taper pin 21 and the first taper pin 14.
And locking other auxiliary supports and pressing plates, and processing normally after the parts are fixed.
Although the embodiments of the present utility model have been described above with reference to the accompanying drawings, the present utility model is not limited to the above-described specific embodiments and application fields, which are merely illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may make many forms without departing from the scope of the utility model as claimed.
Claims (9)
1. The utility model provides a bipyramid round pin anchor clamps location structure, its characterized in that, the on-line screen storage device comprises a base, be provided with guide post (11) on the base, guide post (11) middle part is provided with first taper pin (14), first taper pin (14) bottom is provided with first double-end stud (13), guide post (11) top is provided with second taper pin (21), be provided with supporting seat (15) between first taper pin (14) and second taper pin (21), supporting seat (15) both sides inside is provided with support column (25), base one side is provided with auxiliary support seat (12), be provided with auxiliary support column (9) on auxiliary support seat (12), guide post (11) both sides all are provided with rotatory clamp plate (10).
2. The double taper pin clamp positioning structure according to claim 1, wherein an inner hexagonal set screw (23) and a hexagonal thin nut (8) are fixed to the side portion of the first taper pin (14), and the inner hexagonal set screw (23) and the hexagonal thin nut (8) are connected through bolts.
3. A double taper pin fixture positioning structure according to claim 1, wherein the first taper pin (14) has a larger area than the second taper pin (21).
4. The double taper pin clamp positioning structure according to claim 1, wherein the top of the second taper pin (21) is provided with an opening washer (20), a shoulder hexagonal nut (18) and a second double-head screw (19) in sequence.
5. A double taper pin jig positioning structure according to claim 1, wherein the guide post (11) is fixed to the base by means of hole shaft fitting.
6. The double taper pin fixture positioning structure according to claim 1, wherein a compression spring (26) is arranged on the first stud (13), and the top end of the compression spring (24) is in contact with the first taper pin (14).
7. The double taper pin fixture positioning structure according to claim 1, wherein the number of the first studs (13) is three, and the studs are uniformly distributed at the bottom of the first taper pin (14).
8. A double taper pin fixture positioning structure according to claim 1, wherein the central axes of the first taper pin (14) and the second taper pin (21) coincide.
9. The double taper pin clamp positioning structure according to claim 1, wherein the first gaskets (17) are arranged on two sides of the supporting seat (15), and the second gaskets (16) are arranged inside the supporting seat (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321075324.2U CN220006791U (en) | 2023-05-04 | 2023-05-04 | Double taper pin fixture positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321075324.2U CN220006791U (en) | 2023-05-04 | 2023-05-04 | Double taper pin fixture positioning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220006791U true CN220006791U (en) | 2023-11-14 |
Family
ID=88675642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321075324.2U Active CN220006791U (en) | 2023-05-04 | 2023-05-04 | Double taper pin fixture positioning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220006791U (en) |
-
2023
- 2023-05-04 CN CN202321075324.2U patent/CN220006791U/en active Active
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| GR01 | Patent grant | ||
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