CN216264771U - Positioning fixture - Google Patents
Positioning fixture Download PDFInfo
- Publication number
- CN216264771U CN216264771U CN202122756594.7U CN202122756594U CN216264771U CN 216264771 U CN216264771 U CN 216264771U CN 202122756594 U CN202122756594 U CN 202122756594U CN 216264771 U CN216264771 U CN 216264771U
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- Prior art keywords
- boss
- positioning
- clamp
- positioning platform
- platform
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- 238000005553 drilling Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a positioning clamp which comprises a positioning platform, a centering boss, a fixed clamp and a movable clamp, wherein the positioning platform is provided with a notch matched with the shape of the centering boss, the cross section of the centering boss is an axisymmetric pattern, the centering boss is movably connected onto the positioning platform, the fixed clamp is detachably connected onto the positioning platform, the movable clamp is movably connected onto the positioning platform, and two surfaces of clamp notches of the fixed clamp and the movable clamp can be tangent to the outer surface of the centering boss. The positioning clamp can realize one-time drilling and positioning of the bearing outer rings with various dimensions, is convenient to operate on the premise of meeting the indexing precision, can reduce the labor intensity of workers, improves the working efficiency, and is low in manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of clamps, in particular to a positioning clamp.
Background
The bearing is a part used for determining the relative movement position of the rotating shaft and other parts and has a supporting or guiding function. With the requirement of high-speed and high-precision machining, a direct lubrication mode, also called under-ring lubrication, is generally adopted for the high-speed bearing. According to the bearing, two lubricating oil holes are directly and symmetrically processed on the outer ring of the bearing, the diameter of each lubricating oil hole is 0.5mm to 1.5mm, an oil inlet hole which radially penetrates through the inner wall surface and the outer wall surface of the outer ring, namely the lubricating oil hole, is formed in the outer ring, and lubricating oil enters the inside of the bearing through the oil inlet hole when the bearing works, so that the lubricating performance of the bearing is improved.
For a high-speed bearing, lubricating oil holes are symmetrically distributed on a bearing outer ring at 180 degrees, the existing lubricating oil hole processing adopts precision drilling processing, a bearing outer ring is placed in an annular groove to be positioned in the circumferential direction during processing, the end face of the bearing outer ring is positioned by a baffle, the bearing outer ring is manually rotated for 180 degrees after one hole is drilled, the other symmetrical hole is processed, in order to ensure the symmetry of the positions of two oil holes, the positions of the oil holes can be determined before processing in a scribing mode on the bearing outer ring, the processing mode is very low in efficiency, and the position precision of the oil holes cannot be ensured due to high error of manual operation. If when processing the bearing of different diameters, still need to change and add and hold anchor clamps, improved manufacturing cost, waste time and energy, reduced work efficiency, and can't be in the accurate location of processing man-hour.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a positioning clamp to solve the problems in the prior art, so that the machining precision of a lubricating oil hole is improved, and the working efficiency is improved.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model provides a positioning clamp which comprises a positioning platform, a centering boss, a fixed clamp and a movable clamp, wherein the positioning platform is provided with a notch matched with the centering boss in shape, the cross section of the centering boss is an axisymmetric pattern, the centering boss is movably connected to the positioning platform, the fixed clamp is detachably connected to the positioning platform, the movable clamp is movably connected to the positioning platform, and two surfaces of clamp notches of the fixed clamp and the movable clamp can be tangent to the outer surface of the centering boss.
Preferably, the centering boss comprises two bosses which are symmetrically connected, the central angles of the cross sections of the bosses are sectors with central angles of 90 degrees, and the notches are sectors with central angles of 90 degrees which are oppositely arranged.
Preferably, the boss is a quarter round table or a hemisphere or a circular step, a plurality of fan-shaped steps with different diameters are arranged on the circular step, and each step can be matched with a bearing outer ring of one specification.
Preferably, a sinking cavity for accommodating the boss is arranged below the positioning platform, and a lifting locking mechanism is arranged between the boss and the lower surface of the sinking cavity.
Preferably, lift locking mechanical system includes bolt, spring and lock nut, the bottom symmetry of boss is provided with a pair ofly the bolt, every all the cover is equipped with on the bolt the spring, the bolt passes the lower surface in heavy chamber with lock nut threaded connection, the spring is located the boss with between the lower surface in heavy chamber and be in compression state.
Preferably, the length of the bolt is greater than the height of the boss.
Preferably, the clamp notches of the fixed clamp and the movable clamp are both V-shaped and provided with rubber pads.
Preferably, the fixing clamp is provided with a kidney-shaped hole and is connected with the positioning platform through a bolt.
Preferably, the movable clamp is connected to the positioning platform through an air cylinder or a hydraulic cylinder.
Compared with the prior art, the utility model has the following technical effects:
the positioning clamp can realize one-time drilling and positioning of the bearing outer rings with various dimensions, is convenient to operate on the premise of meeting the indexing precision, can reduce the labor intensity of workers, improves the working efficiency, and is low in manufacturing cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a positioning fixture according to the present invention;
FIG. 2 is a first schematic structural view of a centering boss in the positioning fixture according to the present invention;
FIG. 3 is a second schematic structural view of a centering boss in the positioning fixture according to the present invention;
FIG. 4 is a schematic view of a second structure of the centering boss of the positioning fixture of the present invention;
wherein: 1-positioning fixture, 2-positioning platform, 3-centering boss, 4-fixing fixture, 5-movable fixture, 6-sinking cavity, 7-cylinder, 8-fan-shaped step, 9-bolt, 10-spring, 11-locking nut, 12-bearing outer ring, 13-drilling tool and 14-waist-shaped hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The utility model aims to provide a positioning clamp to solve the problems in the prior art, improve the machining precision of a lubricating oil hole and improve the working efficiency.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4: this embodiment provides a positioning fixture 1, including positioning platform 2, centering boss 3, mounting fixture 4 and activity anchor clamps 5, positioning platform 2 be provided with 3 shape assorted breachs of centering boss, centering boss 3's cross section is the axisymmetric figure, 3 swing joint of centering boss are on positioning platform 2, mounting fixture 4 can be dismantled and connect on positioning platform 2, 5 swing joint of activity anchor clamps are on positioning platform 2, all there are two faces on mounting fixture 4 and the anchor clamps notch of activity anchor clamps 5 can be tangent with the surface of centering boss 3.
The centering boss 3 comprises two bosses which are symmetrically connected, the central angle of the cross section of each boss is a sector with a central angle of 90 degrees, and the notch is a sector with two opposite central angles of 90 degrees. The boss is a quarter round table or hemisphere or round step and can avoid the punching position, and horizontal scale marks are drawn on the quarter round table or hemisphere so that the bearing outer ring 12 can be conveniently placed in alignment. As shown in fig. 4, a plurality of fan-shaped steps 8 with different diameters are arranged on one-fourth of the circular steps, and each fan-shaped step 8 can be matched with a bearing outer ring 12 with one specification. A sinking cavity 6 for accommodating the boss is arranged below the positioning platform 2, and a lifting locking mechanism is arranged between the boss and the lower surface of the sinking cavity 6.
The lifting locking mechanism comprises bolts 9, springs 10 and locking nuts 11, a pair of bolts 9 is symmetrically arranged at the bottoms of the bosses, each bolt 9 is sleeved with a spring 10, the bolts 9 penetrate through the lower surface of the sinking cavity 6 to be in threaded connection with the locking nuts 11, and the springs 10 are located between the bosses and the lower surface of the sinking cavity 6 and are in a compression state. The length of the bolt 9 is greater than the height of the boss. The bearing outer ring 12 and the clamp are centrally positioned by using partial circular cross sections or steps, the operation is simple and convenient, and the drilling tool 13 does not need to rotate in a plane.
The clamp notches of the fixed clamp 4 and the movable clamp 5 are both V-shaped, can adapt to bearing outer rings 12 of various sizes, and are provided with rubber pads to avoid damaging workpieces. The fixing clamp 4 is provided with a kidney-shaped hole 14 and is connected with the positioning platform 2 through a bolt 9, so that the fixing clamp can move transversely conveniently and is suitable for bearing outer rings 12 of various sizes. The movable clamp 5 is connected to the positioning platform 2 through an air cylinder 7 or a hydraulic cylinder, so that feeding and clamping are convenient.
When the positioning fixture 1 of this embodiment is used, the locking nut 11 is firstly unscrewed, the centering boss 3 is in a free state, a bearing outer ring 12 is horizontally placed on the centering boss 3 and pressed on the upper surface of the positioning platform 2 for centering, the fixing fixture 4 is moved to be tangent to the bearing outer ring 12, the positioning of the fixing fixture 4 is completed, and finally the centering boss 3 is hidden in the sunken cavity 6 and locked by the locking nut 11. Automatic positioning after the bearing outer ring 12 of the same model is fed, then the movable clamp 5 is pushed by the air cylinder 7 or the hydraulic cylinder to be tightened, drilling tools 13 on two sides can be directly drilled, and the machining efficiency is improved.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (9)
1. A positioning fixture is characterized in that: including positioning platform, centering boss, mounting fixture and movable clamp, positioning platform be provided with centering boss shape assorted breach, the cross section of centering boss is the axisymmetric figure, centering boss swing joint in positioning platform is last, mounting fixture can dismantle connect in positioning platform is last, movable clamp swing joint in positioning platform is last, mounting fixture with all have two faces on the anchor clamps notch of movable clamp can with the surface of centering boss is tangent, the drilling tool symmetry set up in centering boss's both sides just are 180 central symmetry.
2. The positioning jig of claim 1, wherein: the centering boss comprises two bosses which are symmetrically connected, the central angle of the cross section of each boss is a sector with a central angle of 90 degrees, and the notch is a sector with two opposite central angles of 90 degrees.
3. The positioning jig of claim 2, wherein: the boss is a quarter round platform or hemisphere or circular step, be provided with the fan-shaped step that a plurality of diameter is different on the circular step, every the step all can with the bearing inner race phase-match of a specification.
4. The positioning jig of claim 2, wherein: a sinking cavity for accommodating the boss is arranged below the positioning platform, and a lifting locking mechanism is arranged between the boss and the lower surface of the sinking cavity.
5. The positioning jig of claim 4, wherein: the lifting locking mechanism comprises a bolt, a spring and a locking nut, the bottom of the boss is symmetrically provided with a pair of bolts and each bolt is provided with the spring in a sleeved mode, the bolts penetrate through the lower surface of the sinking cavity and connected with the locking nut in a threaded mode, and the spring is located between the boss and the lower surface of the sinking cavity and in a compression state.
6. The positioning jig of claim 5, wherein: the length of the bolt is greater than the height of the boss.
7. The positioning jig of claim 1, wherein: the fixed clamp and the clamp notch of the movable clamp are both V-shaped and provided with rubber pads.
8. The positioning jig of claim 1, wherein: the fixing clamp is provided with a waist-shaped hole and is connected with the positioning platform through a bolt.
9. The positioning jig of claim 1, wherein: the movable clamp is connected to the positioning platform through an air cylinder or a hydraulic cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121105381 | 2021-05-21 | ||
| CN2021211053811 | 2021-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216264771U true CN216264771U (en) | 2022-04-12 |
Family
ID=81007932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122756594.7U Active CN216264771U (en) | 2021-05-21 | 2021-11-11 | Positioning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216264771U (en) |
-
2021
- 2021-11-11 CN CN202122756594.7U patent/CN216264771U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240312 Address after: Room 100, Building zr02, Pandong Village, Panzhuang Town, Linqing City, Liaocheng City, Shandong Province, 252600 Patentee after: Linqing Zhongrui Machinery Technology Co.,Ltd. Country or region after: China Address before: 252600 56 Xinkai street, Panzhuang Industrial Park, Linqing City, Liaocheng City, Shandong Province Patentee before: LIAOCHENG ZHONGRUI BEARING CO.,LTD. Country or region before: China |
|
| TR01 | Transfer of patent right |