CN202825251U - Locating pin with air discharge duct - Google Patents
Locating pin with air discharge duct Download PDFInfo
- Publication number
- CN202825251U CN202825251U CN 201220266055 CN201220266055U CN202825251U CN 202825251 U CN202825251 U CN 202825251U CN 201220266055 CN201220266055 CN 201220266055 CN 201220266055 U CN201220266055 U CN 201220266055U CN 202825251 U CN202825251 U CN 202825251U
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- CN
- China
- Prior art keywords
- alignment pin
- air discharge
- discharge duct
- locating pin
- workpiece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a locating pin with an air discharge duct. The locating pin with the air discharge duct comprises the locating pin, wherein a guide position on the upper portion of the locating pin is a conical platform, the conical platform on the upper portion of the locating pin is provided with ball-shaped head portions which are integrally connected, and an arc air discharge duct is arranged on a position of an inclined angle of 45 degrees on the ball-shaped head portions. The locating pin with the air discharge duct is simple and ingenious in structural improvement. Due to the fact that the ball-shaped head portions and the conical guide portions are matched with each other, rapid location of a workpiece which is provided with an auxiliary hole as a blind hole is achieved, and operation is convenient and practical.
Description
Technical field
The utility model relates to the parts of location usefulness in the mechanical processing process, mainly is a kind of alignment pin with air discharge duct.
Background technology
In IC engine cylinder block and cylinder cap process, most of operation of workpiece is all carried out with the fabrication hole location, and many with the alignment pin of fabrication hole location all is fixed alignment pin, rather than movable latch, the location of workpiece puts in place by lifting, and then clamping work pieces is processed.Its head guide part of structure of alignment pin commonly used is a conical round platform, during lifting, the impossible absolute parallel of the locating surface of workpiece and the locating surface of anchor clamps, there is certain error, cause the axis of workpiece fabrication hole axis and alignment pin to have certain angle of inclination, and artificial lifting wants the workpiece fabrication hole to aim at alignment pin, there is certain difficulty, during the location, the fabrication hole edge may withstand on the round platform plane of guide part of alignment pin, alignment pin just is difficult to enter in the hole, or the round platform plane of alignment pin guide part enters along a certain side bus of fabrication hole, the operative employee is difficult to judge whether workpiece has good positioning, and particularly on hydraulically operated fixture, just might damage to alignment pin or to fabrication hole behind the clamping work pieces.When fabrication hole was blind hole, after alignment pin inserted, the air pressurized formed back pressure in the hole, makes the workpiece location difficulty, when workpiece is extracted from dowel hole, forms again negative pressure in the hole, makes workpiece be difficult to break away from alignment pin.
The utility model content
Technical problem to be solved in the utility model provides a kind of alignment pin with air discharge duct, and its architecture advances is ingenious simply again, adopts spherical head and conical guide part to cooperate, and can be that the workpiece of blind hole is located easy to operate practicality fast to fabrication hole.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of alignment pin with air discharge duct, include alignment pin, the guiding position on alignment pin top is conical platform, it is characterized in that: the spherical head that is connected on the conical platform on described alignment pin top has the circular arc air discharge duct in the position at oblique 45 ° angle on the described spherical head.
Tangent and rounding off between described spherical head and the conical platform.
Be designed to spherical head owing to alignment pin in the utility model, alignment pin is always some contact of circular arc with the position that fabrication hole contacts at first, during lifting workpiece location, alignment pin is easy to just can enter in the fabrication hole, be exactly that workpiece does not have the Alignment Process hole, workpiece planarization contacts with any arc point of alignment pin spherical head, be easy to slip in the fabrication hole, and can not withstand on the fabrication hole edge, the workpiece circular cone guide part that will enter rapidly alignment pin leads like this, positions so that the workpiece fabrication hole enters rapidly the alignment pin location division.For the blind hole fabrication hole, after alignment pin inserted, air was discharged from the alignment pin outgassing groove in the hole, can not form back pressure, when workpiece is extracted from dowel hole, also can not form negative pressure in the hole, made the workpiece location and pulled pin easily.The size of alignment pin workpiece position point diameter, anchor clamps position point diameter designs according to the tolerance in the hole standard according to alignment pin.
The length of circular cone guide part is generally 3-5mm in the utility model, and the radius of spherical head ball is tangent definite by top and the ball of circular cone guide part, and transition must be round and smooth.Outgassing groove design 45 ° of directions on the alignment pin spherical head are milled into the R0.5 arc groove.
The utility model has the advantages that:
The utility model architecture advances is ingenious simply again, adopts spherical head and conical guide part to cooperate, and can be that the workpiece of blind hole is located easy to operate practicality fast to fabrication hole.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is top view of the present utility model.
Fig. 3 is the structural representation of former alignment pin.
The specific embodiment
Referring to Fig. 1, a kind of alignment pin with air discharge duct includes alignment pin 1, and the guiding position 2 on alignment pin top is conical platform, the spherical head 3 that is connected on the conical platform 2 on described alignment pin top has circular arc air discharge duct 4 in the position at oblique 45 ° angle on the described spherical head 3.
Tangent and rounding off between described spherical head 3 and the conical platform 2.
Claims (2)
1. alignment pin with air discharge duct, include alignment pin, the guiding position on alignment pin top is conical platform, it is characterized in that: on the conical platform on described alignment pin top the spherical head that is connected is arranged, have the circular arc air discharge duct in the position at oblique 45 ° angle on the described spherical head.
2. a kind of alignment pin with air discharge duct according to claim 1 is characterized in that: tangent and rounding off between described spherical head and the conical platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220266055 CN202825251U (en) | 2012-06-07 | 2012-06-07 | Locating pin with air discharge duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220266055 CN202825251U (en) | 2012-06-07 | 2012-06-07 | Locating pin with air discharge duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202825251U true CN202825251U (en) | 2013-03-27 |
Family
ID=47937043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220266055 Expired - Lifetime CN202825251U (en) | 2012-06-07 | 2012-06-07 | Locating pin with air discharge duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202825251U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364745A (en) * | 2015-11-06 | 2016-03-02 | 重庆长安汽车股份有限公司 | Positioning pin for workpiece assembly and disassembly |
| CN106102954A (en) * | 2014-03-19 | 2016-11-09 | 高周波热錬株式会社 | Axle keeps sleeve, diameter of axle expansion instrument and the fixture for diameter of axle expansion instrument |
| CN114888526A (en) * | 2022-04-06 | 2022-08-12 | 北京九天行歌航天科技有限公司 | Method for processing inner surface of box bottom of integral central imperforate rocket tank |
-
2012
- 2012-06-07 CN CN 201220266055 patent/CN202825251U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106102954A (en) * | 2014-03-19 | 2016-11-09 | 高周波热錬株式会社 | Axle keeps sleeve, diameter of axle expansion instrument and the fixture for diameter of axle expansion instrument |
| CN105364745A (en) * | 2015-11-06 | 2016-03-02 | 重庆长安汽车股份有限公司 | Positioning pin for workpiece assembly and disassembly |
| CN114888526A (en) * | 2022-04-06 | 2022-08-12 | 北京九天行歌航天科技有限公司 | Method for processing inner surface of box bottom of integral central imperforate rocket tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |