CN204321650U - Pump body locating and machining latch structure - Google Patents
Pump body locating and machining latch structure Download PDFInfo
- Publication number
- CN204321650U CN204321650U CN201420833287.1U CN201420833287U CN204321650U CN 204321650 U CN204321650 U CN 204321650U CN 201420833287 U CN201420833287 U CN 201420833287U CN 204321650 U CN204321650 U CN 204321650U
- Authority
- CN
- China
- Prior art keywords
- alignment pin
- spring
- base plate
- key seat
- location key
- 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 - Fee Related
Links
- 238000003754 machining Methods 0.000 title claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of pump body locating and machining latch structure, comprise base plate, location key seat, alignment pin, alignment pin, described base plate upper surface is provided with counterbore, described counterbore bottom surface is provided with locating hole, locating hole internal fixtion is stretched into bottom described location key seat, described location key seat is socketed with spring, spring overcoat is connected to described alignment pin, described spring one end is connected with alignment pin, the spring other end is connected with described base plate, described set pin sleeve is connected in described alignment pin, the external wall of upper portion of described alignment pin is taper.Adopt said structure, the utility model has the following advantages: 1, under alignment pin abrasion condition, reduces because of installing hole Aperture uncertainty, and the clearance issues between causing between installing hole and alignment pin; 2, the stability of product in process is improved.
Description
Technical field
The utility model relates to pump technology field, particularly a kind of pump body locating and machining latch structure.
Background technology
In the production process of pump body, product orientation generally adopts plane and two pits.Two alignment pins are a straight pin, a rhombus pin, two alignment pins and frock pump housing interference fit, two alignment pins and product matched in clearance.The method is when Fixture Design, and because structure is simple, cost of manufacture is cheap, thus extensively adopts.Although this design has above advantage, also Shortcomings part, as: alignment pin and product matched in clearance, after alignment pin produces wearing and tearing, gap increases, and has an impact to product following process.
Utility model content
Technical problem to be solved in the utility model is, for the deficiencies in the prior art, provides a kind of under alignment pin abrasion condition, reduces the pump body locating and machining latch structure in the gap of alignment pin and installing hole.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of pump body locating and machining latch structure, comprise base plate, location key seat, alignment pin, alignment pin, described base plate upper surface is provided with counterbore, described counterbore bottom surface is provided with locating hole, locating hole internal fixtion is stretched into bottom described location key seat, described location key seat is socketed with spring, spring overcoat is connected to described alignment pin, described spring one end is connected with alignment pin, the spring other end is connected with described base plate, described set pin sleeve is connected in described alignment pin, the external wall of upper portion of described alignment pin is taper, the upper inside wall of described alignment pin is provided with annular groove, the dust-proof seal ring being enclosed within described alignment pin top is provided with in described annular groove, the bottom peripheral edge of described alignment pin is extended with annular protrusion, the upper surface of annular protrusion and alignment pin axial wall, the counterbore inwall of base plate forms cannelure, the annular lug matched with cannelure is extended with bottom described alignment pin.
The utility model adopts said structure, has the following advantages: 1, under alignment pin abrasion condition, reduces because of installing hole Aperture uncertainty, and the clearance issues between causing between installing hole and alignment pin; 2, the stability of product in process is improved.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail;
Fig. 1 is structural representation of the present utility model;
In FIG, 1, base plate; 2, location key seat; 3, alignment pin; 4, alignment pin; 5, spring; 6, dust-proof seal ring.
Detailed description of the invention
A kind of pump body locating and machining latch structure as shown in Figure 1, comprise base plate 1, location key seat 2, alignment pin 3, alignment pin 4, base plate 1 upper surface is provided with counterbore, counterbore bottom surface is provided with locating hole, locating hole internal fixtion is stretched into bottom location key seat 2, location key seat 2 is socketed with spring 5, described alignment pin 3 is socketed with outside spring 5, spring 5 one end is connected with alignment pin 3, spring 5 other end is connected with base plate 1, alignment pin 4 is socketed in described alignment pin 3, and the external wall of upper portion of alignment pin 4 is taper.
The bottom peripheral edge of alignment pin 3 is extended with annular protrusion, and the counterbore inwall of the upper surface of annular protrusion and alignment pin axial wall, base plate 1 forms cannelure, is extended with the annular lug matched with cannelure bottom alignment pin 4.The upper inside wall of alignment pin 4 is provided with annular groove, is provided with the dust-proof seal ring 6 being enclosed within described alignment pin 3 top in annular groove.
After the assembling of this locating pin structure, put into base plate 1, put into after then product installing hole being aimed at tapering alignment pin 4, use external force to make alignment pin 4 by downward active force, the stressed generation distortion of spring 5, after active force is eliminated, spring 5 recovers former state.Because alignment pin 4 is tapering spring catch, therefore, when installing hole is in the margin of tolerance, spring elongation makes installing hole can contact with tapering alignment pin 4, thus reduces the gap of alignment pin 4 and installing hole.
By reference to the accompanying drawings the utility model is exemplarily described above; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the various improvement that the technical solution of the utility model is carried out; or directly apply to other occasion, all within protection domain of the present utility model without improving.
Claims (1)
1. a pump body locating and machining latch structure, it is characterized in that: comprise base plate (1), location key seat (2), alignment pin (3), alignment pin (4), described base plate (1) upper surface is provided with counterbore, described counterbore bottom surface is provided with locating hole, locating hole internal fixtion is stretched in described location key seat (2) bottom, described location key seat (2) is socketed with spring (5), described alignment pin (3) is socketed with outside spring (5), described spring (5) one end is connected with alignment pin (3), spring (5) other end is connected with described base plate (1), described alignment pin (4) is socketed in described alignment pin (3), the external wall of upper portion of described alignment pin (4) is taper, the upper inside wall of described alignment pin (4) is provided with annular groove, the dust-proof seal ring (6) being enclosed within described alignment pin (3) top is provided with in described annular groove, the bottom peripheral edge of described alignment pin (3) is extended with annular protrusion, the upper surface of annular protrusion and alignment pin axial wall, the counterbore inwall of base plate (1) forms cannelure, described alignment pin (4) bottom is extended with the annular lug matched with cannelure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833287.1U CN204321650U (en) | 2014-12-24 | 2014-12-24 | Pump body locating and machining latch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833287.1U CN204321650U (en) | 2014-12-24 | 2014-12-24 | Pump body locating and machining latch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204321650U true CN204321650U (en) | 2015-05-13 |
Family
ID=53158053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420833287.1U Expired - Fee Related CN204321650U (en) | 2014-12-24 | 2014-12-24 | Pump body locating and machining latch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204321650U (en) |
-
2014
- 2014-12-24 CN CN201420833287.1U patent/CN204321650U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20201224 |