CN203305045U - Measuring point hole sealing surface grinding tool - Google Patents
Measuring point hole sealing surface grinding tool Download PDFInfo
- Publication number
- CN203305045U CN203305045U CN2013203106117U CN201320310611U CN203305045U CN 203305045 U CN203305045 U CN 203305045U CN 2013203106117 U CN2013203106117 U CN 2013203106117U CN 201320310611 U CN201320310611 U CN 201320310611U CN 203305045 U CN203305045 U CN 203305045U
- Authority
- CN
- China
- Prior art keywords
- measuring point
- grinding
- hole
- point hole
- sealing surface
- 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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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The utility model discloses a measuring point hole sealing surface grinding tool, which comprises a guide rod, a grinding rod, a grinding head and a handle. One end of the guide rod is provided with a threaded section which is matched with a measuring point hole. The other end of the guide rod is a cylindrical guide section. A guide hole which is matched with the cylindrical guide section is formed in the grinding head along the length direction. One end of the grinding head is provided with a conical grinding surface. The other end of the grinding head is fixedly connected with the grinding rod. A plurality of through holes are formed in the grinding rod. The handle is inserted into the through holes. The measuring point hole sealing surface grinding tool has the advantages that the structure is simple, the design is reasonable, the concentricity of a conical grinding surface and the threaded hole can be effectively guaranteed by using the grinding tool for processing the measuring point hole, and the roughness of the conical surface after grinding can reach Ra0.8 and is superior to the roughness required in a design drawing.
Description
Technical field
The utility model relates to a kind of milling tool, particularly relates to a kind of milling tool for steam turbine measuring point hole sealing surface.
Background technology
The measuring point hole of the height of steam turbine, intermediate pressure cylinder and high-pressure main steam regulating valve (comprising thermometer hole and pressure tap) sealing surface is all generally taper surface, thermometric, pressure tester are when assembling with corresponding measuring point hole, should guarantee to be threaded firmly with the measuring point hole, guarantee again with conical surface laminating tight, guarantee sealing function, while making unit operation sealing is firmly air tight, thereby guarantees the accuracy of final thermometric, pressure measurement.But existing processing to the measuring point hole makes the conical surface and screw concentricity poor, cause unit gas leakage when operation seriously, can't reach the purpose of thermometric, pressure measurement.
The utility model content
The purpose of this utility model just is to provide a kind of measuring point hole grinding tool for sealing surface, has solved poor and poor with the screw concentricity technical problem of measuring point hole cone face process roughness.
The purpose of this utility model realizes by following technical proposals:
A kind of measuring point hole grinding tool for sealing surface, comprise guide post, milling bar, grinding head and handle, guide post one end has the thread segment be complementary with the measuring point hole, the other end is the guide cylinder section, on grinding head, offer along its length the pilot hole be complementary with the guide cylinder section, grind first end and have conical surface abradant surface, the other end and milling bar are affixed, on milling bar, offer some through holes, handle is plugged in through hole.
Further, the conical surface abradant surface of described grinding head is 90 ° of conical surfaces.
Further, described grinding head adopts the HT200-7 material to make.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, reasonable in design, and the concentricity that adopts this milling tool processing measuring point hole can effectively guarantee to grind the conical surface and screwed hole, and the roughness of grinding rear cone can reach Ra0.8, is better than the design drawing requirement.
The accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of milling bar;
Fig. 3 is use view of the present utility model.
The specific embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
As depicted in figs. 1 and 2, a kind of measuring point hole grinding tool for sealing surface, comprise guide post 1, milling bar 2, grinding head 3 and handle 4, guide post 1 one ends have the thread segment 11 be complementary with the measuring point hole, and the other end is guide cylinder section 12, on grinding head 3, offer along its length the pilot hole 31 be complementary with guide cylinder section 12, grinding head 3 one ends have conical surface abradant surface 32, the other end and milling bar 2 are affixed, on milling bar 2, offer some through holes 21, and handle 4 is plugged in through hole 21.The conical surface abradant surface 32 of described grinding head 3 is 90 ° of conical surfaces.Described grinding head 3 adopts the HT200-7 material to make.
As shown in Figure 3, while using this milling tool to grind measuring point hole 5 sealing cone, at first, the thread segment 11 of guide post 1 is threaded with measuring point hole 5, then the pilot hole 31 of grinding head 3 inserts the guide cylinder section 12 of guide post 1, makes grinding head 3 coaxial with guide post 1, then handle 4 is inserted to suitable through hole 21 on milling bar 2, turning handle 4 is also axially exerted oneself, and completes the grinding of sealing cone.Use this milling tool can effectively guarantee the concentricity in grinding head 3 and measuring point hole 5, thereby guarantee the sealing cone and the concentricity in measuring point hole 5 that grind out, and the roughness of the conical surface after grinding can reach Ra0.8, be better than the design drawing requirement.This milling tool is specially adapted to the processing of the measuring point hole sealing cone of nuclear steam turbine, thermal power steam turbine and gas turbine.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. measuring point hole grinding tool for sealing surface, it is characterized in that: comprise guide post, milling bar, grinding head and handle, guide post one end has the thread segment be complementary with the measuring point hole, the other end is the guide cylinder section, on grinding head, offer along its length the pilot hole be complementary with the guide cylinder section, grind first end and have conical surface abradant surface, the other end and milling bar are affixed, on milling bar, offer some through holes, handle is plugged in through hole.
2. measuring point according to claim 1 hole grinding tool for sealing surface, it is characterized in that: the conical surface abradant surface of described grinding head is 90 ° of conical surfaces.
3. measuring point according to claim 2 hole grinding tool for sealing surface is characterized in that: described grinding head adopts the HT200-7 material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203106117U CN203305045U (en) | 2013-06-02 | 2013-06-02 | Measuring point hole sealing surface grinding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203106117U CN203305045U (en) | 2013-06-02 | 2013-06-02 | Measuring point hole sealing surface grinding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203305045U true CN203305045U (en) | 2013-11-27 |
Family
ID=49611280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203106117U Expired - Lifetime CN203305045U (en) | 2013-06-02 | 2013-06-02 | Measuring point hole sealing surface grinding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203305045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104029113A (en) * | 2014-06-04 | 2014-09-10 | 成都来宝石油设备有限公司 | Tool for grinding valve seat of petroleum valve |
-
2013
- 2013-06-02 CN CN2013203106117U patent/CN203305045U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104029113A (en) * | 2014-06-04 | 2014-09-10 | 成都来宝石油设备有限公司 | Tool for grinding valve seat of petroleum valve |
| CN104029113B (en) * | 2014-06-04 | 2016-10-26 | 温州市兴泰科技有限公司 | The milling tool of oil valve valve seat |
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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 |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |