CN103707155A - Valve body inner sealing surface machining method - Google Patents
Valve body inner sealing surface machining method Download PDFInfo
- Publication number
- CN103707155A CN103707155A CN201210369253.7A CN201210369253A CN103707155A CN 103707155 A CN103707155 A CN 103707155A CN 201210369253 A CN201210369253 A CN 201210369253A CN 103707155 A CN103707155 A CN 103707155A
- Authority
- CN
- China
- Prior art keywords
- valve body
- sealing surface
- inner sealing
- grinding
- body inner
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B15/00—Machines or devices designed for grinding seat surfaces; Accessories therefor
- B24B15/02—Machines or devices designed for grinding seat surfaces; Accessories therefor in valve housings
Abstract
The invention relates to a valve body inner sealing surface machining method which includes the steps of firstly, using a center lathe to lathe a valve body inner sealing surface; secondly, downwardly placing the valve body inner sealing surface above the grinding head of a special grinder, and compressing the valve body; thirdly, allowing the spindle of the grinder to lift and rotate so as to drive the grinding head to reach the valve body sealing surface; fourthly, using a push-pull mechanism formed by an air cylinder and a spring to drive the whole grinder power mechanism to move up so as to allow the grinding head to apply sufficient pressure to compress the valve body sealing surface while the grinding head rotates; fifthly, controlling a spindle motor to alternatively rotate forwards and backwards to allow the grinding head to rotate and grind in a circulation and reciprocation manner; wherein the pressure of the grinding head grinding the valve body sealing surface is controlled between 30Kg and 70Kg. The valve body inner sealing surface machining method has the advantages that the spindle motor is controlled to alternatively rotate forwards and backwards by a frequency changer, the grinding effect of the grinding head is increased favorably, grinding quality and efficiency are increased, and the method is high in automation level, good in machining quality and high in work efficiency.
Description
Technical field
The present invention relates to valve processing technique field, especially a kind of machining process of valve inner sealing surface.
Background technology
The sealing effectiveness of valve is the important indicator of weighing valve mass, common valve is generally by lathe, its sealing surface to be carried out after turning processing, with soft sealing ring, seal again, the sealing effectiveness of this class valve mainly relies on sealing ring, long-term use easily leaked, service life is short, and reliability is not high.The valve of existing employing hard sealing, reliability is higher, long service life.This class valve, after turning sealing surface, also will carry out grinding to sealing surface, makes valve sealing face reach higher flatness and roughness, thereby without using sealing ring also can reach good sealing effectiveness.
At present, existing valve manufacturing industry for the grinding of valve body inner sealing surface conventionally by manually carrying out, particularly for the valve of small volume, general electrician or pneumatic tools cannot extend in valve body, often can only by manually with sand paper or emery cloth to the valve body sealing surface processing of polishing, not only grinding quality is poor for this artificial grinding processing method, and consumes in a large number manpower, working strength is large, cannot meet the needs of large-scale industrial production.
Summary of the invention
For the deficiency of above existing valve body inner sealing surface processing method, the object of this invention is to provide a kind of machining process of valve body inner sealing surface, the quality of the method processing valve body inner sealing surface is good, and operating efficiency is high.
The object of the invention is by realizing by the following technical solutions:
Valve body inner sealing surface machining process, comprises the following steps:
(1) use engine lathe to carry out turning processing to the inner sealing surface of valve body;
(2) the valve body inner sealing surface after roughing is placed on to the bistrique top of special purpose grinder downwards, by cylinder I and work clamp, compresses valve body;
(3) grinding machine actuating unit drive shaft rises and rotation, arrives at the sealing surface position of valve body with rotary bistrique simultaneously;
(4) push-pull mechanism that PLC controller consists of cylinder and spring drives grinding machine actuating unit upwards whole, applies enough pressure and push down valve body sealing surface when making bistrique rotation;
(5) PLC controller is by Frequency Converter Control spindle motor forward with oppositely alternately rotatablely move, and makes the bistrique rotary grinding that moves in circles;
(6) after the grinding of valve body inner sealing surface completes, PLC controller is controlled described push-pull mechanism and is moved downward, and is declined and is stopped the rotation simultaneously by actuating unit drive shaft; Cylinder I drives work clamp to rise, and has taken the valve body of grinding away.
As the preferred technical solution of the present invention, described step (4) push-pull mechanism imposes on bistrique and pushes down the pressure of valve body sealing surface and be controlled at 30Kg to 70Kg.
The invention has the beneficial effects as follows: with respect to prior art, the present invention adopts PLC controller to control when main shaft is raised to operating position and locates; The push-pull mechanism push-and-pull actuating unit that utilizes spring and cylinder to form moves up and down, and makes the operating pressure that bistrique makes progress be controlled at 30-70Kg, thereby meets the operating pressure requirement of grinding valve inner sealing surface; PLC controller, by the forward and reverse alternately rotation of Frequency Converter Control spindle motor, is conducive to strengthen the ground effect of bistrique, improves grinding quality and grinding efficiency.Automaticity of the present invention is high, crudy good, operating efficiency is high.
The specific embodiment
Valve body inner sealing surface machining process, comprises the following steps:
(1) use engine lathe to carry out turning processing to the inner sealing surface of valve body;
(2) the valve body inner sealing surface after roughing is placed on to the bistrique top of special purpose grinder downwards, by cylinder I and work clamp, compresses valve body;
(3) grinding machine actuating unit drive shaft rises and rotation, arrives at the sealing surface position of valve body with rotary bistrique simultaneously;
(4) push-pull mechanism that PLC controller consists of cylinder and spring drives grinding machine actuating unit upwards whole, applies enough pressure and push down valve body sealing surface when making bistrique rotation;
(5) PLC controller is by Frequency Converter Control spindle motor forward with oppositely alternately rotatablely move, and makes the bistrique rotary grinding that moves in circles;
(6) after the grinding of valve body inner sealing surface completes, PLC controller is controlled described push-pull mechanism and is moved downward, and is declined and is stopped the rotation simultaneously by actuating unit drive shaft; Cylinder I drives work clamp to rise, and has taken the valve body of grinding away.
In the present embodiment, described step (4) push-pull mechanism imposes on bistrique and pushes down the pressure of valve body sealing surface and be controlled at 30Kg to 70Kg, thereby meets the operating pressure requirement of bistrique grinding valve body inner sealing surface.
Claims (2)
1. a valve body inner sealing surface machining process, is characterized in that described processing method comprises the following steps:
(1) use engine lathe to carry out turning processing to the inner sealing surface of valve body;
(2) the valve body inner sealing surface after roughing is placed on to the bistrique top of special purpose grinder downwards, by cylinder I and work clamp, compresses valve body;
(3) grinding machine actuating unit drive shaft rises and rotation, arrives at the sealing surface position of valve body with rotary bistrique simultaneously;
(4) push-pull mechanism that PLC controller consists of cylinder and spring drives grinding machine actuating unit upwards whole, applies enough pressure and push down valve body sealing surface when making bistrique rotation;
(5) PLC controller is by Frequency Converter Control spindle motor forward with oppositely alternately rotatablely move, and makes the bistrique rotary grinding that moves in circles;
(6) after the grinding of valve body inner sealing surface completes, PLC controller is controlled described push-pull mechanism and is moved downward, and is declined and is stopped the rotation simultaneously by actuating unit drive shaft; Cylinder I drives work clamp to rise, and has taken the valve body of grinding away.
2. valve body inner sealing surface machining process according to claim 1, is characterized in that: described step (4) push-pull mechanism imposes on bistrique and pushes down the pressure of valve body sealing surface and be controlled at 30Kg to 70Kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369253.7A CN103707155A (en) | 2012-09-28 | 2012-09-28 | Valve body inner sealing surface machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369253.7A CN103707155A (en) | 2012-09-28 | 2012-09-28 | Valve body inner sealing surface machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103707155A true CN103707155A (en) | 2014-04-09 |
Family
ID=50400697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210369253.7A Pending CN103707155A (en) | 2012-09-28 | 2012-09-28 | Valve body inner sealing surface machining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103707155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304407A (en) * | 2018-12-04 | 2019-02-05 | 中国航发贵州红林航空动力控制科技有限公司 | A kind of valve base sealing annulus impact forming method |
-
2012
- 2012-09-28 CN CN201210369253.7A patent/CN103707155A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304407A (en) * | 2018-12-04 | 2019-02-05 | 中国航发贵州红林航空动力控制科技有限公司 | A kind of valve base sealing annulus impact forming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |