CN108856367A - A kind of valve rod bending deformation straightening technology - Google Patents
A kind of valve rod bending deformation straightening technology Download PDFInfo
- Publication number
- CN108856367A CN108856367A CN201810510468.3A CN201810510468A CN108856367A CN 108856367 A CN108856367 A CN 108856367A CN 201810510468 A CN201810510468 A CN 201810510468A CN 108856367 A CN108856367 A CN 108856367A
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- CN
- China
- Prior art keywords
- valve rod
- grinding machine
- high point
- bending deformation
- straightening technology
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A kind of valve rod bending deformation straightening technology, it is related to a kind of straightening technology, and in particular to a kind of valve rod bending deformation straightening technology.For the present invention in order to solve existing valve rod bending deformation aligning method, the period is long, and control deformation is unstable, and change deformation is either large or small, needs the problem of repeatedly pressing high point repeatedly.Step of the invention is：Step 1: the valve rod that will be repaired is mounted on grinding machine, the both ends of valve rod are held out against with top, start grinding machine, check bounce and the deflection of valve rod, and mark the high point on valve rod with marker pen；Step 2: valve rod free is placed on the ground, the high point marked in step 1 is upward；Step 3: carrying out a heating to the high point of valve rod using gas welding device；Step 4: valve rod is naturally cooled to room temperature, then valve rod is installed on grinding machine, the both ends of valve rod are held out against with top, are started grinding machine, are checked bounce and the deflection of valve rod, if valve rod alignment is not in place, repeat step 1 to step 3.The invention belongs to field of machining.
Description
Technical field
The present invention relates to a kind of straightening technologies, and in particular to a kind of valve rod bending deformation straightening technology belongs to machining
Field.
Background technique
The shaft length 868.8mm for having nitridation to require, diameter phi 38, L/D ratio about 23. belong to elongate rod.Nitridation
Layer surface hardness is not less than HV695, and nitridation layer depth is not less than 0.2mm, and brittleness is not more than 3 grades.
0.05mm surplus is stayed in every face before nitridation, and 0.05~0.12mm is bent after nitridation, subsequent grinding is not able to satisfy, causes
Scrap of the product.After valve rod nitridation deformation is applied at deformation high point through being straightened frequently with machinery with hand press or external force,
It is kept for certain time, part is made to generate plastic deformation.It can make to restore at deformation.But this aligning method, the period is long, control deformation
Unstable, change deformation is either large or small, needs repeatedly to press high point repeatedly.Alignment is inaccurate, will affect the two of other positions of part
Secondary deformation.And the valve rod small for surplus before nitrogenizing.It uses and is straightened with upper type, very not scientific, mode is simple and crude, not smart
It is quasi-.
Summary of the invention
The present invention is to solve existing valve rod bending deformation aligning method, and the period is long, and control deformation is unstable, change deformation or
It is big or small, the problem of repeatedly pressing high point repeatedly is needed, and then propose a kind of valve rod bending deformation straightening technology.
The present invention adopts the technical scheme that in order to solve the above problem：Technique of the present invention the specific steps are：
Step 1: the valve rod that will be repaired is mounted on grinding machine, the both ends of valve rod are held out against with top, start grinding machine, are checked
The bounce of valve rod and deflection, and the high point on valve rod is marked with marker pen；
Step 2: valve rod free is placed on the ground, the high point marked in step 1 is upward；
Step 3: carrying out a heating to the high point of valve rod using gas welding device；
Step 4: valve rod is naturally cooled to room temperature, then valve rod is installed on grinding machine, the top top in both ends of valve rod
Tightly, start grinding machine, check bounce and the deflection of valve rod, if valve rod alignment is not in place, repeat step 1 to step 3.
Further, the high point of valve rod is heated in step 3, heating temperature is 580 DEG C~750 DEG C, heating time
It is 10~20 seconds.
The beneficial effects of the invention are as follows：The present invention is very good to valve rod alignment effect, and alignment is high-efficient, for half finishing
The valve rod and elongate rod deformation effect of work and finishing deformation are more preferable, and alignment precision is high.Used gas welding device is exactly conventional
, common device, therefore use cost is low, improves economic benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of valve rod.
Specific embodiment
Specific embodiment one：Embodiment is described with reference to Fig. 1, a kind of valve rod bending deformation school described in present embodiment
Specific step is as follows for straight technique：
Step 1: the valve rod 1 that will be repaired is mounted on grinding machine, the both ends of valve rod 1 are held out against with top, start grinding machine, inspection
Bounce and the deflection of valve rod 1 are looked into, and marks the high point on valve rod 1 with marker pen；
Step 2: valve rod 1 is freely placed on ground, the high point marked in step 1 is upward；
Step 3: carrying out a heating to the high point of valve rod 1 using gas welding device；
Step 4: valve rod 1 is naturally cooled to room temperature, then valve rod 1 is installed on grinding machine, the both ends top of valve rod 1
Pinnacle is tight, starts grinding machine, checks that bounce and the deflection of valve rod 1 repeat step 1 to step if valve rod 1 is straightened not in place
Three.
Specific embodiment two：Embodiment is described with reference to Fig. 1, a kind of valve rod bending deformation school described in present embodiment
Straight technique, it is characterised in that：The high point of valve rod 1 is heated in step 3, heating temperature is 580 DEG C~750 DEG C, when heating
Between be 10~20 seconds.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
For the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention, according to the technical essence of the invention,
Within the spirit and principles in the present invention, any simple modifications, equivalent substitutions and improvements to the above embodiments etc., still
Belong within the protection scope of technical solution of the present invention.
Claims (2)
1. a kind of valve rod bending deformation straightening technology, it is characterised in that：A kind of valve rod bending deformation straightening technology it is specific
Steps are as follows：
Step 1: the valve rod (1) that will be repaired is mounted on grinding machine, the both ends of valve rod (1) are held out against with top, start grinding machine, inspection
Bounce and the deflection of valve rod (1) are looked into, and marks the high point on valve rod (1) with marker pen；
Step 2: valve rod (1) is freely placed on ground, the high point marked in step 1 is upward；
Step 3: carrying out a heating to the high point of valve rod (1) using gas welding device；
Step 4: valve rod (1) is naturally cooled to room temperature, then valve rod (1) is installed on grinding machine, the both ends of valve rod (1) are used
It is top to hold out against, start grinding machine, check bounce and the deflection of valve rod (1), if valve rod (1) alignment is not in place, repeats step 1
To step 3.
2. a kind of valve rod bending deformation straightening technology according to claim 1, it is characterised in that：To valve rod (1) in step 3
High point heated, heating temperature be 580 DEG C~750 DEG C, heating time be 10~20 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510468.3A CN108856367A (en) | 2018-05-24 | 2018-05-24 | A kind of valve rod bending deformation straightening technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810510468.3A CN108856367A (en) | 2018-05-24 | 2018-05-24 | A kind of valve rod bending deformation straightening technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108856367A true CN108856367A (en) | 2018-11-23 |
Family
ID=64334099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810510468.3A Pending CN108856367A (en) | 2018-05-24 | 2018-05-24 | A kind of valve rod bending deformation straightening technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108856367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275414A (en) * | 2021-05-08 | 2021-08-20 | 德州普利森机床有限公司 | Surface quenching and automatic straightening process and device for large-diameter long-specification boring rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727090A (en) * | 2008-10-29 | 2010-06-09 | 韩利生 | Integrated control system for automatically detecting and straightening flexural deformation of axial line of workpiece |
| CN102198457A (en) * | 2010-03-26 | 2011-09-28 | 广西玉柴机器股份有限公司 | Method and tool for straightening bending deformation of crankshaft |
| CN102513410A (en) * | 2011-12-27 | 2012-06-27 | 长春汇凯科技有限公司 | Radial runout measuring method for straightening machine long axis workpiece, and device thereof |
| CN103521557A (en) * | 2013-10-17 | 2014-01-22 | 成都四威高科技产业园有限公司 | Arc-heating shape correction method for part of long-cylinder thin-wall structure |
| CN107486482A (en) * | 2017-08-03 | 2017-12-19 | 湘潭电机股份有限公司 | A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method |
-
2018
- 2018-05-24 CN CN201810510468.3A patent/CN108856367A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101727090A (en) * | 2008-10-29 | 2010-06-09 | 韩利生 | Integrated control system for automatically detecting and straightening flexural deformation of axial line of workpiece |
| CN102198457A (en) * | 2010-03-26 | 2011-09-28 | 广西玉柴机器股份有限公司 | Method and tool for straightening bending deformation of crankshaft |
| CN102513410A (en) * | 2011-12-27 | 2012-06-27 | 长春汇凯科技有限公司 | Radial runout measuring method for straightening machine long axis workpiece, and device thereof |
| CN103521557A (en) * | 2013-10-17 | 2014-01-22 | 成都四威高科技产业园有限公司 | Arc-heating shape correction method for part of long-cylinder thin-wall structure |
| CN107486482A (en) * | 2017-08-03 | 2017-12-19 | 湘潭电机股份有限公司 | A kind of large-size machine rotating shaft Modeling Calculation type heat-straightening process method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275414A (en) * | 2021-05-08 | 2021-08-20 | 德州普利森机床有限公司 | Surface quenching and automatic straightening process and device for large-diameter long-specification boring rod |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181123 |
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| RJ01 | Rejection of invention patent application after publication |