CN111015104A - Remanufacturing method for oil cylinder seam allowance - Google Patents
Remanufacturing method for oil cylinder seam allowance Download PDFInfo
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- CN111015104A CN111015104A CN201911284949.8A CN201911284949A CN111015104A CN 111015104 A CN111015104 A CN 111015104A CN 201911284949 A CN201911284949 A CN 201911284949A CN 111015104 A CN111015104 A CN 111015104A
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- cylinder
- face
- cylinder barrel
- spigot
- lathing
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- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- 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
- B23P6/00—Restoring or reconditioning objects
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- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a remanufacturing method of a spigot of an oil cylinder, which comprises the following steps: sawing off a cylinder opening of the cylinder barrel, and reserving a certain machining allowance on the end face of the cylinder barrel; expanding the tail part of the inner hole of the cylinder barrel, using a central frame to support the outer frame nest of the cylinder barrel, lathing the end face of the flat cylinder barrel, lathing an outer spigot on the end face of the cylinder barrel close to the inner end, and lathing a groove on the end face of the cylinder barrel close to the outer end; cutting a section from the waste cylinder barrel or a stub bar to be used as a cylinder opening section, and reserving a certain processing allowance for the length of the cylinder opening section; clamping the outer circle of the cylinder port section, turning and flattening the butt joint end face of the cylinder port section, turning an inner spigot on the inner end face close to the butt joint end face, and turning a groove on the outer end face close to the butt joint end face; and butting the butt joint end face of the cylinder opening section with the end face of the cylinder barrel, and filling and welding the grooves formed by the two grooves in a narrow gap welding mode. The remanufacturing method of the oil cylinder spigot has the advantages of scientific design, high safety coefficient and capability of meeting the strength requirement and reducing the rejection rate of the oil cylinder.
Description
Technical Field
The invention relates to a remanufacturing process of a cylinder barrel of a hydraulic support, in particular to a remanufacturing method of a spigot of an oil cylinder.
Background
The hydraulic support is a device for controlling the mine pressure of a coal face, wherein an upright post in the hydraulic support is a key part for bearing pressure, and because underground air humidity is high, toxic and harmful gas and corrosive dust are more, the cylinder opening position of a cylinder barrel on the upright post is easy to corrode, the thread is damaged, and the like.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the remanufacturing method of the oil cylinder spigot, which has the advantages of scientific design, high safety coefficient and capability of meeting the strength requirement and reducing the rejection rate of the oil cylinder.
In order to achieve the purpose, the invention adopts the technical scheme that: a remanufacturing method of a cylinder spigot comprises the following steps:
(1) sawing off a cylinder opening of the cylinder barrel, and reserving a certain machining allowance on the end face of the cylinder barrel;
(2) expanding the tail part of the inner hole of the cylinder barrel, using a central frame to support a cylinder barrel outer frame nest, flatly lathing the end face of the cylinder barrel, lathing an outer spigot on the end face of the cylinder barrel close to the inner end, and lathing a groove on the end face of the cylinder barrel close to the outer end;
(3) cutting a section from a waste cylinder barrel or a stub bar to be used as a cylinder opening section, wherein a certain machining allowance is reserved for the length of the cylinder opening section;
(4) clamping the outer circle of the cylinder port section, flatly lathing the butt joint end face of the cylinder port section, lathing an inner spigot on the inner end face close to the butt joint end face so as to be matched with the outer spigot on the end face of the cylinder barrel, and lathing a groove on the outer end face close to the butt joint end face so as to be matched with the groove on the end face of the cylinder barrel;
(5) and butting the butt joint end face of the cylinder opening section with the end face of the cylinder barrel, and filling and welding the grooves formed by the two grooves in a narrow gap welding mode.
Based on the above, the method also comprises the following steps after welding is completed:
(6) roughly boring the inner hole of the cylinder barrel, cladding the surface of the inner hole of the cylinder barrel, and scraping and rolling the inner hole of the cylinder barrel;
(7) double-supporting the rolling surface in the inner hole of the cylinder barrel, and correcting the outer frame nest of the cylinder barrel;
(8) and (3) supporting the tail part of the inner hole of the cylinder barrel, using a central frame to frame an outer frame nest of the cylinder barrel, and turning a cylinder opening spigot in the cylinder opening section.
Based on the above, the step (5) and the step (6) further comprise the steps of double-bracing the inner hole of the cylinder barrel, detecting the convex part on the welding line by a cutter, and turning an outer chamfer angle of 45 degrees at the outer end of the cylinder opening section.
Based on the above, the welding wire with GHS-60 specification and diameter of 1.2mm is used in the step (5).
Based on the above, the machining allowance remained in the step (1) and the step (3) is 5 mm.
Compared with the prior art, the cylinder opening repairing method has substantive characteristics and progress, particularly, the design idea of the invention is to cut the cylinder opening on the original cylinder and then connect a new cylinder opening, so that the problem that the threads of the cylinder opening cannot be repaired is solved, the inner and outer rabbets and the grooves are adopted for butt joint and narrow gap welding for welding, the strength requirement of a new cylinder body is ensured, the recovery and remanufacturing of the waste cylinder barrel are realized, and the cylinder opening repairing method has the advantages of scientific design, capability of meeting the strength requirement, high safety coefficient and capability of reducing the rejection rate of the oil cylinder.
Further, after the cylinder barrel and the cylinder port section are welded, the inner hole of the cylinder barrel is subjected to rough boring, cladding and scraping, continuous and uniform transition of the surface of the inner hole of the cylinder barrel is guaranteed, strength is further improved, the cylinder barrel outer frame nest is corrected by taking the rolling surface of the inner hole of the cylinder barrel as a reference, and finally, a cylinder port spigot is turned in the cylinder port section, so that the cylinder barrel can be repaired.
Drawings
Fig. 1 is a schematic structural view of the cylinder barrel before butt joint in the invention.
Fig. 2 is a schematic structural view before butt joint of cylinder port sections in the invention.
Fig. 3 is a schematic structural view of a repaired cylinder barrel in the invention.
In the figure: 1. a cylinder barrel; 2. a cylinder port section; 3. an outer spigot; 4. an inner spigot; 5. beveling; 6. a cylinder opening spigot; 7. rolling the surface; 8. erecting a nest; 9. the cylinder barrel hole.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
As shown in fig. 1-3, the invention provides a remanufacturing method of a cylinder spigot, which comprises the following steps:
firstly, sawing a cylinder opening of an original cylinder barrel 1, and reserving 5mm of machining allowance on the end face of the cylinder barrel 1;
secondly, supporting the tail part of an inner hole 9 of the cylinder barrel (the raw material of the cylinder barrel adopted by the invention can be the cylinder barrel with the cylinder bottom cut off so as to conveniently support the tail part of the inner hole 9 of the cylinder barrel), using a central frame to support an outer frame nest 8 of the cylinder barrel 1, lathing the end surface of the flat cylinder barrel 1, lathing an outer spigot 3 on the end surface of the cylinder barrel 1 close to the inner end surface, and lathing a bevel 5 on the end surface of the cylinder barrel 1 close to the outer end surface;
thirdly, cutting a section of the waste cylinder barrel or the stub bar to be used as a cylinder opening section 2, and reserving a machining allowance of 5mm for the length of the cylinder opening section 2;
fourthly, clamping the outer circle of the cylinder port section 2, flatly lathing the butt joint end face of the cylinder port section 2, lathing an inner spigot 4 on the inner end face close to the butt joint end face so as to be matched with the outer spigot 3 on the end face of the cylinder barrel 1, and lathing a bevel 5 on the outer end face close to the butt joint end face so as to be matched with the bevel 5 on the end face of the cylinder barrel 1;
fifthly, butting the butt joint end face of the cylinder opening section 2 with the end face of the cylinder barrel 1, cleaning a face to be welded, adopting a narrow gap welding mode, using a welding wire with the specification of GHS-60 and the diameter of phi 1.2mm, and adopting 80 percent of welding wireArgon and 20% CO2Filling and welding the groove formed by the two grooves 5 as mixed protective gas;
sixthly, double-supporting the inner hole 9 of the cylinder barrel, performing tool detection on a convex part on a welding line, and turning an outer chamfer angle of 45 degrees at the outer end of the cylinder port section 2;
seventhly, roughly boring the inner bore 9 of the cylinder barrel, cladding the surface of the inner bore 9 of the cylinder barrel by adopting a welding wire with the specification of ER50-6 and the diameter of phi 1.2mm, and scraping the inner bore 9 of the cylinder barrel;
eighthly, double-supporting a rolling surface 7 in the inner hole 9 of the cylinder barrel, and correcting an outer frame nest 8 of the cylinder barrel 1;
and step nine, supporting the tail part of an inner hole 9 of the cylinder barrel, using a central frame to frame a nest 8 outside the cylinder barrel 1, and turning a cylinder outlet spigot 6 in the cylinder port section 2 to obtain the repaired cylinder barrel.
The safety coefficient can reach more than 4 through intensity check on the repaired cylinder barrel, and meanwhile, the test is carried out according to the requirements of the standard GB25974, so that the standard requirements can be met, and the hydraulic support can be used for manufacturing a hydraulic support.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (5)
1. A remanufacturing method of a cylinder spigot is characterized by comprising the following steps:
(1) sawing off a cylinder opening of the cylinder barrel, and reserving a certain machining allowance on the end face of the cylinder barrel;
(2) expanding the tail part of the inner hole of the cylinder barrel, using a central frame to support a cylinder barrel outer frame nest, flatly lathing the end face of the cylinder barrel, lathing an outer spigot on the end face of the cylinder barrel close to the inner end, and lathing a groove on the end face of the cylinder barrel close to the outer end;
(3) cutting a section from a waste cylinder barrel or a stub bar to be used as a cylinder opening section, wherein a certain machining allowance is reserved for the length of the cylinder opening section;
(4) clamping the outer circle of the cylinder port section, flatly lathing the butt joint end face of the cylinder port section, lathing an inner spigot on the inner end face close to the butt joint end face so as to be matched with the outer spigot on the end face of the cylinder barrel, and lathing a groove on the outer end face close to the butt joint end face so as to be matched with the groove on the end face of the cylinder barrel;
(5) and butting the butt joint end face of the cylinder opening section with the end face of the cylinder barrel, and filling and welding the grooves formed by the two grooves in a narrow gap welding mode.
2. The cylinder spigot remanufacturing method according to claim 1, further comprising the following steps after completion of welding:
(6) roughly boring the inner hole of the cylinder barrel, cladding the surface of the inner hole of the cylinder barrel, and scraping and rolling the inner hole of the cylinder barrel;
(7) double-supporting the rolling surface in the inner hole of the cylinder barrel, and correcting the outer frame nest of the cylinder barrel;
(8) and (3) supporting the tail part of the inner hole of the cylinder barrel, using a central frame to frame an outer frame nest of the cylinder barrel, and turning a cylinder opening spigot in the cylinder opening section.
3. The cylinder spigot remanufacturing method according to claim 2, wherein: and (5) a step of double-bracing the inner hole of the cylinder barrel and turning a 45-degree outer chamfer at the outer end of the cylinder opening section by a cutter to detect a convex part on a welding line is further included between the step (5) and the step (6).
4. The cylinder spigot remanufacturing method according to any one of claims 1 to 3, wherein: the welding wire with the specification of GHS-60 and the diameter of phi 1.2mm is used in the step (5).
5. The cylinder spigot remanufacturing method according to claim 4, wherein: the machining allowance remained in the step (1) and the step (3) is 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911284949.8A CN111015104A (en) | 2019-12-13 | 2019-12-13 | Remanufacturing method for oil cylinder seam allowance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911284949.8A CN111015104A (en) | 2019-12-13 | 2019-12-13 | Remanufacturing method for oil cylinder seam allowance |
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| Publication Number | Publication Date |
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| CN111015104A true CN111015104A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911284949.8A Pending CN111015104A (en) | 2019-12-13 | 2019-12-13 | Remanufacturing method for oil cylinder seam allowance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531319A (en) * | 2020-05-08 | 2020-08-14 | 河南柴油机重工有限责任公司 | Method for repairing main shaft hole of internal combustion engine body and application |
| CN113070638A (en) * | 2021-03-30 | 2021-07-06 | 郑州煤矿机械集团股份有限公司 | Machining method of high-corrosion-resistance hydraulic cylinder barrel |
| CN113997019A (en) * | 2021-11-10 | 2022-02-01 | 中煤北京煤矿机械有限责任公司 | Method for adopting thickening surfacing welding on hydraulic oil cylinder |
| CN114193105A (en) * | 2021-12-23 | 2022-03-18 | 郑州煤机综机设备有限公司 | High-strength high-precision welding processing method for cylinder body in hydraulic oil cylinder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618904A (en) * | 2016-02-23 | 2016-06-01 | 中信重工机械股份有限公司 | Narrow-gap submerged-arc welding groove structure of large thick-wall oil cylinder and assembling and welding method |
| CN109641329A (en) * | 2016-08-31 | 2019-04-16 | 卡特彼勒公司 | The method for remanufacturing pre-burning chamber component |
-
2019
- 2019-12-13 CN CN201911284949.8A patent/CN111015104A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618904A (en) * | 2016-02-23 | 2016-06-01 | 中信重工机械股份有限公司 | Narrow-gap submerged-arc welding groove structure of large thick-wall oil cylinder and assembling and welding method |
| CN109641329A (en) * | 2016-08-31 | 2019-04-16 | 卡特彼勒公司 | The method for remanufacturing pre-burning chamber component |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111531319A (en) * | 2020-05-08 | 2020-08-14 | 河南柴油机重工有限责任公司 | Method for repairing main shaft hole of internal combustion engine body and application |
| CN113070638A (en) * | 2021-03-30 | 2021-07-06 | 郑州煤矿机械集团股份有限公司 | Machining method of high-corrosion-resistance hydraulic cylinder barrel |
| CN113070638B (en) * | 2021-03-30 | 2022-09-27 | 郑州煤矿机械集团股份有限公司 | Machining method of high-corrosion-resistance hydraulic cylinder barrel |
| CN113997019A (en) * | 2021-11-10 | 2022-02-01 | 中煤北京煤矿机械有限责任公司 | Method for adopting thickening surfacing welding on hydraulic oil cylinder |
| CN114193105A (en) * | 2021-12-23 | 2022-03-18 | 郑州煤机综机设备有限公司 | High-strength high-precision welding processing method for cylinder body in hydraulic oil cylinder |
| CN114193105B (en) * | 2021-12-23 | 2023-09-01 | 郑州煤机综机设备有限公司 | High-strength high-precision welding processing method for middle cylinder body of hydraulic cylinder |
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