CN103071984A - Processing method for connecting rod - Google Patents
Processing method for connecting rod Download PDFInfo
- Publication number
- CN103071984A CN103071984A CN2013100081729A CN201310008172A CN103071984A CN 103071984 A CN103071984 A CN 103071984A CN 2013100081729 A CN2013100081729 A CN 2013100081729A CN 201310008172 A CN201310008172 A CN 201310008172A CN 103071984 A CN103071984 A CN 103071984A
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- China
- Prior art keywords
- connecting rod
- home record
- side shaft
- inner gear
- processing
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to the processing field of machinery, in particular to a processing method for a connecting rod. The processing method comprises the procedures of fine machining of a side shaft, nitrogenization and fine processing of an inner gear. The processing method is characterized in that a deformation amount is controlled respectively according to the deformation factors in the procedures, 1, when fine machining of the side shaft is carried out, a positioning tyre NO. 1 is arranged in the opening of the inner gear, a limiting bulge is arranged at a position, corresponding to the inner spigot of the inner gear, of the positioning tyre NO. 1; 2, when nitrogenization is carried out, a positioning tyre NO. 2 is arranged in the opening of the inner gear, and limiting bulges are respectively arranged at positions, corresponding to the inner spigot of the inner gear and the outer edge, of the positioning tyre NO. 2; and 3, when fine processing of the inner gear is carried out, the middle part of two side shafts of the connecting rod is taken as a zero basic point for alignment, and a coaxiality error value of the two side shafts of the connecting rod is detected along the generatrix of the side shafts. Compared with the prior art, the processing method has the beneficial effects that according to the connecting rod processed by an improved process, the coaxiality error of the two side shafts of the connecting rod can be controlled in the minimum scope, the processing precision of the connecting rod is increased, and the requirement for drawing technology can be met.
Description
Technical field
The present invention relates to field of machining, particularly relate to a kind of Machining of Connecting Rod method.
Background technology
Present domestic processing connecting rod is when especially needing to guarantee connecting rod both sides shaft concentricity, because the U-shaped eccentric block on the connecting rod makes the perpendicularity of axiality, U-shaped eccentric block home record and the side shaft of two side shafts be difficult to guarantee.See Fig. 1, the specification requirement of connecting rod is: 1, the side shaft coaxiality error of two φ 200mm is less than 0.03mm; 2, the error of perpendicularity of eccentric block home record 500mmH7 two sides and two φ 200mm side shaft axis is less than 0.05mm; 3, two φ 200mm side shaft external diameters need nitrogen treatment.
The method of generally taking is: 1, when lathe is processed two side shafts, for preventing the distortion that is installed, add support bar in home record; 2, during nitrogenize, for preventing thermal deformation, also add support bar at home record; 3, when the processing home record, carry out centering as zero point take connecting rod both sides shaft end head bus.
Present procedure of processing is as follows:
1, when lathe fine finishining two φ 200mm side shaft (1), for preventing the distortion that is installed, generally takes to add at the 500mmH7 home record method of support bar, such as Fig. 2, side shaft (1) one end is by chuck (2) chucking, and the side shaft other end holds out against with top (3), eccentric block (4) opening part establishing weight (5), the home record place establishes support bar (6), because top power is very large, connecting rod is subjected to axial force, and connecting rod both sides shaft distortion is illustrated in fig. 3 shown below, when top unclamp resilience after, the inevitable disalignment of connecting rod two side shafts.
2, when connecting rod two side shaft nitrogen treatment, for preventing temperature distortion, add support bar (6) at the 500H7 home record, following Fig. 4, connecting rod nitrogenize in degree situation more than 500 ℃ is after it is heated, produce thermal deformation, two side shafts of connecting rod (1) are outwards opened respectively, are illustrated in fig. 5 shown below the axis disalignment of connecting rod two side shafts.
3, when fine finishining eccentric block home record, such as Fig. 6, two side shaft axle head buses are as the zero-base point after the nitrogenize of connecting rod finishing respectively, and milling head (8) is positioned on the main shaft (7), places dial gauge (9) on the milling head eccentric block (4) is carried out centering; Detect two side shaft coaxiality deviations along the side shaft bus, following Fig. 7, the coaxiality error value that can find out two side shafts is H.
Such processing method, coaxiality error is relatively large, is difficult to reach by the drawing specification requirement, guarantees the axiality of connecting rod two side shafts.
Summary of the invention
The purpose of this invention is to provide a kind of Machining of Connecting Rod method, overcome the deficiencies in the prior art, set about from side shaft finishing, nitrogenize, each manufacturing procedure of home record finishing, avoid targetedly machining deformation and measure error in each link, improve the machining accuracy of workpiece, reach drawing requirement.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of Machining of Connecting Rod method comprises side shaft fine finishining, nitrogenize, home record finishing step, respectively for the control of the deformation factor in each operation deflection, wherein:
1) during side shaft fine finishining, at the home record opening part location tire one is set, tire one corresponding home record inner stopper place, location is provided with restriction protrusion, and the location tire is the effect of counterweight and restrained deformation together;
2) during nitrogen treatment, at the home record opening part location tire two is set, location tire two corresponding home record inner stoppers and place, outer are provided with respectively restriction protrusion, and location tire two can be controlled the inside or outside distortion of home record opening part;
3) during home record fine finishining, carry out centering take the separately middle part of two connecting rod side shafts as the zero-base point respectively, detect connecting rod two side shaft coaxiality error values along the side shaft bus, as the foundation of postorder processing.
Compared with prior art, the invention has the beneficial effects as follows:
Processes connecting rod by after improving can be controlled at the coaxiality error of connecting rod two side shafts within the minimum zone, has improved the machining accuracy of connecting rod, can satisfy the drawing specification requirement.
Description of drawings
Fig. 1 is workpiece bar linkage structure schematic diagram;
Fig. 2-Fig. 7 is the procedure of processing schematic diagram of connecting rod in the prior art;
Fig. 8-Figure 12 is the procedure of processing schematic diagram of connecting rod of the present invention.
Among the figure: the tire two 13-lathe tool 14-milling cutter 15-abrasive machines of tire one 11-screw 12-location, the top 4-eccentric block of 1-side shaft 2-chuck 3-5-mass 6-support bar 7-main shaft 8-milling head carriage 9-dial gauge 10-location
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further:
A kind of Machining of Connecting Rod method of the present invention is implemented the status architecture schematic diagram, comprises side shaft fine finishining, nitrogenize, home record finishing step, by controlling deflection for the deformation factor in each operation respectively, wherein:
1) during side shaft fine finishining, see Fig. 8, in the time of eccentric block 4 interior placement support bar 6 restrained deformation, at the home record opening part location tire 1 is set, location tire 1 links to each other by screw 11 with eccentric block 4, and tire one 10 corresponding home record inner stopper places, location are provided with restriction protrusion, location tire 1 plays counterweight and restrained deformation, connecting rod one end is installed on the chuck 2, and the other end withstands with top 3, with lathe tool 13 processing side shafts;
2) during nitrogen treatment, see Fig. 9, at the home record opening part location tire 2 12 is set, location tire 2 12 corresponding home record inner stoppers and place, outer are provided with respectively restriction protrusion, and location tire 2 12 can be controlled the inside or outside distortion of home record opening part;
3) during home record fine finishining, see Figure 10, at first will be take the middle part of connecting rod two side shafts carry out centering as the zero-base point, with the main shaft 7 of milling head 8, put dial gauge 9 on the milling head 8, detect connecting rod two side shaft coaxiality error values along the side shaft bus, see Figure 11, this error amount is half of prior art, is H/2, and error obviously reduces; See at last Figure 12, with the home record of milling cutter 14 Milling Process eccentric blocks 4, finished size 500mmH7.
Claims (1)
1. a Machining of Connecting Rod method comprises side shaft fine finishining, nitrogenize, home record finishing step, it is characterized in that, respectively for the control of the deformation factor in each operation deflection, wherein:
1) during side shaft fine finishining, at the home record opening part location tire one is set, tire one corresponding home record inner stopper place, location is provided with restriction protrusion;
2) during nitrogen treatment, at the home record opening part location tire two is set, location tire two corresponding home record inner stoppers and place, outer are provided with respectively restriction protrusion;
3) during home record fine finishining, carry out centering take the separately middle part of two connecting rod side shafts as the zero-base point respectively, detect connecting rod two side shaft coaxiality error values along the side shaft bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100081729A CN103071984A (en) | 2013-01-09 | 2013-01-09 | Processing method for connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100081729A CN103071984A (en) | 2013-01-09 | 2013-01-09 | Processing method for connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103071984A true CN103071984A (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100081729A Pending CN103071984A (en) | 2013-01-09 | 2013-01-09 | Processing method for connecting rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN103071984A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495847A (en) * | 2013-10-16 | 2014-01-08 | 青岛肯拉铎机械有限公司 | Connecting rod machining technique |
| CN103801901A (en) * | 2014-03-10 | 2014-05-21 | 南车株洲电力机车有限公司 | Processing technology for rocker arm positioning seat of B-shaped subway structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001162452A (en) * | 1999-12-08 | 2001-06-19 | Tamagawa Seiki Co Ltd | Gear and method of manufacturing the gear |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN102010972A (en) * | 2010-12-29 | 2011-04-13 | 桂林福达曲轴有限公司 | Method for eliminating internal stress of crankshaft through harmonic spectrum vibration aging treatment |
| CN102501037A (en) * | 2011-11-08 | 2012-06-20 | 沃得重型机床（中国）有限公司 | Machining method for crankshaft |
-
2013
- 2013-01-09 CN CN2013100081729A patent/CN103071984A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001162452A (en) * | 1999-12-08 | 2001-06-19 | Tamagawa Seiki Co Ltd | Gear and method of manufacturing the gear |
| CN101444884A (en) * | 2008-12-18 | 2009-06-03 | 浙江跃进机械有限公司 | Machining process of engine connecting rod |
| CN102010972A (en) * | 2010-12-29 | 2011-04-13 | 桂林福达曲轴有限公司 | Method for eliminating internal stress of crankshaft through harmonic spectrum vibration aging treatment |
| CN102501037A (en) * | 2011-11-08 | 2012-06-20 | 沃得重型机床（中国）有限公司 | Machining method for crankshaft |
Non-Patent Citations (1)
| Title |
|---|
| 田锋社: "《机械零件车削加工》", 30 May 2011, article "EQ1091发动机曲轴切削加工" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103495847A (en) * | 2013-10-16 | 2014-01-08 | 青岛肯拉铎机械有限公司 | Connecting rod machining technique |
| CN103495847B (en) * | 2013-10-16 | 2015-12-23 | 青岛肯拉铎机械有限公司 | Machining of Connecting Rod technique |
| CN103801901A (en) * | 2014-03-10 | 2014-05-21 | 南车株洲电力机车有限公司 | Processing technology for rocker arm positioning seat of B-shaped subway structure |
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Application publication date: 20130501 |