CN107584156B - Boring machining and positioning method for big head end of engine connecting rod - Google Patents
Boring machining and positioning method for big head end of engine connecting rod Download PDFInfo
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- CN107584156B CN107584156B CN201711011669.0A CN201711011669A CN107584156B CN 107584156 B CN107584156 B CN 107584156B CN 201711011669 A CN201711011669 A CN 201711011669A CN 107584156 B CN107584156 B CN 107584156B
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Abstract
The invention discloses a boring processing and positioning method for a big head end of an engine connecting rod, which comprises the following steps: (1) sleeving a connecting rod small-end hole on a connecting rod small-end positioning column arranged on the vertical positioning supporting plate; (2) the inner side surface of the connecting rod is attached to the positioning support plate, and the big end of the connecting rod is rotated to be in contact with a positioning stop block arranged on the positioning support plate; (3) the hydraulic cylinder works and drives the pressing plate to press the big end of the connecting rod, and positioning before machining of the connecting rod is completed. When the connecting rod is positioned, the small end hole of the connecting rod is sleeved on the connecting rod small end positioning column, and then the connecting rod large end is rotated to the positioning stop block to be pressed tightly through the pressing plate, so that the positioning can be completed, the operation is extremely simple and convenient, and the positioning precision is high.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a boring processing and positioning method for a large end of an engine connecting rod.
Background
At present, the boring processing of the large head end of the connecting rod of the engine mostly realizes the positioning of the connecting rod through a plurality of sets of positioning tools, the positioning operation is complex, and the positioning precision is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a boring and positioning method for the big head end of an engine connecting rod, so as to achieve the purposes of high positioning precision and simple and convenient positioning operation.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the boring processing and positioning method for the big head end of the engine connecting rod comprises the following steps:
(1) sleeving a connecting rod small-end hole on a connecting rod small-end positioning column arranged on the vertical positioning supporting plate;
(2) the inner side surface of the connecting rod is attached to the positioning support plate, and the big end of the connecting rod is rotated to be in contact with a positioning stop block arranged on the positioning support plate;
(3) the hydraulic cylinder works and drives the pressing plate to press the big end of the connecting rod, and positioning before machining of the connecting rod is completed.
After the step 2), the pushing cylinder pushes the jacking sliding block to jack one side of the big end of the connecting rod, and the jacking sliding block and the positioning stop block are respectively positioned on two sides of the big end of the connecting rod.
The pressing plate is movably arranged on the positioning supporting plate through a pin shaft, the upper end of the pressing plate is arranged corresponding to the big end of the connecting rod, and the hydraulic cylinder is provided with an ejector rod used for ejecting the lower end of the pressing plate.
The positioning support plate is provided with a sliding slot hole, and the positioning block is a tightly-pushing sliding block positioned in the sliding slot hole; the sliding groove hole is an inclined groove hole, and the jacking sliding block is hinged with a piston rod of the pushing cylinder.
The upper end of the pressure plate is of an open semicircular arc structure.
The inclined slotted hole is matched with the side surface of the jacking sliding block through a guide rail.
Compared with the prior art, the invention has the following advantages:
the boring processing and positioning method for the large end of the connecting rod of the engine is reasonable in design, when the connecting rod is positioned, only the small end hole of the connecting rod needs to be sleeved on the positioning column of the small end of the connecting rod, then the large end of the connecting rod rotates to the positioning stop block, and the positioning can be completed through pressing of the pressing plate, so that the operation is extremely simple and convenient, and the positioning precision is high.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of a positioning device according to the present invention.
FIG. 2 is a partial schematic view of a positioning device according to the present invention.
FIG. 3 is a partial schematic view of a positioning device according to the present invention.
In the figure:
1. the device comprises a bottom plate, a hydraulic cylinder 2, an ejector rod 3, a positioning support plate 4, a connecting rod small end positioning column 5, a pin shaft 6, a pressing plate 7, a positioning stop block 8, an avoiding through hole 9, a pushing cylinder 10, a sliding groove hole 11 and a jacking sliding block 12.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
The boring processing and positioning method for the big head end of the engine connecting rod comprises the following steps:
when the automobile connecting rod is used for boring a large head hole, the small head hole of the connecting rod is sleeved on the small head positioning column of the connecting rod, and the large head of the connecting rod is rotated to be in contact with the positioning stop block; the pushing cylinder works to push the jacking sliding block to move in the sliding groove hole, and the jacking sliding block slides out of the jacking connecting rod from the positioning supporting plate along the inclined guide rail; the hydraulic cylinder works to push the ejector rod to tightly push the lower end of the pressing plate, the upper end of the pressing plate tightly presses the big end of the connecting rod, the positioning is accurate, the big end of the connecting rod cannot move when the positioning is reliable and the machining is carried out, and the machining quality is improved; and the processing and positioning operation is extremely simple and convenient.
Fig. 1 to 3 show a positioning device used in a boring positioning method for a big-end of an engine connecting rod, which includes a bottom plate 1, a hydraulic cylinder 2, a top rod 3, a positioning support plate 4, a connecting rod small-end positioning column 5, a pin shaft 6, a pressing plate 7, a positioning stop 8, a pushing cylinder 10 and a tightening slide block 12.
The bottom plate 1 is of a flat plate structure, the bottom plate 1 is arranged on a boring machine tool, the positioning support plate 4 is vertically arranged on the bottom plate, a rail groove is formed in the bottom plate, a sliding block matched with the rail groove is arranged at the bottom of the positioning support plate, the positioning support plate can adjust the position along the rail groove, so that the position of a tool bit corresponding to a boring hole is adjusted, and the tool bit is positioned and fixed through a fastener after being adjusted, so that the machining requirements of different models are met.
A connecting rod small-head positioning column 5 is arranged on the positioning supporting plate 4 opposite to the boring cutter head side, the connecting rod small-head positioning column 5 is a cylinder with a protrusion arranged on the positioning supporting plate, and the connecting rod small-head positioning column is matched with the connecting rod small-head hole. The connecting rod small end hole is sleeved on the connecting rod small end positioning column, and then the positioning of the connecting rod small end can be completed.
The middle part of the pressure plate 7 is movably positioned on the positioning support plate through a pin shaft 6; preferably, the middle part of the pressing plate is provided with a connecting hole, the bolt penetrates through the connecting hole and is fixed on the positioning support plate, a movable gap is formed between the connecting hole and the bolt, and the specification size of the bolt cap is larger than that of the connecting hole.
And a compression spring is arranged on a pin shaft 6 between the pressing plate 7 and the positioning support plate 4, the pin shaft and the compression spring form a support point for the middle part of the pressing plate, and two ends of the pressing plate can move relative to the pin shaft.
The upper end of the pressing plate 7 corresponds to the big end of the connecting rod, and the upper end of the pressing plate is used for pressing the big end of the connecting rod. The upper end of the pressure plate is of an open semicircular arc structure, so that the whole pressure plate is of an inserted structure, the two open ends of the pressure plate can correspondingly press the two sides of the big end of the connecting rod, and the positioning is reliable. And the opening at the upper end of the pressure plate is convenient for the positioning operation of the big end of the connecting rod.
An avoiding through hole 9 is formed in the positioning support plate 4 corresponding to the large end of the automobile connecting rod, the avoiding through hole 9 is arranged corresponding to the opening in the upper end of the pressing plate and the boring cutter, and the avoiding through hole is used for avoiding the boring cutter, so that the processing operation is simple and convenient. The avoiding through hole is positioned right above the connecting rod small-end positioning column.
The hydraulic cylinder 2 is arranged on the bottom plate, and the hydraulic cylinder and the connecting rod small-end positioning column are respectively positioned at two sides of the positioning support plate. And a piston rod of the hydraulic cylinder is provided with a mandril 3 used for jacking the lower end of the plate. The positioning support plate is provided with a through hole for the mandril to pass through.
And a positioning stop block 8 for limiting the side face of the big end of the automobile connecting rod is arranged on the side, close to the pressure plate, of the positioning support plate 4. Preferably, location dog 8 is U type piece, passes establishing of the U groove adjustable position of location dog through the fastener in the location backup pad, and the position of location dog can be according to the connecting rod adjustment position of processing different models, and the location frock commonality is good, reduction equipment cost.
The pushing cylinder 10 is arranged on the positioning support plate 4, and a positioning block for positioning the other side of the big end of the connecting rod is arranged on the pushing cylinder 10. Preferably, the positioning stop block and the positioning block are respectively positioned at two sides of the avoiding through hole, the positioning support plate is provided with a sliding groove hole 11, and the positioning block is a jacking sliding block 12 positioned in the sliding groove hole.
The pushing cylinder 10 and the positioning stop block are respectively positioned on two sides of the positioning support plate, the pushing cylinder and the hydraulic cylinder are positioned on the same side of the positioning support plate, the sliding groove hole 11 is an inclined groove hole, the inclined groove hole is matched with the side surface of the tightly-pushing sliding block through a guide rail, namely the guide rail is an inclined guide rail, and the distance between the end of the inclined guide rail close to the avoiding through hole and the boring cutter is smaller than the distance between the other end of the inclined guide rail and the boring cutter.
The tightening slide block 12 is hinged with a piston rod of the pushing cylinder. Preferably, the jacking sliding block is connected with a piston rod of the pushing cylinder through a connecting push rod, one end of the connecting push rod is hinged with the jacking sliding block, and the other end of the connecting push rod is hinged with the end of the piston rod.
Before the connecting rod is positioned on the positioning support plate, the jacking sliding block is positioned in the sliding groove hole, the jacking sliding block does not protrude out of the positioning support plate, the small-end hole of the connecting rod is sleeved on the small-end positioning column of the connecting rod, and the jacking sliding block cannot block the connecting rod when the connecting rod rotates to the position of the positioning stop block, so that the connecting rod can be positioned and operated conveniently.
During positioning, a small-end hole of the connecting rod is sleeved on a connecting rod small-end positioning column, the connecting rod big-end is tightly pressed through the pressing plate, positioning structures are arranged on two sides of the connecting rod big-end, positioning accuracy is high, three-point limiting and positioning are reliable, the connecting rod cannot move during machining, and machining accuracy is further improved.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (3)
1. A boring processing and positioning method for a big head end of an engine connecting rod is characterized in that: the positioning method comprises the following steps:
(1) sleeving a connecting rod small-end hole on a connecting rod small-end positioning column arranged on the vertical positioning supporting plate;
(2) the inner side surface of the connecting rod is attached to the positioning support plate, and the big end of the connecting rod is rotated to be in contact with a positioning stop block arranged on the positioning support plate;
(3) the hydraulic cylinder works and drives the pressing plate to press the big end of the connecting rod, and positioning before machining of the connecting rod is completed;
after the step 2), the pushing cylinder pushes the jacking sliding block to jack one side of the big end of the connecting rod, and the jacking sliding block and the positioning stop block are respectively positioned on two sides of the big end of the connecting rod;
the positioning support plate is provided with a sliding slot hole, and the positioning block is a tightly-pushing sliding block positioned in the sliding slot hole; the sliding groove hole is an inclined groove hole, and the jacking sliding block is hinged with a piston rod of the pushing cylinder; the inclined slotted hole is matched with the side surface of the jacking sliding block through a guide rail.
2. The engine connecting rod big-end boring processing and positioning method as recited in claim 1, characterized in that: the pressing plate is movably arranged on the positioning supporting plate through a pin shaft, the upper end of the pressing plate is arranged corresponding to the big end of the connecting rod, and the hydraulic cylinder is provided with an ejector rod used for ejecting the lower end of the pressing plate.
3. The engine connecting rod big-end boring processing and positioning method as recited in claim 2, characterized in that: the upper end of the pressure plate is of an open semicircular arc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711011669.0A CN107584156B (en) | 2017-10-26 | 2017-10-26 | Boring machining and positioning method for big head end of engine connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711011669.0A CN107584156B (en) | 2017-10-26 | 2017-10-26 | Boring machining and positioning method for big head end of engine connecting rod |
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| Publication Number | Publication Date |
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| CN107584156A CN107584156A (en) | 2018-01-16 |
| CN107584156B true CN107584156B (en) | 2020-02-21 |
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| CN201711011669.0A Active CN107584156B (en) | 2017-10-26 | 2017-10-26 | Boring machining and positioning method for big head end of engine connecting rod |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108907737B (en) * | 2018-07-19 | 2023-11-17 | 湖北三峡职业技术学院 | Connecting rod expanding machine |
| CN112620700A (en) * | 2020-12-09 | 2021-04-09 | 芜湖航天汽车连杆有限公司 | Automobile connecting rod hole machining device |
| CN112620806A (en) * | 2020-12-09 | 2021-04-09 | 芜湖航天汽车连杆有限公司 | Engine connecting rod big end hole chamfer processingequipment |
| CN112621602A (en) * | 2020-12-10 | 2021-04-09 | 芜湖航天汽车连杆有限公司 | Positioning and adjusting method for engine connecting rod |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0568119A3 (en) * | 1990-11-14 | 1994-06-01 | Ex Cell O Gmbh | Method and apparatus for working machine parts havng a bearing hole. |
| CN103143955A (en) * | 2013-03-13 | 2013-06-12 | 乳山玉龙汽车配件有限公司 | Fixture for processing large and small head holes of connecting rod |
| CN103358150A (en) * | 2013-07-03 | 2013-10-23 | 芜湖航天汽车连杆有限公司 | Connecting rod big end hole fine boring fixture |
| CN103481080A (en) * | 2013-10-10 | 2014-01-01 | 柳州明宇机械有限公司 | Connecting rod big-end hole turning clamp |
| JP2014046378A (en) * | 2012-08-29 | 2014-03-17 | Toyota Motor Corp | Work fixing device and work fixing method |
| CN203527062U (en) * | 2013-11-13 | 2014-04-09 | 芜湖航天汽车连杆有限公司 | Connecting rod machining fixture |
| CN104259903A (en) * | 2014-08-14 | 2015-01-07 | 重庆山青机械制造有限公司 | Hydraulic milling fixture |
-
2017
- 2017-10-26 CN CN201711011669.0A patent/CN107584156B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0568119A3 (en) * | 1990-11-14 | 1994-06-01 | Ex Cell O Gmbh | Method and apparatus for working machine parts havng a bearing hole. |
| JP2014046378A (en) * | 2012-08-29 | 2014-03-17 | Toyota Motor Corp | Work fixing device and work fixing method |
| CN103143955A (en) * | 2013-03-13 | 2013-06-12 | 乳山玉龙汽车配件有限公司 | Fixture for processing large and small head holes of connecting rod |
| CN103358150A (en) * | 2013-07-03 | 2013-10-23 | 芜湖航天汽车连杆有限公司 | Connecting rod big end hole fine boring fixture |
| CN103481080A (en) * | 2013-10-10 | 2014-01-01 | 柳州明宇机械有限公司 | Connecting rod big-end hole turning clamp |
| CN203527062U (en) * | 2013-11-13 | 2014-04-09 | 芜湖航天汽车连杆有限公司 | Connecting rod machining fixture |
| CN104259903A (en) * | 2014-08-14 | 2015-01-07 | 重庆山青机械制造有限公司 | Hydraulic milling fixture |
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| CN107584156A (en) | 2018-01-16 |
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