CN201921949U - Structure capable of preventing fracture of connecting rod pin shaft of forge press machine tool - Google Patents
Structure capable of preventing fracture of connecting rod pin shaft of forge press machine tool Download PDFInfo
- Publication number
- CN201921949U CN201921949U CN2010206581176U CN201020658117U CN201921949U CN 201921949 U CN201921949 U CN 201921949U CN 2010206581176 U CN2010206581176 U CN 2010206581176U CN 201020658117 U CN201020658117 U CN 201020658117U CN 201921949 U CN201921949 U CN 201921949U
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- China
- Prior art keywords
- connecting rod
- circular arc
- pin shaft
- ball head
- bulb
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- Expired - Fee Related
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Abstract
The utility model discloses a structure capable of preventing fracture of a connecting rod pin shaft of a forge press machine tool, which comprises a connecting rod, wherein one end of the connecting rod is provided with a hinge hole; the other end of the connecting rod is provided with a ball head; the ball head is in contact with a ball head bushing; a shaft hole is machined on the ball head, a copper sleeve is sleeved in the shaft hole and a pin shaft is sleeved on the copper sleeve; both ends of the pin shaft are connected with a guide column, the pin shaft is composed of three coaxial segments, namely two end connecting segments connected with the guide column, and a connecting rod ball head connecting segment arranged between the two end connecting segments; the shape of the radial section of the connecting rod ball head connecting segment is formed by an upper half circular arc and a lower half circular arc; the lower half circular arc is a semicircle which has the same circle center and the same radius with the circle center and the radius of the radial sections of the two end connecting segments, and the upper half circular arc is an downward-eccentric semicircle which has the same radius with that of the radial sections of the two end connecting segments. The structure is simple, the main body connecting structure of the connecting rod in the prior art is not changed, and only the middle structure of the pin shaft is changed. The repairing accuracy of the machine tool is greatly reduced and the repairing cycle is also greatly shortened.
Description
Technical field
The utility model belongs to the forging machine tool linkage, is specifically related to a kind of structure that prevents the fracture of forging machine tool pitman pin.
Background technology
In the fault of press machine, the pitman pin fracture is wherein a kind of very common faults, its reason is after normally lathe has been used many decades, bulb because the connection rod sphere of lathe rubs for a long time on the guide pillar watt, make bulb that wearing and tearing watt take place, and wear extent has surpassed the gap between pitman pin and bearing pin copper sheathing, thereby make lathe when punching parts, the power that bent axle is passed to connecting rod acted directly on the pitman pin rather than bulb watt on, in the course of time just pitman pin is sheared and broken, cause machine failure.Existing repairing mode is original precision of dispatching from the factory of making bulb watt again and repairing bulb watt seat on connection rod sphere, the guide pillar, recover the gap of the gap of the connection rod sphere of lathe and bulb watt less than pitman pin and guide pillar pin shaft hole, the bent axle power of passing to connecting rod just can not act on the pitman pin but act on the bulb watt like this, but shape and position accuracy demand after this processes each parts are very high, handy high precision machine tool is repaired, and rehabilitation expense is high, repair time is very long.
Summary of the invention
The purpose of this utility model is to provide a kind of structure that prevents the fracture of forging machine tool pitman pin, to address the above problem.
The technical solution of the utility model is: the structure that prevents the fracture of forging machine tool pitman pin, it comprises connecting rod, connecting rod one end is established hinge hole, the connecting rod other end is established bulb, bulb and bulb watt contact, offer axis hole on the bulb, be with copper sheathing in the axis hole, the sheathed bearing pin of copper sheathing, the two ends of bearing pin are connected on the guide pillar, and bearing pin constitutes the both ends linkage section that is connected with guide pillar by coaxial three sections, connection rod sphere linkage section between the linkage section of both ends, the radial section shape of connection rod sphere linkage section is made of first circular arc and second circular arc; Second circular arc is and the radial section concentric of the both ends linkage section semicircle with radius that first circular arc is and the same radius of the radial section of both ends linkage section eccentric semicircle downwards.
The utility model adopts the gap of strengthening between bearing pin connection rod sphere linkage section and the copper sheathing hole upper semi-circle, thereby after avoiding the connection rod sphere wearing and tearing, lathe when punching parts, the power that bent axle is passed to connecting rod acted directly on the pitman pin rather than bulb watt on problem, guaranteed that bearing pin does not rupture.It is simple in structure, does not change the main body syndeton of former connecting rod, only changes the middle structure of bearing pin.Greatly reduced the reparation precision of lathe, let us can just can be repaired the link pin axis hole and the bulb watt seat of guide pillar on common boring machine, processing bulb watt on engine lathe, also make us avoid reparation to connection rod sphere, not only greatly reduce rehabilitation cost, also shortened repairing efficiency greatly.
Description of drawings
Fig. 1 prevents the structural representation of forging machine tool pitman pin fracture.
Fig. 2 bearing pin connection rod sphere linkage section radial cross-section.
The specific embodiment
As shown in Figure 1, the engaging lug 2 at two ends is connected by key 7 with the both ends linkage section 3.1 of bearing pin 3 on the guide pillar 1.The bulb of connecting rod 4 4.1 times contacts with bulb watts 5 on being located at guide pillar 1.Hinge hole 4.2 is established in connecting rod 4 upper ends, is provided with copper sheathing 4.3 in the hinge hole 4.2.Bulb 4.1 is offered the axis hole 4.4 that is connected with bearing pin 3, is arranged with copper sheathing 8 in the axis hole 4.4, the connection rod sphere linkage section 3.2 of copper sheathing 8 sheathed bearing pins.
As shown in Figure 2, the radial section shape of connection rod sphere linkage section 3.2 is made of first circular arc 3.3 and second circular arc 3.4; Second circular arc 3.4 is that first circular arc 3.3 is and the same radius R of the radial section of both ends linkage section, the semicircle of downward eccentric O1 with the radial section concentric O of both ends linkage section, with the semicircle of radius R.Center of circle O1 under the O of the center of circle, two centers of circle the line vertical level.
After the assembling, between the first half of copper sheathing 8 endoporus upper semi-circles and connection rod sphere linkage section 3.2 gapped 6.
When the slide block decline work of forging machine tool, bent axle is passed to connecting rod to power by connecting rod small-end bearing 4.3, connecting rod is used in bulb brasses 5 on the guide pillar to masterpiece by connection rod sphere again, the bulb brasses has been passed to guide pillar to power again, this moment is because pitman pin has eccentric existence, even there are bigger wearing and tearing (less than eccentric size) in the bulb brasses on the guide pillar, the power of connection rod sphere also acts on less than on the pitman pin, thereby has eliminated the hidden danger that causes the pitman pin fracture owing to the wearing and tearing of the bulb brasses on the guide pillar.When slide block rose, bent axle was mentioned connecting rod, and connecting rod is mentioned guide pillar by pitman pin, and guide pillar drives slide block again and rises.Because pitman pin two all is d-axis, very little with guide pillar pitman pin interporal lacuna, so when pitman pin is mentioned guide pillar, very steadily can not produce impact, protected the infringement that is not hit of guide pillar pin shaft hole effectively.
Claims (1)
1. structure that prevents forging machine tool pitman pin fracture, it comprises connecting rod, connecting rod one end is established hinge hole, the connecting rod other end is established bulb, bulb and bulb watt contact, offer axis hole on the bulb, be with copper sheathing in the axis hole, the sheathed bearing pin of copper sheathing, the two ends of bearing pin are connected on the guide pillar, it is characterized in that bearing pin constitutes the both ends linkage section that is connected with guide pillar by coaxial three sections, connection rod sphere linkage section between the linkage section of both ends, the radial section shape of connection rod sphere linkage section is made of first circular arc and second circular arc; Second circular arc is and the radial section concentric of the both ends linkage section semicircle with radius that first circular arc is and the same radius of the radial section of both ends linkage section eccentric semicircle downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206581176U CN201921949U (en) | 2010-12-14 | 2010-12-14 | Structure capable of preventing fracture of connecting rod pin shaft of forge press machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206581176U CN201921949U (en) | 2010-12-14 | 2010-12-14 | Structure capable of preventing fracture of connecting rod pin shaft of forge press machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201921949U true CN201921949U (en) | 2011-08-10 |
Family
ID=44425819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206581176U Expired - Fee Related CN201921949U (en) | 2010-12-14 | 2010-12-14 | Structure capable of preventing fracture of connecting rod pin shaft of forge press machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201921949U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873901A (en) * | 2012-09-27 | 2013-01-16 | 山东金箭精密机器有限公司 | Connecting rod and barrel bearing structure of press machine |
| CN103009665A (en) * | 2012-09-27 | 2013-04-03 | 山东金箭精密机器有限公司 | Bearing guide structure of adjusting threaded sleeve for press |
| CN107866465A (en) * | 2016-09-27 | 2018-04-03 | 褚瑜 | Linkage |
| CN109404514A (en) * | 2017-08-14 | 2019-03-01 | 苏州宝时得电动工具有限公司 | Support construction, transmission mechanism and the electric tool of eccentric wheel |
| CN110586797A (en) * | 2019-10-21 | 2019-12-20 | 浙江金澳兰机床有限公司 | Electric protection device of numerical control machine tool |
| CN115213334A (en) * | 2022-08-01 | 2022-10-21 | 中锻智能装备设计院(青岛)有限公司 | Closed height compensation device of die forging machine |
-
2010
- 2010-12-14 CN CN2010206581176U patent/CN201921949U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873901A (en) * | 2012-09-27 | 2013-01-16 | 山东金箭精密机器有限公司 | Connecting rod and barrel bearing structure of press machine |
| CN103009665A (en) * | 2012-09-27 | 2013-04-03 | 山东金箭精密机器有限公司 | Bearing guide structure of adjusting threaded sleeve for press |
| CN107866465A (en) * | 2016-09-27 | 2018-04-03 | 褚瑜 | Linkage |
| CN109404514A (en) * | 2017-08-14 | 2019-03-01 | 苏州宝时得电动工具有限公司 | Support construction, transmission mechanism and the electric tool of eccentric wheel |
| CN109404514B (en) * | 2017-08-14 | 2021-06-11 | 苏州宝时得电动工具有限公司 | Supporting structure of eccentric wheel, transmission mechanism and electric tool |
| CN110586797A (en) * | 2019-10-21 | 2019-12-20 | 浙江金澳兰机床有限公司 | Electric protection device of numerical control machine tool |
| CN110586797B (en) * | 2019-10-21 | 2021-02-23 | 浙江金澳兰机床有限公司 | Electric protection device of numerical control machine tool |
| CN115213334A (en) * | 2022-08-01 | 2022-10-21 | 中锻智能装备设计院(青岛)有限公司 | Closed height compensation device of die forging machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20161214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |