CN208431247U - Core bar of the head with tangent arc - Google Patents
Core bar of the head with tangent arc Download PDFInfo
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- CN208431247U CN208431247U CN201821026729.6U CN201821026729U CN208431247U CN 208431247 U CN208431247 U CN 208431247U CN 201821026729 U CN201821026729 U CN 201821026729U CN 208431247 U CN208431247 U CN 208431247U
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- core bar
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- annular groove
- arc
- tangent
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Abstract
A kind of core bar the utility model discloses head with tangent arc, including core bar head (1), annular groove portion, it is characterized by: the front end of core bar head (1) is connected with annular groove portion, the disk front outer rim on core bar head (1) is disposed with tangent concave arc A(2), dome arc (3), concave arc B(4), annular groove portion includes several protrusions (5) being intervally arranged and annular groove (6), the uniformly arrangement at intervals of raised (5) and annular groove (6).The utility model accuracy is high, it is high-quality to stablize, structure is simple, production is convenient, is suitble to the popularization and use of non-riveted type wandering nut installation.
Description
Technical field
The utility model belongs to machine components technical field, relates in particular to a kind of core bar of the head with tangent arc.
Background technique
With the high fatigue of aircaft configuration, light-weighted requirement, non-riveted type wandering nut constantly substitutes riveted type travelling spiral shell
It is female.Traditional riveted type refers to that supporting plate is fixed on body by least two rivets, and body at least needs three holes of processing；Rather than
Riveted type refers to that supporting plate is deformed or is bonded by bottom squeeze and connect with body that body need to only process a hole, improve body
Globality and fatigue resistance.
Core bar is components common in mechanical processing process, and common core bar is by cylindrical head and with the bar of annular groove
Portion's composition, can only meet the needs of common.For non-riveted type travelling plate nut, it usually needs expand the logical of tray bottom
Hole, to be fixed on the tooth-shape structure of pallet on parts, and common core bar is not able to satisfy such requirement.
Summary of the invention
A kind of accuracy for there is provided the purpose of the utility model is to overcome disadvantages mentioned above is high, stablizes that high-quality, structure is simple
Single, convenient and fast core bar of the head with tangent arc of production.
It the utility model aim and solves its technical problem underlying and adopts the following technical solutions to realize:
Core bar of the head of the utility model with tangent arc, including core bar head, annular groove portion, in which: core bar head
Front end is connected with annular groove portion, and the disk front outer rim on core bar head is disposed with tangent concave arc A, dome arc, concave arc
B, annular groove portion include several protrusions being intervally arranged and annular groove.
Core bar of the above-mentioned head with tangent arc, in which: protrusion and annular groove are uniformly arranged at intervals.
The utility model compared with the existing technology has clear advantage and beneficial effect.From the above technical scheme,
In the core bar of the head with tangent arc of the utility model, the disk front outer rim on core bar head is disposed with tangent recessed circle
Arc A, dome arc, concave arc B, core bar use process convexity circular arc are first contacted with supporting plate bottom and through-hole transition region, concave arc B,
Concave arc A is deformed again, and inner hole moment is squeezed and is expanded, accurate steady to be fixed on the tooth-shape structure of pallet on parts
It is fixed.Core bar manufacturing process of the head with tangent arc is as follows:
1) core bar head sizes are determined, by analog simulation assembling process core bar stress deformation situation, determine three it is tangent
Arc size；
2), as die joint, to design a formpiston and a former, middle-jiao yang, function of the spleen and stomach at the disk (maximum outer circle) on core bar head
Mould includes formpiston ontology and internal cylindrical cavity A, and by cavity A forming core club head, former includes former core and former
Set and the cavity B of internal setting, form three tangent arc parts by cavity B；
3) core bar head forms, and selects high-precision cold-heading equipment to adjust mold, it is ensured that head one-time forming.
Wherein, female mould forming technique, former material need to select hard alloy (hardness >=65HRC), it is ensured that upsetting process mould
Have it is indeformable, because difficult and dimensional tolerance is smaller (R 0-0.05) by standard machinery machine-shaping for three convex-concave tangent arcs,
Mirror image edm forming profile can be used, then roughness is guaranteed by high-precision grinding.
This process technology can make core bar rapid shaping and dimensional uniformity is good, improve non-riveted type wandering nut installation
Process stability.
In short, the utility model accuracy is high, it is high-quality to stablize, structure is simple, production is convenient, it is suitble to non-riveted type travelling spiral shell
The popularization and use of mother's installation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view of a in Fig. 1；
Fig. 3 is the structural schematic diagram of formpiston；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the structural schematic diagram of former；
Fig. 6 is the left view of Fig. 5.
It is identified in figure:
1, core bar head；2, concave arc A；3, dome arc；4, concave arc B；5, raised；6, annular groove；7, formpiston ontology；8, empty
Chamber A；9, former core；10, former set；11, cavity B.
Specific embodiment
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes core bar tool of the head with tangent arc
Body embodiment, structure, feature and its effect, detailed description is as follows.
Referring to Fig. 1 to Fig. 2, the head of the utility model with the core bar of tangent arc, including core bar head 1, annular groove portion,
In: the front end on core bar head 1 is connected with annular groove portion, and the disk front outer rim on core bar head 1 is disposed with tangent concave arc
A2, dome arc 3, concave arc B4, annular groove portion include several protrusions 5 being intervally arranged and annular groove 6.Protrusion 5 and annular groove 6 are at intervals
Uniformly arrangement.
In use, dome arc 3 is first contacted with supporting plate bottom and through-hole transition region, concave arc 4, recessed circle referring to Fig. 3 to Fig. 6
Arc 2 is deformed again, and inner hole moment is squeezed and is expanded, precise and stable to be fixed on the tooth-shape structure of pallet on parts.Head
Core bar manufacturing process of the portion with tangent arc is as follows:
1) determine 1 size of core bar head, by analog simulation assembling process core bar stress deformation situation, determine three it is tangent
Arc size；
2), as die joint, to design a formpiston and a former, middle-jiao yang, function of the spleen and stomach at the disk (maximum outer circle) on core bar head 1
Mould includes formpiston ontology 7 and internal cylindrical cavity A8, and by cavity A8 forming core club head 1, former includes 9 He of former core
Former set 10 and the cavity B11 of internal setting, form three tangent arc parts by cavity B11；
3) core bar head 1 forms, and selects high-precision cold-heading equipment to adjust mold, it is ensured that head one-time forming.
Wherein, female mould forming technique, former material need to select hard alloy (hardness >=65HRC), it is ensured that upsetting process mould
Have it is indeformable, because difficult and dimensional tolerance is smaller (R 0-0.05) by standard machinery machine-shaping for three convex-concave tangent arcs,
Mirror image edm forming profile can be used, then roughness is guaranteed by high-precision grinding.
This process technology can make core bar rapid shaping and dimensional uniformity is good, improve non-riveted type wandering nut installation
Process stability.
The utility model accuracy is high, it is high-quality to stablize, structure is simple, production is convenient, and non-riveted type wandering nut is suitble to fill
The popularization and use of machine.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, it is any without departing from the content of the technical scheme of the utility model, according to the technical essence of the utility model to above embodiments
Made any simple modification, equivalent change and modification, are still within the scope of the technical solutions of the present invention.
Claims (2)
1. a kind of core bar of head with tangent arc, including core bar head (1), annular groove portion, it is characterised in that: core bar head (1)
Front end be connected with annular groove portion, the disk front outer rim of core bar head (1) is disposed with tangent concave arc A(2), dome arc
(3), concave arc B(4), annular groove portion includes several protrusions (5) being intervally arranged and annular groove (6).
2. core bar of the head as described in claim 1 with tangent arc, it is characterised in that: raised (5) and annular groove (6) are separately
It uniformly arranges on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821026729.6U CN208431247U (en) | 2018-06-30 | 2018-06-30 | Core bar of the head with tangent arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821026729.6U CN208431247U (en) | 2018-06-30 | 2018-06-30 | Core bar of the head with tangent arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208431247U true CN208431247U (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821026729.6U Active CN208431247U (en) | 2018-06-30 | 2018-06-30 | Core bar of the head with tangent arc |
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| CN (1) | CN208431247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980167A (en) * | 2018-06-30 | 2018-12-11 | 中国航空工业标准件制造有限责任公司 | Core bar of the head with tangent arc |
-
2018
- 2018-06-30 CN CN201821026729.6U patent/CN208431247U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980167A (en) * | 2018-06-30 | 2018-12-11 | 中国航空工业标准件制造有限责任公司 | Core bar of the head with tangent arc |
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