CN209206181U - A kind of cold-extruded bolt grinding undercut extrusion tooling - Google Patents
A kind of cold-extruded bolt grinding undercut extrusion tooling Download PDFInfo
- Publication number
- CN209206181U CN209206181U CN201822250456.XU CN201822250456U CN209206181U CN 209206181 U CN209206181 U CN 209206181U CN 201822250456 U CN201822250456 U CN 201822250456U CN 209206181 U CN209206181 U CN 209206181U
- Authority
- CN
- China
- Prior art keywords
- wheel
- wheel disc
- idler wheel
- bolt
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 14
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000002929 anti-fatigue Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model relates to a kind of cold-extruded bolt grinding undercut extrusion toolings, roll wheel assembly including fixed frame and on the fixed frame, the roll wheel assembly includes idler wheel and idler wheel mounting rack, the lower end of the idler wheel mounting rack is fixedly mounted on the fixed frame, the idler wheel is mounted on the upper end of the idler wheel mounting rack by pin shaft, the idler wheel includes wheel disc, the two sides at the middle part of the wheel disc is respectively equipped with symmetrical cylindrical protrusions, and the center of the wheel disc is equipped with centre bore compatible with the pin shaft；The outer diameter of the cylindrical protrusions is less than the outer diameter of the wheel disc, and the wheel disc includes wheel disc ontology, and the periphery of the wheel disc ontology is equipped with loop；The beneficial effects of the utility model are: the outer diameter of cylindrical protrusions is less than the outer diameter of the wheel disc ontology, when idler wheel is used for extrusion forming grinding undercut, cylindrical protrusions will not be interfered with the head of bolt and bar portion, can form grinding undercut, guarantee the anti-fatigue performance of bolt.
Description
Technical field
The utility model relates to a kind of bolt grinding undercut extrusion tooling, in particular to a kind of cold-extruded bolt grinding undercut squeezes work
Dress.
Background technique
Requirement of the bolt that aeroengine rotor position uses to anti-fatigue performance is relatively high, if bolt is antifatigue
Performance is unqualified to will be present very big security risk；
Existing plain bolt is as Figure 1-Figure 2, including head 1-1 and screw rod 1-2, the 1-1 and screw rod 1-2 on head
Engaging portion is equipped with fillet 1-4 (angle R), and fillet 1-4 generally forms this plain bolt using machining and turns for aero-engine
When sub-portion, there are following two defects: first is that, the requirement of anti-fatigue performance is not able to satisfy making for aeroengine rotor position
With requiring, second is that, the binding site of head and screw rod and aeroengine rotor position can generate interference when being assembled.
Utility model content
The utility model in view of the deficiency of the prior art, provides a kind of cold-extruded bolt grinding undercut extrusion tooling,
Tooling will not be interfered with the head of bolt and bar portion.
The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of cold-extruded bolt grinding undercut extrusion tooling,
Roll wheel assembly including fixed frame and on the fixed frame, the roll wheel assembly include idler wheel and idler wheel mounting rack, described
The lower end of idler wheel mounting rack is fixedly mounted on the fixed frame, and the idler wheel is mounted on the idler wheel mounting rack by pin shaft
Upper end, the idler wheel include wheel disc, and the two sides at the middle part of the wheel disc is respectively equipped with symmetrical cylindrical protrusions, and the wheel
The center of disk is equipped with centre bore compatible with the pin shaft；The wheel disc includes wheel disc ontology, the periphery of the wheel disc ontology
Equipped with loop, the outer diameter of the cylindrical protrusions is less than the outer diameter of the wheel disc ontology.
Further, the roll wheel assembly includes 3, and 3 roll wheel assemblies are centered on the central axis of the bolt along circle
Zhou Junbu.
Further, the center line of the pin shaft and the horizontal plane are in 135 °.
Further, arc transition between the connecting pin of the cylindrical protrusions and the wheel disc.
Further, the free end edge of the cylindrical protrusions is equipped with chamfering.
It further, further include rotating mechanism, the rotating mechanism is able to drive the bolt rotation.
Further, the rotating mechanism includes swivel mount, and is mounted on motor on the swivel mount, retarder and pipe pressure
Head, the pipe pressure head are used to install the head of the bolt, and the motor drives the pipe pressure head rotation by the retarder.
The beneficial effects of the utility model are: first using grinding undercut is processed, then using in the utility model
Extrusion tooling, form flow harden layer in surpassed distance rooved face, greatly improve the anti-fatigue performance of bolt, be allowed to meet aviation hair
The requirement at motivation rotor position；The two sides of wheel disc is respectively equipped with cylindrical protrusions, and the outer diameter of cylindrical protrusions is less than institute
The outer diameter of wheel disc is stated, idler wheel is for when squeezing grinding undercut, cylindrical protrusions will not to be interfered with the head of bolt and bar portion；This
The cold-extruded bolt that sample obtains can also meet the matching requirements with aeroengine rotor position.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of plain bolt in the prior art；
Fig. 2 is the partial enlargement diagram in Fig. 1 at B；
Fig. 3 is the structural schematic diagram (omitting fixed frame, hold-down mechanism and rotating mechanism) of the utility model；
Fig. 4 is the partial enlargement diagram in Fig. 2 at A；
Fig. 5 is the structural schematic diagram of idler wheel in the utility model；
Fig. 6 is the positional diagram of idler wheel and bolt in the utility model；
In the accompanying drawings, list of designations represented by each label is as follows: 1, bolt, 1-1, head, 1-2, screw rod, 1-3,
Grinding undercut, 1-4, fillet, 2, idler wheel, 2-1, wheel disc, 2-11, wheel disc ontology, 2-12, loop, 2-2, centre bore, 2-3, circular cone
Platform, 2-4, cylindrical protrusions, 3, pin shaft, 4, idler wheel mounting rack.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
As shown in figures 3 to 6, a kind of cold-extruded bolt grinding undercut extrusion tooling, including fixed frame (being not drawn into figure) and 3 are set
Roll wheel assembly on the fixed frame, the roll wheel assembly include idler wheel 2 and idler wheel mounting rack 4, the idler wheel mounting rack 4
Lower end is fixedly mounted on the fixed frame, and the idler wheel 2 is mounted on the upper end of the idler wheel mounting rack 4 by pin shaft 3, described
Idler wheel 2 includes wheel disc 2-1, and the two sides at the middle part of the wheel disc 2-1 is respectively equipped with symmetrical cylindrical protrusions 2-4, and described
The center of wheel disc 2-1 is equipped with centre bore 2-2 compatible with the pin shaft 3；The wheel disc 2-1 includes wheel disc ontology 2-11, institute
The periphery for stating wheel disc ontology 2-11 is equipped with loop 2-12, and the loop 2-12 is adapted with the grinding undercut 1-3, the circle
The outer diameter of column-shaped projection 2-4 is less than the outer diameter of the wheel disc ontology 2-11.
3 roll wheel assemblies are uniformly distributed along the circumference centered on the central axis of the bolt 2.
The idler wheel 2 is structure as a whole.
Arc transition between the connecting pin of the cylindrical protrusions 2-4 and the wheel disc 2-1 effectively avoids stress from concentrating existing
As, and the free end edge of the cylindrical protrusions 2-4 is equipped with chamfering, to improve the flexibility of idler wheel 2.
The center line and the horizontal plane of the pin shaft 3 are in 135 °.
It further include rotating mechanism (being not drawn into figure), the rotating mechanism is able to drive the bolt rotation, the rotation
Mechanism uses rotating mechanism in the prior art.
The rotating mechanism includes swivel mount, and is mounted on motor on the swivel mount, retarder and pipe pressure head, described
Pipe pressure head is used to install the head of the bolt, and the motor drives the pipe pressure head rotation by the retarder.
The course of work of the utility model is as follows:
Idler wheel 2 is mounted on idler wheel mounting rack 4, elevating mechanism is additionally provided on the lathe, the elevating mechanism can
It drives the swivel mount to move up and down, by setting lathe parameter, makes swivel mount that pipe pressure head be driven to move downward the axis along bolt
To bolt is carried out from top to bottom apply pressure F, meanwhile, rotating mechanism drive bolt 1 rotate the regular hour, pair of rollers bolt
Head 1-1 and the engaging portion of screw rod 1-2 squeezed, form flow harden layer on the surface grinding undercut 1-3, can effectively improve
The anti-fatigue performance of bolt 1.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. a kind of cold-extruded bolt grinding undercut extrusion tooling, which is characterized in that the rolling including fixed frame and on the fixed frame
Wheel assembly, the roll wheel assembly include idler wheel and idler wheel mounting rack, and the lower end of the idler wheel mounting rack is fixedly mounted on described solid
Determine on frame, the idler wheel is mounted on the upper end of the idler wheel mounting rack by pin shaft, and the idler wheel includes wheel disc, the wheel disc
The two sides at middle part is respectively equipped with symmetrical cylindrical protrusions, and the center of the wheel disc is equipped in compatible with the pin shaft
Heart hole；The wheel disc includes wheel disc ontology, and the periphery of the wheel disc ontology is equipped with loop, and the outer diameter of the cylindrical protrusions is small
In the outer diameter of the wheel disc ontology.
2. cold-extruded bolt grinding undercut extrusion tooling according to claim 1, which is characterized in that the roll wheel assembly includes 3
A, 3 roll wheel assemblies are uniformly distributed along the circumference centered on the central axis of the bolt.
3. cold-extruded bolt grinding undercut extrusion tooling according to claim 1, which is characterized in that the center line of the pin shaft with
The horizontal plane is in 135 °.
4. cold-extruded bolt grinding undercut extrusion tooling according to claim 1-3, which is characterized in that the cylinder
Arc transition between the connecting pin and the wheel disc of protrusion.
5. cold-extruded bolt grinding undercut extrusion tooling according to claim 1-3, which is characterized in that further include rotation
Mechanism, the rotating mechanism are able to drive the bolt rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822250456.XU CN209206181U (en) | 2018-12-29 | 2018-12-29 | A kind of cold-extruded bolt grinding undercut extrusion tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822250456.XU CN209206181U (en) | 2018-12-29 | 2018-12-29 | A kind of cold-extruded bolt grinding undercut extrusion tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209206181U true CN209206181U (en) | 2019-08-06 |
Family
ID=67466605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822250456.XU Expired - Fee Related CN209206181U (en) | 2018-12-29 | 2018-12-29 | A kind of cold-extruded bolt grinding undercut extrusion tooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209206181U (en) |
-
2018
- 2018-12-29 CN CN201822250456.XU patent/CN209206181U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |