CN208020122U - A kind of expansion drawing device - Google Patents
A kind of expansion drawing device Download PDFInfo
- Publication number
- CN208020122U CN208020122U CN201820374916.7U CN201820374916U CN208020122U CN 208020122 U CN208020122 U CN 208020122U CN 201820374916 U CN201820374916 U CN 201820374916U CN 208020122 U CN208020122 U CN 208020122U
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- CN
- China
- Prior art keywords
- expansion
- drawing device
- ejector pin
- connecting plate
- expansion tube
- 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.)
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Abstract
The utility model discloses a kind of expansion drawing devices, including expansion tube, ejector pin, connecting plate, holding screw and swell fixture, the ejector pin is located at swell fixture one end, swell fixture one end equipped with ejector pin is threadingly attached in expansion tube one end, the expansion tube other end is fitted and connected by end face in being located on the waist-shaped hole of connecting plate, and the holding screw is threadingly attached on connecting plate.Hole set takes out simplicity, is applicable to the drawing of various types of hole cover parts, and either cavity class or blind chamber receptoroid is all suitable for, and saves production time and cost.
Description
Technical field
The utility model is related to machinery manufacturing technology fields, more particularly, to a kind of expansion drawing device.
Background technology
At present in machinery production manufacture assembly field, coordinate to improve, repairing casting lacks and reaming filling, through frequently with edge
The mode of set improves receptor with certain interference volume.
But the bushing requirement due to manufacturing process and assembly technology, it is often necessary to take out.It, can be with for cavity receptoroid
It is extruded by the distal end that existing technology is covered from hole.But for blind chamber receptoroid, there are no effective in the prior art
Technique method, mostly use Cutting Process removal hole cover material, it is time-consuming and laborious, and be limited by technological ability, it is likely that cut
Hinder receptor, directly results in economic loss.
Utility model content
In view of the shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a kind of expansion drawing device,
To achieve the purpose that it is easy that hole set takes out.
In order to solve the above-mentioned technical problem, technical solution used by the utility model is：
A kind of expansion drawing device, including expansion tube, ejector pin, connecting plate, holding screw and swell fixture, the ejector pin
It is located at swell fixture one end, swell fixture one end equipped with ejector pin is threadingly attached in expansion tube one end, and expansion tube is another
One end is fitted and connected by end face in being located on the waist-shaped hole of connecting plate, and the holding screw is threadingly attached to connecting plate
On.
The holding screw is symmetrically arranged a pair, and expansion tube and swell fixture are located between a pair of of holding screw.
The end of thread of the expansion tube is equipped with for clamped flat position.
For the expansion piece peripheral hardware of the expansion tube there are two step surface, expansion piece is interior to be equipped with cone angle.
Waist type groove is equipped in the middle part of the connecting plate, waist type groove width is more than the flat bit width of expansion tube, and waist type groove width is small
In the flat position periphery diameter of expansion tube.
Two step surfaces of the expansion piece outer rim of the expansion tube are of different sizes, and major diameter step surface is for being bonded hole set class zero
The end face of part, and the width of the step anchor ring should be less than the wall thickness of hole set, and path step periphery is for being bonded hole set class zero
The inner headed face of part, plays the role of centering.
The end of the ejector pin is equipped with the conical surface, and cone angle fits in the conical surface and expansion piece of ejector pin.
The ejector pin is threadedly attached in swell fixture end.
There is deep gouge in waist type groove in the middle part of the connecting plate, the flat position end face of expansion tube, which can be embedded in deep gouge, when work plays
Fixed effect.
The utility model compared with prior art, has the following advantages：The expansion drawing device is reasonable in design, hole set
Simplicity to be taken out, the drawing of various types of hole cover parts is applicable to, either cavity class or blind chamber receptoroid is all suitable for,
Save production time and cost.
Description of the drawings
The content expressed by each width attached drawing of this specification and the label in figure are briefly described below：
Fig. 1 is the utility model tool front view.
Fig. 2 is the utility model tool vertical view.
Fig. 3 is the utility model connecting plate vertical view.
In figure：
01- expansion tubes；02- ejector pins；03- connecting plates；04- holding screws I；05- swell fixtures；06- holding screws II.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present utility model further detailed
Thin explanation.
As shown in Figure 1 to Figure 3, the expansion drawing device, including expansion tube 01, ejector pin 02, connecting plate 03, holding screw with
And swell fixture 05, ejector pin 02 are located at swell fixture one end, swell fixture one end equipped with ejector pin is threadingly attached to swollen
In tube expansion one end, 01 other end of expansion tube is fitted and connected by end face in being located on the waist-shaped hole of connecting plate, and holding screw passes through
It is threadedly connected on connecting plate.
Hole set takes out simplicity, is applicable to the drawing of various types of hole cover parts, either cavity class or blind chamber
Receptoroid is all suitable for, and saves production time and cost.
Holding screw is symmetrically arranged a pair, respectively holding screw I 04 and holding screw II 06, expansion tube and expansion
Screw is located between a pair of of holding screw.Specifically, holding screw I 04 and holding screw II 06 are threadingly attached to connecting plate
03 both sides.
The end of thread of expansion tube 01 is equipped with for clamped flat position；The expansion piece peripheral hardware of expansion tube there are two step surface,
Cone angle is equipped in expansion piece.
Ejector pin 02 is threadedly attached in swell fixture end；The end of ejector pin is equipped with the conical surface, the conical surface of ejector pin and expansion
Cone angle fits in piece.
03 middle part of connecting plate is equipped with waist type groove, and waist type groove width is more than the flat bit width of expansion tube, and waist type groove width is less than
The flat position periphery diameter of expansion tube.Preferably, there is waist type groove at 03 middle part of connecting plate, which is slightly larger than expansion tube 01
Flat bit width, but much smaller than expansion tube 01 flat position periphery.
Two step surfaces of the expansion piece outer rim of expansion tube are of different sizes, and major diameter step surface is for being bonded hole cover parts
End face, and the width of the step anchor ring should be less than the wall thickness of hole set, and path step periphery is for being bonded hole cover parts
Inner headed face plays the role of centering.
There is deep gouge in waist type groove in the middle part of connecting plate, the flat position end face of expansion tube, which can be embedded in deep gouge, when work plays fixation
Effect.
Using the expansion Hubbing method of expansion drawing device, include the following steps：
Expansion tube is mounted on the deep gouge in the waist type groove of connecting plate；
Holding screw is rotated, the expansion piece major diameter cascaded surface for adjusting expansion tube is remote less than the hole cover parts of wanted drawing
End face；
Holding screw is rotated, the cone angle in ejector pin extrusion expansion piece is forced, the path step periphery of expansion piece is made to be bonded
The inner headed face of hole cover parts；
Holding screw is rotated, adjustment expansion piece major diameter cascaded surface is bonded the distal face of the hole cover parts of wanted drawing, after
The continuous hole cover parts that are rotated up are detached from receptor.
By rotating holding screw, the cone angle in ejector pin extrusion expansion piece is forced, the outer diameter of expansion piece can be adjusted, is expanded
The periphery of piece has drawing cascaded surface and centering periphery, therefore for blind chamber receptoroid, which can will be swollen
After the expansion piece of tube expansion stretches into hole set distal end, then by adjusting expansion piece outer diameter, so that expansion piece is covered with hole and be bonded, finally rotation is tight
Determine screw, adjustment expansion piece major diameter cascaded surface is bonded the distal face of the hole cover parts of wanted drawing, continues to be rotated up hole set
Class part is detached from receptor.
The expansion drawing device is simple in structure, easy to use, at low cost, efficient, is applicable to various types of hole sets
The drawing of class part, either cavity class or blind chamber receptoroid；It can be to the expansion drawing for the hole set of different-diameter length
Normalization, to save the time cost and economic cost of production.
It above are only and above-mentioned technical characteristic can form multiple in any combination to be illustrated to the utility model preferred embodiment
The embodiments of the present invention scheme.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, as long as using the improvement of the various unsubstantialities of the design and technical solution progress of the utility model,
Or it is not improved the design of the utility model and technical solution are directly applied into other occasions, in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of expansion drawing device, it is characterised in that：Including expansion tube, ejector pin, connecting plate, holding screw and expanding screw
Nail, the ejector pin are located at swell fixture one end, and swell fixture one end equipped with ejector pin is threadingly attached to expansion tube one end
Interior, the expansion tube other end is fitted and connected by end face in being located on the waist-shaped hole of connecting plate, and the holding screw is connected by screw thread
It is connected on connecting plate.
2. expanding drawing device as described in claim 1, it is characterised in that：The holding screw is symmetrically arranged a pair, swollen
Tube expansion and swell fixture are located between a pair of of holding screw.
3. expansion drawing device as described in claim 1, it is characterised in that：The end of thread of the expansion tube is equipped with for being clamped
Flat position.
4. expansion drawing device as described in claim 1, it is characterised in that：There are two steps for the expansion piece peripheral hardware of the expansion tube
Face, expansion piece is interior to be equipped with cone angle.
5. expansion drawing device as claimed in claim 3, it is characterised in that：Waist type groove, waist type groove are equipped in the middle part of the connecting plate
Width is more than the flat bit width of expansion tube, and waist type groove width is less than the flat position periphery diameter of expansion tube.
6. expansion drawing device as claimed in claim 4, it is characterised in that：Two steps of the expansion piece outer rim of the expansion tube
Face is of different sizes, and major diameter step surface is used to be bonded the end face of hole cover parts, and the width of the step anchor ring should be less than hole set
Wall thickness, path step periphery is used to be bonded the inner headed faces of hole cover parts, plays the role of centering.
7. expansion drawing device as claimed in claim 4, it is characterised in that：The end of the ejector pin is equipped with the conical surface, the cone of ejector pin
Face fits with cone angle in expansion piece.
8. expansion drawing device as claimed in claim 4, it is characterised in that：The ejector pin is threadedly attached in swell fixture end
Portion.
9. expansion drawing device as claimed in claim 5, it is characterised in that：There is deep gouge in waist type groove in the middle part of the connecting plate,
When work the flat position end face of expansion tube can be embedded in deep gouge play the role of it is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820374916.7U CN208020122U (en) | 2018-03-20 | 2018-03-20 | A kind of expansion drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820374916.7U CN208020122U (en) | 2018-03-20 | 2018-03-20 | A kind of expansion drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208020122U true CN208020122U (en) | 2018-10-30 |
Family
ID=63907031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820374916.7U Active CN208020122U (en) | 2018-03-20 | 2018-03-20 | A kind of expansion drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208020122U (en) |
-
2018
- 2018-03-20 CN CN201820374916.7U patent/CN208020122U/en active Active
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| GR01 | Patent grant |