CN204953794U - Step mould for cold heading machine - Google Patents
Step mould for cold heading machine Download PDFInfo
- Publication number
- CN204953794U CN204953794U CN201520666886.3U CN201520666886U CN204953794U CN 204953794 U CN204953794 U CN 204953794U CN 201520666886 U CN201520666886 U CN 201520666886U CN 204953794 U CN204953794 U CN 204953794U
- Authority
- CN
- China
- Prior art keywords
- nib
- counterdie
- ejector pin
- push rod
- external mold
- 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
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Abstract
The utility model provides a step mould for cold heading machine, including the lower mould with rather than the complex ejector pin, the lower mould includes centre form and external mold, the centre form is located in the external mold, the external mold with the axis of centre form is the same, the material of centre form is carbide, be equipped with the step nib in the centre form, the step is the right angle step, the step nib is close to the internal diameter that the ejector pin inserted the part of end is less than the internal diameter of keeping away from the ejector pin and inserting the tip, be close to in the centre form the nib that the ejector pin inserted the end extends to the external mold is close to the ejector pin inserts the terminal surface of end, and the big nib in aperture is the same with current lower mould aperture. Owing to adopt step nib structure, at the system in -process of upsetting, the ejector pin does not receive or receives very little axial pressure, and the no longer easy crooked or fracture of ejector pin finally makes the rammer system process of the thin pole high rigidity product of overlength to go on smoothly.
Description
Technical field
The utility model belongs to cold-heading apparatus field, particularly relates to a kind of cold headers step mould.
Background technology
Cold headers are a kind of cutting highly efficient in productivity, few or the common equipment without cutting, and the mould structure of its inside is the key ensureing upsetting quality.Wherein the effect of push rod ejects the product at die internal shaping.In Cold Heading Process, for the cold-heading product of slender rod type, especially existing elongate rod has again the cold-heading product of high rigidity, the draw ratio being exposed at counterdie outer side due to counterdie push rod is very large, the strength of shaped head is very large, push rod can be subject to the very large moment of deflection that product transmission comes, and is easy to cause push rod generation plastic bending or brittle fracture, causes upsetting system to carry out.
Utility model content
The problem that the technical program will solve is to provide a kind of cold headers step mould avoiding push rod to bend or to rupture.
For solving the problem, the technical solution adopted in the utility model:
A kind of cold headers step mould, the push rod comprising counterdie and be mated, described counterdie comprises internal mold and external mold, described internal mold is located in described external mold, described external mold is identical with the axis of described internal mold, the material of described internal mold is carbide alloy, step nib is provided with in described internal mold, described step is right angle step, described step nib is less than the internal diameter away from push rod insertion end part near the internal diameter of the part of described push rod insertion end, nib near described push rod insertion end in described internal mold extends to the end face of described external mold near described push rod insertion end, the large nib in aperture is identical with existing counterdie aperture.
Described counterdie is integral type structure.
Described counterdie is the split-type structural separated at the step surface place of described step nib.
Described internal mold is the split-type structural separated at the step surface place of described step nib.
The advantage that the utility model has and good effect are:
(1) owing to adopting step nib structure, in upsetting process, push rod is not subject to or is subject to very little axial compressive force, and push rod is bending or fracture no longer easily, finally makes the upsetting process of ultra-long slender rod high rigidity product to carry out smoothly;
(2) counterdie is integral type structure, avoids being occurred overlap by cold-heading product at step place and hindering push rod to eject by cold-heading product, and structural stability is good simultaneously;
(3) counterdie is the split-type structural separated at the step surface place of step nib, reduces the difficulty of Mould Machining;
(4) internal mold is the split-type structural separated at the step surface place of step nib, reduces Mould Machining difficulty, and structural stability is better simultaneously.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1,2,3 is schematic diagrames of three kinds of performances of a kind of cold headers step mould of the present utility model;
Fig. 4,5,6 uses a kind of cold headers step mould of the present utility model push rod present position schematic diagram when product shaping.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
Embodiment 1
As shown in Figure 1, cold headers counterdie is made of one by the present embodiment, and the nib of counterdie is made former and later two parts: nib anterior 1-1, nib rear portion 1-2.The pore size of the anterior 1-1 of nib is equal with common counterdie pore size, and the pore size of nib rear portion 1-2 is less than the pore size of the anterior 1-1 of nib, is made into right angle platform terrace 1-3 between the anterior 1-1 and nib rear portion 1-2 of nib.
As shown in Figure 4, a kind of cold headers step mold use method of the present embodiment is: when cold upset forming, and end face 1-4 push rod being goed deep into one end of counterdie is arranged at the rear side of counterdie right angle platform terrace 1-3.Make like this axial force that passed over by patrix during product head formation completely or major part born by counterdie step surface 1-3, doing so avoids this power and pass to push rod and push rod is destroyed.
Embodiment 2
As shown in Figure 2, cold headers counterdie is made former and later two parts by the present embodiment: with the counterdie front portion of the anterior 2-1 of nib, the counterdie rear portion with nib rear portion 2-2.The pore size of the anterior 2-1 of nib is equal with common counterdie pore size, and the pore size of nib rear portion 2-2 is less than the pore size of the anterior 2-1 of nib.When being installed and used by counterdie, between the anterior 2-1 and nib rear portion 2-2 of nib, there will be right angle platform terrace 2-3.
As shown in Figure 5, a kind of cold headers step mold use method of the present embodiment is: cold headers are put in counterdie front portion and the alignment of counterdie rear portion, when cold upset forming, end face 2-4 push rod being goed deep into one end of counterdie is arranged at the rear side of counterdie right angle platform terrace 2-3.Make like this axial force that passed over by patrix during product head formation completely or major part born by counterdie step surface 2-3, doing so avoids this power and pass to push rod and push rod is destroyed.
This embodiment is relative to embodiment 1, and mould is more easily processed.
Embodiment 3
As shown in Figure 3, cold headers counterdie is made of one by the present embodiment, and the carbide alloy internal mold in counterdie is made former and later two parts: with the carbide alloy internal mold front portion of the anterior 3-1 of nib, the carbide alloy internal mold rear portion with nib rear portion 3-2.The pore size of the anterior 3-1 of nib is equal with common counterdie pore size, and the pore size of nib rear portion 3-2 is less than the pore size of the anterior 3-1 of nib, is made into right angle platform terrace 3-3 between the anterior 3-1 and nib rear portion 3-2 of nib.
As shown in Figure 6, a kind of cold headers step mold use method of the present embodiment is: when cold upset forming, and end face 3-4 push rod being goed deep into one end of counterdie is arranged at the rear side of counterdie right angle platform terrace 3-3.Make like this axial force that passed over by patrix during product head formation completely or major part born by counterdie step surface 3-3, doing so avoids this power and pass to push rod and push rod is destroyed.
This embodiment is relative to embodiment 1, and mould is more easily processed; This embodiment is relative to embodiment 2, and die table is better, and step surface place occurs that the possibility of overlap is little.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model scope change and improve, and all should still belong within this patent covering scope.
Claims (4)
1. a cold headers step mould, it is characterized in that: the push rod comprising counterdie He be mated, described counterdie comprises internal mold and external mold, described internal mold is located in described external mold, described external mold is identical with the axis of described internal mold, the material of described internal mold is carbide alloy, step nib is provided with in described internal mold, described step is right angle step, described step nib is less than the internal diameter away from push rod insertion end part near the internal diameter of the part of described push rod insertion end, nib near described push rod insertion end in described internal mold extends to the end face of described external mold near described push rod insertion end, the large nib in aperture is identical with existing counterdie aperture.
2. cold headers step mould according to claim 1, is characterized in that: described counterdie is integral type structure.
3. cold headers step mould according to claim 1, is characterized in that: described counterdie is the split-type structural separated at the step surface place of described step nib.
4. cold headers step mould according to claim 1, is characterized in that: described internal mold is the split-type structural separated at the step surface place of described step nib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520666886.3U CN204953794U (en) | 2015-08-28 | 2015-08-28 | Step mould for cold heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520666886.3U CN204953794U (en) | 2015-08-28 | 2015-08-28 | Step mould for cold heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204953794U true CN204953794U (en) | 2016-01-13 |
Family
ID=55048891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520666886.3U Expired - Fee Related CN204953794U (en) | 2015-08-28 | 2015-08-28 | Step mould for cold heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204953794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127349A (en) * | 2015-08-28 | 2015-12-09 | 航天精工股份有限公司 | Step mould for cold heading machine and using method of step mould |
-
2015
- 2015-08-28 CN CN201520666886.3U patent/CN204953794U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127349A (en) * | 2015-08-28 | 2015-12-09 | 航天精工股份有限公司 | Step mould for cold heading machine and using method of step mould |
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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: 20160113 Termination date: 20160828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |