CN105964718A - Manufacturing method for plunger bushing and plunger bushing - Google Patents
Manufacturing method for plunger bushing and plunger bushing Download PDFInfo
- Publication number
- CN105964718A CN105964718A CN201610383830.6A CN201610383830A CN105964718A CN 105964718 A CN105964718 A CN 105964718A CN 201610383830 A CN201610383830 A CN 201610383830A CN 105964718 A CN105964718 A CN 105964718A
- Authority
- CN
- China
- Prior art keywords
- plunger bushing
- upper mold
- lower mold
- die cavity
- manufacture method
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/18—Making uncoated products by impact extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/003—Cooling or heating of work
Abstract
The invention provides a manufacturing method for a plunger bushing. Dies adopted in the method comprise an upper die and a lower die, a die cavity with the same shape as the plunger bushing is formed when the upper die and the lower die are closed, and through holes communicating with the die cavity are formed in the lower die and the upper die respectively and are collinear with the middle axis of the die cavity. The manufacturing method comprises the steps of placing a blank into the die cavity of the lower die, and enabling the upper die to get close to the lower die so that die closing is carried out and the blank is heated; placing a pushing block inside the through hole of the upper die and placing a pressing block inside the through hole of the lower die; fixing the upper die and the pushing block, exerting pressure towards the direction of the upper die on the pressing block, and enabling the blank to form the plunger bushing according to the shape of the die cavity. According to the manufacturing method, the blank is extruded inside the dies by the pressing block in one step for forming the plunger bushing, the production technology is simple, and the production efficiency is high.
Description
Technical field
The present invention relates to engine part equipment technical field, be specifically related to a kind of plunger bushing manufacture method and plunger bushing.
Background technology
Plunger bushing is the workpiece used with plunger pairing in the plunger and bare of injection pump of Diesel engine, by the precision-fit of plunger matching parts and plunger
High-speed motion, is just achieved the supercharging to fuel oil, is one of three big precision pairs in diesel engine.
In prior art, the manufacture of plunger bushing is generally shaped by repeatedly cold extrusion extra bus, is the most first shaped to plunger sleeve blank, passes through
Mach mode is shaped with fixed dimension.Thus the plunger bushing manufacture method complex procedures cost of prior art is high, process-cycle long utilization rate of equipment and installations
Low, production efficiency is low.
Summary of the invention
To this end, the invention solves the problems that plunger bushing manufacture method complex procedures cost of the prior art is high, the process-cycle, long utilization rate of equipment and installations was low, produced
The problem of inefficiency.
The invention provides a kind of plunger bushing manufacture method, use such as lower mold:
Described mould includes lower mold and upper mold, the die cavity that upper mold is identical with plunger bushing shape with formation during lower mold matched moulds, lower mold and upper mold all companies of forming
Lead to the through hole of the through hole of die cavity, lower mold and upper mold and the axis conllinear of die cavity；
Comprise the following steps:
Stock is put into the die cavity of lower mold, makes upper mold carry out matched moulds near lower mold, stock is heated；
Through hole in upper mold is built into pushing block, and the through hole in lower mold is built into briquetting；
Fix upper mold and pushing block, apply the pressure towards upper mold direction to briquetting, make stock form plunger bushing with the shape molding of die cavity.
As preferably, after stock molding forms plunger bushing, make upper mold away from lower mold, backward pushing block apply the thrust towards lower mold direction, make plunger
The set demoulding.
As preferably, the composition of stock is Cr15.
As preferably, described stock is cylindrical.
As preferably, pressure size is: 350 tons.
As preferably, the heating-up temperature to stock is 700 degrees Celsius～900 degrees Celsius.
As preferably, the die cavity of upper mold described in plunger bushing manufacture method is cylindrical, and the through-hole diameter of described upper mold is less than the die cavity of described upper mold
Diameter；
The die cavity of described lower mold has round rectangle part above and is positioned at the column part of lower section, and the through-hole diameter of described lower mold is less than described
The equal diameters of column part.
The invention provides a kind of plunger bushing, wherein: use above-mentioned plunger bushing manufacture method to prepare.
Relative to this prior art, the invention have the advantages that
This manufacture method the most once extrudes stock molding by briquetting and forms plunger bushing, and production technology is simple, and production efficiency is high.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to detailed description of the invention or prior art
In description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be the present invention plunger bushing manufacture method in the stock structural representation of inserting in die cavity；
Fig. 2 be the present invention plunger bushing manufacture method in structural representation after plunger bushing molding；
Description of reference numerals:
1-upper mold；2-lower mold；3-briquetting；4-pushing block；5-stock.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described embodiment is a present invention part
Embodiment rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ",
Orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplify description,
Rather than instruction or the device of hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of the present invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " install ", " being connected ", " connection " should
It is interpreted broadly, connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to be
Electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.General for this area
For logical technical staff, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
As long as just can mutually tie additionally, technical characteristic involved in invention described below difference embodiment does not constitutes conflict each other
Close.
One plunger bushing manufacture method of the present invention, uses such as lower mold, as shown in the figures 1 and 2:
Described mould includes lower mold 2 and upper mold 1, forms the die cavity identical with plunger bushing shape, lower mold 2 and upper mold during upper mold 1 mould 2-in-1 with lower mold
The 1 axis conllinear all forming the through hole being communicated to die cavity, the through hole of lower mold 2 and upper mold 1 and die cavity；
Comprise the following steps:
Stock 5 is put into the die cavity of lower mold 2, makes upper mold 1 carry out matched moulds near lower mold, stock 5 is heated；
Through hole in upper mold 1 is built into pushing block 4, and the through hole in lower mold 2 is built into briquetting 3；
Fix upper mold 1 and pushing block 4 (the F bed knife identified in upper mold 1 and pushing block 4 apply such as Fig. 1 and 2), to briquetting 3 apply towards
The pressure (the P pressure identified in briquetting 3 applies such as Fig. 1 and 2) in upper mold 1 direction, makes stock form plunger bushing with the shape molding of die cavity,
As shown in Figure 2.
Such scheme is the main design thought of the present invention, is the most once extruded stock 5 molding by briquetting 3 and forms plunger bushing, production technology
Simply, production efficiency is high.
Embodiment 1
The present embodiment provides a kind of plunger bushing manufacture method, uses such as lower mold:
Described mould includes lower mold 2 and upper mold 1, forms the die cavity identical with plunger bushing shape, lower mold 2 and upper mold during upper mold 1 mould 2-in-1 with lower mold
The 1 axis conllinear all forming the through hole being communicated to die cavity, the through hole of lower mold 2 and upper mold 1 and die cavity, the composition of stock is Cr15；
Comprise the following steps:
Stock 5 being put into the die cavity of lower mold 2, makes upper mold 1 carry out matched moulds near lower mold, heat stock 5, heating-up temperature is 700 to take the photograph
Family name's degree～900 degrees Celsius；
Through hole in upper mold 1 is built into pushing block 4, and the through hole in lower mold 2 is built into briquetting 3；
Fixing upper mold 1 and pushing block 4, apply the pressure towards upper mold 1 direction to briquetting 3, pressure size is: 350 tons, makes stock with die cavity
Shape molding formed plunger bushing.
Further, stock molding is formed after plunger bushing, make upper mold 1 away from lower mold 2, backward pushing block apply the thrust towards lower mold 2 direction,
Make the plunger bushing demoulding.
Preferably, described stock is cylindrical.
Preferably, the die cavity of upper mold described in plunger bushing manufacture method is the cylindrical plunger body part of shaping column plug sleeve (i.e. for), and described on
The through-hole diameter of mould is less than the diameter of the die cavity of described upper mold；
The die cavity of described lower mold has round rectangle part above and is positioned at the column part (thrust positioning body) of lower section, and described lower mold is logical
Bore dia is less than the equal diameters of described column part.
Embodiment 2
The present embodiment provides a kind of plunger bushing manufacture method, uses such as lower mold:
Described mould includes lower mold 2 and upper mold 1, forms the die cavity identical with plunger bushing shape, lower mold 2 and upper mold during upper mold 1 mould 2-in-1 with lower mold
The 1 axis conllinear all forming the through hole being communicated to die cavity, the through hole of lower mold 2 and upper mold 1 and die cavity, the composition of stock is Cr15；
Comprise the following steps:
Stock 5 being put into the die cavity of lower mold 2, makes upper mold 1 carry out matched moulds near lower mold, heat stock 5, heating-up temperature is 700 to take the photograph
Family name's degree～900 degrees Celsius；
Through hole in upper mold 1 is built into pushing block 4, and the through hole in lower mold 2 is built into briquetting 3；
Fixing upper mold 1 and pushing block 4, apply the pressure towards upper mold 1 direction to briquetting 3, pressure size is: 350 tons, makes stock with die cavity
Shape molding formed plunger bushing.
Further, stock molding is formed after plunger bushing, make upper mold 1 away from lower mold 2, backward pushing block apply the thrust towards lower mold 2 direction,
Make the plunger bushing demoulding.
Preferably, described stock is cylindrical.
Preferably, the die cavity of upper mold described in plunger bushing manufacture method is the cylindrical plunger body part of shaping column plug sleeve (i.e. for), and described on
The through-hole diameter of mould is less than the diameter of the die cavity of described upper mold；
The die cavity of described lower mold has round rectangle part above and is positioned at the column part (thrust positioning body) of lower section, and described lower mold is logical
Bore dia is less than the equal diameters of described column part.
Embodiment 3
The present embodiment provides a kind of plunger bushing manufacture method, uses such as lower mold:
Described mould includes lower mold 2 and upper mold 1, forms the die cavity identical with plunger bushing shape, lower mold 2 and upper mold during upper mold 1 mould 2-in-1 with lower mold
The 1 axis conllinear all forming the through hole being communicated to die cavity, the through hole of lower mold 2 and upper mold 1 and die cavity, the composition of stock is Cr15；
Comprise the following steps:
Stock 5 being put into the die cavity of lower mold 2, makes upper mold 1 carry out matched moulds near lower mold, heat stock 5, heating-up temperature is 700 to take the photograph
Family name's degree～900 degrees Celsius；
Through hole in upper mold 1 is built into pushing block 4, and the through hole in lower mold 2 is built into briquetting 3；
Fixing upper mold 1 and pushing block 4, apply the pressure towards upper mold 1 direction to briquetting 3, pressure size is: 350 tons, makes stock with die cavity
Shape molding formed plunger bushing.
Further, stock molding is formed after plunger bushing, make upper mold 1 away from lower mold 2, backward pushing block apply the thrust towards lower mold 2 direction,
Make the plunger bushing demoulding.
Preferably, described stock is cylindrical.
Preferably, the die cavity of upper mold described in plunger bushing manufacture method is the cylindrical plunger body part of shaping column plug sleeve (i.e. for), and described on
The through-hole diameter of mould is less than the diameter of the die cavity of described upper mold；
The die cavity of described lower mold has round rectangle part above and is positioned at the column part (thrust positioning body) of lower section, and described lower mold is logical
Bore dia is less than the equal diameters of described column part.
Embodiment 4
The present embodiment provides a kind of plunger bushing, uses the plunger bushing manufacture method according to any one of embodiment 1-3 to prepare.
Effect example
Using the plunger bushing manufacture method of embodiment 1-3, produce a plunger bushing, required time and service life are as shown in the table:
| Embodiment | Production time/min | Service life |
| Embodiment 1 | 12 seconds/ | 5000 |
| Embodiment 2 | 13 seconds/ | 5001 |
| Embodiment 3 | 11 seconds/ | 4998 |
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Common for art
For technical staff, can also make other changes in different forms on the basis of the above description.Here without also cannot be to all of reality
The mode of executing gives exhaustive.And the obvious change thus extended out or variation still in the protection domain of the invention among.
Claims (8)
1. a plunger bushing manufacture method, it is characterised in that use such as lower mold:
Described mould includes lower mold (2) and upper mold (1), the die cavity that upper mold (1) is identical with plunger bushing shape with formation during lower mold (2) matched moulds,
Lower mold (2) and upper mold (1) all form the through hole being communicated to die cavity, the through hole of lower mold (2) and upper mold (1) and the axis conllinear of die cavity；
Comprise the following steps:
Stock (5) is put into the die cavity of lower mold (2), makes upper mold (1) carry out matched moulds near lower mold, stock (5) is heated；
Through hole in upper mold (1) is built into pushing block (4), and the through hole in lower mold (2) is built into briquetting (3)；
Fix upper mold (1) and pushing block (4), apply the pressure towards upper mold (1) direction to briquetting (3), make stock become with the shape of die cavity
Type forms plunger bushing.
Plunger bushing manufacture method the most according to claim 1, it is characterised in that
Stock molding is formed after plunger bushing, make upper mold (1) away from lower mold (2), backward pushing block apply the thrust towards lower mold (2) direction, make
The plunger bushing demoulding.
Plunger bushing manufacture method the most according to claim 2, it is characterised in that:
The composition of stock is Cr15.
Plunger bushing manufacture method the most according to claim 1, it is characterised in that:
Described stock is cylindrical.
Plunger bushing manufacture method the most according to claim 1, it is characterised in that:
Pressure size is: 350 tons.
Plunger bushing manufacture method the most according to claim 1, it is characterised in that:
Heating-up temperature to stock is 700 degrees Celsius～900 degrees Celsius.
Plunger bushing manufacture method the most according to claim 1, it is characterised in that:
The die cavity of upper mold described in plunger bushing manufacture method is cylindrical (plunger body), and the through-hole diameter of described upper mold is less than the die cavity of described upper mold
Diameter；
The die cavity of described lower mold has round rectangle part above and is positioned at the column part (thrust positioning body) of lower section, and described lower mold is logical
Bore dia is less than the equal diameters of described column part.
8. a plunger bushing, it is characterised in that:
The plunger bushing manufacture method as described in any one of claim 1-7 is used to prepare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383830.6A CN105964718A (en) | 2016-06-02 | 2016-06-02 | Manufacturing method for plunger bushing and plunger bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610383830.6A CN105964718A (en) | 2016-06-02 | 2016-06-02 | Manufacturing method for plunger bushing and plunger bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105964718A true CN105964718A (en) | 2016-09-28 |
Family
ID=57010047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610383830.6A Pending CN105964718A (en) | 2016-06-02 | 2016-06-02 | Manufacturing method for plunger bushing and plunger bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105964718A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042364A (en) * | 1993-06-29 | 2000-03-28 | The Japan Steel Works, Ltd. | Mold assembly for manufacturing hollow parts |
| CN201423409Y (en) * | 2009-05-12 | 2010-03-17 | 庄海君 | Die for manufacturing set piston of hydraulic brake pump |
| CN201644690U (en) * | 2009-12-11 | 2010-11-24 | 上海工程技术大学 | Mould for local upsetting forming of metal bar |
| CN102151711A (en) * | 2010-12-15 | 2011-08-17 | 江苏太平洋精锻科技股份有限公司 | Upper die anti-cracking structure of closed type cold extrusion planetary gear die |
-
2016
- 2016-06-02 CN CN201610383830.6A patent/CN105964718A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042364A (en) * | 1993-06-29 | 2000-03-28 | The Japan Steel Works, Ltd. | Mold assembly for manufacturing hollow parts |
| CN201423409Y (en) * | 2009-05-12 | 2010-03-17 | 庄海君 | Die for manufacturing set piston of hydraulic brake pump |
| CN201644690U (en) * | 2009-12-11 | 2010-11-24 | 上海工程技术大学 | Mould for local upsetting forming of metal bar |
| CN102151711A (en) * | 2010-12-15 | 2011-08-17 | 江苏太平洋精锻科技股份有限公司 | Upper die anti-cracking structure of closed type cold extrusion planetary gear die |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |