CN103817331B - The device and method of powder metallurgy sintered material surface densification is realized by rolling - Google Patents
The device and method of powder metallurgy sintered material surface densification is realized by rolling Download PDFInfo
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- CN103817331B CN103817331B CN201410068695.7A CN201410068695A CN103817331B CN 103817331 B CN103817331 B CN 103817331B CN 201410068695 A CN201410068695 A CN 201410068695A CN 103817331 B CN103817331 B CN 103817331B
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Abstract
The invention discloses a kind of device being realized powder metallurgy sintered material surface densification by rolling, including work platforms, Power Component, rotational chuck, driven chuck and rolling assembly, it is provided with guide rail on described work platforms, rotational chuck and driven chuck are arranged on described work platforms, Power Component is connected with rotational chuck, rolling assembly is arranged between rotational chuck and driven chuck, and described rolling assembly includes the slide plate being connected on guide rail and is arranged on the rolling mechanism on described slide plate.Also disclose a kind of method realizing powder metallurgy sintered material surface densification, the present invention carries out clamping to the two ends of rolled material, the vibrations effectively reducing rolled material during rolling and processing and the phenomenon avoiding stress to bend, powdered metallurgical material surface can be produced good densification effect, and material property is improved significantly, rolling assembly can transverse shifting, can be used for the rolling and processing of major axis.
Description
Technical field
The present invention relates to the device and method of a kind of powder metallurgy sintered material surface densification,
Particularly to a kind of by rolling realize powder metallurgy sintered material surface densification device and
Method.
Background technology
The production process of prior powder metallurgy part is sintering after powder compacting.But tradition is burnt
The powdered metal parts density of knot is generally not higher than 7.2g/cm3, surface layer contains substantial amounts of hole
Gap, affects the serviceability of part.Along with the development of PM technique, propose much to carry
The method of high powdered metallurgical material density, such as power forging, high velocity compacted, T-P environment etc.,
But these technology produce apparatus expensive, production cost is high, limits powdered metal parts
Application.
Summary of the invention
It is an object of the invention to: provide a kind of simple in construction, manufacture processing cost low and operation
Easy realizes the device of powder metallurgy sintered material surface densification by rolling and uses this
The rolling depression method of device.
The purpose of the present invention is achieved through the following technical solutions: one realizes powder by rolling
The device of metallurgy sintered material surface densification, including work platforms, Power Component, rotation
Chuck, driven chuck and rolling assembly, described work platforms is provided with guide rail, rotates
Chuck and driven chuck are arranged on described work platforms, and Power Component is connected with rotational chuck,
Rolling assembly is arranged between rotational chuck and driven chuck, and described rolling assembly includes connecting
Slide plate on guide rail and be arranged on the rolling mechanism on described slide plate.
Preferably, described rolling assembly has radial feed bar, and radial feed bar is axially arranged with
Two oppositely oriented screw threads, described rolling mechanism is two and is oppositely arranged, two rolling mechanisms
Being connected to two spiral shells on contrary screw thread, radial feed bar is connected with Power Component.
Preferably, described rolling assembly has axial feed bar, and axial feed bar is provided with screw thread,
Described slide plate is connected on axial feed bar, and Power Component is connected with axial feed bar.
Preferably, described guide rail is provided with tailstock, tailstock has locking piece, described from
Dynamic chuck is arranged on tailstock and is oppositely arranged with rotational chuck.
Preferably, described driven chuck includes urceolus and drill chuck, arranges in described urceolus
Having bearing, drill chuck to be connected with bearing, urceolus is arranged on tailstock.
Preferably, described Power Component includes mair motor and the change being connected with described mair motor
Speed case, change speed gear box is connected with described rotational chuck.
Preferably, described rotational chuck is scroll chuck.
Preferably, described rolling mechanism includes milled head, pressure head connecting rod, inner sleeve, front
Sleeve, pressure transducer and rear end cap, milled head is connected in pressure head connecting rod, pressure head
Connecting rod lock onto in inner sleeve, and front sleeve is socketed in outside inner sleeve, and pressure transducer connects
It is connected after pressure head connecting rod and with rear end cap.
Preferably, described rolling mechanism also include rear sleeve, first piston, the second piston,
3rd piston and the pipe that is rigidly connected, rear sleeve is fixing with front sleeve to be connected, and rear end cap is fixed
Being connected to the rear end of rear sleeve, first piston is arranged in front sleeve and side and inner sleeve
And/or pressure head connecting rod is fixing connects, the second piston and the 3rd piston are arranged in rear sleeve,
First piston opposite side and the second piston connect, and the second piston is by the Guan Yu tri-that is rigidly connected
Piston connects, and described pressure transducer and the 3rd piston contact.
A kind of method realizing powder metallurgy sintered material surface densification, uses above-mentioned leading to
Cross rolling to realize the device of powder metallurgy sintered material surface densification and roll, two rolling
Relative the rolling at powder metallurgy sintered material surface of mechanism.
Present invention have the advantage that and effect:
1, a kind of dress being realized powder metallurgy sintered material surface densification by rolling of the present invention
Put the two ends to rolled material and carry out clamping, effectively reduce rolled material during rolling and processing
Vibrations and avoid the phenomenon that stress bends, it is possible to powdered metallurgical material surface is produced very well
Densification effect, and material property is improved significantly, rolling assembly can transverse shifting,
Can be used for the rolling and processing of major axis, and simple in construction, easy and simple to handle, processing cost is low.
2, improving powder metallurgy density method relative to other, the rolling and processing of the present invention is permissible
Improve the density of powder metallurgy sintered material surface, form surface compact layer, it might even be possible to be complete
Densification, produces strengthening effect, and material surface roughness can also be made to reduce, produce finishing
Effect.Form certain density gradient from the centripetal portion of piece surface, improve powdered metal parts
Mechanical property, extends the service life of part, has expanded the range of application of powdered metal parts.
Rolling and processing low cost, equipment is simple so that powder metallurgy surface densification technology becomes powder
One direction having very much using value of end Metallurgical Industry Development.
3, rolling can be detected in real time owing to the rolling mechanism of the present invention is provided with pressure transducer
Add the situation of change of power in man-hour, rolling mechanism be fixedly installed not over spring, suspension
Thing or hydraulic pressure transfer rolling power, therefore, it is possible to accurately record the rolling power applied when rolling starts
Size and remain the size of applying power after accurately recording rolling, rolling power is impact rolling effect
One important parameter of fruit, accurately measures rolling power size and contributes to energy during rolling and processing
Simply, facilitating and be accurately controlled the amount of feeding, milled head has high rigidity, therefore rolls
The workpiece surface roughness gone out is low and will not be deformed, rolling mechanism also have simple in construction,
Easy and simple to handle, the advantage of low cost of manufacture.
4, the present invention a kind of rolling depression method two rolling mechanism relative at powder metallurgy sintered material
Surface rolls, and during rolling, the active force to material can be cancelled out each other, it is to avoid material produces
Raw bending or rolling less than phenomenon.
Accompanying drawing explanation
Fig. 1 is the sectional view of the rolling mechanism of the present invention.
Fig. 2 is the structural representation of the rolling mechanism of the present invention.
Fig. 3 is the axonometric chart that the rolling mechanism of the present invention installs fixed plate and reinforcing plate.
Fig. 4 is the profile that the inner sleeve of the present invention is installed in front sleeve.
Fig. 5 is the schematic diagram of the ball-type milled head of the present invention.
Fig. 6 is that one of the present invention realizes powder metallurgy sintered material surface densification by rolling
The top view of device.
Fig. 7 is that one of the present invention realizes powder metallurgy sintered material surface densification by rolling
The front view of device.
Fig. 8 is the structural representation of the rolling assembly of the present invention.
Fig. 9 is the structural representation of the driven chuck of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but this
Bright embodiment is not limited to this.
Embodiment one:
As shown in figs 1-9, one realizes powder metallurgy sintered material surface densification by rolling
Device, including work platforms 31, Power Component, rotational chuck 32, driven chuck 33 with
And rolling assembly, described work platforms 31 is provided with guide rail 35, rotational chuck 32 and driven
Chuck 33 is arranged on described work platforms 31, and Power Component is connected with rotational chuck 32, rolling
Pressure assembly is arranged between rotational chuck 32 and driven chuck 33, and described rolling assembly includes even
The slide plate 36 that is connected on guide rail 35 and be arranged on the rolling mechanism 34 on described slide plate 36.Institute
State and on guide rail 35, be provided with tailstock 37, tailstock 37 has locking piece, described driven chuck 33
Being arranged on tailstock 37 and be oppositely arranged with rotational chuck 32, described driven chuck 33 includes urceolus
44 and drill chuck 43, in described urceolus 44 before and after is provided with bearing 45, drill chuck 43 and axle
Holding 45 to be connected, urceolus 44 is arranged on tailstock 37.Described rotational chuck 32 is scroll chuck.
The two ends of rolled material are carried out clamping, effectively rolled material during minimizing rolling and processing
The phenomenon shaken and avoid stress to bend, thus ensure that rolling puts in place.
Described Power Component include change speed gear box 39 that mair motor 38 is connected with described mair motor 38,
Axial feed motor 40 and force handle 41, change speed gear box 39 is connected with described rotational chuck 32.
Described rolling assembly has the radial feed bar 42 being connected with described force handle 41, radially enters
Being respectively equipped with two oppositely oriented screw threads axially back and forth to bar 42, described rolling mechanism 34 is two
Individual and be oppositely arranged, two rolling mechanisms 34 are connected to two spiral shells on contrary screw thread.Institute
State rolling assembly and there is the axial feed bar 46 being connected with described axial feed motor 40, axially
Feed bar 46 is provided with screw thread, and described slide plate 36 is connected on axial feed bar 46.
Embodiment two:
As Figure 1-5, described rolling mechanism 34 includes milled head 1, pressure head connecting rod 2, interior
Sleeve 3, front sleeve 4, pressure transducer 5, rear sleeve 6, first piston the 7, second piston 8,
3rd piston 9, be rigidly connected pipe 10 and rear end cap 11, and milled head 1 is connected to pressure head and connects
On bar 2, pressure head connecting rod 2 lock onto in inner sleeve 3, and front sleeve 4 is socketed in outside inner sleeve 3,
Pressure transducer 5 is connected to the rear of pressure head connecting rod 2, and rear sleeve 6 is fixing with front sleeve 4 even
Connecing, rear end cap 11 is fixedly connected on the rear end of rear sleeve 6, and first piston 7 is arranged at front sleeve 4
In and side and inner sleeve 3 and/or pressure head connecting rod 2 is fixing is connected, the second piston 8 and the
Three pistons 9 are arranged in rear sleeve 6, and first piston 7 opposite side and the second piston 8 connect, the
Two pistons 8 are connected with the 3rd piston 9 by the pipe 10 that is rigidly connected, and described pressure transducer 5 connects
Contact on rear end cap 11 and with the 3rd piston 9.
Between described second piston 8 and the 3rd piston 9, there is certain spacing and can connect bullet
Spring, can switch to elastic rolling on demand, and the pipe 10 that is rigidly connected after connecting spring can be torn open
Remove.
Described front sleeve 4 is provided with groove, and inner sleeve 3 is internal be square hole, profile be cylinder and
The groove of corresponding front sleeve 4 is provided with and limits the guide pillar that inner sleeve 3 rotates in front sleeve 4.
Described milled head 1 is ball-type milled head, and pressure head connecting rod 2 front end face has dug hemisphere
The milled head mounting groove of shape, milled head mounting groove connects that milled head is anti-raises one's hat 21, rolling
Head mounting groove is placed with rolling ball 22 and described ball-type milled head, ball-type milled head
Part protrudes from the anti-21 outer and ball-type milled heads and milled head is anti-raises one's hat between 21 of raising one's hat of milled head
Being provided with anticreep ball 23, anticreep ball 23 contacts with ball-type milled head.
Described milled head 1 can also be roller milled head, and pressure head connecting rod 2 front end connects to be had
Roller bearing 12, roller milled head 1 is connected to the front end of pressure head connecting rod 2 by described roller bearing 12.
Also include being fixedly connected on rolling mechanism 34 is solid for fixing the two of rolling mechanism 34
Determining 13, eight clamping screws 14 of plate and outer sleeve 15, two fixed plate both sides are connected to two
Reinforcing plate 16.Pressure head connecting rod 2 is lock onto in inner sleeve 3, often by described clamping screw 14
Four clamping screws 14 are one group, and often group is around between the circumferentially disposed each clamping screw 14 of inner sleeve 3
It is separated by 90 °, to ensure to lock pressure head connecting rod 2, arranges before and after two groups of clamping screws 14,
Preceding clamping screw 14 protrudes from inner sleeve 3, and posterior clamping screw 14 is inlaid into inner sleeve
In 3, the most preceding clamping screw 14 plays the effect limiting stroke, posterior clamping screw
14 can avoid hindering the slip of inner sleeve 3.Described outer sleeve 15 is socketed on rear sleeve 6 and front
By fixed together to rear sleeve 6 and front sleeve 4 on sleeve 4.Described first piston 7 matched in clearance
In front sleeve 4, described second piston 8 and the 3rd piston 9 matched in clearance are in rear sleeve 6.
It is provided with between described rear end cap 11 and rear sleeve 6 for supplying the data wire of pressure transducer 5 to stretch out
Wire casing 18.
The work process of the present invention and operation principle: in rolling process, rolling power is successively from rolling
Pressure head, pressure head connecting rod, first piston, the second piston, the pipe and the 3rd that is rigidly connected are lived
Plug is delivered to pressure transducer, and pressure transducer rear end connects has rear end cap, not over bullet
Spring, hanger or hydraulic pressure transfer rolling power, apply therefore, it is possible to accurately record when rolling starts
The size of rolling power and remain the size of applying power after accurately recording rolling, and the power that rolls is
One important parameter of impact rolling effect, accurately measures rolling power size and contributes to rolling
Pressure adds man-hour can be simple, convenient and accurately control the amount of feeding, and milled head has high rigidity,
Therefore the workpiece surface roughness rolled out is low and will not be deformed, and also has structure letter
Single, easy and simple to handle, the advantage of low cost of manufacture.
Embodiment three:
A kind of method realizing powder metallurgy sintered material surface densification, uses described
The device being realized powder metallurgy sintered material surface densification by rolling is rolled, two rollings
Relative the rolling at powder metallurgy sintered material surface of press mechanism.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are also
Being not restricted to the described embodiments, other any spirit without departing from the present invention is with former
Change that reason is lower to be made, modify, substitute, combine, simplify, all should be the displacement side of equivalence
Formula, within being included in protection scope of the present invention.
Claims (9)
1. a device for powder metallurgy sintered material surface densification is realized by rolling, its
It is characterised by: include work platforms, Power Component, rotational chuck, driven chuck and rolling
Pressure assembly, described work platforms is provided with guide rail, rotational chuck and driven chuck and is arranged on
On described work platforms, Power Component is connected with rotational chuck, and rolling assembly is arranged at rotation
Between chuck and driven chuck, described rolling assembly include the slide plate that is connected on guide rail and
It is arranged on the rolling mechanism on described slide plate；
Described rolling assembly has radial feed bar, and radial feed bar is axially arranged with two rotation direction phases
Anti-screw thread, described rolling mechanism is two and is oppositely arranged, and two rolling mechanisms connect respectively
In two spiral shells on contrary screw thread, radial feed bar is connected with Power Component.
One the most according to claim 1 realizes powder metallurgy sintered material by rolling
The device of surface densification, it is characterised in that: described rolling assembly has axial feed bar,
Axial feed bar is provided with screw thread, and described slide plate is connected on axial feed bar, Power Component with
Axial feed bar connects.
One the most according to claim 1 realizes powder metallurgy sintered material by rolling
The device of surface densification, it is characterised in that: it is provided with tailstock on described guide rail, on tailstock
Having locking piece, described driven chuck is arranged on tailstock and is oppositely arranged with rotational chuck.
One the most according to claim 3 realizes powder metallurgy sintered material by rolling
The device of surface densification, it is characterised in that: described driven chuck includes urceolus and drill point
Head, is provided with bearing in described urceolus, drill chuck is connected with bearing, and urceolus is arranged on tail
On seat.
One the most according to claim 1 realizes powder metallurgy sintered material by rolling
The device of surface densification, it is characterised in that: described Power Component include mair motor and with
The change speed gear box that described mair motor connects, change speed gear box is connected with described rotational chuck.
One the most according to claim 1 realizes powder metallurgy sintered material by rolling
The device of surface densification, it is characterised in that: described rotational chuck is scroll chuck.
One the most according to claim 1 realizes powder metallurgy sintered material by rolling
The device of surface densification, it is characterised in that: described rolling mechanism includes milled head, pressure head
Connecting rod, inner sleeve, front sleeve, pressure transducer and rear end cap, milled head is connected to
In pressure head connecting rod, pressure head connecting rod lock onto in inner sleeve, and front sleeve is socketed in inner sleeve
Outward, it is connected after pressure transducer is connected to pressure head connecting rod and with rear end cap.
One the most according to claim 7 realizes powder metallurgy sintered material by rolling
The device of surface densification, it is characterised in that: described rolling mechanism also include rear sleeve,
One piston, the second piston, the 3rd piston and the pipe that is rigidly connected, rear sleeve is solid with front sleeve
Fixed connection, rear end cap is fixedly connected on the rear end of rear sleeve, and first piston is arranged at front sleeve
In and side and inner sleeve and/or pressure head connecting rod is fixing is connected, the second piston and the 3rd work
Plug is arranged in rear sleeve, and first piston opposite side and the second piston connect, and the second piston leads to
Crossing Guan Yu tri-piston that is rigidly connected to connect, described pressure transducer and the 3rd piston contact.
9. the method realizing powder metallurgy sintered material surface densification, it is characterised in that
Use and realize powder metallurgy sintered material surface densification by rolling described in claim 1
Device roll, relative the carrying out at powder metallurgy sintered material surface of two rolling mechanisms
Rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068695.7A CN103817331B (en) | 2014-02-27 | 2014-02-27 | The device and method of powder metallurgy sintered material surface densification is realized by rolling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068695.7A CN103817331B (en) | 2014-02-27 | 2014-02-27 | The device and method of powder metallurgy sintered material surface densification is realized by rolling |
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| CN103817331A CN103817331A (en) | 2014-05-28 |
| CN103817331B true CN103817331B (en) | 2016-09-21 |
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| CN201410068695.7A Active CN103817331B (en) | 2014-02-27 | 2014-02-27 | The device and method of powder metallurgy sintered material surface densification is realized by rolling |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586478A (en) * | 2016-02-25 | 2016-05-18 | 上海大学 | Device for removing powder added material production stress in real time by rolling method |
| US20170266726A1 (en) * | 2016-03-17 | 2017-09-21 | GM Global Technology Operations LLC | Method and system for surface densification |
| CN108500277A (en) * | 2018-03-28 | 2018-09-07 | 上海汽车粉末冶金有限公司 | A kind of preparation method of powder metallurgy surface densified parts |
| CN112692288B (en) * | 2020-12-15 | 2023-06-06 | 扬州保来得科技实业有限公司 | Device and method for improving surface support rate of powder metallurgy product |
| CN113020600B (en) * | 2021-03-09 | 2023-01-10 | 吉凯恩(丹阳)工业有限公司 | Powder metallurgy gear rolling densification device |
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|---|---|---|---|---|
| EP1052043A2 (en) * | 1999-05-10 | 2000-11-15 | Daido Tokushuko Kabushiki Kaisha | Silicon steel plate and method for producing the same |
| CN201519765U (en) * | 2009-10-30 | 2010-07-07 | 华南理工大学 | Powder metallurgy high-speed pressing press based on mechanical spring energy storage |
| CN101905322A (en) * | 2010-07-23 | 2010-12-08 | 华南理工大学 | Method and device for pressing and forming powder at high temperature and high speed in vacuum |
| CN102179515A (en) * | 2011-05-19 | 2011-09-14 | 华南理工大学 | Method for increasing density of stainless steel powder metallurgy part |
| CN203711849U (en) * | 2014-02-27 | 2014-07-16 | 华南理工大学 | Device for densifying surface of powder metallurgy sintering material through rolling |
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2014
- 2014-02-27 CN CN201410068695.7A patent/CN103817331B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1052043A2 (en) * | 1999-05-10 | 2000-11-15 | Daido Tokushuko Kabushiki Kaisha | Silicon steel plate and method for producing the same |
| CN201519765U (en) * | 2009-10-30 | 2010-07-07 | 华南理工大学 | Powder metallurgy high-speed pressing press based on mechanical spring energy storage |
| CN101905322A (en) * | 2010-07-23 | 2010-12-08 | 华南理工大学 | Method and device for pressing and forming powder at high temperature and high speed in vacuum |
| CN102179515A (en) * | 2011-05-19 | 2011-09-14 | 华南理工大学 | Method for increasing density of stainless steel powder metallurgy part |
| CN203711849U (en) * | 2014-02-27 | 2014-07-16 | 华南理工大学 | Device for densifying surface of powder metallurgy sintering material through rolling |
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Effective date of registration: 20220106 Address after: 510700 No. 67, Hefeng Road, Huangpu District, Guangzhou, Guangdong Patentee after: GUANGDONG YUEHAI HUAJIN TECHNOLOGY Co.,Ltd. Address before: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: SOUTH CHINA University OF TECHNOLOGY |