CN110434342A - A kind of powdered metal part surface processing device - Google Patents
A kind of powdered metal part surface processing device Download PDFInfo
- Publication number
- CN110434342A CN110434342A CN201910835234.0A CN201910835234A CN110434342A CN 110434342 A CN110434342 A CN 110434342A CN 201910835234 A CN201910835234 A CN 201910835234A CN 110434342 A CN110434342 A CN 110434342A
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- wall
- unit
- gear
- hole
- workbench
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/241—Chemical after-treatment on the surface
- B22F2003/242—Coating
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention provides a kind of powdered metal part surface processing devices, including workbench, position-limiting unit, support unit, driving unit and processing unit；The workbench is evenly arranged with trapezoidal hole along its circumferencial direction, the upper center of workbench is equipped with position-limiting unit, the left side outer wall of workbench is equipped with support unit, the upper end of support unit is provided with driving unit, the lower end of driving unit is connected with processing unit；The present invention mostly uses outer method of clamping that gear is fixed when can solve existing equipment to gear surface processing, is not easy to handle the outer surface of gear, and treatment process middle gear is easy to happen shaking, influences subsequent surface treatment quality；And existing equipment to gear surface processing when influenced by gear structure, it cannot be fully erased by the burr in gear inter-lobe clearance, treatment effect is bad, and treatment effeciency is low, and the problems such as cannot maintaining in time gear surface coating lubricating oil after the completion of being surface-treated.
Description
Technical field
The present invention relates to metal working technical area, in particular to a kind of powdered metal part surface processing device.
Background technique
Powder metallurgy is to use metal powder as raw material, by a kind of industrial skill for shaping and being sintered production metal product
Art.Porous, half fine and close or full dense product, such as bearing, gear, cam can be directly prepared into PM technique.By
In sintered metal product surface is primarily present a large amount of holes or some burr hard spots the defects of, in product using preceding needing to carry out it
Surface treatment, is primarily present following problems when especially handling gear surface:
It mostly uses outer method of clamping that gear is fixed when 1. existing equipment is to gear surface processing, is not easy to gear
Outer surface handled, and treatment process middle gear is easy to happen shaking, influences subsequent surface treatment quality；
It is influenced when 2. existing equipment is to gear surface processing by gear structure, it cannot be by the burr in gear inter-lobe clearance
It is fully erased, cause treatment effect bad, treatment effeciency is low, and cannot smear in time gear surface after the completion of being surface-treated
Lubricating oil is maintained.
Summary of the invention
(1) technical problems to be solved
The present invention mostly uses outer method of clamping that gear is fixed when can solve existing equipment to gear surface processing,
It is not easy to handle the outer surface of gear, and treatment process middle gear is easy to happen shaking, influences subsequent surface treatment
Quality；And existing equipment to gear surface processing when influenced by gear structure, cannot be by the burr in gear inter-lobe clearance
Fully erased, treatment effect is bad, and treatment effeciency is low, and cannot smear gear surface and lubricate in time after the completion of being surface-treated
The problems such as oil is maintained.
(2) technical solution
To achieve the goals above, the present invention uses following technical scheme, a kind of powdered metal part surface treatment dress
It sets, including workbench, position-limiting unit, support unit, driving unit and processing unit；The workbench is equal along its circumferencial direction
Even to be provided with trapezoidal hole, the upper center of workbench is equipped with position-limiting unit, and it is single that the left side outer wall of workbench is equipped with support
Member is provided with driving unit positioned at the upper end of support unit, and the lower end of driving unit is connected with processing unit.
The position-limiting unit include limiting plate, adjusting rod, adjustment spring, spacing block set, limit spring, motion bar and
Compressed spring；Adjusting rod is equipped with by sliding matching mode inside the limiting plate, it is symmetrical on outer wall in the middle part of adjusting rod
It is provided with semicircle groove, the adjusting rod outer wall positioned at the underface of semicircle groove is raised structures, and adjusting rod is by adjusting bullet
Spring is connected with the bottom end inner wall of limiting plate, and the adjustment spring is located inside limiting plate；On the side wall of limiting plate
It is symmetrically arranged with limit spring, the top of limit spring is equipped with spacing block set, and spacing block set is matched with semicircle groove；Institute
The motion bar stated is symmetrically mounted in the middle through-hole of limiting plate by sliding matching mode, and one end of motion bar and adjusting
Bar matches, and is arranged with compressed spring on the other end outer wall of motion bar；First gear is placed on before gear surface processing
On workbench, it is limited by limiting plate, prevents gear from rotating in surface treatment process, and passes through pressing
Adjusting rod matches semicircle convex block with motion bar motion bar is released limiting plate, it is made to be in contact with the upper surface of gear,
To prevent gear from moving up and down in surface treatment process；Gear can be completely fixed in work by the position-limiting unit of setting
It on platform, prevents gear from shaking in surface treatment process, ensure that the surface treatment quality of subsequent gear.
The support unit includes bottom plate, adjusts cylinder and support plate；The bottom plate is mounted on the left side of workbench
On outer wall, bottom plate upper end is equipped with adjusting cylinder, and the top for adjusting cylinder is equipped with support plate, and the support plate right end opens up
There is circular through hole；The height of processing unit can be adjusted by adjusting cylinder, increased the height adjustment range of processing unit, made
Processing unit is separated with workbench, convenient for gear surface blowing before and after the processing and feeding.
The driving unit includes driving motor, rotation axis, support frame, rotating disc, adjustable shelf and drive rod；Described
Driving motor is mounted on the upper end of support plate by motor cabinet, and the output shaft of driving motor passes through one end of shaft coupling and rotation axis
Spindle nose is connected, and the middle part of rotation axis is installed on the support frame by bearing, and the other end spindle nose of rotation axis by flange and turns
Moving plate is connected；The support frame is mounted on the upper end of support plate；The adjustable shelf is mounted on by sliding matching mode
In support plate, the T-shaped structure of adjustable shelf, and the upper end of adjustable shelf offers U-shaped through-hole；Described drive rod one end, which is mounted on, to be turned
On Moving plate, and the other end of drive rod is located in U-shaped through-hole；Turn disc is driven by driving motor, and passes through drive rod
It is matched with adjustable shelf and drives processing unit mobile；The driving unit of setting can make processing unit continue back and forth to move up and down, In
Guarantee to improve surface processing efficiency under the premise of surface treatment quality.
The processing unit includes firm banking, fixed block, sponge block, piston head, piston rod fixed disc and U-shaped set
Cylinder；The upper end of the firm banking is connected with the bottom end of driving unit, and the section of firm banking is inverted U shape structure, fixed bottom
The upper end of seat offers annular groove, is provided with screw thread on annular groove inner wall, the inner wall positioned at firm banking is along its circumference side
To being evenly arranged with fixed block, the trapezoidal structure in the section of fixed block, and fixed block is matched with the trapezoidal hole of workbench, position
Sponge block is provided in the middle part of fixed block, upper end of fixing block offers circular trough, piston head is provided in circular trough, institute
On the piston rod, the top of piston rod is connected on fixed disc, is covered on the outer wall of fixed disc for the piston head connection stated
Equipped with bearing, bearing outer wall is arranged with U-shaped sleeve, and the U-shaped sleeve is installed on the fixed base by thread fiting mode
In the annular groove at end.
It is L-shaped through-hole that section is uniformly provided with inside the annular groove of the firm banking upper end, and on through-hole wall
It is provided with oiliness film, the bottom end of through-hole is connected with the top of sponge block；Firm banking is driven to move up and down by adjustable shelf, from
And sponge block is driven to be surface-treated in gear surface reciprocating motion to gear, when the burr removing of gear surface after, lead to
It crosses manual type to pour into lubricating oil in annular groove, and drives piston head to move up by turn-knob U-shaped sleeve, to keep lubricating oil logical
It crosses L shape through-hole and flows to sponge block；The on-off of lubricating oil is adjusted in the piston head of setting, and then controls the usage amount of lubricating oil；If
On the one hand the oiliness film set can reduce resistance when lubricating oil flows in L shape through-hole, on the other hand can prevent in lubricating oil
Impurity is adhered on L shape through-hole wall and causes to block.
Preferably, the trapezoidal structure in sponge block section, sponge block are internally provided with guide groove, the top of guide groove
V-shaped structure is evenly arranged with inclined pilot hole positioned at sponge block outer wall from top to bottom, and pilot hole is connected with guide groove
It is logical；The trapezoidal structure in sponge block section increases its contact area with gear, and the guide groove of setting can accelerate lubricating oil inflow
The speed of sponge block；The pilot hole of setting can make further amounts of lubricating oil be applied to gear surface, reduce the number of dropouts of lubricating oil.
(3) beneficial effect
1. the present invention drives firm banking to move up and down by driving motor, so that sponge block continues to carry out in gear surface
It moves back and forth, and the trapezoidal structure of sponge block forms complementary with gear structure, increases the contact area of sponge block and gear, makes
Must be more comprehensive to the surface treatment of gear, treatment effeciency is higher；
2. gear is completely fixed on the table by the position-limiting unit that the present invention is arranged by way of interior clamping, it is therefore prevented that
Gear shakes in surface treatment process, and convenient for handling the outer surface of gear, it is ensured that the table of subsequent gear
Surface treatment quality；
3. the L shape through-hole wall in firm banking of the present invention is provided with oiliness film, it can prevent lubricating oil in flow process
It blocks, lubricating oil is made faster to flow to sponge block, the guide groove and pilot hole being arranged inside sponge block can reduce lubrication
The loss of oil is realized to gear surface treated maintenance work.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is main view position cross-sectional view of the invention；
Fig. 2 is schematic perspective view of the invention；
Fig. 3 is head-down position cross-sectional view of the invention；
Fig. 4 is the cross-sectional view of position-limiting unit of the present invention.
Specific embodiment
Below with reference to the accompanying drawings the embodiment of the present invention is illustrated.In the process, for ensure illustrate definition and
Convenience, we may the width to lines in diagram or constituent element the mark exaggerated of size.
In addition, term hereinafter is defined based on the function in the present invention, it can be according to the intention of user, fortune user
Or convention and difference.Therefore, these terms are defined based on the full content of this specification.
As shown in Figures 1 to 4, a kind of powdered metal part surface processing device, including workbench 1, position-limiting unit 2,
Support unit 3, driving unit 4 and processing unit 5；The workbench 1 is evenly arranged with trapezoidal hole, work along its circumferencial direction
The upper center for making platform 1 is equipped with position-limiting unit 2, and the left side outer wall of workbench 1 is equipped with support unit 3, is located at support unit 3
Upper end be provided with driving unit 4, the lower end of driving unit 4 is connected with processing unit 5.
The position-limiting unit 2 includes limiting plate 21, adjusting rod 22, adjustment spring 23, spacing block set 24, limit spring
25, motion bar 26 and compressed spring 27；Adjusting rod 22 is equipped with by sliding matching mode inside the limiting plate 21, is adjusted
It is symmetrically arranged with semicircle groove on 22 middle part outer wall of pole, 22 outer wall of adjusting rod positioned at the underface of semicircle groove is protrusion knot
Structure, and adjusting rod 22 is connected by adjustment spring 23 with the bottom end inner wall of limiting plate 21, the adjustment spring 23 is located at
Inside limiting plate 21；Limit spring 25 is symmetrically arranged on the side wall of limiting plate 21, the top of limit spring 25 is equipped with
Spacing block set 24, and spacing block set 24 is matched with semicircle groove；The motion bar 26 is symmetrically pacified by sliding matching mode
In the middle through-hole of limiting plate 21, and one end of motion bar 26 is matched with adjusting rod 22, the other end of motion bar 26
Compressed spring 27 is arranged on outer wall；First gear is placed on workbench 1 before gear surface processing, passes through limiting plate
21 pairs its limit, prevent gear from rotating in surface treatment process, and by press adjusting rod 22 make semicircle convex block
It is matched with motion bar 26 and motion bar 26 is released into limiting plate 21, so that it is in contact with the upper surface of gear, to prevent tooth
Wheel moves up and down in surface treatment process；Gear can be completely fixed on workbench 1 by the position-limiting unit 2 of setting, be prevented
Only gear shakes in surface treatment process, ensure that the surface treatment quality of subsequent gear.
The support unit 3 includes bottom plate 31, adjusts cylinder 32 and support plate 33；The bottom plate 31 is mounted on work
On the left side outer wall of platform 1,31 upper end of bottom plate, which is equipped with, adjusts cylinder 32, and the top for adjusting cylinder 32 is equipped with support plate 33, institute
33 right end of support plate stated offers circular through hole；The height of processing unit 5 can be adjusted by adjusting cylinder 32, increase place
The height adjustment range for managing unit 5, separates processing unit 5 with workbench 1, convenient for the blowing of gear surface before and after the processing and takes
Material.
The driving unit 4 includes driving motor 41, rotation axis 42, support frame 43, rotating disc 44, adjustable shelf 45 and drives
Lever 46；The driving motor 41 is mounted on the upper end of support plate 33 by motor cabinet, and the output shaft of driving motor 41 passes through
Shaft coupling is connected with one end spindle nose of rotation axis 42, and the middle part of rotation axis 42 is mounted on support frame 43 by bearing, rotation
The other end spindle nose of axis 42 is connected by flange with rotating disc 44；The support frame 43 is mounted on the upper end of support plate 33；
The adjustable shelf 45 is mounted in support plate 33 by sliding matching mode, the T-shaped structure of adjustable shelf 45, and adjustable shelf 45
Upper end offers U-shaped through-hole；Described 46 one end of drive rod is mounted on rotating disc 44, and the other end of drive rod 46 is located at U
In shape through-hole；It drives rotating disc 44 to rotate by driving motor 41, and is matched at drive by drive rod 46 with adjustable shelf 45
It is mobile to manage unit 5；The driving unit 4 of setting can make processing unit 5 continue back and forth to move up and down, and guarantee surface treatment quality
Under the premise of improve surface processing efficiency.
The processing unit 5 is fixed including firm banking 51, fixed block 52, sponge block 53, piston head 54, piston rod 55
Plectane 56 and U-shaped sleeve 57；The upper end of the firm banking 51 is connected with the bottom end of driving unit 4, and firm banking 51 is cut
Face is inverted U shape structure, and the upper end of firm banking 51 offers annular groove, is provided with screw thread on annular groove inner wall, is located at solid
The inner wall for determining pedestal 51 is evenly arranged with fixed block 52, the trapezoidal structure in the section of fixed block 52 along its circumferencial direction, and fixes
Block 52 is matched with the trapezoidal hole of workbench 1, the middle part of fixed block 52 is provided with sponge block 53,52 upper end of fixed block is opened
Equipped with circular trough, piston head 54 is provided in circular trough, the piston head 54 is connected on piston rod 55, piston rod 55
Top be connected on fixed disc 56, bearing is arranged on the outer wall of fixed disc 56, bearing outer wall is arranged with U-shaped set
Cylinder 57, the U-shaped sleeve 57 is mounted in the annular groove of 51 upper end of firm banking by thread fiting mode；The fixation
It is L-shaped through-hole that section is uniformly provided with inside the annular groove of 51 upper end of pedestal, and oiliness film is provided on through-hole wall, through-hole
Bottom end be connected with the top of sponge block 53；Firm banking 51 is driven to move up and down by adjustable shelf 45, to drive sponge
Block 54 is surface-treated gear in gear surface reciprocating motion, when the burr removing of gear surface after, passes through artificial side
Formula pours into lubricating oil in annular groove, and drives piston head 55 to move up by turn-knob U-shaped sleeve 52, so that lubricating oil be made to pass through L
Shape through-hole flows to sponge block 54；The on-off of lubricating oil is adjusted in the piston head 55 of setting, and then controls the usage amount of lubricating oil；If
On the one hand the oiliness film set can reduce resistance when lubricating oil flows in L shape through-hole, on the other hand can prevent in lubricating oil
Impurity is adhered on L shape through-hole wall and causes to block；The trapezoidal structure in 53 section of sponge block is arranged inside sponge block 53
There is guide groove, the V-shaped structure in the top of guide groove is evenly arranged with inclined guiding positioned at 53 outer wall of sponge block from top to bottom
Hole, and pilot hole is connected with guide groove；The trapezoidal structure in 54 section of sponge block increases its contact area with gear, setting
Guide groove can accelerate lubricating oil flow into sponge block 54 speed；The pilot hole of setting can make further amounts of lubricating oil be applied to tooth
Wheel surface reduces the number of dropouts of lubricating oil.
When work；Firstly, metalwork is placed on workbench 1 by artificial mode, and presses adjusting rod 22 and will live
The release of lever 26 is completely fixed metalwork；
Then, processing unit 5 is moved to suitable position by adjusting cylinder 32, made on fixed block 53 and workbench 1
Trapezoidal hole matches, and starts driving motor 41 and drive sponge block 54 mobile to be surface-treated to metalwork surface；Table
After the completion of surface treatment, lubricating oil is poured into the annular groove of processing unit seat 51, piston head 55 is driven by turn-knob U-shaped sleeve 52
It moves up, so that lubricating oil flows to sponge block 54, and metalwork surface is smeared, complete the subsequent maintenance work of metalwork；
Finally, moving on to certain position by adjusting cylinder 32 on processing unit 5, removing metalwork and carrying out stacking i.e.
It can.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of powdered metal part surface processing device, including workbench (1), position-limiting unit (2), support unit (3), drive
Moving cell (4) and processing unit (5)；It is characterized by: the workbench (1) is evenly arranged with trapezoidal lead to along its circumferencial direction
Hole, the upper center of workbench (1) are equipped with position-limiting unit (2), and the left side outer wall of workbench (1) is equipped with support unit (3),
It is provided with driving unit (4) positioned at the upper end of support unit (3), the lower end of driving unit (4) is connected with processing unit (5)；Its
In:
The processing unit (5) includes firm banking (51), fixed block (52), sponge block (53), piston head (54), piston rod
(55) fixed disc (56) and U-shaped sleeve (57)；The upper end of the firm banking (51) is connected with the bottom end of driving unit (4)
It connects, the section of firm banking (51) is inverted U shape structure, and the upper end of firm banking (51) offers annular groove, is located in annular groove
Screw thread is provided on wall, the inner wall for being located at firm banking (51) is evenly arranged with fixed block (52), fixed block along its circumferencial direction
(52) the trapezoidal structure in section, and fixed block (52) is matched with the trapezoidal hole of workbench (1), is located at fixed block (52)
Middle part is provided with sponge block (53), and fixed block (52) upper end offers circular trough, and piston head (54) are provided in circular trough,
The piston head (54) is connected on piston rod (55), and the top of piston rod (55) is connected on fixed disc (56), is located at
Bearing is arranged on the outer wall of fixed disc (56), bearing outer wall is arranged with U-shaped sleeve (57), and the U-shaped sleeve (57) is logical
Thread fiting mode is crossed to be mounted in the annular groove of firm banking (51) upper end；
The position-limiting unit (2) includes limiting plate (21), adjusting rod (22), adjustment spring (23), spacing block set (24), limit
Position spring (25), motion bar (26) and compressed spring (27)；The limiting plate (21) is internal to be pacified by sliding matching mode
Equipped with adjusting rod (22), it is symmetrically arranged with semicircle groove on outer wall in the middle part of adjusting rod (22), positioned at the underface of semicircle groove
Adjusting rod (22) outer wall is raised structures, and adjusting rod (22) passes through the bottom end inner wall of adjustment spring (23) and limiting plate (21)
It is connected, it is internal that the adjustment spring (23) is located at limiting plate (21)；It is symmetrically arranged on the side wall of limiting plate (21)
Limit spring (25), the top of limit spring (25) are equipped with spacing block set (24), and spacing block set (24) and semicircle groove phase
Cooperation；The motion bar (26) is symmetrically mounted in the middle through-hole of limiting plate (21) by sliding matching mode, and living
One end of lever (26) is matched with adjusting rod (22), and compressed spring (27) are arranged on the other end outer wall of motion bar (26).
2. a kind of powdered metal part surface processing device according to claim 1, it is characterised in that: the support
Unit (3) includes bottom plate (31), adjusts cylinder (32) and support plate (33)；The bottom plate (31) is mounted on workbench (1)
On the outer wall of left side, bottom plate (31) upper end, which is equipped with, adjusts cylinder (32), and the top for adjusting cylinder (32) is equipped with support plate (33),
Described support plate (33) right end offers circular through hole.
3. a kind of powdered metal part surface processing device according to claim 1, it is characterised in that: the driving
Unit (4) includes driving motor (41), rotation axis (42), support frame (43), rotating disc (44), adjustable shelf (45) and drive rod
(46)；The driving motor (41) is mounted on the upper end of support plate (33), the output shaft of driving motor (41) by motor cabinet
It is connected by shaft coupling with one end spindle nose of rotation axis (42), the middle part of rotation axis (42) is mounted on support frame by bearing
(43) on, the other end spindle nose of rotation axis (42) is connected by flange with rotating disc (44)；Support frame (43) installation
In the upper end of support plate (33)；The adjustable shelf (45) is mounted on support plate (33) by sliding matching mode, adjustable shelf
(45) T-shaped structure, and the upper end of adjustable shelf (45) offers U-shaped through-hole；Described drive rod (46) one end is mounted on rotation
On disk (44), and the other end of drive rod (46) is located in U-shaped through-hole.
4. a kind of powdered metal part surface processing device according to claim 1, it is characterised in that: the fixation
It is L-shaped through-hole that section is uniformly provided with inside the annular groove of pedestal (51) upper end, and oiliness film is provided on through-hole wall, is led to
The bottom end in hole is connected with the top of sponge block (53).
5. a kind of powdered metal part surface processing device according to claim 1, it is characterised in that: the sponge
The trapezoidal structure in block (53) section, sponge block (53) are internally provided with guide groove, and the V-shaped structure in the top of guide groove is located at sea
Continuous block (53) outer wall is evenly arranged with inclined pilot hole from top to bottom, and pilot hole is connected with guide groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910835234.0A CN110434342B (en) | 2019-09-05 | 2019-09-05 | Powder metallurgy metalwork surface treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910835234.0A CN110434342B (en) | 2019-09-05 | 2019-09-05 | Powder metallurgy metalwork surface treatment device |
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| CN110434342A true CN110434342A (en) | 2019-11-12 |
| CN110434342B CN110434342B (en) | 2021-06-08 |
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| CN201910835234.0A Active CN110434342B (en) | 2019-09-05 | 2019-09-05 | Powder metallurgy metalwork surface treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111482607A (en) * | 2020-04-02 | 2020-08-04 | 倪枫荷 | Powder metallurgy product aftertreatment system of processing |
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