CN109465460A - A kind of manufacturing method of bias ratchet - Google Patents
A kind of manufacturing method of bias ratchet Download PDFInfo
- Publication number
- CN109465460A CN109465460A CN201811635643.8A CN201811635643A CN109465460A CN 109465460 A CN109465460 A CN 109465460A CN 201811635643 A CN201811635643 A CN 201811635643A CN 109465460 A CN109465460 A CN 109465460A
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- Prior art keywords
- punching
- punch
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- manufacturing
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Classifications
-
- 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
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- 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
- B22F3/02—Compacting only
-
- 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
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
Abstract
A kind of manufacturing method of bias ratchet, the mold including manufacturing the bias ratchet, using metal powder as compression moulding in mold described in raw material, the pressure of the compacting is 6~7 tons, and demoulding protection pressure is 0.1~0.2MPa；Using the special UNIMAX mould steel with superhigh tenacity and high-intensitive characteristic, using the Fe metal powder of the special ABC100.30 with super suppression performance, using having the super SUP type lubricant that the frictional force in compacting between metal powder and metal powder, between metal powder and die surface is obviously reduced, at normal temperature can disposal pressed moulding high density bias ratchet and reach 7.35~7.45 grams of density it is per cubic centimeter.Composition of raw materials is by C:0.5~0.75%, Cu:0.5~1.2%, Ni:3.25~4.35%, Mo:0.35~0.65%, lubricant: 0.25~0.35%, surplus is Fe composition.
Description
Technical field
The present invention relates to a kind of eccentric ratchets, and in particular to a kind of manufacturing method of bias ratchet.
Background technique
Currently, the manufacturing method of the eccentric ratchet of traditional unidirectional clamping stagnation function is to make eccentric ratchet and finger respectively,
Finger is using stainless steel bars as raw material, by Vehicle Processing (one end face of turning)-Vehicle Processing (turning, outer circle)-Vehicle Processing (vehicle
Cut other end)-it is surface-treated the obtained machining finger of the multiple working procedures such as (deburring)-cylindrical grinding processing, then will be obtained
Machining finger be riveted on the eccentric ratchet without finger respectively piecemeal.
Using the eccentric ratchet of the unidirectional clamping stagnation function of this traditional approach manufacture, manufacturing procedure is more, the machining of finger
Stainless steel material utilization rate be 55%, cause a large amount of material resources to waste；Cause the process-cycle long, cause equipment, the energy,
The significant wastage of human resources；And processing quality is poor, qualification rate is low, and dimensional accuracy consistency is poor；Production efficiency is low, time-consuming
Take the fee of material cutter expense installation cost energy, high production cost.Especially machining finger needs being riveted to respectively piecemeal
Without on the ferrous based powder metallurgical bias ratchet of finger, production production efficiency is extremely low.So proposing a kind of system of eccentric ratchet
Make method.
Summary of the invention
One, the technical issues of solving
In view of the deficiencies of the prior art, the present invention proposes a kind of eccentric spine completely without processing work and high production efficiency
The manufacturing method of wheel, the one-pass molding of bias ratchet product, reduction machining and staking process, largely saving material, section obtained
About equipment, reduce manufacturing procedure, substantially reduce that manufacturing cost, dimensional accuracy height, high production efficiency, qualification rate be high, dimensional accuracy
Height, consistency is good, service performance is good, greatly enhances the eccentric ratchet competitiveness of product in market.
Two, specific technical solution
A kind of manufacturing method of bias ratchet, key are: the mold including manufacturing the bias ratchet, with metal powder
For compression moulding in mold described in raw material, the pressure of the compacting is 6~7 tons, and demoulding protection pressure is 0.1~0.2MPa；It is former
Expect by C:0.5~0.75%, Cu:0.5~1.2%, Ni:3.25~4.35%, Mo:0.35~0.65%, lubricant: 0.25~
0.35%, surplus is Fe composition.
Realization principle: manufacturing process flow of the invention are as follows: filling → compacting → demoulding.
As preferred: the mold used in the manufacturing method of the bias ratchet are as follows: be equipped with the yin of boss including lateral surface
Mould, upper punching, Xia Yichong, following two punch and plug offer the die hole through the former, the upper punching setting in the middle part of the former
The surface of the die hole is arranged in the output end rushed above the former and on this；Next punch through is located at the die hole
It is interior, and the upper surface of next punching is lower than the die hole upper surface；The following two punch is threaded through in next punching, and this lower two
The upper surface of punching is lower than the upper surface of next punching；The plug is threaded through in next punching, and the plug and it is described under
Two punchings are arranged in parallel, and the upper surface of the plug is flushed with the upper surface of the die hole；Corresponding offer is used in the upper punching
The through slot of the plug sliding；Tooth socket corresponding with eccentric ratchet ratchet part is offered on the inner wall of the die hole, passes through institute
The inner wall of die hole is stated, next outer surface for rushing the cylinder with the upper surface of following two punch and plug is constituted in the former to be used for
Manufacture the die cavity of eccentric ratchet；By prepared metal powder be filled by the surface of internal cavity of former, next punching upper end face,
In die cavity composed by the upper end face of following two punch, plug outer round surface, passes through compacting and be integrally formed.
As preferred: the mold further includes rush-up seat, next red seat, following two punch seat and mandrel holder, the upper punching and institute
Rush-up seat connection is stated, next punching, following two punch, plug are connect with next red seat, following two punch seat, mandrel holder respectively；Using upper
Structure is stated, more convenient can be connected with press convenient for the present apparatus.
As preferred: the top of the upper punching is connect by upper stamping cover with the rush-up seat, the bottom of next punching,
The bottom of following two punch, plug bottom respectively by next stamping cover, following two punch gland, plug gland and next red seat,
Following two punch seat, mandrel holder connection；Using the above structure, more convenient can be connected with press convenient for the present apparatus.
As preferred: the eccentric ratchet density of compacting: 7.35~7.45g/cm3；So that eccentric ratchet is more stable.
As preferred: next punching is slidably arranged in the die hole, and is connected with and is used on next red seat
It drives and described next is punched in the first motor slided up and down in the former；Next red seat is realized by first motor and is glided
Dynamic, next red seat drive is next to rush to lower slider, is conducive to processing and demoulding, the eccentric ratchet dimensional accuracy one after making processing
It causes, improves production efficiency.
As preferred: the following two punch is slidably arranged in next punching, and is connected with and is used in the following two punch seat
The second motor for driving the following two punch to slide up and down in next punching；Following two punch seat is realized up and down by the second motor
Sliding, following two punch seat drive following two punch to slide up and down, and are conducive to processing and demoulding, the eccentric ratchet dimensional accuracy one after making processing
It causes, improves production efficiency.
As preferred: the plug is slidably arranged in next punching, and is connected in the mandrel holder one for band
Move the third motor that the plug slides up and down in next punching；Mandrel holder one is realized by third motor and is glided
Dynamic, mandrel holder one drives plug to slide up and down, and the formation and demoulding of spindle hole on eccentric ratchet is beneficial to, after making processing
Eccentric ratchet dimensional accuracy it is consistent, improve production efficiency.
The invention has the benefit that can be realized and disposably press the eccentric ratchet with finger using structure of the invention
Molding performance is made, the lateral pressure as caused by compacting high density bias ratchet is very big, and the inner surface of next punching is needed to need
It bears disposably to suppress and reaches 7.35~7.45 grams of highdensity very big lateral pressures per cubic centimeter, using UNIMAX mold
Steel has superhigh tenacity and high-intensitive characteristic, makes it at the finger part of compression moulding bias ratchet, is able to bear non-
Normal big lateral pressure and be not to rupture, due to metal powder be compressed molding pressure can generate larger frictional resistance and
Metal powder natural resiliency power makes it when forming compacting using the Fe metal powder of ABC100.30, at normal temperature can be primary
Property compression moulding high density bias ratchet and reach 7.35~7.45 grams of density it is per cubic centimeter, the lubricant using SUP type subtracts
The small frictional force in compacting between metal powder and metal powder, between metal powder and die surface, in same pressure
In the case where, keep the density of compression moulding higher, substantially increase the consistency of eccentric ratchet, and makes the bias of compression moulding
It is smaller with the frictional force of mold in ratchet knockout course, show splendid one-pass molding performance at normal temperature.
Detailed description of the invention
Fig. 1 is mold structure diagram of the invention；
Fig. 2 is that mold of the invention fills status architecture schematic diagram before powder；
Fig. 3 by the present invention the molding eccentric ratchet with finger of processing structural schematic diagram；
Fig. 4 is the side view of Fig. 3.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figures 1 to 4: a kind of manufacturing method of bias ratchet, the mold by manufacturing the bias ratchet forms, with metal
Powder is compression moulding in mold described in raw material, and the pressure of the compacting is 6~7 tons, demoulding protection pressure is 0.1~
0.2MPa；Raw material is by C:0.5~0.75%, Cu:0.5~1.2%, Ni:3.25~4.35%, Mo:0.35~0.65%, lubrication
Agent: 0.25~0.35%, surplus is Fe composition, the mold used in the manufacturing method of the bias ratchet are as follows: including lateral surface
Former 1, upper punching 2, next punching 3, following two punch 4 and plug 5, the middle part of the former 1 equipped with boss are offered through the former 1
Die hole 6,1 top of the former is arranged in for the upper punching 2 and the surface of the die hole 6 is arranged in output end of punching 2 on this；
Next punching 3 is threaded through in the die hole 6, and the upper surface of next punching 3 is lower than 6 upper surface of die hole；Described lower two
Punching 4 is threaded through in next punching 3, and the upper surface of the following two punch 4 is lower than the upper surface of next punching 3；The plug 5 is worn
It is located in next punching 3, and the plug 5 is arranged in parallel with the following two punch 4, the upper surface of the plug 5 and the die hole 6
Upper surface flush；The corresponding through slot 7 offered for the plug 5 sliding in the upper punching 2；On the inner wall of the die hole 6
Offer tooth socket corresponding with eccentric ratchet ratchet part, by the inner wall of the die hole 6, the upper end of next punching 3 and following two punch 4
The outer surface of the cylinder of face and plug 5 constitutes the die cavity 19 for manufacturing eccentric ratchet in the former 1, and the mold is also
Including rush-up seat 8, next red seat 10, following two punch seat 11 and mandrel holder 12, the upper punching 2 is connect with the rush-up seat 8, under described
One punching 3, following two punch 4, plug 5 are connect with next red seat 10, following two punch seat 11, mandrel holder 12 respectively, and the top of the upper punching 2 is logical
It crosses stamping cover 14 to connect with the rush-up seat 8, bottom, the bottom of following two punch 4, the bottom of plug 5 of next punching 3 are distinguished
Pass through next stamping cover 16, following two punch gland 17, plug gland 18 and next red seat 10, following two punch seat 11, mandrel holder 12
Connection, the eccentric ratchet density of compacting: the material of 7.35~7.45g/cm3, next punching 3 use UNIMAX mould steel, institute
Fe powder is stated using ABC100.30, the lubricant uses SUP；Next punching 3 is slidably arranged in the die hole 6, and
The first cylinder for driving next punching 3 to slide up and down in the former 1 is connected on next red seat 10；It is described
Following two punch 4 is slidably arranged in next punching 3, and is connected in the following two punch seat 11 for driving the following two punch 4 to exist
The second cylinder slided up and down in next punching 3；The plug 5 is slidably arranged in next punching 3, and in the plug
Seat 1 is connected with the third cylinder for driving the plug 5 to slide up and down in next punching 3.
Working principle: manufacturing process flow of the invention are as follows: configured metal powder is filled out in filling → compacting → demoulding
Be charged to by former 1 surface of internal cavity, it is next punching 3 upper end face and tooth socket, the upper end face of following two punch 4, plug 5 outer circle table
After in die cavity composed by face, start to suppress, upper punching 2 is run down, while being pressed into former 1, former 1 and next punching 3 also with
It floats downwards, when former 1 and next punching 3 are blocked by block, and upper punching 2 is pressed into lower dead center downwards, is filled into die cavity
Metal powder in 19 is pressed into the chamfered shape of eccentric ratchet, and at normal temperature, the disposable density for suppressing eccentric ratchet reaches
7.35~7.45 grams per cubic centimeter, completes pressing process, and when demoulding, upper punching 2 is run up, and former 1 is run down, in Shang Chong
2 run up while run down with former 1, during the eccentric ratchet of compression moulding deviates from cavity space, give
Upper punching 2 applies the pressure maintaining pressure that pressure is 0.1~0.2MPa, friction when guaranteeing that the eccentric ratchet of compression moulding is not demolded
Power pulls out crackle, and after the ratchet part abjection former of the eccentric ratchet of compression moulding, next punching 3 is run down, and makes to have pressed
The next punching 3 of finger part abjection of molding eccentric ratchet is made, upper punching 2 is further continued for running up, and completes knockout course；Wherein,
3 realizations of next punching are slided up and down by the first cylinder, next punching 3 drives next punching 3 to slide up and down, be conducive to processing with
Demoulding, the eccentric ratchet dimensional accuracy after making processing is consistent, improves production efficiency；Under following two punch 4 are connected with for driving
The second cylinder that two punchings 4 slide up and down in next punching 3；4 realizations of following two punch are slided up and down by the second cylinder, following two punch
4 drive following two punches 4 slide up and down, and are conducive to processing and demoulding, and the eccentric ratchet dimensional accuracy after making processing is consistent, improve
Production efficiency；Plug 5 one are connected with the third cylinder for driving plug 5 to slide up and down in next punching 3；Pass through third gas
Cylinder slides up and down 5 one realizations of plug, and 5 one drive plugs 5 of plug slide up and down, and is beneficial on eccentric ratchet main
The formation and demoulding of axis hole, the eccentric ratchet dimensional accuracy after making processing is consistent, improves production efficiency, due to suppressing high density
Lateral pressure caused by eccentric ratchet is very big, need the inner surface of next punching need to bear disposable compacting reach 7.35~
7.45 grams of highdensity very big lateral pressures per cubic centimeter have superhigh tenacity and high-intensitive spy using UNIMAX mould steel
Property, make it at the finger part of compression moulding bias ratchet, is able to bear very big lateral pressure and is not to rupture, by
Larger frictional resistance and metal powder natural resiliency power can be generated being compressed molding pressure in metal powder, used
The Fe metal powder of ABC100.30 makes it when forming compacting, at normal temperature being capable of disposal pressed moulding high density bias spine
Take turns and reach 7.35~7.45 grams of density it is per cubic centimeter, using the lubricant of SUP type reduce compacting when metal powder with
Frictional force between metal powder, between metal powder and die surface makes the close of compression moulding in the case where same pressure
Du Genggao, substantially increases the consistency of eccentric ratchet, and make in the eccentric ratchet knockout course of compression moulding with mold
Frictional force is smaller, shows splendid one-pass molding performance at normal temperature.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, subject to the scope of the present invention is defined by the following claims.
Claims (8)
1. a kind of manufacturing method of bias ratchet, it is characterised in that: the mold including manufacturing the bias ratchet is with metal powder
Compression moulding in mold described in raw material, the pressure of the compacting are 6~7 tons, and demoulding protection pressure is 0.1~0.2MPa；Raw material
By C:0.5~0.75%, Cu:0.5~1.2%, Ni:3.25~4.35%, Mo:0.35~0.65%, lubricant: 0.25~
0.35%, surplus is Fe composition.
2. a kind of manufacturing method of eccentric ratchet according to claim 1, it is characterised in that: the mold includes that lateral surface is set
There are former (1), upper punching (2), next punching (3), following two punch (4) and the plug (5) of boss, is offered in the middle part of the former (1)
Through the die hole (6) of the former (1), (2) are rushed in upper punching (2) setting output end above the former (1) and on this is set
Set the surface in the die hole (6)；Next punching (3) is threaded through in the die hole (6), and the upper end of next punching (3)
Face is lower than the die hole (6) upper surface；The following two punch (4) is threaded through in next punching (3), and the following two punch (4) is upper
Upper surface of the end face lower than next punching (3)；The plug (5) is threaded through in next punching (3), and the plug (5) with
The following two punch (4) is arranged in parallel, and the upper surface of the plug (5) is flushed with the upper surface of the die hole (6)；The upper punching
(2) the corresponding through slot (7) offered for the plug (5) sliding in；It is offered on the inner wall of the die hole (6) and eccentric spine
The corresponding tooth socket in ratchet part is taken turns, by the inner wall of the die hole (6), upper surface and the core of next punching (3) and following two punch (4)
The outer surface of the cylinder of stick (5) constitutes the die cavity (19) for manufacturing eccentric ratchet in the former (1).
3. a kind of manufacturing method of eccentric ratchet according to claim 2, it is characterised in that: the mold further includes rush-up seat
(8), next red seat (10), following two punch seat (11) and mandrel holder (12), the upper punching (2) connect with the rush-up seat (8), described
Next punching (3), following two punch (4), plug (5) are connect with next red seat (10), following two punch seat (11), mandrel holder (12) respectively.
4. a kind of manufacturing method of eccentric ratchet according to claim 3, it is characterised in that: the top of the upper punching (2) is logical
It crosses stamping cover (14) to connect with the rush-up seat (8), next punching bottom of (3), the bottom of following two punch (4), plug (5)
Bottom respectively by next stamping cover (16), following two punch gland (17), plug gland (18) and next red seat (10), under
Two red seats (11), mandrel holder (12) connection.
5. a kind of manufacturing method of eccentric ratchet according to claim 4, it is characterised in that: next punching (3) sliding is set
It sets in the die hole (6), and is connected on next red seat (10) for driving next punching (3) in the former
(1) the first cylinder slided up and down in.
6. a kind of manufacturing method of eccentric ratchet according to claim 5, it is characterised in that: following two punch (4) sliding is set
It sets in next punching (3), and is connected in the following two punch seat (11) for driving the following two punch (4) described next
The second cylinder slided up and down in punching (3).
7. a kind of manufacturing method of eccentric ratchet according to claim 6, it is characterised in that: plug (5) the sliding setting
In next punching (3), and it is connected in the mandrel holder one (12) for driving the plug (5) in next punching
(3) the third cylinder slided up and down in.
8. a kind of manufacturing method of eccentric ratchet according to claim 1, it is characterised in that: the eccentric ratchet density of compacting:
7.35~7.45g/cm3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635643.8A CN109465460A (en) | 2018-12-29 | 2018-12-29 | A kind of manufacturing method of bias ratchet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635643.8A CN109465460A (en) | 2018-12-29 | 2018-12-29 | A kind of manufacturing method of bias ratchet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109465460A true CN109465460A (en) | 2019-03-15 |
Family
ID=65676984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811635643.8A Pending CN109465460A (en) | 2018-12-29 | 2018-12-29 | A kind of manufacturing method of bias ratchet |
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| CN (1) | CN109465460A (en) |
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| SU1771879A1 (en) * | 1990-10-08 | 1992-10-30 | Proizv Ob Temp N | Method for production of toothed articles from powders |
| CN1907603A (en) * | 2006-08-08 | 2007-02-07 | 海门市常乐粉末冶金厂 | Manufacture method and die for powder metallurgy inside spin ratchet wheel |
| CN202461521U (en) * | 2012-02-09 | 2012-10-03 | 重庆聚能粉末冶金有限公司 | Mould for manufacturing ratchet wheel of motorcycle |
| CN103056373A (en) * | 2013-01-24 | 2013-04-24 | 重庆聚能粉末冶金有限公司 | Method for manufacturing starting ratchet wheel of motorcycle |
| CN202910236U (en) * | 2012-12-03 | 2013-05-01 | 重庆聚能粉末冶金有限公司 | Die for manufacturing gear of motorcycle oil pump |
| CN202963450U (en) * | 2012-11-23 | 2013-06-05 | 庆腾精密科技股份有限公司 | Structure of eccentric bevel gear molding die for use in powder metallurgy |
| CN103372649A (en) * | 2012-04-17 | 2013-10-30 | 重庆聚能粉末冶金有限公司 | Method for manufacturing shifting fork of motorcycle |
| CN103846444A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method of motorcycle engine oil pump gear |
| CN204276910U (en) * | 2014-11-25 | 2015-04-22 | 重庆聚能粉末冶金有限公司 | duplicate gear mould |
| CN105618747A (en) * | 2016-01-19 | 2016-06-01 | 江西稀有稀土金属钨业集团有限公司 | Mold capable of molding multiple hole-carried products through once punching |
| CN205702436U (en) * | 2016-05-04 | 2016-11-23 | 浙江衢州永丰金属制品有限公司 | A kind of powder metallurgy forming finishing mold of bronze structures part |
| CN106180702A (en) * | 2016-08-12 | 2016-12-07 | 重庆聚能粉末冶金股份有限公司 | Powder metallurgy process for ratchet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1771879A1 (en) * | 1990-10-08 | 1992-10-30 | Proizv Ob Temp N | Method for production of toothed articles from powders |
| CN1907603A (en) * | 2006-08-08 | 2007-02-07 | 海门市常乐粉末冶金厂 | Manufacture method and die for powder metallurgy inside spin ratchet wheel |
| CN202461521U (en) * | 2012-02-09 | 2012-10-03 | 重庆聚能粉末冶金有限公司 | Mould for manufacturing ratchet wheel of motorcycle |
| CN103372649A (en) * | 2012-04-17 | 2013-10-30 | 重庆聚能粉末冶金有限公司 | Method for manufacturing shifting fork of motorcycle |
| CN202963450U (en) * | 2012-11-23 | 2013-06-05 | 庆腾精密科技股份有限公司 | Structure of eccentric bevel gear molding die for use in powder metallurgy |
| CN202910236U (en) * | 2012-12-03 | 2013-05-01 | 重庆聚能粉末冶金有限公司 | Die for manufacturing gear of motorcycle oil pump |
| CN103846444A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method of motorcycle engine oil pump gear |
| CN103056373A (en) * | 2013-01-24 | 2013-04-24 | 重庆聚能粉末冶金有限公司 | Method for manufacturing starting ratchet wheel of motorcycle |
| CN204276910U (en) * | 2014-11-25 | 2015-04-22 | 重庆聚能粉末冶金有限公司 | duplicate gear mould |
| CN105618747A (en) * | 2016-01-19 | 2016-06-01 | 江西稀有稀土金属钨业集团有限公司 | Mold capable of molding multiple hole-carried products through once punching |
| CN205702436U (en) * | 2016-05-04 | 2016-11-23 | 浙江衢州永丰金属制品有限公司 | A kind of powder metallurgy forming finishing mold of bronze structures part |
| CN106180702A (en) * | 2016-08-12 | 2016-12-07 | 重庆聚能粉末冶金股份有限公司 | Powder metallurgy process for ratchet |
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