CN106378632A - Precise forming mechanism of oil pump oil mouth plunger sleeve - Google Patents
Precise forming mechanism of oil pump oil mouth plunger sleeve Download PDFInfo
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- CN106378632A CN106378632A CN201610907859.XA CN201610907859A CN106378632A CN 106378632 A CN106378632 A CN 106378632A CN 201610907859 A CN201610907859 A CN 201610907859A CN 106378632 A CN106378632 A CN 106378632A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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Abstract
The invention discloses a precise forming mechanism of an oil pump oil mouth plunger sleeve. The precise forming mechanism of the oil pump oil mouth plunger sleeve comprises a clamping stick; a blank is clamped in the clamping stick; a shearing device is arranged at the lower end of the blank, shears the blank affected by external force and sends the shorn blanks to the lower ends of alloy dies through manipulators respectively, thus the processing efficiency of the blanks can be improved, the using requirements under different working conditions are met, and the blanks can be rapidly processed into finished products. By sending the blank into the alloy dies, the processing efficiency of the blanks can be optimized, qualified finished products can be rapidly processed, and the qualified rate of processing the finished products is increased. An ejection mechanism can timely eject the blanks out of the alloy dies respectively, thus the blanks are prevented from being locked in the corresponding alloy dies.
Description
Technical field
The present invention relates to a kind of shaping mechanism and its method are and in particular to a kind of oil pump nozzle plunger bushing precise forming machine
Structure.
Background technology
Station cold heading forming technology has obtained extensively should in standard component production industry, mechanical configurations simple part industry
With, be capable of saving material, production efficiency high, lead to low production cost, people's multimachineization operation, but producing oil pump
The industry of oil nozzle plunger bushing is by the typical labor-intensive enterprises of multiple working procedure, have that technical requirements are high, processing technology is complicated,
The features such as low production efficiency, production cost are high, plunger bushing precision pair is the vital part in oil pump nozzle part, domestic at present
Most manufacturers still take original processing technology, typically all adopt turning plunger bushing external form and drill bushing hole two main
Operation produces plunger, and wherein, turning plunger bushing external form is to carry out blanking sawing in the specification bar of a scale with sawing machine, with little
Type lathe carry out on same plunger sleeve blank segmentation cut different-diameter cylindrical to reach technological requirement, current technology leads to wave
Take substantial amounts of raw material, labour intensity is high, power consumption is high, production cost is high, product size control range width.
Content of the invention
It is an object of the invention to provide a kind of a kind of easy to operate, high oil pump nozzle plunger bushing precise forming of flow path efficiency
Mechanism.
The technical scheme is that：A kind of oil pump nozzle plunger bushing precise forming mechanism, a kind of oil pump nozzle plunger bushing
Precise forming mechanism, including folder rod, is clamped with blank in folder rod, is provided with clipping apparatus in blank lower end, clipping apparatus are subject to outer
Power is cut off blank and will be cut off blank and deliver to alloy mold lower end by manipulator, and blank is sent into alloy mold by described manipulator
Interior, it is provided with accommodating cavity in described ejecting mechanism, house blank in accommodating cavity, small end drift is connected with ejecting mechanism,
Described small end drift grafting enters in accommodating cavity, connects cylinder, is provided with big punch pin for end part in accommodating cavity bottom, press from both sides rod by manipulator
For U-clamp rod, press from both sides rod clamping blank, blank is worn and taken over U-clamp rod, small end drift and big punch pin for end part be symmetrically set and
Spaced between small end drift and big punch pin for end part, manipulator drives motion, interval setting between manipulator, machine by cylinder
Tool is provided with concavity bayonet socket on hand.
Including following production stage
Former bar is clamped by pressing from both sides rod, the former bar clamping is transported on clipping apparatus, outside clipping apparatus
Stress cuts off former bar, and the length that former bar intercepts is consistent, and former bar carried out the process of annealing process before cutting off, and former
Former bar is carried out phosphorus saponification process by bar after annealing；
The blank that clipping apparatus are cut off is conveyed into the first station die by manipulator, is provided with chamfering, institute in the first station die
State chamfering and be 0 ° -50 °, blank receives the extruding of the first station die after entering the first station die, through the first station mould
Form shape chamfering at 45 ° and the structure with deep hole shape on a blank after tool extruding；
Blank after being processed the first station die by manipulator is transported to the second station die, by the second station die by
45 ° of chamferings of stock of one station shaping deform further, are changed into 30 ° of cone shapes, the blank other end processes chamfering, outward simultaneously
Circle is thicker, and blank total length is elongated, and deep hole also accordingly deepens；
Through the blank of the second station die processing, 3rd station mould is transported to by manipulator, blank in 3rd station mould
Length, reducing rate is 40%-60%, and the depth of deep hole deepens, the wherein ratio between the deep hole on blank and blank diameter
For 2:Less than 5；
Enter into processing, blank in the 4th station die in the 4th station die through the finished blank of 3rd station mould
On second step reducing stretch processing, the transition position between two steps wherein on blank carries out 45 ° of chamfered, blank simultaneously
The positive 0-0.1mm of blank in external diameter upset ratio 3rd station mould, the positive 0- of blank in path upset ratio 3rd station mould
0.03mm, secondary reducing rate is 60-70%, and the depth of deep hole is constant；
Enter the 5th station die processing through the blank of the 4th station die processing, through the blank of the 5th station die processing
Upset the 4th station die that compares in big footpath processes positive 0-0.1mm, and upset the 4th station die that compares of path processes positive 0-0.1mm, length
Shorter than the finished blank of the 4th station die, the depth of deep hole is constant.
It is an advantage of the invention that：Reach quick no material loss from cutting off operation, reach material-saving, improve productivity ratio mesh
, former material per ton improves 58.8% for manufacturing the relatively old technique productions of product quantity, single product precision nearly moulding material profit only
Reach more than 98% with rate, class's production capacity significantly improves, using the inventive method manufacture, the morpheme size guarantee of product is conforming same
When also obtain preferable surface roughness, die life is greatly improved and is conveniently replaceable using the embedded extrusion die of alloy taper
Alloy core rod, reduces die cost, using digital control mechanical arm transposer it is ensured that the blank of 5 different profiles, precisely sends into phase
Corresponding station die, blank is directly transported by manipulator and is controlled, and the working (machining) efficiency of blank can be allowed to be lifted, and meets not
With the use requirement of operating mode, quickly blank can be processed into finished product, blank is sent in alloy mold, can allow blank
Working (machining) efficiency optimizes, and can go out qualified finished product with rapid processing, processed finished products qualification rate is lifted, and top mechanism can be timely by blank
Rush ejection in alloy mold, it is to avoid blank is entrapped in alloy mold.
Brief description
Fig. 1 is the structural representation of the present invention.
In figure：1 is folder rod, and 2 is blank, and 3 is clipping apparatus, and 4 is manipulator, and 5 is alloy mold, and 6 is ejecting mechanism, 7
For accommodating cavity, 8 is small end drift, and 9 is cylinder, and 10 is big punch pin for end part.
Specific embodiment
Embodiment 1
A kind of oil pump nozzle plunger bushing precise forming mechanism, including folder rod 1, is clamped with blank 2, it is under blank 2 in folder rod 1
End is provided with clipping apparatus 3, and clipping apparatus 3 are cut off blank 2 by external force and will be cut off blank 2 and deliver to alloy mold 5 by manipulator 4
Lower end, described manipulator 4 sends into blank in alloy mold 5, is provided with accommodating cavity 7, in accommodating cavity 7 in described ejecting mechanism 6
Accommodating blank, is connected with small end drift 8, the grafting of described small end drift 8 enters in accommodating cavity, manipulator 4 on ejecting mechanism 6
Other connection cylinder 9, is provided with big punch pin for end part 10 in accommodating cavity 7 bottom, and folder rod 1 is U-clamp rod, folder rod 1 clamping blank, and blank is worn
Take over U-clamp rod, small end drift 8 and big punch pin for end part 10 are symmetrically set and small end drift 8 and big punch pin for end part 10
Between spaced, manipulator 4 by cylinder drive motion, interval setting between manipulator 4, manipulator 4 is provided with concavity bayonet socket,
Folder rod is Openworks shape structure in the middle of U-shaped, and blank passes through in folder rod hollow component.
Including following production stage
Former bar is clamped by pressing from both sides rod, the former bar clamping is transported on clipping apparatus, outside clipping apparatus
Stress cuts off former bar, and the length that former bar intercepts is consistent, and former bar carried out the process of annealing process before cutting off, and former
Former bar is carried out phosphorus saponification process by bar after annealing；
Described phospholeum processing procedure is：Blank is carried out, carries out pickling after cleaning, then again blank is carried out clearly
Wash, the blank after cleaning is neutralized, the blank after neutralization is carried out, be then followed by phosphorating treatment, after phosphorating treatment
Carry out saponification process, finally blank is air-dried；
In wherein said pickling processes, add hydrochloric acid and clear water into descaling bath, ratio between the two is 1:50；
Then carry out phosphorating treatment, need to carry out the preparation of Phosphating Solution, according to part as metering every part according to 50g metering, list
Position wherein -5 parts of phosphatase 11, zinc oxide is 2-5 part, and catalyst is 1-5 part, and phosphoric acid and zinc oxide are carried out being mixed in reactive tank
Close reaction, the reaction time is 1-2 hour, in mixed solution, then add catalyst, in reaction 0.5-2 hour, be prepared into phosphorus
Change liquid and carry out phosphorating treatment and saponification process；
The preparation of preferred Phosphating Solution, according to part as every part of metering according to 50g metering, unit wherein phosphatase 11 part, zinc oxide is 2
Part, catalyst be 1 part, phosphoric acid and zinc oxide are carried out carrying out hybrid reaction in reactive tank, the reaction time be 1 hour, then to
Add catalyst in mixed solution, in reaction 0.5-2 hour, be prepared into Phosphating Solution and carry out phosphorating treatment and saponification process；
The blank that clipping apparatus are cut off is conveyed into the first station die by manipulator, is provided with chamfering, institute in the first station die
State chamfering and be 0 ° -50 °, blank receives the extruding of the first station die after entering the first station die, through the first station mould
Form shape chamfering at 45 ° and the structure with deep hole shape on a blank after tool extruding；
Blank after being processed the first station die by manipulator is transported to the second station die, by the second station die by
45 ° of chamferings of stock of one station shaping deform further, are changed into 30 ° of cone shapes, the blank other end processes chamfering, outward simultaneously
Circle is thicker, and blank total length is elongated, and deep hole also accordingly deepens；
Through the blank of the second station die processing, 3rd station mould is transported to by manipulator, blank in 3rd station mould
Length, reducing rate is 40%-60%, and the depth of deep hole deepens, the wherein ratio between the deep hole on blank and blank diameter
For 2:Less than 5；
Enter into processing, blank in the 4th station die in the 4th station die through the finished blank of 3rd station mould
On second step reducing stretch processing, the transition position between two steps wherein on blank carries out 45 ° of chamfered, blank simultaneously
The positive 0-0.1mm of blank in external diameter upset ratio 3rd station mould, the positive 0- of blank in path upset ratio 3rd station mould
0.03mm, secondary reducing rate is 60-70%, and the depth of deep hole is constant；
Enter the 5th station die processing through the blank of the 4th station die processing, through the blank of the 5th station die processing
Upset the 4th station die that compares in big footpath processes positive 0-0.1mm, and upset the 4th station die that compares of path processes positive 0-0.1mm, length
Shorter than the finished blank of the 4th station die, the depth of deep hole is constant.
Embodiment 2
A kind of oil pump nozzle plunger bushing precise forming mechanism, including folder rod 1, is clamped with blank 2, it is under blank 2 in folder rod 1
End is provided with clipping apparatus 3, and clipping apparatus 3 are cut off blank 2 by external force and will be cut off blank 2 and deliver to alloy mold 5 by manipulator 4
Lower end, described manipulator 4 sends into blank in alloy mold 5, is provided with accommodating cavity 7, in accommodating cavity 7 in described ejecting mechanism 6
Accommodating blank, is connected with small end drift 8, the grafting of described small end drift 8 enters in accommodating cavity, manipulator 4 on ejecting mechanism 6
Other connection cylinder 9, is provided with big punch pin for end part 10 in accommodating cavity 7 bottom, and folder rod 1 is U-clamp rod, folder rod 1 clamping blank, and blank is worn
Take over U-clamp rod, small end drift 8 and big punch pin for end part 10 are symmetrically set and small end drift 8 and big punch pin for end part 10
Between spaced, manipulator 4 by cylinder drive motion, interval setting between manipulator 4, manipulator 4 is provided with concavity bayonet socket,
Folder rod is Openworks shape structure in the middle of U-shaped, and blank passes through in folder rod hollow component.
Including following production stage
Former bar is clamped by pressing from both sides rod, the former bar clamping is transported on clipping apparatus, outside clipping apparatus
Stress cuts off former bar, and the length that former bar intercepts is consistent, and former bar carried out the process of annealing process before cutting off, and former
Former bar is carried out phosphorus saponification process by bar after annealing；
Described phospholeum processing procedure is：Blank is carried out, carries out pickling after cleaning, then again blank is carried out clearly
Wash, the blank after cleaning is neutralized, the blank after neutralization is carried out, be then followed by phosphorating treatment, after phosphorating treatment
Carry out saponification process, finally blank is air-dried；
In wherein said pickling processes, add hydrochloric acid and clear water into descaling bath, ratio between the two is 1:50；
Then carry out phosphorating treatment, need to carry out the preparation of Phosphating Solution, according to part as metering every part according to 50g metering, list
Position wherein -5 parts of phosphatase 11, zinc oxide is 2-5 part, and catalyst is 1-5 part, and phosphoric acid and zinc oxide are carried out being mixed in reactive tank
Close reaction, the reaction time is 1-2 hour, in mixed solution, then add catalyst, in reaction 0.5-2 hour, be prepared into phosphorus
Change liquid and carry out phosphorating treatment and saponification process；
The preparation of preferred Phosphating Solution, according to part as every part of metering according to 50g metering, unit wherein 2 parts of phosphoric acid, zinc oxide is 3
Part, catalyst be 2 parts, phosphoric acid and zinc oxide are carried out carrying out hybrid reaction in reactive tank, the reaction time be 1 hour, then to
Add catalyst in mixed solution, in reaction 1.5 hours, be prepared into Phosphating Solution and carry out phosphorating treatment and saponification process；
The blank that clipping apparatus are cut off is conveyed into the first station die by manipulator, is provided with chamfering, institute in the first station die
State chamfering and be 0 ° -50 °, blank receives the extruding of the first station die after entering the first station die, through the first station mould
Form shape chamfering at 45 ° and the structure with deep hole shape on a blank after tool extruding；
Blank after being processed the first station die by manipulator is transported to the second station die, by the second station die by
45 ° of chamferings of stock of one station shaping deform further, are changed into 30 ° of cone shapes, the blank other end processes chamfering, outward simultaneously
Circle is thicker, and blank total length is elongated, and deep hole also accordingly deepens；
Through the blank of the second station die processing, 3rd station mould is transported to by manipulator, blank in 3rd station mould
Length, reducing rate is 40%-60%, and the depth of deep hole deepens, the wherein ratio between the deep hole on blank and blank diameter
For 2:Less than 5；
Enter into processing, blank in the 4th station die in the 4th station die through the finished blank of 3rd station mould
On second step reducing stretch processing, the transition position between two steps wherein on blank carries out 45 ° of chamfered, blank simultaneously
The positive 0-0.1mm of blank in external diameter upset ratio 3rd station mould, the positive 0- of blank in path upset ratio 3rd station mould
0.03mm, secondary reducing rate is 60-70%, and the depth of deep hole is constant；
Enter the 5th station die processing through the blank of the 4th station die processing, through the blank of the 5th station die processing
Upset the 4th station die that compares in big footpath processes positive 0-0.1mm, and upset the 4th station die that compares of path processes positive 0-0.1mm, length
Shorter than the finished blank of the 4th station die, the depth of deep hole is constant.
Embodiment 3
A kind of oil pump nozzle plunger bushing precise forming mechanism, including folder rod 1, is clamped with blank 2, it is under blank 2 in folder rod 1
End is provided with clipping apparatus 3, and clipping apparatus 3 are cut off blank 2 by external force and will be cut off blank 2 and deliver to alloy mold 5 by manipulator 4
Lower end, described manipulator 4 sends into blank in alloy mold 5, is provided with accommodating cavity 7, in accommodating cavity 7 in described ejecting mechanism 6
Accommodating blank, is connected with small end drift 8, the grafting of described small end drift 8 enters in accommodating cavity, manipulator 4 on ejecting mechanism 6
Other connection cylinder 9, is provided with big punch pin for end part 10 in accommodating cavity 7 bottom, and folder rod 1 is U-clamp rod, folder rod 1 clamping blank, and blank is worn
Take over U-clamp rod, small end drift 8 and big punch pin for end part 10 are symmetrically set and small end drift 8 and big punch pin for end part 10
Between spaced, manipulator 4 by cylinder drive motion, interval setting between manipulator 4, manipulator 4 is provided with concavity bayonet socket,
Folder rod is Openworks shape structure in the middle of U-shaped, and blank passes through in folder rod hollow component.
Including following production stage
Described phospholeum processing procedure is：Blank is carried out, carries out pickling after cleaning, then again blank is carried out clearly
Wash, the blank after cleaning is neutralized, the blank after neutralization is carried out, be then followed by phosphorating treatment, after phosphorating treatment
Carry out saponification process, finally blank is air-dried；
In wherein said pickling processes, add hydrochloric acid and clear water into descaling bath, ratio between the two is 1:50；
Then carry out phosphorating treatment, need to carry out the preparation of Phosphating Solution, according to part as metering every part according to 50g metering, list
Position wherein -5 parts of phosphatase 11, zinc oxide is 2-5 part, and catalyst is 1-5 part, and phosphoric acid and zinc oxide are carried out being mixed in reactive tank
Close reaction, the reaction time is 1-2 hour, in mixed solution, then add catalyst, in reaction 0.5-2 hour, be prepared into phosphorus
Change liquid and carry out phosphorating treatment and saponification process；
The preparation of preferred Phosphating Solution, according to part as every part of metering according to 50g metering, unit wherein 2 parts of phosphoric acid, zinc oxide is 3
Part, catalyst be 2 parts, phosphoric acid and zinc oxide are carried out carrying out hybrid reaction in reactive tank, the reaction time be 1 hour, then to
Add catalyst in mixed solution, in reaction 2 hours, be prepared into Phosphating Solution and carry out phosphorating treatment and saponification process；
Former bar is clamped by pressing from both sides rod, the former bar clamping is transported on clipping apparatus, outside clipping apparatus
Stress cuts off former bar, and the length that former bar intercepts is consistent, and former bar carried out the process of annealing process before cutting off, and former
Former bar is carried out phosphorus saponification process by bar after annealing；
The blank that clipping apparatus are cut off is conveyed into the first station die by manipulator, is provided with chamfering, institute in the first station die
State chamfering and be 0 ° -50 °, blank receives the extruding of the first station die after entering the first station die, through the first station mould
Form shape chamfering at 45 ° and the structure with deep hole shape on a blank after tool extruding；
Blank after being processed the first station die by manipulator is transported to the second station die, by the second station die by
45 ° of chamferings of stock of one station shaping deform further, are changed into 30 ° of cone shapes, the blank other end processes chamfering, outward simultaneously
Circle is thicker, and blank total length is elongated, and deep hole also accordingly deepens；
Through the blank of the second station die processing, 3rd station mould is transported to by manipulator, blank in 3rd station mould
Length, reducing rate is 40%-60%, and the depth of deep hole deepens, the wherein ratio between the deep hole on blank and blank diameter
For 2:Less than 5；
Enter into processing, blank in the 4th station die in the 4th station die through the finished blank of 3rd station mould
On second step reducing stretch processing, the transition position between two steps wherein on blank carries out 45 ° of chamfered, blank simultaneously
The positive 0-0.1mm of blank in external diameter upset ratio 3rd station mould, the positive 0- of blank in path upset ratio 3rd station mould
0.03mm, secondary reducing rate is 60-70%, and the depth of deep hole is constant；
Enter the 5th station die processing through the blank of the 4th station die processing, through the blank of the 5th station die processing
Upset the 4th station die that compares in big footpath processes positive 0-0.1mm, and upset the 4th station die that compares of path processes positive 0-0.1mm, length
Shorter than the finished blank of the 4th station die, the depth of deep hole is constant.
Claims (2)
1. a kind of oil pump nozzle plunger bushing precise forming mechanism, a kind of oil pump nozzle plunger bushing precise forming mechanism, including folder rod,
Folder rod in be clamped with blank it is characterised in that：Be provided with clipping apparatus in blank lower end, clipping apparatus by external force cut off blank and
Blank will be cut off alloy mold lower end will be delivered to by manipulator, blank will be sent in alloy mold by described manipulator, on described top
Go out and in mechanism, be provided with accommodating cavity, in accommodating cavity, house blank, small end drift, described small end punching are connected with ejecting mechanism
Head grafting enters in accommodating cavity, connects cylinder, be provided with big punch pin for end part in accommodating cavity bottom by manipulator, and folder rod is U-clamp rod, folder
Rod clamps blank, and blank wears and take over U-clamp rod, small end drift and big punch pin for end part be symmetrically set and small end drift and
Spaced between big punch pin for end part, manipulator drives motion, interval setting between manipulator by cylinder, and manipulator is provided with recessed
Shape bayonet socket.
2. a kind of oil pump nozzle plunger bushing precise forming mechanism according to claim 1 it is characterised in that：Including following raw
Produce step
Former bar is clamped by pressing from both sides rod, the former bar clamping is transported on clipping apparatus, outside clipping apparatus
Stress cuts off former bar, and the length that former bar intercepts is consistent, and former bar carried out the process of annealing process before cutting off, and former
Former bar is carried out phosphorus saponification process by bar after annealing；
The blank that clipping apparatus are cut off is conveyed into the first station die by manipulator, is provided with chamfering, institute in the first station die
State chamfering and be 0 ° -50 °, blank receives the extruding of the first station die after entering the first station die, through the first station mould
Form shape chamfering at 45 ° and the structure with deep hole shape on a blank after tool extruding；
Blank after being processed the first station die by manipulator is transported to the second station die, by the second station die by
45 ° of chamferings of stock of one station shaping deform further, are changed into 30 ° of cone shapes, the blank other end processes chamfering, outward simultaneously
Circle is thicker, and blank total length is elongated, and deep hole also accordingly deepens；
Through the blank of the second station die processing, 3rd station mould is transported to by manipulator, blank in 3rd station mould
Length, reducing rate is 40%-60%, and the depth of deep hole deepens, the wherein ratio between the deep hole on blank and blank diameter
For 2:Less than 5；
Enter into processing, blank in the 4th station die in the 4th station die through the finished blank of 3rd station mould
On second step reducing stretch processing, the transition position between two steps wherein on blank carries out 45 ° of chamfered, blank simultaneously
The positive 0-0.1mm of blank in external diameter upset ratio 3rd station mould, the positive 0- of blank in path upset ratio 3rd station mould
0.03mm, secondary reducing rate is 60-70%, and the depth of deep hole is constant；
Enter the 5th station die processing through the blank of the 4th station die processing, through the blank of the 5th station die processing
Upset the 4th station die that compares in big footpath processes positive 0-0.1mm, and upset the 4th station die that compares of path processes positive 0-0.1mm, length
Shorter than the finished blank of the 4th station die, the depth of deep hole is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907859.XA CN106378632B (en) | 2016-10-19 | 2016-10-19 | A kind of oil pump nozzle plunger bushing precise forming mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907859.XA CN106378632B (en) | 2016-10-19 | 2016-10-19 | A kind of oil pump nozzle plunger bushing precise forming mechanism |
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| CN106378632A true CN106378632A (en) | 2017-02-08 |
| CN106378632B CN106378632B (en) | 2019-04-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787979A (en) * | 2018-08-24 | 2018-11-13 | 重庆标准件工业有限责任公司 | The big chamfering cold upsetting die of car of bolt and technique |
| CN110666075A (en) * | 2019-11-18 | 2020-01-10 | 黎东 | Screw cold heading forming device |
| CN112475811A (en) * | 2020-11-25 | 2021-03-12 | 嘉兴市飞立流体科技有限公司 | Machining process of oil pipe joint |
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| CN104148553A (en) * | 2014-06-17 | 2014-11-19 | 宁波安拓实业有限公司 | Manufacturing method of perforation head blank piece |
| CN104525809A (en) * | 2014-12-01 | 2015-04-22 | 宁波安拓实业有限公司 | Manufacturing method for coal cutting pick workblanks |
| CN105537304A (en) * | 2015-11-12 | 2016-05-04 | 陕西一品达石化有限公司 | Cold extruded plunger processing method |
| CN105964847A (en) * | 2016-06-30 | 2016-09-28 | 如皋市大生线路器材有限公司 | One-time precision forming technology of composite insulator lower-end fitting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108787979A (en) * | 2018-08-24 | 2018-11-13 | 重庆标准件工业有限责任公司 | The big chamfering cold upsetting die of car of bolt and technique |
| CN110666075A (en) * | 2019-11-18 | 2020-01-10 | 黎东 | Screw cold heading forming device |
| CN112475811A (en) * | 2020-11-25 | 2021-03-12 | 嘉兴市飞立流体科技有限公司 | Machining process of oil pipe joint |
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