CN104043835A - Processing method for presser foot control cam for computerized flat knitting machines - Google Patents
Processing method for presser foot control cam for computerized flat knitting machines Download PDFInfo
- Publication number
- CN104043835A CN104043835A CN201410238122.4A CN201410238122A CN104043835A CN 104043835 A CN104043835 A CN 104043835A CN 201410238122 A CN201410238122 A CN 201410238122A CN 104043835 A CN104043835 A CN 104043835A
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- Prior art keywords
- cam
- controlled
- presser feet
- processing method
- control
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- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 238000009940 knitting Methods 0.000 title abstract description 5
- 238000005245 sintering Methods 0.000 claims abstract description 23
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 238000001746 injection moulding Methods 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 238000005238 degreasing Methods 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 230000000399 orthopedic effect Effects 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 6
- 238000003801 milling Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
A processing method for a presser foot control cam for computerized flat knitting machines belongs to the technical field of processing parts for knitting machinery. The processing method includes the following steps: 85 to 94 percent by weight of metal powder and 6 to 15 percent by weight of organic binder are poured into a mixer and uniformly mixed, so that feedstock is obtained; the feedstock is brought into an injection moulding machine with a presser foot control cam mould and moulded by injection, injection moulding temperature is controlled, and thereby a presser foot control cam blank is obtained; the presser foot control cam blank is transferred into a debinding furnace and debound, debinding temperature and time are controlled, and after being taken out of the debinding furnace, a presintered blank from which the organic binder is removed is obtained; the presintered blank is transferred into a sintering furnace and sintered, sintering temperature and time are controlled, and thereby a green presser foot control cam is obtained; the green presser foot control cam is finished, so that a presser foot control cam for computerized flat knitting machines is obtained. Processing difficulty is decreased; the rate of finished products is high, and no material is wasted; equipment investment is reduced, the intensity of operation is decreased, and the requirement of industrialized mass production is met.
Description
Technical field
The invention belongs to pin textile machinery component processing technique field, be specifically related to the processing method that presser feet that a kind of computer plain flat knitter uses is controlled cam.
Background technology
Aforesaid presser feet is controlled cam custom referred to as " control cam ", and can in disclosed Chinese patent literature, be seen in, as Granted publication CN203463587U recommends to have " a kind of transmission mechanism of presser feet cam ", and for example CN201981375U provides " high-speed computerized embroidery machine presser foot cam pack ", etc.From these two patent schemes that are not limited to exemplify: it is the indispensable critical component on computer plain flat knitter (comprising computerized emboridering machine) that presser feet is controlled cam.
The process that the presser feet that prior art processing computing controlled flat knitting machine is used is controlled cam is as follows: first to round steel blanking (industry claims blanking), through lathe Vehicle Processing, go out profile (blank) again, then hole and fraising, be finally put to numerical control machining center and carry out finish-milling processing.There is following shortcoming in this processing method: one, the hole (axial hole) of camshaft of controlling cam due to presser feet is longer, thereby the axis in hole is that perpendicularity between center line and cam surface is had relatively high expectations, in boring procedure, be difficult to ensure the axis in hole and the perpendicularity between cam surface, can only be in follow-up check the large presser feet of the error of perpendicularity between the axis in hole and cam surface be controlled to cam and reject, thereby cause the low and wasting of resources of yield rate; Its two, the difficulty of processing to the cam wheel face of presser feet effect of controlling on cam for presser feet is large, thereby not only time-consuming, and workman's metalworking manipulation strength is large; Its three, because material deterioration inside in blanking, boring, fraising and finish-milling process is large, thereby be unfavorable for economizing on resources; Its four, because working (machining) efficiency is low, thereby be difficult to meet industrial amplification production requirement.
For above-mentioned technical problem, the applicant has done positive and useful exploration, has formed technical scheme described below, and is taking secrecy provision Xia the applicant plant area to carry out simulated test, and it is practicable that result proves.
Summary of the invention
Task of the present invention is to provide a kind of and uses remarkable reduction difficulty of processing without relying on the processing step of traditional blanking, turning profile, boring, fraising and finish-milling and so on, improve yield rate, avoid causing in process waste of material and not only can reduce equipment investment, alleviate workman's manipulation strength, and can meet the processing method that presser feet that computer plain flat knitter that industrial amplification production requires uses is controlled cam.
Task of the present invention completes like this, and the presser feet that a kind of computer plain flat knitter is used is controlled the processing method of cam, comprises the following steps:
A) prepare feeding, the organic binder bond that the metal dust that is 85-94% by quality % number and quality % number are 6-15% drops in mixing device and mixes, and obtains feeding;
B) injection moulding, by by steps A) feeding that obtains is introduced is furnished with the injection (mo(u)lding) machine injection moulding that presser feet is controlled cam mould, and control injecting forming temperature, obtain presser feet and control cam blank;
C) presintering, by by step B) presser feet that obtains controls cam blank and proceeds to degreasing in debinding furnace, and control skimming temp and time, and go out debinding furnace, obtain removing the presintering blank of organic binder bond;
D) sintering, by by step step C) the presintering blank that obtains proceeds to sintering in sintering furnace, and control sintering temperature and time, obtain presser feet and control just base of cam;
E) finishing, to by step D) presser feet that obtains control cam just base carry out finishing, obtain the presser feet that computer plain flat knitter uses and control cam.
In a specific embodiment of the present invention, steps A) metal dust described in is Fe-Ni Alloy Powder or iron-nickel alloy.
In another specific embodiment of the present invention, described Fe-Ni Alloy Powder is the mixture of the quality % number iron powder that is 2% and the quality % number nickel powder that is 98%; Described iron-nickel alloy is Fe8Ni.
In another specific embodiment of the present invention, steps A) organic binder bond described in consists of following raw material by weight: paraffin 58-60 part, polyethylene 30-37 part and stearic acid 5-10 part.
In another specific embodiment of the present invention, step B) the control injecting forming temperature described in is that injecting forming temperature is controlled as 145-150 ℃.
Of the present invention, also have in a specific embodiment step C) described in control skimming temp and time be that skimming temp is controlled as 350-550 ℃, degreasing time is controlled as 200-400min.
More of the present invention and in a specific embodiment, step D) control sintering temperature and time described in are that sintering temperature is controlled as 1200-1250 ℃, and sintering time is controlled as 60-90min.
In of the present invention and then a specific embodiment, step e) finishing described in refer to by presser feet control cam just base put into finishing mold, at the upper and lower mould of finishing mold, on press, carry out under the state of matched moulds each other orthopedic.
Of the present invention again more and in a specific embodiment, described press is hydraulic press.
In again of the present invention and then a specific embodiment, described orthopedic be presser feet to be controlled to cam just axis and the perpendicularity between cam surface of the camshaft of base are rectified whole.
One of technique effect provided by the invention, owing to having used injection moulding, thereby the loaded down with trivial details step of blanking, turning profile, boring, fraising and finish-milling that can abandoning tradition, contribute to significantly to reduce difficulty of processing; Two, owing to having used injection moulding, thereby not only yield rate is high, and without waste of material; Three, owing to having used injection moulding, thereby both can reduce equipment investment, can alleviate again workman's manipulation strength and can also meet industrial amplification production requirement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that presser feet that computer plain flat knitter that the inventive method obtains is used is controlled cam.
Refer to Fig. 1, figure 1 illustrates presser feet and control cam body 1, at this presser feet, controlling a side of cam body 1 and be positioned at middle position formation has one to control with presser feet the camshaft 2 that cam body 1 is vertical, and the cam surface 11 that the longitudinal center line of the axis hole 21 of this camshaft 2 and presser feet are controlled cam 1 forms vertical relations.
Embodiment 1:
The presser feet that processing computer plain flat knitter is as shown in Figure 1 used is controlled cam and is comprised the following steps:
A) prepare feeding, the organic binder bond that the Fe-Ni Alloy Powder that is 90% by quality % number and quality % number are 10% drops in batch mixer and fully mixes, obtain feeding, in this step, the mixture that the iron powder that described Fe-Ni Alloy Powder is is 2% by quality % number and the nickel powder that quality % number is 98% mix mutually, described organic binder bond consists of the following raw material of proportioning by weight: 5 parts of 58 parts, paraffin, 37 parts of polyethylene and stearic acid;
B) injection moulding, by by steps A) feeding that obtains is introduced is furnished with presser feet to control cam mould (be that presser feet is controlled cam die for injection molding, as follows) injection (mo(u)lding) machine injection moulding, that is to say that feeding is injected to presser feet by injection (mo(u)lding) machine to be controlled in cam mould, injection molding temperature is 145 ℃, obtains presser feet and controls cam blank;
C) presintering, by by step B) presser feet that obtains controls cam blank and is transferred in debinding furnace degreasing 400min at 350 ℃, obtained removing the presintering blank of organic binder bond;
D) sintering, by by step C) the presintering blank that obtains is transferred in sintering furnace sintering 90min at 1200 ℃, and obtain presser feet and control just base of cam;
E) finishing, by by step D) presser feet that obtains control cam just base to be transferred to finishing mold (be that presser feet is controlled cam shaping mould, as follows) in, under state at finishing mold in matched moulds, on 10 t hydraulic press, carry out orthopedic, make the longitudinal center line of axis hole 21 of camshaft 2 and the perpendicularity between the cam surface 11 of presser feet control cam 1 meet designing requirement, obtain the presser feet control cam that computer plain flat knitter is as shown in Figure 1 used.
Embodiment 2:
Only by steps A) in the quality % number of Fe-Ni Alloy Powder change 85% into, change the quality % number of organic binder bond into 15%, wherein, Fe-Ni Alloy Powder is Fe8Ni, raw material and the parts by weight thereof of organic binder bond change into; 10 parts of 60 parts, paraffin, 30 parts of polyethylene and stearic acid; By step B) in injecting forming temperature change 150 ℃ into; By step C) skimming temp and time change respectively 450 ℃ and 300min into; By step D) sintering temperature and sintering time change respectively 1250 ℃ and 60min into, all the other are all with the description to embodiment 1.
Embodiment 3:
Only by steps A) in the quality % number of Fe-Ni Alloy Powder change 94% into, change the quality % number of organic binder bond into 6%, the raw material of organic binder bond and parts by weight thereof are changed into; 8 parts of 59 parts, paraffin, 33 parts of polyethylene and stearic acid; By step C) skimming temp and degreasing time change respectively 550 ℃ and 200min into; By step D) sintering temperature and sintering time change respectively 1225 ℃ and 75min into, all the other are all with the description to embodiment 1.
Claims (10)
1. the presser feet that computer plain flat knitter is used is controlled a processing method for cam, it is characterized in that comprising the following steps:
A) prepare feeding, the organic binder bond that the metal dust that is 85-94% by quality % number and quality % number are 6-15% drops in mixing device and mixes, and obtains feeding;
B) injection moulding, by by steps A) feeding that obtains is introduced is furnished with the injection (mo(u)lding) machine injection moulding that presser feet is controlled cam mould, and control injecting forming temperature, obtain presser feet and control cam blank;
C) presintering, by by step B) presser feet that obtains controls cam blank and proceeds to degreasing in debinding furnace, and control skimming temp and time, and go out debinding furnace, obtain removing the presintering blank of organic binder bond;
D) sintering, by by step step C) the presintering blank that obtains proceeds to sintering in sintering furnace, and control sintering temperature and time, obtain presser feet and control just base of cam;
E) finishing, to by step D) presser feet that obtains control cam just base carry out finishing, obtain the presser feet that computer plain flat knitter uses and control cam.
2. computer plain flat knitter according to claim 1 is used presser feet is controlled the processing method of cam, it is characterized in that steps A) described in metal dust be Fe-Ni Alloy Powder or iron-nickel alloy.
3. computer plain flat knitter according to claim 2 is used presser feet is controlled the processing method of cam, it is characterized in that described Fe-Ni Alloy Powder is the mixture of the quality % number iron powder that is 2% and the quality % number nickel powder that is 98%; Described iron-nickel alloy is Fe8Ni.
4. computer plain flat knitter according to claim 1 is used presser feet is controlled the processing method of cam, it is characterized in that steps A) described in organic binder bond by following raw material by weight, formed: paraffin 58-60 part, polyethylene 30-37 part and stearic acid 5-10 part.
5. computer plain flat knitter according to claim 1 is used presser feet is controlled the processing method of cam, it is characterized in that step B) described in control injecting forming temperature be that injecting forming temperature is controlled as 145-150 ℃.
6. the presser feet that computer plain flat knitter according to claim 1 is used is controlled the processing method of cam, it is characterized in that step C) described in control skimming temp and time be that skimming temp is controlled as 350-550 ℃, degreasing time is controlled as 200-400min.
7. the presser feet that computer plain flat knitter according to claim 1 is used is controlled the processing method of cam, it is characterized in that step D) described in control sintering temperature and time be that sintering temperature is controlled as 1200-1250 ℃, sintering time is controlled as 60-90min.
8. the presser feet that computer plain flat knitter according to claim 1 is used is controlled the processing method of cam, it is characterized in that step e) described in finishing refer to by presser feet control cam just base put into finishing mold, at the upper and lower mould of finishing mold, on press, carry out under the state of matched moulds each other orthopedic.
9. the presser feet that computer plain flat knitter according to claim 8 is used is controlled the processing method of cam, it is characterized in that described press is hydraulic press.
10. computer plain flat knitter according to claim 8 is used presser feet is controlled the processing method of cam, it is characterized in that described orthopedic be presser feet to be controlled to cam just axis and the perpendicularity between cam surface of the camshaft of base are rectified whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410238122.4A CN104043835A (en) | 2014-06-03 | 2014-06-03 | Processing method for presser foot control cam for computerized flat knitting machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410238122.4A CN104043835A (en) | 2014-06-03 | 2014-06-03 | Processing method for presser foot control cam for computerized flat knitting machines |
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| Publication Number | Publication Date |
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| CN104043835A true CN104043835A (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410238122.4A Pending CN104043835A (en) | 2014-06-03 | 2014-06-03 | Processing method for presser foot control cam for computerized flat knitting machines |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785785A (en) * | 2015-04-01 | 2015-07-22 | 宝得粉末注射成形（常熟）有限公司 | Machining method for swing cam for car steering control system |
| CN112296341A (en) * | 2020-09-15 | 2021-02-02 | 广州市鑫富塑胶有限公司 | Drop gun needle and preparation method thereof |
| WO2022099686A1 (en) * | 2020-11-12 | 2022-05-19 | 三阳纺织有限公司 | Cam component manufacturing method and use in textile machines |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0523651A2 (en) * | 1991-07-15 | 1993-01-20 | Mitsubishi Materials Corporation | Method for making high strength injection molded ferrous material |
| CN1133764A (en) * | 1996-01-19 | 1996-10-23 | 冶金工业部钢铁研究总院 | Method for producing high-gravity alloy manufactured product |
| CN102000824A (en) * | 2009-09-02 | 2011-04-06 | 东睦新材料集团股份有限公司 | Manufacturing method of cam of engine camshaft |
| CN102554234A (en) * | 2012-02-28 | 2012-07-11 | 惠州Tcl移动通信有限公司 | Processing method and supporting jig for metal injection molding structural parts |
| CN102847944A (en) * | 2012-04-27 | 2013-01-02 | 宝得粉末注射成形（常熟）有限公司 | Method for processing yarn guide nozzle for computer flat knitting machine |
-
2014
- 2014-06-03 CN CN201410238122.4A patent/CN104043835A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0523651A2 (en) * | 1991-07-15 | 1993-01-20 | Mitsubishi Materials Corporation | Method for making high strength injection molded ferrous material |
| CN1133764A (en) * | 1996-01-19 | 1996-10-23 | 冶金工业部钢铁研究总院 | Method for producing high-gravity alloy manufactured product |
| CN102000824A (en) * | 2009-09-02 | 2011-04-06 | 东睦新材料集团股份有限公司 | Manufacturing method of cam of engine camshaft |
| CN102554234A (en) * | 2012-02-28 | 2012-07-11 | 惠州Tcl移动通信有限公司 | Processing method and supporting jig for metal injection molding structural parts |
| CN102847944A (en) * | 2012-04-27 | 2013-01-02 | 宝得粉末注射成形（常熟）有限公司 | Method for processing yarn guide nozzle for computer flat knitting machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785785A (en) * | 2015-04-01 | 2015-07-22 | 宝得粉末注射成形（常熟）有限公司 | Machining method for swing cam for car steering control system |
| CN112296341A (en) * | 2020-09-15 | 2021-02-02 | 广州市鑫富塑胶有限公司 | Drop gun needle and preparation method thereof |
| WO2022099686A1 (en) * | 2020-11-12 | 2022-05-19 | 三阳纺织有限公司 | Cam component manufacturing method and use in textile machines |
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Application publication date: 20140917 |