CN104294495B - A kind of horizontal transmission shaft of sewing machine and working method thereof - Google Patents
A kind of horizontal transmission shaft of sewing machine and working method thereof Download PDFInfo
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- CN104294495B CN104294495B CN201410451903.1A CN201410451903A CN104294495B CN 104294495 B CN104294495 B CN 104294495B CN 201410451903 A CN201410451903 A CN 201410451903A CN 104294495 B CN104294495 B CN 104294495B
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2209/00—Use of special materials
- D05D2209/12—Metals or metal coatings
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Abstract
The present invention relates to a kind of horizontal transmission shaft of sewing machine and working method thereof, belong to sewing machine technique field. The horizontal transmission shaft of described sewing machine, comprises a main shaft and is divided into the connecting arm at main shaft two ends, and there is mobile axle bed at main shaft two ends is provided with axis hole, two connecting arms are all axially arranged with connection hole, laterally being provided with deep-slotted chip breaker on main shaft, be provided with groove on deep-slotted chip breaker, connecting arm is provided with threaded hole; Horizontal transmission shaft is obtained by the aluminium alloy of following component (mass percent): Si6.5-7.0, Mg0.35-0.8, Cu0.05-0.15, Fe0.08-0.17, Mn0.1-0.2, Zn0.05-0.08, Sr��0.02, Cr0.1-0.35, Ti0.1-0.15, V��0.03, Re��0.02, surplus is aluminium, and discloses its working method. Production technique of the present invention is simple, horizontal transmission shaft good combination property.
Description
Technical field
The invention belongs to sewing machine technique field, it relates to a kind of horizontal transmission shaft of sewing machine and working method thereof.
Background technology
One or more sewing thread used by sewing machine, forms one or more line marks on sewing, makes one or more layers sewing interweave or sew up the machine of getting up. The sewing function sewing goods such as fabric and leather, plastics, paper such as cotton, fiber crops, silk, hair, regenerated fiber, the line mark neat appearance stitched out, firmly smooth, sewing velocity is fast, easy to use.
The driving part of existing sewing machine is made up of parts such as frame, hand-operated device or electric motor, frame is the pillar of machine, carry platen and foot board, during use, operator steps on foot board, by the rotation of crank handle turns belt pulley, being rotated by belt drive chicken head again, hand-operated device or electric motor majority are directly contained on head.
The shuttle axle (i.e. transmission shaft) coordinated with machine pin is installed in platen, shuttle axle moves axially in platen inside, reach the object of line sending, shuttle axle moves axially in process, also need to rotate with one end of shuttle axle, therefore, it is respectively arranged with mobile axle bed at the two ends of shuttle axle, mobile axle bed has offered axis hole, in order to make shuttle axle rotate flexibly, general mobile axle bed is away from shuttle axle body, like this could while the intensity of satisfied mobile axle bed, when shuttle axle is rotated and other component separate, but owing to mobile axle bed is away from shuttle axle body, therefore the size moving axle bed is bigger, the space occupied is also bigger, easily when shuttle axle rotates and other component collide, during process for processing, this position material used is also more, the cost dropped into is caused to increase.
In sum, in order to solve the technical problem of above-mentioned shuttle axle, it is necessary to design and a kind of move the sewing machine horizontal drive shaft that axle bed volume is less, integral production cost is lower.
Summary of the invention
It is an object of the invention to for the problems referred to above that prior art exists, it is proposed that mobile axle bed volume is less, integral production cost is lower, the sewing machine horizontal drive shaft of long service life.
The object of the present invention realizes by following technical proposal: a kind of horizontal transmission shaft of sewing machine, the connecting arm comprising a main shaft and be divided into main shaft two ends and be parallel to each other, described main shaft two ends extend respectively to main shaft the same side and are formed with mobile axle bed, two move axis on axle bed offers coaxial axis hole, it is coaxial that connection hole and two connection holes have all axially been offered in two connecting arm one end, described main shaft laterally offers the deep-slotted chip breaker coaxial with axis hole, described deep-slotted chip breaker axially arranges and deep-slotted chip breaker two ends are connected with connecting arm respectively, deep-slotted chip breaker is provided with the groove of inwardly depression, described connecting arm is offered threaded hole and threaded hole communicates in hole with being connected, wherein, described horizontal transmission shaft is obtained by aluminium silicon magnesium system cast aluminium alloy, described aluminium silicon magnesium system cast aluminium alloy is grouped into by the one-tenth of following mass percent: Si:6.50%-7.00%, Mg:0.35%-0.80%, Cu:0.05%-0.15%, Fe:0.08%-0.17%, Mn:0.10%-0.20%, Zn:0.05%-0.08%, Sr :��0.02%, Cr:0.10%-0.35%, Ti:0.10%-0.15%, V :��0.03%, Re :��0.02%, individual event impurity content��0.03% in other impurity elements, impurity element total content��0.1%, surplus is aluminium and inevitable impurity.
In the aluminium silicon magnesium system cast aluminium alloy that above-mentioned horizontal drive shaft is used, Mg, Cu, Zn solid solubility in Al is relatively big, and they can not only dissolve in ��solidsolution to some extent, makes the complex structure of sosoloid, and can generate strengthening phase CuAl in the alloy2��Mg2Si etc., play the effect of solution strengthening, thus improve the intensity of alloy. The existence of zinc element is possible not only to the dissolution rate and the solubleness that improve Cu, it is to increase the plasticity of alloy, and can form strengthening phase MgZn with Mg2Compound, significantly improves tensile strength and the surrender hardness of alloy. But too much Zn can increase the stress corrosion crack tendency of alloy, and in the alloy that therefore above-mentioned horizontal transmission shaft is used, the consumption of zinc element controls at 0.05%-0.80%. Si can form binary or multi-element eutectic tissue in aluminium silicon magnesium system cast aluminium alloy, and along with the increase of Si content, in tissue, eutectiferous quantity increases gradually on the one hand, thus improves the mobility of alloy; The linear shrinkage ratio of alloy can be reduced on the other hand, thus reduce its hot proneness, make alloy have more excellent comprehensive castability. In addition, suitable within the specific limits increase Si content can also improve tensile strength and the resistance to corrosion of alloy.
Fe in aluminium alloy generally with the compound of needle-like or sheet such as FeAl3��Fe2Si2Al2Form exist, produce to isolate effect to matrix, the mechanical property easily producing stress concentration phenomenon and reducing alloy is such as elongation and plasticity. But in castingprocesses, in order to reduce alloy liquid to the adhesion of mould, this alloy needs there is a certain amount of ferro element. And in order to effectively suppress the harmful effect of Fe phase, this alloy adds the Sr element within the Mn element and 0.02% of 0.10%-0.20%, utilize the deleterious effect with Fe in Mn, the needle-like Fe phase in alloy is made to change into the Al-Si-Fe-Mn phase of Chinese character shape, herring-bone form and flowers shape etc., thus improve the intensity of alloy, plasticity and physicals, and eliminate fragility. Meanwhile, Mn adds the intensity that can also improve alloy, forms Al with Al6Mn compound thus refinement recrystal grain.Although and Sr add the Fe phase that can not change in alloy, but the form of the eutectic silicon in alloy can be made to turn into threadiness from needle-like, thus improve its mechanical property.
In addition, Cr can form intermetallic compound in Al, and involutory gold utensil has certain strengthening effect, also can improve the toughness of alloy simultaneously, reduce the susceptibility of its stress corrosion crack. Ti forms TiAl with Al in the alloy2Compound, heterogeneous necleus when becoming solid solution crystal, plays the effect of refinement cast structure and seam organization. Ti can also improve the resistance to corrosion of aluminium alloy simultaneously. And in alloy of the present invention, add a small amount of V, it is possible not only to form VAl11Infusible compound, plays the effect of crystal grain thinning, it is also possible to plays refinement recrystallized structure, improve the effect of recrystallization temperature. Adding a small amount of Re element in the alloy, play on the one hand the effect of crystal grain thinning, Re easily adsorbs segregation at the crystal boundary of molten aluminium with on practising physiognomy on the other hand, fills up the defect on crystal face, thus ensures the metallurgical quality of molten aluminium.
In sum, the aluminium silicon magnesium system cast aluminium alloy that horizontal transmission shaft of the present invention is used, on the basis adding principal element Si and Mg, with the addition of the elements such as Cu, Zn, Mn, Fe, Ti, Cr, V, Re, by the reasonable compatibility of these compositions, the mechanical property of the aluminium alloy making to obtain, mechanical property, corrosion resistance nature are all better, are applied in horizontal transmission shaft, can significantly improve the work-ing life of the horizontal transmission shaft of the present invention.
In above-mentioned a kind of horizontal transmission shaft of sewing machine, a connecting arm is wherein provided with slightly extension portion wider than connecting arm, extension portion axially offers the satellite hole simultaneously running through extension portion and connecting arm.
2nd object of the present invention is to provide the working method of a kind of above-mentioned horizontal transmission shaft, and described working method comprises the steps:
S1, batching: according to moiety and the mass percent batching thereof of above-mentioned horizontal transmission shaft aluminium silicon magnesium system cast aluminium alloy used;
S2, melting: the aluminium ingot first adding half, add magnesium, zinc, copper and remaining aluminium ingot after fusing until aluminium ingot completely, until after magnesium, zinc, copper melts completely, adding master alloy when temperature of aluminum liquid is 710-740 DEG C and stir evenly at 720-770 DEG C;
S3, die casting: successively carry out removing the gred and refinery by de-gassing by the aluminium liquid after above-mentioned melting, at 640-670 DEG C, aluminium hydraulic pressure is cast onto in the mold cavity that temperature is 250-280 DEG C, and under the high pressure of 70-80MPa pressurize 15-20s, shaping horizontal transmission shaft blank;
S4, thermal treatment: above-mentioned horizontal transmission shaft blank is carried out solution treatment and ageing treatment, and wherein the temperature of solution treatment is 540-550 DEG C, is incubated 6-12 hour, and the temperature of ageing treatment is 160-180 DEG C, is incubated 6-8 hour, cools to obtain horizontal transmission shaft.
Wherein, magnesium described in step S2 is pure magnesium, and zinc is pure zinc, and copper is electrolytic copper; Aluminum titanium alloy that aluminum chromium that aluminum-vanadium alloy that al-sr alloy that ferroaluminium that alumal that the aluminum silicon alloy of described master alloy to be silicone content be 13-15%, Fe content are 10-12%, iron level are 7-10%, content of strontium are 5-8%, content of vanadium are 6-10%, chromium content are 8-10%, titanium content are 7-10%, rhenium content are the aluminium rhenium alloys of 5-8%.
Refining temperature described in step S3 is 730-760 DEG C, and refining time is 12-18min, and refining agent is hexachloroethane.
The technique of die casting described in step S3 is first carry out slow shot with the speed of 0.17-0.3m/s, when injection stroke is 380-420mm, then carries out fast shot with the speed of 2.0-3.0m/s, thus is cast onto in mold cavity by aluminium hydraulic pressure.
Heat treated object described in step S4 is improve mechanical property and the corrosion resistance nature of alloy, to improve its processing characteristics such as cutting ability and welding. Wherein, the main purpose of solution treatment improves plasticity and the toughness of alloy, for follow-up age hardening process is ready. The temperature and time of solution treatment must strict control, and it determines with dissolution law and service requirements primarily of precipitating out mutually in alloy, makes solute atoms be solidly soluted in sosoloid to greatest extent to ensure, alloy can not be made again to melt simultaneously. For retainer of the present invention, in order to ensure the mechanical property of its finished product, mechanical property etc., the temperature of solution treatment is unsuitable too high, and the time should not be excessively long, and therefore the temperature of the horizontal transmission shaft solution treatment of the present invention is 540-550 DEG C, and soaking time is 6-12 hour. And ageing treatment is a quite complicated age-hardening process, its essence is that Segregation solute atom forms the result of hardened zone. Namely aluminium alloy is when Quench heating, and fast owing to cooling, the room formed in alloy has little time to move out and be fixed in crystal, and is mostly combined with solute atoms. And to be changed to equilibrium state by unsteady state due to supersaturated solid solution, the existence in room accelerates the diffusion of solute atoms thus accelerates the segregation of solute atoms. Ageing treatment too high or too low for temperature, overlong time or too short, the strengthening effect of alloy all can be undesirable, and therefore in order to ensure strengthening effect, the temperature of the horizontal transmission shaft ageing treatment of the present invention is 160-180 DEG C, and soaking time is 6-8 hour. Wherein, after solution treatment, also comprising anxious cold quenching process before ageing treatment, the water temperature of quench treatment is 60-90 DEG C, and the time is 3-5min.
Compared with prior art, the useful effect of the present invention is:
1, in this transmission shaft, deep-slotted chip breaker has been offered in the side being positioned at mobile axle bed on main shaft, deep-slotted chip breaker is coaxial with two axis holes, the two ends of deep-slotted chip breaker are connected with the mobile axle bed of corresponding one end respectively, transmission shaft is taking the center of axis hole as axis rotation, under the effect of deep-slotted chip breaker, main shaft can not collide with other component, compared with existing transmission shaft, the rotation axle center of whole horizontal transmission shaft is close toward major axes orientation, effectively reduce size and the spatial volume of mobile axle bed, save the materials'use amount of mobile axle seat portion simultaneously, save certain input cost, groove on deep-slotted chip breaker, other parts in sewing machine can be held, when making whole horizontal transmission shaft arrive pre-fixed point in rotation process can of short duration stopping and horizontal transmission shaft is fixed, prevent its transition from rotating.
2, simultaneously, the threaded hole offered on the connecting arm be connected hole and communicate, when connecting arm is connected with other component, by this threaded hole, can play the effect regulating and being connected distance between other component, it may also be useful to more flexible.
3, the present invention's horizontal transmission shaft employing aluminium silicon magnesium system cast aluminium alloy obtains, by the reasonable compatibility of each composition and simple technique, the mechanical property of the horizontal transmission shaft making to obtain, mechanical property, corrosive nature etc. be all good, it is to increase the over-all properties of horizontal transmission shaft, extends its work-ing life.
Accompanying drawing explanation
Fig. 1 is the front perspective view of a preferred embodiment of the present invention.
Fig. 2 is the back side perspective view of a preferred embodiment of the present invention.
In figure, 100, main shaft; 110, axle bed is moved; 111, axis hole; 120, deep-slotted chip breaker; 121, groove;200, connecting arm; 210, hole is connected; 220, threaded hole; 230, extension portion; 231, satellite hole.
Embodiment
The following is specific embodiments of the invention and by reference to the accompanying drawings, the technical scheme of the present invention is further described, but the present invention is not limited to these embodiments.
Such as Fig. 1, shown in Fig. 2, a kind of horizontal transmission shaft of sewing machine, the connecting arm 200 comprising a main shaft 100 and be divided into main shaft 100 two ends and be parallel to each other, described main shaft 100 two ends extend respectively to phase the same side and are formed with mobile axle bed 110, two move axis on axle bed 110 offers coaxial axis hole 111, two connecting arm 200 one end axially offered connect hole 210 and two connection holes 210 coaxial, described main shaft 100 laterally offers the deep-slotted chip breaker 120 coaxial with axis hole 111, described deep-slotted chip breaker 120 prolongs axially setting and two ends and is connected with connecting arm 200 respectively, deep-slotted chip breaker 120 is provided with the groove 121 of inwardly depression, described connecting arm 200 is offered threaded hole 220 and threaded hole 220 and has been connected hole 210.
This horizontal transmission shaft adopts said structure, deep-slotted chip breaker 120 has been offered in the side being positioned at mobile axle bed 110 on main shaft 100, deep-slotted chip breaker 120 is coaxial with two axis holes 111, the two ends of deep-slotted chip breaker 120 are connected with the mobile axle bed 110 of corresponding one end respectively, rotating shaft can be installed in axis hole 111, transmission shaft is taking the center of axis hole 111 as axis rotation, under the effect of deep-slotted chip breaker 120, main shaft 100 can not collide with other component, compared with existing transmission shaft, the rotation axle center of whole horizontal transmission shaft is close toward main shaft 100 direction, effectively reduce size and the spatial volume of mobile axle bed 110, save the materials'use amount of mobile axle bed 110 part simultaneously, save certain input cost.
Groove 121 on deep-slotted chip breaker 120, can hold other parts in sewing machine, when making whole horizontal transmission shaft arrive pre-fixed point in rotation process can of short duration stopping and horizontal transmission shaft is fixed, prevent its transition from rotating.
Simultaneously, main shaft 100 is connected with other component by connecting arm 200, the other end of horizontal transmission shaft can be made also to realize the rotation of other effect, the threaded hole 220 offered on connecting arm 200 and be connected hole 210 and communicate, when connecting arm 200 is connected with other component, by this threaded hole 220, the effect being connected distance between adjustment and other component can be played, it may also be useful to more flexible.
Further, a connecting arm 200 is wherein provided with slightly extension portion 230 wider than connecting arm 200, extension portion 230 has axially offered satellite hole 231 and satellite hole 231 axially runs through extension portion 230 and connecting arm 200 simultaneously.
As the horizontal transmission shaft that can move axially, under the own wt of whole transmission shaft, mobile axle bed 110 can be produced bigger abrasion by long-term moving axially, and on connecting arm 200, offer satellite hole 231, auxiliary axle can be installed in satellite hole 231, can effectively share the weight of whole horizontal transmission shaft, reduce the abrasion of axis hole 111 in transport process, and extension portion 230 is set on connecting arm 200, make satellite hole 231 run through connecting arm 200 and extension portion 230 simultaneously, can make whole transmission shaft while realizing auxiliary transmission, ensure the intensity of connecting arm 200, prevent connecting arm 200 transition abrasion and cause connecting arm 200 to rupture.
Wherein, described horizontal transmission shaft is obtained by aluminium silicon magnesium system cast aluminium alloy, described aluminium silicon magnesium system cast aluminium alloy is grouped into by the one-tenth of following mass percent: Si:6.50%-7.00%, Mg:0.35%-0.80%, Cu:0.05%-0.15%, Fe:0.08%-0.17%, Mn:0.10%-0.20%, Zn:0.05%-0.08%, Sr :��0.02%, Cr:0.10%-0.35%, Ti:0.10%-0.15%, V :��0.03%, Re :��0.02%, individual event impurity content��0.03% in other impurity elements, impurity element total content��0.1%, surplus is aluminium and inevitable impurity.
Table 1: embodiment 1-3 is for the preparation of the moiety of horizontal transmission shaft and mass percent
Embodiment 1
Batching: according to moiety and the mass percent batching thereof of transmission shaft horizontal described in table 1 embodiment 1 aluminium silicon magnesium system cast aluminium alloy used;
Melting: the aluminium ingot first adding half, adds magnesium, zinc, copper and remaining aluminium ingot after fusing until aluminium ingot completely, until after magnesium, zinc, copper melts completely, when temperature of aluminum liquid is 710 DEG C, then adding master alloy and stir evenly at 720 DEG C; Wherein magnesium is pure magnesium, zinc is pure zinc, copper is electrolytic copper, and master alloy refers to that aluminum titanium alloy that aluminum chromium that aluminum-vanadium alloy that al-sr alloy that ferroaluminium that alumal that silicone content be the aluminum silicon alloy of 13-15%, Fe content is 10-12%, iron level are 7-10%, content of strontium are 5-8%, content of vanadium are 6-10%, chromium content are 8-10%, titanium content are 7-10%, rhenium content are the aluminium rhenium alloys of 5-8%.
Die casting: successively carry out removing the gred and refinery by de-gassing by the aluminium liquid after melting, its refining temperature is 730 DEG C, refining time is 13min, refining agent is hexachloroethane, at temperature is 640 DEG C, with the speed of 0.18m/s, aluminium liquid is first carried out slow shot, when injection stroke is 380mm, fast shot is carried out again with the speed of 2.0m/s, thus aluminium hydraulic pressure is cast onto in the mold cavity that temperature is 250 DEG C, and under the high pressure of 70MPa pressurize 15s, shaping horizontal transmission shaft blank;
Thermal treatment: above-mentioned horizontal transmission shaft blank is carried out solution treatment and ageing treatment, and wherein solid solution temperature is 540 DEG C, is incubated in the water of 65 DEG C quenched rapidly by horizontal transmission shaft blank immediately after 6 hours anxious cold 3min; Artificial aging treatment temp is 160 DEG C, is incubated naturally cooling after 6 hours, obtains horizontal transmission shaft.
Embodiment 2
Batching: according to moiety and the mass percent batching thereof of transmission shaft horizontal described in table 1 embodiment 2 aluminium silicon magnesium system cast aluminium alloy used;
Melting: the aluminium ingot first adding half, adds magnesium, zinc, copper and remaining aluminium ingot after fusing until aluminium ingot completely, until after magnesium, zinc, copper melts completely, when temperature of aluminum liquid is 725 DEG C, then adding master alloy and stir evenly at 740 DEG C; Wherein magnesium is pure magnesium, zinc is pure zinc, copper is electrolytic copper, and master alloy refers to that aluminum titanium alloy that aluminum chromium that aluminum-vanadium alloy that al-sr alloy that ferroaluminium that alumal that silicone content be the aluminum silicon alloy of 13-15%, Fe content is 10-12%, iron level are 7-10%, content of strontium are 5-8%, content of vanadium are 6-10%, chromium content are 8-10%, titanium content are 7-10%, rhenium content are the aluminium rhenium alloys of 5-8%.
Die casting: successively carry out removing the gred and refinery by de-gassing by the aluminium liquid after melting, its refining temperature is 745 DEG C, refining time is 15min, refining agent is hexachloroethane, at temperature is 650 DEG C, with the speed of 0.2m/s, aluminium liquid is first carried out slow shot, when injection stroke is 400mm, fast shot is carried out again with the speed of 2.5m/s, thus aluminium hydraulic pressure is cast onto in the mold cavity that temperature is 260 DEG C, and under the high pressure of 75MPa pressurize 18s, shaping horizontal transmission shaft blank;
Thermal treatment: above-mentioned horizontal transmission shaft blank is carried out solution treatment and ageing treatment, and wherein solid solution temperature is 545 DEG C, is incubated in the water of 70 DEG C quenched rapidly by horizontal transmission shaft blank immediately after 8 hours anxious cold 3.5min; Artificial aging treatment temp is 170 DEG C, is incubated naturally cooling after 7 hours, obtains horizontal transmission shaft.
Embodiment 3
Batching: according to moiety and the mass percent batching thereof of transmission shaft horizontal described in table 1 embodiment 3 aluminium silicon magnesium system cast aluminium alloy used;
Melting: the aluminium ingot first adding half, adds magnesium, zinc, copper and remaining aluminium ingot after fusing until aluminium ingot completely, until after magnesium, zinc, copper melts completely, when temperature of aluminum liquid is 740 DEG C, then adding master alloy and stir evenly at 760 DEG C; Wherein magnesium is pure magnesium, zinc is pure zinc, copper is electrolytic copper, and master alloy refers to that aluminum titanium alloy that aluminum chromium that aluminum-vanadium alloy that al-sr alloy that ferroaluminium that alumal that silicone content be the aluminum silicon alloy of 13-15%, Fe content is 10-12%, iron level are 7-10%, content of strontium are 5-8%, content of vanadium are 6-10%, chromium content are 8-10%, titanium content are 7-10%, rhenium content are the aluminium rhenium alloys of 5-8%.
Die casting: successively carry out removing the gred and refinery by de-gassing by the aluminium liquid after melting, its refining temperature is 750 DEG C, refining time is 17min, refining agent is hexachloroethane, at temperature is 670 DEG C, with the speed of 0.25m/s, aluminium liquid is first carried out slow shot, when injection stroke is 420mm, fast shot is carried out again with the speed of 3.0m/s, thus aluminium hydraulic pressure is cast onto in the mold cavity that temperature is 270 DEG C, and under the high pressure of 80MPa pressurize 20s, shaping horizontal transmission shaft blank;
Thermal treatment: above-mentioned horizontal transmission shaft blank is carried out solution treatment and ageing treatment, and wherein solid solution temperature is 550 DEG C, is incubated in the water of 80 DEG C quenched rapidly by horizontal transmission shaft blank immediately after 10 hours anxious cold 4min; Artificial aging treatment temp is 180 DEG C, is incubated naturally cooling after 8 hours, obtains horizontal transmission shaft.
Horizontal transmission shaft obtained in embodiment 1-3 is carried out performance test, and test result is as shown in table 2.
The performance test results of the horizontal transmission shaft that table 2: embodiment of the present invention 1-3 is obtained
The horizontal transmission shaft that the ZL 101 alloy that comparative example is common is obtained.
From table 1 and table 2, the horizontal transmission shaft of sewing machine of the present invention adopts aluminium silicon magnesium system cast aluminium alloy to obtain, on the basis adding principal element Si and Mg, with the addition of the elements such as Cu, Zn, Mn, Fe, Ti, Cr, V, Re, by the reasonable compatibility between these moietys and simple technique, corrosion resistance and good, its mechanical property such as tensile strength, hardness of obtained horizontal transmission shaft significantly improve, and extend the work-ing life of horizontal transmission shaft.
Specific embodiment described herein is only to the present invention's spirit explanation for example. Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by those skilled in the art, but can't deviate the spirit of the present invention or surmount the scope that appended claims defines.
Claims (6)
1. the horizontal transmission shaft of sewing machine, the connecting arm comprising a main shaft and be divided into main shaft two ends and be parallel to each other, it is characterized in that, described main shaft two ends extend respectively to main shaft the same side and are formed with mobile axle bed, two move axis on axle bed offers coaxial axis hole, it is coaxial that connection hole and two connection holes have all axially been offered in two connecting arm one end, described main shaft laterally offers the deep-slotted chip breaker coaxial with axis hole, described deep-slotted chip breaker axially arranges and deep-slotted chip breaker two ends are connected with connecting arm respectively, deep-slotted chip breaker is provided with the groove of inwardly depression, described connecting arm is offered threaded hole and threaded hole communicates in hole with being connected,Wherein, described horizontal transmission shaft is obtained by aluminium silicon magnesium system cast aluminium alloy, described aluminium silicon magnesium system cast aluminium alloy is grouped into by the one-tenth of following mass percent: Si:6.50%-7.00%, Mg:0.35%-0.80%, Cu:0.05%-0.15%, Fe:0.08%-0.17%, Mn:0.10%-0.20%, Zn:0.05%-0.08%, Sr :��0.02%, Cr:0.10%-0.35%, Ti:0.10%-0.15%, V :��0.03%, Re :��0.02%, individual event impurity content��0.03% in other impurity element, impurity element total content��0.1%, surplus is aluminium and inevitable impurity.
2. the horizontal transmission shaft of sewing machine according to claim 1, it is characterised in that, a connecting arm is wherein provided with slightly extension portion wider than connecting arm, extension portion axially offers the satellite hole simultaneously running through extension portion and connecting arm.
3. the working method of the horizontal transmission shaft of sewing machine as described in the appended claim 1, it is characterised in that, described working method comprises the steps:
S1, batching: according to moiety and the mass percent batching thereof of transmission shaft horizontal described in claim 1 aluminium silicon magnesium system cast aluminium alloy used;
S2, melting: the aluminium ingot first adding half, add magnesium, zinc, copper and remaining aluminium ingot after fusing until aluminium ingot completely, until after magnesium, zinc, copper melts completely, adding master alloy when temperature of aluminum liquid is 710-740 DEG C and stir evenly at 720-770 DEG C;
S3, die casting: successively carry out removing the gred and refinery by de-gassing by the aluminium liquid after above-mentioned melting, at 640-670 DEG C, aluminium hydraulic pressure is cast onto in the mold cavity that temperature is 250-280 DEG C, and under the high pressure of 70-80MPa pressurize 15-20s, shaping horizontal transmission shaft blank;
S4, thermal treatment: above-mentioned horizontal transmission shaft blank is carried out solution treatment and ageing treatment, and wherein the temperature of solution treatment is 540-550 DEG C, is incubated 6-12 hour, and the temperature of ageing treatment is 160-180 DEG C, is incubated 6-8 hour, cools to obtain horizontal transmission shaft.
4. the working method of the horizontal transmission shaft of sewing machine according to claim 3, it is characterised in that, magnesium described in step S2 is pure magnesium, and zinc is pure zinc, and copper is electrolytic copper; Aluminum titanium alloy that aluminum chromium that aluminum-vanadium alloy that al-sr alloy that ferroaluminium that alumal that the aluminum silicon alloy of described master alloy to be silicone content be 13-15%, Fe content are 10-12%, iron level are 7-10%, content of strontium are 5-8%, content of vanadium are 6-10%, chromium content are 8-10%, titanium content are 7-10%, rhenium content are the aluminium rhenium alloys of 5-8%.
5. the working method of the horizontal transmission shaft of sewing machine according to claim 3, it is characterised in that, the refining temperature described in step S3 is 730-760 DEG C, and refining time is 12-18min, and refining agent is hexachloroethane.
6. the working method of the horizontal transmission shaft of sewing machine according to claim 3, it is characterised in that, after solution treatment described in step s 4 which, before ageing treatment, also comprise anxious cold quenching process, the water temperature of quench treatment is 60-90 DEG C, and the time is 3-5min.
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| CN106498224A (en) * | 2016-11-28 | 2017-03-15 | 宁波瑞铭机械有限公司 | A kind of cloth pressing foot |
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| CN106756317B (en) * | 2016-11-29 | 2018-09-07 | 宁波瑞铭机械有限公司 | A kind of sewing machine horizontal transmission axis and its processing method |
| WO2018113838A1 (en) * | 2016-12-22 | 2018-06-28 | Ksm Castings Group Gmbh | Al casting alloy |
| US10801095B2 (en) * | 2018-01-10 | 2020-10-13 | GM Global Technology Operations LLC | Aluminum alloy and method of manufacturing |
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