CN1986937A - Sewing machine component - Google Patents
Sewing machine component Download PDFInfo
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- CN1986937A CN1986937A CNA2006101684598A CN200610168459A CN1986937A CN 1986937 A CN1986937 A CN 1986937A CN A2006101684598 A CNA2006101684598 A CN A2006101684598A CN 200610168459 A CN200610168459 A CN 200610168459A CN 1986937 A CN1986937 A CN 1986937A
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- layer
- sewing machine
- dlc
- hardness
- intermediate layer
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B71/00—Lubricating or cooling devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/32—Sewing machines
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sewing Machines And Sewing (AREA)
- Physical Vapour Deposition (AREA)
Abstract
The invention provides a sewing machine with excellent abrasion resistance, burning viscous resistance, sliding property even under the condition of restricting supply of the lubrication. In the sewing machine (1), A nitriding compound layer composed of multiorifice layer and tectum layer are generated on the surface of parent metal composed of low carbon alloy steel and mild steel without treatment of hardness, on which having an intermediate layer composed of metal layer of Cr oe W and so on by the way of sputtering and coating, and that on which a DLC layer is formed. Joint sealing property of the parent metal and the DLC layer is improved, by providing an intermediate layer between the parent metal and the DLC layer. In addition, by forming DLC layer on the furthest surface, surface hardness is improved and owing to reducing the frictional resistance of the surface, lubricity is improved. Thereby, even under the drying environment without forceful oil supply, the same durability as the existing sewing machine for forceful oil supply is obtained.
Description
Technical field
The present invention relates to part sliding part has each other been implemented the sewing machine component of wear-resistant processing.
Background technology
All the time, Sewing machines has a lot of parts each other with the sliding part of high-speed slide.For example, in the Sewing machines made from the two-shipper pin, be provided with known needle bar drive device, it is selected any or two in two eedles and can drive up and down it.In such needle bar drive device, the shank drive link is arranged being linked on the main shaft of motor of sewing machine to rotate to link freely via eccentric hammer, rotating to link freely via pin on the shank drive link has the shank abut.And, on the shank abut, maintaining two shanks that keep eedle at front end, under any situation of making in only utilizing these two shanks, another shank slides mutually with the shank abut.
But, for these parts that needle bar drive device possessed, be to form by cheaper mild steel or low-carbon alloy steels such as processing charges.In general, use at sliding part under the situation of mild steel or low-carbon alloy steel, for the wearing and tearing or the burning that prevent sliding contact surface are glued, heat treatments such as carburizing and quenching tempering are implemented on its surface, but because selectivity keeps the complex structure of the shank abut of above-mentioned two eedles, so the wall thickness of part, during the carburizing and quenching temper of under having implemented the high temperature more than 800 ℃, having carried out, part deformation and can't keep dimensional accuracy.Therefore, the structure of employing is: implement the low carbo-nitriding of treatment temperature and handle, and by oil supply mechanism sliding contact surface is forced fuel feeding, prevent wearing and tearing thus.
But if oil supply mechanism is set, then existing makes dirty because of dispersing of oil makes the problem of thing, so wish in recent years to use lubricating ester, does not promptly have fuel feedingization and is lubricated.At this, though be not the field of Sewing machines, but technology as the sliding contact surface that is applicable to the semiconductor basal disc, for the lubricity that realizes not having fuel feedingization and improve thin-walled parts, produced following prior art: promptly, the technology (for example, referring to Patent Document 1,2) of diamond-like-carbon (hereinafter referred to as the DLC) coating (diamond like carbon coating) of implement that treatment temperature is low, case hardness and sliding are also superior.
Patent documentation 1: TOHKEMY 2002-321026 communique
Patent documentation 2: TOHKEMY 2002-210525 communique
But, the problem that exists in above-mentioned patent documentation 1 and patent documentation 2 disclosed technology is, though can tackle the load of the less sliding contact surface that acts on semiconductor basal disc etc., but load for the degree of the sliding contact surface that acts on Sewing machines, then hardened layer is thin, can't obtain enough effects.
In addition, when the DLC coating is implemented on the surface of the mother metal (being designated hereinafter simply as former material) of the mild steel that do not carry out cure process,,, be difficult to form the DLC epithelium of adequate thickness that can anti-slip so connecting airtight property is poor because difference of hardness is big.
Summary of the invention
The present invention proposes in order to solve above-mentioned problem, even purpose is to provide a kind of sewing machine component that also has excellent mar proof, anti-burning viscosity and sliding under the condition that the fuel feeding of lubricating oil is restricted.
In order to overcome the above problems, technical scheme 1 described invention provides a kind of sewing machine component, it is the sewing machine component that wear-resistant processing has been implemented on the surface of the mother metal (31) that constitutes at the steel by the cure process that heats generation, it is characterized in that, surface at described mother metal forms nitride film (32), this nitride film (32) has the compacted zone (32a) that combines with this mother metal, with the porous layer (32b) that is combined on this compacted zone, and then it is last across intermediate layer (33 at nitride film (32), 34) form high rigidity tunicle (35,36), the hardness zone in described intermediate layer is in this nitride film (32) and high rigidity tunicle (35,36) between the hardness zone.
The invention of technical scheme 2 is characterised in that in technical scheme 1 described sewing machine component, described high rigidity tunicle is formed by diamond-like-carbon (DLC) tunicle (35).
The invention of technical scheme 3 is characterised in that in technical scheme 2 described sewing machine components, described diamond like carbon carbon coating is made of a kind of diamond like carbon carbon coating that contains metal.
The invention of technical scheme 4 is characterised in that in technical scheme 3 described sewing machine components, the metal that described diamond like carbon carbon coating contains is chromium (Cr) or tungsten (W).
The invention of technical scheme 5 is characterised in that in technical scheme 1 described sewing machine component, described high rigidity tunicle is formed by tungsten carbide/carbon (WC/C) tunicle (36).
The invention of technical scheme 6 is characterised in that in technical scheme 2 or technical scheme 5 described sewing machine components, described intermediate layer is made of chromium (Cr) or tungsten (W).
The invention of technical scheme 7 is characterised in that, in technical scheme 2 or technical scheme 5 described sewing machine components, the described steel that heat the cure process of generation are that carburizing and quenching tempering or Q-tempering are handled mild steel, low-carbon alloy steel or the steel alloy that does not all carry out.
According to technical scheme 1 described invention, by the intermediate layer that the hardness zone is in hardness zone between the two is set between the high rigidity tunicle of nitride film and piece surface, the residual stress that mitigation produces between nitride film and high rigidity tunicle improves both connecting airtight property.
According to technical scheme 2 described inventions, can obtain the effect identical with described technical scheme 1, and because the DLC tunicle is the structure of amorphous, so can obtain high rigidity and level and smooth surface configuration.Therefore, can reduce the frictional resistance on mother metal surface significantly.Thus, can realize slick and sly sliding action and preventing in this sliding part heating.And then, even under the environment of the supply that limits lubricating oil, also can constitute mar proof, the superior sewing machine component of anti-burning viscosity.In addition, wait the member of the thinner wall section that produces thermal deformation, can make its surperficial hardening and slip good, can under dry environment, use for having because of quenching.
According to technical scheme 3 described inventions, can obtain the action effect identical with technical scheme 2, in addition, and then by making the DLC tunicle contain metal, improve connecting airtight property in the time of can being metal in the intermediate layer, even under harsh slip environment, also can keep the DLC tunicle securely.
According to technical scheme 4 described inventions, can obtain the effect identical with technical scheme 3, in addition, and then by making the DLC tunicle contain Cr or W, improve connecting airtight property in the time of can being Cr or W in the intermediate layer, even under harsh slip environment, also can keep the DLC tunicle securely.
According to technical scheme 5 described inventions, can obtain the effect identical with technical scheme 1 and technical scheme 2.
According to technical scheme 6 described inventions, can obtain the effect identical with technical scheme 2 and technical scheme 5, in addition, the intermediate layer is formed by Cr or W, can further improve the connecting airtight property of mother metal and tunicle.That is, the connecting airtight property of Cr or W and DLC or WC/C is good, even also can keep DLC or WC/C tunicle securely under harsh slip environment.
According to technical scheme 7 described inventions, can obtain the effect identical, in addition, especially wait the member of the thinner wall section that produces thermal deformation because of quenching for having with technical scheme 2 and technical scheme 5, can make its surperficial hardening and slip good, can under dry environment, use.
Description of drawings
Fig. 1 is the front view of the needle bar drive device of expression present embodiment;
Fig. 2 is the side view of the needle bar drive device of expression present embodiment;
Fig. 3 is the stereogram of the shank abut of expression present embodiment;
Fig. 4 is the concept map of lit-par-lit structure of the near surface that passes through the shank abut that surface treatment forms of expression present embodiment;
Fig. 5 is the enlarged photograph of lit-par-lit structure of the near surface that passes through the shank abut that surface treatment forms of expression present embodiment;
Fig. 6 is the enlarged photograph of near surface tissue of mother metal of the shank abut of expression present embodiment;
Fig. 7 is illustrated in the surface of nitride layer of shank abut of present embodiment across the concept map that is formed with the state of DLC layer by Cr layer and this two-layer intermediate layer that constitutes of W layer;
Fig. 8 be illustrated in present embodiment the surface of nitride layer of shank abut across the intermediate layer that constitutes by Cr the concept map at the state of the most surperficial WC/C of being formed with layer.
Among the figure: the 1-Sewing machines; The 10-shank; 30-shank abut; The 31-mother metal; 32-nitride layer (nitride compound layer); The 32a-compacted zone; 32b-porous (porous) layer; 33-intermediate layer (Cr); 34-intermediate layer (W); 35-DLC (diamond-like-carbon) layer; 36-WC/C (tungsten carbide/carbon) layer; 50-pin up-down mechanism; The 52-main shaft; The 53-eccentric hammer; The 54-needle bar crank; 55-shank supporting frame; The 60-clutch mechanism; The 61-clutch member; The 62-follower link; 63-presses pressing spring; 64-card claw stop; 65-presses pressing spring; The 80-switching mechanism.
The specific embodiment
Below, with reference to the accompanying drawings, describe the best mode of Sewing machines of the present invention in detail.
In the present embodiment, as Sewing machines, be that example describes with the two-shipper needle sewing machine of making by the two-shipper pin.In addition, in the following description, will be vertically direction as Z-direction, the length direction of transverse arm portion that is arranged at the state two-shipper needle sewing machine down of horizontal plane is made as Y direction, will be parallel and be made as X-direction with the direction of Y direction quadrature with the plate face of not shown needle plate.In addition, X-direction and Y direction and Z-direction are mutually orthogonal.
(overall structure of embodiment)
As shown in Figure 1, the Sewing machines of embodiments of the present invention (two-shipper needle sewing machine) 1 has not shown pin up-down mechanism, and the rotation motion of the main shaft 52 that this pin up-down mechanism will be rotated under the effect of not shown motor of sewing machine is changed to back and forth moving up and down along Z-direction.
In addition, Sewing machines 1 possesses the various mechanisms of making that are used to carry out based on the two-shipper pin, and as needle vibrating mechanism, it makes the front end of eedle move to direction of feed by making shank supporting frame 55 swings described later; With the feed mechanism of carrying sewn object along cloth feeding direction etc., but because these mechanisms are identical with known mechanism in the past, so repeat no more in the present embodiment.
The pin up-down mechanism is arranged at the front end inside of Sewing machines transverse arm portion.Described pin up-down mechanism possesses: needle bar crank 54, the rotation of one end are linked to the eccentric part in the eccentric hammer 53 of the front end setting of main shaft 52 freely; As the shank abut 30 of sewing machine component, it rotates the other end that is linked to needle bar crank 54 freely; As two shanks 10 of sewing machine component, it is held on this shank abut 30, and keeps eedle at front end respectively; With shank supporting frame 55, it is by independence and slide up and down and support this two shanks 10 freely, limits the moving direction of these two shanks 10.
And, if rotate, then, drive shank abut 30 up and down via eccentric hammer 53 and needle bar crank 54 at the driving lower main axis 52 of motor of sewing machine.Thus, two shanks 10 that are held on this shank abut 30 are moving back and forth up and down.
Shank abut 30 possesses: clutch mechanism, and it can be optionally switches to hold mode and releasing state with the maintenance of each shank 10; Position-limit mechanism, it will remain in shank supporting frame 55 by the shank 10 that this clutch mechanism has been removed hold mode; With switching mechanism 80, it selects any shank 10 by artificial input operation, and the hold mode of switch clutch mechanism and releasing state (with reference to figure 3).
And by operation shifting mechanism 80 artificially, under any situation of making in only using each shank 10, another shank 10 is held in shank supporting frame 55 at top dead center position.That is, owing on shank abut 30, only keep a shank 10, so between this shank abut 30 and another shank 10, produce sliding contact surface.In addition, each member of clutch mechanism also is a thin-wall construction, and produces slip with other members in its action.
(lit-par-lit structure of nitride film and DLC tunicle)
At this, the shank abut 30 of present embodiment forms as mother metal 31 with mild steel, low-carbon alloy steel or steel alloy as Fig. 4 and shown in Figure 5, is formed with the nitride compound layer 32 that is made of nitride on its surface.And then, in the Sewing machines 1 of present embodiment, on above-mentioned nitride compound layer 32, be formed with DLC (diamond-like-carbon: layer 35 diamond like carbon) across the intermediate layer 33 that constitutes by chromium (Cr).
As shown in Figure 6, mother metal 31 is formed by the line and staff control of ferrite part and pearlite part.That is, what the mother metal 31 of the shank abut 30 of present embodiment used is the former material of mild steel, low-carbon alloy steel or steel alloy, that is, be the steel that do not carry out the cure process of heating generations such as carburizing and quenching tempering.
The shank abut 30 of present embodiment owing to be built-in with above-mentioned various mechanism, so its wall thickness is 1.0～1.5mm, is compared the wall thickness attenuation with general shank abut 30.Therefore, for the deterioration of the dimensional accuracy that cure process caused of the carburizing and quenching tempering that prevents to carry out or Q-tempering etc., used the former material that does not carry out described processing in the temperature province more than 800 ℃.The hardness of this mother metal 31 is 200HV～300HV.
Nitride compound layer 32 (below, be called nitride layer 32) be to handle the surface that (carbo-nitriding processing) is formed at mother metal 31 by the salt bath tufftride in the low temperature zone below 600 ℃, by the nitride compound layer 32a of densification (below, be called compacted zone 32a) and form at the cavernous nitride compound layer 32b in its outside (below, be called porous layer 32b).
The processing of salt bath soft nitriding is to be undertaken by the chemical reaction shown in following formula (1) and (2).
2NaCN+O
2＝2NaCNO……(1)
4NaCNO＝2NaCN+Na
2CO
3+CO+2N……(2)
At this,, form nitride compound layer and a spot of carbide lamella on the surface of low-carbon alloy steel by the thermal decomposition of the NaCNO that in (1) formula, forms.Handle by described salt bath tufftride, form fine and close nicarbing compound layer 32a in the part of joining with mother metal 31.Its hardness is 900HV～1000HV.In addition, form low-density and have the cavernous nitride compound layer 32b of a plurality of emptying apertures in inside in face side.Its hardness is 500HV～700HV.
These compacted zones 32a and porous layer 32b constitute the nitride film in the present embodiment.
This intermediate layer 33 is formed with following layer, its hardness (hardness zone) is 700HV～800HV, hardness (hardness zone) 500HV～700HV than the porous layer 32b of above-mentioned nitride layer 32 is hard, and softer than hardness (hardness zone) 1500HV～3000HV of DLC layer 35 described later.That is, the hardness zone in intermediate layer 33 is between the hardness zone of nitride layer 32 and DLC layer 35, and is all good with the compatibility of any layer in nitride layer 32 and the DLC layer 35, possesses the function of the connecting airtight property that improves porous layer 32b and DLC layer 35.That is, this intermediate layer 33 forms the dipping bed of the hardness gradient that connects mother metal 31 and surperficial nitrogenize rete 32 that forms and DLC layer 35 described later, and is arranged for relaxing the residual stress of the inside of causing because of the big levels of direct stacked difference of hardness.In addition, as its result, improved the connecting airtight property of upper strata (being DLC layer 35 in the present embodiment) with respect to lower floor's (being mother metal 31 in the present embodiment).
It is the most surperficial of shank abut 30 that DLC layer 35 is formed on the intermediate layer 33.
The DLC layer 35 of present embodiment is to be formed by the ionization vapour deposition method.Promptly be following mode, in a vacuum, use high-temperature electric arc to discharge and the generation plasma, apply the mode of the bias voltage (bias) of negative (-) with mother metal 31 sides as electrode based on hot filament.The feature of this method is to carry out film thickness monitoring in nano-scale, can obtain the film of higher hardness.In addition, forming by the ionization vapour deposition method under the situation of DLC layer 35, compare with the high frequency plasma cvd method not can be in tunicle remaining hydrogen (H), be difficult for producing fragility, so be preferred.In addition, in the present embodiment, as mentioned above, the structure of employing is to make the intermediate layer 33 that is made of chromium on nitride layer 32, further stacked this DLC layer 35 on it.Therefore, compare with the situation that on mother metal 31 or nitride layer 32, directly forms DLC layer 35, because the difference of hardness of the member that contacts with this DLC layer 35 is little, so relaxed the residual stress of each interlayer significantly.That is, this DLC layer 35 of stably growing up with connecting airtight property of height forms enough thickly.
This DLC layer 35 is owing to be the structure of amorphous, so do not have grain boundary, for example, compares with the ganoine thin film of polycrystalline structure such as titanium nitride and to have very level and smooth surface.
In addition, DLC layer 35 has: as the diamond of total crystalline solid and the both sides' of the graphite with lit-par-lit structure characteristic.That is, DLC layer 35 has the hardness equal with diamond (1500HV～3000HV), and easy from surface come off the same with graphite promptly, has easy sliding property, flatness.
In addition, the DLC layer also can contain metal, especially as Cr or W.Thus, become better, can improve its mutual connecting airtight property with the compatibility in intermediate layer.
In addition, each sewing machine component of clutch mechanism 60 also possesses same mother metal, nitration case, intermediate layer, DLC layer.
In addition, in the present embodiment, though do not use lubricated wet goods fluid lubricant, better for the sliding that makes above-mentioned sliding part, lubricating grease has been used in coating on the sliding contact surface of shank 10 and shank abut 30.
(action of needle bar drive device)
Then, the action to the pin up-down mechanism 50 of the Sewing machines 1 of present embodiment describes.
At first, under the state that Sewing machines stops,, make the disarm state that remains in of any shank 10 in two shanks 10 by operating above-mentioned switching mechanism 80.
Then, if rotate in the driving lower main axis 52 and the eccentric hammer 53 of motor of sewing machine, then the front end of the needle bar crank of installing on eccentric hammer 53 54 moves up at upper and lower.By moving of needle bar crank 54, on its axis direction (above-below direction among Fig. 1), move back and forth at the shank abut of installing on this needle bar crank 54 30 and at the shank 10 that keeps on this shank abut 30.By the driving of shank 10, between shank 10 and shank abut 30, form sliding part.
At this, owing to be formed with DLC layer 35 on the surface of shank abut 30, so DLC layer 35 sliding-contact of the surface of shank 10 and shank abut 30.DLC layer 35 has superior friction and wear characteristic (tribological property) because of its level and smooth surface, therefore can obtain good sliding.That is, shank 10 and shank abut 30 slide smoothly.Therefore, the wear-resistant property of Sewing machines and durability are improved.
And then, according to the present application people's experiment, in the Sewing machines 1 of the present embodiment of having carried the shank abut 30 that the surface is formed with DLC layer 35, can move more than 1500 hours at least with 3000rpm, 50% real running rate.
Virtual condition in the market is, if be 2500rpm, 20% real running rate in the user mode of making the workshop, then can reach about 500 hours the real duration of runs in 1 year.
Relative therewith, in the Sewing machines 1 of present embodiment,,, then be equivalent to 1500 hours * 2.4=3600 hour so be converted into the market virtual condition because the acceleration factor of environment temperature and running rate is 2.4 times.
That is, Sewing machines 1 according to the embodiment of the present invention is even the running under dry environment if the actual user mode in market is above-mentioned user mode, then can be used 7 years at least.
That is, even coercively fed lubricating oil not, the drying Sewing machines that turns round with lubricating grease only also can obtain and wear-resistant property identical to the existing sewing machine of sliding part coercively fed lubricating oil or on it.
(effect of embodiment)
As mentioned above, Sewing machines 1 according to present embodiment, even use under the situation of the mother metal 31 that constitutes by mild steel, low-carbon alloy steel and steel alloy, also can form the DLC layer by the DLC coating on the surface of this mother metal 31 at shank abut 30 as thin-wall member.Therefore, the hardness on the surface of shank abut 30 can be increased substantially, and the coefficient of friction on surface can be reduced significantly.Therefore, can increase substantially the lubricity of sliding surface.
Thus, even under the dry environment of not forcing fuel feeding, also can reach (guaranteeing) identical with the existing Sewing machines of forcing fuel feeding or on it, promptly can use the durability in 7 years at least.
In addition, by forming the DLC tunicle with said method, can under the situation of the dimensional accuracy of the steel that do not destroy the cure process that heats generation, form the DLC tunicle on the surface of these steel.
In addition, intermediate layer 33 is not limited to one deck, also can be two-layer or more than three layers.Promptly, in the present embodiment, though the intermediate layer 33 that is made of chromium has only one deck, for example shown in Figure 7, also can on porous layer 32b, form the intermediate layer 33 that constitutes by chromium, and the intermediate layer 34 that further formation is made of tungsten (W) on this intermediate layer 33 (W layer: 900HV～1000HV).Described intermediate layer 34 is also formed by the sputter application pattern.
At this moment, intermediate layer 34 is preferably by hardness (hardness zone) and is in the layer that the material between the hardness (hardness zone) of porous layer 32b and DLC layer 35 constitutes, and carries out stacked in the high more mode of past more upper strata hardness.So, by forming two-layer intermediate layer, between porous layer 32b and DLC layer 35, form the intermediate layer 33,34 that constitutes by two metal layers, thereby can form the dipping bed of the approaching metal of mutual hardness.Therefore, levels is warm good, can further improve the connecting airtight property of levels.That is, can maintain the DLC layer 35 of surperficial formation more chronically.Therefore, can improve the durability of Sewing machines 1.
In addition, as shown in Figure 8, can use WC/C (tungsten carbide/carbon) layer 36 to replace at the DLC layer 35 of surperficial formation.Under the situation that has formed this structure, because the hardness (hardness zone) of WC/C layer 36 is 1000HV～1500HV, so more approach hardness (hardness zone) 700HV～800HV in intermediate layer 33 than the hardness (hardness zone) of DLC layer 35, good with the connecting airtight property and the chemical stability in intermediate layer 33, warm good.Therefore, can form the high stable cured film of connecting airtight property.
In addition, in the present embodiment, enumerated the example of the slipper of shank 10 and shank abut 30 as sliding part, and the situation that forms nitride layer 32, intermediate layer 33 and DLC layer 35 on the surface of shank abut 30 is illustrated, be not limited to shank abut 30 but be suitable for part of the present invention.That is, can implement described cure process to the surface of shank 10, in addition, so long as the sliding contact surface of axle and bearing or interior rotating shuttle with outside the part of two relative sliding-contacts of member such as rotating shuttle can be suitable for.
Claims (7)
1. sewing machine component is the sewing machine component that wear-resistant processing has been implemented on the surface of the mother metal that constitutes at the steel by the cure process that heats generation, it is characterized in that,
Surface at described mother metal forms nitride film, this nitride film has the compacted zone that combines with this mother metal and is combined in porous layer on this compacted zone, and then on this nitride film, forming the high rigidity tunicle across the intermediate layer, the hardness zone in described intermediate layer is between the hardness zone of this nitride film and high rigidity tunicle.
2. sewing machine component according to claim 1 is characterized in that,
Described high rigidity tunicle is formed by the diamond like carbon carbon coating.
3. sewing machine component according to claim 2 is characterized in that,
Described diamond like carbon carbon coating is made of a kind of diamond like carbon carbon coating that contains metal.
4. sewing machine component according to claim 3 is characterized in that,
The metal that described diamond like carbon carbon coating contains is chromium or tungsten.
5. sewing machine component according to claim 1 is characterized in that,
Described high rigidity tunicle is formed by tungsten carbide/carbon coating.
6. according to claim 2 or 5 described sewing machine components, it is characterized in that,
Described intermediate layer is made of chromium or tungsten.
7. according to claim 2 or 5 described sewing machine components, it is characterized in that,
The described steel that heat the cure process of generation are that carburizing and quenching tempering or Q-tempering are handled mild steel, low-carbon alloy steel or the steel alloy that does not all carry out.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005368530 | 2005-12-21 | ||
| JP2005-368530 | 2005-12-21 | ||
| JP2005368530A JP2007167317A (en) | 2005-12-21 | 2005-12-21 | Sewing machine components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1986937A true CN1986937A (en) | 2007-06-27 |
| CN1986937B CN1986937B (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101684598A Active CN1986937B (en) | 2005-12-21 | 2006-12-13 | Sewing machine component |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2007167317A (en) |
| KR (1) | KR20070067622A (en) |
| CN (1) | CN1986937B (en) |
| TW (1) | TW200730689A (en) |
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| CN101634090B (en) * | 2008-10-21 | 2013-01-23 | 安乡凯斯机械零件有限公司 | Manufacture method of needle bar connecting rod on two-needle sewing machine |
| CN108411244A (en) * | 2018-04-19 | 2018-08-17 | 西安交通大学 | A method of improving M50NiL bearing steel Tribological Properties |
| CN113430485A (en) * | 2021-06-28 | 2021-09-24 | 哈尔滨工业大学 | Method for preparing antifriction self-lubricating composite layer based on plasma composite thermal diffusion |
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| JP4944706B2 (en) * | 2007-08-24 | 2012-06-06 | サンデン株式会社 | Swash plate compressor |
| JP5442102B2 (en) * | 2010-02-26 | 2014-03-12 | 株式会社日立製作所 | Scroll compressor |
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| CN1138020C (en) * | 1999-09-29 | 2004-02-11 | 永源科技股份有限公司 | Evaporation coating process with cathode arc for depositing diamond-like carbon film |
| JP2001113075A (en) * | 1999-10-18 | 2001-04-24 | Juki Corp | Sliding device for sewing machine, and sewing machine |
| JP2001152319A (en) * | 1999-11-25 | 2001-06-05 | Kohan Kogyo Kk | Surface treated metallic member having surface treatment layer excellent in adhesion, surface treatment method therefor, and rotary equipment member using the surface treatment method |
| JP2002188640A (en) * | 2000-12-21 | 2002-07-05 | Sankyo Seiki Mfg Co Ltd | Manufacturing method for dynamic pressure bearing device |
| JP4660002B2 (en) * | 2001-04-09 | 2011-03-30 | Ｊｕｋｉ株式会社 | Guide to the sewing machine |
| JP2003033591A (en) * | 2001-07-19 | 2003-02-04 | Juki Corp | Sliding part of sewing machine |
| JP2003111990A (en) * | 2001-10-09 | 2003-04-15 | Brother Ind Ltd | Sewing machine |
| JP2003301847A (en) * | 2002-04-05 | 2003-10-24 | Koyo Seiko Co Ltd | Bearing device |
| JP4438936B2 (en) * | 2003-12-10 | 2010-03-24 | ブラザー工業株式会社 | Manufacturing method of sliding parts |
-
2005
- 2005-12-21 JP JP2005368530A patent/JP2007167317A/en active Pending
-
2006
- 2006-11-28 TW TW095143933A patent/TW200730689A/en unknown
- 2006-12-13 CN CN2006101684598A patent/CN1986937B/en active Active
- 2006-12-19 KR KR1020060129846A patent/KR20070067622A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101634090B (en) * | 2008-10-21 | 2013-01-23 | 安乡凯斯机械零件有限公司 | Manufacture method of needle bar connecting rod on two-needle sewing machine |
| CN108411244A (en) * | 2018-04-19 | 2018-08-17 | 西安交通大学 | A method of improving M50NiL bearing steel Tribological Properties |
| CN108411244B (en) * | 2018-04-19 | 2020-06-19 | 西安交通大学 | Method for improving surface tribological performance of M50NiL bearing steel |
| CN113430485A (en) * | 2021-06-28 | 2021-09-24 | 哈尔滨工业大学 | Method for preparing antifriction self-lubricating composite layer based on plasma composite thermal diffusion |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200730689A (en) | 2007-08-16 |
| KR20070067622A (en) | 2007-06-28 |
| JP2007167317A (en) | 2007-07-05 |
| CN1986937B (en) | 2012-03-21 |
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