CN1120127A - Scroll compressor and method of processing scroll member - Google Patents
Scroll compressor and method of processing scroll member Download PDFInfo
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- CN1120127A CN1120127A CN 95103261 CN95103261A CN1120127A CN 1120127 A CN1120127 A CN 1120127A CN 95103261 CN95103261 CN 95103261 CN 95103261 A CN95103261 A CN 95103261A CN 1120127 A CN1120127 A CN 1120127A
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- scrollwork
- scroll member
- scroll
- revolution
- passage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0253—Details concerning the base
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention provides a processing method of a vortex element, comprising a static vortex element and a revolution vortex element. Each element is provided with a turbine housing shaped scroll which is formed on an end plate; the scrolls of the two vortex elements are engaged with each other to form a pump chamber. The side surface and the top surface of each scroll and the bottom surface of each passage of the vortex element are formed by the milling of an end mill. A grinding wheel or a super finishing machining grinding wheel is adopted for the fine lapping or super finishing machining of the bottom surface of the passage of the static vortex element, the top surface of the revolution vortex element scroll, the top surface of the static vortex element scroll and the end plate surface of the revolution vortex element or at least one matching part of all the matching parts which are close to each other and are opposite to the two vortex elements.
Description
The present invention relates to a kind of scroll compressor that is used for air conditioner, this compressor can reduce the surface friction drag of slide member, strengthens its runnability thus.The invention still further relates to a kind of processing method that is fit to the scroll member of this purpose.
Traditional scroll compressor, usually as, the disclosed structure of open special permission communique No.1-187388 of Japanese unexamined.Have so-called high-pressure bottle formula structure, in this high-pressure bottle formula structure, temporarily be stored in the so-called seal casinghousing from the pump pressure gas that mechanical part discharges that contracts.This traditional scroll compressor hereinafter will be in conjunction with the accompanying drawings 5-8 make description, there is shown the local structure for amplifying of its pump part.
Fig. 5 is the profile diagram of this traditional scroll compressor pump part, Fig. 6 represents to process the side cutaway view of the static or fixed scroll element approach of tradition, Fig. 7 represents to process the side cutaway view of traditional revolution scroll member method, and Fig. 8 is the schematic representation that shows traditional situation that matches through the End Milling Process surface.
In Fig. 5-8, sequence number 11 expressions one stationary scroll element, sequence number 11a is a scrollwork, 11b is the top end surface of expression scrollwork 11a, and sequence number 11c represents top board, and sequence number 11d represents the bottom surface of a passage, sequence number 11e is a suction port, sequence number 11f is an exhaust port, and sequence number 11g is an end surfaces, sequence number 12 expression revolution scroll members, sequence number 12a is a scrollwork, sequence number 12b represents the top end surface of scrollwork, and sequence number 12c is an end utmost point, and sequence number 12d is a bearing, sequence number 12e represents keyway, sequence number 13 expression bearing supports, 13a represents bearing, 13b represents an end surfaces, 13c represents a keyway, sequence number 14 expression partition rings, sequence number 14a represents a boss, sequence number 15 expressions one bent axle, sequence number 15a is an eccentric part, sequence number 16 is bolts, and sequence number 17 is seal casinghousings, and sequence number 18 expression end mills.
Bent axle 15 is installed among the bearing part 13a on the bearing support 13.Bent axle 15 and revolution scroll member 12 interconnect, so that the eccentric part 15a on the bent axle 15 is properly mounted among the bearing 12d, bearing 12d is arranged on the one side or a side of the revolution scroll member 12 that deviates from scrollwork 12a.Partition ring 14 is installed between bearing support 13 and the revolution scroll member 12, boss 14a is between the upper and lower surface of hollow discoid body of partition ring, and distinguish vertical extent vertically, so just boss 14a has been contained in respectively among the keyway 12e and the keyway 13c on the bearing support 13 of revolution scroll member 12.According to this arrangement, by eccentric part 15a, rotatablely moving of bent axle 15 is sent on the revolution scroll member 12, and rotatablely moving of bent axle 15 converted to the motion of revolution scroll member.
According to aforesaid way, allow stationary scroll element 11 and revolution scroll member 12 be meshing with each other, the side surface of scrollwork 11a and 12a is arranged to mutually near closely contacting, it forms very little gap each other, passage bottom surface 11d on the stationary scroll element 11 is near closely contacting mutually with the wrap tip surface 12b of revolution on the scroll member 12, form very little gap therebetween, and the surface of the wrap tip of the stationary scroll element 11 surface 11b and the end plate 12c of revolution scroll member 12 also is near closely contacting mutually, forms very little hole therebetween.The end surfaces 11g of stationary scroll element 11 abuts against on the end surfaces 13b of bearing support 13, and stationary scroll element 11 and bearing support 13 tighten together by bolt 16.Like this, just, finished the installation of pump part.
In the scroll compressor of installing in this way, when being arranged on compressor and rotating than the motor (not shown) of lower part, by the suction port 11e that on the part of stationary scroll element 11, forms, in the gas suction pump, and be directed into exhaust port 11f, this exhaust port 11f is arranged on the middle body of the top board 11c of stationary scroll element 11, and when continuing compression, gas just is discharged in the closed shell 17.
The problem that this scroll compressor exists is, pressurized gas are discharged in the closed shell 17, use load as and be applied on the top board 11c, the most surfaces zone that makes the top board 11c of stationary scroll element 11 is subjected to this effect and bends towards the direction of revolution scroll member 12, as shown in phantom in Figure 5.The result, in operation, middle body at vortex, be positioned at the bottom surface 11d of the passage on the stationary scroll element 11 and the wrap tip surface 12b of revolution scroll member 12 and produce mutual sliding contact, or the top end surface 11b of the scrollwork of stationary scroll element 11 and the end sheet surface 12c of revolution on the scroll member 12 produce mutual sliding contact, or above-mentioned two kinds of sliding contacts take place simultaneously.
Fig. 6 and Fig. 7 illustrate traditional vortex mould-forming method.Fig. 6 is an example of the method for production stationary scroll element 11, and Fig. 7 is an example of the method for production revolution scroll member 12.
Or rather, in stationary scroll element 11 as shown in Figure 6, the bottom surface 11d of the side surface of scrollwork 11a and passage is milled into end mill, subsequently, end mill 18 is moved the top end surface 11b of milling scrollwork, and continuous end face 11g along the diagram direction of arrow.In revolution scroll member 12 as shown in Figure 7, the side surface of its scrollwork 12a and the surface of end plate 12c are milled out by end mill 18.Then, end mill 18 moves along the diagram direction of arrow and mills out wrap tip surface 12b.
In the processing method of this scroll member, at present, produce or process by end mill, since form scroll shape and control scrollwork height dimension ability or because, under a kind of chuck clamping situation, it is the most effective keeping its accurate dimension by numerical control machine tool, and, relative rough surface precision and condition can both be produced or be processed into to each relevant portion of scroll member, or surface roughness is roughly greater than 4 μ m.
Fig. 8 is shown schematically in because as shown in Figure 5 under the situation of the top board 11c bending of stationary scroll element 11, an example of the stationary scroll element 11 of vortex mechanism middle body and the contact situation of revolution scroll member 12 between finished surface.Or rather, intermesh or interlock in the needle-like cutting surface part of two scroll members 12 and 11 milling, and the result becomes the power consumption that increases greatly in the operation because of friction, and owing to surface abrasion takes place in the damage of needle-like host material.
In traditional scroll compressor, because the surface accuracy that the end mill cutting brings is lower, the middle body of scrollwork is influenced by sliding contact, therefore, frictional resistance strengthens, and brings the energy consumption in the running to increase, the operational reliability of machine can not be satisfactory etc. problem.Though wish between sliding contacting part divides, to keep forming discontiguous microgap,, from the variation of the scroll member strength of materials of forming pump and the viewpoint of irregular size, it is difficult avoiding the contact of the top end surface of scrollwork fully.Therefore, be necessary to strengthen surface accuracy and the state of sliding contacting part phase-splitting, promptly reduce surface roughness, avoid the minimizing of friction factor thus, and prevent the original place destruction of substrate material the surface.
The objective of the invention is, solve the problems referred to above in related domain, a kind of processing method of scroll member is provided, it can improve the apparent surface's of the mutual sliding contact part of scroll member surface accuracy and surface condition, the resistance of reducing friction.
Another object of the present invention is, a kind of scroll compressor is provided, and it can improve surface accuracy and the surface condition of scroll member sliding contacting part phase-splitting to the surface.Reduce surface friction drag thus, and then reduce the power consumption in operation, it can also improve operation conditions provides high efficiency, thereby reaches high reliability.
According to the present invention, a kind of scroll compressor is provided, this compressor comprises the motor that is contained in the closed shell, can be connected drivingly with motor and the interior pump part of closed shell of packing into, this pump partly comprises, a stationary scroll element and a revolution scroll member, each scroll member all has the scrollwork of a volute shape that forms on its end plate, at the passage that forms between the scrollwork circle on the scroll shape, the scrollwork of described two scroll members is meshing with each other and forms a pump chamber, wherein in the bottom of above-mentioned stationary scroll element passage, top at aforementioned revolution scroll member scrollwork, on the top of described stationary scroll element scrollwork with on described revolution scroll member end plate, or at least one mating part of each mating part of very nearly two scroll members of described mutual relative distance, form an abradant surface or a superfinish surface.
According to the present invention, on the other hand, provide a kind of processing method of scroll member, this scroll member comprises, a stationary scroll element and a revolution scroll member, the scrollwork that has the scroll shape that on end plate, forms on each scroll member, the passage of formation one vortex crustiform between the scrollwork circle.The scrollwork of described two scroll members is meshing with each other and forms a pump chamber, and wherein, with the side of each scrollwork of end mill milling and the bottom of tip portion and each groove, its method may further comprise the steps:
To the top of the top of the bottom of described stationary scroll element passage, described revolution scroll member scrollwork, described stationary scroll element scrollwork and the end plate of described revolution scroll member, or, to described mutually relatively and very near two scroll members of distance at least one mating part of mating part separately, grind or superfinish.
Or rather, the processing of described stationary scroll element is, side surface and this bottom surface with end mill milling stationary scroll element scrollwork at the scroll member passage, then, with the top end surface of the described scrollwork of this end mill milling and with the end surfaces of the excircle part of the continuous scroll member of described top end surface.Under identical milling clamping condition, to the bottom surface of the passage that forms between adjacent volute circle, with emery wheel or superfinish abrasion wheel grinding.Move described emery wheel then, wrap tip surface and described scroll member excircle end surfaces are partly ground.
Processing revolution scroll member, with the side surface of the described revolution scroll member of end mill milling scrollwork and the surface of this scroll member end plate, then, with the top end surface of the described scrollwork of this end mill milling.The surface of described end plate is again with emery wheel or superfinish abrasion wheel grinding.Move described emery wheel then, grind the top end surface of described scrollwork.
By the way, for achieving the above object, be necessary to strengthen the surface condition and the surface accuracy on the wrap tip surface of passage bottom surface and stationary scroll element, similarly, also be necessary to improve the surface accuracy and the surface condition of the top end surface of end sheet surface and revolution scroll member scrollwork.
In other words,, just improved surface accuracy or surface condition thus, reached energy saving, improved the purpose of reliability by to above-mentioned all sliding partss or badly at least a slide relative surface is ground or superfinish.
Above-mentioned processing method influence is as follows:
In Fig. 6 and the described traditional scroll member processing method of Fig. 7, each is static and revolve round the sun scroll member all under a kind of chuck clamping condition, by described end mill shaping or processing.On the other hand, according to the present invention, except above-mentioned steps with end mill, same clamping condition, when keeping required size, grind or superfinish, bottom surface and sliding volume top end surface, the end sheet surface of revolution scroll member and the surface accuracy (surface roughness) on wrap tip surface of all passages of described stationary scroll element have been improved thus, or at least one this apparent surface's surface accuracy, so, save institute's energy requirement, reached the purpose that improves reliability simultaneously.
Below in conjunction with accompanying drawing,, most preferred embodiment of the present invention will be better understood aforementioned or other purpose of the present invention, feature and advantage by being described.Wherein:
Fig. 1 is the partial side, cross-sectional view of expression according to the processing method of the stationary scroll element of one embodiment of the invention;
Fig. 2 is the partial side, cross-sectional view of expression according to the processing method of the revolution scroll member of the embodiment of the invention;
Fig. 3 A and 3B are expressions according to the cooperatively interact schematic representation of the example under the condition of one or two slidingsurface through grinding of the present invention;
Fig. 4 A and 4B be expression according to the present invention one or two through superlinishing, the cooperatively interact schematic representation of the example under the condition of slidingsurface;
Fig. 5 is the partial longitudinal section figure of traditional scroll compressor pump part.
Fig. 6 is that the partial side of the traditional stationary scroll element processing method of expression is shown sectional drawing;
Fig. 7 is that the partial side of expression tradition revolution scroll member processing method is shown sectional drawing;
Fig. 8 is the cooperatively interact schematic representation of an example under the condition of the finished surface of conventional end mill.
Below with reference to Fig. 1 and Fig. 4 a most preferred embodiment of the present invention is made description.
Fig. 1 is the partial side, cross-sectional view according to the processing method embodiment of stationary scroll element provided by the invention, Fig. 2 is the partial side, cross-sectional view according to revolution scroll member processing method embodiment provided by the invention, Fig. 3 A and 3B are according to the cooperatively interact schematic representation of situation example of one or two slidingsurface through grinding of the present invention, Fig. 4 A and 4B be according to of the present invention one or two through the cooperatively interact schematic representation of situation example of superlinishing slidingsurface.
The vortex processing method of scroll compressor of the present invention, the structure of its compressor structure with shown in Figure 5 generally speaking are identical, thereby description this paper of its structure and running is omitted.Distinguish as depicted in figs. 1 and 2 and process processing method static and the revolution scroll member.
In Fig. 1 and Fig. 2, sequence number 1 expression stationary scroll element, sequence number 1a is a scrollwork, sequence number 1b represents the top end surface of scrollwork, sequence number 1c is a top board, sequence number 1d represents the bottom surface of passage, and sequence number 1e is an end surfaces, sequence number 2 expression revolution scroll members, sequence number 2a is a scrollwork, sequence number 2b is the top end surface of scrollwork, and sequence number 2c represents an end plate, and sequence number 3 expression one emery wheel or superfinish emery wheels.
When processing or producing stationary scroll element 1 shown in Figure 1, utilize the side surface of conventional end mill milling scrollwork 1a as shown in Figure 6, promptly form the bottom surface 1d of volute and the described passage of milling, subsequently, milling wrap tip surface 1b and with the continuous excircle end portion end face 1e of this wrap tip surface 1b, these steps are implemented under with same clamping condition.Afterwards, this workpiece (that is, the stationary scroll element 1 in the course of working) will remain under this clamp position, utilize emery wheel or superfinish emery wheel to process in the following manner:
(1) the bottom surface 1d to described passage carries out fine lapping or superfinish abrasive machining, and then, emery wheel 3 moves in direction shown in the arrow of numerical control lower edge; With
(2) subsequently, according to their mutual size, described wrap tip surface 1b and end surfaces 1e are carried out effective fine lapping or superfinish.
Similarly, when as shown in Figure 2 revolution scroll member 2 of processing, the end mill that utilizes conventional art as shown in Figure 7 to adopt, the side surface of the described scrollwork 2a of milling and the surface of end plate 2c, then the top end surface 2b of milling scrollwork.These steps are finished under same clamping condition.Then, this workpiece (that is, the revolution scroll member 2 in the course of working) under the above-mentioned clamping condition of maintenance, is processed in the following manner with described emery wheel or superfinish emery wheel 3;
(1) fine lapping and superfinish are carried out in the surface of described end plate 2c, then, the direction of arrow moves emery wheel 3 in the numerical control lower edge;
(2) then, according to its size that is associated, surface 2b carries out effective fine lapping or superfinish to described wrap tip.
As a result, with traditional only comparing with the surface of end mill processing, accurately machined surface accuracy of aforesaid way or surface condition, promptly surface roughness is greatly improved.
Owing to prepared above-mentioned machining tool, or even, no matter the stationary scroll element 1 or the scroll member 2 that revolves round the sun are processed with above-mentioned processing method, compare with conventional art, can both reduce friction factor largely, its reason is that the surface accuracy on one of slide relative surface of above-mentioned two scroll members is improved.
Stationary scroll element 1 and revolution scroll member 2 according to said process processing of the present invention in use, can obtain the condition that the contact surface shown in Fig. 3 A, 3B, 4A and 4B cooperates.
Fig. 3 A schematically illustrates, static and a example that revolution scroll member 1 and 2 boths cooperatively interact through the sliding contact surface of smooth grinding.
Or rather, owing to, improved surperficial roughness, improved the surface accuracy and the surface condition of acicular surface by grinding.That is to say that with traditional only comparing with the surface of end mill processing, roughness attenuates, and makes the engagement of described sliding contact surface or interlock be reduced to reduced levels.
Fig. 3 B schematically illustrates combining of described static and revolution scroll member 1 and 2 slidingsurface, and one of them slidingsurface has passed through fine lapping processing, and another surface then has been to use the surface of the end mill processing of conventional art.
Even in this case, because the surface accuracy on the surface of process abrasive machining and the effect of surface condition also can reduce the engagement or the interlock of slidingsurface effectively.
Fig. 4 A schematically shows the slidingsurface of described scroll member 1 and 2, and the two all passes through superfinish, has reached the example that cooperatively interacts after the surface accuracy preferably.
Or rather, through superfinish, its surface characteristics is to no longer include needle-like on it or the aciculiform bump exists, and therefore, will can not take place such as the interlock at the needle-like bump of end mill finished surface and lapped face.
The situation that the schematically illustrated described slidingsurfaces static and revolution scroll member 1 and 2 of Fig. 4 B mutually combine.One of them slidingsurface is through superfinish, and another is then processed through end mill.
Even this situation is equally also owing to through the surface accuracy on superlinishing surface and the effect of surface condition, can reduce the engagement or the interlock of slidingsurface effectively.
According to embodiment and since with traditional relatively poor acicular surface that only is processed to form with end mill in conjunction with comparing, can obtain the combination of the slidingsurface of the surface accuracy of the fewer jog of formed tool and surface condition.So described friction ractor can greatly reduce, and damage being avoided of bringing, be not worn harmful adverse effect of material powder with the reliability that causes compressor than galling with substrate material by the surface of conventional end mill processing.
As a result, form described pump part, can obtain very high mechanical movement efficient, but also realize the high reliability of described scroll compressor because of the static and revolution scroll member that above-mentioned scroll member processes.When the room air conditioner running of this kind compressor is housed, can reduce power consumption to refrigerator or air conditioner widely, therefore realize the saving electric energy, and can realize purpose safe and reliable under the high efficiency operating condition.
According to describing in detail more than the present invention, improve the surface accuracy and the surface condition of scroll member slide relative contact surface part, reduced frictional resistance thus, and reduced the power consumption in the running thus, simultaneously can reach high efficiency again, thereby improve the reliability of scroll compressor.
Claims (4)
1. scroll compressor, comprise a closed shell, the pump of motor and the binding that is connected with motor driving is partly packed in the described closed shell, described pump partly comprises, an one stationary scroll element and a revolution scroll member, the scrollwork that forms vortex crustiform on the plate is at one end arranged on each scroll member, between the circle of described scrollwork, form a vortex crustiform passage, the scrollwork of described two scroll members is meshing with each other, between the two, form pump chamber, it is characterized in that, in the bottom of described stationary scroll element passage, top at described revolution scroll member scrollwork, in described stationary scroll element wrap tip with on the end plate on the described revolution scroll member, or on described static and at least one each mating part apart from very near separately mating part relative, be formed with a lapped face and a finish surface with the revolution scroll member.
2. the processing method of a scroll member, described scroll member comprises a stationary scroll element and a revolution scroll member, the scrollwork that forms on the plate at one end of one vortex crustiform is arranged on each scroll member, between the circle of described scrollwork, form the passage of a vortex crustiform, the scrollwork of described two scroll members is meshing with each other and forms a pump chamber, wherein, and the top end surface of the side of each described volute scrollwork, and the bottom surface of each described passage is by an end mill milling, and the step of described method comprises:
To the bottom surface of described stationary scroll element passage, the top end surface of described revolution scroll member scrollwork, the surface of the top end surface of described stationary scroll element scrollwork and described revolution scroll member end plate or at least one each mating part of the relative of two elements and each mating part that spacing is very little carried out fine lapping or superfinish.
3. the processing method of a scroll member may further comprise the steps:
With the side of end mill milling stationary scroll element scrollwork and the lower surface of this scroll member passage, then, with the scroll member excircle that top end surface reaches and this top end surface the is continuous end surfaces partly of the described scrollwork of this end mill milling;
With milling with same method of clamping under, utilize the bottom surface of formed passage between emery wheel or the described scrollwork circle of super finishing I emery wheel fine lapping; And
Mobile emery wheel grinds the top end surface of described scrollwork and the end face of scroll member excircle part.
4. the processing method of a scroll member, its step comprises:
With the side of end mill milling revolution scroll member scrollwork and the surface of this scroll member end plate, use the top end surface of this this scrollwork of end mill milling then;
Surface with emery wheel or the described end plate of superfinish abrasion wheel grinding; And move described emery wheel, grind the top end surface of this scrollwork.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30734/1994 | 1994-03-01 | ||
| JP30734/94 | 1994-03-01 | ||
| JP3073494A JP3190197B2 (en) | 1994-03-01 | 1994-03-01 | Scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1120127A true CN1120127A (en) | 1996-04-10 |
| CN1061130C CN1061130C (en) | 2001-01-24 |
Family
ID=12311907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95103261A Expired - Lifetime CN1061130C (en) | 1994-03-01 | 1995-03-01 | Scroll compressor and method of processing scroll member |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3190197B2 (en) |
| CN (1) | CN1061130C (en) |
| TW (1) | TW306960B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121427A (en) * | 2017-04-17 | 2019-01-01 | 株式会社R&S | Screw compressor and its manufacturing method |
| CN113543930A (en) * | 2019-03-13 | 2021-10-22 | 三菱电机株式会社 | Scroll machining device and machining method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4017293B2 (en) * | 1999-07-21 | 2007-12-05 | 松下電器産業株式会社 | Manufacturing method of scroll compressor |
| CN104128645B (en) * | 2013-11-13 | 2016-11-02 | 柳州易舟汽车空调有限公司 | The processing method of orbiter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032322B2 (en) * | 1984-05-28 | 1985-07-27 | 松下電器産業株式会社 | High voltage variable resistor |
| SU1635896A3 (en) * | 1989-03-23 | 1991-03-15 | К.П.Зыбин, С.Н.Максимовский и Г.А.Радуцкий | Jet printing head and method of making same |
| CN1064639A (en) * | 1991-03-13 | 1992-09-23 | 福建省建瓯齿轮厂职工技协服务站 | Lapping device for scroll |
| JPH1187388A (en) * | 1997-09-04 | 1999-03-30 | Tanaka Denshi Kogyo Kk | Method for forming bump |
-
1994
- 1994-03-01 JP JP3073494A patent/JP3190197B2/en not_active Expired - Lifetime
-
1995
- 1995-02-21 TW TW84101582A patent/TW306960B/zh not_active IP Right Cessation
- 1995-03-01 CN CN95103261A patent/CN1061130C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121427A (en) * | 2017-04-17 | 2019-01-01 | 株式会社R&S | Screw compressor and its manufacturing method |
| CN113543930A (en) * | 2019-03-13 | 2021-10-22 | 三菱电机株式会社 | Scroll machining device and machining method |
| CN113543930B (en) * | 2019-03-13 | 2023-09-29 | 三菱电机株式会社 | Scroll machining device and machining method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07243387A (en) | 1995-09-19 |
| JP3190197B2 (en) | 2001-07-23 |
| CN1061130C (en) | 2001-01-24 |
| TW306960B (en) | 1997-06-01 |
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Expiration termination date: 20150301 Granted publication date: 20010124 |