TWI257977B - Dynamic bearing manufacturing method - Google Patents

Dynamic bearing manufacturing method Download PDF

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Publication number
TWI257977B
TWI257977B TW094128354A TW94128354A TWI257977B TW I257977 B TWI257977 B TW I257977B TW 094128354 A TW094128354 A TW 094128354A TW 94128354 A TW94128354 A TW 94128354A TW I257977 B TWI257977 B TW I257977B
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TW
Taiwan
Prior art keywords
dynamic pressure
pressure bearing
manufacturing
plate
sleeve
Prior art date
Application number
TW094128354A
Other languages
Chinese (zh)
Other versions
TW200708670A (en
Inventor
Hsiu-Wei Wu
Wen-Shi Huang
Original Assignee
Delta Electronics Inc
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Publication date
Application filed by Delta Electronics Inc filed Critical Delta Electronics Inc
Priority to TW094128354A priority Critical patent/TWI257977B/en
Priority to US11/367,591 priority patent/US20070039186A1/en
Priority to JP2006186661A priority patent/JP2007051771A/en
Application granted granted Critical
Publication of TWI257977B publication Critical patent/TWI257977B/en
Publication of TW200708670A publication Critical patent/TW200708670A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/44—Shaping by deformation without removing material by rolling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49639—Fluid bearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49647—Plain bearing
    • Y10T29/49648—Self-adjusting or self-aligning, including ball and socket type, bearing and component making
    • Y10T29/49657—Socket making
    • Y10T29/49663—Socket making by assembling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Forging (AREA)

Abstract

A dynamic bearing manufacturing method includes the steps of preparing a sheet of a predetermined size; forming several pressure-generating grooves on a surface of the sheet; rolling up the sheet to complete the dynamic bearing; and finally combining the bearing with a bushing. The method of the present invention can simplify the manufacturing process and reduce the manufacturing cost.

Description

1257977 九、發明說明： 【發明所屬之技術領域】 本發明係關於-種動壓軸承製作方法，特別係關於一種先 形成動壓溝槽再捲曲製作出圓筒狀軸承之 【先前技術】 習知動㈣承通常係指在—軸承的内孔壁上具有微細之 ^槽’並且在該溝槽内具有潤滑油；當馬達之轉轴旋轉時，溝 槽内的潤滑油會受到牵引的力量而佈滿該轉轴，並建立起一動 昼，將該轉軸支财巾央位置，避免該㈣與軸承㈣產生磨 擦，如此可增加馬達的可靠度並減少噪音。 ，而’軸承内孔中的動壓溝槽加工相當因難，原因在於溝 ^之見度及深度非常小，其精度的掌握不易。雖然目前已有數 :力式的提出，例如刀具加工方式、滾軋加工方式、塑膠 射出方式、腐姓方式、組合方式、鑛層後加工方式等，但最後 的成品皆屬於高成本的型態，部份原因即在於這些加工* ^利用特殊的加工器具及技巧’而且均涉及各家廠商之商業ς 本發明針對上述高成本的動壓軸承製作方式之缺點，提出 作成:新的製作方法，可避免需特殊加工器具的使用，製 作成本也較低廉。以下為本發明之簡要說明。 【發明内容】 ^發明之主要目的係在於提供—種動壓軸承製作方法 小的軸承板材，然後在該板材上的-表面加： 一槽’再將該板材捲曲成圓筒狀’最後再安裝至 :板材捲曲成-般轴承形狀，製作方式較二簡單:本:: 承的=二=:材的尺寸大小係取決於所欲完成之轴 1257977 用 根據上述目的，該板材的材質只要可以捲曲成型皆可適 根據上述目的，該板材的材質若為金屬，係利用刀且 板材割出動壓溝槽或是利用機具衝壓出動壓溝槽。〃 *式該板材的材質若為塑“利用射出成型 根據上述目的，該捲曲後之軸承係直接置入於該套 一軸孔或是由數個可分離之套筒分離 ^ 該軸承並彼此組合而成。 f之外孩置 懂 下 為讓本發明之上述和其他目的、特徵、和優點能更明顯易 下文特舉一較佳實施例，並配合所附圖式，作詳細說明如 【實施方式】 本發明之動壓軸承製作方法係根據所欲 與孔徑大小而先準備-矩形板材⑴，如第1: 成型之材質皆可適用，常見的轴承材質為金屬銅。疋了场曲 篦二t在該板材上的一表面加工出複數條動壓溝槽(10)，如 第2圖所示’該動壓溝槽⑽之形狀 ，狀’本實施例係以魚骨形之動壓溝槽作說明。值 材⑽的材㈣為金屬，可利用刀具在該板材于⑴= 槽⑽或利用機具衝M出㈣溝槽⑽ 質 為塑膠，則可利用射出成型的方式形成該動壓溝槽⑽。才貝右 =將具該等動壓溝槽⑽之板材⑴捲曲成 :動壓轴承⑺之製作’如第3圖所示;其中該動壓軸承(2= =之内孔（20)係使-轉轴（圖中未繪示）穿過，並用以承接該轉 睛參閱第4圖，通常在實際使用該動 動壓轴承⑺再安裝至一套筒(3)内部;除了如第4圖)所示 1257977 • 動壓軸承（2)直接置入於該套筒内之一軸孔（30)外，亦可由數個 可分離之套筒分離部（4、4，)從該軸承（2)之外側夾置包覆該軸承 (2) ’且彼此組合而成一套筒，如第$圖所示。 本發明之特徵係先製作出具動壓溝槽之板材，再將該板材 捲曲所需之軸承形狀，如此可避免需特殊加工器具的使用，製 作成本也較低廉。因此，板材（1)之形狀並非只能如第1圖示之 矩形，只要該板材（1)能在捲曲過程兩首尾兩端互相配合銜接即 可，如第6圖所示；同樣的，該動壓溝槽（1〇)之形狀亦可為飛 鏢形（如第7圖所示）、人字形（如第8圖所示）、斜紋或直條 φ 、纹等’均可運用於本發明中。 以上所述僅為本發明之較佳實施例而已，上述實施例僅係 用來說明而非用以限定本發明之申請專利範圍，本發明之範疇 係由以下之申請專利範圍所界定。凡依本發明申請專利範圍所 作之均等變化與修飾，皆應屬本發明之涵蓋範圍。 【圖式簡單說明】 第1圖為本發明之動壓軸承板材之一實施例。 第2圖為在第丨圖之板材上加工出動壓溝槽之示意圖。 第3圖為將第2圖之板材捲曲成圓筒狀之示意圖。 • 第4圖為將第3圖所形成之動壓軸承置入一套筒示意圖。 第5圖為利用複數個可分離之套筒分離部將第3圖之動壓 軸承夾置於其内。 : 第6圖為本發明之動壓板材之另一實施例。 ' 第7圖為在第6圖之板材上加工出動壓溝槽之示意圖。 第8圖為人字形動壓溝槽示意圖。 1 :板材 2 :動壓軸承 3 :套筒 【主要元件符號說明】 1〇 :動壓溝槽 20 :内孔 30 :軸孔 1257977 4、4,：套筒分離部1257977 IX. Description of the Invention: [Technical Field] The present invention relates to a method for manufacturing a dynamic pressure bearing, and more particularly to a method for forming a cylindrical bearing by first forming a dynamic pressure groove and then crimping it. The moving (four) bearing usually means that there is a fine groove on the inner wall of the bearing and there is lubricating oil in the groove; when the rotating shaft of the motor rotates, the lubricating oil in the groove is subjected to the pulling force. The rotating shaft is covered and a moving cymbal is established, and the rotating shaft supports the central position of the financial napkin to avoid friction between the (4) and the bearing (4), thereby increasing the reliability of the motor and reducing noise. However, the machining of the dynamic pressure groove in the bearing bore is quite difficult because the visibility and depth of the groove are very small, and the accuracy of the control is not easy. Although there are several types of force proposals, such as tool processing methods, rolling processing methods, plastic injection methods, rot methods, combination methods, post-processing methods, etc., the final products are all high-cost types. Part of the reason is that these processes* use special processing tools and techniques' and both involve the commercials of various manufacturers. The present invention addresses the shortcomings of the above-mentioned high-cost dynamic pressure bearing manufacturing methods, and proposes a new production method. Avoid the need for special processing equipment, and the production cost is also low. The following is a brief description of the invention. SUMMARY OF THE INVENTION The main object of the invention is to provide a small bearing plate for the production of a dynamic pressure bearing, and then add a surface on the plate: a groove 'crack the plate into a cylindrical shape' and finally install To: the plate is curled into a general bearing shape, the production method is simpler: this:: bearing = two =: the size of the material depends on the axis to be completed 1257977. According to the above purpose, the material of the plate can be curled According to the above purpose, if the material of the plate is metal, the plate is used to cut the dynamic pressure groove or the dynamic pressure groove is punched out by the machine. 〃 * The material of the plate is plastic "by injection molding according to the above purpose, the crimped bearing is directly placed in the sleeve of a shaft hole or separated by a plurality of separable sleeves and combined with each other The above and other objects, features, and advantages of the present invention will become more apparent. The method for manufacturing the dynamic pressure bearing of the present invention is prepared according to the desired size and the aperture size. The rectangular plate (1) can be applied as the first: the material of the molding is applicable, and the common bearing material is metal copper. A plurality of dynamic pressure grooves (10) are formed on a surface of the plate, and as shown in FIG. 2, the shape of the dynamic pressure groove (10) is in the form of a fishbone-shaped dynamic pressure groove. For example, the material (4) of the value material (10) is a metal, and the tool can be used to form the dynamic pressure groove by means of injection molding in the (1) = groove (10) or by using the tool to punch out (4) the groove (10). (10).Beibei Right=The board with these dynamic pressure grooves (10) (1) crimping into: the production of dynamic pressure bearing (7) is as shown in Fig. 3; wherein the dynamic pressure bearing (2 = = inner hole (20) is passed through the shaft (not shown) and used Refer to Figure 4, usually in the actual use of the dynamic pressure bearing (7) and then installed inside a sleeve (3); except as shown in Figure 4) 1257977 • Dynamic bearing (2) placed directly in Outside the shaft hole (30) in the sleeve, a plurality of separable sleeve separating portions (4, 4) may be sandwiched from the outer side of the bearing (2) to cover the bearing (2)' and combined with each other A sleeve is formed as shown in Fig. 1. The feature of the present invention is that a plate having a dynamic pressure groove is first formed, and the shape of the bearing is required to be crimped, so that the use of a special processing tool can be avoided, and the manufacturing cost can be avoided. Therefore, the shape of the sheet (1) is not only rectangular as shown in Fig. 1, as long as the sheet (1) can be engaged with each other at both ends of the crimping process, as shown in Fig. 6; Similarly, the shape of the dynamic pressure groove (1〇) may also be a dart shape (as shown in FIG. 7), a herringbone shape (as shown in FIG. 8), and a diagonal shape. Or a straight line φ, embossing, etc. may be used in the present invention. The above description is only for the preferred embodiment of the present invention, and the above embodiments are only for the purpose of illustration and not for the purpose of limitation. The scope of the present invention is defined by the scope of the following claims. The equivalent variations and modifications of the scope of the present invention should be construed as the scope of the present invention. An example of a dynamic pressure bearing plate. Fig. 2 is a schematic view showing the dynamic pressure groove formed on the plate of the second drawing. Fig. 3 is a schematic view showing the plate of Fig. 2 curled into a cylindrical shape. The dynamic pressure bearing formed in Fig. 3 is placed in a sleeve schematic. Fig. 5 is a view showing the dynamic pressure bearing of Fig. 3 being sandwiched by a plurality of separable sleeve separating portions. : Fig. 6 is another embodiment of the dynamic pressure plate of the present invention. Figure 7 is a schematic view of the dynamic pressure groove processed on the sheet of Fig. 6. Figure 8 is a schematic view of a herringbone dynamic pressure groove. 1 : Plate 2 : Dynamic pressure bearing 3 : Sleeve [Main component symbol description ] 1 〇 : Dynamic pressure groove 20 : Inner hole 30 : Shaft hole 1257977 4, 4,: Sleeve separation part

Claims (1)

1257977 十、申請專利範圍： 1· 一種動壓軸承製作方法，其步驟包括·· 提供一板材； 在該板材之表面加工出複數條溝槽；以及 捲曲該板材成中空圓筒狀； 其中該複數條溝槽係位於該捲曲之板材 該第丨項所狀動料承製作方法，其中 該^如ΛΓ。㈣㈣2項料之㈣絲製作方法，其中 4·如申請專利範圍帛！項所述之動壓 該板材之材質為歸。 U料法，其中 材如專/1請帛1項料之動壓軸承製作方法，其中 Μ扳材之兩鈿係可互相配合銜接。 兮】：申請專利範圍帛1項所述之動壓軸承製作方法，直中 H形f係魚骨形、人字形、飛鏢形、斜紋或直條紋: 該等靜//利範圍第2項所述之動壓軸承製作方法，其中 及專溝槽係由刀具在該板材之該表面割出形成。 ，二蓋如二請專利範圍帛2項所述之動壓軸承製作方法，苴中 忒專溝槽係由機具衝壓形成。 /、τ 該H請專利範㈣4項所述之動壓軸承製作方法，其中 /等溝槽係由射出成型方式而形成。 在：二：請專利範圍第1項所述之動壓軸承製作方法，豆中 在，捲曲步驟後，係將該捲曲之板材安裝於_套筒内。” 該捲曲專利範圍第10項所述之動壓軸承製作方法，其中 板材係直接置入於該套筒之一軸孔内部。 “2二15利範圍第10項所述之動壓軸承製作方法，其中 貧两係由數個分離部所組成。 1 3·如申請專利範圍第12項所述之動壓軸承製作方法，其中 1257977 3數個刀離邛係彳疋该捲曲之板材外側包覆，並彼此組合成該套 筒。 14. 一種動壓軸承製作方法，其步驟包括： 提供一板材’該板材之相對端部係可互相配合銜接； 在該板材之表面加工出複數條溝槽；以及 連接該板材之該組相對端部而形成該動壓軸承。 > 15·、如申請專利範圍第14項所述之動壓軸承製作方法，其中 該動壓轴承具有一内孔，該複數條溝槽係位於該内孔壁上。1257977 X. Patent application scope: 1. A method for manufacturing a dynamic pressure bearing, the method comprising: providing a plate; processing a plurality of grooves on a surface of the plate; and crimping the plate into a hollow cylindrical shape; wherein the plurality The groove is located in the method of making the movable material of the crimped plate, wherein the material is like a crucible. (4) (4) Method for making (4) silk of 2 items, 4) If the scope of patent application is 帛! The dynamic pressure described in the item is based on the material. U material method, in which the material is as special / 1 please 帛 1 item of dynamic pressure bearing manufacturing method, in which the two 钿 之 之 可 可 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。兮]: Apply for the dynamic pressure bearing method described in the scope of patent 帛1, straight H-shaped f-shaped fishbone, herringbone, dart, twill or straight stripes: the second paragraph of the static / / profit range The method for manufacturing a dynamic pressure bearing, wherein the groove is formed by cutting a tool on the surface of the plate. The second cover is as follows. The method of making the dynamic pressure bearing described in the patent scope 帛 2 item is formed by stamping the machine. /, τ This H is a method for producing a dynamic pressure bearing according to the fourth aspect of the patent, wherein the /etc. groove is formed by injection molding. In the second method, the method for manufacturing the dynamic pressure bearing described in the first aspect of the patent, in the bean, after the crimping step, the crimped plate is installed in the sleeve. The method for manufacturing a dynamic pressure bearing according to the invention of claim 10, wherein the plate is directly placed inside a shaft hole of the sleeve. The method for manufacturing the dynamic pressure bearing according to Item 10 of the 2nd 15th, The poor two are composed of several separations. 1 . The method of manufacturing the dynamic pressure bearing according to claim 12, wherein 1257977 3 of the plurality of knives are coated on the outer side of the crimped plate and combined with each other to form the sleeve. 14. A method of manufacturing a dynamic pressure bearing, the method comprising: providing a sheet of 'the opposite ends of the sheet are engageable with each other; processing a plurality of grooves on the surface of the sheet; and connecting the opposite ends of the sheet The dynamic pressure bearing is formed. The dynamic pressure bearing manufacturing method according to claim 14, wherein the dynamic pressure bearing has an inner hole, and the plurality of grooves are located on the inner hole wall. 16·如申請專利範圍第14項所述之動壓軸承製作方法，其中 該板材之材質為金屬。 /、 Π·如申請專利範圍第16項所述之動壓軸承製作方法，1 該金屬係為銅。 八 18.如申請專利範圍第14項所述之動壓軸承製作方法，其中 該板材之材質為塑膠。 〃 ▲ 19.如申請專利範圍第14項所述之動壓軸承製作方法，其中 忒溝槽之形狀係魚骨形、人字形、飛鏢形、斜紋或直條紋。 士 /〇·如申請專利範圍第16項所述之動壓軸承製作方法，其中 。亥等溝槽係由刀具在該板材之該表面割出形成。 上*21.如申睛專利範圍第丨6項所述之動壓軸承製作方法，其中 该等溝槽係由機具衝壓形成。 其中 其中 其中 其中 其中 士 ^22.如申請專利範圍第“項所述之動壓軸承製作方法， 忒等溝槽係由射出成型方式而形成。 23.如申請專利範圍第14項所述之動壓軸承製作方法， δ亥連接步驟後，係將該動壓軸承安裝於一套筒内。 上24·如申請專利範圍第23項所述之動壓軸承製作方法， °亥軸承係直接置入於該套筒之一軸孔内部。 ^5.如申睛專利範圍第23項所述之動壓軸承製作方法， 该套筒係由數個分離部所組成。 26_如申請專利範圍第25項所述之動壓軸承製作方法， 1257977 該數個分離部係從該捲曲之板材外側包覆，並彼此組合成該套 筒。The method of manufacturing a dynamic pressure bearing according to claim 14, wherein the material of the plate is metal. /, Π · As in the method of manufacturing the dynamic pressure bearing described in claim 16, 1 the metal is copper. 8. The method of manufacturing a dynamic pressure bearing according to claim 14, wherein the material of the plate is plastic. ▲ ▲ 19. The method of manufacturing the dynamic pressure bearing according to claim 14, wherein the shape of the groove is a fishbone shape, a herringbone shape, a dart shape, a twill pattern or a straight stripe shape. / / · The method of making dynamic pressure bearing as described in claim 16 of the patent application, wherein. A groove such as a hai is formed by cutting a tool on the surface of the plate. The method of manufacturing a dynamic pressure bearing according to the sixth aspect of the invention, wherein the grooves are formed by punching of the implement. Among them, among them, the insider ^22. The method for manufacturing the dynamic pressure bearing described in the "Scope of Application", the groove is formed by injection molding. 23. The motion as described in claim 14 The method of manufacturing the pressure bearing, after the δhai connection step, is to install the dynamic pressure bearing in a sleeve. The above-mentioned method of manufacturing the dynamic pressure bearing described in claim 23, the The inside of the shaft hole of the sleeve. ^5. The method for manufacturing a dynamic pressure bearing according to claim 23, wherein the sleeve is composed of a plurality of separating portions. 26_If the patent application is the 25th item In the method for manufacturing the dynamic pressure bearing, 1257977, the plurality of separation portions are coated from the outer side of the curled plate and combined with each other to form the sleeve. 1111
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TW094128354A TWI257977B (en) 2005-08-19 2005-08-19 Dynamic bearing manufacturing method
US11/367,591 US20070039186A1 (en) 2005-08-19 2006-03-06 Dynamic bearing manufacturing method
JP2006186661A JP2007051771A (en) 2005-08-19 2006-07-06 Method of manufacturing dynamic pressure bearing

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JP2963652B2 (en) * 1995-02-07 1999-10-18 株式会社椿本チエイン Rolled product for chain and manufacturing method
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