US20030200783A1 - Hollow tubular blank provided in wall thereof with one or more reinforcing ribs - Google Patents
Hollow tubular blank provided in wall thereof with one or more reinforcing ribsDownload PDFInfo
- Publication number
- US20030200783A1 US20030200783A1US10/132,475US13247502AUS2003200783A1US 20030200783 A1US20030200783 A1US 20030200783A1US 13247502 AUS13247502 AUS 13247502AUS 2003200783 A1US2003200783 A1US 2003200783A1
- Authority
- US
- United States
- Prior art keywords
- wall
- reinforcing ribs
- tubular blank
- valve ball
- blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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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
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/08—Making hollow objects characterised by the structure of the objects ball-shaped objects
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/02—Making machine elements balls, rolls, or rollers, e.g. for bearings
Definitions
- the present inventionrelates generally to a hollow tubular blank, and more particularly to a valve ball blank provided with one or more reinforcing ribs.
- a hollow stainless steel or copper tube 1 of a specificationis used as a blank to make a valve ball 3 by a molding tool 2 such that the tube 1 is formed into the valve ball 3 with two holes 31 by two die blocks 22 , each having two die slots 21 .
- the die slots 21are provided with an arcuate wall 211 .
- the valve ball 3is provided with a retaining slot 32 by die forging. The retaining slot 32 is used to retain a valve rod.
- Such a prior art tubular blank 1 as described aboveis defective in design in that the tubular blank 1 is not provided in the wall with a reinforcing structure which serves to increase the structural strength of the retaining slot 32 of the valve ball 3 . As a result, the retaining slot 32 is susceptible to damage.
- the primary objective of the present inventionis to provide a metal tubular blank with one or more reinforcing ribs which are formed in a predetermined position of the wall of the metal tubular blank so as to facilitate the forming of a retaining slot.
- the retaining slotis formed by die forging in the reinforced portion of the wall of the tubular blank, thereby resulting in an increase in wall thickness of the retaining slot.
- FIG. 1shows a schematic process flow of a prior art valve ball.
- FIG. 2shows a schematic process flow of a valve ball blank of the present invention.
- FIG. 3shows a schematic process flow of a valve ball of the present invention.
- a hollow metal tube 4 of a specificationis formed into a valve ball blank 6 by die forging a dieing machine 5 is used to form the valve ball blank 6 .
- the dieing machine 5has an upper mold 51 , a lower mold 52 , an upper die block 53 , and. A lower die block 54 .
- the hollow metal tube 4is disposed between the upper mold 51 and the lower mold 52 .
- each of the two reinforcing ribs 61has an inner ridge 611 and an outer ridge 612 .
- the valve ball blank 6 of the present inventionis provided with two reinforcing ribs 61 , as shown in FIG. 2.
- the reinforcing ribs 61 of the valve ball blank 6can be located at any desired location by adjusting the position of the arcuate recesses 55 of the dieing machine 5 .
- the valve ball blank 6 of the present inventionis arranged between an upper mold 71 and a lower mold 72 of a forging machine 7 .
- the upper mold 71is provided with an arcuate slot 711 while the lower mold 72 is provided with an arcuate slot 721 .
- the outer ridges 612 of the valve ball blank 6are forced to deform by the arcuate surfaces of the arcuate slots 711 and 721 , thereby resulting in an increase in thickness of the inner ridges 611 .
- a valve ball 8is formed such that the valve ball 8 is provided with two reinforcing ribs 81 , and a retaining slot 82 which is corresponding in location to one of the two reinforcing ribs 81 .
- the reinforcing rib 81gives an added strength to the structure of the retaining slot 82 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
Description
- The present invention relates generally to a hollow tubular blank, and more particularly to a valve ball blank provided with one or more reinforcing ribs.[0001]
- As shown in FIG. 1, a hollow stainless steel or copper tube[0002]1 of a specification is used as a blank to make a
valve ball 3 by amolding tool 2 such that the tube1 is formed into thevalve ball 3 with twoholes 31 by twodie blocks 22, each having twodie slots 21. The dieslots 21 are provided with anarcuate wall 211. Thevalve ball 3 is provided with aretaining slot 32 by die forging. Theretaining slot 32 is used to retain a valve rod. - Such a prior art tubular blank[0003]1 as described above is defective in design in that the tubular blank1 is not provided in the wall with a reinforcing structure which serves to increase the structural strength of the
retaining slot 32 of thevalve ball 3. As a result, theretaining slot 32 is susceptible to damage. - The primary objective of the present invention is to provide a metal tubular blank with one or more reinforcing ribs which are formed in a predetermined position of the wall of the metal tubular blank so as to facilitate the forming of a retaining slot. In other words, the retaining slot is formed by die forging in the reinforced portion of the wall of the tubular blank, thereby resulting in an increase in wall thickness of the retaining slot.[0004]
- The features and the advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of the present invention with reference to the accompanying drawings.[0005]
- FIG. 1 shows a schematic process flow of a prior art valve ball.[0006]
- FIG. 2 shows a schematic process flow of a valve ball blank of the present invention.[0007]
- FIG. 3 shows a schematic process flow of a valve ball of the present invention.[0008]
- As shown in FIG. 2, a[0009]
hollow metal tube 4 of a specification is formed into a valve ball blank6 by die forging adieing machine 5 is used to form the valve ball blank6. Thedieing machine 5 has anupper mold 51, alower mold 52, anupper die block 53, and. A lower dieblock 54. When the upper and thelower molds lower die blocks arcuate recesses 55 are formed. Thehollow metal tube 4 is disposed between theupper mold 51 and thelower mold 52. When theupper mold 51 is at work, both ends of thehollow metal tube 4 are under great pressure such that the walls of the both ends of thehollow metal tube 4 are extruded toward thearcuate recesses 55, thereby resulting in formation of two reinforcingribs 61 opposite to each other. Each of the two reinforcingribs 61 has aninner ridge 611 and anouter ridge 612. - The valve ball blank[0010]6 of the present invention is provided with two reinforcing
ribs 61, as shown in FIG. 2. The reinforcingribs 61 of the valve ball blank6 can be located at any desired location by adjusting the position of thearcuate recesses 55 of thedieing machine 5. - As show in FIG. 3, the valve ball blank[0011]6 of the present invention is arranged between an
upper mold 71 and alower mold 72 of aforging machine 7. Theupper mold 71 is provided with anarcuate slot 711 while thelower mold 72 is provided with anarcuate slot 721. As the valve ball blank6 is pressed, theouter ridges 612 of the valve ball blank6 are forced to deform by the arcuate surfaces of thearcuate slots inner ridges 611. As a result, avalve ball 8 is formed such that thevalve ball 8 is provided with two reinforcingribs 81, and aretaining slot 82 which is corresponding in location to one of the two reinforcingribs 81. The reinforcingrib 81 gives an added strength to the structure of theretaining slot 82. - The present invention described above is to be regarded in all respects as being illustrative and nonrestrictive. Accordingly, the present invention may be embodied in other specific forms without deviating from the spirit thereof. The present invention is therefore to be limited only by the scopes of the following claims.[0012]
Claims (3)
1. A hollow tubular blank made of a metal and provided in a predetermined position of a wall thereof with a reinforcing rib.
2. The hollow tubular blank as defined inclaim 1 , wherein said reinforcing rib is formed by extrusion of the wall of one end of said metal tubular blank in a dieing machine whereby said reinforcing rib is formed of an inner ridge and an outer ridge.
3. The hollow tubular blank as defined inclaim 2 , wherein said reinforcing rib can be formed in any position of the wall of said metal tubular blank by a design change in the dieing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/132,475US20030200783A1 (en) | 2002-04-26 | 2002-04-26 | Hollow tubular blank provided in wall thereof with one or more reinforcing ribs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/132,475US20030200783A1 (en) | 2002-04-26 | 2002-04-26 | Hollow tubular blank provided in wall thereof with one or more reinforcing ribs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20030200783A1true US20030200783A1 (en) | 2003-10-30 |
Family
ID=29248780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/132,475AbandonedUS20030200783A1 (en) | 2002-04-26 | 2002-04-26 | Hollow tubular blank provided in wall thereof with one or more reinforcing ribs |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US20030200783A1 (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140274552A1 (en)* | 2013-03-14 | 2014-09-18 | Dana Limited | Cvt variator ball and method of construction thereof |
| ITBS20130148A1 (en)* | 2013-10-21 | 2015-04-22 | Rubinetterie Utensilerie Bonomi S R L | ASSEMBLY, PRECURSOR AND PROCEDURE FOR THE FORMATION OF CABLES |
| US9347532B2 (en) | 2012-01-19 | 2016-05-24 | Dana Limited | Tilting ball variator continuously variable transmission torque vectoring device |
| US9353842B2 (en) | 2012-09-07 | 2016-05-31 | Dana Limited | Ball type CVT with powersplit paths |
| US9404414B2 (en) | 2013-02-08 | 2016-08-02 | Dana Limited | Internal combustion engine coupled turbocharger with an infinitely variable transmission |
| US9416858B2 (en) | 2012-09-07 | 2016-08-16 | Dana Limited | Ball type continuously variable transmission/infinitely variable transmission |
| US9541179B2 (en) | 2012-02-15 | 2017-01-10 | Dana Limited | Transmission and driveline having a tilting ball variator continuously variable transmission |
| US9551404B2 (en) | 2013-03-14 | 2017-01-24 | Dana Limited | Continuously variable transmission and an infinitely variable transmission variator drive |
| US9556943B2 (en) | 2012-09-07 | 2017-01-31 | Dana Limited | IVT based on a ball-type CVP including powersplit paths |
| US9556941B2 (en) | 2012-09-06 | 2017-01-31 | Dana Limited | Transmission having a continuously or infinitely variable variator drive |
| US9599204B2 (en) | 2012-09-07 | 2017-03-21 | Dana Limited | Ball type CVT with output coupled powerpaths |
| US9638301B2 (en) | 2013-03-14 | 2017-05-02 | Dana Limited | Ball type continuously variable transmission |
| US9638296B2 (en) | 2012-09-07 | 2017-05-02 | Dana Limited | Ball type CVT including a direct drive mode |
| US9777815B2 (en) | 2013-06-06 | 2017-10-03 | Dana Limited | 3-mode front wheel drive and rear wheel drive continuously variable planetary transmission |
| US10030751B2 (en) | 2013-11-18 | 2018-07-24 | Dana Limited | Infinite variable transmission with planetary gear set |
| US10030748B2 (en) | 2012-11-17 | 2018-07-24 | Dana Limited | Continuously variable transmission |
| US10030594B2 (en) | 2015-09-18 | 2018-07-24 | Dana Limited | Abuse mode torque limiting control method for a ball-type continuously variable transmission |
| US10088022B2 (en) | 2013-11-18 | 2018-10-02 | Dana Limited | Torque peak detection and control mechanism for a CVP |
| CN109909428A (en)* | 2019-04-25 | 2019-06-21 | 常熟非凡新材股份有限公司 | The moving beam control mechanism of steel ball molding machine |
- 2002
- 2002-04-26USUS10/132,475patent/US20030200783A1/ennot_activeAbandoned
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9347532B2 (en) | 2012-01-19 | 2016-05-24 | Dana Limited | Tilting ball variator continuously variable transmission torque vectoring device |
| US9541179B2 (en) | 2012-02-15 | 2017-01-10 | Dana Limited | Transmission and driveline having a tilting ball variator continuously variable transmission |
| US9556941B2 (en) | 2012-09-06 | 2017-01-31 | Dana Limited | Transmission having a continuously or infinitely variable variator drive |
| US9416858B2 (en) | 2012-09-07 | 2016-08-16 | Dana Limited | Ball type continuously variable transmission/infinitely variable transmission |
| US9353842B2 (en) | 2012-09-07 | 2016-05-31 | Dana Limited | Ball type CVT with powersplit paths |
| US10006527B2 (en) | 2012-09-07 | 2018-06-26 | Dana Limited | Ball type continuously variable transmission/infinitely variable transmission |
| US9556943B2 (en) | 2012-09-07 | 2017-01-31 | Dana Limited | IVT based on a ball-type CVP including powersplit paths |
| US10088026B2 (en) | 2012-09-07 | 2018-10-02 | Dana Limited | Ball type CVT with output coupled powerpaths |
| US9599204B2 (en) | 2012-09-07 | 2017-03-21 | Dana Limited | Ball type CVT with output coupled powerpaths |
| US9689477B2 (en) | 2012-09-07 | 2017-06-27 | Dana Limited | Ball type continuously variable transmission/infinitely variable transmission |
| US9638296B2 (en) | 2012-09-07 | 2017-05-02 | Dana Limited | Ball type CVT including a direct drive mode |
| US10030748B2 (en) | 2012-11-17 | 2018-07-24 | Dana Limited | Continuously variable transmission |
| US9404414B2 (en) | 2013-02-08 | 2016-08-02 | Dana Limited | Internal combustion engine coupled turbocharger with an infinitely variable transmission |
| US9644530B2 (en) | 2013-02-08 | 2017-05-09 | Dana Limited | Internal combustion engine coupled turbocharger with an infinitely variable transmission |
| US9638301B2 (en) | 2013-03-14 | 2017-05-02 | Dana Limited | Ball type continuously variable transmission |
| US9689482B2 (en) | 2013-03-14 | 2017-06-27 | Dana Limited | Ball type continuously variable transmission |
| US20140274552A1 (en)* | 2013-03-14 | 2014-09-18 | Dana Limited | Cvt variator ball and method of construction thereof |
| US9933054B2 (en) | 2013-03-14 | 2018-04-03 | Dana Limited | Continuously variable transmission and an infinitely variable transmission variator drive |
| US9551404B2 (en) | 2013-03-14 | 2017-01-24 | Dana Limited | Continuously variable transmission and an infinitely variable transmission variator drive |
| US9777815B2 (en) | 2013-06-06 | 2017-10-03 | Dana Limited | 3-mode front wheel drive and rear wheel drive continuously variable planetary transmission |
| WO2015059601A1 (en)* | 2013-10-21 | 2015-04-30 | Rubinetterie Utensilerie Bonomi S.R.L. | Assembly, precursor and process for forming hollow bodies |
| ITBS20130148A1 (en)* | 2013-10-21 | 2015-04-22 | Rubinetterie Utensilerie Bonomi S R L | ASSEMBLY, PRECURSOR AND PROCEDURE FOR THE FORMATION OF CABLES |
| US10030751B2 (en) | 2013-11-18 | 2018-07-24 | Dana Limited | Infinite variable transmission with planetary gear set |
| US10088022B2 (en) | 2013-11-18 | 2018-10-02 | Dana Limited | Torque peak detection and control mechanism for a CVP |
| US10030594B2 (en) | 2015-09-18 | 2018-07-24 | Dana Limited | Abuse mode torque limiting control method for a ball-type continuously variable transmission |
| CN109909428A (en)* | 2019-04-25 | 2019-06-21 | 常熟非凡新材股份有限公司 | The moving beam control mechanism of steel ball molding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment | Owner name:LEADER TEK PRECISION INC., TAIWAN Free format text:ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHAI, DEAN;REEL/FRAME:012840/0813 Effective date:20020410 | |
| STCB | Information on status: application discontinuation | Free format text:ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |