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 ribs Download PDF

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Publication number
US20030200783A1
US20030200783A1 US10/132,475 US13247502A US2003200783A1 US 20030200783 A1 US20030200783 A1 US 20030200783A1 US 13247502 A US13247502 A US 13247502A US 2003200783 A1 US2003200783 A1 US 2003200783A1
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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
Application number
US10/132,475
Inventor
Dean Shai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leader Tek Precision Inc
Original Assignee
Leader Tek Precision Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Leader Tek Precision Inc filed Critical Leader Tek Precision Inc
Priority to US10/132,475 priority Critical patent/US20030200783A1/en
Assigned to LEADER TEK PRECISION INC. reassignment LEADER TEK PRECISION INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SHAI, DEAN
Publication of US20030200783A1 publication Critical patent/US20030200783A1/en
Abandoned legal-status Critical Current

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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 OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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 invention relates 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 specification is 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 21 are provided with an arcuate wall 211 .
  • the valve ball 3 is 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 above is 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 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.
  • 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.
  • FIG. 1 shows a schematic process flow of a prior art valve ball.
  • FIG. 2 shows a schematic process flow of a valve ball blank of the present invention.
  • FIG. 3 shows a schematic process flow of a valve ball of the present invention.
  • a hollow metal tube 4 of a specification is 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 5 has an upper mold 51 , a lower mold 52 , an upper die block 53 , and. A lower die block 54 .
  • the hollow metal tube 4 is disposed between the upper mold 51 and the lower mold 52 .
  • each of the two reinforcing ribs 61 has an inner ridge 611 and an outer ridge 612 .
  • the valve ball blank 6 of the present invention is provided with two reinforcing ribs 61 , as shown in FIG. 2.
  • the reinforcing ribs 61 of the valve ball blank 6 can 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 invention is arranged between an upper mold 71 and a lower mold 72 of a forging machine 7 .
  • the upper mold 71 is 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 6 are 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 8 is 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 81 gives an added strength to the structure of the retaining slot 82 .

Abstract

A hollow metal tubular blank is provided in the wall with one or more reinforcing ribs which are formed by extrusion of the wall. The reinforcing ribs have an inner ridge and an outer ridge. The reinforcing ribs serve to enhance the structural strength of a retaining slot which is formed in the reinforcing portion of the wall of the blank.

Description

    FIELD OF THE INVENTION
  • 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]
    • BACKGROUND OF THE INVENTION
  • 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 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 21 are provided with an arcuate wall 211. The valve ball 3 is 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 [0003] 1 as described above is 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.
    • SUMMARY OF THE INVENTION
  • 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]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • 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]
    • DETAILED DESCRIPTION OF THE INVENTION
  • As shown in FIG. 2, a [0009] hollow metal tube 4 of a specification is 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 5 has an upper mold 51, a lower mold 52, an upper die block 53, and. A lower die block 54. When the upper and the lower molds 51 and 52 are joined together with the upper and the lower die blocks 53 and 54, two arcuate recesses 55 are formed. The hollow metal tube 4 is disposed between the upper mold 51 and the lower mold 52. When the upper mold 51 is at work, both ends of the hollow metal tube 4 are under great pressure such that the walls of the both ends of the hollow metal tube 4 are extruded toward the arcuate recesses 55, thereby resulting in formation of two reinforcing ribs 61 opposite to each other. Each of the two reinforcing ribs 61 has an inner ridge 611 and an outer 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 reinforcing ribs 61 of the valve ball blank 6 can be located at any desired location by adjusting the position of the arcuate recesses 55 of the dieing 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 a lower mold 72 of a forging machine 7. The upper mold 71 is provided with an arcuate slot 711 while the lower mold 72 is provided with an arcuate slot 721. As the valve ball blank 6 is pressed, the outer ridges 612 of the valve ball blank 6 are 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. As a result, a valve ball 8 is 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 81 gives an added strength to the structure of the retaining 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)

What is claimed is:
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 in claim 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 in claim 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.
US10/132,475 2002-04-26 2002-04-26 Hollow tubular blank provided in wall thereof with one or more reinforcing ribs Abandoned US20030200783A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/132,475 US20030200783A1 (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
US10/132,475 US20030200783A1 (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
US20030200783A1 true US20030200783A1 (en) 2003-10-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/132,475 Abandoned US20030200783A1 (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)

* Cited by examiner, † Cited by third party
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
US9556941B2 (en) 2012-09-06 2017-01-31 Dana Limited Transmission having a continuously or infinitely variable variator drive
US9556943B2 (en) 2012-09-07 2017-01-31 Dana Limited IVT based on a ball-type CVP including powersplit paths
US9599204B2 (en) 2012-09-07 2017-03-21 Dana Limited Ball type CVT with output coupled powerpaths
US9638296B2 (en) 2012-09-07 2017-05-02 Dana Limited Ball type CVT including a direct drive mode
US9638301B2 (en) 2013-03-14 2017-05-02 Dana Limited Ball type continuously variable transmission
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
US10030594B2 (en) 2015-09-18 2018-07-24 Dana Limited Abuse mode torque limiting control method for a ball-type continuously variable transmission
US10030748B2 (en) 2012-11-17 2018-07-24 Dana Limited 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

Cited By (26)

* Cited by examiner, † Cited by third party
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
US9638296B2 (en) 2012-09-07 2017-05-02 Dana Limited Ball type CVT including a direct drive mode
US9353842B2 (en) 2012-09-07 2016-05-31 Dana Limited Ball type CVT with powersplit paths
US10088026B2 (en) 2012-09-07 2018-10-02 Dana Limited Ball type CVT with output coupled powerpaths
US9416858B2 (en) 2012-09-07 2016-08-16 Dana Limited Ball type continuously variable transmission/infinitely variable transmission
US10006527B2 (en) 2012-09-07 2018-06-26 Dana Limited Ball type continuously variable transmission/infinitely variable transmission
US9689477B2 (en) 2012-09-07 2017-06-27 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
US9599204B2 (en) 2012-09-07 2017-03-21 Dana Limited Ball type CVT with output coupled powerpaths
US10030748B2 (en) 2012-11-17 2018-07-24 Dana Limited Continuously variable transmission
US9644530B2 (en) 2013-02-08 2017-05-09 Dana Limited Internal combustion engine coupled turbocharger with an infinitely variable transmission
US9404414B2 (en) 2013-02-08 2016-08-02 Dana Limited Internal combustion engine coupled turbocharger with an infinitely variable transmission
US20140274552A1 (en) * 2013-03-14 2014-09-18 Dana Limited Cvt variator ball and method of construction thereof
US9689482B2 (en) 2013-03-14 2017-06-27 Dana Limited Ball type continuously variable transmission
US9638301B2 (en) 2013-03-14 2017-05-02 Dana Limited Ball type continuously variable transmission
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
ITBS20130148A1 (en) * 2013-10-21 2015-04-22 Rubinetterie Utensilerie Bonomi S R L ASSEMBLY, PRECURSOR AND PROCEDURE FOR THE FORMATION OF CABLES
WO2015059601A1 (en) * 2013-10-21 2015-04-30 Rubinetterie Utensilerie Bonomi S.R.L. Assembly, precursor and process for forming hollow bodies
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