US3602078A
Expired / Lapsed
US
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Method and apparatus for the manufacture of two annular bodies fitting one within the other
Assignee: F B HATEBUR AG
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Filing: 1969-08-19
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Granted: 1971-08-31
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Expires: 1989-08-19
Abstract
Abstract A method and apparatus for manufacturing two annular members from a preformed blank, wherein the blank is supported in a female die, a coaxial blanking punch is moved relative to the die to separate inner and outer annular parts of the blank, the inner annular parts of the blank, the inner annular part being supported against axial displacement by a coaxial inner female die during perforation of the inner part by a perforating punch mounted coaxially on the blanking punch, the two female dies moving relatively while the separation of the blank parts takes place.
Inventors
- 👤 Peter Schindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:01
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/003; B23D; B23D27/00; B23D31/00; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0491; Y10T83/0524; Y10T83/0577; Y10T83/06; Y10T83/808; Y10T83/825; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/8832; Y10T83/8834
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
176 words
Apparatus for manufacturing two annular members capable of fitting one within the other, from a preformed blank in the form of an inner annular part and an outer annular part connected by a web, said apparatus comprising, in combination: a. a reciprocable slide; b. a blanking punch mounted for axial reciprocation with said slide; c. a female die body arranged coaxially with said blanking punch, and effective, with said blanking punch, to separate said inner and outer annular parts; d. an inner female die mounted for axial displacement within said female die body; e. a perforating punch coaxially on said blanking punch effective with said inner female die, to perforate said inner annular part of said blank; and f. control means maintaining said inner female die stationary against axial displacement effective to support said inner annular part during perforation thereof by said perforating punch, and permitting relative axial displacement between said inner female die and said female die body during separation of said inner and outer annular parts by said blanking punch and female die body.
Claim 2
Dependent Claim
176 words
Apparatus for manufacturing two annular members capable of fitting one within the other, from a preformed blank in the form of an inner annular part and an outer annular part connected by a web, said apparatus comprising, in combination: a. a reciprocable slide; b. a blanking punch mounted for axial reciprocation with said slide; c. a female die body arranged coaxially with said blanking punch, and effective, with said blanking punch, to separate said inner and outer annular parts; d. an inner female die mounted for axial displacement within said female die body; e. a perforating punch coaxially on said blanking punch effective with said inner female die, to perforate said inner annular part of said blank; and f. control means maintaining said inner female die stationary against axial displacement effective to support said inner annular part during perforation thereof by said perforating punch, and permitting relative axial displacement between said inner female die and said female die body during separation of said inner and outer annular parts by said blanking punch and female die body.
Claim 3
Dependent Claim
55 words
Apparatus as claimed in claim 1, wherein said blanking punch is mounted fixedly on said reciprocable slide and said perforating punch is axially displaceably mounted within said blanking punch and further comprising drive means effective to move said perforating punch relative to said blanking punch shortly before separation of said inner and outer annular parts.
Claim 4
Dependent Claim
32 words
Apparatus as claimed in claim 2, wherein said control means comprise a rod connected to said inner female die and a cam operating said rod to move said inner female die axially.
Claim 5
Dependent Claim
20 words
Apparatus as claimed in claim 1, wherein the blanking punch and perforating punch are formed as an integral stepped punch.
Claim 6
Dependent Claim
32 words
Apparatus as claimed in claim 4, wherein said control means comprise a rod connected to said inner female die and a cam operating said rod to move said inner female die axially.
Claim 7
Independent Claim
156 words
A method for manufacturing two annular members capable of fitting one within the other, from a preformed blank in the form of an inner annular part and an outer annular part connected by a web, such method comprising the steps of supporting the blank in a female die body arranged coAxial with a reciprocably slidable blanking punch, moving the blanking punch relative to the female die body to separate the inner annular part from the outer annular part, supporting the inner annular part against axial displacement by means of an inner female die coaxial with the female die body during perforation of said inner annular part by a perforating punch mounted coaxially on said blanking punch, permitting said female die body and inner female die to move axially relative to one another during separation of the inner annular part from the outer annular part, and reciprocatingly sliding the blanking punch in relation to the perforating punch.
Claim 8
Independent Claim
156 words
A method for manufacturing two annular members capable of fitting one within the other, from a preformed blank in the form of an inner annular part and an outer annular part connected by a web, such method comprising the steps of supporting the blank in a female die body arranged coAxial with a reciprocably slidable blanking punch, moving the blanking punch relative to the female die body to separate the inner annular part from the outer annular part, supporting the inner annular part against axial displacement by means of an inner female die coaxial with the female die body during perforation of said inner annular part by a perforating punch mounted coaxially on said blanking punch, permitting said female die body and inner female die to move axially relative to one another during separation of the inner annular part from the outer annular part, and reciprocatingly sliding the blanking punch in relation to the perforating punch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |