US3835739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machining apparatus
Assignee: Cross Co
•
Filing: 1973-06-15
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Granted: 1974-09-17
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Expires: 1993-06-15
Abstract
Abstract Apparatus for machining parts, such as pistons, comprising a main spindle having an axis, a tool holding head movably mounted on one end of the spindle, a plurality of tools mounted in a circular formation on the head at positions spaced radially outwardly from the axis and a cross slide for moving the head transversely of the axis so that the tools thereon are movable between concentric and eccentric positions relative to the spindle axis. When the tools are in their concentric positions, a workpiece can be centered on the spindle axis in a clearance relation with the tools. When the cross slide is actuated to move the tool head toward the eccentric position, one of the tools is moved into machining engagement with the workpiece. The tool head is rotatable on the spindle to index the tools and is readily removable from the spindle for tool replacement purposes.
Inventors
- 👤 J Trees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:47
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/22; Y; Y10; Y10T; Y10T82/00; Y10T82/13; Y10T82/25; Y10T82/2527; Y10T82/2529
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
83 words
Machining apparatus comprising a main spindle having an axis, a tool holding head movably mounted on said spindle, a plurality of tools mounted on said head at positions spaced radially outwardly from said axis, means for imparting translatory movement to said head in a direction to provide for movement of one of said tools radially inwardly of said axis, and means for rotating said head so as to index another one of said tools into the position previously occupied by said one tool.
Claim 2
Dependent Claim
83 words
Machining apparatus comprising a main spindle having an axis, a tool holding head movably mounted on said spindle, a plurality of tools mounted on said head at positions spaced radially outwardly from said axis, means for imparting translatory movement to said head in a direction to provide for movement of one of said tools radially inwardly of said axis, and means for rotating said head so as to index another one of said tools into the position previously occupied by said one tool.
Claim 3
Dependent Claim
42 words
Machining apparatus according to claim 1 wherein said tools are arranged in a generally circular formation on said head and wherein translatory movement of said head is effective to move said tools between substantially concentric and eccentric positions relative to said axis.
Claim 4
Dependent Claim
94 words
Machining apparatus according to claim 2 wherein said tools in said concentric position of said formation are spaced apart a distance to accommodate a cylindrical workpiece intended for said apparatus and positioned in a concentric relation with said axis, said workpiece being of a sufficiently smaller diameter than said circular formation to provide for a clearance relation between said tools and said workpiece whereby on movement of said head to provide for movement of one of said tools radially inwardly of said axis, said one tool is movable into machining engagement with said workpiece.
Claim 5
Dependent Claim
43 words
Apparatus according to claim 1 wherein said means for imparting translatory movement to said tool head comprises a cross slide mounted on said spindle for movement in a direction radially of said axis, and means connecting said cross slide to said tool head.
Claim 6
Dependent Claim
34 words
Apparatus according to claim 4 wherein said means connecting said cross slide to said tool head includes clutch means enabling rotational movement of said tool head relative to said slide to index said tools.
Claim 7
Dependent Claim
40 words
Apparatus according to claim 4 further including a tool feeding spindle mounted for movement axially of said main spindle, and drive wheel means actuated by axial movement of said feed spindle for moving said cross slide radially of said axis.
Claim 8
Dependent Claim
87 words
Apparatus according to claim 1 wherein said means for rotating said head comprises an index spindle mounted for movement axially of said main spindle, an index body connected to said tool head, and coacting drive meAns on said index spindle and said index body movable into and out of engagement in response to said axial movement of said index spindle, whereby rotation of said index spindle is operable to provide for rotation of said index body and said tool head to index said tools on said head.
Claim 9
Dependent Claim
66 words
Apparatus according to claim 7 further including a cross slide assembly mounted on said main spindle and movable radially of said axis, means engaging said index body providing for movement thereof in response to movement of said cross slide assembly, and clutch means mounted on and extending between said index body and said cross slide assembly enabling relative rotational movement therebetween during indexing of said tools.
Claim 10
Dependent Claim
45 words
Apparatus according to claim 8 wherein said clutch means comprises a pair of facing members extending about said axis, each of said members having teeth disposed in a plane that is generally perpendicular to said axis, and spring means urging said teeth into engaged positions.
Claim 11
Dependent Claim
143 words
Machining apparatus comprising a main spindle having an axis, a feed spindle mounted coaxially within said main spindle, an index spindle mounted coaxially within said feed spindle, a cross slide assembly secured to said main spindle, said assembly including a cross slide member movable radially of said spindle axis, an index body, clutch means mounting said body on said cross slide assembly so that said body is rotatable about said axis relative to said cross slide assembly, a tool head mounting member mounted on said index body, a tool head having a plurality of tools mounted thereon and arranged in a circular formation thereon, means mounting said tool head on said tool head mounting member, said tools being movable in response to actuation of said cross slide between positions in which said formation is substantially concentric and eccentric with respect to said axis.
Claim 12
Dependent Claim
143 words
Machining apparatus comprising a main spindle having an axis, a feed spindle mounted coaxially within said main spindle, an index spindle mounted coaxially within said feed spindle, a cross slide assembly secured to said main spindle, said assembly including a cross slide member movable radially of said spindle axis, an index body, clutch means mounting said body on said cross slide assembly so that said body is rotatable about said axis relative to said cross slide assembly, a tool head mounting member mounted on said index body, a tool head having a plurality of tools mounted thereon and arranged in a circular formation thereon, means mounting said tool head on said tool head mounting member, said tools being movable in response to actuation of said cross slide between positions in which said formation is substantially concentric and eccentric with respect to said axis.
Claim 13
Dependent Claim
40 words
Apparatus according to claim 10 further including spring means extending between said tool head mounting member and said index body yieldably maintaining said clutch means in operative engagement so that said cross slide assembly and said index body rotate together.
Claim 14
Dependent Claim
42 words
Apparatus according to claim 10 further including a toothed wheel movably mounted on said cross slide assembly and engaged with said spindle and said cross slide member so that axial movement of said feed spindle causes radial movement of said cross slide.
Claim 15
Dependent Claim
57 words
Apparatus according to claim 12 further including coacting means on said index spindle and said index body enabling axial movement of said index spindle into driving engagement with said index body so that in response to rotation of said index spindle, said index body is rotatable relative to said cross slide assembly to thereby index said tools.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |