Simultaneous Integral Milling Operation Machine

• US 20110308066A1
• Filed: 06/29/2011
• Published: 12/22/2011
• Est. Priority Date: 12/31/2008
• Status: Abandoned Application

• Current Assignee: Pacific Bearing Company
• Original Assignee: Pacific Bearing Company
• Inventors: Schroeder, Robert, O'Connor, William E., Oldenburg, Dennis L.
• Application Number:
  US13/172,441
• Publication Number:
  US 20110308066A1
• Time in Patent Office: Days
• US Class Current: 29/558
• CPC Class Codes: B23C 1/10 with both horizontal and vertical working-spindles
• CPC Class Codes: B23C 3/002 Milling elongated workpieces
• CPC Class Codes: B23Q 11/0046 by sucking
• CPC Class Codes: B23Q 39/028 with a plurality of workholder per toolhead in operating position with only one workholder in operating position B23Q1/66
• CPC Class Codes: F16C 2322/39 General buildup of machine tools, e.g. spindles, slides, actuators
• CPC Class Codes: F16C 29/005 Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
• CPC Class Codes: Y10T 29/49996 Successive distinct removal operations
• CPC Class Codes: Y10T 29/5122 with means to feed work during tool contact

Abstract

A machining apparatus and method of machining a work piece are provided. The method generally includes machining a plurality of independent surfaces of the work piece as the work piece travels along a work path and through a plurality of machining stations in a single pass. The machining apparatus includes a frame and first and second machining stations mounted to the frame. Each machining station is configured to form an independent surface in a work piece passed through the machining apparatus. The machining apparatus also includes a feed arrangement for feeding the work piece through the apparatus along a feed path and relative to the first and second machining stations and the frame while machining is performed on the work piece.

Claims

1. A method for machining a work piece comprising the steps of:

machining a first independent surface into the work piece along a length of the work piece using a first machining station; and

machining a second independent surface into the work piece along the length of the work piece using a second machining station.

2. The method of claim 1, further comprising the step of:

feeding the work piece along a feed path relative to the first and second machining stations while maintaining the first and second machining stations stationary relative to a frame supporting the first and second machining stations.

3. The method of claim 2, wherein the step of machining the first independent surface is performed at a location upstream along the feed path relative to the step of machining the second independent surface.

4. The method of claim 2, wherein the step of machining the first independent surface is performed at a same location along the feed path relative to the step of machining the second independent surface, such that the steps of machining the first and the second independent surfaces are completed simultaneously.

5. The method of claim 4, wherein the steps of machining the first and second independent surfaces are conducted simultaneously wherein the first and second machine stations are in opposed axial alignment, such that the first and second independent surfaces are in opposed spaced relation and parallel to one another.

6. The method of claim 3, wherein the step of machining the first independent surface defines a first qualified surface and the second independent surface is toleranced relative to the first qualified surface.

7. The method of claim 6, further comprising the step of supporting the work piece at the first qualified surface in a direction transverse at the location where the step of machining the second independent surface is performed on the work piece such that the second independent surface is machined relative to the first qualified surface and is toleranced therefrom.

8. The method of claim 2, wherein the step of machining the first independent surface defines a first qualified surface and the second independent surface is toleranced relative to the first qualified surface, further comprising the steps of machining a third independent surface into the work piece along the length of the work piece using a third machining station and machining a fourth independent surface into the work piece along the length of the work piece using a fourth machining station, wherein the step of machining the third independent surface defines a second qualified surface and the fourth independent surface is toleranced relative to the second qualified surface.

9. The method of claim 8, further comprising the step of supporting the work piece in a first direction transverse to the length of the feed path with the first qualified surface at the location where the step of machining the second independent surface is performed on the work piece and further comprising the step of supporting the work piece in a second direction transverse to the length of the feed path with the second qualified surface at the location where the step of machining the fourth independent surface is performed on the work piece such that the fourth independent surface is machined relative to the second qualified surface and is toleranced therefrom.

10. The method of claim 2, further comprising the step of adjusting a position of at least one of the first and second machining stations relative to the feed path in a direction not parallel to the feed path, prior to machining of the work piece;

and wherein the step of adjusting the position of at least one of the first and second machining stations includes adjusting an angular position of the at least one first and second machining stations about the feed path.

11. The method of claim 10, wherein the step of adjusting the position of at least one of the first and second machining stations adjusts the angular position of the at least one first and second machining station about the feed path as well as adjusts the position of the at least one first and second machining stations relative to the other one of the first and second machining stations.

12. The method of claim 2, further comprising the step of adjusting a position of at least one of the first and second machining stations relative to the feed path in a direction not parallel to the feed path, prior to machining of the work piece, wherein the step of adjusting the position of at least one of the first and second machining stations includes moving the machining station linearly along a direction that is oblique to the direction of travel along which the work piece travels along the feed path.

13. The method of claim 2, further comprising the step of adjusting a position of at least one of the first and second machining stations relative to the feed path in a direction not parallel to the feed path, prior to machining of the work piece, wherein the step of adjusting a position of at least one of the first and second machining stations includes switching to one of a plurality of predetermined configurations of the first and second machining stations relative to the feed path.

14. The method of claim 2, further comprising the steps of machining a third independent surface into the work piece along the length of the work piece using a third machining station and machining a fourth independent surface into the work piece along the length of the work piece using a fourth machining station;

and

further comprising the step of locating the work piece using the first and second independent surfaces during at least one of the steps of machining the third and fourth independent surfaces.

15. The method of claim 14, wherein the at least one of the steps of machining the third and fourth independent surfaces occurs downstream from the steps of machining the first and second independent surfaces.

16. The method of claim 1, wherein the step of feeding includes feeding the work piece using a feed arrangement, the feed arrangement having at least one support arrangement and at least one drive mechanism, wherein the support arrangement contacts at least one of the first and second independent surfaces.

17. The method of claim 1, wherein the step of feeding includes feeding the work piece using a feed arrangement, the feed arrangement having at least one support arrangement and at least one drive mechanism;

wherein the support arrangement contacts at least one of the first and second independent surfaces, wherein the at least one support arrangement includes a plurality of rollers in contact with the work piece; and

wherein the at least one drive mechanism includes a first and a second drive mechanism, the first and second drive mechanisms operably coupled together to synchronously feed the work piece during the step of feeding.

18. The method of claim 17, further comprising the steps of:

machining a third independent surface into the work piece along the length of the work piece using a third machining station;

machining a fourth independent surface into the work piece along the length of the work piece using a fourth machining station;

wherein the steps of machining the third and fourth independent surfaces are performed simultaneously at a same location along the feed path and at least one of the third and fourth independent surface is a second qualified surface; and

wherein the steps of machining the first and second independent surfaces are performed at a location upstream along the feed path from a location where the steps of machining the third and fourth independent surfaces.

19. The method of claim 17, further comprising the steps of:

machining a third independent surface into the work piece along the length of the work piece using a third machining station;

machining a fourth independent surface into the work piece along the length of the work piece using a fourth machining station;

wherein the steps of machining the third and fourth independent surfaces are performed simultaneously at a same location along the feed path and at least one of the third and fourth independent surface is a second qualified surface; and

wherein the first, second, third and fourth surfaces are qualified surfaces.

20. The method of claim 17, further comprising the steps of:

machining a third independent surface into the work piece along the length of the work piece using a third machining station;

machining a fourth independent surface into the work piece along the length of the work piece using a fourth machining station;

wherein the steps of machining the third and fourth independent surfaces are performed simultaneously at a same location along the feed path and at least one of the third and fourth independent surface is a second qualified surface; and

further comprising locating the steps of machining at least one of the third and fourth independent surfaces off of the first qualified surface.

21. The method of claim 17, further comprising the steps of:

machining a third independent surface into the work piece along the length of the work piece using a third machining station;

machining a fourth independent surface into the work piece along the length of the work piece using a fourth machining station;

wherein the steps of machining the third and fourth independent surfaces are performed simultaneously at a same location along the feed path and at least one of the third and fourth independent surface is a second qualified surface; and

further comprising the steps of;

machining a fifth independent surface into the work piece along the length of the work piece using a fifth machining station; and

locating the step of machining the fifth surface off of the first qualified surface.

22. The method of claim 1, wherein the first and second independent surfaces have a parallelism of between about 0.001 to 0.0025 inch per foot.

23. The method of claim 2, wherein all independent surfaces are formed by a single pass of the work piece along the feed path.

24. An apparatus for machining work piece comprising:

a frame;

a first machining station for machining a first independent surface into the work piece, the first machining station mounted to the frame;

a second machining station for machining a second independent surface into the work piece, the second machining station mounted to the frame; and

a feed arrangement for feeding the work piece through the apparatus along a feed path and relative to the first and second machining stations and the frame while machining is performed on the work piece.

25. The apparatus of claim 24, further comprising a third, fourth, fifth and sixth machining stations mounted to the frame for machining third, fourth, fifth and sixth independent surfaces into the work piece, respectively.

26. The apparatus of claim 24, wherein the first and second machining stations are moveable relative to the frame to adjust positions thereof relative to the feed path, the first and second machining stations being fixed in various positions during machining;

and

wherein the first and second machining stations are moveable relative to the frame such that the first and second machining stations are angularly positionable relative to the feed path.

27. The apparatus of claim 24, wherein the first and second machining stations are moveable relative to the frame to adjust positions thereof relative to the feed path, the first and second machining stations being fixed in various positions during machining;

and

wherein the first and second machining stations are moveable relative to the frame such that the first and second machining stations are linearly positionable relative to the feed path along a direction that is perpendicular to the feed path.

28. The apparatus of claim 24, wherein the first machining station is positioned upstream from the second machining station along the feed path.

29. The apparatus of claim 24, wherein the feed arrangement includes a plurality of drive mechanisms, the plurality of drive mechanisms operably connected to one another to synchronously drive the work piece along the feed path.

30. The apparatus of claim 24, wherein the first and second machining stations includes a motor, a machining head and a positioning system, the motor operably coupled to the machining head to drive the machining head to perform a machining operation, the positioning system mounting, at least, the machining head to the frame and adjusting the position of the machining head relative to the frame.

31. The apparatus of claim 24, wherein the first and second machining stations are stationary relative to the frame during machining and work piece is fed linearly along the feed path through the apparatus during machining, the first and second machining stations serially aligned relative to the feed path.

32. The apparatus of claim 28, wherein the feed arrangement includes an upstream portion upstream along the feed path from the first machining station and a downstream portion downstream along the feed path from the first machining station, wherein the downstream portion includes a first support arrangement, the first support arrangement supporting the work piece via the first independent surface after the work piece passes through and is machined by the first machining arrangement;

and

wherein the first support arrangement includes a first guide upon which the first independent surface rides, the first support arrangement further including a biasing mechanism for biasing the work piece toward the first guide and the first independent surface into the first guide.

33. The apparatus of claim 24, wherein the first and second machining stations are axially aligned in an opposed spaced relationship such that the first and second machining stations form the first and second independent surfaces simultaneously, the first and second surfaces being parallel to one another.

34. The apparatus of claim 28, wherein the feed arrangement includes an upstream portion upstream along the feed path from the first machining station and a downstream portion downstream along the feed path from the first machining station, wherein the downstream portion includes a first support arrangement, the first support arrangement supporting the work piece via the first independent surface after the work piece passes through and is machined by the first machining arrangement;

and

wherein the feed arrangement includes a second downstream portion downstream along the feed path from the second machining station, wherein the second downstream portion includes a second support arrangement, the second support arrangement supporting the work piece via the second independent surface after the work piece passes through and is machined by the second machining station.

35. The apparatus of claim 28, wherein the feed arrangement includes an upstream portion upstream along the feed path from the first machining station and a downstream portion downstream along the feed path from the first machining station, wherein the downstream portion includes a first support arrangement, the first support arrangement supporting the work piece via the first independent surface after the work piece passes through and is machined by the first machining arrangement;

and

further comprising a third machining station for machining a third independent surface into the work piece, the third machining station being downstream from the first machining station, the positioning of the third machining station being toleranced relative to the first machining station.

36. The apparatus of claim 24, further comprising an electronic controller for controlling operations of the first and second machining stations;

wherein the electronic controller is preprogrammed with a plurality of different selectable machining station set-ups for machining different profiles into the work piece; and

wherein a difference between at least two of the different machining station set-ups is a position of at least one of the first and second machining stations relative to the feed path, the electronic controller operably controlling the position of the first and second machining stations in accordance with the selected one of the selectable machining station set-ups.