Adjustable workpiece positioning and clamping system

1. A track comprising having a top surface

and a bottom surface opposite the top surface, wherein the track forms:

a center T-slot extending along a longitudinal direction of the track and intersecting the top surface of the track;

a first mounting T-slot extending along the longitudinal direction of the track and intersecting the bottom surface of the track;

a second mounting T-slot extending along the longitudinal direction of the track and intersecting the bottom surface of the track, wherein the center T-slot is located between the first mounting T-slot and the second mounting T-slot; and

wherein a minimum distance of the track between one of the mounting slots and an edge of the track as measured in the width direction of the track is about half of a minimum distance of the track between one of the mounting slots and the center T-slot of the track as measured in the width direction of the track.

2. The track of claim 1 , wherein the cross-section of the track perpendicular to the longitudinal length of the track is consistent throughout the longitudinal length of the track.

3. The track of claim 1 , wherein the top surface is flat.

4. The track of claim 1 , wherein the bottom surface includes a set of protrusions that combine to form the bottom surface.

5. The track of claim 1 , wherein the track comprises extruded aluminum.

6. A spacer block assembly comprising:

a body forming:

a first alignment surface,

a second alignment surface, wherein the second alignment surface is opposite the first alignment surface,

a first protrusion extending from a first track-engagement surface,

a second protrusion extending from a second track-engagement surface, wherein the second track-engagement surface is opposite the first track-engagement surface,

a track-engaging component including:

a shaft extending from the first protrusion, and

a head configured to slideably engage a T-slot of a track,

wherein the body is configured such that the first protrusion slideably engages the T-slot in the track to maintain the alignment of the body when the head is slideably engaged in the T-slot;

wherein the body further forms:

a first hole in the first protrusion; and

a second hole in the second protrusion;

wherein the shaft of the track-engaging component is a threaded shaft sized to fit within both the first hole and the second hole, further comprising a nut engaging the threaded shaft opposite the first protrusion.

7. The spacer block assembly of claim 6 ,

wherein the spacer block assembly is reversible such that either one of the first alignment surface and the second alignment surface may be utilized to facilitate precisely locating a workpiece proximate the track at one of at least two different spacings between a workpiece and the track, and

wherein the first protrusion slideably engages the T-slot in the track to maintain the alignment of the body when the head is engaged in the T-slot when either one of the first alignment surface and the second alignment surface are utilized.

8. The spacer block assembly of claim 6 , wherein the spacer block assembly can be reconfigured such that the track engaging component can extend from the second protrusion instead of the first protrusion such that the second protrusion would slideably engage the T-slot in the track to maintain the alignment of the body when the head of the track engaging component was engaged in the T-slot.

9. The spacer block assembly of claim 6 , wherein the spacer block assembly is configured to facilitate precisely locating a workpiece proximate the track according to any of least four different precise spacings between a workpiece and the track.

10. The spacer block assembly of claim 6 , wherein the first hole is parallel to the second hole.

11. The spacer block assembly of claim 6 , wherein the body is an injection-molded polymer.

12. A spacer block assembly for positioning one or more workpieces proximate to a track comprising:

a body;

a first alignment surface formed on the body opposite a second alignment surface formed on the body;

a first track engagement surface formed on the body opposite a second track engagement surface formed on the body;

a track engaging component extending from one of the first and second track engagement surfaces to position the alignment surfaces at different spacings relative to the track;

wherein the first alignment surface positions a workpiece at a first spacing interval proximate to the track and the second alignment surface positions a workpiece at a second spacing interval proximate to the track when the track engaging component extends from the first track engagement surface and engages the track; and

wherein the first alignment surface positions a workpiece at a third spacing interval proximate to the track and the second alignment surface positions a workpiece at a fourth spacing interval proximate to the track when the track engaging component extends from the second track engagement surface and engages the track.

13. The spacer block assembly of claim 12 additionally comprising a first protrusion extending from the first track engagement surface and a second protrusion extending from the second track engagement surface.

14. The spacer block assembly of claim 13 additionally comprising a first hole in the first protrusion and a second hole in the second protrusion wherein the first hole is parallel to the second hole wherein the track engaging component is installed within one of the first hole adjacent the first protrusion and the second hole adjacent the second protrusion.