Multi axis load cell body
A load cell body for transmitting forces and moments in plural directions is disclosed. The load cell body comprises a first member, a second member and a plurality of pairs of support columns. The second member includes a plurality of apertures, where a portion of a plurality of portions of the first member extends into each aperture. The plurality of pairs of support column columns are configured for each portion of the first member and the corresponding aperture of the second member, such that each pair of support columns connects the corresponding portion of the first member to the second member.
1. A load cell body for transmitting forces and moments in plural directions, the load cell body comprising:
a first member;
a second member having at least six spaced apart apertures, wherein a separate portion of the first member extends into each aperture; and
at least six pairs of support columns, wherein a pair of support columns is provided for each portion of the first member and corresponding aperture of the second member, each pair of support columns connecting the corresponding portion of the first member to the second member, wherein each pair of support columns comprise a first support column extending in each corresponding aperture and a second support column extending in each corresponding aperture, the second support column extending in an opposite direction from the first member and wherein longitudinal axes of the first support column and the second support column of each pair of support columns are aligned along a common axis, and wherein the at least six pairs of support columns comprise:
a first set of pairs of support columns having associated common axes parallel to each other;
a second set of pairs of support columns having associated common axes parallel to each other and orthogonal to the common axes of the first set of pairs of support columns; and
a third set of pairs of support columns having associated common axes parallel to each other and orthogonal to the common axes of the first set of pairs of support columns and orthogonal to the common axes of the second set of pairs of support columns.
2. The load cell body of claim 1 , wherein each pair of support columns connecting the first member to the second member comprises the first support column connecting a first side of the first member to the second member and the second support column connecting a second side of the first member to the second member, the second side of the first member being opposite to the first side of the first member.
3. The load cell body of claim 1 , wherein the common axes of the first set of pairs of support columns are disposed at equal angular intervals about a reference axis extending through a center of the first member.
4. The load cell body of claim 3 , wherein the common axes of the second set of pairs of support columns are disposed at equal angular intervals about the reference axis extending through the center of the first member.
5. The load cell body of claim 4 , wherein the common axes of the third set of pairs of support columns are disposed at equal angular intervals about the reference axis extending through the center of the first member.
6. The load cell body of claim 4 , wherein each pair of support columns of the second set of support columns are disposed between adjacent pairs of support columns of the first set.
7. The load cell body of claim 5 , wherein each pair of support columns of the third set of support columns are disposed between adjacent pairs of support columns of the first set.
8. The load cell body of claim 1 , wherein the first member comprises a plate.
9. The load cell body of claim 1 , wherein the second member comprises a structure having a rigid first perimeter portion and a second perimeter portion and at least one support extending between the first perimeter portion and the second perimeter portion.
10. The load cell body of claim 9 , wherein the at least one support comprises at least three supports.
11. The load cell body of claim 10 , wherein each corner of the second member includes an aperture.
12. The load cell body of claim 11 , wherein each support comprises a wall having an aperture spaced apart from each corner aperture.
13. The load cell body of claim 1 , wherein each portion of the first member includes a first side and a second side facing in opposite directions, wherein the first support column of each pair of support columns extends from the first side of each portion of the first member and is connected to the second member, and wherein the second support column of the each pair of support columns extends in a direction opposite the first support column from the second side of the portion of the first member and is connected to the second member.
14. The load cell body of claim 1 , wherein the support columns are of the same shape.
15. The load cell body of claim 1 , wherein surfaces of at least some of the portions of the first member to which the support columns are joined face away from each other.
16. The load cell body of claim 1 , wherein surfaces of at least some of the portions of the first member to which the support columns are joined face toward each other.
17. The load cell body of claim 1 , wherein the first member, the second member and the at least six pairs of support columns are an integral assembly being formed of a single unitary body.