Connection arrangement comprising at least two bodies (11a, 11b) of components of a movement mechanical automation group to be connected to each other and a constraining group for constraining said at least two bodies (11a, 11b) to each other in a removable manner, wherein each of said two bodies comprises - a face (13a, 13b) that, when said two bodies (11a, 11b) are in the connection configuration to each other, faces the corresponding face (13a, 13b) of the other one of said two bodies (11a, 11b) and that has two opposite perimeter portions, - two sides that extend from said opposite perimeter portions and - a pair of recesses (14a, 15a; 14b, 15b) each of which is defined along a respective said side and has a first flank (140a, 150a; 140b, 150b) and a second flank (141a, 151a; 141b, 151b) that are angled to each other and diverge outwards, wherein, when said two bodies (11a, 11b) are in the connection configuration with each other, each recess (14a, 15a; 14b, 15b) of one of said two bodies (11a, 11b) defines, with a corresponding recess (14a, 15a; 14b, 15b) of the other one of said two bodies (11a, 11b), a respective coupling seat with said constraining group, and wherein said constraining group comprises: - at least one pair of locking clamps (18, 19), each of which is at least partially insertable into a respective said coupling seat, and - at least one connection member for the removable connection of said locking clamps (18, 19) to each other, characterised in that each of said locking clamp (18, 19) has a pair of first resting surfaces (180, 181; 190, 191) that, when said two bodies (11a, 11b) are in the connection configuration with each other, are in contact with said first flanks (140a, 140b; 150a, 150b) of the recesses (14a, 14b; 15a, 15b) defining said respective coupling seat, and a pair of second resting surfaces (182, 183; 192, 193) that, when said two bodies (11a, 11b) are in the connection configuration to each other, are in contact with said second flanks (141a, 141b; 151a, 151b) of said recesses (14a, 14b; 15a, 15b) defining the respective said coupling seat, spacing from each other said mutually facing faces (13a, 13b) of said two bodies (11a, 11b) by a non-null distance (d) along a direction orthogonal to the lying plane (Pa, Pb) defined by each of said faces (13a, 13b) so that said faces (13a, 13b) do not have portions in mutual contact with each other. - a face (13a, 13b) that, when said two bodies (11a, 11b) are in the connection configuration to each other, faces the corresponding face (13a, 13b) of the other one of said two bodies (11a, 11b) and that has two opposite perimeter portions, - two sides that extend from said opposite perimeter portions and - a pair of recesses (14a, 15a; 14b, 15b) each of which is defined along a respective said side and has a first flank (140a, 150a; 140b, 150b) and a second flank (141a, 151a; 141b, 151b) that are angled to each other and diverge outwards, wherein, when said two bodies (11a, 11b) are in the connection configuration with each other, each recess (14a, 15a; 14b, 15b) of one of said two bodies (11a, 11b) defines, with a corresponding recess (14a, 15a; 14b, 15b) of the other one of said two bodies (11a, 11b), a respective coupling seat with said constraining group, - at least one pair of locking clamps (18, 19), each of which is at least partially insertable into a respective said coupling seat, and - at least one connection member for the removable connection of said locking clamps (18, 19) to each other, characterised in that