AN ALTERNATIVE METHOD TO TOLERANCE TRANSFER FOR PARTS WITH 2D BLUEPRINT

F Gonzalez Contreras (1) , Pedro Rosado (2)

1 Department of Mechanical Engineering
2 Department of Mechanical Engineering

The classic tolerance charting method to allocate working dimensions and tolerances, is a particular case of tolerance transfer between different dimension schemes. Tolerance transfer allows tolerance allocation for a new dimension scheme complying initials blueprint specifications. This paper suggests a new method to tolerance transfer that allows the evaluation of dimensions and their tolerance which are equivalent in 2D problems. Initially, a method that is able to consider dimensions, angles and orientation tolerances, is established. The first thing that is indicated in the proposed method is how to establish the equations for each 2D dimensional chains through 2D graphs. In an intermediate step a strategy to solve the 2D equations obtaining relations between the tolerances is proposed. Finally the equivalent tolerances are evaluated, considering both the variance accumulation theory and the deviation accumulation theory. The proposed methodology has been applied to different cases with satisfying results.

Mots clés: Physical Sciences

F Gonzalez Contreras, Pedro Rosado. AN ALTERNATIVE METHOD TO TOLERANCE TRANSFER FOR PARTS WITH 2D BLUEPRINT. International Journal of Production Research, 2007, 45 (22), pp.5309-5328. ⟨10.1080/00207540600898031⟩. ⟨hal-00512938⟩