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Dimensions of Screw Elements with Clearances

Mirroring point K on the bisector 5, we obtain point N. The angle between line 9, which connects point N and center M, and the line of symmetry 2 corresponds to the root angle. The profile between the lines of symmetry 1 and 2 is made up of the following arcs Between line 1 and line 7 is an arc with an external diameter, i. e a portion of circle 3. It bends sharply at point K and becomes an arc that is part of circle 7. This in turn passes tangentially over at point N into an arc that is part of circle 4. [Pg.95]

The design of the profile can fail if we make the internal diameter too small. This is the case if point K is outside the lines of symmetry, i. e., the screw can no longer reach the external diameter. [Pg.95]

A pair of screw elements is conveying if the flat profiles are extended into the third dimension by helical rotation. In this case, we speak of screw elements. The pitch T of the element is another important dimension here. In today s modular screws, individual elements each have a constant pitch and a pitch variation is achieved by using different types of element. [Pg.95]

All technical screw elements have clearances between the screws and between the screw tip and barrel wall for the following reasons  [Pg.95]

Two more dimensions are added to the geometric parameters of screws s (clearance between the two screws) and 8 (clearance between wall and screws). [Pg.96]


See other pages where Dimensions of Screw Elements with Clearances is mentioned: [Pg.95]    [Pg.95]    [Pg.97]   


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