TRAVERSE GEAR Russian patent published in 2007 - IPC G01B11/30 

FIELD: measuring technique.

SUBSTANCE: traverse gear comprises table, movable bridge, four pickups of linear movements along the X, Y₁, Y₂, and Z coordinates, and pickup of contacting with the probe mounted for permitting movements along the Z coordinate. Each pickup of the linear movements has measuring grid, recording head with carriage provided with indicating grid, and guiding member. The guiding member for all pickups of linear movements is made of two mutually perpendicular planes that are rigidly interconnected. One of the planes of the guiding member is a plane of the measuring grid with marks, and the second plane of the guiding member is made of a glass substrate. The pickup of contacting is made of a pickup of linear movements. The pickup of linear movements along the Z coordinate and the pickup of contacting have the common measuring grid and guiding member. The recording head of the contacting pickup is secured to the measuring grid of the pickup of linear movements along the Z coordinate. The probe is rigidly connected with the carriage of the contacting pickup. The carriage of the contacting pickup bears on the stop when it is in a bottom position. The stop is made of a ball secured to the area perpendicular to the face of the guiding member of the pickup of linear movements along the Z coordinate. The movable bridge is made of a glass channel.

EFFECT: enhanced precision and reduced weight.

1 dwg