Spatial position adjustable clamp for fixing mandible models of different sizes

A spatial position adjustable clamp for fixing mandible models of different sizes comprises a sliding adjusting mechanism and a rotary and up-down sliding adjusting mechanism, and is characterized inthat the sliding adjusting mechanism comprises lower sliding chutes (1), lower sliding blocks (2), upper sliding chutes (3), upper and lower sliding chute hexagon socket bolts (4), upper sliding blocks (5), upper sliding chute-stand column connecting bolts (6) and a stand column (7), wherein the lower sliding chutes (1) are fixed to the bottom of a testing machine; the upper sliding chutes (3) andthe lower sliding chutes (1) are connected through the two lower sliding blocks (2) clamped in the lower sliding chutes (1) in a cooperative mode and then are screwed and fixed through the upper andlower sliding chute hexagon socket bolts (4); and the upper sliding chutes (3) and the stand column (7) are connected through the upper sliding blocks (5) clamped in the upper sliding chutes (3) and then are screwed and fixed t