| 摘要 |
PURPOSE: To simply and surely measure the draw-in force by operating a draw-in device after a measuring device is installed, and measuring the draw-in force applied between the spindle tip part and a stopper by a pressure measuring device. CONSTITUTION: The device has a fit bolt 4 where a draw-in nipple 21 is screwed in one end thereof, and the diameter of the fit bolt 4 corresponds to the diameter of the cylindrical end part of a cone of a tool holder. A ring-like hydraulic pressure measuring cell 6 having a stopper positioning bush 5 and a pressure gauge 61 is fitted to the bolt 4, and a screw 41 where a nut 7 for forming a stopper is provided at the opposite side end part to the draw-in nipple 21. When the device is adjusted, the preparation for measurement is completed, a tool machine is stopped, and draw-in motion is caused, drawing force can be simply read by a pressure gauge 61. |
