There are 3 T slots on milling machine workbench,in the middle of the slot is benchmark , called the central t-slot, T slot on both sides of the groove is fixed . Benchmark slot’s accuracy higher than fixed groove.
- The T slot milling method
Milling T slot according to the first line correction workpiece position, make the t-slot and workbench feed in the same direction, the position of the workpiece on the plane with a dial indicator calibration, make it parallel with milling machine working mesa, so as to ensure the t-slot milling depth is consistent, then the clamping workpiece, milling according to the following steps:
(1) with vertical milling cutter on the vertical milling machine or use the side and face milling cutter on the horizontal milling machine milling 18 h7mm a wide and deep is less than 30 mm (29.5 mm) of the first rectangular slot.
(2) remove the vertical milling cutter on the vertical milling machine, fitted with a diameter of 32 mm, 15 mm wide t-slot milling cutter. Then adjust the t-slot milling cutter face to the deep 30 mm, and then start the milling T slot.
(3) if T slot in the rabbet have chamfer, need to remove the t-slot milling cutter, Angle cutter milling chamfering. , should be paid attention to when milling chamfering are balanced on both sides.
(4) with vernier caliper check each size, then use the same way the second and third the t-slot milling.
Such a method for processing a very cost processing hours, in order to improve the production efficiency, can use three combination milling cutter blade on three sides all rectangular slot milling first, and then use the t-slot milling T slot.
In addition, the H7 for milling machine processing precision, it is very difficult. By grinding machine should be set aside processing capacity, the processing.