What should be considered during the first setup on a CNC vertical machining center?
1. Select appropriate cutting parameters.
2. Select the appropriate cutting tools.
(1) For rough turning, select tools with high strength and durability to meet the requirements of large depth of cut and high feed rates;
(2) For finish turning, select tools with high precision and durability to ensure machining accuracy;
(3) To reduce tool change time and facilitate tool setting, machine-mounted tools and machine-mounted inserts should be used whenever possible.
3. Select the appropriate fixtures
(1) Use universal fixtures to clamp workpieces whenever possible, and avoid the use of specialized fixtures;
(2) Align the part’s positioning reference points to minimize positioning errors.
4. Determine the machining path for the vertical machining center
A machining path refers to the trajectory and direction of the tool’s movement relative to the part during the machining process on a CNC machine tool;
(1) It should ensure compliance with machining accuracy and surface roughness requirements;
(2) The machining path should be kept as short as possible to reduce tool idle travel time.
5. Relationship Between CNC Machine Tool Machining Paths and Machining Allowances
Currently, since CNC machine tools have not yet become widely adopted, excessive allowances on blanks—particularly those containing hard-skin layers from forging or casting—should generally be machined on conventional lathes. If machining on a CNC machine tool is necessary, care must be taken to arrange the program flexibly.
6. Key Points for Fixture Installation
Currently, hydraulic chucks are connected to hydraulic clamping cylinders via tie rods. The key steps for clamping a hydraulic chuck are as follows: First, use a wrench to remove the nut on the hydraulic cylinder, remove the tie rod, and pull it out from the rear end of the spindle. Then, use a wrench to remove the chuck retaining screw, after which the chuck can be removed.
