Requirements of Wuxi CNC parts processing

Part materials, single piece production. The part blank has been machined to size.

Selected equipment: Machining Center

2、 Preparatory work

Complete relevant preparations before machining, including process analysis and process route design, tool and fixture selection, programming, etc.

3、 Operation steps and contents

1. Start the machine and manually return each coordinate axis to the origin of the machine tool

2. Tool preparation

Select according to processing requirements Φ 20 end mills Φ 5 center drill Φ 8 twist drills, one for each, and then clamp with spring collet and knife handle Φ 20 end milling cutter, the tool number is set to T01, and it is clamped with drill chuck and tool handle Φ 5 center drill Φ 8 twist drill, the tool number is set to T02 and T03, the edge finder of the tool setting tool is installed on the tool handle of the spring collet, and the tool number is set to T04.

3. Put the tool handle with clamped tool into the tool magazine manually, i.e

1) Enter "T01 M06" to execute

2) Manually install the T01 tool onto the spindle

3) Put T02, T03 and T04 into the magazine in sequence according to the above steps

4. Clean the workbench, install the fixture and workpiece, clean the flat vice, install it on the clean workbench, align and level the vice through the dial indicator, and then install the workpiece on the vice.

5. Set the tool, determine and input the workpiece coordinate system parameters

1) Set the tool with the edge finder, determine the zero deviation value in X and Y directions, and set the zero deviation value in X and Y directions

Input into the workpiece coordinate system g54, and the z-direction zero offset value in g54 is 0;

2) the Z axis setter is placed on the upper surface of the workpiece, and 1 cutter is mounted on the upper part of the workpiece to install the spindle. With this tool, the Z of the workpiece coordinate system is determined to zero value, and the Z is shifted to the zero offset value to the corresponding length compensation code of the machine tool. The "+" and "-" numbers are determined by G43 and G44 in the program, for example, the length compensation instruction in the program is G43. Then input the z-direction zero deviation value of "-" into the corresponding length compensation code of the machine tool;

3) Use the same procedure to input the z-direction zero deviation value of tool 2 and 3 into the corresponding length compensation code of the machine tool.

6. Input machining program

The machining program generated by the computer is transmitted to the memory of the NC system of the machine tool through the data line.

7. Debug machining program

The method of translating the workpiece coordinate system along + Z direction, that is, lifting the tool, is adopted for debugging.

1) Debug the main program and check whether the 3 tools complete the tool change action according to the process design;

2) Respectively debug the three subroutines corresponding to the three tools to check whether the tool action and machining path are correct.

8. Automatic machining

After confirming that the program is correct, restore the Z value of the workpiece coordinate system to the original value, turn the fast moving magnification switch and cutting feed magnification switch to low gear, press the NC start key to run the program and start machining. Observe the tool path and remaining moving distance during machining.

9. Remove the workpiece for inspection, select vernier caliper for size inspection, and conduct quality analysis after inspection.

10. Clean up the processing site

11. Shut down