The VTC80A vertical CNC lathe is a CNC machine tool used for metal processing. It can be used for processes such as taper, end face grooving and chamfering. The following is the method of grooving and chamfering the tapered end face on the VTC80 vertical CNC lathe:

1. Taper processing: VTC80A CNC lathe can realize taper processing by adjusting the angle of the tool holder and the position of the workpiece. First, the machining parameters are set through the CNC system, including tool feed rate, cutting depth and cutting speed. Then, clamp the workpiece on the spindle and make sure that the workpiece is perpendicular to the cutting face of the tool. Finally, start the NC program, and the machine tool will perform tapered cutting on the workpiece according to the preset path and parameters.
2. End face grooving: VTC80A CNC lathe can perform end face grooving by selecting the appropriate tool and cutting path. First, the information on the size and shape of the required groove is entered into the CNC system, and the appropriate tool is selected. Then, clamp the workpiece and adjust the position and feed rate of the grooving tool. Finally, start the CNC program and the machine tool will cut the required groove on the end face of the workpiece according to the preset path and parameters.
3. Chamfering processing: VTC80A CNC lathe can use appropriate tools and programming paths to perform chamfering processing. First, enter the dimensions and angle parameters of the chamfer and select a suitable chamfering tool. Then, the workpiece is clamped and the tool position and feed rate are adjusted. Finally, start the CNC program, and the machine tool will perform chamfering cutting on the workpiece according to the preset path and parameters.

When performing taper, end face grooving and chamfering processing, you need to pay attention to the following points:

1. Ensure the selection of tools and the rationality of tool paths to obtain the required processing effect and surface quality.
2. Set appropriate cutting parameters, including cutting speed, feed rate and cutting depth, to ensure processing quality and cutting efficiency.
3. Ensure the stability of workpiece clamping and correct workpiece positioning to avoid processing deviations and workpiece damage.

Specific operating steps and parameter settings may vary depending on the specific machine tool model, tool selection and processing requirements. It is recommended to refer to the user manual of the VTC80A CNC lathe and the operating guide provided by the manufacturer for detailed operating instructions and machining parameter recommendations.