Eyeglass lens processing apparatus and eyeglass lens processing program

A non-transitory storage medium having an eyeglass lens processing program stored thereon and readable by a processor of an eyeglass lens processing apparatus, the eyeglass lens processing program, when executed by the processor, causing the eyeglass lens processing apparatus to:

• when performing chamfering on an angular portion of an edge of an eyeglass lens which is finished by a finishing tool, set a chamfering angle which is an angle formed between a rotational center axis of a first rotational shaft which is configured to hold and rotate the eyeglass lens and a processing tool surface of a chamfering tool which is configured to perform chamfering on the angular portion of the edge of the eyeglass lens;
• acquire information regarding an edge surface shape of the eyeglass lens with respect to the first rotational shaft, the edge surface shape including a bevel and a portion to be chamfered;
• correct the chamfering angle based on the information regarding the edge surface shape which is acquired by the acquiring step;
• determine whether the bevel formed on the eyeglass lens would come into contact with the chamfering tool when performing said chamfering at said corrected chamfering angle and further correct the chamfering angle based on determining if it is determined that the bevel would come into contact with the chamfering tool;
• and
• control driving of an adjustment unit which is configured to adjust a relative angle between the first rotational shaft and a second rotational shaft to which the chamfering tool is attached so as to adjust the relative angle between the first rotational shaft and the second rotational shaft based on the chamfering angle which is corrected by the correcting step.