Name: _________________________                      Date _________________________

 

 

                Part # PS7D

                Part Desc: Acme Threads

                Quantity Req.: 1

 

PLEASE HAVE INSTRUCTOR INITIAL AND DATE AFTER REQUIRED OPERATIONS

 

                                                                                                          Instructor

Step #              Location                      Description                             Initials                   Date       

 

 

    10                        Lathe                                      Setup part between centers.

                                                                                Assure that the part runout

                                                                                is within tolerance.

 

    15                        Grinder                                   Grind an external Acme threading

                                                                                tool for  this job.

 

    20                        Lathe                                      Setup the cutting tool and 

                                                                                lathe to cut external Acme

                                                                                threads. Calculate the three

                                                                                wire thread measurement

                                                                                as specified in your text and

                                                                                information sheet.

 

    30                        Instructor                              Have Instructor check setup

                                                                                and measurement calculations.

                                                                               

    40                        Lathe                                      Take a light trial cut and

                                                                                check the pitch.

 

    50                        Lathe                                      Cut the thread to the required

                                                                                depth using the three wire

                                                                                measurement technique.

                                                                               

    60                        Lathe                                      Assure the thread accuracy using a

                                                                                thread ring gage if one is available.

 

    70                        Lathe                                      Deburr the part.

 

    80                        Bench                                     Inspect the part.

 

    90                        Instructor                              Turn in for grading.