Name: _________________________                      Date _________________________

 

 

                Part # PS10A

                Part Desc: Multiple Lead 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.

                                                                                Use a split nut to prevent

                                                                                destroying the LH thread.

 

    20                        Lathe                                      Setup the cutting tool and 

                                                                                lathe to cut the lead of the

                                                                                threads. Be ready to answer

                                                                                questions concerning double

                                                                                thread cutting as specified in

                                                                                your text.

 

    30                        Instructor                              Have Instructor check setup

 

    40                        Lathe                                      Take a light trial cut and

                                                                                check the pitch with a

                                                                                screw pitch gage.

 

    50                        Lathe                                      Cut the first lead to the required pitch

                                                                                diameter using a thread pitch micrometer

                                                                                or other thread measuring device.

 

    60                        Lathe                                      Cut the second lead to the required pitch

                                                                                diameter using a thread pitch micrometer

                                                                                or other thread measuring device.

 

 

    70                        Lathe                                      Assure the thread accuracy using a

                                                                                thread ring gage if one is available.

 

    80                        Lathe                                      Deburr the part.

 

    90                        Bench                                     Inspect the part.

 

  100                        Instructor                              Turn in for grading.