Bridgeport J-Head Series, Manual

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Hoffman Mechatronics Bridgeport Mill J1 Rebuild
Table of Contents
1.0 Document Information ..................................................................................................... 6
1.1 Disclaimer .......................................................................................................................................... 6
1.2 Notes from the Author........................................................................................................................ 6
1.3 Copyright............................................................................................................................................ 6
1.4 Document Organization ..................................................................................................................... 7
1.5 Change History .................................................................................................................................. 7
1.6 Dedications and Acknowledgements................................................................................................. 7
2.0 Mill Overview..................................................................................................................... 8
2.1 Mill Description .................................................................................................................................. 8
2.2 Repair Estimates ............................................................................................................................... 8
2.3 Why would I do this?.......................................................................................................................... 9
2.4 Isn’t it too old?.................................................................................................................................... 9
2.5 Disassembly/Reassembly Suggestions........................................................................................... 10
3.0 Motor and Drive Section ................................................................................................ 12
3.1 Motor Removal, Inspection, & Reassembly (RIR) ........................................................................... 12
3.1.1 Motor Removal .......................................................................................................................... 12
3.1.2 Motor Inspection........................................................................................................................ 12
3.1.3 Motor Reassembly .................................................................................................................... 13
3.2 Motor Replacement ......................................................................................................................... 13
3.3 Drive Housing Section ..................................................................................................................... 14
3.3.1 Drive Housing Removal ............................................................................................................ 14
3.3.2 Drive Housing Inspection .......................................................................................................... 16
3.3.3 Drive Housing Reassembly....................................................................................................... 17
4.0 J-Head Section................................................................................................................ 18
4.1 J-Head R & R................................................................................................................................... 19
4.1.1 J-Head Removal........................................................................................................................ 19
4.1.2 J-Head Reassembly.................................................................................................................. 20
4.2 Quill Pinion Shaft RIR ...................................................................................................................... 20
4.2.1 Quill Pinion Shaft Removal ....................................................................................................... 20
4.2.2 Quill Pinion Shaft Inspection ..................................................................................................... 21
4.2.3 Quill Pinion Shaft Reassembly.................................................................................................. 22
4.3 Quill Stop and Quill Indicator RIR.................................................................................................... 22
4.3.1 Quill Stop and Quill Indicator Removal ..................................................................................... 22
4.3.2 Quill Stop Inspection ................................................................................................................. 23
4.3.3 Quill Stop Reassembly.............................................................................................................. 23
4.4 Quill and Spindle Removal .............................................................................................................. 23
4.4.1 Quill and Spindle Inspection...................................................................................................... 24
4.4.2 Spindle Bearing Reassembly/Replacement.............................................................................. 25
4.5 On Machine Spindle Extraction ....................................................................................................... 28
4.6 Feed Driving Gear Assembly RIR ................................................................................................... 28
4.6.1 Feed Driving Gear Assembly Removal ..................................................................................... 29
4.6.2 Feed Driving Gear Assembly Inspection................................................................................... 30
4.6.3 Feed Driving Gear Assembly Reassembly ............................................................................... 30
4.7 Feed Reverse Gear Assembly RIR ................................................................................................. 30
4.7.1 Feed Reverse Gear Assembly Removal................................................................................... 30
5.0 Turret Section ................................................................................................................. 31
5.1 Ram Adapter RIR ............................................................................................................................ 32
5.1.1 Ram Adapter Removal.............................................................................................................. 32
5.1.2 Ram Adapter Inspection............................................................................................................ 32
BPJ1RBLD_002 1
January 31, 201111