Automatic Screw Machines

Automatic Screw Machines
اسم المؤلف
Douglas T. Hamilton and Franklin D. Jones
التاريخ
14 ديسمبر 2022
المشاهدات
314
التقييم
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Automatic Screw Machines
A Treatise on the Construction, Design, and Operation of Automatic Screw
Machines and Their Tool Equipment
By
Douglas T. Hamilton
Associate Editor of Machinery
AUTHOR OF ” AUTOMATIC SCREW MACHINE PRACTICE,” ” SHRAPNEL
SHELL MANUFACTURE,” ” MACHINE FORGING,” ” BOLT,
NUT, AND RIVET FORGING,” ETC.
AND
FRANKLIN D. JONES
ASSOCIATE EDITOR OF MACHINERY
AUTHOR OF ” TURNING AND BORING,” ” PLANING AND MILLING,”
GAGING TOOLS AND METHODS,” ETC.
CONTENTS
CHAPTER I
SCREW MACHINE CLASSIFICATION AND
DEVELOPMENT PAGES
Origin of the Term “Screw Machine” Distinction
between Automatic and Semi-automatic Machines General Features of Automatic Screw Machines . Classification
of Automatic Screw Machines Development of Singleand Multiple-spindle Types General Application of Automatic Screw Machines Advantages of Single- and Multiple-spindle Designs i-io
CHAPTER II
SINGLE-SPINDLE AUTOMATIC SCREW MACHINES
Brown & Sharpe Automatic Screw Machine Cleveland Automatic Screw Machine Gridley Single-spindle
Automatic Turret Lathe Chicago Automatic Screw
Machine 11-38
CHAPTER III
MULTIPLE-SPINDLE AUTOMATIC SCREW
MACHINES
Acme Four-spindle Automatic Screw Machine Davenport Five-spindle Automatic Screw Machine Hayden
Five-spindle Automatic Screw Machine Gridley Fourspindle Automatic Screw Machine New Britain Sixspindle Automatic Screw Machine 39-83
CHAPTER IV
AUTOMATIC SCREW MACHINE TOOL
EQUIPMENT
Circular Forming and Cutting-off Tools Tool-holders
foi Flat Forming Tools Box-tools Methods of Applying Box-tool Cutters Work Supports for Box-toolsViii CONTENTS
Hollow Mills Centering and Facing Tools Drills and
Drill-holders Counterboring Tools Reamers and Reamerholders Swing Tools for Turning and Recessing Shaving
Tools Dies for Screw Machine Work Die-holders
Taps for Screw Machines Knurling Tools 84-147
CHAPTER V
ADJUSTING OR SETTING-UP AUTOMATIC
SCREW MACHINES
Setting-up the Brown & Sharpe Machine Adjustments
on the Cleveland Automatic Method of
Setting-up the
Acme
Multiple-spindle Machine Setting-up the Davenport Multiple-spindle Automatic 148-196
CHAPTER VI
ATTACHMENTS FOR AUTOMATIC SCREW
MACHINES
Screw Slotting Attachment Slotting and Slabbing
Attachment Index
Drilling Attachment Cross-drilling
Attachments Turret Drilling Attachment Burring Attachment Tap and Die Revolving Attachment Accelerated Reaming Attachment Drilling and Milling Attachment Vertical-spindle Milling Attachment End-milling
or Slotting Attachment Attachment for Forming Squares
and Hexagons Attachment for Robbing Worms and
Spiral Gears Magazine Feeding Attachments 197-223
CHAPTER VII
DESIGNING SCREW MACHINE CAMS
Effect of Cutting Speed on Cam Design General
Method of Designing Cams Laying Out Cams for a Specific Operation Development of Cam Lobe for Controlling Movement of Threading Die Allowance for Tool
Clearance Use of Cam-lever Templets Laying Out
Cams for
Recessing Cam Rise for Drilling Designing
Cams for Deep-hole Drilling 224-257CONTENTS IX
CHAPTER VIII
OPERATIONS ON SINGLE- AND MULTIPLESPINDLE SCREW MACHINES
Examples of Forming Operations Recessing Drilling and Counterboring from Cross-slide Making Watch
Parts in Screw Machine Examples of Work on the Cleveland Automatic Operations on Acme Multiple-spindle
Machine Use of Screw Machine for Producing and
Assembling Parts Thread Rolling in the Screw Machine

  • Different Types of Tools for Thread Rolling Cutting
    Helical Gears in Screw Machine Speeds and Feeds for
    Screw Machine Operation 258-335
    INDEX
    ACCELERATING type of reaming
    attachment, 207
    Accelerating type of cross-drilling attachment, 202
    Acme accelerating reaming attachment,
    207
    Acme
    cross-drilling attachment, 202
    Acme
    milling attachments, 209
    Acme multiple-spindle automatic, 39
    adjustment of, 170
    camshaft, 44
    camshaft speed-changing mechanism,
    45
    feeding stock through spindle, 51
    general description, 39
    indexing mechanism, 49
    mechanism for threading, 52
    operation of cross-slides, 48
    operation of spindle chuck, 50
    operations on, 290
    speed of main driving shaft, 47
    spindle-driving mechanism, 43
    standard tool positions, 41
    Acme over-cut box-tools, 98
    Acme
    thread-rolling tool, 322
    Adjustment of automatic screw machines, 148
    Allowances for reaming, 125
    Allowances for shaving cuts, 130, 131
    Aluminum, use of roller supports in
    turning, 109
    Angle of centering tool, 115
    Angles, cutting, for box-tool cutters,
    in
    Application of automatic screw machines, general, 7
    Assembling parts in automatic screw
    machine, 304
    Attachment, for hobbing worm and
    spiral gears, 215
    Attachment for
    self-opening dies, 137
    for
    drilling, 200
    for forming squares and hexagons,
    213
    for milling, 209
    for screw slotting, 197
    magazine feeding, 219
    Automatic, application of term, 2
    Automatic screw machines, adjustment, 148
    advantages of single- and multiplespindle designs, 8
    classification, 4
    development of multiple-spindle type,
    6
    development of single-spindle type, 5
    general features, 3
    multiple-spindle designs, 39
    single-spindle designs, n
    BACK-SLIDE cam, method of laying out, 241
    Boring and recessing tools, 125
    Box-tool
    cutters, cutting angles, i T i
    holding and adjusting, 106
    methods of applying, 104
    radial and tangential positions for,
    104
    size of
    steel, 113
    Box-tools, 94
    over-cut type, 98
    spring-releasing type, 99
    setting, on Acme machine, 178
    taper turning, 101
    Box-tool work
    supports, 108
    holding and adjusting, 109
    position relative to cutter, 112
    Brass, speeds and feeds for, 332
    Brown & Sharpe burring attachment,
    205338 INDEX
    Brown & Sharpe cross-drilling attachment, 201
    Brown & Sharpe index drilling attachment, 200
    Brown & Sharpe screw machines, deflector for chips, 1 8
    general method of setting up, 158
    general description, n
    operation of cross-slide, 15
    operation of turret-slide, 16
    reversal of spindle for threading, 18
    sample record of cam and tool equipment, 159
    spindle speed changes, 18
    stock-feeding and chuck-operating
    mechanism, 15
    Brown & Sharpe screw slotting attachment, 197
    Brown & Sharpe tap and die revolving
    attachment, 206
    Brown & Sharpe taper-turning tool, 102
    Brown & Sharpe turret .drilling attachment, 205
    Burring attachment, 205
    blanks, Brown & Sharpe,
    234
    Cam circumference, proportioning, 233
    Cam
    design, allowance for tool clearance, 247
    effect of cutting speed on, 225
    general procedure, 225
    lobe for thread cutting, 243
    rise for
    drilling, 255
    Cams for making a screw, 227
    Cams for
    recessing, laying out, 253
    Cams for screw machines, designing, 224
    Cams, function of lead, front-slide
    and
    back-slide, on B. & S. Machine,
    224
    Cam-lever
    templets, use of, 250
    Cast
    iron, use of roller supports in
    turning, 109
    Centering and facing tools, 114
    Centering-tool holder, 115
    Centering tool, included angle of point,
    “5
    Centering tools and drills, setting, 154
    Change-gears, table of No. oo Brown &
    Sharpe machine, 233
    Chicago screw machine, general description, 35
    camshaft and main
    cam, 36
    chuck feeding mechanism, 36
    feeding movements for tools, 38
    method of cutting threads, 37
    operation of cross-slides, 37
    turret mechanism, 36
    Chips, measurement of, to determine
    feed, 329
    Circular forming and cutting-off tools,
    holder
    for, 88
    setting, 149
    Circular forming tools, methods of
    applying, 85, 89
    Clearance for circular
    tools, 90
    Clearance for tools in laying out cams,
    247
    Cleveland automatic, adjustment of,
    161
    chuck-operating mechanism, 22
    examples of work on, 281
    feed-regulating drum, 29
    general description, 20
    operation of cross-slide, 28
    spindle-driving mechanism, 22
    stock-feeding mechanism, 25
    turret and turret-slide, 26
    variable feeding mechanism, 28
    Cleveland independent cutting-off attachment, 211
    Cleveland magazine feeding attachments, 219
    Cleveland silent die-holder, 135
    Cleveland slotting and slabbing attachment, 199
    Cleveland thread-rolling attachment,
    321
    Compensating stops for multiple-spindle
    machines, 60
    Cone-point turning in screw machine,
    274
    Counterbores, amount of taper for, 120
    holders, 123
    location of cutting edge, 120
    reasons for defective operation, 119INDEX
    339
    Counterbores and reamers, setting, 154
    Counterboring and drilling from crossslide, 266
    Counterboring and reaming feeds, 335
    Counterboring tools, 119, 122
    Cross-drilling attachment, 201
    Cross-drilling attachment of opposed
    spindle type, 204
    Cross-drilling, example of work requiring, 294
    Cutters for box-tools, 104
    cutting angles, in
    holding and adjusting, 106
    position relative to work supports,
    112
    size of steel, 113
    Cutting-off and forming tools, rake of,
    93
    setting on Acme machine, 177
    Cutting-off attachment, Cleveland, 211
    Cutting-off tool-holder, universal, 91
    Cutting-off tools, 92
    inclination of cutting edge, 229
    thickness of blade, 93
    DAVENPORT multiple-spindle automatic, 55
    cam equipment for, 192
    compensating stops, 60
    cross-slides and swinging arms, 58
    driving mechanism for camshaft, 58
    general description, 55
    indexing the spindle head, 60
    method of cutting thread, 62
    method of driving spindles, 55
    operation of tool spindles, 56
    sample record of operations, 193
    setting-up, 189
    speeds and feeds recommended, 63
    Deep-hole drilling, designing cam for,
    257
    Die- and
    tap-holder, telescopic, 136
    Die and
    tap revolving attachment, 206
    Die-holders, 133
    Cleveland silent type, 135
    releasing, 134
    Dies and
    taps, setting, 155
    Dies, attachment for self-opening, 137
    Dies for screw machine work, 132
    Drill-holder, high-speed, 118
    Drill-holders for screw machines, 118
    Drilling and Counterboring from crossslide, 266
    Drilling and milling attachment, Acme,
    209
    Drilling attachment, cross-, 201
    index, 200
    Drilling, feeds for, 334
    laying out cams for, 255
    Drill rod, speeds and feeds for, 333
    Drills and centering tools, setting, 154
    Drills, flat, 122
    for screw machine work, 116
    END-MILLING or slotting attachment, 211
    facing and centering tools, 114
    pEED, determining, by measuring
    chips, 329
    for thread
    rolling, 333
    Feeding attachments, magazine, 219
    Feeds and
    speeds, 330
    for different tools and
    materials, 331
    Feeds, for Counterboring and reaming,
    335
    for
    drilling, 334
    Flat forming tool-holders, 90
    Flutes, number in taps, 139
    Forming and cutting-off tools, rake of,
    93
    setting, on Acme machine, 177
    Forming operations, examples of, 260
    Forming tools, methods of applying,
    85,89
    tool-holders for
    flat, 90
    Front-slide
    cam, method of laying out,
    242
    gears, helical or spiral, cutting in
    screw machine, 323
    (~^UN screw iron, speeds and feeds for,
    332
    Gridley multiple-spindle automatic, 71
    camshaft and
    cams, 74
    feeding movements, 73340 INDEX
    Gridley multiple-spindle automatic,
    general description, 71
    idle movements, 73
    method of cutting threads, 76
    tool-slide, 73
    Gridley single-spindle automatic, application of motor drive, 35
    arrangement of cams, 33
    arrangement of turret, 30
    general description, 30
    operation of forming and cutting-off
    tools, 33
    fjAYDEN multiple-spindle automatic, 64
    adjustable cams for tool spindles and
    cross-slides, 68
    chuck-closing mechanism, 66
    general description, 64
    operation of master cam, 66
    thread cutting operations, 71
    time required for making one piece,
    69
    Helical
    gears, cutting in screw machine,
    323
    Hexagon and square forming attachment, 213
    Holders, for centering tools, 115
    for circular forming and cutting-off
    tools, 88
    for counterbores, 123
    for flat forming tools, 90
    for
    reamers, 127
    Hollow
    mills, 113
    Hollow mills or
    box-tools, setting, 153
    Hollow roughing mill, 98
    INDEX drilling attachment, 200
    KNURL-HOLDER, double type for
    cross-slide, 143
    opening and closing type, 143
    Knurling tools, 140
    Knurls, concave, 145
    different methods of applying, 144
    spiral, 146
    straight, 145
    Knurl teeth, angles for different materials, 145
    calculating depth of, 145
    LEAD CAM, function of, on Brown
    & Sharpe machine, 224
    method of laying out, for Brown &
    Sharpe machine, 236
    MACHINE steel, speeds and feeds
    for, 333
    Magazine feeding attachments, 219
    Milling attachments, Acme, 209
    Multiple- and single-spindle designs,
    relative advantages, 8
    Multiple-spindle screw machine development, 6
    Multiple-spindle screw machines, 39
    BRITAIN
    multiple-spindle
    screw machine, 76
    indexing mechanism, 80
    spindle construction, 78
    thread cutting mechanism, 82
    tool
    slide, 79
    Non-releasing type of die-holder, 133
    OPERATIONS on screw machines,
    miscellaneous, 258
    pointing end of work, 259
    PRODUCTION rate, calculating for
    Acme machine, 172
    RAISING block for swing tools,
    128
    methods of
    setting on Brown &
    Sharpe machines, 157
    Reamer
    holders, 127
    Reamers and counterbores, setting, 154
    Reamers for screw machine work, 125
    Reamers, taper of, 125
    Reaming allowances, 125
    Reaming and counterboring feeds, 335
    Reaming attachment, accelerated, 207
    Recessing and boring tools, 125
    Recessing, laying out cams for, 253
    Recessing operation, 265INDEX 341
    Recessing swing tools, 129
    Record of cam and tool equipment on
    Brown & Sharpe machine, 159
    Record of operations on Davenport
    machine, 193
    Releasing die-holder, 134
    Roller supports for box-tools, 95, 96,
    109, in
    Rolling threads in screw machine, 314
    Roller type of steadyrest, 113
    Rotary magazine attachment, 221
    gCREW MACHINE, adjustment,
    148
    cams, designing, 224
    classification, 4
    development, 5
    general features, 3
    multiple-spindle designs, 39
    operations, miscellaneous, 258
    origin of term, i
    relative advantages of single- and
    multiple-spindle designs, 8
    single-spindle designs, n
    use
    of, for machining and assembling, 304
    Screw slotting attachments, 197
    Setting-up automatic screw machines,
    148
    Shaving operation, allowances for, 130,
    131
    Shaving tools for screw machines, 130
    Single- and multiple-spindle designs,
    relative advantages, 8
    Single-spindle screw machine development, 5
    Slab milling attachments, 209
    Slotting and slabbing attachment, 199
    Speeds and feeds, 330
    for different tools and materials, 331
    Spiral gear-hobbing attachment, 215
    Spiral gears, cutting in screw machine,
    323
    Spiral knurls, determining lead of teeth,
    147
    determining number of teeth around
    circumference, 146
    Spring-releasing box-tools, 99
    Spring screw threading dies, making,
    132
    Square and hexagon forming attachment, 213
    Steadyrest of roller type, 1 13
    Steel for box-tool
    cutters, size of, 113
    Steel for box-tool
    supports, 109
    Stop for stock, setting, 152
    Supports, work, for box-tools, 108
    holding and adjusting, 109
    Swing tools, for turning, 128
    methods of setting raising block for
    operating, 157
    raising block for, 128
    recessing, 129
    setting, 156
    TAP- and die-holder, telescopic, 136 .
    Tap and die revolving attachment, 206
    Taps and dies, setting, 155
    Taps, chamfer for different pitches, 139
    cutters for fluting, 139
    for automatic screw machines, 138
    for Norway iron and machine steel,
    140
    number of flutes
    for, 139
    width of
    lands, 139
    Telescopic die- and tap-holder, 136
    Templet for dividing cam circumference, 238
    Templet for laying out screw machine
    cams, 235
    Templets, use of cam-lever type, 250
    Thread
    cutting, development of cam
    lobe
    for, 243
    dies for screw machines, 132
    number of revolutions
    for, 229
    on Acme machine, 181
    on Davenport multiple-spindle automatic, 192
    on Gridley multiple-spindle automatic, 76
    on Hayden multiple-spindle automatic, 71
    on New Britain multiple-spindle
    automatic, 82
    reversal of spindle for, in B. & S.
    machine, 18342 INDEX
    Threading-die holders, 133
    Threading dies, methods of making
    spring screw type, 132
    Thread
    rolling, Acme type of holder
    for, 322
    attachment, Cleveland, 321
    by means of swing tool, 320
    calculating blank diameter, 315
    Cleveland attachment for, 321
    feeds
    for, 333
    holder for passing roll over work, 319
    holder for passing roll under work,
    320
    inclination of thread on
    roll, 315
    in screw machines, 314
    preparation of work for, 318
    shape of thread on roll, 316
    size of thread
    roll, 317
    steel for thread rolls applied to steel,
    3i5
    Thread
    roll, size of, 317
    Tilting magazine attachment, 219
    rotary type of, 222
    Tool
    clearance, allowance for, in cam
    design, 247
    Tool equipment for screw machines, 84
    Tool-holders for boring and recessing
    tools, 125
    Tool-holder, universal cutting-off, 91
    Turret drilling attachment, 205
    UNIVERSAL cross-slide knurling
    tool, 141
    Universal
    cutting-off tool-holder, 91
    VERTICAL magazine feeding attachment, 220
    parts, making, in screw
    machine, 271
    Worm
    gear bobbing attachment, 215

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