Installing Punch And Stripper Into Punch Holder Assembly

1. Place stripper over end of punch. Punch point must protrude above face of stripper at least 0.156(3.97) more than the thickness of the work piece. Example: for 0.120(3.05) material, punch point must project from stripper face at least 0.276(7.01). FIG 1.

1. Wipe outside of punch holder with oily rag to remove any dirt and debris, and to apply an oily film to surface of holder.

2. Insert Marathon assembly into appropriate turret bore with punch oriented correctly to die.

3. Slowly, squirt several pumps of hydraulic oil from pump oiler into reservoir formed by punch receiver tang and punch holder body. FIG. 3.

1. Loosen drawbolt with appropriate allen wrench, turning until you hear a ‘click’ or until punch is fully disengaged from drawbolt. Use 1/4” allen wrench for B station, 3/8” for C-K stations.

2. Turn locking ring counterclockwise until it locks open, approximately 10 degrees. Stripper will unlock. Grip protruding punch end and lift punch and stripper out of punch holder. If there is resistance in removing the punch, tap strip-per face with small brass plug to break the punch loose.

The Marathon Plus™ Tooling System does NOT require shims to compensate the punch sharpening.IMPORTANT: For reliable slug free performance punch must penetrate die at least 0.100(2.54), 0.120(3.05) is ideal. Gaug-ing from the face of the stripper plate, the punch should be 0.020(0.51) to 0.040(1.02) below the surface when punch and stripper are assembled into the punch holder and drawbolt is tightened. This yields 0.120(3.05) penetration. Also, do not punch with the length adjustment all the way in. The punch must be adjusted 1 or 2 clicks out.Slide the spring loaded length adjustment button away from the tang, then rotate the tang until the tip of the punch is between 0.025(0.64) and 0.040(1.02) from the face of the stripper.

2. Turn locking ring on punch holder counterclockwise until it stops. It will click and stay open with relief notches in locking ring aligned with radial slots in punch holder body. FIG 2.

the drawbolt when being tightened (STEP 5.)4. Press firmly on stripper until locking ring snaps shut, rotating

clockwise about 10 degrees.5. Tighten draw bolt to hand tight only with wrench.6. Turn length adjustment OUT only by pushing down on button

and rotating tang head. If punch hits a binding point, turn punch head to point of most resistance. Loosen and re-tighten draw bolt. This should center punch in tang assembly. You may have to repeat this more than once to insure best performance of length adjustment.

7. Using torque fixture # MATE01293, torque punch to 300 in-lb, 25 ft-lb, or 34Nm for B station and 900 in-lb, 75 ft-lb, or 102Nm for larger stations. Re-check function of length adjust-ment. If further binding occurs, repeat steps 5 and 6.

Installing MARATHON PLUS™ Assembly into Turret

Removing Punch and Stripper From Punch Holder Assembly

NOTE: Mate recommends using MATE01293 Marathon Plus™ Punch Draw Bolt Torque Fixture.

Punch Length Adjustment

Turn locking ring counter clock-wise to stop (bottom view of punch holder)

Stripper plate depresses release pin causing locking ring to rotate clockwise to lock position (bottom view of punch holder)

Locking Ring inRELEASE Position

Locking Ring in LOCK position

Reliefs in locking ring

Locator slots in punch holder

FIG. 2

Release pin

• Turn the tang clockwise to extend the punch out of the holder. Continuing to rotate the punch out will disconnect platen and punch from the tang. If this happens, simply turn it back on.

• Turn the tang counter-clockwise to retract the punch into the holder. • Each click of the tang is 0.005(0.12)

Length Adjustment ButtonOil ReservoirDrawbolt

FIG. 3

Locking Ring

Stripper Lead0.020-0040(0.51-1.02)

Stripper PlatePunch Face

NOTE:1. The length position of the stripper is

constant, making it an excellent gage for setting punch length.

2. A stripper lead of 0.020-0.040(0.51-1.02) will yield a die penetration of about 0.120(3.05) - ideal for Slug Free® die performance.

Tang

3. Insert punch and stripper into punch holder. SHAPES: the four lugs projecting from inner face of stripper must engage the radial slots which keep it in proper orientation to the die. ROUNDS: pin projecting from punch collar must engage ra-dial slot in punch holder to keep the punch from turning with

This dimension must be at least 0.156(3.96) greater than thickness of material to be punched

0.125(3.18) diameter pin should be installed in ROUND punches only

FIG. 1

Dimensions in Inches(millimeters) ©2012 Mate Precision Tooling Inc. mate.comThe Mate Logo is a registered trademark of Mate Precision Tooling Inc. in USA, Canada, China, Germany, India, Sweden, and U.K.MARATHON is a registered trademarks of Mate Precision Tooling Inc. MARATHON PLUS is a trademark of Mate Precision Tooling Inc. LIT00573 Rev D

Mate Precision Tooling • 1295 Lund Boulevard • Anoka, Minnesota 55303 USA • Phone 763.421.0230 • 800.328.4492 • Fax 763.421.0285 • 800.541.0285

MARATHON PLUS™ Fully Guided Punching SystemINSTALLATION INSTRUCTIONS

LIT00573_RevD_Marathon_Plus_Instr.indd 1 6/4/2012 8:13:47 AM

6. Remove punch receiver/tang from assembly and set aside for cleaning and further inspection.

7. Remove punch holder body from post and turn it upside down to dump out the disc springs.

8. Inspect disc springs for small cracks near inside diameter.If cracks are present, discard disc springs and replace them. Disc springs nearest punch receiver/tang are most likely to fatigue and crack first. Under normal operating conditions with material thicknesses less than 0.100(2.54), the springs should last for millions of cycles. Heavier material will cause greater deflection and shorten spring life.

9. Wash all dirt and debris away from tang, springs and punch holder body with clean oil or solvent. Wash lock ring area of punch holder body with clean oil.

10. Reassemble reversing the disassembly procedure, be sure disc springs are installed in proper alternating sequence. FIG 7. Quantity, size and part number of springs used in Marathon punch holder assemblies are expressed in TABLE I. Exert inward pressure on the layered retaining ring while winding it in.

11. Use plenty of oil to lubricate and inhibit corrosion.

MARATHON PLUS™ Fully Guided Punching SystemMAINTENANCE INSTRUCTIONS

Your Marathon punch holder assembly requires very little routine maintenance.

The punch-receiver/tang should be disassembled from the punch holder body every few months for the purpose of inspecting the springs for fatigue and to clean and remove any punching debris from inside the unit. Disassembly of the unit is really accomplished using the maintenance fixture, FIG 4. (Part No. FXAR0000)

1. Remove punch and stripper, see REMOVING PUNCH AND STRIPPER FROM PUNCH HOLDER ASSEMBLY.

2. Place the Marathon holder over the appropriate post of the maintenance fixture. Use post #1 with collar for B station, post #2 for C-D stations and post #2 with adaptor for E-K stations.

3. Hand tighten the drawbolt. Use helper bar to tighten two full turns PAST hand tighten. This action will force the punch receiver/tang downward until it no longer contacts retaining ring. FIG 5.

4. Use a screwdriver to wedge tab end of retaining ring out of the groove in the punch holder body. Wedge further and twist to lift the ring so it can be removed in a spiral. FIG 6.

5. Loosen and turn drawbolt until it disengages from the fixture post.

MARATHON® Assembly Maintenance

FIG. 4 - Maintenance Fixture

Lifter Cap (Auto Index)

“C” Washer (Auto Index)

B Station FixturePost #1 plusCollar (not shown)

Adaptor E-K Station

Helper Bar

C-D Station Fixture Post #2

Base Plate

Fixture Post C-D Station

E-K Adaptor

Drawbolt

RetainingRing

PunchReceiver/Tang

Punch Holder Body

The drawbolt pulls punch receiver/tang assembly down.

FIG. 6

FIG. 5

MARATHON® Maintenance Accessories

Crown to Crown

Spring must be placed alternatively dish to dish and crown to crown

Dish to Dish

The lowest spring must be installed Dish(concave) side down

FIG. 7

Accessories for maintenance Fixture

• Marathon Plus™ “B” Collar Part No.; MATE01143* • Marathon “C” Washer Part No.: FXWR000 • Marathon Lifter Cap Part No.: FXCR0000

When disassembling Marathon auto index punch holders for inspection and maintenance, there is the additional issue of the lifter assemblies. These are not contained by the punch receiver/tang and exert upward pressure on the retaining ring, which is to be removed. The Marathon “C” washer and lifter cap neutralizes this pressure and allows for easier removal of the retaining ring. *Included with FXAR0000 sold after April 2008

©2012 Mate Precision Tooling Inc. Dimensions in inches(millimeters) mate.com Mate Precision Tooling • 1295 Lund Boulevard • Anoka, Minnesota 55303 USA • Phone 763.421.0230 • 800.328.4492 • Fax 763.421.0285 • 800.541.0285

TABLE ISpring Part Outer

Station Quantity Number DiameterB 20 MIS61305 1.565(39.62)

C/D 12 MIS61321 2.595(65.78)E/F 10 MIS61356 3.925(99.56)

F Varistation 10 MATE01121 4.1717(105.96)G/H 10 MIS61372 4.385(111.25)

J 8 MIS61399 5.065(128.52)K 6 MIS61428 5.835(148.08)

LIT00573_RevD_Marathon_Plus_Instr.indd 2 6/4/2012 8:13:48 AM