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Section 1: Base Assembly

PRO4824_base

Vertical Workholding Machine Configuration

If you plan to set up your machine to accommodate vertical workholding, it is advised to reference our PRO CNC Vertical Workholding Instructions before beginning assembly of your machine's base. Take note of the leg gusset and table crossmember placement, as they can differ from those shown in this base assembly section. If you have questions regarding additional parts needed for the vertical workholding configuration, please Contact Us.


1.1 Table Leg Assembly

PRO4824_leg_001

Section Note

Skip to Section 1.3Section 1.3 if you are not using an Avid CNC leg kit


Parts and Tools Required

The following parts and tools will be used in Section 1.1

QTY Part/Description Packaged In
2 4080 Leg Crossmember Extrusion, 1250mm (49-1/4") Leg Extrusion
4 4080 Leg Extrusion, 750mm (29-1/2") Leg Extrusion
1 4080 Electronics Bar Extrusion, 790mm (31-1/8") Leg Extrusion
8 CRP813-01 Leg Gusset Kit Leg Gussets
2 CRP813-00-LEGSET-HW-BAG Base Table Kit
(12) 40 Series Anchor Fastener (Total QTY: 24)
(16) M8 x 30mm Socket Head Cap Screw (Total QTY: 32)
(24) M8 Roll-in T-Nut (Total QTY: 48)
(2) 7111 Foot Plate (Total QTY: 4)
(2) H172 Leveling Foot (Total QTY: 4)
(12) M8 x 14mm Hex Cap Screw (Total QTY: 24)
Remaining parts from this kit used in future sections
1 CRP813-00-ELCBAR-HW-BAG Base Table Kit
(4) 40 Series Anchor Fastener
(4) M8 x 30mm Socket Head Cap Screw
(4) M8 Roll-in T-Nut
Remaining parts from this kit used in future sections
  • Required Tools:
    • 6mm Ball-End Allen Wrench
    • Adjustable Wrench
    • Tape Measure
  • Recommended Additional Tools:
    • 6mm Hex Ball-End Power Bit
    • 13mm Combination Wrench

1.1.1 Anchor Fastener Assembly


1.1.1.1

PRO4824_leg_002
  • Thread the socket head cap screws into the T-Nuts through the anchor fasteners as indicated.

1.1.1.2

PRO4824_leg_003
  • Slide the anchor assemblies into the 1250mm (49-1/4") 4080 leg crossmember extrusion.

1.1.1.3

PRO4824_leg_004
  • Repeat the previous steps to install anchor fasteners on both sides of the 1250mm (49-1/4") leg crossmember extrusions.

1.1.1.4

PRO4824_leg_005
  • Repeat the previous steps to install anchor fasteners on one side of each 750mm (29-1/2") leg extrusion.

1.1.2 Leveling Feet Installation


1.1.2.1

PRO4824_leg_006
  • Install a foot assembly onto each 750mm (29-1/2") Leg Extrusion as indicated.

Assembly Note

It is recommended to first install the foot plate onto the extrusion before threading in the leveling foot.


1.1.2.2

PRO4824_leg_008
  • Repeat the previous steps for each of the 750mm (29-1/2") leg extrusions as indicated.

Assembly Note

Initially thread the leveling feet all of the way into the Foot Plate. After machine assembly, final adjustments will be made in the table leveling procedure


1.1.3 Leg Crossmember Assembly


1.1.3.1

PRO4824_leg_009
  • Use a section of 1250mm (49-1/4") leg crossmember extrusion to join two of the 750mm (29-1/2") leg extrusion sections.

1.1.3.2

PRO4824_leg_010
  • Position the leg crossmember 165mm (6-1/2") from the bottom of the leg as indicated.

1.1.3.3

PRO4824_leg_011
  • On each side of the leg crossmember tighten the anchor fasteners incrementally, alternating between fasteners.

Assembly Note

For tightening the anchor fasteners, an M6 ball-end allen wrench is required. An M6 ball-end driver attachment for a drill or impact driver can make assembly more efficient.


1.1.4 Leg Gussets Installation


1.1.4.1

PRO4824_leg_012
  • Install M8 bolts through the gusset as indicated, partially threading on the T-Nuts.

1.1.4.2

PRO4824_leg_013
  • Slide the gusset into the extrusion as indicated and partially tighten the M8 bolts.

Assembly Note

The top of the gusset should be roughly flush with the top of the extrusion.


1.1.4.3

PRO4848_leg_014
  • Install 3 additional gussets to the leg assembly as indicated.

Assembly Note

One gusset should be lowered to the dimension shown to accommodate the electronics mounting bar. The dimension shown is measured from the bottom of the foot plate to the bottom of the gusset.


1.1.4.4

PRO4848_leg_015
  • Repeat the previous steps to assemble the remaining gussets and extrusion sections in the indicated configuration.

Assembly Note

The lowered gussets should be on the same side as indicated.


1.1.5 Electronics Mounting Bar Installation


1.1.5.1

PRO4848_leg_016
  • On the indicated gussets, install M8 bolts and partially thread on the T-Nuts.

1.1.5.2

PRO4824_leg_017
  • Separate the leg assemblies to allow room for the 790mm (31-1/8") electronics bar extrusion to slide on the lower gussets.

1.1.5.3

PRO4824_leg_018
  • Slide the electronics bar onto the gussets, leaving space between it and the leg extrusions as indicated.

1.1.5.4

PRO4824_leg_019
  • Slide assembled anchor fasteners into the leg extrusions, positioning them above and below the electronics bar as indicated.

1.1.5.5

PRO4824_leg_020
  • With the electronics bar flush against the leg extrusion, insert the anchor fasteners.

1.1.5.6

PRO4824_leg_021
  • Complete this process on both sides of the electronics bar.
  • Tighten all electronics bar anchor fasteners.

1.2 Table Frame Assembly (with Leg Kit)

PRO4824_table_002

Parts and Tools Required

The following parts and tools will be used in Section 1.2

QTY Part/Description Packaged In
2 4080 Frame Extrusion, 950mm (37-3/8") Machine Kit Extrusion
3 4080 Crossmember Extrusion, 1250mm (49-1/4") Machine Kit Extrusion
1 40-3100-00 - 40 Series Short Double Anchor Assembly - 24 Base Table Kit
(24) 40 Series Anchor Fastener
(24) M8 x 30mm Socket Head Cap Screw
(12) CRP810-01 M8 Double Anchor Slide-in T-Nut
2 CRP813-00-LEGSET-HW-BAG Base Table Kit
(4) M8 x 14mm Hex Cap Screw (Total QTY: 8)
(4) M8 Roll-in T-Nut (Total QTY: 8)
  • Required Tools:
    • 6mm Ball-End Allen Wrench
    • Tape Measure
  • Recommended Additional Tools:
    • 6mm Hex Ball-End Power Bit
    • 13mm Combination Wrench
    • Dimensional Lumber (refer to Step 1.2.3.4Step 1.2.3.4)
    • (2) 24" Hand Trigger Clamp

1.2.1 Frame Extrusions Installation


1.2.1.1

PRO4824_table_001
  • Slide the two 950mm (37-3/8") 4080 frame extrusions onto the leg assemblies as indicated.

1.2.1.2

PRO4824_table_003
  • Bring the ends of the frame extrusion flush with the legs as indicated.
  • Fully tighten the anchor fasteners attaching the frame extrusions to the legs.

1.2.2 Table Crossmember Assembly


1.2.2.1

PRO4824_table_004
  • Thread the socket head cap screws into the anchor fasteners as indicated.

1.2.2.2

PRO4824_table_005
  • Slide the anchor assembly into the extrusion.

1.2.2.3

PRO4824_table_006
  • Loosely thread the double t-nuts onto the socket head cap screws as indicated.

1.2.2.4

PRO4824_table_007
  • Repeat the previous steps on both sides for all three of the crossmember extrusion pieces.

1.2.3 Table Crossmembers Installation


1.2.3.1

PRO4824_table_008
  • Slide the t-nuts into the frame extrusion as indicated.

1.2.3.2

PRO4824_table_009
  • Repeat the previous step for all crossmembers.

1.2.3.3

PRO4824_table_010
  • Position the the outer crossmembers flush with the ends of the frame extrusion.
  • Position the center crossmember 360mm (14-3/16") from the front crossmember (or 400mm (15-3/4") center to center) as indicated.

Assembly Note

Use dimensional lumber to help position the crossmembers, as shown in the following steps.


1.2.3.4

PRO4824_table_024
  • Cut two pieces of dimensional lumber (a 2x4 is recommended) to a length of 360mm (14-3/16").
  • Position this piece between the crossmembers as indicated.

1.2.3.5

PRO4824_table_025
  • With the cut piece of lumber flush against the frame extrusion, clamp the crossmembers together.

Assembly Note

Recommended clamps are 24" Hand Trigger Clamps available at your local hardware store.


1.2.3.6

PRO4824_table_026
  • Repeat this process to clamp the other side of the crossmember.
  • While clamped, tighten the crossmember anchor fasteners.

1.2.3.7

PRO4824_table_027
  • The rear crossmember will be positioned flush against the end of the frame extrusion.

Assembly Note

The rear crossmember will have a different spacing due to the length of the machine.


1.2.3.8

PRO4824_table_012
  • For each of the four gussets that attach to the outer crossmembers, install two Roll-in T-Nuts to the bottom of the crossmember extrusion as indicated.

1.2.3.9

PRO4824_table_013
  • Slide the T-Nuts in the extrusion to align them with the gusset holes.

1.2.3.10

PRO4824_table_014
  • Insert the fasteners as indicated and partially tighten.

1.2.4 Table Squaring


1.2.4.1

PRO4824_table_015
  • Measure diagonal across the table in each direction as indicated.
  • Make adjustments until the two measurements are within 1/8" or less of each other.
  • After squaring the table, tighten all anchor fasteners and leg gusset fasteners.

Assembly Note

Position of the leg gussets may need to be adjusted in the table squaring process.


1.3 Table Frame Assembly (without Leg Kit)

PRO4824_table_016

Section Note

Skip this section if you are using an Avid CNC leg kit


Parts and Tools Required

The following parts and tools will be used in Section 1.3

QTY Part/Description Packaged In
2 4080 Frame Extrusion, 950mm (37-3/8") Machine Kit Extrusion
3 4080 Crossmember Extrusion, 1250mm (49-1/4") Machine Kit Extrusion
1 40-3100-00 - 40 Series Short Double Anchor Assembly - 24 Base Table Kit
(24) 40 Series Anchor Fastener
(24) M8 x 30mm Socket Head Cap Screw
(12) CRP810-01 M8 Double Anchor Slide-in T-Nut
  • Required Tools:
    • 6mm Ball-End Allen Wrench
    • Tape Measure
  • Recommended Additional Tools:
    • 6mm Hex Ball-End Power Bit
    • Dimensional Lumber (refer to Step 1.3.2.4Step 1.3.2.4)
    • (2) 24" Hand Trigger Clamp

1.3.1 Table Crossmember Assembly


1.3.1.1

PRO4824_table_004
  • Thread the socket head cap screws into the anchor fasteners as indicated.

1.3.1.2

PRO4824_table_005
  • Slide the anchor assembly into the extrusion.

1.3.1.3

PRO4824_table_006
  • Loosely thread the double t-nuts onto the socket head cap screws as indicated.

1.3.1.4

PRO4824_table_007
  • Repeat the previous steps on both sides for all of the crossmember extrusion pieces.

1.3.2 Table Crossmember Installation


1.3.2.1

PRO4824_table_017
  • Slide the t-nuts into the 950mm (37-3/8") frame extrusion as indicated.

1.3.2.2

PRO4824_table_016
  • Repeat the previous step for all crossmembers.

1.3.2.3

PRO4824_table_018
  • Position the the outer crossmembers flush with the ends of the frame extrusion.
  • Position the center crossmember 360mm (14-3/16") from the front crossmember (or 400mm (15-3/4") center to center) as indicated.

Assembly Note

Use dimensional lumber to help position the crossmembers, as shown in the following steps.


1.3.2.4

PRO4824_table_028
  • Cut two pieces of dimensional lumber (a 2x4 is recommended) to a length of 360mm (14-3/16").
  • Position this piece between the crossmembers as indicated.

1.3.2.5

PRO4824_table_029
  • With the cut piece of lumber flush against the frame extrusion, clamp the crossmembers together.

Assembly Note

Recommended clamps are 24" Hand Trigger Clamps available at your local hardware store.


1.3.2.6

PRO4824_table_030
  • Repeat this process to clamp the other side of the crossmember.
  • While clamped, tighten the crossmember anchor fasteners.

1.3.2.7

PRO4824_table_031
  • The rear crossmember will be positioned flush against the end of the frame extrusion.

Assembly Note

The rear crossmember will have a different spacing due to the length of the machine.


1.3.3 Table Squaring


1.3.3.1

PRO4824_table_015
  • Measure diagonal across the table in each direction as indicated.
  • Make adjustments until the two measurements are within 1/8" or less of each other.
  • After squaring the table, tighten all anchor fasteners and leg gusset fasteners.

Assembly Note

Position of the leg gussets may need to be adjusted in the table squaring process.


1.4 Linear Rail & Gear Rack Installation

PRO4824_rails_001

Section Note

The remaining sections are applicable both with or without an Avid CNC leg kit. Some figures are shown without a leg kit for illustrative purposes.


Parts and Tools Required

The following parts and tools will be used in Section 1.4

QTY Part/Description Packaged In
2 Linear Rail, 950mm (37-3/8") Table Rail Kit
2 Gear Rack, 660mm (26") Table Rail Kit
4 GHH20CA - Linear Bearing Block Gantry Assembly Kit
4 Grease Fitting for Linear Bearing Block Gantry Assembly Kit
2 GH20-24-FAST [1] : Base Table Kit
(16) M5 x 20mm Socket Head Cap Screw (Total QTY: 32)
(16) M5 Slide-in T-Nut (Total QTY: 32)
1 Linear Rail Setting Jig Kit Base Table Kit
(2) Rail Alignment Jig
(4) M8 x 25mm Socket Head Cap Screw
(4) M8 Roll-in T-Nut
2 MGM-26-FAST-40 Base Table Kit
(5) M8 x 12mm Button Head Cap Screw (Total QTY: 10)
(5) M8 Slide-in T-Nut (Total QTY: 10)
1 LPRO-GREASE-KIT-19.1 Base Table Kit
(1) Grease Gun
(1) Tube of Grease
(1) Needle Tip Adapter
  • Required Tools:
    • 4mm Allen Wrench
    • 5mm Allen Wrench
    • 6mm Allen Wrench
    • Adjustable Wrench
    • (2) Clamps
    • Tape Measure

Machine Revision

1. If your Base Table Kit contains GH20-950-FAST fastener bags, use the assembly instructions for the 19.2 machine revision. Click Here to switch to those assembly instructions.(https://www.avidcnc.com/support/instructions/pro/downloads/#192-revision-machines)

  • Required Tools:
    • 4mm Allen Wrench
    • 5mm Allen Wrench
    • 6mm Allen Wrench
    • Adjustable Wrench
    • (2) Clamps
    • Tape Measure

1.4.1 Linear Rail Assembly


1.4.1.1

PRO4824_rails_002
  • Thread fasteners into the linear rail as indicated.

1.4.1.2

PRO4824_rails_003
  • Repeat this step for each of the linear rails.

1.4.1.3

PRO4824_rails_004
  • Slide one of the rails into the upper extrusion t-slot as indicated.

1.4.1.4

PRO4824_rails_005
  • The linear rail should be roughly flush with the end of the extrusion.

1.4.2 Linear Rail Alignment


1.4.2.1

PRO4824_rails_006
  • Attach the rail alignment jig to the extrusion as indicated.

1.4.2.2

PRO4824_rails_007
  • Fully tighten the alignment jig fasteners.

1.4.2.3

PRO4824_rails_008
  • Clamp the end of the linear rail to the jig as indicated.

1.4.2.4

PRO4824_rails_009
  • Repeat the previous step to clamps the other end of the rail.

1.4.2.5

PRO4824_rails_010
  • With the rail clamped to the alignment jigs, fully tighten all of the rail fasteners.

1.4.2.6

PRO4824_rails_011
  • Remove the clamps and alignment jigs.

1.4.2.7

PRO4824_rails_013
  • Repeat the previous steps to install the linear rail on the other side of the machine.

1.4.3 Gear Rack Installation


1.4.3.1

PRO4824_rails_014
  • Thread fasteners into the gear rack as indicated.

1.4.3.2

PRO4824_rails_015
  • Repeat the previous step for each of the gear rack sections.

1.4.3.3

PRO4824_rails_016
  • Slide one of the sections of gear rack into the extrusion.

1.4.3.4

PRO4824_rails_017
  • Position the Gear rack 102mm (4") from the front of the machine as indicated.
  • Tighten all gear rack fasteners.

1.4.3.5

PRO4824_rails_018
  • Repeat this procedure to install the gear rack on the other side of the machine.

1.4.4 Linear Bearing Block Installation


1.4.4.1

PRO4848_rails_026
  • Identify the indicated reference edge on the linear bearing block.

Assembly Note

DO NOT remove the plastic bearing retainers until instructed to do so in step 1.4.4.3


1.4.4.2

PRO4848_rails_018
  • Thread grease fittings into the linear bearing blocks, noting the orientation of the reference edge.
  • Hand tighten the grease fittings.

Assembly Note

You may need to relocate the pre-installed M6 button head cap screw to the other side of the linear bearing block.


1.4.4.3

PRO4848_rails_019
  • Slide two linear bearing blocks onto a rail.
  • Use the rail to push the plastic bearing retainer out of the block as indicated.

Assembly Note

Ensure the linear bearing blocks are oriented correctly. Grease fittings face away from each other and reference edges face upwards.


1.4.4.4

GreaseGun_001
  • Assemble the grease gun and tube of grease, following the manufacturer's instructions.
  • The video below shows how to assemble the grease gun.

1.4.4.5

GreaseGun_002
  • Loosen the end cap and install the needle tip adapter as indicated.

Assembly Note

Be sure to tighten the end cap after installing the needle tip adapter.


1.4.4.6

PRO4848_rails_021
  • Ensure the grease gun is primed before use.
  • Lubricate the linear bearing blocks with three pumps per block.

Maintenance Note

The blocks will need to be lubricated periodically. The required interval will depend upon machine use, loads, and ambient conditions. We suggest evaluating each month by cleaning the linear rails, moving the blocks along them, and checking for a lubricant film. If a film is not present, then add one additional pump of grease to your blocks.


1.5 Linear Rail Dust Covers

PRO4824_dustCovers_001

Parts and Tools Required

The following parts and tools will be used in Section 1.5

QTY Part/Description Packaged In
2 Linear Rail Dust Cover, 950mm (37-3/8") Dust Cover Kit
1 CRP814-00-24-FAST Dust Cover Kit
(8) M8 x 16mm Flat Head Screw
(8) M8 Roll-in T-Nut
  • Required Tools:
    • 5mm Allen Wrench

1.5.1 Dust Cover Assembly


1.5.1.1

PRO4848_dustCovers_002
  • Partially thread fasteners onto the linear rail dust cover as indicated.

1.5.1.2

PRO4824_dustCovers_003
  • Repeat the previous step to assemble two linear rail dust covers.

1.5.1 Dust Cover Installation


1.5.2.1

PRO4824_dustCovers_004
  • Slide an assembled 950mm (37-3/8") linear rail dust cover into the top t-slot as indicated.

Assembly Note

Ensure the linear rail dust cover is oriented so it overhangs the linear rail.


1.5.2.2

PRO4824_dustCovers_005
  • Fully tighten the fasteners on both linear rail dust covers.

Assembly Note

The ends of the linear rail dust covers should be flush with the ends of the extrusion as indicated.


1.5.2.3

PRO4824_dustCovers_006
  • Repeat this process on the other side of the table.

1.6 Table Bumper Installation

PRO4824_bumpers_001

Parts and Tools Required

The following parts and tools will be used in Section 1.6

QTY Part/Description Packaged In
1 CRP812-00-01-19.1 PRO Table Axis Bumper Kit Base Table Kit
(4) CRP812-05 Bumper Plate
(4) Rubber Bumper
(4) M6 x 20mm Socket Head Cap Screw
(8) M8 x 20mm Socket Head Cap Screw
(3) M8 x 30mm Fine Pitch Socket Head Cap Screw
(3) M8 Fine Pitch Hex Jam Nut
(3) CRP812-02 Sensor Flag
  • Required Tools:
    • 5mm Allen Wrench
    • 6mm Allen Wrench
    • Adjustable Wrench

1.6.1 Bumper Assembly


1.6.1.1

PRO4848_bumpers_002
  • Assemble one table bumper as indicated.

Assembly Note

Fully tighten the bumper until it is seated against the bumper plate.


1.6.1.2

PRO4848_bumpers_003
  • Repeat the previous step to assemble four table bumpers as indicated.

Assembly Note

Two of the bumpers will be assembled in a mirrored configuration as shown above.


1.6.2 Bumper Installation


1.6.2.1

PRO4848_bumpers_004
  • Install an assembled bumper into the extrusion as indicated.

Assembly Note

Ensure the bumper assembly is oriented correctly, with the bumper plate cutout facing up.


1.6.2.2

PRO4824_bumpers_005
  • Repeat this procedure to install the remaining three bumper assemblies at each corner of the machine.

1.6.2.3

PRO4824_bumpers_006
  • At the specified locations, install a sensor flag as indicated in the following steps.

1.6.2.4

PRO4848_bumpers_007
  • Assemble a sensor flag on the table bumper as indicated.

Assembly Note

Use Blue Loctite on the threads of the CRP812-02 sensor flag.


1.6.2.5

PRO4848_bumpers_008
  • Tighten the CRP812-02 sensor flag on the M8 screw.

1.6.2.6

PRO4848_bumpers_009
  • Adjust the M8 screw until the end of the sensor flag is 14.5mm (9/16") from the bumper plate as indicated.
  • Tighten the jam nut against the bumper plate.

Assembly Note

The dimension shown is from a top-down perspective of the machine.