Deburring_Item_Description_edit_9-27-17.docx

DEPARTMENT OF THE AIR FORCE

OKLAHOMA CITY AIR LOGISTICS COMPLEX (OC-ALC)

TINKER AIR FORCE BASE OKLAHOMA

Statement of Work / Item Description

Deburring Machine 76 CMXG is requesting the purchase of:

One (1) Timesavers 4200 Series deburring machine or equivalent with the following characteristics:

Machine General:

1. The general construction of the machine shall be of a revolving carousel with rotary brush design.

2. The design shall incorporate a sufficient number of brushes necessary to accommodate deburring of both external and internal edges in a single pass per side without the removal of surface coatings.

a. The design shall incorporate operator controlled variable speed drives for both carousel and brush RPM management.

b. The design shall incorporate rapid change abrasive spindle assemblies. The maximum time to replace a complete set of rotary abrasives must be able to be accomplished in less than 30 minutes by a single operator. Upon delivery, the machine shall include a complete set of installed abrasives (180 grit).

c. The design shall incorporate a minimum horizontal infeed opening of sufficient width to allow the full edge deburring of a 4’ wide stock of sheet or plate material.

d. The design shall incorporate an operator managed motorized carousel height adjustment with sufficient vertical infeed range that can accommodate material thicknesses of up to 4” inches.

Vacuum Conveyor System:

3. The conveyor system design shall be of a variable speed drive vacuum assisted conveyor bed.

a. The vacuum conveyor bed shall be able to process a minimum size part with a dimension of 4”x4”.

b. The conveyor design shall allow the operator to select variable feed rates of at least 6-20 FPM.

c. The conveyor system shall incorporate a bed infeed extension with vacuum assist. The minimum length of the infeed conveyor extension is 20” and shall be incorporated into the deburring machine’s main internal conveyor system.

d. The machine shall contain an outfeed conveyor extension. Minimum length of outfeed conveyor extension is 20”. The outfeed conveyor extension is NOT required to be integrated with vacuum conveyor bed system, however, the design, placement, and operation of the outfeed conveyor bed shall permit the smooth transition of processed parts exiting the machine to smoothly transition onto the extension without binding, forcibly ejecting, or otherwise causing damaging the part.

e. The design of the conveyor system shall contain both Infeed and outfeed pressure rollers.

f. Machine shall include an Infeed emergency stop bar.

Dust Collection System:

4. The machine shall include a wet type dust collecting system.

a. The dust collection system shall be of sufficient design to achieve a minimum flow rate of 5,750 CFM @ 5” static. All necessary ducting, internal or external to the machine, shall be included upon delivery of the equipment.

Electrical:

5. The machine shall conform to NFPA 79.

6. The existing source power available at the destination facility is 480V, 3-phase, 60 Hertz. The machine’s electrical system, as well as any included accessories, shall be tolerant of fluctuations of ±10% and include any shielded electrical transformer(s) that may be required to modify the existing source voltage to the proper operating voltage of the equipment.

7. A properly rated and fused single disconnect device shall be utilized on the machine with means of lockout in the off position only.

8. The machine shall be equipped with a non-resetting type, hour meter to display accumulated machine operating time that is externally viewable to the operator.

Electrical Enclosures:

9. Construction of the electrical enclosures shall conform to NEMA ICS 6 standards. The enclosure shall be a NEMA 250-2008 Type 12, shall provide for ventilation of components and shall be designed for an indoor non-hazardous location. All electrical components shall conform to applicable NEMA ICS 1 standards. The machine shall be provided with interlocks on its electronic cabinet that shall instantly remove power from the equipment when the door is opened in accordance with NFPA 79.

ARC Flash Protection:

10. The machine enclosures shall be marked for arc flash in accordance with NFPA 79 Paragraph 16.2.3 “Safety Signs for Electrical Enclosures” for arc flash safety.

Misc:

11. Marking on Instruments, Control Panels, and Plates. All words on plates shall be in the English language. Characters shall be engraved, etched, embossed, or stamped in boldface on a contrasting background. All plates shall be corrosion resistant.

12. The design of the machine shall contain programmable storage capability for bed thickness and brush height. Minimum storage capacity for up to 10 programs.

13. Centralized Control Panel located at the front of the machine shall include at a minimum Main Motor Load Meters, Digital Thickness Display, and other required controls to meet the above listed requirements.

14. Shall include one complete set of spare abrasives (180 grit).

15. Contractor shall provide training for one week (40 hours) with operator and maintenance personnel at Tinker AFB per Hours of Operation in the SOW.

16. The machine should not require modification to the existing foundation. The existing floor within the building consists of 8 to 12 inch thick concrete with two (2) layers of ½” (No 4) rebar reinforcement.

17. The overall machine footprint shall not exceed 14 ½ x 20 feet.

Revised: 27 September 2017 Page 2 of 2 image1.wmf