Technical_Proposal_Evaluation-Critical_Factor_List.pdf

TECHNICAL PROPOSAL EVALUATION-CRITICAL FACTOR LIST

Project: OC14851 CNC Upgrade Proposal Number:

Contractor:

Government Evaluator:

Date:

ITEM SPECIFIC REQUIREMENT ACCEPTABLE NON-

ACCEPTABLE

REMARKS

a Facility Connections. Electrical connections made to the facility electrical system shall conform to NFPA 70.

b Electrical System. The machine shall conform to NFPA 79. The existing source power available at the facility is 460 volt, 3-phase, 60 Hertz (Hz). The machine’s electrical system shall be tolerant of fluctuation of ± 10 percent. The electrical system shall be complete. A properly rated and fused single disconnect device shall be utilized on the machine with means of lockout in the off position only.

c Electrical Enclosures. Construction of the electrical enclosures shall conform to NEMA ICS 6 standards. The enclosure shall be a NEMA 250 type 12 and shall provide for ventilation of components and shall be designed for an indoor non-hazardous location. 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.

d Arc Flash Protection. 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.

e Load Test. Nozzle holder (boom or shaft) shall not deflect more than 0.125 inch when a 25 pound load is applied at the nozzle.

Table shall be subject to maximum load test f Axis Motion Accuracy and Repeatability Test. Vendor shall demonstrate all axis motion accuracy and repeatability requirements and provide the equipment necessary to do so. Vendor shall use laser calibration equipment with current NIST certification to certify machine accuracy and repeatability. Linear displacement and angular rotations (pitch and yaw) shall be validated to ISO 230 or NMTBA standards.

Statistical analysis and plots of performance shall be provided in accordance with the requirements of the standard chosen for tool calibration. The accuracy claims shall be based on historical testing to the standards mentioned above using laser equipment.

g The system shall meet the following alignment and accuracy requirements as specified in the table

Characteristic Accuracy/ Tolerance

Positioning Repeatability (Bi-directional)

Linear Axes ± 0.010” Rotary Axes ± 0.5° Positioning Repeatability (Unidirectional)

Linear Axes ± 0.003" Rotary Axes ± 0.1° Positioning Accuracy (Bi-directional)

Linear Axes ± 0.020” Rotary Axes ± 1.0° Axes Perpendicularity

0.010”/foot h Robot Specifications. The robot shall include, but not be limited to, the specifications in the table

Characteristics Size/

Capacity Stroke Lengths Horizontal (X-Axis) 36” Vertical (Z-Axis) 36” A-Axis 190° B-Axis 360° Positioning Speed Linear Axes

500”/Minute

Positioning Speed Rotary Axes

3600°/Minut e

Load Carrying Capacity 50 lbs. @ 7" from A-Axis pivot i Motors. Motors shall be rated for continuous duty. Alternating-current (AC) motors shall be designed to operate on 60- Hz and each motor enclosure shall meet the requirements for a drip-proof enclosure.

Motors for axis movement shall be Fanuc servo motors and sized according to the Table. Any motors that are not sealed and permanently lubricated, mounted in hard to access areas, shall have a means to lubricate the motor without personnel having to climb on, under, or around the equipment. All motors shall meet the requirements of NEMA MG-1. Each motor shall have an identification plate to identify manufacturer, model identification, serial number, voltage, amperage, horsepower, phase, and frequency. Motor horsepower shall be the manufacturer’s standard or standard optional horsepower as indicated on the manufacturer's design and construction drawing(s). All axis accuracy and repeatability claims shall be demonstrated and documented using a laser measuring system.

Characteristic Capacity Motor

Size Nozzle Motion Travel

X Axis 36”

Horizontal A8/4000H

VIS

Z Axis 36”

Vertical

A8/4000H

VIS

w/Brk

Tilt Axis (A axis)

±95° A4/5000H

VIS

w/Brk

Yaw Motion (B axis)

±180° A4/5000H

VIS

Part Motion Axis Travel

C Axis Motion Continuous and

Indexing Motion

360° Rotational speed 0.3- 30 rpm.

A12/4000

HVIS

j Control System. The control system shall be composed of a computerized nozzle manipulation system operated by CNC that is user friendly and is aided by a second operator interface that communicates with the system PLC which stores different process parameters and controls all motion.

The control shall be the latest FANUC control available that has simultaneous controlled motion of all six (6) axes of motion per path. This operator interface shall receive all the process instructions such as nozzle movement, dwell time, total cycle time, nozzle selection, blasting pressure etc. Recipes shall be identified by an independent address (part number or some other form of identification).

Different recipes shall be selectable from this system to process different parts. This screen shall display the critical process parameters. The control shall store a minimum 75 different part programs or recipes. A security clearance device shall be implemented to prevent unauthorized users from changing any of the critical process parameters.

k Controller Computer and Operator Interface. The system shall utilize a single Windows based PC for controlling all the motion functions with a user friendly English text programmer/operator interface.

The controller shall be responsible for axes motion control, full process control, process monitoring, and process/systems diagnostics ability. Necessary support services and peripheral equipment shall also be linked to the control. The programmer/operator interface shall consist of an industrial terminal touch screen color monitor, keyboard holder and an extended sealed pendant as the operator interface. The terminal shall have an industrial IBM compatible PC. The PC shall have an industry standard 250 Gigabyte (GB) hard drive, four (4) GB of random access memory (RAM) installed, Windows 7 operating system, an internal industry standard 40× CD-ROM read/write drive, and six (6) universal serial bus (USB) ports for data transfer. The controller shall house all the necessary features to create files, edit, and store them for future use. The controller shall have three levels of security, which enable the administrator of the system to lock out specific parties or operations as desired. The controller cabinet shall be cooled by means of an air conditioning unit. The controller program backup shall be accomplished by using the removable disk drive and via the USB ports.

l Data Logger. The system shall be equipped with a parameter monitoring and data logging software. The data logger shall provide a record of all process parameters, alarms, and shutdowns. The data logger shall have a reporting data function that allows operator to set the schedule. The data logger file shall store part name, part number, and serial number.

m Operator Control Pendant. A programmable pendant shall be incorporated into the system to allow the operator to perform all jogging functions on the control system. The pendant shall have an illuminated display for ease of viewing.

The hand-held teach pendant shall include but not be limited to the following items.

a. Jogging All Axes in Positive or Negative Directions

b. Select High, Medium, Low or Incremental Jog Speeds

c. Homing of All Axes

d. Cycle Run Button for Program

Execution

e. Store Button to Insert the

Current Position into the Motion Program

f. Emergency Stop Push-Button (mushroom type, push to activate, and twist to reset button) n Emergency Stop Buttons. The CNC system shall have a manually operated emergency stop "E-STOP" switch that shall terminate the peening cycle, including all motion, air and media flow to the nozzle.

This sequence shall have no effect on the established program. The "E-STOP" switches shall be located on the frame of the system in accordance with NFPA 79, as well as the pendant. These shall be mushroom type, push to activate, and twist to reset buttons.

p Operational Test. The machine shall be operated at no-load for not less than four hours. Proper operation of all controls, motors, adjusting mechanisms, and accessories shall be verified during the trial period.

q Conversion Software. Conversion Software that converts Allen Bradley programs to FANUC programs automatically shall be included. The conversion program shall keep same position coordinates from the original program, but shall convert the way feedrates are calculated and programmed. Other commands such as delays, setting of variables, comments and conditional commands shall be converted. Minor manual editing and testing is acceptable for each transferred program to assure original program is properly executed.

r Almen Intensity Software. A software program shall be provided which calculates the intensity of the shot stream based upon a series of Almen tests which calculates and plots a saturation curve indicating the intensity for the given process parameters.

s Manuals/Drawings. The contractor shall furnish complete Operation and Service Manual updates which fully document all changes made to the machine. Machine drawings shall consist of all assembly and subassembly prints necessary for maintenance and assembly of the system.

Control drawings shall include a complete set of machine control drawings (including electrical, pneumatic and hydraulic schematics) and all assembly and sub-assembly drawings required for component identification. The contractor shall also furnish 2 (two) digital copies of the complete technical manuals and drawings (original plus updates) in Adobe's Postscript (*.PDF) file format on CD-ROM(S). The digital manuals and drawings shall be organized, indexed and referenced similar to the equivalent hardcopy format (i.e. volume, manual, section, etc).