Rafael Rivera Email & Phone Number

Palmdale, Ca, Us

Orange, Ca, Us

Sr. Engineering Designer/Checker, ASME-Certified GD&T Subject Matter Expert & Trainer with strong parametric solid modeling experience. Expert in dimensioning and tolerancing parts to ensure all available tolerance being used to facilitate manufacturing and reduce manufacturing costs significantly. Familiar with design and production practices in all areas including structures, castings, forgings and precision machine work that result in cost-effective designs. Experienced with materials and processes. Extensive experience working in machine shops (manual and CNC machines). Experienced in the design of motor driven actuators. Thorough knowledge of engineering documentation; DOD, MIL, ANSI and ASME standards and related disciplines. QUALIFICATION SKILLSASME-Certified Geometric Dimensioning & Tolerancing Professional (GDTP) - Senior LevelMember: ASME Y14 Committee Engineering Drawing and Related Documentation Practices.Senior Engineering Designer, Senior Engineering Design Checker, GD&T Mentor, Senior Dimensional Engineer, and Senior Engineering Tolerance Analysis Consultant.• Mechanical Designer/Checker• Certified GDTP Senior Level• GD&T Y14.5 1982, 1994, 2009 & 2018• Dimensioning Specialist• Machine Shop Expert• Supervision Skills• Cost Reduction Studies• Problem Solver• Siemens NX Designer• Producibility Studies• Tolerance Studies COMPUTER SKILLS• Siemens NX (Unigraphics) • ProductView 7.0 and CreoView 2.0• TeamCenter Enterprise (PDMS)• TeamCenter Engineering (EPDM) • Microsoft Office: Word, Excel, Access, PowerPoint and OutlookI have mentored engineers face-to-face in my office and presented one-hour Lunch and Learn Seminars on machine shop and other fabrication processes, such as, Design-to-Cost, Design-for-Manufacturing, Cost-Effective-Methodologies, as related to their specific design development.

Pasadena, Ca, Us

Performed form, fit and functional check of spacecraft structures and related parts and fittings using Adobe® Acrobat® Professional software to perform electronic paperless checking and 3D model to 2D drawing comparison and verification. Including extensive CAD analysis due to compound angles and critical polar and Cartesian coordinates.Mentored engineering in machine shop and other fabrication processes, Design-to-Cost, Design-for-Manufacturing, Cost-Effective-Methodologies, as related to their specific design development. This facilitated a quality first pass yield reducing drawing errors and thereby reducing engineering and manufacturing cost.

Performed form, fit and functional check of spacecraft structures and related parts and fittings using Adobe® Acrobat® Professional software to perform electronic paperless checking and 3D model to 2D drawing comparison and verification. Including extensive CAD analysis due to compound angles and critical polar and Cartesian coordinates. Mentored engineering in machine shop and other fabrication processes, Design-to-Cost, Design-for-Manufacturing, Cost-Effective-Methodologies, as related to their specific design development. This facilitated a quality first pass yield reducing drawing errors and thereby reducing engineering and manufacturing cost.Presented one-hour Lunch and Learn Seminars on Basic Calculations of Geometrical Dimensioning and Tolerancing Consistent with the principles and practices of ANSI Y14.5M-1982. with the following Topics; Virtual Condition, Resultant Condition, Tolerance Zones, Additional (Bonus) Tolerance, Modifiers, Worse Case Inner and Outer Boundaries.Supported engineering as a machine shop consultant, developing designs and methods that significantly reduced manufacturing cost.Presented one-hour Lunch and Learn Seminars on Design-to-Cost, Design-for-Manufacturing, Cost-Effective-Methodologies that facilitated a quality first pass yield reducing drawing errors and thereby reducing engineering and manufacturing cost.

Pasadena, Ca, Us

Continuing with the green movement, automated the checking process using Adobe® Acrobat® Professional software to perform electronic paperless checking.Performed form, fit and functional check of spacecraft structures and related parts and fittings and 3D model to 2D drawing comparison and verification. Including extensive CAD analysis due to compound angles and critical polar and Cartesian coordinates.

Assisted department management with setting the direction and helped reinforce the desired culture and work environment of the department.As a department technical resource, acted as a coach and mentor to designers.Worked with designers to ensure they recognize the interrelationship between the design and the assembly process, and help them to eliminate tolerancing problems before they happen.Helped to properly toleranced drawings and to analyze the tolerances applied to designs from the bottom up or from the top down.Worked with designers, guiding and leading their tolerance analysis efforts, looking at ways to reduce the accumulation of tolerances and how to mitigate their effects on the desired outcome.Assisted the design team with highly complex design analysis problems to find the right solution.Supported the product team with a functional GD&T evaluation, relating GD&T to the product requirements.Evaluated drawings for compliance to GD&T standard, design, maintenance, manufacture, installation, operating, safety, and clearance requirements.Verified standard notes, call-outs, weld symbols, wire sizes and view requirements to adequately depict the design intent.

Continuing with the green movement, automated the checking process using Adobe® Acrobat® Professional software to perform electronic paperless checking.Performed form, fit and functional check of spacecraft structures and related parts and fittings and 3D model to 2D drawing comparison and verification. Including extensive CAD analysis due to compound angles and critical polar and Cartesian coordinates. Checked model base definition (MBD) using ProductView and CreoView.Mentored engineering in machine shop and other fabrication processes, Design-to-Cost, Design-for-Manufacturing, Cost-Effective-Methodologies, as related to their specific design development. This facilitated a quality first pass yield reducing drawing errors and thereby reducing engineering and manufacturing cost.

Continuing with the green movement, automated the checking process using Adobe® Acrobat® Professional software to perform electronic paperless checking.Supported Design Services Group as a consultant developing in-house GD&T training for engineers and designers.Performed form, fit and functional check of NASA J-2X Rocket Engine prototype engineering drawings, mainly valves for producibility, material, and component selection. Advised on dimensioning application utilizing dimensional management and GD&T experience. Verified 3D solid model geometry utilizing Pro/Engineer Wildfire 3, 4 & Creo Parametric 2.0.

Cedar Rapids, Iowa, Us

Supported the FAA approval of the Boeing 787 pilot controls. Checked engineering drawings for producibility, material, component selection, etc. utilizing GD&T.Supported the design of the Yaw Controls System on the P-20 Flight Deck Controls program for Gulfstream Aerospace.

During this time, as Senior Design Engineer supported in the Space Interferometer Mission (SIM) and (Orbiting Carbon Observatory OCO) programs design. Supported in the design from start to finish of the Tunable Laser Spectrometer (TLS) one of 3 instruments that makes up the Sample Analysis at Mars (SAM) instrument suite on Mars Science Laboratory (MSL) payload. I was eventually reassigned to the MSL program after finishing TLS.

Supported the design of Small Diameter Bomb (SDB) project including prototype and production units for flight. Also, supported the primary and utility actuation systems for the X45B Unmanned Control Air Vehicle (UCAV).

Supported the design of Electromechanical Actuators, Solar Array Drive Assemblies, Motion Control Systems and the associated electronics for the positioning of Solar Panels, Antennae, and Optical devices in Satellite and Space Systems.Worked with engineering as machine shop consultant developing designs to reduce manufacturing cost.CNC Programmer/Machine Shop Lead Man 03/1991 - 04/2000Lead highly skilled machinist personnel. Trained and mentored conventional machinist on all CNC machinery equipment. Responsible for the programming of the latest in computer controlled manufacturing machinery (EDM, lathes and 4 axis milling machines).Checked engineering drawings to ensure manufacturability, cost optimization, and appropriate geometric dimensioning and tolerancing (GD&T).

Supervised 8 Machinist on 2nd shift. Checked all first articles. Programmed CNC lathes and mills. Helped production with tooling design and fabrication. Improved machining methods decreasing cycle time 40 to 60 percent, while increasing sales by maintaining competitive cost estimates.

Conducted in-house seminars on ANSI Y14.5M Geometric Dimensioning and Tolerancing (GD&T).Trained personnel on all machinery and equipment in each department. Responsible for the programming of all CNC lathe and mills. Learned about production tooling design and fabrication. Performed cost estimates of all new jobs.Maintained highest output and lowest manufacturability cost by accurately matching employee skills with appropriate job function. Produced and delivered an average of $150k in monthly sales, while keeping monthly payroll cost under $20k by recruiting and training an inexperienced, entry-level workforce.