Machining Process Engineer

Ford Motor Company; Chihuahua; On-site; MXN 400,000 - 640,000; Full time

Job summary

Lincoln Motor Company is seeking a Machining Process Engineer to own end-to-end CNC machining for structural components, driving dimensional stability and CPP reduction. You will implement tooling strategies, interpret CMM data, and optimize cycle times on high-volume automotive lines.

Requirements include 3–5+ years in automotive CNC environments, a relevant bachelor’s degree with license, and advanced English for collaboration with US-based teams.

Qualifications

• Bachelor’s degree with a professional license in mechanical/metallurgical/manufacturing engineering or related field.
• 3–5+ years of proven experience as a Process/Manufacturing/Tooling Engineer on high-volume CNC machining lines in automotive.
• Advanced English (B2+ to C1) for daily communication with global teams.

Responsibilities

• Design, validate, and optimize machining processes (milling, drilling, reaming, boring, honing) to achieve micron-level tolerances and Cp/Cpk targets.
• Lead tooling selection, trials, and CPP reduction with tooling vendors.
• Interpret CMM reports and translate deviations into workoffset updates and fixture adjustments.
• Analyze cycle times and optimize tool paths to maintain production cadence (JPH).
• Author and audit PFMEAs, Control Plans, Tool Layout Sheets, and Operator Instructions.

Skills

Process Ownership

Metrology

CNC Machining

Tooling

APQP

Documentation

PTR

Education

Bachelor’s Degree with Professional License in Mechanical/Mechatronics/Metallurgical/Manufacturing Engineering

Tools

Siemens 840D

Fanuc

CMM

Job description

We are looking for a Machining Process Engineer passionate about cutting metallurgy, advanced metrology, and high-speed production line optimization. In this role, you will be the end-to-end technical owner of the machining process for major structural components (CGI/cast iron engine blocks, aluminum cylinder heads, or forged steel crankshafts), driving dimensional stability, the introduction of new tooling, cost-per-part (CPP) reduction, and the alignment between product blueprints and the statistical capabilities ($C_p, C_{pk}) of our CNC machining centers.

• Process Ownership and Dimensional Capability: Design, validate, and optimize machining processes (milling, deep-hole drilling, reaming, boring, and honing) to ensure critical engine features achieve micron-level tolerances and statistical capabilities (Cp,Cpk≥1.67Cp, Cpk ≤ 1.67Cp,Cpk≥1.67).
• Tooling Management and Cost Reduction (Tooling & CPP):
  • Lead the selection, trial, and optimization of cutting tools (cemented carbide, PCD inserts for aluminum, and CBN for iron/CGI) in partnership with world-class tooling vendors (Sandvik, Kennametal, Mapal, Guhring).
  • Develop tool life strategies, flank wear criteria, and regrind/reconditioning programs to systematically drive down Cost Per Part (CPP) without compromising quality.
• Metrology Correlation and CMM:
  • Interpret daily dimensional reports from Coordinate Measuring Machines (CMM), surface profilometers (Ra,Rz,RkRa, Rz, RkRa,Rz,Rk) and air gauges.
  • Translate geometric deviations into immediate work offset updates (G54-G59G54-G59G54-G59), tool wear compensations, or mechanical adjustments to workholding fixtures.
• Cycle Time Optimization and Throughput:
  • Analyze cutting kinematics and non-cutting movements (air cuts) within numerical controllers (Siemens 840D / Fanuc), optimizing tool paths to eliminate bottlenecks and sustain target production line cadence (JPH).
• Technical Documentation and Core Tools (APQP / FPS):
  • Author and audit live process documentation: Machining PFMEAs (failure modes: journal/bore misalignment, exposed porosity, stripped threads, harmonic chatter), Control Plans, Tool Layout Sheets, and Operator Instruction Sheets (OIS / JES).
• Engineering Change Management: Plan and coordinate Plant Trial Runs (PTR) for new part number introductions, product engineering changes (WERS), or modifications in raw casting/forging stock.
• Cutting Fluids and Industrial Washing Support: Monitor and optimize concentration, pH, and filtration of water-soluble coolant or Minimum Quantity Lubrication (MQL) systems, as well as parameters for industrial part washers and thermal/high-pressure waterjet deburring cells.
• Bachelor’s Degree with a Professional License (Cédula Profesional) in Mechanical, Mechatronics, Metallurgical, Manufacturing, Industrial Engineering, or a related field.
• 3 to 5+ years of proven experience as a Process, Manufacturing, or Tooling Engineer on high-volume CNC machining lines in the automotive industry (hands-on experience in machining engine, transmission, chassis, or brake components is essential).
• Advanced / Fluent English (B2+ to C1). Essential for daily communication with Product Engineering (Powertrain D&R in Dearborn) and US-based machine and tooling builders.