CNC Turning Programmer Cum Operator

Ascent Precision; Chakan; On-site; INR 420,000 - 620,000; Full time

Job summary

Ascent Precision is seeking an experienced CNC Turning Programmer Cum Operator to independently handle programming, machine setup, tooling, prove-out, machining and inspection of precision heavy components.

The candidate should have hands-on experience with large-diameter and long components such as shafts, eccentric shafts, bearing housings, rings and sleeves, with strong proficiency in G-code/M-code and GD&T. Prior exposure to Fanuc/Siemens/Mitsubishi controls is preferred.

Qualifications

• Programming CNC turning from engineering drawings.
• Ability to interpret GD&T and tolerances.
• Proficient with G-code and M-code for complex parts.

Responsibilities

• Develop CNC turning programs independently from drawings.
• Set up CNC turning machines for new jobs and verify first piece.
• Modify and optimize existing programs and tool paths.
• Select cutting parameters and tooling, ensuring quality and efficiency.
• Carry out program prove-out and first-piece inspection.

Skills

G-code & M-code

Read engineering drawings

GD&T

Tools

Fanuc controls

Siemens controls

Mitsubishi controls

Job description

We are looking for an experienced *CNC Turning Programmer Cum Operator* capable of independently handling *programming, machine setup, tooling, prove-out, machining and inspection* of precision and heavy engineering components.

The candidate should have strong hands-on experience in machining *large-diameter and long components*, including shafts, eccentric shafts, bearing housings, rings, bushes, sleeves and other critical components.

Key Responsibilities

• Develop CNC turning programs independently using *G-code and M-code*.
• Prepare programs directly from engineering drawings.
• Modify and optimize existing CNC programs.
• Select appropriate machining sequences and cutting parameters.
• Optimize tool paths to reduce cycle time and tool consumption.
• Use canned cycles for roughing, finishing, threading, drilling, boring, grooving, etc.
• Troubleshoot program-related machining problems.
• Knowledge of *Fanuc / Siemens / Mitsubishi* controls preferred.

Machine Setup

• Independently set up CNC turning machines for new jobs.
• Select suitable cutting tools, inserts, holders and boring bars.
• Set tool offsets and work offsets.
• Perform component alignment and centering.
• Set up steady rests, hydraulic/4-jaw chucks and other work-holding arrangements.
• Check component runout before machining.
• Carry out program prove-out and first-piece approval.

Heavy & Precision Component Machining

• Main shafts
• Eccentric shafts
• Crusher shafts
• Bearing housings
• Sleeves
• Bushes
• Rings
• Spacers
• Bearing components
• Counterweight-related components
• Heavy engineering housings
• Mining and crushing equipment components

Experience with *large-diameter and long-length components* will be highly preferred.

Drawing & Technical Knowledge

Candidate must be able to:

• Read and understand engineering drawings.
• Interpret dimensional tolerances.
• Understand *GD&T*.
• Understand surface-finish requirements such as *Ra 0.8, 1.6, 3.2*, etc.
• Understand fits and tolerances such as H7, h6, g6, etc.
• Identify critical dimensions and machining requirements.
• Calculate machining allowances and appropriate finishing allowances.

Tooling & Cutting Parameters

• Select appropriate carbide inserts and tooling.
• Determine cutting speed, feed and depth of cut.
• Optimize roughing and finishing parameters.
• Select tools based on material such as:
  • EN8
  • EN19
  • EN24
  • SAE 4140
  • C45
  • Cast iron
  • Stainless steel
  • Other engineering materials
• Monitor tool wear and replace tools when required.
• Minimize tool breakage and unnecessary tool consumption.

Inspection & Quality

The candidate should independently carry out *first-off and in-process inspection* using:

• Vernier caliper
• Outside micrometer
• Inside micrometer
• Bore gauge