CNC Press Brake & Sheet Metal Bending Job Work Vasai · Mumbai · Palghar
CNC + Manual + Power Press Bending · 0.5mm to 8mm MS · CR / HR / GI / SS 304 / SS 316 · ±0.5° Angular Tolerance · ISO 9001:2015
Aero Enterprises Unit I, Vasai Phata provides CNC press brake and sheet metal bending job work in Vasai, Mumbai, and Palghar — a complete bending division running a CNC multi-axis press brake, manual press brakes, and power press form bending simultaneously on one production floor. ISO 9001:2015 certified CNC bending services with K-factor springback compensation, first-off angular inspection, and integrated powder coat finishing for LED lighting, automotive, solar tracker, and furniture OEM clients across the Mumbai–Palghar industrial corridor.
Expertise and Experience
Aero Enterprises Unit I Vasai Phata operates a complete sheet metal bending division covering three bending process types simultaneously: a CNC multi-axis press brake for precision profile and enclosure bending, two manual press brakes with back gauge for medium-complexity structural and bracket bending, and power press bending operations integrated into the 20-press stamping floor for high-volume formed profiles. This combination means Aero Enterprises can allocate the correct bending process to each job based on geometry complexity, volume, tolerance requirement, and material grade — rather than being constrained to a single machine type. Precision enclosure work goes to the CNC press brake. High-volume bracket and hardware bending goes to the power press floor. Structural and non-standard profiles go to the manual press brakes. Every bending job begins with a sequence program that defines which bends are formed in which order before the first piece is loaded.
Why Our Process Wins
The most common bending failure in sheet metal fabrication is not machine inaccuracy — it is wrong bend sequence programming and uncompensated springback. At Aero Enterprises Unit I, every CNC press brake job has a bend sequence programmed into the controller before the first blank is loaded, with springback compensation calculated per material grade and thickness using K-factor bend allowance data built from our own production history across CR, HR, GI, SS, brass, copper, and aluminium. First-off angle verification with a calibrated digital protractor is mandatory before batch production is approved. The first part is as accurate as the thousandth part because the program controls the machine, not the operator's judgement.
Machinery · Unit I Vasai Phata
CNC Press Brake 100T / 3100mm ×1 (Multi-Axis Back Gauge), Manual Press Brake 6.5ft / Manual Back Gauge ×2, Power Press Form Bending integrated across 20-press floor at Unit I Vasai Phata.
Core Capabilities
Verification Protocol
Bend sequence programming review before first blank is loaded. Sequence verified for back gauge accessibility on all bends and optimised to eliminate manual repositioning without gauge reference between strokes.
First-off angle verification using calibrated digital protractor on all bend angles before batch production is approved. Any deviation outside ±0.5° triggers program adjustment before the batch proceeds.
K-factor bend allowance calculation per material grade and thickness for every new component. Developed length calculated from bend allowance data — not estimated — to ensure nominal flange dimensions after forming.
Springback compensation verification on first-off sample. Actual springback measured against the programmed offset and adjusted if outside tolerance before batch starts.
Tooling wear monitoring for V-die radius consistency. Worn V-die tooling increases the effective inside bend radius and produces flange length deviation on tight-tolerance components. Die radius measured at defined intervals and replaced before the production tolerance limit is exceeded.
Final dimensional audit on finished batch: flange length, overall envelope, angle verification on all critical bends, visual check for tool marks, surface damage, and edge condition before transfer to powder coat or dispatch.
Stamping Operations
Six stamping and forming operations run simultaneously across the 20-press floor. Each has a correct application — specifying the wrong operation produces defects that cannot be corrected downstream.
Air Bending
The punch presses the sheet into a V-die without fully bottoming out. Bend angle is controlled by punch penetration depth. Most flexible bending method — one die set handles multiple angles. Standard operation for most CR, HR, and GI sheet components at Unit I.
Applications
Brackets · Enclosure flanges · Mounting plates · Structural profiles
Bottom Bending
The punch forces the sheet fully to the die floor, setting the bend angle into the material. Eliminates springback by coining the bend zone. Correct for tight-tolerance angular profiles where air bending springback variation is not acceptable.
Applications
Precision enclosure panels · Electrical cabinet frames · Automotive brackets
Hemming
Folding the sheet edge back onto itself to create a safe, rounded, or closed flat edge. Two-stage operation: acute bend first, then flattening stroke. Eliminates sharp cut edges on exposed panels and improves edge rigidity without adding material.
Applications
LED panel edges · Enclosure door edges · Furniture panels · Appliance covers
Offset Bending
Producing a Z-shaped or step profile in a single press stroke using a dedicated offset die. Correct for overlap joint geometries, raised platform brackets, and recessed panel features where two separate bending operations would introduce positional error.
Applications
Step brackets · Overlap flanges · Recessed panel mounts · Z-profiles
Box & Pan Bending
Forming all four flanges of a box or tray section from a pre-notched flat blank. Each flange bent sequentially with back gauge repositioning between strokes. Correct for enclosure bodies, tray sections, and structural box profiles requiring consistent internal corner geometry.
Applications
Electrical enclosures · LED driver boxes · Junction trays · Structural frames
Multi-Bend Profiles
Complex profiles requiring 4 or more sequential bends — channels, hat sections, U-profiles, and custom extrusion-replacement sections. CNC back gauge repositioning between each stroke maintains cumulative angular and dimensional accuracy across the full bend sequence.
Applications
Structural channels · Hat sections · Solar tracker rail profiles · Furniture frames
Progressive vs Compound
vs Deep Draw Die
Die type determines per-part cost, tooling investment, and achievable tolerance. Wrong die type for the volume produces either over-investment or inadequate batch consistency.
CNC Press Brake
Best For
Enclosures, multi-bend profiles, long channels, SS scratch-free — any volume from 1 piece
Manual Press Brake
Best For
Structural brackets, non-standard geometry, medium volumes where CNC setup cost is not justified
Power Press Bending
Best For
L-brackets, U-channels, Z-sections, saddle profiles — repeat high-volume components only
Manufacturing ID · Unit I Vasai Phata
Unit I Capability
CNC Press Brake 100T / 3100mm ×1 (Multi-Axis Back Gauge), Manual Press Brake 6.5ft / Manual Back Gauge ×2, Power Press Form Bending integrated across 20-press floor at Unit I Vasai Phata.
Industries Served
Industrial Applications
LED Lighting Manufacturers
Enclosure shells, heat sink housings, driver compartment boxes, and formed mounting brackets for LED flood light, street light, highbay, and panel light assemblies requiring tight angular tolerances and scratch-free SS or powder-coated CR finishes.
Tracker OEMs
Formed channel sections, pivot arm profiles, structural mounting brackets, and multi-bend torque tube support components for solar tracker systems requiring consistent angular geometry across high-volume production batches.
Automotive OEMs
Multi-bend bracket assemblies, body reinforcement profiles, seat frame components, and structural channel sections in CR IS 513 DQ and DDQ grade requiring tight flange length and angle tolerances for assembly fit.
Furniture Manufacturers
Wall unit side panels, shelf support profiles, frame sections, and formed hardware components for modular office and industrial furniture systems in CR and powder-coated MS.
Stationery Manufacturers
Formed strip components, binding mechanism housing profiles, and multi-bend hardware parts for stationery assembly operations requiring high-volume consistent bend geometry.
Sheet Metal Component and Parts Clients
Custom enclosures, electrical panel bodies, HVAC duct sections, industrial cabinet profiles, and general engineering formed components across the full material capability range.
CNC Multi-Axis Bending | Aero Enterprises Vasai — Technical FAQ
Common technical and commercial questions about cnc multi-axis bending | aero enterprises vasai at Aero Enterprises Unit I, Vasai Phata.
What is CNC press brake bending in sheet metal fabrication?
CNC press brake bending is a sheet metal forming operation where a hydraulic press brake forces a punch into sheet material positioned over a V-die to produce a precise angular bend. The bend angle, back gauge position, and punch travel depth are all controlled by a CNC controller — eliminating manual setting errors and producing consistent angular accuracy across the full batch. At Aero Enterprises Unit I, Vasai Phata, CNC press brake bending handles material from 0.5mm to 8mm MS and 5mm SS in CR IS 513, HR IS 2062, GI IS 277, SS 304, SS 316, aluminium, brass, and copper.
How does a CNC bending machine work?
A CNC bending machine — or CNC press brake — works by clamping sheet metal between a punch (top tool) and a V-die (bottom tool) and applying controlled press force to form a precise bend angle. The CNC controller manages three variables: punch travel depth (which controls the bend angle), back gauge position (which controls flange length), and press speed. The back gauge positions automatically between bends for multi-bend sequences, meaning the operator loads the blank and the machine produces every bend in the programmed sequence without manual measurement. At Aero Enterprises Unit I, the CNC press brake is a 100T / 3100mm machine with multi-axis back gauge.
What is multi-axis back gauge bending and why does it matter?
A multi-axis CNC back gauge positions the sheet metal precisely before each press stroke — controlling the X axis (front-to-back depth) and Z axes (left-right position) independently. This allows the machine to reposition automatically between bends on a multi-bend profile without manual measurement or operator repositioning between strokes. The result is consistent flange lengths and cumulative angular accuracy across complex bend sequences that single-axis or manual back gauge machines cannot reliably maintain.
What is the difference between air bending and bottom bending?
Air bending controls the bend angle by punch penetration depth — the sheet does not contact the full die surface, which allows one die set to produce multiple angles. It is the standard method for most sheet metal bending work. Bottom bending forces the sheet fully to the die floor, coining the bend zone and eliminating springback variation — correct for tight-tolerance profiles where air bending angle variation across the batch is not acceptable. At Aero Enterprises Unit I, the correct method is selected based on material grade, thickness, angular tolerance, and batch volume.
What is springback in sheet metal bending and how is it controlled?
Springback is the elastic recovery of sheet metal after bending force is released — the bend angle opens slightly from the intended angle. Springback magnitude varies by material grade, thickness, temper, and bend radius. At Aero Enterprises Unit I, springback compensation values for each material and thickness combination are programmed into the CNC press brake controller using K-factor bend allowance data. First-off angular verification confirms the compensation is correct before batch production begins.
What materials can be bent at Aero Enterprises Unit I?
CNC press brake bending at Aero Enterprises Unit I handles CR IS 513 (CQ, DQ, DDQ), HR IS 2062, GI IS 277, SS 304, SS 316, aluminium, brass, and copper. Material thickness range is 0.5mm to 8mm for mild steel and up to 5mm for stainless steel on the 100T CNC press brake. All material enters production from JSW and TATA primary certified coils verified against Mill Test Certificates at Unit II Dhumal Nagar.
What angular tolerance does CNC bending achieve at Aero Enterprises?
CNC press brake bending at Aero Enterprises Unit I achieves ±0.5° angular tolerance across the full 3100mm bed length with ±0.01mm back gauge positioning repeatability. First-off angular inspection using a calibrated digital protractor is performed on all bend angles before batch production is approved on every job.
What is the minimum bend radius for sheet metal bending?
Minimum internal bend radius is a function of material grade and thickness. For CR IS 513 CQ grade, minimum internal radius is 1.0× material thickness. For HR IS 2062, minimum is 1.5× material thickness. For SS 304 and SS 316, minimum is 1.0× material thickness due to work hardening characteristics. Bending below the minimum radius for the grade causes fracture or cracking at the bend zone. At Aero Enterprises Unit I, minimum bend radius is confirmed against the material certificate before tooling is selected.
Can Aero Enterprises bend pre-punched or pre-stamped components?
Yes. The standard production sequence at Aero Enterprises Unit I is stamping or laser cutting first — producing all holes, slots, and blank profiles — followed by CNC press brake bending. Pre-punched components are bent with hole pattern orientation referenced to back gauge position to maintain the relationship between hole centres and bent flanges. This is the correct sequence for enclosure bodies, bracket profiles, and structural frames where hole-to-flange dimensional accuracy is a specification requirement.
What is the minimum order quantity for CNC bending job work at Aero Enterprises?
Aero Enterprises Unit I processes CNC bending job work from 50 pieces upward for repeat profiles where a bend programme already exists. New profiles require first-off setup and programme creation — performed on the first order and retained for all repeat production. For prototype and design validation, single pieces and small batches are accepted with a setup charge. Clients supplying DXF files with bend sequence notation reduce setup time and cost significantly.
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