Y31125E Gear Hobbing Machine
The Y31125E hobs cylindrical spur and helical gears, worm wheels and chain wheels by the continuous indexing method, and it is built for large batch, small batch and single production alike. The bed is wide, which is where the rigidity and strength come from, and it is that rigidity that lets the machine hold precision...
What This Machine Does
The Y31125E hobs cylindrical spur and helical gears, worm wheels and chain wheels by the continuous indexing method, and it is built for large batch, small batch and single production alike. The bed is wide, which is where the rigidity and strength come from, and it is that rigidity that lets the machine hold precision under a full-depth hobbing cut. Two details decide how long that precision lasts. The indexing worm gear in the work table is produced on a precise worm wheel machine tool and finished on a special worm rod grinding bed, so index precision is built into the gear that governs every tooth the machine cuts. The worm wheel itself is high-quality copper, chosen for abrasion resistance, so the index does not wear out of tolerance in service. The casting parts are given precipitation heat treatment, which takes the internal stress out of the iron and stops the machine deforming later. Bed and column guideways are ground. Operation, adjustment and maintenance are all straightforward.
Why Buyers Choose This Machine
- Wide bed gives the rigidity and strength that hold precision through a full-depth hobbing cut
- Indexing worm gear produced on a precise worm wheel machine tool and finished on a special worm rod grinding bed for high index precision
- High-quality copper worm wheel resists abrasion so index accuracy survives production use
- Precipitation heat treatment on the castings eliminates internal stress and avoids later machine deformation
- Ground bed and column guideways for accurate slide movement
- Continuous indexing method covers spur helical worm wheel and chain wheel work
- Suits large batch small batch and single production without a change of machine
Where Y31125E Gear Hobbing Machine Earns Its Place
Problems It Solves
- A worn indexing worm wheel puts a pitch error into every gear the machine cuts
- Castings that were not stress relieved deform over the first year and the accuracy goes with them
- A narrow bed flexes under hobbing load and the tooth form suffers
- Unground guideways give slide movement that is not repeatable
- A production-only machine is uneconomic to set up for a single replacement gear
- Sending gear work out puts a lead time you cannot control into a repair job
Who It Is For
- Gearbox and reduction unit manufacturers
- Gear cutting subcontract shops
- Manufacturers of worm wheel sets and chain wheels
- Machinery repair shops cutting replacement gears
- Distributors supplying gear hobbing machines to production gear shops
Application Scenarios
- Large batch hobbing of spur gears for a transmission line
- Helical gear production for drive units
- Worm wheel cutting for reduction gearboxes
- Chain wheel and sprocket cutting
- Small batch and single replacement gears in a repair shop
- Gear shops where index accuracy has to hold across long production runs
Technical Detail
Technical Features
- Continuous indexing hobbing method
- Wide bed construction for rigidity and strength
- Indexing worm gear machined on a precise worm wheel machine tool
- Worm gear finished on a special worm rod grinding bed
- High-quality copper worm wheel for abrasion resistance
- Casting parts given precipitation heat treatment
- Machine bed and column guideway ground
- Cuts cylindrical spur helical gears worm wheels and chain wheels
Specifications
| Machine type | Vertical gear hobbing machine |
|---|---|
| Models | Y31125E |
| Gear types | Cylindrical spur, helical gears, worm wheels, chain wheels |
| Indexing method | Continuous indexing |
| Table indexing worm gear | Machined on precise worm wheel machine tool and worm rod grinding bed |
| Worm wheel material | High-quality copper |
| Casting treatment | Precipitation heat treatment to eliminate internal stress |
| Guideways | Machine bed and column guideway ground |
| Production suitability | Large batch, small batch and single production |
Figures above are taken from the product information we hold. Send us your application and we will confirm the exact specification for the model quoted.
How It Is Built and What Can Be Changed
Operations Performed
- Gear hobbing
- Spur gear cutting
- Helical gear cutting
- Worm wheel cutting
- Chain wheel cutting
- Heat treatment
Materials Handled
- Cast iron
- Copper
Quality Control
- Castings given precipitation heat treatment before machining to relieve internal stress
- Indexing worm gear ground on a dedicated worm rod grinding bed and index precision verified
- Bed and column guideways ground and checked for straightness
- Machine rigidity verified under a full-depth hobbing test cut
- Test gear cut and tooth form and pitch inspected before packing
Customisation Options
- Supply voltage phase and frequency built for your market
- Hob and workholding tooling specified for your gear module and bore sizes
- Machine set up for the gear types that dominate your work
- Coolant supply arrangement specified with the machine
- Manual and control markings prepared in your working language
How It Compares With the Alternatives
| Y3150K minitype gear hobber | The Y3150K is the compact machine with an optional CNC system; the Y31125E is the wide bed machine with a ground copper indexing worm wheel for larger and longer production runs |
|---|---|
| YB3150E and YB3180 gear hobbers | Those add climb hobbing and an automatic stop so one operator handles several machines; the Y31125E leads on indexing accuracy and stress-relieved castings |
| Machines with untreated castings | Precipitation heat treatment takes the stress out of the iron before machining, so the machine does not deform and lose accuracy in its first years |
| Gear shaping | Shaping handles internal gears and gears close to a shoulder; hobbing is the faster method for external spur helical and worm wheel work in quantity |
Running the Machine
Step 1
Mount the hob and check run-out before setting the blank
Step 2
Set and check the gear blank runs true in the workholding
Step 3
Set the machine for the gear type and module you are cutting
Step 4
Take a first cut at reduced depth and check the tooth form before proceeding
Step 5
Run to full depth with coolant on the cutting contact
Step 6
Measure the finished gear by span or over pins before starting the batch
Step 7
Check indexing worm gear condition as part of scheduled maintenance
Related Applications and Guides
Heavy Equipment and Plant Maintenance
Mines quarries plantations and processing plants cannot wait for imported spares. XAIMC supplies the boring gear cutting turning and grinding machines
Gear Hobbing Explained for Buyers of Gear Cutting Machines
Gear hobbing cuts gear teeth by rolling a rotating hob against a rotating blank so that the tooth form is generated rather than copied from a formed c
Questions About Y31125E Gear Hobbing Machine
What gears will it cut?
Cylindrical spur and helical gears, worm wheels and chain wheels, by the continuous indexing method. Send us your gear drawing with module tooth count and face width and we will confirm it fits the machine.
Why does the indexing worm gear matter?
Every tooth the machine cuts is positioned by that worm gear. It is machined on a precise worm wheel machine tool and finished on a special worm rod grinding bed, and the worm wheel is high-quality copper for abrasion resistance so the index precision holds in service.
How do you stop the machine distorting over time?
The casting parts go through precipitation heat treatment, which eliminates the internal stress from casting. That is what prevents the machine deforming after it is machined and installed.
Is it suitable for single gears or only production?
Both. It is intended for large batch, small batch and single production, so a subcontract shop and a gearbox manufacturer both get use out of it.
What gear quality grade can we expect?
That depends on the hob, the blank material and the setup as well as the machine. Send us the drawing with the quality grade you need and we will confirm before you order.
Can it be built for our supply voltage?
Yes. Give us your voltage phase and frequency at enquiry and the machine is wired for your market.
What are your payment and trade terms?
FOB CFR and CIF. Payment is 30 percent by T/T on order and 70 percent before shipment, or an irrevocable L/C at sight.
Request a Quote on the Y31125E Gear Hobbing Machine
Send us the work you need it to do, the voltage on your site and the port you ship to. We will come back with the model, the tooling and the lead time.