Custom Retrofitted Machinery/ Manual to Full Automation

At Rebuilders Unlimited, Inc., our team of experienced employees (well over 100 years combined!) specialize in rebuilding and retrofitting Landis thread cutting and roll forming equipment with any special requirements or custom applications that our customers may have. Old electrical controls can be replaced with modern programmable logic controllers or sophisticated CNC controls. Please see our standard machine rebuilding services below and if you have any questions at all, please contact us.

Machine Rebuild Protocol

(click on thumbnail to enlarge)

Step 1- Disassembly & Cleaning
Machine Disassembly Machine Disassembly	Upon arrival at our rebuild facility the entire machine will be completely disassembled and shelved according to sub-assembly. Then each individual sub-assembly will be taken from the shelf and placed in an ultrasonic cleaning tank which uses a solution of water that is mixed with a food grade acid and heated to approximately 150 degrees. Then sound waves scrub the parts clean. When components are removed from the tank all dirt, paint and oil have been scrubbed free. We use this method in an effort to make our company more environmentally friendly.
Step 2 - Inspection
Full Machine Inspection Full Machine Inspection	After disassembly and cleaning we place identification tags on the components and inspect for wear. If we determine that a part needs replaced due to wear, we will have our in house draftsman reverse engineer the part on a computer aided drafting system. We then send the drawing that is accompanied with a work order to our machine shop to have the replacement parts manufactured using materials that are of sufficient strength and hardness using standard engineering practices. If we are in doubt about the material or design, we contact a local engineering company for their input. We have a strong working relationship with this company and use their expertise often. After the part is manufactured, it is then sent to quality control for final inspection before being released to assembly. Items such as bearings, bushings, seals, wipers, gaskets, hoses, belts, lubrication tubing, pneumatic tubing, coolant valves, and coolant plumbing are automatically replaced and do not require preliminary inspection. However we do give a thorough inspection upon receiving all purchased items into stock.
Step 3 - Assembly
Preparation for Machine Assembly Preparation for Machine Assembly	After all manufactured and purchased parts have been given approval from our inspectors, the major castings and all the machine components are placed in work cells on our assembly floor. Under normal conditions, we assemble the headstocks, gearboxes or spindle housings first. Assemble is done in a clean environment that is kept as free as possible from abrasives, dirt and dust. Once all torque and bearing pre-load requirements are finished, the headstocks are then placed on machine. We then scrape in the bedways to a precision surface plate if the machine has cast iron ways. If the machine has hardened and ground ways they are simply installed on the machine after being reground or replaced with new. The carriages that have been remachined for squareness and to remove wear are scraped in to the bed ways. Then carriages are aligned with spindle by conventional practices or if application calls for more precise alignment, a laser will be used. After proper alignment is achieved all the rest of the machine's components and subassemblies are carefully installed.
Step 4 -Testing
Performance & accuracy Requirements Performance & accuracy Requirements	After machine is completely assembled, we set the machine up with all the proper tooling requirements to do the operation or job the customer wants done. We require test pieces from the customer using same material that the machine will be running on a daily basis. After set-up and adjustments have been done and all performance and accuracy requirement have been successfully met, the machine will be ready for painting preparation.
back to top Step 5- Paint
Painting & Detailing Painting & Detailing	The machine will be very thoroughly cleaned with standard cleaning chemicals such as recycled paint thinners, which do a very adequate job of making sure all surfaces that get painted are clean and dry. We mask all machined surfaces that do not get painted with a combination of masking tape, masking paper and aluminum foil. We particularly like to use aluminum foil when we can because it is very easy to remove after painting. We always give one coat of primer and two coats of paint unless the customer's requirements state otherwise. One painting is complete all required safety decals and plagues will be put into place. Then all touching and detailing that are needed will be done.
Step 6 - Shipment Preparation
Shipping, Crating & Protecting Rebuilt Machine Shipping, Crating & Protecting Rebuilt Machine	When the customer gives final inspection and approval, the machine will be prepared for shipment in accordance with the customer's requirements. All export sales require the machine to be properly crated to provide maximum protection for overseas shipping. All crates are properly marked for contents and handling instructions.
Step 7 - Waste Removal
EPA approved containers for proper waste removal EPA approved containers for proper waste removal	All our waste such as sludge, oil, grease, wastewater, cleaning chemicals are stored in EPA approved containers. We have contracted a Licensed Industrial Waste removal company to process our waste and have been using companies that specialize in that field for the past 20 + years. We have all our waste classifications on file, additionally we have record of all waste removed in the past 7 years. We also recycle cardboards, aluminum, steel, irons, copper, brass, and packing materials such as Styrofoam pellets.

back to top