Overhaul Case | The TK6513 Horizontal Boring Machine on a Planer Bed Has Been Fully Revived! Precision Upgrade for an Aging Heavy-Duty Horizontal Boring Machine

(1) Orbital Operation Anomaly

The three-axis guideways exhibit scratches and wear, resulting in feed motion that exhibits stick-slip and jerking. The equipment’s positioning accuracy and straightness are severely out of tolerance.

(2) Inaccurate indexing of the worktable

Worm gear and worm wear, excessive backlash in the transmission, and end-face runout exceeding specifications render multi-station precision machining unable to meet the required tolerances.

(3) Outdated equipment condition

The fuselage is rusted and paint‑peeled, the protective sheet metal has aged, and the overall appearance is dirty and disorganized—clearly failing to meet the production standards of a precision workshop.

(1) Whole-machine disassembly and nondestructive testing

Disassemble the bed, column, spindle headstock, worktable, and other major components; thoroughly remove oil and metal chips; perform comprehensive nondestructive testing on all castings; and verify that the machine’s structural rigidity is intact.

(2) Spindle System Reconfiguration

Disassemble the boring spindle slide block assembly, replace the complete set of bearings and seals, grind the gears to eliminate backlash, and correct spindle runout, thereby completely resolving cutting vibration and chatter and restoring heavy‑cutting rigidity.

(3) Precision grinding and scraping of guide rails

Repair the worn guide rail surfaces, re‑lap the shims, and adjust the pressure plate clearance to eliminate axial creep and vibration, ensuring precise and smooth long‑stroke feed.

(4) Workbench Gap Calibration

Overhaul and replace worn worm gear pairs, grind the indexing contact surfaces, calibrate end-face runout and indexing accuracy, eliminate transmission backlash, and enable multi‑angle precision machining.

(5) Fuel-Electric System Upgrade

Clean the hydraulic oil tank, replace aged valve assemblies and pipelines, and upgrade the intelligent metered lubrication system; replace all oil‑resistant shielded cables along the entire line, standardize and neatly organize wiring, and eliminate issues such as oil leaks, electrical faults, and spurious alarms.

(6) Full-machine calibration and refurbishment ：

Precision alignment and assembly, with all geometric accuracy parameters verified using a laser interferometer; the entire machine has undergone rust removal and painting, and its sheet metal components have been completely replaced, resulting in a comprehensive overhaul of both appearance and performance.