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High-precision machine tool specialized for center-hole drilling, ensuring workpiece coaxiality accuracy.
Release time:
2026-09-12 13:01
Source:
Juxin Machine Tool
A high-precision machine tool specially designed for drilling center holes, featuring a highly rigid structure and dual‑end synchronous machining to ensure stable coaxiality of shaft components and minimize workpiece runout. Juxin Machine Tool specializes in manufacturing high‑precision center‑hole machines.
The foundation of precision in subsequent operations such as cylindrical grinding and finish turning of shaft-type parts is the center hole. Once the center hole becomes eccentric, the workpiece’s coaxiality deteriorates, resulting in excessive runout after machining and ultimately leading to scrap. To ensure stable production of precision shaft components, High-precision machine tool for drilling center holes It is a key piece of equipment in the precision shaft‑machining process. The high‑precision center‑drilling machine developed by Juxin Machine Tool has been optimized across multiple dimensions—machine structure, workholding fixtures, and control system—to ensure that the coaxiality of the workpiece’s center hole meets specifications.
Why is coaxiality so critical for shaft-type workpieces?
The center hole serves as the positioning datum; however, if the two end center holes are not concentric, the subsequent outer‑diameter machining will result in uneven material allowances, leading to excessive radial runout of the finished shaft and compromising assembly accuracy and service life. This is particularly critical for high‑end components such as motor shafts, precision lead screws, and hydraulic piston rods, which demand stringent coaxiality tolerances that ordinary lathes and basic drilling machines struggle to consistently meet over the long term.
Core Design of High-Precision Center-Drilling Machine Tools Ensuring Coaxiality
- High-rigidity cast iron bed frame The monolithic cast‑iron bed boasts excellent vibration resistance, minimizing vibrations during drilling and preventing workpiece displacement, thereby ensuring stable positioning of the center hole.
- Double-ended synchronous centering machining The machine features synchronized feed of the left and right power heads, allowing the workpiece to be clamped once and both end centers to be machined simultaneously, thereby eliminating positioning errors introduced by secondary clamping—this is the most critical design element for ensuring coaxiality.
- Precision self-centering fixture The fixture automatically locates the workpiece center, ensuring high clamping repeatability; each workpiece is positioned using a unified datum, eliminating clamping misalignment.
- Servo CNC feed system The servo system precisely controls the feed depth, ensuring smooth feeding and preventing hole‑shape distortion caused by uneven feed rates. The centering hole’s angle and depth exhibit high consistency.
Applicable processing scenarios
High-precision center-drilling machines are primarily used in the production of precision components, such as precision lead screws, motor shafts, oil pump shafts, precision pins, and instrument‑scale shafts. They are well suited for orders with stringent acceptance criteria for runout and coaxiality, thereby meeting OEM plant‑audit requirements.
Small Tips for Use and Maintenance
To maintain high precision over the long term, in addition to the machine’s inherent performance, routine maintenance is equally critical: regularly inspect fixture wear, guide‑rail lubrication, and center‑drill condition; replace cutting tools as needed; and perform periodic equipment calibration.
Juxin Machine Tool can customize high-precision center-drilling machines tailored to customers’ accuracy specifications, offering workpiece trial cuts to verify coaxiality and machining performance in advance. For challenging center-hole machining of precision shaft components, please contact us to discuss your machining requirements.
Related News
How can efficiency be improved in the mass production of shaft components? This article examines optimization strategies from the perspectives of process routing, auxiliary time, machine tool design, workforce allocation, and automated production lines, and also outlines the applicable scenarios for Juxin Machine Tool’s specialized CNC equipment.
What equipment is used for the mass production of shaft-type parts? This article examines the applicable scenarios of CNC lathes, dedicated machine tools, and automated machining solutions, based on turning, end-face milling, center-hole drilling, and automation requirements, and outlines the selection criteria for relevant equipment from Juxin Machine Tool.
How should machining equipment be selected for batch production of shaft-type components? This article examines the applicable scenarios of conventional CNC lathes, specialized machine tools, twin‑station twin‑spindle vertical CNC lathes, and center‑drive twin‑head CNC lathes, focusing on processes such as end-face machining, center‑hole drilling, external cylindrical turning, threading, and dual‑end machining, thereby helping enterprises to design efficient batch‑production strategies.
What should you do if shaft‑type machining equipment takes up too much floor space?
Excessive floor space requirements, insufficient workshop capacity, and the inability to scale production are common pain points for most machining enterprises. The Juxin dual‑station, dual‑spindle CNC vertical lathe features an ultra‑compact design, occupying only 5 m² per unit—replacing two conventional lathes and reducing space needs by 70%—thus providing an ideal solution to the challenge of limited shop‑floor space in shaft‑machining operations.
How can efficiency be improved in the mass production of shaft components?
The key to boosting efficiency in high-volume shaft machining lies not in shortening cycle times or repeatedly reorienting and aligning workpieces, but in streamlining processes, simplifying equipment, and reducing the workload on operators. The Juxin dual‑station, dual‑spindle CNC vertical lathe can replace two machines with a single unit, enabling simultaneous machining at both stations, thereby significantly cutting handling, labor, and facility‑space costs. Moreover, substituting turning for grinding further enhances process efficiency.
What turning equipment is used for batch machining of shaft-type parts?
For the mass production of shaft-type components, the Juxin dual‑station, dual‑spindle CNC vertical lathe is the preferred choice. Unlike conventional single‑station vertical lathes or the cumbersome arrangement of multiple standard lathes, its two independent machining units can simultaneously perform both forward and reverse operations on a workpiece, occupying less floor space, reducing labor costs, and offering superior rigidity—enabling hard turning of quenched parts. It is an efficient, purpose-built machine for high‑volume shaft‑part manufacturing.
What equipment is used for the mass production of shaft-type parts?
For the mass production of shaft-type parts, equipment selection should not focus solely on the machining speed of a single machine tool; it must also take into account the total number of machines, floor space requirements, staffing levels, workpiece handling, and the organization of forward and reverse operations. For shaft components that require both forward and reverse machining steps, using two conventional lathes to perform these operations separately would not only necessitate two machines but also create challenges related to workpiece transfer and personnel allocation. A dual‑station, dual‑spindle CNC vertical lathe integrates two independent machining units—each equipped with its own spindle, turret, and CNC system—into a single machine, enabling separate processing of different operations on the same workpiece according to the manufacturing process. In mass production of shaft-type parts, this approach allows for a re‑optimized production layout across three key dimensions: equipment count, available shop floor space, and workforce configuration.
Can a machine tool simultaneously machine both ends of shaft-type parts?
Can a single machine tool simultaneously turn both ends of a shaft‑type part? The Juxin dual‑station, dual‑spindle CNC vertical lathe replaces two conventional lathes in one unit, streamlining the machining process, reducing floor space by 70%, cutting handling time, and lowering labor costs by 50%, making it ideal for high‑volume, efficient production of shaft‑type components.
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