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Arrangement method of spindle bearing of CNC machining machine tool

Arrangement method of spindle bearing of CNC machining machine tool

Generally, the spindle components of small and medium-sized CNC machining machine tools mostly use rolling bearings (bearing) as the spindle support. At present, there are mainly three deployment methods:

1. Front support adopts double-row short cylindrical roller

Sub-bearing (bearing) and 60. In numerical control processing, the control system sends out instructions to make the cutter perform various movements that meet the requirements, and expresses the processing of technical requirements and processing requirements such as the shape and size of the workpiece in the form of numbers and letters. It generally refers to the process of processing parts on CNC machine tools. In order to improve production automation, shorten programming time and reduce CNC machining costs, a series of advanced CNC machining technologies have also been developed and used in the aerospace industry. Angular contact double row radial thrust ball bearing combination, the rear support uses radial thrust ball bearings. This deployment (deploy) method greatly improves the overall rigidity of the spindle, which can meet the requirements of powerful cutting, and is generally applied to the spindles of various CNC machine tools (attributes: automated machine tools). Cylindrical roller bearings can also be used for the rear bearing of this configuration, which further improves the radial rigidity of the rear support.

2. Front support adopts high-precision (precision) double-row orientation

Heart thrust ball bearings (bearing). In numerical control processing, the control system sends out instructions to make the cutter perform various movements that meet the requirements, and expresses the processing of technical requirements and processing requirements such as the shape and size of the workpiece in the form of numbers and letters. It generally refers to the process of processing parts on CNC machine tools. In order to improve production automation, shorten programming time and reduce CNC machining costs, a series of advanced CNC machining technologies have also been developed and used in the aerospace industry. ? NC machine tool (attribute: automated machine tool) spindle bearing deployment (deploy) mode? Radial thrust ball bearings have good high-speed performance, the maximum speed of the spindle can reach 4000r / min, but its load carrying capacity is small, only suitable for high speed and light load And precision (precise) CNC machine tool spindle. To improve the rigidity of the spindle in this deployment, the front support can be combined with four or more bearings, and the rear support can be combined with two bearings.

3. The front and rear bearings (bearing) use double-row and single-row tapered roller bearings

This bearing can  withstand large radial and axial forces, so that the spindle can withstand heavy loads, especially strong dynamic loads, good rigidity, installation and The debugging performance is good. CNC machining generally CNC machining usually refers to computer digitally controlled precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. The feed route for finishing is basically carried out along the contour of its parts. Therefore, the work of determining the feed route is to determine the feed route for rough machining and empty stroke. However, this configuration (deploy) limits the maximum speed and accuracy (accuracy) of the spindle, and is only applicable to the spindles of medium-precision, low-speed and heavy-load CNC machine tools (attribute: automated machine tools).

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