CNC (Computerized Numerical Control) automatic internal grinding machine for bearing ring

Abstract

The invention relates to a CNC (Computerized Numerical Control) automatic internal grinding machine for a bearing ring. The internal grinding machine comprises a lathe body, a reciprocating worktable, a grinding wheel shaft assembly, a workpiece axle box, a grinding wheel dresser, a longitudinal feed transmission mechanism, a transverse feed transmission mechanism, a cooling system, a hydraulic lubrication system, a CNC control system host and operating panel, and an electrical control system, wherein the reciprocating worktable, the grinding wheel dresser and the workpiece axle box are arranged on the lathe body; the grinding wheel shaft assembly is arranged on the reciprocating worktable; the longitudinal feed transmission mechanism and the hydraulic lubrication system are arranged inside the lathe body; the transverse feed transmission mechanism is arranged on a grinding wheel seat; the cooling system and the electrical control system are arranged at the rear side of the lathe body; the CNC control system host and operating panel is arranged above the reciprocating worktable; and the reciprocating worktable is arranged on a guide rail of the lathe body. The CNC automatic internal grinding machine for the bearing ring, provided by the invention, has the outstanding advantages of simple and compact structure, strong static and dynamic rigidities, locating precision, good performances of anti-vibration and vibration reduction, good precision retentivity, light friction and abrasion, long service life, easiness for operation and maintenance, safety, saving energy, environment friendliness, attractive appearance and the like.

Description

technical field [0001] The invention relates to processing equipment for bearing products, in particular to an internal grinding machine for bearing rings. Background technique [0002] At present, most of the equipment used in the bearing industry for internal grinding of bearing products is ordinary internal grinding machines, which are imitation products of Soviet-style internal grinding machines in the 1950s and 1960s. There are also a small number of bearing raceway grinding machines developed in the 1970s and 1980s, whose structural performance cannot meet the current production needs of bearing products. The sudden problems in product processing are: (1) The product processing size range is too small, Generally within Ф500mm. (2) There is a lack of processing equipment for large-angle inner holes and end face raceways. (3) The positioning accuracy and rotation accuracy are low, and the dynamic rigidity is poor, resulting in the dimensional accuracy, shape and positi...

AI Technical Summary

Problems solved by technology

There are also a small number of bearing raceway grinding machines developed in the 1970s and 1980s, whose structural performance cannot meet the current production needs of bearing products. The sudden problems in product processing are: (1) The product processing size range is too small, Generally within Ф500mm

(2) There is a lack of processing equipment for large-angle inner holes and end face raceways

(3) The positioning accuracy and rotation accuracy are low, and the dynamic rigidity is poor, resulting in the dimensional accuracy, shape and position error of the processed product, and the surface accuracy cannot meet the product quality requirements, and the polishing and ultra-finishing process has to be added

(4) The rigidity of the machine tool is not enough to perform high-speed powerful grinding

(5) Friction and wear cause poor precision retention of machine tools, many faults, and low service life

(6) The positioning accuracy of the fixture is low, and the clamping method affects the dimensional accuracy and shape position accuracy of the processed product

(7) Due to the influence of structure, manufacturing precision, cooling and lubrication method, dynamic balance, etc., the grinding wheel shaft limits the speed and cannot improve the processing efficiency and surface accuracy

(10) The protection effect of the machine tool is poor, the oil tank seeps and leaks, the ground splashes cutting fluid, and the protection device cannot effectively protect the grinding wheel when it is broken

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