Vertical electric numerical control knife rest

Abstract

The invention relates to a vertical electric numerical control knife rest, belonging to the field of numerical control knife rest. The numerical control knife rest is provided with a power delivery mechanism, a preliminarily locating mechanism, a precisely locating mechanism and a locking mechanism; a square knife table and a base are arranged up and down; screw sets are arranged in the centers of the base and the square knife table; the screw sets match with the base by a steel-backed bearing; a driving disc is connected with the side of one end of the screw set; a connecting disc is arranged outside the driving disc; a worm gear and a worm drive pair are installed at the side of the other end of the screw set; a movable gear disc is arranged between the inner side of the square knife table and the outer side of the screw set; the movable gear disc matches with the screw sets by a helical structure; and the movable gear disc is connected with the square knife table through the connecting disc. The vertical electric numerical control knife rest is suitable for economical numerical control lathe; and the vertical electric numerical control knife rest is rotated by using a torque motor, pre-located by a preliminarily locating pin, precisely located by a triple gear and locked in a lifting manner by rectangular threads. The knife rest solves the problem that the knife rest in theprior art has poor rigidity, poor waterproof property, low power delivery efficiency, high preliminarily locating fault rate, complex structure and poor processing and assembling process, and the like.

Description

technical field [0001] The invention relates to the field of numerical control tool holders, in particular to a vertical electric numerical control tool holder used in a numerical control lathe. Background technique [0002] At present, the tool holders equipped with economical CNC horizontal lathes are mainly vertical electric CNC tool holders. The CNC tool post works in the harshest environment of the CNC lathe. The vibration of cutting, the strong impact of chip breaking cutting, the frequent indexing of the tool post, the heat conduction of the cutting process, etc. require the CNC tool post to have high comprehensive mechanical properties. The market demand for economical CNC horizontal lathes is huge, which requires that CNC tool holders can be mass-produced quickly. The current domestic vertical electric CNC tool post has the following disadvantages: [0003] 1. During the cutting process, the impact resistance is poor, the rigidity is poor, and the parts with high ...

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Problems solved by technology

[0003] 1. During the cutting process, the impact resistance is poor, the rigidity is poor, and the parts with high processing precision cannot meet the requirements of use

[0004] 2. The waterproof performance of the knife holder is poor: the internal parts of the knife holder are corroded, the accuracy of the knife holder is not accurate, etc.

[0005] 3. The performance of the initial positioning structure is poor: the phenomenon of clamping the initial positioning pin often occurs

[0006] 4. The transmission mechanism overlaps with the locking mechanism. It is difficult to ensure that the central surface of the worm gear and worm drive in the transmission mechanism is within the tolerance, which seriously affects the mass production of products, and at the same time seriously reduces the transmission efficiency of the motor, resulting in the locking of the movable sprocket. Insufficient force seriously affects the accuracy of the tool holder

[0007] 5. In the transmission mechanism, the connecting mechanism between the screw sleeve and the movable toothed plate, which ensures that the movable toothed plate is raised to a certain height and then rotates—the transmission plate, each manufacturer is equipped with or uses an end tooth adjustment mechanism, which seriously affects the output efficiency of the product

[0008] 6. The performance of the preloading method of the worm support bearing is poor, the failure rate of the bearing is high, and the power transmission efficiency is low

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