Numerical facing head

Abstract

The invention discloses a numerical control facing head, which comprises a box. A facing head moving mechanism is arranged in the box and consists of a spindle block connected with a spindle box boring spindle, a spindle sleeve is sleeved outside the spindle block, a rotary sliding mechanism is arranged between the spindle sleeve and the box, a rotating support is fixed to one end, which does not face to the spindle box boring spindle, of the spindle sleeve, a linear guide track is fixed onto the rotating support, a facing head cutter slides along the linear guide track by the aid of a guide track slider, guiding blocks are respectively disposed at planar positions of two sides of the spindle block, a vertical direction guiding groove is arranged on the inner surfaces of any one of the guiding blocks, a skewed slot is disposed on a plane on one side, which faces to the guiding block with the guiding groove, on the spindle block, a slider is arranged in the guiding groove, one end of a skewed rod is connected with the slider, the skewed rod is positioned in the skewed slot, and the other end of the skewed rod is connected with the guide track slider. The structure of the facing head can be greatly simplified, a transmission chain is shortened, accumulative errors in a transmission process can be reduced, and machining precision is enhanced.

Description

technical field [0001] The invention relates to the technical field of numerical control equipment, in particular to a numerical control flat rotary disc. Background technique [0002] The CNC flat rotary table is a machine tool accessory used on floor boring and milling machines and machining centers to process large stepped holes or rotary surfaces. It often requires two forms of motion during processing: the first is that the tool rotates around the axis of the spindle, and the second is that the tool moves radially and linearly. When machining complex-shaped convoluted surfaces and tapered holes, the tool needs a flat rotary disc to provide both rotary motion and radial linear motion. Under the combination of these two motions, the precise machining of complex convoluted surfaces can be completed. The difficulty in the design of the CNC flat rotary table is how to realize the synthesis and separation of the rotary motion of the tool and the radial linear motion to adapt...

AI Technical Summary

Problems solved by technology

This kind of flat rotating disk mainly has the following disadvantages: 1. The structure of the differential mechanism is complicated, and the transmission chain is too long, which increases the accumulated error in the transmission process, thereby affecting the machining accuracy; 2. The manufacturing cost is high.

This method uses a planetary differential mechanism, worm gear, bevel gear, rolling screw and other mechanisms, which makes the structure of the entire flat rotating disk complex, and the transmission chain is too long, resulting in a large transmission gap and affecting the machining accuracy, while the planetary gear train, worm gear, Components such as bevel gears increase the manufacturing cost and installation difficulty, and the belt drive cannot transmit high power, which may cause insufficient linear motion feed force during processing

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