Multi-station numerical control system dedicated for sculpture

Abstract

The invention discloses a special control system for multi-station numerical control engraving, which consists of hardware and software; wherein the hardware adopts an open numerical control system composed of an industrial control computer, a motion control card and a digital actuating motor, which are connected in turn via data wires, the industrial control computer and the motion control card constitute the core of the open numerical control system, the industrial control computer takes charge of management on a supervisory computer, and the motion control card controls the motion of a stepping motor with three axes at least or the digital actuating motor; and the software utilizes Visual C++ to compile a multi-threading application program operated under Windows2000 / XP operating systems. The invention can fulfill tool-setting processing of multi-station parts in cooperation with a multi-station numerical control engraving tool-setting device, and is provided with a vivid and friendly human-computer interface, powerful numerical control processing functions and stable and reliable systems; thereby the invention can select any engraving head to work or not to work, and can resolve the problem of inconsistent forward and reverse gap among a plurality of rotary shafts of cylindrical conical surface multi-station engraving.

Description

technical field [0001] The invention relates to the field of engraving, in particular to a special control system for multi-station numerical control engraving. Background technique [0002] At present, CNC mechanical engraving machines are widely used in various industries. Ordinary CNC engraving machines only have one engraving head, which can engrave various characters, curves and patterns on cylindrical surfaces, conical surfaces, and planes. Usually the engraving machine can only complete a single function, such as engraving on a plane but not on a cylindrical surface. You can engrave on cylindrical surfaces but not on conical surfaces or engrave on flat surfaces. At present, there is no such fully functional engraving machine and its control system. The cost of a single CNC engraving machine is high, and the processing efficiency is not high. [0003] Using multi-station engraving heads and multi-station fixtures can achieve the efficiency of 5-8 sets of CNC engravi...

AI Technical Summary

Problems solved by technology

Existing multi-station engraving machines mostly use floating spindles and manually fine-tune the Z-axis to correct the plane. This method is inefficient and not suitable for fully automatic CNC engraving, and the accuracy cannot be guaranteed due to the heterogeneity of the workpieces.

There is no related technology for multi-station engraving on cylindrical and conical surfaces.

[0005] The second problem is that in the multi-axis engraving of cylindrical or conical surfaces, the mechanical forward and reverse clearances of each rotating axis are different, resulting in clearance compensation errors.

The gap compensation function of the general CNC system can correct the rotary axis equal to the setting error, but the gap error compensation of other rotary axes not equal to the setting error cannot be compensated.

The impact of the gap error on the engraving quality of the workpiece is mainly due to the irregular deflection of the text pattern when the cylindrical conical surface is engraved with the text pattern

When engraving characters and patterns, because the characters and patterns are composed of many small line segments, the rotation axis rotates back and forth under the command. Due to the incorrect compensation of the gap error, the reciprocating movement cannot be accurately positioned, resulting in irregular offset deformation of the characters or patterns.

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