Method for achieving rotated tool center point function in four-shaft horizontal processing center by macroprogram

A machining center and macro program technology, applied in the direction of program control, electrical program control, general control system, etc., can solve the problems of reducing the versatility of NC programs, errors in processing results, and increasing the difficulty of clamping and alignment, and achieve alignment Convenience, cost reduction, and good versatility

Active Publication Date: 2019-11-05
SHENYANG LIHANGFA PETROCHEM MACHINERY EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Compared with the 4-axis horizontal machining center (without tool nose following (RTCP) function), when running a 4-axis program, the origin of the workpiece coordinate system (WCS) must be placed on the rotation center of the machine table, otherwise the machining result will appear error, which not only increases the difficulty of clamping and alignment, but also reduces the versatility of NC programs

Method used

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  • Method for achieving rotated tool center point function in four-shaft horizontal processing center by macroprogram
  • Method for achieving rotated tool center point function in four-shaft horizontal processing center by macroprogram
  • Method for achieving rotated tool center point function in four-shaft horizontal processing center by macroprogram

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Experimental program
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Embodiment

[0039] Measure the X coordinate and Z coordinate (relative to the reference point of the tool length) of the machine tool table rotation center in the mechanical coordinate system (MCS), and write it into the macro program as a constant. The measurement results here are 111.111 and 333.333;

[0040] Write the above-mentioned "G54→G57" part of the coordinate system transformation command into macro program 1, write the "G57→sub-coordinate" part of the coordinate system transformation command into macro program 2, and then store it in the "NC"→"subroutine" directory of the machine tool Next, the main instructions of the two macro programs (replace $AA_IW[B] in 4) with R11) are shown in Table 1 and Table 2;

[0041] Table 1

[0042]

[0043] Table 2

[0044]

[0045]Select any position of the machine tool workbench to clamp the workpiece. In order to verify the tool tip following (RTCP) function, deliberately stagger the center of rotation of the machine tool workbench, an...

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Abstract

The invention belongs to the technical field of numerical control processing, and particularly relates to a technical method for achieving a rotated tool center point function in a four-shaft horizontal processing center by a macroprogram. A required microprogram is compiled by employing a corresponding system variable according to a Siemens840Ds1 numerical control system platform, the displacement deviation of each point in an automatic compensation numerical control program is achieved by calling the microprogram, so that the rotated tool center point (RTCP) function is achieved on the four-shaft horizontal processing center.

Description

technical field [0001] The invention belongs to the technical field of numerical control machining, and specifically relates to a technical method for realizing the tool tip following (RTCP) function of a four-axis horizontal machining center by using a macro program. Background technique [0002] RTCP is Rotated Tool Center Point, which is what we often call the tool tip following function. In five-axis machining, when pursuing the trajectory of the tool tip point and the attitude between the tool and the workpiece, additional motion of the tool tip point is generated due to the rotary motion. The control point of the CNC system often does not coincide with the tool tip point (such as figure 1 ), so the CNC system should automatically correct the control point to ensure that the tool tip point moves according to the commanded trajectory. [0003] The function of tool tip following (RTCP) appeared with the advent of high-end five-axis machining centers, and currently it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/19G05B19/4093
CPCG05B19/19G05B19/40937G05B2219/35349G05B2219/32161
Inventor 刘诚冯春光张立湖袁慧婧吴锰孙鹏高云鹏付腾
Owner SHENYANG LIHANGFA PETROCHEM MACHINERY EQUIP MFG CO LTD
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