CN106802628A - Five axis holes process universal post processing method - Google Patents

Abstract

The present invention provides a kind of postpositive disposal method specifically designed for the processing of five axis holes, and five-axle linkage hole machined mode is converted into five axle directional hole processing modes.Two shortcomings of five-axle linkage hole machined processing mode can effectively be solved.1st, major lathe manufacturers, although machine tool structure is different, digital control system is different, but is provided which five axle oriented machining schemes of unification, wherein most widely used is Eulerian angles inclined plane fabrication cycles.Therefore the method that the present invention is provided has stronger versatility.2nd, the processing mode of five axles orientation, it is possible to use hole machined is circulated, such that it is able to realize in hole machined functions such as bottom hole stop, the settings of bore hole withdrawing.Therefore the method that the present invention is provided has great importance.

Description

Five axis holes process universal post processing method

Technical field

The present invention relates to multiaxis NC maching field, specifically five axis holes processing universal post processing method.

Background technology

With the fast development of digital control processing industry, 5-shaft linkage numerical control process technology is widely used to Aero-Space, In the processing of the high-accuracy complex parts of the industry such as shipbuilding, automobile, energy.Five-axis linkage machine tools are compared to three axles and four axle machines Bed, increased two rotary shafts so that cutter axis orientation is more flexible, can realize that cutter shaft is processed at any angle in theory.However, The Path source file of CAM Software Creates can not directly drive Digit Control Machine Tool.

Cutter location file is converted into machine tool numerical control system by postpositive disposal can be recognized and correctly drive machine tool motion The processing procedure of NC codes.General postpositive disposal, such as patent a kind of " universal post processing method for multi-axis numerical control machine tool (Shen Please number：201110324388.7) " and patent " 5-shaft linkage numerical control processing postpositive disposal method (application number： 201110065169.1) " there is provided the postpositive disposal basic skills of 5-shaft linkage numerical control program, but all five axis holes are not added Work does specially treated.

In the part of the industries such as Aero-Space, weapons, through being commonly present Multi-angle hole system.Using general postpositive disposal, CAM softwares can be only generated the hole machined numerical control program of five-axle linkage, and this processing mode has two shortcomings：1st, five-axle linkage is Towards the postpositive disposal of specific lathe, machine tool structure is different, and required postpositive disposal is different, and versatility is poor；2nd, hole can not be generated Fabrication cycles numerical control program, so as to can not realize in functions such as bottom hole stop, the settings of bore hole withdrawing.

The content of the invention

For the deficiency of existing universal post processing method, the present invention proposes a kind of five axis holes processing general postprocessing Method, changes into the hole machined mode of five-axle linkage five axles orientation and uses the mode of hole machined circulation.Five-axle linkage hole adds Work postpositive disposal principle is：The information of each point position is processed in order, and correspondence lathe knot is calculated by the unit vector of a position The rotary shaft amount of spin of structure, then calculate postrotational displacement compensation amount and be superimposed with former coordinate value, so as to obtain three positions join Number and two angle parameters.Five axles orient hole machined postpositive disposal principle：Set up master coordinate system and subcoordinate system, master coordinate system It is Cutter coordinate system, then master coordinate system is rotated with Eulerian angles XYZ orders, makes Z axis parallel with hole point position unit vector, so that Subcoordinate system is obtained, and calculates three rotation angle parameters, the i.e. relation of master coordinate system and subcoordinate system, recycle hole point position Coordinate value and three rotation angle parameters under main Cutter coordinate system calculate coordinate of a position under sub- Cutter coordinate system that portal Value.The drilling loop parameter in cutter location file is then demultiplex out, so that the whole parameters required for obtaining five axles orientation hole machined, Complete rearmounted processing procedure.The present invention provides a kind of general five axis hole for being suitable for various machine tool structures and system for technologist Rearmounted method is processed, the artificial link for calculating angle is reduced, is conducive to improving the numerical control programming degree of accuracy and efficiency.

The technical scheme is that：

A kind of five axis holes processing universal post processing method, it is characterised in that：Comprise the following steps：

Step 1：Read cutter location file；

Step 2：Determine whether that hole machined is operated, if it is, next step is transferred to, if it is not, using universal post Treatment is processed this section of cutter location file；

Step 3：Judge whether cutter shaft changes, in the event of changing, go to step 4, if do not changed, go to Step 6；

Step 4, using generating tool axis vector, calculate Eulerian angles；

Step 5, output inclined plane circulation, the Eulerian angles that step 4 is calculated are circulated as parameter assignment to inclined plane；

Step 6, the coordinate value X, Y, Z that calculate subcoordinate system's lower opening site；

Step 7, delivery outlet fabrication cycles program, the Z values that step 6 is calculated are used as hole machined initial surface parameter assignment Give hole machined circulation；

The X that step 8, output step 6 are calculated, Y value, and call hole machined to circulate；

Step 9, judge whether hole circulation terminates, if it is, go to step 10, if not, 3~step 9 of repeat step；

Step 10, determine whether last cutter spacing, if it is, step 11 is gone to, if not, going to step 2；

Step 11, EP (end of program).

Beneficial effect

The present invention provides a kind of postpositive disposal method specifically designed for the processing of five axis holes, and five-axle linkage hole machined mode is turned Turn to five axle directional hole processing modes.Two shortcomings of five-axle linkage hole machined processing mode can effectively be solved.1st, it is major Lathe manufacturer, although machine tool structure is different, digital control system is different, but is provided which five axle oriented machining schemes of unification, wherein Most widely used is Eulerian angles inclined plane fabrication cycles.Therefore the method that the present invention is provided has stronger versatility.2nd, five The processing mode of axle orientation, it is possible to use hole machined is circulated, such that it is able to realize adding in holes such as bottom hole stop, the settings of bore hole withdrawing Work function.Therefore the method that the present invention is provided has great importance.

Brief description of the drawings

Fig. 1：Five axis holes process universal post processing method flow chart；

Fig. 2：Example bore cutter rail schematic diagram；

Fig. 3：Example drilling loop parameter schematic diagram.

Specific embodiment

The invention will be further described with specific embodiment below in conjunction with the accompanying drawings：

Example condition (software：Siemens NX8.5；Lathe：Moral Margie DMU100MONIBLOCK；Digital control system：Hai De Chinese Itnc530)

1st, cutter location file is read in

For example：

CYCLE/DRILL,RAPTO,10.0000,FEDTO,0.0000,CAM,1,RTRCTO,10.0000,MMPM, 250.0000,OPTION

GOTO/115.4228,-25.5000,-22.5772,-0.7071068,0.0000000,0.7071068

GOTO/75.5772,-25.5000,-22.5772,0.7071068,0.0000000,0.7071068

CYCLE/OFF

END-OF-PATH

2nd, by CYCLE/DRILL, for drilling is circulated.

3rd, judge whether cutter axis orientation changes, initial generating tool axis vector is【0,0,1】.

By first generating tool axis vector【-0.7071068,0.0000000,0.7071068】Understand, cutter axis orientation there occurs change Change.

4th, Eulerian angles are calculated.

Set rotational order makes cutter shaft be overlapped in projection vector and the X-axis forward direction of X-Y plane to turn C degree about the z axis, then further around Postrotational coordinate system Y-axis turns B degree so that cutter shaft and Z axis forward direction overlap, it can thus be appreciated that 0<=C<360,0<=B<=180.

According to principle of coordinate transformation, initial generating tool axis vector T and hole position generating tool axis vector T^XBetween relation be：

Rot (C) × Rot (B) × T=T^X

I.e.：

Can be obtained according to above formula：

CosB=k

CosC=i/sinB

SinC=j/sinB

Finally try to achieve：

(as k=0, it is known that cutter shaft is in x-y plane, so B=90)

Work as j>When 0：C=arctan (j/i)；

Work as j<When 0：C=arctan (j/i)+180；

As j=0：If i>0, C=0, if i<0, C=180；

As i=0, it is known that cutter shaft is in y-z plane, so working as j>When=0, C=90；Work as j<When 0, C=270；

Work as k=0, and during i=0, it is known that j=+1 or j=-1, as j=+1, B=90, C=90；As j=-1, B= 90, C=270；

The generating tool axis vector in the first hole is【-0.7071068,0.0000000,0.7071068】

Because j=0 and i<0, so C=180.

5th, Heidenhain system tilt face fabrication cycles PLANE SPATIAL are exported, the Eulerian angles that will be calculated are assigned to SA, SB, SC.

…PLANE SPATIAL SPA+0.0SPB+45.SPC+180TURN F+500SEQ-TABLE ROT

6th, the coordinate value of new coordinate system lower opening initial point is calculated.

Coordinate system transformation matrix

Coordinate points after conversion

Former coordinate system coordinate points

T × X=X0

I.e.：

X=T^-1×X0

Obtain：

X=cos (C) * cos (B)/(cos (C) ^2*cos (B) ^2+sin (C) ^2*cos (B) ^2+sin (C) ^2*sin (B) ^2+cos(C)^2*sin(B)^2)*x0+sin(C)*cos(B)/(cos(C)^2*cos(B)^2+sin(C)^2*cos(B)^2+ sin(C)^2*sin(B)^2+cos(C)^2*sin(B)^2)*y0-sin(B)/(cos(B)^2+sin(B)^2)*z0；

Y=-sin (C)/(cos (C) ^2+sin (C) ^2) * x0+cos (C)/(cos (C) ^2+sin (C) ^2) * y0；

Z=cos (C) * sin (B)/(cos (C) ^2*cos (B) ^2+sin (C) ^2*cos (B) ^2+sin (C) ^2*sin (B) ^2+cos(C)^2*sin(B)^2)*x0+sin(C)*sin(B)/(cos(C)^2*cos(B)^2+sin(C)^2*cos(B)^2+ sin(C)^2*sin(B)^2+cos(C)^2*sin(B)^2)*y0+cos(B)/(cos(B)^2+sin(B)^2)*z0；

In this example：X0=115.4228, y0=-25.5000, z0=-22.5772, B=45, C=180 substitute into above formula, Obtain：

X=-65.6518

Y=25.5000

Z=-97.5807.

7th, delivery outlet fabrication cycles, the coordinate z values that step 6 is calculated are assigned to Q203.

The Q200=10.Q201=0.Q206=250.Q202=0.Q210=0 Q203=- of CYCL DEF 200 97.5807 Q204=10.Q211=0.

8th, the hole program is exported, coordinate value is the x that step 6 is obtained, y values.

L X-65.652Y25.5FMAX M99。

9th, judge whether hole machined circulation terminates, if it is not, go to next hole position, the step of repeat 3~8；

PLANE SPATIAL SPA+0.0SPB+45.SPC0.TURN F+500SEQ-TABLE ROT

The Q200=10.Q201=0.Q206=250.Q202=0.Q210=0 Q203=37.4767 of CYCL DEF 200 Q204=10.Q211=0.

L X69.4056Y-25.5000R0FMAX M99。

10th, last cutter spacing is determined whether, if it is, step 11 is gone to, if it is not, going to step 2.By END-OF- PATH understands to be last cutter spacing, goes to step 11.

11st, EP (end of program).

Claims (1)

1. a kind of five axis hole processes universal post processing method, it is characterised in that：Comprise the following steps：

Step 1：Read cutter location file；

Step 2：Determine whether that hole machined is operated, if it is, next step is transferred to, if it is not, using general postprocessing This section of cutter location file is processed；

Step 3：Judge whether cutter shaft changes, in the event of changing, go to step 4, if do not changed, go to step 6；

Step 4, using generating tool axis vector, calculate Eulerian angles；

Step 5, output inclined plane circulation, the Eulerian angles that step 4 is calculated are circulated as parameter assignment to inclined plane；

Step 6, the coordinate value X, Y, Z that calculate subcoordinate system's lower opening site；

Step 7, delivery outlet fabrication cycles program, the Z values that step 6 is calculated are as hole machined initial surface parameter assignment to hole Fabrication cycles；

The X that step 8, output step 6 are calculated, Y value, and call hole machined to circulate；

Step 9, judge whether hole circulation terminates, if it is, go to step 10, if not, 3~step 9 of repeat step；

Step 10, determine whether last cutter spacing, if it is, step 11 is gone to, if not, going to step 2；

Step 11, EP (end of program).