CN103624304B - The processing method of the space circular arc groove of Axial changes - Google Patents
The processing method of the space circular arc groove of Axial changes Download PDFInfo
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- CN103624304B CN103624304B CN201310603550.8A CN201310603550A CN103624304B CN 103624304 B CN103624304 B CN 103624304B CN 201310603550 A CN201310603550 A CN 201310603550A CN 103624304 B CN103624304 B CN 103624304B
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Abstract
The processing method of the space circular arc groove of Axial changes relates to the space circular arc slot machining field of trolley coach bogie, this processing method is when circular interpolation, circular arc is divided into some line segments, adopt linear interpolation mode, along the axial direction feeding parallel with cutter in processing plane, the processing of implementation space circular arc, during interpolation, system calculates tool radius parameter automatically, solve Axial changes and cause system cannot calculate a difficult problem for tool radius and axial direction Interpolation Spaces circular arc, both improve efficiency, in turn ensure that crudy.Be particularly useful for space or cutter in particular cases restricted, the arc machining mode of circular interpolation cannot be carried out in the direction perpendicular to processing plane.
Description
Technical field
The present invention relates to the space circular arc slot machining field of trolley coach bogie, be specifically related to a kind of processing method of space circular arc groove of Axial changes.
Background technology
In work pieces process, circular interpolation is the process of often application, and traditional handicraft adopts G02(clockwise arc/circle to cut), G03(counterclockwise arc/circle cutting) mode Machining Arc.And under special circumstances, due to space or cutter restriction, circular interpolation cannot be carried out in the direction perpendicular to processing plane, and now can only along the axial direction feeding parallel with cutter in processing plane, Machining Arc.Because axially interpolation relates to the continuous change of tool length compensation, in digital control system, the Machining Instruction of given correspondence the processing of this type of technique cannot be realized.
As depicted in figs. 1 and 2, process crotch middle part in two flap seats, because in two flap seats, crotch spacing is too small, main shaft cannot rotate to be processed to be processed vertical angle, and the traditional handicraft of processing similar position divides briefing as follows:
1, when the radius of to be processed arc groove 1 is less than 25mm, technique is as follows: first adopt the level trough 2 beyond slotting cutter Machining Arc groove 1, adopts the rose cutter that radius is identical with arc groove 1 radius to the position back chipping process of arc groove 1 afterwards.
2, when the radius of to be processed arc groove 1 is greater than 25mm, there is no the rose cutter of standard for the back chipping process at arc groove 1 position, now cannot adopt above-mentioned technique.Traditional handicraft is this position adopting single-piece work flap seat, and the flap seat assembly welding processed two is afterwards on workpiece, and now by the impact of welding deformation, this spot size error of flap seat is larger.
Therefore, due to space constraint or cutter restriction, traditional handicraft cannot carry out circular interpolation in the direction perpendicular to processing plane, causes working (machining) efficiency low, affects the process difficulties of workpiece quality.
Summary of the invention
Cannot perpendicular to processing plane direction Machining Arc class workpiece, and then cause working (machining) efficiency low to solve traditional handicraft, affecting the process difficulties of workpiece quality, the invention provides a kind of processing method of space circular arc groove of Axial changes.
The technical scheme that technical solution problem of the present invention is taked is as follows:
The processing method of the space circular arc groove of Axial changes comprises the steps:
Step one, with the outward flange starting point of arc groove to be processed for initial point O, milling cutter horizontal radial direction of feed is X-axis, and cutter spindle is Z axis to direction of feed, and the vertical radial feed direction of milling cutter is Y-axis, sets up rectangular coordinate system in space; The machined parameters of definition arc groove, this machined parameters comprises arc radius R, circular arc starting point radian value, circular arc terminal radian value, circular arc radian incremental value θ, milling cutter length, milling cutter radius, circular arc X-axis starting point coordinate, circular arc X-axis terminal point coordinate;
Wherein, above-mentioned circular arc radian incremental value θ is the fixed value calculated according to the total radian measure alpha of the circular arc of arc groove to be processed (α≤90 °) and milling cutter specification; Above-mentioned circular arc starting point radian value is 0 °, and above-mentioned circular arc terminal radian value equals the total radian measure alpha of circular arc;
The trigonometric function relation of step 2, arc radius R, circular arc radian incremental value θ and right angled triangle according to arc groove to be processed calculates first processing stand A
1coordinate; Milling cutter starting point is positioned at origin of coordinates O place, first controls milling cutter along line segment OA
1direction enters A by initial point O work
1after point, then control milling cutter along X-direction work and enter X-axis terminal point coordinate place, realize the ground floor milling of arc groove;
The trigonometric function relation of step 3, arc radius R, circular arc radian incremental value θ and right angled triangle according to arc groove to be processed calculates the n-th processing stand A
nthe coordinate of (n>=2 and n is integer), after judging this step processing, whether total radian of arc groove is less than or equal to circular arc terminal radian value, if so, then enters step 4; If not, then terminate processing, and then complete the processing method of space circular arc groove of Axial changes;
Step 4, milling cutter starting point is positioned at previous step processing after (n-1)th processing stand A obtaining
n-1place, first controls milling cutter along line segment A
n-1a
ndirection is by A
n-1point work enters A
nafter point, then control milling cutter along X-direction work and enter X-axis terminal point coordinate place, realize the n-th layer milling of arc groove, and then perform step 3.
The invention has the beneficial effects as follows: this processing method is when circular interpolation, circular arc is divided into some line segments, adopt the processing of linear interpolation mode implementation space circular arc, during interpolation, system calculates tool radius parameter automatically, solve Axial changes and cause system cannot calculate a difficult problem for tool radius and axial direction Interpolation Spaces circular arc, both improve efficiency, in turn ensure that crudy.Be particularly useful for space or cutter in particular cases restricted, the arc machining mode of circular interpolation cannot be carried out in the direction perpendicular to processing plane.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of processing space between crotch in trolley coach bogie two flap seats.
Fig. 2 is the enlarged diagram of I part in Fig. 1.
Fig. 3 is the structural representation that the present invention sets up space coordinates on workpiece to be added.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the processing method schematic diagram of the space circular arc groove of Axial changes of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further details.
As shown in Figures 1 to 5, workpiece to be added is in level trough 2 and arc groove 1 joint, and arc groove 1 is tangent with level trough 2.Milling cutter of the present invention is the rose cutter that slotting cutter or milling cutter radius are less than arc groove width to be processed, and the processing method of the space circular arc groove of Axial changes of the present invention comprises the steps:
Step one, with the outward flange starting point of arc groove 1 to be processed for initial point O, milling cutter horizontal radial direction of feed is X-axis, and cutter spindle is Z axis to direction of feed, and the vertical radial feed direction of milling cutter is Y-axis, sets up rectangular coordinate system in space; The machined parameters of definition arc groove 1, this machined parameters comprises arc radius R, circular arc starting point radian value, circular arc terminal radian value, circular arc radian incremental value θ, milling cutter length, milling cutter radius, circular arc X-axis starting point coordinate, circular arc X-axis terminal point coordinate;
Wherein, above-mentioned circular arc radian incremental value θ is the fixed value calculated according to the total radian measure alpha of circular arc (α≤90 °) and the milling cutter specification of arc groove 1 to be processed; Above-mentioned circular arc starting point radian value is 0 °, and above-mentioned circular arc terminal radian value equals the total radian measure alpha of circular arc;
The trigonometric function relation of step 2, arc radius R, circular arc radian incremental value θ and right angled triangle according to arc groove 1 to be processed calculates first processing stand A
1coordinate; Milling cutter starting point is positioned at origin of coordinates O place, first controls milling cutter along line segment OA
1direction enters A by initial point O work
1after point, then control milling cutter along X-direction work and enter X-axis terminal point coordinate place, realize the ground floor milling of arc groove 1;
The trigonometric function relation of step 3, arc radius R, circular arc radian incremental value θ and right angled triangle according to arc groove 1 to be processed calculates the n-th processing stand A
nthe coordinate of (n>=2 and n is integer), concrete computational process is: some A
nz axis coordinate A
n(z)=R × sin θ
n, some A
ny-axis coordinate A
n(y)=R-R × cos θ
n, θ in formula
n=n × θ; Then after judging this step processing, whether total radian of arc groove 1 is less than or equal to circular arc terminal radian value, if so, then enters step 4; If not, then terminate processing, and then complete the processing method of space circular arc groove of Axial changes;
Step 4, milling cutter starting point is positioned at previous step processing after (n-1)th processing stand A obtaining
n-1place, controls milling cutter along line segment A
n-1a
ndirection is by A
n-1point work enters A
nafter point, then control milling cutter along X-direction work and enter X-axis terminal point coordinate place, realize the n-th layer milling of arc groove 1, and then perform step 3.
Claims (2)
1. the processing method of the space circular arc groove of Axial changes, it is characterized in that, the method comprises the steps:
Step one, be initial point O with the outward flange starting point of arc groove to be processed (1), milling cutter horizontal radial direction of feed is X-axis, and cutter spindle is Z axis to direction of feed, and the vertical radial feed direction of milling cutter is Y-axis, sets up rectangular coordinate system in space; The machined parameters of definition arc groove (1), this machined parameters comprises arc radius R, circular arc starting point radian value, circular arc terminal radian value, circular arc radian incremental value θ, milling cutter length, milling cutter radius, circular arc X-axis starting point coordinate, circular arc X-axis terminal point coordinate;
Wherein, above-mentioned circular arc radian incremental value θ is the fixed value calculated according to the total radian measure alpha of circular arc and the milling cutter specification of arc groove to be processed (1), α≤90 °; Above-mentioned circular arc starting point radian value is 0 °, and above-mentioned circular arc terminal radian value equals the total radian measure alpha of circular arc;
The trigonometric function relation of step 2, arc radius R, circular arc radian incremental value θ and right angled triangle according to arc groove to be processed (1) calculates first processing stand A
1coordinate; Milling cutter starting point is positioned at origin of coordinates O place, first controls milling cutter along line segment OA
1direction enters A by initial point O work
1after point, then control milling cutter along X-direction work and enter X-axis terminal point coordinate place, realize the ground floor milling of arc groove (1);
The trigonometric function relation of step 3, arc radius R, circular arc radian incremental value θ and right angled triangle according to arc groove to be processed (1) calculates the n-th processing stand A
ncoordinate, n>=2 and n is integer, after judging this step processing, whether total radian of arc groove (1) is less than or equal to circular arc terminal radian value, if so, then enters step 4; If not, then terminate processing, and then complete the processing method of space circular arc groove of Axial changes;
Step 4, milling cutter starting point is positioned at previous step processing after (n-1)th processing stand A obtaining
n-1place, first controls milling cutter along line segment A
n-1a
ndirection is by A
n-1point work enters A
nafter point, then control milling cutter along X-direction work and enter X-axis terminal point coordinate place, realize the n-th layer milling of arc groove (1), and then perform step 3.
2. the processing method of the space circular arc groove of Axial changes according to claim 1, is characterized in that, described milling cutter is the rose cutter that slotting cutter or milling cutter radius are less than arc groove width to be processed.
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| CN104708092B (en) * | 2015-02-04 | 2017-02-01 | 宝鸡石油机械有限责任公司 | Method for processing curved slots on conical curved surface of driving ring body |
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| CN108227621B (en) * | 2018-01-15 | 2020-12-04 | 上海维宏电子科技股份有限公司 | DXF track processing method based on double-edge milling of double-edge milling lathe |
| CN110449648B (en) * | 2019-07-09 | 2021-02-12 | 中国航发哈尔滨东安发动机有限公司 | Cutter and method for machining eccentric shaft clearance groove |
| CN110756872B (en) * | 2019-11-13 | 2021-12-21 | 中国航发动力股份有限公司 | Method for processing throttling groove with gradually-changed section |
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| CN112454596B (en) * | 2020-11-23 | 2022-11-25 | 杭州兆鼎科技实业有限公司 | Three-axis linkage tangent arc groove control method and system |
| CN112620757B (en) * | 2020-12-28 | 2024-03-26 | 常德中联重科液压有限公司 | Arc groove processing method |
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Address after: 130062 Jilin province Changchun city green yam Road No. 435 Patentee after: CRRC CHANGCHUN RAILWAY VEHICLES CO., LTD. Address before: 130062 Jilin province Changchun city green yam Road No. 435 Patentee before: Changchun Track Passenger Train Co., Ltd. |