CN100562403C - The modification method of error of knife tool integral relief grinding emery cutter line and device - Google Patents
The modification method of error of knife tool integral relief grinding emery cutter line and device Download PDFInfo
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- CN100562403C CN100562403C CNB2008100460692A CN200810046069A CN100562403C CN 100562403 C CN100562403 C CN 100562403C CN B2008100460692 A CNB2008100460692 A CN B2008100460692A CN 200810046069 A CN200810046069 A CN 200810046069A CN 100562403 C CN100562403 C CN 100562403C
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Abstract
The present invention discloses a kind of modification method and device of error of knife tool integral relief grinding emery cutter line, and method comprises step: (1) detects the cutter molded lines, obtains the actual molded lines of whole relief grinding wheel thus; (2) should actual molded lines and theory shaped wire compare, find out the control point of error; (3) error amount at the actual molded lines of calculating control point; (4) adjust the position at control point according to the error amount at control point, make it consistent with theory shaped wire; The method that step (4) is adjusted the control point is: actual molded lines and theory shaped wire are placed plane coordinate system; Draw actual molded lines control point A respectively
1Coordinate figure X
1, Y
1With the corresponding control point A of theory shaped wire
2Coordinate figure X
2, Y
2Normal error value Δ X with the control point characterizes working control point A
1The distance of skew is with the angle β sign working control point A of working control point normal and X-axis
1The direction of skew draws Mathematical Modeling, with this calculated with mathematical model the pairing coordinate figure in qualified position is adjusted at the control point, is generated the molded lines of whole relief grinding wheel again by new coordinate figure.
Description
Technical field
The present invention relates to the whole relief grinding wheel of cutter, be specifically related to the modification method and the device of this relief grinding wheel molded lines error.
Background technology
Special-shaped workpiece is with molded lines milling cutter machining, and the cutting edge molded lines of molded lines milling cutter is consistent with the profile molded lines of workpiece, can process this special-shaped workpiece.
The production model of molded lines milling cutter has two kinds: a kind of is numerical control cutter mill; Another is a relief grinding.Wherein relief grinding also has dual mode: a kind of is to use the monolithic emery wheel to milling cutter cutting edge molded lines segmentation relief grinding, and time of grinding is 4 days; Another kind is to use the monolithic molding emery wheel to the whole relief grinding of milling cutter cutting edge molded lines, and time of grinding only needed just can finish in 2 hours.This dual mode compares, and the monolithic molding emery wheel has improved much than the operating efficiency of monolithic emery wheel, and is more economical.
Technical process with monolithic molding emery wheel milling cutter processing is: elder generation's grinding monolithic molding emery wheel on grinding machine, and make its molded lines consistent with the cutting edge roundness molded lines, again that grinding is good monolithic molding emery wheel is installed on the gear milling lathe relief grinding cutter.As seen, the form accuracy of workpiece is by milling cutter cutting edge molded lines precision decision, and milling cutter cutting edge molded lines precision is by the molded lines precision decision of monolithic molding emery wheel.During with monolithic molding emery wheel relief grinding milling cutter, self also can wear and tear the monolithic molding emery wheel, when its molded lines precision is undesirable, just needs to revise, and the monolithic molding emery wheel is unloaded, and places on the grinding machine, and grinding again recovers its molded lines precision.
The method of present correction is:
Referring to Fig. 1: according to testing result to the cutter molded lines, to the control point A of error is arranged on the molded lines, with this control point A is the center of circle, with the normal direction distance, delta X between the control point corresponding on this control point and the theory shaped wire is that radius is drawn circle, this circle has two intersection points with the normal at this control point, be that the position is higher than the last intersection point A ' in the center of circle and the following intersection point A that the position is lower than the center of circle "; higher if the position is compared at this control point and the control point of theory shaped wire; then with intersection point A down " replace this that control point A of error is arranged, otherwise, then using intersection point A ' replaces, there is the control point of error all to take such method correction (the actual molded lines control point shown in the figure is lower than theory shaped wire control point) to each, obtain new molded lines, by this molded lines grinding monolithic molding emery wheel again, again with this new molded lines monolithic molding emery wheel process tool, whether the check cutter is qualified, if still defective, then repeat above-mentioned makeover process.This modification method is an approximatioss, needs by repeatedly revising, and the error that just can make the control point is in the scope that design allows.In the actual correction process, often because the direction at control point is adjusted the wrong bigger deviation that occurs, will repeat at least to revise more than 10 time, loaded down with trivial details unusually, 5-7 consuming time days, efficient was extremely low.And the correction work cooperation of must the technical staff cooperating with the machine operation personnel relies on the technical staff and formulates amendment scheme.
Summary of the invention
Purpose of the present invention provides a kind of modification method and device of error of knife tool integral relief grinding emery cutter line, uses this method and device to shorten the correction time significantly; The technological means of revising is solidificated in the operating system of grinding machine, revises whole relief grinding wheel molded lines automatically, need not artificial correction; Correction work can be finished by the grinding machine operator, no longer relies on the technical staff.
Technical solution of the present invention is:
A kind of modification method of error of knife tool integral relief grinding emery cutter line comprises step:
(1). detect the actual molded lines of whole relief grinding wheel;
(2). should actual molded lines and theory shaped wire compare, find out the control point of error;
(3). calculate the error amount at actual molded lines control point;
(4). adjust the position at control point according to the error amount at control point, make it consistent with theory shaped wire;
The method that described step (4) is adjusted the position at control point is:
Actual molded lines and theory shaped wire are placed plane coordinate system; Stipulate actual molded lines control point A
1Coordinate be X
1, Y
1, the corresponding control point A of regulation theory shaped wire
2Coordinate be X
2, Y
2Normal error value Δ X with the control point characterizes working control point A
1The distance of skew is with the angle β sign working control point A of working control point normal and X-axis
1The direction of skew; Draw following Mathematical Modeling:
As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °,
X
2＝X
1-ΔXcos(π-β)；Y
2＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °,
X
2＝X
1+ΔXcos(β)，Y
2＝Y
1+ΔXsin(β)；
Regulation control point A
1At the corresponding control point A of theoretical molded lines
2The below time, Δ X get on the occasion of, otherwise Δ X gets negative value.
Coordinate figure X with the control point that calculates
2, Y
2Replace X
1, Y
1, so just with control point A
1Adjust to A
2
The concrete steps of said method are:
1.. detect the cutter molded lines with cutter molded lines checkout gear, obtain the actual molded lines of whole relief grinding wheel thus, this molded lines and theory shaped wire are compared, error identifying exceeds the control point of allowed band, and calculates the normal error value Δ X at each control point;
2.. actual molded lines and theory shaped wire are placed plane coordinate system; Stipulate actual molded lines control point A
1Coordinate figure X
1, Y
1With the corresponding control point A of theory shaped wire
2Coordinate figure X
2, Y
2Normal error value Δ X with the control point characterizes working control point A
1The distance of skew is with the angle β sign working control point A of working control point normal and X-axis
1The direction of skew; Draw following Mathematical Modeling:
As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °,
X
2＝X
1-ΔXcos(π-β)；Y
2＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °,
X
2＝X
1+ΔXcos(β)，Y
2＝Y
1+ΔXsin(β)；
Regulation control point A
1At the corresponding control point A of theoretical molded lines
2The below time, Δ X get on the occasion of, otherwise Δ X gets negative value.
3.. adjust control point A with approximatioss
1:
A. as control point A
1At the corresponding control point A of theoretical molded lines
2The below time, with control point A
1Toward raising, obtain new control point A
1' as control point A
1At the corresponding control point A of theoretical molded lines
2The top time, with control point A
1Toward downward modulation, obtain new control point A
1"; Following formula is satisfied in adjustment:
As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °, control point A
1' coordinate figure be
X
1’＝X
1-ΔXcos(π-β)；Y
1’＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °, control point A
1" coordinate figure be
X
1”＝X
1+ΔXcos(β)，Y
1”＝Y
1+ΔXsin(β)；
B. all are new control point is divided into per 31 groups in order, and three control point smooth connections with each group obtain new molded lines;
C. by new molded lines abrasive grinding wheel, use this emery wheel relief grinding cutter again;
D. check cutter,, revise termination,, repeat above-mentioned makeover process if defective if qualified, qualified up to cutter.
A kind of correcting device of error of knife tool integral relief grinding emery cutter line comprises cutter molded lines checkout gear, grinding machine and Development of Grinding Machines'Control System thereof, and described cutter molded lines checkout gear has:
Comparison module is used for actual molded lines of cutter and theory shaped wire are compared, and finds out the control point that site error in the cutter molded lines exceeds allowed band;
Computing module is used for the normal error value that the error of calculation exceeds the allowed band control point;
Judge module is used for judging according to the control point that actual molded lines has error not to exceed allowed band whether actual molded lines is qualified;
Output module is used to export the normal error Value Data that judged result and error exceed the allowed band control point;
Described Development of Grinding Machines'Control System comprises a processor, and this processor has:
Data acquisition module is used to gather the data from cutter molded lines checkout gear;
Memory module is used to store the Mathematical Modeling of control point coordinate figure, the data of collection, the output data of result of calculation;
Correcting module is used to revise the coordinate figure at actual molded lines control point, obtains new molded lines;
Output module is used for revised molded lines data are outputed to the molded lines guiding mechanism of grinding machine.
Described correcting module comprises three submodules, is respectively:
Computing module A is used for according to the current coordinate figure at the actual molded lines of calculated with mathematical model control point and the angle of normal and X-axis thereof;
Computing module B is used for according to calculated with mathematical model the pairing coordinate figure in qualified position being adjusted at the control point;
The molded lines generation module is used for generating new emery wheel molded lines according to the new coordinate figure in control point.
Useful technique effect of the present invention:
Because adopt the coordinate figure at control point to come the position of Correction and Control point, precision is very high, at most only need approach correction 2 times, the emery wheel molded lines can meet the requirements, and just can finish half a day, compares with 5-7 days of prior art, increased substantially operating efficiency.And amendment scheme is cured in the control system of grinding machine, and makeover process is finished automatically by control system, no longer relies on the technical staff and formulates amendment scheme, only needs the operation of grinding machine operator follow procedure, and is very easy.
Description of drawings
Fig. 1 is a prior art modification method schematic diagram
Fig. 2 is a process chart of the present invention
Fig. 3 is the structural representation of correcting device of the present invention
Fig. 4 is modification method schematic diagram of the present invention (the working control point is lower than theoretical control point, and the control point is positioned at the molded lines ascent stage)
Fig. 5 is modification method schematic diagram of the present invention (the working control point is higher than theoretical control point, and the control point is positioned at the molded lines descending branch)
Fig. 6 is the schematic diagram that the present invention approaches correction
Fig. 7 is the revised control point of a present invention connection diagram
Fig. 8 is a control point error enlarged drawing
Fig. 9 is the nearly step enlarged drawing of control point A among Fig. 8
The specific embodiment
Referring to Fig. 3: the correcting device of error of knife tool integral relief grinding emery cutter line of the present invention, comprise cutter molded lines checkout gear 1, grinding machine and control system thereof, described cutter molded lines checkout gear 1 has:
Comparison module 1.1 is used for actual molded lines of cutter and theory shaped wire are compared, and finds out the control point that site error in the cutter molded lines exceeds allowed band;
Computing module 1.2 is used for the normal error value that the error of calculation exceeds the allowed band control point;
Judge module 1.3 is used for judging according to the control point that actual molded lines has error not to exceed allowed band whether actual molded lines is qualified;
Output module 1.4 is used to export the normal error Value Data that judged result and error exceed the allowed band control point;
Described Development of Grinding Machines'Control System comprises a processor 2, and this processor has:
Data acquisition module 2.1 is used to gather the data from cutter molded lines checkout gear;
Memory module 2.3 is used to store the Mathematical Modeling of control point coordinate figure, the data of collection, the output data of result of calculation;
Correcting module 2.2 is used to revise the coordinate figure at actual molded lines control point, obtains new molded lines;
Output module 2.4 is used for revised molded lines data are outputed to the molded lines guiding mechanism of grinding machine.
Described correcting module comprises three submodules, is respectively:
Computing module A is used for according to the current coordinate figure at the actual molded lines of calculated with mathematical model control point and the angle of normal and X-axis thereof;
Computing module B is used for according to calculated with mathematical model the pairing coordinate figure in qualified position being adjusted at the control point;
Molded lines generation module 2.2.1 is used for generating new emery wheel molded lines according to the new coordinate figure in control point.
Referring to Fig. 2, technological process of the present invention is: by the technician " milling cutter molded lines " finished, " milling cutter molded lines " cut shape calculate the encryption control point, according to encrypting the control point emery wheel molded lines that in autocad, draws, the emery wheel molded lines is placed on several tarry matter beds, generate the NC code of lathe, by number tarry matter beds with wheel grinding when consistent with the emery wheel molded lines, emery wheel is placed on gear milling lathe, on gear milling lathe, cutter is carried out relief grinding, the cutter that relief grinding is good detects to Quality Control Department, and is qualified in this cutter completion of processing; If it is defective, then compare with actual cutter according to theory shaped wire, find out the not control point within the margin of tolerance, and note the error amount and the direction of each point, calculate the coordinate at revised control point through fixed software, these are generated new emery wheel molded lines at autocad, again this molded lines is applied to number tarry matter bed, till the cutter product is qualified.
Characteristics of the present invention are to revise emery wheel molded lines error and adopt fixed software to finish.
Referring to Fig. 4, Fig. 5, this modification method comprises the steps:
(1). detect the cutter molded lines, obtain the actual molded lines of whole relief grinding wheel thus;
(2). should actual molded lines and theory shaped wire compare, find out the control point of error;
(3). calculate the error amount at actual molded lines control point;
(4). adjust the position at control point according to the error amount at control point, make it consistent with theory shaped wire;
The method that described step (4) is adjusted the position at control point is:
Actual molded lines and theory shaped wire are placed plane coordinate system; Stipulate actual molded lines control point A
1Coordinate be X
1, Y
1, the corresponding control point A of regulation theory shaped wire
2Coordinate be X
2, Y
2As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °,
X
2＝X
1-ΔXcos(π-β)；Y
2＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °,
X
2＝X
1+ΔXcos(β)，Y
2＝Y
1+ΔXsin(β)；
Regulation control point A
1At the corresponding control point A of theoretical molded lines
2The below time, Δ X get on the occasion of, otherwise Δ X gets negative value.
Coordinate figure X with the control point that calculates
2, Y
2Replace X
1, Y
1, so just with control point A
1Adjust to A
2
It more than is the basic principle of this error correcting method, it is a kind of modification method of perfect condition, but in the actual correction process, because lathe and checkout gear precision are limited, control point normal error value that measurement gets itself and inaccuracy, with theoretical value error is arranged also, therefore, the new coordinate figure at the control point that calculates also can not be a theoretical value, that is to say, adjust the position of this point according to the new coordinate figure at control point, the new point of gained not can with theory shaped wire on deserved control point is overlapped, still have deviation.Therefore, still need adopt the approximatioss correction, concrete steps are:
1.. detect the cutter molded lines with cutter molded lines checkout gear, obtain the actual molded lines of whole relief grinding wheel thus, this molded lines and ethics molded lines are compared, error identifying exceeds the control point of allowed band, and calculates the normal error value at each control point;
2.. actual molded lines and theory shaped wire are placed plane coordinate system; Draw actual molded lines control point A respectively
1Coordinate figure X
1, Y
1With the corresponding control point A of theory shaped wire
2Coordinate figure X
2, Y
2Normal error value Δ X with the control point characterizes working control point A
1The distance of skew is with the angle β sign working control point A of working control point normal and X-axis
1The direction of skew; Draw following Mathematical Modeling:
As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °,
X
2＝X
1-ΔXcos(π-β)；Y
2＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °,
X
2＝X
1+ΔXcos(β)，Y
2＝Y
1+ΔXsin(β)；
Regulation control point A
1At the corresponding control point A of theoretical molded lines
2The below time, Δ X get on the occasion of, otherwise Δ X gets negative value.
3.. adjust control point A with approximatioss
1, referring to Fig. 6:
A. as control point A
1At the corresponding control point A of theoretical molded lines
2The below time, with control point A
1Toward raising, obtain new control point A
1' as control point A
1At the corresponding control point A of theoretical molded lines
2The top time, with control point A
1Toward downward modulation, obtain new control point A
1"; Following formula is satisfied in adjustment:
As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °, control point A
1' coordinate figure be
X
1’＝X
1-ΔXcos(π-β)；Y
1’＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °, control point A
1" coordinate figure be
X
1”＝X
1+ΔXcos(β)，Y
1”＝Y
1+ΔXsin(β)；
B. all are new control point is divided into per 31 groups in order, and three control point smooth connections with each group obtain new molded lines;
C. by new molded lines abrasive grinding wheel, use this emery wheel relief grinding cutter again;
D. check cutter,, revise termination,, repeat above-mentioned makeover process if defective if qualified, qualified up to cutter.
Error correction software of the present invention has three functional modules: 1.. and computing module A is used for according to the current coordinate figure at the actual molded lines of calculated with mathematical model control point and the angle of normal and X-axis thereof.2.. computing module B according to the coordinate before the correction of emery wheel molded lines and normal direction and X-axis angle and each control point error, calculates the pairing coordinate figure in qualified position is adjusted at the control point.3.. molded lines generation module 2.2.1 is depicted as the required molded lines of several tarry matter beds automatically according to the coordinate figure at revised emery wheel molded lines control point in autocad.Details are as follows respectively.
Computing module A: be used for according to the current coordinate figure at the actual molded lines of calculated with mathematical model control point and the angle of normal and X-axis thereof.
At first the outline line with emery wheel is linked to be a multi-line section, directly by the data that read this multi-line section in the autoCAD database, obtains the coordinate and the bowstring ratio of each junction fragment (straight line or circular arc); Whether by each fragment bowstring is compared is zero, each section of decidable is circular arc or straight line, calculate each fragment middle point coordinates separately and the normal direction angle of normal direction angle, two-end-point simultaneously, in conjunction with the normal direction angle of two fragments end point, initial point before and after it, the normal direction angle of two-end-point is calculated mean value as the angle direction of adjusting.The original coordinates point and the normal direction that so just obtain each fragment end points and mid point are adjusted angle, and export in the text mode.
Computing module B; Calculate the coordinate at control point after the correction of emery wheel molded lines by the trigonometric function of the coordinate at the error amount at each control point, the preceding control point of emery wheel molded lines correction and its angle.That is: the coordinate+error * trigonometric function (angle) before revised coordinate=correction.And the revised coordinate in each control point exported in the text mode.
Referring to Fig. 6, concrete mathematical algorithm is as follows:
1. when β 〉=90 °, if A is adjusted to A " (be A---A "), this moment A " the X coordinate figure of point is: X "=X+ Δ Xcos (π-β) (stipulate actual molded lines control point below theoretical molded lines, Δ X be on the occasion of; Actual molded lines control point is above theoretical molded lines, and Δ X is a negative value).The X of this moment " should be bigger than the value of X, and the control point is positioned at above the theory shaped wire, so Δ X is a negative value, so computing formula is: X "=X-Δ Xcos (π-β); If A is adjusted to A ' (be A---A '), this moment, X ' should be littler than X, and the control point is positioned at the below of theory shaped wire, thus Δ X be on the occasion of, so computing formula is X '=X-Δ Xcos (π-β); Therefore if β 〉=90 ° then X '=X-Δ Xcos (π-β) or X "=X-Δ Xcos (π-β); In like manner the Y coordinate also can take same method to obtain its coordinate, promptly Y '=Y+ Δ Xsin (π-β), Y "=Y+ Δ Xsin (π-β), Y ' and Y " just decide by Δ X.Conclusion: X '=X-Δ Xcos when β 〉=90 ° (π-β), Y '=Y+ Δ Xsin (π-β).
2. X '=X+ Δ Xcos (β) or X when β＜90 ° "=X+ Δ Xcos (β) (as A---during A ',, can draw X '=X+ Δ Xcos (β) with Fig. 6 mirror image 180 degree, the Δ X of this moment be on the occasion of; As A---A " time, the Δ X of this moment is a negative value), in like manner also can draw Y Coordinate Calculation formula: Y '=Y+ Δ Xsin (β) or Y "=Y+ Δ Xsin (β), its occurrence is determined by Δ X.Conclusion: X '=X+ Δ Xcos (β) when β＜90 °, Y '=Y+ Δ Xsin (β).
Molded lines generation module 2.2.1: 3 on revised control point coordinate is one group, and (starting point of next group data is terminal points of last one group of data, and consider if the radius value of 3 formations especially greatly replace this section circular arc with straight line), then each group data is coupled together the automatic drafting (working environment of this module is autocad) of just having finished the emery wheel molded lines with circular arc.Specific algorithm is as shown in Figure 7:
If the straight line that some P1 and some p2 constitute equals 0 with the sine value of the included angle of straight line that some P2 and some p3 constitute, then draw straight line, otherwise draw circular arc.Be that sin (A)=0, three strokes and dots is in line; Sin (A) ≠ 0, three is drawn as circular arc.Again each group data is linked to each other and promptly generated revised emery wheel molded lines.
The operating procedure of error correction software of the present invention is as follows:
1. utilize computing module A, calculate the current coordinate figure at actual molded lines control point and the angle of normal and X-axis thereof:
In autocad, load subprogram one, carry out the point2 order, choose the emery wheel molded lines that needs correction, typing filename in the autocad command bar (being used for preserving the text name of output emery wheel molded lines control point and normal direction angle).
2. utilize computing module B, calculate the pairing coordinate figure in qualified position is adjusted at the control point:
A) set up the data forms---click " importing data " order button, the data of modules A output just import in the data forms of figure below automatically.
| Sequence number | The X coordinate | The Y coordinate | Angle |
| 1 | 409.61370 | 125.85530 | 90.00000 |
| 2 | 403.78840 | 125.85530 | 90.00000 |
| 3 | 397.96320 | 125.85530 | 105.00000 |
| 4 | 397.29890 | 125.47180 | 120.00000 |
| 5 | 396.63470 | 125.08830 | 147.58150 |
| 6 | 395.75150 | 122.96530 | 139.66180 |
| 7 | 393.79960 | 121.74980 | 104.16060 |
| 8 | 393.73960 | 121.73470 | 104.16060 |
| 9 | 393.67950 | 121.71950 | 104.16060 |
| 10 | 392.32550 | 121.91800 | 59.16060 |
B) typing control point error amount (default value of error is made as 0, and allows this columns) according to being set to and revising
| Sequence number | The X coordinate | The Y coordinate | Angle | Error |
| 1 | 409.61370 | 125.85530 | 90.00000 | 0.00000 |
| 2 | 403.78840 | 125.85530 | 90.00000 | 0.00000 |
| 3 | 397.96320 | 125.85530 | 105.00000 | 0.00000 |
| 4 | 397.29890 | 125.47180 | 120.00000 | 0.00000 |
| 5 | 396.63470 | 125.08830 | 147.58150 | 0.00000 |
| 6 | 395.75150 | 122.96530 | 139.66180 | 0.00000 |
| 7 | 393.79960 | 121.74980 | 104.16060 | 0.00000 |
| 8 | 393.73960 | 121.73470 | 104.16060 | 0.00000 |
| 9 | 393.67950 | 121.71950 | 104.16060 | 0.00000 |
| 10 | 392.32550 | 121.91800 | 59.16060 | 0.00000 |
C) click " correction " order button, with the new control point coordinate that calculates automatically in the data forms " modified chi " and " correction Y " two columns according to embodiment
| Sequence number | The X coordinate | The Y coordinate | Angle | Error | Modified chi | Revise Y |
| 1 | 409.61370 | 125.85530 | 90.00000 | -0.00500 | 409.61370 | 125.85030 |
| 2 | 403.78840 | 125.85530 | 90.00000 | 0.00400 | 403.78840 | 125.85930 |
| 3 | 397.96320 | 125.85530 | 105.00000 | 0.00200 | 397.96268 | 125.85723 |
| 4 | 397.29890 | 125.47180 | 120.00000 | 0.00000 | 397.29890 | 125.47180 |
| 5 | 396.63470 | 125.08830 | 147.58150 | 0.00000 | 396.63470 | 125.08830 |
| 6 | 395.75150 | 122.96530 | 139.66180 | 0.00000 | 395.75150 | 122.96530 |
| 7 | 393.79960 | 121.74980 | 104.16060 | 0.00500 | 393.79838 | 121.75465 |
| 8 | 393.73960 | 121.73470 | 104.16060 | -0.00600 | 393.74107 | 121.72888 |
| 9 | .393.67950 | 121.71950 | 104.16060 | 0.00000 | 393.67950 | 121.71950 |
| 10 | 392.32550 | 121.91800 | 59.16060 | -0.00600 | 392.32242 | 121.91285 |
D) click " derivation result " order button, " modified chi and correction Y " new control point coordinate figure in the tables of data is exported * .txt in the text mode.
3. with molded lines generation module 2.2.1, generate new emery wheel molded lines:
Load subprogram three at autocad, carry out the test order, the * .txt that opens file just finishes the revised emery wheel molded lines of automatic generation in autocad.
Adopt this method and device to revise the emery wheel molded lines, technique effect is very outstanding, and Fig. 8, Fig. 9 are the molded lines comparison diagrams before and after revising, and each control point error amount of revised emery wheel molded lines and theory shaped wire is minimum, can reach 10
-3The mm level.Be particularly suitable for processing the finish-milling cutter.
Claims (4)
1. the modification method of an error of knife tool integral relief grinding emery cutter line comprises step:
(1). detect the actual molded lines of whole relief grinding wheel;
(2). should actual molded lines and theory shaped wire compare, find out the control point of error;
(3). calculate the error amount at actual molded lines control point;
(4). adjust the position at control point according to the error amount at control point, make it consistent with theory shaped wire;
It is characterized in that the method that described step (4) is adjusted the position at control point is:
Actual molded lines and theory shaped wire are placed plane coordinate system; Stipulate actual molded lines control point A
1Coordinate be X
1, Y
1, the corresponding control point A of regulation theory shaped wire
2Coordinate be X
2, Y
2Normal error value Δ X with the control point characterizes working control point A
1The distance of skew is with the angle β sign working control point A of working control point normal and X-axis
1The direction of skew; Draw following Mathematical Modeling:
As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °,
X
2＝X
1-ΔXcos(π-β)；Y
2＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °,
X
2＝X
1+ΔXcos(β)，Y
2＝Y
1+ΔXsin(β)；
Regulation control point A
1At the corresponding control point A of theoretical molded lines
2The below time, Δ X get on the occasion of, otherwise Δ X gets negative value;
Coordinate figure X with the control point that calculates
2, Y
2Replace X
1, Y
1, so just with control point A
1Adjust to A
2
2. the modification method of error of knife tool integral relief grinding emery cutter line according to claim 1 is characterized in that, the concrete steps of this method are:
1.. detect the cutter molded lines with cutter molded lines checkout gear, obtain the actual molded lines of whole relief grinding wheel thus, this molded lines and theory shaped wire are compared, error identifying exceeds the control point of allowed band, calculates the normal error value Δ X at control point;
2.. actual molded lines and theory shaped wire are placed plane coordinate system, adjust control point A with approximatioss
1, stipulate actual molded lines control point A
1Coordinate be X
1, Y
1, the corresponding control point A of regulation theory shaped wire
2Coordinate be X
2, Y
2Normal error value Δ X with the control point characterizes working control point A
1The distance of skew is with the angle β sign working control point A of working control point normal and X-axis
1The direction of skew; Regulation control point A
1At the corresponding control point A of theoretical molded lines
2The below time, Δ X get on the occasion of, otherwise Δ X gets negative value, as control point A
1At the corresponding control point A of theoretical molded lines
2The below time, with control point A
1Toward raising, obtain new control point A
1' as control point A
1At the corresponding control point A of theoretical molded lines
2The top time, with control point A
1Toward downward modulation, obtain new control point A
1"; Following formula is satisfied in adjustment:
As control point A
1Be positioned at the ascent stage or the flex point of molded lines, during β 〉=90 °, control point A
1' coordinate figure be
X
1’＝X
1-ΔXcos(π-β)；Y
1’＝Y
1+ΔXsin(π-β)；
As control point A
1Be positioned at the descending branch of molded lines, during β＜90 °, control point A
1" coordinate figure be
X
1”＝X
1+ΔXcos(β)，Y
1”＝Y
1+ΔXsin(β)；
3.. the control point that all are new is divided into per 31 groups in order, and three control point smooth connections with each group obtain new molded lines;
4.. by new molded lines abrasive grinding wheel, use this emery wheel relief grinding cutter again;
5.. the check cutter, if qualified, revise termination, if defective, repeat above-mentioned makeover process, qualified up to cutter.
3. the correcting device of an error of knife tool integral relief grinding emery cutter line comprises cutter molded lines checkout gear, grinding machine and control system thereof, and described cutter molded lines checkout gear has:
Comparison module is used for actual molded lines of cutter and theory shaped wire are compared, and finds out the control point that site error in the cutter molded lines exceeds allowed band;
Computing module is used for the normal error value that the error of calculation exceeds the allowed band control point;
Judge module is used for judging according to the control point that actual molded lines has error not to exceed allowed band whether actual molded lines is qualified;
Output module is used to export the normal error Value Data that judged result and error exceed the allowed band control point;
Described Development of Grinding Machines'Control System comprises a processor, and this processor has:
Data acquisition module is used to gather the data from cutter molded lines checkout gear;
Memory module is used to store the Mathematical Modeling of control point coordinate figure, the data of collection, the output data of result of calculation;
Correcting module is used to revise the coordinate figure at actual molded lines control point, obtains new molded lines;
Output module is used for revised molded lines data are outputed to the molded lines guiding mechanism of grinding machine.
4. the correcting device of error of knife tool integral relief grinding emery cutter line according to claim 3 is characterized in that, described correcting module comprises three submodules, is respectively:
Computing module A is used for according to the current coordinate figure at the actual molded lines of calculated with mathematical model control point and the angle of normal and X-axis thereof;
Computing module B is used for according to calculated with mathematical model the pairing coordinate figure in qualified position being adjusted at the control point;
The molded lines generation module is used for generating new emery wheel molded lines according to the new coordinate figure in control point.
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| CNB2008100460692A CN100562403C (en) | 2008-09-13 | 2008-09-13 | The modification method of error of knife tool integral relief grinding emery cutter line and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500805A (en) * | 2011-11-03 | 2012-06-20 | 哈尔滨汽轮机厂有限责任公司 | Method for correcting rolling wheel molded line |
| CN102840839A (en) * | 2012-09-18 | 2012-12-26 | 重庆大学 | Accurate grinding wheel section measurement and error compensation method |
| CN106127731B (en) * | 2016-06-12 | 2019-03-05 | 浙江清华长三角研究院 | Weld joint recognition method based on touch-control mark and image procossing |
| CN106826417B (en) * | 2017-02-06 | 2018-12-25 | 成都天佑创软科技有限公司 | A kind of slotting cutter grinding process X-Y scheme emulation mode |
| CN109176172B (en) * | 2018-10-31 | 2020-04-14 | 中车戚墅堰机车车辆工艺研究所有限公司 | Method and device for repairing and grinding hob |
| CN111189389B (en) * | 2020-01-08 | 2021-07-23 | 逸美德科技股份有限公司 | Method and device for detecting damage degree of ridge |
| CN111552232A (en) * | 2020-04-03 | 2020-08-18 | 中国航发哈尔滨东安发动机有限公司 | Single machine calculation-free automatic alignment processing method |
| CN111638682B (en) * | 2020-05-26 | 2023-04-28 | 四川新迎顺信息技术股份有限公司 | Compensation method for grinding peripheral tooth helical blade back knife surface by using abrasion grinding wheel |
| CN114589631B (en) * | 2022-01-10 | 2023-04-07 | 黄山飞黄精密齿轮刀具制造有限公司 | Control system and method for numerical control relief grinding machine |
| CN114986265B (en) * | 2022-05-31 | 2022-11-18 | 嘉兴美旺机械制造有限公司 | Intelligent control blade grinding process method and system |
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