CN102601728A - Automatic compensation method for clamping errors for peripheral grinding of numerically controlled indexable blade - Google Patents
Automatic compensation method for clamping errors for peripheral grinding of numerically controlled indexable blade Download PDFInfo
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- CN102601728A CN102601728A CN2012100864508A CN201210086450A CN102601728A CN 102601728 A CN102601728 A CN 102601728A CN 2012100864508 A CN2012100864508 A CN 2012100864508A CN 201210086450 A CN201210086450 A CN 201210086450A CN 102601728 A CN102601728 A CN 102601728A
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Abstract
The invention discloses an automatic compensation method for clamping errors for the peripheral grinding of a numerically controlled indexable blade, wherein feeding parameters of a procedure of the numerically controlled grinding of the blade can be automatically corrected according to the clamping errors in an up-and-down direction (Y direction) and a front-and-back direction (X direction) of the blade, so as to reduce the requirement on the clamping accuracy of the blade greatly, improve the stability of the grinding accuracy of the periphery of the blade and reduce the rejection rate effectively. The automatic compensation method comprises the following steps: (1) placing the machined blade in a feeder and clamping; (2) measuring the clamping error delta x and the clamping error delta y in the up-and-down direction (Y direction) and the front-and-back direction (X direction) of the blade; (3) calculating the correction of each feeding parameter in the process of blade machining; (4) correcting the peripheral grinding numerically controlled machining procedure of the blade using the correction of each feeding parameter; and (5) grinding the blade according to the corrected peripheral grinding numerically controlled machining process of the blade.
Description
Technical field
The present invention relates to a kind of numerically-controlled invertible blade peripheral grinding clamping error auto compensatng method.
Background technology
In indexable insert tip, throw away tip numerical control peripheral grinding process; The numerical control grinding program of blade is to work out by desirable blade clamping center; And in actual process; There is error between the actual clamping center of blade and the desirable clamping center, causes the peripheral chipping allowance of blade inconsistent, and then cause blade peripheral grinding precision unstable.When the clamping error surpassed the grinding allowance of blade, the blade periphery can not complete grinding, thereby causes blade to be scrapped, and causes significant wastage.
In order to reduce the clamping error, the measure of taking usually is the positional precision of adjustment insert cartridges with respect to the blade loader, but adjustment process needs higher skill, the leading time of labor.
The existence of blade clamping error is inevitable.For reducing the influence of clamping error blade grinding accuracy stability; Avoid scrapping because of the excessive blade that causes of clamping error; When numerically-controlled invertible blade peripheral grinding, according to the blade clamping error of measuring before the processing, it is effective and feasible method that the clamping error is compensated automatically.
Summary of the invention
The object of the invention is exactly for addressing the above problem; A kind of numerically-controlled invertible blade peripheral grinding clamping error auto compensatng method is provided; It according to blade about clamping error amount on (Y direction) and front and back (directions X) direction, revise the feeding parameter of blade numerical control grinding program automatically, can reduce the requirement of blade clamping precision greatly; Improve the precision stability of blade peripheral grinding, the rate of effectively reducing the number of rejects and seconds.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of numerically-controlled invertible blade peripheral grinding clamping error auto compensatng method, its step is:
The first step: processed square band fillet blade is put into loader and clamping;
Second step: measure blade and be directions X in front and back and be up and down clamping error amount Δ x and the Δ y on the Y direction; It promptly is the theoretical clamping center of blade with O; O1 is the actual clamping center of blade; Actual clamping center O 1 is Δ x with theoretical clamping center O clamping error in the horizontal direction, and deviation in vertical direction is Δ y;
The 3rd step: the correction of calculating each feeding parameter in the blade process;
The 4th step: the peripheral grinding nc program of using the correction correction blade of each feeding parameter;
The 5th step: by the blade peripheral grinding nc program grinding blade of revising.
In said the 3rd step, according to actual clamping error delta x, Δ y, each cutting edge that calculates blade is correction and the correction of blade fillet grinding and feeding parameter of the straight flange grinding and feeding parameter of blade.
The grinding and feeding amount makeover process of said square band fillet blade: the supposition blade during with theoretical clamping center O clamping each cutting edge grinding and feeding amount be L, the amount of feeding when a, b, c, four cutting edge grindings of d is modified to La, Lb, Lc, Ld respectively:
La＝L-Δy
Lb＝L-Δx
Lc＝L+Δy
Ld＝L+Δx。
The feeding parameter correction of said blade fillet grinding is calculated:
The distance of blade clamping center to emery wheel working face is blade inscribed circle radius R during circular arc starting point M grinding; Distance between blade clamping center and the blade fillet center:
wherein R is the blade inscribed circle radius, and r is the blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and the angle between blade clamping center to the vertical line of emery wheel working face: ∠ POO
2=arctan ((R-r)/(R-r));
Then revise the feeding parameter of back fillet grinding:
The distance of blade clamping center to emery wheel working face during circular arc starting point M grinding: R+ Δ y;
Distance between blade clamping center and the blade fillet center:
wherein, r is the blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and the angle between blade clamping center to the vertical line of emery wheel working face: ∠ P
1O
1O
2=arctan ((R-r-Δ x)/(R-r+ Δ y)).
Basic principle of the present invention is: at blade after clamping finishes on peripheral grinding machine; By digital control system measure automatically blade about clamping error delta x and Δ y on (Y direction) and front and back (directions X) direction; Digital control system is according to clamping error delta x and Δ y then; Automatically calculate the correction of each feeding parameter in the blade periphery numerical control grinding process, and then revise the peripheral grinding nc program of blade, process by the nc program of revising at last.
The invention has the beneficial effects as follows: measure the clamping error through measuring method and revise the peripheral grinding nc program of blade in the blade first being processed, can (1) avoid because of the blade that the clamping error causes is too greatly scrapped, the emery wheel collision; (2) the clamping precision requirement of reduction blade, the time of shortening blade grinding.(3) improve blade grinding accuracy stability.
Description of drawings
Fig. 1 is a method flow diagram of the present invention;
Fig. 2 is a principle schematic of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Among Fig. 1, Fig. 2, compensation method of the present invention is:
The first step: processed square band fillet blade is put into loader and clamping;
Second step: measure blade and be directions X in front and back and be up and down clamping error amount Δ x and the Δ y on the Y direction; It promptly is the theoretical clamping center of blade with O; O1 is the actual clamping center of blade; Actual clamping center O 1 is Δ x with theoretical clamping center O clamping error in the horizontal direction, and deviation in vertical direction is Δ y;
The 3rd step: the correction of calculating each feeding parameter in the blade process;
The 4th step: the peripheral grinding nc program of using the correction correction blade of each feeding parameter;
The 5th step: by the blade peripheral grinding nc program grinding blade of revising.
In said the 3rd step, each cutting edge grinding and feeding amount is L when supposing blade with theoretical clamping center O clamping, and when having actual clamping error delta x, Δ y, the amount of feeding when a, b, c, four cutting edge grindings of d is modified to La, Lb, Lc, Ld respectively:
La＝L-Δy
Lb＝L-Δx
Lc＝L+Δy
Ld＝L+Δx；
The feeding parameter correction of blade fillet grinding is calculated:
The distance of blade clamping center to emery wheel working face is blade inscribed circle radius R during circular arc starting point M grinding; Distance between blade clamping center and the blade fillet center:
wherein R is the blade inscribed circle radius, and r is the blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and the angle between blade clamping center to the vertical line of emery wheel working face: ∠ POO
2=arctan ((R-r)/(R-r));
Then revise the feeding parameter of back fillet grinding:
The distance of blade clamping center to emery wheel working face during circular arc starting point M grinding: R+ Δ y;
Distance between blade clamping center and the blade fillet center:
wherein, r is the blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and the angle between blade clamping center to the vertical line of emery wheel working face: ∠ P
1O
1O
2=arctan ((R-r-Δ x)/(R-r+ Δ y)).
Technical scheme of the present invention is not limited to the shape of tool that provided for example; Form owing to cutter in actual production is various; But according to actual clamping error delta x, Δ y; Each cutting edge that calculates blade is the correction and the correction of blade fillet grinding and feeding parameter of the straight flange grinding and feeding parameter of blade, and this thinking of carrying out error correction is identical, so those skilled in the art are directed against the correction that concrete shape cutter done and still belong to technical scheme of the present invention under thinking of the present invention.
Claims (4)
1. numerically-controlled invertible blade peripheral grinding clamping error auto compensatng method is characterized in that its step is:
The first step: processed square band fillet blade is put into loader and clamping;
Second step: measure blade and be directions X in front and back and be up and down clamping error amount Δ x and the Δ y on the Y direction; It promptly is the theoretical clamping center of blade with O; O1 is the actual clamping center of blade; Actual clamping center O 1 is Δ x with theoretical clamping center O clamping error in the horizontal direction, and deviation in vertical direction is Δ y;
The 3rd step: the correction of calculating each feeding parameter in the blade process;
The 4th step: the peripheral grinding nc program of using the correction correction blade of each feeding parameter;
The 5th step: by the blade peripheral grinding nc program grinding blade of revising.
2. numerically-controlled invertible blade peripheral grinding clamping error auto compensatng method as claimed in claim 1; It is characterized in that; In said the 3rd step; According to actual clamping error delta x, Δ y, each cutting edge that calculates blade is correction and the correction of blade fillet grinding and feeding parameter of the straight flange grinding and feeding parameter of blade.
3. numerically-controlled invertible blade peripheral grinding clamping error auto compensatng method as claimed in claim 2; It is characterized in that; The makeover process of the straight flange grinding and feeding parameter of said blade is: the supposition blade during with theoretical clamping center O clamping each cutting edge grinding and feeding amount be L, the amount of feeding when a, b, c, four cutting edge grindings of d is modified to La, Lb, Lc, Ld respectively:
La＝L-Δy
Lb＝L-Δx
Lc＝L+Δy
Ld＝L+Δx。
4. numerically-controlled invertible blade peripheral grinding clamping error auto compensatng method as claimed in claim 2 is characterized in that, the feeding parameter correction of said blade fillet grinding is calculated:
The distance of blade clamping center to emery wheel working face is blade inscribed circle radius R during circular arc starting point M grinding;
Distance between blade clamping center and the blade fillet center:
wherein R is the blade inscribed circle radius, and r is the blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and the angle between blade clamping center to the vertical line of emery wheel working face: ∠ POO
2=arctan ((R-r)/(R-r));
Then revise the feeding parameter of back fillet grinding:
The distance of blade clamping center to emery wheel working face during circular arc starting point M grinding: R+ Δ y;
Distance between blade clamping center and the blade fillet center:
wherein, r is the blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and the angle between blade clamping center to the vertical line of emery wheel working face: ∠ P
1O
1O
2=arctan ((R-r-Δ x)/(R-r+ Δ y)).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210086450.8A CN102601728B (en) | 2012-03-28 | 2012-03-28 | Automatic compensation method for clamping errors for peripheral grinding of numerically controlled indexable blade |
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| CN201210086450.8A CN102601728B (en) | 2012-03-28 | 2012-03-28 | Automatic compensation method for clamping errors for peripheral grinding of numerically controlled indexable blade |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264350A (en) * | 2013-06-05 | 2013-08-28 | 湖南楚翰智能科技有限公司 | Indexable blade periphery grinding machine zero transmission and automatic clamping device |
| CN107498399A (en) * | 2017-08-28 | 2017-12-22 | 天通吉成机器技术有限公司 | Periphery grinding machine perpendicularity on-line measurement modification method and system |
| CN108549318A (en) * | 2018-05-11 | 2018-09-18 | 彩虹集团有限公司 | A kind of numerical-control processing method improving overflow brick weir crest fillet quality |
| CN110340752A (en) * | 2019-06-29 | 2019-10-18 | 芜湖市零一精密工具制造有限公司 | A kind of periphery mill raising regular hexagon blade machining accuracy method |
| CN110877237A (en) * | 2019-12-10 | 2020-03-13 | 辽宁科技大学 | Compensation method based on eccentricity of rotation center of main shaft of grinding machine and rotation center of workpiece |
| CN115502790A (en) * | 2022-09-27 | 2022-12-23 | 江苏新瑞重工科技有限公司 | Automatic measuring and compensating system and method for center of blade blank of peripheral grinding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107498399A (en) * | 2017-08-28 | 2017-12-22 | 天通吉成机器技术有限公司 | Periphery grinding machine perpendicularity on-line measurement modification method and system |
| CN107498399B (en) * | 2017-08-28 | 2019-09-10 | 天通吉成机器技术有限公司 | Periphery grinding machine verticality on-line measurement modification method and system |
| CN108549318A (en) * | 2018-05-11 | 2018-09-18 | 彩虹集团有限公司 | A kind of numerical-control processing method improving overflow brick weir crest fillet quality |
| CN110340752A (en) * | 2019-06-29 | 2019-10-18 | 芜湖市零一精密工具制造有限公司 | A kind of periphery mill raising regular hexagon blade machining accuracy method |
| CN110877237A (en) * | 2019-12-10 | 2020-03-13 | 辽宁科技大学 | Compensation method based on eccentricity of rotation center of main shaft of grinding machine and rotation center of workpiece |
| CN110877237B (en) * | 2019-12-10 | 2021-06-15 | 辽宁科技大学 | Compensation method based on eccentricity of rotation center of main shaft of grinding machine and rotation center of workpiece |
| CN115502790A (en) * | 2022-09-27 | 2022-12-23 | 江苏新瑞重工科技有限公司 | Automatic measuring and compensating system and method for center of blade blank of peripheral grinding machine |
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| CN102601728B (en) | 2014-04-16 |
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