CN102601728B - 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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- CN102601728B CN102601728B CN201210086450.8A CN201210086450A CN102601728B CN 102601728 B CN102601728 B CN 102601728B CN 201210086450 A CN201210086450 A CN 201210086450A CN 102601728 B CN102601728 B CN 102601728B
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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 circumference of blade grinding and 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, between the actual clamping center of blade and desirable clamping center, there is error, cause the periphery chipping allowance of blade inconsistent, and then cause circumference of blade grinding accuracy unstable.When clamping error surpasses the grinding allowance of blade, circumference of blade can not complete grinding, thereby causes blade to be scrapped, and causes significant wastage.
In order to reduce clamping error, the measure of conventionally taking is to adjust insert cartridges with respect to the positional precision of blade loader, but adjustment process needs higher skill, expends a large amount of leading time.
The existence of blade clamping error is inevitable.For reducing the impact of clamping error blade grinding accuracy stability, avoid scrapping because of the excessive blade causing of clamping error, when the grinding of numerically-controlled invertible circumference of blade, according to the blade clamping error of measuring before processing, it is effective and feasible method that clamping error is carried out to auto-compensation.
Summary of the invention
Object of the present invention is exactly for addressing the above problem, a kind of numerically-controlled invertible circumference of blade grinding and clamping error auto compensatng method is provided, it is the clamping error amount in upper and lower (Y-direction) and front and back (directions X) direction according to blade, automatically revise the feeding parameter of blade numerical control grinding program, can greatly reduce the requirement of blade clamping precision, improve the precision stability of circumference of blade grinding, the rate of effectively reducing the number of rejects and seconds.
For achieving the above object, the present invention adopts following technical scheme:
A numerically-controlled invertible circumference of blade grinding and clamping error auto compensatng method, its step is:
The first step: processed square band fillet blade is put into loader clamping;
Second step: measure blade and be directions X in front and back and be clamping error amount Δ x and the Δ y in Y-direction up and down, the theoretical clamping center that the O of take is blade, 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 is in vertical direction Δ y;
The 3rd step: the correction of calculating each feeding parameter in blade process;
The 4th step: with the peripheral grinding nc program of the correction correction blade of each feeding parameter;
The 5th step: by the circumference of blade grinding nc program grinding blade of revising.
In described the 3rd step, according to actual clamping error delta x, Δ y, each cutting edge that calculates blade is the correction of straight flange grinding and feeding parameter and the correction of blade fillet grinding and feeding parameter of blade.
Described square is with the grinding and feeding amount makeover process of fillet blade: when supposition blade be take theoretical clamping center O clamping, each cutting edge grinding and feeding amount is L, and amount of feeding when a, b, c, tetra-cutting edge grindings of d is modified to respectively La, Lb, Lc, Ld:
La＝L-Δy
Lb＝L-Δx
Lc＝L+Δy
Ld＝L+Δx。
The feeding parameter correction of described blade fillet grinding is calculated:
During circular arc starting point M grinding, blade clamping center to the distance of emery wheel working face is blade inscribed circle radius R; Distance between blade clamping center and blade fillet center:
wherein R is blade inscribed circle radius, and r is blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and blade clamping center is to the angle between the vertical line of emery wheel working face: ∠ POO
2=arctan ((R-r)/(R-r));
The feeding parameter of fillet grinding after revising:
During circular arc starting point M grinding, blade clamping center is to the distance of emery wheel working face: R+ Δ y;
Distance between blade clamping center and blade fillet center:
wherein, r is blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and blade clamping center is to the angle between 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: after blade clamping on periphery grinding machine is complete, by digital control system, automatically measure clamping error delta x and the Δ y of blade in upper and lower (Y-direction) and front and back (directions X) direction, then digital control system is according to clamping error delta x and Δ y, automatically calculate the correction of each feeding parameter in circumference of blade numerical control grinding process, and then the peripheral grinding nc program of correction blade, finally by the nc program of revising, process.
The invention has the beneficial effects as follows: in blade first being processed, by measuring method, measure clamping error and revise the peripheral grinding nc program of blade, can (1) avoid because the blade that clamping error causes too is greatly scrapped, emery wheel collision; (2) reduce the clamping precision requirement of blade, shorten the time of blade grinding.(3) improve blade grinding accuracy stability.
Accompanying drawing explanation
Fig. 1 is method flow diagram of the present invention;
Fig. 2 is principle schematic of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
In Fig. 1, Fig. 2, compensation method of the present invention is:
The first step: processed square band fillet blade is put into loader clamping;
Second step: measure blade and be directions X in front and back and be clamping error amount Δ x and the Δ y in Y-direction up and down, the theoretical clamping center that the O of take is blade, 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 is in vertical direction Δ y;
The 3rd step: the correction of calculating each feeding parameter in blade process;
The 4th step: with the peripheral grinding nc program of the correction correction blade of each feeding parameter;
The 5th step: by the circumference of blade grinding nc program grinding blade of revising.
In described the 3rd step, suppose that when blade be take theoretical clamping center O clamping, each cutting edge grinding and feeding amount is L, when there is actual clamping error delta x, Δ y, amount of feeding when a, b, c, tetra-cutting edge grindings of d is modified to respectively La, Lb, Lc, Ld:
La＝L-Δy
Lb＝L-Δx
Lc＝L+Δy
Ld＝L+Δx；
The feeding parameter correction of blade fillet grinding is calculated:
During circular arc starting point M grinding, blade clamping center to the distance of emery wheel working face is blade inscribed circle radius R; Distance between blade clamping center and blade fillet center:
wherein R is blade inscribed circle radius, and r is blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and blade clamping center is to the angle between the vertical line of emery wheel working face: ∠ POO
2=arctan ((R-r)/(R-r));
The feeding parameter of fillet grinding after revising:
During circular arc starting point M grinding, blade clamping center is to the distance of emery wheel working face: R+ Δ y;
Distance between blade clamping center and blade fillet center:
wherein, r is blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and blade clamping center is to the angle between the vertical line of emery wheel working face: ∠ P
1o
1o
2=arctan ((R-r-Δ x)/(R-r+ Δ y)).
The shape of tool that technical scheme of the present invention is not limited to provide for example, form due 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 of straight flange grinding and feeding parameter and the correction of blade fillet grinding and feeding parameter of blade, this thinking of carrying out error correction is identical, so the correction that those skilled in the art do for concrete shape cutter under thinking of the present invention still belongs to technical scheme of the present invention.
Claims (1)
1. a numerically-controlled invertible circumference of blade grinding and clamping error auto compensatng method, is characterized in that, its step is:
The first step: processed square band fillet blade is put into loader clamping;
Second step: measure blade and in front and back be directions X and be that clamping Wu Cha Zhi ⊿ x in Y-direction is with ⊿ y up and down, the theoretical clamping center that the O of take is blade, O1 is the actual clamping center of blade, clamping error in the horizontal direction of actual clamping center O 1 and theoretical clamping center O Wei ⊿ x, deviation in vertical direction Wei ⊿ y;
The 3rd step: the correction of calculating each feeding parameter in blade process;
The 4th step: with the peripheral grinding nc program of the correction correction blade of each feeding parameter;
The 5th step: by the circumference of blade grinding nc program grinding blade of revising;
In described the 3rd step, according to actual clamping Wu Cha ⊿ x, ⊿ y, each cutting edge that calculates blade is the correction of straight flange grinding and feeding parameter and the correction of blade fillet grinding and feeding parameter of blade;
The makeover process of the straight flange grinding and feeding parameter of described blade is: when supposition blade be take theoretical clamping center O clamping, each cutting edge grinding and feeding amount is L, and amount of feeding when a, b, c, tetra-cutting edge grindings of d is modified to respectively La, Lb, Lc, Ld:
La=L-⊿y
Lb=L-⊿x
Lc=L+⊿y
Ld=L+⊿x；
The feeding parameter correction of described blade fillet grinding is calculated:
During circular arc starting point M grinding, blade clamping center to the distance of emery wheel working face is blade inscribed circle radius R;
Distance between blade clamping center and blade fillet center:
wherein R is blade inscribed circle radius, and r is blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and blade clamping center is to the angle between the vertical line of emery wheel working face: ∠ POO
2=arctan ((R – r)/(R – r));
The feeding parameter of fillet grinding after revising:
During circular arc starting point M grinding, blade clamping center is to the distance of emery wheel working face: R+ ⊿ y;
Distance between blade clamping center and blade fillet center:
Wherein, r is blade radius of corner;
During circular arc starting point M grinding, the line at blade clamping center and blade fillet center, and blade clamping center is to the angle between the vertical line of emery wheel working face: ∠ P
1o
1o
2=arctan ((R – r – ⊿ x)/(R – r+ ⊿ y)).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103264350B (en) * | 2013-06-05 | 2015-09-30 | 湖南楚翰智能科技有限公司 | A kind of indexable insert tip periphery grinding machine Zero-drive Chain and automatic clamping device |
| 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 |
| CN108549318B (en) * | 2018-05-11 | 2020-07-31 | 彩虹集团有限公司 | Numerical control machining method for improving quality of weir crest fillet of overflow brick |
| 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 |
| 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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| GB8806574D0 (en) * | 1988-03-19 | 1988-04-20 | Hepworth Eng Ltd | Machine tool error compensation systems |
| JPH03290705A (en) * | 1990-04-09 | 1991-12-20 | Mitsubishi Electric Corp | Numerical controller |
| CN2198068Y (en) * | 1994-08-12 | 1995-05-24 | 余永传 | Periphery mill chuck of hard alloy blade capable of rotation |
| JP3727005B2 (en) * | 1999-09-24 | 2005-12-14 | 義昭 垣野 | Error correction method for machine tools using parallel mechanism |
| WO2006014030A1 (en) * | 2004-08-06 | 2006-02-09 | Horkos Corporation | Roundness working method and roundness working device in nc machine tool |
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| CN1475328A (en) * | 2003-06-27 | 2004-02-18 | 上海磁悬浮交通发展有限公司 | Probe measuring locating method of super large over weight type workpiece machine processing |
Non-Patent Citations (2)
| Title |
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| 一种新的数控磨削加工两坐标联动轨迹插补算法;田新诚等;《中国机械工程》;20040131;第15卷(第2期);2可转位刀片刀尖圆弧的两坐标联动插补算法 * |
| 田新诚等.一种新的数控磨削加工两坐标联动轨迹插补算法.《中国机械工程》.2004,第15卷(第2期),2可转位刀片刀尖圆弧的两坐标联动插补算法. |
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