CN100491069C - Method and device for the on-line measuring roundness level of high-precision roller grinder and roller shape error - Google Patents

Abstract

The invention relates to an online measuring device and method of roller roundness and roller-shaped error for roller grinding machine with high precision. The roller can be mounted with eccentricity, the machine tool principal axis error and the machine tool guide error are separated by the two point error separating method, thereby greatly improving the measuring precision of the roller. When measuring the roller diameter, this measuring device can realize a plurality of measurements by one calibration. The invention has advantages that: a measuring device with two point error separating is provided, the data calculation measured by the device is simple, the measuring precision and the measuring efficiency of the roller is greatly improved. When an eddy-current test sensor 22(D) is mounted on the device to realize on-line monitoring of the roller surface quality.

Description

High-precision roller grinder roll circularity and roll forming error online measuring device and method

Technical field

The present invention relates to a kind of device of on CNC roll grinder, realizing roll circularity and roll forming of the roll on-line measurement, roll setting-up eccentricity, machine tool chief axis kinematic error and machine tool guideway error can be separated with two point tolerance partition methods, thereby improve the certainty of measurement of roll greatly.When measuring roller diameter, can realize once demarcating repeatedly measurement by this measurement mechanism.

Background technology

Along with the fast development of iron and steel metallurgy and automobile industry, more and more higher to the required precision of sheet metal.In order to suppress high-precision sheet material, it is excellent in important that the quality of roll just seems.Wherein the surface quality of the circularity of roll, roll forming precision and roll is the main factor of decision sheet material precision, and the final mass of roll is determined by roll grinder, so that the height of CNC roll grinder certainty of measurement also plays a part is very important.When tradition CNC roll grinder measurement mechanism is measured circularity, the setting-up eccentricity of roll and the spindle motion error of lathe and the deviation from circular from of roll are mixed, when measuring the roll forming of the roll error, the guiding error and the roll forming of the roll error of lathe mixed.Now these traditional roll measurement mechanisms do not have the function that the roll forming error of the deviation from circular from of machine tool system error and roll and roll is separated.Along with people's breaker roll high accuracy, high efficiency pursuit, processed roll is implemented on-line measurement, and the roll forming sum of errors machine tool system error of roll deviation from circular from and roll can be separated, not only can improve certainty of measurement, and the data after separating can also be used for the compensation control of digital control processing, help improving the machining accuracy and the efficient of roll.

Summary of the invention

The object of the present invention is to provide a kind of high-precision roller grinder roll circularity and roll forming error online measuring device and method, energy on-line measurement roll deviation from circular from and machine tool chief axis kinematic error, and roll sum of errors roll forming error can be separated with the machine tool system error, thereby raising certainty of measurement, and the data after separating can be used for the compensation control of digital control processing, help improving the machining accuracy and the efficient of roll.

For achieving the above object, design of the present invention is: when roll dressing or during roll rotation, do relative motion by being fixed on the measurement bay two displacement transducers and roller surface circle, obtain the redundancy of roll cross-sectional surface, and set up dynamic 2 circularity errors and separate equation, realize breaker roll circularity and the on-line measurement of machine tool chief axis kinematic error.Measure the method for roll forming of the roll sum of errors machine tool guideway (measurement bay guide rail) error, be when roll maintains static, do relative motion along the plain line of roller surface by two parallel displacement transducers, obtain the redundancy of the plain line of roll, and set up dynamic 2 straightness errors and separate equation, realize breaker roll roll forming sum of errors machine tool guideway (measurement bay guide rail) error online measuring.When measuring roller diameter, can realize once demarcating repeatedly measurement by this measurement mechanism.

According to above-mentioned inventive concept, the present invention adopts following technical proposals:

A kind of high-precision roller grinder roll circularity and roll forming error online measuring device comprise the roll that is installed on the roll centre frame, are installed in grinding carriage and measurement bay on the planker, it is characterized in that:

I. the fixedly connected crossbeam of described measurement bay, crossbeam and a pillar that is fixed on the grinding carriage are hinged; The oil cylinder of a hydraulic lifting adjuster and grinding carriage are hinged, and its piston rod outer end and crossbeam are hinged;

Ii. support about one by two high-precision bearings on the described measurement bay and revolve the high precision ball leading screw, revolve on this ball-screw and join a left-handed ball nut and a dextrorotation ball nut, left-handed ball nut is fixedlyed connected with a left measuring claw, the dextrorotation ball nut is fixedlyed connected with a right measuring claw, and left and right sides measuring claw revolves high-precision ball-screw about being parallel to being fixedly mounted on measurement bay a cylinder guide rod is slidingly matched; One end of this ball-screw connects the output shaft of a servomotor;

Iii. on the described measurement bay grating chi is housed, on the described right measuring claw grating reading head is housed;

The lower end of iv. described left and right sides measuring claw is equipped with and is measured sensing head conflict roll.

In above-mentioned measurement mechanism, described left measuring claw lower end has two to measure sensing head: one is grating displacement sensor (A), another eddy current inspection sensor (D); Described right measuring claw lower end has two to measure sensing head, is grating displacement sensor (B, C).

In above-mentioned measurement mechanism, the middle part and the right part of revolving the high precision ball leading screw about described are equipped with limit switch respectively.

A kind of high-precision roller grinder roll circularity and roll forming error online measuring method, adopt above-mentioned measurement mechanism to measure, it is characterized in that the time or during roll rotation according to roll dressing, do relative motion by two displacement transducers and the roller surface circle that are fixed on the measurement bay, obtain the redundancy of roll cross-sections surfaces, and set up dynamic 2 circularity errors and separate equation, realize the on-line measurement of breaker roll circularity and machine tool chief axis kinematic error; When roll maintains static, do relative motion by two parallel displacement transducers along the plain line of roller surface, obtain the redundancy of the plain line of roll, and set up dynamic 2 straightness errors and separate equation, realize breaker roll sum of errors machine tool guideway error online measuring.

The concrete operations step of above-mentioned measuring method is as follows:

(1) respectively two displacement transducer A, B are gathered signal and carry out the back summation of name power, draw dynamic 2 circularity error measuring values, its formula is:

H(θ)＝k ₁h(θ)+k ₃h(θ+α+β)

θ: be the corner of n measurement point, θ=n Δ θ=n2 π/N, n=0,1,2.....N-1 (as follows);

N: be isogonism sampling number weekly;

k ₁, k ₃: be respectively the weight coefficient of sensors A, B up and down;

The signal of H (θ): A, two sensors of B and;

H (θ): the deviation from circular from that is n measurement point sensors A;

H (θ+alpha+beta): the deviation from circular from that is n measurement point sensor B;

Alpha+beta: between lower sensor A and the upper sensor B angle being installed, α gets 90 ⁰, β=180-α-γ;

γ: being the setting angle of displacement transducer B, is experience angle value reference table 1, necessary given concrete value earlier when design, γ=180 ⁰-(alpha+beta);

(2) can solve weight coefficient k according to above-mentioned α, β ₁=1; k ₃=sin α/sin β ≈ 1;

(3) can solve q=α N/2 π according to above-mentioned α, β, in the p=β N/2 π formula, calculate l ₁=q+p; P, q: be intermediate parameters, calculate gained round numbers, q=α N/2 π, p=β N/2 π by formula; l ₁: be intermediate parameters, calculate gained, l by formula ₁=q+p;

(4) value of setting initial value h (0) is 0, the recurrence formula h (n+l that draws according to former steps ₁)=H (n)-h (n) calculates the roundness error of N measurement point by the computer programming recursion; Solve the deviation from circular from sequence at last;

H (n): expression deviation from circular from sequence;

H (n): the A at n point place, the signal of two sensors of B and;

(5) by N deviation from circular from sequential value substitution formula (1), utilize recurrence method by computer programming, it is as follows to obtain machine tool chief axis rotation error sequence:

δx(n)＝h(n)-H _A(n)

δy(n)＝-h(n+l ₁)

δ _X(n), δ _y(n): expression spindle rotation error X in rectangular coordinate system, the discrete series of Y both direction projection;

H _A(n): the output valve sequence of sensors A;

(6) set up the recursion primary condition, establish δ (0)=0, s (0)=0;

δ (i): be the component of measurement point i place guiding error on X-axis, wherein δ (0) is for measuring the component of guiding error on X-axis of initial point; I=0,1,2.....M-1 (as follows)

S (i): be measurement point i place roll forming of the roll error, wherein s (0) is for measuring the roll forming of the roll error of initial point;

M: count for measurement and will satisfy 2 multiple, get M=L/ Δ l;

L: for measurement point is installation interval between the sensing 18,19 at interval;

Δ l: be the sampling interval, and make l=Δ l;

(7) utilize computer programming to obtain first the roll forming error amount of locating: s (1)=y ₁(0)-y ₀(0); y ₀(i): be the output valve of sensor 18 at measurement point i place, wherein y ₀(0) for measuring the output valve of initial point;

y ₁(i): be the output valve of sensor 19 at measurement point i place, wherein y ₁(0) for measuring the output valve of initial point;

(8) utilize computer programming with step (7) substitution recurrence formula s (i+1)=y ₁(i)-y ₀(i)+s (i) calculates roll forming of the roll error sequence s (i); Measure to such an extent that roll forming of the roll error sequence s (i) revises according to concrete measured roll forming of the roll equation X (i), X (i) is provided by the producer of measured roll, and the different X of the roll forming of measurement (i) are just different;

(9) utilize computer programming with step (7), (8) substitution recurrence formula δ (i)=y ₀(0)-y ₀(i)+s (i) calculates guide rail craspedodrome error sequence δ (i).

Measuring principle of the present invention is as follows:

The measurement that roll circularity is separated with the machine tool chief axis kinematic error is when measuring the circularity in a certain cross section of roll, roll rotational speed reference table 3, and the measurement bay (1) that is installed on the planker (17) is static relatively.Utilize formula: h (n+l ₁)=H (n)-h (n) suitably sets the value of initial value h (0), can release n=1, and 2 ..., the roll roundness error h (n) at place, the whole collection points of N-1.Simultaneously, the also separable kinematic error that goes out machine tool chief axis is:

δx(n)＝h(n)-H _A(n)

δy(n)＝-h(n+l ₁)

The measurement that roll forming of the roll separates with the machine tool guideway error is that roll is motionless when measuring roll forming of the roll, is installed in measurement mechanism on the planker along with planker moves at a slow speed, and translational speed is between 0.1～3mm/min.Utilize error to separate the recursive matrix equation:

$\left[\begin{array}{c}s(i+1)\\ {\mathrm{\δ}}_i\end{array}\right]=\left[\begin{array}{cc}-1& 1\\ -1& 0\end{array}\right]\left[\begin{array}{c}[y_0\left(i\right)-y_0\left(0\right)\\ [y_1\left(i\right)-y_0\left(0\right)\end{array}\right]+\left[\begin{array}{cc}1& 0\\ 1& 0\end{array}\right]\left[\begin{array}{c}s\left(i\right)\\ 1\end{array}\right]$

N recursion of process can draw form error s (i) sequence and guide rail craspedodrome error delta (i) sequence of roll forming of the roll.Measure to such an extent that roll forming of the roll error sequence s (i) revises according to concrete measured roll forming of the roll equation X (i).

Roll circularity with the measuring principle that the machine tool chief axis kinematic error is separated is:

What this measurement mechanism was measured roll circularity and spindle motion error employing is two point tolerance separation methods, and two point tolerances separate ratio juris shown in Fig. 3 (b).Two point tolerance separation method principles are based on the expansion on the three point tolerance partition method bases.Three point tolerance separation method principles are shown in Fig. 3 (a), three sensors A (21), E are set, and (the principle explanation is quoted, do not use in the measurement mechanism), the extended line of B (18) intersects at the O point, be the centre of gyration, 0 is the least square center in cross section, and the α angle is that angle, the β angle of sensors A and E is the angle of sensor B and E.If h (θ) is the deviation from circular from of roll, δ x (θ), δ y (θ) are the component of main shaft gyration kinematic error on x, y.Obtain being output as by 3 sensors A, E, B in the measurement:

$\left\{\begin{array}{c}{H}_A=h\left(\mathrm{\θ}\right)+\mathrm{\δx}\left(\mathrm{\θ}\right)\\ H_E=h(\mathrm{\θ}+\mathrm{\α})+\mathrm{\δx}\left(\mathrm{\θ}\right)\cos \left(\mathrm{\α}\right)+\mathrm{\δy}\left(\mathrm{\θ}\right)\sin \left(\mathrm{\α}\right)\\ H_B=h(\mathrm{\θ}+\mathrm{\α}+\mathrm{\β})+\mathrm{\δx}\left(\mathrm{\θ}\right)\cos (\mathrm{\α}+\mathrm{\β})+\mathrm{\δy}\left(\mathrm{\θ}\right)\sin (\mathrm{\α}+\mathrm{\β})\end{array}\right.---\left(1\right)$

Three multiply by weight coefficient k1, k2, k3 respectively in the formula, obtain the signal of three sensors after the addition and are:

H(θ)＝k ₁h(θ)+k ₂h(θ+α)+k ₃h(θ+α+β) (2)

Weight coefficient is in the formula: k ₁=1; k ₂=-sin (alpha+beta)/sin (β); k ₃=sin α/sin β

The sensor E of cancellation y direction makes the angle between A, the B be: alpha+beta=180 ⁰-γ, if γ is an enough little angle, value reference table 1 is thought the parameter of (2) formula: k ₂≈ 0; k ₃≈ 1

Formula (2) becomes: H (θ)=h (θ)+h (θ+alpha+beta) (3)

When the roll roundness measurement, establish N and get even number for isogonism sampling number weekly, establishing p, q is integer, t is necessary for odd number then to be had:

Δθ＝2π/N；q＝αN/2π；p＝Nβ/2π；t＝γN/2π

Then can obtain measuring equation and be: make l corresponding to the discretization of formula (3) ₁=q+p

H(n)≈h(n)+h(n+q+p)＝h(n)+h(n+l ₁) (4)

Formula (4) is transformed to: h (n+l ₁)=H (n)-h (n) (5)

Suitably set the value of initial value h (0), just can release n=1 according to recurrence formula (5), 2 ..., the roll roundness error h (n) at place, the whole collection point of N-1.The kinematic error of isolating machine tool chief axis simultaneously is:

δx(n)＝h(n)-H _A(n)

δy(n)＝-h(n+l ₁) (6)

Displacement transducer A horizontal setting among the present invention, the setting angle γ of displacement transducer B, the recommendation of sampling number N, t is as shown in table 1 weekly:

Table 1 measurement parameter recommendation

N	γ (degree)	α (degree)	T (being odd number)
				N≥256	5.625≥γ≥1.406	90	5.625N/2π≥t≥1.406N/2π

Roll forming of the roll with the measuring principle that the machine tool guideway error is separated is:

What this measurement mechanism was measured roll forming of the roll and guiding error employing is two point tolerance partition methods, and schematic diagram as shown in Figure 4.The component of guiding error on X-axis that is located at measurement point i place measuring mechanism is δ (i), and tested roll forming of the roll error is s (i), and sensor 18,19 is output as y ₀(i), y ₁(i), l is that measurement point is installation interval between the sensing 18,19 at interval, and M will satisfy 2 multiple for measuring to count.Δ l is the sampling interval, and makes l=m Δ l (m is an integer).The roll grinder planker direction of motion is defined as the OZ direction, and the location definition at first sampled point place that sensor 18 carries out is the O point.Adopt uniformly-spaced discrete sampling during measurement, the sampling interval can be listed the output equation of sensor for getting Δ l=l by Fig. 4:

y ₀(i)＝s(i)-δ(i) (7)

y ₁(i)＝s(i+1)-δ(i) (8)

Formula (8) is subtracted each other with formula (7) and is put in order to such an extent that time domain two-point method error is separated recurrence formula:

s(i+1)＝y ₁(i)-y ₀(i)+s(i) (9)

Set up the recursion primary condition, establish δ (0)=0, s (0)=0, s (1)=y ₁(0)-y ₀(0) release thus:

s(2)＝y ₁(1)-y ₀(1)+s(1) (10)

s(3)＝y ₁(2)-y ₀(2)+s(2) (11)

S (i) formula substitution formula (7) is obtained guide rail craspedodrome kinematic error δ (i):

δ(i)＝y ₀(0)-y ₀(i)+s(i) (12)

By on can get error and separate the recursive matrix equation:

$\left[\begin{array}{c}s(i+1)\\ {\mathrm{\δ}}_i\end{array}\right]=\left[\begin{array}{cc}-1& 1\\ -1& 0\end{array}\right]\left[\begin{array}{c}[y_0\left(i\right)-y_0\left(0\right)\\ [y_1\left(i\right)-y_0\left(0\right)\end{array}\right]+\left[\begin{array}{cc}1& 0\\ 1& 0\end{array}\right]\left[\begin{array}{c}s\left(i\right)\\ 1\end{array}\right]---\left(13\right)$

N recursion of process can be drawn the form error sequence and the guiding error sequence of roll forming of the roll by (13).Measure to such an extent that roll forming of the roll error sequence s (i) revises according to concrete measured roll forming of the roll equation X (i).

Displacement transducer 18,19 horizontal parallel are settled among the present invention, and L is for measuring length as shown in Figure 2.Measurement parameter is chosen referring to table 2.

Table 2 measurement parameter recommendation

M	Δl
		M≥L/Δl	L/m (m is an integer)

Table 3 roundness measurement workpiece rotational frequency recommendation n unit: rpm

Roller diameter mm	250～500	500～630	630～1250	Greater than 1250
					N	5～10	4～8	3～5	Less than 3

The present invention compares with existing roll measurement mechanism, the present invention has following outstanding substantive distinguishing features and remarkable advantage: proposed to have the measurement mechanism that two point tolerances separate, data computation with this measurement device is simple, the deviation from circular from of roll setting-up eccentricity, machine tool chief axis kinematic error and roll can be separated and the separating of roll forming of the roll and machine tool guideway error, thereby improve the certainty of measurement of roll greatly.When measuring roller diameter, can realize once demarcating repeatedly measurement by this measurement mechanism.The on-line measurement that this method also can be generalized to the deviation from circular from of other big axial workpieces and machine tool chief axis kinematic error and guiding error with separate.When the on-line monitoring that an eddy current inspection sensor 22 (D) can also be realized roller surface quality is installed on this device.

Description of drawings

Fig. 1 is a measurement mechanism schematic diagram of the present invention.

Fig. 2 is a sensor of the present invention installation site schematic diagram.

Fig. 3 is a deviation from circular from partition method schematic diagram of the present invention.

Fig. 4 is roll forming of the roll error separation principle figure of the present invention.

The specific embodiment

Details are as follows in conjunction with the accompanying drawings for the preferred embodiments of the present invention:

Referring to Fig. 1, this high-precision roller grinder roll circularity and roll forming error online measuring device, comprise the roll (23) that is installed on the roll centre frame (20), be installed in grinding carriage (16) and measurement bay (1) on the planker (17), it is characterized in that: (a) the fixedly connected crossbeam of described measurement bay (1) (13), crossbeam (13) is hinged with a pillar (15) that is fixed on the grinding carriage (16); The oil cylinder of a hydraulic lifting adjuster (14) and grinding carriage (16) are hinged, and its piston rod outer end and crossbeam (13) are hinged; (b) described measurement bay (1) is gone up by about one of two high-precision bearings (25,11) support and is revolved high precision ball leading screw (3), revolve on this ball-screw (3) and join a left-handed ball nut (2) and a dextrorotation ball nut (9), left-handed ball nut (2) is fixedlyed connected with a left measuring claw (24), dextrorotation ball nut (2) is fixedlyed connected with a right measuring claw (8), and left and right sides measuring claw (24,8) revolves high-precision ball-screw (3) about being parallel to being fixedly mounted on measurement bay (1) a cylinder guide rod (4) is slidingly matched; One end of this ball-screw (3) connects the output shaft of a servomotor (12); C) on the described measurement bay (1) grating chi (6) is housed, grating reading head (7) is housed on the described right measuring claw (8); (d) lower end of described left and right sides measuring claw (24,8) is equipped with and is measured sensing head conflict roll (23).Described left measuring claw (24) lower end has two to measure sensing head (21,22): one is grating displacement sensor (A), another eddy current inspection sensor (D); Described right measuring claw (8) lower end has two to measure sensing head (18,19), is grating displacement sensor (B, C).The middle part and the right part of revolving high precision ball leading screw (3) about described are equipped with limit switch (5,10) respectively.Machine-Tool Control servomotor 12 by about revolve and revolve ball nut 2,9 about high precision ball leading screw 3 drives and drive left and right sides measuring claw 24,8 and adjust the position of sensor along cylindrical guide 4, particular location is shown by grating chi 6 and grating reading head 7.When measuring, once demarcate and to take multiple measurements.

Behind Fig. 2, Fig. 3 displacement transducer A (21) and B (18) location, displacement transducer A horizontal setting, the setting angle γ of displacement transducer B, the recommendation of sampling number N, t is as shown in table 1 weekly, roll rotational speed reference table 3, and the measurement mechanism that is installed on the slide carriage is static relatively.

Symbol description:

θ: be the corner of n measurement point, θ=n Δ θ=n2 π/N, n=0,1,2.....N-1 (as follows);

k ₁, k ₃: be respectively the weight coefficient of sensors A (18), B (21) up and down;

The signal of H (θ): A (18), (21) two sensors of B and;

H (θ): the deviation from circular from that is n measurement point sensors A (18);

H (θ+alpha+beta): the deviation from circular from that is n measurement point sensor B (21);

Alpha+beta: between lower sensor A (18) and the upper sensor B (21) angle being installed, α gets 90 ⁰, β=180-α-γ;

γ: being the setting angle of displacement transducer B, is experience angle value reference table 1, necessary given concrete value earlier when design, γ=180 ⁰-(alpha+beta).

N: be isogonism sampling number weekly;

P, q: be intermediate parameters, calculate gained round numbers, q=aN/2 π, p=β N/2 π by formula;

l ₁: be intermediate parameters, calculate gained, l by formula ₁=q+p;

H (n): expression deviation from circular from sequence;

H (n): the signal of the A (18) at n point place, (21) two sensors of B and;

δ _X(n), δ _y(n): expression spindle rotation error X in rectangular coordinate system, the discrete series of Y both direction projection;

H _A(n): the output valve sequence of sensors A (18);

The method that online circularity of roll and machine tool chief axis kinematic error are measured, concrete steps are:

(1) respectively two displacement transducer A (18), B (21) are gathered signal and carry out the back summation of name power, draw dynamic 2 circularity error measuring values, its formula is:

H(θ)＝k ₁h(θ)+k ₃h(θ+α+β)

(2) can solve weight coefficient k according to above-mentioned α, β ₁=1; k ₃=sin α/sin β ≈ 1;

(3) can solve q=α N/2 π according to above-mentioned α, β, in the p=β N/2 π formula, calculate l ₁=q+p;

(4) value of setting initial value h (0) is 0, just the recurrence formula h (n+l that can draw according to former steps ₁)=H (n)-h (n) calculates the roundness error of N measurement point by the computer programming recursion.Solve the deviation from circular from sequence at last.

(5) by N deviation from circular from sequential value substitution formula (1), utilize recurrence method by computer programming, it is as follows to obtain machine tool chief axis rotation error sequence:

δx(n)＝h(n)-H _A(n)

δy(n)＝-h(n+l ₁)

Behind Fig. 2, Fig. 4 displacement transducer 18,19 location, displacement transducer 18,19 horizontal parallel are settled, and L is for measuring length as shown in Figure 2, and measurement parameter is chosen referring to table 2, be installed in measurement mechanism on the planker along with planker moves at a slow speed, translational speed is between 0.1～3mm/min.

Symbol description:

δ (i): be the component of measurement point i place guiding error on X-axis, wherein δ (0) is for measuring the component of guiding error on X-axis of initial point; I=0,1,2.....M-1 (as follows)

M: count for measurement and will satisfy 2 multiple, get M=L/ Δ l;

L: for measurement point is installation interval between the sensing 18,19 at interval;

Δ l: be the sampling interval, and make l=Δ l;

S (i): be measurement point i place roll forming of the roll error, wherein s (0) is for measuring the roll forming of the roll error of initial point;

y ₀(i): be the output valve of sensor 18 at measurement point i place, wherein y ₀(0) for measuring the output valve of initial point;

y ₁(i): be the output valve of sensor 19 at measurement point i place, wherein y ₁(0) for measuring the output valve of initial point;

The method of online roll forming of the roll and machine tool guideway error measure, concrete steps are:

(6) set up the recursion primary condition, establish δ (0)=0, s (0)=0;

(7) utilize computer programming can obtain first the roll forming error amount of locating: s (1)=y ₁(0)-y ₀(0);

(8) utilize computer programming with step (7) substitution recurrence formula s (i+1)=y ₁(i)-y ₀(i)+s (i) calculates roll forming of the roll error sequence s (i); Measure to such an extent that roll forming of the roll error sequence s (i) revises according to concrete measured roll forming of the roll equation X (i), X (i) is provided by the producer of measured roll, and the different X of the roll forming of measurement (i) are just different.

(9) utilize computer programming with step (7), (8) substitution recurrence formula δ (i)=y ₀(0)-y ₀(i)+s (i) calculates guide rail craspedodrome error sequence δ (i).

Claims (3)

1. high-precision roller grinder roll circularity and roll forming error online measuring device comprise the roll (23) that is installed on the roll centre frame (20), are installed in grinding carriage (16) and measurement bay (1) on the planker (17), it is characterized in that:

I. the fixedly connected crossbeam of described measurement bay (1) (13), crossbeam (13) is hinged with a pillar (15) that is fixed on the grinding carriage (16); The oil cylinder of a hydraulic lifting adjuster (14) and grinding carriage (16) are hinged, and its piston rod outer end and crossbeam (13) are hinged;

The described measurement bay of ii (1) is gone up by about one of two high-precision bearings (25,11) support and is revolved high precision ball leading screw (3), revolve on this ball-screw (3) and join a left-handed ball nut (2) and a dextrorotation ball nut (9), left-handed ball nut (2) is fixedlyed connected with a left measuring claw (24), dextrorotation ball nut (2) is fixedlyed connected with a right measuring claw (8), and left and right sides measuring claw (24,8) revolves high precision ball leading screw (3) about being parallel to being fixedly mounted on measurement bay (1) a cylinder guide rod (4) is slidingly matched; One end of this ball-screw (3) connects the output shaft of a servomotor (12);

Grating chi (6) is housed on the iii. described measurement bay (1), grating reading head (7) is housed on the described right measuring claw (8);

The lower end of iv. described left and right sides measuring claw (24,8) is equipped with and is measured sensing head conflict roll (23).

2. high-precision roller grinder roll circularity according to claim 1 and roll forming error online measuring device, it is characterized in that described left measuring claw (24) lower end has two to measure sensing head (21,22): one is grating displacement sensor A (21), and another is eddy current inspection sensor D (22); Described right measuring claw (8) lower end has two to measure sensing head, is grating displacement sensor.

3. high-precision roller grinder roll circularity according to claim 1 and roll forming error online measuring device is characterized in that the middle part and the right part of revolving high precision ball leading screw (3) about described be equipped with limit switch (5,10) respectively.

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