CN101900665A - Estimation method of abrasion wheel grinding parameter - Google Patents

Abstract

The invention relates to an estimation method of an abrasion wheel grinding parameter. In the estimation method, grinding process is only needed to be carried out once. An abrasive ratio as well as workpiece grinding rigidity, abrasion wheel surface contact rigidity and abrasion wheel abrasiveness rigidity influencing dynamic characteristics in the grinding process can be synchronously obtained through measuring a first width and a second width of a first ring of spiral grinding grain and a first grinding depth and a second grinding depth relative to the positions of the first width and the second width. Thereby, a user can estimate abrasion wheel quality, workpiece characteristics and stability of a grinding dynamic system easily so as to solve the problem of grinding vibration, and the estimation method is beneficial for a grinding manager to judging whether the abrasion wheel satisfies requirements.

Description

The method of estimation of abrasion wheel grinding parameter

Technical field

The present invention relates to a kind of method of estimation of abrasive parameters, relate to a kind of method of estimation of abrasion wheel grinding parameter in particular.

Background technology

In the process of lapping, the cutting rigidity of grinding wheel, the cutting rigidity of grinding work-piece and emery wheel contact rigidity with grinding work-piece can directly influence grinding stability.Selected for use not at that time when above-mentioned characteristic, and can make that the grinding vibration was excessive, and then influenced the surface quality of grinding work-piece.For instance, the excessive grinding slivering that causes roller surface of roll grinding vibration.And this may cause multiple adverse influence:

(1) grinds slivering and directly be transferred to the vibration slivering that causes steel strip surface light and dark on the steel band.

(2) be transferred on the back flow roll, cause to roll and prolong power and dynamically change, and form steel strip surface vibration slivering.

(3) grind the flutter that the slivering pitch just in time triggers milling train, cause steel band vibration slivering.

The steel band of these tool vibration sliverings may be picked and be moved back behind the downstream, also might have influence on the winding up roller surface of downstream rewinding line again, and form the mechanism of another transfer printing in the locality.So the influence of steel strip surface vibration slivering is very deep and broad, roll prolong operation have to careful attention.

In the method for estimation of conventional abrasion wheel grinding parameter, Bartalucci and Lisini[1] act on the emery wheel with static force, measure strength and deflection calculating static emery wheel rigidity, and utilize impulse test to measure dynamic emery wheel contact rigidity, both relatively gaps as a result are also little.Yet, confirmed afterwards that the result of resulting emery wheel contact rigidity of static experiment and actual process still had one section gap.

In addition, Inasaki and Yonetsu[2] also utilize hertz to contact the rigidity that (Hertzian contact) theory of mechanics is inquired into emery wheel and workpiece contact area, illustrate that the contact rigidity of emery wheel is similar to non-linear spring; People such as Hashimoto [3] are mode by experiment, determines to exist between emery wheel contact rigidity and the radial force relation of power power; People such as Ramos [4] are on the board of cylindrical lapping, radially grind (plunge grinding) with stable radial feed, the stable back of power to be ground feed-disabling, the time constant (time constant) of record grinding force decline curve is to calculate the degree of depth and the technology rigidity of the actual grinding of workpiece.The method of estimation of the abrasion wheel grinding parameter of above-mentioned document, it is auxiliary all need to set up dynamometer, and must ignore the effect of emery wheel abrasion rigidity ks and grinding ratio r.

Therefore, the method for estimation that is necessary to provide an innovation and is rich in the abrasion wheel grinding parameter of progressive is to address the above problem.

Below be to tabulate with reference to prior art:

1.B.Bartalucci, G.G.Lisini, " grinding technics instability (Grinding process instability), " Transaction ASME Journal Engineer Industry.Vol.91, pp.597-606,1969.

2.I.Inasaki, S.Yonetsu, " the regeneration flutter in the grinding (Regenerative chatter in grinding), " in:Proc.of the 18th Int.Mach.Tool Des.and Res.Conf., Oxford, pp.423-429,1977.

3.F.Hashimoto, J.Yoshioka, M.Miyashita, H.Sato, " the continuous estimation of the rate of rise of flutter in the grinding technics (Sequential estimation of growth rate of chatter vibration in grinding process), " Annals ofthe CIRP, Vol.33 (1), pp.259-263,1984.

4.J.C.Ramos, J.Vinolas, F.J.Nieto, " cutting rigidity and the short-cut method that contacts rigidity (A simplified methodology to determine the cutting stiffness and the contactstiffness in the plunge grinding process) in definite radially grinding technics; " International Journal of Machine Tools andManufacture, pp.33-49,2001.

Summary of the invention

The invention provides a kind of method of estimation of abrasion wheel grinding parameter, it is in order to the abrasive parameters of the emery wheel of estimation grinder station, wherein said grinder station has board and grinds quiet rigidity, said method comprising the steps of: (a) always grind feeding according to setting along first direction, with described abrasion wheel grinding workpiece, and the surface at described workpiece forms the helical grinding lines, the circumference of wherein said emery wheel has the emery wheel linear speed, the circumference of described workpiece has the workpiece linear speed, described first direction is the direction from the head end of described workpiece to tail end, and the described helical grinding lines that is positioned at described head end has flaring helical grinding lines; (b) measure first width and second width of described flaring helical grinding lines according to described first direction, and measure first grinding depth and second grinding depth with respect to the described workpiece of described first width and described second width position; (c) according to described emery wheel be worn away volume and described workpiece be worn away the volume calculation wear resistance ratio; And (d) according to described board grind quiet rigidity, feeding, described first width, described second width, described first grinding depth and described second grinding depth are always ground in described setting, calculate workpiece and grind rigidity, and according to described board grind quiet rigidity, feeding, described first width, described second width, described first grinding depth, described second grinding depth, described emery wheel linear speed and described workpiece linear speed are always ground in described setting, calculate wheel face contact rigidity and emery wheel abrasion rigidity.

The method of estimation of abrasion wheel grinding parameter of the present invention only need be carried out once grinding technology, surface geometry size after can grinding by measuring workpieces, identify workpiece and grind rigidity, wheel face contact rigidity and emery wheel abrasion rigidity, to understand the related process parameter that influences the process of lapping dynamic perfromance, and then solve the problem of grinding vibration, and be beneficial to and grind managerial personnel to judge whether emery wheel meets required.Whereby, the user can assess the stability of emery wheel quality, workpiece characteristic and grinding dynamic system easily.

Description of drawings

Fig. 1 shows that grinding dynamic stiffiness simulates synoptic diagram;

Fig. 2 shows the system chart that grinds dynamic system;

Fig. 3 shows the nyquist diagram of grinding system characteristic equation of the present invention;

Fig. 4 shows the synoptic diagram of the method for estimation of abrasion wheel grinding parameter of the present invention;

Fig. 5 shows that the present invention forms the process schematic representation of helical grinding lines on the surface of workpiece;

Fig. 6 A shows that to 6C the present invention measures the width of flaring helical grinding lines and the synoptic diagram of grinding depth;

Fig. 7 shows the synoptic diagram that is worn away volume of workpiece of the present invention; And

Fig. 8 shows that the present invention utilizes technology rigidity identification model to calculate the synoptic diagram of technology rigidity.

Embodiment

Fig. 1 shows that grinding dynamic stiffiness simulates synoptic diagram; Fig. 2 shows the system chart that grinds dynamic system.Wherein, the correlation parameter of dynamic mode is described as follows, k _m: the quiet rigidity of board; k _c: the contact rigidity of wheel face; k _s: emery wheel abrasion rigidity; k _w: workpiece grinds rigidity; T _s: the emery wheel swing circle; T _w: the Workpiece Rotating cycle; G _s, G _w: emery wheel and structure kinematic function; d _m: the relative shift of emery wheel and workpiece; d _s: the total abrasion value of emery wheel; d _w: the total abrasion value of workpiece; _Δd _s: emery wheel moment abrasion value; _Δd _w: workpiece moment abrasion value; d _f: always grind feeding; f _r: abrasive power radially.Wherein, in Fig. 1, the contact rigidity of wheel face, emery wheel abrasion rigidity and workpiece grind rigidity respectively with the spring k of equivalence _c, k _sAnd k _wExpression.

Cooperation is with reference to figure 1 and Fig. 2, and wherein the distortion of the distortion of the abrasion of the grinding of workpiece, emery wheel, emery wheel and board all can influence the grinding dynamic system, and the parameter of influence grinding dynamic system comprises: the quiet rigidity k of board _m, wheel face contact rigidity k _c, workpiece grinds rigidity k _wWith emery wheel abrasion rigidity k _s, k wherein _c, k _wAnd k _sAbbreviate the technology rigidity as.

When giving always to grind feeding d _fThe time, the radially abrasive power f that is produced _rCan influence the grinding of workpiece, the abrasion of emery wheel, the distortion of emery wheel and the distortion of board simultaneously.Wherein, workpiece grinds and emery wheel abrasion meeting has revival should produce (that is, among Fig. 2 because of Workpiece Rotating and emery wheel rotate

With ).Amount under last time grinding is with when time amount of grinding has a phase differential, and this phase differential causes the unequal and abrasive power dynamic change of grinding thickness, therefore causes the vibration behavior, should and produce revival.Its medium plain emery wheel revival should

Answer with the workpiece revival

The limit of grinding system may be moved toward RHP, make grinding system present unsure state (grinding vibration promptly takes place), so the revival of emery wheel and workpiece should will be the main cause that influences grinding vibration.

The transmission letter formula of the grinding dynamic system of Fig. 2 is expressed as follows formula (1):

$\frac{F\left(s\right)}{d_f}=\frac{1}{\frac{1}{k_w(1-\mathrm{\μ}{e}^{-s{T}_w})}+\frac{1}{k_s(1-e^{-{\mathrm{sT}}_s})}+[G_w\left(s\right)+G_s\left(s\right)]+\frac{1}{k_c}}---\left(1\right)$

Wherein the characteristic equation of (1) formula is

$-(\frac{1}{k_c}+\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="k\; w"\; filenames="H2009101430504E0000021.png,H2009101430504E0000031.png"\; state="\{\{state\}\}">k</figure-callout>}}_w}\frac{1}{{1-e}^{-\mathrm{j\&omega;}{T}_w}}+\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="k\; s"\; filenames="H2009101430504E0000021.png,H2009101430504E0000031.png"\; state="\{\{state\}\}">k</figure-callout>}}_s}\frac{1}{1-e^{-\mathrm{j\&omega;}{T}_s}})=G\left(\mathrm{j\&omega;}\right)---\left(2\right)$

At this, function F (s) is in order to represent radially abrasive power f _r, G=G _w+ G _s, it can be considered 1/k _mAgain (2) formula is depicted as nyquist diagram, as shown in Figure 3.Wherein, when the camber line C1 of the transmission letter formula of the grinding dynamic system of the feature straight line L1 of left side among Fig. 3 and right-hand part intersects, promptly produce the dynamic instability phenomenon.Therefore, the distance D 1 of the camber line C1 that whether stablizes the transmission letter formula that is left side feature straight line L1 and right-hand part grinding dynamic system is ground in control, that is, and and as the contact rigidity k of wheel face _c, workpiece grinds rigidity k _wWith emery wheel abrasion rigidity k _sEtc. the technology rigidity more hour, it is stable more to grind dynamic system, otherwise it is unstable more then to grind dynamic system.In Fig. 3, the value of described distance D 1 is

The method of estimation of abrasion wheel grinding parameter of the present invention can estimate the contact rigidity k of the wheel face that grinds dynamic system exactly _c, workpiece grinds rigidity k _wWith emery wheel abrasion rigidity k _s, solving the problem of grinding vibration, and be beneficial to and grind managerial personnel to judge whether emery wheel meets required.

Fig. 4 shows the synoptic diagram of the method for estimation of abrasion wheel grinding parameter of the present invention.The method of estimation of described abrasion wheel grinding parameter can be in order to the abrasive parameters of the emery wheel of estimating grinder station, and wherein said grinder station has board and grinds quiet rigidity, and wherein, described board grinds quiet rigidity and can record via the rigidity experiments of measuring.

Refer step S41, always grind feeding along first direction according to setting, with described abrasion wheel grinding workpiece (for example: worker's roller), and the surface at described workpiece forms the helical grinding lines, the circumference of wherein said emery wheel has the emery wheel linear speed, the circumference of described workpiece has the workpiece linear speed, and described first direction is the direction from the head end of described workpiece to tail end, and the described helical grinding lines that is positioned at described head end has flaring helical grinding lines.Wherein, when described emery wheel grinds described workpiece along described first direction, just begun to cut the first lap lines that described workpiece forms described helical grinding lines, can form the grinding degree of depth of continuous wide variety at described surface of the work, this is described flaring helical grinding lines.

In step S41, it is according to the diameter and the described emery wheel linear speed of revolution speed calculating of circular constant, described emery wheel, and according to the diameter and the described workpiece linear speed of revolution speed calculating of circular constant, described workpiece.

Described emery wheel linear speed can be represented by following formula (3):

V _s＝π×D _s×f _s (3)

Described workpiece linear speed can be represented by following formula (4):

V _w＝π×D _w×f _w (4)

In (3) and (4) formula, π is a circular constant; D _sBe grinding wheel diameter; f _sBe grinding wheel speed; D _wBe diameter of work; f _wBe workpiece rotational frequency.

In addition, in step S41, described emery wheel moves along described first direction with relative moving speed, and described surface of the work be ground the part not overlapping, make the surface of described workpiece form described helical grinding lines.

Fig. 5 shows that the present invention forms the process schematic representation of helical grinding lines on the surface of workpiece, and wherein said workpiece 51 is worker's roller.Cooperation is with reference to figure 4 and Fig. 5, and in the present embodiment, step S41 comprises: step S411, and at the described head end 511 marks grinding initial point x of described workpiece 51 ₀With step S412, from described grinding initial point x ₀Along described first direction (shown in the arrow of worker's roller as described in Fig. 5 top is parallel to) with as described in emery wheel 52 grind as described in workpiece 51, to form described helical grinding lines 512.Preferably, the step that before step S411, comprises described emery wheel 52 of finishing and described workpiece 51 surfaces in addition.

Behind finishing described emery wheel 52 and described workpiece 51 surfaces, with the described emery wheel 52 described workpiece 51 of contact and write down the x coordinate, with as described grinding initial point x ₀(shown in Fig. 5 (a)) withdraws from described emery wheel 52 (shown in Fig. 5 (b) and 5 (c)) then.Then, described emery wheel 52 moves on to default grinding depth d _f(always grinding feeding) position, the x of this moment sits target value must be made as x ₀-d _f(shown in Fig. 5 (d)).At last, grind along described first direction, form described helical grinding lines 512 (shown in Fig. 5 (e)) with surface at described workpiece 51 according to the rotating speed of the described workpiece of setting 51, the rotating speed and vehicle frame (the scheming not shown) speed of described emery wheel 52.

Fig. 6 A shows that to 6C the present invention measures the width of flaring helical grinding lines and the synoptic diagram of grinding depth.Cooperation to 6C and step S42, is measured the first width w of described flaring helical grinding lines 512 with reference to figure 6A according to described first direction ₁With the second width w ₂, and measure with respect to the described first width w ₁With the described second width w ₂The first grinding depth d of the described workpiece 51 of position ₁With the second grinding depth d ₂In the present embodiment, step S42 comprises: step S421, from the side periphery of the described head end 511 of described workpiece 51, measure the described first width w along described first direction ₁With the described first grinding depth d ₁(shown in Fig. 6 B); Step S422 rotates described workpiece 51 1 angles, and the preferred anglec of rotation is 150 degree; With step S423,, measure the described second width w along described first direction from the side periphery of the described head end 511 of described workpiece 51 ₂With the described second grinding depth d ₂(shown in Fig. 6 C).

Wherein, the present invention measures the described first width w with distance measuring instrument ₁With the described first grinding depth d ₁And the described second width w ₂With the described second grinding depth d ₂, and described distance measuring instrument can be displacement meter.Preferably, the probe of described distance measuring instrument is near the position that just begins to cut described workpiece.

Refer step S43, according to described emery wheel be worn away volume and described workpiece be worn away the volume calculation wear resistance ratio.In the present embodiment, its according to the width of described emery wheel and described abrasion wheel grinding before and grind after diameter calculate described emery wheel and be worn away volume, and calculate described workpiece according to the grinding depth of the diameter of described workpiece, described helical grinding lines and width and be worn away volume.Preferably, in step S43, measure before the described abrasion wheel grinding with π tape (PI-tape) and grind after diameter, and measure the grinding depth of described helical grinding lines with displacement meter.

With reference to figure 7, it shows the synoptic diagram that is worn away volume of workpiece of the present invention, and wherein, the workpiece of each circle helical grinding lines 512 is worn away volume among the rectangular Fig. 7 of corresponding respectively to of a plurality of rectangles (a) among Fig. 7 (b).Described wear resistance ratio r is defined as: the volume that is worn away that is worn away volume/emery wheel of workpiece.Described wear resistance ratio r can arrive the change in depth of the described helical grinding lines 512 of tail end 513 via the head end 511 of workpiece 51, cooperates the diameter abrasion value of emery wheel to ask for.As calculated, described wear resistance ratio r can represent by following formula (5):

$r=\frac{4D_w\mathrm{\&Sigma;D}}{({\mathrm{<figure-callout\; id="1"\; label="D\; s"\; filenames="H2009101430504E0000021.png,H2009101430504E0000031.png"\; state="\{\{state\}\}">D</figure-callout>}}_s^1-{\mathrm{<figure-callout\; id="2"\; label="D\; s"\; filenames="H2009101430504E0000031.png"\; state="\{\{state\}\}">D</figure-callout>}}_s^2)}---\left(5\right)$

Wherein, D _wBe diameter of work, D is every time the helical grinding lines degree of depth, D _S1Be the grinding wheel diameter before grinding, D _S2Be the grinding wheel diameter after grinding.

Refer step S44 grinds quiet rigidity k according to described board _m, described setting always grinds feeding d _f, the described first width w ₁, the described second width w ₂, the described first grinding depth d ₁With the described second grinding depth d ₂, calculate workpiece and grind rigidity k _w, and grind quiet rigidity k according to described board _m, described setting always grinds feeding d _f, the described first width w ₁, the described second width w ₂, the described first grinding depth d ₁, the described second grinding depth d ₂, described emery wheel linear speed V _sWith described workpiece linear speed V _w, calculate wheel face contact rigidity k _cWith emery wheel abrasion rigidity k _s

In the present embodiment, before step S44, comprise the step of setting up technology rigidity identification model in addition, utilize described technology rigidity identification model to calculate described workpiece again and grind rigidity k _w, described wheel face contact rigidity k _cWith described emery wheel abrasion rigidity k _s

With reference to figure 8, it shows that the present invention utilizes technology rigidity identification model to calculate the synoptic diagram of technology rigidity.The foundation of described identification model needs the result of two different emery wheels of width through twice processing, cooperates known board to grind quiet rigidity and default conditions such as total grinding feeding, carries out the calculating of technology rigidity.Described identification model conditions needed is: total grinding feeding that the width of (1) two emery wheel and twice grinding are default; (2) board grinds quiet rigidity (being recorded by experiment); (3) grinding depth of two of different in width abrasion wheel grinding workpiece (getting) by the profile measurement after grinding.

Cooperation is subjected to a radially abrasive power f who is produced when coming self-grind with reference to figure 1, Fig. 2 and Fig. 8 when grinding dynamic system _rThe time, three equivalent spring k of Fig. 1 _c, k _sAnd k _w(be equivalent to the contact rigidity k of wheel face respectively _c, emery wheel abrasion rigidity k _sGrind rigidity k with workpiece _w) total deformation be:

d _c+d _s+d _m+d _w＝d _f(6)

With (6) formula with divided by abrasive power f radially _rAfter can get:

$\frac{d_c+d_s+d_m+d_w}{f_r}=\frac{d_f}{f_r}---\left(7\right)$

(7) physical significance in formula left side is the contact rigidity k of representative wheel face _c, emery wheel abrasion rigidity k _sGrind rigidity k with workpiece _wThree springs comprehensively flexible, therefore (7) formula can be expressed as in addition:

$\frac{1}{k_c}+\frac{1}{k_s}+\frac{1}{k_m}+\frac{1}{k_w}=\frac{d_f}{f_r}---\left(8\right)$

When the emery wheel with different in width grinds, except the quiet rigidity k of board _mValue fixing outside, the contact rigidity k of wheel face _c, emery wheel abrasion rigidity k _sGrind rigidity k with workpiece _wAll be assumed to be with grinding wheel width w and be directly proportional, therefore (8) formula can be rewritten as:

$\frac{1}{{\mathrm{wk}}_{\mathrm{cu}}}+\frac{1}{{\mathrm{wk}}_{\mathrm{su}}}+\frac{1}{k_m}+\frac{1}{{\mathrm{wk}}_{\mathrm{wu}}}=\frac{d_f}{f_r}---\left(9\right)$

Wherein, k _CuBe the emery wheel contact rigidity of unit width, k _SuBe the emery wheel abrasion rigidity of unit width, and k _WuThe workpiece that is unit width grinds rigidity, and three's unit is N/m-mm (newton/micron-centimetre).

The result that the above-mentioned hypothesis of foundation is derived is when width is respectively w ₁And w ₂Two emery wheels of same size when grinding, (9) formula can be write respectively becomes (10) formula and (11) formula:

$\frac{1}{w_1{k}_{\mathrm{cu}}}+\frac{1}{w_1{k}_{\mathrm{su}}}+\frac{1}{k_m}+\frac{1}{w_1{k}_{\mathrm{wu}}}=\frac{d_f}{f_{r1}}---\left(10\right)$

$\frac{1}{w_2{k}_{\mathrm{cu}}}+\frac{1}{w_2{k}_{\mathrm{su}}}+\frac{1}{k_m}+\frac{1}{w_2{k}_{\mathrm{wu}}}=\frac{d_f}{f_{r2}}---\left(11\right)$

F wherein _R1And f _R2Be respectively the radially abrasive power of twice grinding, in addition, workpiece grinds rigidity and equals radially abrasive power f again _rGrind depth D divided by reality, therefore can obtain (12) formula and (13) formula:

$w_1{k}_w=\frac{f_{r1}}{D_1}---\left(12\right)$

$w_2{k}_w=\frac{f_{r2}}{D_2}---\left(13\right)$

Also cooperate to (13) formula by (10) formula Identification formula (14) formula that can obtain the technology rigidity arrives (16) formula (established technology rigidity identification model):

$k_w=\frac{d_f(D_1-D_2)k_m}{D_1{D}_2(w_1-w_2)}---\left(14\right)$

$k_c=\frac{{\mathrm{rd}}_f(D_1-D_2)k_m{V}_s}{{\mathrm{rV}}_s{d}_f(D_2{w}_2-D_1{w}_1)+D_1{D}_2(w_1-w_2)({\mathrm{rV}}_s+V_w)}---\left(15\right)$

$k_s=\frac{{\mathrm{rd}}_f(D_1-D_2)k_m{V}_s}{D_1{D}_2(w_1-w_2)V_w}---\left(16\right)$

Result by the identification derivation of equation learns that the calculating of technology rigidity needs the actual grade that twice different in width ground.

The present invention only need carry out once grinding technology, wherein, in step S41, when described emery wheel grinds described workpiece along described first direction, just begun to cut the first lap lines that described workpiece forms described helical grinding lines, can form the flaring helical grinding lines of the grinding degree of depth of continuous wide variety at described surface of the work, and, in step S42, measure the described first width w of described flaring helical grinding lines ₁With the described second width w ₂, and measure with respect to the described first width w ₁With the described second width w ₂The described first grinding depth d of the described workpiece of position ₁With the described second grinding depth d ₂, cooperate above-mentioned (3) formula to arrive (16) formula again to (5) formula and (14) formula, can obtain technology rigidity and wear resistance ratio simultaneously.

In addition, after step S44, comprise in addition according to described workpiece grinding rigidity k _w, described wheel face contact rigidity k _cWith described emery wheel abrasion rigidity k _sThe step of the stability of regulation and control grinding technics promptly, is tried to achieve described workpiece in calculating and is ground rigidity k _w, described wheel face contact rigidity k _cWith described emery wheel abrasion rigidity k _sAfterwards, cooperate (1) formula and (2) formula and be depicted as nyquist diagram, it is required to judge according to this whether emery wheel meets, and guarantees to grind the stability of dynamic system, to solve the problem of grinding vibration.

The method of estimation of abrasion wheel grinding parameter of the present invention only need be carried out once grinding technology, surface geometry size after can grinding by measuring workpieces, identify workpiece and grind rigidity, wheel face contact rigidity and emery wheel abrasion rigidity, to understand the related process parameter that influences the process of lapping dynamic perfromance, and then solve the problem of grinding vibration, and be beneficial to and grind managerial personnel to judge whether emery wheel meets required.Whereby, the user can assess the stability of emery wheel quality, workpiece characteristic and grinding dynamic system easily.

The foregoing description is only in order to illustrate principle of the present invention and effect thereof, and unrestricted the present invention.Therefore the those skilled in the art makes amendment to the foregoing description under the situation that does not break away from spirit of the present invention and changes.Interest field of the present invention should be listed as appended claims.

Claims (16)

1. method of estimating abrasion wheel grinding parameter, it is in order to the abrasive parameters of the emery wheel of estimating grinder station, and wherein said grinder station has board and grinds quiet rigidity, said method comprising the steps of:

(a) always grind feeding along first direction according to setting, with described abrasion wheel grinding workpiece, and the surface at described workpiece forms the helical grinding lines, the circumference of wherein said emery wheel has the emery wheel linear speed, the circumference of described workpiece has the workpiece linear speed, described first direction is the direction from the head end of described workpiece to tail end, and the described helical grinding lines that is positioned at described head end has flaring helical grinding lines;

(b) measure first width and second width of described flaring helical grinding lines according to described first direction, and measure first grinding depth and second grinding depth with respect to the described workpiece of described first width and described second width position;

(c) according to described emery wheel be worn away volume and described workpiece be worn away the volume calculation wear resistance ratio; And

(d) according to described board grind quiet rigidity, feeding, described first width, described second width, described first grinding depth and described second grinding depth are always ground in described setting, calculate workpiece and grind rigidity, and according to described board grind quiet rigidity, feeding, described first width, described second width, described first grinding depth, described second grinding depth, described emery wheel linear speed and described workpiece linear speed are always ground in described setting, calculate wheel face contact rigidity and emery wheel abrasion rigidity.

2. method according to claim 1, wherein said board grinds quiet rigidity and records via the rigidity experiments of measuring.

3. method according to claim 1, wherein in step (a) according to the diameter and the described emery wheel linear speed of revolution speed calculating of circular constant, described emery wheel, and according to the diameter and the described workpiece linear speed of revolution speed calculating of circular constant, described workpiece.

4. method according to claim 1, wherein in step (a), described emery wheel moves along described first direction with relative moving speed, and being ground of wherein said surface of the work is partly not overlapping, makes the surface of described workpiece form described helical grinding lines.

5. method according to claim 1, wherein step (a) may further comprise the steps:

(a1) the described head end mark at described workpiece grinds initial point; And

(a2) from described grinding initial point along described first direction with the described workpiece of described abrasion wheel grinding, to form described helical grinding lines.

6. method according to claim 5 wherein comprises the step of repairing described emery wheel and described surface of the work before in addition in step (a1).

7. method according to claim 1, wherein step (b) may further comprise the steps:

(b1) from the side periphery of the described head end of described workpiece, measure described first width and described first grinding depth along described first direction;

(b2) described workpiece one angle of rotation; And

(b3) from the side periphery of the described head end of described workpiece, measure described second width and described second grinding depth along described first direction.

8. method according to claim 7 is wherein measured described first width and described first grinding depth and described second width and described second grinding depth in step (b1) with (b3) with distance measuring instrument.

9. method according to claim 8, wherein said distance measuring instrument are displacement meter.

10. method according to claim 8, the probe of wherein said distance measuring instrument is near the position that just begins to cut described workpiece.

11. method according to claim 7, wherein described workpiece 150 degree of rotation in step (b2).

12. method according to claim 1, wherein in step (c) according to before the width of described emery wheel and the described abrasion wheel grinding and the diameter after grinding calculate described emery wheel and be worn away volume, and calculate described workpiece according to the grinding depth of the diameter of described workpiece, described helical grinding lines and width and be worn away volume.

13. method according to claim 12 is wherein measured before the described abrasion wheel grinding and the diameter after grinding with the π tape.

14. method according to claim 12 is wherein measured the grinding depth of described helical grinding lines with displacement meter.

15. method according to claim 1, wherein comprise the step of setting up technology rigidity identification model before in addition, in step (d), utilize described technology rigidity identification model to calculate described workpiece and grind rigidity, described wheel face contact rigidity and described emery wheel abrasion rigidity in step (d).

16. method according to claim 1 wherein comprises the step of grinding the stability of rigidity, described wheel face contact rigidity and described emery wheel abrasion rigidity regulation and control grinding technics according to described workpiece afterwards in addition in step (d).

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