CN102620698A - Clamping error determination method of indexable insert based on N-point measurement - Google Patents

Abstract

The invention is a method for measuring the clamping error of an indexable blade based on the N-point method. The adjustment process is simple and flexible, and the clamping error in the up-down and front-back directions can be effectively measured. The steps are: first step: put the blade to be processed into the feeder and clamp it with a chuck; second step: make the blade a face up and in a horizontal state; third step: measure the distance d1 from the sensor to the a face; Step 4: Rotate the blade by 90° until the d-side is facing up and in a horizontal state; Step 5: Use the measuring sensor of the machine tool to measure the distance d2 from the sensor to the d-side; Step 6: Operate the CNC system to rotate the blade by 90° until face c faces up and is in a horizontal state; step 7: measure the distance d3 from the sensor to face c; step 8: operate the numerical control system to rotate the blade 90° until face b faces up and is in a horizontal state; step 9: Use the measuring sensor of the machine tool to measure the distance d4 from the sensor to the surface b; Step 10: Calculate the clamping error x, y of the blade in the horizontal and vertical directions.

Description

Indexable insert tip, throw away tip clamping error determine method based on the measurement of N point method

Technical field

The present invention relates to a kind of indexable insert tip, throw away tip clamping error determine method of measuring based on N point 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, have error between the actual clamping center of blade and the desirable clamping center, when the clamping error surpasses the grinding allowance of blade; The blade periphery can not complete grinding, thereby causes blade to be scrapped.

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.

Summary of the invention

The object of the invention provides a kind of indexable insert tip, throw away tip clamping error determine method of measuring based on N point method exactly for addressing the above problem.N is the limit number of polygon blade here, also is the measurement number of times in the blade clamping error determine process.This clamping error determine process simple and flexible, can effectively measure blade about clamping error on (Y direction) and front and back (directions X) direction.

For realizing above-mentioned purpose, the present invention adopts following technical scheme:

A kind of indexable insert tip, throw away tip clamping error determine method of measuring based on N point method, concrete steps are:

The first step: processed blade is put into loader and used the chuck clamping;

Second step: the operating numerical control system, make blade rotate to state 1, promptly a of blade faces up and is in horizontality;

The 3rd step: with survey sensor survey sensor to a face of lathe apart from d1;

The 4th step: the operating numerical control system, make blade half-twist to state 2, promptly the d of blade faces up and is in horizontality;

The 5th step: with survey sensor survey sensor to the d face of lathe apart from d2;

The 6th step: the operating numerical control system, make blade half-twist to state 3, promptly the c of blade faces up and is in horizontality;

The 7th step: with survey sensor survey sensor to the c face of lathe apart from d3.

The 8th step: the operating numerical control system, make blade half-twist to state 4, promptly the b of blade faces up and is in horizontality.

The 9th step: with survey sensor survey sensor to the b face of lathe apart from d4;

The tenth step: calculate blade clamping error x in the horizontal and vertical directions, y;

Wherein, the computing method of deviation y

If the length of side of square blade is L, actual clamping center O 1 is y with theoretical clamping center O side-play amount in vertical direction, has relation as follows:

$d1+y+\frac{L}{2}=d3-y+\frac{L}{2}$

$y=\frac{d3-d1}{2}$

Y＞0 o'clock, actual clamping center O 1 is squinted to the c limit by the O point; Y＜0 o'clock; Actual clamping center O 1 is squinted to a limit by the O point, offset distance

The computing method of deviation x

$d2+x+\frac{L}{2}=d4-x+\frac{L}{2}$

$x=\frac{d4-d2}{2}$

X＞0 o'clock; Actual clamping center O 1 is squinted to the d limit by the O point; X＜0 o'clock; To the skew of b limit, offset distance is

to actual clamping center O 1 by the O point

In said second step, O1 is actual clamping center, and O is theoretical clamping center, and the purpose of clamping error determine is to obtain actual clamping center O 1 and theoretical clamping center O clamping deviation x and deviation y in vertical direction in the horizontal direction.

Ultimate principle of the present invention is: at blade after clamping finishes on peripheral grinding machine; By the relevant coordinate axis motion of digital control system instruction; Make blade do before and after rectilinear motion and/or rotatablely move; Obtain the measurement data of blade diverse location during this time with survey sensor, the measurement data that obtains handled by corresponding algorithm, thus obtain blade about clamping error on (Y direction) and front and back (directions X) direction.

The invention has the beneficial effects as follows: measure the clamping error in the blade first being processed through measuring method, can (1) quantitative basis be provided for the adjustment of chuck; (2) avoid because of the blade that the clamping error causes is too greatly scrapped, the emery wheel collision; (1) foundation is provided for the automatic compensation of clamping error.

Description of drawings

Fig. 1 is the view of blade state 1;

Fig. 2 is the view of blade state 2;

Fig. 3 is the view of blade state 3;

Fig. 4 is the view of blade state 4;

Fig. 5 is a process flow diagram of the present invention.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Among Fig. 5, be that example provides clamping error determine method and step with the square blade:

The first step: processed blade is put into loader and used the chuck clamping.

Second step: the operating numerical control system makes blade rotate to state 1 (a of blade faces up and is in horizontality), like Fig. 1.(O1 is actual clamping center among the figure, and O is theoretical clamping center, and the purpose of clamping error determine is to obtain actual clamping center O 1 and theoretical clamping center O clamping deviation x and deviation y in vertical direction in the horizontal direction)

The 3rd step: with survey sensor survey sensor to a face of lathe apart from d1.

The 4th step: the operating numerical control system makes blade half-twist to state 2 (d of blade faces up and is in horizontality), like Fig. 2.

The 5th step: with survey sensor survey sensor to the d face of lathe apart from d2.

The 6th step: the operating numerical control system makes blade half-twist to state 3 (c of blade faces up and is in horizontality), like Fig. 3.

The 7th step: with survey sensor survey sensor to the c face of lathe apart from d3.

The 8th step: the operating numerical control system makes blade half-twist to state 4 (b of blade faces up and is in horizontality), like Fig. 4.

The 9th step: with survey sensor survey sensor to the b face of lathe apart from d4.

The tenth step: calculate blade clamping error x in the horizontal and vertical directions, y.

1. the computing method of deviation y

If the length of side of square blade is L, actual clamping center O 1 is y with theoretical clamping center O side-play amount in vertical direction, has relation as follows:

$d1+y+\frac{L}{2}=d3-y+\frac{L}{2}$

$y=\frac{d3-d1}{2}$

Y＞0 o'clock, actual clamping center O 1 is squinted to the c limit by the O point; Y＜0 o'clock; To the skew of a limit, offset distance is

to actual clamping center O 1 by the O point

2. the computing method of deviation x

$d2+x+\frac{L}{2}=d4-x+\frac{L}{2}$

$x=\frac{d4-d2}{2}$

X＞0 o'clock; Actual clamping center O 1 is squinted to the d limit by the O point; X＜0 o'clock; To the skew of b limit, offset distance is to actual clamping center O 1 by the O point

Claims (2)

1. A method for determining the clamping error of an indexable blade based on the N-point method, characterized in that the specific steps are: The first step: Put the blade to be processed into the loader and clamp it with the chuck; Step 2: Operate the numerical control system to rotate the blade to state 1, that is, the a side of the blade faces upward and is in a horizontal state; The third step: use the measuring sensor of the machine tool to measure the distance d1 from the sensor to the surface a; Step 4: Operate the numerical control system to rotate the blade 90° to state 2, that is, the d side of the blade faces upward and is in a horizontal state; Step 5: Use the measuring sensor of the machine tool to measure the distance d2 from the sensor to the d surface; Step 6: Operate the CNC system to rotate the blade 90° to state 3, that is, the c side of the blade faces upward and is in a horizontal state; Step 7: Use the measuring sensor of the machine tool to measure the distance d3 from the sensor to the c-plane. Step 8: Operate the CNC system to rotate the blade 90° to state 4, that is, the b side of the blade faces upward and is in a horizontal state. Step 9: Use the measuring sensor of the machine tool to measure the distance d4 from the sensor to the surface b; Step 10: Calculate the clamping error x, y of the blade in the horizontal and vertical directions; Among them, the calculation method of deviation y Assuming that the side length of the square blade is L, the offset between the actual clamping center O1 and the theoretical clamping center O in the vertical direction is y, and there is the following relationship: $\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; L</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; L</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}$ $\mathrm{<span\; class="notranslate">\; the\; y</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}$ When y>0, the actual clamping center O1 shifts from point O to side c; when y<0, the actual clamping center O1 shifts from point O to side a, and the offset distance is

Calculation method of deviation x $\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; L</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; +</span>\frac{\mathrm{<span\; class="notranslate">\; L</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}$ $\mathrm{<span\; class="notranslate">\; x</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; d</span>}\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}$ When x>0, the actual clamping center O1 shifts from point O to side d, when x<0, the actual clamping center O1 shifts from point O to side b, and the offset distance is

2. The method for measuring the clamping error of the indexable blade based on the N-point method as claimed in claim 1, is characterized in that, in the second step, O1 is the actual clamping center, O is the theoretical clamping center, The purpose of clamping error measurement is to obtain the clamping deviation x in the horizontal direction and the deviation y in the vertical direction between the actual clamping center O1 and the theoretical clamping center O.

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