CN105157634A

CN105157634A - Metal product reference correction measurement method

Info

Publication number: CN105157634A
Application number: CN201510278534.5A
Authority: CN
Inventors: 朱瑞华; 陆俊京
Original assignee: WUXI TAERJI HEAT EXCHANGER TECHNOLOGY Co Ltd
Current assignee: WUXI TAERJI HEAT EXCHANGER TECHNOLOGY Co Ltd
Priority date: 2015-05-28
Filing date: 2015-05-28
Publication date: 2015-12-16

Abstract

The invention provides a metal product reference correction measurement method, comprising a first step of selecting a measurement surface I as an XY first reference surface; a second step of selecting a measurement circle I and a measurement circle II on the reference surface for measurement, and selecting an original point; a third step of establishing a coordinate system; a fourth step of enabling the coordinate system obtained in the third step to rotate 0-180 degrees around a Z axis; a fifth step of selecting a measurement circle III and a measurement circle IV on a second reference surface for measurement; a sixth step of performing correction calculation that A=atn (0-PT[2].X)/PT[2].Z; B=atn (0-PT[2].Y)/PT[2].Z; and a seventh step of rotating the coordinate system according to the calculated result in the sixth steps, enabling the coordinate system to rotate a rotation angle A around a Y axis and a rotation angle B around an X axis. When the metal product reference correction measurement method is used for correction, a corresponding reduction in reference errors can be achieved, and actual assembly situations are better met.

Description

A kind of metallic article benchmark correction measuring method

Technical field

The present invention relates to heating radiator fields of measurement, particularly relate to a kind of metallic article benchmark correction measuring method.

Background technology

We are used in the EGR thermal cycle heating radiator in motor car engine, and when practical set, iff there being the first benchmark, as long as benchmark measures a little error, so other key element measurement errors also can correspondingly amplify.

Summary of the invention

Only adopt the problem that the first benchmark time error is large when being directed to existing thermal cycle heating radiator practical set, the present invention adopts the second benchmark to carry out correction to reduce fiducial error.In order to achieve the above object, the present invention by the following technical solutions: the invention provides a kind of metallic article benchmark correction measuring method, described second benchmark correction step comprises: step one: select measuring surface I as XY first reference field; Step 2: reference field is selected measure circle I and measure circle II to measure, choose initial point; Step 3: set up coordinate system; Step 4: the coordinate system obtained in step 3 is rotated 0-180 ° around Z axis; Step 5: the measurement circle III on the second reference field and measurement circle IV are measured; Step 6: correction calculates, A=atn (0-PT [2] .X)/PT [2] .Z;

B=atn (0-PT [2] .Y)/PT [2] .Z, described PT [2] .X measures circle II subpoint coordinate figure in the X direction, described PT [2] .Z measures circle II subpoint coordinate figure in z-direction, and described PT [2] .Y measures circle II subpoint coordinate figure in the Y direction.; Step 7: according to the result of calculation rotating coordinate system of step 6 gained, around Y-axis, coordinate system is rotated A angle, around X-axis, coordinate system is rotated B angle.

Preferably, in described step 2, initial point is the center of circle of measurement circle I or the mid point of measurement circle I and measurement circle II distance of center circle.

Preferably, choose measurement circle I in described step 4 and measure circle II circle center line connecting as axis.

Preferably, described axis rotates to parallel with X-axis or overlapping around Z axis.

Preferably, select in described step 5 to measure circle III and measure circle IV distance of center circle mid point as secondary initial point.

Beneficial effect of the present invention: the present invention is by carrying out correction, mutually deserved minimizing fiducial error, more realistic assembling situation by a kind of metallic article benchmark correction measuring method.

Accompanying drawing explanation

Fig. 1 is a kind of case study on implementation of the present invention;

Fig. 2 is a kind of case study on implementation of the first benchmaring in the present invention;

Fig. 3 is a kind of case study on implementation of the second benchmaring correction of the present invention.

In figure, 1, measuring surface I, 11, inclined-plane circle I, 12, inclined-plane circle II; 2, measuring surface II, 21, inclined-plane circle III, 22, inclined-plane circle IV.

Embodiment

The invention provides a kind of metallic article benchmark correction measuring method, step comprises: step one: select measuring surface I as XY first reference field; Step 2: reference field is selected measure circle I and measure circle II to measure, choose initial point; Step 3: set up coordinate system; Step 4: the coordinate system obtained in step 3 is rotated 0-180 ° around Z axis; Step 5: the measurement circle III on the second reference field and measurement circle IV are measured; Step 6: correction calculates, A=atn (0-PT [2] .X)/PT [2] .Z;

According to a kind of case study on implementation shown in Fig. 1 to Fig. 3, when carrying out the second benchmark correction, specifically adopt following steps:

1. measuring surface I 1, is set to XY first reference field;

2. measure inclined-plane circle I 11, inclined-plane circle II 12, gets its center of circle mid point as initial point;

3. initial point connects circle I 1 centers of circle as axle, around Z axis, coordinate system is turned 35 °, sets up coordinate system;

4. measuring surface II, inclined-plane circle III 21, inclined-plane circle IV 22, asks two circle mid points, as secondary initial point;

Carry out following correction calculating, then rotating coordinate system;

A=atn(0-PT[2].X)/PT[2].Z

B=atn(0-PT[2].Y)/PT[2].Z

Rotate A angle around Y-axis during rotation, rotate B angle around X-axis.

5. correction terminates, and now can measure other each key elements.

Claims

1. a metallic article benchmark correction measuring method, is characterized in that, comprising: step one: select measuring surface I conduct

XY first reference field; Step 2: reference field is selected measure circle I and measure circle II to measure, choose initial point; Step 3: set up coordinate system; Step 4: the coordinate system obtained in step 3 is rotated 0-180 ° around Z axis; Step 5: the measurement circle III on the second reference field and measurement circle IV are measured; Step 6: correction calculates,

A=atn(0-PT[2].X)/PT[2].Z；

B=atn(0-PT[2].Y)/PT[2].Z；

Step 7: according to the result of calculation rotating coordinate system of step 6 gained, around Y-axis, coordinate system is rotated A angle, around X-axis, coordinate system is rotated B angle.

2. a kind of metallic article benchmark correction measuring method according to claim 1, is characterized in that: in described step 2, initial point is the center of circle of measurement circle I or the mid point of measurement circle I and measurement circle II distance of center circle.

3. a kind of metallic article benchmark correction measuring method according to claim 1, is characterized in that: choose in described step 4 and measure circle I and measure circle II circle center line connecting as axis.

4. a kind of metallic article benchmark correction measuring method according to claim 3, is characterized in that: described axis rotates to parallel with X-axis or overlapping around Z axis.

5. a kind of metallic article benchmark correction measuring method according to claim 1, is characterized in that: select in described step 5 to measure circle III and measure circle IV distance of center circle mid point as secondary initial point.