CN101650151A - Roller way diameter measuring method of high-precise no-limit two-sided roller way slewing bearing - Google Patents

Abstract

The invention discloses a roller way diameter measuring method of a high-precise no-limit two-sided roller way slewing bearing; the method adopts a plurality of measuring units with same structure anda device for measuring the distance of balls, wherein, each measuring unit comprises a body, two locating ball bodies or partial ball bodies, which are respectively arranged at two ends of the body,and a plurality of fixing mechanisms, which contain permanent magnets and are arranged above the body. The operation steps of measurement are that: a plurality of the measuring units are arranged by sequential connection and are fixed on the roller way to be measured; the method is characterized in that: the locating ball bodies or partial ball bodies of the adjacent measuring units are tangent, and the locating ball body or partial ball body on each measuring unit is tangent with two sides of the roller way to be measured; then, the device for measuring the distance of balls is adopted to measure the distance of the locating ball bodies or partial ball bodies on the first and the last measuring units, and according to geometric relationship, the diameter of the roller way to be measured is obtained.

Description

Roller way diameter measuring method of high-precise no-limit two-sided roller way slewing bearing

Technical field

The invention provides the raceway diameter measuring method of the pivoting support that is used to have two-sided raceway, belong to the technical field of linear measure longimetry.Here so-called two-sided raceway is meant that it has two surfaces to contact with the rolling body working surface, as V-arrangement raceway in the crossed roller bearing and the peach shape raceway in the four-point contact ball, but not single surface contacts with the rolling body working surface, as the arcuate groove in the cylindrical raceway in the cylinder roller bearing and zanjon ball or the angular contact ball bearing.

Technical background

The high-acruracy survey of raceway diameter has great importance for the pivoting support precision, and method commonly used at present is to adopt a kind of so-called sounding rod to measure.This sounding rod is made up of a measuring staff and two measuring jaws that lay respectively at the measuring staff end.The steel ball that all has identical and numerical value of diameter and tested raceway to adapt on each measuring jaw, one of them steel ball is fixed, and another steel ball can move along the measuring staff direction, and institute's displacement is recorded by a dial gauge or clock gauge.Adopt a standard set-up (or standardized element, large-scale vernier caliper etc.) of forming by bridge chi and gauge block to demarcate zero-bit, measure tested raceway and promptly can draw tested raceway diameter with respect to the deviate of this zero-bit.The problem that this method exists is that the size and the weight of measurement mechanism and standard set-up increase synchronously along with tested raceway diameter increases, and causes the device distortion to increase, and operation is difficulty more, and precision is difficult to guarantee.

Summary of the invention

At the problem that existing measuring method exists, the present invention for the pivoting support with two-sided raceway provide high precision, easy to operate, do not have a raceway diameter measuring method of measuring the upper limit.This method adopts the identical measuring unit of some structures and a device of measuring distance between ball and the ball to measure, wherein each measuring unit all comprises a body, two location spheroid or part spheroids that lay respectively at the body two ends, and some fixed mechanisms that includes permanent magnet that is positioned on the body.

The operation steps of measuring is: as shown in Figure 1, a series of measuring units are joined successively put and be fixed on the tested raceway by fixed mechanism, to the last one put and fixing measuring unit is put with first and fixing measuring unit adjacent positioned spheroid or the distance between the part spheroid within the measurement range of the device of distance between measurement ball and the ball.Last measuring unit of putting and fixing and first measuring unit adjacent positioned spheroid of putting and fixing or the distance between the part spheroid are the gaps between these two adjacent positioned spheroids or the part spheroid herein, or the centre of sphere distance between them, or the distance on other certain certain sense.In above-mentioned process of putting measuring unit, need make location spheroid or part spheroid on the measuring unit that joins tangent, and make location spheroid on each measuring unit or part spheroid and tested raceway bilateral tangent, for example, the contact situation of raceway in outer raceway of V-arrangement or the peach shape shown in Figure 3 as shown in Figure 2.At last, adopt the device of measuring distance between ball and the ball to measure this distance, and, according to this distance, tested raceway geometric configuration and parameter, and on each measuring unit of putting location spheroid or part spheroid by its position of putting on the tested raceway formed each other geometric relationship and and tested raceway between geometric relationship, obtain tested raceway diameter.

For example: as shown in Figure 2, for outer raceway diameter measurement, when when being asked the raceway diameter to be handed over diameter of a circle D by the two-sided elongated surfaces of V-arrangement raceway, there is following geometric relationship by the V-arrangement raceway of symmetry and supposition in tested raceway:

${\mathrm{\Σ}}_{i=1}^N{\mathrm{\α}}_i+{\mathrm{\Σ}}_{i=1}^{N-1}{\mathrm{\β}}_i+\mathrm{\γ}=2\mathrm{\π}---\left(1\right)$

${\mathrm{\&alpha;}}_i=\arccos \frac{{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d1}_i}{2\sin \mathrm{\&alpha;}})}^2+{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d2}_i}{2\sin \mathrm{\&alpha;}})}^2-l_i^2}{2(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d1}_i}{2\sin \mathrm{\&alpha;}})(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d2}_i}{2\sin \mathrm{\&alpha;}})},i=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,N---\left(2\right)$

${\mathrm{\&beta;}}_i=\arccos \frac{{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{d{1}_i}{2\sin \mathrm{\&alpha;}})}^2+{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d2}_{i+1}}{2\sin \mathrm{\&alpha;}})}^2-{(\frac{{d1}_i}{2}+\frac{{d2}_{i+1}}{2})}^2}{2(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{d{1}_i}{2\sin \mathrm{\&alpha;}})(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d2}_{i+1}}{2\sin \mathrm{\&alpha;}})},i=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,N-1---\left(3\right)$

$\mathrm{\&gamma;}=\arccos \frac{{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}1}_1}{2\sin \mathrm{\&alpha;}})}^2+{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d2}_{\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">N</figure-callout>}}}{2\sin \mathrm{\&alpha;}})}^2-{(l_o+\frac{{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}1}_1}{2}+\frac{{d2}_N}{2})}^2}{2(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}{1}_1}{2\sin \mathrm{\&alpha;}})(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\frac{{d2}_{\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">N</figure-callout>}}}{2\sin \mathrm{\&alpha;}})}---\left(4\right)$

Wherein, α _iBe on the measuring unit put of i two location spheroids or the part spheroid centre of sphere with respect to the angle between the tested raceway center of circle, β _iBe to locate spheroid or the part spheroid centre of sphere on the measuring unit put of i on location spheroid or the part spheroid centre of sphere and i+1 the measuring unit of putting with respect to the angle between the tested raceway center of circle, γ locatees spheroid or the part spheroid centre of sphere with respect to the angle between the tested raceway center of circle on location spheroid or the part spheroid centre of sphere and the measuring unit that last is put on adjacent first measuring unit of putting, α is a V-arrangement raceway dihedral angle half, d1 _iBe the diameter of i measuring unit afterbody location spheroid or part spheroid, d2 _iBe the diameter of i measuring unit stem location spheroid or part spheroid, l _iBe the centre of sphere distance between i measuring unit two location spheroids or the part spheroid, N is the quantity of used measuring unit, l _oFor first measuring unit afterbody location spheroid or part spheroid and N measuring unit stem are located gap between spheroid or the part spheroid, be aforementioned what is called last put and measuring unit adjacent positioned spheroid that fixing measuring unit is put with first and fixed or part spheroid between a kind of apart from it, it will be intended to definite geometric relationship formula about γ, is equation (4) herein.Solving equation (1)-(4) can obtain tested raceway diameter D.

Again for example: as shown in Figure 3, for interior raceway diameter measurement, to be asked the raceway diameter be raceway circular arc center of circle O by the peach shape raceway of symmetry and supposition when tested raceway _gLocus circle diameter D the time, have following geometric relationship:

${\mathrm{\&Sigma;}}_{i=1}^N{\mathrm{\&alpha;}}_i+{\mathrm{\&Sigma;}}_{i=1}^{N-1}{\mathrm{\&beta;}}_i+\mathrm{\&gamma;}=2\mathrm{\&pi;}---\left(5\right)$

${\mathrm{\&alpha;}}_i=\arccos \frac{{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d1}_i}{2})}^2-e^2})}^2+{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d2}_i}{2})}^2-e^2})}^2-l_i^2}{2(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d1}_i}{2})}^2-e^2})(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d2}_i}{2})}^2-e^2})},$

i＝1，2，...，N (6)

${\mathrm{\&beta;}}_i=\arccos \frac{{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d1}_i}{2})}^2-e^2})}^2+{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d2}_{i+1}}{2})}^2-e^2})}^2-{(\frac{{d1}_i}{2}+\frac{{d2}_{i+1}}{2})}^2}{2(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d1}_i}{2})}^2-e^2})(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d2}_{i+1}}{2})}^2-e^2})}$

i＝1，2，...，N-1 (7)

$\mathrm{\&gamma;}=\arccos \frac{{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}1}_1}{2})}^2-e^2})}^2+{(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d2}_N}{2})}^2-e^2})}^2-{(l_o+\frac{{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}1}_1}{2}+\frac{{d2}_N}{2})}^2}{2(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}1}_1}{2})}^2-e^2})(\frac{\mathrm{<figure-callout\; id="2"\; label="D"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">D</figure-callout>}}{2}+\sqrt{{(r-\frac{{d2}_N}{2})}^2-e^2})}$

(8)

Wherein, α _iBe on the measuring unit put of i two location spheroids or the part spheroid centre of sphere with respect to the angle between the tested raceway center of circle, β _iBe to locate spheroid or the part spheroid centre of sphere on the measuring unit put of i on location spheroid or the part spheroid centre of sphere and i+1 the measuring unit of putting with respect to the angle between the tested raceway center of circle, γ locatees spheroid or the part spheroid centre of sphere with respect to the angle between the tested raceway center of circle on location spheroid or the part spheroid centre of sphere and the measuring unit that last is put on adjacent first measuring unit of putting, r is a peach shape raceway arc radius, e is a peach shape raceway circular arc center of circle offset distance, d1 _iBe the diameter of i measuring unit afterbody location spheroid or part spheroid, d2 _iBe the diameter of i measuring unit stem location spheroid or part spheroid, l _iBe the centre of sphere distance between i measuring unit two location spheroids or the part spheroid, N is the quantity of used measuring unit, l _oFor first measuring unit afterbody location spheroid or part spheroid and N measuring unit stem are located gap between spheroid or the part spheroid.Solving equation (5)-(8) can obtain the tested raceway diameter D that asks.

Obviously, as long as the measuring unit of sufficient amount is arranged, big raceway diameter can be measured arbitrarily.But along with continuing to increase of tested raceway diameter, needed measuring unit quantity also can be on the increase.For reducing measuring unit quantity, reduce cost, can adopt not alternately to put and realize measuring with the measuring unit of the fixed qty of tested raceway vary in diameter, just outer raceway is slightly different with interior raceway diameter measuring method.For outer raceway diameter measurement, the operation steps of measurement is: as shown in Figure 1, at first, the measuring unit of these fixed qties is divided into an initial measurement unit, quantity is made as some circulation measuring units and some motor-driven measuring unit three classes of n.The equal in length of recommending respectively to circulate measuring unit, and being uneven in length of each motor-driven measuring unit, and be respectively 1/2,1/4 and 1/8 or the like of circulation measuring unit length.Then, the initial measurement unit is put and be fixed on the tested raceway by fixed mechanism.After the initial measurement unit, the circulation measuring unit joined successively put and be fixed on the tested raceway by fixed mechanism.According to putting order these circulation measuring units are called the 1st circulation measuring unit, the 2nd circulation measuring unit ..., until n circulation measuring unit.Then, taking out the 1st circulation measuring unit puts and is fixed on after n the circulation measuring unit, taking out the 2nd circulation measuring unit again puts and is fixed on after the 1st the circulation measuring unit, by that analogy, alternately put and fix this n circulation measuring unit, measuring within the measurement range of the device of distance between ball and the ball up to the distance of adjacent positioned spheroid or part spheroid between one of them circulation measuring unit and the initial measurement unit.If the distance that can not realize adjacent positioned spheroid between one of them circulation measuring unit and the initial measurement unit or part spheroid is within the measurement range of measuring the device of distance between ball and the ball, put successively after the circulation measuring unit of then in the end putting and fixing motor-driven measuring unit, the distance of adjacent positioned spheroid or part spheroid is within the measurement range of measuring the device of distance between ball and the ball between motor-driven measuring unit of to the last putting and fixing and the initial measurement unit.In above-mentioned process of putting measuring unit, need make location spheroid or part spheroid on the measuring unit that joins tangent, and make location spheroid on each measuring unit or part spheroid and tested raceway bilateral tangent.At last, adopt the device of measuring distance between ball and the ball to measure this distance, and, according to this distance, tested raceway geometric configuration and parameter, and on each measuring unit of putting location spheroid or part spheroid by its position of putting on the tested raceway formed each other geometric relationship and and tested raceway between geometric relationship, obtain tested raceway diameter.

For interior raceway diameter measurement, except the identical measuring unit of aforementioned structure with measure the device of distance between ball and the ball, also need auxiliary realization of a parallel block to measure, this parallel block have two planes that are parallel to each other and.The operation steps of measuring is: as shown in Figure 4, at first, the measuring unit of these fixed qties is divided into an initial measurement unit, quantity is made as some circulation measuring units and some motor-driven measuring unit three classes of n.The equal in length of recommending respectively to circulate measuring unit, and being uneven in length of each motor-driven measuring unit, and be respectively 1/2,1/4 and 1/8 or the like of circulation measuring unit length.Then, the initial measurement unit is put and be fixed on the tested raceway by fixed mechanism.After the initial measurement unit, the circulation measuring unit joined successively put and be fixed on the tested raceway by fixed mechanism, and, between initial measurement unit and adjacent with it circulation measuring unit, insert parallel block, make two parallel planes of parallel block and tangent with adjacent initial measurement unit and the location spheroid on the circulation measuring unit or part spheroid respectively.According to putting order these circulation measuring units are called the 1st circulation measuring unit, the 2nd circulation measuring unit ..., until n circulation measuring unit; Then, at first take out parallel block, taking out the 1st circulation measuring unit again puts and is fixed on after n the circulation measuring unit, taking out the 2nd circulation measuring unit again puts and is fixed on after the 1st the circulation measuring unit, by that analogy, alternately put and fix this n circulation measuring unit, measuring within the measurement range of the device of distance between ball and the ball up to the distance of adjacent positioned spheroid or part spheroid between one of them circulation measuring unit and the initial measurement unit.If the distance that can not realize adjacent positioned spheroid between one of them circulation measuring unit and the initial measurement unit or part spheroid is within the measurement range of measuring the device of distance between ball and the ball, put successively after the circulation measuring unit of then in the end putting and fixing and fixing motor-driven measuring unit, the distance of adjacent positioned spheroid or part spheroid is within the measurement range of measuring the device of distance between ball and the ball between motor-driven measuring unit of to the last putting and fixing and the initial measurement unit.In above-mentioned process of putting measuring unit, need make location spheroid or part spheroid on the measuring unit that joins tangent, and make location spheroid on each measuring unit or part spheroid and tested raceway bilateral tangent.At last, adopt the device of measuring distance between ball and the ball to measure this distance, and, according to this distance, tested raceway geometric configuration and parameter, and on each measuring unit of putting on location spheroid or part spheroid and the parallel block parallel plane and by its position of putting on the tested raceway formed each other geometric relationship and and tested raceway between geometric relationship, obtain tested raceway diameter.

Why interior raceway diameter measurement needs a parallel block to be, and the 1st circulation measuring unit can not take out under the prerequisite that does not change other measuring unit position because be far from it then, and had after the parallel block, just can take out parallel block earlier, take out the 1st circulation measuring unit again and can not influence the position of other measuring unit.

Adopt the method for alternately putting measuring unit 1, if do not distinguish initial measurement unit, circulation measuring unit and motor-driven measuring unit, and the circulation measuring unit that all repeat to put is considered as different measuring units, only size is identical just, then for outer raceway diameter measurement, formed all measuring units of putting each other, and with tested raceway between geometric relationship with described non-method of alternately putting measuring unit is identical before; And for interior raceway diameter measurement, then slightly different owing to the use of parallel block.As shown in Figure 4 and Figure 5, the V-arrangement raceway that is symmetry with tested interior raceway is an example, supposes when the raceway diameter of asking is handed over diameter of a circle D by the two-sided elongated surfaces of V-arrangement raceway, has following geometric relationship:

${\mathrm{\&Sigma;}}_{i=1}^N{\mathrm{\&alpha;}}_i+{\mathrm{\&Sigma;}}_{i=1}^{N-1}{\mathrm{\&beta;}}_i+\mathrm{\&gamma;}=2\mathrm{\&pi;}---\left(9\right)$

${\mathrm{\&alpha;}}_i=\arccos \frac{{(\frac{D}{2}-\frac{{d1}_i}{2\sin \mathrm{\&alpha;}})}^2+{(\frac{D}{2}-\frac{{d2}_i}{2\sin \mathrm{\&alpha;}})}^2-l_i^2}{2(\frac{D}{2}-\frac{{d1}_i}{2\sin \mathrm{\&alpha;}})(\frac{D}{2}-\frac{{d2}_i}{2\sin \mathrm{\&alpha;}})},i=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,N---\left(10\right)$

${\mathrm{\&beta;}}_1=\arccos \frac{{(\frac{D}{2}-\frac{d{1}_i}{2\sin \mathrm{\&alpha;}})}^2+{(\frac{D}{2}-\frac{{d2}_{i+1}}{2\sin \mathrm{\&alpha;}})}^2-{(\frac{{d1}_i}{2}+\frac{{d2}_{i+1}}{2}+h)}^2}{2(\frac{D}{2}-\frac{d{1}_i}{2\sin \mathrm{\&alpha;}})(\frac{D}{2}-\frac{{d2}_{i+1}}{2\sin \mathrm{\&alpha;}})}---\left(11\right)$

${\mathrm{\&beta;}}_i=\arccos \frac{{(\frac{D}{2}-\frac{d{1}_i}{2\sin \mathrm{\&alpha;}})}^2+{(\frac{D}{2}-\frac{{d2}_{i+1}}{2\sin \mathrm{\&alpha;}})}^2-{(\frac{{d1}_i}{2}+\frac{{d2}_{i+1}}{2})}^2}{2(\frac{D}{2}-\frac{d{1}_i}{2\sin \mathrm{\&alpha;}})(\frac{D}{2}-\frac{{d2}_{i+1}}{2\sin \mathrm{\&alpha;}})},i=\mathrm{1,2},\&CenterDot;\&CenterDot;\&CenterDot;,N-1---\left(12\right)$

$\mathrm{\&gamma;}=\arccos \frac{{(\frac{D}{2}-\frac{{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}1}_1}{2\sin \mathrm{\&alpha;}})}^2+{(\frac{D}{2}-\frac{{d2}_{\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">N</figure-callout>}}}{2\sin \mathrm{\&alpha;}})}^2-{(l_o+\frac{{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}1}_1}{2}+\frac{{d2}_N}{2})}^2}{2(\frac{D}{2}-\frac{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="A2009100352220016H1.png,A2009100352220016H3.png"\; state="\{\{state\}\}">d</figure-callout>}{1}_1}{2\sin \mathrm{\&alpha;}})(\frac{D}{2}-\frac{{d2}_{\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="A2009100352220018H3.png"\; state="\{\{state\}\}">N</figure-callout>}}}{2\sin \mathrm{\&alpha;}})}$

(13)

Wherein, α _iBe on the measuring unit put of i two location spheroids or the part spheroid centre of sphere with respect to the angle between the tested raceway center of circle, β _iBe to locate spheroid or the part spheroid centre of sphere on the measuring unit put of i on location spheroid or the part spheroid centre of sphere and i+1 the measuring unit of putting with respect to the angle between the tested raceway center of circle, γ locatees spheroid or the part spheroid centre of sphere with respect to the angle between the tested raceway center of circle on location spheroid or the part spheroid centre of sphere and the measuring unit that last is put on adjacent first measuring unit of putting, α is a V-arrangement raceway dihedral angle half, d1 _iBe the diameter of i measuring unit afterbody location spheroid or part spheroid, d2 _iBe the diameter of i measuring unit stem location spheroid or part spheroid, l _iBe the centre of sphere distance between i measuring unit two location spheroids or the part spheroid, h be parallel block two parallel planes and between distance, N is the quantity of used measuring unit, l _oBe the 1st measuring unit afterbody location spheroid or part spheroid and N measuring unit stem located gap between spheroid or the part spheroid.Need explanation, do not distinguish initial measurement unit, circulation measuring unit and motor-driven measuring unit here when measuring unit being counted, and regard the circulation measuring unit that all repeat to put as only measure-alike different measuring unit.Solving equation (9)-(13) can obtain tested raceway diameter D.

Because the limited length of each measuring unit, the distance between first and last measuring unit is fully little, so measuring unit and to measure the installation weight of distance between ball and the ball limited is convenient to operation.Again because locate the diameter of spheroid or part spheroid on each measuring unit, and two centre of sphere distances of locating between spheroid or the part spheroid can both adopt existing general fine measuring instrument accurately to demarcate at an easy rate on each measuring unit, each measuring unit is put successively in addition, its error in length cancels each other out (equalization), and the present invention can accurately measure two-sided raceway rotary support raceway diameter.Add and to measure big raceway diameter arbitrarily, so with respect to existing rotary support raceway diameter measuring method with two-sided raceway, the present invention has significant advantage.

Description of drawings

Fig. 1 is a raceway diameter principle schematic of measuring the pivoting support with two-sided raceway, and wherein the device of distance is not drawn between fixed mechanism and measurement ball and the ball;

Fig. 2 is that location spheroid or part spheroid contact synoptic diagram with the V-arrangement raceway when measuring the outer raceway diameter of V-arrangement;

Fig. 3 is that location spheroid or part spheroid contact synoptic diagram with peach shape raceway when measuring in the peach shape raceway diameter;

Fig. 4 adopts the method measurement of alternately putting measuring unit to have the interior raceway diameter principle schematic of the pivoting support of two-sided raceway, and wherein the device of distance is not drawn between fixed mechanism and measurement ball and the ball;

Fig. 5 is that location spheroid or part spheroid contact synoptic diagram with the V-arrangement raceway when measuring in the V-arrangement raceway diameter;

Measuring unit structure front elevation when Fig. 6 is the outer raceway of examples measure;

Fig. 7 is Fig. 6 measuring unit vertical view;

Fig. 8 is that Fig. 6 measuring unit A-A face amplifies rotation profile and tested raceway cut-open view at 2: 1;

Fig. 9 is that Fig. 6 measuring unit B-B face amplifies rotation profile and tested raceway cut-open view at 2: 1;

Figure 10 is measuring unit structure front elevation during raceway in the examples measure;

Figure 11 is that Figure 10 measuring unit A-A face amplifies rotation profile and tested raceway cut-open view at 2: 1;

Figure 12 is that Figure 10 measuring unit B-B face amplifies rotation profile and tested raceway cut-open view at 2: 1;

Among the figure: the tested raceway of 0-; The 1-measuring unit; The 11-body; 12-location spheroid or part spheroid; The 13-fixed mechanism; 14-auxiliary positioning mechanism; The 131-permanent magnet; The 132-screw; The 133-knob; The 134-screw rod; 1311-permanent magnet 131 and the right surface of tested roller surface; The cylinder of 1321-screw 132 front portions; The 1341-keyway; The 3-parallel block; 31, two planes that are parallel to each other on the 32-parallel block 3; 111-initial measurement unit; 112-circulation measuring unit; The motor-driven measuring unit of 113-.

Embodiment

As Fig. 6, Fig. 7 and shown in Figure 10, be used to have the rotary support raceway diameter measuring method embodiment of two-sided raceway, this method adopts the identical measuring unit of some structures 1 and a common micrometer inside caliper 2 of measuring gap between ball and the ball to measure, wherein each measuring unit 1 all comprises a body 11, two location spheroid or part spheroids 12 that lay respectively at body 11 two ends, and some fixed mechanisms that includes permanent magnet 131 13 that is positioned on the body 11.In addition, 4 auxiliary positioning mechanisms 14 are connected with body 11 and are positioned at body 11 both sides.Measuring unit 1 structure front elevation when Fig. 6 is the outer raceway diameter of examples measure, Fig. 7 is its vertical view.Fig. 8 is Fig. 6 measuring unit 1A-A face rotation profile and tested raceway 0 cut-open view, the guide effect of the keyway 1341 on the cylinder 1321 of among the figure because screw 132 front portions and the screw rod 134 that is mated, during rotary knob 133, be positioned at the permanent magnet 131 of screw rod 134 front ends can be rotationally near tested raceway 0, thereby producing the enough magnetic force that measuring unit 1 is fixed on the tested raceway 0 between measuring unit 1 and the tested raceway 0; Be the efficient of increase magnet, the surface 1311 that permanent magnet 131 two ends and tested raceway 0 are faced, its shape and tested raceway 0 shape match or are approaching.Fig. 9 is Fig. 6 measuring unit 1B-B face rotation profile and tested raceway 0 cut-open view, is positioned at two the auxiliary positioning mechanisms 14 and tested raceway 0 contact both sides of both sides, body 11 bottom among the figure or keeps small gap.The purpose that auxiliary positioning mechanism 14 is set is measuring unit 1 is positioned a position of being convenient to operate on the direction of rotating around its two location spheroid or part spheroid 12 centre of sphere lines, does not influence measurement result.

Figure 10 is the measuring unit 1 structure front elevation during raceway diameter in the examples measure.Figure 11 is Figure 10 measuring unit 1A-A face rotation profile and tested raceway 0 cut-open view, the guide effect of the keyway 1341 on the cylinder 1321 of among the figure because screw 132 front portions and the screw rod 134 that is mated, during rotary knob 133, be positioned at the permanent magnet 131 of screw rod 134 front ends can be rotationally near tested raceway 0, thereby producing the enough magnetic force that measuring unit 1 is fixed on the tested raceway 0 between measuring unit 1 and the tested raceway 0; Be the efficient of increase magnet, the surface 1311 that permanent magnet 131 two ends and tested raceway 0 are faced, its shape and tested raceway 0 shape match or are approaching.Figure 12 is Fig. 9 measuring unit 1B-B face rotation profile and tested raceway 0 cut-open view, is positioned at two the auxiliary positioning mechanisms 14 and tested raceway 0 contact both sides of both sides, body 11 top among the figure or keeps small gap.As seen, the measuring unit 1 during with outer raceway diameter measurement relatively, during interior raceway diameter measurement, fixed mechanism 13 is oppositely to be installed on measuring unit 1 body 11.

As shown in Figure 1, the operation steps of measuring tested raceway 0 diameter is: a series of measuring units 1 are joined successively put and be fixed on the tested raceway 0 by fixed mechanism 13, to the last a measuring unit 1 of putting and fixing and first measuring unit 1 adjacent positioned spheroid of putting and fixing or the gap between the part spheroid 12 are within the measurement range of measuring the common micrometer inside caliper 2 in gap between ball and the ball.In above-mentioned process of putting measuring unit 1, need make location spheroid or part spheroid 12 on the measuring unit 1 that joins tangent, and make location spheroid on each measuring unit 1 or part spheroid 12 tangent with tested raceway 0 bilateral, the situation of example when the V-arrangement raceway is measured as shown in Figure 8.At last, adopt the common micrometer inside caliper 2 of measuring gap between ball and the ball to measure this gap, and, according to this gap, tested raceway 0 geometric configuration and parameter, and on each measuring unit of putting 1 location spheroid or part spheroid 12 by its position of putting on the tested raceway 0 formed each other geometric relationship and and tested raceway 0 between geometric relationship, obtain tested raceway 0 diameter.

Also can adopt the method for alternately putting measuring unit 1 to measure tested raceway 0 diameter, for outer raceway diameter measurement, as shown in Figure 1, the operation steps of measuring is: at first, the measuring unit 1 of these fixed qties is divided into an initial measurement unit 111, and quantity is made as some circulation measuring units 112 and some motor-driven measuring unit 113 3 classes of n.The equal in length of recommending respectively to circulate measuring unit 112, and being uneven in length of each motor-driven measuring unit 113, and be respectively 1/2,1/4 and 1/8 or the like of circulation measuring unit length.Then, initial measurement unit 111 is put and be fixed on the tested raceway 0 by fixed mechanism 13.After initial measurement unit 111, circulation measuring unit 112 joined successively put and be fixed on the tested raceway 0 by fixed mechanism 13.According to putting order these circulation measuring units 112 are called the 1st circulation measuring unit 112, the 2nd circulation measuring unit 112 ..., until n circulation measuring unit 112.Then, taking out the 1st circulation measuring unit 112 puts and is fixed on after n the circulation measuring unit 112, taking out the 2nd circulation measuring unit 112 again puts and is fixed on after the 1st the circulation measuring unit 112, by that analogy, alternately put and fix this n circulation measuring unit 112, measuring within the measurement range of the common micrometer inside caliper 2 in gap between ball and the ball up to the gap of adjacent positioned spheroid or part spheroid 12 between one of them circulation measuring unit 112 and the initial measurement unit 111.If the gap that can not realize adjacent positioned spheroid between one of them circulation measuring unit 112 and the initial measurement unit 111 or part spheroid 12 is within the measurement range of measuring the common micrometer inside caliper 2 in gap between ball and the ball, put successively after the circulation measuring unit of then in the end putting 112 and fixing motor-driven measuring unit 113, the gap of adjacent positioned spheroid or part spheroid 12 is within the measurement range of measuring the common micrometer inside caliper 2 in gap between ball and the ball between motor-driven measuring unit 113 of to the last putting and fixing and the initial measurement unit 111.In above-mentioned process of putting measuring unit 1, need make location spheroid or part spheroid 12 on the measuring unit 1 that joins tangent, and make location spheroid on each measuring unit 1 or part spheroid 12 tangent with tested raceway bilateral, the situation of example when the V-arrangement raceway is measured as shown in Figure 8.At last, adopt the common micrometer inside caliper 2 of measuring gap between ball and the ball to measure this gap, and, according to this gap, tested raceway 0 geometric configuration and parameter, and on each measuring unit of putting 1 location spheroid or part spheroid 12 by its position of putting on the tested raceway 0 formed each other geometric relationship and and tested raceway 0 between geometric relationship, obtain tested raceway 0 diameter.

For interior raceway diameter measurement, need tested raceway 0 diameter measurement of gauge block 3 auxiliary realizations in addition with two be parallel to each other plane 31 and 32.As shown in Figure 4, the operation steps of measurement is: at first, the measuring unit 1 of these fixed qties is divided into an initial measurement unit 111, quantity is made as some circulation measuring units 112 and some motor-driven measuring unit 113 3 classes of n.The equal in length of recommending respectively to circulate measuring unit 112, and being uneven in length of each motor-driven measuring unit 113, and be respectively 1/2,1/4 and 1/8 or the like of circulation measuring unit length.Then, initial measurement unit 111 is put and be fixed on the tested raceway 0 by fixed mechanism 13.After initial measurement unit 111, circulation measuring unit 112 joined successively put and be fixed on the tested raceway 0 by fixed mechanism 13, and, insert parallel block 3 between initial measurement unit 111 and adjacent with it circulation measuring unit 112, two parallel planes 31 and 32 that make parallel block 3 are tangent with adjacent initial measurement unit 111 and the location spheroid on the circulation measuring unit 112 or part spheroid 12 respectively.According to putting order these circulation measuring units 112 are called the 1st circulation measuring unit 112, the 2nd circulation measuring unit 112 ..., until n circulation measuring unit 112.Then, at first take out parallel block 3, taking out the 1st circulation measuring unit 112 again puts and is fixed on after n the circulation measuring unit 112, taking out the 2nd circulation measuring unit 112 then puts and is fixed on after the 1st the circulation measuring unit 112, by that analogy, alternately put and fix this n circulation measuring unit 112, measuring within the measurement range of the common micrometer inside caliper 2 in gap between ball and the ball up to the gap of adjacent positioned spheroid or part spheroid 12 between one of them circulation measuring unit 112 and the initial measurement unit 111.If the gap that can not realize adjacent positioned spheroid between one of them circulation measuring unit 112 and the initial measurement unit 111 or part spheroid 12 is within the measurement range of measuring the common micrometer inside caliper 2 in gap between ball and the ball, put successively after the circulation measuring unit 112 of then in the end putting and fixing and fixing motor-driven measuring unit 113, the gap of adjacent positioned spheroid or part spheroid 12 is within the measurement range of measuring the common micrometer inside caliper 2 in gap between ball and the ball between motor-driven measuring unit 113 of to the last putting and fixing and the initial measurement unit 111.In described process of putting measuring unit 1, need make location spheroid or part spheroid 12 on the measuring unit 1 that joins tangent, and make location spheroid on each measuring unit 1 or part spheroid 12 tangent with tested raceway bilateral, the situation of example when the V-arrangement raceway is measured as shown in figure 11.At last, adopt the common micrometer inside caliper 2 of measuring gap between ball and the ball to measure this gap, and, according to this gap, tested raceway 0 geometric configuration and parameter, and on each measuring unit of putting 1 on location spheroid or part spheroid 12 and the parallel block 3 parallel plane 31 and 32 by its position of putting on the tested raceway 0 formed each other geometric relationship and and tested raceway 0 between geometric relationship, obtain tested raceway 0 diameter.

Claims (3)

1. rotary support raceway diameter measuring method that is used to have two-sided raceway, it is characterized in that, this method is used for outer raceway diameter measurement, adopt the identical measuring unit (1) of fixed qty and structure and a device (2) of measuring distance between ball and the ball to measure, described measuring unit (1) comprises a body (11), two location spheroid or part spheroids (12) that lay respectively at body (11) two ends, and some fixed mechanisms that includes permanent magnet (131) (13) that is positioned on the body (11);

The operation steps of measuring is: at first, the measuring unit (1) of these fixed qties is divided into an initial measurement unit (111), quantity is made as some circulation measuring units (112) and some motor-driven measuring units (113) three classes of n; Then, initial measurement unit (111) are put and be fixed on the tested raceway by fixed mechanism (13); In initial measurement unit (111) afterwards, circulation measuring unit (112) is joined successively put and be fixed on the tested raceway by fixed mechanism (13); According to putting order these circulation measuring units (112) are called the 1st circulation measuring unit (112), the 2nd circulation measuring unit (112) ..., until n circulation measuring unit (112); Then, take out the 1st circulation measuring unit (112) and put and be fixed on n circulation measuring unit (112) afterwards, take out the 2nd circulation measuring unit (112) again and put and be fixed on the 1st circulation measuring unit (112) afterwards, by that analogy, alternately put and fix this n circulation measuring unit (112), measuring within the measurement range of the device (2) of distance between ball and the ball up to the distance of adjacent positioned spheroid or part spheroid (12) between one of them circulation measuring unit (112) and initial measurement unit (111); If the distance that can not realize adjacent positioned spheroid between one of them circulation measuring unit (112) and initial measurement unit (111) or part spheroid (12) is within the measurement range of measuring the device (2) of distance between ball and the ball, the circulation measuring unit of then in the end putting (112) is put and fixing motor-driven measuring unit (113) afterwards successively, and the distance of adjacent positioned spheroid or part spheroid (12) is within the measurement range of measuring the device (2) of distance between ball and the ball between the motor-driven measuring unit (113) of to the last putting and fixing and initial measurement unit (111); In described process of putting measuring unit (1), need make location spheroid or part spheroid (12) on the measuring unit that joins (1) tangent, and make location spheroid or part spheroid (12) on each measuring unit (1) tangent with tested raceway bilateral; At last, adopt the device (2) of measuring distance between ball and the ball to measure this distance, and, according to this distance, tested raceway geometric configuration and parameter, and each measuring unit of putting (1) go up location spheroid or part spheroid (12) by its position of putting on the tested raceway formed each other geometric relationship and and tested raceway between geometric relationship, obtain tested raceway diameter.

2. rotary support raceway diameter measuring method that is used to have two-sided raceway, it is characterized in that, this method is used for interior raceway diameter measurement, adopt fixed qty and the identical measuring unit (1) of structure, a device (2) and a parallel block (3) of measuring distance between ball and the ball is measured, described measuring unit (1) comprises a body (11), two location spheroid or part spheroids (12) that lay respectively at body (11) two ends, and some fixed mechanisms that include permanent magnet (131) (13) that are positioned on the body (11), described parallel block (3) has two planes that are parallel to each other (31) and (32);

The operation steps of measuring is: at first, the measuring unit (1) of these fixed qties is divided into an initial measurement unit (111), quantity is made as some circulation measuring units (112) and some motor-driven measuring units (113) three classes of n; Then, initial measurement unit (111) are put and be fixed on the tested raceway by fixed mechanism (13); In initial measurement unit (111) afterwards, circulation measuring unit (112) joined successively put and be fixed on the tested raceway by fixed mechanism (13), and, between initial measurement unit (111) and adjacent with it circulation measuring unit (112), insert parallel block (3), make two parallel planes (31) of parallel block (3) and (32) tangent with adjacent initial measurement unit (111) and the location spheroid on the circulation measuring unit (112) or part spheroid (12) respectively; According to putting order these circulation measuring units (112) are called the 1st circulation measuring unit (112), the 2nd circulation measuring unit (112) ..., until n circulation measuring unit (112); Then, at first take out parallel block (3), take out the 1st circulation measuring unit (112) again and put and be fixed on n circulation measuring unit (112) afterwards, take out the 2nd circulation measuring unit (112) then and put and be fixed on the 1st circulation measuring unit (112) afterwards, by that analogy, alternately put and fix this n circulation measuring unit (112), measuring within the measurement range of the device (2) of distance between ball and the ball up to the distance of adjacent positioned spheroid or part spheroid (12) between one of them circulation measuring unit (112) and initial measurement unit (111); If the distance that can not realize adjacent positioned spheroid between one of them circulation measuring unit (112) and initial measurement unit (111) or part spheroid (12) is within the measurement range of measuring the device (2) of distance between ball and the ball, the circulation measuring unit (112) of then in the end putting and fixing is put and fixing motor-driven measuring unit (113) afterwards successively, and the distance of adjacent positioned spheroid or part spheroid (12) is within the measurement range of measuring the device (2) of distance between ball and the ball between the motor-driven measuring unit (113) of to the last putting and fixing and initial measurement unit (111); In described process of putting measuring unit (1), need make location spheroid or part spheroid (12) on the measuring unit that joins (1) tangent, and make location spheroid or part spheroid (12) on each measuring unit (1) tangent with tested raceway bilateral; At last, adopt the device (2) of measuring distance between ball and the ball to measure this distance, and, according to this distance, tested raceway geometric configuration and parameter, and each measuring unit of putting (1) go up the last parallel plane (31) of location spheroid or part spheroid (12) and parallel block (3) and (32) by its position of putting on the tested raceway formed each other geometric relationship and and tested raceway between geometric relationship, obtain tested raceway diameter.

3. rotary support raceway diameter measuring method that is used to have two-sided raceway, it is characterized in that, this method adopts the identical measuring unit of some structures (1) and a device (2) of measuring distance between ball and the ball to measure, described measuring unit (1) comprises a body (11), two location spheroid or part spheroids (12) that lay respectively at body (11) two ends, and some fixed mechanisms that includes permanent magnet (131) (13) that is positioned on the body (11);

The operation steps of measuring is: a series of measuring units (1) are joined successively put and be fixed on the tested raceway by fixed mechanism (13), to the last a measuring unit (1) of putting and fixing and first measuring unit (1) adjacent positioned spheroid of putting and fixing or the distance between the part spheroid (12) are within the measurement range of measuring the device (2) of distance between ball and the ball; In described process of putting measuring unit (1), need make location spheroid or part spheroid (12) on the measuring unit that joins (1) tangent, and make location spheroid or part spheroid (12) on each measuring unit (1) tangent with tested raceway bilateral; At last, adopt the device (2) of measuring distance between ball and the ball to measure this distance, and, according to this distance, tested raceway geometric configuration and parameter, and each measuring unit of putting (1) go up location spheroid or part spheroid (12) by its position of putting on the tested raceway formed each other geometric relationship and and tested raceway between geometric relationship, obtain tested raceway diameter.

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