CN101988815A - Measuring implement of offset of keyway central line on shaft relative to shaft central line - Google Patents

Abstract

The invention discloses a measuring implement of the offset of a keyway central line on a shaft relative to a shaft central line and in particular relates to a measuring implement for measuring the offset of a keyway central line on a shaft relative to a shaft central line, mainly aiming to solve the problem that a measuring implement capable of directly measuring the offset of a keyway central line on a shaft relative to a shaft central line is unavailable at present. The measuring implement comprises a left measuring gauge and a right measuring gauge, wherein a dial indicator is fixed on the upper part of the right measuring gauge, and an elastic compacting block is embedded in the lower part; a movable measuring rod of the dial indicator is in contact with the top of the left measuring gauge; the elastic compacting block embedded in the right measuring gauge is in contact with one side of the left measuring gauge; and the detection inclined angles of the left measuring gauge and the right measuring gauge are the same and both equal to 63 DEG 25' 48''. The invention has the advantages that the measuring implement can be used for directly measuring the offset of the keyway central line on the shaft relative to the shaft central line for equipment of which wheels and the shaft are fixed by a key so as to guarantee precise assembly and improve the mechanical motion property.

Description

The keyway center line is with respect to the measurer of shaft centre line side-play amount on the axle

Technical field:

The present invention relates on a kind of measurement axis the keyway center line with respect to the measurer of shaft centre line side-play amount.

Background technology:

At present, also do not have directly to measure on the shaft keyway center line for wheel and axle with the fixing equipment of key and like this, when assembling, will repair key, cause the assembling out of true, influence the mechanical motion performance with respect to the measurer of shaft centre line side-play amount.

Summary of the invention:

Technical matters to be solved by this invention provides a kind of axle that can measure and directly read total and goes up the measurer of keyway center line with respect to the shaft centre line side-play amount.

Above-mentioned purpose is achieved in that it comprises left gauge and right gauge, right gauge top is fixed with clock gauge, the bottom is embedded with elastic clamping block, the movable measuring staff of clock gauge contacts with the top of left gauge, an elastic clamping block that right gauge is embedded with and a side contacts of left gauge, the detection angle of left side gauge and right gauge equates, and is equal to 63 ° 25 ' 48 ".

Advantage of the present invention is can directly measure on the shaft keyway center line with respect to the side-play amount of shaft centre line for wheel and axle with the fixing equipment of key, thereby guarantees that assembling accurately, improves the mechanical motion performance.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is that the present invention inserts the constitutional diagram in the keyway of the shaft section 6 that has standard keyway;

Fig. 3 is that the present invention inserts the constitutional diagram in the shaft section 6 that keyway center line N2 and shaft centre line N1 side-play amount are e;

Fig. 4 takes away the present invention among Fig. 3, tangent plane BA and the B ' A ' tangent left gauge 1, right gauge 4 and shaft section 6 peripheries intersect at A and A ' respectively with keyway bottom surface CC ', in shaft section 6, form two triangle ABC and A ' B ' C ', S is the distance of BC and B ' C ', be that keyway is wide, F is the distance of A and A '.

Embodiment:

With reference to Fig. 1, it comprises left gauge 1 and right gauge 4, right gauge 4 tops are fixed with clock gauge 3, the bottom is embedded with elastic clamping block 5, the movable measuring staff 2 of clock gauge 3 contacts with the top of left gauge, an elastic clamping block that right gauge is embedded with and a side contacts of left gauge, the detection angle of left gauge and right gauge equates, and is equal to 63 ° 25 ' 48 ".

Usage and principle of work: with reference to Fig. 2, the present invention is inserted in the keyway of the shaft section 6 that has standard keyway, because keyway is a standard, keyway center line N2 overlaps with shaft centre line N1, and the reading of clock gauge 3 is adjusted into zero (the zeroing process before promptly measuring).Then the present invention is inserted keyway center line N2 and shaft centre line N1 side-play amount and be in the keyway of shaft section 6 of e (with reference to Fig. 3); Then member of the present invention is taken away (with reference to Fig. 4), tangent plane BA and the B ' A ' tangent left gauge 1, right gauge 4 and shaft section 6 cylindricals give A and A ' respectively mutually with keyway bottom surface CC ', form two triangle ABC and A ' B ' C ' in shaft section 6.S is the distance of BC and B ' C ',

AC=S---be that keyway is wide, F is the distance of A and A ', and Δ H is that the difference in height of left gauge 1, right gauge 4 corresponding point B and B ' is the reading of clock gauge 3.

ΔH＝B′C′-BC ………………………………①

In triangle ABC and A ' B ' C ': BC=AC/tg α ... 2.

B′C′＝A′C′/tgα ……………………………③

And $\mathrm{AC}=\frac{F}{2}-e-\frac{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="H2009100129914E0000011.png,H2009100129914E0000012.png"\; state="\{\{state\}\}">S</figure-callout>}}{2}$ ……………………………④

$A^{\&prime;}{C}^{\&prime;}=\frac{F}{2}-(\frac{S}{2}-e)$ ……………………………⑤

Will be 5., 4. reach 3., 2. in the substitution 1.:

$\mathrm{\&Delta;H}=\frac{A^{\&prime;}{C}^{\&prime;}}{\mathrm{tga}}-\frac{\mathrm{AC}}{\mathrm{tga}}=\frac{\frac{F}{2}-(\frac{S}{2}-e)-(\frac{F}{2}-e-\frac{S}{2})}{\mathrm{tga}}=\frac{2e}{\mathrm{tga}}$ ……………⑥

Because the reading Δ H of clock gauge 3 will equal side-play amount e, substitution 6. formula gets:

Tg α=2, α=arctg2=63 ° 25 ' 48 ", so the reading Δ H of clock gauge 3 just equals the side-play amount e of keyway center line N2 with respect to shaft centre line N1.

Claims (2)

1. axle is gone up the measurer of keyway center line with respect to the shaft centre line side-play amount, comprise left gauge (1) and right gauge (4), it is characterized in that right gauge (4) top is fixed with clock gauge (3), the bottom is embedded with elastic clamping block (5), the movable measuring staff (2) of clock gauge (3) contacts with the top of left gauge, an elastic clamping block that right gauge is embedded with and a side contacts of left gauge, the detection angle of left gauge and right gauge equates.

2. go up the measurer of keyway center line according to the described axle of claim 1, it is characterized in that the detection angle of left gauge (1) and right gauge (4) is equal to 63 ° 25 ' 48 " with respect to the shaft centre line side-play amount.

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