CN105783674A - Large motor rotor lower flywheel conical surface measuring tool - Google Patents

Abstract

The invention relates to a large motor rotor lower flywheel conical surface measuring tool.The large motor rotor lower flywheel conical surface measuring tool is specially invented in order to conduct finish grinding on the installation conical surface of a rotor lower flywheel.The tool is installed on the rotor lower flywheel conical surface, when the installation conical surface of the lower flywheel is ground to a certain amount, the big head diameter d1' of the conical surface and the small head diameter d2' of the conical surface are measured respectively through a ball head micrometer, the big head diameter d1 of the conical surface and the small head diameter d2 of the conical surface are calculated through a formula, the d1' is compared with the d1, the d2' is compared with the d2, and comparison is conducted till the d1' and the d2' are within the tolerance of the d1 and the d2 through machining.According to the large motor rotor lower flywheel conical surface measuring tool, the finish grinding motor rotor shaft conical surface measurement problem is solved, by using the tool, the conical surface size can be accurately and rapidly measured, and high precision is achieved.

Description

Flywheel conical surface survey tool under Large Rotor

Technical field: the present invention relates to flywheel conical surface survey tool under Large Rotor.

Background technology: in nuclear power three generations's accurately machined process of main pump motor rotor, needing the Precise Grinding conical surface, this is accomplished by measuring accurately the conical surface, owing to the diameter of axle is big, measure with corresponding ring gauge, weight big in-convenience in use, numerical value accurately can not be measured.

Summary of the invention: it is an object of the invention to provide a kind of survey tool that can measure conical surface size fast, accurately.The technical scheme is that location dish (1) is fixed in the outside cylinder of rotor (6) by lock-screw (3) and shop bolt (4), location dish (1) one end is attached on rotor (6) step end face, the inclined-plane of the first extension rod (2) and the second extension rod (7) is attached on the conical surface of rotor (6), one end of first extension rod (2) and the second extension rod (7) is attached on the end face of location dish (1), the waist hole of two screws (5) traverse location dish (1), respectively by the first extension rod (2), second extension rod (7) is fixed on the end face of location dish (1).Use bulb miking, the side of the first bulb micrometer (8) is attached to the end face of location dish (1), measure the maximum d1 of the conical surface, two bulb sides of the second bulb micrometer (9) are respectively attached to the first extension rod (2) and the end face of the second extension rod (7), measure the maximum d2 of the conical surface, as follows:

$d1=d3-d(\tan \frac{\mathrm{\α}}{2}-\frac{1}{\cos \frac{\mathrm{\α}}{2}}+1)$

$d2=d1-2Ltan\frac{\mathrm{\α}}{2}$

Wherein, the length value L of the first extension rod (2) and the second extension rod (7), conical surface outside diameter d3, the diameter d of bulb micrometer, the angle [alpha] of the conical surface.

Its operation principle of the present invention is: lower flywheel installs conical surface grinding to time a certain amount of, use bulb miking size d1 as shown in Figure 3, size d2 as shown in Figure 4, utilize the diameter d of bulb micrometer, the length L of the first extension rod (2) and the second extension rod (7) and the big end body diameter d3 of the conical surface, frustoconical bevel angle α, conical surface diameter at butt end d1 ' is measured respectively with bulb micrometer, with conical surface top diameter d2 ', the conical surface diameter at butt end d1 calculated by formula and conical surface top diameter d2, d1 ' compares with d1, compared with d2 ' and d2, until d1 ', d2 ' is all worked into d1, in the tolerance of d2.

Advantage of the present invention has the advantage that with the contrast of other similar means

Measured the flywheel installation conical surface under Large Rotor to need to test color method measurement with ring gauge, during inspection tapering, it is necessary to make the rotor conical surface and ring gauge inner conical surface fit tightly, rotate the angle that ring gauge is certain in the past.Owing to the root diameter of large-size machine is relatively larger, corresponding measurement ring gauge weight is big, operating difficulties, and can not measure the numerical value of actual tapering.When using the present invention to measure the flywheel installation conical surface under Large Rotor, location dish (1) is fixed in the outside cylinder of rotor (6) by lock-screw (3) and shop bolt (4), location dish (1) one end is attached on rotor (6) step end face, the inclined-plane of the first extension rod (2) and the second extension rod (7) is attached on the conical surface of rotor (6), one end of first extension rod (2) and the second extension rod (7) is attached on the end face of location dish (1), the waist hole of two screws (5) traverse location dish (1), respectively by the first extension rod (2), second extension rod (7) is fixed on the end face of location dish (1).Such structure alleviates the weight of instrument, when measuring the conical surface, only need to use 2 diameters of bulb miking, contrast with theoretical value, actual measured value be ground in tolerance.The weight ratio of the present invention is relatively light, simple in construction, easy to use, it is possible to measure conical surface size fast and accurately.

Accompanying drawing explanation

Fig. 1 is that under Large Rotor, view installed by flywheel conical surface survey tool

Fig. 2 is that under Large Rotor, left view partial sectional view measured by flywheel conical surface survey tool

Fig. 3 outside diameter measures view

Fig. 4 small end taper measurement view

Detailed description of the invention

When measuring the flywheel installation conical surface under Large Rotor, the present invention is arranged on rotor 6 end face, as shown in Figure 2, location dish 1 is fixed in the outside cylinder of rotor 6 by lock-screw 3 and shop bolt 4, as shown in Figure 1, location dish 1 one end is attached on rotor 6 step end face, the inclined-plane of the first extension rod 2 and the second extension rod 7 is attached on the conical surface of rotor 6, one end of first extension rod 2 and the second extension rod 7 is attached on the end face of location dish 1, the waist hole of two screw 5 traverse location dishes 1, respectively by the first extension rod 2, second extension rod 7 is fixed on the end face of location dish 1.Lower flywheel installs conical surface grinding to time a certain amount of, use bulb miking size d1 as shown in Figure 3, size d2 as shown in Figure 4, utilize the diameter d of bulb micrometer, the length L and the big end body diameter d3 of the conical surface of the first extension rod 2 and the second extension rod 7, frustoconical bevel angle α, conical surface diameter at butt end d1 ' is measured respectively with bulb micrometer, with conical surface top diameter d2 ', the conical surface diameter at butt end d1 calculated by formula and conical surface top diameter d2, d1 ' compares with d1, compared with d2 ' and d2, until d1 ', d2 ' is all worked into d1, in the tolerance of d2.

Use bulb miking, the side of the first bulb micrometer 8 is attached to the end face of location dish 1, measure the maximum d1 of the conical surface, two bulb sides of the second bulb micrometer 9 are respectively attached to the end face of the first extension rod 2 and the second extension rod 7, measure the maximum d2 of the conical surface, as follows:

$d1=d3-d(\tan \frac{\mathrm{\α}}{2}-\frac{1}{\cos \frac{\mathrm{\α}}{2}}+1)$

$d2=d1-2Ltan\frac{\mathrm{\α}}{2}$

Wherein, the length value L of the first extension rod 2 and the second extension rod 7, conical surface outside diameter d3, the diameter d of bulb micrometer, the angle [alpha] of the conical surface.

Claims (2)

1. flywheel conical surface survey tool under a Large Rotor, it is characterized in that: location dish (1) is fixed in the outside cylinder of rotor (6) by lock-screw (3) and shop bolt (4), location dish (1) one end is attached on rotor (6) step end face, the inclined-plane of the first extension rod (2) and the second extension rod (7) is attached on the conical surface of rotor (6), one end of first extension rod (2) and the second extension rod (7) is attached on the end face of location dish (1), the waist hole of two screws (5) traverse location dish (1), respectively by the first extension rod (2), second extension rod (7) is fixed on the end face of location dish (1).

2. flywheel conical surface survey tool under a kind of Large Rotor according to claim 1, it is characterized in that: use bulb miking, the side of the first bulb micrometer (8) is attached to the end face of location dish (1), measure the maximum d1 of the conical surface, two bulb sides of the second bulb micrometer (9) are respectively attached to the first extension rod (2) and the end face of the second extension rod (7), measure the maximum d2 of the conical surface, as follows:

$d1=d3-d(\tan \frac{\mathrm{\α}}{2}-\frac{1}{\cos \frac{\mathrm{\α}}{2}}+1)$

$d2=d1-2L\tan \frac{\mathrm{\α}}{2}$

Wherein, the length value L of the first extension rod (2) and the second extension rod (7), conical surface outside diameter d3, the diameter d of bulb micrometer, the angle [alpha] of the conical surface.