CN2125809U

CN2125809U - Indicating mcrocalliper

Info

Publication number: CN2125809U
Application number: CN 92210591
Authority: CN
Inventors: 王忠本
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-07
Filing date: 1992-04-07
Publication date: 1992-12-23

Abstract

The utility model provides an indicating mcrocaliper used for measuring the external dimensions. The indicating mcrocaliper comprises a ruler frame, a differential head and a length rod. The utility model is characterized in that the measuring end of the fixed measuring head of the ruler frame is provided with a dial test indicator (dial indicator) which is connected with the measuring head of a spherical surface (or the spherical measuring head) of the end. The utility model has the advantages of convenient operation, high measuring precision, small error, simple structure and convenient maintenance.

Description

Indicating mcrocalliper

The utility model belongs to mechanical measurement measurer technical field, specifically a kind of novel milscale.

Milscale is to measure physical dimension measurer commonly used in producing at present.Common milscale is when measuring measured piece, and the variation that exists with the measured piece size increases (or dwindling) measurement difficulty and error increase.Therefore, structurally there is following defective in existing common milscale: 1, reduce because of the increase along with measured size of the ratio of the diameter of milscale gauge head workplace and measured size, as when measuring 25 millimeters size, ratio is 8/25=0.32, when measuring 250 millimeters size, ratio is 8/25=0.032, and ratio differs 10 times, and this is a main cause of measuring the bad measurement of large scale; 2, the collimation error of large scale milscale workplace is bigger, and the workplace of milscale can not reach preferably with measured piece and contact when therefore measuring; 3, measure be intermittently rather than continuous because need to give dynamometry when measuring while swing, the dynamometry trend of increase in addition like this; Whether milscale is on the correct position when 4, measuring, and can not observe by the reading of milscale itself, but judge with operator's feel, and its accuracy is relatively poor.

The purpose of this utility model provides a kind of the elimination with the measured piece change in size and increases the indication milscale of measuring difficulty and error and remedying common milscale deficiency.

The purpose of this utility model is achieved in that it includes chi frame, differential head, measuring staff, it is characterized in that the chi frame fixedly the measuring junction of gauge head be provided with a dial gauge (clock gauge) that links to each other with this end sphere gauge head (or ball-type gauge head).This structure as long as measure measured piece according to common milscale working specification, then just can demonstrate the size of measured piece from the dial plate of dial gauge in use.

Therefore the utility model has following advantage owing to improve on the basis of existing milscale:

1, dynamometry is stable, has reduced the unbalanced error of bringing of dynamometry.Because dial plate shows survey measurements, is convenient to then judge whether milscale is in institute's location and puts, therefore can improve the accuracy of measurement.

2, be convenient to calibrate zero-bit, before measurement, can carry out zero adjustment at any time, in other words, make the calibration zero-bit and measure to keep under equal conditions, can reduce or eliminate like this because the error that the distortion of chi frame is brought.

3, owing to adopt the sphere gauge head, therefore reduce the plane parallel error that the plane gauge head exists, removed the problem of large-scale milscale plane gauge head plane parallel maintenance difficulty from.

4, this structure also have easy to operate, measuring accuracy height, characteristics such as error is little, and applied range is simple in structure, and is easy to maintenance.

Below in conjunction with accompanying drawing embodiment of the present utility model is described further.

Fig. 1 is a structural representation of the present utility model.

By shown in Figure 1, end at chi frame 2 is fixed with a differential head 1, the other end at the chi frame relative with the differential head is fixed with measuring staff 4, is provided with a dial gauge 5 that links to each other with the movable sphere gauge head 3 of measuring staff the inner in the outer end of measuring staff 4, and the sphere gauge head is connected with the dial gauge pointer by driving member.During measurement, working specification according to common milscale is measured measured piece, movable sphere gauge head acts on the pointer shaft on the dial gauge and uses it to rotate measuring power that measured piece produced by driving member, then pointer just points to the scale position of the size of surveying, thereby has finished measuring process.The utility model also can be changed the ball-type gauge head with movable sphere gauge head as required, just can measure outer rotor and external thread etc.Measuring principle of the present utility model and omnipotent survey meters seemingly, so its measuring error is less, the measuring accuracy height.

Claims

1, a kind of indication milscale of measuring physical dimension that is applicable to, it includes chi frame, differential head, measuring staff, it is characterized in that the chi frame fixedly the measuring junction of gauge head be provided with a dial gauge or a clock gauge that links to each other with this end sphere gauge head or ball-type gauge head.

2, indication milscale according to claim 1 is characterized in that dial gauge or clock gauge are that the outer face that is fixed on measuring staff links to each other with sphere gauge head or ball-type gauge head.