CN2709929Y

CN2709929Y - Implement for measuring round pulsation value of end to hole

Info

Publication number: CN2709929Y
Application number: CN 200420039862
Authority: CN
Inventors: 刘红艳; 刘家峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-22
Filing date: 2004-04-22
Publication date: 2005-07-13
Anticipated expiration: 2014-04-22

Abstract

The utility model discloses an implement for measuring round pulsation value of end to hole, comprising a fixed feeler pin, a supporting frame, a core axle, a dial indicator, etc. The dial indicator is fixed on the spindle via the supporting frame and a fixed feeler pin is arranged on the position of the other side of the dial indicator fixed via the supporting frame which is symmetrical to the feeler pin of the dial indicator. Make the reference hole of the measured part to be vertical to the horizontal plane with the measured plane upward, and insert the core axle into the reference hole with the fixed feeler pin and the feeler pin of the dial indicator pointing at the measured plane simultaneously, then rotate the core axle for 360 degrees and via processing the difference between the minimum and the maximum indicated by the dial indicator, the round pulsation value of end to hole of the measured plane can be measured. The measuring implement enables the measurement to be simple use and easy realization with low measuring expenses, which can enlarge the measuring frequency of the parts and is good for the improvement of the production quality.

Description

End face is to the benchmark circle pulsation measuring tool

The utility model relates to the measuring appliance of mechanical component position of related features, and especially end face is to the measuring appliance of benchmark circle pulsation.

Some mechanical component end face will be used three-coordinates measuring machine to the measurement of benchmark circle pulsation now, and the price of three-coordinates measuring machine is higher at present, and measurement expense is also high.General midget plant should be have more than is needed.Another kind method is: the part that survey be supported on make its datum hole vertical on the flat board with surface level, survey towards last.Select to be mated the very little mandrel in gap according to the physical size of datum hole, on axle, adorn a dial gauge by support.Dull and stereotyped and axle bottom center hole between put a suitable steel ball after being contained in the datum hole to axle, this moment, the gauge head of dial gauge can refer at the appropriate location and the dial gauge of tested surface suitable range is arranged.Mandrel 360 degree are handled the minimum point of dial gauge demonstration and the difference of peak, just can draw the round jitter values of tested surface to datum hole.Whole process is cumbersome.Special in the big part of complex structure quality, above-mentioned two kinds of measuring methods should use and all compare difficulty.

The purpose of this utility model provides a kind of easy end face to the benchmark circle pulsation measuring tool, makes measurement convenient and swift.

The purpose of this utility model realizes as follows: measurer is made up of fixing parts such as gauge head, support, mandrel, dial gauge.Dial gauge is fixed on the mandrel by support, and fixedly dial gauge opposite side and dial gauge gauge head install and fix gauge head for the position of mandrel axis symmetry at support.Mandrel should be able to be free to slide and rotate in datum hole, and tolerance clearance is pressed H8/g6.

During measurement, make the datum hole that to measure part vertical substantially with surface level, tested towards last, mandrel is inserted in the datum hole, fixedly gauge head and dial gauge gauge head refer to simultaneously on tested face, rotation mandrel's 360 degree just can draw the round jitter values of tested surface to datum hole by the minimum point of dial gauge demonstration and the difference of peak are handled.Because this measurer is relative measurement, under the effect of gravity, the less gap of mandrel and datum hole does not influence measuring accuracy.So needn't match mandrel when measuring, make measuring process simple and easy to do, measurement expense is low.Can strengthen the measurement frequency, help the raising of product quality part.

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

Accompanying drawing 2 is cut-open views that accompanying drawing 1 prolongs B-B.Accompanying drawing 1 is that the A of accompanying drawing 2 is to view.

With reference to accompanying drawing 1, accompanying drawing 2, its endoporus of support 5 usefulness and bolt 1 are fixed on the upper end of mandrel 6, and dial gauge 7 is contained in support 5 grooved bore corresponding with it, 2 are fixed by tighting a bolt.Fixedly gauge head 3 be contained in support 5 other ends with the threaded hole of dial gauge hole for mandrel axis symmetry in, be fixed in position with nut 4.Mandrel 6 should be able to be free to slide and rotate in datum hole φ, and H8/g6 is pressed in its gap, gap.During measurement, make the datum hole φ that will measure part 8 vertical substantially with surface level, tested face M upwards, mandrel is inserted among the datum hole φ, fixedly the gauge head of gauge head 3 and dial gauge 7 refers to simultaneously on tested face M, rotates measurer 360 degree, draws the minimum point of dial gauge 7 demonstrations and the difference h of peak.Under the situation that the shape error of tested surface is ignored, according to geometrical principle: whole measurer moves up and down with the fixing position of gauge head contact point under the effect of its gravity, this amount of movement is exactly the round jitter values that face M goes up this point, since the gauge head of dial gauge with fixing gauge head for the position of mandrel axis symmetry, so the value h that dial gauge shows is 2 times of this null circle jitter values.Because of the gauge head contact point is not the maximum cylindrical of plane M, so tested surface M is for roundness error b=h ÷ 2 ÷ d * D of datum hole φ.

Claims

A kind of end face is to the benchmark circle pulsation measuring tool: it is by fixing gauge head (3), support (5), mandrel (6), dial gauge parts such as (7) is formed, it is characterized in that: support (5) is fixed on the upper end of mandrel (6) with its endoporus and bolt (1), dial gauge (7) is contained in support (5) grooved bore corresponding with it, (2) are fixed by tighting a bolt, fixedly gauge head (3) be contained in support (5) other end with the threaded hole of dial gauge hole for mandrel axis symmetry in, be fixed in position with nut (4), mandrel (6) should be able to be free to slide and rotate in datum hole φ, and tolerance clearance is pressed H8/g6.