CN201673088U

CN201673088U - A sample stage for a Vickers hardness tester

Info

Publication number: CN201673088U
Application number: CN2010201721813U
Authority: CN
Inventors: 王海涛; 屈朝霞; 许磊
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2010-04-26
Filing date: 2010-04-26
Publication date: 2010-12-15
Anticipated expiration: 2020-04-26

Abstract

The utility model discloses a sample platform for a Vickers hardness tester, which comprises a base, a first moving plate, a second moving plate, a fixing clamp and a sample clamp, and the first moving plate is placed on the base and can slide relative to the base; the second moving plate is placed on the first moving plate and can slide relative to the first moving plate; the direction in which the first moving plate slides relative to the base Vertical to the direction in which the second moving plate slides relative to the first moving plate; the fixing clip is fixed on the second moving plate by screws; the bottom of the sample clamp is provided with a spherical universal joint, so The spherical universal joint is placed in the fixing clip, and can be locked and fixed by a locking bolt arranged on the fixing clip. Through the sample table used for the Vickers hardness tester of the utility model, the influence of the shape of the sample on the Vickers hardness test accuracy can be effectively reduced, the measurement accuracy is improved, and the Vickers hardness measurement is more convenient.

Description

A kind of sample bench that is used for the Vickers hardness instrument

Technical field

The utility model relates to a kind of hardness measuring device, particularly a kind of sample bench that is used for the Vickers hardness instrument.

Background technology

Vickers hardness is the hardness number of representing with the mean pressure that bears on the positive rectangular pyramid shape impression per surface area, under the test power effect of regulation, with the opposite angle is that 136 ° square cone diamond penetrator is pressed into the surface, and keeps official hour, removes test power then.Like this, extrude the impression of a cubic taper from the teeth outwards, measure two cornerwise average lengths of impression, calculate the area of indentation, thus the hardness number of drawing.

Vickers hardness test is detection method commonly used, important in the metallicity test, and the Vickers hardness instrument is to test surfaces quality requirements height, and particularly the horizontality to the measured surface of test sample requires very high.If the measured surface of sample is not in horizontality, may cause the impression shape is not positive rectangular pyramid shape, and therefore the hardness number that obtains is just inaccurate.

Currently used Vickers hardness instrument is fixedly pressure head, vertical loading, and sample platform is only to move along the pressure head direction and to move in the plane perpendicular to the pressure head direction, when institute tested plane of test specimens and support plane are not parallel, as vertical hardness, the test sample of testing circumference class sample are irregular etc., just can cause test surfaces and pressure head out of plumb, consequently: light then can't obtain the rule impression, have a strong impact on measuring accuracy; Heavy then damage pressure head and cause device damage, in order to obtain hardness test result accurately, must accurately process sample, make sample plane to be measured and support the plane keeping parallelism, this has increased proof strength and test period greatly.

The utility model content

For addressing the above problem, the utility model provides a kind of sample bench that is used for the Vickers hardness instrument, can regulate the position of different shape sample and tested levelness, solve in the past that Vickers hardness instrument test accuracy is subjected to specimen shape, particularly tested with support problems such as the influence of plane parallel degree is remarkable.

For achieving the above object, the sample bench that is used for the Vickers hardness instrument of the present utility model comprises base, first movable plate, second movable plate, geometrical clamp and sample holder, and described first movable plate places on the described base, and can slide by described relatively base; Described second movable plate places on described first movable plate, and can slide by described relatively first movable plate; The direction that relative described first movable plate with described second movable plate of the direction that the described relatively base of described first movable plate slides slides is vertical; Described geometrical clamp by screw retention on described second movable plate; The bottom of described sample holder is provided with universal ball joint, and described universal ball joint places described geometrical clamp, and can be locked by a clamping screw that is arranged on the described geometrical clamp.

First adjusting screw(rod) is installed on described base, and the below of described first movable plate is provided with the threaded hole that is threaded with described first adjusting screw(rod); On described first movable plate second adjusting screw(rod) is installed, the below of described second movable plate is provided with the threaded hole that is threaded with described second adjusting screw(rod).

The sample bench that is used for the Vickers hardness instrument of the present utility model, reduced the Vickers hardness instrument to sample plane to be measured and the depth of parallelism requirement of supporting the plane, can make the Vickers hardness instrument be suitable for the Vickers hardness test of arbitrary shape sample, reduced the specimen preparation cost, be applicable to that also requirement carries out the occasion that Vickers hardness detects fast.By the sample bench that is used for the Vickers hardness instrument of the present utility model, can effectively reduce the influence that the Vickers hardness test precision is subjected to specimen shape, improved measuring accuracy, and it is more convenient that Vickers hardness is measured.

Description of drawings

Fig. 1 is the sample bench schematic perspective view that is used for the Vickers hardness instrument of the present utility model;

Fig. 2 is for being used for the structural representation of the sample bench of Vickers hardness instrument among Fig. 1;

Fig. 3 is that sample bench of the present utility model is installed in the synoptic diagram on the Vickers hardness instrument.

Embodiment

Fig. 1 is the sample bench schematic perspective view that is used for the Vickers hardness instrument of the present utility model, and Fig. 2 is for being used for the structural representation of the sample bench of Vickers hardness instrument among Fig. 1.As illustrated in fig. 1 and 2, the sample bench that is used for the Vickers hardness instrument of the present utility model comprises base 10, first movable plate 20, second movable plate 30, geometrical clamp 40 and sample holder 50, described first movable plate 20 places on the described base 10, and can slide by described relatively base 10; Described second movable plate 30 places on described first movable plate 20, and can slide by described relatively first movable plate 20; The direction that the described relatively base 10 of described first movable plate 20 slides is vertical with the direction that described second movable plate, 30 relative described first movable plates 20 slide; Described geometrical clamp 40 by screw retention on described second movable plate 30; The bottom of described sample holder 50 is provided with universal ball joint 51, and described universal ball joint 51 places described geometrical clamp 40, and can be locked by a clamping screw 41 that is arranged on the described geometrical clamp 40.

The described relatively base of described first movable plate 20 10 slides, can be by on described base 10, offering chute, and described first movable plate 20 is provided with guide rail and realizes; Described relatively first movable plate 20 of same described second movable plate 30 slides also can adopt in the same way and realizes, as illustrated in fig. 1 and 2.By the adjusting of two orthogonal relative slips, can be implemented in the adjusting about front and back on the horizontal level.

The adjusting of described relatively base 10 slide displacements of described first movable plate 20 can adopt screw rod to realize, as illustrated in fig. 1 and 2, first adjusting screw(rod) 11 is installed on described base 10, and the below of described first movable plate 20 is provided with the threaded hole that is threaded with described first adjusting screw(rod) 11.Be installed on the described base 10 the two ends axial limiting of described first adjusting screw(rod) 11.

Equally, the adjusting of described relatively first movable plate of described second movable plate 30 20 slide displacements also can be adopted above-mentioned same mode, on described first movable plate 20 second adjusting screw(rod) 21 is installed, the below of described second movable plate 30 is provided with the threaded hole that is threaded with described second adjusting screw(rod) 21.Be installed on described first movable plate 20 the two ends axial limiting of described second adjusting screw(rod) 21.

By regulating described first adjusting screw(rod) 11 and second adjusting screw(rod) 21, just can realize the slip of the described relatively base 10 of described first movable plate 20 and the slip of described second movable plate, 30 relative described first movable plates 20, carry out hardness test under the Vickers pressure head thereby can easily the sample in the sample holder 50 be moved to.

Can realize the levelness adjusting of the sample measured surface in the sample holder 50 by regulating described sample holder 50.At first horizontal measuring instrument is placed the sample measured surface, then the clamping screw on the geometrical clamp 40 41 is unscrewed, at this moment universal ball joint 51 can freely rotate at geometrical clamp 40, adjust the angle of inclination of sample holder 50, just can make the sample measured surface be in horizontality, and then tighten the clamping screw 41 on the geometrical clamp 40.Described geometrical clamp 40 can adopt the circular ring structure that is provided with opening, and described clamping screw 41 is arranged on aperture position, by tightening and unscrew the size of regulating opening, thereby realizes that geometrical clamp 40 clamps and loosens the universal ball joint 51 of described sample holder 50 bottoms.

Fig. 3 is that sample bench of the present utility model is installed in the synoptic diagram on the Vickers hardness instrument, as shown in the figure, the base 10 of the sample bench that is used for the Vickers hardness instrument of the present utility model is fixedlyed connected with the lifting screw 2 on the pedestal 1 of Vickers hardness instrument, its connected mode can adopt thread connecting mode, also can adopt other modes to fix, as welding, bolt connection etc.The level that just can regulate the sample measured surface by the angle of inclination of regulating sample holder 50, by regulating described first adjusting screw(rod) 11 and second adjusting screw(rod) 21, the sample measured position is moved on under the micro objective, just can carry out the Vickers hardness test then according to Vickers hardness instrument working rule.

Claims

1. a sample stage for Vickers hardness tester, is characterized in that, comprises base, the first moving plate, the second moving plate, fixed clip and sample holder,

The first moving plate is placed on the base and can slide relative to the base;

The second moving plate is placed on the first moving plate and can slide relative to the first moving plate;

The direction in which the first moving plate slides relative to the base is perpendicular to the direction in which the second moving plate slides relative to the first moving plate;

The fixing clip is fixed on the second moving plate by screws;

The bottom of the sample holder is provided with a spherical universal joint, and the spherical universal joint is placed in the fixing clip and can be locked and fixed by a locking bolt arranged on the fixing clip.

2. the sample stage for Vickers hardness tester as claimed in claim 1, is characterized in that, on described base, first adjustment screw rod is installed, the below of described first moving plate is provided with described second A threaded hole for threaded connection of the adjusting screw; a second adjusting screw is installed on the first moving plate, and a threaded hole for threading the second adjusting screw is provided under the second moving plate.