CN221038556U - Coaxiality calibrating device of tensile testing machine - Google Patents

Abstract

The utility model discloses a coaxiality calibration device of a tensile testing machine, which comprises a base, wherein a driving groove is formed in the base, a lower clamp is arranged on the upper end face of the base, two mounting seats are symmetrically arranged on the base, a top plate is jointly arranged at the upper ends of the two mounting seats, sliding grooves are formed in each mounting seat, ball screws are arranged in each sliding groove, one end of each ball screw penetrates through each mounting seat and extends to the inside of the base, the two ball screws are connected through a synchronous mechanism, a motor is arranged in each driving groove, and the output end of the motor is connected with the input end of the synchronous mechanism. The utility model has reasonable structural design, the upper clamp and the lower clamp are provided with the two standard shafts, and coaxiality detection of the clamp at different positions can be carried out by displacing the upper clamp and rotating the calibration device arranged on the standard shafts, so that the detection is more convenient and rapid, and a high-cost detection device is not needed.

Description

Coaxiality calibrating device of tensile testing machine

Technical Field

The utility model relates to the technical field of coaxiality detection devices, in particular to a coaxiality calibration device of a tensile testing machine.

Background

The tensile testing machine is used for testing the tensile property of materials, the coaxiality correction is used for guaranteeing the accuracy and the reliability of test results, in the tensile test, two ends of a sample are clamped and deform under the action of tensile force, if the upper clamping head and the lower clamping head of the testing machine are not coaxial, the sample is distorted or inclined in the tensile process, and therefore the accuracy of the test results is affected, and therefore the coaxiality correction of the tensile testing machine is very important.

The existing detection method is to clamp a standard mandrel on an upper chuck and a lower chuck, and detect the displacement produced by the upper and lower parts of the standard mandrel after clamping by a displacement sensor so as to determine whether the upper chuck and the lower chuck are coaxial.

Disclosure of utility model

The utility model aims to solve the problems in the background technology and provides a coaxiality calibration device of a tensile testing machine.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a tensile testing machine axiality calibrating device, includes the support base, the drive slot has been seted up in the support base, lower anchor clamps are installed to the up end of support base, the symmetry is equipped with two mount pads on the support base, two the roof is installed jointly to the upper end of mount pad, every all seted up the sliding tray in the mount pad, every all be equipped with ball screw in the sliding slot, and the one end of every ball screw all runs through the mount pad and extends to the inside of support base, two connect through synchro mechanism between the ball screw, be equipped with the motor in the drive slot, and the output of motor is connected with synchro mechanism's input, two common threaded connection has the fixed plate between the ball screw, the lower terminal surface of fixed plate is equipped with anchor clamps, the card is equipped with standard axle two in the anchor clamps, the cover is equipped with calibration mechanism on the outer wall of standard axle two, the one end cover that calibration mechanism kept away from the upper anchor clamps is equipped with standard axle one, and the card is established in lower anchor clamps.

Preferably, the synchronizing mechanism comprises two synchronizing wheels, the two synchronizing wheels are respectively arranged on the two ball screws, and the two synchronizing wheels are sleeved with a synchronous belt.

Preferably, the calibrating mechanism comprises a fixed base, a rotating groove is formed in the fixed base, a rotating ball is clamped in the rotating groove, a telescopic rod is mounted on the rotating ball, one end of the telescopic rod, far away from the fixed base, is welded with a rotating sleeve, a dynamometer is arranged on the rotating sleeve, an output shaft of the dynamometer penetrates through the rotating sleeve to extend and mount a dynamometer spring, and one end of the dynamometer spring is welded with the dynamometer ball.

Preferably, the center line of the upper clamp is on the same straight line with the center line of the lower clamp.

Compared with the prior art, the utility model has the beneficial effects that:

1. The calibration device capable of moving along with the upper clamp is arranged, coaxiality detection can be carried out at any position in the moving range of the upper clamp, and a complex calibration method and device are not needed, so that calibration is more convenient.

2. The two standard shafts are arranged, the numerical value can be read by rotating the fixed calibration device on the standard shaft, and whether the lower clamp and the upper clamp are coaxial or not can be detected without a plurality of standard shafts with different lengths.

In summary, the utility model has reasonable structural design, the upper clamp and the lower clamp are provided with the two standard shafts, and the coaxiality of the clamps at different positions can be detected by displacing the upper clamp and rotating the calibration device arranged on the standard shafts, so that the detection is more convenient and faster, and a high-cost detection device is not needed.

Drawings

FIG. 1 is a schematic diagram of a device for calibrating coaxiality of a tensile testing machine according to the present utility model;

FIG. 2 is an enlarged view of a fixed base of a calibration mechanism of a coaxiality calibration device of a tensile testing machine;

FIG. 3 is a schematic diagram of the inside of a driving slot of a coaxiality calibration device of a tensile testing machine according to the present utility model;

fig. 4 is an enlarged view of a force meter of the coaxiality calibration device of the tensile testing machine.

In the figure: 1 supporting base, 2 motor, 3 hold-in range, 4 synchronizing wheel, 5 mount pad, 6 roof, 7 fixed plate, 8 anchor clamps, 9 telescopic link, 10 anchor clamps down, 11 unable adjustment base, 12 standard axle one, 13 rotation cover, 14 dynamometer, 15 dynamometer ball, 16 dynamometer spring, 17 rotation groove, 18 ball screw, 19 drive slot.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, a coaxiality calibration device of a tensile testing machine comprises a supporting base 1, a driving groove 19 is formed in the supporting base 1, a lower clamp 10 is installed on the upper end face of the supporting base 1, two installation seats 5 are symmetrically arranged on the supporting base 1, a top plate 6 is jointly installed at the upper ends of the two installation seats 5, sliding grooves are formed in each installation seat 5, a ball screw 18 is arranged in each sliding groove, one end of each ball screw 18 penetrates through the installation seat 5 and extends towards the inside of the supporting base 1, the two ball screws 18 are connected through a synchronous mechanism, the synchronous mechanism comprises two synchronous wheels 4, the two synchronous wheels 4 are respectively installed on the two ball screws 18, a synchronous belt 3 is sleeved on the two synchronous wheels 4 together, a motor 2 is arranged in the driving groove 19, the output end of the motor 2 is connected with the input end of the synchronous mechanism, a fixing plate 7 is connected between the two ball screws 18 together, an upper clamp 8 is arranged on the lower end face of the fixing plate 7, the central line of the upper clamp 8 and the central line of the lower clamp 10 are on the same straight line, the upper clamp 8 is clamped with the central line of the lower clamp 10, a standard shaft of the upper clamp 8 is provided with a standard shaft of the two standard shafts 12, the two standard shafts of the standard shafts are sleeved on the standard shafts 12 are arranged far from the standard shafts of the standard shafts, and one end of the standard shafts 12 are far away from the standard shafts are arranged on the standard shafts 12.

The calibrating mechanism comprises a fixed base 11, a rotating groove 17 is formed in the fixed base 11, a rotating ball is clamped in the rotating groove 17, a telescopic rod 9 is arranged on the rotating ball, one end, far away from the fixed base 11, of the telescopic rod 9 is welded with a rotating sleeve 13, a dynamometer 14 is arranged on the rotating sleeve 13, an output shaft of the dynamometer 14 penetrates through the rotating sleeve 13 to extend and install a dynamometer spring 16, and one end of the dynamometer spring 16 is welded with a dynamometer ball 15.

When the utility model is used, firstly, two standard shafts with the same size are respectively clamped on the lower clamp 10 and the upper clamp 8, then the motor 2 is started, the output shaft of the motor 2 drives the ball screw 18 welded on the output shaft to rotate, the synchronous wheel 4 on the ball screw 18 drives the synchronous belt 3 arranged on the synchronous wheel 4 to rotate, the synchronous belt 3 drives the synchronous wheel 4 on the other ball screw 18 to rotate, the synchronous belt 3 drives the two ball screws 18 to synchronously rotate, at the moment, the motor 2 is controlled to adjust the clamp position needing to calibrate the coaxiality, the fixed base 11 of the calibrating mechanism is sleeved on the outer wall of the first standard shaft 12, then the telescopic rod 9 is adjusted to the position needing to be calibrated, then the rotating sleeve 13 is clamped on the second standard shaft arranged in the upper clamp 8, then the rotating sleeve 13 is connected with the telescopic rod 9, one end of the telescopic rod 9 far away from the rotating sleeve 13 is connected with a rotating ball, the rotating groove 17 in the rotating way on the fixed base 11, and the ball 15 arranged at the output end of the rotating sleeve 14 is synchronously rotated on the rotating way, at the second standard shaft, at the moment, the clamp position needing to be calibrated coaxially, the coaxiality is measured by the sliding ball 15 on the second standard shaft, and the lower clamp 8, and the coaxiality of the force measuring meter 14 is detected, and the whole force is measured by the sliding ball 16, and the measuring force is not needed, and the whole force is measured, and the force is adjusted.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (4)

1. The utility model provides a tensile testing machine axiality calibrating device, includes support base (1), its characterized in that: the utility model discloses a standard shaft calibration device, including support base (1), lower anchor clamps (10) have been seted up in the support base (1), the up end of support base (1) is installed down anchor clamps (10), the symmetry is equipped with two mount pads (5) on support base (1), two roof (6) are installed jointly to the upper end of mount pad (5), every sliding tray has all been seted up in mount pad (5), every in the sliding tray all be equipped with ball screw (18), and every the one end of ball screw (18) all runs through mount pad (5) and extends to the inside of support base (1), two connect through synchro mechanism between ball screw (18), be equipped with motor (2) in drive groove (19), the output of motor (2) is connected with synchro mechanism's input, two common threaded connection has fixed plate (7) between ball screw (18), the lower terminal surface of fixed plate (7) is equipped with anchor clamps (8), the card is equipped with second axle in last anchor clamps (8), the outer wall of second axle is gone up and is equipped with calibration device, second axle calibration device is equipped with one end (12) and is kept away from in the standard axle (12).

2. The coaxiality calibration device of a tensile testing machine according to claim 1, wherein: the synchronous mechanism comprises two synchronous wheels (4), the two synchronous wheels (4) are respectively arranged on two ball screws (18), and synchronous belts (3) are sleeved on the two synchronous wheels (4) together.

3. The coaxiality calibration device of a tensile testing machine according to claim 1, wherein: the calibrating mechanism comprises a fixed base (11), a rotating groove (17) is formed in the fixed base (11), a rotating ball is arranged in the rotating groove (17), a telescopic rod (9) is arranged on the rotating ball, one end of the telescopic rod (9), which is far away from the fixed base (11), is welded with a rotating sleeve (13), a force measuring meter (14) is arranged on the rotating sleeve (13), an output shaft of the force measuring meter (14) penetrates through the rotating sleeve (13) to extend and install a force measuring spring (16), and one end of the force measuring spring (16) is welded with a force measuring ball (15).

4. The coaxiality calibration device of a tensile testing machine according to claim 1, wherein: the center line of the upper clamp (8) and the center line of the lower clamp (10) are on the same straight line.