CN201837558U

CN201837558U - Circular disc test specimen centering device

Info

Publication number: CN201837558U
Application number: CN2010202893840U
Authority: CN
Inventors: 祝洪川; 李荣锋; 邝兰翔; 杜丽影; 严龙
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2010-08-12
Filing date: 2010-08-12
Publication date: 2011-05-18
Anticipated expiration: 2020-08-12

Abstract

The utility model discloses a circular disc test specimen centering device which comprises an inner ring which is sheathed on an edge pressing die. An outer ring which is rotatably matched with the inner ring is arranged on the external side of the inner ring. Three short connecting arms are evenly distributed on the outer ring. One ends of the three short connecting arms are respectively hinged on the outer ring and the other ends of the three short connecting arms are respectively hinged with one ends of three long specimen pushing arms. Three equidistant points on the three long specimen pushing arms are respectively hinged on the inner ring. The other ends of the three long specimen pushing arms can be in tangential contact with a circular disc test specimen installed in the center of the edge pressing die and thereby the circular disc test specimen is pushed to a geometrical center in a way of levers, is centered and positioned. According to practices, the device can rapidly center and position the circular disc test specimens with different diameter during formability tests, the problems that the manual positioning is time-consuming and the position accuracy is low can be solved, and the testing efficiency and the testing accuracy can be improved.

Description

Disk sample centralising device

Technical field

The utility model relates to the sheet moulding performance detection tester, refers to a kind of disk sample centralising device particularly.

Background technology

Forming property in thin plate series detects in the test, as in the processs of the test such as the test of Limit Drawing ratio, Limit Drawing load test, the test of system ear, to use the disk sample of different-diameter, the center of circle that must the strict guarantee sample when being placed into the disk sample on the flanging mould with the axle center of flanging mould and punch on same axial line, only so, could guarantee that the geometric configuration after sample is shaped is centrosymmetric specification product.In standard GB/T15825-2008 sample being placed regulation requires the deviation of sample center and punch and blank holder center line to be not more than 0.5mm.Therefore sample being carried out accurate centering location is very important.

Centralising device just must manually be changed in the location that existing location centralising device can only satisfy single diameter specimen when specimen finish changes, therefore be difficult to adapt to the needs of multistage specimen finish centering.As in experiment of Limit Drawing ratio and Limit Drawing load test, the diameter of sample often is divided into 3 to 5 ranks from 85mm to 120mm, and the sample quantities of each diameter has 3 to 6, and tested number is big and need change centralising device frequently by hand.This just needs the centralising device that can adapt to the various sample diameter, to reduce the inefficiency that manual setting sample centering causes, the problem that test period is long.

Summary of the invention

The purpose of this utility model is exactly will provide a kind of can carry out the disk sample centralising device of centering location quick and precisely to different-diameter disk sample on a flanging mould.

For achieving the above object, the disk sample centralising device that the utility model is designed, comprise the inner ring that can be nested with on the flanging mould, it is characterized in that: the inner ring arranged outside has the outer ring that cooperates with its rotation, be evenly equipped with three on the outer ring and connect galianconism, three ends that connect galianconism are hinged on the outer ring respectively, three other ends that connect galianconism respectively with three to push away the long-armed end of sample hinged, three push away three equidistant points of sample on long-armed and are hinged on the inner ring respectively, three push away the long-armed other end of sample and can tangentially contact with the disk sample that is installed in flanging mold center place, locate to geometric center centering thereby promote the disk sample in the lever mode.

Further, described inner ring is the low two-stage ring platform structure in the inboard high outside, and described outer ring slidably or rollably is embedded on the outer ring platform of inner ring.

Further, be evenly equipped with three locating stop pieces on the described inner ring.

The utility model adopts lever principle, changes the relative rotary motion of inside and outside circle into three combined lever mechanism long arm ends with respect to the drawing close or break away from motion of device geometric center, promptly finishes its centering location by pushing away the long-armed promotion to the disk sample of sample.And, after three inside and outside both sides of the edge evenly are set on the inner ring all exceed the locating stop piece of the inside and outside both sides of the edge of inner ring, can satisfy this disk sample centralising device in the location on the flanging mould and bear pressure between the upper and lower flanging mould, anti-thrust sample is long-armed, and pressure-pad-force is excessive to be damaged because of being subjected to, and this locating stop piece also has the effect that inner ring is deviate from the control outer ring simultaneously concurrently.

Adopt disk sample centralising device of the present utility model, can be to disk sample quick centering location in the forming test process of different-diameter series, manually locate length consuming time, problem that positional accuracy is low thereby solved, improved the efficient and the accuracy that detect.

Description of drawings

Fig. 1 is a kind of structural representation of disk sample centralising device;

Fig. 2 is the inner ring structural representation among Fig. 1;

Fig. 3 is the A-A sectional structure synoptic diagram among Fig. 2.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

Disk sample centralising device shown in the figure, comprise the inner ring 1 that can be nested with on flanging mould 6, inner ring 1 arranged outside has the outer ring 2 that cooperates with its rotation, be evenly equipped with three on the outer ring 2 and connect galianconism 3, three ends that connect galianconism 3 are hinged on respectively on the outer ring 2, three other ends that connect galianconism 3 are hinged with three ends that push away sample long-armed 4 respectively, three three equidistant points that push away on the sample long-armed 4 are hinged on respectively on the inner ring 1, three other ends that push away sample long-armed 4 can tangentially contact with the disk sample 7 that is installed in flanging mould 6 centers, locate to geometric center centering thereby promote disk sample 7 in the lever mode.Described inner ring 1 is the low two-stage ring platform structure in the inboard high outside, and described outer ring 2 slidably or rollably is embedded on the outer ring platform of inner ring 1.Be evenly equipped with three locating stop pieces 5 on the described inner ring 1.

During use, disk sample centralising device of the present utility model is placed in external diameter to be slightly less than on the flanging mould 6 of inner ring 1 internal diameter, by locating stop piece 5 this disk sample centralising device and flanging mould 6 are located, make the central axes of inner ring 1, outer ring 2 and flanging mould 6, and the upper surface of outer ring 2 and inner ring 1 and the punch blank holder upper surface of flanging mould 6 are on the same surface level.During positioning action, outer ring 2 clockwise direction are rotated, 3 drives of connection galianconism push away sample long-armed 4 and rotate in the certain angle scope around the hinge on the inner ring 1 clockwise, three push away sample long-armed 4 and will promote disk sample 7 in the mode of lever and move to the geometric center of centralising device, thus the centering location of finishing sample.

Applicable diameter 70～120mm when adopting the disk sample centralising device of example structure, the disk sample of thickness 0.5～3mm.

Claims

1. disk sample centralising device, comprise the inner ring (1) that can be nested with on flanging mould (6), it is characterized in that: inner ring (1) arranged outside has the outer ring (2) that cooperates with its rotation, be evenly equipped with three on the outer ring (2) and connect galianconism (3), three ends that connect galianconism (3) are hinged on respectively on the outer ring (2), three other ends that connect galianconism (3) are hinged with three ends that push away sample long-armed (4) respectively, three three equidistant points that push away on the sample long-armed (4) are hinged on respectively on the inner ring (1), three other ends that push away sample long-armed (4) can tangentially contact with the disk sample (7) that is installed in flanging mould (6) center, locate to geometric center centering thereby promote disk sample (7) in the lever mode.

2. disk sample centralising device according to claim 1 is characterized in that: described inner ring (1) is the low two-stage ring platform structure in the inboard high outside, and described outer ring (2) slidably or rollably are embedded on the outer ring platform of inner ring (1).

3. disk sample centralising device according to claim 1 and 2 is characterized in that: be evenly equipped with three locating stop pieces (5) on the described inner ring (1).