JP2854184B2 - Automatic tensile tester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic tensile tester, and more particularly, to an automatic tensile tester for testing a test piece from a chuck thereof .
An automatic tensile testing machine capable of performing eliminate efficiently.

[0002]

2. Description of the Related Art Generally, before a manufactured thin steel sheet is shipped as a product, a test piece is sampled from the steel sheet, the test piece is mounted on a chuck of an automatic tensile tester, and a tensile test is performed. And so on.

[0003] When performing the tensile test, the shape, dimensions and test method of the test piece are specified by JIS and the like. A test piece is prepared based on the specifications, and after measuring the size, the test piece is measured. Is supplied to and attached to a chuck of a tensile tester, and a test piece that has been broken after the end of the test is removed (discharged).

[0004] In the automatic tensile test apparatus, a series of operations for transporting a test piece whose dimensions have been measured, mounting the test piece on a chuck, and removing the test piece after the test are automated.

Conventionally, the above series of operations have been performed by one robot hand, and the robot hand has been basically based on a straight-forward operation. The robot hand is moved to the front of the chuck, and further, the test piece is mounted by linearly moving forward from the position in the direction of the chuck, and after the tensile test is completed, the test piece is again gripped by the robot hand, A series of operations were repeated in which the test piece was linearly retracted to remove the test piece, and then returned to the initial position to receive the next test piece.

[0006]

However, when the above-described series of operations are performed by one robot hand based on the straight traveling operation as described above, there is a problem that the operation efficiency is extremely poor.

The present invention has been made to solve the above-mentioned conventional problems, and discharges a test piece after an automatic tensile test.
It can be efficiently performed work, and to provide automatic tensile testing equipment <br/>.

[0008]

SUMMARY OF THE INVENTION The present invention provides a chuck fixed at a predetermined position for holding and pulling both ends of a test piece, and for removing the test piece after the test from the chuck.
In an automatic tensile test apparatus provided with a discharge robot hand, the discharge robot hand is pivotally positioned at a base end thereof in parallel with an axial direction of a test piece mounted on the chuck and near the chuck. The tip is centered on the axis
An arm portion pivotable at a predetermined radius, the handed <br/> times operation of the arm portion, clamping position located et al of the chuck a test piece gripped at its leading end portion, along an arc of predetermined radius The object has been achieved by assuming that the robot hand is a direct robot hand capable of directly discharging.

[0009] The present invention is also in the automatic tensile testing machine, by the turning action of the arm portion to which the direct robot hand has a moving direction when discharging the specimen directly al placed sandwiching position of the chuck, the test The above-mentioned object is also achieved by making the opening and closing directions of the chucks orthogonal when holding or releasing the piece.

[0010]

[0011]

According to the present invention, the chuck near the automatic tensile testing machine, which can pivot about parallel pivot axes in the axial direction of the test piece to be attached to the chuck, handed tip at a predetermined radius
By positioning the robot hand having an arm portion for rotating the work <br/> industry for discharging the test piece after the test from the chuck, the arm portion to the single with the test piece held by the distal portion
It becomes possible to carry out only by turned-handed, it is possible to efficiently performed discharge operations of the automatic tensile test after the test piece.

When a plurality of robot hands are provided and at least one of them is a rotatable robot hand, each operation such as transporting, mounting, and discharging a test piece is shared by each robot hand. Is possible,
Similarly, work efficiency can be improved.

When the robot hand is used for mounting and discharging a test piece and one of the two can be turned, for example, the next test piece is transported during the test, and the robot hand is placed near the chuck. By waiting, the preparation for mounting the test piece for the next test can be completed, so at the same time when the work of removing the test piece after the test is completed, the test piece for the next test is Since it is possible to mount the device, the work efficiency can be further improved.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic partial perspective view showing an essential part of an automatic tensile test apparatus according to an embodiment of the present invention, together with its operation.

The automatic tensile tester of the present embodiment has a test piece T
Upper and lower chucks 10A and 10B (hereinafter, both chucks are collectively referred to simply as chuck 10) for holding the upper and lower ends of the test piece T in the axial direction (vertical direction in the figure). Equipped,
In the vicinity of the chuck 10, a discharge robot hand 14 that can be turned by a turning drive unit 12 is provided.

The discharging robot hand (direct robot hand) 14 is fixed to the lower end of a turning shaft 12A of the turning drive unit 12 which is parallel to the axial direction of the test piece T mounted on the chuck 10. , Around the pivot axis,
The end has an arm portion 14B that can pivot with a predetermined radius . Therefore, the ejection robot hand 14 has
The base portion 14B is capable of turning about 90 ° in the horizontal direction at the predetermined radius around the turning shaft 12A at its base end.

[0018] In addition, the discharge for the robot 14, the Architect
Has a pair of claws 14A at the distal end of the arm portion 14B, the
The claw 14A is a circle having the predetermined radius centered on the turning shaft 12A.
When turning to the position shown by the two-dot chain line in the figure along the arc , the claw 14A can hold the broken portion of the test piece T mounted on the chuck 10.

Further, in the automatic tensile test apparatus of the present embodiment, a mounting robot for transporting and supplying the test piece T having undergone a predetermined measurement at the dimension measuring position shown on the left end side in FIG. A hand 16 is provided, and the mounting robot hand 16 receives the test piece T in a horizontal state,
Retreats in the direction of arrow A, stops at a predetermined position,
At this position, the test piece T is rotated by 90 ° in the direction of arrow B to a vertical state, and then moved in the direction of arrow C to transport the test piece T to the front of the chuck 10 and advance in the direction of arrow D. The test piece T can be supplied and mounted on the chuck 10. The mounting robot hand 16 can operate in the direction opposite to the directions indicated by the arrows A to D.

Next, the operation of this embodiment will be described.

First, the mounting robot hand 16 grips the test piece T in the horizontal state where the dimension measurement is completed at the dimension measurement position, retreats in the direction of arrow A and stops at a predetermined position, After rotating T 90 degrees in the direction of arrow B to make it vertical, it moves in the direction of arrow C to the front position of the chuck, and waits at that position.

The mounting robot hand 16 is
While the robot is waiting at the front position, the previous tensile test is performed on the test piece. When the tensile test is completed, the arm portion 14B of the discharging robot 14 moves the pivot axis to the middle.
The claw 14A at the tip of the heart draws an arc of a predetermined radius
From the solid line position to the position indicated by the two-dot chain line as shown in FIG.
After clamping the broken test piece T after the test at 4A, the pinion 14A is opened and the test piece T is dropped in the direction of arrow F while the claw 14A is opened while the clamped specimen T is rotated and recovered to the original position indicated by the solid line. And stand by at the solid line position.

After the test piece T after the test is removed from the chuck 10, the mounting robot 16 in a standby state moves forward in the direction of the chuck 10, and new test pieces are placed on the upper chuck 10 A and the lower chuck 10 B. Attach T. When the test piece T is mounted, a tensile test is started on the test piece T, and the mounting robot 16 retreats to the original standby position, and then follows the direction opposite to the direction at the time of supplying the test piece T to measure the size. Return to the measurement position, hold the next test piece,
The same operation as described above is performed to transport the test piece T to the front position of the chuck 10 again and wait.

As described above, the robot hand 16 for supplying and mounting the test piece T and the robot hand 1 for discharging the test piece T are provided.
By providing 4 and above, the next test piece can be mounted on the chuck immediately after the previous tensile test is completed, and the next tensile test can be started. Therefore, the tensile test is continuously performed with high efficiency. It became possible.

Further, according to the present embodiment, since the robot hand 14 for elimination can be arranged on the side of the chuck 10, even if a strain gauge is installed behind the chuck 10, for example, the test piece T Can be easily and reliably performed.

Although the present invention has been specifically described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

[0027]

Further, the automatic tensile test apparatus of the present invention may be provided with a direct type robot hand having a turning function for discharging, and is not particularly limited as long as the total number of robot hands is one or more.

[0029]

Further, the discharging robot hand may have two pairs of upper and lower claws at the tip end thereof, and each of the upper and lower claws may separately hold the broken test piece. Good.

Further, when two pairs of upper and lower claws are provided as described above, two independent robot hands may be configured to have upper claws and lower claws respectively at the tips.

[0032]

As described above, according to the present invention, when performing an automatic tensile test, it is possible to efficiently perform an operation of discharging a test piece after the test .

[Brief description of the drawings]

FIG. 1 is a schematic partial perspective view showing a main part of an automatic tensile test apparatus according to one embodiment of the present invention.

[Explanation of symbols]

 Reference numerals 10, 10A, 10B: chuck, 12: turning drive unit, 12A: turning shaft, 14: robot hand for discharging, 14A: claw, 16: robot hand for mounting, T: test piece.

Claims (2)

(57) [Claims] 1. An automatic tensile tester having a chuck fixed at a predetermined position for holding and pulling both ends of a test piece and a robot hand for discharging the test piece from the chuck after the test. in the discharge robot hand, about a pivot axis located in the vicinity of and the chuck parallel to the axis direction of the test piece is mounted on the chuck at its proximal end, the distal end a predetermined
An arm portion pivotable in radius, by turning operation of the arm portion, clamping position located et al of the chuck a test piece gripped at its leading end portion, is directly discharged capable made along an arc of predetermined radius Automatic tensile test equipment characterized in that it is a direct robot hand. 2. A method according to claim 1, wherein the pivoting movement of the direct robot arm the hand has, the moving direction at the time of discharging the specimen directly al placed sandwiching position of the chuck, the specimen clamping or it An automatic tensile test apparatus, wherein the opening and closing directions of the chuck when releasing are perpendicular to each other.