TWM619350U - Material testing machine - Google Patents

Abstract

This creation provides a material testing machine including a working base, a lifting device, a plurality of material holding devices, a plurality of force sensing devices and a control device. The lifting device is connected to the working base and includes two linear transmission elements and a driven element. The two terminals of the driven element are connected to the two linear transmission elements and move along the extension direction of the two linear transmission elements. The material holding device is connected to the working base and is used for fixing a plurality of objects to be tested. A plurality of force sensing devices are connected to the driven elements of the lifting device, and are facing the multiple material holding devices, and are used to provide power to the objects to be measured through the lifting device to generate multiple force signals. The control device is electrically coupled to the lifting device and a plurality of force sensing devices, and is used for controlling the operation of the two linear transmission elements and receiving and processing a plurality of force signals.

Description

Material testing machine

This creation is related to the material testing machine, especially a material testing machine that performs multiple tests on the DUT at the same time.

The material testing machine is used to test the object to be tested to obtain the material characteristics of the object to be tested. At present, the material testing machine tests one object to be tested at a time. When there are multiple objects to be tested, multiple material testing machines are required. Experiments are performed efficiently, but multiple material testing machines require a larger working environment and require more manpower, which increases space and manpower costs. However, if a single material testing machine is used for testing, it will take several times the time. Therefore, the current material testing machine cannot satisfy the efficient test.

In view of the above-mentioned shortcomings, the material testing machine created by this invention can test multiple DUTs simultaneously by a single unit, so as to reduce space usage and improve test efficiency.

In order to achieve the above-mentioned purpose, this creation provides a material testing machine including a working base, a lifting device, a plurality of material holding devices, a plurality of force sensing devices, and a control device. The working base includes a working surface. The lifting device is connected to the working base and includes two linear transmission elements and a driven element. Two linear transmission elements extend upward from the working surface. The two terminals of the driven element are connected to the two linear transmission elements and move along the extension direction of the two linear transmission elements. The material holding device is connected to the working base and is located on the working surface, and is used to fix a plurality of objects to be tested. A plurality of force sensing devices are connected to the driven elements of the lifting device, and are facing the multiple material holding devices, and are used to provide power to the objects to be measured through the lifting device to generate multiple force signals. The control device is electrically coupled to the lifting device and a plurality of force sensing devices, and is used for controlling the operation of the two linear transmission elements and receiving and processing a plurality of force signals.

In this way, the material testing machine created by this invention can simultaneously test multiple DUTs through lifting devices, multiple material holding devices, multiple force sensing devices, and control devices, so as to reduce operating labor, cost, and space usage.

In the following, the technical content and features of this creation are explained in detail by using several examples listed in conjunction with the drawings. The directional adjectives such as "upper", "lower", "top" and "bottom" mentioned in the content of this manual , Is only an illustrative description based on the normal direction of use, and is not intended to limit the scope of claims.

As shown in FIG. 1, the material testing machine 10 of the present invention is used to test the material properties of the test object 30 by means of stretching, compression, or puncture, and then the composition and operation of the material testing machine will be described in detail.

The material testing machine 10 includes a working base 11, a lifting device 13, five material holding devices 15, five force sensing devices 17 and a control device 19. In other embodiments, the number of material holding devices and force sensing devices may be less or more, less such as two to four, and more such as five or more.

The working base 11 includes a working surface 111. The working base 11 is used for setting up or installing in a working environment. The working surface 111 generally refers to the top surface of the working base 11 to facilitate visual inspection and operation by personnel.

The lifting device 13 is connected to the working base 11 and includes two linear transmission elements 131 and a driven element 133. The two linear transmission elements 131 extend upward from the working surface 111 and are arranged at intervals. The two terminals 135 and 136 of the driven element 133 are connected to the two linear transmission elements 131, and the driven element 133 moves along the extending direction of the two linear transmission elements. Wherein, the movement of the driven element 133 is driven by the two linear transmission elements 131. In this embodiment, the linear transmission element 131 is a ball screw.

The five material holding devices 15 are connected to the working base 11 and are located on the working surface 111 to fix the five objects 30 to be tested. Among them, the five material holding devices 15 have the same structure, and the material holding device 15 may be a supporting structure, a clamping (occluding) structure or other structures for fixing or carrying the object 30 to be measured.

Five force sensing devices 17, connected to the driven element 133 of the lifting device 13, and facing the five material holding devices 15, and used to provide power to a plurality of test objects 30 through the lifting device 13 to generate five force signals . The five force sensing devices 17 have the same structure and correspond to the five material holding devices 15 one-to-one.

The force sensing device 17 is arranged at intervals from the terminal 135 of the driven element 133 to the extending direction of the terminal 136. The interval setting can prevent the force sensing device 17 from colliding during the test and give the force sensing device 17 enough space for testing.

The force sensing device 17 includes a load cell 171, an adapter 173, and a test head 175. The load cell 171 is connected to the driven element 133 and includes a top surface 1711 and a bottom surface 1713. The top surface 1711 faces the driven element 133. The bottom surface 1713 faces the adapter 173. The adapter 173 connects the load cell 171 and the test head 175. The load cell 171 is used to generate multiple force signals. The test head 175 is used for contacting the test object 30.

The bottom surface 1713 of the load cell 171 is flush and parallel to the working surface. In this way, the position of the load cell 171 is approximately flush. Therefore, when the five test objects 30 are subsequently tested simultaneously, they can be approximately at the same test position, but not limited to being flush.

The driven element 133 includes five connectors 1331 for connecting the load cell 171 of the force sensing device 17. The load cell 171 can be installed, detached or replaced through the connector 1331.

The control device 19 is electrically coupled to the lifting device 13 and a plurality of force sensing devices 17, and is used for controlling the operation of the two linear transmission elements 131 and receiving and processing a plurality of force signals. Wherein, the received power signal can be transmitted through a transmission line or wirelessly. When the wireless transmission is performed, it means that the force sensing device 17 and the control device 19 have corresponding communication components for transmitting and receiving the force signal. The processing is performed by the processor of the control device 19.

The composition and structure of the material testing machine 10 of the present invention have been described above, and then the operation thereof will be described.

This embodiment takes the compression test as an example. During operation, the object 30 to be tested is first placed or fixed on the material holding device 15, and then the lifting device 13 is driven through the control device 19, so that the driven element 133 contacts the object to be tested downwards. 30. Then the test object 30 is compressed downwards, the contact and compression allow the load cell 171 to sense the force change, and a corresponding force signal is generated. Finally, the test object 30 is compressed to break or damage, and the test is stopped.

Since this creation is to test five DUTs simultaneously, this creation can improve the efficiency of the experiment. In addition, the time for the five test objects 30 to break or damage will vary, but this creation can continuously test the unbroken or damaged test objects 30 through the lifting device. Therefore, the test will not be affected by the test objects. 30, and continue to complete all trials.

The part of the force signal is shown in Figure 2. Figure 2 represents the relationship between the force and displacement induced by one of the load cells. In Figure 2, the X axis represents the variable displacement of the object to be measured, and the Y axis represents the force to be measured. degree. When the force sensing device 17 touches the test object 30, the load cell 171 will sense the force and generate a force signal. With the compression process, the force and displacement will gradually change until the test object 30 is broken or damaged. . The control device 19 receives the force signal and processes it into the signal diagram of FIG. 2. In this way, each test object 30 has a corresponding signal diagram for understanding the characteristics of the test object 30, that is to say, each force sensing device of this creation 17 can independently sense and test the object 30 to be tested, and can work independently without being affected by other force sensing devices 17.

The above describes the examples of the compression test of the object to be tested, but the material testing machine created by this invention can also perform tensile or puncture tests. The puncture test is similar to the above-mentioned embodiment, and the test procedure is moved from top to bottom, so I won’t repeat it. . The tensile test is shown in Figure 3. The difference between the material testing machine 10 and the embodiment of Figure 1 lies in the material holding device 15a and the test head 175a of the force sensing device 175. For tensile testing, the material holding device 15a needs to be replaced. A structure with a clamping or biting function is formed to clamp or bite one end of the object 30 to be tested. The test head 175a also needs to be replaced with a structure with a clamping or biting function to clamp or bite the other end of the test object 30.

During the test, the control device 19 drives the driven element 133 of the lifting device 13 to rise up until the test object 30 is completely broken or damaged. During the rising process, the load cell 171 will sense changes in force and displacement. The corresponding power signal can be received and processed by the control device 19.

In this way, the material testing machine of this creation can test multiple samples, test pieces or materials at the same time to improve efficiency, and reduce space usage and personnel requirements.

Finally, it must be explained again that the constituent elements disclosed in the foregoing embodiments of this creation are only examples, and are not intended to limit the scope of patents of this creation. For example, any simple structural modifications or changes made without going beyond the spirit of this creation, or Replacement with other equivalent components should still fall within the scope of the patent application for this creation.

10: Material testing machine 11: Working base 111: working surface 13: Lifting device 131: Linear transmission element 133: driven element 1331: connector 135,136: Terminal 15: Material holding device 15a: Material holding device 17: Force sensing device 171: load element 1711: top surface 1713: Bottom 173: Adapter 175: Test head 175a: Test head 19: Control device 30: DUT

Fig. 1 is a schematic diagram of an embodiment of the material testing machine of the present invention. Fig. 2 is a diagram showing the relationship between force and displacement obtained by the material testing machine of Fig. 1 for the test results of one of the test objects. Fig. 3 is a schematic diagram of another embodiment of the material testing machine of the present creation in Fig. 1.

10: Material testing machine

11: Working base

111: working surface

13: Lifting device

131: Linear transmission element

133: driven element

1331: connector

135,136: Terminal

15: Material holding device

17: Force sensing device

171: load element

1711: top surface

1713: Bottom

173: Adapter

175: Test head

19: Control device

30: DUT

Claims (6)

A material testing machine, including: A working base, including a working surface; A lifting device is connected to the working base, and includes two linear transmission elements and a driven element. The two linear transmission elements extend upward from the working surface. The two terminals of the driven element are connected to the two linear transmission elements along Move along the extension direction of the two linear transmission elements; A plurality of material holding devices connected to the working base and located on the working surface, and used to fix a plurality of objects to be tested; A plurality of force sensing devices, connected to the driven element of the lifting device, and holding the device for the plurality of materials, and used to provide power to the plurality of objects to be measured through the lifting device to generate a plurality of force signals; and A control device is electrically coupled to the lifting device and the plurality of force sensing devices, and used for controlling the operation of the two linear transmission elements and receiving and processing the plurality of force signals. The material testing machine according to claim 1, wherein the plurality of force sensing devices are arranged at intervals from one of the two terminals of the driven element to the other extending direction. The material testing machine according to claim 2, wherein each of the plurality of force sensing devices includes a load cell, an adapter, and a test head, and the load cell is connected to the driven element and includes a top Face and a bottom face, the top face faces the driven element, the bottom face faces the adapter, the adapter connects the load cell and the test head, the load cells of the plurality of force sensing devices are used to generate The plurality of force signals, the test heads of the plurality of force sensing devices are used for contacting the plurality of objects to be tested. The material testing machine according to claim 3, wherein the bottom surfaces of the load cells of the plurality of force sensing devices are flush and parallel to the working surface. The material testing machine according to claim 2, wherein the driven element includes a plurality of connectors for connecting the load cells of the plurality of force sensing devices. The material testing machine according to claim 1, wherein each of the two linear transmission elements includes a ball screw.

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