TR201707385A2 - TESTER - Google Patents

Abstract

The present invention relates to a test device for measuring the strength of various materials, in particular materials such as adhesives used on natural or prosthetic teeth or the materials forming the prosthetic teeth or the products formed therefrom. With the present invention, a test device has been developed which includes a rod with different stress test leads at its ends, a movement mechanism for driving this rod and a course-connected load cell for determining the tensile forces formed on the sample. Rod, motion mechanism and load cell can be used jointly for both tests.

Description

DESCRIPTION Tester Technical Area This invention is used on various materials, especially natural or prosthetic teeth. materials such as adhesives or materials that make up prosthetic teeth, or with a test device that allows measuring the strength of the products consisting of them. Prior Art If it is not possible to treat cavities with filling, dental prostheses can be placed in the mouth. placement is the usual practice performed by dentists today. one of the processes. However, due to the limited materials that can be used in the human mouth, the strength of the materials used and the fact that the material bears after taking its external form. It is very important to be able to determine the mechanical values. Because Some samples selected from the produced teeth were subjected to destruction tests. required.

In addition, academic studies on teeth continue and new dental prostheses Studies are carried out on filling formulas with In these new products, natural tooth Abrasion test, how close it is to enamel and its compatibility, It can be measured by tests such as crushing, hot-cold cycles. From these tests then from different angles in order to examine the attrition effect obtained by the tests. The filled tooth or prosthesis must be cut. The success of the said investigations To ensure that the cuts do not leave deep marks on the surface and that as many slices as possible It is very important for the determination of the success of the related filling formula that it can be removed from the tooth section. resources will be provided.

One of the aging studies carried out on the tooth and filling is the hot-cold cycle. that is, the thermal cycle method. This method is the effect of hot and cold substances on the teeth. linear thermal expansion between tooth and restorative material. shows the relationship of the coefficient. Thermal cycle test protocol, in vitro of dental materials It is the most widely used protocol for testing. The main goal of this protocol to imitate the long-term conditions of use of restorative materials. For this purpose The thermal cycle (thermo cyling-thermal cycling) test device used was also previously used manually. Developed to automatically perform aging tests is a device.

Thermal cycle testers consist of a hot and a cold tank. dental Variables of ingested foods and/or liquids so that materials can be tested It is necessary to experiment with heat values. To be tested in the thermal cycle system The desired dental material is poured into the compartments with hot and cold water with the help of a basket. exposed to different temperatures by immersion. This action is automatically repeated over time. The time intervals mentioned can be quite long.

In such cases, the researcher who applies the thermal cycle test can change the test device It may be necessary to leave it open for periods of time. This is to control the device. strengthens.

In document CN203732357U, two bonded together with a dental adhesive It is a tool that allows the strength of the adhesive to be measured by applying tension on the plate. the mechanism is explained.

Purpose and Brief Description of the Invention The object of the invention is to work on a variety of specimens, particularly on natural or prosthetic teeth. materials such as adhesives used or materials that make up prosthetic teeth tensile and shear deformation in specimens containing is the development of a test device that allows the measurement of the forces occurring due to the

With the invention, a rod with different stress test leads at the ends is a rod that moves this rod. depending on the movement mechanism and the tension force on the sample. the stress on the sample, which measures the forces exerted on it A test device incorporating a course-connected load cell that allows the determination of developed. For both tests, the rod, the movement mechanism and the load cell are common. can be used.

Description of Figures Explaining the Invention The forms used to better explain the test device developed with this invention and Figure-1 is the front view of a test device according to the invention.

Figure-2 is the front perspective view of a test device according to the invention.

Figure-3 is the rear perspective view of a test device according to the invention.

Figure-4 is the top view of a test device according to the invention without cladding.

Figure-5 Front perspective of a test device according to the invention without coverings. is the view.

Figure-6 Rear perspective of a test device according to the invention without coverings is the view.

Figure-7 According to the invention, a test device from the top without claddings and chassis is the view.

Figure-8 Exploded from the top of the carriage, rod, ball screw, rails and load cell is the view.

Figure-9 Rear perspective of carriage, tie rod, ball screw, rails and load cell exploded view.

Figure-10 Side view of carriage, rod, ball screw, rails and load cell.

Definitions of Invention Elements In order to better explain the test device developed with this invention, parts and parts are numbered and the corresponding number of each number is given below. 1. Tester 2. Movable pull end 3. Shear tip 4. Rod . load cell 6. Car 7. Ball screw 8. Engine 9. Linear Guide . Encoder 11. Limit switch 12. Fixed Pull end 13. Vise 14. Pull fixing table . height adjuster 16. Chassis 17. Emergency stop button Detailed Description of the Invention Adhesives used in various examples, especially on natural or prosthetic teeth In samples containing materials such as prosthetic teeth or materials forming prosthetic teeth, both measuring the forces due to both tensile and shear deformation The subject of the invention test device (1), which provides - a tensile strain causing tensile deformation to be applied on a first sample - a shear deformation on a second sample shearing movable tip(3), - a rod (4) extending between the movable pulling end (2) and the shearing end (3), - the rod (4), the rod (4) itself, to produce tension or shear deformation a motion mechanism that moves along its stretch, - traction on the sample created by the movement mechanism, or The route (4) is connected to measure the force on the sample as a result of shear. a load cell (5) contains. The test device (1), which is the subject of the invention, interacts with a sample and tie rod (4) and track (4) with ends on which a test can be carried out Thanks to the movement mechanism and the load cell (5), two different tests can be performed in a common way. movement mechanism and load cell (5).

In a preferred embodiment of the invention, the mechanism of action is at least one route connected to the route (4). The carriage (6) is at least one that interacts with the grooves on the carriage (6) and runs parallel to the route (4). a ball screw (7) running parallel to the track (4) with at least one motor (8), which rotates the ball screw (7), and comprising at least one linear guide (9) that guides the carriage (6).

In order to precisely control the amount of mechanical stress and pressure created, the position of the trolley (6) must also be determined precisely. For this, As the motor (8) data can be used, an encoder (10) in contact with the ball screw (7) The measurement data provided by the company can also be used.

In addition to precisely determining and monitoring the position of the trolley (6), (6) outside the effective operating range of the load cell (5) or outside the safe operating range In order to prevent There may also be a limit switch (11) at its limits. These limit switches (11) are preferably When the car (6) reaches the relevant limit, it touches the car (6) and hits the engine (8) are switches that send a signal to stop or run in reverse.

In a preferred embodiment of the invention, the load cell (5) is connected to the trolley (6). Like this, while the carriage (6) is moved by the motor (8) via the ball screw (7) The load cell (5) and therefore the rod (4) to which the load cell (5) is attached also move. it will be carried. The load cell (5) route (4) transmits the motion provided by the motor (8) on the other hand, it measures the force on the rod (4) due to the sample.

The test device (1) is a mobile device that keeps the samples on the line determined by the rod (4). a fixed draw end (12) corresponding to the pulling end (2) and a shearing end (3) It also includes a vise (13). An example on which tensile stress will be applied has both the movable draw end (2) and It is connected to the fixed pulling end (12) and is connected to the fixed pulling end of the rod (4) by the movable pulling end (2). With its movement in the direction that will move the tip (12) away from each other, the sample will not be deformed. is being done. Meanwhile, the load cell (5) is formed by the sample on the rod (4). measures force. Thus, the stress on the sample can be determined, for example, Elastic nerve deformation and rupture point can also be determined.

In a preferred embodiment of the invention for testing adhesives, mutual a pull rod attached to the movable pull end (2) and the shearing end (3) There is also a fixing plate (14). On the pulling fixing table (14), There are edges facing each other and overlapping each other. These edges After bonding to each other with the adhesive to be tested, the adhesive strength can be tested as described above. If it is an example on which shear deformation will be applied, clamp (13) It is fastened and the fixed pulling end (12) of the rod (4) moves in the direction of the vise (13). the sample is deformed. Meanwhile, the load cell (5) is on the rod (4). It measures the force created by the Thus, the stress on the sample As can be determined, for example elastic nerve deformation and breaking point can be determined.

The vise (13) preferably comprises at least one fixed part and one movable part. Sample, between the fixed part and the moving part, sitting on the fixed part After it is placed, it is fastened by means of the moving part. For example, in order to fix the desired part of the route (4) correspondingly, In addition to the vise (13), there is also a height adjustment apparatus (15). Height By changing the height position of the sample attached to the vice (13), the adjustment apparatus (15) It can support the sample in different positions.

In order for the test device (1) to work properly, the fixed pull tip (12) and the positions of the vise (13) must be maintained. Fixed pull-end for this (12) and vise (13) under the influence of the rod (4) by the specimens to be tested It is carried on a rigid chassis under the forces that can be produced.

An emergency stop button (17) can also be found on the test device (1).

Claims (8)

REQUESTS . It includes a tensile tip (2) that allows tensile deformation to be applied on a first sample and a shear tip (3) to apply shear deformation to a second sample, allowing two different tests to be performed - between the movable tensile tip (2) and shear tip (3). an extending rod (4), - a motion mechanism that moves the rod (4) along its own extension of the rod (4) to create a tension or shear deformation, - a track to measure the force on the sample as a result of tension or shear created on the sample by the movement mechanism (4) a test device (1) characterized by a connected load cell (5). . At least one trolley (6) connected to the track (4), at least one ball screw (7) interacting with the grooves on the trolley (6) and extending parallel to the track (4), at least one motor (8) which rotates the ball screw (7) A test device (1) as in Claim 1, characterized by a motion mechanism that includes at least one linear guideway (9) running parallel to the track (4) and guiding the trolley (6). . A test device (1) as in Claim 2, characterized by an encoder (10) in contact with the ball screw (7). . A test device (1) as in Claim 2, characterized by a limit switch (11) located at the limits of the operating range of the trolley (6). . A test device (1) as in Claim 2, characterized by the load cell (5) connected to the trolley (6). 6. A test device (1) as in Claim 1, characterized by a fixed pulling end (12) corresponding to the movable pulling end (2), holding the relevant sample on the line determined by the rod (4). 7. A test device as in Claim 6, characterized by a tensile fixation table (14) attached to the reciprocally movable pulling end (2) and shearing end (3), each with 5 facing and overlapping edges. 8. A test device (1) as in Claim 1, characterized by a vise (13) corresponding to the shear tip (3), holding the relevant sample on the line determined by the rod (4).