Detection clamp for dental ceramic performance test and universal testing machine

Abstract

The utility model relates to the field of dental ceramic detection, in particular to a detection clamp and a universal testing machine for dental ceramic performance testing, the universal testing machine comprises the detection clamp, a detection pressure head and a lifting arm, the detection clamp is arranged below the detection pressure head through a base, and the lifting arm is arranged below the detection pressure head. The detection pressure head is arranged at intervals opposite to the applied force of the detection clamp, the detection pressure head can move towards the detection clamp, and the lifting arm is connected with the lifting pressure head and drives the lifting pressure head to move. According to the utility model, the ceramic to be tested is limited through the supporting seat and the clamping groove plate, and the pressure head is matched to detect the hardness, toughness and other properties of the ceramic material, so that comparison is facilitated to obtain the ceramic material with the best quality for dental ceramic performance test.

Description

Technical Field

[0001] The utility model relates to the field of dental ceramic detection, in particular to a detection fixture and a universal testing machine for dental ceramic performance testing. Background Art

[0002] Ceramic materials have good heat resistance, high hardness, excellent chemical corrosion resistance and various related physical properties, which make them widely used in various fields. Ceramic materials are also needed in dental restorations. The hardness and toughness of ceramic materials produced under different price conditions and methods vary. In order to ensure the strength after restoration, dental restorations have usage standards for the hardness and toughness of the ceramic materials used.

[0003] There is no effective testing fixture for testing the strength and toughness of ceramics in the prior art. Most ceramic materials are produced using established processes and conditions. Therefore, it is impossible to compare which processes and conditions the same ceramic materials use to achieve the best quality. Utility Model Content

[0004] The main purpose of the utility model is to overcome the shortcomings of the prior art and provide a testing fixture and a universal testing machine for dental ceramic performance testing, which can limit the ceramic to be tested by a support seat and a slot plate, and cooperate with a pressure head to test the hardness and toughness of the ceramic material, so as to facilitate comparison to obtain the best quality ceramic material.

[0005] The utility model adopts the following technical solutions:

[0006] A detection fixture for testing the performance of dental ceramics is arranged on a universal testing machine for detecting the performance of dental ceramics, comprising a base, two support seats and two slot plates, wherein the base is arranged on the universal testing machine, the two support seats can be slidably arranged on the base, the two support seats comprise a sliding plate and a support plate, the sliding plate can be slidably arranged on the base, the support plate is arranged on the sliding plate, the support plates of the two support seats are arranged in parallel and spaced apart, so that a force-applying interval is formed between the two support seats, the two slot plates are respectively arranged on the support plates of the two support seats, the slot plates are provided with slots, the slot notches on the two slot plates are arranged relatively, so that the two slots surround a complete sample slot, and the sample slot is connected to the force-applying interval.

[0007] Furthermore, an adjustment hole is provided on the sliding plate, an adjustment bolt is arranged in the adjustment hole, a slide groove is provided on the base, the adjustment bolt passes through the adjustment hole and the slide groove and cooperates with the nut to lock or loosen the support seat, and when the two support seats slide, the support plates of the two support seats remain parallel and the top ends of the two support plates are located on the same horizontal plane.

[0008] Furthermore, a cut surface inclined upward is formed on the top of the support plate toward the force-applying interval side, so that a narrow strip-shaped support portion is formed on the top of the support plate, and the width of the narrowest part of the support portion is 0.5 mm to 2 mm.

[0009] Furthermore, the sliding plate is horizontally arranged, the supporting plate is vertically arranged on one side of the sliding plate, the supporting plates of the two supporting seats are adjacently arranged and the two supporting plates are parallelly spaced to form the force application interval.

[0010] Furthermore, the slot plate includes a horizontal plate and a vertical plate, the vertical plate is arranged on one side of the horizontal plate, the slot is opened on the horizontal plate, the vertical plate is provided with a fixing through hole, the fixing through hole is provided with a fixing bolt, and the support plate is provided with a fixing screw hole adapted to the fixing through hole, the fixing bolt passes through the fixing through hole and is threadedly connected with the fixing screw hole to set the slot plate on the support plate.

[0011] Furthermore, the card slot is a rectangular slot structure newly adapted to the sample to be tested.

[0012] Furthermore, the base includes a slide seat and a mounting platform, the slide seat is arranged on the mounting platform, the support seat can be slidably arranged on the slide seat, and the mounting platform is connected to the universal testing machine.

[0013] Furthermore, scale lines are arranged on the outer side wall of the base.

[0014] A universal testing machine comprises a detection fixture, a detection pressure head and a lifting arm as described above, wherein the detection fixture is arranged below the detection pressure head through a base, the detection pressure head is arranged at a distance from the detection fixture, and the detection pressure head can move toward the detection fixture, and the lifting arm is connected to and drives the lifting pressure head to move.

[0015] Furthermore, the detection pressure head includes a pressure head portion and a connecting portion, the connecting portion is provided with a socket, the pressure head portion is arranged on the connecting portion, and the connecting portion is detachably arranged on the lifting arm through the socket so that the pressure head portion faces the detection fixture.

[0016] From the above description of the utility model, it can be seen that compared with the prior art, the beneficial effects of the utility model are:

[0017] First, the position of the sample to be tested is limited by the sample slot surrounded by the two card slots, and the sample to be tested is tested with the pressure head. The pressure head can press the sample to be tested on the sample slot through the force interval to detect the hardness and toughness of the sample to be tested. The fixture has a simple structure and is easy to operate.

[0018] Second, through the cooperation of the sliding plate and the sliding groove, the distance between the two card slots can be adjusted, thereby adjusting the size of the sample slot surrounded by the two card slots, which can be suitable for samples of different sizes to be tested, thereby improving the application range of the fixture.

[0019] Third, through the sharp support part, the force area of ​​the sample to be tested on the fixture is reduced, the pressure is increased, the force is more concentrated, the test is closer to the actual use situation, and the accuracy of the test results is improved.

[0020] Fourthly, the slot plate can be detachably arranged by fixing bolts, and can be replaced separately when the slot plate is worn, and slot plates with different slot sizes can also be replaced, further improving the application range of the clamp.

[0021] Fifth, the size of the force interval between the two support plates can be measured through the scale lines set on the outer wall of the base, which can accurately adapt to the size of the sample to be tested, making the adjustment of the support base more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial structural schematic diagram of a specific implementation method of the utility model;

[0023] Figure 2 It is a schematic diagram of the overall structure of the detection fixture of the utility model;

[0024] Figure 3 It is a schematic diagram of the overall structure of the support seat of the utility model;

[0025] Figure 4 It is a schematic diagram of the overall structure of the card slot plate of the utility model;

[0026] Figure 5 It is a schematic diagram of the overall structure of the detection pressure head of the utility model.

[0027] In the figure: 1. detection fixture, 10. base, 100. slide seat, 101. mounting table, 102. mounting part, 103. pin hole, 104. scale line, 105. slide groove, 11. support seat, 110. sliding plate, 111. support plate, 112. adjusting bolt, 113. support part, 12. slot plate, 120. slot, 121. horizontal plate, 122. vertical plate, 123. fixing bolt, 13. force interval, 2. detection pressure head, 20. pressure head, 21. connecting part, 22. socket, 3. lifting arm. DETAILED DESCRIPTION

[0028] The present invention is further described below through specific implementation methods.

[0029] Reference Figures 1 to 5The utility model discloses a detection fixture and a universal testing machine for testing the performance of dental ceramics. The universal testing machine comprises a detection fixture 1, a detection pressure head 2 and a lifting arm 3. The detection fixture 1 is arranged below the detection pressure head 2. The detection pressure head 2 can move toward the detection fixture 1. The lifting arm 3 is connected to and drives the lifting pressure head 2 to move.

[0030] The detection fixture 1 includes a base 10, two support seats 11 and two slot plates 12. The base 10 is arranged on a universal testing machine. The two support seats 11 can be slidably arranged on the base 10. The two support seats 11 include a sliding plate 110 and a support plate 111. The sliding plate 110 can be slidably arranged on the base 10. The support plate 111 is arranged on the sliding plate 110. The support plates 111 of the two support seats 11 are arranged in parallel and spaced apart so that a force-applying interval 13 is formed between the two support seats 11. The two slot plates 12 are respectively arranged on the support plates 111 of the two support seats 11. The slot plate 12 is provided with a slot 120. The slots 120 on the two slot plates 12 are arranged relatively to each other so that the two slots 120 surround a complete sample slot, and the sample slot is connected to the force-applying interval 13.

[0031] The base 10 includes a slide 100 and a mounting platform 101, the slide 100 is arranged on the mounting platform 101, the support seat 11 is slidably arranged on the slide 100, the mounting platform 101 is connected to the universal testing machine, a mounting portion 102 is formed at the bottom of the mounting platform 101, a pin hole 103 is opened on the mounting portion 102, a latch is arranged in the pin hole 103, and the base 10 is detachably arranged below the detection pressure head 2 through the pin hole 103 and the latch. A scale line 104 is arranged on the outer wall of the slide 100.

[0032] The sliding plate 110 is provided with an adjustment hole, in which an adjustment bolt 112 is arranged, and the sliding seat 100 is provided with a slide groove 105. The adjustment bolt 112 passes through the adjustment hole and the slide groove 105 and cooperates with the nut to lock or loosen the support seat 11. When the two support seats 11 slide, the support plates 111 of the two support seats 11 remain parallel and the top ends of the two support plates 111 are located on the same horizontal plane. The top of the support plate 111 is formed with an inclined upward section toward the side of the force-applying interval, so that a narrow strip-shaped support portion 113 is formed on the top of the support plate 111, and the width of the narrowest part of the support portion 113 is 0.5mm to 2mm. The sliding plate 110 is horizontally arranged, and the support plate 111 is vertically arranged on one side of the sliding plate 110. The support plates 111 of the two support seats 11 are arranged adjacent to each other and the two support plates 111 are parallel and spaced to form the force-applying interval 13.

[0033] The slot plate 12 includes a horizontal plate 121 and a vertical plate 122, wherein the vertical plate 122 is disposed on one side of the horizontal plate 121, the slot 120 is disposed on the horizontal plate 121, a fixing through hole is disposed on the vertical plate 122, a fixing bolt 123 is disposed on the fixing through hole, a fixing screw hole matching the fixing through hole is disposed on the support plate 111, and the fixing bolt 123 passes through the fixing through hole and is threadedly connected with the fixing screw hole to set the slot plate 12 on the support plate 111. The slot 120 is a rectangular slot structure newly adapted to the sample to be tested.

[0034] The detection pressure head 2 includes a pressure head 20 and a connecting part 21. The connecting part 21 is provided with a socket 22. The pressure head 20 is arranged on the connecting part 21. The connecting part 21 is detachably arranged on the lifting arm 3 through the socket 22 so that the pressure head 20 faces the detection fixture 1.

[0035] Continue to refer to Figures 1 to 5 When the utility model is used, the adjusting bolt 112 is loosened so that the sliding plate 110 can move along the slide groove 105. The positions of the two support seats 11 are adjusted according to the size of the sample to be tested, and then the adjusting bolt 112 is locked to fix the sliding plate 110 on the slide seat 100. The card slot plate 12 is selected according to the size of the sample to be tested and the card slot plate 12 is locked on the support plate 111, so that the slots 120 of the two card slot plates 12 are relatively arranged to form a complete sample slot. The detection pressure head 2 is set on the lifting arm 3 through the connecting part 21, and the detection fixture 1 is fixed below the detection pressure head 2 through the mounting platform 101 on the base 10, so that the pressure head 20 of the detection pressure head 2 is directly opposite to the force application interval 13.

[0036] Start the machine, the lifting arm 3 drives the detection pressure head 2 to descend at a constant rate, and the pressure head 20 can record the mechanical value generated after contacting the sample to be tested. The pressure head 20 continues to descend along the force interval 13 until the sample breaks, and the movement of the detection pressure head 2 is stopped, and the mechanical data of the whole process is recorded. The detection fixture 1 can stably test the strength and bending toughness of CAD / CAM dental ceramics currently used. It is used to understand the performance excellence of ceramics treated under different processing conditions, and to evaluate whether the current ceramic processing conditions enable such ceramics to achieve their optimal performance, so as to assist in the improvement of denture processing technology.

[0037] The card slot 120 on the card slot plate 12 only serves to limit the horizontal movement of the sample to be tested. When the sample to be tested is set on the sample slot, the side of the sample to be tested is restricted in the card slot 120, and the bottom surface of the sample to be tested only contacts the sharp support portion 113 on the support plate 111, thereby reducing the contact area between the detection fixture 1 and the sample to be tested, making the force applied during the detection process more concentrated, thereby making the detection data more accurate.

[0038] The above is only a specific implementation of the present utility model, but the design concept of the present utility model is not limited to this. Any non-substantial changes to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A test fixture for testing dental ceramic properties, which is arranged on a universal testing machine and is used to test the properties of dental ceramics, and is characterized by: It includes a base, two supporting seats and two slot plates, the base is arranged on the universal testing machine, the two supporting seats can be slidably arranged on the base, the two supporting seats include a sliding plate and a supporting plate, the sliding plate can be slidably arranged on the base, the supporting plate is arranged on the sliding plate, the supporting plates of the two supporting seats are arranged in parallel and spaced apart, so that a force-applying interval is formed between the two supporting seats, the two slot plates are respectively arranged on the supporting plates of the two supporting seats, the slot plates are provided with slots, and the slot notches on the two slot plates are arranged relatively so that the two slots surround a complete sample slot, and the sample slot is connected to the force-applying interval.

2. A test fixture for testing dental ceramic properties according to claim 1, characterized in that: An adjustment hole is provided on the sliding plate, an adjustment bolt is arranged in the adjustment hole, a slide groove is provided on the base, the adjustment bolt passes through the adjustment hole and the slide groove and cooperates with a nut to lock or loosen the support seat, and when the two support seats slide, the support plates of the two support seats remain parallel and the top ends of the two support plates are located on the same horizontal plane.

3. A test fixture for testing dental ceramic properties according to claim 1, characterized in that: The top of the support plate is formed with a cut surface inclined upward toward the force-applying interval, so that a narrow strip-shaped support portion is formed on the top of the support plate, and the width of the narrowest part of the support portion is 0.5 mm to 2 mm.

4. A test fixture for testing dental ceramic properties according to claim 1, characterized in that: The sliding plate is arranged horizontally, the supporting plate is arranged vertically on one side of the sliding plate, the supporting plates of the two supporting seats are arranged adjacent to each other and the two supporting plates are spaced in parallel to form the force application interval.

5. The detection fixture for testing dental ceramic properties according to claim 1, characterized in that: The slot plate includes a horizontal plate and a vertical plate, the vertical plate is arranged on one side of the horizontal plate, the slot is opened on the horizontal plate, the vertical plate is provided with a fixing through hole, the fixing through hole is provided with a fixing bolt, the support plate is provided with a fixing screw hole adapted to the fixing through hole, the fixing bolt passes through the fixing through hole and is threadedly connected with the fixing screw hole to set the slot plate on the support plate.

6. A test fixture for testing dental ceramic properties according to claim 5, characterized in that: The card slot is a rectangular slot structure newly adapted to the sample to be tested.

7. A test fixture for testing dental ceramic properties according to claim 1, characterized in that: The base comprises a slide seat and a mounting platform, the slide seat is arranged on the mounting platform, the support seat can be slidably arranged on the slide seat, and the mounting platform is connected to the universal testing machine.

8. The detection fixture for testing dental ceramic properties according to claim 1, characterized in that: The outer side wall of the base is provided with scale lines.

9. A universal testing machine, characterized in that: It comprises a detection fixture, a detection pressure head and a lifting arm as described in any one of claims 1 to 8, wherein the detection fixture is arranged below the detection pressure head through a base, the detection pressure head is arranged at a distance from the detection fixture so as to apply force, and the detection pressure head can move toward the detection fixture, and the lifting arm is connected to and drives the detection pressure head to move.

10. A universal testing machine according to claim 9, characterized in that: The detection pressure head includes a pressure head portion and a connecting portion, the connecting portion is provided with a plug hole, the pressure head portion is arranged on the connecting portion, and the connecting portion is detachably arranged on the lifting arm through the plug hole so that the pressure head portion faces the detection fixture.

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