Clamping force detection equipment of clamp

Abstract

The invention relates to the technical field of fixture performance detection.The fixture clamping force detection device comprises a fixture installation mechanism used for limiting a first fixture and a second fixture, and a stretching detection mechanism used for detecting the clamping force of the first fixture and the second fixture is arranged above the fixture installation mechanism; the side edge of the clamp installation mechanism is further provided with a rotation detection mechanism used for detecting torsional force generated when the first clamp and the second clamp detect the clamping force. According to the application, the clamping force which can be borne by the test workpiece clamped between the first clamp and the second clamp is detected through the stretching detection mechanism, and when the stretching detection mechanism is used, the angles of the first clamp and the second clamp are monitored in real time; and whether the stretching detection mechanism has influence on the angle of the first clamp and the angle of the second clamp when being started is judged, so that the clamping force of the clamps can be accurately detected, and a relatively accurate clamp clamping force result is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of fixture performance detection, in particular to a fixture clamping force detection device. Background Art

[0002] In the patent document with application number 202311012143.X, a high-temperature tensile relaxation testing machine for steel bars is disclosed, and it is specifically disclosed that the steel bars are clamped and fixed by using a fixing clamp, and then the steel bars are stretched to obtain the quality test results of the steel bars.

[0003] In the above technical solution, the clamping force of the clamp has a very important influence on the steel bar. When the friction of the clamping surface of the clamp is insufficient, relative sliding or rotation is very likely to occur. Therefore, it is necessary to ensure the clamping force of the clamping surface to ensure the accuracy of the steel bar quality inspection. Summary of the invention

[0004] The object of the present invention is to provide a clamping force detection device for a clamp.

[0005] The technical problem solved by the present invention is to solve the problem in the prior art that the clamping force of the clamp cannot be accurately detected, resulting in that the clamping effect cannot be guaranteed.

[0006] The present invention can be implemented through the following technical scheme: a clamping force detection device for a clamp, including a first clamp and a second clamp for clamping, and also including a clamp installation mechanism for limiting the first clamp and the second clamp, a tensile detection mechanism for detecting the clamping force of the first clamp and the second clamp is arranged above the clamp installation mechanism, and a rotation detection mechanism for detecting the torsional force caused by the first clamp and the second clamp when detecting the clamping force is also arranged on the side of the clamp installation mechanism.

[0007] A further technical improvement of the present invention is that the stretch detection mechanism comprises a pulling telescopic rod, a stretch detection piece is installed at the output end of the pulling telescopic rod, and the stretch detection piece is installed on the test workpiece through an extension piece.

[0008] A further technical improvement of the present invention is that the position of the pulling telescopic rod is adjustable, and a detection piece mounting base is installed on the side of the tensile detection piece, the detection piece mounting base is slidably connected to the adjustment mounting plate, and the adjustment mounting plate is installed at the output end of the pulling telescopic rod.

[0009] A further technical improvement of the present invention is that the clamp installation mechanism includes an adjustment component, and fixed seats are respectively provided at both ends of the adjustment component. The distance between adjacent fixed seats is adjustable, and a right-angle limit plate is fixed on the fixed seat, and a mounting column is provided on the right-angle limit plate. The first clamp and the second clamp are respectively provided with several groups of mounting grooves for cooperating with the mounting columns.

[0010] A further technical improvement of the present invention is that the adjustment component includes a first limiting column and a second limiting column, the distance between the first limiting column and the second limiting column is adjustable, and the first limiting column and the second limiting column are respectively fixedly connected to the fixing seat.

[0011] A further technical improvement of the present invention is that: the first limit column is fixedly installed on the adjustment cavity, an adjustment piston is slidably arranged inside the adjustment cavity, and the adjustment piston is fixedly connected to the second limit column, and the pressure between the adjustment piston and the adjustment cavity is adjustable.

[0012] A further technical improvement of the present invention is that the rotation detection mechanism includes a rotation detection plate, an internal stable base is fixed inside the rotation detection plate, internal connecting shafts are fixed to the sides of the first clamp and the second clamp respectively, and the internal connecting shaft and the internal stable base are slidably connected.

[0013] A further technical improvement of the present invention is that a connecting groove is provided in the middle of the internal stable base, the connecting groove is in an I-shape, and the connecting portion of the internal connecting shaft is in an I-shape, and the internal connecting shaft and the connecting groove cooperate with each other.

[0014] A further technical improvement of the present invention is that the rotation detection piece is fixedly mounted on the rotation rod, the rotation rod is rotationally mounted on the output end of the rotation push rod, and the rotation push rod is rotationally mounted on the frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present application implements the clamping and fixing of the first clamp and the second clamp by a clamp installation mechanism, and then uses a stretching detection mechanism to detect the clamping force that the test workpiece clamped in the first clamp and the second clamp can withstand. The present application is also provided with a rotation detection mechanism, which can monitor the angle of the first clamp and the second clamp in real time when the stretching detection mechanism is in use, and determine whether the stretching detection mechanism has an impact on the angle of the first clamp and the second clamp when it is started, that is, whether it will cause the first clamp and the second clamp to rotate, so that the clamping force of the clamp can be accurately detected, and a more accurate clamp clamping force result can be obtained.

[0017] 2. The present application utilizes an adjustment component to control the position between the first limit column and the second limit column, thereby being able to limit the first clamp and the second clamp to ensure the accuracy of the position of the first clamp and the second clamp. In the present application, by utilizing the cooperation of the mounting column and the mounting groove, the relative position of the first clamp and the second clamp is stabilized, thereby being able to achieve clamping and limiting of the first clamp and the second clamp.

[0018] 3. The present application utilizes the existence of a rotating detection plate, so that when the first clamp and the second clamp partially rotate under the action of the tensile force, the rotating detection plate is used to obtain the rotational force they are borne, thereby converting the rotational force into real data and obtaining more accurate tension influencing parameters, thereby obtaining the clamping force influencing parameters of the clamp.

[0019] 4. In the present application, since the connecting groove and the connecting shaft are both in an I-shape, when in use, the internal connecting shaft and the connecting groove are stuck by starting the rotating push rod, thereby reducing the impact of the gap between the internal connecting shaft and the connecting groove, thereby ensuring the detection accuracy of the rotation detection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the fixture detection device of the present invention;

[0022] Figure 2 It is a schematic diagram of the fixture installation mechanism of the present invention;

[0023] Figure 3 It is a schematic diagram of the rotation detection mechanism of the present invention;

[0024] Figure 4 It is a schematic diagram of the stretching detection mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the adjustment component of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection between the internal connecting shaft and the internal stable base of the present invention;

[0027] Figure 7 It is a schematic diagram of the close contact position of the internal connecting shaft and the internal stable base of the present invention.

[0028] In the figure: 1. first clamp; 2. rotation detection mechanism; 21. fixed rotating seat; 22. rotating push rod; 23. rotating base; 24. rotating rod; 25. rotating detection piece; 3. screw mechanism; 4. stretching detection mechanism; 41. pulling telescopic rod; 42. adjusting mounting plate; 43. detection piece mounting base; 44. adjusting slide bar; 45. connecting slide block; 5. stretching detection piece; 6. extension piece; 7. second clamp; 8. clamp mounting mechanism; 81. mounting groove; 82. right angle limit plate; 83. mounting column; 84. fixing column; 85. fixing seat; 86. adjusting component; 861. adjusting cavity; 862. adjusting piston; 863. exhaust pipe; 864. first limit column; 865. intake pipe; 866. limit base; 867. adjusting push rod; 868. second limit column; 9. internal stable base; 10. connecting groove; 11. internal connecting shaft. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] See also Figure 1-7 As shown, the clamping force detection device of the clamp includes a first clamp 1 and a second clamp 7, wherein the opposite surfaces of the first clamp 1 and the second clamp 7 are clamping surfaces, and by placing a test workpiece between the first clamp 1 and the second clamp 7, the test workpiece is tested under the clamping action of the first clamp 1 and the second clamp 7 respectively, so that the clamping stability of the first clamp 1 and the second clamp 7 can be determined.

[0031] Therefore, in the present application, a clamp installation mechanism 8 is provided for clamping and installing the first clamp 1 and the second clamp 7, an extension piece 6 for connecting with the tensile detection mechanism 4 is fixed at the end of the test workpiece, and a tensile detection piece 5 for detecting whether the test workpiece can withstand the tensile force is provided on the extension piece 6, and a rotation detection mechanism 2 for detecting whether the test workpiece rotates is provided on the side of the clamp installation mechanism 8.

[0032] Specifically, in the present application, the clamp installation mechanism 8 is used to realize the installation of the first clamp 1 and the second clamp 7, and the clamp installation mechanism 8 includes installing the first clamp 1 and the second clamp 7 in a clamping installation manner, thereby realizing the rapid installation and disassembly of the first clamp 1 and the second clamp 7, thereby ensuring the detection efficiency of the clamp during detection.

[0033] The clamp mounting mechanism 8 includes a right-angle limit plate 82, wherein two groups of mounting columns 83 are fixed on the right-angle limit plate 82, and the mounting columns 83 are located at both ends of the right-angle limit plate 82. A plurality of mounting grooves 81 cooperating with the mounting columns 83 are provided on the first clamp 1 and the second clamp 7. When in use, the position of the right-angle limit plate 82 is controlled so that the mounting columns 83 enter the interior of the mounting grooves 81, thereby realizing the separate installation and fixation of the first clamp 1 and the second clamp 7, thereby ensuring the stability of the first clamp 1 and the second clamp 7.

[0034] In order to control the position of the right-angle limit plate 82, the right-angle limit plate 82 is fixedly mounted on a fixed seat 85, and the fixed seat 85 is fixedly mounted on the output end of the adjustment component 86. The adjustment component 86 is used to control the position of the right-angle limit plate 82, thereby controlling the relative position of the first clamp 1 and the second clamp 7.

[0035] The adjustment assembly 86 in the present application includes an adjustment cavity 861, a first limiting column 864 is fixed on one side of the adjustment cavity 861, an exhaust pipe 863 and an intake pipe 865 are connected at the end of the adjustment cavity 861, and an adjustment piston 862 is slidably arranged inside the adjustment cavity 861. When in use, the intake pipe 865 is used to allow gas to enter, and the exhaust pipe 863 is used to allow gas to be discharged, so that the position of the adjustment piston 862 is moved, thereby controlling the position of the adjustment push rod 867 arranged on the side of the adjustment piston 862, and adjusting the position of the adjustment piston 862. The position of the second limit column 868 arranged on the side of the adjustment push rod 867 is controlled so that the distance between the first limit column 864 and the second limit column 868 can be controlled. Fixed seats 85 are respectively fixedly installed on the ends of the first limit column 864 and the second limit column 868. Therefore, when the distance between the first limit column 864 and the second limit column 868 is adjusted, the position of the adjacent right-angle limit plate 82 can be adjusted, and then the first clamp 1 and the second clamp 7 can be clamped and limited respectively, thereby ensuring the accuracy of the relative positions of the first clamp 1 and the second clamp 7.

[0036] In order to ensure the stable clamping of the first clamp 1 and the second clamp 7, the present application clamps them through an external clamping device. The external clamping device in the present application includes an external telescopic rod and an external clamping plate. The external telescopic rod is used to control the external clamping plate to clamp the first clamp 1 and the second clamp 7 towards each other to ensure the stability of the clamping of the first clamp 1 and the second clamp 7.

[0037] The stretch detection piece 5 is connected to the stretch detection mechanism 4. The tension borne by the stretch detection piece 5 is calculated to obtain the tension borne by the extension piece 6, thereby obtaining the tension borne by the test workpiece and the friction force between the opposing surfaces of the first clamp 1 and the second clamp 7.

[0038] Therefore, the stretching detection mechanism 4 includes a connecting slider 45, which is installed at the output end of the screw mechanism 3. The screw mechanism 3 is used to control the position of the connecting slider 45 to preliminarily adjust the position of the test workpiece. A pulling telescopic rod 41 is fixed on the connecting slider 45, wherein an adjustment mounting plate 42 is fixed at the end of the pulling telescopic rod 41, and an adjustment slide 44 is slidably installed on the adjustment mounting plate 42, wherein a detection piece mounting base 43 for fixing the stretching detection piece 5 is fixed on the adjustment slide 44. When in use, the position of the connecting slider 45 is controlled by the screw mechanism 3, thereby controlling the position of the pulling telescopic rod 41, so that the test workpiece can be accurately placed between the first clamp 1 and the second clamp 7 to ensure the position stability of the test workpiece and the first clamp 1 and the second clamp 7, and the sliding installation of the detection piece mounting base 43 and the adjustment mounting plate 42 can adaptively adjust the position of the detection piece mounting base 43 when in use, so as to further adjust the position of the test workpiece.

[0039] When the test workpiece is being tested, since the clamping centers of the first clamp 1 and the second clamp 7 are not necessarily at their center positions, the relative positions of the first clamp 1 and the second clamp 7 are easily rotated during stretching. Therefore, in the present application, the rotation detection mechanism 2 is used to detect the first clamp 1 and the second clamp 7 to determine the rotational force that may be applied thereto.

[0040] Specifically, the rotation detection mechanism 2 includes a fixed rotating seat 21, on which a rotating push rod 22 is fixedly installed, wherein the fixed rotating seat 21 is rotatably connected to the frame, and a rotating base 23 is fixed on the rotating push rod 22, wherein a rotating rod 24 is rotatably arranged on the rotating base 23, and a rotating detection piece 25 is also fixed on the rotating rod 24, and the rotating detection piece 25 is used to detect the torsional force, and an internal stable base 9 is fixed inside the rotating detection piece 25, wherein an I-shaped connecting groove 10 is provided on the internal stable base 9, and internal connecting shafts 11 are respectively fixed on the sides of the first clamp 1 and the second clamp 7, wherein the internal connecting shaft 11 and the connecting groove 10 are slidably connected, so that the first clamp 1 and the second clamp 7 can be respectively connected to the internal stable base 9, and when the first clamp 1 and the second clamp 7 are rotating, the torsional force they bear can be obtained, so that the torsional force that the first clamp 1 and the second clamp 7 may bear during the tensile test can be judged, and the detection accuracy of the first clamp 1 and the second clamp 7 can be further ensured.

[0041] By starting the rotary push rod 22, the longitudinal movement of the rotary base 23 is controlled to achieve the position adjustment of the rotary rod 24, so that the rotary detection plate 25 drives the internal stable base 9 to rotate, so that the internal connecting shaft 11 is tightly attached to the connecting groove 10, so as to reduce the rotational force error that may be generated when the connecting groove 10 and the internal connecting shaft 11 are not tightly attached, thereby further ensuring that the torsional force is not affected during the clamping force test, thereby ensuring the accuracy of the result.

[0042] When the present invention is in use, firstly, the first clamp 1 and the second clamp 7 need to be installed. The specific installation method is to first install the second clamp 7 on the installation column 83, that is, at this time, the positions of the installation column 83 and the installation groove 81 are matched to realize the installation of the right-angle limit plate 82, thereby realizing the installation of the adjustment component 86 and the second clamp 7. At this time, the internal connecting shaft 11 on the second clamp 7 moves to the internal stable base 9 of the first limit column 864 until the second clamp 7 is moved to the edge position. At this time, the first clamp 1 and the second clamp 7 are pressed together, and the first clamp 1 is controlled to move in the direction away from the second clamp 7 until the internal connecting shaft 11 on the first clamp 1 moves to the internal stable base 9 of the first limit column 864. At this time, the adjustment component 86 is started to use the vacuum equipment to pass through The exhaust pipe 863 exhausts the gas to control the position of the adjustment piston 862, thereby controlling the position of the second limiting column 868, so that the fixing seat 85 on the second limiting column 868 can move until the installation column 83 enters the interior of the installation groove 81, thereby realizing the preliminary installation of the first fixture 1 and the second fixture 7. During this process, it is necessary to adjust the position of the limiting base 866 fixedly installed on the adjustment cavity 861, so that the relative positions of the first fixture 1 and the second fixture 7 can be adjusted, so that the internal connecting shafts 11 on the first fixture 1 and the second fixture 7 are both in corresponding positions, and then the test workpiece is placed between the first fixture 1 and the second fixture 7, and the first fixture 1 and the second fixture 7 are clamped and fixed by using the external telescopic rod and the external clamping plate, and the installation and placement of the test workpiece can be realized at this time;

[0043] Subsequently, the present application controls the longitudinal movement of the rotating base 23 by starting the rotating push rod 22 to adjust the position of the rotating rod 24, so that the rotating detection piece 25 drives the internal stable base 9 to rotate, so that the internal connecting shaft 11 is closely attached to the connecting groove 10, so as to reduce the rotational force error that may be generated when the connecting groove 10 and the internal connecting shaft 11 are not closely attached, and further ensure the torsional force effect during the clamping force test, and ensure the accuracy of the result;

[0044] Then, the test is carried out. During the test, the position of the connecting slider 45 is controlled by the screw mechanism 3, thereby controlling the position of the pulling telescopic rod 41, so that the test workpiece can be accurately placed between the first clamp 1 and the second clamp 7 to ensure the position stability of the test workpiece and the first clamp 1 and the second clamp 7. The sliding installation of the detection piece mounting base 43 and the adjustment mounting plate 42 can adaptively adjust the position of the detection piece mounting base 43 during use, so as to further adjust the position of the test workpiece.

[0045] Under the starting action of pulling the telescopic rod 41, the test workpiece is subjected to an upward pulling force. By calculating the pulling force borne by the stretch detection piece 5, the pulling force borne by the extension piece 6 is obtained, so that the pulling force borne by the test workpiece can be obtained, and thus the friction force between the opposing surfaces of the first clamp 1 and the second clamp 7 can be obtained;

[0046] In this process, since the clamping centers of the first clamp 1 and the second clamp 7 are not necessarily at their center positions, the relative positions of the first clamp 1 and the second clamp 7 are easily rotated during stretching. When the first clamp 1 and the second clamp 7 are subjected to torsional force, the torsional force they are subjected to is obtained by rotating the detection plate 25, so as to determine the magnitude of the torsional force that the first clamp 1 and the second clamp 7 may be subjected to during the stretching test, thereby further ensuring the detection accuracy of the first clamp 1 and the second clamp 7.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A clamping force detection device for a clamp, comprising a first clamp (1) and a second clamp (7) for clamping, characterized in that: The invention also comprises a clamp installation mechanism (8) for limiting the position of the first clamp (1) and the second clamp (7); a tensile detection mechanism (4) for detecting the clamping force of the first clamp (1) and the second clamp (7) is arranged above the clamp installation mechanism (8); and a rotation detection mechanism (2) for detecting the torsional force caused by the first clamp (1) and the second clamp (7) when detecting the clamping force is also arranged on the side of the clamp installation mechanism (8).

2. The clamping force detection device of the clamp according to claim 1, characterized in that: The stretch detection mechanism (4) comprises a pulling telescopic rod (41), a stretch detection piece (5) is installed at the output end of the pulling telescopic rod (41), and the stretch detection piece (5) is installed on the test workpiece through an extension piece (6).

3. The clamping force detection device of the clamp according to claim 2, characterized in that: The position of the pulling telescopic rod (41) is adjustable, and a detection piece mounting base (43) is installed on the side of the stretching detection piece (5), the detection piece mounting base (43) and the adjustment mounting plate (42) are slidably connected, and the adjustment mounting plate (42) is installed at the output end of the pulling telescopic rod (41).

4. The clamping force detection device of the clamp according to claim 1, characterized in that: The clamp installation mechanism (8) comprises an adjustment component (86), and fixed seats (85) are respectively arranged at both ends of the adjustment component (86), and the distance between adjacent fixed seats (85) is adjustable. A right-angle limit plate (82) is fixed on the fixed seat (85), and a mounting column (83) is arranged on the right-angle limit plate (82). The first clamp (1) and the second clamp (7) are respectively provided with a plurality of groups of mounting grooves (81) for cooperating with the mounting columns (83).

5. The clamping force detection device of the clamp according to claim 4, characterized in that: The adjustment assembly (86) comprises a first limiting column (864) and a second limiting column (868), the distance between the first limiting column (864) and the second limiting column (868) is adjustable, and the first limiting column (864) and the second limiting column (868) are respectively fixedly connected to the fixing seat (85).

6. The clamping force detection device of the clamp according to claim 5, characterized in that: The first limiting column (864) is fixedly mounted on the adjustment cavity (861), an adjustment piston (862) is slidably arranged inside the adjustment cavity (861), and the adjustment piston (862) and the second limiting column (868) are fixedly connected, and the pressure between the adjustment piston (862) and the adjustment cavity (861) is adjustable.

7. The clamping force detection device of the clamp according to claim 1, characterized in that: The rotation detection mechanism (2) comprises a rotation detection plate (25), an internal stable base (9) is fixed inside the rotation detection plate (25), and internal connecting shafts (11) are respectively fixed on the sides of the first clamp (1) and the second clamp (7), and the internal connecting shaft (11) and the internal stable base (9) are slidably connected.

8. The clamping force detection device of the clamp according to claim 7, characterized in that: A connecting groove (10) is provided in the middle of the internal stable base (9), the connecting groove (10) is in an I-shape, and the connecting portion of the internal connecting shaft (11) is in an I-shape, and the internal connecting shaft (11) and the connecting groove (10) are matched.

9. The clamping force detection device of the clamp according to claim 8, characterized in that: The rotation detection piece (25) is fixedly mounted on the rotating rod (24), the rotating rod (24) is rotatably mounted on the output end of the rotating push rod (22), and the rotating push rod (22) is rotatably mounted on the frame.

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