Aluminum roller Vickers hardness testing machine test indentation positioning device

Abstract

The present invention discloses an aluminum roller Vickers hardness tester test indentation positioning device, which belongs to the technical field of hardness test devices, and comprises a mounting portion, the mounting portion is placed on the anvil of the Vickers hardness tester, a fixing member is arranged on the mounting portion, a bearing seat is arranged above the mounting portion, and a locking positioning portion is arranged between the bearing seat and the mounting portion; the locking positioning portion comprises a displacement assembly and a limiting member, the displacement assembly is used to drive the aluminum roller to move, and the limiting member is used to make the various mechanisms of the displacement assembly form a whole so as to avoid the indentation of the aluminum roller from being offset. The aluminum roller can be placed on the bearing seat, and the relative position of the aluminum roller and the pressure head can be adjusted by a microscope and the displacement assembly, which is convenient and quick. After the adjustment is completed, the various mechanisms are formed into a whole under the action of the limiting member so as to avoid the deviation of the aluminum roller during the test, resulting in an error in the indentation, which affects the later experimental results.

Description

Technical Field

[0001] The invention relates to the technical field of hardness testing devices, in particular to a test indentation positioning device for an aluminum roller Vickers hardness testing machine. Background Art

[0002] The Vickers hardness test method can detect a very wide range, covering all metal hardness tests except for very small and thin test layer samples. Compared with the Brinell and Rockwell hardness methods, the indentation obtained by the Vickers hardness test is not affected by the test force and has a similar geometric shape. The consistency of the hardness values ​​obtained after changing the test force for any material with the same properties is very good. Since the indenter used in the Vickers hardness test is a 136° regular tetrahedral diamond indenter, its indentation is a square with a clear outline, and the diagonal measurement accuracy is high, which ensures the reliability of the hardness measurement accuracy.

[0003] For example, the Chinese utility model patent with the announcement number CN209086056U discloses a test indentation positioning device for a Vickers hardness testing machine, which includes a fixed clamping ring, two positioning claws, a top screw and two pins. The inner diameter surface of the fixed clamping ring is tightly matched with the outer diameter surface of the test anvil, and is fixed to the anvil of the hardness tester by the top screw.

[0004] The above solution has the following shortcomings in actual use:

[0005] This solution uses a fixed clamping ring that fits tightly with the outer diameter surface of the test anvil, and uses a positioning claw to position the sample. However, the above structure is relatively simple. When actually using it for Vickers hardness testing, the position of the sample needs to be adjusted with the cooperation of a microscope to avoid areas that may affect the hardness value. The above structure cannot be achieved. At the same time, when performing repeated tests, repeated operations are required, resulting in low test efficiency. Summary of the invention

[0006] The object of the present invention is to provide a test indentation positioning device for an aluminum roller Vickers hardness testing machine to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a test indentation positioning device for an aluminum roller shaft Vickers hardness testing machine, comprising a mounting portion, the mounting portion is placed on the anvil of the Vickers hardness testing machine, a fixing part is arranged on the mounting portion, a bearing seat is arranged above the mounting portion, and a locking positioning portion is arranged between the bearing seat and the mounting portion; the locking positioning portion comprises a displacement assembly and a limiting member, the displacement assembly is used to drive the aluminum roller shaft to move, and the limiting member is used to make the various mechanisms of the displacement assembly form a whole to avoid the indentation of the aluminum roller shaft from being offset; the displacement assembly comprises a rotating seat, the rotating seat is rotatably arranged on the upper surface of the mounting portion, the upper surface of the rotating seat is connected to a moving seat via a slide rail, the moving seat is connected to the bearing seat, a threaded screw is threadedly connected to the moving seat, and an elastic cover is arranged between the rotating seat and the bearing seat.

[0008] Preferably, the mounting portion includes a mounting platform, the mounting platform is in a U-shaped structure, a connecting ring is provided on the upper surface of the mounting platform, a supporting plate is provided below the connecting ring, a shaft body is rotatably connected to the supporting plate, and the top end of the shaft body is connected to the locking positioning portion.

[0009] Preferably, the fixing member includes two connecting plates, which are symmetrically arranged at the bottom of both sides of the anvil, and one side of the connecting plate is provided with a plurality of threaded columns, and the threaded columns are threadedly connected to the mounting table, and the side of the connecting plate opposite to the anvil is provided with a plurality of clamping blocks.

[0010] Preferably, the limiting member includes two base plates, two guide columns are sleeved on the base plates, a lifting seat 1 is provided on the upper surface of the base plates, two arc-shaped through grooves corresponding to the lifting seat 1 are provided on the rotating seat, the lifting seat 1 is sleeved with the lifting seat 2 through the through grooves, a plurality of limiting teeth are provided on the upper surface of the lifting seat 1, and a plurality of tooth grooves corresponding to the limiting teeth are provided on the abutting sides of the rotating seat and the lifting seat 1.

[0011] Preferably, a screw is provided in the middle of the upper surface of the bottom plate, the screw is sleeved with the second lifting seat, an adjusting disk is threadedly connected to the screw, and the adjusting disk can push the second lifting seat to move up and down by rotating the adjusting disk.

[0012] Preferably, the bottom of the inner wall of the rotating seat is slidably connected to two moving blocks via a second slide rail, a double-threaded screw is threadedly connected between the two moving blocks, one end of the double-threaded screw extends out of the rotating seat, and the moving blocks are rotatably connected to push arms via a rotating shaft, and the ends of the push arms are rotatably connected to fixed blocks via a rotating shaft, and the fixed blocks are connected to the lower surface of the base plate.

[0013] Preferably, the four top corners of the bearing seat are each provided with a notch, and a clamping piece for clamping the aluminum roller shaft is arranged in the notch.

[0014] Preferably, the clamping member includes a connecting seat, the top of the connecting seat is rotatably connected to a connecting block via a rotating shaft, a clamping arm is provided on one side of the top of the connecting block, the clamping arm is slidably connected to an extension arm via a groove, a clamping head is provided at the end of the extension arm, a locking bolt is threadedly connected to the clamping arm for limiting the movement of the extension arm, an extension plate is provided on the other side of the top of the connecting block, and a spring is provided between the extension plate and the bottom wall of the notch.

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

[0016] When positioning the indentation of the aluminum roller, the device is quickly connected to the anvil of the Vickers hardness tester through the fixing parts, and the firmness of the device is ensured. Then the staff places the aluminum roller on the bearing seat, and adjusts the relative position of the aluminum roller and the indenter through the microscope and displacement assembly, which is convenient and quick.

[0017] After the adjustment is completed, the various mechanisms of the displacement assembly are formed into a whole under the action of the limiting member, thereby avoiding the deviation of the aluminum roller during the test, resulting in indentation errors and affecting the subsequent experimental results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0020] Figure 3 It is a structural breakdown diagram of the whole of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the limiting member of the present invention;

[0022] Figure 5 It is a partial structural exploded view of the limiting member of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the bearing seat of the present invention;

[0024] Figure 7 This is a structural breakdown diagram of the clamping member of the present invention.

[0025] In the figure:

[0026] 100, mounting portion; 101, mounting platform; 102, connecting ring; 103, bearing plate; 104, shaft body;

[0027] 200, fixing member; 201, threaded column; 202, connecting plate; 203, clamping block;

[0028] 300, bearing seat; 401, rotating seat; 402, rocker arm; 403, arc-shaped through-groove; 404, slide rail 1; 405, moving seat; 406, threaded screw; 407, elastic cover; 408, slide rail 2; 409, bottom plate; 410, lifting seat 1; 411, lifting seat 2; 412, through-groove; 413, limit teeth; 414, tooth groove; 415, screw; 416, adjusting plate; 417, guide column; 418, double-threaded screw; 419, moving block; 420, push arm; 421, fixed block;

[0029] 400, locking positioning portion;

[0030] 500, clamping member; 501, connecting seat; 502, connecting block; 503, clamping arm; 504, groove; 505, extension arm; 506, clamping head; 507, locking bolt; 508, extension plate; 509, spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-7 , the present invention provides a technical solution:

[0033] like Figure 1 and Figure 2 As shown, the test indentation positioning device of the Vickers hardness testing machine for an aluminum roller comprises a mounting portion 100, a fixing member 200, a bearing seat 300 and a locking positioning portion 400. The mounting portion 100 is placed on the anvil of the Vickers hardness testing machine. The device is quickly connected to the anvil of the Vickers hardness testing machine through the fixing member 200, while ensuring the firmness of the device. The bearing seat 300 is used to carry the aluminum roller sample. The locking positioning portion 400 is arranged between the bearing seat 300 and the mounting portion 100. The aluminum roller is moved and fixed by the locking positioning portion 400 to avoid areas that may affect the hardness value. The locking positioning portion 400 comprises a displacement assembly and a limiting member. The displacement assembly is used to drive the aluminum roller to move, and the limiting member is used to make the various mechanisms of the displacement assembly form a whole to avoid the indentation of the aluminum roller from being offset.

[0034] like Figure 3As shown, the mounting portion 100 includes a mounting platform 101, which has an upward opening and is in a U-shaped structure. A connecting ring 102 is provided on the upper surface of the mounting platform 101, and a supporting plate 103 is provided below the connecting ring 102. The connecting ring 102 is rotatably connected to the mounting platform 101, and the connecting ring 102 is threadedly connected to the rotating seat 401, so that subsequent staff can easily disassemble it. The supporting plate 103 is connected to the inner wall of the opening of the mounting platform 101, and a shaft body 104 is rotatably connected to the supporting plate 103, and the top of the shaft body 104 is connected to the locking positioning portion 400.

[0035] Furthermore, the fixing member 200 includes two connecting plates 202, which are symmetrically arranged at the bottom of both sides of the anvil. A plurality of threaded columns 201 are arranged on one side of the connecting plate 202, and the threaded columns 201 are threadedly connected to the mounting table 101. A plurality of clamping blocks 203 are arranged on the side of the connecting plate 202 opposite to the anvil, and the cross-section of the clamping block 203 is an L-shaped structure. When the device is connected to the anvil of the Vickers hardness testing machine, the threaded column 201 is rotated, and the threaded column 201 pushes the connecting plate 202 and the clamping block 203 to start moving under the action of the thread until the clamping block 203 is tightly fitted with the anvil, and the fixing work is completed.

[0036] like Figure 4 and Figure 5 As shown, the displacement assembly includes a rotating seat 401, which is rotatably arranged on the upper surface of the mounting portion 100, and a rocker arm 402 is threadedly connected to one side of the rotating seat 401. The upper surface of the rotating seat 401 is connected to a moving seat 405 through a slide rail 404, and the moving seat 405 is connected to the bearing seat 300. A threaded screw 406 is threadedly connected to the moving seat 405, and an elastic cover 407 is arranged between the rotating seat 401 and the bearing seat 300, wherein the rocker arm 402 is threadedly connected to the rotating seat 401, and can be optionally installed as needed, and the rotating seat 401 is rotated by pushing the rotating seat 401, and the rotation angle range of the rotating seat 401 is 5 to 175°, and the moving seat 405 drives the bearing seat 300 to start moving under the guidance of the slide rail 404 by rotating the threaded screw 406. Through the above structure, the movement of the aluminum roller shaft sample can be realized to avoid those areas that may affect the hardness value.

[0037] Further, the limiting member includes two bottom plates 409, and two guide columns 417 are sleeved on the bottom plates 409. The upper surface of the bottom plates 409 is provided with a lifting seat 410, and the lifting seat 410 is used to limit the rotation of the rotating seat 401. The rotating seat 401 is provided with two arc-shaped through grooves 403 corresponding to the lifting seat 410. The lifting seat 410 is sleeved with a lifting seat 411 through the through groove 412. The lifting seat 411 is used to limit the movement of the bearing seat 300. The upper surface of the lifting seat 410 is provided with a plurality of limiting teeth 413. The rotating seat 401 and the lifting seat 410 are provided with a plurality of limiting teeth 413 on the upper surface. There are multiple tooth grooves 414 corresponding to the limiting teeth 413. After the aluminum roller shaft is moved to a suitable position, the lifting seat 410 is pushed upward until the limiting teeth 413 on the lifting seat 410 are tightly fitted with the walls of the tooth grooves 414 on the rotating seat 401, and at the same time, the top of the lifting seat 411 is tightly fitted with the lower surface of the supporting seat 300. Under the push of the lifting seat 410 and the lifting seat 411, the gaps between the joints of each structure are closed to form a whole, which can reduce the offset of the indentation caused by the gap between the structures during the indentation test, thereby reducing the occurrence of errors.

[0038] Furthermore, in order to enable the lifting seat 1 410 and the lifting seat 2 411 to simultaneously complete the lifting of the rotating seat 401 and the supporting seat 300, the lifting seat 1 410 has a groove in the middle of the bottom, and a screw 415 is arranged in the middle of the upper surface of the bottom plate 409, the screw 415 is located in the groove, the screw 415 is socketed with the lifting seat 2 411, and an adjusting disk 416 is threadedly connected to the screw 415, and the adjusting disk 416 can be rotated to make the adjusting disk 416 push the lifting seat 2 411 to move up and down, and the height of the lifting seat 2 411 can be adjusted, so that the lifting seat 1 410 and the lifting seat 2 411 can simultaneously complete the lifting of the rotating seat 401 and the supporting seat 300.

[0039] Furthermore, the bottom of the inner wall of the rotating seat 401 is slidably connected to two moving blocks 419 through the slide rail 408, and a double-threaded screw rod 418 is threadedly connected between the two moving blocks 419, and one end of the double-threaded screw rod 418 extends out of the rotating seat 401, and the moving blocks 419 are rotatably connected to a push arm 420 through a rotating shaft, and the end of the push arm 420 is rotatably connected to a fixed block 421 through a rotating shaft, and the fixed block 421 is connected to the lower surface of the base plate 409. Specifically, when it is necessary to push the lifting seat 1 410 and the lifting seat 2 411 upward, by rotating the double-threaded screw rod 418, the two moving blocks 419 move toward each other under the action of the thread, and the fixed block 421 pushes the lifting seat 1 410 and the lifting seat 2 411 upward under the push of the push arm 420.

[0040] like Figure 6As shown, the four corners of the bearing seat 300 are each provided with a notch, and a clamping member 500 for clamping the aluminum roller shaft is disposed in the notch.

[0041] like Figure 7 As shown, the clamping member 500 includes a connecting seat 501, the top of the connecting seat 501 is rotatably connected to a connecting block 502 through a rotating shaft, a clamping arm 503 is arranged on one side of the top of the connecting block 502, the clamping arm 503 is slidably connected to an extension arm 505 through a groove 504, a clamping head 506 is arranged at the end of the extension arm 505, a locking bolt 507 for limiting the movement of the extension arm 505 is threadedly connected to the clamping arm 503, an extension plate 508 is arranged on the other side of the top of the connecting block 502, a spring 509 is arranged between the extension plate 508 and the bottom wall of the notch, the locking bolt 507 is rotated to separate it from the extension arm 505, and then the extension arm 505 is pulled to move the clamping head 506 to an appropriate position, and the clamping head 506 is fitted with the aluminum roller shaft under the elastic force of the spring 509, so as to meet the clamping requirements of different specimens and comply with the product standard API SPEC The distance between the indentation edge and the specimen edge required by 5L is 1.5 to 2.0 mm, or the distance between the indentation edge and the specimen edge required by product standard TOTAL is 0.5 ± 0.25 mm.

[0042] The working process of this embodiment is as follows: the staff quickly connects the device to the anvil of the Vickers hardness testing machine through the fixing part 200, while ensuring the firmness of the device; then the staff places the aluminum roller on the bearing seat 300, and clamps and fixes the aluminum roller under the action of the clamping part 500; then the aluminum roller is moved under the action of the displacement assembly, and the relative position of the aluminum roller and the pressure head is adjusted to a suitable position with the cooperation of the microscope to avoid those areas that may affect the hardness value; then, the displacement assembly, the mounting part 100, the fixing part 200 and the bearing seat 300 are formed into a whole under the action of the limiting part; a suitable load is set on the Vickers hardness testing machine and started; the test machine gradually applies the set load; in the process of applying the load, the position of the sample is kept unchanged; after the set time is over, the test machine automatically unloads; a microscope or a special measuring instrument is used to measure the diagonal length of the indentation; and the hardness value is calculated using the Vickers hardness formula based on the measured diagonal length of the indentation.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test indentation positioning device for an aluminum roller Vickers hardness testing machine, comprising a mounting portion, the mounting portion being placed on an anvil of the Vickers hardness testing machine, characterized in that: A fixing piece is arranged on the mounting portion, a bearing seat is arranged above the mounting portion, and a locking positioning portion is arranged between the bearing seat and the mounting portion; The locking positioning part includes a displacement assembly and a limiting member, wherein the displacement assembly is used to drive the aluminum roller to move, and the limiting member is used to make the various mechanisms of the displacement assembly form a whole so as to avoid the indentation of the aluminum roller from being offset; The displacement assembly includes a rotating seat, which is rotatably arranged on the upper surface of the mounting portion, the upper surface of the rotating seat is connected to a moving seat via a slide rail, the moving seat is connected to a bearing seat, a threaded screw is threadedly connected to the moving seat, and an elastic cover is arranged between the rotating seat and the bearing seat; The limiting member comprises two bottom plates, two guide columns are sleeved on the bottom plates, a lifting seat 1 is arranged on the upper surface of the bottom plates, two arc-shaped through grooves corresponding to the lifting seat 1 are arranged on the rotating seat, the lifting seat 1 is sleeved with the lifting seat 2 through the through grooves, a plurality of limiting teeth are arranged on the upper surface of the lifting seat 1, and a plurality of tooth grooves corresponding to the limiting teeth are arranged on the abutting sides of the rotating seat and the lifting seat 1; A screw is arranged in the middle of the upper surface of the bottom plate, the screw is sleeved with the second lifting seat, an adjusting disk is threadedly connected to the screw, and the adjusting disk can push the second lifting seat to move up and down by rotating the adjusting disk; The bottom of the inner wall of the rotating seat is slidably connected to two moving blocks through a second slide rail, a double-threaded screw is threadedly connected between the two moving blocks, one end of the double-threaded screw extends out of the rotating seat, and the moving blocks are rotatably connected to push arms through a rotating shaft, and the ends of the push arms are rotatably connected to fixed blocks through a rotating shaft, and the fixed blocks are connected to the lower surface of the base plate.

2. The test indentation positioning device for the aluminum roller Vickers hardness testing machine according to claim 1, characterized in that: The mounting portion includes a mounting platform, which is in a U-shaped structure. A connecting ring is provided on the upper surface of the mounting platform, a supporting plate is provided below the connecting ring, a shaft body is rotatably connected to the supporting plate, and the top end of the shaft body is connected to the locking positioning portion.

3. The test indentation positioning device for the aluminum roller Vickers hardness testing machine according to claim 2, characterized in that: The fixing member includes two connecting plates, which are symmetrically arranged at the bottom of both sides of the anvil. One side of the connecting plate is provided with multiple threaded columns, and the threaded columns are threadedly connected to the mounting table. The side of the connecting plate opposite to the anvil is provided with multiple clamping blocks.

4. The test indentation positioning device for the aluminum roller Vickers hardness testing machine according to claim 1, characterized in that: The four top corners of the bearing seat are all provided with notches, and clamping pieces for clamping the aluminum roller shaft are arranged in the notches.

5. The test indentation positioning device for the aluminum roller Vickers hardness testing machine according to claim 3, characterized in that: The clamping member includes a connecting seat, the top of the connecting seat is rotatably connected to a connecting block via a rotating shaft, a clamping arm is arranged on one side of the top of the connecting block, the clamping arm is slidably connected to an extension arm via a groove, a clamping head is arranged at the end of the extension arm, a locking bolt for limiting the movement of the extension arm is threadedly connected to the clamping arm, an extension plate is arranged on the other side of the top of the connecting block, and a spring is arranged between the extension plate and the bottom wall of the notch.

Images