A precision hardware strength detection device

Abstract

The present invention relates to a precision hardware component strength detection device. By setting up a tensile device for hardware components, a torsional resistance device for hardware components, a compressive device for hardware components, and a shear resistance device for hardware components, the strength detection of the hardware components for tensile, torsional resistance, compressive, and shear resistance is carried out simultaneously, solving the problem in the prior art that only simple tensile or compressive detection can be carried out on the hardware components. Moreover, by setting up a detection device and a control device, while carrying out tensile detection and torsional resistance detection on the hardware components, the boundary value from elastic deformation to plastic deformation of the hardware components can be detected, so that the elastic deformation and plastic deformation degrees of the hardware components under complex multiple composite forces can be determined.

Description

Technical Field

[0001] The present invention relates to the field of strength detection; specifically, it is a precision hardware strength detection device. Background Art

[0002] The strength detection of hardware refers to the ability of hardware materials to resist deformation and damage under the action of external forces, which can be divided into tensile, compressive, bending, torsion, and shear strength detection treatments. Traditional hardware mainly uses copper ornaments, while in modern hardware, in order to reduce weight and not reduce the strength of the hardware too much on the premise of weight reduction, alloys such as aluminum and titanium are often added. As is well known, the strength of aluminum and titanium alloys is not as great as that of copper. Therefore, it is particularly necessary to detect the strength of new hardware at present. The utility model patent with the publication number CN218067468U discloses a hardware stamping die punch strength detection device. By placing punches on the top of the installation block respectively and controlling the motor to drive the rotating ring to rotate, when the pressing block is directly above the installation block, control the piston rod of the oil cylinder to drive the pressing block to press down to test the compressive strength of the entire hardware. The invention patent with the publication number CN115219168A discloses a strength detection device for hardware manufacturing. By sliding the movable block, the moving block slides, and the moving block sliding causes the pressing plate to move to fix and limit the hardware outside the bearing table. By rotating the first runner and the second runner, the slide plate slides, and the slide plate sliding causes the stress plate to apply a certain specification of pressure to the fastened hardware, so as to detect the compressive strength of the hardware. The utility model patent with the publication number CN217331589U discloses a hardware stamping die punch strength detection device. By controlling the hydraulic cylinder to extend, the push plate can be driven to move to the right. While the push plate moves, it can drive the pressure sensor and the pressing block to move to the right, so that the right side of the pressing block can contact the surface of the punch body vertically placed in the placement seat, and under the continuous extension of the hydraulic cylinder, the pressing block can continuously apply pressure to the upper end of the punch body. And through the settings of the pressure sensor, infrared rangefinder, and display screen, the pressure received by the punch body and the displacement distance generated due to deformation when receiving the pressure can be detected. It can be seen that the existing hardware detection parts first detect traditional copper hardware, and do not detect new hardware with aluminum-titanium alloy. Secondly, during the detection, only simple compressive detection is carried out, and the strength detection of the hardware for compression, bending, torsion, and shear is not involved. Moreover, the detection devices in the existing technology can only perform one detection and cannot perform multiple detections simultaneously.

[0003] (I) Technical Problems to be Solved

[0004] In order to solve the above technical problems, the present invention provides a precision hardware strength detection device (II) Technical Solution

[0005] A precision hardware strength detection device, including a hardware tensile device, a hardware anti-twist device, a hardware compression device, and a hardware shear resistance device.

[0006] Further, the hardware tensile device includes an upper and lower hardware pulling device. The upper hardware pulling device includes a pulling slide rail I, an upper pulling unit I, an upper pulling unit II, and an upper pulling unit III. The three upper pulling units are arranged horizontally on the pulling slide rail I. The upper pulling unit I, the upper pulling unit II, and the upper pulling unit III all include a sliding block, a sliding cavity, a driving gear, a rack, and a clamping rod.

[0007] Further, the interiors of the sliding blocks of the three pulling units are all hollow. Symmetric through holes are provided on the side walls on both sides of the sliding blocks. The pulling slide rail passes through the through holes of the three sliding blocks to connect the three sliding blocks, and the three sliding blocks can slide left and right on the pulling slide rail.

[0008] Further, the bottoms of the three sliding blocks are all fixedly connected with sliding cavities. The interiors of the sliding cavities are hollow. Driving gears are arranged inside the three sliding cavities. The three driving gears are all driven by a driving device to drive the drive shafts. The three driving gears are all engaged with racks. Driven by the driving gears, the racks inside the three sliding cavities move up and down.

[0009] Further, the bottoms of the three racks are all connected with connecting blocks. Two upper and lower connecting slide rails are provided at the bottoms of the connecting blocks. A slider I and a slider II are arranged inside the upper connecting slide rail. A slider III and a slider IV are arranged inside the lower connecting slide rail. The positions of the slider I and the slider III are on the same horizontal line. The positions of the slider II and the slider IV are on the same horizontal line. The slider I and the slider III are connected with a clamping rod I. The slider II and the slider IV are connected with a clamping rod II. The clamping rod I and the clamping rod II can clamp the upper part of the hardware.

[0010] Further, the lower hardware pulling device includes a pulling slide rail II, a lower pulling unit I, a lower pulling unit II, and a lower pulling unit III. The three lower pulling units are arranged horizontally on the pulling slide rail II. The lower pulling unit I, the lower pulling unit II, and the lower pulling unit III all include a sliding block, a sliding cavity, a driving gear, a rack, and a clamping rod.

[0011] Further, the setting methods of the sliding block, the sliding cavity, the driving gear, the rack, and the clamping rod are the same as those of the upper pulling unit.

[0012] Further, the upper pulling units and the lower pulling units correspond one by one. The clamping rods of the upper and lower pulling units respectively clamp the upper and lower parts of the hardware. When it is necessary to detect the tensile strength of the hardware, the upper and lower pulling units are driven to pull in opposite directions by the driving of the gears and racks inside the upper and lower pulling units, so as to pull the hardware in opposite directions up and down to test the tensile strength of the hardware.

[0013] Further, the anti-twist device for the hardware includes an upper circular ring and a lower circular ring, which are symmetrically arranged. The upper circular ring is provided with a circular twist slide rail I along the circumferential direction inside the ring, and the lower circular ring is provided with a circular twist slide rail II along the circumferential direction inside the ring.

[0014] Further, twist sliders I are arranged at the left and right ends of the pull slide rail I, and the two twist sliders I at both ends are respectively arranged in the circular twist slide rail I of the upper circular ring.

[0015] Further, twist sliders II are arranged at the left and right ends of the pull slide rail II, and the two twist sliders II at both ends are respectively arranged in the circular twist slide rail II of the lower circular ring.

[0016] Further, a detection device, a control device and a twist driving device are also provided. The twist driving device is controlled by the control device to drive the twist sliders I and II to move counterclockwise and clockwise respectively along the circumferential direction in the pull slide rail I and the pull slide rail II, so as to drive the three upper pull units and the three lower pull units on the pull slide rail I and the pull slide rail II to move clockwise and counterclockwise respectively. The twist driving device controls the rotation speed of the upper pull unit and the lower pull unit respectively.

[0017] Further, while the upper and lower pull units rotate clockwise and counterclockwise respectively, the upper and lower pull units pull the hardware. The detection device detects and records the circumferential deformation amount Ε and the deformation amount Α perpendicular to the ground of the hardware between the maximum elastic deformation and the plastic deformation during torsion.

[0018] Further, the hardware compression device includes a compression device I and a compression device II. Both the compression device I and the compression device II are arranged between the upper and lower hardware pull devices. The compression device I is arranged on one side of the middle gap between the upper and lower pull units facing one side of the hardware; the compression device II is arranged on the other side of the middle gap between the upper and lower pull units facing the other side of the hardware.

[0019] Further, the compression device I includes a compression block I. The inside of the compression block I is a cavity, and a compression cylinder I is arranged in the cavity. The compression cylinder I is connected with a telescopic rod I, and one end of the telescopic rod I is connected with a pressure rod. The width of the pressure rod is equal to the width of the hardware.

[0020] Further, the compression device II includes a compression block II. The inside of the compression block II is a cavity, and a plurality of compression cylinders II are arranged in the cavity. The plurality of compression cylinders II are connected with a plurality of telescopic rods II, and one end of each telescopic rod II is connected with an impact block, and a plurality of impact protrusions are arranged on one end of each impact block.

[0021] Further, two anti-shearing devices are also provided. The two anti-shearing devices are arranged on both sides of the middle gap between the compression-resistant device I and the compression-resistant device II. The anti-shearing device includes a rotating shaft, a swinging ring, a swinging block, and a shearing impact head; a through hole is provided in the center of the swinging ring, the rotating shaft is connected to the swinging ring through the through hole, a swinging block is fixedly connected to the lower end of the swinging ring, and a shearing impact head is fixedly connected to the lower end of the swinging block. The shearing impact heads of the two anti-shearing devices perform shearing impact on the hardware by the swinging of the swinging ring.

[0022] (III) Beneficial effects;

[0023] By providing a tensile strength detection device, a torsional resistance device, a compressive strength device, and an anti-shearing device for the hardware, the present invention simultaneously performs tensile, torsional resistance, compressive, and anti-shearing strength detections on the hardware, solving the problem in the prior art that only simple tensile or compressive detections can be performed on the hardware. Moreover, by providing a detection device and a control device, while performing tensile detection and torsional resistance detection on the hardware, the boundary value from elastic deformation to plastic deformation of the hardware can be detected, so as to determine the elastic deformation and plastic deformation degrees of the hardware under complex multiple combined forces. Description of the drawings

[0024] Appendix Figure 1 It is a schematic diagram of the tensile strength detection device for the hardware.

[0025] Appendix Figure 2 It is a schematic diagram of the torsional resistance device for the hardware.

[0026] Appendix Figure 3 It is a schematic diagram of the strength detection device for the hardware.

[0027] Appendix Figure 4 It is a schematic diagram of the sliding cavity

[0028] 1 - Pulling slide rail I, 2 - Sliding block, 3 - Sliding cavity, 4 - Upper circular ring, 5 - Lower circular ring, 6 - Connecting block, 7 - Clamping rod (I - II), 8 - Compression block I, 9 - Telescopic rod I, 10 - Pressure rod, 11 - Compression block II, 12 - Telescopic rod II, 13 - Impact block, 14 - Impact protrusion, 15 - Rotating shaft, 16 - Swinging ring, 17 - Swinging block, 18 - Shearing impact head, 19 - Driving gear, 20 - Rack, 21 - Upper connecting slide rail, 22 - Lower connecting slide rail, 23 - Upper pulling unit I, 24 - Upper pulling unit II, 25 - Upper pulling unit III, 26 - Lower pulling unit I, 27 - Lower pulling unit II, 28 - Lower pulling unit III, 29 - Pulling slide rail II. Specific implementation manners

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] A precision hardware strength detection device includes a hardware tensile device, a hardware anti-twist device, a hardware compressive device, and a hardware shear-resistant device. The hardware tensile device includes an upper and lower hardware pulling device. The upper hardware pulling device includes a pulling slide rail I (1), an upper pulling unit I (23), an upper pulling unit II (24), and an upper pulling unit III (25). The three upper pulling units are arranged horizontally on the pulling slide rail I (1). The upper pulling unit I, the upper pulling unit II, and the upper pulling unit III each include a sliding block 2, a sliding cavity 3, a driving gear 19, a rack 20, and a clamping rod 7. The inside of the sliding block 2 of the three pulling units is hollow. Symmetrical through holes are provided on the side walls on both sides of the sliding block 2. The pulling slide rail I (1) passes through the through holes of the three sliding blocks to connect the three sliding blocks 2. The three sliding blocks 2 can slide left and right on the pulling slide rail I (1). The bottom of each of the three sliding blocks 2 is fixedly connected to a sliding cavity 3. The inside of the sliding cavity 3 is hollow. A driving gear 19 is provided inside each of the three sliding cavities 3. The three driving gears 19 are all driven by a driving device to drive the drive shaft. The three driving gears 19 are all engaged with a rack 20. Driven by the driving gear 19, the racks 20 in the three sliding cavities 3 move up and down. The bottom of each of the three racks 20 is connected to a connecting block 6. The bottom of the connecting block 6 is provided with two upper and lower connecting slide rails. A slider I and a slider II are provided in the upper connecting slide rail 21. A slider III and a slider IV are provided in the lower connecting slide rail 22. The positions of the slider I and the slider III are on the same horizontal line. The positions of the slider II and the slider IV are on the same horizontal line. The slider I and the slider III are connected to a clamping rod I (7). The slider II and the slider IV are connected to a clamping rod II (7). The clamping rod I (7) and the clamping rod II (7) can clamp the upper part of the hardware. The lower hardware pulling device includes a pulling slide rail II (29), a lower pulling unit I (26), a lower pulling unit II (27), and a lower pulling unit III (28).Three lower pulling units are arranged horizontally on the pulling slide rail II (29). The lower pulling unit I (26), the lower pulling unit II (27), and the lower pulling unit III (28) all include a sliding block 2, a sliding cavity 3, a driving gear 19, a rack 20, and a clamping rod 7. The setting methods of the sliding block 2, the sliding cavity 3, the driving gear 19, the rack 20, and the clamping rod 7 are the same as those of the upper pulling unit. The upper pulling unit and the lower pulling unit correspond one by one. The clamping rods of the upper and lower pulling units clamp the upper and lower parts of the hardware respectively. When it is necessary to detect the tensile strength of the hardware, the upper and lower pulling units are driven to pull in opposite directions by the driving of the gears and racks inside the upper and lower pulling units, so as to pull the hardware in opposite directions up and down to test the tensile strength of the hardware. The hardware anti-twist device includes an upper circular ring 4 and a lower circular ring 5. The upper and lower circular rings are symmetrically arranged. The upper circular ring is provided with a circular twist slide rail I along the circumferential direction of the inner side of the circular ring. The lower circular ring is provided with a circular twist slide rail II along the circumferential direction of the inner side of the circular ring. The left and right ends of the pulling slide rail I (1) are provided with twist sliders I, and the two ends of the twist sliders I are respectively arranged in the circular twist slide rail I of the upper circular ring. The left and right ends of the pulling slide rail II (29) are provided with twist sliders II, and the two ends of the twist sliders II are respectively arranged in the circular twist slide rail II of the lower circular ring. A detection device, a control device, and a twist driving device are also provided. The control device controls the twist driving device to drive the twist sliders I and II to move counterclockwise and clockwise respectively along the circumferential direction in the pulling slide rail I (1) and the pulling slide rail II (29), so as to drive the three upper pulling units and the three lower pulling units on the pulling slide rail I (1) and the pulling slide rail II (29) to move clockwise and counterclockwise respectively. The twist driving device controls the rotation speed of the upper pulling unit and the lower pulling unit respectively. While the upper and lower pulling units rotate clockwise and counterclockwise respectively, the upper and lower pulling units pull the hardware. The detection device detects and records the circumferential deformation amount Ε and the deformation amount Α perpendicular to the ground of the hardware between the maximum elastic deformation and the plastic deformation during torsion. The hardware compression device includes a compression device I and a compression device II. The compression device I and the compression device II are both arranged between the upper and lower hardware pulling devices. The compression device I is arranged at one side of the middle gap between the upper and lower pulling units facing one side of the hardware;The compression resistance device II is arranged on the other side of the middle gap of the up-and-down pulling unit facing the other side of the hardware part. The compression resistance device I includes a compression block I (8). The inside of the compression block I (8) is a cavity, and a compression cylinder I is arranged in the cavity. The compression cylinder I is connected with a telescopic rod I (9). One end of the telescopic rod I (9) is connected with a pressure rod (10). The width of the pressure rod (10) is equal to the width of the hardware part. The compression resistance device II includes a compression block II (11). The inside of the compression block II (11) is a cavity, and a plurality of compression cylinders II are arranged in the cavity. The plurality of compression cylinders II are connected with a plurality of telescopic rods II (12). One end of each telescopic rod II (12) is connected with an impact block (13). A plurality of impact protrusions (14) are arranged on one end of each impact block (13). Two anti-shearing devices are also arranged on both sides of the middle gap between the compression resistance device I and the compression resistance device II. The anti-shearing device includes a rotating shaft 15, a swinging ring 16, a swinging block 17, and a shearing impact head 18. A through hole is arranged in the center of the swinging ring. The rotating shaft is connected with the swinging ring through the through hole. The lower end of the swinging ring is fixedly connected with the swinging block. The lower end of the swinging block is fixedly connected with the shearing impact head. The shearing impact heads of the two anti-shearing devices perform shearing impacts on the hardware part through the swinging of the swinging ring.

Claims

1. A precision hardware strength detection device, including a tensile device, an anti-distortion device, an anti-compression device, and an anti-shear device. The tensile device includes an upper and lower pulling device. The upper pulling device includes a pulling slide rail I, an upper pulling unit I, an upper pulling unit II, and an upper pulling unit III; the three upper pulling units are arranged horizontally on the pulling slide rail I, and the upper pulling unit I, the upper pulling unit II, and the upper pulling unit III all include a sliding block, a sliding cavity, a driving gear, a rack, and a clamping rod. The sliding blocks of the three upper pulling units are hollow inside, and the side walls on both sides of the sliding blocks are provided with There are symmetrical through holes, the pulling slide rail I passes through the through holes of the three sliding blocks to connect the three sliding blocks, the three sliding blocks can slide left and right on the pulling slide rail, the bottoms of the three sliding blocks are fixedly connected with sliding cavities, the interior of the sliding cavity is hollow, and the interiors of the three sliding cavities are provided with driving gears, the three driving gears are driven by the driving device to drive the driving shaft, the three driving gears are meshed with racks, and under the drive of the driving gears, the racks in the three sliding cavities move up and down; the lower pulling device and the upper pulling device have the same structure, and the sliding blocks of the lower pulling unit I-III , the sliding cavity, the driving gear, the rack, and the clamping rod are arranged in the same manner as the upper pulling unit; the anti-twisting device includes an upper circular ring and a lower circular ring, which are symmetrically arranged, the upper circular ring is provided with a circular twisting slide rail I along the circumferential direction of the inner side of the circular ring, and the lower circular ring is provided with a circular twisting slide rail II along the circumferential direction of the inner side of the circular ring, and twisting sliders I are arranged at the left and right ends of the pulling slide rail I, and the twisting sliders I at both ends are respectively arranged in the circular twisting slide rail I of the upper circular ring, and twisting sliders II are arranged at the left and right ends of the pulling slide rail II, and the twisting sliders at both ends Ⅱ are respectively arranged in the circular twisted slide rail Ⅱ of the lower circular ring; the anti-pressure device includes an anti-pressure device I and an anti-pressure device II, and the anti-pressure device I and the anti-pressure device II are both arranged between the upper and lower pulling devices, the anti-pressure device I is arranged at one side of the middle gap of the upper and lower pulling units facing one side of the hardware; the anti-pressure device II is arranged at the other side of the middle gap of the upper and lower pulling units facing the other side of the hardware; the anti-shear device includes a rotating shaft, a swing ring, a swing block, and a shear impact head; two anti-shear devices are arranged on both sides of the middle gap between the anti-pressure device I and the anti-pressure device II.

2. The precision hardware strength detection device according to claim 1 is characterized in that: The bottoms of the three racks are connected with connecting blocks, and the bottoms of the connecting blocks are provided with upper and lower connecting rails, the upper connecting rail is provided with sliders Ⅰ and Ⅱ, and the lower connecting rail is provided with sliders Ⅲ and Ⅳ, the positions of sliders Ⅰ and Ⅲ are on the same horizontal line, the positions of sliders Ⅱ and Ⅳ are on the same horizontal line, sliders Ⅰ and Ⅲ are connected with clamping rods Ⅰ, and sliders Ⅱ and Ⅳ are connected with clamping rods Ⅱ, and clamping rods Ⅰ and Ⅱ can clamp the upper part of the hardware.

3. The precision hardware strength detection device according to claim 2 is characterized in that: The setting method of the sliding block, sliding cavity, driving gear, rack, and clamping rod is the same as that of the upper pulling unit. The upper pulling unit and the lower pulling unit correspond one to one. The clamping rods of the upper and lower pulling units clamp the upper and lower parts of the hardware respectively. When it is necessary to test the tensile strength of the hardware, the upper and lower pulling units are driven by the gears and racks inside the upper and lower pulling units to pull in opposite directions, thereby pulling the hardware in opposite directions up and down to test the tensile strength of the hardware.

4. The precision hardware strength detection device according to claim 3 is characterized in that: A detection device, a control device and a twisting drive device are also provided. The control device controls the twisting drive device to drive the twisting slider I and the twisting slider II to move counterclockwise and clockwise respectively along the circumferential direction in the pulling slide rails I and II, thereby driving the three upper pulling units and the three lower pulling units on the pulling slide rails I and II to move clockwise and counterclockwise respectively, and the twisting drive device controls the rotation speed of the upper pulling unit and the lower pulling unit respectively.

5. The precision hardware strength detection device according to claim 4 is characterized in that: While the upper and lower pulling units rotate clockwise and counterclockwise respectively, the upper and lower pulling units pull the hardware, and the deformation amount E along the circumferential direction of the hardware between the maximum elastic deformation of torsion and the plastic deformation and the deformation amount A perpendicular to the ground are detected and recorded by the detection device.

6. The precision hardware strength detection device according to claim 5, characterized in that: The pressure-resistant device I includes a pressure-resistant block I, which has a cavity inside and a pressure-resistant cylinder I arranged inside the cavity. The pressure-resistant cylinder I is connected to a telescopic rod I, one end of which is connected to a pressure rod, and the width of the pressure rod is equal to the width of the hardware. The pressure-resistant device II includes a pressure-resistant block II, which has a cavity inside and multiple pressure-resistant cylinders II arranged inside the cavity. Multiple pressure-resistant cylinders II are connected to multiple telescopic rods II, one end of each telescopic rod II is connected to an impact block, and one end of each impact block is provided with multiple impact protrusions.

7. The precision hardware strength detection device according to claim 6 is characterized in that: A through hole is provided at the center of the swing ring, and the rotating shaft is connected to the swing ring through the through hole. A swing block is fixedly connected to the lower end of the swing ring, and a shear impact head is fixedly connected to the lower end of the swing block. The shear impact heads of the two anti-shear devices perform shear impact on the hardware through the swing of the swing ring.

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